WO2015046813A1 - Battery protection circuit module package and battery pack - Google Patents

Abstract

The present invention relates to a battery protection circuit module package that is advantageous for integration and compactness. The battery protection circuit module package comprises: a lead frame including an internal connection terminal lead, an external connection terminal lead, and a lead for device mounting; a battery protection circuit constituting device that is mounted on the lead for device mounting; and an encapsulation material for sealing the battery protection circuit constituting device while exposing a portion of the lead frame. The present invention provides the battery protection circuit module package in which the internal connection terminal lead includes first and second internal connection terminal leads that may be exposed to the outside of the encapsulation material and electrically connected to a pair of electrode tabs of a battery cell through bonding, and one of the first and second internal connection terminal leads may be folded such that one of the pair of electrode tabs is interposed between the folded lead.

Description

Battery Protection Circuit Module Package and Battery Pack

The present invention relates to a package and a battery pack of a battery protection circuit module, and more particularly, to a package and a battery pack of a battery protection circuit module that can be miniaturized.

In general, batteries are used in portable terminals such as mobile phones and PDAs. Lithium-ion batteries are the most widely used batteries in portable terminals and the like. They generate heat during overcharging and overcurrent, and if the heating continues and the temperature rises, performance deterioration and risk of explosion occur. Therefore, a typical battery may include a protection circuit device that detects overcharge, overdischarge, and overcurrent and blocks battery operation. Such a conventional protection circuit device is generally formed by soldering a protection IC, a field effect transistor, a resistor, a capacitor, and the like to a printed circuit board (PCB). However, the conventional protection circuit device has a problem in that the space occupied by the printed circuit board is so large that there is a limit to miniaturization. In addition, after the protection circuit device is mounted in the battery core pack, a process of electrically connecting the external connection terminal or the internal connection terminal through separate wiring, wire bonding, or exposed terminals of the printed circuit board is complicated and easy. There was a problem.

The present invention has been made to solve various problems including the above problems, and an object thereof is to provide a battery protection circuit module package and a battery pack, which are advantageous for integration and miniaturization. However, these problems are exemplary, and the scope of the present invention is not limited thereby.

A battery protection circuit module package according to an aspect of the present invention is provided. The battery protection circuit module package includes a lead frame including an internal connection terminal lead, an external connection terminal lead, and a device mounting lead, a battery protection circuit component mounted on the device mounting lead, and a portion of the lead frame. And an encapsulant that encapsulates the battery protection circuit component while being exposed. The lead for the internal connection terminal includes a lead for the first internal connection terminal and a lead for the second internal connection terminal, which is exposed to the outside of the encapsulant and can be electrically connected to a pair of electrode tabs of the battery cell. In addition, any one of the internal connection terminal leads of the first internal connection lead and the second internal connection lead may be folded such that any one of the pair of electrode tabs is interposed therebetween.

In the battery protection circuit module package, any one of the first internal connection terminal lead and the second internal connection lead may include an inner connection terminal lead and an outer portion, and the outer portion may include one of the pair of electrode tabs. It may be folded 180 degrees with respect to the inner part such that any one is interposed therebetween.

The inner part of the battery protection circuit module package may extend to the outside of the encapsulant while being connected to the external connection terminal lead or the device mounting lead.

In the battery protection circuit module package, any one of the first internal connection terminal lead and the second internal connection lead may include an inner connection terminal lead, and an inner portion of the pair of electrode tabs. It may be folded 180 degrees with respect to the outer portion so that any one is interposed therebetween.

The outer portion of the battery protection circuit module package may extend to the outside of the encapsulant while being connected to the external connection terminal lead or the device mounting lead.

The inner portion of the battery protection circuit module package may be closer to the center portion of the encapsulant than the outer portion.

The first bending line between the inner side and the outer side configured to fold the inner side or the outer side in the battery protection circuit module package may be parallel to the width direction of the encapsulant.

In the battery protection circuit module package, the first internal connection lead and the second internal connection lead are further bent along a second bent line parallel to the longitudinal direction of the encapsulant so as to be erected based on the lead for the external connection terminal. Can be.

In the battery protection circuit module package, the external connection terminal lead and the device mounting lead may include a plurality of leads spaced apart from each other, and the battery protection circuit component may include a protection IC, a field effect transistor, and at least one passive element. And the passive element is arranged to connect at least some of the spaced leads to each other, and electrically connects any two selected from the group consisting of the protection IC, the field effect transistor, and the plurality of leads. By further comprising an electrical connection member, a battery protection circuit can be configured without using a separate printed circuit board.

In the battery protection circuit module package, the electrical connection member may include a bonding wire or a bonding ribbon.

In the battery protection circuit module package, the protection IC and the field effect transistor are not inserted into and fixed in the form of a semiconductor package on the lead frame, and are separately mounted on at least a part of the surface of the lead frame by surface mounting technology. It may be mounted and fixed in the form of a chip die that is not sealed with an encapsulant.

According to another aspect of the present invention, a battery protection circuit module package is provided. The battery protection circuit module package may include: a lead frame including an internal connection terminal lead, an external connection terminal lead, and a device mounting lead; A battery protection circuit component mounted on the device mounting lead; And an encapsulant sealing the battery protection circuit component while exposing a portion of the lead frame. The lead for the internal connection terminal includes a lead for the first internal connection terminal and a lead for the second internal connection terminal, which is exposed to the outside of the encapsulant and can be electrically connected to a pair of electrode tabs of the battery cell. In addition, any one of the internal connection terminal lead of the first internal connection terminal lead and the second internal connection terminal lead extends to the outside of the encapsulant while being connected to the external connection terminal lead or the element mounting lead. An inner part and an outer part, wherein the lead frame is disposed between the inner part and the outer part and the outer connecting terminal lead or the element mounting lead to connect the inner and outer parts to the lead for the external connection terminal or the element mounting lead. And a trim that can be disposed and optionally removed.

The battery protection circuit module package includes a first pair of bending holes and a second pair of bending holes spaced apart from each other between the inner side and the outer side and parallel to the width direction of the encapsulant. The inner side or the outer side may be folded along a bending line connecting the bending line connecting the bending holes or the second pair of bending holes.

According to another aspect of the present invention, a battery pack is provided. The battery pack may include a lead frame including an internal connection terminal lead, an external connection terminal lead and a device mounting lead, a battery protection circuit component mounted on the device mounting lead, and a portion of the lead frame. A battery protection circuit module package including an encapsulant sealing the battery protection circuit component; And a battery cell including a pair of protruding electrode tabs; The lead for the internal connection terminal is exposed to the outside of the encapsulant and can be electrically connected to the pair of electrode tabs, the lead for the first internal connection terminal and the lead for the second internal connection terminal. Includes, the one of the internal connection terminal lead of the lead for the first internal connection terminal and the second internal connection terminal lead, the one of the pair of the electrode tab is folded while being interposed between the pair of It is joined to any one of the electrode tabs and electrically connected thereto.

In the battery pack, any one of the first internal connection lead and the second internal connection lead may include an inner connection lead and an outer portion, and the outer portion may be any one of the pair of electrode tabs. It may be folded 180 degrees with respect to the inner portion so as to be interposed therebetween. The inner part may extend to the outside of the encapsulant while being connected to the lead for the external connection terminal or the lead for the device mounting.

In the battery pack, any one of the internal connection terminal lead of the first internal connection lead and the second internal connection lead may include an inner side and an outer side, and the inner side may be any one of the pair of electrode tabs. It may be folded 180 degrees with respect to the outer portion so as to be interposed therebetween. The outer portion may extend to the outside of the encapsulant while being connected to the external connection terminal lead or the element mounting lead.

In the battery pack, a first bending line between the inner side and the outer side configured to fold the inner side or the outer side may be parallel to the width direction of the encapsulant.

In the battery pack, the other internal connection lead of the first internal connection lead and the second internal connection lead may be joined and electrically connected to the other of the pair of electrode tabs.

In the battery pack, the first internal connection terminal lead and the second internal connection terminal lead is further bent along a second bent line parallel to the longitudinal direction of the encapsulant so as to stand on the basis of the external connection terminal lead, By bending a portion of the pair of electrode tabs to be erected with respect to the direction protruding from the battery cell, the lead for the external connection terminal is exposed above the battery cell, and the battery protection circuit module package is connected to the pair. The electrode tab may be disposed on the protruding portion of the battery cell.

The battery pack may further include a connector wire having one end electrically connected to the lead for the external connection terminal.

In the battery pack, the lead for the external connection terminal and the element mounting lead include a plurality of leads spaced apart from each other, and the battery protection circuit component includes a protection IC, a field effect transistor, and at least one passive element. The passive element is arranged to connect at least some of the plurality of spaced leads to each other, and electrically connects any two selected from the group consisting of the protection IC, the field effect transistor, and the plurality of leads. By further providing a connection member, the battery protection circuit can be configured without using a separate printed circuit board. The electrical connection member may include a bonding wire or a bonding ribbon.

In the battery pack, the protection IC and the field effect transistor are not inserted into and fixed in the form of a semiconductor package on the lead frame, but are separately encapsulated on at least a portion of the surface of the lead frame by surface mounting technology. In the form of a chip die that is not sealed with ash, it can be mounted and fixed.

According to some embodiments of the present invention made as described above, it is possible to provide a battery protection circuit module package and a battery pack, which is advantageous for integration and miniaturization. Of course, the scope of the present invention is not limited by these effects.

1 is a circuit diagram of a battery protection circuit to be implemented by the battery protection circuit module package according to an embodiment of the present invention.

2 is a diagram illustrating an arrangement structure of a stacked chip constituting a part of a battery protection circuit module package according to a modified embodiment of the present invention.

3 is a circuit diagram of another battery protection circuit to be implemented by the battery protection circuit module package according to another modified embodiment of the present invention.

4 is a plan view illustrating a part of a battery protection circuit module package according to an embodiment of the present invention.

5 is a perspective view illustrating a part of a battery protection circuit module package according to an embodiment of the present invention.

6 and 7 are a plan view and a perspective view respectively illustrating a battery protection circuit module package according to some embodiments of the present invention.

8 and 9 illustrate a battery protection circuit module package having a battery cell having a pair of electrode tabs protruding therefrom and a lead for an internal connection terminal that may be folded on an inner side based on an inner side in a battery pack according to another exemplary embodiment of the present invention. These are plan views illustrating the configuration before is combined.

FIG. 10 is a perspective view illustrating a configuration in which the outer portion is bent at an angle of 90 degrees in the inward direction with respect to the inner portion of the lead for the internal connection terminal in the battery protection circuit module package according to the embodiment of the present invention.

11 is a perspective view illustrating a configuration in which the outer side is bent at an angle of 180 degrees in the inward direction with respect to the inner side of the lead for the internal connection terminal in the battery protection circuit module package according to the exemplary embodiment of the present invention.

12 is a configuration in which the lead for the inner connection terminal is additionally bent at an angle of 90 degrees upward from the state in which the outer portion is folded based on the inner portion of the lead for the inner connection terminal in the battery protection circuit module package according to the embodiment of the present invention. It is a perspective view to illustrate.

13 is a battery protection circuit module package having a battery cell protruding a pair of electrode tabs in the battery pack according to another embodiment of the present invention and a lead for the internal connection terminal can be folded on the inner side relative to the outer portion It is a top view which illustrates the former structure.

FIG. 14 is a perspective view illustrating a configuration in which an inner portion is bent at an angle of 90 degrees in an outer direction based on an outer portion of a lead for an internal connection terminal in a battery protection circuit module package according to an embodiment of the present disclosure.

15 is a perspective view illustrating a configuration in which an inner portion is bent at an angle of 180 degrees in an outward direction based on an outer portion of a lead for an internal connection terminal in a battery protection circuit module package according to an embodiment of the present invention.

FIG. 16 illustrates a configuration in which the inner connection terminal leads are additionally bent upward at an angle of 90 degrees from a state in which the inner side is folded based on the outer side of the inner connection terminal lead in the battery protection circuit module package according to the embodiment of the present invention. It is a perspective view to illustrate.

17 is a perspective view illustrating a battery protection circuit module package assembly according to another embodiment of the present invention.

18 is a perspective view illustrating a structure of an intermediate process for implementing a battery pack according to another embodiment of the present invention.

19 is a perspective view illustrating a battery pack according to another embodiment of the present invention.

Hereinafter, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Some embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, and the following examples may be modified in many different forms, and the scope of the present invention It is not limited to the following example. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In addition, the thickness or size of each layer in the drawings is exaggerated for convenience and clarity of description.

Throughout the specification, when referring to one component, such as a film, region or substrate, being positioned on, "connected", "stacked" or "coupled" to another component, said one configuration It may be interpreted that an element may be directly bonded onto, “connected”, “stacked” or “coupled” to another component, or there may be other components interposed therebetween. On the other hand, when one component is said to be located on another component "directly on", "directly connected", or "directly coupled", it is interpreted that there are no other components intervening therebetween. do. Like numbers refer to like elements. As used herein, the term "and / or" includes any and all combinations of one or more of the listed items.

Although the terms first, second, etc. are used herein to describe various members, parts, regions, layers, and / or parts, these members, parts, regions, layers, and / or parts are defined by these terms. It is obvious that not. These terms are only used to distinguish one member, part, region, layer or portion from another region, layer or portion. Thus, the first member, part, region, layer or portion, which will be discussed below, may refer to the second member, component, region, layer or portion without departing from the teachings of the present invention.

Also, relative terms such as "top" or "above" and "bottom" or "bottom" may be used herein to describe the relationship of certain elements to other elements as illustrated in the figures. It may be understood that relative terms are intended to include other directions of the device in addition to the direction depicted in the figures. For example, if the device is turned over in the figures, elements depicted as present on the face of the top of the other elements are oriented on the face of the bottom of the other elements. Thus, the exemplary term "top" may include both "bottom" and "top" directions depending on the particular direction of the figure. If the device faces in the other direction (rotated 90 degrees relative to the other direction), the relative descriptions used herein can be interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. Also, as used herein, "comprise" and / or "comprising" specifies the presence of the mentioned shapes, numbers, steps, actions, members, elements and / or groups of these. It is not intended to exclude the presence or the addition of one or more other shapes, numbers, acts, members, elements and / or groups.

Some embodiments of the invention will now be described with reference to the drawings, which schematically illustrate ideal embodiments of the invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, embodiments of the inventive concept should not be construed as limited to the specific shapes of the regions shown herein, but should include, for example, changes in shape resulting from manufacturing.

In some embodiments of the present invention, the lead frame is a pattern in which lead terminals are patterned on a metal frame, and may be distinguished from a printed circuit board having a metal wiring layer formed on an insulating core in structure or thickness thereof.

1 is a circuit diagram of a battery protection circuit to be implemented by the battery protection circuit module package according to an embodiment of the present invention.

As shown in FIG. 1, the battery protection circuit 10 applied to the battery protection circuit module package according to an embodiment of the present invention includes first and second internal connection terminals B + and B for connection to a battery bare cell. -), The first to second external connection terminals (P +, P-), which may be connected to the charger when charging, and may be connected to the electronic device (eg, portable terminal, etc.) operated by the battery power during the discharge do. The first external connection terminal P + and the second external connection terminal P- may be understood to be for power supply.

The battery protection circuit 10 includes a connection structure of the dual FET chip 110, the protection integrated circuit 120, the resistors R1 and R2, the varistor V1, and the capacitors C1, C2, and C3. Have The dual FET chip 110 includes a first field effect transistor FET1 and a second field effect transistor FET2 having a drain common structure. The protection integrated circuit 120 is connected to the first internal connection terminal B-, which is a negative terminal of the battery, through a resistor R1, and a charging voltage or a discharge voltage is applied through the first node n1. Terminal (Vdd terminal) for sensing the applied voltage and battery voltage, reference terminal (Vss terminal) as a reference for the operating voltage inside the protection integrated circuit 110, and a detection terminal (V) for sensing the charge / discharge and overcurrent conditions Terminal), the discharge interruption signal output terminal (Dout terminal) for turning off the first field effect transistor (FET1) in the overdischarge state, and the charge interruption signal output terminal for turning off the second field effect transistor (FET2) in the overcharge state. (Cout terminal).

In this case, the inside of the protection integrated circuit 120 includes a reference voltage setting unit, a comparison unit for comparing the reference voltage and the charge / discharge voltage, an overcurrent detector, and a charge / discharge detector. The criterion for determining the state of charge and discharge may be changed to a specification required by the user, and the charge / discharge state is determined by recognizing the voltage difference of each terminal of the protection integrated circuit 120 according to the determined criterion.

When the protection integrated circuit 120 reaches an overdischarge state during discharge, the Dout terminal goes low to turn off the first field effect transistor FET1, and when the overcharge state reaches the overcharge state, the Cout terminal goes low. The second field effect transistor FET2 is turned off, and when the overcurrent flows, the second field effect transistor FET2 is turned off during charging and the first field effect transistor FET1 is turned off when discharging.

The resistor R1 and the capacitor C1 serve to stabilize fluctuations in the power supply of the protection integrated circuit 120. The resistor R1 is connected between the first node n1, which is the power supply V1 of the battery, and the Vdd terminal of the protection integrated circuit 120, and the capacitor C1 is connected between the Vdd terminal and the Vss terminal of the protection integrated circuit. Is connected to. The first node n1 is connected to the first internal connection terminal B− and the first external connection terminal P +. When the resistor R1 is made larger, the detection voltage is increased by the current penetrating into the protection integrated circuit 120 when the voltage is detected. Therefore, the value of the resistor R1 is set to an appropriate value of 1 K? Or less. In addition, the value of the capacitor (C1) has a suitable value of 0.01μF or more for stable operation.

In addition, the resistors R1 and R2 become current limiting resistors when the high voltage charger or the charger exceeding the absolute maximum rating of the protection integrated circuit 120 is connected upside down. The resistor R2 is connected between the V-terminal of the protection integrated circuit 120 and the second node n2 to which the source terminal S2 of the second field effect transistor FET2 is connected. Since the resistors R1 and R2 may cause power consumption, the sum of the resistance values of the resistors R1 and R2 is usually set to be larger than 1 KΩ. If the resistor R2 is too large, no recovery may occur after the overcharge cutoff, and thus the value of the resistor R2 is set to a value of 10 K? Or less.

The capacitor C2 has a structure connected between the second node n2 and the source terminal S1 (or VSS terminal, the second internal connection terminal B +) of the first field effect transistor FET1. The capacitor C2 does not significantly affect the characteristics of the battery protection circuit product, but is added for the user's request or stability. The capacitor C2 is for the effect of stabilizing the system by improving resistance to voltage fluctuations or external noise.

The capacitor C3 and the varistor V1 are elements for electrostatic discharge (ESD) and surge protection. The capacitor C3 and the varistor V1 are connected in parallel to each other to form a first external connection terminal P + and a second external connection terminal P−. Are placed between the connections. The varistor (V1) is a device that lowers the resistance when an overvoltage occurs, and when the overvoltage occurs, the resistance is lowered to minimize circuit damage due to the overvoltage.

The present invention implements a package of a battery protection circuit module configured by packaging the battery protection circuit 10 shown in FIG. 1 including external connection terminals P + and P- and internal connection terminals B + and B-. Doing. The protection circuit according to an embodiment of the present invention described above is exemplary, and the arrangement, number, and arrangement of the field effect transistor or the passive element, and the arrangement of the (+) or (-) polarity may be appropriately modified according to the additional function of the protection circuit. Can be.

2 is a diagram illustrating an arrangement structure of a stacked chip constituting a part of a battery protection circuit module package according to a modified embodiment of the present invention.

As shown in FIG. 2, the arrangement of the dual FET chip 110 and the protection integrated circuit 120 has a structure in which the dual FET chip 110 and the protection integrated circuit 120 are stacked up and down or adjacent to each other. Has For example, the protection integrated circuit 120 may be stacked on the upper surface of the dual FET chip 110, or the dual FET chip 110 may be disposed adjacent to the left or right side of the protection integrated circuit 120. have.

The dual FET chip 110 includes a first field effect transistor having a common drain structure and a second field effect transistor, that is, two field effect transistors, and the external connection terminal includes a first gate terminal G1 of the first field effect transistor. ) And a first source terminal S1, a second gate terminal G2, and a second source terminal S2 of the second field effect transistor on the upper surface of the dual FET chip 110. In addition, the common drain terminal D may have a structure provided on the lower surface of the dual FET chip 110.

The protection integrated circuit 120 has a structure in which the protection integrated circuit 120 is stacked on the upper surface of the dual FET chip 110. The protection integrated circuit 120 is stacked in a region (for example, a central portion) except for a portion where external connection terminals on the dual FET chip 110 are disposed. In this case, an insulating film for insulation may be disposed between the protection integrated circuit 120 and the dual FET chip 110, and the protection integrated circuit 120 and the dual FET chip 110 may be bonded with an adhesive of an insulating material. . Since the size of the dual FET chip 110 is generally larger than that of the protection integrated circuit 120, an arrangement structure in which the protection integrated circuit 120 is stacked on the dual FET chip 110 is adopted.

After the protection integrated circuit 120 is stacked on the dual FET chip 110, the Dout terminal DO of the protection integrated circuit 120 is electrically connected to the first gate terminal G1 through a wire or a wire. The Cout terminal CO of the protection integrated circuit 120 is electrically connected to the second gate terminal G2 through a wire or a wire. The protection integrated circuit 120 and the dual FET chip 110 having the stacked structure as described above will be collectively referred to as a stacked chip 100a.

In the battery protection circuit module package according to the modified embodiment of the present invention, by introducing a protection integrated circuit 120 having a stacked structure and a stacked chip 100a of a dual FET chip, an area to be mounted on a lead frame to be described later will be described. It is possible to reduce the size of the battery, thereby miniaturizing or increasing the capacity of the battery.

3 is a circuit diagram of another battery protection circuit to be implemented by the battery protection circuit module package according to another modified embodiment of the present invention. FIG. 3 is an equivalent circuit diagram of FIG. 1 as a battery protection circuit diagram when the first field effect transistor FET1, the second field effect transistor FET2, and the protection IC are integrated and provided in one chip.

As shown in FIG. 3, a circuit is constructed by implementing the flip chip 100b in which the protection IC 120 of FIG. 1 and two FETs FET1 and FET2 having a common drain structure are integrated. It is possible to implement a simpler circuit while performing the same operation as described. In addition, since the flip chip 100b is electrically connected by soldering and coupling the external terminal portion to the lead that requires electrical connection without the need for a separate wire bonding, the electrical conductivity is improved compared to the wire bonding, the production cost is reduced, and the process can be simplified. This has the advantage of reducing the volume occupied.

Additionally, in another modified embodiment of the present invention, a resistor may be provided in place of varistor V1 in the surge protection circuit configured for surge protection such as electrostatic discharge (ESD). In other words, the circuit for surge protection is composed of two resistors in parallel, one resistor and one capacitor in parallel, one resistor and one varistor in parallel, and one capacitor and one varistor. It can be configured by selecting any one of the configuration to connect the parallel.

The battery protection circuit module package may include a printed circuit board and a battery protection circuit device disposed on the printed circuit board. Alternatively, the battery protection circuit module package may include a lead frame and a battery protection circuit element disposed on the lead frame. Herein, the battery protection circuit device may include a protection integrated circuit, a field effect transistor, and at least one passive device. In embodiments of the present invention, the lead frame is a structure in which lead terminals are patterned on a metal frame, and may be distinguished from a printed circuit board having a metal wiring layer formed on an insulating core in its structure or thickness. Hereinafter, a package for disposing a battery protection circuit element on a lead frame will be described.

4 is a plan view illustrating a portion of a battery protection circuit module package according to an embodiment of the present invention, and FIG. 5 is a perspective view illustrating a portion of the battery protection circuit module package according to an embodiment of the present invention.

4 and 5, in the battery protection circuit module package according to an embodiment of the present invention, the lead frame 50 includes leads 51 and 52 for internal connection terminals and leads 58a and 58b for external connection terminals. And a lead 59 for element mounting. In another aspect, the leadframe 50 includes a plurality of leads L1 to L8 spaced apart from each other. For example, the lead 58a and 58b for the external connection terminal and the lead 59 for the device mounting include a plurality of leads L1 to L7 spaced apart from each other. At least one of the external connection terminal leads 58a and 58b may be connected to the first internal connection terminal B− and the second internal connection terminal B +. For example, the lead 58a for the external connection terminal constituting the first external connection terminal P + is the lead for the internal connection terminal constituting the first internal connection terminal B- by the first trim part 55a. It is connected with the inner part 51a of 51. In addition, the lead 58a for the external connection terminal constituting the first external connection terminal P + is the lead 51 for the internal connection terminal constituting the first internal connection terminal B- by the second trim part 55b. It is connected to the outer side 51b of (). In the lead 51 for the internal connection terminal, the inner portion 51a may be closer to the center portion of the lead frame 50 than the outer portion 51b. The size, arrangement and configuration of the plurality of leads L1 to L8 spaced apart from each other shown in the drawing are exemplary and may be appropriately modified according to the additional function of the protection circuit.

The battery protection circuit components 110, 120, and 130 may be mounted on the device mounting lead 59. The battery protection circuit elements 110, 120, and 130 may include the field effect transistor 110, the protection IC 120, and at least one passive element 130. On the other hand, a portion (eg, V1, C3) of at least one passive element 130 may be mounted on at least a portion of the leads 58a, 58b for external connection terminals.

The basic package 200a having the arrangement shown in FIG. 4 may be understood as a structure before forming the encapsulant 250, and thereafter, a battery protection circuit through a process such as molding the encapsulant 250. The module package (300 of FIG. 6) will be implemented. The encapsulant 250 may include, for example, an epoxy molding compound (EMC). The portion where the encapsulant 250 is formed may correspond to the predetermined region M shown in FIG. 4. In FIG. 5, a portion of the base package 200a that can be sealed by the encapsulant 250 is shown. The encapsulant 250 may seal the battery protection circuit components 110, 120, and 130 while exposing a portion of the lead frame 50. For example, the encapsulant 250 exposes both surfaces of the internal connection terminal leads 51 and 52 and one surface of the external connection terminal leads 58a and 58b, respectively, and the battery protection circuit components 110, 120 and 130. Can be sealed.

The protection IC chip 120 is mounted on the lead L4, and the field effect transistor chip 110 is mounted on the lead L3. The passive element 130 is disposed to connect at least some of the plurality of spaced leads L1 to L8 to each other. For example, resistor R1 is disposed on lead L1 and lead L4 so as to span between leads L1 and lead L4 spaced from each other, and varistor V1 is a lead L1 spaced from each other. ) Are disposed on the lead L1 and the lead L2 so as to span between the lead L2 and the lead L2, and the capacitor C2 is disposed between the lead L5 and the lead L6 spaced apart from each other. It may be disposed on the lead L6. Meanwhile, the electrical connection member 220 may be provided to electrically connect any two selected from the group consisting of the field effect transistor 110, the protection IC 120, and the plurality of leads L1 to L8 spaced apart from each other. have. The electrical connection member 220 may include a bonding wire or a bonding ribbon. Due to this configuration, the battery protection circuit module package according to some embodiments of the present invention may configure the battery protection circuit without using a separate printed circuit board. The printed circuit board is thicker than the lead frame, which is disadvantageous in miniaturization of the package and it is relatively easy to modify the circuit configuration. Therefore, it is important to configure the battery protection circuit without using a separate printed circuit board. Can have

In addition, the battery protection circuit module package 300 according to some embodiments of the present invention has a lead frame 50 having a plurality of mounting leads spaced apart, but an electrical connection member 220 such as a bonding wire or a bonding ribbon. ) Is configured on the leadframe 50 to configure the circuit, and thus has an important advantage that the process of designing and manufacturing the leadframe 50 for constructing the battery protection circuit can be simplified. In some embodiments of the present invention, if the electrical connection member 220 is not introduced in implementing the battery protection circuit component, the configuration of the plurality of leads constituting the lead frame 50 becomes very complicated, and thus, an appropriate lead frame ( It may not be easy to provide 50) effectively.

In the battery protection circuit module package 300 according to some embodiments of the present disclosure, a protection IC chip, a field effect transistor chip, or a stacked chip including the protection IC and the field effect transistor may be disposed on the lead frame 50. Chips sawed from a wafer not sealed with a separate encapsulant on at least a portion of the surface of the leadframe 50 by surface mounting technology rather than being inserted and fixed in the form of a semiconductor package. In the form of a die, it may be mounted and fixed. Here, the chip die is a sawing process without performing sealing on a wafer on which a plurality of array-type structures (for example, a protection IC chip and a field effect transistor chip) are formed with a separate encapsulant. Refers to individual structures implemented. That is, the protection IC chip on the lead frame 50; Field effect transistor chips; And a stacked chip including a protection IC and a field effect transistor. When mounting at least one selected from the group consisting of an IC and a field effect transistor, the chip is protected by a subsequent encapsulant 250 after mounting without sealing with a separate encapsulant. IC chip; Field effect transistor chips; Alternatively, since the stacking chip including the protection IC and the field effect transistor is sealed, the process of forming the encapsulant may be performed only once in implementing the battery protection circuit module package 300. In contrast, a protection IC chip; Field effect transistor chips; Alternatively, when a multilayer chip including a protection IC and a field effect transistor is separately inserted into a printed circuit board (PCB) to be fixed or mounted, a single molding process is required for each component and then fixed on the printed circuit board. In addition, since another molding process is required for each component mounted after mounting or mounting, the manufacturing process may be complicated and manufacturing cost may be high.

6 and 7 are a plan view and a perspective view respectively illustrating a battery protection circuit module package according to some embodiments of the present invention.

4 to 7, the battery protection circuit module package 300 according to some embodiments of the present invention may include leads 51 and 52 for internal connection terminals, leads 58a and 58b for external connection terminals, and devices. A lead frame 50 including mounting leads 59; Battery protection circuit components (110, 120, 130) mounted on the element mounting lead (59); And an encapsulant encapsulating the battery protection circuit components 110, 120, and 130 while exposing a portion of the lead frame 50.

Leads 51 and 52 for the internal connection terminals are exposed to the outside of the encapsulant 250, and may be electrically connected to a pair of electrode tabs (720 of FIG. 8) of the battery cell to be electrically connected to the first internal connection terminals. And a lead 52 for the second internal connection terminal. In the battery protection circuit module package 300 according to some embodiments of the present invention, the first internal connection terminal lead 51 extends to the outside of the encapsulant 250 while being connected to the external connection terminal lead 58a. The inner part 51a and the outer part 51b are included.

The lead frame 50 is disposed between the inner portion 51a and the outer connecting terminal lead 58a so as to connect the inner portion 51a of the lead 51 for the inner connecting terminal to the lead 58a for the outer connecting terminal. It includes a first trim portion 55a that may be removed. In addition, the lead frame 50 is disposed between the outer portion 51b and the external connection terminal lead 58a so as to connect the outer portion 51b of the internal connection terminal lead 51 to the external connection terminal lead 58a. And a second trim portion 55b, which may optionally be removed. In the modified embodiment, the first trim part 55a and the second trim part 55b are disposed between the internal connection terminal lead 51 and the element mounting lead 59 to form the internal connection terminal lead 51. May be connected to the element mounting lead 59.

The lead 51 for the internal connection terminal is disposed between the inner portion 51a and the outer portion 51b and is arranged in parallel in the width direction (parallel to the Y axis in FIG. 6) of the encapsulant 250. Can include them. For example, the lead 51 for the internal connection terminal is disposed between the inner portion 51a and the outer portion 51b and the first pair of bending holes 53a arranged to be parallel to the width direction of the encapsulant 250. The second pair of bending holes 53b is included. The outer part 51b with respect to the inner part 51a along the bend line 54a connecting the first pair of bent holes 53a or the bent line 54b connecting the second pair of bent holes 53b. May be folded inward or the inner part 51a may be folded outward with respect to the outer part 51b. The bending lines 54a and 54b connecting the pair of bending holes 53a and 53b may be parallel to the width direction of the encapsulant 250. The pair of bending holes described above are introduced to easily implement a bending line for folding the inner part and the outer part, and may have a shape of a hole, a trench, a cavity, or a slit.

The width direction (direction parallel to the Y axis in Figure 6) of the encapsulation material 250 means the short side direction of the encapsulant 250, the longitudinal direction of the encapsulant 250 (direction parallel to the X axis in Figure 6) ) Is a direction perpendicular to the width direction and may mean a long side direction of the encapsulant 250.

The battery protection circuit module package 300 according to some embodiments of the present invention illustrated in FIGS. 6 and 7 may be understood as a package reflecting a state before the trim portions 55a and 55b are selectively removed. Hereinafter, the first trim part 55a or the second trim part 55b may be selectively removed according to the separation distance or width of the pair of electrode tabs protruding from the battery cell, and the lead 51 for the first internal connection terminal may be removed. Let's take a look at the configuration that is folded.

First, a configuration in which the outer portion 51b is folded based on the inner portion 51a will be described.

8 and 9 illustrate a battery cell 700 having a pair of electrode tabs 720 protruding from the battery pack according to another exemplary embodiment of the present invention, and an outer side 51b of the battery cell 700 protruding from the inner side 51a. 4 are plan views illustrating a configuration before the battery protection circuit module package 300 having the internal connection terminal lead 51 is coupled. 10 and 11 are bent at a 180 degree angle with a configuration in which the outer side is bent at an angle of 90 degrees inward to the inner side of the lead for the internal connection terminal in the battery protection circuit package according to an embodiment of the present invention. 12 is a perspective view illustrating a configuration, and FIG. 12 is 90 degrees upward of the inner connection terminal leads from a state in which the outer side is folded with respect to the inner side of the inner connection terminal lead in the battery protection circuit package according to the embodiment of the present invention. A perspective view illustrating a configuration that is additionally bent at an angle.

8 and 9, a battery cell 700 including a pair of protruding electrode tabs 720 is provided. The battery cell 700 includes, for example, a battery cell constituting a polymer battery pack. The pair of electrode tabs 720 has an electrode tab 720a having a first polarity and an electrode tab 720b having a second polarity. Leads 51 and 52 for the internal connection terminals are electrically connected to the pair of electrode tabs 720. For example, the lead 51 for the internal connection terminal is electrically connected by being bonded to the electrode tab 720a having the first polarity while being folded with the electrode tab 720a having the first polarity interposed therebetween. The terminal lead 52 is electrically connected to the electrode tab 720b having the second polarity.

8, 10, and 11, when the separation distance between the electrode tab 720a having the first polarity and the electrode tab 720b having the second polarity is the first distance d1, the second polarity is used. When the electrode tab 720b having the first position is disposed to be bonded to the lead 52 for the internal connection terminal, the electrode tab 720a having the first polarity corresponds to the inner portion 51a of the lead 51 for the internal connection terminal. In detail, the electrode tab 720a having the first polarity is positioned at the right side of the bend line 54a. In this case, in order to fold the lead 51 for the internal connection terminal, the inner part 51a is removed after selectively trimming and removing the second trim part 55b of FIG. 6 without removing the first trim part 55a of FIG. 6. ), The outer portion 51b may be bent inwardly by an angle of 90 degrees (see FIG. 10) and finally bent by an angle of 180 degrees (see FIG. 11). In this case, the folding boundary between the inner part 51a and the outer part 51b may include a bend line 54a. Here, bending the outer portion 51b in the inward direction with respect to the inner portion 51a means that the outer portion 51b is bent in the direction in which the inner portion 51a and the outer portion 51b are folded while the inner portion 51a is fixed. In another aspect, the component in the X-axis direction of the displacement vector representing the movement of the outer portion 51b in a state where the inner portion 51a is fixed may have a positive value.

11 and 12, the first internal connection terminal lead 51 and the second internal connection terminal lead 52 are encapsulated so as to stand up relative to the external connection terminal leads 58a and 58b. It is possible to bend upward along the second bend line 57 parallel to the longitudinal direction (the X-axis direction in FIG. 11) of the ash 250. The bending of the internal connection lead 51 and 52 upward may mean that a component in the Z-axis direction of the displacement vector representing the movement of the internal connection lead 51 and 52 has a positive value. For example, the first internal connection lead 51 and the second internal connection lead 52 may be substantially perpendicular to the plane of the lead frame 50 positioned in the encapsulant 250. It can be bent along the two bend lines 57.

A bending line 57 connecting at least two trim holes 56 may be parallel to the longitudinal direction of the encapsulant 250. The above-described trim holes 56 easily trim and remove the first trim part 55a or the second trim part 55b, and further, upwardly bend the leads 51 and 52 for the internal connection terminals. In order to easily implement the second bend line 57 for. The trim hole 56 described above may be understood as a bend hole in view of easily implementing a bend line. The trim hole 56 may have a shape of a hole, a trench, a cavity, or a slit.

In the battery protection circuit module package 300 shown in FIGS. 10 to 12, the process of bending and / or folding the internal connection terminals leads 51 and 52 is omitted for convenience and omitting a pair of electrode tabs 720. Although shown in the drawing, in practice, the electrode tab 720a having the first polarity is interposed between the first internal connection terminal leads 51 to be folded, and is joined to the first internal connection terminal leads 51. The electrode tab 720b having the two polarities may be described in consideration of the state in which the electrode tab 720b is bonded to the second internal connection terminal lead 52.

Referring to FIG. 9, when the separation distance between the electrode tab 720a having the first polarity and the electrode tab 720b having the second polarity is the second distance d2, the electrode tab 720b having the second polarity is provided. In consideration of arranging () to be connected to the lead 52 for the internal connection terminal, the electrode tab 720a having the first polarity corresponds to the inner portion 51a of the lead 51 for the internal connection terminal. In detail, unlike FIG. 8, the electrode tab 720a having the first polarity is not positioned at the right side of the bend line 54a connecting the first pair of bend holes 53a. It is located on the right side of the bend line 54b connecting the bend holes 53b. In this case, in order to fold the lead 51 for the internal connection terminal, the inner part 51a is removed after selectively trimming and removing the second trim part 55b of FIG. 6 without removing the first trim part 55a of FIG. 6. ), The outer portion 51b may be bent inwardly by an angle of 90 degrees, and finally bent by an angle of 180 degrees. In this case, the folding boundary between the inner part 51a and the outer part 51b may include a bend line 54b. Subsequently, the first inner connecting terminal lead 51 and the second inner connecting terminal lead 52 are parallel to the longitudinal direction of the encapsulant 250 so as to be erected with respect to the outer connecting terminal leads 58a and 58b. It can be bent upward along the second bend line 57.

Next, the structure in which the inner part 51a is folded with respect to the outer part 51b is demonstrated.

13 is a battery protection circuit module package having a battery cell protruding a pair of electrode tabs in the battery pack according to another embodiment of the present invention and a lead for the internal connection terminal can be folded on the inner side relative to the outer portion 14 and 15 are views in which the inner portion is bent at an angle of 90 degrees to the outer side with respect to the outer portion of the lead for the internal connection terminal in the battery protection circuit module package according to the embodiment of the present invention. And FIG. 16 is a perspective view illustrating a configuration that is bent at an angle of 180 degrees, and FIG. 16 illustrates an internal connection of the inner part of the battery protection circuit module package according to an embodiment of the present invention from a state in which the inner part is folded based on the outer part of the lead for the internal connection terminal. A perspective view illustrating a configuration in which the terminal leads are additionally bent at an angle of 90 degrees upwards.

Referring to FIG. 13, a battery cell 700 including a pair of protruding electrode tabs 720 is provided. The battery cell 700 includes, for example, a battery cell constituting a polymer battery pack. The pair of electrode tabs 720 has an electrode tab 720a having a first polarity and an electrode tab 720b having a second polarity. Leads 51 and 52 for the internal connection terminals are electrically connected to the pair of electrode tabs 720. For example, the lead 51 for the internal connection terminal is electrically connected by being bonded to the electrode tab 720a having the first polarity while being folded with the electrode tab 720a having the first polarity interposed therebetween. The terminal lead 52 may be electrically connected to the electrode tab 720b having the second polarity.

13 to 15, when the separation distance between the electrode tab 720a having the first polarity and the electrode tab 720b having the second polarity is the third distance d3, the electrode having the second polarity When the tab 720b is first disposed to be joined to the lead 52 for the internal connection terminal, the electrode tab 720a having the first polarity corresponds to the outer portion 51b of the lead 51 for the internal connection terminal. As a result, the electrode tab 720a having the first polarity is positioned on the left side of the bend line 54a. In this case, in order to fold the lead 51 for the internal connection terminal, the first trim part 55a is selectively trimmed and removed without removing the second trim part 55b of FIG. 6, and then the outer part 51b is referred to. In this way, the inner portion 51a can be bent in the outward direction by an angle of 90 degrees (see FIG. 14), and finally bent by an angle of 180 degrees (see FIG. 15). In this case, the folding boundary between the inner part 51a and the outer part 51b may include a bend line 54a. Here, bending the inner portion 51a in the outward direction based on the outer portion 51b means that the inner portion 51a is bent in the direction in which the outer portion 51b and the inner portion 51a are folded while the outer portion 51b is fixed. In another aspect, it may mean that the component in the X-axis direction of the displacement vector representing the movement of the inner portion 51a in a state where the outer portion 51b is fixed has a negative value.

15 and 16, the first internal connection terminal lead 51 and the second internal connection terminal lead 52 are encapsulated so as to stand up relative to the external connection terminal leads 58a and 58b. It can be bent upward along the second bend line 57 parallel to the longitudinal direction (the X-axis direction in FIG. 15) of the ash 250. The bending of the internal connection lead 51 and 52 upward may mean that a component in the Z-axis direction of the displacement vector representing the movement of the internal connection lead 51 and 52 has a positive value. For example, the first internal connection lead 51 and the second internal connection lead 52 may be substantially perpendicular to the plane of the lead frame 50 positioned in the encapsulant 250. It can be bent along the two bend lines 57.

A bending line 57 connecting at least two trim holes 56 may be parallel to the longitudinal direction of the encapsulant 250. The above-described trim holes 56 easily trim and remove the first trim part 55a or the second trim part 55b, and further, upwardly bend the leads 51 and 52 for the internal connection terminals. In order to easily implement the second bend line 57 for the purpose, it may have a shape of a hole, a trench, a cavity, or a slit.

In the battery protection circuit module package 300 shown in FIGS. 14 to 16, the process of bending and / or folding the internal connection terminals leads 51 and 52 is omitted for convenience and omitting a pair of electrode tabs 720. Although shown in the drawing, in practice, the electrode tab 720a having the first polarity is interposed between the first internal connection terminal leads 51 to be folded, and is joined to the first internal connection terminal leads 51. The electrode tab 720b having the two polarities may be described in consideration of the state in which the electrode tab 720b is bonded to the second internal connection terminal lead 52.

Hereinafter, a battery pack implemented using the battery protection circuit module package 300 described above will be described.

17 is a perspective view illustrating a battery protection circuit module package assembly according to another embodiment of the present invention.

Referring to FIG. 17, the battery protection circuit module package assembly 600 according to another embodiment of the present invention includes the battery protection circuit module package 300 and the connector wiring 560 described above. One end of the connector wiring 560 is made of laser welding, resistance welding, soldering, conductive adhesive, and conductive tape on the external connection terminal leads 58a and 58b exposed by the battery protection circuit module package 300. And are electrically connected in at least one manner selected from the group. The connector wire 560 may be provided partially surrounded by the insulating member 540.

18 is a perspective view illustrating a structure of an intermediate process for implementing a battery pack according to another embodiment of the present invention, Figure 19 is a perspective view illustrating a battery pack according to another embodiment of the present invention.

The battery pack 800 illustrated in FIG. 18 is a structure appearing in an intermediate stage of the manufacturing process, and includes a battery cell 700 including a pair of protruding electrode tabs 720a and 720b and the battery protection circuit module package assembly described above. 600 is a combined structure. In particular, the lead 51 for the first internal connection terminal of the battery protection circuit module package 300 has an inner portion 51a and an outer portion 51b folded and has a first polarity between the inner portion 51a and the outer portion 51b. The electrode tab 720a is interposed. As described above, the options of the trimming / molding process vary according to the distance between the pair of electrode tabs 720a and 720b. For example, the battery protection circuit module package 300 shown in FIG. Or as a package shown in FIG. 15.

From the structure shown in Fig. 18, the first internal connection terminal lead 51 and the second internal connection terminal lead 52, as described with reference to Figs. 12 and 16, the external connection terminal leads 58a and 58b. Part of the first step and the pair of electrode tabs 720a and 720b which are further bent along the second bend line 56 parallel to the longitudinal direction (X-axis direction) of the encapsulant 250 so as to stand as a reference, the battery cell By performing a second step of bending along the third bend line 725 so as to be erected relative to the direction protruding from the 700, the leads 58a and 58b for the external connection terminals are exposed upward of the battery cell 700. And a battery pack in which the battery protection circuit module package 300 is placed on a portion (for example, 710 of FIG. 18) on which the pair of electrode tabs 720a and 720b protrude from the battery cell 700 ( 800 is provided. The battery protection circuit module package 300 illustrated in FIG. 19 may be understood as, for example, the package illustrated in FIG. 12 or 16. In the second step, the third bent line 725 is formed on a portion of the pair of electrode tabs 720a and 720b that is not joined to the leads 51 and 52 for the internal connection terminals and has a length of the encapsulant 250. It can be parallel to a direction (X-axis direction). The first step and the second step may be performed sequentially or in reverse order, and in some cases, may be simultaneously performed.

So far, the battery protection circuit module package and the battery pack according to some embodiments of the present invention have been described. In the battery protection circuit module package, a trim portion, a plurality of pairs of bending holes, and a bend line, which can be selectively removed corresponding to various intervals of the electrode tab protruding from the battery cell, are introduced to determine the size of the battery protection circuit module package. It can be provided in the same way without changing according to the various intervals of the tap can be expected to be beneficial to mass production. In addition, in response to various intervals of the electrode tab protruding from the battery cell, by bending the inner portion or the outer portion constituting the lead for the internal connection terminal of the battery protection circuit module package in the lateral direction and then bent upwards again to the secondary battery An advantageous effect can be expected to provide a battery pack in which the protection circuit module package is densely arranged in the battery cell.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (17)

A lead frame including an internal connection terminal lead, an external connection terminal lead, and a device mounting lead; A battery protection circuit component mounted on the device mounting lead; And And an encapsulant sealing the battery protection circuit component while exposing a part of the lead frame. The lead for the internal connection terminal includes a lead for the first internal connection terminal and a lead for the second internal connection terminal, which is exposed to the outside of the encapsulant and can be electrically connected to a pair of electrode tabs of the battery cell. and, One of the first internal connection lead and the second internal connection lead may be folded so that any one of the internal connection terminal leads is interposed therebetween, Battery protection circuit module package. The method of claim 1, Any one of the internal connection terminal lead of the first internal connection lead and the second internal connection lead which can be folded so as to be interposed between any one of the pair of electrode tabs includes an inner portion and an outer portion; , The inner side is closer to the center of the encapsulant than the outer side, The inner part is connected to the lead for the external connection terminal or the lead for the device mounting, The outer side may be folded based on the inner side such that any one of the pair of electrode tabs is interposed between the outer side and the inner side. Battery protection circuit module package. The method of claim 1, Any one of the internal connection terminal lead of the first internal connection lead and the second internal connection lead which can be folded so as to be interposed between any one of the pair of electrode tabs includes an inner portion and an outer portion; , The inner side is closer to the center of the encapsulant than the outer side, The outer part is connected to the lead for the external connection terminal or the lead for the device mounting, The inner part may be folded based on the outer part such that any one of the pair of electrode tabs is interposed between the inner part and the outer part. Battery protection circuit module package. The method according to any one of claims 2 and 3, The inner connecting terminal lead of any one of the first inner connecting terminal lead and the second inner connecting terminal lead, which can be folded so that any one of the pair of electrode tabs interposed therebetween, is in the inner portion or the outer portion. And at least one pair of bent holes arranged side by side in the width direction of the encapsulant between the inner side and the outer side so that the metal can be folded. The method of claim 1, The lead for the first internal connection terminal and the lead for the second internal connection terminal, the lead for the external connection terminal to be bent along the lead line parallel to the longitudinal direction of the encapsulant, so as to stand on the basis of the lead for the external connection terminal. And a bending hole disposed between a region of the device mounting lead and the region of the internal connection terminal lead. The method of claim 1, The lead for the external connection terminal and the lead for mounting the device includes a plurality of leads spaced apart from each other, The battery protection circuit component comprises a protection IC, a field effect transistor and at least one passive element, The passive element is arranged to connect at least a portion of the plurality of spaced leads to each other, and an electrical connection for electrically connecting any two selected from the group consisting of the protection IC, the field effect transistor, and the plurality of leads. By further providing a member, a battery protection circuit can be configured without using a separate printed circuit board. Battery protection circuit module package. The method of claim 6, The electrical connection member includes a bonding wire or a bonding ribbon, battery protection circuit module package. The method of claim 6, The protection IC and the field effect transistor are not inserted into and fixed in the form of a semiconductor package on the lead frame, and are not sealed with a separate encapsulant on at least a part of the surface of the lead frame by surface mounting technology. A battery protection circuit module package mounted and fixed in the form of a chip die. A lead frame including an internal connection terminal lead, an external connection terminal lead, and a device mounting lead; A battery protection circuit component mounted on the device mounting lead; And And an encapsulant sealing the battery protection circuit component while exposing a part of the lead frame. The lead for the internal connection terminal includes a lead for the first internal connection terminal and a lead for the second internal connection terminal, which is exposed to the outside of the encapsulant and can be electrically connected to a pair of electrode tabs of the battery cell. and, The inner connecting terminal lead of any one of the first inner connecting terminal lead and the second inner connecting terminal lead is connected to the outer connecting terminal lead or the element mounting lead and extends to the outside of the encapsulant; Including the outer part, The lead frame is disposed between the region of the inner portion and the outer portion and the region of the lead of the external connection terminal or the element mounting lead so as to connect the inner portion and the outer portion to the lead for the external connection terminal or the element mounting lead. Comprising a trim, which may optionally be removed, Battery protection circuit module package. The method of claim 9, At least one pair of bending holes spaced apart from each other between the inner side and the outer side and disposed side by side in the width direction of the encapsulant, And the inner side or the outer side may be folded along a bend line connecting the at least one pair of bending holes. A lead frame including an internal connection terminal lead, an external connection terminal lead, and a device mounting lead, a battery protection circuit component mounted on the device mounting lead, and the battery protection circuit configuration while exposing a part of the lead frame A battery protection circuit module package including an encapsulant sealing the device; And A battery cell including a pair of protruding electrode tabs; And The lead for the internal connection terminal is exposed to the outside of the encapsulant, and includes a lead for the first internal connection terminal and a lead for the second internal connection terminal that can be electrically connected to the pair of electrode tabs, Any one of the pair of electrode tabs may be folded between any one of the first internal connection lead and the second internal connection lead, and between the folded one of the internal connection terminal leads. Are bonded and electrically connected through Battery pack. The method of claim 11, Any one of the inner connecting terminal lead of the lead for the first inner connecting terminal and the lead for the second inner connecting terminal includes an inner portion and an outer portion, The inner side is closer to the center of the encapsulant than the outer side, The outer part is folded based on the inner part such that any one of the pair of electrode tabs is interposed therebetween. Battery pack. The method of claim 11, Any one of the inner connecting terminal lead of the lead for the first inner connecting terminal and the lead for the second inner connecting terminal includes an inner portion and an outer portion, The inner side is closer to the center of the encapsulant than the outer side, The inner part is folded based on the outer part such that any one of the pair of electrode tabs is interposed therebetween. Battery pack. The method according to claim 12 or 13, The bending line between the inner side and the outer side configured to fold the inner side or the outer side is parallel to the width direction of the encapsulant, Battery pack. The method of claim 11, One of the first internal connection terminal leads and the other one of the second internal connection terminal leads is connected to the other one of the pair of electrode tabs and electrically connected to each other. Battery pack. The method of claim 11, The lead for the first internal connection terminal and the lead for the second internal connection terminal are bent along a bending line parallel to the longitudinal direction of the encapsulant so as to be erected with respect to the external connection terminal lead, and a part of the pair of electrode tabs. By bending to stand relative to the direction protruding from the battery cell, The lead for the external connection terminal is exposed above the battery cell, and the battery protection circuit module package is disposed so that the pair of electrode tabs are mounted on a portion protruding from the battery cell, Battery pack. The method of claim 11, One end is further provided with a connector wire is electrically connected to the lead for the external connection terminal, Battery pack.

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