CN205211805U - Battery packs and battery holders and chargers for power tools - Google Patents

Abstract

The utility model discloses a group battery and battery holder and charger for electric tool, a group battery for electric tool has: a battery pack case; a battery disposed within the battery pack housing; and a battery pack connection terminal configured to electrically communicate a power assembly of the power tool with a battery within the battery pack housing; the battery pack shell is provided with a battery pack handle and a battery pack fixing structure; wherein the battery pack is configured to be detachably secured to a battery holder on the power tool; when the battery pack is placed on the battery rack, the battery pack fixing structure is configured to be matched with the battery pack fixing part on the battery rack so as to fix the battery pack on the battery rack, and the battery is electrically communicated with the power assembly through the battery pack connecting terminal. The battery pack and the battery holder are simple and effective in fixing structure, so that the battery pack is easy to assemble and disassemble, and the electric tool is greatly convenient for a user to use and the operation efficiency is improved.

Description

Battery packs and battery holders and chargers for power tools

technical field

The utility model relates to a battery pack, a battery rack and a charger for an electric tool, in particular to a battery rack with an open structure used in an electric tool or a charger and a battery rack suitable for the battery rack Battery.

Background technique

In some cases, such as when a user needs to operate a wirelessly powered power tool, it is common to install a battery pack into a battery compartment provided by the power tool. The battery compartment is generally of a fixed size so that it can accommodate a battery pack of a specific matching size. Some electric tools may need to be driven by a large amount of energy, so the size and weight of the battery pack will increase accordingly, and the battery compartment provided by the electric tool must also be increased accordingly to accommodate the larger battery pack, resulting in a larger battery pack for the electric tool. The overall volume becomes larger. In addition, the heavy battery pack takes more effort to carry and install, which is easy to cause physical strain, and also makes it inefficient to operate these wireless power tools.

Utility model content

Therefore, the embodiments of the present invention provide a new battery pack, battery holder, and charger for electric tools to overcome the above-mentioned technical problems.

In one aspect, the utility model provides a battery pack for an electric tool, comprising: a battery pack housing; a battery disposed in the battery pack housing; and a battery pack connection terminal configured as an electrical The power assembly of the electric tool is connected with the battery in the battery pack housing; it is characterized in that: the battery pack housing is provided with a battery pack handle and a battery pack fixing structure; wherein the battery pack is configured The battery holder is detachably fixed on the electric tool; when the battery pack is placed on the battery holder, the battery pack fixing structure is configured to cooperate with the battery pack fixing member on the battery holder The battery pack is fixed on the battery rack, and the battery is electrically communicated with the power assembly through the battery pack connection terminal.

Preferably, the battery pack also has a battery control board configured to control the operation of the battery pack.

Preferably, the battery pack connection terminal is provided on the battery control board.

Preferably, the battery pack fixing member includes a protrusion structure, and the battery pack fixing structure includes a slide groove structure configured to cooperate with the protrusion structure on the battery rack.

Preferably, the battery pack fixing member includes a locking tongue, and the battery pack fixing structure includes a locking groove configured to cooperate with the locking tongue of the battery holder.

Preferably, the battery pack casing has a substantially rectangular prism shape.

In another aspect, the utility model provides a battery holder for an electric tool, which is configured to detachably fix a battery pack on the electric tool, comprising: a battery holder housing; a battery pack fixing member, which It is arranged on the battery rack housing; and a connection terminal is configured to electrically connect the power component of the electric tool with the battery pack; it is characterized in that: the battery pack is provided with a battery pack fixing structure; Wherein, when the battery pack is placed on the battery rack, the battery pack fixing member is configured to cooperate with the battery pack fixing structure to fix the battery pack on the battery rack, and the battery The group is in electrical communication with the power assembly through the connecting terminal.

Preferably, the battery pack fixing member includes a protrusion structure, and the battery pack fixing structure includes a slide groove structure configured to cooperate with the protrusion structure on the battery rack.

Preferably, the battery pack fixing member includes a locking tongue, and the battery pack fixing structure includes a locking groove configured to cooperate with the locking tongue of the battery holder.

Preferably, the battery pack fixing member further includes an actuating member configured to release the locking caused by the cooperation of the locking tongue and the locking groove.

Preferably, the battery pack fixing member further includes an elastic member configured to return the locking tongue and/or the actuating member when the actuating member is released.

Preferably, the battery rack has an at least partially open structure, and when the battery pack is fixed on the battery rack, at least part of the battery pack is not surrounded by the battery rack shell.

In another aspect, the utility model provides a charger, which is configured to charge a battery pack for an electric tool, comprising: a charger housing; a battery pack fixing member, which is arranged on the charger on the casing; and connecting terminals, which are configured to electrically communicate with the charging circuit of the charger and the battery pack; it is characterized in that: the battery pack is provided with a battery pack fixing structure; wherein, when the battery pack When placed on the charger, the battery pack fixing member is configured to cooperate with the battery pack fixing structure to fix the battery pack on the charger, and the battery pack and the charging circuit pass through The connecting terminals are electrically connected.

Preferably, the charger has a battery rack provided in the utility model; wherein, the battery rack has: a battery rack housing, and the battery rack housing constitutes at least a part of the charger housing; The battery pack fixing member, which is provided on the battery rack case; and the connection terminal, wherein when the battery pack is placed on the battery rack, the battery pack fixing member is configured In order to cooperate with the battery pack fixing structure to fix the battery pack on the battery rack, and the battery pack is electrically connected with the charging circuit of the charger through the connecting terminal.

Preferably, the battery pack fixing member includes a protrusion structure, and the battery pack fixing structure includes a slide groove structure configured to cooperate with the protrusion structure on the battery rack.

Preferably, the battery pack fixing member includes a locking tongue, and the battery pack fixing structure includes a locking groove configured to cooperate with the locking tongue of the battery holder.

Preferably, the battery pack fixing member further includes an actuating member configured to release the locking caused by the cooperation of the locking tongue and the locking groove.

Preferably, the battery pack fixing member further includes an elastic member configured to return the locking tongue and/or the actuating member when the actuating member is released.

Preferably, the battery rack has an at least partially open structure, and when the battery pack is fixed on the battery rack, at least part of the battery pack is not surrounded by the battery rack shell.

The battery pack and battery holder for power tools of the present invention therefore provide many advantages. One of the advantages is that the battery holder with an open structure can receive and fix battery packs of different shapes/sizes, so that users can connect battery packs of different sizes to operate the electric tool according to different needs. The battery pack mounts on the battery racks have a simple and effective assembly/structure, can securely fasten the battery packs, and allow users to use these mounts to easily install the battery packs on the battery racks, or by setting A button/actuator on the battery holder unlocks for quick removal of the battery pack. At the same time, the battery rack can be installed on different electric tools, so the battery pack and battery rack for electric tools in the utility model are suitable for any type of electric tools. In addition, the battery pack is equipped with a handle, so users can use the handle to hold the battery pack with a certain weight, avoiding physical strain caused by assembling, disassembling or transporting the battery pack, which greatly facilitates the use of electric tools for users and improves operating efficiency.

Description of drawings

The performance and advantages of the present utility model can be further understood with reference to the remainder of this specification and the accompanying drawings; the same components have the same reference numerals in these drawings. In some cases, a subtag is placed after a label and a hyphen to denote one of many similar components. When a label is mentioned without specific mention of an existing sublabel, all such similar components are meant.

1 shows a perspective view of a battery pack and a battery holder for an electric tool according to an embodiment of the present invention;

Figure 2 shows a perspective view of the battery pack shown in Figure 1;

Figure 3 shows a perspective view of another angle of the battery pack shown in Figure 2;

Figure 4 shows a perspective view of the bottom of the battery pack shown in Figure 2;

Figure 5 shows an exploded perspective view of the battery pack shown in Figure 2;

Figure 6 shows a perspective view of the internal components of the battery pack shown in Figure 2;

Figure 7 shows a perspective view from another angle of the internal components of the battery pack shown in Figure 6;

Figure 8 shows a side view of the internal components of the battery pack shown in Figure 6;

Figure 9 shows a side view from another angle of the internal components of the battery pack shown in Figure 6;

Figure 10 shows a perspective view of the battery holder shown in Figure 1;

Figure 11 shows a perspective view of another angle of the battery holder shown in Figure 10;

Figure 12 shows a front view of the battery holder shown in Figure 10;

Figure 13 shows a cross-sectional perspective view of the battery holder shown in Figure 10;

Figure 14 shows a cross-sectional side view of the battery holder shown in Figure 13;

Figure 15 shows a cross-sectional perspective view of the battery holder shown in Figure 10 in another operating state;

Figure 16 shows a cross-sectional side view of the battery holder shown in Figure 15;

Figure 17 shows a perspective view of a charger according to an embodiment of the present invention;

Figure 18 shows a perspective view of another angle of the charger shown in Figure 17;

Figure 19 shows a front view of the charger shown in Figure 17; and

FIG. 20 shows a perspective view of the inner structure of the charger shown in FIG. 17 .

detailed description

Embodiments of the present invention use battery packs and battery holders for power tools. Other different benefits and advantages provided by various embodiments of the present invention can be easily understood from the following description.

Referring to Fig. 1 to Fig. 9, the utility model provides a battery pack 100 for an electric tool, which has: a battery pack case 102; a battery 104, which is arranged in the battery pack case 102; and a battery pack A connecting terminal 106, which is configured to electrically connect the power assembly of the electric tool with the battery 104 in the battery pack housing 102; it is characterized in that: the battery pack housing 102 is provided with a battery pack handle 108, And the battery pack fixing structure 110; wherein, the battery pack 100 is configured as a battery rack 112 detachably fixed on the electric tool; when the battery pack 100 is placed on the battery rack 112, the The battery pack fixing structure 110 is configured to cooperate with the battery pack fixing member 114 on the battery rack 112 to fix the battery pack 100 on the battery rack 112, and the battery 104 and the power assembly pass through the The battery pack connection terminals 106 are in electrical communication.

As shown in FIGS. 1 to 5 , the battery pack 100 is mainly composed of a battery pack casing 102 and a battery 104 disposed in the battery pack casing 102 . The battery pack case 102 can be substantially composed of the front case 102A and the rear case 102B, and fastened by screws 102C, or by other known methods such as snap fit, adhesive, bolts and the like. Preferably, the front case 102A and the rear case 102B can be made of plastic or any rigid material, so the assembled battery case 102 has a certain strength to fix and protect the battery 104 disposed in the battery case 102 . Preferably, the battery pack casing 102 has a substantially rectangular cylindrical shape, suitable for accommodating the battery 104 which is also substantially rectangular cylindrical and an assembly 120 composed of other components such as the battery control board 116 and wires 118 . Alternatively, the battery case 102 may have other shapes of different shapes to accommodate assemblies 120 of different shapes formed in other combinations/arrangements. Alternatively, the battery pack case 102 can be composed of other different combinations/numbers of cases to form a battery pack case 102 that substantially completely encloses the battery 104 and other internal parts assembly 120 as in the above example.

Preferably, the battery pack housing 102 is provided with a battery pack handle 108 . As shown in FIG. 5, the handle 108 can be attached to the surface above the battery pack case 102 in an additional manner, or any one surface, and fastened to the battery pack case 102 with screws 108C (or in other ways as described above). . The battery pack handle 108 is made of the same plastic or the same rigid material as the battery pack case 102 , or can be made of other different materials. Alternatively, the battery pack handle 108 may be integrally formed on the battery pack housing 102 . Optionally, the surface of the battery pack handle 108 may be coated with a non-slip material (such as glue), or have a non-slip textured surface. Advantageously, the battery pack 100 can be held by the user using the battery pack handle 108, thereby eliminating the need to hold/carry/disassemble the battery pack 100 of a certain weight in a position that may not be ergonomic, reducing the risk to the user due to improper posture. Damage to the battery pack 100 or the electric tool may be caused by injury or accidental operation.

Preferably, the battery pack casing 102 has a battery pack fixing structure 110 . As shown in FIG. 1 , the battery pack 100 may be configured to be detachably fixed on a battery holder 112 , such as the battery holder 112 provided on an electric tool. For example, when the battery pack 100 is placed on the battery rack 112 , the battery pack fixing structure 110 cooperates with the battery pack fixing member 114 on the battery rack 112 of the power tool to fix the battery pack 100 on the battery rack 112 . Referring to FIGS. 2 to 3 , the battery pack fixing structure 110 on the battery pack case 102 may include a slot structure 124 configured to cooperate with the protruding structure 122 on the battery rack 112 , and/or configured to cooperate with the battery rack Lock tongue 126 of 112 fits into lock slot 128 . The specific operations of these fixing structures 110 and fixing members 114 will be explained in more detail in other examples.

Preferably, the battery pack 100 also has a battery pack connection terminal 106 and a battery control board 116 for controlling the operation of the battery pack 100 . As shown in FIGS. 4 and 5 , the battery pack connection terminal 106 is provided on the battery control board 116 accommodated in the battery pack case 102 , and is configured to pass through an opening 130 located substantially near the bottom of the battery pack case 102 . Another set of connection terminals 132 is connected, such as connection terminals connected to a power component of an electric tool. The battery pack connection terminal 106 has at least one metal assembly with a clip structure, for example, four sets of metal clips 106 shown in the figure, which are respectively used to connect the corresponding four connection metal pieces on the electric tool such as power supply (+), power supply (-) , INFO (+), INFO (-), or other possible pin assignments. Advantageously, this design can reduce the wiring between the battery pack connection terminal 106 and the battery control board 116 or the battery 104 , thereby simplifying the production process of the battery pack 100 . Due to different circuit design/application requirements, the battery pack 100 may not have a battery control board 116, and the battery 104 can be directly connected to the battery pack connection terminal 106, and through the battery pack connection terminal 106 and the power assembly of the electric tool (or electric power tool). other control boards in the tool) are electrically connected. Alternatively, the battery pack connection terminals 106 may be located at other locations such as on the battery pack housing 102 and be connected to the battery control board 116 and/or the battery 104 housed in the battery pack housing 102 through additional electrical connection means.

The battery control board 116 is operable to control the operation of the battery pack 100, such as controlling operating parameters such as operating voltage, current, power, etc. during discharging/charging, or performing appropriate adjustment/transformation (boosting/decreasing/stabilizing voltage) /steady current) to best suit the operation of the power tool and/or the charging or discharging operation of the battery 104. In addition, the battery control board 116 is operable to monitor the conditions of the battery pack 100 during operation, such as various parameters such as the temperature of the battery/battery pack 100 , operating voltage, current, power, remaining capacity, and the like. As shown in FIGS. 2 to 5, the battery control board has at least one indicator light 116L operable to display/represent the operating conditions of the battery pack 100, such as charging or discharging operating conditions, remaining power, etc., and the indicator lights 116L 116L can be identified by the user through the opening or light-transmitting portion 102L on the battery pack housing 102 . In addition, a button 116P is provided on one side of the indicator light 116L, and the user can press the button 116P through the actuating part 102P on the battery pack case 102 to operate the battery pack 100 . As an example, the four indicator lights 116L shown can represent the remaining power of the battery pack 100. When the user presses the button 116P, the indicator light 116L (such as half of the power with two indicator lights) represents the remaining power, so the user can according to the Charge or discharge the remaining power.

As shown in FIGS. 5-9 , the battery pack 100 may have a plurality of batteries 104 . The cells 104 have a generally cylindrical shape and are arranged in a specific array, such as a 4×8 array in these embodiments, electrically connected in a specific series and/or parallel connection. The electrical connection between the plurality of batteries 104 can be connected by 2×2 (134A), 1×4 (134B) or 1×2 (134C) connection elements 134 as shown in the figure and connected to the battery control board 116 . As an example, 32 batteries with an operating voltage of 3.6 volts can be connected in 2 parallel to 16 batteries 104 with an operating voltage of about 58 volts, and the power can be output to the connected electric tool after proper adjustment/transformation by the battery control board 116 And push the power components. Preferably, the array of batteries 104 is supported by the fixing frame 136 , and other components such as the connecting element 134 and the battery control board 116 can be installed on the fixing frame 136 to form the battery assembly 120 . In addition, the battery assembly 120 can also be provided with other connecting elements such as flexible wires 118 for connecting different batteries 104 and/or the battery control board 116 . Alternatively, the battery pack 100 may have a different number of cells 104, or cells 104 of a different shape (such as a flat plate), such as one or more lithium polymer cells, lithium ion cells, nickel metal hydride cells, nickel cadmium cells, etc. Rechargeable batteries, or disposable batteries, etc., are connected in the same or different series and/or parallel ways to form battery assemblies 120 with different shapes, operating voltages, currents, powers, capacities, etc.

Referring to Fig. 1 and Fig. 10 to Fig. 16, the utility model provides a battery holder 112 for an electric tool, which is configured to detachably fix a battery pack 100 on the electric tool, and has: a battery holder housing 138; a battery pack fixing member 114, which is arranged on the battery frame housing 138; and a connection terminal 132, which is configured to electrically connect the power assembly of the electric tool with the battery pack 100; it is characterized in that: The battery pack 100 is provided with a battery pack fixing structure 110; wherein, when the battery pack 100 is placed on the battery rack 112, the battery pack fixing member 114 is configured to cooperate with the battery pack fixing structure 110 to fix the battery pack 100 on the battery rack 112 , and the battery pack 100 is in electrical communication with the power assembly through the connection terminal 132 .

As shown in FIGS. 10-12 , the battery rack 112 has a battery rack housing 138 and is composed of a main portion 138A, a bottom portion 138B, and side portions 138C. The material for manufacturing the battery frame housing 138 is preferably plastic or other rigid materials. Preferably, the inner surface of the battery holder housing 138 is provided with a battery pack fixing member 114, including a protruding structure 122 disposed on a side portion 138C, which is configured to match the battery pack 100 as shown in FIGS. 1 to 4 . The chute structure 124 on the side is used to fix the battery pack 100 on the battery rack 112, prevent the battery pack 100 from moving left, right/front and back relative to the battery rack 112, and ensure that only suitable battery packs 100 are installed in the correct direction. correct position on the battery holder 112. As shown in the figure, the left and right sides 138C of the battery holder housing 138 each have a set of protrusion structures 122 for matching with the slide groove structures 124 on the left and right sides of the battery pack housing 102 . Alternatively, the battery rack 112 may be provided with a sliding groove structure corresponding to the protrusion structure provided on the battery pack 100 . Optionally, the battery rack 112 and the battery pack 100 may have more protrusions/sliding groove structures with different numbers at corresponding positions. Preferably, the protruding strip structure 122 can be integrally formed with the battery rack housing 138 , or can be arranged on the surface of the battery rack housing 138 in different joint manners. Preferably, the battery frame 112 has an at least partially open structure. When the battery pack 100 is fixed on the battery frame 112 , at least part of the battery pack 100 is not surrounded by the battery frame case 138 . Advantageously, the open structure allows the battery rack 112 to accommodate battery packs 100 of different sizes/capacities, such as 16-cell, 48-cell, 64-cell, etc. battery packs 100 that also operate at 58V, thus suiting different applications.

Optionally, the battery holder housing 138 has mounting holes 140 for fitting fasteners such as screws to mount the battery holder 112 on different housings/surfaces, such as housings of electric tools. Alternatively, the battery holder 112 may be fixed/mounted to the housing of the power tool in other fastening manners. The battery holder housing 138 may also be integrally formed with other housings or components.

Preferably, the battery holder 112 also has a connection terminal 132 . As shown in FIGS. 10 to 12 , the connecting terminals are located at the main portion 138A of the battery rack housing 138 approximately near the bottom 138B, and include metal sheets penetrating through the outer surface 138E and the inner surface 138I of the battery rack housing 138 . As an example, one end of the connection terminal 132 located at the outer surface 138E of the battery holder housing 138 can be used to connect the power part of the electric tool (or the control circuit/element of the electric tool), while the connection terminal 132 is located at the end of the inner surface 138I of the battery holder housing 138. One end can be used to connect the battery pack 100, and is located at the battery pack connection terminal 106 of the battery pack 100 as shown in FIGS. The connection terminal 132 is electrically connected. The connection terminal 132 may have more than one set of metal sheets, and have a shape corresponding to the connection terminal to be connected. For example, the connection terminal 132 can have four groups of metal sheets, which respectively correspond to the metal clips 106 of the power supply (+), power supply (-), information (+), and information (-) of the battery pack 100 shown in FIGS. 1 to 4 , And/or correspond to the metal clips provided in the electric tool. Alternatively, the connection between the connection terminal 132 and the power components in the electric tool (or the control circuit/element of the electric tool) can be connected in other ways such as welding.

Preferably, the battery pack fixing member 114 further includes a locking tongue 126 . 10 to 16, the locking tongue 126 has a certain length, and is arranged on the outer surface 138E of the main part 138A of the battery rack housing 138, and penetrates through the main part 138A of the battery rack housing 138 through the opening on the battery rack housing 138. And protrudes to the inner surface 138I. Preferably, the locking tongue 126 is made of the same material as the battery rack housing 138 , or is made of a different material. The locking tongue can have a generally "L"-shaped or "T"-shaped cross-section and is hinged to the outer surface 138E of the main portion 138A of the battery holder housing 138 so that the locking tongue 126 can be in the locked position (the locking tongue 126 protruding to the inner surface 138I) and the unlocked position (latch bolt 126 does not protrude to inner surface 138I). When the battery pack 100 is placed on the battery rack 112, the locking tongue 126 is configured to cooperate with the lock groove 128 of the battery pack 100 to fix the battery pack 100 on the battery rack 112, preventing the battery pack 100 from moving up and down relative to the battery rack 112. displacement.

Optionally, the battery pack fixing member 114 further includes an actuator 142, which includes an unlocking tongue 142B extending downward from the button portion 142A, and is disposed on the outer surface 138E of the main portion 138A of the battery holder housing 138. , the locking tongue 126 is at the upper position. As shown in FIGS. 15 to 16 , when the button 142A is pressed, the unlocking tongue 142B pushes the locking tongue 126 outwards, and thus releases the engagement of the locking tongue 126 of the battery holder 112 with the locking groove 128 of the battery pack 100 to cause lock and allow the battery pack 100 to be removed from the battery holder 112. The battery pack mount 114 also includes a resilient member 144, such as a torsion spring 144A disposed at the hinged position of the deadbolt and/or a compression spring 144B connected to the button portion of the actuator, for when the actuator 142 (button 142A) is released When the locking tongue 126 and/or the actuator 142 are reset, when the battery pack 100 is installed on the battery rack 112 again, the battery pack 100 will be locked on the battery rack 112 due to the cooperation of the protruding locking tongue 126 and the locking groove 128. superior. Alternatively, the actuator 142 may be positioned in a different position to actuate the deadbolt 126 .

When the user needs to operate the electric tool, firstly, the battery pack 100 can be lifted by the handle 108 of the battery pack, and aligned with the chute 124 on both sides of the battery pack 100 and the protruding strips 122 on both sides of the battery holder 112, and then along the chute 124 Install the battery pack 100 downward to the bottom of the battery rack 112 in the direction of the protruding bar 122 , and the locking tongue 126 protrudes due to the action of the torsion spring 144A and cooperates with the locking groove 128 to lock the battery pack 100 to the battery rack 112 . Moreover, the connection terminal 132 of the battery holder 112 is coupled to the battery connection terminal 106 of the battery pack 100, so the battery 104 in the battery pack 100 is electrically connected to the power components of the power tool and can drive the power tool. When the user needs to remove the battery pack 100 from the electric tool/battery rack 112, the actuator 142 or the button 142A can be pressed and the lock of the battery pack 100 and the battery rack 112 is released, and the handle 108 of the battery pack is used to lift the battery pack relative to the battery rack 112. The battery pack 100 is removed from the battery holder 112 or power tool.

Referring to FIG. 1 and FIG. 17 to FIG. 20 , the utility model provides a charger 170 configured to charge a battery pack 100 for an electric tool, comprising: a charger housing 172 ; a battery pack fixing member 114 , which is arranged on the charger housing 172; and a connection terminal 132, which is configured to electrically connect the charging circuit 174 of the charger with the battery pack 100; it is characterized in that: the battery pack 100 A battery pack fixing structure 110 is provided; wherein, when the battery pack 100 is placed on the charger 170, the battery pack fixing member 114 is configured to cooperate with the battery pack fixing structure 110 to fix the battery The pack 100 is on the charger 172 , and the battery pack 100 is in electrical communication with the charging circuit 174 through the connecting terminal 132 .

As shown in FIGS. 17 to 20, the charger 170 has a battery holder 112 as shown in FIG. The charger housing 172 is integrally formed, or the battery holder 112 can be fitted with fasteners such as screws through the mounting holes 140 to install the battery holder 112 on the charger housing 172 . The charger housing 172 can be made of the same or different materials as the battery holder housing 138 according to different requirements.

Referring to FIG. 20 , the charger 170 has a charging circuit 174 provided on a circuit board configured to convert power input to the charger 170 into power suitable for charging the battery pack 100 . For example, the charging circuit 174 has the function of converting the 110V-220V AC power supplied by the main power line 176 into the DC power of about 58V (or any suitable charging voltage/current) and inputting it to the battery pack 100 for charging. Optionally, the charging circuit 174 may have other monitoring functions such as charging current, voltage, temperature, remaining power of the battery pack 100 and the like. Preferably, the charging circuit 174 is connected to the connecting terminal 132 of the battery rack 112 with a connecting wire 178, so when the battery pack 100 is placed on the charger 170 or the battery rack 112, the battery pack 100 and the charging circuit 174 are connected to each other through the connecting terminal 132. Electrical communication of wire 178 is connected therein. The charger can also have other accessories, such as a fan 180 for promoting heat dissipation inside the charger 170 and an indicator light 182 for displaying the charging status, and the charger housing 172 can be provided with openings 184 at corresponding positions to provide these heat dissipation/indications Features.

When the user needs to repair the battery pack 100, he can first use the handle 108 of the battery pack to lift the battery pack 100, and align the chute 124 on both sides of the battery pack 100 with the convex strips 122 on both sides of the battery holder 112 on the charger 170, Then install the battery pack 100 down to the bottom of the battery rack 112 along the direction of the slide groove 124 and the protruding bar 122, and the locking tongue 126 will protrude due to the action of the torsion spring 144A and cooperate with the locking groove 128 to lock the battery pack 100 to the bottom of the battery rack 112. charger 170 or battery holder 112. Moreover, the connection terminal 132 of the charger 170 or the battery holder 112 is coupled with the battery connection terminal 106 of the battery pack 100, so the battery 104 in the battery pack 100 is electrically connected with the charging circuit 174 of the charger 170 and can receive the charging circuit 174. output charging power. When the user needs to remove the battery pack 100 from the charger 170 or the battery rack 112, the actuator 142 or the button 142A can be pressed and the lock of the battery pack 100 from the charger 170 or the battery rack 112 can be released, and the handle 108 of the battery pack can be used. The battery pack 100 is lifted relative to the charger 170 or the battery holder 112 and removed from the charger 170 or the battery holder 112 .

Therefore, after introducing several embodiments, those skilled in the art can realize that various modifications, other structures, and equivalents can be used without departing from the essence of the present invention. Correspondingly, the above description should not be viewed as limiting the scope of the present invention defined by the claims of the present application.

Claims (19)

1., for a battery pack for electric tool, have:

Battery housing;

Battery, it is arranged in described battery housing; And

Battery pack splicing ear, it is configured to the described battery in the Power Component of electric tool described in electric connection and described battery housing;

It is characterized in that, described battery housing is provided with battery pack handle, and battery set fixing structure; Wherein, described battery pack is configured to be fixed on the battery carrier on described electric tool separably; When described battery pack is placed on described battery carrier, described battery set fixing structure is configured to coordinate the battery pack fixture on described battery carrier with fixing described battery pack on described battery carrier, and described battery and described Power Component are by described battery pack splicing ear electric connection.

2. battery pack as claimed in claim 1, it is characterized in that, described battery pack also has battery control panel, and it is configured to the operation controlling described battery pack.

3. battery pack as claimed in claim 2, it is characterized in that, described battery control panel is provided with described battery pack splicing ear.

4. battery pack as claimed in claim 1, it is characterized in that, described battery pack fixture comprises cord tissue, and described battery set fixing structure comprises sliding groove structure, and it is configured to the described cord tissue coordinated on described battery carrier.

5. battery pack as claimed in claim 1, it is characterized in that, described battery pack fixture comprises dead bolt, and described battery set fixing structure comprises locked groove, and it is configured to the described dead bolt coordinating described battery carrier.

6. battery pack as claimed in claim 1, it is characterized in that, described battery housing has the profile of rectangular shaped post.

7., for a battery carrier for electric tool, it is configured to self-contained battery group separably, on described electric tool, has:

Battery carrier housing;

Battery pack fixture, it is arranged on described battery carrier housing; And

Splicing ear, it is configured to the Power Component of electric tool described in electric connection and described battery pack;

It is characterized in that, described battery pack is provided with battery set fixing structure; Wherein, when described battery pack is placed on described battery carrier, described battery pack fixture is configured to coordinate described battery set fixing structure with fixing described battery pack on described battery carrier, and described battery pack passes through described splicing ear electric connection with described Power Component.

8. battery carrier as claimed in claim 7, it is characterized in that, described battery pack fixture comprises cord tissue, and described battery set fixing structure comprises sliding groove structure, and it is configured to the described cord tissue coordinated on described battery carrier.

9. battery carrier as claimed in claim 7, it is characterized in that, described battery pack fixture comprises dead bolt, and described battery set fixing structure comprises locked groove, and it is configured to the described dead bolt coordinating described battery carrier.

10. battery carrier as claimed in claim 9, it is characterized in that, described battery pack fixture also comprises actuated piece, its locking being configured to remove described dead bolt and described coordinating of locked groove and causing.

11. battery carriers as claimed in claim 10, it is characterized in that, described battery pack fixture also comprises elastic component, and it is configured to described dead bolt and/or described actuated piece be resetted when described actuated piece is released.

12. battery carriers as claimed in claim 7, it is characterized in that, described battery carrier has at least part of Open architecture, and when described battery pack is fixed on described battery carrier, at least part of described battery pack is not surrounded by described battery carrier housing.

13. 1 kinds of chargers, it is configured to charge to the battery pack for electric tool, has:

Charger shell;

Battery pack fixture, it is arranged on described charger shell; And

Splicing ear, it is configured to the charging circuit of charger described in electric connection and described battery pack;

It is characterized in that, described battery pack is provided with battery set fixing structure; Wherein, when described battery pack is placed on described charger, described battery pack fixture is configured to coordinate described battery set fixing structure with fixing described battery pack on described charger, and described battery pack passes through described splicing ear electric connection with described charging circuit.

14. chargers as claimed in claim 13, it is characterized in that, described charger has battery carrier; Wherein, described battery carrier has:

Battery carrier housing, described battery carrier housing forms described charger shell at least partially;

Described battery pack fixture, it is arranged on described battery carrier housing; And

Described splicing ear,

Wherein, when described battery pack is placed on described battery carrier, described battery pack fixture is configured to coordinate described battery set fixing structure to fix described battery pack on described battery carrier.

15. chargers as claimed in claim 14, it is characterized in that, described battery pack fixture comprises cord tissue, and described battery set fixing structure comprises sliding groove structure, and it is configured to the described cord tissue coordinated on described battery carrier.

16. chargers as claimed in claim 14, it is characterized in that, described battery pack fixture comprises dead bolt, and described battery set fixing structure comprises locked groove, and it is configured to the described dead bolt coordinating described battery carrier.

17. chargers as claimed in claim 16, it is characterized in that, described battery pack fixture also comprises actuated piece, and it is configured to remove the locking that described dead bolt caused with described coordinating of locked groove.

18. chargers as claimed in claim 17, it is characterized in that, described battery pack fixture also comprises elastic component, and it is configured to described dead bolt and/or described actuated piece be resetted when described actuated piece is released.

19. chargers as claimed in claim 14, it is characterized in that, described battery carrier has at least part of Open architecture, and when described battery pack is fixed on described battery carrier, at least part of described battery pack is not surrounded by described battery carrier housing.