WO2012102461A1 - Battery charging/discharging control circuit using microcomputer - Google Patents

Abstract

The present invention relates to a battery charging/discharging control circuit using a microcomputer which charges a charger and a capacitor in parallel using a previously-programmed microcomputer, and can simultaneously supply electric power to a load, and can be used as a substitute for commercial power in an emergency. To this end, the present invention provides a battery charging/discharging control circuit, including: a power supply circuit unit (100) which supplies the power of an AC 220V commercial power source (110) in a normal state, supplies the power of an AC 220V generator power source (120) in a power failure state, and has a first protection circuit (130) for protecting a step-down transformer (210, T1) in an abnormal voltage state; a rectification circuit unit (200) having the step-down transformer (210) for transforming a high 220V voltage to a low voltage, a bridge diode (220) for transforming the low AC voltage transformed through the step-down transformer to a DC voltage, a second protection circuit (230) for protecting circuit elements of a secondary side in an overload state, and a smoothing capacitor (240, C2) for removing ripple components on the circuit due to the harmonic noise included in the DC power outputted from the bridge diode; a constant power supply circuit unit (300) which is connected between an output terminal of the second protection circuit (230) of the rectification circuit unit (200) and an output terminal (8) of an inverter circuit unit (600) and constantly supplies a VCC voltage through a constant voltage regulator (Q11), a diode (D2), and a smoothing capacitor (C5); a monitoring control circuit unit (400) which receives the VCC voltage from the constant power supply circuit unit (300) to control all parts of the circuit, and monitors and controls the state of a power failure of the commercial power source (110) in the power supply circuit unit (100), an abnormal state of a battery charging/discharging circuit unit (500), and first/second load voltage adjustment parts (710, 720) for stably supplying the voltage to a load (700); the battery charging/discharging circuit unit (500) having a charger charging/discharging circuit part (510) for charging/discharging a secondary battery (512) according to a control signal of the monitoring control circuit unit (400) and a capacitor charging/discharging circuit part (520) for charging/discharging a capacitor (522); and an inverter circuit unit (600) which supplies the VCC voltage to the monitoring control circuit unit (400) and supplies electric power to the load (700) by controlling the DC voltage discharged from the capacitor charging/discharging circuit (520) of the battery charging/discharging circuit unit (500). Accordingly, the present invention enables simultaneous charging and independent charging, can perform a function of an auxiliary power source using the discharging characteristics of the capacitor with respect to the load needing a momentary driving torque, and can immediately confirm the abnormal state.

Description

Battery charge / discharge control circuit using micom

The present invention relates to a charge / discharge control circuit of a battery, and in particular, using a pre-programmed microcomputer to charge and discharge a rechargeable battery and a capacitor in parallel, and at the same time, it is possible to supply power to a load and use it in an emergency. The present invention relates to a battery charge / discharge control circuit using a microcomputer that can be replaced with a power source.

Recently, a rechargeable / discharge type battery technology using a secondary battery and a capacitor has been proposed for use as a power source for induction lamps for emergency occurrences in buildings, as well as various electric devices and portable terminal devices.

For example, according to the rechargeable power supply apparatus and control method thereof of Korean Patent Publication No. 10-0855871 (2008. 09. 03.) proposed by the present applicant,

A conversion unit for converting AC power into DC power for charging, a switching unit for switching to form a charging path or a supply path according to the supply / blocking of the AC power, and supply / blocking to coils of the switching module of the switching unit Two switching terminals to form the charging path or the supply path according to the current to be supplied, the DC power converted by the conversion unit is supplied through the charging path to charge the charging capacitor or the light emitting device when the AC power is cut off By configuring the charging unit for supplying the DC power charged to the charging capacitor through the supply path to be turned on, a rechargeable capacitor is used to fully utilize during power failure due to the improvement of the charge / discharge efficiency.

However, in implementing the patented technology, a circuit for controlling a charging voltage and a discharge voltage / current to be controlled due to a problem of a potential difference and an impedance between a capacitor and a capacitor generated in a charging circuit of a capacitor capacitor of an analog circuit is analog. Since it is a control circuit of the type, there is a problem in that it is quite complicated to uniformly control the time constant ratio of the circuit.

In addition, since the patented technology does not provide the limit of the life of the battery and the instantaneous discharge output, there are many difficulties in developing the mobile device such as an electric vehicle requiring instant starting torque.

In addition, since the patent technology is an analog method, the ratio of two energy charging sources, that is, the difference between the current and the voltage is controlled by using a resistor and a diode, thereby increasing the number of devices included in the control device, thereby increasing the manufacturing cost.

In order to solve this problem, the use of two rechargeable batteries and capacitors as well as the protection of the rechargeable battery and the capacitor during charging were required, and an efficient improvement plan was needed. The use of Micom, which is programmable and allows the amount of incoming current to be controlled by digitized signaling, could be a good alternative to this problem. That is, the charging circuit by the program using the microcomputer is more stable, and the efficient charging method for the individual is possible regardless of which rechargeable secondary battery is used, so that the charging speed and the amount of charging can be sufficiently controlled. In particular, the microcomputer can measure the current and voltage even if different voltages and currents are supplied, compared to the conventional analog method in which the potentials supplied to the rechargeable battery and the capacitor are compared by using a resistor and a diode. The power supply can be greatly enhanced, and the software can solve the problems that cannot be solved by the hardware.

An object of the present invention has been made to solve the above-mentioned conventional problems, more specifically, a pre-programmed micom to enable a proportional control by measuring the current and voltage for the charging circuit and the load. By configuring the used charge / discharge control circuit, simultaneous charging and independent charging are possible, and the parallel charging / battery using the microcomputer that can actively respond to the load requiring the instantaneous starting torque as a spare power supply by using the discharge characteristic of the capacitor. Provide a discharge control circuit.

According to a feature of the present invention for achieving the above object, in the charge / discharge control circuit of the battery, the control circuit, usually supply the AC 220V commercial power supply 110, in case of power failure AC 220V generator power supply ( A power supply circuit unit 100 having a first protection circuit 130 to supply 120 and to protect the step-down transformers 210 and T1 during an abnormal voltage invasion; Connected to the power supply circuit unit 100, the step-down transformer 210 for lowering the 220V high voltage to low voltage and the bridge diode 220 for converting the AC voltage of the low voltage down from the step-down transformer into a DC voltage and secondary when overloaded A second protection circuit 230 for protecting circuit elements on the side and smoothing capacitors 240 and C2 for removing ripple components on the circuit due to harmonic noise included in the DC power output from the bridge diode. A rectifier circuit part 200; It is connected between the output terminal 8 of the second protection circuit 230 of the rectifier circuit unit 200 and the output terminal 8 of the inverter circuit unit 600, the constant voltage regulator (Q11) and diode (D2) and smoothing capacitor (C5) A constant power supply circuit unit 300 to supply the VCC voltage at all times; Receiving the VCC voltage of the power supply circuit unit 300 to control the entire circuit, the power supply circuit unit 100 whether the power outage for the commercial power 110 and whether the battery charge / discharge circuit unit 500 abnormality and A supervisory control circuit unit 400 for supervising and controlling the first and second load voltage regulating units 710 and 720 so that a stable voltage is supplied to the load 700; Capacitor charge / discharge circuit unit 520 to charge / discharge the rechargeable battery charge / discharge circuit unit 510 and the capacitor 522 to charge / discharge the secondary battery 513 in response to the control signal of the monitoring control circuit unit 400. A battery charge / discharge circuit unit 500 having a); Inverter circuit unit for controlling the DC voltage discharged from the capacitor charge / discharge circuit 520 of the battery charge / discharge circuit unit 500 to supply power to the VCC voltage of the supervisory control circuit unit 400 and the load 700 ( Provides a battery charge / discharge control circuit using a microcomputer, characterized in that 600).

Preferably, the first protection circuit 130, the voltage non-linearity to protect the step-down transformers 210, T1 by promoting the blown fuse (F1) when the power supply circuit unit 100 invades the abnormal voltage A resistor (Zinc Oxide Nonlinear Resistor: ZNR) 131 is included.

Preferably, the monitoring control circuit unit 400 is normally operated by receiving the VCC power from the constant voltage regulator (Q11) of the power supply circuit unit 300, the first to display the abnormality of the commercial power supply (110) When the first display unit 410 and the second display unit 420 indicating abnormality of the battery charge / discharge circuit unit 500 are controlled, and the commercial power supply 110 is out of power, the capacitor charge / discharge circuit unit ( Remote to perform a switching operation function so that the generator power 120 of the power supply circuit unit 100 is supplied to the DC voltage discharged from the capacitor 522 of the 520 is supplied to the VCC voltage controlled through the inverter circuit unit 600. The microcomputer 440 to control the circuit unit 430 is characterized in that it is included.

Preferably, the monitoring control circuit 400 is characterized in that the device check switch 450 is included in order to allow the user to manually check whether there is an abnormality of the control circuit.

Preferably, the rechargeable battery charge / discharge circuit unit 510 includes a charge / discharge circuit using a transistor (Tr) and a diode (D) method, and during charging, the microcomputer 440 of the monitoring control circuit unit 400 is charged. A voltage obtained by receiving a pulse signal (PC2, PC3) of the rectified circuit rectified to DC in the rectifier circuit 200 and smoothed in the smoothing capacitor (240, C2) to remove the ripple component on the circuit to the transistor (Q5) After output, the charging current flows through the secondary battery 513 through the resistor R10, and when discharged, the voltage discharged from the secondary battery 513 is transferred to the microcomputer 440 of the monitoring control circuit unit 400. Receiving a pulse signal PD4 of the power supply) and the discharge voltage is supplied to the load 700 via the first load voltage control unit 710 through the transistor Q9 and the diode SS14. It is done.

Preferably, the secondary battery is a nickel cadmium (Ni-Cd) battery, nickel hydrogen (Ni-MH) battery, lead acid battery, lithium ion (Li-ion) battery, lithium polymer (Lithium Polymer: LPB) battery Which one is selected.

Preferably, the capacitor charge / discharge circuit unit 520 includes a charge / discharge circuit using a constant voltage regulator Q10 and an inductor (L1) method, and during charging, the supervisory control circuit unit 400 Receiving the pulse signal PD3 of the microcomputer 440 is rectified to DC in the rectifier circuit 200 and smoothed in the smoothing capacitors 240 and C2 to remove the ripple component on the circuit constant voltage regulator (Q10) After adjusting and outputting at, the charging current flows through a capacitor (or capacitor) 522 coupled in parallel and in parallel through a resistor R11, and during discharge, the voltage discharged from the capacitor 522 is discharged. The output terminal of the inverter circuit unit 600 is supplied to the VCC voltage of the constant power supply circuit unit 300 through the input terminals LX and 7 and the output terminal 8 of the inverter circuit unit 600 through L1. (8) through the pulse of the microcomputer 440 of the monitoring control circuit unit 400 The power is supplied to the load 700 via the second load voltage adjusting unit 720 operated by the pulse signal PD1.

Preferably, the control circuit is rectified to DC in the rectifying circuit unit 200 and smoothed in the smoothing capacitors 240 and C2 to remove the ripple component on the circuit of the microcomputer 440 of the monitoring control circuit unit 400. The power is supplied to the load 700 via the pulse signal PB1 of the first through the transistor Q12 and the diode D6 of the first load voltage adjusting unit 710.

Preferably, the rechargeable battery charge / discharge circuit unit 510 and the capacitor charge / discharge circuit unit 520 are connected to the pulse signals PC2, PC3, and PD3 of the microcomputer 440 of the supervisory control circuit unit 400. Simultaneous charging and independent charging is possible.

Preferably, the secondary tap voltages of the step-down transformers 210 and T1 may be used to simultaneously or independently supply power to the battery charge / discharge circuit unit 500 and the load 700. It is characterized in that it is determined according to the microcomputer 440 which is pre-programmed to enable proportional control by measuring the current and voltage of the charge / discharge circuit unit and the load.

According to the battery charge / discharge control circuit using the microcomputer of the present invention, the following effects are obtained.

According to the present invention, by configuring a battery charge / discharge control circuit using a pre-programmed micom to enable proportional control by measuring the current and voltage to the charging circuit and the load,

(1) The control circuit of the present invention can provide sufficient output even during discharge as well as ensuring sufficient stability as a backup power supply through a rechargeable battery and a capacitor using a secondary battery and a capacitor.

(2) Since the control circuit of the present invention has two or more rechargeable batteries and a capacitor-type power supply device, it is possible to rapidly charge and discharge the battery, significantly shortening the charging time, and actively coping with a device requiring an instant load.

(3) The control circuit of the present invention can contribute to energy saving by remarkably reducing power consumption consumed by periodic replacement of a secondary battery, which is a preliminary power supply device used in a fire lamp, fire induction lamp, or the like of a charge discharge lamp.

(4) Since the control circuit of the present invention provides a stable power supply, frequent replacement or replacement of a secondary battery can be significantly reduced even when used in an emergency or an emergency power supply device used in each home.

(5) The control circuit of the present invention can overcome the limitations of the emergency backup power supply device limited to the secondary battery currently defined by the Fire Act because the emergency backup power supply device using the secondary battery and the capacitor can be used.

(6) The control circuit of the present invention implements a capacitor control circuit using the instantaneous discharge characteristics and the quick charge characteristics of a capacitor, thereby improving the instantaneous power even in a control apparatus requiring instantaneous starting torque, such as a mobile device such as an electric vehicle. Can respond actively.

(7) Unlike the conventional control circuit of the present invention, even when only one expensive step-down transformer T1 is used, power is supplied to two batteries (battery and capacitor) to be charged simultaneously or independently, and simultaneously to a load. Power can be supplied.

( 8 ) Since the control circuit of the present invention is a digital control method using a microcomputer capable of simultaneously charging and discharging a secondary battery and a capacitor (or capacitor), it improves the utilization of the two elements and the existing analog method. Compared with the number of devices used, the device has a unique effect of reducing the loss of electrical energy generated in the charge / discharge circuit as well as its lifetime.

1 is a view showing a rechargeable power supply device and a control method of the prior art

Figure 2 is a block diagram showing the overall configuration for the battery charge / discharge control circuit using a microcomputer according to a preferred embodiment of the present invention

Figure 3 is a detailed circuit diagram of the overall configuration for the battery charge / discharge control circuit using a microcomputer according to a preferred embodiment of the present invention

4 is a diagram showing a power supply circuit unit for a battery charge / discharge control circuit using a microcomputer according to a preferred embodiment of the present invention.

5 is a view illustrating a rectifying circuit unit for a battery charge / discharge control circuit using a microcomputer according to an exemplary embodiment of the present invention.

FIG. 6 is a view illustrating a regular power supply circuit unit for a battery charge / discharge control circuit using a microcomputer according to a preferred embodiment of the present invention.

FIG. 7 is a diagram illustrating a monitoring control circuit unit for a battery charge / discharge control circuit using a microcomputer according to a preferred embodiment of the present invention.

8 is a view illustrating a rechargeable battery charge / discharge circuit unit which is a secondary battery for a battery charge / discharge control circuit using a microcomputer according to an exemplary embodiment of the present invention.

9 is a view showing a battery charge / discharge circuit unit for a battery charge / discharge control circuit using a microcomputer according to a preferred embodiment of the present invention

10 is a view showing a first load voltage control unit for a battery charge / discharge control circuit using a microcomputer according to an exemplary embodiment of the present invention.

11 is a view showing an inverter circuit unit and a second load voltage control unit for a battery charge / discharge control circuit using a microcomputer according to an exemplary embodiment of the present invention.

12 illustrates a load on a battery charge / discharge control circuit using a microcomputer according to a preferred embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

100: power supply circuit

110: commercial power

120: generator power

130: first protection circuit

131: voltage nonlinear resistor (ZNR)

200: rectifier circuit

210: step-down transformer

220: bridge diode

230: second protection circuit

240: smoothing capacitor

300: constant power supply circuit

Q10, Q11: constant voltage regulator

D2: Diode

C5: smoothing capacitor

400: supervisory control circuit

410: first display unit

420: second display unit

430: remote circuit

440: micom

450: device check switch

500: battery charge / discharge circuit

510: rechargeable battery charge / discharge circuit

511, 521: charging circuit

520: capacitor charge / discharge circuit

513: secondary battery

522 capacitors (capacitors)

600: inverter circuit part

700: load

710, 720: first / second load voltage control unit

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

First, in adding reference numerals to the elements of each drawing, it should be noted that the same reference numerals are used to refer to the same elements even though they are shown in different drawings. In describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

Referring to Figures 2 to 12, looking at the core technical configuration of the microcomputer battery charge / discharge control circuit according to a preferred embodiment of the present invention,

The power supply circuit unit 100, the rectifier circuit unit 200, the constant power supply circuit unit 300, the monitoring control circuit unit 400, the battery charge / discharge circuit unit 500, the inverter circuit unit 600 and the load 700 ( 2 and 3).

Referring to FIG. 4, the power supply circuit unit 100 is a means for supplying power to the battery charge / discharge circuit unit 500, the VCC voltage, and the load 700. In general, the power supply circuit unit 100 supplies the AC 220V commercial power 110. At the time of power failure while supplying AC 220V generator power (120).

In addition, when the abnormal voltage is invaded by a surge voltage such as a lightning strike and an external device, a first protection circuit 130 is provided to protect the step-down transformers 210 and T1.

When the first protection circuit 130 according to the embodiment of the present invention, the power supply circuit unit 100 is invaded by an abnormal voltage, the fuse (Fuse, F1) for protecting the circuit by the over-current is blown off A zinc oxide nonlinear resistor (ZNR) 131 for protecting the transformers 210 and T1 is included.

In this case, the ZNR is installed in parallel with the power input, and the main component of zinc oxide is to protect the step-down transformer and the circuit elements on the secondary side by causing the fuse to be quickly blown by overcurrent during an abnormal voltage invasion such as a surge voltage. A voltage nonlinear resistor is used. ZNR is a device such as a voltage variable resistor (Vistor) whose resistance is changed by voltage, and a varistor mainly refers to silicon carbide (SiC) or zinc oxide (ZnO).

In addition, the tap voltage on the secondary side of the step-down transformers 210 and T1 according to the embodiment of the present invention supplies power to the battery charge / discharge circuit unit 500 and the load 700 simultaneously or independently. To enable this, it is determined according to the use of the microcomputer 440 which is pre-programmed to allow proportional control by measuring the current and voltage of the battery charge / discharge circuit unit 500 and the load 700.

In other words, the use of a pre-programmed micom 440 according to an embodiment of the present invention, unlike the prior art, separately for the battery charge / discharge circuit portion 500 and the load 700, the step-down transformer 210, Instead of using each of T1), one step-down transformer 210 and T1 are used to supply the battery charge / discharge circuit unit 500 including the rechargeable battery charge / discharge circuit 510 and the capacitor charge / discharge circuit 520. In order to prevent an overload of one step-down transformer 210 or T1 even when the charging voltage supplied to the load 700 and the load voltage supplied to the load 700 are simultaneously supplied, the battery is charged / discharged using a pre-programmed microcomputer 440. Current and voltage of the circuit unit 500 and the load 700 were measured to enable a proportional control of power supply.

That is, whether to supply the power to be charged with the constant power only, the VCC voltage and the load directly, or to charge the battery charge / discharge circuit 510 and the capacitor charge / discharge circuit 520 of the battery charge / discharge circuit unit 500 In order to supply the VCC voltage and the load 700 by discharging the charged power, the microcomputer 440 of the supervisory control circuit unit 400 measures the current and voltage of the load according to the power supply so that the proportional control is performed. Since it is programmed in advance, it is possible to secure the stability and reliability of the power supply without using several expensive step-down transformers 210 and T1. In addition, by using only one step-down transformer (210, T1), the rectifying circuit unit 200 is significantly reduced accordingly, the ripple component caused by harmonic noise generated in the bridge diode (SS14) is significantly reduced, so as to supply a more stable VCC voltage Constant current and constant voltage can be stably supplied to the battery charge / discharge circuit unit 500 and the load 700. In addition, it is possible to reduce iron loss, hysteresis loss, and copper loss, which are inherent losses of the step-down transformers 210 and T1, so that energy use is more effective than the number of the same type of step-down transformers 210 and T1. Is much more effective.

In addition, in the embodiment of the present invention, since the capacitor charge / discharge circuit unit 520 using a capacitor (or capacitor) having excellent instantaneous discharge characteristics is constituted, the microcomputer 440 may be used as a commercial power source requiring instantaneous starting torque. Since the proportional control is performed by measuring the current and the voltage at, it is sufficient to use one step-down transformer (210, T1).

Therefore, the expensive step-down transformer (210, T1) and the number of elements is greatly reduced, there is a feature that can significantly lower the overall work process and manufacturing costs.

Referring to FIG. 5, the rectifier circuit part 200 is a means for converting AC power into DC power, and is connected to the power supply circuit part 100, and the step-down transformers 210 and T1 are configured to lower 220V high pressure to low pressure. And a second protection circuit using a bridge diode (SS14, 220) for converting the AC voltage of the low voltage down from the step-down transformer into a DC voltage and a fuse (Fuse, F2) for protecting the circuit elements on the secondary side in case of overload ( 230).

In addition, smoothing capacitors 240 and C2 are connected to remove a ripple component on the circuit caused by harmonic noise included in the DC power output by the bridge diodes SS14 and 220 of the rectifier circuit 200. have.

Meanwhile, in the embodiment of the present invention, the primary side of the step-down transformers 210 and T1 is AC 220V, and the secondary side determines the tap voltage according to the load capacity used, and multi-tap. It is also possible.

Referring to FIG. 6, the constant power supply circuit unit 300 is a means for supplying a constant VCC voltage to a control element such as a microcomputer or a lighting display element regardless of a power failure, and the second protection of the rectifier circuit unit 200 is performed. It is connected between the output terminal 8 of the circuit 230 and the output terminal 8 of the inverter circuit unit 600, and supplies the VCC voltage through the constant voltage regulator Q11, the diode D2 and the smoothing capacitor C5 at all times.

That is, the DC voltage through the bridge diodes SS14 and 220 and the smoothing capacitors 240 and C2 of the rectifying circuit unit 200 is adjusted to the voltage of the diode D2 and the smoothing capacitor C5 by the voltage regulated by the constant voltage regulator Q11. The VCC voltage is always supplied to the microcomputer 440 and the first and second display units 410 and 420 regardless of the power failure of the commercial power supplied from KEPCO.

In other words, in the embodiment of the present invention, the unique constant power supply circuit unit 300 is configured such that the VCC voltage is always supplied to the microcomputer 440 and the first and second display units 410 and 420 regardless of the power failure. .

That is, until the commercial power supply 110 is out of power, the power is always supplied to the power supply circuit unit 300 and the battery charge / discharge circuit unit 500 so that the VCC voltage is output and the rechargeable battery and the capacitor maintain the state of charge. If the commercial power supply 110 is out of power, the voltage charged in the rechargeable battery is discharged to the load 700, and the voltage charged in the capacitor is controlled by the inverter circuit unit 600 to control the diode D5 and the smoothing capacitor C5. To output the VCC voltage. At the same time, the microcomputer 440 of the supervisory control circuit unit 400 issues a command to the remote circuit 430 and switches the emergency generator power supply 120 to be supplied through the step-down transformers 210 and T1. When the power failure is released, an interlock circuit (not shown) is embedded in the power supply circuit unit 100 to automatically shut off the emergency generator power supply 120 and supply power to the commercial power supply 110 at all times.

Referring to FIG. 7, the supervisory control circuit unit 400 is a means for continuously supplying power to a circuit in preparation for a power failure of the commercial power supply 110. The supervisory control circuit unit 400 controls the VCC voltage of the continuous power supply circuit unit 300. It is supplied and controls the whole circuit.

In addition, the power supply circuit unit 100 to monitor and control the abnormal power or not according to the operation of the power supply circuit 110 and the battery charge / discharge circuit unit 500, the first voltage so that a stable voltage is supplied to the load 700 Monitor and control the second load voltage adjusting unit (710, 720).

In addition, the monitoring control circuit 400 according to the embodiment of the present invention is normally operated by receiving the VCC power supply from the constant voltage regulator Q11 of the power supply circuit unit 300, and also, of the commercial power supply 110 The driving of the first display unit 410 displaying abnormality and the second display unit 420 displaying abnormality of the battery charge / discharge circuit unit 500 are controlled. When the commercial power supply 110 is out of power, the DC voltage discharged from the capacitor 522 of the capacitor charging / discharging circuit 520 is supplied with the controlled VCC voltage through the inverter circuit unit 600 to supply the power supply circuit unit 100. Micom 440 for controlling the remote circuit 430 to be supplied with the emergency generator power 120 is included.

In addition, the monitoring control circuit 400 according to an embodiment of the present invention, the device check switch 450 is included in order to enable the user to manually check whether there is an abnormality of the control circuit.

Wherein the device check switch 450 according to an embodiment of the present invention, the push button (Push Button) method is configured, when the user pushes the push button once, the first display unit for displaying the presence or absence of the commercial power supply 110 The 'RED' indicator of 410 flashes, and when the pushbutton is pressed twice in succession, the monitoring control such that the 'GREEN' indicator of the second display unit 420 indicating whether the battery charge / discharge circuit unit 500 is abnormal blinks. It is programmed in advance in the microcomputer 440 of the circuit unit 400. In addition, the second display unit 420 constitutes a parallel circuit to distinguish whether or not an abnormality is generated in the rechargeable battery charge / discharge circuit 510 and the capacitor charge / discharge circuit 520 of the battery charge / discharge circuit unit 500. It can be configured so that the GREEN 'light can blink.

Referring to FIG. 8, the battery charge / discharge circuit unit 500 is a circuit means for charging and discharging a battery. The battery charge / discharge circuit unit 500 receives and receives a control signal from the supervisory control circuit unit 400 to charge and discharge the secondary battery 513. And a capacitor charge / discharge circuit 520 for charging and discharging the rechargeable battery charge / discharge circuit 510 and the capacitor (or capacitor) 522.

Here, the rechargeable battery charge / discharge circuit 510 includes a charging circuit 511, a discharge circuit 512, and a secondary battery 513, and the capacitor charging / discharging circuit 520 is directly connected to the charging circuit 521. A capacitor 522 configured in parallel is provided.

In addition, the rechargeable battery charge / discharge circuit 510 according to the embodiment of the present invention includes a transistor Tr and a charge / discharge circuit using a diode method. During charging, the pulse signals PC3 and PC2 of the microcomputer 440 of the supervisory control circuit unit 400 are received, rectified to DC by the rectifying circuit unit 200, and smoothed by the smoothing capacitors 240 and C2. After outputting the voltage ripple component removed in the circuit to the transistor (Q5), and regulates the voltage 20 ~ 30% higher than the voltage of the secondary battery 513 to the secondary battery 513 through the resistor (R10) Charge current flows. When discharged, the voltage discharged from the secondary battery 513 is discharged through the transistor Q9 and the diode SS14 by receiving the pulse signal PD4 of the microcomputer 440 of the supervisory control circuit unit 400. The voltage includes supplying power to the load 700 via the first load voltage adjusting unit 710 (see FIG. 10).

On the other hand, the secondary battery 513 according to an embodiment of the present invention is a nickel cadmium (Ni-Cd) battery, nickel hydrogen (Ni-) that can repeat the charging and discharging because the mutual conversion between chemical energy and electrical energy is reversible MH) battery, lead-acid battery, lithium-ion (Li-ion) battery, lithium polymer (Lithium Polymer: LPB) battery means any one of these batteries is selected as a secondary battery. A detailed description of the secondary batteries is omitted because they are well known in the battery industry.

In addition, the capacitor charge / discharge circuit 520 according to the embodiment of the present invention includes a charge / discharge circuit using a constant voltage regulator Q10 and an inductor L1. During charging, the pulse signal PD3 of the microcomputer 440 of the supervisory control circuit unit 400 is input, rectified to DC by the rectifying circuit unit 200, smoothed by the smoothing capacitors 240 and C2, and After the ripple component is removed, the voltage is adjusted to 20-30% higher than the charging voltage of the capacitor 522 combined in series and parallel in the constant voltage regulator Q10, and then output. 522 is charged by flowing a charging current. At the time of discharging, the voltage discharged from the capacitor 522 is transferred to the constant power supply circuit 300 through the input terminal LX, 7 and the output terminal 8 of the inverter circuit unit 600 through the inductor L1. It is supplied at VCC voltage. In addition, the second load voltage adjusting unit 720 is operated by the pulse signal PD1 of the microcomputer 440 of the monitoring control circuit 400 through the output terminal 8 of the inverter circuit unit 600. It includes supplying power to the load 700 via (see FIG. 11).

Referring to FIG. 11, the inverter circuit unit 600 is a means for controlling an output voltage regulated by using an LC resonant circuit and a chip CHIP-U1 having high circuit efficiency for a voltage discharged from a storage battery. The DC voltage discharged from the capacitor charge / discharge circuit 520 of the discharge circuit unit 500 is controlled to supply power to the VCC voltage and the load 700 of the supervisory control circuit unit 400.

The VCC voltage is supplied through the diode D5 and the smoothing capacitor C5 connected to the output terminal 8 of the inverter circuit unit 600.

In addition, referring to FIG. 11, the load 700 may be an emergency indicator light such as a corridor or a staircase inside a building, or may be a device requiring instant starting torque such as an electric vehicle. Therefore, in the embodiment of the present invention, the load 700 may be variable, and the battery capacity and configuration of the battery charge / discharge circuit unit 500 may be adjusted according to the embodiment of the present invention. .

On the other hand, according to an embodiment of the present invention, the control circuit of the present invention is rectified to DC in the rectifying circuit unit 200 to the DC voltage output from the smoothing capacitors 240 and C2 and the bridge diodes SS14 and 220. The first load voltage adjusting unit 710 receives a voltage from which the ripple component on the circuit is removed by smoothing the included high frequency noise from the pulse signal PB1 of the microcomputer 440 of the monitoring control circuit unit 400. It further includes the power is supplied to the load 700 via the transistor (Q12) and the diode (D6) of.

In addition, according to the embodiment of the present invention, the rechargeable battery charge / discharge circuit unit 510 and the capacitor charge / discharge circuit unit 520 may include a pulse signal PC2 of the microcomputer 440 of the supervisory control circuit unit 400. , PC3, PD3) includes simultaneous charging and independent charging.

Since simultaneous charging and independent charging have been described above sufficiently, a separate description thereof will be omitted.

2 to 12, the operation of the parallel charging / discharging control circuit of the rechargeable battery and the capacitor using the microcomputer according to the preferred embodiment of the present invention will be described in detail.

The present invention provides the power supply circuit unit 100 for supplying commercial power and emergency generator power, the rectifier circuit unit 200 to remove the ripple component due to the high frequency noise, and the constant power supply to the control circuit and the display element even in the case of power failure A constant power supply circuit unit 300, a control circuit, a power supply circuit unit, a battery charge / discharge circuit unit, and a supervisory control circuit unit 400 that monitors a load by receiving a VCC voltage from a constant power supply circuit during a power failure; The battery charge / discharge circuit unit 500 which receives the pulse signal of the supervisory control circuit unit and charges and discharges the rechargeable battery and the capacitor battery which are the secondary batteries by the transistor method and the regulator method, and the supervisory control circuit unit 300 at the time of power failure. Inverter circuit 600 for boosting the VCC voltage to be applied to the voltage discharged from the battery and corridors, stairs, etc. in the building The first and second display units 410 and 420 and a device check switch configured by a user to check a parallel charge / discharge control circuit of a rechargeable battery and a capacitor using a microcomputer including a load 700 such as an induction lamp 450), the simultaneous charging and the independent charging is possible, and for loads requiring instant starting torque, the discharge characteristics of the capacitors can be actively used as a preliminary power supply, and there is a unique feature that can immediately check for abnormalities.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

The present invention relates to an industry related to the charge / discharge control of a battery, and more particularly, it is possible to charge and discharge a rechargeable battery and a capacitor in parallel by using a pre-programmed micom, and to simultaneously supply power to a load. The present invention relates to a battery charge / discharge control circuit using a microcomputer that can be replaced with a commercial power source in an emergency.

Claims (10)

In the charge / discharge control circuit of the battery, The control circuit, the first supply to the AC 220V commercial power supply 110, the AC 220V generator power supply 120 in case of power failure, and to protect the step-down transformer (210, T1) in case of abnormal voltage invasion. A power supply circuit unit 100 having a protection circuit 130; Connected to the power supply circuit unit 100, the step-down transformer 210 for lowering the 220V high voltage to low voltage and the bridge diode 220 for converting the AC voltage of the low voltage down from the step-down transformer into a DC voltage and secondary when overloaded A second protection circuit 230 for protecting circuit elements on the side and smoothing capacitors 240 and C2 for removing ripple components on the circuit due to harmonic noise included in the DC power output from the bridge diode. A rectifier circuit part 200; It is connected between the output terminal 8 of the second protection circuit 230 of the rectifier circuit unit 200 and the output terminal 8 of the inverter circuit unit 600, the constant voltage regulator (Q11) and diode (D2) and smoothing capacitor (C5) A constant power supply circuit unit 300 to supply the VCC voltage at all times; Receiving the VCC voltage of the power supply circuit unit 300 to control the entire circuit, the power supply circuit unit 100 whether the power outage for the commercial power 110 and whether the battery charge / discharge circuit unit 500 abnormality and A supervisory control circuit unit 400 for supervising and controlling the first and second load voltage regulating units 710 and 720 so that a stable voltage is supplied to the load 700; Capacitor charge / discharge circuit unit 520 to charge / discharge the rechargeable battery charge / discharge circuit unit 510 and the capacitor 522 to charge / discharge the secondary battery 513 in response to the control signal of the monitoring control circuit unit 400. A battery charge / discharge circuit unit 500 having a); Inverter circuit unit for controlling the DC voltage discharged from the capacitor charge / discharge circuit 520 of the battery charge / discharge circuit unit 500 to supply power to the VCC voltage of the supervisory control circuit unit 400 and the load 700 ( Battery charging / discharging control circuit using a microcomputer, characterized in that it comprises 600). According to claim 1, The first protection circuit 130 is a voltage non-linear resistor (Zinc Oxide) to protect the step-down transformer (210, T1) by promoting the blown fuse (F1) when the power supply circuit unit 100 invades the abnormal voltage Nonlinear Resistor (ZNR) (131), characterized in that the battery charge / discharge control circuit using a microcomputer. According to claim 1, The monitoring control circuit unit 400 is normally operated by receiving VCC power from the constant voltage regulator Q11 of the power supply circuit unit 300, The driving of the first display unit 410 indicating the abnormality of the commercial power supply 110 and the second display unit 420 indicating the abnormality of the battery charge / discharge circuit unit 500 is controlled. In addition, when the commercial power supply 110 is out of power, the DC voltage discharged from the capacitor 522 of the capacitor charge / discharge circuit unit 520 is supplied with the VCC voltage controlled through the inverter circuit unit 600 to supply the power supply circuit unit ( Battery charging / discharging control circuit using a microcomputer, characterized in that the microcomputer 440 to control the remote circuit unit 430 performing a switching operation function so that the generator power 120 of the 100 is supplied. The method of claim 3, wherein The monitoring control circuit unit 400, the battery charge / discharge control circuit using a microcomputer, characterized in that the device check switch 450 is included in order to allow the user to manually check whether there is an abnormality of the control circuit. According to claim 1, The rechargeable battery charge / discharge circuit unit 510 includes a charge / discharge circuit using a transistor Tr and a diode D. During charging, the pulse signals PC2 and PC3 of the microcomputer 440 of the supervisory control circuit unit 400 are received, rectified to DC by the rectifying circuit unit 200, and smoothed by the smoothing capacitors 240 and C2. After outputting the voltage from which the ripple component on the circuit has been removed to the transistor Q5, a charging current flows through the secondary battery 513 through the resistor R10, and is charged. At the time of discharge, the voltage discharged from the secondary battery 513 receives the pulse signal PD4 of the microcomputer 440 of the supervisory control circuit unit 400 through the transistor Q9 and the diode SS14. The discharge voltage is a battery charge / discharge control circuit using a microcomputer, characterized in that the power is supplied to the load 700 via the first load voltage adjusting unit (710). The method of claim 5, The secondary battery may be selected from a nickel cadmium (Ni-Cd) battery, a nickel hydride (Ni-MH) battery, a lead acid battery, a lithium ion (Li-ion) battery, and a lithium polymer (Lithium Polymer: LPB) battery. Battery charge / discharge control circuit using a microcomputer, characterized in that. According to claim 1, The capacitor charge / discharge circuit unit 520 includes a charge / discharge circuit using a constant voltage regulator Q10 and an inductor L1. During charging, the pulse signal PD3 of the microcomputer 440 of the supervisory control circuit unit 400 is input, rectified to DC by the rectifying circuit unit 200, smoothed by the smoothing capacitors 240 and C2, and After adjusting and outputting the voltage from which the ripple component has been removed by the constant voltage regulator Q10, a charging current flows through a resistor R11 to a capacitor (or capacitor) 522 that is combined in series and in parallel. At the time of discharging, the voltage discharged from the capacitor 522 is transferred to the constant power supply circuit 300 through the input terminal LX, 7 and the output terminal 8 of the inverter circuit unit 600 through the inductor L1. Supply at VCC voltage, Through the output terminal 8 of the inverter circuit unit 600, the second load voltage adjusting unit 720 operated by the pulse signal PD1 of the microcomputer 440 of the supervisory control circuit unit 400 is operated. A battery charge / discharge control circuit using a microcomputer, characterized in that power is supplied to the load 700 via. According to claim 1, The control circuit is rectified to DC in the rectifying circuit unit 200 and smoothed in the smoothing capacitors 240 and C2 to remove a ripple component on the circuit. The pulse of the microcomputer 440 of the monitoring control circuit unit 400 ( Receiving a pulse signal (PB1) is supplied to the load 700 via the transistor (Q12) and the diode (D6) of the first load voltage control unit 710, the battery charge / using a microcomputer Discharge control circuit. According to claim 1, The rechargeable battery charge / discharge circuit unit 510 and the capacitor charge / discharge circuit unit 520 are simultaneously charged and discharged by pulse signals PC2, PC3, and PD3 of the microcomputer 440 of the supervisory control circuit unit 400. Battery charge / discharge control circuit using a microcomputer, characterized in that independent charging is possible. According to claim 1, The secondary tap voltages of the step-down transformers 210 and T1 may be configured to simultaneously or independently supply power to the battery charge / discharge circuit unit 500 and the load 700. And a battery charge / discharge control circuit using a microcomputer, characterized in that it is determined according to the microcomputer 440 which is pre-programmed to enable proportional control by measuring current and voltage with respect to the load.

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