Charging and discharging control circuit of integrated energy storage machine

Abstract

The utility model belongs to the technical field of charging and discharging of energy storage machines, and particularly discloses a charging and discharging control circuit of an integrated energy storage machine, which comprises an energy storage module connected with a charging and discharging switching module used for charging or discharging switching; one end of the management module is connected with a power supply module with an overcharge protection function; according to the utility model, through the cooperation of the energy storage module, the charging and discharging switching module, the management module and the protection module, the protection module is used for carrying out overheating protection on the energy storage module and the charging and discharging switching module, and the power supply module has an overcharging protection function. The overheat protection and the overcharge protection are added around the power supply module, so that the power supply can be quickly cut off under the abnormal condition of the circuit, the fault expansion is prevented, and the circuit protection cost is reduced to a certain extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of charging and discharging technology of energy storage machine, concretely to a charging and discharging control circuit of integrated energy storage machine. BACKGROUND

[0002] Integrated energy storage machine is a new energy storage device integrating energy storage device and power conversion equipment, which highly integrates energy storage device and power conversion equipment to form a compact, efficient, easy-to-deploy and manage overall system.

[0003] At present, the charging and discharging control mode of integrated energy storage machine is to act in response to a charging and discharging enable signal through a switching module and a charging and discharging switching module, such as the patent document application No. 202280004716.1, which discloses a charging and discharging circuit, a charging and discharging system and a charging and discharging control method. The charging and discharging circuit includes a power supply module, a switching module, an energy storage module and a charging and discharging switching module. The switching module, the charging and discharging switching module and the power supply module are connected in parallel. The first end of the energy storage module is connected to the switching module, and the second end of the energy storage module is connected to the charging and discharging switching module. The switching module and the charging and discharging switching module are used to act in response to a charging and discharging enable signal to generate an alternating current in the charging and discharging circuit. The charging and discharging circuit of the application can respond to the charging and discharging enable signal to act, and an alternating current is generated in the charging and discharging circuit. The alternating current generates heat in the power supply module, thereby heating the power supply module, which can effectively suppress the vibration noise of the motor and solve the problem of excessive vibration noise of the motor in the process of heating the power battery using the motor circuit in the traditional power battery heating technology.

[0004] However, the above charging and discharging circuit directly heats the power supply module by alternating current, which poses a safety hazard to the circuit, such as overheating and short circuit, and additional protection measures are needed to ensure the safety of the circuit, increasing the circuit protection cost of the power supply module. Therefore, we need to propose a charging and discharging control circuit of integrated energy storage machine to solve the above problems, which can increase the overheat protection and overcharge protection around the power supply module to ensure that the circuit can quickly cut off the power supply in abnormal conditions, prevent the fault from expanding and reduce the circuit protection cost. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a charging and discharging control circuit of integrated energy storage machine, which can increase the overheat protection and overcharge protection around the power supply module to ensure that the circuit can quickly cut off the power supply in abnormal conditions, prevent the fault from expanding and reduce the circuit protection cost, thereby solving the problems raised in the background technology.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a kind of integrated energy storage machine's charge-discharge control circuit, comprising: energy storage module, the energy storage module is connected with the charge-discharge switching module for charging or discharging switching, the charge-discharge switching module includes charging control unit, discharging control unit and the connection control unit for connecting energy storage module, the connection control unit is connected with charging control unit and discharging control unit respectively;

[0007] management module, one end of the management module is connected with the power supply module with overcharge protection function, the other end of the management module is electrically connected with charging control unit, discharging control unit and connection control unit respectively;

[0008] protection module for overheat protection to energy storage module and charge-discharge switching module, the protection module is electrically connected with management module.

[0009] Preferably, the charging control unit includes an operator U9A connected to the management module, the output of the operator U9A is connected to a resistor R36, one end of the resistor R36 is connected to a triode Q3, the collector of the triode Q3 is connected to a resistor R31, one end of the resistor R31 is connected to a triode Q4, the emitter of the triode Q4 is connected to VCC, the collector of the triode Q4 is connected to the connection control unit, and the emitter of the triode Q3 is grounded.

[0010] Preferably, the discharging control unit includes an operator U9B connected to the management module, the output of the operator U9B is connected to a resistor R35, one end of the resistor R35 is connected to a triode Q7, the collector of the triode Q7 is connected to a resistor R34, and the other end of the resistor R34 is connected to the connection control unit.

[0011] Preferably, the connection control unit includes a triode Q6 connected to one end of the resistor R34 and a triode Q5 connected to the triode Q4, the emitter of the triode Q5 is connected to a resistor R32, one end of the resistor R32 is connected to a resistor R33, one end of the resistor R33 is connected to the collector of the triode Q6, and the connection end of the resistor R33 and the resistor R32 is connected to the energy storage module.

[0012] Preferably, the energy storage module includes a battery pack, the battery pack is formed by connecting a battery BAT1, a battery BAT2 and a battery BAT3 in series, one end of the battery BAT1 is connected to a resistor R11 and a capacitor C6, the connection end of the battery BAT2 and the battery BAT1 is connected to a resistor R10 and a capacitor C5, the connection end of the battery BAT2 and the battery BAT3 is connected to a resistor R9 and a capacitor C4, and the other end of the battery BAT3 is connected to a resistor R8 and a capacitor C3.

[0013] Preferably, the management module comprises a management chip U2, a thermistor NTC1 and a resistor R1 are connected in parallel to the TS pin of the management chip U2, a resistor R2 is connected to the CO pin of the management chip U2, one end of the resistor R2 is connected to a resistor R6 and a MOS tube Q1 connected to the integrated energy storage machine, the source of the MOS tube Q1 is connected to a MOS tube Q2, the connection end of the MOS tube Q1 and the MOS tube Q2 is connected to the VM pin of the management chip U2 through a resistor R4, the gate of the MOS tube Q2 is connected to the DO pin of the management chip U2 through a resistor R3, the drain of the MOS tube Q2 is connected to the CS pin of the management chip U2 through a resistor R5, and a ground capacitor C1 is connected to the connection end of the management chip U2 and the resistor R4.

[0014] Preferably, the protection module comprises a protection chip U3, an inductor L1 is connected to the 8 pin of the protection chip U3, a resistor R23 is connected between the 6 pin and the 7 pin of the protection chip U3, a ground capacitor C24 is connected to the connection end of the 6 pin of the protection chip U3 and the resistor R23, a ground resistor R25 and a resistor R24 for connecting VDD are connected in parallel to the 5 pin of the protection chip U3, a light emitting diode D2 and a resistor R21 are connected in series to the 3 pin of the protection chip U3, one end of the resistor R21 is connected to the charge control unit, a light emitting diode D1 and a resistor R22 are connected in series to the 4 pin of the protection chip U3, one end of the resistor R22 is connected to the discharge control unit, and a capacitor C23 is connected between the 1 pin and the 2 pin of the protection chip U3.

[0015] Preferably, the power supply module comprises a voltage stabilizing chip U1, a resistor R13 is connected to the 2 pin of the voltage stabilizing chip U1, one end of the resistor R13 is connected to a MOS tube Q3 for connecting the integrated energy storage machine, a resistor R12 is connected between the 1 pin and the 3 pin of the voltage stabilizing chip U1, a resistor R18 and a resistor R14 are connected in series to the connection end of the 1 pin and the resistor R12 of the voltage stabilizing chip U1, and the connection end of the resistor R14, the resistor R13 and the MOS tube Q3 are connected.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1、 the utility model discloses a power supply module, a charge and discharge switching module, a management module and a protection module cooperate, utilize the protection module to carry out the overheating protection to the energy storage module and the charge and discharge switching module, and the power supply module has the overcharge protection function, to complete the overheat protection and overcharge protection that have been added around the power supply module, to ensure that the circuit can cut off the power supply rapidly under abnormal conditions, prevent the fault from expanding, and reduce certain circuit protection cost.

[0018] 2、The utility model discloses a charging and discharging switching module that is composed of a charging control unit, a discharging control unit and a connection control unit, which can be flexibly switched between charging and discharging modes, thus being convenient for adapting to different application scenarios and requirements and improving the adaptability and practicality of the system. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a circuit diagram of the utility model;

[0020] Figure 2 It is a circuit diagram of the power supply module of the utility model;

[0021] Figure 3 It is a circuit diagram of the charging and discharging switching module of the utility model;

[0022] Figure 4 It is a circuit diagram of the protection module of the utility model;

[0023] Figure 5 It is a circuit diagram of the management module of the utility model. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a kind of integrated energy storage machine's charging and discharging control circuit, including energy storage module, management module and protection module, energy storage module is connected with the charging and discharging switching module for charging or discharging switching, charging and discharging switching module includes charging control unit, discharging control unit and the connection control unit for connecting energy storage module, connection control unit is connected with charging control unit and discharging control unit respectively;

[0026] Charging control unit includes the operator U9A connected with management module, the output of operator U9A is connected with resistance R36, one end of resistance R36 is connected with triode Q3, the collector of triode Q3 is connected with resistance R31, one end of resistance R31 is connected with triode Q4, the emitter of triode Q4 is connected VCC, the collector of triode Q4 is connected with connection control unit, the emitter of triode Q3 is grounded, control signal of management module is received by operator U9A, and the control of charging process is realized by the switch state of triode Q3 and Q4, resistance R36 and R31 play the role of current limiting and protection in circuit.

[0027] The discharge control unit includes an operator U9B connected to the management module, the output end of the operator U9B is connected with a resistor R35, one end of the resistor R35 is connected with a triode Q7, the collector of the triode Q7 is connected with a resistor R34, one end of the resistor R34 is connected with the other end of the connection control unit, the operator U9B receives the signal of the management module and performs corresponding operation processing, the output signal of the operator U9B is applied to the base of the triode Q7 through the resistor R35, and the triode Q7 is controlled to be turned on or turned off.

[0028] The connection control unit includes a triode Q6 connected with one end of the resistor R34 and a triode Q5 connected with the triode Q4, the emitter of the triode Q5 is connected with a resistor R32, one end of the resistor R32 is connected with a resistor R33, one end of the resistor R33 is connected with the collector of the triode Q6, the connection end of the resistor R33 and the resistor R32 is connected with the energy storage module, and the triode Q6 and the triode Q5 are adjusted according to the state of the triode Q7 to realize flexible switching between the charging mode and the discharging mode, so as to adapt to different application scenarios and requirements and improve the adaptability and practicability of the system.

[0029] The energy storage module includes a battery pack, the battery pack is composed of a battery BAT1, a battery BAT2 and a battery BAT3 connected in series, one end of the battery BAT1 is connected with a resistor R11 and a capacitor C6 connected to the ground, the connection end of the battery BAT2 and the battery BAT1 is connected with a resistor R10 and a capacitor C5 connected to the ground, the connection end of the battery BAT2 and the battery BAT3 is connected with a resistor R9 and a capacitor C4 connected to the ground, the other end of the battery BAT3 is connected with a resistor R8 and a capacitor C3 connected to the ground, the battery pack improves the voltage by connecting the batteries in series, and limits the current and stabilizes the voltage by connecting the resistors in series and the capacitors in parallel at the connection end of each battery, in the charging and discharging process, the resistors and the capacitors work together to ensure the safe, stable and efficient operation of the battery pack, at the same time, the chemical reaction inside the battery realizes the conversion between electrical energy and chemical energy, thereby completing the functions of energy storage and discharging.

[0030] One end of the management module is connected with a power supply module with overcharge protection function, the other end of the management module is electrically connected with the charging control unit, the discharge control unit and the connection control unit respectively;

[0031] The management module includes a management chip U2, the TS pin of the management chip U2 is connected in parallel with a thermistor NTC1 and a resistor R1, the CO pin of the management chip U2 is connected with a resistor R2, one end of the resistor R2 is connected with a resistor R6 and a MOS tube Q1 connected with the integrated energy storage machine, the source of the MOS tube Q1 is connected with a MOS tube Q2, the connection end of the MOS tube Q1 and the MOS tube Q2 is connected with the VM pin of the management chip U2 through a resistor R4, the gate of the MOS tube Q2 is connected with the DO pin of the management chip U2 through a resistor R3, the drain of the MOS tube Q2 is connected with the CS pin of the management chip U2 through a resistor R5, the connection end of the management chip U2 and the resistor R4 is connected with a ground capacitor C1, the connection end of the management chip U2 and the resistor R5 is connected with a ground capacitor C2, the thermistor NTC1 is used for monitoring the temperature of the battery pack, when the temperature of the battery pack is too high, the resistance value of the NTC1 decreases, the temperature signal received by the management chip U2 changes, and thus the protection mechanism is triggered to prevent the battery pack from overheating; the management chip U2 continuously monitors the voltage, current and temperature of the battery pack, when these parameters exceed the preset value, the management chip U2 outputs a control signal through the CO pin, which is transmitted to the gates of the MOS tube Q1 and the MOS tube Q2 through the resistor R2, the resistor R3 and the like, so as to control the switching state of them, at the same time, the resistor R4 and the resistor R5 monitor the voltage and current of the battery pack respectively, and feed back the information to the management chip U2, and the capacitors C1 and C2 play a voltage stabilizing role to ensure the voltage stability of the battery pack during the charging and discharging process.

[0032] The protection module is used for overheat protection of the energy storage module and the charging and discharging switching module, and is electrically connected with the management module.

[0033] The protection module includes a protection chip U3, the 8 pin of the protection chip U3 is connected with an inductor L1, the 6 pin and the 7 pin of the protection chip U3 are connected with a resistor R23, the connection end of the 6 pin of the protection chip U3 and the resistor R23 is connected with a ground capacitor C24, the 5 pin of the protection chip U3 is connected in parallel with a ground resistor R25 and a resistor R24 used for connecting VDD, the 3 pin of the protection chip U3 is connected in series with a light emitting diode D2 and a resistor R21, one end of the resistor R21 is connected with a charging control unit, the 4 pin of the protection chip U3 is connected in series with a light emitting diode D1 and a resistor R22, one end of the resistor R22 is connected with a discharging control unit, the 1 pin and the 2 pin of the protection chip U3 are connected with a capacitor C23, through the interaction of the protection chip U3 and the surrounding circuit components, the real-time monitoring and protection function of the battery pack is realized, when the abnormal parameter is detected, the module triggers the protection mechanism and takes corresponding protection measures to ensure the safe and stable operation of the system.

[0034] The power supply module comprises a voltage stabilizing chip U1, the 2-pin of the voltage stabilizing chip U1 is connected with a resistor R13, one end of the resistor R13 is connected with a MOS tube Q3 used for connecting with the integrated energy storage machine, the resistor R12 is connected between the 1-pin and the 3-pin of the voltage stabilizing chip U1, the resistor R12 is connected with the resistor R18 and the resistor R14 in series at the connecting end of the 1-pin of the voltage stabilizing chip U1, the resistor R14 is connected with the connecting end of the resistor R13 and the MOS tube Q3, the on-off state of the MOS tube Q3 is changed to realize the stability of the output voltage, when the voltage stabilizing chip U1 detects the abnormal output voltage or receives the external control signal, it can cut off or restore the power supply of the circuit by changing the on-off state of the MOS tube Q3, when the overcurrent occurs in the circuit, the resistor R13, the resistor R12, the resistor R18 and the resistor R14 can limit the size of the current, thereby preventing the circuit components from being damaged.

[0035] In summary, the protection module is used for overheat protection of the energy storage module and the charge-discharge switching module, and the power supply module has overcharge protection function, so that the overheat protection and the overcharge protection are added around the power supply module, so that the circuit can be quickly cut off in the abnormal condition, the fault is prevented from being expanded, and the circuit protection cost is reduced.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A charge-discharge control circuit of an integrated energy storage machine, characterized by: The utility model relates to a kind of energy storage module, charging and discharging switching module and management module, and the energy storage module includes: energy storage module, the energy storage module is connected with the charging and discharging switching module for charging or discharging switching, the charging and discharging switching module includes charging control unit, discharging control unit and the connection control unit for connecting energy storage module, the connection control unit is connected with charging control unit and discharging control unit respectively;Management module, one end of the management module is connected with the power supply module with overcharge protection function, the other end of the management module is electrically connected with charging control unit, discharging control unit and connection control unit respectively;Protection module for overheat protection to energy storage module and charging and discharging switching module, the protection module is electrically connected with management module. The charging control unit includes the calculator U9A connected with management module, the output of the calculator U9A is connected with resistance R36, one end of the resistance R36 is connected with triode Q3, the collector of the triode Q3 is connected with resistance R31, one end of the resistance R31 is connected with triode Q4, the emitter of the triode Q4 is connected with VCC, the collector of the triode Q4 is connected with connection control unit, the emitter of the triode Q3 is grounded. The discharging control unit includes the calculator U9B connected with management module, the output of the calculator U9B is connected with resistance R35, one end of the resistance R35 is connected with triode Q7, the collector of the triode Q7 is connected with resistance R34, one end of the resistance R34 is connected with the other end of connection control unit. The connection control unit includes triode Q6 connected with one end of resistance R34 and triode Q5 connected with triode Q4, the emitter of the triode Q5 is connected with resistance R32, one end of the resistance R32 is connected with resistance R33, one end of the resistance R33 is connected with the collector of triode Q6, the connection end of the resistance R33 and resistance R32 is connected with energy storage module.

2. The charge and discharge control circuit of an integrated energy storage machine according to claim 1, characterized in that: The energy storage module includes battery pack, the battery pack is formed by battery BAT1, battery BAT2 and battery BAT3 in series, one end of the battery BAT1 is connected with resistance R11 and ground capacitor C6 in series, the connection end of the battery BAT1 is connected with resistance R10 and ground capacitor C5 in series, the connection end of the battery BAT2 and battery BAT3 is connected with resistance R9 and ground capacitor C4 in series, the other end of the battery BAT3 is connected with resistance R8 and ground capacitor C3 in series.

3. The charge and discharge control circuit of an integrated energy storage machine according to claim 2, characterized in that: ​ 4. The charge and discharge control circuit of an integrated energy storage machine according to claim 3, characterized in that: ​ 5. The charge and discharge control circuit of an integrated energy storage machine according to claim 4, characterized in that: ​ 6. The charge and discharge control circuit of an integrated energy storage machine according to claim 5, wherein: The management module includes a management chip U2, a thermistor NTC1 and a resistor R1 are connected in parallel to the TS pin of the management chip U2, a resistor R2 is connected to the CO pin of the management chip U2, one end of the resistor R2 is connected to a resistor R6 and a MOS tube Q1 connected to the integrated energy storage machine, the source of the MOS tube Q1 is connected to a MOS tube Q2, the connection end of the MOS tube Q1 and the MOS tube Q2 is connected to the VM pin of the management chip U2 through a resistor R4, the gate of the MOS tube Q2 is connected to the DO pin of the management chip U2 through a resistor R3, the drain of the MOS tube Q2 is connected to the CS pin of the management chip U2 through a resistor R5, the connection end of the management chip U2 and the resistor R4 is connected to a ground capacitor C1, and the connection end of the management chip U2 and the resistor R5 is connected to a ground capacitor C2.

7. The charge and discharge control circuit of an integrated energy storage machine according to claim 6, wherein: The protection module includes a protection chip U3, an inductor L1 is connected to the 8 pin of the protection chip U3, a resistor R23 is connected between the 6 pin and the 7 pin of the protection chip U3, a ground capacitor C24 is connected to the connection end of the 6 pin of the protection chip U3 and the resistor R23, a ground resistor R25 and a resistor R24 for connecting VDD are connected in parallel to the 5 pin of the protection chip U3, a light emitting diode D2 and a resistor R21 are connected in series to the 3 pin of the protection chip U3, one end of the resistor R21 is connected to the charge control unit, a light emitting diode D1 and a resistor R22 are connected in series to the 4 pin of the protection chip U3, one end of the resistor R22 is connected to the discharge control unit, and a capacitor C23 is connected between the 1 pin and the 2 pin of the protection chip U3.

8. The charge and discharge control circuit of an integrated energy storage machine according to claim 7, characterized in that: The power supply module includes a voltage stabilizing chip U1, a resistor R13 is connected to the 2 pin of the voltage stabilizing chip U1, one end of the resistor R13 is connected to a MOS tube Q3 for connecting to the integrated energy storage machine, a resistor R12 is connected between the 1 pin and the 3 pin of the voltage stabilizing chip U1, a resistor R18 and a resistor R14 are connected in series to the connection end of the 1 pin and the resistor R12 of the voltage stabilizing chip U1, and the connection end of the resistor R14, the resistor R13 and the MOS tube Q3 is connected.

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