Energy storage battery repairing device

Abstract

The utility model belongs to the technical field of energy storage batteries, and particularly relates to an energy storage battery repairing device. Comprising a CPU main control module, a battery charging control circuit and a battery discharging control circuit. The CPU main control module is respectively connected with the battery charging control circuit and the battery discharging control circuit; and the battery discharge control circuit is respectively connected with the battery and the program-controlled direct-current electronic load, and is used for controlling the connection and disconnection between the positive and negative electrodes of the battery and the positive and negative electrodes of the program-controlled direct-current electronic load port. The battery charging control circuit is connected with the battery and the program-controlled direct-current power supply and used for controlling connection and disconnection between the positive electrode and the negative electrode of the charging port of the program-controlled direct-current power supply and the positive electrode and the negative electrode of the battery. According to the device, the manufacturing cost of an energy storage battery repairing system is greatly reduced, the device has the advantages of small size, high automation degree, simplicity in use and the like, and the complexity of an operation process and the technical requirements on operators are greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage batteries, and particularly relates to an energy storage battery repair device. Background Art

[0002] After an energy storage battery has been used for a period of time, the active substances inside it will inevitably undergo a degradation process. This process not only reduces the storage capacity of the battery, but also causes the internal resistance to gradually increase, thereby affecting the charge and discharge efficiency and peak output power of the battery. To address this challenge, heat treatment technology has been developed in the current market to repair energy storage batteries, aiming to delay battery aging and improve its performance and safety. The heat treatment technology attempts to rearrange the ion distribution in the battery electrolyte by controlling high-temperature conditions, so as to restore some battery performance, especially to improve conductivity. Although this method is quite attractive in theory, in actual operation, if the temperature is not controlled properly, it may trigger battery thermal runaway and cause a more serious safety crisis.

[0003] Existing energy storage battery repair systems usually use an industrial control computer (referred to as an industrial computer) as the hardware core to control various related instruments and equipment to achieve the repair work of energy storage batteries. This kind of system is expensive and large in volume. Moreover, it is necessary to develop the control and communication software of the whole system on the industrial computer to realize the control and data acquisition functions of the industrial computer, and the software development cost is high. The energy storage battery repair process requires professional technicians to learn and perform complex operations on the industrial computer, and the degree of automation is low. Summary of the Invention

[0004] The utility model aims at the defects existing in the prior art and provides an energy storage battery repair device.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme. The energy storage battery repair device includes a CPU main control module, a battery charging control circuit, and a battery discharging control circuit; the CPU main control module is respectively connected to the battery charging control circuit and the battery discharging control circuit; the battery discharging control circuit is respectively connected to the battery and a programmable DC electronic load, and is used to control the on-off between the positive and negative electrodes of the battery and the positive and negative electrodes of the programmable DC electronic load port. The battery charging control circuit is respectively connected to the battery and a programmable DC power supply, and is used to control the on-off between the positive and negative electrodes of the charging port of the programmable DC power supply and the positive and negative electrodes of the battery.

[0006] Further, the battery charging control circuit includes an isolated power supply module P3, an optocoupler U11, an electromagnetic relay REL1, and an electromagnetic relay REL2. The input end of the isolated power supply module P3 is connected to a 24V DC power supply through an isolation transformer LDM1, and a first π-type LC filter branch is provided between the input end of the isolated power supply module P3 and the isolation transformer LDM1. The first π-type LC filter branch includes an inductor L3, a polarized capacitor E9 connected to the first end of the inductor L3, and a capacitor C33 connected to the second end of the inductor. The three form a π-type branch, and the polarized capacitor E9 is connected in parallel with a capacitor C32, and the capacitor C33 is connected in parallel with a polarized capacitor E10. The 4th pin of the isolated power supply module P3 is connected to the 8th and 6th pins of the optocoupler U11 after passing through an inductor L4, and the 3rd pin of the isolated power supply module P3 is connected to the 2nd pin of the electromagnetic relay REL1 and the 2nd pin of the electromagnetic relay REL2 after passing through an inductor L5. A polarized capacitor is connected to both sides of the inductor L4 and the inductor L5. Specifically, the positive electrode of the polarized capacitor E11 is connected to the first end of the inductor L4, and the negative electrode of the polarized capacitor E11 is connected to the first end of the inductor L5. The positive electrode of the polarized capacitor E12 is connected to the second end of the inductor L4, and the negative electrode of the polarized capacitor E12 is connected to the second end of the inductor L5. The 1st pin of the optocoupler U11 is connected to the +3.3V power supply through a resistor R53, the 3rd pin of the optocoupler U11 is connected to the +3.3V power supply through a resistor R54, the 2nd pin of the optocoupler U11 is connected to the CPU main control module (specifically connected to the 39th pin of the MM32F3273E7PV); the 4th pin of the optocoupler U11 is connected to the CPU main control module (specifically connected to the 38th pin of the MM32F3273E7PV); the 5th pin of the optocoupler U11 is connected to the 1st pin of the electromagnetic relay REL2, the 7th pin of the optocoupler U11 is connected to the 1st pin of the electromagnetic relay REL1, and the 6th and 8th pins of the optocoupler U11 are both connected to the second end of the inductor L4 of the isolated power supply module P3; the 2nd pins of the electromagnetic relay REL1 and the electromagnetic relay REL2 are both connected to the second end of the inductor L5 of the isolated power supply module P3; the 3rd pin of the electromagnetic relay REL1 is connected to the positive electrode of the programmable DC power supply charging port, and the 3rd pin of the electromagnetic relay REL2 is connected to the negative electrode of the programmable DC power supply charging port; the 4th pin of the electromagnetic relay REL1 is connected to the 2nd pin of the current transformer U2, and the 4th pin of the electromagnetic relay REL2 is connected to the 1st pin of the current transformer U2. The model of the isolated power supply module P3 is HLK-10D2424B, the model of the optocoupler U11 is TLP521, and the models of the electromagnetic relays REL1 and REL2 are both T90-24VDC-TL-A-40A.

[0007] Further, the battery discharge control circuit includes that the 1st pin of optocoupler U12 is connected to the +3.3V power supply through resistor R55, the 3rd pin of optocoupler U12 is connected to the +3.3V power supply through resistor R56, the 2nd pin of optocoupler U12 is connected to the CPU main control module (specifically connected to the 37th pin of MM32F3273E7PV); the 4th pin of optocoupler U12 is connected to the CPU main control module (specifically connected to the 36th pin of MM32F3273E7PV); the 5th pin of optocoupler U12 is connected to the 1st pin of electromagnetic relay REL4, the 7th pin of optocoupler U12 is connected to the 1st pin of electromagnetic relay REL3, and the 6th and 8th pins of optocoupler U12 are both connected to the second end of inductor L4 of isolation power supply module P3; the 2nd pins of electromagnetic relays REL3 and REL4 are both connected to the second end of inductor L5 of isolation power supply module P3; the 3rd pin of electromagnetic relay REL3 is connected to the positive electrode of the battery, the 3rd pin of electromagnetic relay REL4 is connected to the negative electrode of the battery; the 4th pin of electromagnetic relay REL3 is connected to the positive electrode of the programmable DC electronic load, and the 4th pin of electromagnetic relay REL4 is connected to the negative electrode of the programmable DC electronic load.

[0008] Further, the energy storage battery repair device further includes a battery internal resistance detection control circuit, the battery internal resistance detection control circuit is connected to the CPU main control module, and the battery internal resistance detection control circuit is respectively connected to the battery and the battery internal resistance tester.

[0009] Furthermore, the battery internal resistance detection control circuit includes that the 1st pin of optocoupler U13 is connected to the +3.3V power supply through resistor R57, the 3rd pin of optocoupler U13 is connected to the +3.3V power supply through resistor R58, the 2nd pin of optocoupler U13 is connected to the CPU main control module (specifically connected to the 35th pin of MM32F3273E7PV); the 4th pin of optocoupler U13 is connected to the CPU main control module (specifically connected to the 34th pin of MM32F3273E7PV); the 5th pin of optocoupler U13 is connected to the 1st pin of electromagnetic relay REL6, the 7th pin of optocoupler U13 is connected to the 1st pin of electromagnetic relay REL5, and the 6th and 8th pins of optocoupler U13 are both connected to the second end of inductor L4 of isolation power supply module P3;

[0010] The 2nd pins of electromagnetic relays REL5 and REL6 are both connected to the second end of inductor L5 of isolation power supply module P3; the 3rd pin of electromagnetic relay REL5 is connected to the positive electrode of the battery, the 3rd pin of electromagnetic relay REL6 is connected to the negative electrode of the battery; the 4th pin of electromagnetic relay REL5 is connected to the positive electrode of the test port of the battery internal resistance tester, and the 4th pin of electromagnetic relay REL6 is connected to the negative electrode of the test port of the battery internal resistance tester.

[0011] Further, the energy storage battery repair device further includes a keyboard and liquid crystal display circuit, a 485 communication circuit, a calendar clock circuit, and a data storage circuit, and the CPU main control module is respectively connected to the keyboard and liquid crystal display circuit, the 485 communication circuit, the calendar clock circuit, and the data storage circuit.

[0012] Beneficial effects of the present utility model compared with the prior art.

[0013] The present utility model realizes a repair device for energy storage batteries by building an integrated circuit with multiple electronic modules. This device significantly reduces the cost of the energy storage battery repair system, and has the advantages of small volume, high automation, simple use, etc., greatly reducing the complexity of the operation process and the technical requirements for operators. Description of the Drawings

[0014] The following further describes the present utility model in conjunction with the drawings and specific embodiments. The protection scope of the present utility model is not limited to the description of the following content.

[0015] Figure 1 It is the schematic diagram of the CPU main control module and its peripheral circuits.

[0016] Figure 2 It is the circuit schematic diagram of the battery charging control circuit.

[0017] Figure 3 It is the circuit schematic diagram of the battery discharge control circuit.

[0018] Figure 4 It is the circuit schematic diagram of the battery internal resistance detection control circuit.

[0019] Figure 5 It is the schematic diagram of the keyboard and liquid crystal display circuit.

[0020] Figure 6 It is the circuit schematic diagram of the 485 communication circuit.

[0021] Figure 7 It is the circuit schematic diagram of the calendar clock circuit.

[0022] Figure 8 It is the circuit schematic diagram of the data storage circuit. Specific Embodiments

[0023] To make the objectives, technical solutions, and beneficial effects of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0024] Such as Figure 1-8As shown in the figure, the energy storage battery repair device includes: a CPU main control module, a battery charging control circuit, a battery discharging control circuit, a battery internal resistance detection control circuit, a keyboard and liquid crystal display circuit, a 485 communication circuit, a calendar clock circuit, and a data storage circuit. The CPU main control module is respectively connected to the battery charging control circuit, the battery discharging control circuit, the battery internal resistance detection control circuit, the keyboard and liquid crystal display circuit, the 485 communication circuit, the calendar clock circuit, and the data storage circuit. The battery discharging control circuit is respectively connected to the battery and a programmable DC electronic load, and is used to control the on-off between the positive and negative electrodes of the battery and the positive and negative electrodes of the programmable DC electronic load port. The battery internal resistance detection control circuit is respectively connected to the battery and a battery internal resistance tester, and is used to control the on-off between the positive and negative electrodes of the battery and the positive and negative electrodes of the test port of the battery internal resistance tester. The battery charging control circuit is respectively connected to the battery and a programmable DC power supply, and is used to control the on-off between the positive and negative electrodes of the charging port of the programmable DC power supply and the positive and negative electrodes of the battery.

[0025] Preferably, the battery charging control circuit includes an isolated power supply module P3, an optocoupler U11, an electromagnetic relay REL1, and an electromagnetic relay REL2; the input end of the isolated power supply module P3 is connected to a 24V DC power supply through an isolation transformer LDM1, and a first π-type LC filter branch is provided between the input end of the isolated power supply module P3 and the isolation transformer LDM1; the first π-type LC filter branch includes an inductor L3, a polarized capacitor E9 connected to the first end of the inductor L3, and a capacitor C33 connected to the second end of the inductor. The three form a π-type branch, and the polarized capacitor E9 is connected in parallel with a capacitor C32, and the capacitor C33 is connected in parallel with a polarized capacitor E10; the 4th pin of the isolated power supply module P3 is connected to the 8th pin and the 6th pin of the optocoupler U11 respectively after passing through an inductor L4, and the 3rd pin of the isolated power supply module P3 is connected to the 2nd pin of the electromagnetic relay REL1 and the 2nd pin of the electromagnetic relay REL2 respectively after passing through an inductor L5; a polarized capacitor is connected to both sides of the inductor L4 and the inductor L5. Among them, the positive pole of the polarized capacitor E11 is connected to the first end of the inductor L4, and the negative pole of the polarized capacitor E11 is connected to the first end of the inductor L5; the positive pole of the polarized capacitor E12 is connected to the second end of the inductor L4, and the negative pole of the polarized capacitor E12 is connected to the second end of the inductor L5; the 1st pin of the optocoupler U11 is connected to the +3.3V power supply through a resistor R53, the 3rd pin of the optocoupler U11 is connected to the +3.3V power supply through a resistor R54, the 2nd pin of the optocoupler U11 is connected to the CPU main control module, (specifically connected to the 39th pin of the MM32F3273E7PV;), the 4th pin of the optocoupler U11 is connected to the CPU main control module, (specifically connected to the 38th pin of the MM32F3273E7PV;), the 5th pin of the optocoupler U11 is connected to the 1st pin of the electromagnetic relay REL2, the 7th pin of the optocoupler U11 is connected to the 1st pin of the electromagnetic relay REL1, and the 6th pin and the 8th pin of the optocoupler U11 are both connected to the second end of the inductor L4 of the isolated power supply module P3; the 2nd pin of the electromagnetic relay REL1 and the 2nd pin of the electromagnetic relay REL2 are both connected to the second end of the inductor L5 of the isolated power supply module P3; the 3rd pin of the electromagnetic relay REL1 is connected to the positive pole of the programmed DC power supply charging port, and the 3rd pin of the electromagnetic relay REL2 is connected to the negative pole of the programmed DC power supply charging port; the 4th pin of the electromagnetic relay REL1 is connected to the 2nd pin of the current transformer U2, and the 4th pin of the electromagnetic relay REL2 is connected to the 1st pin of the current transformer U2.

[0026] Specifically, the charging current needs to be detected by the current transformer U2. The 1st pin of the external device interface PE4 in the circuit diagram is connected to the positive pole of the programmed DC power supply charging port. The direction of this current in the circuit is that it first passes through the 3rd and 4th pins of REL1, and then the 4th pin of REL1 is connected to the 2nd pin of the current transformer U2, that is, the current flows into the current transformer U2 from the 2nd pin and flows out from the 1st pin of the current transformer U2. The 1st pin of the current transformer U2 is then connected to the 3rd pin of the external device interface PE4.

[0027] The working principle of the battery charging control circuit is as follows: Pins 1 and 3 of optocoupler U11 are pulled up to 3.3V through resistors R53 and R54 respectively, and pins 2 and 4 of optocoupler U11 are connected to pins 39 and 38 of MM32F3273E7PV respectively. When the system does not charge the battery, pins 39 and 38 of MM32F3273E7PV output high level, and the control terminal of optocoupler U11 is not conducting. When the system charges the battery, pins 39 and 38 of MM32F3273E7PV output low level, and the two control terminals of optocoupler U11 conduct, causing pins 8 and 7 of optocoupler U11 to conduct, and pins 6 and 5 of optocoupler U11 to conduct. Then, the internal coils of electromagnetic relays REL1 and REL2 are powered on, and the normally open contacts corresponding to electromagnetic relays REL1 and REL2 close. The positive pole of the charging port of the programmable DC power supply is connected to the positive pole of the battery through the closed contact of REL1 and the primary side of current transformer U2 in the circuit. The negative pole of the charging port of the programmable DC power supply is connected to the negative pole of the battery through the closed contact of REL2.

[0028] In the embodiment, the isolation power module P3 is of model HLK-10D2424B, the optocoupler U11 is of model TLP521, and the models of electromagnetic relays REL1 and REL2 are both T90-24VDC-TL-A-40A.

[0029] Preferably, the battery discharge control circuit includes that pin 1 of optocoupler U12 is connected to the +3.3V power supply through resistor R55, pin 3 of optocoupler U12 is connected to the +3.3V power supply through resistor R56, pin 2 of optocoupler U12 is connected to the CPU main control module (specifically connected to pin 37 of MM32F3273E7PV); pin 4 of optocoupler U12 is connected to the CPU main control module (specifically connected to pin 36 of MM32F3273E7PV); pin 5 of optocoupler U12 is connected to pin 1 of electromagnetic relay REL4, pin 7 of optocoupler U12 is connected to pin 1 of electromagnetic relay REL3, and pins 6 and 8 of optocoupler U12 are both connected to the second end of inductor L4 of isolation power module P3; pin 2 of electromagnetic relay REL3 and pin 2 of electromagnetic relay REL4 are both connected to the second end of inductor L5 of isolation power module P3; pin 3 of electromagnetic relay REL3 is connected to the positive pole of the battery, and pin 3 of electromagnetic relay REL4 is connected to the negative pole of the battery; pin 4 of electromagnetic relay REL3 is connected to the positive pole of the programmable DC electronic load, and pin 4 of electromagnetic relay REL4 is connected to the negative pole of the programmable DC electronic load.

[0030] The working principle of the battery discharge control circuit is as follows: The 1st and 3rd pins of optocoupler U12 are pulled up to 3.3V through resistors R55 and R56 respectively, and the 2nd and 4th pins of optocoupler U12 are connected to the 37th and 36th pins of MM32F3273E7PV respectively. When the battery does not discharge the programmable DC electronic load, the 37th and 36th pins of MM32F3273E7PV output high level, and the control terminal of optocoupler U12 is not conducting. When the battery discharges the programmable DC electronic load, the 37th and 36th pins of MM32F3273E7PV output low level, and the two control terminals of optocoupler U12 conduct, making the 8th and 7th pins of optocoupler U12 conduct, and making the 6th and 5th pins of optocoupler U12 conduct. Then, the internal coils of electromagnetic relays REL3 and REL4 are powered on, and the normally open contacts corresponding to electromagnetic relays REL3 and REL4 close. The positive pole of the battery is connected to the positive pole of the programmable DC electronic load port through the closed contact of REL3, and the negative pole of the battery is connected to the negative pole of the programmable DC electronic load port through the closed contact of REL4.

[0031] Preferably, for the battery internal resistance detection and control circuit, the 1st pin of optocoupler U13 is connected to the +3.3V power supply through resistor R57, the 3rd pin of optocoupler U13 is connected to the +3.3V power supply through resistor R58, the 2nd pin of optocoupler U13 is connected to the CPU main control module (specifically connected to the 35th pin of MM32F3273E7PV); the 4th pin of optocoupler U13 is connected to the CPU main control module (specifically connected to the 34th pin of MM32F3273E7PV); the 5th pin of optocoupler U13 is connected to the 1st pin of electromagnetic relay REL6, the 7th pin of optocoupler U13 is connected to the 1st pin of electromagnetic relay REL5, and the 6th and 8th pins of optocoupler U13 are both connected to the second end of inductor L4 of isolation power supply module P3;

[0032] The 2nd pin of electromagnetic relay REL5 and the 2nd pin of electromagnetic relay REL6 are both connected to the second end of inductor L5 of isolation power supply module P3; the 3rd pin of electromagnetic relay REL5 is connected to the positive pole of the battery, the 3rd pin of electromagnetic relay REL6 is connected to the negative pole of the battery; the 4th pin of electromagnetic relay REL5 is connected to the positive pole of the test port of the battery internal resistance tester, and the 4th pin of electromagnetic relay REL6 is connected to the negative pole of the test port of the battery internal resistance tester.

[0033] The working principle of the battery internal resistance detection control circuit is as follows: The 1st and 3rd pins of optocoupler U13 are pulled up to 3.3V through resistors R57 and R58 respectively, and the 2nd and 4th pins of optocoupler U13 are connected to the 35th and 34th pins of MM32F3273E7PV respectively. When the battery internal resistance tester does not perform internal resistance detection on the battery, the 35th and 34th pins of MM32F3273E7PV output high level, and the control end of optocoupler U13 is not conducting. When the battery internal resistance tester performs internal resistance detection on the battery, the 35th and 34th pins of MM32F3273E7PV output low level, and the two control ends of optocoupler U13 conduct, causing the 8th and 7th pins of optocoupler U13 to conduct, and the 6th and 5th pins of optocoupler U13 to conduct. Then, the internal coils of electromagnetic relays REL5 and REL6 are powered on, and the normally open contacts corresponding to electromagnetic relays REL5 and REL6 close. The positive electrode of the battery is connected to the positive electrode of the test port of the battery internal resistance tester through the closed contact of REL5, and the negative electrode of the battery is connected to the negative electrode of the test port of the battery internal resistance tester through the closed contact of REL6.

[0034] In the detection and repair process of the present utility model, the battery needs to work in the charging mode, discharging mode, and internal resistance detection mode respectively. In these modes, the positive and negative electrodes of the battery need to be separately connected to the corresponding ports of the programmable DC power supply, programmable DC electronic load, and battery internal resistance tester, and the on-off of the positive and negative electrodes of the battery with these peripheral device ports needs to be controlled by the battery charging control circuit, battery discharging control circuit, and battery internal resistance detection control circuit. Among them, the battery charging control circuit is used to control the on-off between the charging port of the programmable DC power supply and the positive and negative electrodes of the battery, the battery discharging control circuit is used to control the on-off between the port of the programmable DC electronic load and the positive and negative electrodes of the battery, and the battery internal resistance detection control circuit is used to control the on-off between the test port of the battery internal resistance tester and the positive and negative electrodes of the battery.

[0035] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that; it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; therefore, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope defined by the claims of the present utility model.

Claims

1. Energy storage battery repair device, characterized in that: Including CPU main control module, battery charging control circuit, battery discharging control circuit; The CPU main control module is connected to the battery charging control circuit and the battery discharging control circuit respectively; The battery discharge control circuit is connected to the battery and the programmable DC electronic load respectively, and is used to control the connection and disconnection between the positive and negative electrodes of the battery and the positive and negative electrodes of the programmable DC electronic load port; The battery charging control circuit is connected to the battery and the programmable DC power supply respectively, and is used to control the connection and disconnection between the positive and negative electrodes of the programmable DC power supply charging port and the positive and negative electrodes of the battery.

2. The energy storage battery repair device according to claim 1, characterized in that: The battery charging control circuit includes an isolation power module P3, an optical coupler U11, an electromagnetic relay REL1, and an electromagnetic relay REL2; the input end of the isolation power module P3 is connected to a 24V DC power supply through an isolation transformer LDM1, and a first π-type LC filter branch is provided between the input end of the isolation power module P3 and the isolation transformer LDM1; the first π-type LC filter branch includes an inductor L3, a polarized capacitor E9 connected to the first end of the inductor L3, and a capacitor C33 connected to the second end of the inductor, the three forming a π-type branch, and the polarized capacitor E9 is connected to the first end of the inductor L3. Capacitor E9 is connected in parallel with capacitor C32, and capacitor C33 is connected in parallel with polarized capacitor E10; pin 4 of isolated power module P3 is connected to pin 8 and pin 6 of optocoupler U11 respectively through inductor L4, and pin 3 of isolated power module P3 is connected to pin 2 of electromagnetic relay REL1 and pin 2 of electromagnetic relay REL2 respectively through inductor L5; a polarized capacitor is connected to both sides of inductor L4 and inductor L5, wherein the positive electrode of polarized capacitor E11 is connected to the first end of inductor L4, and the negative electrode of polarized capacitor E11 is connected to the first end of inductor L5; polarized capacitor E11 is connected to the first end of inductor L4, and the negative electrode of polarized capacitor E11 is connected to the first end of inductor L5; The positive electrode of the polar capacitor E12 is connected to the second end of the inductor L4, and the negative electrode of the polar capacitor E12 is connected to the second end of the inductor L5; the pin 1 of the optocoupler U11 is connected to the +3.3V power supply through the resistor R53, the pin 3 of the optocoupler U11 is connected to the +3.3V power supply through the resistor R54, the pin 2 of the optocoupler U11 is connected to the CPU main control module, the pin 4 of the optocoupler U11 is connected to the CPU main control module, the pin 5 of the optocoupler U11 is connected to the pin 1 of the electromagnetic relay REL2, the pin 7 of the optocoupler U11 is connected to the pin 1 of the electromagnetic relay REL1, and the optocoupler U11 Pin 6 and pin 8 are both connected to the second end of the inductor L4 of the isolation power module P3; pin 2 of the electromagnetic relay REL1 and pin 2 of the electromagnetic relay REL2 are both connected to the second end of the inductor L5 of the isolation power module P3; pin 3 of the electromagnetic relay REL1 is connected to the positive pole of the programmable DC power supply charging port, and pin 3 of the electromagnetic relay REL2 is connected to the negative pole of the programmable DC power supply charging port; pin 4 of the electromagnetic relay REL1 is connected to pin 2 of the current transformer U2, and pin 4 of the electromagnetic relay REL2 is connected to pin 1 of the current transformer U2.

3. The energy storage battery repair device according to claim 2, characterized in that: The battery discharge control circuit includes: pin 1 of the optocoupler U12 is connected to a +3.3V power supply through a resistor R55, pin 3 of the optocoupler U12 is connected to a +3.3V power supply through a resistor R56, pin 2 of the optocoupler U12 is connected to a CPU main control module, pin 4 of the optocoupler U12 is connected to the CPU main control module, pin 5 of the optocoupler U12 is connected to pin 1 of an electromagnetic relay REL4, pin 7 of the optocoupler U12 is connected to pin 1 of an electromagnetic relay REL3, pins 6 and 8 of the optocoupler U12 are both connected to the second end of the inductor L4 of the isolation power module P3; pin 2 of the electromagnetic relay REL3 and pin 2 of the electromagnetic relay REL4 are both connected to the second end of the inductor L5 of the isolation power module P3; pin 3 of the electromagnetic relay REL3 is connected to the positive pole of the battery, and pin 3 of the electromagnetic relay REL4 is connected to the negative pole of the battery; pin 4 of the electromagnetic relay REL3 is connected to the positive pole of the programmable DC electronic load, and pin 4 of the electromagnetic relay REL4 is connected to the negative pole of the programmable DC electronic load.

4. The energy storage battery repair device according to claim 3 is characterized in that: The energy storage battery repair device also includes a battery internal resistance detection control circuit, which is connected to the CPU main control module, and the battery internal resistance detection control circuit is respectively connected to the battery and the battery internal resistance tester.

5. The energy storage battery repair device according to claim 4 is characterized in that: The battery internal resistance detection control circuit includes: Pin 1 of the optocoupler U13 is connected to a +3.3V power supply through a resistor R57, Pin 3 of the optocoupler U13 is connected to a +3.3V power supply through a resistor R58, Pin 2 of the optocoupler U13 is connected to a CPU main control module, Pin 4 of the optocoupler U13 is connected to a CPU main control module, Pin 5 of the optocoupler U13 is connected to Pin 1 of an electromagnetic relay REL6, Pin 7 of the optocoupler U13 is connected to Pin 1 of an electromagnetic relay REL5, and Pins 6 and 8 of the optocoupler U13 are both connected to an isolated power supply. The second end of the inductor L4 of the module P3 is connected; the 2nd pin of the electromagnetic relay REL5 and the 2nd pin of the electromagnetic relay REL6 are both connected to the second end of the inductor L5 of the isolated power supply module P3; the 3rd pin of the electromagnetic relay REL5 is connected to the positive pole of the battery, and the 3rd pin of the electromagnetic relay REL6 is connected to the negative pole of the battery; the 4th pin of the electromagnetic relay REL5 is connected to the positive pole of the test port of the battery internal resistance tester, and the 4th pin of the electromagnetic relay REL6 is connected to the negative pole of the test port of the battery internal resistance tester.

6. The energy storage battery repair device according to claim 1, characterized in that: The energy storage battery repair device also includes a keyboard and liquid crystal display circuit, a 485 communication circuit, a calendar clock circuit, and a data storage circuit. The CPU main control module is respectively connected to the keyboard and liquid crystal display circuit, the 485 communication circuit, the calendar clock circuit, and the data storage circuit.

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