Lithium battery pulse repairing system

Abstract

The utility model discloses a lithium battery pulse repair system, which comprises a pulse charging circuit, and the pulse charging circuit comprises a power supply circuit, a pulse detection circuit, an operational amplifier circuit and an optocoupler circuit. The power supply circuit reduces the voltage of commercial power and outputs voltage for system operation. The pulse detection circuit is connected with the power supply circuit and is provided with a battery partial voltage detection port, a current output control port, a turn-off output port, an LED driving port, a fan driving port and a current detection port; the operational amplifier circuit is connected with the detection circuit; and the optocoupler circuit is connected with the power supply circuit and the operational amplifier circuit. According to the utility model, the pulse charging technology is applied to the lithium ion battery. The short idle time and the discharge pulse are inserted in the charging process, so that the concentration polarization of the battery liquid can be effectively eliminated, and the power and the transmission rate are increased. Therefore, the utilization rate of the active material is improved, the charging process is accelerated, and the service life of the lithium battery is prolonged.

Description

Technical Field

[0001] This utility model relates to lithium batteries, and more specifically to a lithium battery pulse repair system. Background Technology

[0002] With the rapid development of technology, lithium batteries are increasingly widely used in various fields, from portable mobile phones and other electronic devices. However, lithium batteries experience performance degradation during use, which has spurred the research and development of lithium battery pulse repair technology.

[0003] Traditional lithium-ion battery charging technology involves constant current and constant voltage charging. The lithium battery is first charged with a constant current until the terminal voltage rises to the charging termination voltage (4.1 volts or 4.2 volts), then the battery enters the constant voltage charging phase. Charging is complete when the current drops to a preset low level. This constant voltage charging phase significantly extends the charging time. As is well known, the diffusion rate of lithium ions between electrodes determines the charging speed of a lithium-ion battery. Slow lithium-ion diffusion inevitably leads to lithium-ion concentration polarization, especially during high-current charging, causing the terminal voltage to rise rapidly to the charging termination voltage.

[0004] Therefore, it is necessary to develop a lithium battery pulse repair system to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a lithium battery pulse repair system.

[0006] This utility model is achieved through the following solution: A lithium battery pulse repair system of this utility model includes a pulse charging circuit, which comprises:

[0007] The power supply circuit steps down the mains power to provide the voltage for system operation;

[0008] The pulse detection circuit, connected to the power supply circuit, has a battery voltage divider detection port, a current output control port, a shutdown output port, an LED drive port, a fan drive port, and a current detection port.

[0009] The operational amplifier circuit is connected to the detection circuit;

[0010] An optocoupler circuit is connected to the power supply circuit and the operational amplifier circuit.

[0011] Furthermore, the power supply circuit includes:

[0012] Transformer T1 has two primary coils at its primary end and a first primary coil and a second secondary coil at its secondary end, wherein the second end of the first primary coil is grounded.

[0013] A Zener diode F10P40 with its negative terminal connected to the ground plane, and the positive terminal of Zener diode F10P40 connected to the first terminal of the primary coil.

[0014] Capacitor C3, with its first terminal connected to the first terminal of the primary coil;

[0015] Resistor R4, the first end of which is connected to the second end of capacitor C3, and the second end of resistor R4 is connected to the negative terminal of Zener diode F10P40;

[0016] The diode SR560 has its anode connected to the second terminal of resistor R4, and its cathode outputting V+. A 'o' is set at the node between the anode of diode SR560 and the second terminal of resistor R4. + contact;

[0017] A polarized capacitor C7 is provided, with its positive terminal connected to the second end of the resistor R4 and its negative terminal connected to the ground terminal of the primary coil.

[0018] Resistor R5, the first end of which is connected to the ground terminal of the first primary coil;

[0019] Inductor L1 has a first coil and a second coil. The first end of the first coil is connected to the negative terminal of the diode SR560, and the second end of the first coil outputs a B+ circuit. The first end of the second coil is connected to the second end of the resistor R5, and the second end of the second coil outputs a B- circuit.

[0020] Diode D8, the positive terminal of which is connected to the first terminal of the secondary winding, the second terminal of which is grounded, and the negative terminal of which outputs VCC voltage;

[0021] A polarized capacitor C14 is provided, the positive terminal of which is connected to the negative terminal of the diode D8, and the negative terminal of which is connected to the ground terminal of the secondary coil.

[0022] Furthermore, when the lithium battery pulse repair system is in standby mode, the B+ circuit outputs a voltage of 42V, and when the lithium battery pulse repair system is in the off state, the B+ circuit outputs a voltage of 38V.

[0023] Furthermore, the pulse detection circuit includes a microcontroller U3, where pin 1 is a spare pin and pin 2 is the battery voltage divider detection port.

[0024] The pulse detection circuit includes a series resistor consisting of resistors R29, R30, R31, R32 and R33 connected in sequence. One end of the series resistor is connected to the B+ circuit, and the other end is connected to pin 2 of the microcontroller U3.

[0025] The resistor R29 is connected in parallel with resistors R27 and R28;

[0026] A capacitor C8 is connected to the circuit node between resistors R32 and R33. The other end of capacitor C8 is grounded. Resistors R34 and R35 are connected in parallel with capacitor C8.

[0027] The microcontroller U3 is also connected to a capacitor C71 at pin 2, and the other end of the capacitor C71 is connected to the ground terminal of the capacitor C8.

[0028] Pin 3 of the microcontroller U3 is a spare pin;

[0029] A capacitor C5 is connected between pin 4 and pin 5 of the microcontroller U3. A resistor R22 is also connected to pin 4 of the microcontroller U3. The other end of the resistor R22 is connected to a 5.1V voltage. Pin 5 of the microcontroller U3 is grounded.

[0030] Pin 6 of the microcontroller U3 is a current output control port, which is connected to the first end of resistor R161. The other two ends of resistor R161 are connected to the operational amplifier circuit.

[0031] Pin 7 of the microcontroller U3 is the shutdown output control port, which is connected to a resistor R16. The other end of the resistor R16 is connected to the optocoupler circuit.

[0032] The 8th pin of the microcontroller U3 is a current detection port, which is connected to the first end of resistor R23, the negative terminal of Zener diode ZD1, the first end of capacitor C6, and the negative terminal of diode D2. The second end of R23, the positive terminal of Zener diode ZD1, and the second end of capacitor C6 are interconnected. The positive terminal of diode D2 is connected to the first end of resistor R231, and the second end of resistor R231 is connected to the operational amplifier circuit.

[0033] Pin 9 of the microcontroller U3 is connected to the first end of resistor R8. The second end of resistor R8 is connected to the base of NPN transistor Q3. The collector of NPN transistor Q3 is connected to the FAN circuit. The emitter of NPN transistor Q3 is grounded. The FAN circuit is connected to the fan drive circuit.

[0034] The microcontroller U3 outputs 5V voltage at pin 10;

[0035] Pin 11 of the microcontroller U3 is a spare pin;

[0036] Pin 12 of the microcontroller U3 is connected to the first end of resistor R11, the second end of resistor R11 is connected to the positive terminal of LED1, and the negative terminal of LED1 is grounded.

[0037] Pin 13 of the microcontroller U3 is connected to the first end of resistor R111, and the second end of resistor R111 is connected to the positive terminal of green LED2.

[0038] Pin 14 of the microcontroller U3 is connected to the first end of resistor R12, and the second end of resistor R12 is connected to the positive terminal of red LED3. The negative terminals of red LED3 and green LED2 are interconnected and grounded.

[0039] Furthermore, the operational amplifier circuit includes a 358 operational amplifier U2;

[0040] Pin 1 of the 358 op-amp U2 is connected to the second terminal of resistor R231 and the first terminal of resistor R211;

[0041] Pin 2 of the 358 op-amp U2 is connected to the first end of resistor R101 and the first end of resistor R102, respectively. The second end of resistor R101 is connected to a 5V voltage, and the second end of resistor R102 is grounded.

[0042] Pin 3 of the 358 op-amp U2 is connected to the second end of resistor R211 and the first end of resistor R103, respectively. The second end of resistor R103 is connected to the second end of resistor R5.

[0043] Pin 4 of the 358 op-amp U2 is grounded;

[0044] Pin 5 of the 358 op-amp U2 is connected to the first end of resistor R21, the first end of resistor R20, the first end of resistor R19 and the second end of resistor R161 respectively. The second ends of resistor R21 and resistor R20 are interconnected and grounded. The second end of resistor R19 is connected to a 5V voltage.

[0045] Pin 6 of the 358 op-amp U2 is connected to the first end of capacitor C3 and the first end of resistor R18, respectively. The second end of capacitor C3 is connected to pin 7 of the 358 op-amp U2, and the second end of resistor R18 is connected to the second end of resistor R103.

[0046] Pin 7 of the 358 op-amp U2 is also connected to the first end of capacitor C4, and the second end of capacitor C4 is grounded.

[0047] Pin 8 of the 358 op-amp U2 is connected to the VCC circuit.

[0048] Furthermore, the optocoupler circuit includes an optocoupler IC1. The positive terminal of the optocoupler IC1 is connected to the first terminal of resistor R3, and the negative terminal of the optocoupler IC1 is connected to the first terminal of resistor R2, the negative terminal of voltage regulator chip U1, the first terminal of resistor R1, and the first terminal of resistor R17. The second terminal of resistor R17 is connected to the positive terminal of diode D1, and the negative terminal of diode D1 is connected to pin 7 of the 358 operational amplifier U2.

[0049] The second terminals of resistor R3 and resistor R2 are interconnected and connected to the VCC circuit. The positive terminal of the voltage regulator chip U1 is grounded. REF The pins are respectively connected to the first terminal of capacitor C1, the first terminal of resistor R15, the first terminal of adjustable resistor R104, the first terminal of resistor R13, and the second terminal of resistor R16. The second terminal of capacitor C1 is connected to the second terminal of resistor R1. The second terminal of resistor R15 is respectively connected to the first terminal of resistor R151, the second terminal of adjustable resistor R104, and the adjustable pin of adjustable resistor R104. The second terminal of resistor R151 is grounded.

[0050] The second end of resistor R13 is connected to the first end of resistor R14, the second end of resistor R14 is connected to the first end of resistor R24, the second end of resistor R24 ​​is connected to the first end of resistor R25, and the second end of resistor R25 is connected to the o + The contact point is further connected in parallel with resistor R26, which is also resistor R25.

[0051] Compared with the prior art, the beneficial effects of this utility model are:

[0052] 1. This invention applies pulse charging technology to lithium-ion batteries. By inserting brief idle times and discharge pulses during the charging process, it effectively eliminates battery electrolyte concentration polarization, increasing power and transmission rate. Therefore, it improves the utilization rate of active materials, accelerates the charging process, and extends the lifespan of the lithium battery.

[0053] 2. This invention significantly improves the capacity and charge / discharge performance of some aged lithium batteries, restoring them to near their initial levels.

[0054] 3. This utility model extends the lifespan of lithium batteries and reduces the frequency of battery replacements for users. Attached Figure Description

[0055] Figure 1 This is the power supply circuit diagram of this utility model.

[0056] Figures 2-3 The A-end is connected to form the overall diagram of the pulse detection circuit of this utility model.

[0057] Figure 4 This is the circuit diagram of the operational amplifier of this utility model.

[0058] Figure 5 This is the circuit diagram of the optocoupler of this utility model. Detailed Implementation

[0059] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0060] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0061] Example 1: The specific structure of this utility model is as follows:

[0062] Please refer to the appendix. Figure 1-5 This invention discloses a lithium battery pulse repair system, which is deeply integrated with a battery management system (BMS) to achieve integrated real-time monitoring and repair. The lithium battery pulse repair system includes a pulse charging circuit, which comprises a power supply circuit, a pulse detection circuit, an operational amplifier circuit, and an optocoupler circuit.

[0063] The power supply circuit steps down the AC power to supply the operating voltage of the system. The output voltage of the power supply circuit is 42V when in standby mode and 38V when the output is turned off.

[0064] The pulse detection circuit is connected to the power supply circuit and has a battery voltage divider detection port, a current output control port, a shutdown output port, an LED drive port, a fan drive port, and a current detection port, such as... Figure 3 Point B is the battery voltage divider detection port;

[0065] The operational amplifier circuit is connected to the detection circuit;

[0066] The optocoupler circuit is connected to the power supply circuit and the operational amplifier circuit.

[0067] A preferred embodiment of this technical solution: The power supply circuit includes:

[0068] Transformer T1 has two primary coils at its primary end and a first primary coil and a second secondary coil at its secondary end, wherein the second end of the first primary coil is grounded.

[0069] A Zener diode F10P40 with its negative terminal connected to the ground plane, and the positive terminal of Zener diode F10P40 connected to the first terminal of the primary coil.

[0070] Capacitor C3, with its first terminal connected to the first terminal of the primary coil;

[0071] Resistor R4, the first end of which is connected to the second end of capacitor C3, and the second end of resistor R4 is connected to the negative terminal of Zener diode F10P40;

[0072] The diode SR560 has its anode connected to the second terminal of resistor R4, and its cathode outputting V+. A 'o' is set at the node between the anode of diode SR560 and the second terminal of resistor R4. + contact;

[0073] A polarized capacitor C7 is provided, with its positive terminal connected to the second end of the resistor R4 and its negative terminal connected to the ground terminal of the primary coil.

[0074] Resistor R5, the first end of which is connected to the ground terminal of the first primary coil;

[0075] Inductor L1 has a first coil and a second coil. The first end of the first coil is connected to the negative terminal of the diode SR560, and the second end of the first coil outputs a B+ circuit. The first end of the second coil is connected to the second end of the resistor R5, and the second end of the second coil outputs a B- circuit.

[0076] Diode D8, the positive terminal of which is connected to the first terminal of the secondary winding, the second terminal of which is grounded, and the negative terminal of which outputs VCC voltage;

[0077] A polarized capacitor C14 is provided, the positive terminal of which is connected to the negative terminal of the diode D8, and the negative terminal of which is connected to the ground terminal of the secondary coil.

[0078] In a preferred embodiment, when the lithium battery pulse repair system is in standby mode, the B+ circuit outputs a voltage of 42V; when the lithium battery pulse repair system is in the off state, the B+ circuit outputs a voltage of 38V.

[0079] A preferred embodiment of this technical solution: the pulse detection circuit is equipped with a microcontroller U3, pin 1 of which is a spare pin, and pin 2 is the battery voltage divider detection port; the microcontroller U3 is model EM78P259;

[0080] The pulse detection circuit includes a series resistor consisting of resistors R29, R30, R31, R32 and R33 connected in sequence. One end of the series resistor is connected to the B+ circuit, and the other end is connected to pin 2 of the microcontroller U3.

[0081] The resistor R29 is connected in parallel with resistors R27 and R28;

[0082] A capacitor C8 is connected to the circuit node between resistors R32 and R33. The other end of capacitor C8 is grounded. Resistors R34 and R35 are connected in parallel with capacitor C8.

[0083] The microcontroller U3 is also connected to a capacitor C71 at pin 2, and the other end of the capacitor C71 is connected to the ground terminal of the capacitor C8.

[0084] Pin 3 of the microcontroller U3 is a spare pin;

[0085] A capacitor C5 is connected between pin 4 and pin 5 of the microcontroller U3. A resistor R22 is also connected to pin 4 of the microcontroller U3. The other end of the resistor R22 is connected to a 5.1V voltage. Pin 5 of the microcontroller U3 is grounded.

[0086] Pin 6 of the microcontroller U3 is a current output control port, which is connected to the first end of resistor R161. The other two ends of resistor R161 are connected to the operational amplifier circuit.

[0087] Pin 7 of the microcontroller U3 is the shutdown output control port, which is connected to a resistor R16. The other end of the resistor R16 is connected to the optocoupler circuit.

[0088] The 8th pin of the microcontroller U3 is a current detection port, which is connected to the first end of resistor R23, the negative terminal of Zener diode ZD1, the first end of capacitor C6, and the negative terminal of diode D2. The second end of R23, the positive terminal of Zener diode ZD1, and the second end of capacitor C6 are interconnected. The positive terminal of diode D2 is connected to the first end of resistor R231, and the second end of resistor R231 is connected to the operational amplifier circuit.

[0089] Pin 9 of the microcontroller U3 is connected to the first end of resistor R8. The second end of resistor R8 is connected to the base of NPN transistor Q3. The collector of NPN transistor Q3 is connected to the FAN circuit. The emitter of NPN transistor Q3 is grounded. The FAN circuit is connected to the fan drive circuit.

[0090] The microcontroller U3 outputs 5V voltage at pin 10;

[0091] Pin 11 of the microcontroller U3 is a spare pin;

[0092] Pin 12 of the microcontroller U3 is connected to the first end of resistor R11, the second end of resistor R11 is connected to the positive terminal of LED1, and the negative terminal of LED1 is grounded.

[0093] Pin 13 of the microcontroller U3 is connected to the first end of resistor R111, and the second end of resistor R111 is connected to the positive terminal of green LED2.

[0094] Pin 14 of the microcontroller U3 is connected to the first end of resistor R12, and the second end of resistor R12 is connected to the positive terminal of red LED3. The negative terminals of red LED3 and green LED2 are interconnected and grounded.

[0095] A preferred embodiment of the present invention includes a 358 operational amplifier U2 in the operational amplifier circuit.

[0096] Pin 1 of the 358 op-amp U2 is connected to the second terminal of resistor R231 and the first terminal of resistor R211;

[0097] Pin 2 of the 358 op-amp U2 is connected to the first end of resistor R101 and the first end of resistor R102, respectively. The second end of resistor R101 is connected to a 5V voltage, and the second end of resistor R102 is grounded.

[0098] Pin 3 of the 358 op-amp U2 is connected to the second end of resistor R211 and the first end of resistor R103, respectively. The second end of resistor R103 is connected to the second end of resistor R5.

[0099] Pin 4 of the 358 op-amp U2 is grounded;

[0100] Pin 5 of the 358 op-amp U2 is connected to the first end of resistor R21, the first end of resistor R20, the first end of resistor R19 and the second end of resistor R161 respectively. The second ends of resistor R21 and resistor R20 are interconnected and grounded. The second end of resistor R19 is connected to a 5V voltage.

[0101] Pin 6 of the 358 op-amp U2 is connected to the first end of capacitor C3 and the first end of resistor R18, respectively. The second end of capacitor C3 is connected to pin 7 of the 358 op-amp U2, and the second end of resistor R18 is connected to the second end of resistor R103.

[0102] Pin 7 of the 358 op-amp U2 is also connected to the first end of capacitor C4, and the second end of capacitor C4 is grounded.

[0103] Pin 8 of the 358 op-amp U2 is connected to the VCC circuit.

[0104] A preferred embodiment of the present invention is as follows: the optocoupler circuit includes an optocoupler IC1. The positive terminal of the optocoupler IC1 is connected to the first terminal of resistor R3, and the negative terminal of the optocoupler IC1 is connected to the first terminal of resistor R2, the negative terminal of voltage regulator chip U1, the first terminal of resistor R1, and the first terminal of resistor R17. The second terminal of resistor R17 is connected to the positive terminal of diode D1, and the negative terminal of diode D1 is connected to pin 7 of the 358 operational amplifier U2.

[0105] The second terminals of resistor R3 and resistor R2 are interconnected and connected to the VCC circuit. The positive terminal of the voltage regulator chip U1 is grounded. REF The pins are respectively connected to the first terminal of capacitor C1, the first terminal of resistor R15, the first terminal of adjustable resistor R104, the first terminal of resistor R13, and the second terminal of resistor R16. The second terminal of capacitor C1 is connected to the second terminal of resistor R1. The second terminal of resistor R15 is respectively connected to the first terminal of resistor R151, the second terminal of adjustable resistor R104, and the adjustable pin of adjustable resistor R104. The second terminal of resistor R151 is grounded.

[0106] The second end of resistor R13 is connected to the first end of resistor R14, the second end of resistor R14 is connected to the first end of resistor R24, the second end of resistor R24 ​​is connected to the first end of resistor R25, and the second end of resistor R25 is connected to the o + The contact point is further connected in parallel with resistor R26, which is also resistor R25.

[0107] Example 2:

[0108] The following is a battery repair method for a lithium battery pulse repair system provided by this utility model according to the circuit of Embodiment 1. The battery repair method includes the following steps:

[0109] Step 1: After the lithium battery pulse repair system is powered on, the green lights of LED1 and LED2 flash twice and then turn on. The fan does not turn on, and the system enters standby mode.

[0110] The green light of LED1 and LED2 flashes twice at a frequency of 0.8s on, 0.2s off, 0.8s on, and 0.2s off, with a flashing frequency period of 2s. During the 2s period, pin 7 of the 358 op-amp U2 is set as input. After 2s, it enters standby mode, pin 7 of the 358 op-amp U2 is set to low, and pin 6 of the 358 op-amp U2 is set as input.

[0111] Step 2: After connecting the battery, charge with a high current for 2 seconds, then switch to low current charging. The fan will turn on. When the battery voltage is less than 38V, LED1 will turn off, and the green light of LED2 will flash for 0.4 seconds and then stop for 0.2 seconds.

[0112] When the battery voltage is >38V, LED1 lights up, and the green light of LED2 flashes for 0.4 seconds and stops for 0.2 seconds; the low-current charging time is 10 minutes.

[0113] When the battery is disconnected during low-current charging, it automatically enters standby mode.

[0114] Step 3: After charging for 10 minutes, switch to high-current charging. The fan will turn on. When the battery voltage is <38V, LED1 will turn off, and the green light of LED2 will flash for 0.4 seconds and then stop for 0.2 seconds. When the battery voltage is >38V, LED1 will turn on, and the green light of LED2 will flash for 0.4 seconds and then stop for 0.2 seconds.

[0115] If the battery is disconnected during high-current charging, it should automatically enter standby mode.

[0116] Step 4: When pin 2 of microcontroller U3 monitors the battery voltage to 41V, charging is stopped and waited for 10 minutes. During these 10 minutes, pin 7 of microcontroller U3 shuts off the output, the fan spins, LED1 lights up, and the green light of LED2 flashes for 0.4 seconds and stops for 0.2 seconds. After 10 minutes, high-current charging resumes.

[0117] If the battery is disconnected within 10 minutes or after 10 minutes, it will automatically enter standby mode;

[0118] Step 5: When the charging current is less than 200mA, the green lights of LED1 and LED2 will light up, the fan will stop, and pin 7 of the microcontroller U3 will turn off its output.

[0119] In the output off mode, disconnecting the battery will automatically enter standby mode;

[0120] Step 6: The charging timer is set for 9 hours from the start of charging. After 9 hours of charging, the green lights of LED1 and LED2 will turn on, the fan will stop, and the output will be turned off.

[0121] When the battery is disconnected during charging and the device returns to standby mode, the timer will restart after 9 hours for the next charge.

[0122] During the charging process in any of steps one through six, if the battery is disconnected, it will automatically enter standby mode.

[0123] Applying pulse charging technology to lithium-ion batteries involves inserting brief idle times and discharge pulses during the charging process. This effectively eliminates concentration polarization, increases power and transmission rate, and thus improves the utilization rate of active materials, accelerates the charging process, and extends the cycle life of lithium-ion batteries.

[0124] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A lithium battery pulse repair system, characterized in that, Includes a pulse charging circuit, which includes: The power supply circuit steps down the mains power to provide the voltage for system operation; The pulse detection circuit, connected to the power supply circuit, has a battery voltage divider detection port, a current output control port, a shutdown output port, an LED drive port, a fan drive port, and a current detection port. The operational amplifier circuit is connected to the detection circuit; An optocoupler circuit is connected to the power supply circuit and the operational amplifier circuit.

2. The lithium battery pulse repair system according to claim 1, characterized in that, The power supply circuit includes: Transformer T1 has two primary coils at its primary end and a first primary coil and a second secondary coil at its secondary end, wherein the second end of the first primary coil is grounded. A Zener diode F10P40 with its negative terminal connected to the ground plane, and the positive terminal of Zener diode F10P40 connected to the first terminal of the primary coil. Capacitor C3, with its first terminal connected to the first terminal of the primary coil; Resistor R4, the first end of which is connected to the second end of capacitor C3, and the second end of resistor R4 is connected to the negative terminal of Zener diode F10P40; The diode SR560 has its anode connected to the second terminal of resistor R4, and its cathode outputting V+. A 'o' is set at the node between the anode of diode SR560 and the second terminal of resistor R4. + contact; A polarized capacitor C7 is provided, with its positive terminal connected to the second end of the resistor R4 and its negative terminal connected to the ground terminal of the primary coil. Resistor R5, the first end of which is connected to the ground terminal of the first primary coil; Inductor L1 has a first coil and a second coil. The first end of the first coil is connected to the negative terminal of the diode SR560, and the second end of the first coil outputs a B+ circuit. The first end of the second coil is connected to the second end of the resistor R5, and the second end of the second coil outputs a B- circuit. Diode D8, the positive terminal of which is connected to the first terminal of the secondary winding, the second terminal of which is grounded, and the negative terminal of which outputs VCC voltage; A polarized capacitor C14 is provided, the positive terminal of which is connected to the negative terminal of the diode D8, and the negative terminal of which is connected to the ground terminal of the secondary coil.

3. The lithium battery pulse repair system according to claim 2, characterized in that, When the lithium battery pulse repair system is in standby mode, the B+ circuit outputs a voltage of 42V; when the lithium battery pulse repair system is in the off state, the B+ circuit outputs a voltage of 38V.

4. A lithium battery pulse repair system according to claim 2, characterized in that, The pulse detection circuit includes a microcontroller U3, where pin 1 is a spare pin and pin 2 is the battery voltage divider detection port. The pulse detection circuit includes a series resistor consisting of resistors R29, R30, R31, R32 and R33 connected in sequence. One end of the series resistor is connected to the B+ circuit, and the other end is connected to pin 2 of the microcontroller U3. The resistor R29 is connected in parallel with resistors R27 and R28; A capacitor C8 is connected to the circuit node between resistors R32 and R33. The other end of capacitor C8 is grounded. Resistors R34 and R35 are connected in parallel with capacitor C8. The microcontroller U3 is also connected to a capacitor C71 at pin 2, and the other end of the capacitor C71 is connected to the ground terminal of the capacitor C8. Pin 3 of the microcontroller U3 is a spare pin; A capacitor C5 is connected between pin 4 and pin 5 of the microcontroller U3. A resistor R22 is also connected to pin 4 of the microcontroller U3. The other end of the resistor R22 is connected to a 5.1V voltage. Pin 5 of the microcontroller U3 is grounded. Pin 6 of the microcontroller U3 is a current output control port, which is connected to the first end of resistor R161. The other two ends of resistor R161 are connected to the operational amplifier circuit. Pin 7 of the microcontroller U3 is the shutdown output control port, which is connected to a resistor R16. The other end of the resistor R16 is connected to the optocoupler circuit. The 8th pin of the microcontroller U3 is a current detection port, which is connected to the first end of resistor R23, the negative terminal of Zener diode ZD1, the first end of capacitor C6, and the negative terminal of diode D2. The second end of R23, the positive terminal of Zener diode ZD1, and the second end of capacitor C6 are interconnected. The positive terminal of diode D2 is connected to the first end of resistor R231, and the second end of resistor R231 is connected to the operational amplifier circuit. Pin 9 of the microcontroller U3 is connected to the first end of resistor R8. The second end of resistor R8 is connected to the base of NPN transistor Q3. The collector of NPN transistor Q3 is connected to the FAN circuit. The emitter of NPN transistor Q3 is grounded. The FAN circuit is connected to the fan drive circuit. The microcontroller U3 outputs 5V voltage at pin 10; Pin 11 of the microcontroller U3 is a spare pin; Pin 12 of the microcontroller U3 is connected to the first end of resistor R11, the second end of resistor R11 is connected to the positive terminal of LED1, and the negative terminal of LED1 is grounded. Pin 13 of the microcontroller U3 is connected to the first end of resistor R111, and the second end of resistor R111 is connected to the positive terminal of green LED2. Pin 14 of the microcontroller U3 is connected to the first end of resistor R12, and the second end of resistor R12 is connected to the positive terminal of red LED3. The negative terminals of red LED3 and green LED2 are interconnected and grounded.

5. A lithium battery pulse repair system according to claim 4, characterized in that, The operational amplifier circuit includes a 358 operational amplifier U2; Pin 1 of the 358 op-amp U2 is connected to the second terminal of resistor R231 and the first terminal of resistor R211; Pin 2 of the 358 op-amp U2 is connected to the first end of resistor R101 and the first end of resistor R102, respectively. The second end of resistor R101 is connected to a 5V voltage, and the second end of resistor R102 is grounded. Pin 3 of the 358 op-amp U2 is connected to the second end of resistor R211 and the first end of resistor R103, respectively. The second end of resistor R103 is connected to the second end of resistor R5. Pin 4 of the 358 op-amp U2 is grounded; Pin 5 of the 358 op-amp U2 is connected to the first end of resistor R21, the first end of resistor R20, the first end of resistor R19 and the second end of resistor R161 respectively. The second ends of resistor R21 and resistor R20 are interconnected and grounded. The second end of resistor R19 is connected to a 5V voltage. Pin 6 of the 358 op-amp U2 is connected to the first end of capacitor C3 and the first end of resistor R18, respectively. The second end of capacitor C3 is connected to pin 7 of the 358 op-amp U2, and the second end of resistor R18 is connected to the second end of resistor R103. Pin 7 of the 358 op-amp U2 is also connected to the first end of capacitor C4, and the second end of capacitor C4 is grounded. Pin 8 of the 358 op-amp U2 is connected to the VCC circuit.

6. A lithium battery pulse repair system according to claim 5, characterized in that, The optocoupler circuit includes an optocoupler IC1. The positive terminal of the optocoupler IC1 is connected to the first terminal of resistor R3, and the negative terminal of the optocoupler IC1 is connected to the first terminal of resistor R2, the negative terminal of voltage regulator chip U1, the first terminal of resistor R1, and the first terminal of resistor R17. The second terminal of resistor R17 is connected to the positive terminal of diode D1, and the negative terminal of diode D1 is connected to pin 7 of the 358 operational amplifier U2. The second terminals of resistor R3 and R2 are interconnected and connected to the VCC circuit. The positive terminal of the voltage regulator chip U1 is grounded. REF The pins are respectively connected to the first terminal of capacitor C1, the first terminal of resistor R15, the first terminal of adjustable resistor R104, the first terminal of resistor R13, and the second terminal of resistor R16. The second terminal of capacitor C1 is connected to the second terminal of resistor R1. The second terminal of resistor R15 is respectively connected to the first terminal of resistor R151, the second terminal of adjustable resistor R104, and the adjustable pin of adjustable resistor R104. The second terminal of resistor R151 is grounded. The second end of resistor R13 is connected to the first end of resistor R14, the second end of resistor R14 is connected to the first end of resistor R24, the second end of resistor R24 ​​is connected to the first end of resistor R25, and the second end of resistor R25 is connected to the o + The contact point is further connected in parallel with resistor R26, which is also resistor R25.

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