Lithium battery automatic test system supporting remote control

Abstract

The utility model discloses a lithium battery automatic test system supporting remote control, which comprises a lithium battery detection module and a master control module, the master control module is connected with the lithium battery detection module, and the lithium battery detection module comprises a first detection circuit, a second detection circuit, a lithium battery charging circuit and a discharging circuit. The main control module comprises an MCU circuit, an ESP8266WIFI circuit, a DS18B20 temperature detection circuit and a power supply, the first detection circuit and the second detection circuit are connected with the power supply, the lithium battery charging circuit is connected with the power supply, the power supply is connected with the MCU circuit, the discharging circuit is connected with the MCU circuit, the temperature detection circuit is connected with the MCU circuit, and the WIFI circuit is connected with the MCU circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and specifically relates to a lithium battery automatic test system supporting remote control. Background Technique

[0002] Under the background of the global transition to green and sustainable energy, lithium batteries have been widely used in many fields such as electric vehicles, energy storage systems, and portable electronic devices due to their high energy density, long cycle life, environmental protection, etc. However, the performance, safety, and service life of lithium batteries largely depend on the management and control of their charge and discharge processes. In order to ensure the quality and performance of battery products, an accurate, efficient, and intelligent lithium battery charge and discharge test system is particularly important.

[0003] At present, although there are some charge and discharge test devices on the market, many devices still have deficiencies in terms of function, accuracy, intelligence level, and remote monitoring ability. Especially on large-scale production lines, there is a lack of a highly integrated test system that can real-time monitor the charge and discharge status of batteries, accurately control the charge and discharge process, automatically record and analyze test data, and support remote operation.

[0004] Therefore, a lithium battery automatic test system supporting remote control is proposed. Summary of the Invention

[0005] The purpose of the utility model is to provide a lithium battery automatic test system supporting remote control, which makes full use of modern embedded technology and Internet of Things technology, integrates STM32 microcontroller, INA219 current and voltage detection module, DS18B20 temperature sensor, relay, and ESP8266-WIFI communication module, aiming to build an intelligent test platform that can not only meet the accurate test requirements of the laboratory but also adapt to batch detection on the production line. By real-time monitoring and accurately controlling parameters such as current, voltage, temperature, and power during the charge and discharge process of lithium batteries, and through WIFI wireless communication to achieve remote monitoring and control, this project can not only greatly improve the efficiency and accuracy of lithium battery performance testing, but also help enterprises optimize production processes, improve product quality, and ensure the safe use of batteries.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A lithium battery automatic test system supporting remote control includes a lithium battery detection module and a main control module. The main control module is connected to the lithium battery detection module. The lithium battery detection module includes a first detection circuit, a second detection circuit, a lithium battery charging circuit, and a discharge circuit;

[0008] The main control module includes an MCU circuit, an ESP8266 WIFI circuit, a DS18B20 temperature detection circuit, and a power supply;

[0009] The first detection circuit and the second detection circuit are connected to the power supply, and the lithium battery charging circuit is connected to the power supply;

[0010] The power supply is connected to the MCU circuit;

[0011] The discharge circuit is connected to the MCU circuit;

[0012] The temperature detection circuit is connected to the MCU circuit;

[0013] The WIFI circuit is connected to the MCU circuit.

[0014] Furthermore, the first detection circuit includes a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a capacitor C7, a capacitor C8, a capacitor C9, and a chip U2;

[0015] Pin 1 and pin 2 of the chip U2 are connected to the resistor R9, pin 3 of the chip is connected to the ground wire, pin 4 of the chip U2 is connected to the capacitor C9 and the power supply, the other end of the capacitor C9 is connected to the ground wire, pin 5 of the chip U2 is connected to the resistor R11, pin 6 of the chip U2 is connected to the resistor R10, the other ends of the resistor R10 and the resistor R11 are connected to the power supply, pin 7 of the chip U2 is connected to the capacitor C8 and the resistor R7, the other end of the capacitor C8 is connected to the power supply, the other end of the resistor R7 is connected to the ground wire, pin 8 of the chip U2 is connected to the capacitor C7 and the resistor R8, the other end of the capacitor C7 is connected to the power supply, and the other end of the resistor R8 is connected to the ground wire.

[0016] Furthermore, the second detection circuit has the same structure as the first detection circuit;

[0017] The model numbers of the chip U4 in the second detection circuit and the chip U2 in the first detection circuit are both INA219AIDCNR.

[0018] Furthermore, the lithium battery charging circuit includes a resistor R13, a resistor R14, R15, a resistor R17, a resistor R18, a resistor R19, capacitors C10, C11, C12, C13, C14, C15, C16, C17, C18, LED lamps L3, L4, diodes D2, D5, MOS transistor Q2, sockets CN1, CN2, inductor L2, and chip U3;

[0019] Pin 1 of the chip U3 is connected to capacitor C14, the other end of capacitor C14 is connected to pin 1 of socket CN1, pins 2 and 3 of the chip U3 are connected to the ground wire, pin 4 of the chip U3 is connected to the negative pole of LED L4, the positive pole of LED L4 is connected to resistor R15, the other end of resistor R15 is connected to capacitor C10, capacitor C11, and pin 1 of socket CN1, pin 5 of the chip U3 is connected to the negative pole of LED L3, the positive pole of LED L3 is connected to resistor R14, the other end of resistor R14 is connected to capacitor C10, capacitor C11, and pin 1 of socket CN1, pin 6 of the chip U3 is connected to resistor R18, the other end of resistor R18 is connected to the ground wire, pin 7 of the chip U3 is connected to resistor R19, the other end of resistor R19 is connected to the ground wire, pin 8 of the chip U3 is connected to capacitor C16, the other end of capacitor C16 is connected to the ground wire, pin 9 of the chip U3 is connected to R17, the other end of resistor R17 is connected to capacitor C17, the other end of capacitor C17 is connected to pin 10 of the chip U3 which is connected to the ground wire, pin 11 of the chip U3 is connected to capacitor C18, the other end of capacitor C18 is connected to the ground wire;

[0020] Pin 12 of the chip U3 is left floating, pin 13 of the chip U3 is connected to inductor L2 and resistor R13, pin 14 of the chip U3 is connected to resistor R13, capacitor C12, and resistor C13, the other ends of capacitor C12 and capacitor C13 are connected to the ground wire;

[0021] Pin 15 of the chip U3 is connected to pin 1 of CN1 and capacitor C15, the other end of capacitor C15 is connected to the ground wire, pin 16 of the chip U3 is connected to the gate of MOS transistor Q2, the source of MOS transistor Q2 is connected to pin 1 of socket CN1, the drain of MOS transistor Q2 is connected to diode D2, the other end of diode D5 is connected to the ground wire, and pin 2 of socket CN1 is connected to the power supply.

[0022] Furthermore, the model of the chip U3 is CN3702.

[0023] Furthermore, the discharge circuit includes resistors R1, R2, R3, R4, R5, R6, capacitors C1, C2, C3, C4, C5, C6, diode D1, inductor L1, and chip U1;

[0024] Pin 1 of the chip U1 is connected to capacitor C4, the negative electrode of diode D1, and inductor L1. The other end of the diode D1 is connected to the ground wire. Pin 2 of the chip U1 is connected to resistor R3 and resistor R4. The other end of the resistor R4 is grounded. Pin 3 of the chip U1 is connected to capacitor C2. Pin 4 of the chip U1 is connected to resistor R4 and resistor R6. Pin 5 of the chip U1, one end of resistor R2 and capacitor C3 are grounded. Pin 6 of the chip U1 is connected to resistor R2. Pin 7 of the chip U1 is connected to resistor R3 and capacitor C3. Pin 8 of the chip U1 is connected to capacitor C4. Pin 9 of the chip U1 is grounded. The other end of the resistor R6 is connected to capacitor C5, capacitor C6, and inductor L1. The other ends of the capacitor C5 and capacitor C6 are grounded;

[0025] The model of the chip U1 is MP1584EN.

[0026] Further, the chip model of the MCU circuit is STM32F103C8T6. Pins 20 and 44 of the MCU circuit are respectively connected to resistors R3 and R5, and the other ends are both grounded. Pins 24, 36, 48, 9 of the MCU circuit.

[0027] Further, an OLED module and an alarm sound and light circuit are provided;

[0028] The OLED module is provided with an OLED interface. Pin 1 of the OLED interface is grounded. Pin 2 of the OLED interface is connected to 3.3V. Pin 3 of the OLED interface is connected to pin 42 of the MCU circuit. Pin 4 of the OLED is connected to pin 41 of the MCU circuit;

[0029] The alarm sound and light circuit includes resistor R1, triode Q2, LED lamp D1, and buzzer B1. The collector of the triode Q2 is connected to 5v voltage. The base of the triode Q2 is connected to the resistor R1. The other end of the resistor R1 is connected to pin 13 of the MCU circuit. The emitter of the triode Q2 is connected to the buzzer B1 and the positive electrode of the LED lamp D1. The negative electrode of the LED lamp D1 is grounded. The other end of the buzzer B1 is grounded.

[0030] Further, the DS18B20 temperature detection circuit is provided with an interface. Pin 1 of the interface is connected to 3.3V. Pin 2 of the interface is connected to pin 3 of the MCU circuit. Pin 3 of the interface is grounded.

[0031] Furthermore, the ESP8266 WIFI circuit is provided with an ESP8266 interface. Pin 1 of the ESP8266 interface is connected to pin 38 of the MCU circuit, pin 2 of the ESP8266 interface is connected to pin 12 of the MCU circuit, pin 3 of the ESP8266 interface is connected to pin 21 of the MCU circuit, pin 4 of the ESP8266 interface is connected to pin 22 of the MCU circuit, pin 5 of the ESP8266 interface is grounded, pin 6 of the ESP8266 interface is connected to a 5V voltage, and a capacitor C16 is connected between pin 5 and pin 6 of the ESP8266 interface.

[0032] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0033] By applying the INA219 detection chip to the lithium battery test system, not only can the charging and discharging voltage, current, and power of the battery be measured in real time to obtain complete data during testing, but also the charging and discharging states can be automatically switched in a timely manner by detecting the battery voltage, solving the problem that other testing methods require manual change of the charging state, improving the detection efficiency, and effectively preventing overcharging and over-discharging of lithium batteries.

[0034] By applying the ESP8266 WIFI remote communication technology to the lithium battery test system, a wireless connection with the upper computer is realized, and the real-time collected battery state data is transmitted to the Qt application program on a computer or mobile phone through WiFi. The user can remotely start or stop the charging and discharging process of the lithium battery through the upper computer, enhancing the convenience and controllability of the system. It solves the problem that other testing systems can only obtain data and change states when in front of them.

[0035] By applying the DS18B20 temperature sensor to the lithium battery test system, the battery temperature is detected in real time. When the temperature is abnormal, the buzzer alarms, the relay is powered off, and at the same time, the upper computer reminds the user that there is a problem, reducing the occurrence probability of potential safety hazards during testing. Description of the Drawings

[0036] Figure 1 is the MP1584 discharge circuit;

[0037] Figure 2 is the CN3702 charging circuit;

[0038] Figure 3 is the first INA219 detection circuit;

[0039] Figure 4 is the second INA219 detection circuit;

[0040] Figure 5 is the MCU circuit;

[0041] Figure 6 is the OLED interface;

[0042] Figure 7 is the DS18B20 interface;

[0043] Figure 8 is the alarm sound and light circuit;

[0044] Figure 9 is the ESP8266 interface;

[0045] Figure 10 is the power supply. Specific embodiments

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0047] Embodiment 1:

[0048] Please refer to Figure 1-10 , the present invention provides a technical solution:

[0049] A lithium battery automatic test system supporting remote control includes a lithium battery detection module and a main control module. The main control module is connected to the lithium battery detection module. The lithium battery detection module includes a first detection circuit, a second detection circuit, a lithium battery charging circuit, and a discharge circuit. The main control module includes an MCU circuit, an ESP8266WIFI circuit, a DS18B20 temperature detection circuit, and a power supply. The first detection circuit and the second detection circuit are connected to the power supply. The lithium battery charging circuit is connected to the power supply. The power supply is connected to the MCU circuit. The discharge circuit is connected to the MCU circuit. The temperature detection circuit is connected to the MCU circuit. The WIFI circuit is connected to the MCU circuit.

[0050] As Figure 3 shown:

[0051] The first detection circuit includes resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, capacitor C7, capacitor C8, capacitor C9, and chip U2;

[0052] Connect pin 1 and pin 2 of chip U2 to resistor R9, connect pin 3 of the chip to the ground wire, connect pin 4 of chip U2 to capacitor C9 and the power supply, connect the other end of capacitor C9 to the ground wire, connect pin 5 of chip U2 to resistor R11, connect pin 6 of chip U2 to resistor R10, connect the other ends of resistor R10 and resistor R11 to the power supply, connect pin 7 of chip U2 to capacitor C8 and resistor R7, connect the other end of capacitor C8 to the power supply, connect the other end of resistor R7 to the ground wire, connect pin 8 of chip U2 to capacitor C7 and resistor R8, connect the other end of capacitor C7 to the power supply, connect the other end of resistor R8 to the ground wire, and connect the circuit under test in series with R9 to perform the measurement.

[0053] As Figure 3 , 4 shown:

[0054] The second detection circuit has the same circuit structure as the first detection circuit. The chip U4 model of the second detection circuit and the chip U2 model of the first detection circuit are both INA219AIDCNR.

[0055] As Figure 2 , 10 shown:

[0056] The lithium battery charging circuit includes resistors R13, R14, R15, R17, R18, R19, capacitors C10, C11, C12, C13, C14, C15, C16, C17, C18, LED lights L3, L4, diodes D2, D5, MOS transistor Q2, sockets CN1, CN2, inductor L2, and chip U3;

[0057] Connect the pin 1 of chip U3 to capacitor C14, connect the other end of capacitor C14 to pin 1 of socket CN1, connect the pin 2 and pin 3 of chip U3 to the ground wire, connect the pin 4 of chip U3 to the negative pole of LED L4, connect the positive pole of LED L4 to resistor R15, connect the other end of resistor R15 to capacitor C10, capacitor C11 and pin 1 of socket CN1, connect the pin 5 of chip U3 to the negative pole of LED L3, connect the positive pole of LED L3 to resistor R14, connect the other end of resistor R14 to capacitor C10, capacitor C11 and pin 1 of socket CN1, connect the pin 6 of chip U3 to resistor R18, connect the other end of resistor R18 to the ground wire, connect the pin 7 of chip U3 to resistor R19, connect the other end of resistor R19 to the ground wire, connect the pin 8 of chip U3 to capacitor C16, connect the other end of capacitor C16 to the ground wire, connect the pin 9 of chip U3 to R17, connect the other end of resistor R17 to capacitor C17, connect the other end of capacitor C17 to pin 10 of chip U3 to the ground wire, connect the pin 11 of chip U3 to capacitor C18, connect the other end of capacitor C18 to the ground wire, where the pin 12 of chip U3 is left floating, connect the pin 13 of chip U3 to inductor L2 and resistor R13, connect the pin 14 of chip U3 to resistor R13, capacitor C12 and resistor C13, connect the other ends of capacitor C12 and capacitor C13 to the ground wire, connect the pin 15 of chip U3 to pin 1 of CN1 and capacitor C15, connect the other end of capacitor C15 to the ground wire, connect the pin 16 of chip U3 to the gate of MOS transistor Q2, connect the source of MOS transistor Q2 to pin 1 of socket CN1, connect the drain of MOS transistor Q2 to diode D2, connect the other end of diode D5 to the ground wire, and connect pin 2 of socket CN1 to the power supply;

[0058] The model of the above chip U3 is CN3702.

[0059] As Figure 1 shown:

[0060] The discharge circuit includes resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, R6, capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, C6, diode D1, inductor L1, and chip U1;

[0061] Connect the pin 1 of chip U1 to capacitor C4, the negative electrode of diode D1, and inductor L1. Connect the other end of diode D1 to the ground wire. Connect the pin 2 of chip U1 to resistor R3 and resistor R4. Connect the other end of resistor R4 to the ground. Connect the pin 3 of chip U1 to capacitor C2. Connect the pin 4 of chip U1 to resistor R4 and resistor R6. Connect the pin 5 of chip U1, resistor R2, and one end of capacitor C3 to the ground. Connect the pin 6 of chip U1 to resistor R2. Connect the pin 7 of chip U1 to resistor R3 and capacitor C3. Connect the pin 8 of chip U1 to capacitor C4. Connect the pin 9 of chip U1 to the ground. Connect the other end of resistor R6 to capacitor C5, capacitor C6, and inductor L1. Connect the other ends of capacitor C5 and capacitor C6 to the ground. The model of chip U1 is MP1584EN.

[0062] As Figure 1 , 5 shown:

[0063] The chip model of the MCU circuit is STM32F103C8T6. The pins 20 and 44 of the MCU circuit are connected to resistors R3 and R5 respectively, and the other ends are both grounded.

[0064] As Figure 5 , 6 , 8 shown:

[0065] The system is equipped with an OLED module and an alarm sound and light circuit. Among them, the OLED module is of the plug-in type and is provided with an OLED interface. Connect the pin 1 of the OLED interface to the ground, connect the pin 2 of the OLED interface to 3.3V, connect the pin 3 of the OLED interface to the pin 42 of the MCU circuit, and connect the pin 4 of the OLED to the pin 41 of the MCU circuit. The alarm sound and light circuit includes resistor R1, triode Q2, LED lamp D1, and buzzer B1. Connect the collector of triode Q2 to 5V voltage, connect the base of triode Q2 to resistor R1, connect the other end of resistor R1 to the pin 13 of the MCU circuit, connect the emitter of triode Q2 to the positive electrodes of buzzer B1 and LED lamp D1, connect the negative electrode of LED lamp D1 to the ground, and connect the other end of buzzer B1 to the ground.

[0066] As Figure 5 , 7 shown:

[0067] Among them, the DS18B20 temperature detection circuit is of the plug-in type and has an interface. Connect the pin 1 of the interface to 3.3V, connect the pin 2 of the interface to the pin 3 of the MCU circuit, and connect the pin 3 of the interface to the ground.

[0068] As Figure 5 , 9 shown:

[0069] The ESP8266WIFI circuit is equipped with an ESP8266 interface. Connect pin 1 of the ESP8266 interface to pin 38 of the MCU circuit, pin 2 of the ESP8266 interface to pin 12 of the MCU circuit, pin 3 of the ESP8266 interface to pin 21 of the MCU circuit, pin 4 of the ESP8266 interface to pin 22 of the MCU circuit, ground pin 5 of the ESP8266 interface, connect pin 6 of the ESP8266 interface to 5V voltage, and connect a capacitor C16 between pin 5 and pin 6 of the ESP8266 interface.

[0070] Working principle:

[0071] Connect the battery to the lithium battery detection module. The output end of the lithium battery connection module is connected to the load for discharging. The lithium battery detection module is connected to the main control module to receive charge and discharge data. After charging is completed, the relay switches to the discharge mode, and after discharging is completed, the relay switches to the charging mode, cycling in this way and recording data.

[0072] Use the INA219AIDCNR detection circuit to accurately measure the current, voltage, and the deduced power and electricity information during the charging and discharging processes of the lithium battery in real time, and can accurately judge whether the battery is fully charged or discharged.

[0073] The system controls two relays through the MCU circuit (STM32F103C8T6) to respectively realize the independent charging and discharging operations of the lithium battery, and intelligently switches the charge and discharge modes according to the battery status to ensure that the battery will not be overcharged or over-discharged.

[0074] The current charge / discharge status, remaining battery power, current, and voltage values are displayed in real time on the local 0.96-inch SPI interface OLED display, intuitively presenting the battery status.

[0075] Integrate the DS18B20 temperature sensor to monitor the temperature change during the charge and discharge processes of the battery in real time, ensure that the temperature is within the safe range, and display the temperature information on the display screen in real time.

[0076] Realize the real-time recording and long-term storage of key parameters (such as time, current, voltage, temperature, electricity, etc.) during the charge and discharge processes, which is convenient for later data analysis and product quality tracking.

[0077] Equipped with an ESP8266WIFI module to realize wireless connection with the upper computer, and transmit the real-time collected battery status data to the Qt application program on the computer or mobile phone through WiFi. The upper computer remotely sends commands, and the main control module completes reception, processing, and recognition through the ESP8266, and performs corresponding operations, such as changing the relay status, enhancing the convenience and controllability of the system.

[0078] Overload protection and temperature monitoring mechanisms. When abnormal conditions are detected, the system can immediately take measures to cut off the charge and discharge circuits to ensure the safety of the device.

[0079] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic lithium battery test system supporting remote control, comprising a lithium battery detection module and a main control module, the main control module is connected to the lithium battery detection module, and is characterized in that: The lithium battery detection module includes a first detection circuit, a second detection circuit, a lithium battery charging circuit, and a discharging circuit; The main control module includes an MCU circuit, an ESP8266 WIFI circuit, a DS18B20 temperature detection circuit, and a power supply; The first detection circuit and the second detection circuit are connected to the power supply, and the lithium battery charging circuit is connected to the power supply; The power supply is connected to the MCU circuit; The discharging circuit is connected to the MCU circuit; The temperature detection circuit is connected to the MCU circuit; The WIFI circuit is connected to the MCU circuit.

2. The automatic lithium battery testing system supporting remote control according to claim 1, wherein: The first detection circuit includes resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, capacitor C7, capacitor C8, capacitor C9, and chip U2; Pin 1 and pin 2 of the chip U2 are connected to resistor R9, pin 3 of the chip is connected to the ground wire, pin 4 of the chip U2 is connected to capacitor C9 and the power supply, the other end of capacitor C9 is connected to the ground wire, pin 5 of the chip U2 is connected to resistor R11, pin 6 of the chip U2 is connected to resistor R10, the other ends of resistor R10 and resistor R11 are connected to the power supply, pin 7 of the chip U2 is connected to capacitor C8 and resistor R7, the other end of capacitor C8 is connected to the power supply, the other end of resistor R7 is connected to the ground wire, pin 8 of the chip U2 is connected to capacitor C7 and resistor R8, the other end of capacitor C7 is connected to the power supply, and the other end of resistor R8 is connected to the ground wire.

3. The automatic lithium battery testing system supporting remote control according to claim 2, wherein: The second detection circuit has the same structure as the first detection circuit; The model of chip U4 in the second detection circuit and the model of chip U2 in the first detection circuit are both INA219AIDCNR.

4. The automatic lithium battery testing system supporting remote control according to claim 1, characterized in that: The lithium battery charging circuit includes resistor R13, resistor R14, R15, resistor R17, resistor R18, resistor R19, capacitor C10, capacitor C11, capacitor C12, capacitor C13, capacitor C14, capacitor C15, capacitor C16, capacitor C17, C18, LED lamp L3, LED lamp L4, diode D2, diode D5, MOS tube Q2, socket CN1, socket CN2, inductor L2, and chip U3; Pin 1 of the chip U3 is connected to the capacitor C14, the other end of the capacitor C14 is connected to pin 1 of the socket CN1, pins 2 and 3 of the chip U3 are connected to the ground wire, pin 4 of the chip U3 is connected to the negative pole of the LED L4, the positive pole of the LED L4 is connected to the resistor R15, the other end of the resistor R15 is connected to the capacitor C10, the capacitor C11, and pin 1 of the socket CN1, pin 5 of the chip U3 is connected to the negative pole of the LED L3, the positive pole of the LED L3 is connected to the resistor R14, the other end of the resistor R14 is connected to the capacitor C10, the capacitor C11, and pin 1 of the socket CN1, pin 6 of the chip U3 is connected to the resistor R18, the other end of the resistor R18 is connected to the ground wire, pin 7 of the chip U3 is connected to the resistor R19, the other end of the resistor R19 is connected to the ground wire, pin 8 of the chip U3 is connected to the capacitor C16, the other end of the capacitor C16 is connected to the ground wire, pin 9 of the chip U3 is connected to R17, the other end of the resistor R17 is connected to the capacitor C17, the other end of the capacitor C17 is connected to pin 10 of the chip U3 which is connected to the ground wire, pin 11 of the chip U3 is connected to the capacitor C18, the other end of the capacitor C18 is connected to the ground wire; Pin 12 of the chip U3 is floating, pin 13 of the chip U3 is connected to the inductor L2 and the resistor R13, pin 14 of the chip U3 is connected to the resistor R13, the capacitor C12, and the resistor C13, the other ends of the capacitor C12 and the capacitor C13 are connected to the ground wire; Pin 15 of the chip U3 is connected to pin 1 of CN1 and the capacitor C15, the other end of the capacitor C15 is connected to the ground wire, pin 16 of the chip U3 is connected to the gate of the MOS transistor Q2, the source of the MOS transistor Q2 is connected to pin 1 of the socket CN1, the drain of the MOS transistor Q2 is connected to the diode D2, the other end of the diode D5 is connected to the ground wire, and pin 2 of the socket CN1 is connected to the power supply.

5. The automatic lithium battery testing system supporting remote control according to claim 4, wherein: The model of the chip U3 is CN3702.

6. The automatic lithium battery testing system supporting remote control according to claim 1, wherein: The discharge circuit includes the resistors R1, R2, R3, R4, R5, R6, the capacitors C1, C2, C3, C4, C5, C6, the diode D1, the inductor L1, and the chip U1; Pin 1 of the chip U1 is connected to the capacitor C4, the negative pole of the diode D1, and the inductor L1, the other end of the diode D1 is connected to the ground wire, pin 2 of the chip U1 is connected to the resistors R3 and R4, the other end of the resistor R4 is grounded, pin 3 of the chip U1 is connected to the capacitor C2, pin 4 of the chip U1 is connected to the resistors R4 and R6, pin 5 of the chip U1 and one ends of the resistor R2 and the capacitor C3 are grounded, pin 6 of the chip U1 is connected to the resistor R2, pin 7 of the chip U1 is connected to the resistor R3 and the capacitor C3, pin 8 of the chip U1 is connected to the capacitor C4, pin 9 of the chip U1 is grounded, the other end of the resistor R6 is connected to the capacitors C5, C6, and the inductor L1, and the other ends of the capacitors C5 and C6 are grounded; The model of the chip U1 is MP1584EN.

7. An automatic lithium battery testing system supporting remote control according to claim 6, characterized in that: The chip model of the MCU circuit is STM32F103C8T6. Pin 20 and pin 44 of the MCU circuit are respectively connected to resistors R3 and R5, and the other ends are both grounded. Pins 24, 36, 48, and 9 of the MCU circuit.

8. The automatic lithium battery testing system supporting remote control according to claim 7, characterized in that: An OLED module and an alarm sound and light circuit are provided; The OLED module is provided with an OLED interface. Pin 1 of the OLED interface is grounded, pin 2 of the OLED interface is connected to 3.3V, pin 3 of the OLED interface is connected to pin 42 of the MCU circuit, and pin 4 of the OLED is connected to pin 41 of the MCU circuit; The alarm sound and light circuit includes a resistor R1, a triode Q2, an LED D1, and a buzzer B1. The collector of the triode Q2 is connected to a 5V voltage. The base of the triode Q2 is connected to the resistor R1. The other end of the resistor R1 is connected to pin 13 of the MCU circuit. The emitter of the triode Q2 is connected to the buzzer B1 and the positive pole of the LED D1. The negative pole of the LED D1 is grounded, and the other end of the buzzer B1 is grounded.

9. The automatic lithium battery testing system supporting remote control according to claim 7, wherein: The DS18B20 temperature detection circuit is provided with an interface. Pin 1 of the interface is connected to 3.3V, pin 2 of the interface is connected to pin 3 of the MCU circuit, and pin 3 of the interface is grounded.

10. The automatic lithium battery testing system supporting remote control according to claim 1, wherein: The ESP8266WIFI circuit is provided with an ESP8266 interface. Pin 1 of the ESP8266 interface is connected to pin 38 of the MCU circuit, pin 2 of the ESP8266 interface is connected to pin 12 of the MCU circuit, pin 3 of the ESP8266 interface is connected to pin 21 of the MCU circuit, pin 4 of the ESP8266 interface is connected to pin 22 of the MCU circuit, pin 5 of the ESP8266 interface is grounded, pin 6 of the ESP8266 interface is connected to 5V voltage, and a capacitor C16 is connected between pin 5 and pin 6 of the ESP8266 interface.

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