Intelligent protective clamp for emergency starting power supply

Abstract

The invention relates to the technical field of emergency starting control circuits, in particular to an emergency starting power supply intelligent protection clamp which comprises a controller body, a controller circuit board is arranged in a controller, an EC5 plug and a nixie tube are fixedly arranged on the side face of the controller, the nixie tube displays the circuit state, the EC5 plug is used for being connected with an emergency starting power supply, and the controller circuit board is connected with the controller body. And a storage battery anode clamp and a storage battery cathode clamp are arranged on the other side of the controller. According to the invention, an intelligent detection and display system comprising a single-chip microcomputer, a voltage acquisition circuit, a state identification circuit and a digital display is integrated in the controller, so that accurate measurement and digital display of the voltage of an emergency starting power supply and an automobile storage battery as well as visual code prompt of various types of faults are realized; a user can identify the condition of an emergency starting power supply or the condition of an automobile storage battery by means of the product provided by the utility model, extra detection equipment and support of professionals are not needed, and the user can operate by himself / herself by reading a specification and simply learning.

Description

An intelligent protective clip for emergency start-up power supplies Technical Field

[0001] This invention relates to the field of emergency start control circuit technology, and in particular to an intelligent protective clip for an emergency start power supply. Background Technology

[0002] Existing smart jump starter clips typically only offer basic protection functions and provide status indications via simple indicator lights. These products mostly monitor the undervoltage state of the jump starter by setting a threshold voltage, using flashing lights or color changes as a warning.

[0003] However, such indication methods cannot provide users with precise voltage values, making it difficult for them to intuitively understand the real-time voltage status of the emergency jump starter or car battery. This makes it impossible to accurately determine whether the power supply is sufficient, whether the battery is aging or faulty, leading to uncertainty and inconvenience during use. Furthermore, when the product triggers protection due to short circuits, reverse connections, overheating, or overcurrent, existing solutions typically only indicate a "fault" by a single flashing or extinguishing indicator light. Users cannot distinguish the specific type of fault, nor can they perform targeted preliminary troubleshooting or take appropriate countermeasures based on the indication. Often, specialized equipment or personnel intervention is required, reducing the product's ease of use and self-maintenance capabilities. We propose an intelligent protective clip for emergency jump starters. Summary of the Invention

[0004] In order to overcome the technical problems existing in the prior art, the present invention provides an intelligent protective clip for emergency start-up power supplies.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A controller body is included, with a controller circuit board inside. An EC5 plug and a digital tube are fixedly mounted on the side of the controller. The digital tube displays the circuit status. The EC5 plug is used to connect to an emergency starter power supply. A positive battery clamp and a negative battery clamp are mounted on the other side of the controller. The controller circuit board includes a relay KT1 and a relay drive control circuit. The controller circuit board also includes a first voltage divider resistor module and a second voltage divider resistor module. Furthermore, the controller circuit board includes a power supply switching circuit, a positive connection identification circuit, a reverse connection identification circuit, a current detection circuit, and a temperature detection circuit. The power supply switching circuit, the positive connection identification circuit, and the reverse connection identification circuit are located in the EC5 plug, the relay, and the positive and negative clamp circuit. The relay KT1 and the relay drive control circuit are also connected in parallel in the EC5 plug, the wiring harness, and the positive and negative clamp circuit. The controller circuit board also includes a microcontroller U1, which is connected to the EC5 plug, the wiring harness, and the positive and negative clamp circuit.

[0006] Furthermore, the relay drive control circuit includes resistor R1, transistor Q1, resistor R5, diode D6, resistor R11, diode D5, transistor Q2, resistor R8, and resistor R10. The input of resistor R1 is connected to one end of relay KT1, the drain of transistor Q1 is connected to the other end of resistor R1, resistor R11 is connected in series with the gate of transistor Q1, resistor R5 and diode D6 are connected in parallel between resistor R11 and the gate of transistor Q1, diode D5 is connected in parallel with relay KT1, the source of transistor Q2 is connected to VCC power supply, the drain of transistor Q2 is connected to the negative terminal of diode D5, resistor R8 is connected in parallel between VCC power supply and the gate of transistor Q2, and the input of resistor R10 is connected to resistor R8 and the gate of transistor Q2.

[0007] Furthermore, the first voltage divider resistor module includes resistor R7 and resistor R16. The input of resistor R7 is connected to the VCC power supply, and the input of resistor R16 is connected to the other end of resistor R7. The circuit between resistor R7 and resistor R16 is connected to the network identifier DETE1 pin of the module microcontroller U1.

[0008] Furthermore, the second voltage divider resistor module includes resistors R6 and R12. Resistors R6 and R12 are connected in series and the input is connected to the middle of the relay and positive clamp circuit. The circuit between resistors R7 and R16 is connected to the network identifier DETE2 pin of the module microcontroller U1.

[0009] Furthermore, the power supply switching circuit consists of diode D1, transistor Q3, resistor R4, and resistor R13. Diode D1 is connected to the EC5 connector, using the wire group and positive / negative clip circuit. The input of transistor Q3 is connected to the output of diode D1, and the output of transistor Q3 is connected to the positive terminal of VCC power supply. The input of the series circuit of resistors R4 and R13 is connected to the output of transistor Q3. Diode D2 is connected to the EC5 connector, using the wire group and positive / negative clip circuit. The output of diode D2 is connected to capacitor C1, which is a filter capacitor.

[0010] Furthermore, the positive polarity identification circuit consists of resistor R2, resistor R14, diode D4, transistor Q4, and transistor Q7. Resistor R2 is connected to the EC5 connector, using a wire group and positive / negative clamp circuit. The output of diode D4 is connected to the side of resistor R2. The drain output of transistor Q4 is connected to the positive terminal of diode D4. One end of resistor R14 is connected to the gate of transistor Q4, and the other end of resistor R14 is connected to a 5V power supply. The collector of transistor Q7 is connected to the gate of transistor Q4. The network identifier Port2 pin of microcontroller U1 is connected to the base of transistor Q7.

[0011] Furthermore, the reverse connection identification circuit consists of diode D3, resistor R3, transistor Q5, resistor R15, resistor R17, resistor R19, diode D8, transistor Q8, resistor R18, transistor Q6, resistor R9, dual-color LED1, and Zener diode D7. One end of resistor R19 is connected to a 5V power supply, and the other end is connected to the negative terminal of diode D8. The negative terminal of diode D3 is connected between the output terminal of relay KT1 and the positive clamp. The positive terminal of diode D3 is connected to the collector of transistor Q5. Resistor R3 is connected in parallel between the base and emitter of transistor Q5. One end of resistor R15 is connected to the base of transistor Q5. One end of resistor R17 is connected to the collector and emitter of transistor Q5, and the other end is connected to the negative terminal of diode D8.

[0012] Furthermore, the gate of transistor Q8 is connected to the negative terminal of diode D8, the drain of transistor Q8 is connected to the microcontroller U1 network identifier Port1, one end of resistor R18 is connected to the network identifier Port1, and the other end is connected to the gate of transistor Q6, the drain of transistor Q6 is connected to the microcontroller U1 network identifier REVERSE, the negative terminal of Zener diode D7 is connected to the gate of transistor Q6, one end of circuit R9 is connected to the microcontroller U1 network identifier REVERSE, and the other end is connected to the negative terminal of the red light-emitting diode of dual-color LED1, the positive terminal of the red light-emitting diode of dual-color LED1 is connected to a 5V power supply, and the positive terminal of the green light-emitting diode of dual-color LED1 is connected to the microcontroller U1 network identifier LED_G.

[0013] Compared with the prior art, the beneficial effects of this invention are as follows: 1. By integrating an intelligent detection and display system including a microcontroller, voltage acquisition circuit, status recognition circuit and digital display into the controller, this invention achieves accurate measurement and digital display of the voltage of the emergency jump starter and car battery, as well as intuitive code prompts for various types of faults. This allows users to identify the status of the emergency jump starter or car battery using this patented product without the need for additional testing equipment or professional support. Users can easily learn to operate the product by reading the instruction manual, which significantly improves the functionality, safety and user experience of the product.

[0014] 2. This invention uses a voltage divider acquisition circuit composed of resistors R7, R16, R6, and R12 to sample the voltage at the EC5 terminal (emergency power supply) and the clip terminal (car battery) in real time. The microcontroller U1 performs analog-to-digital conversion and drives the digital tube to directly display the real-time voltage value in digital form (e.g., 12.3V, 15.6V). This allows users to accurately grasp the power status without additional tools, providing a reliable basis for judging the power supply capacity and battery health, and achieving intuitive display.

[0015] 3. The circuit of this invention integrates multiple protection and identification circuits composed of specific components, such as short circuit identification, reverse connection identification, over-temperature detection, and over-current detection (e.g., components D3 and Q5 in the reverse connection identification circuit). The microcontroller U1 receives signals from these circuits through different pins, can accurately distinguish the fault type, and control the digital tube to display the corresponding fault code (e.g., E01 to E07). This code-based display method enables users to quickly identify specific faults (e.g., undervoltage, short circuit, reverse connection, etc.), facilitating preliminary fault location or taking correct safety measures according to the instruction manual.

[0016] 4. Through a power supply switching circuit composed of diode D1, transistor Q3, etc., the system can intelligently determine whether the EC5 terminal is connected to an emergency power supply and automatically switch the system power supply source to ensure the stable operation of the control circuit itself, while simplifying the user's operation steps.

[0017] 5. This invention, combined with relay KT1 and its driving circuit, can quickly cut off the main circuit when dangerous conditions such as reverse connection or short circuit are detected, achieving hardware-level protection. At the same time, the voltage range reference value (such as the normal voltage range before / after startup) and fault code displayed by the digital tube play a positive guiding and safety prompt role for user operation, reducing the risk of misuse. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the overall structure of the protective clip of the present invention; Figure 2 is a schematic diagram of the overall circuit of the control circuit board of the present invention; Figure 3 is a schematic diagram of the relay control circuit board of the control circuit board of the present invention; Figure 4 is a schematic diagram of the voltage divider resistor circuit at the EC5 terminal of the control circuit board of the present invention; Figure 5 is a schematic diagram of the voltage divider resistor circuit at the battery terminal of the control circuit board of the present invention; Figure 6 is a schematic diagram of the power supply switching circuit of the control circuit board of the present invention; Figure 7 is a schematic diagram of the normal identification circuit of the control circuit board of the present invention; Figure 8 is a schematic diagram of the reverse connection identification circuit of the control circuit board of the present invention; Figure 9 is a schematic diagram of the microcontroller circuit of the control circuit board of the present invention; Figure 10 is a schematic diagram of the remaining circuits of the control circuit board of the present invention; Figure 11 is a schematic diagram of the voltage value judgment of the present invention; Figure 12 is a schematic diagram of the digital tube fault of the present invention. Detailed Implementation

[0019] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0020] Example: As shown in Figure 1, an intelligent protective clip for an emergency jump starter includes a controller body. The controller contains a controller circuit board. An EC5 connector and a digital display are fixedly mounted on the side of the controller. The digital display shows the circuit status, and the EC5 connector is used to connect to the emergency jump starter. On the other side of the controller are a positive battery clip and a negative battery clip, which connect to the car battery. The clips are connected to the controller circuit board inside the controller via wires. As shown in Figures 2 and 3, the controller circuit board includes a relay KT1 and a relay drive control circuit. The relay KT1... As a switch, relay KT1 is initially in the off state upon power-up. The relay drive control circuit includes resistor R1, transistor Q1, resistor R5, diode D6, resistor R11, diode D5, transistor Q2, resistor R8, and resistor R10. The input of resistor R1 is connected to one end of relay KT1, and transistor Q1 is connected to the other end of resistor R1. Resistor R11 and transistor Q1 are connected in parallel, and their parallel circuit is grounded. Resistor R5 and diode D6 are connected in parallel between resistor R11 and transistor Q1. The outputs of resistor R5 and diode D6 are connected to KT DRV (relay driver). Diode D5 is connected in parallel with relay KT1. The input of transistor Q2 is connected to the output of diode D5. Resistor R8 and transistor Q2 are connected in parallel separately. The input of resistor R10 is connected to the output of the circuit between resistor R8 and transistor Q2. Diode D5 is the freewheeling diode for the relay KT1 coil, and diode D6 can accelerate the turn-off of transistor Q1. This constitutes the overall drive circuit for relay KT1.

[0021] As shown in Figures 2 and 9, the controller circuit board also includes a microcontroller U1. The microcontroller U1 is connected to the EC5 connector and uses a wire group and positive and negative clamp circuit. The microcontroller U1 identifies the instantaneous voltage divider value through its own network identifier DETE1 pin and performs analog-to-digital conversion (A / D conversion) to determine the current voltage status and displays it on the digital tube DT1. This circuit can be used to identify low voltage in the emergency power supply and perform corresponding protection. In addition, the microcontroller U1 identifies the instantaneous voltage divider value through its own network identifier DETE2 pin and performs analog-to-digital conversion (A / D conversion) to determine the current voltage status and displays it on the digital tube DT1.

[0022] As shown in Figure 4, the controller circuit board also includes a first voltage divider resistor module, which includes resistors R7 and R16. Resistor R7 is connected to the input of resistor R8 and the output of transistor Q2. Resistor R16 is connected to the other end of resistor R7. The circuit between resistors R7 and R16 is connected to the network identifier DETE1 pin of the microcontroller U1 in the module. Resistors R7 and R16 are used as voltage divider resistors to detect the voltage at the EC5 terminal.

[0023] As shown in Figures 4 and 5, the controller circuit board also includes a second voltage divider resistor module, which includes resistors R6 and R12. Resistors R6 and R12 are connected in series and input to the middle of the relay and positive clamp circuit, and connected to KT OUT (driver output). The circuit between resistors R7 and R16 is connected to the network identifier DETE2 pin of the module microcontroller U1. Resistors R6 and R12 are used as a voltage divider resistor module for detecting the battery terminal voltage. The controller circuit board also includes diode D2 and capacitor C1. Diode D2 is connected to the EC5 connector, using the wire group and positive and negative clamp circuit. Diode D2 provides reverse connection protection for the EC5 terminal. The input of capacitor C1 is connected to the output of diode D2. Capacitor C1 is a filter capacitor. The positive VCC power supply point of the resistor R7 extension circuit is connected to diode D2 and capacitor C1. Resistor R16 and capacitor C1 are grounded. A test point TP2 is set at the end of capacitor C1.

[0024] As shown in Figure 6, the controller circuit board also includes a power supply switching circuit, which consists of diode D1, transistor Q3, resistor R4, and resistor R13. Diode D1 is connected to the EC5 connector, using a wire group and positive and negative clamp circuit. The input of transistor Q3 is connected to the output of diode D1, and the output of transistor Q3 is connected to the positive terminal of the VCC power supply. The input of the series circuit of resistors R4 and R13 is connected to the output of transistor Q3. Resistor R4 is connected to the VIN pin, and resistor R13 is grounded. Through the setting of the power supply switching circuit, when the EC5 terminal is not connected to the emergency power supply, but the clamp terminal is connected to the car battery, the system is powered by the car battery. Subsequently, as long as the EC5 terminal is connected to the emergency power supply, the grid-marked VIN pin will be at a high level, causing transistor Q3 to disconnect, and the system will automatically switch to emergency power supply.

[0025] As shown in Figure 7, the controller circuit board also includes a positive polarity identification circuit. This circuit consists of resistor R2, resistor R14, diode D4, transistor Q4, and transistor Q7. Resistor R2 is connected to the EC5 connector, using a wire group and positive / negative clamp circuit. The output of diode D4 is connected to the side of resistor R2. The drain output of transistor Q4 is connected to the input of diode D4. Resistor R14 is connected in parallel with transistor Q4 and is connected to an external 5V power supply. The input of transistor Q7 is connected to the gate of transistor Q4. The network identifier PoRt2 pin of the microcontroller U1 is connected to the side of transistor Q7. The other end of transistor Q7 is connected to… Ground; where, when the positive and negative clamps are accurately clamped to the side of the car battery, the wire group, clamps, car battery and positive connection identification circuit are connected; the microcontroller U1 sends a high-level signal to the transistor Q4 at regular intervals through the network identifier PoRt2, transmitting a 5V signal, which is then divided by the detection circuit of resistor R6 and resistor R12, and the analog value is sent to the network identifier DETE2 pin of the microcontroller U1 to identify whether the wire group, clamp is short-circuited, and whether the clamp is connected to the battery, and the result is displayed through the digital tube DT1 and LED1 and LED2. In this way, the short-circuiting of the clamp can be identified and corresponding protection can be provided through this positive connection identification circuit and the above power supply switching circuit.

[0026] As shown in Figure 8, the controller circuit board also includes a reverse connection identification circuit. This circuit consists of diode D3, resistor R3, transistor Q5, resistors R15, R17, and R19, diode D8, transistor Q8, resistor R18, transistor Q6, resistor R9, a dual-color LED1, and a Zener diode D7. One end of resistor R19 is connected to a 5V power supply, and the other end is connected to the negative terminal of diode D8. The negative terminal of diode D3 is connected between the output terminal and the positive clip of relay KT1, and the positive terminal of diode D3 is connected to the collector of transistor Q5. Resistor R3 is connected in parallel between the base and the positive terminal of transistor Q5. Between the emitter and collector, one end of resistor R15 is connected to the base of transistor Q5, and the other end is connected to the circuit ground. One end of resistor R17 is connected to the collector-emitter junction of transistor Q5, and the other end is connected to the cathode of diode D8. The anode of diode D8 is connected to the circuit ground. Additionally, the gate of transistor Q8 is connected to the cathode of diode D8, the source of transistor Q8 is connected to the circuit ground, and the drain of transistor Q8 is connected to the microcontroller U1 network identifier Port1. One end of resistor R18 is connected to the network identifier Port1, and the other end is connected to the gate of transistor Q6. The gate of transistor Q6 is connected to the circuit ground, and the drain of transistor Q6 is connected to the microcontroller U1 network identifier Port1. 1. Network identifier REVERSE: The negative terminal of Zener diode D7 is connected to the gate of transistor Q6, and the positive terminal of Zener diode D7 is connected to the circuit ground. One end of circuit R9 is connected to the microcontroller U1 (network identifier REVERSE), and the other end is connected to the negative terminal of the red LED of dual-color LED1. The positive terminal of the red LED of dual-color LED1 is connected to the 5V power supply, and the positive terminal of the green LED of dual-color LED1 is connected to the microcontroller U1 (network identifier LED_G). The negative terminal of the green LED of dual-color LED1 is connected to the circuit ground. When the positive and negative clips are positively connected to the car battery, grid identifier P... When PoRt1 is low and the REVERSE indicator is high, the red LED1 is off. If the positive and negative clamps are reversed with the car battery, PoRt1 immediately flips to high, forcing transistor Q2 in the KT1 relay driver circuit to turn off, thus disconnecting the relay and achieving protection. Simultaneously, the REVERSE indicator flips to low, causing the red LED1 indicator to light up as an alarm. The microcontroller U1, recognizing the low level via the REVERSE indicator, displays the status on the digital tube DT1. This reverse connection identification circuit can identify and protect against reversed connections between the clamps and the battery.

[0027] As shown in Figure 10, the controller circuit board also includes a current detection circuit and a temperature detection circuit. The current detection circuit consists of a sampling resistor, resistor R24, capacitor C9, and diode D9. The input of resistor R24 ​​is connected to the sampling resistor circuit terminal. Capacitor C9 and diode D9 are connected in parallel with resistor R24, and the other ends of capacitor C9 and diode D9 are grounded. The extension circuit of resistor R24, capacitor C9, and diode D9 is connected to the AD terminal of microcontroller U1. Different voltage values ​​are generated at the lower end of resistor R24 ​​under different current conditions through the sampling resistor (using a wire in this circuit), which supplies the current to MC. The microcontroller U1 processes the data and performs corresponding current detection operations. The temperature detection circuit consists of resistor R22, capacitor C8, and thermistor RT1. The input of resistor R22 is connected to the VCD terminal of the microcontroller U1. Capacitor C8 and thermistor RT1 are connected in parallel and in series with resistor R22. The other end of resistor R22, capacitor C8, and thermistor RT1 is connected to LED3. The voltage drop across the thermistor RT1 and resistor R22 is processed by the MCU. Utilizing the principle that the cathode of the thermistor decreases as the temperature rises, LED3 illuminates as an alarm when the temperature is abnormal.

[0028] Working Principle: As shown in Figure 11, after the positive and negative electrode clips are correctly connected to the car battery, the circuit collects the battery voltage through resistors R6 and R12. Pin 7 of the microcontroller U1 identifies this voltage and performs analog-to-digital conversion. The data is then transmitted to the digital tube to display the real-time battery voltage value (e.g., 12.3V) in digital form. Based on the displayed voltage value, the following judgments are made: Before starting the car, when the displayed value is between 12.2V and 12.8V, the battery is good; when the displayed value is less than 11.6V, the battery is slightly depleted, making it difficult to start the car; when the displayed value is less than 10V, the battery is severely depleted, and the car cannot be started; after starting the car, when the displayed value is between 13.4V and 14.8V, it is normal; when the displayed value is less than 13.4V or greater than 14.8V, it indicates an abnormality, and a professional should be consulted to check the fault.

[0029] As shown in Figures 9 and 12, when EC5 is connected to the emergency starter power supply, the power supply switching circuit will automatically cut off the battery power supply, and the system will be powered by the emergency starter power supply. Then, the voltage of the emergency starter power supply is collected by resistors R7 and R16 in the circuit. Pin 8 of the microcontroller U1 identifies this voltage and performs analog-to-digital conversion. The data is then transmitted to the digital tube to display the real-time voltage value of the battery (e.g., 15.6V) in digital form.

[0030] In addition, the digital tube can also display corresponding fault statuses. Specifically: when the circuit detects through pin 8 of the microcontroller U1 that the voltage value collected by resistors R6 and R17 is less than the set low-voltage threshold (e.g., 13.5V for four ternary lithium batteries and 9V for four lithium iron phosphate batteries), the circuit's low-voltage protection function is activated, and the digital tube alternately displays the real-time voltage value and the "E01" fault code; when the circuit detects through pin 7 of the microcontroller U1 that the voltage value collected by resistors R6 and R12 is 0V, it indicates that the clip is short-circuited, the circuit's short-circuit protection function is activated, and the digital tube displays the "E02" fault code; when the circuit detects a low-level signal through pin 10 of the microcontroller U1, it indicates that the positive and negative terminals of the clip and the battery are reversed, the circuit's reverse connection protection function is activated, and the digital tube displays the "E03" fault code; when the circuit detects through pin 5 of the microcontroller U1 that the voltage value is greater than or equal to the over-temperature threshold... When the voltage is below 0.34V, it indicates that the temperature on the circuit board is too high, the over-temperature protection function of the circuit is activated, and the digital tube displays the fault code "E04". When the circuit can detect a voltage value greater than or equal to the overcurrent threshold voltage (e.g., 0.234V) through pin 5 of the microcontroller U1, it indicates that the maximum current through the circuit is greater than or equal to 650A, the overcurrent protection circuit is activated, and the digital tube displays the fault code "E05". When the circuit starts timing through the internal timing program of the microcontroller U1, pressing button S1 to conduct relay KT1 starts timing. If there is a signal of pressing button S1 a second time within 30 seconds, it indicates that the timing has not exceeded 30 seconds, the button is invalid, and the digital tube displays the abnormal code "E06". When the circuit detects through pin 2 of the microcontroller U1 that the voltage value collected by resistors R3 and R9 is less than 11.5V, it indicates that the battery is low on power, and the digital tube displays the abnormal code "E07", which alternates with the car battery voltage.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An intelligent protective clip for an emergency starter power supply, characterized in that, The controller includes a main body, an internal circuit board, an EC5 connector and a digital display on one side, which shows the circuit status. The EC5 connector is used to connect to an emergency starter power supply. A positive and negative battery clamp are located on the other side of the controller. The circuit board includes a relay KT1 and a relay drive control circuit. It also includes a first voltage divider resistor module and a second voltage divider resistor module. Furthermore, the circuit board includes a power supply switching circuit, a positive connection identification circuit, a reverse connection identification circuit, a current detection circuit, and a temperature detection circuit. The power supply switching circuit, positive connection identification circuit, and reverse connection identification circuit are located in the EC5 connector, the relay, and the positive and negative clamp circuit. Similarly, the relay KT1 and the relay drive control circuit are connected in parallel in the EC5 connector, the wiring harness, and the positive and negative clamp circuit. The controller circuit board also includes a microcontroller U1, which is connected to the EC5 connector and uses a wire group and positive and negative clamp circuit.

2. The intelligent protective clip for an emergency starter power supply according to claim 1, characterized in that: The relay drive control circuit includes resistor R1, transistor Q1, resistor R5, diode D6, resistor R11, diode D5, transistor Q2, resistor R8, and resistor R10. The input of resistor R1 is connected to one end of relay KT1. The drain of transistor Q1 is connected to the other end of resistor R1. Resistor R11 is connected in series with the gate of transistor Q1. Resistor R5 and diode D6 are connected in parallel between resistor R11 and the gate of transistor Q1. Diode D5 is connected in parallel with relay KT1. The source of transistor Q2 is connected to the VCC power supply. The drain of transistor Q2 is connected to the negative terminal of diode D5. Resistor R8 is connected in parallel between the VCC power supply and the gate of transistor Q2. The input of resistor R10 is connected to resistor R8 and the gate of transistor Q2.

3. The intelligent protective clip for an emergency starter power supply according to claim 2, characterized in that: The first voltage divider resistor module includes resistor R7 and resistor R16. The input of resistor R7 is connected to the VCC power supply, and the input of resistor R16 is connected to the other end of resistor R7. The circuit between resistor R7 and resistor R16 is connected to the network identifier DETE1 pin of the module microcontroller U1.

4. The intelligent protective clip for an emergency starter power supply according to claim 3, characterized in that: The second voltage divider resistor module includes resistors R6 and R12. Resistors R6 and R12 are connected in series and the input is connected to the middle of the relay and positive clamp circuit. The circuit between resistors R7 and R16 is connected to the network identifier DETE2 pin of the module microcontroller U1.

5. The intelligent protective clip for an emergency starter power supply according to claim 4, characterized in that: The power supply switching circuit consists of diode D1, transistor Q3, resistor R4, and resistor R13. Diode D1 is connected to the EC5 connector, using a wire group and positive / negative clip circuit. The input of transistor Q3 is connected to the output of diode D1, and the output of transistor Q3 is connected to the positive terminal of VCC power supply. The input of the series circuit of resistors R4 and R13 is connected to the output of transistor Q3. Diode D2 is connected to the EC5 connector, using a wire group and positive / negative clip circuit. The output of diode D2 is connected to capacitor C1, which is a filter capacitor.

6. The intelligent protective clip for an emergency starter power supply according to claim 5, characterized in that: The positive polarity identification circuit consists of resistor R2, resistor R14, diode D4, transistor Q4, and transistor Q7. Resistor R2 is connected to the EC5 connector, using a wire group and positive / negative clamp circuit. The output of diode D4 is connected to the side of resistor R2. The drain output of transistor Q4 is connected to the positive terminal of diode D4. One end of resistor R14 is connected to the gate of transistor Q4, and the other end of resistor R14 is connected to a 5V power supply. The collector of transistor Q7 is connected to the gate of transistor Q4. The network identifier Port2 pin of microcontroller U1 is connected to the base of transistor Q7.

7. The intelligent protective clip for an emergency starter power supply according to claim 6, characterized in that: The reverse connection identification circuit consists of diode D3, resistor R3, transistor Q5, resistor R15, resistor R17, resistor R19, diode D8, transistor Q8, resistor R18, transistor Q6, resistor R9, bicolor LED1, and Zener diode D7. One end of resistor R19 is connected to a 5V power supply, and the other end is connected to the negative terminal of diode D8. The negative terminal of diode D3 is connected between the output terminal of relay KT1 and the positive clamp. The positive terminal of diode D3 is connected to the collector of transistor Q5. Resistor R3 is connected in parallel between the base and emitter of transistor Q5. One end of resistor R15 is connected to the base of transistor Q5. One end of resistor R17 is connected to the collector and emitter of transistor Q5, and the other end is connected to the negative terminal of diode D8.

8. The intelligent protective clip for an emergency starter power supply according to claim 7, characterized in that: The gate of transistor Q8 is connected to the negative terminal of diode D8, and the drain of transistor Q8 is connected to the network identifier Port1 of microcontroller U1. One end of resistor R18 is connected to the network identifier Port1, and the other end is connected to the gate of transistor Q6. The drain of transistor Q6 is connected to the network identifier REVERSE of microcontroller U1. The negative terminal of Zener diode D7 is connected to the gate of transistor Q6. One end of circuit R9 is connected to the network identifier REVERSE of microcontroller U1, and the other end is connected to the negative terminal of the red LED of dual-color LED1. The positive terminal of the red LED of dual-color LED1 is connected to a 5V power supply, and the positive terminal of the green LED of dual-color LED1 is connected to the network identifier LED_G of microcontroller U1.

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