An emergency start box component

Abstract

An emergency start box assembly includes a box body, an interface assembly mounted on the box body, a control module, and a temperature sensor. The interface assembly includes positive and negative terminals for the battery, positive and negative terminals for the car battery, and a temperature monitoring interface. The control module is integrated on a circuit board assembly and includes a microcontroller and a relay. The temperature sensor is connected to the temperature monitoring interface for real-time acquisition of the surface temperature of the starter battery. The relay controls the on / off state of the battery main circuit. The microcontroller detects the reverse connection state of the battery's positive and negative terminals through a voltage divider circuit composed of voltage divider resistors and acquires temperature sensor data through the temperature monitoring interface. The voltage divider circuit is connected between the battery's positive and negative terminals and the ADC pin of the microcontroller. The microcontroller controls the on / off state of the relay based on the detected reverse connection, short circuit, and battery temperature signals, enabling effective monitoring and protection of the battery and improving the safety of the emergency start process.

Description

Technical Field

[0001] This utility model relates to emergency start technology, and in particular to an emergency start box assembly. Background Technology

[0002] Currently, most portable car jump starters on the market have built-in high-discharge-rate lithium batteries that connect to the positive and negative terminals of the car battery via jump start clips, providing starting power when the car is out of power. However, in pursuit of portability, these products are usually designed to be small in size and lightweight, with relatively small built-in battery capacity. During the car starting process, the instantaneous current often exceeds 300A, and the battery is prone to overheating during continuous use, posing a safety hazard.

[0003] Existing emergency start clips generally only have two interfaces, positive and negative, lacking battery temperature monitoring capabilities. This makes it impossible to monitor battery heat in real time and adequately address the safety risks posed by high temperatures. Furthermore, most products on the market lack robust protection mechanisms against abnormal conditions such as reverse polarity and short circuits, making them susceptible to damage or even accidents due to operational errors or circuit malfunctions. Therefore, there is an urgent need for an emergency start component that can achieve real-time battery temperature monitoring and possesses multiple safety protection functions.

[0004] It should be noted that the information disclosed in the background section above is only for understanding the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] The main objective of this invention is to overcome the deficiencies in the aforementioned background technology and provide an emergency start box assembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An emergency start box assembly includes a box body, an interface assembly mounted on the box body, a control module, and a temperature sensor. The interface assembly includes positive and negative terminals for a battery, positive and negative terminals for a car battery, and a temperature monitoring interface. The control module is integrated on a circuit board assembly and includes a microcontroller and a relay. The temperature sensor is connected to the temperature monitoring interface and is used to collect the surface temperature of the starter battery in real time. The relay is used to control the on / off state of the battery main circuit. The microcontroller detects the reverse connection state of the battery's positive and negative terminals through a voltage divider circuit composed of voltage divider resistors and acquires temperature sensor data through the temperature monitoring interface. The voltage divider circuit is connected between the battery's positive and negative terminals and the ADC pin of the microcontroller. The microcontroller controls the on / off state of the relay based on the detected reverse connection, short circuit, and battery temperature signals.

[0008] Furthermore, it also includes a power input and voltage regulation module circuit connected to the positive and negative terminals of the battery. The power input and voltage regulation module circuit has a Schottky diode connected in series at the input terminal to block reverse current.

[0009] Furthermore, the temperature monitoring interface acquires temperature data through an NTC thermistor: one end of the NTC thermistor is connected to a microcontroller pin, and the other end is grounded.

[0010] Furthermore, it also includes an audible and visual alarm unit, which is used to trigger the audible and visual alarm under the control of a microcontroller.

[0011] Furthermore, it also includes a short-circuit protection circuit, which is used to monitor the impedance between the positive and negative clamps in real time to trigger short-circuit protection.

[0012] Furthermore, the box body is made of a one-piece injection-molded plastic shell, and the shell is fixed with clips, flexible wires, temperature sensor interfaces and circuit board assemblies by mechanical structure to form an integrated impact-resistant structure.

[0013] Furthermore, it also includes a battery power detection circuit, which forms a low-pass filter network through the voltage divider resistor and filter capacitor of the voltage divider circuit, and inputs the battery voltage signal to the microcontroller ADC pin.

[0014] Furthermore, it also includes a three-in-one circuit of precision differential amplification, dynamic limiting protection and power drive, with an integrated operational amplifier to realize differential amplification and a parallel Zener diode to clamp the signal voltage within the threshold voltage to prevent overvoltage damage.

[0015] Furthermore, it also includes a switch control and drive module, which includes a transistor for driving the relay to control the on / off state of the main circuit, and a freewheeling diode for eliminating the back electromotive force of the relay coil.

[0016] This utility model has the following beneficial effects:

[0017] An independent temperature monitoring interface is added to upgrade safety monitoring: By connecting a temperature sensor through the independent temperature monitoring interface, the surface temperature of the starter battery can be collected in real time. With the help of the microcontroller to process the temperature data, protection can be triggered in time when the temperature exceeds the preset threshold, which solves the problem that traditional emergency starter products have no temperature monitoring and are prone to safety hazards due to high temperature.

[0018] Multiple anomaly protections enhance reliability: The microcontroller can detect abnormal states such as reverse polarity, short circuit, and high temperature. Once an anomaly is triggered, it will cut off the main circuit through a relay and activate an audible and visual alarm. This not only prevents abnormal states from damaging components and related equipment, but also prompts users to handle the situation in a timely manner through alarms, thus enhancing safety during use.

[0019] Intelligent on / off control optimizes the startup process: The microcontroller intelligently controls the relay on / off based on the connection status. When the connection is normal, it conducts power to ensure startup, and when there is an abnormality, it cuts off the circuit to terminate startup. This realizes automated and intelligent management of the startup process and improves the convenience and stability of emergency startup operations.

[0020] Furthermore, a dual reverse connection protection mechanism is designed. The diode quickly blocks the reverse current, and the voltage divider resistor of the battery power detection circuit monitors the abnormal voltage. It can cut off the main circuit and trigger an alarm, which not only avoids the risk of single protection failure, but also simplifies the structure and reduces costs through component reuse, thereby improving the safety and reliability of reverse connection scenarios.

[0021] Other beneficial effects of the embodiments of this utility model will be further described below. Attached Figure Description

[0022] Figure 1A This is a schematic diagram of the overall structure of the smart box according to an embodiment of the present utility model.

[0023] Figure 1B This is a schematic diagram of the overall structure of the smart box according to an embodiment of the present utility model. Figure 2 .

[0024] Figure 2 This is a control logic diagram of an embodiment of the present invention.

[0025] Figure 3 This is a circuit diagram of the power input and voltage regulation module according to an embodiment of the present invention.

[0026] Figure 4 This is a circuit diagram of the temperature detection and signal conversion module according to an embodiment of the present invention.

[0027] Figure 5 This is a circuit diagram for battery power detection according to an embodiment of the present invention.

[0028] Figure 6 This is a circuit diagram of a precision differential amplifier, dynamic limiting protection and power drive integrated circuit according to an embodiment of the present invention.

[0029] Figure 7 This is a circuit diagram of an LED indicator light according to an embodiment of the present invention.

[0030] Figure 8 This is a circuit diagram of a buzzer alarm according to an embodiment of the present invention.

[0031] Figure 9 This is a circuit diagram of the switch control and drive module according to an embodiment of the present invention.

[0032] Figure 10 This is a temperature detection circuit diagram of an embodiment of the present invention. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of this utility model.

[0034] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be used for fixing, coupling, or communication.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] See Figures 1A to 10This utility model embodiment provides an emergency starter box assembly, including a box body 1, an interface assembly mounted on the box body 1, a control module, and a temperature sensor. The interface assembly includes a battery positive terminal interface 3, a battery negative terminal interface 4, a car battery positive and negative terminal interface, and a temperature monitoring interface 10. The battery positive terminal interface 3 and the battery negative terminal interface 4 are connected to a starter battery 5. The car battery positive and negative terminal interfaces are connected to the car battery via a flexible cable 6 and positive and negative terminal clips 7 and 8 connected to the ends of the flexible cable 6. The control module is integrated on a circuit board assembly and includes a microcontroller and a relay. The temperature sensor is connected to the temperature monitoring interface 9 of the starter battery 5 via the temperature monitoring interface 10 in a plug-in manner for real-time acquisition of the starter battery surface temperature. The relay is used to control the on / off state of the battery main circuit. The microcontroller detects the reverse connection state of the battery positive and negative terminals through a voltage divider circuit composed of voltage divider resistors and obtains temperature sensor data through a temperature monitoring interface. The voltage divider circuit is connected between the battery positive and negative terminals and the ADC pin of the microcontroller. The microcontroller controls the on / off state of the relay based on the detected reverse connection, short circuit and battery temperature signals.

[0038] During operation, the microcontroller detects the reverse connection status of the battery's positive and negative terminals through a voltage divider circuit composed of voltage divider resistors, and acquires temperature sensor data through a temperature monitoring interface. The voltage divider circuit is connected between the battery's positive and negative terminals and the microcontroller's ADC pin. When the positive and negative terminals are reversed, an abnormal voltage is generated, and the microcontroller determines the reverse connection status through the digital signal converted from the abnormal voltage. When a reverse connection, short circuit, or battery temperature exceeding a preset threshold is detected, the microcontroller controls a relay to cut off the main circuit; when the connection status is normal, the microcontroller controls a relay to turn on the power supply.

[0039] In some embodiments, a power input and voltage regulation module circuit connected to the positive and negative terminals of the battery is also included. The power input and voltage regulation module circuit has a Schottky diode connected in series at its input terminal for reverse current blocking.

[0040] In some embodiments, the temperature monitoring interface acquires temperature through an NTC thermistor: one end of the NTC thermistor is connected to a microcontroller pin, and the other end is grounded.

[0041] In some embodiments, an audible and visual alarm unit is further included, which is controlled by a microcontroller to trigger an audible and visual alarm.

[0042] In some embodiments, a short-circuit protection circuit is also included for real-time monitoring of the impedance between the positive and negative clamps to trigger short-circuit protection.

[0043] In some embodiments, the housing is made of a one-piece injection-molded plastic shell (such as a rigid ABS shell), and the shell is fixed with a mechanical structure to the clip wire, temperature sensor interface and circuit board assembly to form an integrated impact-resistant structure.

[0044] In some embodiments, a battery power detection circuit is also included, wherein the battery power detection circuit forms a low-pass filter network with the voltage divider resistor and the filter capacitor of the voltage divider circuit, and inputs the battery voltage signal to the microcontroller ADC pin.

[0045] In some embodiments, a three-in-one circuit combining precision differential amplification, dynamic limiting protection, and power drive is also included. An integrated operational amplifier enables differential amplification, and a parallel Zener diode clamps the signal voltage to within a threshold voltage to prevent overvoltage damage.

[0046] In some embodiments, the system further includes a switch control and drive module, which includes a transistor for driving the relay to control the on / off state of the main circuit and a freewheeling diode for eliminating the back electromotive force of the relay coil.

[0047] See Figures 3 to 10 The circuit board assembly integrates the following cooperating circuit modules:

[0048] Power input and voltage regulation module ( Figure 3 The input terminal is connected in series with a Schottky diode D1 and a fuse resistor R22, and the output is a stable 5V power supply through a voltage regulator U2. The Schottky diode D1 provides hardware reverse connection protection.

[0049] Temperature detection module ( Figure 4 , Figure 10 ): Includes an NTC thermistor R11 in series with an isolation resistor, which is connected to the microcontroller's ADC pin via a voltage divider point for real-time acquisition of temperature signals;

[0050] Battery power detection circuit module ( Figure 5 The low-pass filter network, consisting of voltage divider resistors R19 / R20 and filter capacitor C4, inputs the battery voltage to the microcontroller's ADC pin to calculate the battery level.

[0051] Signal conditioning module ( Figure 6 This circuit combines precision differential amplification, dynamic limiting protection, and power drive. The integrated operational amplifier U1 enables differential amplification, while the parallel Zener diodes D2 and D3 clamp the signal voltage to within 5.8V to prevent overvoltage damage.

[0052] Switch control and drive module ( Figure 9 The microcontroller drives the relay RL1 through the transistor Q3 to control the on / off of the main circuit, and uses the freewheeling diode D4 to eliminate the reverse electromotive force of the relay coil.

[0053] Audible and visual alarm module ( Figure 8 ):

[0054] Buzzer circuit: The buzzer is driven by the microcontroller pin BBEP via transistor Q1;

[0055] LED indicator circuit: The dual-color LED controls the traffic light status via the microcontroller pins GD / RD;

[0056] The power supply module supplies power to all modules; the output terminals of the temperature detection module and the voltage detection module are connected to the signal conditioning module, and the signal is input to the microcontroller after conditioning; the microcontroller controls the execution module to switch the main circuit on and off according to the detection results, and triggers the audible and visual alarm of the alarm module; the fuse resistor, Schottky diode and dynamic clamping circuit constitute a hardware-level collaborative protection mechanism, which works with the microcontroller to achieve rapid fault response.

[0057] This invention significantly improves the safety and reliability of portable car emergency start products by integrating real-time temperature monitoring and multiple safety protection mechanisms. Addressing the issue of traditional products lacking a temperature monitoring interface and thus unable to handle battery overheating risks, this invention adds an independent temperature monitoring interface and uses an NTC thermistor to collect the battery surface temperature in real time, combined with temperature threshold protection to trigger the main circuit cutoff. To address the deficiencies in reverse polarity connection and insufficient short-circuit protection, an innovative dual protection mechanism is designed, using a series Schottky diode to block reverse current and a voltage divider circuit to detect abnormal voltage. This, combined with a fusible resistor and a dynamic clamping circuit (ZnD clamping), forms a synergistic protection system. Simultaneously, a multi-mode fault warning is achieved through an audible and visual alarm unit (transistor-driven buzzer and dual-color LED), and a microcontroller intelligently controls the relay to switch the main circuit on and off. An integrated impact-resistant structure is achieved within a compact, rigid ABS housing, effectively solving the overheating risk of small-volume lithium batteries under high-current discharge (over 300A) conditions and the safety hazards caused by operational errors.

[0058] The following further describes specific embodiments of this utility model.

[0059] Figure 1A and Figure 1B This is a schematic diagram of the overall structure of the smart box according to an embodiment of the present invention, showing the connection relationship between the start-up battery, battery temperature probe, battery temperature detection interface, flexible wire, positive and negative terminal clips, smart box and each interface. Figure 2 This is a control logic diagram of an embodiment of the present invention, illustrating the connection method between the smart box (MCU integrated circuit) and the starter battery and car battery, as well as the control flow under different states such as reverse polarity / short circuit, battery overheating, and correct connection.

[0060] The overall structure of the emergency start box assembly is as follows: Figure 1A and Figure 1BAs shown, the interface component primarily connects to the starter battery and the car battery. The interface component includes positive and negative terminals for the starter battery, and positive and negative terminals for the car battery connected via clips. An independent temperature monitoring interface connects to a temperature sensor via a plug-in connection to collect real-time data on the starter battery's surface temperature. Its control logic is as follows: Figure 2 As shown, the control module is integrated on the circuit board assembly. The core is a microcontroller (MCU) and a relay. The MCU acts as the control center, which can receive signals transmitted from various interfaces and control the relay to achieve the on / off control of the battery main circuit.

[0061] Figure 3 This is a power input and voltage regulation module circuit according to an embodiment of the present invention. The power input and voltage regulation module circuit stabilizes the external input voltage to 5V, providing a clean power supply to the system. For example... Figure 3 As shown, a Schottky diode SS14 is connected in series at the input terminal to form reverse connection protection at the hardware level. When the positive and negative terminals are reversed, the Schottky diode will reverse to block the current, thereby protecting the subsequent 78L05 voltage regulator circuit and MCU; at the same time, through as... Figure 5 The voltage divider circuit formed by resistors R19 and R20 in the battery power detection circuit is connected to the ADC pin of the MCU. When the clamp is reverse-connected to a car battery with a voltage higher than 1V, the MCU detects the abnormal voltage and triggers the reverse connection protection. At this time, the red light stays on, the buzzer continuously sounds an alarm, and the relay is controlled to cut off the main circuit until the fault is cleared. The significant advantage of this design is that it forms a dual reverse connection protection mechanism through two-layer collaborative protection: the Schottky diode can quickly reverse-cut off to block the current during reverse connection, providing immediate physical protection for the subsequent circuits; at the same time, the voltage divider circuit formed by reusing resistors R19 and R20 in the battery power detection circuit realizes reverse connection monitoring. When an abnormal reverse connection voltage is detected, it can not only strengthen the protection by cutting off the main circuit through the relay, but also trigger an audible and visual alarm to alert the user. The circuit design avoids the risk of single protection failure, simplifies the circuit structure through component reuse, reduces costs, and significantly improves the safety and reliability in reverse connection scenarios.

[0062] Figure 4 This embodiment of the present invention includes a temperature detection and signal conversion module circuit, which monitors the temperature via an NTC and converts it into a voltage signal readable by the MCU. The circuit principle is as follows: Figure 4As shown, temperature monitoring is achieved through an NTC thermistor. One end of the NTC thermistor is connected to the MCU pin, and the other end is grounded. A 10KΩ resistor is connected in series between the 5V power supply and the MCU pin. When the battery temperature changes, the resistance of the NTC thermistor changes, causing a potential change at the voltage divider point of the 10KΩ resistor. The MCU reads this potential change to calculate the PCB board temperature. When the temperature exceeds a preset threshold of 65℃, the MCU controls the buzzer to emit an intermittent alarm sound, switches the LED to flash red, and disconnects the relay to cut off the main circuit power supply until the temperature returns to normal.

[0063] The circuit board assembly also integrates a battery power detection circuit, such as... Figure 5 As shown, R19 is a voltage divider resistor, and resistor R20 and capacitor C4 form a low-pass filter circuit. The MCU chip detects the junction voltage of R19 and R20 through its ADC pin, and the MCU processes the data to realize the battery level detection function. This circuit uses R19, R20 (voltage divider resistors) and capacitor C4 to form a low-pass filter network, inputting the battery voltage signal to the MCU's ADC pin. After analog-to-digital conversion, the remaining battery level is calculated. Simultaneously, the circuit board components employ a collaborative protection mechanism: fuse R22 and SS14 Schottky diode are connected in series in the main input circuit, which, combined with the MCU's fast shutdown algorithm, accelerates the short-circuit response speed.

[0064] Figure 6 This embodiment of the invention is a three-in-one circuit combining precision differential amplification, dynamic limiting protection, and power drive. Its core functions include weak signal extraction, overvoltage protection, current drive, and capacitor filtering. (U1-11 converts the current into a voltage signal, U1-9 amplifies the MCU voltage for reading, and parallel Zener diodes D2 and D3 clamp the voltage to 5.8V for stable protection of the ADC input from overvoltage.) This forms a dynamic clamping circuit to prevent damage to subsequent circuits due to overvoltage.

[0065] The audible and visual alarm unit consists of a buzzer circuit and a dual-color LED circuit, such as... Figure 7 and Figure 8 As shown. Figure 7 This is an embodiment of the LED indicator circuit of this utility model. The LED is driven to turn on and off by a 5V power supply. The LED indicator circuit is a dual-color LED circuit. The GD and RD pins are connected to the MCU. When GD outputs a low level, the green light is on, indicating normal power supply. When RD outputs a low level, the red light is on, indicating a fault condition. Figure 8 This is a buzzer alarm circuit according to an embodiment of the present invention. The positive terminal of the buzzer is connected to the positive terminal of the power supply. The MCU is connected to the base of transistor Q1 through pin 6, thereby controlling the alarm frequency of the buzzer. In standby mode, the MCU monitors the impedance between the positive and negative terminals in real time. If a short circuit is detected, it will immediately trigger a continuous red light and a buzzer alarm with one long and two short beeps, and keep the relay in the open state until the short circuit fault is cleared.

[0066] Figure 9 In this embodiment of the present invention, the switch control and drive module circuit uses a transistor to drive a relay to control the on / off state of a high-power load. The connection between the SS14 diode, relay RL1, MOSFET Q3, and the MCU is used to implement main circuit on / off control and related protection. The SS14 diode provides freewheeling protection, eliminating the back electromotive force when the relay coil is de-energized. The RL1 relay acts as a physical switch, directly controlling the on / off state of the battery main circuit; its operation is driven by the MOSFET Q3 via a control signal from pin 3 of the MCU.

[0067] Figure 10 This is a battery temperature detection circuit according to an embodiment of the present invention. Figure 10 The diagram illustrates the connection between the temperature detection circuit and the microcontroller U1. By utilizing the resistance change of the NTC thermistor NTC2 at different temperatures, the temperature signal is converted into a voltage signal and input to the pin of the microcontroller, thereby realizing the detection and processing of battery temperature. Figure 10 It also includes some auxiliary components such as capacitor C3, resistors R18 and R21, for circuit stability and signal processing.

[0068] The entire circuit board assembly and all interfaces are encapsulated in a one-piece injection-molded plastic shell. The shell is secured to the clip wires, temperature sensor connectors, and circuit board assembly by a mechanical structure, forming an integrated impact-resistant structure that is both lightweight and easy to process.

[0069] The above description, in conjunction with specific / preferred embodiments, provides a further detailed explanation of the present invention and should not be construed as limiting the specific implementation of the present invention to these descriptions. For those skilled in the art, various substitutions or modifications can be made to these described embodiments without departing from the concept of the present invention, and all such substitutions or modifications should be considered within the protection scope of the present invention. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein without departing from the scope of protection of the patent application.

Claims

1. An emergency start box assembly, characterized by, The device includes a housing, an interface assembly mounted on the housing, a control module, and a temperature sensor. The interface assembly includes positive and negative terminals for the battery, positive and negative terminals for the car battery, and a temperature monitoring interface. The control module is integrated on a circuit board assembly and includes a microcontroller and a relay. The temperature sensor is connected to the temperature monitoring interface and is used to collect the surface temperature of the starting battery in real time. The relay is used to control the on / off state of the battery main circuit. The microcontroller detects the reverse connection state of the battery's positive and negative terminals through a voltage divider circuit composed of voltage divider resistors and obtains temperature sensor data through the temperature monitoring interface. The voltage divider circuit is connected between the battery's positive and negative terminals and the ADC pin of the microcontroller. The microcontroller controls the on / off state of the relay based on the detected reverse connection, short circuit, and battery temperature signals.

2. The emergency start box assembly of claim 1, wherein, It also includes a power input and voltage regulation module circuit connected to the positive and negative terminals of the battery. The power input and voltage regulation module circuit has a Schottky diode connected in series at the input terminal to block reverse current.

3. The emergency start box assembly of claim 1, wherein, The temperature monitoring interface acquires temperature data through an NTC thermistor: one end of the NTC thermistor is connected to a microcontroller pin, and the other end is grounded.

4. The emergency start box assembly of claim 1, wherein, It also includes an audible and visual alarm unit, which is used to trigger the audible and visual alarm under the control of a microcontroller.

5. The emergency start box assembly of claim 1, wherein, It also includes a short-circuit protection circuit, which is used to monitor the impedance between the positive and negative clamps in real time to trigger short-circuit protection.

6. The emergency start box assembly of claim 1, wherein, The box body is made of a one-piece injection molded plastic shell. The shell is fixed with clips, flexible wires, temperature sensor interfaces and circuit board assemblies by mechanical structure to form an integrated impact-resistant structure.

7. The emergency start box assembly of claim 1, wherein, It also includes a battery power detection circuit, which forms a low-pass filter network with the voltage divider resistor and the filter capacitor of the voltage divider circuit to input the battery voltage signal to the microcontroller ADC pin.

8. The emergency start box assembly of claim 1, wherein, It also includes a precision differential amplifier, dynamic limiting protection and power drive three-in-one circuit, with an integrated operational amplifier to realize differential amplification and a parallel Zener diode to clamp the signal voltage within the threshold voltage to prevent overvoltage damage.

9. The emergency start box assembly of claim 1, wherein, It also includes a switch control and drive module, which includes a transistor for driving the relay to control the on / off state of the main circuit, and a freewheeling diode for eliminating the back electromotive force of the relay coil.

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