Uninterruptible power starting power supply protection circuit and protection method

Abstract

The invention belongs to the technical field of power supply protection, and particularly relates to an uninterruptible power starting power supply protection circuit and a protection method, the uninterruptible power starting power supply protection circuit comprises a main control unit, an acquisition unit, a voltage unit, a power switch and a bypass current limiting circuit; wherein the bypass current-limiting circuit comprises a bypass current-limiting topological circuit I or a bypass current-limiting topological circuit II, and through the specific circuit structure of the bypass current-limiting topological circuit, when the system is abnormal, such as battery voltage, temperature and the like, the alarm main switches Q1 and Q2 must be closed, low-current discharge is realized; and vehicle power failure or charging failure of a starting power supply can be effectively avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of power supply protection, and more specifically, relates to an uninterruptible power supply protection circuit and a protection method. Background Art

[0002] The battery management system (BMS) is an electronic device specifically used to supervise and manage battery packs. Its main functions include parameter acquisition and monitoring, safety protection, intelligent charge and discharge control, status monitoring and charge evaluation, etc. BMS collects battery voltage, current, temperature, state of charge (SOC) and other parameters, calculates and controls the battery charge and discharge process, and achieves battery protection and performance improvement. Specific functions include: parameter acquisition and monitoring: monitoring battery voltage, current, temperature and other parameters to ensure that the battery operates within a safe range, safety protection: preventing battery overcharge, over discharge and short circuit, protecting the battery from damage, intelligent charge and discharge control: adjusting the charge and discharge strategy according to the battery status to optimize battery efficiency, status monitoring and charge evaluation: real-time monitoring of the battery health and remaining power, and providing accurate battery usage information. The battery management system (BMS) of lithium-ion automotive starter batteries evaluates the battery status by real-time monitoring of key parameters such as battery voltage, current, temperature, etc., and adopts fault diagnosis algorithms to ensure the safe, stable and efficient operation of the battery pack.

[0003] ‌Car starting power supply‌, also known as car emergency starting power supply or car jumper power supply, is a portable power supply device, which is mainly used to provide emergency starting capability when the car cannot be started due to low battery or other reasons; existing lithium-ion car starting power supplies mostly use universal BMS solutions. When the starting battery alarm sounds, the battery management system (BMS) will cut off the battery output, the whole car will be powered off, and the vehicle's anti-theft system, alarm, lights, remote control and other equipment will not work properly. Summary of the invention

[0004] The purpose of the present invention is to provide an uninterrupted power supply protection circuit and protection method for the battery management system of the starting battery, which can provide a small current discharge circuit under the protection state of the starting battery to ensure the power supply of the vehicle host, aiming to improve the performance, safety and stability of the battery pack.

[0005] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: a non-interrupted starting power supply protection circuit, the protection circuit is used to start the battery management system BMS, specifically including: a bypass current limiting circuit, the bypass current limiting circuit includes bypass current limiting topology circuit one or bypass current limiting topology circuit two.

[0006] Preferably, the bypass current limiting topology circuit 1 includes a diode DS1, a diode DS2, an inductor LS1, a MOS tube QS1, a MOS tube QS2, a MOS tube QS3, and a MOS tube QS4; wherein the anode of the diode DS1 is connected to the QS2 and the LS1 respectively, the cathode of the diode DS1 is connected to the anode of the starting power supply, the anode of the DS2 is connected to the inductor LS1 and the QS1 respectively, the input stage of the MOS tube QS1 is connected to the diode DS2 and the inductor LS1 respectively, the output stage of the MOS tube QS1 is connected to the cathode of the starting power supply and the MOS tube QS4 via a current sensor, and the G pole of the MOS tube QS2 is connected to the pulse control The MOS tube QS2 is connected to the diode DS1 and the inductor LS1 respectively, the output stage of the MOS tube QS2 is connected to the negative electrode of the starting power supply via the current sensor, and the G pole of the MOS tube QS2 is connected to the pulse controller (PWM); the input stage of the MOS tube QS3 is connected to the negative electrode of the starting power supply and is connected to the MOS tube QS2 via the current sensor, the output stage of the MOS tube QS3 is connected to the MOS tube QS4, the input stage of the MOS tube QS4 is connected to the negative electrode of the starting power supply and is connected to the MOS tube QS1 via the current sensor, and the output stage of the MOS tube QS4 is connected to the MOS tube QS3.

[0007] Preferably, the bypass current limiting topology circuit 2 includes a diode DS3, a diode DS4, a diode DS5, a diode DS6, an inductor LS2, an inductor LS3, a MOS transistor QS5, a MOS transistor QS6, a MOS transistor QS7, and a MOS transistor QS8; wherein the anode of the diode DS3 is connected to the QS6 and the LS3 respectively, the cathode of the diode DS1 is connected to the anode of the startup power supply, the anode of the diode DS4 is connected to the QS5 and the LS2 respectively, the cathode of the diode DS1 is connected to the anode of the startup power supply, the anode of the diode DS5 is connected to the cathode of the startup power supply, the cathode of the diode DS5 is connected to the diode DS4 and the MOS transistor QS5 respectively through the inductor LS2, the anode of the diode DS6 is connected to the cathode of the startup power supply, the cathode of the diode DS5 is connected to the diode DS3 and the MOS transistor QS6 respectively through the inductor LS3, and the output stage of the MOS transistor QS1 is connected to the startup power supply through a current sensor. The negative electrode of the MOS tube QS6 is connected to the G electrode of the MOS tube QS6, the input stage of the MOS tube QS6 is connected to the diode DS3 and the inductor LS3 respectively, the output stage of the MOS tube QS6 is connected to the negative electrode of the starting power supply via the current sensor, and the G electrode of the MOS tube QS6 is connected to the pulse controller (PWM); the input stage of the MOS tube QS5 is connected to the inductor LS2 and the diode DS4, the output stage of the MOS tube QS5 is connected to the negative electrode of the starting power supply via the current sensor, and the G electrode of the MOS tube QS5 is connected to the pulse controller (PWM); the input stage of the MOS tube QS7 is connected to the negative electrode of the starting power supply and is connected to the MOS tube QS6 via the current sensor, the output stage of the MOS tube QS7 is connected to the MOS tube QS8, the input stage of the MOS tube QS8 is connected to the negative electrode of the starting power supply and is connected to the MOS tube QS5 via the current sensor, and the output stage of the MOS tube QS8 is connected to the MOS tube QS7.

[0008] Preferably, the BMS system includes: a main control unit (MCU), an acquisition unit (AFE), a voltage unit (Buck DC / DC), a power switch (MOSFET) and a bypass current limiting unit; wherein the main control unit (MCU) is connected to the acquisition unit (AFE) and the voltage unit (Buck DC / DC), the acquisition unit (AFE) is connected to the power switch (MOSFET), the voltage unit (Buck DC / DC) and the main control unit (MCU), the voltage unit (Buck DC / DC) is connected to the acquisition unit (AFE) and the main control unit (MCU), and the power switch (MOSFET) is connected to the acquisition unit (AFE) and the bypass current limiting unit.

[0009] Preferably, the main control unit (MCU) includes: a CAN module, a GPIO interface, and an I2C communication interface.

[0010] Preferably, the acquisition unit (AFE) includes: a basic protection logic unit, a power management module, a voltage measurement module, a temperature measurement module, a current measurement module, a MOSFET driving module, a communication interface module, and a load detection module.

[0011] Preferably, the basic protection logic unit is used to control the protection function of the starting power supply, the voltage measurement module is used to implement the power management module for managing the starting power supply, the voltage measurement module is used to implement voltage monitoring of the starting power supply and to implement balanced driving of the starting power supply, the temperature measurement module is used to implement temperature measurement of the starting power supply, the current measurement module is used to implement current monitoring of the starting power supply, the MOSFET drive module is used to drive the power switch (MOSFET), the communication interface module is used to implement two-way communication with the MCU module, and the load detection module is used to implement detection of connected loads and charging detection.

[0012] According to another aspect of the present invention, a protection method for a non-interruptible starting power supply protection circuit is provided. The method adopts the non-interruptible starting power supply protection circuit to achieve non-interruptible protection of the starting power supply.

[0013] According to another aspect of the present invention, there is provided an electronic device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the various steps of the protection method of the non-interruption startup power supply protection circuit are implemented.

[0014] According to another aspect of the present invention, a computer-readable storage medium is provided, on which a data processing program is stored, and the data processing program is executed by a processor to perform the various steps of the above-mentioned protection method for the non-interruptible startup power supply protection circuit.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a non-stop power-on starting power supply protection circuit and a protection method. The non-stop power-on starting power supply protection circuit comprises: a main control unit, a collection unit, a voltage unit, a power switch and a bypass current limiting circuit; wherein the bypass current limiting circuit comprises a bypass current limiting topology circuit 1 and a bypass current limiting topology circuit 2. Through the specific circuit structures of the two bypass current limiting topology circuits, when an abnormality occurs in the system, such as when the battery voltage, temperature, etc. alarm main switches Q1, Q2 must be closed to achieve small current discharge, which can effectively prevent the vehicle from being powered off or the starting power supply from being unable to charge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] Figure 1 A circuit structure diagram of a vehicle BMS system with an uninterrupted starting power supply protection circuit provided by an embodiment of the present invention; Figure 2 A circuit structure diagram of the bypass current limiting topology 1 provided in an embodiment of the present invention; Figure 3 A circuit structure diagram of the bypass current limiting topology 2 provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0020] Figure 1 The circuit structure diagram of the vehicle BMS system according to the present invention is shown as follows: Figure 1As shown, the circuit of the vehicle BMS system with an uninterrupted starting power supply protection circuit is added, specifically including: A main control unit (MCU), an acquisition unit (AFE), a voltage unit (Buck DC / DC), a power switch (MOSFET) and a bypass current limiting circuit; wherein the main control unit (MCU) is connected to the acquisition unit (AFE) and the voltage unit (Buck DC / DC), the acquisition unit (AFE) is connected to the power switch (MOSFET), the voltage unit (Buck DC / DC) and the main control unit (MCU), the voltage unit (Buck DC / DC) is connected to the acquisition unit (AFE) and the main control unit (MCU), and the power switch (MOSFET) is connected to the acquisition unit (AFE) and the bypass current limiting circuit; Wherein, the main control unit (MCU) includes: CAN module, GPIO interface, I2C communication interface; The CAN module is an intelligent electronic control device used to realize data communication between various electronic control devices of the whole vehicle. It adopts a 16-bit microcontroller, supports CAN2.0A and CAN2.0B protocols, and is developed according to the SAE J1939 standard. The CAN module can realize the communication of high-speed and low-speed CAN bus networks, has good sealing, and is suitable for various harsh environments. The CAN module is widely used in the fields of automobiles, industrial control and communications. It has the characteristics of high reliability, real-time performance and high flexibility, and is suitable for distributed real-time control occasions with high security levels. In automobile design, the CAN module is the key technology for realizing the regional network control system of vehicle-mounted electronic control devices; the CAN module has the following characteristics: High reliability: The CAN module adopts a distributed communication architecture, with the characteristics of high-speed transmission, strong anti-interference ability and good reliability; Flexibility and real-time performance: Suitable for distributed real-time control occasions with high security levels; Multi-node network communication: Supports multi-node network communication system, suitable for mutual communication between modular large instrument systems. The GPIO interface (General Purpose Input / Output) is the abbreviation of general purpose input / output port. It is a common interface type in digital electronic systems, used to communicate and control external devices. GPIO can provide digital input and output functions through pins. Users can control its output and input through software. GPIO pins can be configured as input mode or output mode. The input mode is used to read the electrical signal of the external device, and the output mode is used to control the state of the external device. In embedded systems, GPIO is a very important basic hardware resource, usually acting as a bridge between chip pins and external circuits. Through GPIO, internal signals or data can be connected and interacted with external devices or sensors. Common application scenarios include controlling LED lights, reading button status, connecting sensors, etc. The working principle of GPIO involves the configuration of multiple modes and registers. The input mode can read the high level or low level state, and the output mode can set the pin to a high level or a low level. In order to configure and control the function of the GPIO pin, it is usually necessary to set the mode, state and level of the pin by writing to a specific control register. The I2C communication interface (Inter-Integrated Circuit) is a serial communication bus standard, which is mainly used for communication between microcontrollers and peripheral devices. It has a one-master-multiple-slave bus structure, that is, one master device can communicate with multiple slave devices.The I2C bus uses two signal lines: the serial clock line (SCL) and the serial data line (SDA), through which data is transmitted and received. I2C is a serial communication protocol that only requires two lines for data transmission, namely the data line SDA and the clock line SCL. The data line is used to send data, and the clock line is controlled by the master device and determines the data transmission rate. The I2C bus allows multiple master devices to exist and determines which device has the right to use the bus through an arbitration mechanism. Each device connected to the I2C bus has a unique address for the master device to access and communicate; the I2C bus was originally used for audio and video devices, but it has now been widely used in various electronic devices, including server management, communication of single component status, etc. Due to its simple structure, small footprint, and high transmission rate, the I2C bus is very popular in embedded systems and consumer electronic devices.

[0021] The acquisition unit (AFE) includes: a basic protection logic unit, a power management module, a voltage measurement module, a temperature measurement module, a current measurement module, a MOSFET drive module, a communication interface module, and a load detection module. The basic protection logic unit is used to control the protection function of the starting power supply, the voltage measurement module is used to realize the power management module to manage the starting power supply, the voltage measurement module is used to realize the voltage monitoring of the starting power supply and realize the balanced driving of the starting power supply, the temperature measurement module is used to realize the temperature measurement of the starting power supply, the current measurement module is used to realize the current monitoring of the starting power supply, the MOSFET drive module is used to drive the power switch (MOSFET), the communication interface module is used to realize two-way communication with the MCU module, and the load detection module is used to realize the detection of the connected load and realize the charging detection.

[0022] The voltage unit (Buck DC / DC) is a DC-DC converter, which is mainly used to convert the input DC voltage into a lower output voltage. The Buck circuit is based on the principle of inductor energy storage. It switches the on and off state of the switch tube by controlling the input PWM wave with a variable duty cycle to achieve voltage conversion. The working principle of the Buck circuit can be divided into the following stages: On stage: When the switch tube is turned on, the inductor stores electrical energy and the capacitor is charged. Off stage: When the switch tube is turned off, the energy between the inductor and the capacitor is transferred to the load. At this time, the current in the inductor still exists and continues to flow to the load. Free wheel oscillation stage: After the inductor current flows to the load, the switch tube is turned off, and the current in the inductor cannot disappear immediately. Therefore, the energy in the inductor will be reversed back to the switch tube to drive the diode to turn on. Repeating stage: The above three stages are repeated, and the duty cycle of the switch tube is adjusted by the PWM controller to achieve stable regulation of the output voltage.

[0023] Wherein, the bypass current limiting circuit includes a bypass current limiting topology circuit 1 or a bypass current limiting topology circuit 2, that is, the bypass current limiting topology circuit 1 and the bypass current limiting topology circuit 2 can both achieve the bypass current limiting function required by this embodiment, wherein, Figure 2 The circuit structure diagram of the bypass current limiting topology 1 is shown in FIG. Figure 3 The circuit structure diagram of the bypass current limiting topology 2 is shown in the attached Figure 2 As shown, the bypass current limiting topology circuit 1 includes a diode DS1, a diode DS2, an inductor LS1, a MOS transistor QS1, a MOS transistor QS2, a MOS transistor QS3, and a MOS transistor QS4; wherein the anode of the diode DS1 is connected to the QS2 and the LS1 respectively, the cathode of the diode DS1 is connected to the anode of the startup power supply, the anode of the DS2 is connected to the inductor LS1 and the QS1 respectively, the input stage of the MOS transistor QS1 is connected to the diode DS2 and the inductor LS1 respectively, the output stage of the MOS transistor QS1 is connected to the cathode of the startup power supply and the MOS transistor QS4 via a current sensor, the G pole of the MOS transistor QS2 is connected to the pulse control The input stage of the MOS tube QS2 is connected to the diode DS1 and the inductor LS1 respectively, the output stage of the MOS tube QS2 is connected to the negative electrode of the starting power supply via the current sensor, and the G pole of the MOS tube QS2 is connected to the pulse controller (PWM); the input stage of the MOS tube QS3 is connected to the negative electrode of the starting power supply and is connected to the MOS tube QS2 via the current sensor, the output stage of the MOS tube QS3 is connected to the MOS tube QS4, the input stage of the MOS tube QS4 is connected to the negative electrode of the starting power supply and is connected to the MOS tube QS1 via the current sensor, and the output stage of the MOS tube QS4 is connected to the MOS tube QS3; As attached Figure 3As shown, the bypass current limiting topology circuit 2 includes a diode DS3, a diode DS4, a diode DS5, a diode DS6, an inductor LS2, an inductor LS3, a MOS transistor QS5, a MOS transistor QS6, a MOS transistor QS7, and a MOS transistor QS8; wherein the anode of the diode DS3 is connected to the QS6 and the LS3 respectively, the cathode of the diode DS1 is connected to the anode of the startup power supply, the anode of the diode DS4 is connected to the QS5 and the LS2 respectively, the cathode of the diode DS1 is connected to the anode of the startup power supply, the anode of the diode DS5 is connected to the cathode of the startup power supply, the cathode of the diode DS5 is connected to the diode DS4 and the MOS transistor QS5 respectively through the inductor LS2, the anode of the diode DS6 is connected to the cathode of the startup power supply, the cathode of the diode DS5 is connected to the diode DS3 and the MOS transistor QS6 respectively through the inductor LS3, and the output stage of the MOS transistor QS1 is connected to the anode of the startup power supply through a current sensor. The negative electrode of the MOS tube QS6 is connected, the G electrode of the MOS tube QS6 is connected to the pulse controller (PWM), the input stage of the MOS tube QS6 is connected to the diode DS3 and the inductor LS3 respectively, the output stage of the MOS tube QS6 is connected to the negative electrode of the starting power supply via the current sensor, and the G electrode of the MOS tube QS6 is connected to the pulse controller (PWM); the input stage of the MOS tube QS5 is connected to the inductor LS2 and the diode DS4, the output stage of the MOS tube QS5 is connected to the negative electrode of the starting power supply via the current sensor, and the G electrode of the MOS tube QS5 is connected to the pulse controller (PWM); the input stage of the MOS tube QS7 is connected to the negative electrode of the starting power supply and is connected to the MOS tube QS6 via the current sensor, the output stage of the MOS tube QS7 is connected to the MOS tube QS8, the input stage of the MOS tube QS8 is connected to the negative electrode of the starting power supply and is connected to the MOS tube QS5 via the current sensor, and the output stage of the MOS tube QS8 is connected to the MOS tube QS7; Therefore, the bypass current limiting circuit is composed of an inductor switch constant current circuit (bypass current limiting topology), the switch charges the inductor, and the current of the MOS tube is detected and fed back to the MOS tube control to achieve current size control. At the same time, the diode (DS1, DS2 of topology one, DS3, DS4 of topology two) can limit the reverse discharge of the inductor switch loop. When the main loop (QS3, QS4 of topology one, QS7, QS8 of topology two) is disconnected, when the constant current is discharged, there is a voltage across BV, and BV- is higher than PV-. At this time, QS1 (QS1 of topology one, QS5 of topology two) is normally open, and QS2 (QS2 of topology one, QS6 of topology two) is used as a chopper switch. By detecting the switch current of QS2 (QS2 of topology one, QS6 of topology two), QS2 (QS2 of topology one, QS6 of topology two) is controlled. The switch duty cycle is used to achieve output current limitation; when constant current charging is performed, there is voltage across BV, and BV- is lower than PV-. At this time, QS2 (topology one QS2, topology two QS6) is normally open, and QS1 (topology one QS1, topology two QS5) acts as a chopper switch. By detecting the switch current of QS1 (topology one QS1, topology two QS5), the switch duty cycle of QS1 (topology one QS1, topology two QS5) is controlled to achieve output current limitation, thereby achieving uninterrupted power protection for the startup power supply.

[0024] Embodiment 2: This embodiment also includes a protection method for a non-interruptible startup power supply protection circuit, and the method adopts the non-interruptible startup power supply protection circuit of embodiment 1.

[0025] Embodiment three, this embodiment includes an electronic device, including a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the various steps of the protection method of the non-interruptible startup power supply protection circuit of embodiment two are implemented, and the same technical effect can be achieved.

[0026] Embodiment 4, this embodiment includes a computer-readable storage medium, on which a data processing program is stored, and the data processing program is executed by a processor to perform various steps of a protection method for a non-interruptible startup power supply protection circuit in embodiment 2.

[0027] It should be understood by those skilled in the art that the embodiments of this article can be provided as methods, devices (equipment), or computer program products. Therefore, this article can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Including but not limited to RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassette, tape, disk storage or other magnetic storage device, or any other medium that can be used to store desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that communication media generally contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0028] This document is described with reference to flowcharts and / or block diagrams of methods, apparatuses (devices), and computer program products according to the embodiments of this document. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0029] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0030] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods of the technology of the present invention, and are not intended to impose any formal restrictions on the implementation methods of the technology of the present invention. Any person skilled in the art may make some changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as the technology or embodiments that are essentially the same as the present invention. Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here, and that various obvious changes, readjustments and substitutions can be made to those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may also include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A non-interruptible starting power supply protection circuit, the protection circuit is used to start the battery management system BMS, characterized in that: Specifically include: A bypass current limiting circuit, wherein the bypass current limiting circuit includes a bypass current limiting topology circuit one or a bypass current limiting topology circuit two.

2. The uninterrupted startup power protection circuit according to claim 1, characterized in that: The bypass current limiting topology circuit 1 includes a diode DS1, a diode DS2, an inductor LS1, a MOS tube QS1, a MOS tube QS2, a MOS tube QS3, and a MOS tube QS4; wherein the anode of the diode DS1 is connected to the QS2 and the LS1 respectively, the cathode of the diode DS1 is connected to the anode of the startup power supply, the anode of the DS2 is connected to the inductor LS1 and the QS1 respectively, the input stage of the MOS tube QS1 is connected to the diode DS2 and the inductor LS1 respectively, the output stage of the MOS tube QS1 is connected to the cathode of the startup power supply and the MOS tube QS4 via a current sensor, the G pole of the MOS tube QS2 is connected to the pulse controller ( The MOS tube QS2 is connected to the diode DS1 and the inductor LS1 respectively, the output stage of the MOS tube QS2 is connected to the negative electrode of the starting power supply via the current sensor, and the G pole of the MOS tube QS2 is connected to the pulse controller (PWM); the input stage of the MOS tube QS3 is connected to the negative electrode of the starting power supply and is connected to the MOS tube QS2 via the current sensor, the output stage of the MOS tube QS3 is connected to the MOS tube QS4, the input stage of the MOS tube QS4 is connected to the negative electrode of the starting power supply and is connected to the MOS tube QS1 via the current sensor, and the output stage of the MOS tube QS4 is connected to the MOS tube QS3.

3. The uninterruptible starting power supply protection circuit according to claim 1, characterized in that: The bypass current limiting topology circuit 2 includes a diode DS3, a diode DS4, a diode DS5, a diode DS6, an inductor LS2, an inductor LS3, a MOS transistor QS5, a MOS transistor QS6, a MOS transistor QS7, and a MOS transistor QS8; wherein, the positive electrode of the diode DS3 is connected to the QS6 and the LS3 respectively, the negative electrode of the diode DS1 is connected to the positive electrode of the startup power supply, the positive electrode of the diode DS4 is connected to the QS5 and the LS2 respectively, the negative electrode of the diode DS1 is connected to the positive electrode of the startup power supply, the positive electrode of the diode DS5 is connected to the negative electrode of the startup power supply, the negative electrode of the diode DS5 is connected to the diode DS4 and the MOS transistor QS5 respectively through the inductor LS2, the positive electrode of the diode DS6 is connected to the negative electrode of the startup power supply, the negative electrode of the diode DS5 is connected to the diode DS3 and the MOS transistor QS6 respectively through the inductor LS3, and the output stage of the MOS transistor QS1 is connected to the negative electrode of the startup power supply through a current sensor. The G pole of the MOS tube QS6 is connected to the pulse controller (PWM), the input stage of the MOS tube QS6 is connected to the diode DS3 and the inductor LS3 respectively, the output stage of the MOS tube QS6 is connected to the negative pole of the starting power supply via the current sensor, and the G pole of the MOS tube QS6 is connected to the pulse controller (PWM); the input stage of the MOS tube QS5 is connected to the inductor LS2 and the diode DS4, the output stage of the MOS tube QS5 is connected to the negative pole of the starting power supply via the current sensor, and the G pole of the MOS tube QS5 is connected to the pulse controller (PWM); the input stage of the MOS tube QS7 is connected to the negative pole of the starting power supply and is connected to the MOS tube QS6 via the current sensor, the output stage of the MOS tube QS7 is connected to the MOS tube QS8, the input stage of the MOS tube QS8 is connected to the negative pole of the starting power supply and is connected to the MOS tube QS5 via the current sensor, and the output stage of the MOS tube QS8 is connected to the MOS tube QS7.

4. The uninterruptible starting power supply protection circuit according to claim 1, characterized in that: The BMS system includes: a main control unit (MCU), an acquisition unit (AFE), a voltage unit (Buck DC / DC), a power switch (MOSFET) and a bypass current limiting unit; wherein the main control unit (MCU) is connected to the acquisition unit (AFE) and the voltage unit (Buck DC / DC), the acquisition unit (AFE) is connected to the power switch (MOSFET), the voltage unit (Buck DC / DC) and the main control unit (MCU), the voltage unit (Buck DC / DC) is connected to the acquisition unit (AFE) and the main control unit (MCU), and the power switch (MOSFET) is connected to the acquisition unit (AFE) and the bypass current limiting unit.

5. The non-interruptible starting power supply protection circuit according to claim 4, characterized in that: The main control unit (MCU) includes: a CAN module, a GPIO interface, and an I2C communication interface.

6. The uninterruptible starting power supply protection circuit according to claim 4, characterized in that: The acquisition unit (AFE) includes: a basic protection logic unit, a power management module, a voltage measurement module, a temperature measurement module, a current measurement module, a MOSFET drive module, a communication interface module, and a load detection module.

7. The uninterruptible starting power supply protection circuit according to claim 6, characterized in that: The basic protection logic unit is used to control the protection function of the starting power supply, the voltage measurement module is used to implement the power management module for managing the starting power supply, the voltage measurement module is used to implement voltage monitoring of the starting power supply and to achieve balanced driving of the starting power supply, the temperature measurement module is used to implement temperature measurement of the starting power supply, the current measurement module is used to implement current monitoring of the starting power supply, the MOSFET drive module is used to drive the power switch, the communication interface module is used to achieve two-way communication with the MCU module, and the load detection module is used to realize detection of connected loads and charging detection.

8. A protection method for a non-interruptible starting power supply protection circuit, characterized in that: The method adopts the uninterruptible starting power supply protection circuit described in any one of claims 1 to 7 to realize uninterruptible protection of the starting power supply.

9. An electronic device, characterized in that: It comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the protection method of the non-interruptible startup power supply protection circuit described in claim 8 is implemented.

10. A computer-readable storage medium, characterized in that: A data processing program is stored on a computer-readable storage medium, and the data processing program is executed by a processor to implement the protection method of the uninterruptible startup power supply protection circuit as described in claim 8.

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