Vehicle collision power-off protection system, method, device, vehicle and storage medium

Abstract

The present application provides a vehicle collision power-off protection system, method, device, vehicle and storage medium, the system includes: a junction box, a battery, a safety module SRS, an on-board power management system ODP, a cabin fuse box MDB, a central fuse box CJB and a rear fuse box RJB; the junction box includes a first type of fuse and a second type of fuse; one end of the first type of fuse is connected to the safety module through a switch, and the other end is connected to the ODP and MDB respectively; one end of the second type of fuse is connected to the safety module, and the other end is connected to the CJB and RJB respectively. When a collision occurs and power-off protection is required, the SRS will disconnect the switch in the junction box, so that the ODP and MDB are powered off, and the current of large items outside the cabin is disconnected, effectively preventing the electrical system from generating excessive current due to collision damage; while the CJB and RJB still maintain power supply, so that safety devices such as air bags, windows, and pre-tensioned seat belts can work normally, improving the safety inside the vehicle.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and in particular to a vehicle collision power-off protection system, method, device, vehicle and storage medium. Background Art

[0002] Against the backdrop of increasing demands for vehicle collision safety, current technology typically disconnects all electrical circuits in a vehicle during a collision. The main purpose is to prevent electrical failures after a collision, such as short circuits or leakage, thereby avoiding the risk of fire or electrical accidents.

[0003] Although the electrical cut-off design improves electrical safety after a crash, it also brings some limitations, especially in emergency situations. Since all circuits are cut off, users may not be able to perform some important operations, such as manually opening windows, activating interior lighting, or unlocking doors to escape.

[0004] Therefore, how to design a vehicle collision power-off protection system so that necessary equipment components in the vehicle can still be used in the event of a collision is an urgent problem to be solved. Summary of the invention

[0005] The present application provides a vehicle collision power-off protection system, method, device, vehicle and storage medium, which are used to ensure that important electrical systems (such as air bags, windows, pre-tensioned seat belts and other safety devices) can operate normally when the vehicle collides, thereby protecting the safety of people in the vehicle.

[0006] In a first aspect, the present application provides a vehicle collision power-off protection system, including: a junction box, a battery, a safety module SRS, an on-board power management system ODP, a cabin fuse box MDB, a central fuse box CJB and a rear fuse box RJB;

[0007] The junction box includes a first type of fuse and a second type of fuse;

[0008] One end of the first type fuse is connected to the security module through a switch, and the other end is connected to the ODP and the MDB respectively;

[0009] One end of the second type fuse is connected to the safety module, and the other end is connected to the CJB and the RJB respectively;

[0010] The junction box is connected to the battery.

[0011] Optionally, the first type of fuse is a high current fuse MEGA, and the second type of fuse is a micro fuse MID.

[0012] Optionally, the connection wires between the junction box and the ODP, the MDB, the CJB, and the RJB are aluminum flat cables.

[0013] In a second aspect, the present application provides a vehicle collision power-off protection method, which is applied to the vehicle collision power-off protection system according to any one of the first aspects, and the method includes:

[0014] The SRS safety module determines whether the power-off protection conditions are met based on the vehicle collision signal;

[0015] If the power-off protection condition is met, the SRS safety module controls the switch in the junction box to be turned off, so that the ODP and MDB are powered off, while the CJB and RJB are still powered on.

[0016] Optionally, the method further includes:

[0017] If the power-off protection condition is met, the control module of the battery obtains the current value output by the battery in real time;

[0018] If the current value is greater than the preset current value, the power supply of the battery is stopped.

[0019] Optionally, the method further includes:

[0020] If the current value is less than the preset current value within the preset time, the power supply of the battery is restored.

[0021] In a third aspect, the present application provides a vehicle collision power-off protection device, the device comprising:

[0022] A judgment module, used to determine whether a power-off protection condition is met according to a vehicle collision signal;

[0023] The control module is used to control the switch in the junction box to be disconnected if the power-off protection conditions are met, so that the ODP and MDB are powered off, while the CJB and RJB are still powered on.

[0024] In a fourth aspect, the present application provides a vehicle, comprising a vehicle collision power-off protection system as described in any one of the first aspects.

[0025] Optionally, the wiring between the junction box and the ODP, the MDB, the CJB, and the RJB passing through the vehicle body area is arranged in a side area of ​​the vehicle chassis.

[0026] In a fifth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method as described in any one of the second aspects.

[0027] In a sixth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the above first aspect and / or various possible implementations of the first aspect.

[0028] The present application provides a vehicle collision power-off protection system, method, device, vehicle and storage medium, the system includes: a junction box, a battery, a safety module SRS, an on-board power management system ODP, a cabin fuse box MDB, a central fuse box CJB and a rear fuse box RJB; the junction box includes a first type of fuse and a second type of fuse; one end of the first type of fuse is connected to the safety module through a switch, and the other end is connected to ODP and MDB respectively; one end of the second type of fuse is connected to the safety module, and the other end is connected to CJB and RJB respectively; the junction box is connected to the battery. When a collision occurs and power-off protection is required, the SRS safety module will disconnect the switch in the junction box, so that ODP and MDB are powered off, and the current of large items outside the cabin is disconnected, effectively preventing the electrical system from generating excessive current due to collision damage; while CJB and RJB still maintain power supply, so that important electrical systems (such as air bags, windows, pre-tensioned seat belts and other safety devices) can work normally to protect the safety of people in the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0030] Figure 1 This is a schematic diagram of common wiring arrangements;

[0031] Figure 2 A schematic diagram of the structure of the vehicle collision power-off protection system provided in this application;

[0032] Figure 3 A schematic diagram of the overall layout of the vehicle collision power-off protection system provided in this application;

[0033] Figure 4 A schematic diagram of the internal structure of the junction box provided for this application;

[0034] Figure 5 A schematic diagram of the module connection of the vehicle collision power-off protection system provided in this application;

[0035] Figure 6 Schematic diagram of the process of vehicle collision power-off protection method provided in this application Figure 1 ;

[0036] Figure 7 Schematic diagram of the process of vehicle collision power-off protection method provided in this application Figure 2 ;

[0037] Figure 8 A schematic diagram of the structure of the electronic device provided in this application.

[0038] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0039] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0040] First, the terms involved in this application are explained:

[0041] Central Junction Box (CJB): Responsible for integrating and managing the current distribution of various electrical and electronic systems inside the vehicle (usually in the passenger compartment). Usually located in the cockpit or center console area, it manages the electronic components in the vehicle (such as the instrument panel, air conditioning, in-car entertainment system, etc.).

[0042] Rear Junction Box (RJB): Responsible for connecting and protecting the fuses of the rear electrical system of the vehicle, connecting the electrical equipment and circuits at the rear.

[0043] Main Distribution Box (MDB): Located in the vehicle's engine compartment, it is responsible for distributing current from the battery and generator to the electrical systems of various vehicle components and managing external (outside the cabin) power supply.

[0044] Battery Fuse Box (BFB): Usually connected directly to the vehicle's battery, it protects the battery and important circuits in the electrical system from overload and short circuit.

[0045] High current fuse (MEGA): A fuse used in high current circuits, commonly found in the protection of high-power electrical devices in automotive electrical systems, such as batteries or generators.

[0046] Micro fuse (MID): A type of fuse that is commonly used to protect medium current circuits in automotive electrical systems. MID fuses are generally smaller than MEGA fuses, but are still suitable for larger current flows.

[0047] On-board power management system ODP: A system used in the vehicle's electrical system that is responsible for managing and distributing the vehicle's internal power supply, ensuring current distribution and protection of the vehicle's external electrical systems (such as transmission systems, batteries, generators, etc.).

[0048] at present, Figure 1 This is a schematic diagram of common circuit layout, such as Figure 1 As shown by the red line, the wiring harness inside the vehicle is generally arranged near the edge of the chassis, which is a side collision risk area. When the vehicle collides, all the lines inside the vehicle will be disconnected, which will cause the user to be unable to perform some important operations, such as manually opening the window, starting the interior lighting, or unlocking the door to escape.

[0049] To avoid this risk and to avoid the collision risk area, the line has to be arranged in the middle of the vehicle chassis, such as Figure 1 As shown by the middle green line, it is located in the high-frequency area stepped on by users, affecting the user's daily riding comfort.

[0050] In view of the above problems, the present application provides a vehicle collision power-off protection system. The wiring does not need to pass through the high-frequency area stepped on by the user. A junction box is set in the line, and the line is connected to various fuse boxes inside the vehicle through the junction box. When a collision occurs, the lines in the cabin and the lines in the passenger compartment in the collision risk area are disconnected, thereby avoiding the risk of wiring harness leakage after the collision and retaining power for necessary equipment in the vehicle, so that users can still perform important operations on the vehicle in an emergency.

[0051] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0052] Figure 2 The schematic diagram of the vehicle collision power-off protection system provided in this application is as follows: Figure 2 As shown, it includes: junction box, battery, safety module SRS, on-board power management system ODP, cabin fuse box MDB, central fuse box CJB and rear fuse box RJB;

[0053] The junction box includes a first-class fuse (MEGA) and a second-class fuse (MID). The line is connected to the MDB and ODP responsible for the electrical system and power distribution outside the vehicle cabin through the first-class fuse in the junction box, and the line is connected to the CJB and RJB responsible for the electrical system inside the vehicle cabin through the second-class fuse in the junction box.

[0054] One end of the first type of fuse is connected to the safety module through the power supply switch (Power Supply Switch, PSS for short), and the other end is connected to the ODP and MDB respectively. The safety module can control the on and off of the electrical system outside the cabin by controlling the opening and closing of the PSS.

[0055] One end of the second type fuse is connected to the safety module, and the other end is connected to the CJB and RJB respectively.

[0056] For example, the rated current of the first type fuse MEGA connected to the ODP in the junction box is 350A; the rated current of the first type fuse MEGA connected to the MDB is 300A. The rated current of the second type fuse MID connected to the CJB in the junction box is 175A; the rated current of the second type fuse MID connected to the RJB is 125A. The power consumption in the cabin connected to the second type fuse is relatively small. Both the first type fuse and the second type fuse can be melted when the current exceeds the additional current.

[0057] The junction box is connected to the battery, and the battery power flows through the junction box to the CJB (central fuse box), RJB (rear fuse box), MDB (engine fuse box) and ODP (on-board power distribution system) to ensure that the current can flow to various electronic components.

[0058] After a collision, the vehicle's safety systems, such as airbags, emergency seat belt tightening, and brake systems, need to remain powered. CJB and RJB are responsible for managing these critical safety functions, so maintaining power can ensure that these safety systems can still function after an accident and protect the driver and passengers from greater harm. CJB is responsible for managing the vehicle's central safety control, including the triggering of the airbag system, while RJB is responsible for the vehicle's basic body functions, such as lights and brakes. After a power outage, if these systems cannot operate, it may increase the severity of the accident. By maintaining power to these critical systems, safety protection functions can be ensured to work properly after a collision.

[0059] MDB and ODP are responsible for the power supply of the power battery and drive system. The power battery and drive system may be damaged and cause dangerous situations such as electrical short circuit or battery leakage, causing fire or electrical failure. By disconnecting the power supply of ODP and MDB, it can effectively prevent the electrical system from causing secondary dangers such as excessive current and electrical fire due to collision damage.

[0060] This embodiment provides a vehicle collision power-off protection system, which transmits the battery current to each fuse box and corresponding electronic components through a junction box. When a collision occurs, the safety module can directly disconnect the switch in the junction box, thereby disconnecting the current of the electrical system outside the passenger cabin (MDB and ODP) and retaining the current in the passenger cabin (CJB and RJB), thereby ensuring the power supply in the passenger cabin in an emergency and improving the safety of the system.

[0061] Figure 3 The overall layout diagram of the vehicle collision power-off protection system provided in this application is as follows: Figure 3 As shown, the battery is connected to the junction box and connected to the MDB, ODP, CJB and RJB through the aluminum busbar of the junction box.

[0062] Figure 4 The schematic diagram of the internal structure of the junction box provided for this application is as follows: Figure 4 As shown, the junction box is connected to the positive pole of the battery and is connected to the ODP, CJB, and MDB through the internal fuse.

[0063] Figure 5 The module connection diagram of the vehicle collision power-off protection system provided in this application is as follows: Figure 5 As shown, the vehicle collision sensor is connected to the SRS safety module through a hard line, and the body control module (BCM) is connected to the SRS safety module through a can line; the SRS safety module is connected to the junction box, and the SRS safety module is connected to the PSS switch in the junction box. The other end of the PSS switch is connected to the ODP and MDB, and the ODP and MDB are connected in parallel. The SRS safety module is connected to the CJB and RJB through the junction box. The battery is connected to the body control module and the SRS safety module respectively, and is connected to the ODP, MDB, CJB and RJB through the junction box.

[0064] The collision sensor is directly connected to the SRS safety module through a hard line. After detecting the collision information, the data is transmitted to the SRS safety module through this connection. The SRS safety module is usually responsible for controlling the activation of safety devices such as air bags and pre-tensioned seat belts.

[0065] The body controller is connected to the SRS safety module via the CAN bus, a common communication protocol in vehicles that allows different onboard electronic modules to communicate with each other. This connection transmits body control related information, such as vehicle speed, collision status, etc., to help the SRS module make an appropriate response.

[0066] The SRS safety module is connected to other vehicle systems (such as CJB, RJB, etc.) through a junction box, which acts as a power supply.

[0067] The PSS switch controls the connection to the ODP and MDB, cutting off or connecting the power supply in the event of a crash or emergency, preventing the power from continuing to flow to sensitive areas.

[0068] The ODP and MDB are connected in parallel to ensure redundancy and flexibility when distributing power among multiple electrical systems, so that if one system fails, another can continue to provide power.

[0069] The battery provides the main power for the vehicle and is directly connected to the body controller and SRS safety module. The battery's power supply is distributed to different parts of the vehicle (such as the SRS safety system, body control system, etc.) through these modules. At the same time, the battery is also connected to the ODP, MDB, CJB and RJB through the junction box to ensure that the entire on-board electrical system can obtain the required power.

[0070] Based on the above-mentioned vehicle collision power-off protection system, the processing logic when a collision occurs is introduced below.

[0071] Figure 6 Schematic diagram of the process of vehicle collision power-off protection method provided in this application Figure 1 ,like Figure 6 As shown, the following steps are included:

[0072] S101. The SRS safety module determines whether a power-off protection condition is met according to a vehicle collision signal.

[0073] In this step, when a vehicle collides, the onboard collision sensors (such as acceleration sensors, collision sensors, etc.) detect the intensity and direction of the collision and transmit the signal to the SRS safety module. The SRS safety module determines whether the "power-off protection" condition is met based on these collision signals (such as collision intensity, collision time, etc.). This judgment is usually based on a certain threshold, such as when the acceleration of the collision exceeds a certain critical value, or when the power-off protection is initiated under specific conditions (such as the severity and location of the collision).

[0074] If the vehicle is involved in a sufficiently severe collision (for example, greater than a certain collision threshold), the SRS safety module will determine that the power-off protection condition has been met. The purpose of the power-off protection is to cut off the power supply to prevent electrical system failure or electricity from causing secondary dangers (such as battery short circuit, fire, etc.).

[0075] S102: If the power-off protection condition is met, the SRS safety module controls the PSS switch in the junction box to be turned off, so that the ODP and MDB are powered off, while the CJB and RJB are still powered on.

[0076] Once the SRS safety module determines that the collision signal meets the power-off protection conditions, the power supply is disconnected through the vehicle's electrical system (specifically through the junction box).

[0077] The SRS safety module controls the switch in the junction box to cut off the power to the ODP and MDB, thereby cutting off the power supply in the vehicle and preventing the electrical system from causing more serious safety hazards (such as battery overheating, fire, etc.) after a collision.

[0078] Even though ODP and MDB are cut off, the SRS safety module will maintain power supply to CJB and RJB to ensure that other important electrical systems (such as body control system, air bag control system, etc.) can work normally, further protecting the safety of the occupants. Keeping CJB and RJB powered helps ensure that safety devices such as air bags, windows, and pre-tensioned seat belts can be activated normally to protect the safety of the occupants.

[0079] Exemplarily, it takes 0.3 seconds for the SRS to disconnect from the PSS.

[0080] Through the above method, the vehicle's power distribution can be intelligently controlled to minimize the secondary dangers caused by the electrical system after a collision while keeping the most critical safety functions running effectively.

[0081] Figure 7 Schematic diagram of the process of vehicle collision power-off protection method provided in this application Figure 2 ,like Figure 7 As shown in the above Figure 6 Based on the embodiment, the following steps are also included:

[0082] S103: The control module of the battery obtains the current value output by the battery.

[0083] In this step, when a collision signal is detected, an output current value is obtained through a preset current sensor to determine whether the output current value is normal.

[0084] S104: If the current value is greater than the preset current value, the battery power supply is stopped.

[0085] For example, the preset current value can be set to 800 A, or 700 A, or 900 A, which is not limited here. If the preset current value is exceeded, it means that the current in the circuit is too large and the current output needs to be disconnected.

[0086] S105: After a preset time, try to restore power.

[0087] S106: Determine whether the current after power restoration is less than a preset current value.

[0088] S107: If the current after power restoration is less than the preset current value, the battery resumes power supply.

[0089] If the current is normal after power is restored, it means that the circuit has returned to normal, the battery has resumed power supply, and the process ends.

[0090] S108: If the current after power restoration is greater than or equal to the preset current value, stop supplying power.

[0091] S109: After the number of power restorations reaches a preset number, no further power restoration attempts are made.

[0092] The process terminates.

[0093] This embodiment monitors and controls the output current value of the battery to intelligently manage the battery power supply when the vehicle collides, thereby improving the safety of the vehicle after the collision and avoiding secondary dangers to the battery or electrical system due to abnormal current.

[0094] After a collision, the vehicle circuit may have a short circuit, open circuit or other faults, causing a significant increase in current. If the current exceeds the preset value, the process will automatically stop the battery from supplying power to prevent the battery from outputting abnormal current and prevent potential dangers such as electrical system overload, short circuit or fire. If the system returns to normal (that is, the current is less than the preset value), power will be restored to ensure the stability and safety of the vehicle's electrical system. By attempting to restore power, the system provides the battery with multiple opportunities to recover. If the current returns to normal (less than the preset current value), power is restored, which helps the vehicle continue to operate and reduces unnecessary complete power outages caused by a single current abnormality judgment. If the current is too large after power is restored, the system will continue to stop powering to avoid additional electrical hazards.

[0095] The present application also provides a vehicle, which includes a vehicle collision power-off protection system.

[0096] In a specific implementation, Figure 1 As shown, the wiring of the junction box and ODP, MDB, CJB, and RJB passing through the vehicle body area is set in the side area of ​​the vehicle chassis (i.e., the side collision risk area in the figure). Because the power-off protection method of the junction box can be used to cut off the power of the vehicle electrical system when a collision occurs, it does not need to be set in the high-frequency trampling area to avoid the collision risk area, which can improve the user's daily riding experience.

[0097] The present application provides a vehicle collision power-off protection device, which is a device of an SRS safety module. The vehicle collision power-off protection device includes:

[0098] A judgment module, used to determine whether a power-off protection condition is met according to a vehicle collision signal;

[0099] The control module is used to control the switch in the junction box to be disconnected if the power-off protection conditions are met, so that the ODP and MDB are powered off, while the CJB and RJB are still powered on.

[0100] The vehicle collision power-off protection device provided in this embodiment can execute the method provided by the SRS safety module side in the above method embodiment. Its implementation principle and technical effect are similar, and this embodiment will not be described in detail here.

[0101] Figure 8 This is a schematic diagram of the structure of the electronic device provided in this application. Figure 8 As shown, the electronic device may be a physical device of the SRS safety module. The electronic device 50 provided in this embodiment includes: at least one processor 501 and a memory 502. Optionally, the device 50 also includes a communication component 503. The processor 501, the memory 502 and the communication component 503 are connected via a bus 504.

[0102] In a specific implementation process, at least one processor 501 executes the computer-executable instructions stored in the memory 502, so that at least one processor 501 executes the above method.

[0103] The specific implementation process of the processor 501 can be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

[0104] In the above embodiments, it should be understood that the processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the invention can be directly implemented as a hardware processor, or can be implemented by a combination of hardware and software modules in the processor.

[0105] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (NVM), such as at least one disk storage.

[0106] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of this application is not limited to only one bus or one type of bus.

[0107] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0108] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0109] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special-purpose computer.

[0110] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0111] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0112] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0113] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0114] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0115] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0116] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A vehicle collision power-off protection system, characterized in that: include: Junction box, battery, safety module SRS, on-board power management system ODP, cabin fuse box MDB, central fuse box CJB and rear fuse box RJB; The junction box includes a first type of fuse and a second type of fuse; One end of the first type fuse is connected to the safety module through a switch, and the other end is connected to the ODP and the MDB respectively; One end of the second type fuse is connected to the safety module, and the other end is connected to the CJB and the RJB respectively; The junction box is connected to the battery.

2. The system according to claim 1, characterized in that The first type of fuse is a high current fuse MEGA, and the second type of fuse is a micro fuse MID.

3. The system according to claim 1 or 2, characterized in that: The connection wires between the junction box and the ODP, the MDB, the CJB, and the RJB are aluminum flat wires.

4. A vehicle collision power-off protection method, characterized in that: The vehicle collision power-off protection system according to any one of claims 1 to 3 is applied, and the method comprises: The SRS safety module determines whether the power-off protection conditions are met based on the vehicle collision signal; If the power-off protection condition is met, the SRS safety module controls the switch in the junction box to be turned off, so that the ODP and MDB are powered off, while the CJB and RJB are still powered on.

5. The method according to claim 4, characterized in that The method further comprises: If the power-off protection condition is met, the control module of the battery obtains the current value output by the battery in real time; If the current value is greater than the preset current value, the power supply of the battery is stopped.

6. The method according to claim 5, characterized in that The method further comprises: If the current value is less than the preset current value within the preset time, the power supply of the battery is restored.

7. A vehicle collision power-off protection device, characterized in that: The device comprises: A judgment module, used to determine whether a power-off protection condition is met according to a vehicle collision signal; The control module is used to control the switch in the junction box to be disconnected if the power-off protection conditions are met, so that the ODP and MDB are powered off, while the CJB and RJB are still powered on.

8. A vehicle, characterized in that: It comprises the vehicle collision power-off protection system as described in any one of claims 1 to 3.

9. The vehicle according to claim 8, characterized in that The junction box and the lines of ODP, MDB, CJB, and RJB passing through the vehicle body area are set in the side area of ​​the vehicle chassis.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 4 to 6 when executed by a processor.

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