WO2024255540A1 - 车辆碰撞安全保护系统、方法、车辆和介质 - Google Patents

车辆碰撞安全保护系统、方法、车辆和介质 Download PDF

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Publication number
WO2024255540A1
WO2024255540A1 PCT/CN2024/094307 CN2024094307W WO2024255540A1 WO 2024255540 A1 WO2024255540 A1 WO 2024255540A1 CN 2024094307 W CN2024094307 W CN 2024094307W WO 2024255540 A1 WO2024255540 A1 WO 2024255540A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
collision
protection switch
switch unit
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2024/094307
Other languages
English (en)
French (fr)
Inventor
赵弋峰
王芳芳
管必聪
何志华
李金涛
张辉
杨甜甜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Viridi Energy Mobility Technology Ningbo Co Ltd
Zhejiang Geely Holding Group Co Ltd
Zhejiang Zeekr Intelligent Technology Co Ltd
Original Assignee
Viridi Energy Mobility Technology Ningbo Co Ltd
Zhejiang Geely Holding Group Co Ltd
Zhejiang Zeekr Intelligent Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Viridi Energy Mobility Technology Ningbo Co Ltd, Zhejiang Geely Holding Group Co Ltd, Zhejiang Zeekr Intelligent Technology Co Ltd filed Critical Viridi Energy Mobility Technology Ningbo Co Ltd
Priority to EP24822492.5A priority Critical patent/EP4729333A1/en
Publication of WO2024255540A1 publication Critical patent/WO2024255540A1/zh
Priority to US19/419,838 priority patent/US20260103160A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0007—Measures or means for preventing or attenuating collisions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/04—Cutting off the power supply under fault conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01013—Means for detecting collision, impending collision or roll-over
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01204—Actuation parameters of safety arrangents
    • B60R2021/01211—Expansion of air bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01204—Actuation parameters of safety arrangents
    • B60R2021/01252—Devices other than bags

Definitions

  • the present disclosure relates to the field of vehicle safety technology, and in particular to a vehicle collision safety protection system, method, vehicle and medium.
  • the high-voltage relay In the related art, safety is ensured by cutting off the high-voltage relay when a vehicle collides. However, in the event of a failure of the high-voltage relay, the high-voltage relay may fail to be successfully disconnected, posing a threat to vehicle safety.
  • one purpose of the present disclosure is to provide a vehicle collision safety control protection system, method, vehicle and medium capable of cutting off vehicle high voltage when a vehicle collision occurs.
  • a first protection switch unit, the first protection switch unit is arranged in a high-voltage circuit of the power battery;
  • a second protection switch unit is connected in series to the positive electrode of the power battery
  • At least one collision detection unit used to detect whether the vehicle has collided
  • the control unit is used to control the second protection switch unit to be disconnected and the first protection switch unit to be disconnected when the vehicle collides, so as to perform double protection.
  • the second protection switch unit is an intelligent fuse, which includes a gunpowder ignition part, a driving part and a cut-off.
  • the intelligent fuse receives a disconnection command issued by the control unit, it ignites the inside of the gunpowder ignition part to drive the driving part to move quickly so that the cut-off part cuts off the copper bar.
  • the first protection switch unit includes:
  • a main positive relay the main positive relay is connected in series with the second protection switch unit;
  • a main negative relay which is connected in series to the negative electrode of the power battery
  • the collision detection unit includes a first collision detection unit and a second collision detection unit
  • the first collision detection unit includes a first collision sensor and an airbag controller
  • the airbag controller sends collision information to the control unit when the first collision sensor detects a collision of the vehicle
  • the second collision detection unit includes a second collision sensor
  • the second collision sensor sends a collision signal to the control unit when detecting a collision of the vehicle
  • the vehicle collision safety control protection system, method, vehicle and medium of the embodiment of the present disclosure it is possible to detect the vehicle collision safety control protection system, method, vehicle and medium of the embodiment of the present disclosure.
  • the other disconnection method can also achieve the purpose of cutting off the high voltage, thereby improving the success rate of cutting off the high voltage and ensuring the safety of the vehicle.
  • FIG2 is an electrical schematic diagram of a vehicle collision safety protection system in one embodiment
  • FIG3 is a schematic diagram of a process flow of a vehicle collision safety protection method in one embodiment
  • FIG4 is a schematic flow chart of a vehicle collision safety protection method in yet another embodiment
  • FIG5 is a schematic flow chart of a vehicle collision safety protection method in yet another embodiment.
  • FIG. 1 provides a control block diagram of a vehicle collision safety protection system. The working principle of the vehicle collision safety protection system is described in detail below in conjunction with FIG. 1 .
  • a vehicle collision safety protection system includes a first protection switch unit, a second protection switch unit, at least one collision detection unit and a control unit.
  • the first protection switch unit is arranged in the high-voltage circuit of the power battery. Therefore, when the first protection unit is disconnected, the high-voltage circuit of the power battery can be cut off to prevent the power battery from continuing to provide high-voltage output to the vehicle end.
  • the second protection switch unit is arranged at the positive terminal of the power battery and is connected in series with the positive terminal of the power battery. Therefore, when the second protection switch unit is disconnected, the positive output of the power battery can be cut off.
  • FIG2 shows an electrical schematic diagram of a vehicle collision safety protection system.
  • the positive output terminal of the power battery is connected to the second protection switch unit, and the first protection switch unit is connected to the high-voltage circuit of the power battery.
  • the input terminal of the first protection switch unit is connected to the second protection switch unit, and the input terminal of the first protection switch unit is connected to the second protection switch unit.
  • the output end is connected to the negative terminal of the power battery, so that the second protection switch unit is placed inside the first protection switch unit.
  • the position close to the power battery is called the inside, and the position far from the power battery is called the outside.
  • the position where the second protection switch unit is connected to the circuit is closer to the power battery than the position where the first protection switch unit is connected to the circuit.
  • the collision detection unit can detect whether the vehicle has collided through different sensors.
  • a three-axis acceleration sensor can detect the change of the real-time acceleration of the vehicle to detect whether the vehicle has collided.
  • multiple collision detection units can be configured to improve the detection accuracy of vehicle collision.
  • the control unit controller is essentially a battery management system (BMS).
  • BMS battery management system
  • the main functions of BMS are to improve the utilization rate of power batteries, prevent overcharging and over-discharging of power batteries, extend the service life of power batteries, monitor battery status, and be a system for managing, controlling and using power batteries.
  • the control unit can receive information detected by the collision detection unit, so that the control unit can control the first protection switch unit and the second protection switch unit to disconnect when the vehicle collides.
  • the purpose of disconnecting the high voltage can be achieved, thereby ensuring the safety of the vehicle after the collision. For example, timely disconnection of the high voltage of the vehicle can avoid damage to the power battery of the vehicle and cause an accident.
  • the structures of the first protection switch unit and the second protection switch unit are different, so the disconnection mode and operation method of the first protection switch unit and the second protection switch unit are also different, resulting in different failure conditions of the first protection switch unit and the second protection switch unit.
  • the first protection switch unit and the second protection switch unit are controlled to disconnect at the same time, and double protection can be performed, so that when one of the protection switch units cannot be disconnected, the purpose of disconnecting the high voltage can also be achieved by disconnecting the other protection switch unit, thereby ensuring that the vehicle can successfully disconnect the high voltage in the event of a collision.
  • the second protection switch unit is an intelligent fuse, wherein the intelligent fuse includes a gunpowder ignition part, a driving part and a cutting part.
  • the control unit determines that the second protection switch unit needs to be controlled to be disconnected, the control unit sends a disconnection command to the second protection switch unit.
  • the intelligent fuse receives the disconnection command issued by the control unit, it ignites the inside of the gunpowder ignition part.
  • the inside of the gunpowder ignition part is ignited, a large pressure will be generated. The generated pressure can push the driving part to move quickly.
  • the cutting part can cut the copper bar back and forth and cut off the copper bar, thereby cutting off the high-voltage circuit and stopping the driving battery from supplying power to the vehicle end.
  • the first protection switch unit is a high voltage relay, wherein the first protection switch unit includes a main positive relay and a main negative relay, the main positive relay is connected in series with the second protection switch unit, the main positive relay is located at the positive side of the power battery, that is, one end of the second protection switch unit is connected to the positive output end of the power battery, and the other end of the second protection switch unit is connected to the main positive relay, and the main positive relay can control the charging and discharging process of the power battery.
  • the main negative relay is connected in series to the negative electrode of the power battery, and is used to control the grounding of the negative electrode of the power battery to ensure the safe operation of the battery pack.
  • the coils of the main positive relay and the main negative relay are excited by the current and can generate a magnetic field.
  • the generated magnetic field magnetizes the iron cores in the main positive relay and the main negative relay, attracts the contacts, and squeezes the springs between the contacts, and finally closes the contacts, so that the main positive relay and the main negative relay are connected to provide the main power supply to the vehicle end.
  • the control unit can cut off the power supply of the control circuit, the coils of the main positive relay and the main negative relay lose the excitation, the magnetic field disappears, the springs between the contacts return to their original state, and the contacts open, so that the main positive relay and the main negative relay are disconnected respectively, so that the high-voltage circuit can be disconnected and the high-voltage power supply to the vehicle end is stopped.
  • control unit can also control the second protection switch unit to disconnect, thereby achieving the same effect of disconnecting the high voltage.
  • the collision detection unit includes a first collision detection unit and a second collision detection unit.
  • the first collision detection unit includes a first collision sensor and an airbag controller.
  • the first collision sensor can detect whether the vehicle has collided and transmit the collision information to the airbag controller.
  • the airbag controller can control the pop-up of the airbag according to the collision information. For example, the airbag controller controls the pop-up of the airbag when it is determined that the vehicle has collided according to the collision information, and controls the airbag not to pop up when it is determined that the vehicle has not collided according to the collision information.
  • the airbag controller can also send the collision information to the control unit through the controller area network bus (CAN, Controller Area Network), so that the control unit controls the first protection switch unit and the second protection switch unit to be disconnected according to the collision information.
  • controller area network bus CAN, Controller Area Network
  • the second collision detection unit includes a second collision sensor, which can detect whether the vehicle collides.
  • the second collision sensor detects that the vehicle collides, the second collision sensor sends a collision signal to the control unit, and the control unit can control the first protection switch unit and the second protection switch unit to disconnect according to the collision signal.
  • the control unit determines whether it is necessary to control the first protection switch unit and the second protection switch unit to be disconnected according to the collision situation of the vehicle.
  • the control unit can receive the collision information sent by the airbag controller and the collision signal sent by the second collision detection unit. When the control unit receives at least one of the collision information and the collision signal, it can determine that the vehicle has collided and then control the first protection switch unit and the second protection switch unit to be disconnected.
  • the vehicle collision safety protection system is configured with a total of two protection switch units, which can simultaneously control the two protection switch units to be disconnected in the event of a vehicle collision. Therefore, if one of the protection switch units cannot be successfully disconnected, the high voltage can be cut off by disconnecting the other protection switch unit, thereby ensuring the safety of the vehicle.
  • the present disclosure also provides a vehicle, which is equipped with a vehicle collision safety protection system.
  • the present disclosure also provides a vehicle collision safety protection method, which is applied to a vehicle, as shown in FIG3 , which shows a flow chart of a vehicle collision safety protection method, wherein the steps of the vehicle collision safety protection method include:
  • Step S301 detecting whether a vehicle collision occurs.
  • whether the vehicle collides can be detected by a collision sensor on the vehicle.
  • a collision sensor on the vehicle For example, a three-axis acceleration sensor can be used to detect changes in the real-time acceleration of the vehicle to detect whether the vehicle collides.
  • Step S302 when a collision of the vehicle is detected, the second protection switch unit is controlled to be disconnected, and the first protection switch unit is controlled to be disconnected to perform double protection.
  • the vehicle includes a first protection switch unit, a second protection switch unit and a power battery.
  • a collision of the vehicle may easily cause the power battery of the vehicle to be squeezed or damaged, resulting in a fire in the power battery of the vehicle, etc., posing a threat to the safety of the vehicle. Based on this, when it is determined that a collision has occurred in the vehicle, the first protection switch unit is controlled to be disconnected and the second protection switch unit is controlled to be disconnected.
  • the structures of the first protection switch unit and the second protection switch unit are different, so the disconnection mode and operation method of the first protection switch unit and the second protection switch unit are also different, which leads to different failure conditions of the first protection switch unit and the second protection switch unit. Therefore, when the first protection switch unit is facing a failure, the high voltage can be disconnected by the second protection switch unit, and when the second protection switch unit is facing a failure, the high voltage can be disconnected by the first protection switch unit.
  • the first protection switch unit and the second protection switch unit are controlled to be disconnected at the same time, and double protection can be performed, so that when one of the protection switch units cannot be disconnected, the purpose of disconnecting the high voltage can also be achieved by disconnecting the other protection switch unit, thereby ensuring that the vehicle can successfully disconnect the high voltage in the event of a collision.
  • the connection relationship between the first protection switch unit, the second protection switch unit and the power battery is shown in the electrical schematic diagram of the vehicle collision safety protection system shown in Figure 2.
  • the first protection switch unit is set in the high-voltage circuit of the power battery, and the second protection switch unit is connected in series to the positive output terminal of the power battery, wherein the second protection switch unit is located inside the first protection switch unit.
  • the position close to the power battery is called the inside, and the position far from the power battery is called the outside.
  • the second protection switch unit is The position where the circuit is connected is closer to the power battery than the position where the first protection switch unit is connected to the circuit.
  • the second protection switch unit is an intelligent fuse, which includes a gunpowder ignition unit, a drive unit, and a cut-off unit.
  • a disconnection command is sent to the intelligent fuse.
  • the intelligent fuse receives the disconnection command issued by the control unit, an ignition signal is triggered, and the inside of the gunpowder ignition unit is ignited according to the ignition signal.
  • the inside of the gunpowder ignition unit is ignited, a large pressure is generated, and the generated pressure can drive the drive unit to move quickly.
  • the cut-off unit can cut off the copper bar, thereby cutting off the high-voltage circuit and stopping the drive battery from supplying power to the vehicle end.
  • the first protection switch unit is a high-voltage relay, which includes a main positive relay and a main negative relay
  • the second protection switch unit is an intelligent fuse, which includes a gunpowder ignition unit, a driving unit and a cut-off unit.
  • the main positive relay is connected in series with the second protection switch unit
  • the main negative relay is connected in series to the negative pole of the power battery.
  • the generated magnetic field magnetizes the iron cores in the main positive relay and the main negative relay, attracts the contacts, and squeezes the springs between the contacts, and finally closes the contacts, so that the main positive relay and the main negative relay are connected, providing a high-voltage power supply to the vehicle end.
  • the control unit can cut off the power supply of the control circuit, the coils of the main positive relay and the main negative relay lose the excitation, the magnetic field disappears, the springs between the contacts return to their original state, and the contacts open, so that the main positive relay and the main negative relay are disconnected respectively, so that the high-voltage circuit can be disconnected and the high-voltage power supply to the vehicle end is stopped.
  • detecting whether a vehicle has collided includes:
  • Step S401 detecting whether the vehicle collides by means of a first collision sensor to receive collision information sent by an airbag controller connected to the first collision sensor, and detecting whether the vehicle collides by means of a second collision sensor to receive a collision signal sent by the second collision sensor.
  • a collision sensor is used to detect whether the vehicle has collided, wherein the vehicle is equipped with two collision sensors.
  • the operation of the two collision sensors is described in detail below.
  • the first collision sensor can detect whether the vehicle collides and transmits the collision information to the airbag controller.
  • the airbag controller receives the collision information, it controls the airbag according to the collision information. Specifically, when the airbag controller determines that the vehicle collides according to the collision information, it controls the airbag to pop out; in addition, the airbag controller can also send the collision information through the CAN bus, so that the control unit can control the disconnection of the first protection switch unit and the second protection switch unit according to the collision information.
  • the second collision sensor can also detect whether the vehicle collides.
  • the second collision sensor and the control unit are connected by a hard line.
  • the second collision sensor can directly send a collision signal to the control unit, so that the control unit can The collision signal controls the disconnection of the first protection switch unit and the second protection switch unit.
  • the vehicle it is possible to determine whether the vehicle has collided by means of the collision information detected by the first collision sensor, and it is also possible to determine whether the vehicle has collided by means of the collision signal detected by the second collision sensor.
  • providing two collision sensors can improve the detection accuracy of vehicle collisions and avoid disconnection of the working power supply of a normally operating vehicle due to detection errors.
  • Step S402 determining whether a vehicle collision occurs based on at least one of the collision information and the collision signal.
  • the collision information and the collision signal When the collision information and the collision signal are received, it can be determined whether the vehicle has collided based on at least one of the collision information and the collision signal. Specifically, when the collision information and the collision signal both indicate that the vehicle has collided, it is determined that the vehicle has collided; if one of the collision information and the collision signal indicates that the vehicle has collided and the other indicates that the vehicle has not collided, the detection result can be re-acquired through the first collision sensor or the second collision sensor. In another feasible manner, when the collision information and the collision signal are different, the collision information detected by the first collision sensor can be used as the basis. This is because the airbag control needs to control the ejection of the airbag based on the collision information, so it can be considered that the collision information detected by the first collision sensor has higher accuracy.
  • FIG5 shows a schematic flow chart of a vehicle collision safety protection method.
  • Step 2 determine whether the first collision sensor detects that the vehicle has collided.
  • Step 3 determining whether the second collision sensor detects that the vehicle has collided. If the second sensor detects that the vehicle has collided, execute steps 5 and 6.
  • Step 4 When the first collision sensor detects that the vehicle has collided, the collision information is sent to the BMS via the CAN bus.
  • Step 5 controlling the second protection switch unit to disconnect.
  • Step 6 controlling the first protection switch unit to disconnect.
  • the first protection switch unit when a collision of the vehicle is detected, the first protection switch unit is controlled to be disconnected, and the first protection switch unit is controlled to be disconnected.
  • the high voltage can be cut off by the other protection switch unit, thereby providing doubly protection for the vehicle.
  • a "computer-readable storage medium” can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses.
  • computer-readable media include the following: an electrical connection with one or more wirings (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and editable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM).
  • the computer-readable medium can even be paper or other suitable medium on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting or processing in other suitable ways as necessary, and then stored in a computer memory.
  • first and second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.
  • a feature defined as “first” or “second” may explicitly or implicitly include at least one of the features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

一种车辆碰撞安全保护系统、方法、车辆和介质。车辆碰撞安全保护系统，包括：第一保护开关单元，第一保护开关单元设置在动力电池的高压回路中；第二保护开关单元，第二保护开关单元串联连接在动力电池的正极；至少一个碰撞检测单元，用于检测车辆是否发生碰撞；控制单元，用于在车辆发生碰撞时控制第二保护开关单元断开，并控制第一保护开关单元断开，以进行双重保护。

Description

车辆碰撞安全保护系统、方法、车辆和介质
相关申请的交叉引用
本公开要求于2023年6月16日提交的申请号为202310723142.X，名称为“车辆碰撞安全保护系统、方法、车辆和介质”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及车辆安全技术领域，特别是涉及一种车辆碰撞安全保护系统、方法、车辆和介质。
背景技术
相关技术中，在车辆发生碰撞时通过切断高压继电器保证安全，但是在高压继电器发生故障的情况下，容易导致高压继电器无法成功断开，对车辆安全造成威胁。
公开内容
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本公开的一个目的在于提出一种能够在车辆发生碰撞时切断车辆高压的一种车辆碰撞安全控制保护系统、方法、车辆和介质。
根据本公开实施例的车辆碰撞安全控制保护系统，包括：
第一保护开关单元，第一保护开关单元设置在动力电池的高压回路中；
第二保护开关单元，第二保护开关单元串联连接在动力电池的正极；
至少一个碰撞检测单元，用于检测车辆是否发生碰撞；
控制单元，用于在车辆发生碰撞时控制第二保护开关单元断开，并控制第一保护开关单元断开，以进行双重保护。
上述方案中，第二保护开关单元为智能熔断器，智能熔断器包括火药点爆部、驱动部和切断，智能熔断器在接收到控制单元发出的断开指令时点燃所述火药点爆部的内部以驱动所述驱动部快速移动使得所述切断部切断铜巴。
上述方案中，第一保护开关单元包括：
主正继电器，主正继电器与第二保护开关单元串联连接；
主负继电器，主负继电器串联连接在动力电池的负极；
其中，控制单元还用于在车辆发生碰撞时控制主正继电器和主负继电器分别断开，以断开高压回路。
上述方案中，碰撞检测单元包括第一碰撞检测单元和第二碰撞检测单元，第一碰撞检测单元包括第一碰撞传感器和安全气囊控制器，安全气囊控制器在第一碰撞传感器检测到车辆发生碰撞时，发送碰撞信息给控制单元，第二碰撞检测单元包括第二碰撞传感器，第二碰撞传感器在检测到车辆发生碰撞时发送碰撞信号给控制单元，其中，
控制单元在接收到碰撞信息和碰撞信号中的至少一个时，确定车辆发生碰撞。
根据本公开实施例的车辆，包括上述任一项的车辆碰撞安全保护系统。
根据本公开实施例的车辆碰撞安全控制保护方法，车辆包括第一保护开关单元、动力电池和第二保护开关单元，第一保护开关单元设置在动力电池的高压回路中，第二保护开关单元串联连接在动力电池的正极，其中，方法包括：
检测车辆是否发生碰撞；
在检测到车辆发生碰撞时，控制第二保护开关单元断开，并控制第一保护开关单元断开，以进行双重保护。
上述方案中，第二保护开关为智能熔断器，智能熔断器包括火药点爆部、驱动部和切断部，其中，控制第二保护开关单元断开，包括：
触发点火信号，并根据点火信号点燃火药点爆部的内部以驱动驱动部快速移动使得切断部切断铜巴。
上述方案中，第一保护开关单元包括主正继电器和主负继电器，主正继电器与第二保护开关单元串联连接，主负继电器串联连接在动力电池的负极，其中，控制第一保护开关单元断开，包括：
控制主正继电器和主负继电器分别断开，以断开高压回路。
上述方案中，检测车辆是否发生碰撞，包括：
通过第一碰撞传感器检测车辆是否发生碰撞，以接收与第一碰撞传感器相连的安全气囊控制器发送的碰撞信息，并通过第二碰撞传感器检测车辆是否发生碰撞，以接收第二碰撞传感器发送的碰撞信号；
根据碰撞信息和碰撞信号中的至少一个，判断车辆是否发生碰撞。
根据本公开实施例的计算机可读存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现上述车辆碰撞安全保护方法的步骤。
根据本公开实施例的车辆碰撞安全控制保护系统、方法、车辆和介质，能够在检测到车 辆发生碰撞的情况下，通过同时控制第一保护开关单元和第二保护开关单元断开，能够在其中一种断开方式失效的情况下，另外一种断开方式也能达到切断高压的目的，提高了切断高压的成功率，从而保证了车辆的安全。
本公开附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施方式的描述中将变得明显和容易理解，其中：
图1为一个实施例中车辆碰撞安全保护系统的控制框图；
图2为一个实施例中车辆碰撞安全保护系统的电气原理图；
图3为一个实施例中车辆碰撞安全保护方法的流程示意图；
图4为又一个实施例中车辆碰撞安全保护方法的流程示意图；
图5为又一个实施例中车辆碰撞安全保护方法的流程示意图。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
以下对本公开实施例的技术方案的实现细节进行详细描述。
如图1所示，图1提供了一种车辆碰撞安全保护系统的控制框图，下面结合图1对车辆碰撞安全保护系统的工作原理进行详细说明。
在一个实施例中，车辆碰撞安全保护系统包括第一保护开关单元、第二保护开关单元、至少一个碰撞检测单元和控制单元。
第一保护开关单元设置在动力电池的高压回路中，因此，在第一保护单元断开的情况下，可以切断动力电池的高压回路，避免动力电池继续向车端提供高压输出。
第二保护开关单元设置在动力电池的正极端，与动力电池的正极端串联，因此，在第二保护开关单元断开的情况下，可以切断动力电池的正极输出。
如图2所示，图2示出了车辆碰撞安全保护系统的电气原理图，在图2中，动力电池的正极输出端接入第二保护开关单元，再将第一保护开关单元接入到动力电池的高压回路中，具体地，将第一保护开关单元的输入端与第二保护开关单元连接，将第一保护开关单元的 输出端与动力电池的负极端连接，使得第二保护开关单元放置在第一保护开关单元的内侧。需要说明的是，这里将靠近动力电池的位置称为内侧，将远离动力电池的位置称为外侧，在图2的电气原理图中，第二保护开关单元在接入电路的位置比第一保护开关单元接入电路的位置更靠近动力电池的位置。
至少一个碰撞检测单元，碰撞检测单元能够通过不同的传感器检测车辆是否发生碰撞，示例地，通过三轴加速度传感器检测车辆的实时加速度的变化情况，可以检测车辆是否发生碰撞。在实际应用中，为了避免碰撞检测单元存在车辆碰撞误测或者碰撞检测单元存在故障无法检测车辆是否发生碰撞的情况，还可以配置多个碰撞检测单元，从而可以提高车辆碰撞的检测精度。
控制单元控制器实质上为电池管理系统(BMS，Battery Management System)，BMS主要功能是提高动力电池利用率，防止动力电池过充过放，延长动力电池使用寿命，监测电池状态，能够是管理、控制和使用动力电池的系统。
在本实施例中，控制单元能够接收碰撞检测单元检测的信息，从而控制单元能够在车辆发生碰撞时，控制第一保护开关单元和第二保护开关单元断开，通过控制第一保护开关单元和第二保护开关单元的断开，能够达到断开高压的目的，从而保证车辆在发生碰撞之后的安全，例如及时断开车辆的高压能够避免车辆的动力电池受损而引发事故。在实际应用中，第一保护开关单元和第二保护开关单元的结构不相同，因此第一保护开关单元和第二保护开关单元的断开方式和操作方法也不相同，从而导致第一保护开关单元故障情况和导致第二保护开关单元故障情况是不相同，因此可以在第一保护开关单元面临故障的情况下，通过第二保护开关单元实现高压的断开，在第二保护开关单元面临故障的情况下，通过第一保护开关单元实现高压的断开，因此，在本实施例中同时控制第一保护开关单元和第二保护开关单元断开，能够进行双重保护，使得在其中一路保护开关单元无法断开的情况下，可以通过另一路保护开关单元的断开也能达到断开高压的目的，从而保证车辆在发生碰撞的情况下能够成功断开高压。
在一个实施例中，第二保护开关单元为智能熔断器，其中，智能熔断器包括火药点爆部、驱动部和切断部，在控制单元判定需要控制第二保护开关单元断开的情况下，控制单元向第二保护开关单元发出断开指令，智能熔断器在接收到控制单元发出的断开指令时点燃火药点爆部的内部，在点爆火药点爆部的内部发生的情况下，会产生较大的压强，产生的压强可以推动驱动部快速移动，在驱动部移动的过程中，切断部能够对铜巴来回切割，将铜巴切断，从而可以切断高压回路，停止驱动电池向车端供电。
在一个实施例中，第一保护开关单元为高压继电器，其中，第一保护开关单元包括主正继电器和主负继电器，主正继电器与第二保护开关单元串联连接，主正继电器位于动力电池的正极侧，也就是第二保护开关单元的一端接入动力电池的正极输出端，第二保护开关单元的另一端接入主正继电器，主正继电器能够控制动力电池的充电和放电的过程。主负继电器串联在动力电池的负极，用于控制动力电池的负极接地，保证电池组的安全运行。
在实际应用中，主正继电器和主负继电器的控制电路通电的情况下，主正继电器和主负继电器的线圈受到电流的激励，能够产生磁场，产生的磁场会使主正继电器和主负继电器中的铁芯磁化，吸引触点，同时使触点之间的弹簧被挤压，最终触点闭合，使得主正继电器和主负继电器接通，为车端提供主电源。控制单元在车辆发生碰撞时，可以使控制电路的电源断电，主正继电器和主负继电器的线圈失去激励，磁场消失，触点之间的弹簧恢复原状，触点打开，从而使得主正继电器和主负继电器分别断开，从而能够断开高压回路，停止向车端提供高压电源。
在实际应用中，主正继电器和主负继电器因过流过热容易发生粘连故障，导致主正继电器和主负继电器无法及时断开，或者需要较长的时间才能实现断开，在这种情况下，控制单元还可以通过控制第二保护开关单元断开，同样达到断开高压的效果。
在一个实施例中，碰撞检测单元包括第一碰撞检测单元和第二碰撞检测单元，第一碰撞检测单元包括第一碰撞传感器和安全气囊控制器，第一碰撞传感器能够检测车辆是否发生碰撞，并将碰撞信息传送给安全气囊控制器，安全气囊控制器能够根据碰撞信息控制安全气囊的弹出，示例地，安全气囊控制器根据碰撞信息确定车辆发生碰撞时控制安全气囊弹出，在根据碰撞信息确定车辆没有发生碰撞时控制安全气囊不弹出。另外，安全气囊控制器在第一碰撞传感器检测到车辆发生碰撞的情况下，还可以通过控制器局域网总线(CAN，Controller Area Network)将碰撞信息发生给控制单元，使控制单元根据碰撞信息控制第一保护开关单元和第二保护开关单元断开。
第二碰撞检测单元包括第二碰撞传感器，第二碰撞传感器能够检测车辆是否发生碰撞，第二碰撞传感器在检测到车辆发生碰撞的情况下，向控制单元发送碰撞信号，控制单元能够根据碰撞信号控制第一保护开关单元和第二保护开关单元断开。
控制单元是根据车辆的碰撞情况判定是否需要控制第一保护开关单元和第二保护开关单元断开，在本实施例中，控制单元可以接收安全气囊控制器发送的碰撞信息，还可以接收第二碰撞检测单元发送的碰撞信号，控制单元在接收到碰撞信息和碰撞信号中的至少一个时，可以确定车辆发生碰撞，进而控制第一保护开关单元和第二保护开关单元断开。
在上述实施例中，车辆碰撞安全保护系统一共配置有两个保护开关单元，能够在车辆发生碰撞的情况下，同时控制两个保护开关单元断开，从而能够在其中一个保护开关单元无法成功断开的情况下，通过断开另一个保护开关单元而切断高压，从而能够保证车辆的安全。
本公开还提供了一种车辆，车辆配置有车辆碰撞安全保护系统。
本公开还提供了一种车辆碰撞安全保护方法，该方法应用于车辆上，如图3所示，图3示出了一种车辆碰撞安全保护方法的流程示意图，其中，车辆碰撞安全保护方法的步骤包括：
步骤S301，检测车辆是否发生碰撞。
这里，可以通过车辆上的碰撞传感器检测车辆是否发生碰撞，例如，可以通过三轴加速度传感器检测车辆的实时加速度的变化情况，可以检测车辆是否发生碰撞。
步骤S302，在检测到车辆发生碰撞时，控制第二保护开关单元断开，并控制第一保护开关单元断开，以进行双重保护。
这里，车辆包括第一保护开关单元、第二保护开关单元和动力电池，车辆的碰撞容易导致车辆的动力电池受到挤压或者损坏，导致车辆的动力电池引发火灾等，对车辆的安全造成威胁，基于此，在确定车辆发生碰撞的情况下，控制第一保护开关单元断开和控制第二保护开关单元断开。
在实际应用中，第一保护开关单元和第二保护开关单元的结构不相同，因此第一保护开关单元和第二保护开关单元的断开方式和操作方法也不相同，从而导致第一保护开关单元故障情况和导致第二保护开关单元故障情况是不相同，因此可以在第一保护开关单元面临故障的情况下，通过第二保护开关单元实现高压的断开，在第二保护开关单元面临故障的情况下，通过第一保护开关单元实现高压的断开，因此，在本实施例中同时控制第一保护开关单元和第二保护开关单元断开，能够进行双重保护，使得在其中一路保护开关单元无法断开的情况下，可以通过另一路保护开关单元的断开也能达到断开高压的目的，从而保证车辆在发生碰撞的情况下能够成功断开高压。
需要说明的是，第一保护开关单元、第二保护开关单元和动力电池之间的连接关系参照图2所示的车辆碰撞安全保护系统的电气原理图。具体地，第一保护开关单元设置在动力电池的高压回路中，第二保护开关单元串联连接在动力电池的正极输出端，其中，第二保护开关单元位于第一保护开关单元的内侧，需要说明的是，这里将靠近动力电池的位置称为内侧，将远离动力电池的位置称为外侧，在图2的电气原理图中，第二保护开关单元在 接入电路的位置比第一保护开关单元接入电路的位置更靠近动力电池的位置。
在一个实施例中，第二保护开关单元为智能熔断器，智能熔断器包括火药点爆部、驱动部和切断部。在检测到车辆发生碰撞的情况下，会向智能熔断器发送断开指令，智能熔断器在接收到控制单元发出的断开指令时触发点火信号，根据点火信号点燃火药点爆部的内部，在火药点爆部的内部被点燃的情况下，会产生较大的压强，产生的压强可以推动驱动部快速移动，在驱动部快速移动的过程中，切断部能够切断铜巴，从而可以切断高压回路，停止驱动电池向车端供电。
在一个实施例中，第一保护开关单元为高压继电器，高压继电器包括主正继电器和主负继电器，第二保护开关单元为智能熔断器，智能熔断器包括火药点爆部、驱动部和切断部。其中，参照图2所示，主正继电器与第二保护开关单元串联连接，主负继电器串联连接在动力电池的负极。在实际应用，主正继电器和主负继电器的控制电路通电的情况下，主正继电器和主负继电器的线圈受到电流的激励，能够产生磁场，产生的磁场会使主正继电器和主负继电器中的铁芯磁化，吸引触点，同时使触点之间的弹簧被挤压，最终触点闭合，使得主正继电器和主负继电器接通，为车端提供高压电源。控制单元在车辆发生碰撞时，可以使控制电路的电源断电，主正继电器和主负继电器的线圈失去激励，磁场消失，触点之间的弹簧恢复原状，触点打开，从而使得主正继电器和主负继电器分别断开，从而能够断开高压回路，停止向车端提供高压电源。
在一个实施例中，如图4所示，检测车辆是否发生碰撞，包括：
步骤S401，通过第一碰撞传感器检测车辆是否发生碰撞，以接收与第一碰撞传感器相连的安全气囊控制器发送的碰撞信息，并通过第二碰撞传感器检测车辆是否发生碰撞，以接收第二碰撞传感器发送的碰撞信号。
在本实施例中，是通过碰撞传感器检测车辆是否发生碰撞，其中，车辆配置了两路碰撞传感器。下面对两路碰撞传感器的工作展开具体说明。
第一碰撞传感器能够检测车辆是否发生碰撞，并将碰撞信息传送给安全气囊控制器。安全气囊控制器在接收到碰撞信息的情况下，根据碰撞信息进行安全气囊的控制，具体地，当安全气囊控制器在根据碰撞信息确定车辆发生碰撞的情况下，控制安全气囊弹出；另外，安全气囊控制器还可以通过CAN总线发送碰撞信息，从而能够使控制单元根据碰撞信息控制第一保护开关单元和第二保护开关单元的断开。
第二碰撞传感器同样能够检测车辆是否发生碰撞，第二碰撞器和控制单元之间是通过硬线连接，第二碰撞传感器能够直接将碰撞信号发送给控制单元，从而能够使控制单元根据 碰撞信号控制第一保护开关单元和第二保护开关单元的断开。
因此，在本实施例中，可以通过第一碰撞传感器检测到的碰撞信息确定车辆是否发生碰撞，还可以通过第二碰撞传感器检测到的碰撞信号确定车辆是否发生碰撞。这里，设置两路碰撞传感器可以提高车辆碰撞的检测精度，避免因检测错误而导致正常运行的车辆的工作电源被断开。
步骤S402，根据碰撞信息和碰撞信号中的至少一个，判断车辆是否发生碰撞。
在接收到碰撞信息和碰撞信号的情况下，可以根据碰撞信息和碰撞信号中的至少一个，判断车辆是否发生碰撞。具体地，在碰撞信息和碰撞信号同时表征车辆发生碰撞的情况下，确定车辆发生碰撞；若碰撞信息和碰撞信号中的其中一个表征车辆发生碰撞而另一个表征车辆没有发生碰撞的情况下，可以通过第一碰撞传感器或第二碰撞传感器重新获取检测结果。在另一种可行的方式中，在碰撞信息和碰撞信号不相同的情况下，可以以第一碰撞传感器检测到的碰撞信息为准，这是因为安全气囊控制需要根据碰撞信息控制安全气囊的弹出，因此可以认为第一碰撞传感器检测到的碰撞信息的精度更高。
在实际应用中，在通过第一保护开关单元或第二保护开关单元将高压切断之后，还可以将车辆的碰撞故障进行上报。
在一个实施例中，如图5所示，图5示出了车辆碰撞安全保护方法的流程示意图。
步骤1，执行车辆碰撞的检测，这里是通过第一碰撞传感器和第二碰撞传感器进行碰撞检测，用于确定车辆是否发生碰撞。
步骤2，判断第一碰撞传感器是否检测到车辆发生碰撞。
步骤3，判断第二碰撞传感器是否检测到车辆发生碰撞。在第二传感器检测到车辆发生碰撞的情况下执行步骤5和步骤6。
步骤4，在第一碰撞传感器检测到车辆发生碰撞的情况下，通过CAN总线将碰撞信息发送至BMS。
步骤5，控制第二保护开关单元断开。
步骤6，控制第一保护开关单元断开。
在上述实施例中，在检测到车辆发生碰撞的情况下，控制第一保护开关单元断开，并控制第一保护开关单元断开，能够在其中一个保护开关单元发生故障的情况下，通过另一个保护开关单元将高压切断，从而可以对车辆进行双重保护。
需要说明的是，在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介 质中，以供指令执行系统、装置或设备(如基于计算机的系统、包括处理器的系统或其他可以从指令执行系统、装置或设备取指令并执行指令的系统)使用，或结合这些指令执行系统、装置或设备而使用。就本说明书而言，“计算机可读存储介质”可以是任何可以包含、存储、通信、传播或传输程序以供指令执行系统、装置或设备或结合这些指令执行系统、装置或设备而使用的装置。计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。
应当理解，本公开的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。例如，如果用硬件来实现，和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本公开的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种车辆碰撞安全保护系统，包括：
    第一保护开关单元，所述第一保护开关单元设置在动力电池的高压回路中；
    第二保护开关单元，所述第二保护开关单元串联连接在所述动力电池的正极；
    至少一个碰撞检测单元，用于检测车辆是否发生碰撞；
    控制单元，用于在所述车辆发生碰撞时控制所述第二保护开关单元断开，并控制所述第一保护开关单元断开，以进行双重保护。
  2. 根据权利要求1所述的车辆碰撞安全保护系统，其中，所述第二保护开关单元为智能熔断器，所述智能熔断器包括火药点爆部、驱动部和切断部，所述智能熔断器在接收到所述控制单元发出的断开指令时点燃所述火药点爆部的内部以驱动所述驱动部快速移动使得所述切断部切断铜巴。
  3. 根据权利要求1或2所述的车辆碰撞安全保护系统，其中，所述第一保护开关单元包括：
    主正继电器，所述主正继电器与所述第二保护开关单元串联连接；
    主负继电器，所述主负继电器串联连接在所述动力电池的负极；
    其中，所述控制单元还用于在所述车辆发生碰撞时控制所述主正继电器和所述主负继电器分别断开，以断开所述高压回路。
  4. 根据权利要求1-3中任一项所述的车辆碰撞安全保护系统，其中，所述碰撞检测单元包括第一碰撞检测单元和第二碰撞检测单元，所述第一碰撞检测单元包括第一碰撞传感器和安全气囊控制器，所述安全气囊控制器在所述第一碰撞传感器检测到所述车辆发生碰撞时，发送碰撞信息给所述控制单元，所述第二碰撞检测单元包括第二碰撞传感器，所述第二碰撞传感器在检测到所述车辆发生碰撞时发送碰撞信号给所述控制单元，其中，
    所述控制单元在接收到所述碰撞信息和所述碰撞信号中的至少一个时，确定所述车辆发生碰撞。
  5. 一种车辆，包括根据权利要求1-4中任一项所述的车辆碰撞安全保护系统。
  6. 一种车辆碰撞安全保护方法，所述车辆包括第一保护开关单元、动力电池和第二保护开关单元，所述第一保护开关单元设置在所述动力电池的高压回路中，所述第二保护开关单元串联连接在所述动力电池的正极，其中，所述方法包括：
    检测所述车辆是否发生碰撞；
    在检测到所述车辆发生碰撞时，控制所述第二保护开关单元断开，并控制所述第一保护开关单元断开，以进行双重保护。
  7. 根据权利要求6所述的车辆碰撞安全保护方法，其中，所述第二保护开关为智能熔断器，所述智能熔断器包括火药点爆部、驱动部和切断部，其中，控制所述第二保护开关单元断开，包括：
    触发点火信号，并根据所述点火信号点燃所述火药点爆部的内部以驱动所述驱动部快速移动使得所述切断部切断铜巴。
  8. 根据权利要求6或7所述的车辆碰撞安全保护方法，其中，所述第一保护开关单元包括主正继电器和主负继电器，所述主正继电器与所述第二保护开关单元串联连接，所述主负继电器串联连接在所述动力电池的负极，其中，控制所述第一保护开关单元断开，包括：
    控制所述主正继电器和所述主负继电器分别断开，以断开所述高压回路。
  9. 根据权利要求6-8中任一项所述的车辆碰撞安全保护方法，其中，检测所述车辆是否发生碰撞，包括：
    通过第一碰撞传感器检测所述车辆是否发生碰撞，以接收与所述第一碰撞传感器相连的安全气囊控制器发送的碰撞信息，并通过第二碰撞传感器检测所述车辆是否发生碰撞，以接收所述第二碰撞传感器发送的碰撞信号；
    根据所述碰撞信息和所述碰撞信号中的至少一个，判断所述车辆是否发生碰撞。
  10. 一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现权利要求6-9中任一项所述方法的步骤。
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