High pressure crash safety system and method of controlling the same

Abstract

The application discloses a high-voltage collision safety system and a control method thereof, and belongs to the technical field of vehicles. The safety system comprises a collision-damaged circuit, the collision-damaged circuit comprises a detection wire through which electric current flows, the detection wire is installed on the side wall of a high-voltage connector, when the high-voltage connector is damaged due to collision, the detection wire is disconnected to generate a collision signal; and a control module is used for receiving the collision signal and controlling power-off of the high-voltage system and / or prohibiting power-on of the high-voltage system. When collision occurs, the shell of the high-voltage connector is broken to cause the detection wire to be disconnected, so that the on-off state of the detection wire can be acquired as the collision signal, and the power-off operation of the high-voltage system is performed when the shell of the high-voltage connector is broken. The detection wire is arranged on the high-voltage connector, and in the case of collision, the damaged detection of the relatively dangerous part can be more targeted, and the electric shock safety accident and the short-circuit fire risk caused by the damage of the high-voltage connector can be avoided.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a high-voltage collision safety system and its control method. Background Technology

[0002] When an electric vehicle is involved in a collision, damage to the casing of high-voltage components may lead to insulation failure, resulting in leakage of live parts or short circuits between the positive and negative terminals, posing a risk of electric shock and potentially causing a short circuit and fire. Currently, electric vehicles generally employ a control strategy that cuts off the high-voltage system after a collision to mitigate these risks. This control strategy is triggered under the same conditions as airbags: a collision sensor detects a collision fault and then cuts off the high-voltage system. However, since collision sensors determine whether a collision has occurred and its severity by detecting the impact acceleration at the moment of impact, in a significant number of collisions, although the casing of the high-voltage components is damaged, the collision fault threshold set by the vehicle is not reached. Therefore, the collision-based power-off protection mechanism is not triggered, and the risks of electric shock and short circuit fire cannot be avoided. Summary of the Invention

[0003] The purpose of this invention is to provide a high-pressure collision safety system and its control method to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] To address the aforementioned technical problems, a high-voltage collision safety system is provided, applicable to a high-voltage system with a high-voltage connector. The system comprises: a collision damage circuit, including a detection wire carrying current, the detection wire being installed on the side wall of the high-voltage connector; the collision damage circuit is configured to generate a collision signal when a collision damages the high-voltage connector, by disconnecting the detection wire; and a control module for receiving the collision signal and controlling the high-voltage system to power down and / or prohibiting the high-voltage system from powering on.

[0005] This technical solution offers at least the following advantages: By installing the detection lead on the side wall of the high-voltage connector, when a collision occurs, the connector housing breaks, causing the detection lead to disconnect. The continuity of the detection lead can then be used as a collision signal. When the connector housing breaks, a power-off operation is initiated on the high-voltage system. This triggers a protection mechanism to power off the high-voltage system when the connector is damaged in a collision, mitigating the risks of electric shock and short circuit fires. Furthermore, since the housings of most high-voltage assemblies are primarily cast aluminum with high mechanical strength, they are unlikely to suffer severe damage leading to high-voltage short circuits in a collision. In contrast, high-voltage connectors are mainly plastic housings, which are easily damaged in a collision, leading to short circuits. Therefore, placing the detection lead on the high-voltage connector allows for more targeted damage detection of more dangerous areas in the event of a collision, preventing electric shock accidents and short circuit fires caused by connector damage.

[0006] Optionally, the high-voltage connector is provided with positive and negative conductors arranged side-by-side on the same distribution plane. The sidewall of the high-voltage connector parallel to the distribution plane serves as the collision surface, and the detection wire is installed on the collision surface of the high-voltage connector. When the high-voltage connector is damaged by a force in the parallel direction of the positive and negative conductors, it is easy for the positive and negative conductors to come into close contact and cause a short circuit. At this time, the collision surface is more prone to damage than other surfaces. Therefore, placing the detection wire on the collision surface can more accurately determine whether the current collision is likely to cause a short circuit or other problems.

[0007] Optionally, the collision-damaged circuit includes at least two detection wires connected in parallel. All the detection wires connected in parallel are arranged side-by-side on the same sidewall of the high-voltage connector, and the corresponding ends of all the detection wires are connected to a common low-voltage pin. The extent of the collision damage can be determined based on the number of continuity / discontinuity detection wires.

[0008] Optionally, the control module is used to receive electrical signals from the collision-damaged circuit. These electrical signals include the continuity status and resistance value between the two low-voltage pins at both ends of the detection wire. The collision signal indicates either a break in the continuity or a change in the resistance value. In addition to monitoring the continuity of the detection wire, the module can also monitor the resistance value between the two low-voltage pins at both ends of the detection circuit. This allows the number of broken detection wires to be determined by changes in the resistance value, further defining the extent of the damage.

[0009] Optionally, two collision-damaged circuits are provided on the same side wall of the high-voltage connector housing, and the detection wires of the two collision-damaged circuits are respectively located on the inner and outer sides of the high-voltage connector housing. The degree of collision damage can be determined based on the state of the detection wires on the inner and outer sides of the high-voltage connector housing.

[0010] Optionally, the safety system further includes a warning module configured to generate an inner collision signal when the inner detection wire is disconnected, and an outer collision signal when the outer detection wire is disconnected. The control module is further configured to control the warning module to issue a warning when only the outer collision signal is received. When the control module receives only the outer collision signal and not the inner collision signal, it indicates that only the outer detection wire is disconnected, while the inner detection wire is not disconnected. This suggests that the collision is minor and has not yet damaged the internal components of the high-voltage connector. The warning device can then alert the driver to promptly inspect the vehicle.

[0011] Optionally, the detection wire is integrated into the high-voltage connector housing. This enhances the correlation between the detection wire and the high-voltage connector housing, allowing for accurate detection of damage to the housing by sensing the continuity of the detection wire when the high-voltage connector housing is damaged. This enables the system to shut down, preventing short circuits and potential fires.

[0012] A vehicle comprising a high-voltage collision safety system as described in any of the preceding claims.

[0013] A high-voltage collision safety system control method is disclosed for controlling a vehicle's high-voltage system. The high-voltage system includes any of the aforementioned high-voltage collision safety systems. A high-voltage connector is connected to a high-voltage assembly controller, and a control module is integrated within the high-voltage assembly controller. The control method includes: activating the collision-damaged circuit; the high-voltage assembly controller acquiring the collision signal of the collision-damaged circuit in real time; the high-voltage assembly controller reporting the collision signal via a bus; and the vehicle controller receiving the collision signal and controlling the high-voltage system to power down and / or prohibiting the high-voltage system from powering on. This method facilitates the safe management of multiple high-voltage connectors, accurately identifies which high-voltage connector has failed, and achieves precise fault location. It allows for fault classification based on the faulty high-voltage connector and its location, and avoids false alarms that may occur when connecting external circuits.

[0014] Optionally, the vehicle controller receives the collision signal and controls the high-voltage system to power down, including: acquiring the vehicle's driving speed; and when the driving speed is below a first threshold, controlling the high-voltage system to power down and / or prohibiting the high-voltage system from powering on. Allowing the high-voltage system to power down only when the vehicle speed is below the preset first threshold better ensures vehicle driving safety. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the straight high-voltage connector in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the L-shaped high-voltage connector in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of a structure in which multiple detection wires are connected in parallel in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the high-voltage collision safety system according to an embodiment of the present invention;

[0020] Figure 5 This is a flowchart illustrating the high-voltage collision safety system control method according to an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the logic block of the high-voltage collision safety system control method according to an embodiment of the present invention.

[0022] 11. High-voltage connector; 12. Positive conductor; 13. Negative conductor; 14. Impact surface; 15. Low-voltage pin; 16. Detection wire. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] like Figure 1-4 As shown, a high-voltage collision safety system is applied to a high-voltage system with a high-voltage connector 11, which is used in a vehicle. The high-voltage connector 11 carries high voltage and high current, and includes a high-voltage shielded wire, an inner shielding ring, an outer shielding ring, terminals, seals, and a housing, etc. The high-voltage shielded wire contains a conductor.

[0026] The safety system includes a collision damage circuit and a control module. The collision damage circuit includes a detection wire 16, with low-voltage pins 15 at both ends. These low-voltage pins 15 form a loop connection with a low-voltage power supply and a control switch. By turning off the control switch, the low-voltage power supply allows current to flow through the detection wire 16. The detection wire 16 is made of a material that is easily broken under stress; alternatively, the detection wire 16 may be made of conventional metal wire material, but it has multiple scratches or grooves arranged in parallel on it. When subjected to external force, the detection wire 16 is prone to breakage at the scratches or grooves. The detection wire 16 is mounted on the side wall of the high-voltage connector 11 housing.

[0027] The high-voltage connector 11 is connected to a high-voltage assembly controller, and the control module is integrated into the high-voltage assembly controller. The control module is electrically connected to the collision-damaged circuit, enabling it to detect and receive electrical signals from the collision-damaged circuit. These signals include the continuity and resistance values ​​between the two low-voltage pins 15. When a vehicle collision occurs, damage to the housing of the high-voltage connector 11 causes the detection wire 16 inside the housing to break simultaneously. The breakage of the detection wire 16 generates a collision signal in the collision-damaged circuit. Specifically, the collision signal indicates either a break in the continuity between the two low-voltage pins 15 or a change in the resistance value between the two low-voltage pins 15. When the control module receives this collision signal, it de-energizes the vehicle's high-voltage system and prevents it from energizing, thus preventing short circuits and potential fires after the collision and ensuring vehicle safety.

[0028] The high-voltage connector 11 includes a positive conductor 12 and a negative conductor 12, which are arranged side-by-side on the same distribution plane. A sidewall of the high-voltage connector 11 housing, parallel or nearly parallel to this distribution plane, serves as the collision surface 14. Generally, the high-voltage connector 11 housing has two opposing collision surfaces 14, each with an independently configured collision-damaged circuit. The control module acquires the electrical signals from each of the two collision-damaged circuits. If a vehicle collides and experiences force on the high-voltage connector 11, with the force directed in the parallel direction of the positive and negative conductors 12, the positive and negative conductors 12 on the high-voltage connector 11 are prone to approaching each other and short-circuiting. In this case, one side of the high-voltage connector 11 housing sidewall, parallel or nearly parallel to the distribution plane, will inevitably be damaged. Therefore, placing the collision-damaged circuit on the collision surface 14 makes it easier and more accurate to determine whether a collision is likely to cause a short circuit or fire. In other embodiments, the collision-damaged circuits on the two collision surfaces 14 of the same high-voltage connector 11 can be connected in series. If any one or two collision-damaged circuits generate a collision signal, the control module can detect that the high-voltage connector 11 has a safety risk.

[0029] Optionally, a collision-damaged circuit may have multiple detection wires 16 connected in parallel, such as two, three, four, five, or six. The number and length of the detection wires 16 can be set according to the specific dimensions of the high-voltage connector 11. Multiple detection wires 16 are arranged side-by-side, roughly covering a collision surface 14. When a vehicle collides, damage to the collision surface 14 of the high-voltage connector 11 causes partial or complete breakage of the detection wires 16, resulting in a change in the total resistance between the two low-voltage pins 15 in the collision-damaged circuit. By monitoring the change in the total resistance, the control module can calculate the number of open / closed detection wires 16, thereby determining the extent of damage to the high-voltage connector 11 on the collision surface 14.

[0030] In other embodiments, the resistances at both ends of multiple detection wires 16 in the same damaged circuit can be made different, and the specific location and extent of the damage can be determined by the specific resistance change between the low-voltage pins 15 at both ends. Specifically, a damaged circuit may have five detection wires 16 arranged side by side, evenly distributed on a collision surface 14 of the high-voltage connector 11. The resistance values ​​of the five detection wires 16 along the side-by-side direction are 1 ohm, 1.1 ohm, 1.3 ohm, 1.6 ohm, and 2 ohm, respectively. When the total resistance change between the low-voltage pins 15 at both ends of the damaged circuit is detected to be 1 ohm, it is considered that the first detection wire 16 in the side-by-side direction has not broken, while the other four detection wires 16 have broken. Therefore, the location and extent of the break can be determined more accurately, and the precise location and extent of the damage can be obtained. This not only allows for accurate troubleshooting but also enables the setting of fault classification and processing.

[0031] Optionally, the safety system also includes an alert module. An independent collision damage circuit is provided on both the inner and outer sides of the same collision surface 14 on the sidewall of the high-voltage connector 11 housing. That is, one high-voltage connector 11 housing corresponds to four independent collision damage circuits. The control module monitors the electrical signals of each of the four independent collision damage circuits. When the outer detection wire 16 is disconnected, an outer collision signal is generated; when the inner detection wire 16 is disconnected, an inner collision signal is generated.

[0032] The two impact surfaces 14 of the high-voltage connector 11 are labeled as surface A and surface B, respectively. Assuming that during a vehicle collision, if one of the impact surfaces 14 of the motor high-voltage connector 11 (such as surface A) experiences a breakage in the outer impact damage circuit, while the inner impact damage circuit remains intact, and the control module in the motor controller receives the impact signal from the outer surface of surface A but not the inner surface, then the damage to the high-voltage connector 11 is considered minor. The control module then controls the warning module to issue a warning, such as displaying on the instrument panel, "Motor high-voltage connector 11 surface A is slightly damaged; please contact a 4S shop for inspection." If the detection wire 16 in the collision-damaged circuit on the outer side of one of the collision surfaces 14 of the high-voltage connector 11 breaks, and the collision-damaged circuit on the inner side also breaks, meaning the control module receives both the outer and inner collision signals, then the high-voltage connector 11 is considered to be severely damaged and may endanger vehicle safety. Therefore, it is necessary to control the high-voltage system to shut down and prohibit the high-voltage system from being powered on, in order to avoid electric shock accidents and short-circuit fire risks caused by the high-voltage connector 11 breaking due to a vehicle collision.

[0033] In one embodiment, the sidewall of the high-voltage connector 11 housing can be configured as an integral square cylindrical structure. The detection wire 16 can be directly integrated into the collision surface 14 of the square cylindrical structure and extends out of the high-voltage connector 11 housing through two low-voltage pins 15 to connect with other components. In another embodiment, the detection wire 16 can also be independently formed into a flat block structure, which is in close contact with the collision surface 14 of the high-voltage connector 11. In another embodiment, the collision surface 14 of the high-voltage connector 11 can also be determined through collision simulation analysis. That is, the position of the high-voltage connector 11 and its surrounding environment in the vehicle are first determined, and the detection wire 16 is set in the specific areas on the high-voltage connector 11 where a collision may occur, obtained through simulation analysis. In another embodiment, the specific areas on the high-voltage connector 11 where a collision may occur can also be determined through simulation analysis, and the detection wire 16 is set in the collision surface 14 within this area.

[0034] This invention incorporates a collision damage circuit and a control module on the high-voltage connector 11, which is at risk of collision damage. When a vehicle collision occurs, the collision damage circuit detects whether the collision surface 14 of the high-voltage connector 11 is damaged, as well as the extent and degree of damage. If the collision is determined to be minor, the control module controls the reminder device to prompt for maintenance. If the collision is determined to be more serious, the control module controls the high-voltage system to shut down, thereby avoiding electric shock accidents and short-circuit fire risks caused by the high-voltage connector 11 breaking due to a vehicle collision.

[0035] Embodiments of the present invention also provide a vehicle including a high-pressure collision safety system as described in any of the above embodiments.

[0036] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0037] Reference Figure 5-6 The present invention also provides a high-voltage collision safety system control method for controlling the high-voltage system of the vehicle described above. The high-voltage system includes the aforementioned high-voltage collision safety system. A high-voltage connector 11 is connected to a high-voltage assembly controller, and a control module is integrated into the high-voltage assembly controller. For example, the motor controller of the motor integrates a control module, which acquires signals from the collision-damaged circuit located on the high-voltage connector 11 of the motor. Different high-voltage connectors 11 can correspond to different control modules. The control method includes:

[0038] S100: The collision-damaged circuit is activated, and the high-voltage assembly controller acquires the collision signal of the collision-damaged circuit in real time.

[0039] Specifically, the low-voltage system is powered on, and the collision-damaged circuit is connected. The control module in the high-voltage assembly controller monitors the status of the collision-damaged circuit. When a vehicle collides, if the collision surface 14 of the high-voltage connector 11 is partially or completely damaged, some of the detection wires 16 on the collision surface 14 will break. The control module will then receive a collision signal indicating that the resistance of the collision-damaged circuit has changed or that the circuit has been disconnected.

[0040] S200: The high-voltage assembly controller reports a collision signal via the bus. The vehicle controller receives the collision signal and controls the high-voltage system to power down and / or disables the high-voltage system from powering on.

[0041] Specifically, after receiving a collision signal, the control module in the high-voltage assembly controller reports the electrical signal status of each damaged circuit via bus messages, etc., which is then received and processed by the vehicle control unit (VCU). In a vehicle collision, if the VCU receives an inner collision signal from any of the inner damaged circuits among any high-voltage connectors 11, it controls the high-voltage system to power down and prohibits its power-on to ensure the safety of the occupants. It should be noted that the high-voltage system can be powered down directly or indirectly by disconnecting the high-voltage relay. In this case, a warning device can display information such as "High-voltage connector 11 is severely damaged, the vehicle cannot be powered on" on the instrument panel. If the VCU receives only one or more outer collision signals, it uses the high-voltage connector 11 information corresponding to those signals as a warning, displaying information such as "High-voltage connector 11 is slightly damaged, please contact a 4S shop for inspection" on the instrument panel to remind occupants to have it checked promptly. In other embodiments, the battery management system (BMS) can receive the collision signal and control the high-voltage system to power down and / or prohibit its power-on.

[0042] It should be noted that when starting the vehicle, the entire vehicle is powered on at low voltage. After the collision-damaged circuit is connected, if the vehicle controller receives a collision signal, it will prohibit high-voltage power-on and display a message such as "High-voltage connector 11 is seriously damaged; high-voltage power-on is prohibited" on the instrument panel via an alert device. If the vehicle controller does not receive a collision signal, high-voltage power-on is permitted, and the electrical signal of the collision-damaged circuit will be monitored in real time.

[0043] In this embodiment, when acquiring electrical signals for the collision-damaged circuits on the same collision surface 14 of each high-voltage connector 11, it can first be determined whether an outer collision signal is received. If no outer collision signal is received, an inner collision signal is generally not received either. In this case, it can be determined that the high-voltage connector 11 has not suffered any damage requiring attention. If an outer collision signal is received, it is further determined whether an inner collision signal is received. If an inner collision signal is received, that is, both the inside and outside of the collision surface 14 are damaged, then the high-voltage connector 11 poses a safety risk. It is necessary to prevent the high-voltage system from being powered on when starting the vehicle or to control the high-voltage system to be powered off during driving to avoid electric shock accidents and short-circuit fire risks caused by damage to the high-voltage connector 11. If no inner collision signal is received, that is, the collision surface 14 is only damaged on the outside, the high-voltage connector 11 has minor damage. A fault information is displayed on the instrument panel through a reminder device to remind the driver to check in time.

[0044] In another embodiment, when acquiring electrical signals from the collision-damaged circuits on the same collision surface 14 of each high-voltage connector 11, it can be simultaneously determined whether both an outer and inner collision signal are received. If both an outer and inner collision signal are received, then the collision surface 14 is damaged both internally and externally, posing a safety risk to the high-voltage connector 11. In this case, the high-voltage system should be prevented from being powered on when starting the vehicle or its power should be de-energized during driving to avoid electric shock accidents and short-circuit fire risks caused by damage to the high-voltage connector 11. If only an outer collision signal is received and no inner collision signal is received, then the collision surface 14 is only damaged externally, and the high-voltage connector 11 is slightly damaged. A fault message is displayed on the instrument panel via a warning device to remind the driver to check promptly. It should be noted that if an inner collision signal is received but no outer collision signal is received, the instrument panel should display a message such as "The high-voltage collision safety system is malfunctioning; please contact a 4S shop for inspection."

[0045] Optionally, after the vehicle controller receives any collision signal, it first obtains the vehicle's current speed. If the speed is lower than a preset first threshold, it controls the high-voltage system to shut down and prevents it from energizing. If the vehicle's current speed is higher than or equal to the preset first threshold, it can remind the driver to reduce speed through instrument displays or other means. Once the vehicle's current speed is lower than the preset first threshold, it controls the high-voltage system to shut down and prevents it from energizing again, ensuring the safety of shutting down the high-voltage system.

[0046] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0047] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0048] In some embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The system embodiments described above are merely illustrative; for example, the division of modules can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between modules may be electrical or other forms.

[0049] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0050] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0051] If the integrated module is implemented as a software functional module 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, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0052] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A high-voltage collision safety system, applied to a high-voltage system with a high-voltage connector, characterized in that, include: A collision-damaged circuit includes a detection wire mounted on the side wall of the high-voltage connector. The collision-damaged circuit is configured to disconnect the conductive detection wire and generate a collision signal when the high-voltage connector is damaged by a collision. The control module is used to receive the collision signal and control the high-voltage system to power down and / or prevent the high-voltage system from powering up; The high-voltage connector is provided with a positive conductor and a negative conductor arranged side by side on the same distribution plane. The side wall of the high-voltage connector parallel to the distribution plane serves as the collision surface, and the detection wire is installed on the collision surface of the high-voltage connector. The collision-damaged circuit has at least two detection wires connected in parallel. All the detection wires connected in parallel are distributed side by side on the same sidewall of the high-voltage connector, and the corresponding ends of all the detection wires connected in parallel are connected to a common low-voltage pin. The detection lead is integrated into the housing of the high-voltage connector; multiple scratches or grooves are arranged side by side on the detection lead, and the detection lead is prone to breakage at the scratches or grooves when subjected to external force; Two collision-damaged circuits are provided on the same side wall of the high-voltage connector housing, and the detection wires of the two collision-damaged circuits are respectively located on the inner and outer sides of the high-voltage connector housing.

2. The high-voltage collision safety system according to claim 1, characterized in that, The control module is used to receive the electrical signal of the collision-damaged circuit. The electrical signal includes the continuity status and resistance value between the two low-voltage pins at both ends of the detection wire. The collision signal is either a disconnection or a change in the resistance value.

3. The high-voltage collision safety system according to claim 1, characterized in that, The safety system also includes an alert module configured to generate an inner collision signal when the inner detection wire is disconnected, and an outer collision signal when the outer detection wire is disconnected. The control module is further configured to control the alert module to issue an alert when only the outer collision signal is received.

4. A vehicle, characterized in that, The system includes a high-pressure collision safety system as described in any one of claims 1 to 3.

5. A control method for a high-voltage collision safety system, characterized in that, A high-voltage system for controlling a vehicle, the high-voltage system comprising a high-voltage collision safety system as described in any one of claims 1 to 3, wherein the high-voltage connector is connected to a high-voltage assembly controller, the control module is integrated in the high-voltage assembly controller, and the control method comprises: The high-voltage assembly controller activates the collision-damaged circuit and acquires the collision signal of the collision-damaged circuit in real time. The high-voltage assembly controller reports the collision signal via the bus. The vehicle controller receives the collision signal and controls the high-voltage system to power down and / or disables the high-voltage system from powering on.

6. The high-voltage collision safety system control method according to claim 5, characterized in that, The vehicle controller receives the collision signal and controls the high-voltage system to power down, including: Obtain the vehicle's speed; When the driving speed is lower than the first threshold, the high-voltage system is powered down and / or the high-voltage system is prevented from being powered on.

Images