Vehicle crash redundancy unlocking system, method, and vehicle

Abstract

The application discloses a vehicle collision redundancy unlocking system, method and vehicle, and belongs to the technical field of vehicle control. The system comprises a redundancy power supply unit and a driving module. The redundancy power supply unit is used for supplying power to a vehicle body control module, a main power supply unit and a door lock motor of the vehicle when the vehicle is in collision. The driving module is used for controlling the redundancy power supply unit to disconnect with the main power supply unit according to the whole vehicle power supply loop state of the vehicle when the vehicle is in collision, so that the redundancy power supply unit is effectively isolated from an external power grid, the negative influence of the external power grid on the voltage of the redundancy power supply unit is reduced, the voltage stability of the redundancy power supply unit is improved, and the door lock motor is controlled according to the door control state of the vehicle body control module, so that the door is directly driven to be unlocked when the vehicle body control module cannot unlock the door, thereby ensuring that the door is smoothly unlocked after the vehicle is in collision, and the redundancy unlocking precision of the door is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, and in particular to a vehicle collision redundancy unlocking system, method and vehicle. Background Technology

[0002] In vehicle collisions, the ability to unlock car doors promptly is directly related to the safety of occupants. Currently, mainstream solutions generally employ redundant unlocking systems to address extreme situations where the vehicle's main power supply unit fails after a collision. This system typically features an independent redundant power supply unit that can quickly switch to backup power and supply power to the electronic door handles to unlock the doors if the main power supply unit's wiring breaks due to the collision or its battery is damaged.

[0003] However, the power supply circuit of the redundant unlocking system in this mainstream solution is usually exposed to the vehicle's external electrical interface. When the vehicle is involved in a serious collision that damages the vehicle body structure, the external power grid can easily be accidentally connected to the power supply circuit of the redundant unlocking system. Due to the complex impedance characteristics and drastic voltage fluctuations of the external power grid, once an electrical path is formed, it will directly lower the operating voltage of the redundant unlocking system, preventing the power of its redundant power supply unit from being effectively delivered to the actuator of the electronic door handle, such as the door lock motor. At this time, even if the energy storage inside the redundant unlocking system is sufficient, the electronic door handle will still be unable to perform the unlocking action due to insufficient drive voltage, resulting in the door being unable to unlock smoothly and the door's redundant unlocking accuracy being low. Summary of the Invention

[0004] The main objective of this application is to propose a vehicle collision redundancy unlocking system, method, and vehicle, which aims to ensure that the vehicle door can be unlocked smoothly after a vehicle collision, thereby improving the accuracy of door redundancy unlocking.

[0005] To achieve the above objectives, one aspect of this application proposes a vehicle collision redundancy unlocking system, the system comprising: A redundant power supply unit is provided, which is connected to the drive module and is also connected to the door lock motor, the main power supply unit and the body control module of the target vehicle. The redundant power supply unit is used to provide power to the body control module, the door lock motor and the drive module in the event of a vehicle collision. The drive module is connected to the body control module and the door lock motor respectively. In the event of a vehicle collision, the drive module controls the redundant power supply unit to disconnect from the main power supply unit according to the overall power supply circuit status of the target vehicle, and controls the door lock motor according to the door control status of the body controller, so as to unlock the door of the target vehicle.

[0006] In some embodiments, the redundant power supply unit includes: A charging terminal assembly, which is connected to the main power supply unit; The discharge electrode post assembly is connected to the body control module, the door lock motor and the drive module respectively.

[0007] In some embodiments, the redundant power supply unit includes: A first disconnecting switch assembly is disposed between the charging terminal assembly and the battery cell of the redundant power supply unit. The first disconnecting switch assembly is configured to connect the charging terminal assembly and the battery cell when open, and to disconnect the connection between the charging terminal assembly and the battery cell when closed.

[0008] In some embodiments, when the drive module controls the redundant power supply unit to disconnect from the main power supply unit based on the overall power supply circuit status of the target vehicle, it specifically performs the following operations: If an abnormality is detected in the vehicle power supply circuit, the first isolating switch assembly is controlled to close, thereby disconnecting the redundant power supply unit from the main power supply unit.

[0009] In some embodiments, the door control state includes an abnormal state, which indicates that the body control module abnormally controls the door lock motor to lock the door; when the drive module controls the door lock motor according to the door control state of the body controller, it specifically performs the following operations: If the abnormal state of the door control is detected, an unlocking drive signal is sent to the door lock motor to unlock the door.

[0010] In some embodiments, the door control state includes an abnormal state, which indicates that the body control module abnormally controls the door lock motor to lock the door; when the drive module controls the door lock motor according to the door control state of the body controller, it specifically performs the following operations: If a preset time elapses after the vehicle collision event, and a door locking signal is detected by the door lock motor, the door control state is determined to be the abnormal state.

[0011] In some embodiments, when the redundant power supply unit is used to provide power to the body control module, the door lock motor, and the drive module, it is specifically used to perform the following operations: Provide power to the body control module and the drive module; If the abnormal state of the door control is detected, power is supplied to the door lock motor.

[0012] In some embodiments, the redundant power supply unit is further configured to perform charging operations via the main power supply unit in the absence of the vehicle collision event.

[0013] To achieve the above objectives, another aspect of this application proposes a vehicle collision redundancy unlocking method, which is applied to the aforementioned vehicle collision redundancy unlocking system. The method includes: In the event of a vehicle collision, the redundant power supply unit provides power to the body control module, the door lock motor, and the drive module. The drive module controls the redundant power supply unit to disconnect from the main power supply unit based on the overall power supply circuit status of the target vehicle, and controls the door lock motor based on the door control status of the body controller, so as to unlock the door of the target vehicle.

[0014] To achieve the above objectives, another aspect of the embodiments of this application proposes a vehicle, which includes a body control module, a main power supply unit and a door lock motor, and the vehicle also includes the aforementioned vehicle collision redundancy unlocking system.

[0015] According to embodiments of this application, a vehicle collision redundancy unlocking system, method, and vehicle are provided, which are configured with a redundant power supply unit and a drive module. The redundant power supply unit is used to supply power to the vehicle's body control module, main power supply unit, and door lock motor when a collision occurs. The drive module is used to control the redundant power supply unit to disconnect from the main power supply unit according to the vehicle's overall power supply circuit status when a collision occurs, so as to effectively isolate the redundant power supply unit from the external power grid, reduce the negative impact of the external power grid on the voltage of the redundant power supply unit, and improve the voltage stability of the redundant power supply unit. At the same time, according to the door control status of the body control module, the drive module controls the door lock motor so that the door can be directly driven to unlock when the body control module cannot unlock the door, thereby ensuring that the door can be unlocked smoothly after a vehicle collision and improving the accuracy of door redundancy unlocking.

[0016] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the description, claims and drawings. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a vehicle collision redundancy unlocking system provided in this application; Figure 2 This is a structural diagram of the redundant power supply unit provided in this application; Figure 3 This is a schematic diagram illustrating the implementation process of a vehicle collision redundancy unlocking system provided in this application; Figure 4 This is a schematic diagram of the redundant power supply circuit provided in this application; Figure 5 This is a schematic diagram of the vehicle power supply circuit provided in this application; Figure 6 This is a schematic diagram of a door unlocking drive provided in this application; Figure 7 This is another schematic diagram of the door unlocking drive provided in this application. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit it. In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this application; they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this application as detailed in the appended claims.

[0019] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various concepts, but unless otherwise stated, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the words “if,” “when,” or “in response to a determination” as used herein may be interpreted as “when…” or “when…” or “in response to a determination.”

[0020] As used in this application, the terms "at least one", "multiple", "each", "any", etc., "at least one" includes one, two or more, "multiple" includes two or more, "each" refers to each of the corresponding multiples, and "any" refers to any one of the multiples.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0022] In vehicle collisions, the timely unlocking of car doors is directly related to the safety of occupants. Statistics show numerous cases where locked doors after a collision prevent occupants from escaping or hinder rescue efforts, severely delaying crucial rescue time. Therefore, vehicle design must explicitly require automatic door unlocking after a collision, ensuring doors unlock immediately to create an escape route for occupants.

[0023] Currently, mainstream solutions generally employ redundant unlocking systems to address extreme situations where the vehicle's main power supply unit fails after a collision. This system typically features an independent redundant power supply unit that can quickly switch to backup power and supply power to the electronic door handles when the main power supply unit's wiring breaks due to a collision or its battery is damaged, thereby unlocking the door. This solution, to a certain extent, addresses the problem of doors being unable to unlock electronically after a power outage caused by a collision, becoming an important means of improving vehicle safety performance.

[0024] However, this mainstream solution still has significant security vulnerabilities in practical applications. Specifically, the redundant unlocking system is usually directly electrically connected to the main power supply unit so that the main power supply unit can charge the redundant power supply unit in the redundant unlocking system when the vehicle is not in a collision. Under this design, the power supply circuit of the redundant unlocking system is exposed to the vehicle's external electrical interface and lacks an effective isolation device from the external power grid. When the vehicle is involved in a severe collision that damages the vehicle body structure, the external power grid can easily be accidentally connected to the power supply circuit of the redundant unlocking system. Due to the complex impedance characteristics and drastic voltage fluctuations of the external power grid, once an electrical path is formed, it will directly lower the operating voltage of the redundant unlocking system, preventing the power of its redundant power supply unit from being effectively delivered to the actuator of the electronic door handle, such as the door lock motor. At this time, even if the energy storage inside the redundant unlocking system is sufficient, the electronic door handle will still be unable to perform the unlocking action due to insufficient drive voltage, resulting in the door failing to unlock smoothly and the redundancy unlocking accuracy being low.

[0025] To address this, this application provides a vehicle collision redundancy unlocking system, method, and vehicle, which is equipped with a redundant power supply unit and a drive module. The redundant power supply unit supplies power to the vehicle's Body Control Module (BCM), main power supply unit, and door lock motor when a collision occurs. The drive module controls the redundant power supply unit to disconnect from the main power supply unit based on the vehicle's overall power supply circuit status when a collision occurs, thereby effectively isolating the redundant power supply unit from the external power grid, reducing the negative impact of the external power grid on the voltage of the redundant power supply unit, and improving the voltage stability of the redundant power supply unit. Simultaneously, based on the door control status of the Body Control Module, the drive module controls the door lock motor to directly drive the door to unlock when the Body Control Module cannot unlock the door, thus ensuring that the door unlocks smoothly after a vehicle collision and improving the accuracy of redundant door unlocking.

[0026] First, the vehicle collision redundancy unlocking system provided in this application will be described in detail below with reference to the accompanying drawings.

[0027] Reference Figure 1 , Figure 1 This is a structural diagram of a vehicle collision redundancy unlocking system provided in this application. The vehicle collision redundancy unlocking system provided in this application embodiment may include: The redundant power supply unit 100 is connected to the drive module 200. The redundant power supply unit 100 is also connected to the door lock motor 500, the main power supply unit 300, and the body control module 400 of the target vehicle, respectively. The redundant power supply unit 100 is used to provide power to the body control module 400, the door lock motor 500, and the drive module 200 in the event of a vehicle collision. The drive module 200 is connected to the body control module 400 and the door lock motor 500 respectively. In the event of a vehicle collision, the drive module 200 controls the redundant power supply unit 100 to disconnect from the main power supply unit 300 according to the overall power supply circuit status of the target vehicle, and controls the door lock motor 500 according to the door control status of the body control module 400 so as to unlock the door of the target vehicle.

[0028] Specifically, the target vehicle refers to a vehicle equipped with the vehicle collision redundancy unlocking system provided in this application embodiment, which may include, but is not limited to, the main power supply unit 300, the body control module 400, the door lock motor 500, and the redundancy unlocking system of this application embodiment. The redundancy unlocking system of this application embodiment integrates an independently powered redundant power supply unit 100 and a drive module 200 that separately drives the door lock motor 500 for unlocking. The body control module 400 is connected to the main power supply unit 300 to form a 12V vehicle power supply circuit, and is also connected in parallel to the redundant power supply unit 100 to form a redundant power supply circuit.

[0029] When a vehicle collision is detected (i.e., a vehicle collision event occurs), the drive module 200 monitors the status of the vehicle's power supply circuit. If the drive module 200 detects an abnormality in the vehicle's power supply circuit status, it controls the redundant power supply unit 100 to disconnect from the main power supply unit 300. At this time, the redundant power supply unit 100 supplies power to the body control module 400, and the power supply circuit of the body control module 400 switches from the main vehicle power supply circuit to the redundant power supply circuit. This effectively isolates the redundant power supply unit 100 from the external power grid, reducing the negative impact of the external power grid on the voltage of the redundant power supply unit 100, improving the voltage stability of the redundant power supply unit 100, and thus providing redundant power to the door lock motor 500 and the body control module 400, ensuring the normal operation of the vehicle collision redundant unlocking function. It should be understood that if the power supply circuit of the vehicle is detected to be in normal condition by the drive module 200, the disconnection operation will not be performed, so that the redundant power supply unit 100 and the main power supply unit 300 remain electrically connected, and the switching operation will not be performed, so that the power supply circuit of the body control module 400 remains the power supply circuit of the vehicle.

[0030] Subsequently, the body control module 400 supplies power to the door lock motor 500 and sends an unlocking drive signal to the door lock motor 500 to unlock it. The drive module 200 monitors the door control status of the body control module 400, indicating whether the door has successfully unlocked under the control of the body control module 400. If the drive module 200 detects that the door has not successfully unlocked, it controls the door lock motor 500 to directly unlock the door when the body control module 400 cannot do so. During this period, the redundant power supply unit 100 supplies power to the door lock motor 500. It should be understood that if the drive module 200 detects that the door has successfully unlocked, it means that the body control module 400 has successfully unlocked the door, and the drive module 200 does not perform any operation. This ensures that the door unlocks smoothly after a vehicle collision, thereby improving the accuracy of redundant door unlocking.

[0031] Among them, a vehicle collision event refers to the phenomenon of a vehicle collision. The detection method can be flexibly set according to the actual situation. For example, if a specific signal such as an airbag controller signal is detected, it is determined that a vehicle collision event has occurred, but it is not limited to this.

[0032] In some implementations, refer to Figure 1 and Figure 2 The aforementioned redundant power supply unit 100 may include: Charging terminal assembly 110 is connected to the main power supply unit 300; The discharge electrode post assembly 120 is connected to the body control module 400, the door lock motor 500 and the drive module 200 respectively.

[0033] It should be noted that the charging terminal assembly 110 may include, but is not limited to, at least one charging positive terminal and at least one charging negative terminal; the discharging terminal assembly 120 may include, but is not limited to, at least one discharging positive terminal and at least one discharging negative terminal.

[0034] In this embodiment, the redundant power supply unit 100 may include, but is not limited to, a charging terminal assembly 110 and a discharging terminal assembly 120. The charging terminal assembly 110 is electrically connected to the main power supply unit 300, so that the main power supply unit 300 charges the redundant power supply unit 100 through the charging terminal assembly 110 before a vehicle collision occurs (i.e., before a vehicle collision event), thereby maintaining the power of the redundant power supply unit 100. The discharging terminal assembly 120 is electrically connected to the body control module 400, the door lock motor 500, and the drive module 200, respectively, so that after a vehicle collision occurs (i.e., after a vehicle collision event), the redundant power supply unit 100 supplies power to each electronic component through the discharging terminal assembly 120, forming a redundant power supply circuit.

[0035] In some implementations, refer to Figure 1 and Figure 2 The aforementioned redundant power supply unit 100 may include: The first disconnecting switch assembly 130 is disposed between the charging terminal assembly 110 and the battery cell of the redundant power supply unit 100. The first disconnecting switch assembly 130 is configured to connect the charging terminal assembly 110 and the battery cell when it is turned on, and to disconnect the connection between the charging terminal assembly 110 and the battery cell when it is turned off.

[0036] It should be noted that the first disconnecting switch assembly 130 may include, but is not limited to, at least one first disconnecting switch. The number and type of disconnecting switches can be flexibly set according to the actual situation, for example, they may be metal-oxide-semiconductor field-effect transistors (MOSFETs), but are not limited to this.

[0037] In this embodiment, the redundant power supply unit 100 may also include, but is not limited to, a first disconnecting switch assembly 130, which is disposed between the charging terminal assembly 110 and the battery cell of the redundant power supply unit 100. When the first disconnecting switch assembly 130 is open, it connects the charging terminal assembly 110 and the battery cell of the redundant power supply unit 100, thereby electrically connecting the redundant power supply unit 100 to the main power supply unit 300. Alternatively, when the first disconnecting switch assembly 130 is closed, it disconnects the electrical connection between the charging terminal assembly 110 and the battery cell of the redundant power supply unit 100, thereby disconnecting the redundant power supply unit 100 from the main power supply unit 300.

[0038] In some implementations, refer to Figure 1 and Figure 2 When the aforementioned drive module 200 controls the redundant power supply unit 100 to disconnect from the main power supply unit 300 based on the overall power supply circuit status of the target vehicle, it specifically performs the following operations: If an abnormality is detected in the vehicle power supply circuit, the first isolating switch assembly 130 is controlled to close, thereby disconnecting the redundant power supply unit 100 from the main power supply unit 300.

[0039] In this embodiment, when a vehicle collision occurs (i.e., a vehicle collision event exists), the drive module 200 monitors the status of the vehicle's power supply circuit. The status of the vehicle's power supply circuit indicates whether the 12V vehicle power supply circuit is abnormal. If the drive module 200 detects that the vehicle power supply circuit is normal, it means the 12V vehicle power supply circuit is normal. At this time, the drive module 200 controls the first isolating switch assembly 130 to remain open, ensuring that the redundant power supply unit 100 and the main power supply unit 300 remain electrically connected, and no switching operation is performed. This maintains the power supply circuit of the body control module 400 as the vehicle power supply circuit, thus preserving the original power supply circuit. If the drive module 200 detects an abnormality in the vehicle power supply circuit, it indicates an anomaly in the 12V vehicle power supply circuit. In this case, the drive module 200 controls the first isolating switch assembly 130 to close, disconnecting the electrical connection between the charging terminal assembly 110 and the battery cells of the redundant power supply unit 100. This disconnects the redundant power supply unit 100 from the main power supply unit 300, allowing the redundant power supply unit 100 to supply power to the body control module 400. The power supply circuit of the body control module 400 switches from the vehicle power supply circuit to the redundant power supply circuit. This effectively isolates the redundant power supply unit 100 from the external power grid, reducing the negative impact of the external power grid on the voltage of the redundant power supply unit 100 and improving its voltage stability. This provides redundant power to the door lock motor 500 and the body control module 400, ensuring the normal operation of the vehicle collision redundant unlocking function.

[0040] The monitoring method for the vehicle power supply circuit status can be flexibly set according to actual conditions. For example, multiple current sampling points and multiple voltage sampling points can be set in the 12V vehicle power supply circuit. Current sampling is performed through each current sampling point to obtain multiple current sampling values, and voltage sampling is performed through each voltage sampling point to obtain multiple voltage sampling values. The weighted average of the multiple current sampling values ​​is calculated as the circuit current value, and the weighted average of the multiple voltage sampling values ​​is calculated as the circuit voltage value. At the same time, the charging current value of the redundant power supply unit 100 is detected. If the circuit current value exceeds the preset first current range, and / or the circuit voltage value exceeds the preset voltage range, and / or the charging current value exceeds the preset second current range, it indicates that the 12V vehicle power supply circuit is abnormal, and the status of the vehicle power supply circuit is determined to be abnormal. Otherwise, it indicates that the 12V vehicle power supply circuit is normal, and the status of the vehicle power supply circuit is determined to be normal.

[0041] In some implementations, refer to Figure 1 The aforementioned door control state may include an abnormal state, which indicates that the body control module 400 abnormally controls the door lock motor 500 to lock the door; when the drive module 200 controls the door lock motor 500 according to the door control state of the body controller, it specifically performs the following operations: If an abnormal state is detected in the door control status, an unlocking drive signal is sent to the door lock motor 500 to unlock the door.

[0042] In this embodiment, when a vehicle collision occurs (i.e., a vehicle collision event exists), the body control module 400 supplies power to the door lock motor 500 and sends an unlocking drive signal to the door lock motor 500 to unlock it. The drive module 200 monitors the door control status of the body control module 400. This status indicates whether the door has been successfully unlocked under the control of the body control module 400. An abnormal status indicates that the body control module 400 is abnormally controlling the door lock motor 500, meaning the door has not unlocked under the control of the body control module 400. A normal status indicates that the body control module 400 is normally controlling the door lock motor 500, meaning the door has been successfully unlocked under the control of the body control module 400. If the drive module 200 detects that the door control status is normal, it means that the body control module 400 has successfully unlocked the door, and the drive module 200 does not perform any operation in this case. If the drive module 200 detects an abnormal door monitoring status, it indicates that the body control module 400 has failed to unlock the door. In this case, the drive module 200 sends an unlocking drive signal to the door lock motor 500, enabling the door lock motor 500 to unlock the door even when the body control module 400 fails to do so. During this period, the redundant power supply unit 100 supplies power to the door lock motor 500. This ensures that the door unlocks smoothly after a vehicle collision, thereby improving the accuracy of redundant door unlocking.

[0043] In some implementations, refer to Figure 1 The aforementioned door control state may include an abnormal state, which indicates that the body control module 400 abnormally controls the door lock motor 500 to lock the door; when the drive module 200 controls the door lock motor 500 according to the door control state of the body controller, it specifically performs the following operations: If a door locking signal is detected by the door lock motor 500 after a preset time has elapsed following a vehicle collision, the door control status will be determined to be abnormal.

[0044] In this embodiment, when a vehicle collision occurs (i.e., a vehicle collision event occurs), the drive module 200 resets the timer to zero and starts timing. When a preset time has elapsed after the vehicle collision event, the drive module 200 checks whether it receives a door lock signal or a door unlock signal from the door lock motor 500. If the drive module 200 detects a door lock signal from the door lock motor 500, it indicates that the door has failed to unlock, and the drive module 200 determines the door control state to be abnormal. If the drive module 200 detects a door unlock signal from the door lock motor 500, it indicates that the door has successfully unlocked, and the drive module 200 determines the door control state to be normal. A normal state indicates that the body control module 400 is normally controlling the door lock motor 500. The preset time can be flexibly set according to actual conditions, for example, a preset time of five seconds, but is not limited to this. Here, when a vehicle collision occurs, the drive module 200 reserves a preset time for the body control module 400 to control the door lock motor 500 to unlock the door. If the door is not unlocked when the preset time is reached, the drive module 200 determines that the body control module 400 is malfunctioning and takes over the door unlocking behavior. This ensures that the door can be unlocked smoothly after a vehicle collision, thereby improving the door redundancy unlocking accuracy.

[0045] In some implementations, refer to Figure 1 When the redundant power supply unit 100 is used to provide power to the body control module 400, the door lock motor 500, and the drive module 200, it specifically performs the following operations: Provide power to the body control module 400 and the drive module 200; When an abnormal state is detected in the door control, power is supplied to the door lock motor 500.

[0046] In this embodiment, in the event of a vehicle collision (i.e., a vehicle collision event), the redundant power supply unit 100 continuously provides power support to the body control module 400 and the drive module 200. Simultaneously, if the drive module 200 detects an abnormal door monitoring status, it indicates that the body control module 400 has not successfully unlocked the door. In this case, the drive module 200 sends a power supply notification signal to the redundant power supply unit 100, enabling the redundant power supply unit 100 to provide power to the door lock motor 500 based on the power supply notification signal. This ensures that the door lock motor 500 has sufficient power to unlock the door, thus ensuring that the door unlocks smoothly after a vehicle collision and improving the accuracy of redundant door unlocking.

[0047] In some implementations, refer to Figure 1 The redundant power supply unit 100 is also used to perform charging operations through the main power supply unit 300 in the absence of a vehicle collision event.

[0048] In this embodiment, the redundant power supply unit 100 is electrically connected to the main power supply unit 300. Before a vehicle collision occurs (i.e., before a vehicle collision event occurs), the redundant power supply unit 100 obtains power from the main power supply unit 300 through its own charging terminal assembly 110 to charge itself, thereby maintaining its power level.

[0049] In some implementations, refer to Figure 1 A second disconnecting switch assembly 600 is provided between the aforementioned body control module 400 and the main power supply unit 300. The second disconnecting switch assembly 600 is configured to connect the body control module 400 and the main power supply unit 300 when it is open, and to disconnect the electrical connection between the body control module 400 and the main power supply unit 300 when it is closed.

[0050] It should be noted that the second disconnector assembly 600 may include, but is not limited to, at least one second disconnector. The number and type of disconnector can be flexibly configured according to actual conditions; for example, it may be a metal-oxide-semiconductor transistor, but it is not limited thereto.

[0051] In this embodiment, a second disconnecting switch assembly 600 is provided between the body control module 400 and the main power supply unit 300. Before a vehicle collision occurs, the second disconnecting switch assembly 600 remains open to connect the body control module 400 and the main power supply unit 300. At this time, the main power supply unit 300 supplies power to the body control module 400, and the power supply circuit of the body control module 400 is the power supply circuit for the entire vehicle. When a vehicle collision occurs (i.e., a vehicle collision event exists), the drive module 200 monitors the status of the target vehicle's overall power supply circuit. If the overall power supply circuit is detected to be normal, no switching operation is performed. At this time, the body control module 400 does not detect the redundant power supply circuit and controls the second isolating switch assembly 600 to remain open, so that the body control module 400 is connected to the main power supply unit 300, and the power supply circuit of the body control module 400 is the overall vehicle power supply circuit. If the overall vehicle power supply circuit is detected to be abnormal, the drive module 200 controls the first isolating switch assembly 130 to close, so that the redundant power supply unit 100 is disconnected from the main power supply unit 300, and the redundant power supply unit 100 supplies power to the body control module 400, forming a redundant power supply circuit. At this time, the body control module 400 detects the redundant power supply circuit and controls the second isolating switch assembly 600 to close, so that the body control module 400 is electrically disconnected from the main power supply unit 300, and the power supply circuit of the body control module 400 is switched from the overall vehicle power supply circuit to the redundant power supply circuit, thereby ensuring that subsequent unlocking operations have a certain power support.

[0052] In some embodiments, the redundant power supply unit 100 is an integrated 5Ah lithium battery power supply unit.

[0053] In this embodiment, the redundant power supply unit 100 is an integrated 5Ah lithium battery power supply unit, which can replace the supercapacitor unit and can meet the redundant unlocking requirements of multiple doors. Verification shows that unlocking a single door lock requires approximately 5-6A of current and takes approximately 100-200ms. Unlocking seven doors requires approximately 35-42A of current and takes 200ms per unlock. The 5Ah lithium battery can provide redundant unlocking power for at least five cycles at -30℃, fully meeting the safety requirements for collision unlocking.

[0054] To facilitate understanding of the vehicle collision redundancy unlocking system described in this application, an example of its actual application scenario is provided below.

[0055] Reference Figure 1 and Figure 2 In this application scenario, the target vehicle includes a main power supply unit 300, a body control module 400, a door lock motor 500, and a redundant unlocking system. The redundant unlocking system integrates a redundant power supply unit 100 with independent power supply and a drive module 200 that drives and unlocks the door lock motor 500 separately. The redundant power supply unit 100 is a lithium battery power supply unit with an integrated 5Ah capacity. It is equipped with a charging terminal assembly 110, a discharging terminal assembly 120, and a first isolation switch assembly 130. The first isolation switch assembly 130 is located between the charging terminal assembly 110 and the battery cell of the redundant power supply unit 100. A second isolation switch assembly 600 is provided between the body control module 400 and the main power supply unit 300.

[0056] The components are connected as follows: the main power supply unit 300 is electrically connected to the charging terminal assembly 110 of the redundant power supply unit 100; the main power supply unit 300 is electrically connected to the body control module 400 via the second disconnect switch assembly 600. The body control module 400 is electrically connected to the door lock motor 500 and also to the discharge terminal assembly 120 of the redundant power supply unit 100. The drive module 200 is electrically connected to the door lock motor 500 and also to the discharge terminal assembly 120 of the redundant power supply unit 100. The door lock motor 500 is electrically connected to the discharge terminal assembly 120 of the redundant power supply unit 100.

[0057] Before a collision occurs, the redundant power supply unit 100 draws power from the main power supply unit 300 for charging, thereby maintaining its power level. Furthermore, the second disconnect switch assembly 600 remains open, allowing the body control module 400 to connect to the main power supply unit 300. At this time, the main power supply unit 300 supplies power to the body control module 400, and the power supply circuit of the body control module 400 becomes the vehicle's power supply circuit. If the drive module 200 detects an airbag controller signal, it determines that a collision has occurred, indicating a vehicle collision event. In this case, the following operations are performed: Figure 3 As shown: The drive module 200 monitors whether the vehicle's overall power supply circuit is abnormal. If so, it indicates an abnormality in the 12V vehicle power supply circuit. At this time, the drive module 200 controls the first isolating switch assembly 130 to close, thereby disconnecting the redundant power supply unit 100 from the main power supply unit 300, and the redundant power supply unit 100 supplies power to the body control module 400, forming a redundant power supply circuit. Figure 4 As shown, when the body control module 400 detects a redundant power supply circuit, it controls the second isolating switch assembly 600 to close, thereby disconnecting the body control module 400 from the main power supply unit 300. The power supply circuit of the body control module 400 then switches from the vehicle power supply circuit to the redundant power supply circuit. If not, it indicates that the 12V vehicle power supply circuit is normal. In this case, the drive module 200 controls the first isolating switch assembly 130 to remain open, maintaining the electrical connection between the redundant power supply unit 100 and the main power supply unit 300, and without performing a switching operation. This ensures that the power supply circuit of the body control module 400 remains the vehicle power supply circuit. Figure 5 As shown, this maintains the original power supply circuit.

[0058] After determining the power supply circuit for the body control module 400, the drive module 200 resets the timer to zero and starts timing. When the preset time following a vehicle collision event is reached: if the drive module 200 detects a door lock signal from the door lock motor 500, it indicates that the door has failed to unlock. At this time, the drive module 200 determines the door control state to be abnormal and sends an unlock drive signal to the door lock motor 500, so that the door lock motor 500 can unlock the door even when the body control module 400 cannot do so. During this period, the redundant power supply unit 100 supplies power to the door lock motor 500. Figure 6 As shown. If the drive module 200 detects the door unlock signal fed back by the door lock motor 500, it indicates that the door has been successfully unlocked. At this time, the drive module 200 determines the door control state to be normal and does not perform any operation, such as... Figure 7 As shown.

[0059] In simple terms, the redundant unlocking system of this application embodiment provides redundant power supply to both the door lock motor 500 and the body control module 400, and also provides redundant drive signals to the door lock motor 500. If the body control module 400 is located in a position that is not easily damaged by a collision, and its power supply / drive circuit with each door lock motor 500 is safe and reliable, then the power supply circuit of the body control module 400 can be connected to both the 12V power supply circuit of the main power supply unit 300 and the power supply circuit of the redundant power supply unit 100 in parallel. When a collision occurs, the redundant unlocking system receives a signal from the airbag controller and starts to detect whether the 12V power supply circuit is abnormal. If so, the redundant unlocking system directly disconnects the first isolating switch assembly 130 to block its connection with the main power supply unit 300 and supplies power to the body control module 400, making the power supply circuit of the body control module 400 a redundant power supply circuit. Otherwise, the redundant unlocking system does not perform a switching operation, so that the power supply circuit of the body control module 400 remains a 12V power supply circuit. Subsequently, the redundant unlocking system reserves time for the body control module 400 to drive the door unlocking. If the door is successfully unlocked when the time is up, the redundant unlocking system does not need to supply power and drive the door lock motor 500 again. Otherwise, the redundant unlocking system immediately supplies power and drives the door until the door is unlocked.

[0060] Secondly, the implementation steps of a vehicle collision redundancy unlocking method provided in this application embodiment will be described in detail below with reference to the accompanying drawings.

[0061] This application provides a vehicle collision redundancy unlocking method, which can be applied to a terminal, a server, or software running on either a terminal or a server. The terminal can be a tablet, laptop, desktop computer, etc., but is not limited to these. The server can be an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks (CDN), and big data and artificial intelligence platforms. Furthermore, the server can be a node server in a blockchain network, but is not limited to these. Blockchain is a new application model of computer technologies such as distributed data storage, peer-to-peer transmission, consensus mechanisms, and encryption algorithms.

[0062] This application provides a vehicle collision redundancy unlocking method, applied to the aforementioned vehicle collision redundancy unlocking system. The method includes: In the event of a vehicle collision, power is supplied to the body control module, door lock motor and drive module through redundant power supply units; The drive module controls the redundant power supply unit to disconnect from the main power supply unit based on the overall power supply circuit status of the target vehicle, and controls the door lock motor according to the door control status of the body controller, so as to unlock the door of the target vehicle.

[0063] The content of the above system embodiments is applicable to this method embodiment. The specific functions implemented in this method embodiment are the same as those in the above system embodiments, and the beneficial effects achieved are also the same as those achieved in the above system embodiments.

[0064] Finally, this application provides a vehicle that includes a body control module, a main power supply unit, and a door lock motor, and also includes the aforementioned vehicle collision redundancy unlocking system.

[0065] The aforementioned vehicles can be private cars, such as sedans, sport utility vehicles (SUVs), multi-purpose vehicles (MPVs), or pickup trucks, or commercial vehicles, such as vans, buses, small trucks, or large trailers, or gasoline vehicles or new energy vehicles such as hybrid or pure electric vehicles.

[0066] The content of the above system embodiments is applicable to this vehicle embodiment. The specific functions implemented in this vehicle embodiment are the same as those in the above system embodiments, and the beneficial effects achieved are also the same as those achieved in the above system embodiments.

[0067] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0068] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0069] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0070] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0071] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application 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 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.

[0072] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0073] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0074] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0075] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0076] If the integrated unit is implemented as 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 this application, 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 multiple 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 of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0077] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A vehicle collision redundancy unlocking system, characterized in that, The system includes: A redundant power supply unit is provided, which is connected to the drive module and is also connected to the door lock motor, the main power supply unit and the body control module of the target vehicle. The redundant power supply unit is used to provide power to the body control module, the door lock motor and the drive module in the event of a vehicle collision. The drive module is connected to the body control module and the door lock motor respectively. In the event of a vehicle collision, the drive module controls the redundant power supply unit to disconnect from the main power supply unit according to the overall power supply circuit status of the target vehicle, and controls the door lock motor according to the door control status of the body controller, so as to unlock the door of the target vehicle.

2. The system according to claim 1, characterized in that, The redundant power supply unit includes: A charging terminal assembly, which is connected to the main power supply unit; The discharge electrode post assembly is connected to the body control module, the door lock motor and the drive module respectively.

3. The system according to claim 2, characterized in that, The redundant power supply unit includes: A first disconnecting switch assembly is disposed between the charging terminal assembly and the battery cell of the redundant power supply unit. The first disconnecting switch assembly is configured to connect the charging terminal assembly and the battery cell when open, and to disconnect the connection between the charging terminal assembly and the battery cell when closed.

4. The system according to claim 3, characterized in that, When the drive module controls the redundant power supply unit to disconnect from the main power supply unit based on the overall power supply circuit status of the target vehicle, it specifically performs the following operations: If an abnormality is detected in the vehicle power supply circuit, the first isolating switch assembly is controlled to close, thereby disconnecting the redundant power supply unit from the main power supply unit.

5. The system according to claim 1, characterized in that, The door control state includes an abnormal state, which indicates that the body control module abnormally controls the door lock motor to lock the door. When the drive module controls the door lock motor according to the door control state of the body controller, it specifically performs the following operations: If the abnormal state of the door control is detected, an unlocking drive signal is sent to the door lock motor to unlock the door.

6. The system according to claim 1, characterized in that, The door control state includes an abnormal state, which indicates that the body control module abnormally controls the door lock motor to lock the door. When the drive module controls the door lock motor according to the door control state of the body controller, it specifically performs the following operations: If a preset time elapses after the vehicle collision event, and a door locking signal is detected by the door lock motor, the door control state is determined to be the abnormal state.

7. The system according to claim 1, characterized in that, When the redundant power supply unit is used to provide power to the body control module, the door lock motor, and the drive module, it specifically performs the following operations: Provide power to the body control module and the drive module; If the abnormal state of the door control is detected, power is supplied to the door lock motor.

8. The system according to claim 1, characterized in that, The redundant power supply unit is also used to perform charging operations through the main power supply unit in the absence of the vehicle collision event.

9. A method for unlocking vehicle collision redundancy, characterized in that, The method, applied to the vehicle collision redundancy unlocking system as described in any one of claims 1-8, comprises: In the event of a vehicle collision, the redundant power supply unit provides power to the body control module, the door lock motor, and the drive module. The drive module controls the redundant power supply unit to disconnect from the main power supply unit based on the overall power supply circuit status of the target vehicle, and controls the door lock motor based on the door control status of the body controller, so as to unlock the door of the target vehicle.

10. A vehicle, the vehicle comprising a body control module, a main power supply unit, and a door lock motor, characterized in that, The vehicle also includes a vehicle collision redundancy unlocking system as described in any one of claims 1-8.

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