Battery pack falling control system, method and equipment of vehicle and vehicle

Abstract

The embodiment of the invention provides a battery pack falling control system, method and equipment of a vehicle and the vehicle. Relates to the technical field of vehicles and comprises an induction unit, a control unit, a hydraulic power unit, a control switch, a separation oil cylinder and a mechanical unlocking device, the hydraulic power unit is connected with the separation oil cylinder through a hydraulic pipeline, the separation oil cylinder is mechanically connected with the mechanical unlocking device, and the control switch is arranged on the hydraulic pipeline. And the piston is positioned between the hydraulic power unit and the separation oil cylinder. When the system works, the control unit collects vehicle state data through the sensing unit, and sends an instruction to the control switch when it is determined that the battery pack falling condition is met, so that the hydraulic power unit drives the separation oil cylinder to act, and the mechanical unlocking device is driven to enable the battery pack to fall off from a vehicle body. According to the system, the resettable executing mechanism is constructed by reusing the existing hydraulic system of the vehicle, and the economical efficiency and reusability of the system are remarkably improved while the safety is guaranteed.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a battery pack detachment control system, method, device, and vehicle for a vehicle. Background Technology

[0002] With the rapid growth in the number of new energy vehicles, the protection of high-voltage battery packs has become a core aspect of the passive safety design of vehicles. In emergency scenarios such as severe collisions or thermal runaway within the battery, if the battery pack remains rigidly connected to the vehicle body, it may not only exacerbate battery damage and short-circuit risks due to structural compression, but may also cause thermal runaway to spread to the passenger compartment, leading to catastrophic accidents such as fires and explosions, seriously threatening the safety of passengers. To address this severe challenge, battery pack detachment control systems, which can quickly detach the battery pack from the vehicle body in emergency situations, are gradually being applied in vehicle design.

[0003] In related technologies, existing battery pack detachment control systems typically rely on a separate power unit (such as a gunpowder detonation device or a compression spring) to drive the battery pack detach from the vehicle body in emergency situations. However, such devices are usually single-use and must be replaced entirely after activation, resulting in poor system reusability and high maintenance costs. Summary of the Invention

[0004] This application provides a battery pack detachment control system, method, device, and vehicle for improving the reusability of the battery pack detachment control system and reducing its maintenance costs.

[0005] In a first aspect, embodiments of this application provide a battery pack detachment control system for a vehicle, comprising: a sensing unit, a control unit, a hydraulic power unit, a control switch, a separation cylinder, and a mechanical unlocking device. The hydraulic power unit is connected to the separation cylinder via a hydraulic pipeline, the separation cylinder is mechanically connected to the mechanical unlocking device, and the control switch is disposed on the hydraulic pipeline and located between the hydraulic power unit and the separation cylinder.

[0006] The control unit is used to determine whether the battery pack detachment condition is met based on the vehicle status data collected by the sensing unit, and when the battery pack detachment condition is met, it sends a battery pack detachment command to the control switch.

[0007] The control switch is used to control the hydraulic power unit to deliver high-pressure oil to the separation cylinder according to the battery pack detachment command;

[0008] The separation cylinder is used to drive the mechanical unlocking device to detach the battery pack from the vehicle body under the drive of the high-pressure oil.

[0009] In one possible implementation, the vehicle status data includes vehicle driving data and / or battery status data, and the sensing unit includes:

[0010] Sensor module, thermal runaway detection module, and data transmission module;

[0011] The sensor module is used to collect the vehicle's driving data;

[0012] The thermal runaway detection module is used to acquire the battery status data;

[0013] The data transmission module is used to transmit the vehicle driving data and / or battery status data to the control unit.

[0014] Secondly, embodiments of this application provide a method for controlling the detachment of a vehicle's battery pack, applied to a control unit in a vehicle's battery pack detachment control system as described in any of the first aspects, the method comprising:

[0015] Acquire vehicle status data collected by the sensing unit;

[0016] Based on the vehicle status data, determine whether the conditions for battery pack detachment are met;

[0017] When the battery pack detachment conditions are met, a battery pack detachment command is sent to the control switch so that the high-pressure oil pump delivers high-pressure oil to the separation cylinder, thereby causing the separation cylinder to drive the mechanical unlocking device to detach the battery pack from the vehicle body under the drive of the high-pressure oil.

[0018] In one possible implementation, determining whether the battery pack detachment condition is met based on the vehicle status data includes:

[0019] Determine at least one vehicle status threshold corresponding to the vehicle status data;

[0020] Based on the at least one vehicle status threshold and the vehicle status data, determine whether the battery pack detachment condition is met.

[0021] In one possible implementation, the vehicle status data includes vehicle driving data and / or battery status data, and at least one vehicle status threshold includes a vehicle driving threshold and / or a battery status threshold.

[0022] The step of determining whether the battery pack detachment condition is met based on the at least one vehicle state threshold and the vehicle state data includes:

[0023] If the vehicle driving data is greater than the vehicle driving threshold, and / or the battery status data is greater than the battery status threshold, then the battery pack detachment condition is determined to be met.

[0024] If the vehicle driving data is less than or equal to the vehicle driving threshold, and the battery status data is less than or equal to the battery status threshold, then it is determined that the battery pack detachment condition is not met.

[0025] In one possible implementation, the vehicle driving data is the current vehicle acceleration, the battery status data is the current battery temperature, the vehicle driving threshold is the acceleration threshold, and the battery status threshold is the battery temperature threshold.

[0026] The step of determining whether the battery pack detachment condition is met based on the at least one vehicle state threshold and the vehicle state data includes:

[0027] If the current vehicle acceleration is greater than the acceleration threshold, and / or the current battery temperature is greater than the battery temperature threshold, then the battery pack detachment condition is determined to be met.

[0028] If the current vehicle acceleration is less than or equal to the acceleration threshold and the current battery temperature is less than or equal to the battery temperature threshold, then the battery pack detachment condition is determined not to be met.

[0029] In one possible implementation, the control unit is a brake-by-wire controller.

[0030] Thirdly, embodiments of this application provide an electronic device, including: a memory and a processor;

[0031] The memory stores computer-executed instructions;

[0032] The processor executes computer execution instructions stored in the memory, causing the processor to perform the second aspect and / or various possible implementations of the second aspect as described above.

[0033] Fourthly, embodiments of this application provide a vehicle, including:

[0034] Vehicle body;

[0035] And a battery pack detachment control system for a vehicle as described in any of the first aspects, or an electronic device as described in the third aspect.

[0036] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the second aspect and / or various possible implementations of the second aspect.

[0037] Sixthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the second aspect and / or various possible implementations of the second aspect as described above.

[0038] This application provides a battery pack detachment control system, method, device, and vehicle. The system includes a sensing unit, a control unit, a hydraulic power unit, a control switch, a separation cylinder, and a mechanical unlocking device. The hydraulic power unit and the separation cylinder form a transmission circuit via hydraulic lines. The control switch is located on the hydraulic lines between the hydraulic power unit and the separation cylinder. The separation cylinder and the mechanical unlocking device maintain mechanical linkage. During operation, the sensing unit collects vehicle status data and transmits it to the control unit. The control unit determines whether the battery pack detachment conditions are met based on the vehicle status data. When the conditions are met, it sends a detachment command to the control switch. The control switch, based on the battery pack detachment command, controls the hydraulic power unit to deliver high-pressure hydraulic fluid to the separation cylinder. Driven by the high-pressure hydraulic fluid, the separation cylinder drives the mechanical unlocking device to detach the battery pack from the vehicle body. This system utilizes the vehicle's existing hydraulic power source and constructs a resettable hydraulic drive structure, achieving rapid battery pack detachment while ensuring safety and significantly improving the system's economy and reusability. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0040] Figure 1 A schematic diagram illustrating the application scenarios provided in the embodiments of this application;

[0041] Figure 2 A schematic diagram of the battery pack detachment control system for the vehicle provided in this application;

[0042] Figure 3 This is a schematic diagram of the structure of the sensing unit provided in the embodiments of this application;

[0043] Figure 4 A flowchart illustrating an embodiment of the battery pack detachment control method for a vehicle provided in this application;

[0044] Figure 5 A flowchart illustrating Embodiment 2 of the battery pack detachment control method for vehicles provided in this application;

[0045] Figure 6 A flowchart illustrating Embodiment 3 of the battery pack detachment control method for vehicles provided in this application;

[0046] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0047] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0048] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0049] With the popularization of new energy vehicles, the safety of high-voltage battery packs, as the core power source of vehicles, has become a key indicator for measuring the passive safety performance of the entire vehicle. During vehicle operation, if the battery pack triggers thermal runaway due to a severe collision, vehicle body compression, or internal malfunction, it will cause a series of chain reactions: not only will it cause an instantaneous power interruption and loss of driving ability, but it may also cause catastrophic accidents such as fire or even explosion due to internal short circuits and rapid temperature rise, posing a serious threat to the life and property safety of passengers.

[0050] To address these severe challenges, designing a battery pack detachment control system capable of rapidly and reliably separating the battery pack from the vehicle body under emergency conditions is gradually becoming a key technology in vehicle safety design. In related technologies, existing battery pack detachment control systems typically rely on an independent power unit to perform the separation action, such as using a gunpowder detonation device or a pre-compressed spring mechanism. Upon receiving a trigger signal, these devices release a large instantaneous amount of energy to drive the mechanical structure, thereby achieving rapid detachment of the battery pack.

[0051] However, these separation devices based on the principle of single-use have significant limitations. Whether it's gunpowder detonation or a compressed spring, they are usually not reset after activation and must be replaced entirely. This directly results in extremely poor system reusability and high subsequent maintenance costs.

[0052] To address the aforementioned issues, the inventors innovatively propose abandoning such independent power units and instead utilizing the existing hydraulic power source of the vehicle's brake-by-wire system to construct a battery pack detachment control system based on brake-by-wire hydraulics. This system includes a sensing unit, a control unit, a hydraulic power unit, a control switch, a separation cylinder, and a mechanical unlocking device. The hydraulic power unit is connected to the separation cylinder via hydraulic lines, and the separation cylinder is mechanically connected to the mechanical unlocking device. The control switch is located on the hydraulic lines, between the hydraulic power unit and the separation cylinder. The control unit determines whether the battery pack detachment conditions are met based on vehicle status data collected by the sensing unit, and sends a battery pack detachment command to the control switch when the conditions are met. The control switch controls the hydraulic power unit to deliver high-pressure hydraulic fluid to the separation cylinder based on the battery pack detachment command. The separation cylinder, driven by the high-pressure hydraulic fluid, drives the mechanical unlocking device to detach the battery pack from the vehicle body. The high-pressure hydraulic fluid originates from the existing hydraulic power source of the vehicle's brake-by-wire system, eliminating the need for an additional independent power unit for the battery pack detachment function. This design leverages the mature hydraulic control logic of the brake-by-wire system to ensure stable and controllable unlocking force. Ultimately, while ensuring the passive safety performance of the vehicle, a highly integrated, repeatedly triggered, and significantly reduced maintenance cost solution was developed, which significantly improves the reusability and economy of the vehicle's battery pack detachment control system.

[0053] Figure 1 This is a schematic diagram illustrating an application scenario provided in an embodiment of this application. Please refer to [link / reference]. Figure 1 It includes a sensing unit, a control unit, and an execution unit, with the control unit connected to both the sensing unit and the execution unit. If the control unit determines, based on the vehicle status data collected by the sensing unit, that the conditions for battery pack detachment are met, it can send a battery pack detachment command to the execution unit, causing the execution unit to control the detachment of the battery pack from the vehicle body.

[0054] The technical solution of this application and how it solves the above-mentioned technical problems will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0055] Figure 2 A schematic diagram of the battery pack detachment control system for the vehicle provided in this application. Please refer to [link / reference]. Figure 2The vehicle's battery pack detachment control system 10 includes a sensing unit 11, a control unit 12, a hydraulic power unit 13, a control switch 14, a separation cylinder 15, and a mechanical unlocking device 16. The hydraulic power unit 13 and the separation cylinder 15 are connected through a hydraulic line 17. The separation cylinder 15 is mechanically connected to the mechanical unlocking device 16. The control switch 14 is located on the hydraulic line 17 and between the hydraulic power unit 13 and the separation cylinder 15.

[0056] The control unit 12 is used to determine whether the battery pack detachment condition is met based on the vehicle status data collected by the sensing unit 11, and to send a battery pack detachment command to the control switch 14 when the battery pack detachment condition is met.

[0057] In one specific implementation, the control unit 12 may be implemented by the controller of the brake-by-wire system (i.e., the brake-by-wire controller).

[0058] Control switch 14 is used to control the hydraulic power unit 13 to deliver high-pressure oil to the separation cylinder according to the battery pack detachment command;

[0059] The separation cylinder 15 is used to drive the mechanical unlocking device 16 to detach the battery pack from the vehicle body under the drive of high-pressure oil.

[0060] Optionally, the hydraulic power unit 13 can be a high-pressure oil pump in the vehicle's existing brake-by-wire system, and the control switch 14 can be a solenoid valve; the separation cylinder 15 and the mechanical unlocking device 16 can be installed at the bottom of the vehicle, at the edge of the battery pack.

[0061] In one specific implementation, the mechanical unlocking device 16 can be a battery pack release latch, which allows the battery pack to detach from the vehicle body when the release latch is opened.

[0062] In this embodiment, the vehicle's battery pack detachment control system may include a sensing unit, a control unit, a hydraulic power unit, a control switch, a separation cylinder, and a mechanical unlocking device. When the control unit determines that the battery pack detachment conditions are met based on vehicle status data collected by the sensing unit, the control unit sends a battery pack detachment command to the control switch, activating the hydraulic circuit. The hydraulic power unit then delivers high-pressure hydraulic fluid to the separation cylinder, driving the mechanical unlocking device to perform the unlocking action, thereby achieving rapid detachment of the battery pack from the vehicle body. In this process, the vehicle's existing hydraulic power source can be fully utilized, eliminating the need for an independent power unit. This achieves rapid and reliable passive detachment of the battery pack at a lower cost, effectively improving the vehicle's safety protection capabilities under dangerous conditions such as collisions.

[0063] Furthermore, the battery pack detachment control system for vehicles provided in this application complies with the highest level of internationally recognized standard for functional safety of electronic and electrical systems of road vehicles (ISO26262ASILD). Compared with disposable explosive detonation devices or compression springs in related technologies, this solution constructs a reusable hydraulic drive structure by using the existing hydraulic power source (high-pressure oil pump) of the vehicle's brake-by-wire system. After the battery pack detachment is triggered, the core components such as the separation cylinder and control switch can be reset simply through the hydraulic depressurization process of the brake-by-wire system, without the need to replace the entire system components. This allows the system to be used repeatedly after triggering, solving the reusability problem of "trigger and replace" in traditional devices and significantly extending the system's service life.

[0064] Figure 3 This is a schematic diagram of the sensing unit provided in an embodiment of this application. Please refer to... Figure 3 The vehicle status data includes vehicle driving data and / or battery status data. Based on the above system embodiment, the sensing unit 11 may include:

[0065] Sensor module 111, thermal runaway detection module 112, and data transmission module 113;

[0066] The sensor module 111 is used to collect vehicle driving data, which mainly describes the vehicle's dynamic control and driving status.

[0067] Optionally, vehicle driving data may include, but is not limited to, vehicle acceleration, vehicle speed, and steering wheel angle.

[0068] Optionally, the sensor module 111 can perform high-frequency sampling at a specific frequency to ensure that vehicle driving data can be captured in real time. For example, the high-frequency sampling frequency is 100 Hz.

[0069] The thermal runaway detection module 112 is used to acquire battery status data, which can directly reflect the electrical, thermal and health status of the power battery.

[0070] Optionally, battery status data may include, but is not limited to, battery temperature, battery voltage, and remaining battery charge (state of charge).

[0071] In one specific implementation, the thermal runaway detection module 112 can communicate with the Battery Management System (BMS) and also acquire battery status data from the BMS system at a set frequency (e.g., 100Hz).

[0072] The data transmission module 113 is used to transmit vehicle driving data and / or battery status data to the control unit 12.

[0073] Optionally, the data transmission module 113 can transmit vehicle driving data and / or battery status data via a Controller Area Network (CAN) bus. Specifically, the data transmission module 113 can connect to the vehicle's existing CAN bus network, utilizing the CAN protocol's strong anti-interference capabilities, low transmission latency (typically in the millisecond range), and support for multi-node communication to transmit vehicle driving data and / or battery status data to the control unit 12.

[0074] In this embodiment, the sensing unit includes a sensor module, a thermal runaway detection module, and a data transmission module. The sensor module collects vehicle driving data, the thermal runaway detection module acquires battery status data, and the data transmission module transmits the vehicle driving data and / or battery status data to the control unit. In this process, the sensor module and the thermal runaway detection module enable the synchronous and independent collection of these two critical safety data types—vehicle driving data and battery status data—providing comprehensive and real-time raw data support for the control unit to determine whether the battery pack detachment conditions are met.

[0075] Figure 4 This is a flowchart illustrating an embodiment of the battery pack detachment control method for vehicles provided in this application. Please refer to... Figure 4 This method is applied to the control unit in the vehicle's battery pack detachment control system, including:

[0076] S401. Acquire vehicle status data collected by the sensing unit.

[0077] In this step, the control unit can acquire vehicle status data collected by the sensing unit. This vehicle status data may include vehicle driving data collected by the sensor module and / or battery status data acquired by the thermal runaway detection module; the control unit is a brake-by-wire controller.

[0078] For example, a brake-by-wire controller can acquire vehicle status data collected by a sensing unit.

[0079] S402. Based on the vehicle status data, determine whether the conditions for battery pack detachment are met.

[0080] In this step, the control unit can determine at least one state threshold corresponding to the vehicle state data, and determine whether the battery pack detachment condition is met based on the at least one vehicle state threshold and the vehicle state data.

[0081] For example, if the vehicle status data is the current battery temperature, the brake-by-wire controller can determine the battery temperature threshold corresponding to the current battery temperature. By comparing the current battery temperature with the battery temperature threshold, it can determine whether the battery pack detachment condition is met.

[0082] S403. When the battery pack detachment conditions are met, a battery pack detachment command is sent to the control switch so that the hydraulic power unit delivers high-pressure oil to the separation cylinder, thereby causing the separation cylinder to drive the mechanical unlocking device to detach the battery pack from the vehicle body under the drive of the high-pressure oil.

[0083] In this step, when the control unit determines that the battery pack detachment conditions are met, it can send a battery pack detachment command to the control switch. Upon receiving the command, the control switch switches the hydraulic circuit, connecting the hydraulic power unit to the separation cylinder. Once the circuit is connected, the hydraulic power unit begins supplying high-pressure hydraulic fluid to the separation cylinder. Driven by the high-pressure fluid, the separation cylinder generates linear displacement or thrust, which in turn drives the connected mechanical unlocking device, releasing the mechanical connection between the battery pack and the vehicle body, thus achieving rapid and reliable detachment of the battery pack.

[0084] In one optional implementation, the control switch can be a one-position two-way or two-position three-way solenoid valve. Under normal vehicle operation, the solenoid valve is de-energized, closing the passage between the hydraulic power unit and the release cylinder, leaving the release cylinder depressurized and ensuring the battery pack is securely locked. When the control switch receives a battery pack detachment command, its internal valve core displaces, switching the oil circuit to establish a high-pressure oil supply passage between the hydraulic power unit and the release cylinder, thereby activating the hydraulic circuit required to perform the detachment action.

[0085] It should be noted that the system response performance and output force of the vehicle's battery pack detachment control system can be calibrated according to the specific vehicle model and battery pack structure. For example, the response time of the solenoid valve after receiving the battery pack detachment command can be controlled within 5ms, quickly completing the oil circuit switching; after the hydraulic circuit is activated, the high-pressure oil drives the separation cylinder to generate an unlocking force of no less than 15 kN within 180ms, ensuring complete separation of the battery pack from the vehicle body within this time window. It should be understood that the above-mentioned time and force thresholds are calibrable parameters and can be adapted and adjusted according to the actual needs of different vehicle models, such as battery pack weight, mechanical lock structure strength, and collision safety regulations, to ensure reliable detachment while avoiding excessive impact that could cause additional damage to the vehicle body or battery pack.

[0086] Optionally, during the high-pressure oil delivery process, the hydraulic power unit can stably output oil according to a preset pressure threshold, ensuring that the driving force obtained by the separation cylinder meets the unlocking requirements without causing damage to the mechanical unlocking device or the vehicle body connection structure due to excessive pressure.

[0087] Furthermore, while the hydraulic cylinder drives the mechanical unlocking device, the control unit can simultaneously send linkage signals to other vehicle systems. For example, it can send commands to the Body Control Module (BCM) to trigger hazard warning light flashing and buzzer alarms, ensuring that surrounding vehicles and pedestrians can promptly detect abnormal vehicle conditions and effectively avoid them, thereby preventing secondary accidents.

[0088] For example, after determining that the battery pack detachment conditions are met, the brake-by-wire controller can send a detachment command to the solenoid valve. The solenoid valve responds and switches the oil circuit, connecting the high-pressure oil pump to the separation cylinder. Once the circuit is connected, the high-pressure oil pump begins to deliver high-pressure oil to the separation cylinder. The high-pressure oil drives the separation cylinder to generate a 15KN unlocking force within 180ms, which drives the mechanical unlocking device to detach the battery pack from the vehicle body.

[0089] In this embodiment, the control unit in the battery pack detachment control system analyzes and judges the vehicle status data collected by the sensing unit. If the battery pack detachment conditions are met, a detachment command is sent to the control switch, triggering the hydraulic circuit to open. The hydraulic power unit then drives the separation cylinder to produce mechanical action, ultimately achieving rapid and controllable detachment of the battery pack from the vehicle body through a mechanical unlocking device. During this process, by monitoring vehicle status data, the control unit can proactively and quickly execute the battery pack detachment operation when emergencies such as thermal runaway or severe collisions occur or are about to occur, thereby improving the vehicle's safety performance under extreme conditions.

[0090] exist Figure 4 Based on the illustrated embodiment, the following, in conjunction with Figure 5 The battery pack detachment control method for the aforementioned vehicles will be described in further detail.

[0091] Figure 5 This is a flowchart illustrating Embodiment Two of the battery pack detachment control method for vehicles provided in this application. Please refer to... Figure 5 The method may include:

[0092] S501. Acquire vehicle status data collected by the sensing unit.

[0093] For example, a brake-by-wire controller can acquire vehicle status data collected by a sensing unit, which includes vehicle driving data and / or battery status data.

[0094] S502. Determine at least one vehicle state threshold corresponding to the vehicle state data.

[0095] In this step, the control unit can determine at least one corresponding vehicle status threshold based on the type of vehicle status data acquired. This at least one vehicle status threshold is a critical criterion used by the control unit to determine whether the battery pack detachment condition is met.

[0096] Optionally, at least one vehicle state threshold may be pre-stored in the non-volatile memory of the control unit, or obtained in real time from a cloud server via the CAN bus.

[0097] Optionally, at least one vehicle status threshold can be pre-set based on a large number of safety specifications, experimental data and specific parameters of the vehicle model (such as battery pack weight and structural strength of mechanical unlocking device), and can be calibrated and adapted according to different vehicle model configurations.

[0098] For example, if the acquired vehicle status data is the current battery temperature, the control unit determines the corresponding threshold as the battery temperature threshold; if the vehicle status data is the current vehicle acceleration, the control unit determines the corresponding threshold as the acceleration threshold. For instance, the battery temperature threshold is 130°C, and the acceleration threshold is 15g.

[0099] S503. Based on at least one vehicle status threshold and vehicle status data, determine whether the battery pack detachment condition is met.

[0100] In this step, the control unit can compare at least one determined vehicle state threshold with the acquired vehicle state data to determine whether the battery pack detachment condition is met.

[0101] Optionally, the condition for battery pack detachment can be an expiration of a single data parameter or the result of a combination of multiple data parameters.

[0102] For example, if the control unit obtains the current battery temperature as 150°C and determines the battery temperature threshold as 130°C, then since the current battery temperature of 150°C is greater than the battery temperature threshold of 130°C, it is determined that the battery pack detachment condition is met.

[0103] S504. When the battery pack detachment conditions are met, a battery pack detachment command is sent to the control switch so that the hydraulic power unit delivers high-pressure oil to the separation cylinder, thereby causing the separation cylinder to drive the mechanical unlocking device to detach the battery pack from the vehicle body under the drive of the high-pressure oil.

[0104] In this embodiment, the control unit compares vehicle status data with preset, flexibly calibrated vehicle status thresholds to determine whether the battery pack detachment conditions are met. When the conditions are met, the control unit sends a battery pack detachment command to the control switch. The control switch then quickly switches the hydraulic circuit according to the command, and the hydraulic power unit drives the separation cylinder to perform mechanical action. Finally, the battery pack is quickly and controllably separated from the vehicle body through a mechanical unlocking device. This combination of intelligent decision-making based on configurable thresholds and rapid hydraulic execution ensures that the vehicle can actively and quickly separate the battery pack, a potential hazard, from the vehicle body under extreme dangerous conditions such as thermal runaway or severe collisions, providing safety for the occupants and the vehicle body.

[0105] Figure 6 This is a flowchart illustrating Embodiment 3 of the battery pack detachment control method for vehicles provided in this application. Please refer to... Figure 6 Based on the above-described method embodiment two, the vehicle status data includes vehicle driving data and / or battery status data, and at least one vehicle status threshold includes a vehicle driving threshold and / or a battery status threshold; the specific implementation of step S503 may include:

[0106] S601. If the vehicle driving data is greater than the vehicle driving threshold, and / or the battery status data is greater than the battery status threshold, then the battery pack detachment condition is determined to be met.

[0107] In this step, when the control unit determines that any parameter value in the vehicle driving data or battery status data is greater than its corresponding safety threshold, it can determine that the current operating condition constitutes a safety risk and meets the conditions for battery pack detachment.

[0108] In one specific implementation, the vehicle driving data is the current vehicle acceleration, the battery status data is the current battery temperature, the vehicle driving threshold is the acceleration threshold, and the battery status threshold is the battery temperature threshold; then the specific implementation of step S601 may include: if the current vehicle acceleration is greater than the acceleration threshold, and / or the current battery temperature is greater than the battery temperature threshold, then it is determined that the battery pack detachment condition is met.

[0109] For example, if the current battery temperature obtained by the control unit is 150°C, and the preset battery temperature threshold is 130°C, since the current battery temperature of 150°C is greater than the battery temperature threshold of 130°C, it can be determined that the battery pack detachment condition is met.

[0110] S602. If the vehicle driving data is less than or equal to the vehicle driving threshold and the battery status data is less than or equal to the battery status threshold, then the battery pack detachment condition is not met.

[0111] In this step, when the control unit determines that all parameter values ​​in the vehicle driving data and battery status data are less than or equal to their corresponding safety thresholds, it can be determined that the current vehicle is in a safe operating state and does not meet the conditions for battery pack detachment.

[0112] In one specific implementation, the vehicle driving data is the current vehicle acceleration, the battery status data is the current battery temperature, the vehicle driving threshold is the acceleration threshold, and the battery status threshold is the battery temperature threshold; then the specific implementation of step S602 may include: if the current vehicle acceleration is less than or equal to the acceleration threshold, and the current battery temperature is less than or equal to the battery temperature threshold, then it is determined that the battery pack detachment condition is not met.

[0113] For example, if the control unit obtains a current vehicle acceleration of 4g, while the preset acceleration threshold is 15g; and the current battery temperature is 95℃, corresponding to a battery temperature threshold of 130℃. Since the current vehicle acceleration of 4g is less than the acceleration threshold of 15g, and the current battery temperature of 95℃ is less than the battery temperature threshold of 130℃, all monitored parameters are within the safe range. Therefore, it can be determined that the conditions for battery pack detachment are not met.

[0114] In this embodiment, the battery pack detachment condition can be determined to be met if the vehicle driving data is greater than the vehicle driving threshold and / or the battery status data is greater than the battery status threshold; conversely, the battery pack detachment condition can be determined not to be met if the vehicle driving data is less than or equal to the vehicle driving threshold and the battery status data is less than or equal to the battery status threshold. The OR logic, triggered by any parameter exceeding its limit, ensures rapid response to sudden dangers such as collisions and thermal runaway. Simultaneously, the AND logic, which maintains a safe baseline state only when all parameters are normal, effectively prevents false system triggering while ensuring driving safety.

[0115] Furthermore, the battery pack detachment control method provided in this application combines calibrable threshold parameters with explicit judgment logic, enabling the control unit to accurately adapt to actual needs such as specific vehicle configuration and usage scenarios. This ensures necessary protection while avoiding over-protection, achieving precise and intelligent safety decision-making.

[0116] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Please refer to... Figure 7 The electronic device 20 may include at least one processor 21 and a memory 22. Optionally, the electronic device 20 may also include a communication component 23. The processor 21, the memory 22, and the communication component 23 are connected via a bus 24.

[0117] In the specific implementation process, at least one processor 21 executes computer execution instructions stored in memory 22, causing at least one processor 21 to perform the above-described method.

[0118] The specific implementation process of processor 21 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0119] The electronic device provided in this application embodiment can be a brake-by-wire controller, or other controllers in the vehicle with corresponding data processing and control capabilities to realize the functions of the above-mentioned control unit, such as a vehicle controller, a driving domain controller, etc. This application does not limit this.

[0120] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0121] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0122] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0123] This application also provides a vehicle, including a vehicle body; and Figure 2 The battery pack detachment control system of the vehicle shown, or, Figure 7 The electronic device shown is used to implement the battery pack detachment control method for the vehicle described in the above embodiment.

[0124] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0125] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0126] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0127] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0128] The division of units is merely a logical functional division; 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 indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0129] The units described 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.

[0130] In addition, the functional units in the various embodiments of the present invention 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.

[0131] If a function 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 invention, or the part that contributes to the prior art, or a 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 of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0132] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0133] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A battery pack fall-off control system of a vehicle, characterized by, The application relates to a battery pack falling control system of a vehicle, which comprises an induction unit, a control unit, a hydraulic power unit, a control switch, a separation oil cylinder and a mechanical unlocking device, the hydraulic power unit is connected with the separation oil cylinder through a hydraulic pipeline, the separation oil cylinder is mechanically connected with the mechanical unlocking device, the control switch is arranged on the hydraulic pipeline and located between the hydraulic power unit and the separation oil cylinder, the control unit is used for determining whether a battery pack falling condition is met according to vehicle state data collected by the induction unit, and sending a battery pack falling instruction to the control switch when the battery pack falling condition is met, the control switch is used for controlling the hydraulic power unit to deliver high-pressure oil to the separation oil cylinder according to the battery pack falling instruction, and the separation oil cylinder is used for driving the mechanical unlocking device to drive the battery pack to fall from the vehicle body under the drive of the high-pressure oil. The vehicle state data comprises vehicle driving data and / or battery state data, and the induction unit comprises a sensor module, a thermal runaway detection module and a data transmission module. The sensor module is used for collecting the vehicle driving data. The thermal runaway detection module is used for obtaining the battery state data. The data transmission module is used for transmitting the vehicle driving data and / or battery state data to the control unit.

2. The system of claim 1, wherein, The application relates to a control unit applied to the battery pack falling control system of the vehicle. The method comprises the following steps: obtaining vehicle state data collected by an induction unit; determining whether a battery pack falling condition is met according to the vehicle state data; when the battery pack falling condition is met, sending a battery pack falling instruction to a control switch, so that a hydraulic power unit delivers high-pressure oil to a separation oil cylinder, and then the separation oil cylinder drives a mechanical unlocking device to drive a battery pack to fall from a vehicle body under the drive of the high-pressure oil.

3. A battery pack falling-off control method of a vehicle, characterized by, The step of determining whether the battery pack falling condition is met according to the vehicle state data comprises the following steps: determining at least one vehicle state threshold value corresponding to the vehicle state data; determining whether the battery pack falling condition is met according to the at least one vehicle state threshold value and the vehicle state data. The vehicle state data comprises vehicle driving data and / or battery state data, and the at least one vehicle state threshold value comprises a vehicle driving threshold value and / or a battery state threshold value.

4. The method of claim 3, wherein, The step of determining whether the battery pack falling condition is met according to the at least one vehicle state threshold value and the vehicle state data comprises the following steps: if the vehicle driving data is greater than the vehicle driving threshold value and / or the battery state data is greater than the battery state threshold value, it is determined that the battery pack falling condition is met; if the vehicle driving data is less than or equal to the vehicle driving threshold value and the battery state data is less than or equal to the battery state threshold value, it is determined that the battery pack falling condition is not met.

5. The method of claim 4, wherein, The vehicle driving data is current vehicle acceleration, the battery state data is current battery temperature, the vehicle driving threshold value is an acceleration threshold value, and the battery state threshold value is a battery temperature threshold value. The step of determining whether the battery pack falling condition is met according to the at least one vehicle state threshold value and the vehicle state data comprises the following steps: ​ ​ 6. The method of claim 5, wherein, ​ ​ if the current vehicle acceleration is greater than the acceleration threshold, and / or the current battery temperature is greater than the battery temperature threshold, then determine that the battery pack shedding condition is met; if the current vehicle acceleration is less than or equal to the acceleration threshold, and the current battery temperature is less than or equal to the battery temperature threshold, then determine that the battery pack shedding condition is not met.

7. The method of claim 5, wherein, The control unit is a brake-by-wire controller.

8. An electronic device, comprising: comprising: a memory, a processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, so that the processor executes the method of any one of claims 3-7.

9. A vehicle characterized by comprising: comprising: a vehicle body; and the battery pack shedding control system of the vehicle of claim 1 or 2, or the electronic device of claim 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions for implementing the method of any one of claims 3-7 when the computer-executable instructions are executed by the processor.

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