Safety protection method, equipment and device for thermal runaway of vehicle battery and storage medium

Abstract

A safety protection method, apparatus and device for thermal runaway of a vehicle battery and a computer readable storage medium, the method comprising: if it is determined that a thermal runaway event exists in a vehicle at present, acquiring the speed, state, inside / outside personnel information and / or current rainfall value of the vehicle; according to the vehicle speed, the state, the inside / outside personnel information and / or the current rainfall value of the vehicle, a control strategy is determined for safety protection, the safety strategy comprises vehicle door and / or vehicle window control, and the technical problem of safety caused by automatic vehicle door unlocking and / or vehicle window opening when the vehicle thermal runaway monitoring system is triggered or misjudged by mistake is solved. The method achieves the synchronous integration of the vehicle speed, the vehicle state, the personnel inside and outside and the rainfall information, carries out the decision-making of an escape channel, and avoids the potential safety hazards under false triggering.

Description

Technical Field

[0001] This application relates to the field of vehicle safety protection technology, specifically to a safety protection method, device, equipment, and computer-readable storage medium for thermal runaway of vehicle batteries. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the safety of power batteries has become a core concern for the industry. In a state of thermal runaway, power batteries can release high-temperature, high-pressure harmful gases due to violent internal chemical reactions, including highly toxic components such as carbon monoxide and hydrogen fluoride. These gases can easily enter the passenger compartment through damage to the battery pack casing. On the one hand, toxic gases can cause occupants to become poisoned and unconscious within a short period, losing their ability to escape; on the other hand, the accumulation of high-pressure gases in the confined passenger compartment may trigger an explosion, posing a fatal threat to the lives of the occupants. To address this risk, the industry commonly employs solutions such as deploying temperature, pressure, and gas sensors inside the battery pack, or installing hazardous gas monitoring modules in the passenger compartment. When the monitoring system detects thermal runaway characteristic signals (such as a sudden temperature rise, excessive pressure, or excessive concentration of specific gases), it automatically triggers a safety response mechanism, releasing pressure by unlocking the doors and opening the windows, thus creating an escape route for the occupants. This technology has become an important component of the safety protection system for new energy vehicles. However, existing monitoring systems are prone to false triggering or misjudgment. Complex driving environments, such as abnormal localized battery pack temperatures due to high temperatures, sensor signal deviations caused by vibration interference, and the accidental triggering of the passenger compartment monitoring module by external irritating gases, can all cause the system to erroneously activate the door unlocking and window opening functions in safe, non-thermal runaway scenarios. This issue poses multiple safety hazards: accidentally opening windows while driving may lead to foreign object intrusion affecting driving operations; accidentally locking doors while parked may result in theft of valuables from inside the vehicle; and in extreme cases, accidental window opening could even expose occupants to secondary safety risks in inclement weather. Therefore, there is an urgent need to develop optimized technologies that can accurately identify thermal runaway scenarios and prevent false triggering. Summary of the Invention

[0003] This application provides a safety protection method, device, equipment, and computer-readable storage medium for vehicle battery thermal runaway, which can solve the safety problems caused by automatic door unlocking and / or window opening when the vehicle thermal runaway monitoring system is falsely triggered or misjudged in the prior art.

[0004] In a first aspect, embodiments of this application provide a safety protection method for thermal runaway of a vehicle battery, including: If it is determined that the vehicle is currently experiencing the thermal runaway event, then the vehicle speed, status, information on people inside and outside the vehicle and / or the current rainfall value are obtained. Based on the vehicle's speed, status, information on people inside and outside the vehicle, and / or the current rainfall value, a control strategy is determined for safety protection, wherein the safety strategy includes controlling the vehicle doors and / or windows.

[0005] In conjunction with the first aspect, in one implementation, determining a control strategy for safety protection based on the vehicle's speed, status, information on occupants / exterior personnel, and / or current rainfall value includes: Based on the vehicle's speed and status, a first control strategy is determined; A second control strategy is determined based on the vehicle's speed, status, and the information of the people inside and outside the vehicle; A third control strategy is determined based on the vehicle's speed, status, and rainfall value.

[0006] In conjunction with the first aspect, in one implementation, determining the first control strategy based on the vehicle's speed and state includes: If it is determined that the vehicle speed is greater than or equal to the first preset vehicle speed, and the state is the first preset state, then control the window to drop by 10%. If it is determined that the vehicle speed is less than the first preset vehicle speed and the state is the first preset state, then control the windows to be fully lowered and all doors to be unlocked. If the state is determined to be the second preset state and the vehicle speed is the second preset vehicle speed, then control the window to drop by 10%.

[0007] In conjunction with the first aspect, in one implementation, determining the second control strategy based on the vehicle's speed, status, and the information of the inside / outside occupants includes: If it is determined that the vehicle speed is greater than or equal to the first preset vehicle speed, the state is the first preset state, and there are people inside / outside the vehicle, then control the window to drop by 10%; If it is determined that the vehicle speed is less than the first preset vehicle speed, the state is the first preset state, and there are people inside / outside the vehicle, then control the windows to be fully lowered and all doors to be unlocked. If the vehicle speed data is determined to be the second preset vehicle speed, the status data to be the second preset status, and there are no people inside or outside the vehicle, then control the window to drop by 10%.

[0008] In conjunction with the first aspect, in one implementation, determining the third control strategy based on the vehicle's speed, state, and rainfall value includes: If it is determined that the vehicle speed is greater than or equal to the first preset vehicle speed, the state is the first preset state, and the rainfall value is less than the first preset rainfall value, then control the vehicle window to drop by 10%. If it is determined that the vehicle speed is greater than or equal to the first preset vehicle speed, the state is the first preset state, and the rainfall value is greater than or equal to the second preset rainfall value, then control the window to drop by 15%. If it is determined that the vehicle speed is less than the first preset vehicle speed, the status data is the first preset status, and the rainfall value is less than or equal to the third preset rainfall value, control the windows to be fully lowered. If the vehicle speed is determined to be the second preset speed, the state is the second preset state, and the rainfall value is less than or equal to the fourth preset rainfall value, then control the window to drop by 10%. If the vehicle speed is determined to be the second preset speed, the state is the second preset state, and the rainfall value is greater than or equal to the second preset rainfall value, then the window is controlled to drop by 10%.

[0009] In conjunction with the first aspect, in one implementation, after determining that the thermal runaway event has occurred in the current vehicle, the method further includes: An alarm signal is generated and sent to the vehicle controller, so that the vehicle controller activates the warning device based on the alarm signal and sends warning information, wherein the warning information includes sound warning, video warning, signal warning and / or text warning.

[0010] In conjunction with the first aspect, in one implementation, determining that the thermal runaway event exists in the current vehicle includes: Obtain the current gas concentration, gas change rate, and battery temperature rise rate inside the vehicle; Based on the gas concentration inside the vehicle, the rate of change of the gas inside the vehicle, and the rate of temperature rise of the battery, it is determined whether the vehicle is experiencing a thermal runaway event; If the gas concentration inside the vehicle is greater than the preset gas concentration, the gas change rate inside the vehicle is greater than the preset gas change rate, and the battery temperature rise rate is greater than the preset temperature rise rate, then it is determined that a thermal runaway event has occurred in the current vehicle.

[0011] Secondly, embodiments of this application provide a safety protection device for thermal runaway of a vehicle battery, the safety protection device for thermal runaway of a vehicle battery comprising: The determination and acquisition module is used to acquire the vehicle's speed, status, information on people inside and outside the vehicle, and / or the current rainfall value if it is determined that the vehicle is currently experiencing the thermal runaway event. The control module is used to determine a control strategy for safety protection based on the vehicle's speed, status, information on people inside and outside the vehicle, and / or the current rainfall value. The safety strategy includes controlling the vehicle doors and / or windows.

[0012] Thirdly, embodiments of this application provide a safety protection device for thermal runaway of a vehicle battery. The safety protection device for thermal runaway of a vehicle battery includes a processor, a memory, and a safety protection program for thermal runaway of a vehicle battery stored in the memory and executable by the processor. When the safety protection program for thermal runaway of a vehicle battery is executed by the processor, it implements the steps of the safety protection method for thermal runaway of a vehicle battery as described above.

[0013] Fourthly, embodiments of this application provide a computer-readable storage medium storing a safety protection program for thermal runaway of a vehicle battery, wherein when the safety protection program for thermal runaway of a vehicle battery is executed by a processor, it implements the steps of the safety protection method for thermal runaway of a vehicle battery as described above.

[0014] The beneficial effects of the technical solutions provided in this application include: If a thermal runaway event is determined to occur in the vehicle, the vehicle's speed, status, information on occupants (both inside and outside), and / or the current rainfall value are acquired. Based on these information, a control strategy is determined for safety protection. This safety strategy includes controlling the vehicle doors and / or windows to address the safety issues caused by automatic door unlocking and / or window opening when the vehicle thermal runaway monitoring system is falsely triggered or misjudged. This approach integrates vehicle speed, vehicle status, information on occupants (both inside and outside), and rainfall information to make escape route decisions and avoid safety hazards caused by false triggering. Attached Figure Description

[0015] Figure 1 This is a flowchart illustrating the first embodiment of the safety protection method for thermal runaway of vehicle batteries in this application. Figure 2 This is a schematic diagram of the functional modules of an embodiment of the vehicle battery thermal runaway safety protection device of this application; Figure 3 This is a schematic diagram of the hardware structure of the safety protection device for thermal runaway of vehicle battery involved in the embodiments of this application. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0017] First, some of the technical terms used in this application will be explained to help those skilled in the art understand this application.

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0019] In a first aspect, embodiments of this application provide a safety protection method for thermal runaway of a vehicle battery.

[0020] In one embodiment, reference is made to Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the safety protection method for thermal runaway of vehicle batteries according to this application. Figure 1 As shown, the safety protection methods for vehicle battery thermal runaway include: Step S10: If it is determined that the vehicle is currently experiencing the thermal runaway event, then obtain the vehicle speed, status, information on people inside / outside the vehicle and / or the current rainfall value; As an example, it acquires the current gas concentration, gas change rate, and battery temperature rise rate inside the vehicle; The presence of a thermal runaway event is determined based on the in-vehicle gas concentration, the rate of gas change in the vehicle, and the battery temperature rise rate. A thermal runaway event is confirmed if the in-vehicle gas concentration, the rate of gas change in the vehicle, and the battery temperature rise rate all exceed preset limits. For example, the vehicle safety controller obtains gas concentration and the rate of gas change from gas sensors and the battery temperature rise rate from the battery management system. The in-vehicle gas concentration includes carbon monoxide and hydrogen. If the carbon monoxide concentration exceeds a preset gas concentration of 200 ppm, the hydrogen concentration exceeds 4% LEL, the in-vehicle gas change rate exceeds a preset gas change rate of 15°C / 5s, and the battery temperature rise rate exceeds a preset temperature rise rate of 1°C / s, a thermal runaway event is confirmed.

[0021] If a thermal runaway event is determined to occur in the vehicle, the system acquires the vehicle's speed, status, information on occupants (both inside and outside), and / or the current rainfall value. For example, the vehicle safety controller acquires the vehicle speed from the vehicle stability system (real-time speed); the vehicle safety controller acquires the vehicle's status from the vehicle entry system (including power-on or ignition status); the vehicle safety controller acquires information on occupants (both inside and outside) from the camera system (including occupant location and status information); and the vehicle safety controller acquires the current rainfall value from a rain sensor or weather information source.

[0022] Step S20: Determine a control strategy for safety protection based on the vehicle's speed, status, information on people inside / outside the vehicle, and / or the current rainfall value, wherein the safety strategy includes controlling the vehicle doors and / or windows.

[0023] As an example, if the vehicle speed is greater than or equal to 5 km / h, the windows will be lowered by 10% to release pressure, avoiding the risk of high-speed falls; or, if the vehicle is stationary, the windows will be fully lowered and the doors unlocked; or, if the vehicle is in a key-off state, the windows will be lowered by 10% to release pressure (for theft prevention / water ingress prevention); or, if the camera detects that an occupant is unconscious, the nearest door will be unlocked and the nearest window opened first, shortening the escape route; or, if the camera detects that a pedestrian is less than 3 meters away from the vehicle, an alarm will be triggered and the windows will be raised to reduce the risk of secondary injuries.

[0024] Specifically, determining the control strategy based on the vehicle's speed, status, information on people inside / outside the vehicle, and / or the current rainfall value includes: determining a first control strategy based on the vehicle's speed and status; determining a second control strategy based on the vehicle's speed, status, and information on people inside / outside the vehicle; and determining a third control strategy based on the vehicle's speed, status, and the rainfall value.

[0025] For example, if the vehicle speed is determined to be greater than or equal to a first preset speed, and the state is the first preset state, then the window is controlled to lower by 10%; if the vehicle speed is determined to be less than the first preset speed, and the state is the first preset state, then the window is controlled to fully lower and all doors are unlocked; if the state is determined to be the second preset state, and the vehicle speed is the second preset speed, then the window is controlled to lower by 10%. For instance, if the vehicle speed is determined to be greater than or equal to the first preset speed of 5 km / h, and the state is the first preset state Key On, then the window is controlled to lower by 10%; if the vehicle speed is determined to be less than the first preset speed of 5 km / h, and the state is the first preset state Key On, then the window is controlled to fully lower and all doors are unlocked; if the state is determined to be the second preset state Key Off, and the vehicle speed is the second preset speed of 0, then the window is controlled to lower by 10%.

[0026] If the vehicle speed is determined to be greater than or equal to the first preset speed, the status is the first preset state, and there are occupants inside / outside the vehicle, then the windows will be lowered by 10%. If the vehicle speed is determined to be less than the first preset speed, the status is the first preset state, and there are occupants inside / outside the vehicle, then the windows will be fully lowered and all doors will be unlocked. If the vehicle speed is determined to be the second preset speed, the status is the second preset state, and there are no occupants inside / outside the vehicle, then the windows will be lowered by 10%. For example, if the vehicle speed is determined to be greater than or equal to the first preset speed of 5 km / h, the status is the first preset state Key On, and there are occupants inside / outside the vehicle, then the windows will be lowered by 10%. If the vehicle speed is determined to be less than the first preset speed of 5 km / h, the status is the first preset state Key On, and there are occupants inside / outside the vehicle, then the windows will be fully lowered and all doors will be unlocked. If the vehicle speed is determined to be the second preset speed of 0, the status is the second preset state Key Off, and there are no occupants inside / outside the vehicle, then the windows will be lowered by 10%. If the door module or BCM loses the vehicle speed signal after receiving the thermal safety signal, the window will first drop by 10%. If the vehicle speed signal communication is not restored after more than 30 seconds, it will be judged as a timeout. The window will then be lowered to the maximum and the door lock will be unlocked.

[0027] If the vehicle speed is greater than or equal to the first preset speed, the state is the first preset state, and the rainfall value is less than the first preset rainfall value, then control the window to drop by 10%; if the vehicle speed is greater than or equal to the first preset speed, the state is the first preset state, and the rainfall value is greater than or equal to the second preset rainfall value, then control the window to drop by 15%; if the vehicle speed is less than the first preset speed, the state is the first preset state, and the rainfall value is less than or equal to the third preset rainfall value, then control the window to drop fully; if the vehicle speed is the second preset speed, the state is the second preset state, and the rainfall value is less than or equal to the fourth preset rainfall value, then control the window to drop by 10%; if the vehicle speed is the second preset speed, the state is the second preset state, and the rainfall value is greater than or equal to the second preset rainfall value, then control the window to drop by 10%. For example, if the vehicle speed is determined to be greater than or equal to the first preset speed of 5 km / h, the status is the first preset state Key On, and the rainfall value is less than the first preset rainfall value (moderate rain), then the window is controlled to drop by 10%; if the vehicle speed is determined to be greater than or equal to the first preset speed of 5 km / h, the status is the first preset state Key On, and the rainfall value is greater than or equal to the second preset rainfall value (heavy rain), then the window is controlled to drop by 15%; if the vehicle speed is determined to be less than the first preset speed of 5 km / h, the status is the first preset state Key On, and the rainfall value is less than or equal to the third preset rainfall value (no rain), then the window is controlled to drop fully; if the vehicle speed is determined to be the second preset speed of 0, the status is the second preset state Key Off, and the rainfall value is less than or equal to the third preset rainfall value (light rain), then the window is controlled to drop by 10%; if the vehicle speed is determined to be the second preset speed of 0, the status is the second preset state Key Off, and the rainfall value is greater than or equal to the second preset rainfall value (heavy rain), then the window is controlled to drop by 10%. The third preset rainfall value is less than the fourth preset rainfall value, the fourth preset rainfall value is less than the first preset rainfall value, and the first preset rainfall value is less than the second preset rainfall value.

[0028] After determining that the current vehicle has the thermal runaway event, the method further includes: generating an alarm signal and sending the alarm signal to the vehicle controller, so that the vehicle controller activates the warning device based on the alarm signal and sends warning information, wherein the warning information includes sound warning, video warning, signal warning and / or text warning.

[0029] In this embodiment, if it is determined that the vehicle is currently experiencing a thermal runaway event, the vehicle's speed, status, information on people inside and outside the vehicle, and / or the current rainfall value are obtained. Based on the vehicle's speed, status, information on people inside and outside the vehicle, and / or the current rainfall value, a control strategy is determined for safety protection. The safety strategy includes controlling the vehicle doors and / or windows to address the safety issues caused by automatic door unlocking and / or window opening when the vehicle thermal runaway monitoring system is falsely triggered or misjudged. This achieves simultaneous integration of vehicle speed, vehicle status, information on people inside and outside the vehicle, and rainfall information for escape route decision-making, avoiding safety hazards caused by false triggering.

[0030] Secondly, embodiments of this application also provide a safety protection device for thermal runaway of a vehicle battery.

[0031] In one embodiment, reference is made to Figure 2 , Figure 2 This is a functional module diagram of an embodiment of the vehicle battery thermal runaway safety protection device of this application. Figure 2 As shown, the safety protection device for vehicle battery thermal runaway includes: The determination and acquisition module 10 is used to acquire the vehicle speed, status, information of people inside / outside the vehicle and / or the current rainfall value if it is determined that the vehicle is currently experiencing the thermal runaway event. The control module 20 is used to determine a control strategy for safety protection based on the vehicle's speed, status, information on people inside and outside the vehicle, and / or the current rainfall value. The safety strategy includes controlling the vehicle doors and / or windows.

[0032] Furthermore, in one embodiment, the control module 20 is used to: Based on the vehicle's speed and status, a first control strategy is determined; A second control strategy is determined based on the vehicle's speed, status, and the information of the people inside and outside the vehicle; A third control strategy is determined based on the vehicle's speed, status, and rainfall value.

[0033] Furthermore, in one embodiment, the safety protection device for vehicle battery thermal runaway also includes a new module for: If it is determined that the vehicle speed is greater than or equal to the first preset vehicle speed, and the state is the first preset state, then control the window to drop by 10%. If it is determined that the vehicle speed is less than the first preset vehicle speed and the state is the first preset state, then control the windows to be fully lowered and all doors to be unlocked. If the state is determined to be the second preset state and the vehicle speed is the second preset vehicle speed, then control the window to drop by 10%.

[0034] Furthermore, in one embodiment, the safety protection device for vehicle battery thermal runaway also includes a new module for: If it is determined that the vehicle speed is greater than or equal to the first preset vehicle speed, the state is the first preset state, and there are people inside / outside the vehicle, then control the window to drop by 10%; If it is determined that the vehicle speed is less than the first preset vehicle speed, the state is the first preset state, and there are people inside / outside the vehicle, then control the windows to be fully lowered and all doors to be unlocked. If the vehicle speed data is determined to be the second preset vehicle speed, the status data to be the second preset status, and there are no people inside or outside the vehicle, then control the window to drop by 10%.

[0035] Furthermore, in one embodiment, the safety protection device for vehicle battery thermal runaway also includes a new module for: If it is determined that the vehicle speed is greater than or equal to the first preset vehicle speed, the state is the first preset state, and the rainfall value is less than the first preset rainfall value, then control the vehicle window to drop by 10%. If it is determined that the vehicle speed is greater than or equal to the first preset vehicle speed, the state is the first preset state, and the rainfall value is greater than or equal to the second preset rainfall value, then control the window to drop by 15%. If it is determined that the vehicle speed is less than the first preset vehicle speed, the status data is the first preset status, and the rainfall value is less than or equal to the third preset rainfall value, control the windows to be fully lowered. If the vehicle speed is determined to be the second preset speed, the state is the second preset state, and the rainfall value is less than or equal to the fourth preset rainfall value, then control the window to drop by 10%. If the vehicle speed is determined to be the second preset speed, the state is the second preset state, and the rainfall value is greater than or equal to the second preset rainfall value, then the window is controlled to drop by 10%.

[0036] Furthermore, in one embodiment, the safety protection device for vehicle battery thermal runaway also includes a new module for: An alarm signal is generated and sent to the vehicle controller, so that the vehicle controller activates the warning device based on the alarm signal and sends warning information, wherein the warning information includes sound warning, video warning, signal warning and / or text warning.

[0037] Furthermore, in one embodiment, the determining and obtaining module 10 is used for: Obtain the current gas concentration, gas change rate, and battery temperature rise rate inside the vehicle; Based on the gas concentration inside the vehicle, the rate of change of the gas inside the vehicle, and the rate of temperature rise of the battery, it is determined whether the vehicle is experiencing a thermal runaway event; If the gas concentration inside the vehicle is greater than the preset gas concentration, the gas change rate inside the vehicle is greater than the preset gas change rate, and the battery temperature rise rate is greater than the preset temperature rise rate, then it is determined that a thermal runaway event has occurred in the current vehicle.

[0038] The functions of each module in the above-mentioned vehicle battery thermal runaway safety protection device correspond to the steps in the above-mentioned vehicle battery thermal runaway safety protection method embodiment, and their functions and implementation processes will not be described in detail here.

[0039] Thirdly, embodiments of this application provide a safety protection device for thermal runaway of a vehicle battery. The safety protection device for thermal runaway of a vehicle battery can be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0040] Reference Figure 3 , Figure 3 This is a schematic diagram of the hardware structure of a vehicle battery thermal runaway safety protection device involved in an embodiment of this application. In this embodiment, the vehicle battery thermal runaway safety protection device may include a processor, a memory, a communication interface, and a communication bus.

[0041] The communication bus can be of any type and is used to interconnect the processor, memory, and communication interface.

[0042] Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces used for interconnecting internal components of the vehicle battery thermal runaway safety protection equipment, as well as interfaces used for interconnecting the vehicle battery thermal runaway safety protection equipment with other devices (such as other computing devices or user equipment). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user equipment can be displays, keyboards, etc.

[0043] Memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0044] The processor can be a general-purpose processor, which can call the vehicle battery thermal runaway safety protection program stored in the memory and execute the vehicle battery thermal runaway safety protection method provided in the embodiments of this application. For example, the general-purpose processor can be a central processing unit (CPU). The method executed when the vehicle battery thermal runaway safety protection program is called can refer to the various embodiments of the vehicle battery thermal runaway safety protection method of this application, and will not be repeated here.

[0045] Those skilled in the art will understand that Figure 3 The hardware structure shown does not constitute a limitation of this application and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0046] Fourthly, embodiments of this application also provide a computer-readable storage medium.

[0047] The present application provides a computer-readable storage medium storing a safety protection program for thermal runaway of a vehicle battery, wherein when the vehicle battery thermal runaway safety protection program is executed by a processor, it implements the steps of the vehicle battery thermal runaway safety protection method described above.

[0048] The method implemented when the safety protection procedure for thermal runaway of the vehicle battery is executed can be referred to in various embodiments of the safety protection method for thermal runaway of the vehicle battery in this application, and will not be repeated here.

[0049] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0050] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0051] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0052] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0053] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0054] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0055] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A safety protection method for thermal runaway of a vehicle battery, characterized in that, include: If it is determined that the vehicle is currently experiencing the thermal runaway event, then the vehicle speed, status, information on people inside and outside the vehicle and / or the current rainfall value are obtained. Based on the vehicle's speed, status, information on people inside and outside the vehicle, and / or the current rainfall value, a control strategy is determined for safety protection, wherein the safety strategy includes controlling the vehicle doors and / or windows.

2. The safety protection method for thermal runaway of vehicle batteries as described in claim 1, characterized in that, The step of determining a control strategy based on the vehicle's speed, status, information on people inside and outside the vehicle, and / or the current rainfall value includes: Based on the vehicle's speed and status, a first control strategy is determined; A second control strategy is determined based on the vehicle's speed, status, and the information of the people inside and outside the vehicle; A third control strategy is determined based on the vehicle's speed, status, and rainfall value.

3. The safety protection method for thermal runaway of vehicle batteries as described in claim 2, characterized in that, Determining the first control strategy based on the vehicle's speed and status includes: If it is determined that the vehicle speed is greater than or equal to the first preset vehicle speed, and the state is the first preset state, then control the window to drop by 10%. If it is determined that the vehicle speed is less than the first preset vehicle speed and the state is the first preset state, then control the windows to be fully lowered and all doors to be unlocked. If the state is determined to be the second preset state and the vehicle speed is the second preset vehicle speed, then control the window to drop by 10%.

4. The safety protection method for thermal runaway of vehicle batteries as described in claim 2, characterized in that, The step of determining the second control strategy based on the vehicle's speed, status, and the information of the people inside and outside the vehicle includes: If it is determined that the vehicle speed is greater than or equal to the first preset vehicle speed, the state is the first preset state, and there are people inside / outside the vehicle, then control the window to drop by 10%; If it is determined that the vehicle speed is less than the first preset vehicle speed, the state is the first preset state, and there are people inside / outside the vehicle, then control the windows to be fully lowered and all doors to be unlocked. If the vehicle speed data is determined to be the second preset vehicle speed, the status data to be the second preset status, and there are no people inside or outside the vehicle, then control the window to drop by 10%.

5. The safety protection method for thermal runaway of vehicle batteries as described in claim 2, characterized in that, The step of determining a third control strategy based on the vehicle's speed, status, and rainfall value includes: If it is determined that the vehicle speed is greater than or equal to the first preset vehicle speed, the state is the first preset state, and the rainfall value is less than the first preset rainfall value, then control the vehicle window to drop by 10%. If it is determined that the vehicle speed is greater than or equal to the first preset vehicle speed, the state is the first preset state, and the rainfall value is greater than or equal to the second preset rainfall value, then control the window to drop by 15%. If it is determined that the vehicle speed is less than the first preset vehicle speed, the status data is the first preset status, and the rainfall value is less than or equal to the third preset rainfall value, control the windows to be fully lowered. If the vehicle speed is determined to be the second preset speed, the state is the second preset state, and the rainfall value is less than or equal to the fourth preset rainfall value, then the vehicle window is controlled to drop by 10%. If the vehicle speed is determined to be the second preset speed, the state is the second preset state, and the rainfall value is greater than or equal to the second preset rainfall value, then the window is controlled to drop by 10%, wherein the third preset rainfall value is less than the fourth preset rainfall value, the fourth preset rainfall value is less than the first preset rainfall value, and the first preset rainfall value is less than the second preset rainfall value.

6. The safety protection method for thermal runaway of vehicle batteries as described in claim 1, characterized in that, After determining that the current vehicle is experiencing the thermal runaway event, the process further includes: An alarm signal is generated and sent to the vehicle controller, so that the vehicle controller activates the warning device based on the alarm signal and sends warning information, wherein the warning information includes sound warning, video warning, signal warning and / or text warning.

7. The safety protection method for thermal runaway of vehicle batteries as described in claim 1, characterized in that, The determination that the current vehicle has experienced the thermal runaway event includes: Obtain the current gas concentration, gas change rate, and battery temperature rise rate inside the vehicle; Based on the gas concentration inside the vehicle, the rate of change of the gas inside the vehicle, and the rate of temperature rise of the battery, it is determined whether the vehicle is experiencing a thermal runaway event; If the gas concentration inside the vehicle is greater than the preset gas concentration, the gas change rate inside the vehicle is greater than the preset gas change rate, and the battery temperature rise rate is greater than the preset temperature rise rate, then it is determined that a thermal runaway event has occurred in the current vehicle.

8. A safety protection device for thermal runaway of a vehicle battery, characterized in that, The vehicle battery thermal runaway safety protection device includes: The determination and acquisition module is used to acquire the vehicle's speed, status, information on people inside and outside the vehicle, and / or the current rainfall value if it is determined that the vehicle is currently experiencing the thermal runaway event. The control module is used to determine a control strategy for safety protection based on the vehicle's speed, status, information on people inside and outside the vehicle, and / or the current rainfall value. The safety strategy includes controlling the vehicle doors and / or windows.

9. A safety protection device for thermal runaway of a vehicle battery, characterized in that, The vehicle battery thermal runaway safety protection device includes a processor, a memory, and a vehicle battery thermal runaway safety protection program stored in the memory and executable by the processor, wherein when the vehicle battery thermal runaway safety protection program is executed by the processor, it implements the steps of the vehicle battery thermal runaway safety protection method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a safety protection program for thermal runaway of a vehicle battery, wherein when the safety protection program for thermal runaway of a vehicle battery is executed by a processor, it implements the steps of the safety protection method for thermal runaway of a vehicle battery as described in any one of claims 1 to 7.

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