System and method for detecting thermal runaway of a vehicle

Abstract

This invention provides a thermal runaway detection system and method for vehicles. The thermal runaway detection system includes: a power supply; a detection unit configured to detect thermal runaway of the vehicle's battery pack; and a wake-up device disposed within the battery pack and connected between the power supply and the detection unit. The wake-up device includes a housing containing a flowable conductive medium and having at least two conductive parts. The at least two conductive parts are configured to form a conductive path when the conductive medium flows between them. The wake-up device is configured to: when the temperature of the battery pack reaches a preset temperature threshold, cause the conductive medium to flow between the at least two conductive parts, thereby electrically connecting the detection unit and the power supply. This invention utilizes the temperature change of the battery pack to cause the conductive medium in the wake-up device to expand and flow at high temperatures, connecting the detection unit and the power supply through the conductive parts. This physical mechanism wakes up the detection unit, eliminating the need for continuous power supply to the wake-up device and / or the detection unit when the vehicle is in sleep mode, thus reducing the vehicle's standby power consumption.

Description

Technical Field

[0001] This invention relates to the field of vehicles, and more particularly to the field of vehicle battery systems. More specifically, this invention relates to a thermal runaway detection system for a vehicle, a thermal runaway detection method, a computer device for implementing the thermal runaway detection method, a computer-readable storage medium for executing the thermal runaway detection method, and a computer program product for implementing the thermal runaway detection method. Background Technology

[0002] With the continuous development of new energy technologies, electric vehicles are increasingly appearing in people's lives. Electric vehicles use battery packs as their power source. When the battery pack temperature becomes too high and exceeds its normal operating temperature range, and cannot be effectively controlled, it can lead to thermal runaway, and even fire. Under normal vehicle operation, the vehicle controller can usually monitor the battery pack status in real time and take necessary safety measures. However, when the vehicle is in sleep mode, all controllers are usually powered off to reduce the vehicle's standby power consumption. In this state, even if thermal runaway occurs in the battery pack, it may not be detected in time because the controller is powered off, resulting in a failure to take timely measures to prevent a fire.

[0003] Currently, sensors are placed inside the battery pack to wake up the vehicle controller when the vehicle is in a dormant state to perform thermal runaway detection and protection. However, this method requires the sensors to be kept powered on continuously to detect changes in the battery pack's state, which increases the vehicle's standby power consumption.

[0004] Therefore, a more energy-efficient thermal runaway detection method is needed to enable timely detection of thermal runaway risks even when the vehicle is in a dormant state. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art and provide a thermal runaway detection system and corresponding thermal runaway detection method for vehicles, so as to realize timely detection of thermal runaway in the vehicle's dormant state in a cost-effective and reliable manner.

[0006] Therefore, according to one aspect of the present invention, a thermal runaway detection system for a vehicle is provided, the thermal runaway detection system comprising: a power supply; a detection unit configured to detect thermal runaway of the vehicle's battery pack; and a wake-up device disposed within the battery pack and connected between the power supply and the detection unit, the wake-up device comprising a housing containing a flowable conductive medium and having at least two conductive portions, the at least two conductive portions being configured to form a conductive path when the conductive medium flows between the at least two conductive portions, wherein the wake-up device is configured to: when the temperature of the battery pack reaches a preset temperature threshold, cause the conductive medium to flow between the at least two conductive portions, thereby electrically connecting the detection unit to the power supply.

[0007] Based on the above-described technical concept, the present invention may further include any one or more of the following optional forms.

[0008] In some alternative configurations, the power supply and the detection unit are respectively connected to two of the at least two conductive parts.

[0009] In some alternative forms, the housing is constructed as a tubular structure and has channels suitable for the flow of the conductive medium. The housing includes sidewalls that are substantially parallel to the extension direction of the channels, and the at least two conductive portions are disposed on the sidewalls.

[0010] In some alternative forms, the housing is designed to be closable to prevent the conductive medium from leaking out.

[0011] In some alternative forms, the conductive medium includes mercury.

[0012] In some alternative configurations, the detection unit is configured as a detection unit of the battery management system of the battery pack.

[0013] In some alternative configurations, the preset temperature threshold is between the operating temperature of the battery pack and the thermal runaway temperature.

[0014] In some alternative forms, the thermal runaway detection system includes a protection unit configured to perform a protective action in response to thermal runaway of the vehicle's battery pack.

[0015] In some alternative configurations, the protection unit is configured as a protection unit for the vehicle's overall controller and / or a protection unit for the battery management system of the battery pack.

[0016] According to another aspect of the present invention, a method for detecting thermal runaway in a vehicle is provided. The method detects thermal runaway in the vehicle's battery pack using the aforementioned vehicle thermal runaway detection system. The method includes: when the temperature of the battery pack reaches a preset temperature threshold, causing a conductive medium in a wake-up device to flow between at least two conductive parts to electrically connect a detection unit to a power source; and detecting thermal runaway in the vehicle's battery pack using the detection unit.

[0017] In some alternative embodiments, detecting thermal runaway of the vehicle's battery pack by the detection unit includes: detecting whether the temperature of the battery pack exceeds a preset temperature and / or whether the air pressure of the battery pack exceeds a preset air pressure and / or whether the current of the battery pack exceeds a preset current.

[0018] In some alternative forms, the thermal runaway detection method includes: performing protective actions in response to thermal runaway of the vehicle's battery pack.

[0019] In some alternative forms, the protective action includes: disconnecting the main circuit of the battery pack and / or activating the cooling system of the battery pack and / or sending an alarm message.

[0020] In some alternative forms, sending alarm information includes sending alarm information to the user and / or environment through the vehicle's in-vehicle infotainment system and / or user terminal and / or server.

[0021] According to another aspect of the present invention, a computer device is provided, the computer device including a memory, a processor and instructions stored in the memory and executable by the processor, wherein the processor executes the instructions to implement the above-described method for detecting thermal runaway of a vehicle.

[0022] According to another aspect of the present invention, a computer-readable storage medium is provided having computer-executable instructions stored thereon for performing the above-described method for detecting thermal runaway of a vehicle.

[0023] According to another aspect of the present invention, a computer program product is provided, comprising computer-executable instructions, characterized in that the computer-executable instructions, when executed by at least one processor, implement the above-described method for detecting thermal runaway of a vehicle.

[0024] The thermal runaway detection system and method for vehicles provided by this invention utilize the temperature change of the battery pack to cause the fluid conductive medium in the wake-up device to expand and flow at high temperature, and connect the detection unit and the power supply through the conductive part. The detection unit is woken up by a physical mechanism. When the vehicle is in sleep mode, there is no need to provide continuous power to the wake-up device and / or the detection unit, which reduces the standby power consumption of the vehicle. Furthermore, no other sensors or control systems are required, which reduces the manufacturing cost of the vehicle. Attached Figure Description

[0025] Other features and advantages of the present invention will be better understood through the following detailed description of optional embodiments in conjunction with the accompanying drawings, wherein:

[0026] Figure 1 A schematic block diagram of a vehicle thermal runaway detection system according to an embodiment of the present invention is shown;

[0027] Figure 2 It shows Figure 1 A schematic diagram of the wake-up device in the diagram;

[0028] Figure 3 A schematic flowchart of a vehicle thermal runaway detection method according to an embodiment of the present invention is shown;

[0029] Figure 4 A schematic flowchart of a vehicle thermal runaway detection method according to another embodiment of the present invention is shown; and

[0030] Figure 5 A schematic block diagram of a computer device according to an embodiment of the present invention is shown. Detailed Implementation

[0031] The implementation and use of the embodiments are discussed in detail below. While the exemplary methods and systems described below include software and / or firmware executed on hardware within other components, it should be noted that these examples are merely illustrative and should not be considered limiting. Therefore, although exemplary methods and systems have been described below, those skilled in the art will readily understand that the specific embodiments discussed are merely exemplary of particular ways of implementing and using the invention, and not intended to limit the scope of the invention.

[0032] Furthermore, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods and systems according to various embodiments of the present invention. It should be noted that the functions indicated in the blocks may occur in a different order than that shown in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, or they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the flowcharts and / or block diagrams, and combinations of blocks in the flowcharts and / or block diagrams, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0033] When a vehicle is in sleep mode, all controllers cease operation to reduce power consumption. If thermal runaway occurs in the vehicle's battery pack during this time, the controllers are powered down, preventing the vehicle from detecting the anomaly in a timely manner and thus hindering its response. Currently, one approach involves placing sensors within the battery pack to wake up the controllers. These sensors, such as barometric pressure sensors, utilize changes in gas pressure generated during thermal runaway to trigger wake-up. However, when the amount of gas generated in the early stages of thermal runaway is small or gas diffusion is limited, barometric pressure wake-up may fail to accurately detect the issue, preventing the controllers from being woken up in time for thermal runaway detection and protection. Furthermore, using sensors for wake-up requires the sensors to be continuously powered on to monitor environmental changes in real time, ensuring timely triggering and increasing the vehicle's standby power consumption. On the other hand, some thermal runaway detection systems are designed to periodically and actively wake up the sensors to monitor the battery pack's status. While this approach can reduce sensor power consumption during vehicle sleep to some extent, it reduces detection accuracy and increases the complexity of the thermal runaway detection system design.

[0034] In view of this, the present invention first proposes a vehicle thermal runaway detection system 100. Combined with... Figure 1 and Figure 2As shown, the thermal runaway detection system 100 includes a power supply 110, a wake-up device 120, and a detection unit 130. The power supply 110 provides power; it can be a 12V battery from the vehicle, eliminating the need for an additional power source and reducing the cost of the thermal runaway detection system 100. The wake-up device 120 is connected between the power supply 110 and the detection unit 130. When a conductive path is formed in the wake-up device 120, the power supply 110 and the detection unit 130 are electrically connected, energizing the detection unit 130 to perform thermal runaway detection of the vehicle's battery pack. In this embodiment, the wake-up device 120 can be located within the vehicle's battery pack to electrically connect the power supply 110 and the detection unit 130 in response to changes in the battery pack's state. For example, a wake-up device 120 can be located in the middle of the battery pack, or one wake-up device 120 can be provided for each battery module in the battery pack, or one wake-up device 120 can be provided for each row or column of battery modules in the battery pack. It is understood that the placement of the wake-up device 120 within the battery pack is not limited to this and can be changed as needed. Furthermore, the wake-up device 120 can be located on the crossbeams, side beams, or other positions of the battery pack's casing; this is not limited to these locations.

[0035] exist Figure 2 In the wake-up device, a housing 122 is included, which contains a flowable conductive medium 123 and is provided with at least two conductive parts 124. Figure 2 The diagram shows two conductive portions 124 disposed on the housing 122, with the power supply 110 and detection unit 130 respectively connected to the two conductive portions 124. Additional conductive portions 124 can provide redundant protection. If the two conductive portions 124 connecting the power supply 110 and detection unit 130 fail due to factors such as wear and tear and cannot conduct electricity normally, the power supply 110 and detection unit 130 can be connected to other conductive portions 124 to ensure the wake-up function of the wake-up device. Furthermore, the additional conductive portions 124 can also be connected to other units that need to be woken up, such as the protection unit 140 described below.

[0036] like Figure 2 In the state shown, the two conductive parts 124 are spaced apart, and the wake-up device is in the off state. When the conductive medium 123 flows between the conductive parts 124, the conductive parts 124 will be turned on, making the power supply 110 electrically connected to the detection unit 130 to wake up the detection unit 130. Specifically, when the temperature inside the battery pack rises, the conductive medium 123 will expand inside the housing 122 due to heat, and the housing 122 will... Figure 2 When placed in the orientation shown, the conductive medium 123 will expand vertically upwards. When the temperature inside the battery pack reaches a preset temperature threshold, the conductive medium 123 will flow between the conductive parts 124, thereby forming a conductive path between the conductive parts 124. It should be noted that, in Figure 2In the middle, the housing 122 is placed in a vertical direction, but its placement is not limited to this and can be changed according to the arrangement inside the battery pack.

[0037] In this manner, the thermal runaway detection system according to this embodiment utilizes the temperature change of the battery pack to cause the fluid conductive medium in the wake-up device to expand and flow at high temperatures, electrically connecting the detection unit and the power supply through the conductive part. This physical mechanism wakes up the detection unit. When the vehicle is in sleep mode, there is no need to provide continuous power to the wake-up device and / or the detection unit, reducing the vehicle's standby power consumption. Furthermore, no other sensors or control systems are required, reducing vehicle manufacturing costs. Additionally, once the wake-up device is activated, the detection unit can be woken up directly without waiting for instructions from other controllers, improving the detection speed of thermal runaway.

[0038] In this embodiment, the housing 122 is constructed as a tubular structure and includes a base 121 for accommodating the conductive medium 123. The housing 122 is provided with a longitudinal section... Figure 2 The housing 122 has a vertically extending channel 125 within which a conductive medium 123 can flow. The housing 122 has a sidewall 126 substantially parallel to the extending direction of the channel 125, and a conductive portion 124 can be disposed on the sidewall 126. In some embodiments, the sidewall 126 may have a through-hole (not shown) adapted to the conductive portion 124, into which the conductive portion 124 is embedded. It is understood that the structure of the housing 122 is not limited to that shown in the figures and can be modified as needed.

[0039] In some embodiments, the housing 122 may be made of an insulating material, such as glass or ceramic, and the conductive portion 124 may be made of a metallic material, such as copper, to ensure that the conductive path created by the conductive medium 123 occurs between the conductive portions 124, unaffected by other external electric fields, and to prevent the wake-up device 120 from being falsely triggered. The conductive medium 123 may include a liquid metal, such as mercury, to expand upon heating and form a conductive path between the conductive portions 124. It is understood that the conductive medium 123 is not limited to this; for example, the conductive medium 123 may also include an ionic liquid, such as a salt solution containing aluminum.

[0040] In this embodiment, the housing 122 can be designed to be sealable to prevent the conductive medium 123 from leaking out of the wake-up device 120. For example, when the conductive part 124 is embedded in a through-hole in the side wall 126 of the housing 122, a seal (not shown), such as a sealing ring, can be provided between each conductive part 124 and the housing 122 to prevent the conductive medium 123 from leaking out of the housing 122. This prevents the conductive medium 123 from leaking out and failing to flow between the conductive parts 124 when the temperature reaches a preset temperature threshold, thus preventing a conductive path from being established and affecting the wake-up function of the wake-up device 120. Furthermore, since the conductive medium 123 is corrosive, the sealable housing 122 can prevent the conductive medium 123 from damaging other surrounding components such as the battery module.

[0041] Furthermore, the preset temperature threshold for activating the wake-up device 120 can be between the battery pack's operating temperature and its thermal runaway temperature; for example, the preset temperature threshold can be within the range of 60 to 65 degrees Celsius. This allows the wake-up device 120 to be triggered when the battery pack temperature exceeds the normal operating temperature but has not yet reached the dangerous temperature for thermal runaway, thus promptly waking the detection unit, identifying potential thermal runaway risks in advance, and taking appropriate measures. Furthermore, triggering the wake-up device 120 when the temperature rises abnormally avoids frequent activation of the wake-up device 120, which increases power consumption during vehicle sleep mode and reduces unnecessary wake-ups. It is understood that the value of the preset temperature threshold is not limited to this and can be changed as needed.

[0042] In some implementations, the detection unit 130 can be a detection unit of the battery management system (BMS) of the battery pack. The BMS is responsible for monitoring various states of the battery pack, such as voltage, current, and temperature. In this way, the existing architecture and hardware resources of the BMS can be used, avoiding the need to add an additional independent detection unit, thereby reducing the complexity and cost of the thermal runaway detection system.

[0043] like Figure 1 As shown, the thermal runaway detection system 100 also includes a protection unit 140, which performs protective actions when the detection unit 130 detects thermal runaway in the vehicle's battery pack. In some embodiments, the protection unit 140 may be a protection unit for the vehicle's vehicle control unit (VCU) and / or a protection unit for the battery management system (BMS). Specifically, after waking up the detection unit 130, the detection unit 130 may send a message to the protection unit 140, for example, via the vehicle's controller area network (CAN) bus, to wake up the protection unit 140. Exemplarily, this message may include a wake-up reason, current detection data, etc.

[0044] Reference Figure 3According to an embodiment of the present invention, a thermal runaway detection method for vehicles can perform thermal runaway detection on the vehicle's battery pack using the aforementioned thermal runaway detection system. This thermal runaway detection method may include the following steps:

[0045] Step S101: When the temperature of the battery pack reaches a preset temperature threshold, the conductive medium 123 of the wake-up device 120 of the thermal runaway detection system 100 is allowed to flow between at least two conductive parts 124 so that the detection unit 130 is electrically connected to the power supply 110.

[0046] Step S102: Detect thermal runaway of the vehicle's battery pack using the detection unit 130.

[0047] Please refer to the above text for the functionality of the vehicle thermal runaway detection method according to this embodiment. Figures 1 to 2 The content mentioned above will not be repeated here.

[0048] Reference Figure 4 A vehicle thermal runaway detection method according to another embodiment of the present invention may include the following steps:

[0049] Step S201: When the temperature of the battery pack reaches a preset temperature threshold, the conductive medium 123 of the wake-up device 120 of the thermal runaway detection system 100 is allowed to flow between at least two conductive parts 124 so that the detection unit 130 is electrically connected to the power supply 110.

[0050] Step S202: The detection unit 130 detects whether the temperature of the battery pack exceeds the preset temperature and / or whether the air pressure of the battery pack exceeds the preset air pressure and / or whether the current of the battery pack exceeds the preset current.

[0051] In step S202, detection data from the detection unit 130 is provided as an example. It should be understood that the detection data is not limited to this and can be changed as needed. In addition, the values ​​of preset temperature, preset air pressure, and preset current can be set and changed as needed, and are not limited in this embodiment.

[0052] Step S203: Execute protective actions in response to thermal runaway of the vehicle's battery pack.

[0053] If the detection result in step S202 is "Y", meaning the battery pack temperature exceeds a preset temperature and / or the battery pack pressure exceeds a preset pressure and / or the battery pack current exceeds a preset current, it indicates that the vehicle's battery pack has experienced thermal runaway. The detection unit 130 can then activate the protection unit 140 to perform protective actions. In some embodiments, the protective actions may include disconnecting the battery pack's main circuit, thereby cutting off heat generated by the battery pack, for example, due to an internal short circuit. It is understood that the protective actions are not limited to this. In one example, the protection unit 140 may also control the battery pack's cooling system to activate, reducing the battery pack's temperature and the rate of temperature rise, thus providing more time for evacuation and other rescue measures. In another example, the protection unit 140 may send alarm information. In some embodiments, the protection unit 140 may send alarm information to the user and / or the environment through the vehicle's infotainment system (e.g., dashboard, infotainment system, etc.) and / or user terminal (e.g., mobile phone, tablet, smartwatch, etc.) and / or server (e.g., vehicle networking platform, cloud server, etc.). For example, the protection unit 140 can send alarm information to the user through the vehicle management APP on the user terminal, or the protection unit 140 can send alarm information to nearby vehicles, public infrastructure (such as electronic screens, traffic lights, etc.) through the server to send alarm information to the environment.

[0054] If the detection result in step S202 is "N", meaning the vehicle's battery pack has not experienced thermal runaway, and if the temperature inside the battery pack drops, the housing 122 of the wake-up device 120 will... Figure 2 When arranged in the indicated orientation, the conductive medium 123 will fall vertically downwards into the base 121, the conductive path between the conductive parts 124 will be broken, the detection unit 130 will be disconnected from the power supply 110, and the detection unit 130 can return to its dormant state. At this time, the process returns to step S201 to continuously monitor the temperature inside the battery pack through the wake-up device 120. If the vehicle's battery pack does not experience thermal runaway, but the detection unit 130 remains awake, it indicates that the battery pack's operating temperature is too high. The detection unit 130 can then wake up the protection unit 140, which can control the battery pack's cooling system to activate, thereby reducing the temperature inside the battery pack to its normal operating temperature.

[0055] Reference Figure 5 , Figure 5 This is a schematic diagram of a computer device according to one embodiment of the present invention.

[0056] The present invention also provides a computer device 200, such as Figure 5As shown, the computer device 200 may include a memory 210 and a processor 220. The memory 210 may store instructions 211, which may be executed by the processor 220. When the processor 220 executes the instructions 211, it implements the thermal runaway detection method for a vehicle according to the above-described embodiment.

[0057] The computer device 200 in this embodiment can be a laptop, desktop computer, or cloud server, etc. It is understood that the components included in the computer device 200 are not limited to the memory 210 and processor 220, and can vary depending on different needs. Exemplarily, the computer device 200 may also include multiple components connected to its input / output interfaces (…). Figure 5 (Not shown in the image), including but not limited to: input units, such as keyboards, mice, etc.; output units, such as displays, speakers, etc.; storage units, such as semiconductor storage devices, magnetic surface storage devices, optical storage devices, etc.; and communication modules, such as network interface cards, wireless communication transceivers, etc.

[0058] In some implementations, memory 210 may include, for example, random access memory (RAM) or read-only memory (ROM). Memory 210 may be used to store instructions, programs, code, and other programs and data required by the computer device, but is not limited thereto.

[0059] In addition, the processor 220 can be a central processing unit (CPU) or other general-purpose processors, such as digital signal processing (DSP), field-programmable gate array (FPGA), programmable logic array (PLA), etc.

[0060] In an exemplary embodiment of the present invention, a computer-readable storage medium is also provided having computer-executable instructions stored thereon for performing a thermal runaway detection method for a vehicle according to the above embodiments.

[0061] Optionally, the computer-readable storage medium according to this embodiment may be a ROM, RAM, semiconductor storage device, magnetic surface storage device, and optical storage device, etc.

[0062] The present invention also proposes a computer program product comprising computer-executable instructions that, when executed, cause at least one processor to perform the thermal runaway detection method for a vehicle according to the above embodiments.

[0063] Generally, various embodiments of the present invention can be implemented in hardware, dedicated circuitry, software programs, firmware, logic circuitry, or any combination thereof, as needed. Specifically, some aspects may be implemented in hardware, while others may be implemented in firmware or software programs executable by a controller, microprocessor, or other computing device. When aspects of embodiments of the present invention are illustrated or described as block diagrams, flowcharts, or using some other graphical representation, it will be understood that the blocks, apparatuses, systems, techniques, or methods described herein can be implemented as non-limiting examples in hardware, software, firmware, dedicated circuitry, logic circuitry, general-purpose hardware, or controllers or other computing devices, or some combination thereof.

[0064] Computer-readable program instructions or computer program products for executing various embodiments of the present invention can also be stored in the cloud. When needed, users can access the computer-readable program instructions stored in the cloud for executing an embodiment of the present invention via mobile internet, fixed network or other networks, thereby implementing various embodiments of the present invention.

[0065] It should be understood that the embodiments shown in the figures only illustrate optional configurations of the thermal runaway detection system for vehicles according to the present invention; however, they are merely illustrative and not limiting. Other configurations may be adopted without departing from the spirit and scope of the present invention.

[0066] The technical content and features of the present invention have been disclosed above. However, it is understood that those skilled in the art can make various changes and improvements to the disclosed concepts under the inventive concept of the present invention, all of which fall within the protection scope of the present invention. The description of the above embodiments is illustrative rather than restrictive, and the protection scope of the present invention is determined by the claims.

Claims

1. A thermal runaway detection system for vehicles, characterized in that, The thermal runaway detection system (100) includes: Power supply (110); A detection unit (130) is configured to detect thermal runaway of the vehicle's battery pack; A wake-up device (120) is disposed within the battery pack and connected between the power source (110) and the detection unit (130). The wake-up device (120) includes a housing (122) containing a flowable conductive medium (123) and having at least two conductive portions (124). The at least two conductive portions (124) are configured to form a conductive path when the conductive medium (123) flows between the at least two conductive portions (124). The wake-up device (120) is configured to: when the temperature of the battery pack reaches a preset temperature threshold, cause the conductive medium (123) to flow between the at least two conductive parts (124) so ​​that the detection unit (130) is electrically connected to the power supply (110).

2. The thermal runaway detection system according to claim 1, characterized in that, The power supply (110) and the detection unit (130) are respectively connected to two of the at least two conductive parts (124).

3. The thermal runaway detection system according to claim 1, characterized in that, The housing (122) is constructed as a tubular structure and has a channel (125) suitable for the flow of the conductive medium (123). The housing (122) includes a sidewall (126) that is substantially parallel to the extending direction of the channel (125), and the at least two conductive parts (124) are disposed on the sidewall (126).

4. The thermal runaway detection system according to claim 1, characterized in that, The housing (122) is designed to be closable to prevent the conductive medium (123) from overflowing.

5. The thermal runaway detection system according to claim 1, characterized in that, The conductive medium (123) includes mercury.

6. The thermal runaway detection system according to claim 1, characterized in that, The detection unit (130) is configured as a detection unit of the battery management system of the battery pack.

7. The thermal runaway detection system according to any one of claims 1 to 6, characterized in that, The preset temperature threshold is between the operating temperature of the battery pack and the thermal runaway temperature.

8. The thermal runaway detection system according to any one of claims 1 to 6, characterized in that, The thermal runaway detection system (100) includes a protection unit (140) configured to perform a protective action in response to thermal runaway of the vehicle's battery pack.

9. The thermal runaway detection system according to claim 8, characterized in that, The protection unit (140) is configured as a protection unit for the vehicle controller of the vehicle and / or a protection unit for the battery management system of the battery pack.

10. A method for detecting thermal runaway in a vehicle, characterized in that, The thermal runaway detection method uses the vehicle thermal runaway detection system according to any one of claims 1 to 9 to perform thermal runaway detection on the vehicle's battery pack, wherein the thermal runaway detection method includes: When the temperature of the battery pack reaches a preset temperature threshold, the conductive medium (123) in the wake-up device (120) is allowed to flow between at least two conductive parts (124) so ​​that the detection unit (130) is electrically connected to the power supply (110) (S101; S201); Thermal runaway of the vehicle's battery pack is detected by the detection unit (130) (S102).

11. The thermal runaway detection method according to claim 10, characterized in that, Detecting thermal runaway of the vehicle's battery pack by the detection unit (130) includes: detecting whether the temperature of the battery pack exceeds a preset temperature and / or whether the air pressure of the battery pack exceeds a preset air pressure and / or whether the current of the battery pack exceeds a preset current (S202).

12. The thermal runaway detection method according to claim 10, characterized in that, The thermal runaway detection method includes: performing a protective action in response to thermal runaway of the vehicle's battery pack (S203).

13. The thermal runaway detection method according to claim 12, characterized in that, The protective actions include: disconnecting the main circuit of the battery pack and / or turning on the cooling system of the battery pack and / or sending alarm information.

14. The thermal runaway detection method according to claim 13, characterized in that, Sending alarm information includes sending alarm information to users and / or the environment through the vehicle's in-vehicle infotainment system and / or user terminal and / or server.

15. A computer device, characterized in that, The computer device includes a memory (210), a processor (220), and instructions (211) stored in the memory (210) and executable by the processor (220), wherein the processor (220) implements the thermal runaway detection method for a vehicle according to any one of claims 10 to 14 when executing the instructions (211).

16. A computer-readable storage medium, characterized in that, The computer-readable storage medium has computer-executable instructions stored thereon for performing the thermal runaway detection method for a vehicle according to any one of claims 10 to 14.

17. A computer program product comprising computer-executable instructions, characterized in that, When the computer-executable instructions are executed by at least one processor, the thermal runaway detection method for a vehicle according to any one of claims 10 to 14 is implemented.

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