A control method, device and vehicle

Abstract

An embodiment of the present application provides a control method, a device and a vehicle. The control method includes the following steps: responding to a vehicle accident occurrence signal; detecting the current state of the vehicle; and guiding the gas generated by the thermal runaway of the power battery to impact the escape device according to the obtained detection result, so that the escape device is in an unobstructed state. The control method of the vehicle in the embodiment of the present application can make the escape device in an unobstructed state, thereby increasing the escape probability of the driver in a car accident.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and in particular, to a control method, device, and vehicle. Background Art

[0002] Currently, thermal runaway channels are designed in the power battery packs of automobiles. When thermal runaway occurs in the battery pack, the high-temperature flue gas ejected from the explosion-proof valve of the battery cell can be heat-exchanged and cooled through the thermal runaway channel and then discharged outside the battery pack to ensure the personal safety in the passenger compartment and improve the safety of the vehicle. However, the heat after the heat exchange of the high-temperature flue gas is not fully utilized. Summary of the Invention

[0003] In view of this, embodiments of this application are expected to provide a control method, device, and storage medium for vehicle accident escape, which can utilize the gas generated by the thermal runaway of the power battery to impact the escape device, so that the escape device is in an unobstructed state, and improve the escape probability of the driver in a vehicle accident.

[0004] To achieve the above object, on the one hand, embodiments of this application provide a control method for a vehicle, including:

[0005] Responding to a vehicle accident occurrence signal;

[0006] Detecting the current state of the vehicle;

[0007] According to the obtained detection result, guiding the gas generated by the thermal runaway of the power battery to impact the escape device, so that the escape device is in an unobstructed state.

[0008] In some embodiments, the detecting the current state of the vehicle specifically includes: obtaining the driving speed of the vehicle, obtaining the state of the power battery, and obtaining the state of the escape device.

[0009] In some embodiments, the according to the obtained detection result, guiding the gas generated by the thermal runaway of the power battery to impact the escape device, so that the escape device is in an unobstructed state, specifically includes:

[0010] Determining that the driving speed of the vehicle is 0, determining that the escape device is in a restricted state, and determining that the power battery has not experienced thermal runaway;

[0011] Controlling the power battery to experience thermal runaway, and guiding the gas generated by the thermal runaway of the power battery to impact the escape device, so that the escape device is in an unobstructed state.

[0012] In some embodiments, the according to the obtained detection result specifically includes:

[0013] Determining that the driving speed of the vehicle is 0, determining that the escape device is in a restricted state, and determining that the power battery has experienced thermal runaway.

[0014] In some embodiments, the gas impact escape device for guiding the thermal runaway of the power battery specifically includes:

[0015] Collect the gas generated by the thermal runaway of the power battery and maintain the pressure so that the pressure of the collected gas is not less than the first pressure threshold;

[0016] Guide the gas to impact the escape device.

[0017] In some embodiments, after guiding the gas generated by the thermal runaway of the power battery to impact the escape device, it includes:

[0018] Determine that the pressure of the collected gas is not less than the second pressure threshold;

[0019] Guide the gas to be discharged to the outside.

[0020] Another aspect of the embodiments of the present application provides a control device, including:

[0021] An acquisition module for acquiring the detection result of the vehicle after receiving the vehicle accident occurrence signal;

[0022] A guiding module for guiding the gas generated by the thermal runaway of the power battery to impact the escape device.

[0023] Another aspect of the embodiments of the present application provides a vehicle, including:

[0024] An escape device, in the unobstructed state of the escape device, an escape passage for the occupants to escape is formed;

[0025] A power battery for participating in driving the vehicle;

[0026] A power battery pack for storing the power battery in a sealed manner, the power battery pack is provided with an installation cavity, and the power battery is arranged in the installation cavity;

[0027] An exhaust passage for guiding gas, one end of the exhaust passage communicates with the installation cavity, and the other end is open and faces the escape device, so that the gas impacts the escape device from the installation cavity through the exhaust passage;

[0028] The control device described in the foregoing embodiments.

[0029] In some embodiments, the vehicle includes a vehicle body, the control device, the escape device, the power battery pack and the exhaust passage are all arranged on the vehicle body, an occupant compartment is provided in the vehicle body, a personnel passage is provided on the vehicle body, and the escape device can selectively communicate the personnel passage with the outside.

[0030] In some embodiments, the escape device includes a vehicle door body and a connecting hinge. The connecting hinge connects the vehicle body to the vehicle door body. The vehicle door body is movably disposed over the personnel passage. The open end of the exhaust passage faces the connecting hinge. When the escape device is in an unobstructed state, the vehicle door body is separated from the vehicle body to connect the personnel passage to the outside.

[0031] In some embodiments, the exhaust passage includes a first exhaust sub-passage, a second exhaust sub-passage, and a gas collecting chamber. The first exhaust sub-passage connects the gas collecting chamber to the installation chamber. One end of the second exhaust sub-passage is selectively connected or disconnected from the gas collecting chamber, and the other end is open and faces the escape device.

[0032] In some embodiments, the vehicle includes a pressure relief passage that selectively connects the installation chamber to the outside.

[0033] The control method provided by the embodiments of the present application, when a vehicle accident occurs, receives a vehicle accident occurrence signal and gives a timely response. By detecting the current state of the vehicle, analyzes and obtains the detection result, and guides the gas generated by the thermal runaway of the power battery to impact the escape device according to the detection result, so that the escape device is in an unobstructed state, thereby increasing the chance of escape for the driver in a car accident. In addition, the control method in the embodiments of the present application, on the one hand, guides the gas generated by the thermal runaway of the vehicle power battery that should originally be discarded to impact the escape device to make the escape device unobstructed, realizing the full utilization of the gas generated by the thermal runaway of the power battery; on the other hand, the control method is creatively combined with other principles and vehicle structures based on the relevant structures of the power battery already existing in the vehicle itself, the relevant principles of the thermal runaway of the power battery, and the system, which is beneficial to saving vehicle structure and space and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic flow chart of a control method for a vehicle provided by an embodiment of the present application;

[0035] Figure 2 It is a specific schematic flow chart of a control method for a vehicle provided by an embodiment of the present application;

[0036] Figure 3 It is a schematic structural diagram of a vehicle provided by an embodiment of the present application.

[0037] DESCRIPTION OF REFERENCE NUMERALS

[0038] Vehicle body 10; Exhaust passage 10a; First exhaust sub-passage 101a; Second exhaust sub-passage 102a; Gas collecting chamber 103a; Escape device 102; Vehicle door body 1021; Connecting hinge 1022; Pressure relief passage 10b; Installation chamber 10c. Specific Embodiments

[0039] It should be noted that, without conflict, the embodiments in this application and the technical features in the embodiments can be combined with each other. The detailed description in the specific embodiments should be understood as an explanatory illustration of the purpose of this application and should not be regarded as an improper limitation of this application.

[0040] In the related art, an explosive bolt is provided at the door hinge position of a vehicle so that after a vehicle accident occurs, the deformed door body can be separated from the vehicle body by blasting the explosive bolt, facilitating the escape of the vehicle occupants. However, the explosive bolt itself has a certain degree of danger, and if it is accidentally triggered, it may pose a threat to the safety of the vehicle occupants.

[0041] One aspect of the embodiments of this application provides a control method for a vehicle. Refer to Figure 1 , including the following steps:

[0042] S1: Respond to the vehicle accident occurrence signal.

[0043] It can be understood that when a vehicle accident occurs, relevant sensors on the vehicle will send a vehicle accident occurrence signal to relevant control devices provided on the vehicle according to sudden changes in external environmental factors. On the one hand, the vehicle accident occurrence signal can alert passengers; on the other hand, after the relevant vehicle control devices respond to the vehicle accident occurrence signal, they will take further measures to reduce the risk of further losses caused by the accident.

[0044] The specific type of the relevant vehicle control device is not limited. For example, it can be a Vehicle Control Unit (VCU), a Battery Management System (BMS), etc.

[0045] The specific type of the accident encountered by the vehicle is not limited. For example, the vehicle may collide or fall into water.

[0046] S2: Detect the current state of the vehicle;

[0047] It can be understood that after receiving the vehicle accident occurrence signal, the relevant vehicle control device detects and analyzes the current state of the vehicle to determine whether the vehicle has the conditions for the vehicle occupants to escape, facilitating the further execution of subsequent operation methods. In this way, the probability of further losses caused by the accident can be reduced, and the protection of the personal safety of the occupants can be improved.

[0048] S3: According to the obtained detection result, guide the gas generated by the thermal runaway of the power battery to impact the escape device 102 so that the escape device 102 is in an unobstructed state.

[0049] It is understandable that the vehicle-related control device will guide the gas generated by the thermal runaway of the power battery to impact the escape device 102, so that the escape device 102 is in a smooth state. In this way, it is possible to create conditions for the occupants to escape, thereby increasing the chances of escaping from a car accident.

[0050] The control method provided in the embodiment of the present application receives a vehicle accident signal and responds in time when a vehicle accident occurs, detects the current state of the vehicle, analyzes and obtains the detection result, and guides the gas generated by the thermal runaway of the power battery to impact the escape device 102 according to the detection result, so that the escape device 102 is in a smooth state, thereby improving the driver's escape probability in a car accident. The control method in the embodiment of the present application guides the gas generated by the thermal runaway of the vehicle power battery to impact the escape device 102, so that the escape device 102 is unobstructed. On the one hand, the gas generated by the thermal runaway of the power battery is fully utilized; on the other hand, the implementation of this method is based on the existing power battery of the vehicle itself, and there is no need to set up an additional explosion device to keep the escape device in a smooth state, which improves safety and is conducive to saving vehicle structure and space and reducing production costs.

[0051] It is understandable that an air flow channel is provided in the vehicle to guide the flow of gas generated by thermal runaway of the power battery, so as to achieve the purpose of the gas shock escape device.

[0052] It is understandable that the specific current state type of the vehicle is not limited to be detected, and the relevant parameters of the vehicle can be detected in a targeted manner according to the specific type of accident.

[0053] In some embodiments, detecting the current state of the vehicle specifically includes: obtaining the driving speed of the vehicle, obtaining the state of the power battery, and obtaining the state of the escape device 102. By detecting and analyzing the driving speed of the vehicle and the state of the escape device 102, it is determined whether the vehicle has the conditions for the occupants to escape, and by detecting and analyzing the state of the power battery, different operation methods for solving the problem are executed.

[0054] For example, obtaining the driving speed of the vehicle is divided into two cases: the driving speed of the vehicle is 0 and the driving speed of the vehicle is not 0. Determining that the driving speed of the vehicle is 0 is to ensure that the passengers in the vehicle have a relatively safe environment to escape in the case of vehicle stop. Obtaining the state of the power battery is divided into two cases: the power battery has a thermal runaway and the power battery does not have a thermal runaway. Determining the state of the power battery is, on the one hand, to ensure that the passengers in the vehicle can use the gas generated by the thermal runaway of the power battery to impact the escape device to achieve the smoothness of the escape device 102 when the escape device is not in a smooth state; on the other hand, to ensure that the passengers in the vehicle can reduce the safety hazards brought by the thermal runaway of the power battery when there is no need for escape conditions. Obtaining the state of the escape device 102 is divided into two cases: the escape device 102 is in a restricted state and the escape device 102 is not in a restricted state. Determining the state of the escape device 102 is to determine whether the passengers in the vehicle can independently open the escape device 102 to achieve escape when an accident occurs.

[0055] It can be understood that when the driving speed of the vehicle is 0 and the escape device 102 is in a restricted state occur simultaneously, the vehicle does not have the conditions for the passengers in the vehicle to escape. Therefore, measures need to be taken for the power battery to make the escape device in a smooth state.

[0056] In some embodiments, the obtained detection results are determining that the driving speed of the vehicle is 0, determining that the escape device 102 is in a restricted state, and determining that the power battery does not have a thermal runaway. That is to say, at this time, the vehicle does not have the conditions for the passengers in the vehicle to escape. After determining that the power battery does not have a thermal runaway, in order to achieve the purpose of making the escape device in a smooth state, actively control the power battery to have a thermal runaway to generate gas, and guide the gas generated by the thermal runaway of the power battery to impact the escape device 102 to make the escape device 102 in a smooth state.

[0057] The specific manner of actively controlling the power battery to have a thermal runaway is not limited. Exemplarily, it is possible to actively control mechanical puncture to damage the power battery, actively control the circuit short - circuit of the power battery, or actively increase the external environmental temperature of the power battery, etc.

[0058] In some embodiments, the obtained detection results are determining that the driving speed of the vehicle is 0, determining that the escape device 102 is in a restricted state, and determining that the power battery has a thermal runaway; controlling the power battery to have a thermal runaway, and guiding the gas generated by the thermal runaway of the power battery to impact the escape device to make the escape device in a smooth state. That is to say, at this time, the vehicle does not have the conditions for the passengers in the vehicle to escape. At the same time, the power battery has a thermal runaway and generates gas, and directly guides the gas generated by the thermal runaway of the power battery to impact the escape device 102 to make the escape device 102 in a smooth state, thereby saving the operation time of the steps and enhancing the guarantee of personnel safety.

[0059] In some embodiments, the obtained detection results are that the driving speed of the vehicle is determined to be 0, the escape device 102 is determined not to be in a restricted state, and it is determined that the power battery has a thermal runaway. That is to say, at this time, the vehicle has the conditions for the vehicle occupants to escape, and the vehicle occupants can directly escape.

[0060] In some embodiments, the obtained detection results are that the driving speed of the vehicle is determined to be 0, the escape device 102 is determined not to be in a restricted state, and it is determined that the power battery has not had a thermal runaway. That is to say, at this time, the vehicle has the conditions for the vehicle occupants to escape, and the vehicle occupants can directly use the escape device to escape.

[0061] In some embodiments, guiding the gas generated by the thermal runaway of the power battery to impact the escape device 102 specifically includes: collecting the gas generated by the thermal runaway of the power battery, maintaining the pressure until the pressure of the collected gas is not less than the first pressure threshold; guiding the gas to impact the escape device 102.

[0062] It can be understood that at the first pressure threshold, the collected gas can use the pressure in this state to impact the escape device 102, thereby increasing the impact force of the gas on the escape device and facilitating the escape device 102 to be in an unobstructed state. In the initial stage of the gas generated by the thermal runaway of the power battery, the pressure and energy of the gas may not ensure the unobstructed state of the escape device 102. Therefore, it is necessary to collect the gas generated by the thermal runaway of the power battery and perform a pressure maintenance process on the pressure of the collected gas until the pressure of the collected gas is not less than the first pressure threshold, and then guide the gas to impact the escape device 102 to achieve the unobstructed state of the escape device 102.

[0063] It can be understood that after the gas generated by the thermal runaway of the power battery accumulates to a certain extent, there may be safety hazards due to excessive pressure, such as damaging the vehicle structure and causing the vehicle to explode, etc.; in addition, when it is not necessary to use the gas generated by the thermal runaway of the power battery to impact the escape device 102, in order to ensure the safety of the vehicle and the vehicle occupants, relevant measures need to be taken to discharge the gas generated by the thermal runaway of the power battery to the outside.

[0064] In some embodiments, after guiding the gas generated by the thermal runaway of the power battery to impact the escape device 102, the control method further includes: determining that the pressure of the collected gas is not less than the second pressure threshold; guiding the gas to be discharged to the outside.

[0065] After using the gas generated by the thermal runaway of the power battery to impact the escape device 102 to achieve the unobstructed state of the escape device 102, the thermal runaway of the power battery may still continuously generate gas. When the pressure of the collected gas is not less than the second pressure threshold, in order to ensure the safety of the vehicle and the vehicle occupants, the excess gas generated by the thermal runaway of the power battery is discharged to the outside.

[0066] It is understandable that the second air pressure threshold is greater than the first air pressure threshold.

[0067] In some embodiments, to improve safety and enable vehicle occupants to independently control the execution process of the control method according to the actual situation, a sensing device is added and electrically connected to the relevant control system of the control method, so that vehicle occupants can independently control the execution process of the control method through the sensing device.

[0068] The specific form of the sensing device is not limited. Exemplarily, the sensing device can be a fingerprint control switch, a mechanical button, a voice control device, etc.

[0069] In some embodiments, the sensing device includes a standby state, an activation state, and an on state. The standby state means that the relevant control system of the control method does not power on the sensing device, and the sensing device cannot function, and at this time, vehicle occupants cannot independently control the execution process of the control method through the sensing device; the activation state means that the relevant control system of the control method powers on the sensing device, and the sensing device can function, and at this time, vehicle occupants can independently decide whether to turn on the sensing device to control the execution process of the control method; the on state means that after vehicle occupants independently turn on the sensing device, the sensing device can send relevant control instructions to the relevant control system of the control method to control the execution process of the control method.

[0070] The specific number and specific function of the sensing device are not limited.

[0071] In some embodiments, the sensing device includes a first sensing device, a second sensing device, and a third sensing device.

[0072] Under normal working conditions, the first sensing device, the second sensing device, and the third sensing device are always in the standby state. After an accident occurs in the vehicle and it is confirmed that the escape device is not in a clear state, the first sensing device switches to the activation state; the vehicle occupants control the first sensing device to switch from the activation state to the on state, so that both the second sensing device and the third sensing device switch from the standby state to the activation state. The vehicle occupants control the second sensing device to switch from the activation state to the on state, so that the power battery undergoes thermal runaway. The vehicle occupants control the third sensing device to switch from the activation state to the on state, so that the air flow channel in the vehicle is in a conducting state, guiding the gas generated by the thermal runaway of the power battery to impact the escape device.

[0073] It should be noted that when the escape device is not in a clear state, vehicle occupants cannot independently open the escape device to escape, nor can they escape through other means, and this state is defined as an escape-limited state.

[0074] See Figure 2 , the specific implementation manner of the control method in a specific embodiment of the present application is as follows:

[0075] S10: In response to a vehicle accident occurrence signal;

[0076] S20: Determine that the driving speed of the vehicle is 0;

[0077] S30: Determine that the first sensing device is in an activated state;

[0078] S40: Determine whether the escape position is in a restricted escape state. If it is determined that the escape position is in a restricted escape state, then execute step S50; if it is determined that the escape position is not in a restricted escape state, then execute step S90;

[0079] S50: Determine that the first sensing device is in an on state to activate the second sensing device and the third sensing device;

[0080] S60: Determine whether the power battery has a thermal runaway. If it is determined that the power battery has a thermal runaway, then execute step S70; if it is determined that the power battery does not have a thermal runaway, then execute step S80;

[0081] S70: Determine that the third sensing device is in an on state to direct gas to impact the escape device 102;

[0082] S80: Determine that the second sensing device is in an on state to control the thermal runaway of the power battery;

[0083] S90: Determine that the power battery has a thermal runaway;

[0084] S100: Direct the gas to the outside.

[0085] It should be noted that, between step S40 and step S50, when it is determined that the escape position is in a restricted state, the vehicle occupants need to independently activate the first sensing device to activate the second sensing device and the third control sensing device; between step S60 and step S70, when it is determined that the power battery has a thermal runaway, the vehicle occupants need to independently activate the third sensing device to direct the gas impact on the escape device 102; between step S60 and step S70, when it is determined that the power battery has not had a thermal runaway, the vehicle occupants need to independently activate the second sensing device to control the power battery to have a thermal runaway. It can be understood that since the control method provided in this application uses the gas generated by the thermal runaway of the power battery to impact the escape device 102, the escape device 102 is made unobstructed, creating conditions for the vehicle occupants to escape and increasing the chance of escape for the driver in a vehicle accident. That is to say, when implementing the control method provided in this application, in addition to obtaining the vehicle's driving speed, the status of the power battery, and the status of the escape device 102 through vehicle devices, the vehicle occupants can also make independent operation confirmations according to the actual situation. The two aspects cooperate with each other to ensure that the control method is completed in the actual situation where it needs to be executed, reducing the chance of false triggering and facilitating the vehicle occupants to timely understand the current steps of the control method being executed.

[0086] Another aspect of the embodiment of the present application provides a control device, which includes an acquisition module and a guidance module. The acquisition module is used to obtain the detection result of the vehicle after receiving the vehicle accident occurrence signal; the guidance module is used to guide the gas generated by the thermal runaway of the power battery to impact the escape device.

[0087] Specifically, during the execution of the control method, after receiving the vehicle accident occurrence signal, by detecting and analyzing the current state of the vehicle, the acquisition module can obtain the detection result of the vehicle. When the detection result of the vehicle controls the power battery to have a thermal runaway or the detection result of the vehicle shows that the power battery has already had a thermal runaway, the gas generated by the power battery installed in the power battery pack is guided and impacts the escape device 102, so that the escape device 102 is made unobstructed, that is, the personnel passage is connected to the outside.

[0088] Another aspect of the embodiment of the present application provides a vehicle, which includes an escape device 102, a power battery, a control device, a power battery pack for hermetically storing the power battery, a power battery for participating in driving the vehicle, and an exhaust passage 10a for guiding gas. In the unobstructed state of the escape device 102, the escape device 102 forms an escape passage for the occupants to escape; the power battery is used to participate in driving the vehicle; the power battery pack is provided with an installation cavity 10c, and the power battery is arranged in the installation cavity 10c; one end of the exhaust passage 10a is connected to the installation cavity 10c, and the other end is open and faces the escape device 102, so that the gas impacts the escape device 102 from the installation cavity 10c through the exhaust passage 10a.

[0089] In the embodiments of the present application, the specific type of the vehicle is not limited. A pure electric vehicle can be used; a hybrid vehicle can also be used. It is only necessary to satisfy that the power battery can participate in driving the vehicle to achieve the purpose of vehicle driving. The specific form of the escape device 102 is not limited and can be a part of the existing structure of the vehicle. Exemplarily, the escape device 102 may include a car door body 1021 and a connecting hinge 1022. The escape device 102 may also include a window door of the vehicle sunroof and a connecting hinge 1022. The escape device 102 may further include a trunk lid of the vehicle and a connecting hinge 1022.

[0090] In some embodiments, the vehicle includes a vehicle body, and a control device, an escape device 102, a power battery pack, and an exhaust passage 10a are all arranged on the vehicle body 10. An occupant compartment is provided in the vehicle body 10, a personnel passage is provided on the vehicle body 10, and the escape device 102 can selectively communicate the personnel passage with the outside.

[0091] See Figure 3 , in some embodiments, the escape device 102 includes a car door body 1021 and a connecting hinge 1022. The connecting hinge 1022 connects the vehicle body 10 and the car door body 1021. The car door body 1021 is movably disposed on the personnel passage, and the open end of the exhaust passage 10a faces the connecting hinge 1022. When the escape device 102 is in an unobstructed state, the car door body 1021 is separated from the vehicle body 10 to communicate the personnel passage with the outside. Specifically, when guiding the gas generated by the power battery to impact the escape device 102, the gas uses pressure to break the connecting hinge 1022 connecting the vehicle body 10 and the car door body 1021, so that the car door body 1021 is separated from the vehicle body 10, realizing the unobstructed state of the escape device 102, forming a personnel passage communicating with the outside, and enabling the passengers in the vehicle to escape from the accident through the personnel passage.

[0092] See Figure 3 , in some embodiments, the exhaust passage 10a includes a first exhaust sub-channel 101a, a second exhaust sub-channel 102a, and a gas collecting chamber 103a. The first exhaust sub-channel 101a communicates the gas collecting chamber 103a with the installation chamber 10c. One end of the second exhaust sub-channel 102a can be selectively communicated with and disconnected from the gas collecting chamber 103a, and the other end is open and faces the escape device 102. After the power battery has a thermal runaway, in order to ensure that the gas generated by the power battery has sufficient pressure to impact the escape device 102, after the gas is discharged from the installation chamber 10c through the first exhaust sub-channel 101a, it is necessary to introduce the gas into the gas collecting chamber 103a for collection and pressure maintenance, so that the air pressure of the collected gas is not less than the first air pressure threshold, and then discharged through the second exhaust sub-channel 102a to impact the escape device 102, so that the escape device 102 is unobstructed, forming a personnel passage for the passengers in the vehicle to escape from the accident.

[0093] Understandably, the specific number of the second exhaust sub-channels 102a depends on actual requirements. In some embodiments, the escape device 102 includes a vehicle door body 1021 and a connecting hinge 1022, and the number of the second exhaust sub-channels 102a is the same as and corresponds one-to-one to that of the connecting hinges 1022. In order to enable the rapid escape of the vehicle occupants, when guiding the gas generated by the power battery to impact the escape device 102, all the connecting hinges 1022 of the vehicle can be damaged simultaneously, which is beneficial for the separation of the vehicle door body 1021 from the vehicle body and the formation of multiple personnel channels communicating with the outside, thereby increasing the probability of the vehicle occupants escaping from the accident.

[0094] See Figure 3 , in some embodiments, the vehicle includes a pressure relief channel 10b, and the pressure relief channel 10b selectively communicates the installation cavity 10c with the outside. On the one hand, when an accident occurs to the vehicle but the escape device 102 is in an unobstructed state and the power battery has a thermal runaway, the gas generated by the thermal runaway of the power battery does not need to be used to impact the escape device 102. However, the gas generated by the thermal runaway of the power battery may pose safety hazards, such as damaging the vehicle structure and causing the vehicle to explode. To ensure the safety of the vehicle and the vehicle occupants, the gas generated by the thermal runaway of the power battery is discharged from the installation cavity 10c to the outside through the pressure relief channel 10b; on the other hand, when an accident occurs to the vehicle but the escape device 102 is not in an unobstructed state, after using the gas generated by the thermal runaway of the power battery to impact the escape device 102, the power battery may still continuously generate gas during the thermal runaway. To ensure the safety of the vehicle and the vehicle occupants, the excess gas generated by the thermal runaway of the power battery needs to be discharged from the installation cavity 10c to the outside through the pressure relief channel 10b.

[0095] The various embodiments / implementations provided in this application can be combined with each other without conflict. The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A control method for a vehicle, characterized in that, Comprising: In response to a vehicle accident occurrence signal; Detect the current state of the vehicle; According to the obtained detection result, guide the gas generated by the thermal runaway of the power battery to impact the escape device, so that the escape device is in an unobstructed state; The guiding the gas generated by the thermal runaway of the power battery to impact the escape device according to the obtained detection result, so that the escape device is in an unobstructed state specifically includes: Determine that the driving speed of the vehicle is 0, determine that the escape device is in a restricted state, and determine that the power battery has not experienced thermal runaway; Control the power battery to experience thermal runaway, and guide the gas generated by the thermal runaway of the power battery to impact the escape device, so that the escape device is in an unobstructed state.

2. The control method according to claim 1, wherein The detecting the current state of the vehicle specifically includes: obtaining the driving speed of the vehicle, obtaining the state of the power battery, and obtaining the state of the escape device.

3. The control method according to claim 1, wherein The according to the obtained detection result specifically includes: Determine that the driving speed of the vehicle is 0, determine that the escape device is in a restricted state, and determine that the power battery has experienced thermal runaway.

4. The control method according to claim 1, wherein The guiding the gas generated by the thermal runaway of the power battery to impact the escape device specifically includes: Collect the gas generated by the thermal runaway of the power battery, and maintain the pressure so that the pressure of the collected gas is not less than the first pressure threshold; Guide the gas to impact the escape device.

5. The control method according to claim 4, wherein After the guiding the gas generated by the thermal runaway of the power battery to impact the escape device, it includes: Determine that the pressure of the collected gas is not less than the second pressure threshold; Guide the gas to be discharged to the outside.

6. A control device applying the control method according to any one of claims 1-5, characterized in that, Comprising: An acquisition module, configured to acquire the detection result of the vehicle after receiving the vehicle accident occurrence signal; A guiding module, configured to guide the gas generated by the thermal runaway of the power battery to impact the escape device.

7. A vehicle, characterized in that, Comprising: An escape device, in the unobstructed state of the escape device, the escape device forms an escape passage for the occupants to escape; A power battery, configured to participate in driving the vehicle; A power battery pack for hermetically storing the power battery, the power battery pack is provided with an installation cavity, and the power battery is arranged in the installation cavity; An exhaust passage for guiding gas, one end of the exhaust passage communicates with the installation cavity, and the other end is open and faces the escape device, so that the gas generated by the thermal runaway of the power battery impacts the escape device from the installation cavity through the exhaust passage; The control device according to claim 6.

8. The vehicle according to claim 7, characterized in that, The vehicle includes a vehicle body, the control device, the escape device, the power battery pack, and the exhaust passage are all arranged on the vehicle body, an occupant compartment is provided in the vehicle body, a personnel passage is provided on the vehicle body, and the escape device can selectively connect the personnel passage with the outside.

9. The vehicle according to claim 8, characterized in that, The escape device includes a car door body and a connecting hinge, the connecting hinge connects the vehicle body and the car door body, the car door body is movably covered on the personnel passage, the open end of the exhaust passage faces the connecting hinge, and in the unobstructed state of the escape device, the car door body is separated from the vehicle body to connect the personnel passage with the outside.

10. The vehicle according to claim 8, wherein The exhaust passage includes a first exhaust sub-passage, a second exhaust sub-passage and a gas collecting cavity. The first exhaust sub-passage communicates the gas collecting cavity with the installation cavity. One end of the second exhaust sub-passage is selectively open or closed to the gas collecting cavity, and the other end is open and faces the escape device.

11. The vehicle according to claim 8, characterized in that, The vehicle includes a pressure relief passage that selectively communicates the installation cavity with the outside.

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