Battery separation system, control method thereof and vehicle

Abstract

The invention discloses a battery separation system, a control method thereof and a vehicle, and relates to the field of vehicles. The method comprises the following steps: detecting state information of a battery pack and state information of a vehicle; and controlling the battery pack fixing device to separate the battery pack from the vehicle under the condition of determining that the battery pack has a fire risk according to the state information of the battery pack and / or the state information of the vehicle. Therefore, the battery pack can be separated from the vehicle under the condition that the battery pack has a fire risk, the threat of spontaneous combustion of the battery pack to a driver and passengers is reduced, the implementation difficulty is low, the battery pack does not need to have too high performance requirements, and the cost can be effectively controlled.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly to a control method for a battery separation system, a battery separation system, and a vehicle. Background Art

[0002] The power battery energy density of new energy vehicles is getting higher and higher. Circuit aging or being deformed by external forces during driving is likely to cause internal short - circuit and spontaneous combustion of the battery. The battery fire spreads rapidly, posing a great threat to the lives of people inside and outside the vehicle. The fire prevention solutions in related technologies mainly include increasing the space between the battery cells and the shell, designing annealing channels and fire protection covers, etc., to provide users with escape time. However, if the vehicle is deformed and the doors cannot be opened in time, people still cannot escape. Summary of the Invention

[0003] The present application aims to at least solve one of the technical problems in the related technologies to some extent. For this purpose, the first object of the present application is to propose a control method for a battery separation system. The system includes: a battery pack fixing device configured to fix a battery pack. The method includes: detecting the status information of the battery pack and the status information of the vehicle; and when it is determined that the battery pack has a risk of catching fire according to the status information of the battery pack and / or the status information of the vehicle, controlling the battery pack fixing device to separate the battery pack from the vehicle. In this way, the battery pack can be separated from the vehicle when there is a risk of the battery pack catching fire, reducing the threat of battery pack spontaneous combustion to the driver and passengers, and the implementation difficulty is small, without high performance requirements for the battery pack, thereby effectively controlling costs.

[0004] The second object of the present application is to propose a battery separation system.

[0005] The third object of the present application is to propose a vehicle.

[0006] To achieve the above object, an embodiment of the first aspect of the present application proposes a control method for a battery separation system. The system includes: a battery pack fixing device configured to fix a battery pack. The method includes: detecting the status information of the battery pack and the status information of the vehicle; and when it is determined that the battery pack has a risk of catching fire according to the status information of the battery pack and / or the status information of the vehicle, controlling the battery pack fixing device to separate the battery pack from the vehicle.

[0007] According to an embodiment of the present application, the status information of the battery pack includes the battery temperature change rate. Determining that the battery pack has a risk of catching fire according to the status information of the battery pack includes: when the battery temperature change rate is greater than a preset change rate threshold, determining that the battery pack has a risk of catching fire.

[0008] According to an embodiment of the present application, before controlling the battery pack fixing device, the method further includes: sending a reminder instruction; if a response instruction is not received within a preset time, controlling the battery pack fixing device.

[0009] According to an embodiment of the present application, the state information of the battery pack includes the battery temperature change rate, and the state information of the vehicle includes at least one of angular acceleration, rotational angular velocity, and roll angular velocity. Determining that the battery pack has a fire risk based on the state information of the battery pack and the state information of the vehicle includes: determining that the battery pack has a fire risk when at least one of the angular acceleration, rotational angular velocity, and roll angular velocity is greater than or equal to a corresponding preset threshold and the battery temperature change rate is greater than a preset change rate threshold.

[0010] According to an embodiment of the present application, the state information of the vehicle includes smoke information. Determining that the battery pack has a fire risk based on the state information of the vehicle includes: determining that the battery pack has a fire risk when the smoke information is greater than a preset concentration threshold.

[0011] According to an embodiment of the present application, before controlling the battery pack fixing device, the method further includes: responding to a packet loss instruction and controlling the battery pack fixing device.

[0012] According to an embodiment of the present application, the above method further includes: when it is determined that the battery pack has a fire risk, controlling the vehicle speed to decrease to a preset vehicle speed threshold.

[0013] According to an embodiment of the present application, the system further includes a backup battery, and the above method further includes:

[0014] When the battery pack is separated from the vehicle, controlling the backup battery to supply power to the vehicle.

[0015] To achieve the above object, an embodiment of the second aspect of the present application provides a battery separation system, including: a battery pack fixing device and a controller, wherein the battery pack fixing device is configured to fix the battery pack, and the controller is configured to detect the state information of the battery pack and the state information of the vehicle; when it is determined that the battery pack has a fire risk based on the state information of the battery pack and / or the state information of the vehicle, controlling the battery pack fixing device to separate the battery pack from the vehicle.

[0016] To achieve the above object, an embodiment of the third aspect of the present application provides a vehicle, including a memory, a processor, and a control program of the battery separation system stored in the memory and executable on the processor. When the processor executes the control program of the battery separation system, the control method of the foregoing battery separation system is implemented.

[0017] A battery separation system, a control method thereof, and a vehicle according to an embodiment of the present application detect status information of a battery pack and status information of the vehicle; when it is determined according to the status information of the battery pack and / or the status information of the vehicle that there is a risk of fire in the battery pack, the battery pack fixing device is controlled to separate the battery pack from the vehicle. In this way, the battery pack can be separated from the vehicle when there is a risk of fire in the battery pack, reducing the threat of spontaneous combustion of the battery pack to the driver and passengers, and the implementation difficulty is small, without high performance requirements for the battery pack, thereby effectively controlling costs. Description of the Drawings

[0018] Figure 1 FIG. is a flowchart of a control method for a battery separation system according to some embodiments of the present application;

[0019] Figure 2 FIG. is a schematic structural diagram of a battery separation system according to some embodiments of the present application;

[0020] Figure 3 FIG. is a schematic structural diagram of a battery separation system according to some other embodiments of the present application;

[0021] Figure 4 FIG. is a block diagram of a vehicle according to some embodiments of the present application. Detailed Embodiments

[0022] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application and should not be construed as a limitation to the present application.

[0023] The battery separation system, the control method thereof, and the vehicle according to the embodiments of the present application will be described in detail below with reference to the drawings.

[0024] In some embodiments, the battery separation system includes: a battery pack fixing device configured to fix the battery pack.

[0025] Figure 1 FIG. is a flowchart of a control method for a battery separation system according to some embodiments of the present application. Referring to Figure 1 , the control method of the battery separation system according to the embodiments of the present application may include the following steps:

[0026] S110, detecting status information of the battery pack and status information of the vehicle.

[0027] Specifically, the status information of the battery pack includes the battery temperature change rate. The battery temperature can be detected by a temperature sensor disposed inside the battery pack, and the battery temperature change rate is calculated based on the time points at which the battery temperature is collected.

[0028] The state information of the vehicle includes angular acceleration, rotational angular velocity, and roll angular velocity. The angular acceleration, rotational angular velocity, and roll angular velocity can all be detected and obtained by an inertial measurement unit. The inertial measurement unit includes a three-axis gyroscope and a three-axis accelerometer. The inertial measurement unit can estimate the vehicle body attitude and lateral velocity, and then calculate the angular acceleration. The rotational angular velocity (yaw angular velocity) and roll angular velocity (pitch angular velocity) can be directly detected and obtained by the inertial measurement unit.

[0029] In addition, the state information of the vehicle may further include smoke information, which can be detected and obtained by a smoke sensor arranged near the battery pack.

[0030] It should be noted that the battery temperature change rate can also be estimated by combining simulation models with measured signals such as current, voltage, and environmental conditions. The angular acceleration, rotational angular velocity, and roll angular velocity can be detected and obtained by independent sensors. For example, the angular acceleration can be detected and obtained by an angular acceleration sensor, the rotational angular velocity can be detected and obtained by a rotational angular velocity sensor, and the roll angular velocity can be detected and obtained by a roll angular velocity sensor. The specific detection method can be determined according to the actual situation and is not limited here.

[0031] S120, when it is determined that there is a risk of fire in the battery pack based on the state information of the battery pack and / or the state information of the vehicle, control the battery pack fixing device to separate the battery pack from the vehicle.

[0032] Specifically, the state of the battery pack can be determined by detecting the battery temperature change rate. For example, if the battery temperature change rate exceeds a preset value, it indicates that there are drastic changes inside the battery and there is a risk of fire.

[0033] The state of the vehicle can be determined by detecting the angular acceleration, rotational angular velocity, and roll angular velocity. For example, if the detected lateral angular acceleration exceeds the preset value, it can be determined that the vehicle has a side collision accident; if the detected forward angular acceleration exceeds the preset value, it can be determined that the vehicle has a rear-end collision accident; if the detected backward angular acceleration exceeds the preset value, it can be determined that the vehicle hits other vehicles or objects; if the detected rotational angular velocity exceeds the preset value, it can be determined that the vehicle rotates after a collision; if the detected roll angular velocity exceeds the preset value, it can be determined that the vehicle rolls over after a collision. If it is detected that the vehicle has an accident and the battery temperature change rate exceeds the preset value, it indicates that due to the collision, there are drastic changes inside the battery and the battery pack has a risk of fire. In addition, the state of the vehicle can also be determined by detecting the smoke information. For example, if the smoke information is detected, it indicates that the battery pack has a risk of fire.

[0034] Furthermore, if it is determined that the battery pack has a risk of fire, a control signal is sent to the battery pack fixing device. After receiving the control signal, the battery pack fixing device controls the separation of the battery pack from the vehicle.

[0035] In this way, the battery pack can be separated from the vehicle when there is a risk of fire in the battery pack, reducing the threat of spontaneous combustion of the battery pack to the driver and passengers. Moreover, the implementation difficulty is small and there is no need for high performance requirements for the battery pack, thus effectively controlling the cost.

[0036] In some embodiments, the status information of the battery pack includes the battery temperature change rate. Determining that there is a risk of fire in the battery pack according to the status information of the battery pack includes: when the battery temperature change rate is greater than a preset change rate threshold, determining that there is a risk of fire in the battery pack. Among them, the preset change rate threshold can be determined according to the actual situation and is not specifically limited here.

[0037] Specifically, it can be determined whether there is a risk of fire in the battery pack by comparing the battery temperature change rate with the preset change rate threshold. For example, if the battery temperature change rate is greater than the preset change rate threshold, it can be determined that there is a risk of fire in the battery pack.

[0038] It should be noted that when the battery temperature change rate is greater than the preset change rate threshold, it indicates that the battery has an abnormal temperature rise. However, due to different battery failures, the time from the abnormal temperature rise of the battery to smoking and catching fire is not the same. For example, if the battery has an abnormal temperature rise due to internal reasons, the time from the abnormal temperature rise to smoking and catching fire will be relatively long; if the battery has a sharp temperature rise due to external reasons (such as the battery being punctured or scratched, etc.), the time from the abnormal temperature rise to smoking and catching fire will be relatively short.

[0039] Generally, when the time from the abnormal temperature rise to smoking and catching fire is relatively short, the smoke sensor will detect the smoke of the battery pack in a short time (for example, determining that the battery is smoking when the smoke information detected by the smoke sensor is greater than the preset concentration threshold). At this time, without waiting for the driver's action, a control signal is directly sent to the battery pack fixing device, and after receiving the control signal, the battery pack fixing device controls the separation of the battery pack from the vehicle.

[0040] In some embodiments, before controlling the battery pack fixing device, the method further includes: issuing a reminder instruction; if no response instruction is received within a preset time, then controlling the battery pack fixing device. Among them, the preset time can be determined according to the actual situation and is not specifically limited here.

[0041] Specifically, when the time from the abnormal temperature rise to smoking and catching fire is relatively long, the battery has not caught fire and smoked yet (for example, the smoke information is less than or equal to the preset concentration threshold). Therefore, before controlling the battery pack fixing device, the vehicle-mounted computer can send a reminder instruction to the in-vehicle terminal, control the vehicle to decelerate and the driver cannot accelerate, wait for the driver to give a response instruction, and determine whether to control the battery pack fixing device according to the driver's response instruction.

[0042] Exemplarily, if the driver gives a response instruction within a preset time (e.g., 15 s) to pull over and stop the vehicle, the driver and passengers get out of the vehicle and wait for rescue. For example, the driver can call a tow truck to tow the vehicle to a repair shop, and professional maintenance personnel can determine the reason for the abnormal battery temperature rise. If the battery has an abnormal temperature rise due to other reasons (e.g., a malfunction of the battery cooling fan), after the professional maintenance personnel handle the fault, they can click a preset button to make the vehicle return to normal use; if the battery is indeed about to catch fire and the driver and passengers have already got out of the vehicle, it will not pose a threat to the lives of the driver and passengers. If the driver does not give a response instruction within the preset time (e.g., 15 s), a control signal is directly sent to the battery pack fixing device, and after receiving the control signal, the battery pack fixing device controls the separation of the battery pack from the vehicle.

[0043] In some embodiments, the state information of the battery pack includes the battery temperature change rate, and the state information of the vehicle includes at least one of angular acceleration, rotational angular velocity, and roll angular velocity. Determining that there is a risk of the battery pack catching fire based on the state information of the battery pack and the state information of the vehicle includes: determining that there is a risk of the battery pack catching fire when at least one of the angular acceleration, rotational angular velocity, and roll angular velocity is greater than or equal to a corresponding preset threshold and the battery temperature change rate is greater than a preset change rate threshold. Among them, the preset thresholds corresponding to the angular acceleration, rotational angular velocity, and roll angular velocity can be determined according to the actual situation and are not specifically limited here.

[0044] Specifically, it is determined whether the vehicle has collided by comparing the angular acceleration, rotational angular velocity, and roll angular velocity with the corresponding preset thresholds. For example, if the lateral angular acceleration is greater than or equal to the corresponding preset threshold, it is determined that the vehicle has a side collision; if the forward angular acceleration is greater than or equal to the corresponding preset threshold, it is determined that the vehicle has a rear-end accident; if the backward angular acceleration is greater than or equal to the corresponding preset threshold, it is determined that the vehicle has hit another vehicle or object; if the rotational angular velocity is greater than or equal to the corresponding preset threshold, it is determined that the vehicle has rotated; if the roll angular velocity is greater than or equal to the corresponding preset threshold, it is determined that the vehicle has rolled.

[0045] After determining that the vehicle has collided, the vehicle's battery pack may be damaged and there is a risk of catching fire, or it may not be damaged and there is no risk of catching fire. Therefore, it is also necessary to further determine whether the battery temperature change rate is greater than the preset change rate threshold, and then determine whether there is a risk of the battery pack catching fire.

[0046] Exemplarily, if the battery temperature change rate is greater than a preset change rate threshold, it indicates that the battery pack is damaged after the vehicle collision and there is a risk of fire. Then, without the driver's operation, a control signal is directly sent to the battery pack fixing device. After receiving the control signal, the battery pack fixing device controls the separation of the battery pack from the vehicle, thereby avoiding to a certain extent the problem that the vehicle door is deformed due to the collision and the passengers cannot open the door to escape. If the battery temperature change rate is less than or equal to the preset change rate threshold, it indicates that there is no risk of fire in the battery pack after the vehicle collision. Then, there is no need to control the separation of the battery pack from the vehicle, thereby reducing losses to a certain extent.

[0047] In some embodiments, the status information of the vehicle includes smoke information. Determining that there is a risk of fire in the battery pack according to the status information of the vehicle includes: determining that there is a risk of fire in the battery pack when the smoke information is greater than a preset concentration threshold. The preset concentration threshold can be determined according to the actual situation and is not specifically limited here.

[0048] Specifically, it is also possible to determine whether there is a risk of fire in the battery pack by comparing the smoke information with the preset concentration threshold. For example, if it is detected that the smoke information is greater than the preset concentration threshold, it is determined that there is a risk of fire in the battery pack and an alarm is issued.

[0049] In some embodiments, before controlling the battery pack fixing device, the method further includes: responding to a packet loss instruction and controlling the battery pack fixing device.

[0050] Specifically, as can be seen from the above embodiments, if it is determined that there is a risk of fire in the battery pack according to the battery temperature change rate and the battery pack is detected to be smoking in a short time, the separation of the battery pack from the vehicle can be directly controlled. However, in the case where the vehicle breaks down and the battery temperature change rate cannot be detected, the separation of the battery pack from the vehicle cannot be directly controlled, nor can the vehicle computer be controlled to send a reminder instruction to the terminal device. Therefore, it is also possible to determine that there is a risk of fire in the battery pack according to the smoke information. At this time, after receiving the smoke alarm, the passengers can actively press a preset button to issue a packet loss instruction to control the separation of the battery pack from the vehicle.

[0051] In addition, if the smoke concentration detection sensor fails, the separation of the battery pack from the vehicle cannot be directly controlled either. And because the internal reaction of the battery is intense, the passengers can quickly smell the smoke, but there is no time to give a response instruction and pull over. Then, the preset button can also be pressed to issue a packet loss instruction to control the separation of the battery pack from the vehicle. In the case where the battery temperature change rate cannot be detected and the smoke concentration detection sensor fails simultaneously, if the passengers find that the battery is on fire, the preset button can also be pressed to issue a packet loss instruction to control the separation of the battery pack from the vehicle.

[0052] In this way, by setting a preset button, the driver can control the separation of the battery pack from the vehicle by himself, which can, to a certain extent, avoid the problem that the battery pack cannot be directly separated due to the failure of detection components such as vehicle sensors, and further reduce the threat of battery spontaneous combustion to the passengers.

[0053] In some embodiments, the above method further includes: when it is determined that there is a risk of fire in the battery pack, controlling the vehicle speed to be reduced to a preset vehicle speed threshold. The preset vehicle speed threshold can be 15 km / h, which can be calibrated according to the actual situation and is not specifically limited here.

[0054] Exemplarily, after it is detected that the battery temperature change rate is greater than the preset change rate threshold and it is determined that there is a risk of fire in the battery pack, it is necessary to control the vehicle speed to be reduced to the preset vehicle speed threshold (such as 15 km / h), so that the driver can quickly stop the vehicle, or it can, to a certain extent, avoid the vehicle from rolling over when the battery pack is directly discarded when the smoke sensor detects that the battery pack is smoking. After it is detected that the smoke information reaches the preset concentration threshold and it is determined that there is a risk of fire in the battery pack, it is also necessary to control the vehicle speed to be reduced to the preset vehicle speed threshold (such as 15 km / h), so as to avoid the vehicle from rolling over to a certain extent when responding to the packet loss instruction to discard the battery pack.

[0055] In addition, in the case where the smoke concentration detection sensor fails, or when both the battery temperature change rate cannot be detected and the smoke concentration detection sensor fails, when controlling the separation of the battery pack from the vehicle in response to the packet loss instruction, it is also necessary to reduce the vehicle speed to the preset vehicle speed threshold (such as 15 km / h) in advance, so as to avoid the vehicle from rolling over to a certain extent when the vehicle speed is too high during packet loss.

[0056] In some embodiments, the system further includes a backup battery, and the above method further includes: when the battery pack is separated from the vehicle, controlling the backup battery to supply power to the vehicle.

[0057] Exemplarily, if there is no obstacle in front of the vehicle, the backup battery can support the vehicle to continue moving forward a certain distance, such as 50 meters, and can also support the vehicle to open the door and brake when the battery pack is separated from the vehicle.

[0058] In summary, the control method of the present application can separate the battery pack from the vehicle when there is a risk of fire in the battery pack, reduce the threat of battery pack spontaneous combustion to the passengers, and has a small implementation difficulty and does not require too high performance requirements for the battery pack, thereby effectively controlling the cost.

[0059] Corresponding to the above embodiments, the present application also proposes a battery separation system.

[0060] In some embodiments, referring to Figure 2 , the battery separation system 200 includes: a battery pack fixing device 220 and a controller 210.

[0061] Among them, the battery pack fixing device 220 is configured to fix the battery pack, and the controller 210 is configured to detect the state information of the battery pack and the state information of the vehicle; in the case of determining that there is a risk of fire in the battery pack according to the state information of the battery pack and / or the state information of the vehicle, control the battery pack fixing device 220 to separate the battery pack from the vehicle. Among them, the controller can be integrated into the vehicle computer, and no specific limitation is made here.

[0062] Exemplarily, when the controller 210 detects that the battery temperature change rate is greater than a preset change rate threshold, control the vehicle speed to be reduced to a preset vehicle speed threshold (for example, 15 km / h). At the same time, the controller 210 sends a reminder instruction to the in-vehicle terminal. If the controller 210 does not receive a response instruction within a preset time (for example, 15 s), directly send a control signal to the battery pack fixing device 220. After receiving the control signal, the battery pack fixing device 220 controls the battery pack to separate from the vehicle.

[0063] When the controller 210 detects that the battery temperature change rate is greater than a preset change rate threshold and the smoke information is greater than a preset concentration threshold, control the vehicle speed to be reduced to a preset vehicle speed threshold (for example, 15 km / h), and then directly send a control signal to the battery pack fixing device 220. After receiving the control signal, the battery pack fixing device 220 controls the battery pack to separate from the vehicle.

[0064] When the controller 210 detects that the smoke information is greater than a preset concentration threshold, control the vehicle speed to be reduced to a preset vehicle speed threshold (for example, 15 km / h). If the controller 210 receives a packet loss instruction, send a control signal to the battery pack fixing device 220. After receiving the control signal, the battery pack fixing device 220 controls the battery pack to separate from the vehicle.

[0065] When the controller 210 detects that at least one of the angular acceleration, rotational angular velocity, and rolling angular velocity is greater than or equal to the corresponding preset threshold, and the battery temperature change rate is greater than the preset change rate threshold, directly send a control signal to the battery pack fixing device 220. After receiving the control signal, the battery pack fixing device 220 controls the battery pack to separate from the vehicle.

[0066] Continue to refer to Figure 3, the battery separation system 200 further includes a backup battery 230, which is used to supply power to the vehicle after the battery pack loses power. Exemplarily, in the case where it is determined that there is a risk of fire in the battery pack, the controller 210 can directly control the battery pack to lose power, start the backup battery 230 to supply power to the braking system, and control the vehicle to reduce to a preset vehicle speed. Further, the backup battery 230 continues to supply power to the controller to ensure that the controller can send a control signal to the relay of the backup battery 230. After the relay responds to the control signal, it controls the battery pack fixing device 220 to loosen, so that the battery pack is separated from the vehicle. After the battery pack is separated from the vehicle, the backup battery 230 can also support the vehicle to continue moving forward a certain distance, such as 50 meters, and can also support the vehicle to open the door and brake.

[0067] It should be noted that the above explanations of the embodiments and beneficial effects of the control method for the battery separation system are also applicable to the battery separation system of the embodiments of the present application. To avoid redundancy, no detailed elaboration will be made here.

[0068] Corresponding to the above embodiments, the present application also proposes a vehicle.

[0069] See Figure 4 As shown, the vehicle 400 of the present application includes a memory 410, a processor 420, and a control program for the battery separation system stored on the memory 410 and executable on the processor 420. When the processor executes the control program for the battery separation system, the foregoing control method for the battery separation system is implemented.

[0070] It should be noted that the above explanations of the embodiments and beneficial effects of the control method for the battery separation system are also applicable to the vehicle of the embodiments of the present application. To avoid redundancy, no detailed elaboration will be made here.

[0071] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definite sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch instructions from the instruction execution system, apparatus, or device and execute the instructions), or in combination with these instruction execution systems, apparatuses, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in combination with an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection portion having one or more wirings (electronic device), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or other suitable processing as necessary, and then stored in a computer memory.

[0072] It should be understood that the various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0074] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0075] In the present application, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0076] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A control method for a battery separation system, characterized in that: The system includes: a battery pack fixing device, wherein the battery pack fixing device is configured to fix the battery pack, and the method includes: Detecting status information of the battery pack and status information of the vehicle; When it is determined that the battery pack has a fire risk according to the status information of the battery pack and / or the status information of the vehicle, the battery pack fixing device is controlled to separate the battery pack from the vehicle.

2. The control method of the battery separation system according to claim 1, characterized in that: The state information of the battery pack includes a battery temperature change rate, and determining that the battery pack has a fire risk according to the state information of the battery pack includes: When the battery temperature change rate is greater than a preset change rate threshold, it is determined that the battery pack has a fire risk.

3. The control method of the battery separation system according to claim 2, characterized in that: Before controlling the battery pack fixing device, the method further includes: Issue reminder instructions; If no response instruction is received within the preset time, the battery pack fixing device is controlled.

4. The control method of the battery separation system according to claim 1, characterized in that: The state information of the battery pack includes a battery temperature change rate, the state information of the vehicle includes at least one of an angular acceleration, a rotational angular velocity, and a rolling angular velocity, and determining that the battery pack has a fire risk according to the state information of the battery pack and the state information of the vehicle includes: When at least one of the angular acceleration, the rotational angular velocity, and the rolling angular velocity is greater than or equal to a corresponding preset threshold, and the battery temperature change rate is greater than a preset change rate threshold, it is determined that the battery pack has a fire risk.

5. The control method of the battery separation system according to claim 1, characterized in that: The vehicle status information includes smoke information, and determining that the battery pack has a fire risk according to the vehicle status information includes: When the smoke information is greater than a preset concentration threshold, it is determined that the battery pack has a fire risk.

6. The control method of the battery separation system according to claim 5, characterized in that: Before controlling the battery pack fixing device, the method further includes: Respond to the packet loss instruction and control the battery pack fixing device.

7. The control method of the battery separation system according to any one of claims 1 to 6, characterized in that: The method further comprises: When it is determined that the battery pack has a fire risk, the vehicle speed is controlled to be reduced to a preset vehicle speed threshold.

8. The control method of the battery separation system according to any one of claims 1 to 6, characterized in that: The system further includes a backup battery, and the method further includes: When the battery pack is separated from the vehicle, the backup battery is controlled to supply power to the vehicle.

9. A battery separation system, characterized in that: include: A battery pack fixing device and a controller, wherein the battery pack fixing device is configured to fix the battery pack, and the controller is configured to, Detecting status information of the battery pack and status information of the vehicle; When it is determined that the battery pack has a fire risk according to the status information of the battery pack and / or the status information of the vehicle, the battery pack fixing device is controlled to separate the battery pack from the vehicle.

10. A vehicle, characterized in that: The invention comprises a memory, a processor and a control program of a battery separation system which is stored in the memory and can be run on the processor. When the processor executes the control program of the battery separation system, a control method of the battery separation system according to any one of claims 1 to 8 is implemented.

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