Air suspension system, vehicle and air suspension system control method

Abstract

The present application relates to an air suspension system, a vehicle and an air suspension system control method, which includes: a gas tank, the gas tank is used to store inert gas; an air spring, the air spring is connected to the gas tank; a fire extinguishing actuator, the output end of the fire extinguishing actuator is used to communicate with the inside of the power battery, and its input end is connected to the gas tank, the fire extinguishing actuator can be switched to connect the gas tank with the power battery or shut down; a monitoring component, the monitoring component is used to be set on the power battery, and the monitoring component is used to monitor the temperature of the power battery; a controller, the controller is connected to the fire extinguishing actuator and the monitoring component by signal. The air suspension system can be made multifunctional and the safety of the power battery can be improved. It solves the problem that in the natural condition of the power battery, the driver has no actual firefighting experience and cannot discover the fire in time, resulting in the situation being out of control.

Description

Technical Field

[0001] The present application relates to the field of air suspension systems, and in particular to an air suspension system, a vehicle, and an air suspension system control method. Background Art

[0002] Air suspension is an advanced suspension system that mainly uses compressed air to adjust the vehicle's ground clearance and shock absorption effect to improve driving comfort and stability. Its working principle is to use an air compressor to form compressed air, and based on the signal from the ground distance sensor, the on-board computer determines the change in vehicle height, and then controls the air compressor and exhaust valve to automatically compress or extend the spring.

[0003] The advantages of air suspension mainly include the following points: ‌Improved comfort‌: Air suspension can automatically adjust the height of the vehicle, reduce vibration and impact, and make the driving process smoother and more comfortable‌. ‌Enhanced safety‌: By improving the stability and handling of the vehicle, reducing the roll range, and improving driving safety‌. ‌Energy saving and emission reduction‌: Reduce air resistance, improve fuel efficiency, and can be combined with energy recovery system to improve energy utilization efficiency‌. ‌Space optimization‌: Adjust the height of the vehicle according to the needs of passengers and cargo, and provide flexible interior space‌. ‌Personalized customization‌: Allow car owners to adjust the performance and appearance of the vehicle according to their preferences and needs‌. These advantages make air suspension popular in high-end models and bring drivers an excellent driving experience.

[0004] In the relevant technology, pure electric, hybrid or extended-range vehicles are all equipped with power batteries. There are many possible reasons that may cause the power batteries to spontaneously combust, such as overcharging, discharging, short circuit, high temperature environment, mechanical damage or vehicle accidents. When facing the natural conditions of power batteries, the driver has no actual fire-fighting experience and cannot detect the fire in time, which often leads to the situation getting out of control. Summary of the invention

[0005] The present application provides an air suspension system, a vehicle and an air suspension system control method, which can realize the multi-functionality of the air suspension system and improve the safety of the power battery. It solves the problem in the related art that when facing the natural conditions of the power battery, the driver has no actual fire fighting experience and cannot discover the fire in time, which often leads to the situation getting out of control.

[0006] In a first aspect, an embodiment of the present application provides an air suspension system, comprising:

[0007] A gas storage tank, wherein the gas storage tank is used to store inert gas;

[0008] An air spring, the air spring being in communication with the air storage tank;

[0009] A fire extinguishing actuator, wherein the output end of the fire extinguishing actuator is used to communicate with the interior of the power battery, and the input end thereof is connected with the gas storage tank, and the fire extinguishing actuator can be switched to connect the gas storage tank with the power battery or to close the connection;

[0010] A monitoring component, the monitoring component is used to be arranged on the power battery, and the monitoring component is used to monitor the temperature of the power battery;

[0011] A controller is connected to the fire extinguishing execution component and the monitoring component by signal. The controller is used to control the fire extinguishing execution component to switch to the gas tank to connect with the power battery when the monitoring component monitors that the temperature of the power battery reaches a set temperature value, so that the inert gas in the gas tank is blown into the power battery.

[0012] In combination with the first aspect, in one implementation, the fire extinguishing execution component includes:

[0013] a fire extinguishing pipeline, one end of which is connected to the gas storage tank via a first solenoid valve, and the other end of which is connected to a fire extinguishing electromagnetic nozzle, which is installed in the power battery;

[0014] The monitoring component includes:

[0015] A temperature sensor, the temperature sensor being installed on the power battery;

[0016] The controller is signal-connected to the first solenoid valve, the fire extinguishing solenoid nozzle and the temperature sensor.

[0017] In combination with the first aspect, in one implementation, a second solenoid valve is installed between the air spring and the air storage tank;

[0018] The air suspension system further comprises:

[0019] A pressure sensor, wherein the pressure sensor is installed on the gas storage tank;

[0020] The controller is connected to the pressure sensor and the second solenoid valve signal. The controller is used to open the second solenoid valve to enable the air spring to supply air to the gas tank when the fire extinguishing actuator is switched to connect the gas tank to the power battery and the pressure value monitored by the pressure sensor is lower than the set pressure value.

[0021] In combination with the first aspect, in one implementation, the air spring is installed with a height sensor, and the air tank is installed with an air supply connector.

[0022] In combination with the first aspect, in one implementation, the air suspension system further includes:

[0023] An air pump, wherein the output end of the air pump is connected to the air spring, and a third solenoid valve is installed at the input end of the air pump;

[0024] A filter, wherein the output end of the filter is connected to the third solenoid valve, and the input end of the filter is used to communicate with the outside world.

[0025] In a second aspect, an embodiment of the present application provides a vehicle, comprising:

[0026] A power battery, the power battery comprising a plurality of electrically connected battery modules;

[0027] A gas storage tank, wherein the gas storage tank is used to store inert gas;

[0028] An air spring, the air spring being in communication with the air storage tank;

[0029] A fire extinguishing executive component, the number of which corresponds to the number of the plurality of battery modules, the output end of which is disposed in the corresponding battery module, and the input end of which is connected to the gas storage tank;

[0030] A monitoring component, which is used to be arranged on the power battery and is used to monitor the temperature of multiple groups of battery modules;

[0031] A controller is connected to the fire extinguishing execution component by signal. The controller is used to control the corresponding fire extinguishing execution component to switch to the gas tank to connect with the power battery when the temperature of the corresponding battery module monitored by the monitoring component reaches a set temperature value, so that the inert gas in the gas tank is blown into the power battery.

[0032] In a third aspect, an embodiment of the present application provides an air suspension system control method, the air suspension system control method comprising the following steps:

[0033] Obtain the temperature value of the power battery monitored by the monitoring component in real time, and determine whether the temperature value of the power battery reaches the set temperature value;

[0034] If so, the fire extinguishing actuator is controlled to switch to connect the gas tank to the power battery, so that the inert gas in the gas tank is blown into the power battery; wherein the gas tank is connected to an air spring.

[0035] In combination with the third aspect, in one embodiment, after the step of controlling the fire extinguishing actuator to switch the gas storage tank to communicate with the power battery so that the inert gas in the gas storage tank is blown into the power battery, the method further includes:

[0036] The pressure sensor monitors the pressure value in the gas tank in real time and determines whether the pressure value in the gas tank is lower than the set pressure value. If so, the second solenoid valve is opened to allow the air spring to supply gas to the gas tank.

[0037] In conjunction with the third aspect, in one embodiment, before the real-time acquisition monitoring component monitors the temperature value of the power battery and determines whether the temperature value of the power battery reaches a set temperature value, it also includes:

[0038] Obtain the pressure values ​​of the air spring and the air tank in real time, and determine whether the pressure values ​​of the air spring and the air tank are lower than the set pressure values;

[0039] If so, the air pump is controlled to extract air from the outside until the pressure values ​​of the air spring and the air tank return to normal, and the vehicle system is used to display the air leakage fault code of the air suspension system to remind the driver to drive the vehicle to the maintenance center in time to empty the mixed gas in the air suspension system.

[0040] In combination with the third aspect, in one implementation, if so, the air pump is controlled to extract air from the outside until the pressure values ​​of the air spring and the air tank return to normal values, and the vehicle computer system is used to display the air leakage fault code of the air suspension system to remind the driver to drive the vehicle to a maintenance center in time, and after the mixed gas in the air suspension system is emptied, the method further includes:

[0041] Obtain the purity of the inert gas in the air spring and the gas tank in real time, and determine whether the purity of the inert gas in the air spring and the gas tank is lower than the set purity value;

[0042] If so, the switching action of the subsequent fire extinguishing execution component is disabled.

[0043] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0044] The inert gas is compressed by the air spring to adjust the ground clearance and shock absorption effect of the car to improve the driving comfort and stability. The gas tank provides the required inert gas to ensure the normal use of the vehicle air suspension. When the temperature of the power battery reaches the set temperature value through the monitoring component, the controller receives its signal and controls the fire extinguishing execution component to switch to the gas tank and connect with the power battery, so that the inert gas in the gas tank can be blown into the power battery, and the inert gas is used to isolate the air to extinguish the power battery. No additional fire extinguishers are required, which can reduce the manufacturing cost of the vehicle, realize the multi-functionality of the air suspension system, and improve the safety of the power battery. It solves the problem in the related technology that when facing the natural situation of the power battery, the driver has no actual fire fighting experience and cannot discover the fire in time, which often leads to the situation out of control. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 Schematic diagram of the air suspension system.

[0047] In the figure: 1. Power battery; 2. Temperature sensor; 3. Fire extinguishing electromagnetic nozzle; 4. Air supply connector; 5. Air storage tank; 6. First solenoid valve; 7. Pressure sensor; 8. Controller; 9. Air pump; 10. Third solenoid valve; 11. Filter; 12. Height sensor; 13. Air spring; 14. Second solenoid valve; 15. One-way valve. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0049] It is important to understand that air suspension is an advanced suspension system that mainly uses compressed air to adjust the vehicle's ground clearance and shock absorption effect to improve driving comfort and stability. Its working principle is to use an air compressor to form compressed air, and based on the signal from the ground distance sensor, the on-board computer determines the change in vehicle height, and then controls the air compressor and exhaust valve to automatically compress or extend the spring.

[0050] The advantages of air suspension mainly include the following points: ‌Improved comfort‌: Air suspension can automatically adjust the height of the vehicle, reduce vibration and impact, and make the driving process smoother and more comfortable‌. ‌Enhanced safety‌: By improving the stability and handling of the vehicle, reducing the roll range, and improving driving safety‌. ‌Energy saving and emission reduction‌: Reduce air resistance, improve fuel efficiency, and can be combined with energy recovery system to improve energy utilization efficiency‌. ‌Space optimization‌: Adjust the height of the vehicle according to the needs of passengers and cargo, and provide flexible interior space‌. ‌Personalized customization‌: Allow car owners to adjust the performance and appearance of the vehicle according to their preferences and needs‌. These advantages make air suspension popular in high-end models and bring drivers an excellent driving experience.

[0051] Among them, pure electric, hybrid or extended-range vehicles are all equipped with power batteries. There are many possible reasons that may cause the power batteries to spontaneously combust, such as overcharging, discharging, short circuit, high temperature environment, mechanical damage or vehicle accidents. When facing the natural conditions of power batteries, the driver has no actual fire-fighting experience and cannot detect the fire in time, which often leads to the situation getting out of control.

[0052] The embodiment of the present application provides an air suspension system, a vehicle and an air suspension system control method, which can realize the multi-functionality of the air suspension system and improve the safety of the power battery. It solves the problem in the related art that when facing the natural conditions of the power battery, the driver has no actual fire fighting experience and cannot discover the fire in time, which often leads to the situation getting out of control.

[0053] First, as Figure 1 As shown, an embodiment of the present application provides an air suspension system, which includes:

[0054] A gas tank 5, the gas tank 5 is used to store inert gas; an air spring 13, the air spring 13 is connected to the gas tank 5; a fire extinguishing execution component, the output end of the fire extinguishing execution component is used to communicate with the inside of the power battery 1, and its input end is connected to the gas tank 5, and the fire extinguishing execution component can be switched to connect the gas tank 5 with the power battery 1 or turned off; a monitoring component, the monitoring component is used to be set on the power battery 1, and the monitoring component is used to monitor the temperature of the power battery 1; a controller 8, the controller 8 is connected to the fire extinguishing execution component and the monitoring component by signal, and the controller 8 is used to control the fire extinguishing execution component to switch to connect the gas tank 5 with the power battery 1 when the monitoring component monitors that the temperature of the power battery 1 reaches a set temperature value, so that the inert gas in the gas tank 5 is blown into the power battery 1.

[0055] Exemplarily, the gas tank 5 is filled with inert gas and connected to the air spring 13. There are four air springs 13, which are respectively installed at the two ends of the front and rear axles. The amount of inert gas entering the air spring 13 from the gas tank 5 is controlled to achieve vehicle posture control, such as vehicle height adjustment. The input end of the fire extinguishing actuator is connected to the gas tank 5, and its output end can be set in the power battery 1. The fire extinguishing actuator switches to the connection with the gas tank 5, so that the inert gas flows into the power battery 1, isolating the power battery 1 from the outside air, and plays a role in extinguishing the fire.

[0056] Specifically, the ground clearance and shock absorption effect of the vehicle are adjusted by compressing the inert gas through the air spring 13 to improve the driving comfort and stability. The gas tank 5 provides the required inert gas to ensure the normal use of the vehicle air suspension. When the temperature of the power battery 1 reaches the set temperature value through the monitoring component, the controller 8 receives its signal and controls the fire extinguishing execution component to switch to the gas tank 5 to connect with the power battery 1, so that the inert gas in the gas tank 5 can be blown into the power battery 1, and the inert gas is used to isolate the air to extinguish the power battery 1. No additional fire extinguisher is required, which can reduce the vehicle manufacturing cost, realize the multi-functionality of the air suspension system, and improve the safety of the power battery 1. It solves the problem in the related technology that when facing the natural situation of the power battery, the driver has no actual fire fighting experience and cannot find the fire in time, which often leads to the situation out of control.

[0057] In combination with the first aspect, in one embodiment, Figure 1 As shown, the fire extinguishing execution component includes:

[0058] A fire extinguishing pipeline, one end of which is connected to the gas storage tank 5 via a first solenoid valve 6, and the other end of which is connected to a fire extinguishing electromagnetic nozzle 3, which is installed in the power battery 1; the monitoring component includes: a temperature sensor 2, which is used to be installed in the power battery 1; the controller 8 is signal-connected to the first solenoid valve 6, the fire extinguishing electromagnetic nozzle 3 and the temperature sensor 2.

[0059] Exemplarily, the monitoring component includes a temperature sensor 2, which is used to monitor the temperature value of the power battery 1. When the temperature sensor 2 detects that the temperature value of the power battery 1 reaches the ignition point temperature value, the controller 8 receives the temperature sensor 2 signal, and responds by controlling the first solenoid valve 6 and the fire extinguishing solenoid nozzle 3 to open. At this time, the inert gas in the gas tank 5 is depressurized and sprayed into the power battery 1 through the first solenoid valve 6, the fire extinguishing pipeline and the solenoid nozzle, so that the power battery 1 is fully filled with inert gas and isolated from the outside air, thereby preventing the power battery 1 from supporting combustion and achieving the purpose of extinguishing the fire.

[0060] In combination with the first aspect, in one embodiment, Figure 1 As shown, a second solenoid valve 14 is installed between the air spring 13 and the gas tank 5; the air suspension system also includes: a pressure sensor 7, which is installed on the gas tank 5; the controller 8 is signal-connected to the pressure sensor 7 and the second solenoid valve 14, and the controller 8 is used to open the second solenoid valve 14 when the fire extinguishing actuator is switched to the gas tank 5 being connected to the power battery 1, and the pressure value monitored by the pressure sensor 7 is lower than the set pressure value, so that the air spring 13 supplies air to the gas tank 5.

[0061] Exemplarily, one end of the second solenoid valve 14 can be connected to the air spring 13 via the first air pipeline, and the other end thereof can be connected to the output end of the first solenoid valve 6 via the second air pipeline, one end of the fire extinguishing pipeline is connected to the second air pipeline and is located between the first solenoid valve 6 and the second solenoid valve 14, the other end of the fire extinguishing pipeline is connected to the fire extinguishing electromagnetic nozzle 3, and the pressure sensor can be installed inside the gas tank 5 or in the second air pipeline between the gas tank 5 and the air spring 13. Among them, the second solenoid valve 14 realizes the connection between the air spring 13 and the air tank 5, thereby realizing the inflation or deflation of the air spring 13, realizing the height and posture control of the vehicle body, and using the pressure sensor 7 to monitor the internal pressure value of the air tank 5 at all times. When the controller 8 detects that the power battery 1 has a fire, it controls the fire extinguishing execution component to switch to the connected state, and supplies gas to the power battery 1 to extinguish the fire of the power battery 1. When the pressure value monitored by the pressure sensor 7 is lower than the set pressure value, it means that the inert gas in the air tank 5 has been almost consumed and cannot continue to provide inert gas to ensure the extinguishing of the fire. At this time, the controller 8 will control the second solenoid valve 14 to open. At this time, the air tank 5 is connected with the air spring 13. At this time, the inert gas in the air spring 13 will flow into the fire extinguishing execution component to achieve the purpose of continuing to extinguish the fire of the power battery 1.

[0062] In combination with the first aspect, in one embodiment, Figure 1 As shown, the air spring 13 is installed with a height sensor 12 , and the air storage tank 5 is installed with an air supply connector 4 .

[0063] For example, the volume of the air spring 13 at this height can be determined in combination with the height sensor 12. Based on the volume and air pressure, the volume of the air at normal pressure in the air suspension system is calculated. By comparing the commonly used full gas value, it can be determined whether there is a leak in the system. If there is a leak, the user is reminded to perform maintenance in time, and inert gas can be added to the gas tank 5 through the gas replenishment connector 4. It can be determined whether the rated gas volume has been filled according to the prompt of the vehicle ECU.

[0064] In combination with the first aspect, in one embodiment, Figure 1 As shown, the air suspension system also includes: an air pump 9, the output end of the air pump 9 is connected to the air spring 13, and the input end of the air pump 9 is installed with a third solenoid valve 10; a filter 11, the output end of the filter 11 is connected to the third solenoid valve 10, and the input end of the filter 11 is used to communicate with the outside world.

[0065] For example, if the vehicle has air leakage in the wild, causing the air suspension to be too low, affecting the vehicle's driving, the third solenoid valve 10 and the filter 11 are used to directly replenish air from the atmosphere as a temporary emergency. After the controller 8 determines that the air is taken from the air, the gas in the air suspension system cannot be used to extinguish the fire. Later, the vehicle can go to the vehicle maintenance center to empty the mixed gas in the gas tank 5 and the air spring 13 and replace it with pure inert gas.

[0066] In combination with the first aspect, in one embodiment, Figure 1 As shown, the air suspension system also includes: a one-way valve 15, which is installed on the power battery 1 to control the connection between the air in the power battery 1 and the outside world. When the inert gas is continuously inflated into the power battery 1 until the air in the power battery 1 is exhausted through the one-way valve 15, the outside air is prevented from entering.

[0067] Second, as Figure 1 As shown, an embodiment of the present application provides a vehicle, which includes: a power battery 1, wherein the power battery 1 includes a plurality of electrically connected battery modules; a gas tank 5, wherein the gas tank 5 is used to store inert gas; an air spring 13, wherein the air spring 13 is connected to the gas tank 5; a fire extinguishing actuator component, wherein the number of the fire extinguishing actuator components corresponds to the number of the plurality of battery modules, the output end of the fire extinguishing actuator component is arranged in the corresponding battery module, and the input end of the fire extinguishing actuator component is connected to the gas tank 5; a monitoring component, wherein the monitoring component is used to be arranged in the power battery 1, and the monitoring component is used to monitor the temperature of the plurality of battery modules; a controller 8, wherein the controller 8 is connected to the fire extinguishing actuator component by signal, and the controller 8 is used to control the corresponding fire extinguishing actuator component to switch to the gas tank 5 to be connected to the power battery 1 when the temperature of the corresponding battery module monitored by the monitoring component reaches a set temperature value, so that the inert gas in the gas tank 5 is blown into the power battery 1.

[0068] Exemplarily, the gas tank 5 is filled with inert gas and connected to the air spring 13. There are four air springs 13, which are respectively installed at the two ends of the front and rear axles. The amount of inert gas entering the air spring 13 from the gas tank 5 is controlled to achieve vehicle posture control, such as vehicle height adjustment. The input end of the fire extinguishing actuator is connected to the gas tank 5, and its output end can be set in the power battery 1. The fire extinguishing actuator switches to the connection with the gas tank 5, so that the inert gas flows into the power battery 1, isolating the power battery 1 from the outside air, and playing a role in extinguishing the fire.

[0069] Specifically, the ground clearance and shock absorption effect of the vehicle are adjusted by compressing the inert gas through the air spring 13 to improve the driving comfort and stability. The gas tank 5 provides the required inert gas to ensure the normal use of the vehicle air suspension. When the temperature of the corresponding battery module reaches the set temperature value through the monitoring component, the controller 8 receives its signal and controls the corresponding fire extinguishing execution component to communicate with the gas tank 5, so that the inert gas in the gas tank 5 can be blown into the power battery 1, and the inert gas is used to isolate the air to extinguish the power battery 1. No additional fire extinguisher is required, which can reduce the vehicle manufacturing cost, realize the multi-functionality of the air suspension system, and improve the safety of the power battery 1. It solves the problem in the related technology that when facing the natural situation of the power battery, the driver has no actual fire fighting experience and cannot discover the fire in time, which often leads to the situation out of control.

[0070] In conjunction with the second aspect, in one implementation, Figure 1 As shown, the fire extinguishing execution component includes:

[0071] A fire extinguishing pipeline, one end of which is connected to the gas storage tank 5 via a first solenoid valve 6, and the other end of which is connected to a fire extinguishing electromagnetic nozzle 3, which is installed in the power battery 1; the monitoring component includes: a temperature sensor 2, which is used to be installed in the power battery 1; the controller 8 is signal-connected to the first solenoid valve 6, the fire extinguishing electromagnetic nozzle 3 and the temperature sensor 2.

[0072] Exemplarily, the monitoring component includes a temperature sensor 2, which is used to monitor the temperature value of the power battery 1. When the temperature sensor 2 detects that the temperature value of the power battery 1 reaches the ignition point temperature value, the controller 8 receives the temperature sensor 2 signal, and responds by controlling the first solenoid valve 6 and the fire extinguishing solenoid nozzle 3 to open. At this time, the inert gas in the gas tank 5 is depressurized and sprayed into the power battery 1 through the first solenoid valve 6, the fire extinguishing pipeline and the solenoid nozzle, so that the power battery 1 is fully filled with inert gas and isolated from the outside air, thereby preventing the power battery 1 from supporting combustion and achieving the purpose of extinguishing the fire.

[0073] In conjunction with the second aspect, in one implementation, Figure 1 As shown, a second solenoid valve 14 is installed between the air spring 13 and the gas tank 5; the air suspension system also includes: a pressure sensor 7, which is installed on the gas tank 5; the controller 8 is signal-connected to the pressure sensor 7 and the second solenoid valve 14, and the controller 8 is used to open the second solenoid valve 14 when the fire extinguishing actuator is switched to the gas tank 5 being connected to the power battery 1, and the pressure value monitored by the pressure sensor 7 is lower than the set pressure value, so that the air spring 13 supplies air to the gas tank 5.

[0074] Exemplarily, one end of the second solenoid valve 14 can be connected to the air spring 13 via the first air pipeline, and the other end thereof can be connected to the output end of the first solenoid valve 6 via the second air pipeline, one end of the fire extinguishing pipeline is connected to the second air pipeline and is located between the first solenoid valve 6 and the second solenoid valve 14, the other end of the fire extinguishing pipeline is connected to the fire extinguishing electromagnetic nozzle 3, and the pressure sensor can be installed inside the gas tank 5 or in the second air pipeline between the gas tank 5 and the air spring 13. Among them, the second solenoid valve 14 realizes the connection between the air spring 13 and the air tank 5, thereby realizing the inflation or deflation of the air spring 13, realizing the height and posture control of the vehicle body, and using the pressure sensor 7 to monitor the internal pressure value of the air tank 5 at all times. When the controller 8 detects that the power battery 1 has a fire, it controls the fire extinguishing execution component to switch to the connected state, and supplies gas to the power battery 1 to extinguish the fire of the power battery 1. When the pressure value monitored by the pressure sensor 7 is lower than the set pressure value, it means that the inert gas in the air tank 5 has been almost consumed and cannot continue to provide inert gas to ensure the extinguishing of the fire. At this time, the controller 8 will control the second solenoid valve 14 to open. At this time, the air tank 5 is connected with the air spring 13. At this time, the inert gas in the air spring 13 will flow into the fire extinguishing execution component to achieve the purpose of continuing to extinguish the fire of the power battery 1.

[0075] In conjunction with the second aspect, in one implementation, Figure 1 As shown, the air spring 13 is installed with a height sensor 12 , and the air storage tank 5 is installed with an air supply connector 4 .

[0076] For example, the volume of the air spring 13 at this height can be determined in combination with the height sensor 12. Based on the volume and air pressure, the volume of the air at normal pressure in the air suspension system is calculated. By comparing the commonly used full gas value, it can be determined whether there is a leak in the system. If there is a leak, the user is reminded to perform maintenance in time, and inert gas can be added to the gas tank 5 through the gas replenishment connector 4. It can be determined whether the rated gas volume has been filled according to the prompt of the vehicle ECU.

[0077] In conjunction with the second aspect, in one implementation, Figure 1 As shown, the air suspension system also includes: an air pump 9, the output end of the air pump 9 is connected to the air spring 13, and the input end of the air pump 9 is installed with a third solenoid valve 10; a filter 11, the output end of the filter 11 is connected to the third solenoid valve 10, and the input end of the filter 11 is used to communicate with the outside world.

[0078] For example, if the vehicle has air leakage in the wild, causing the air suspension to be too low, affecting the vehicle's driving, the third solenoid valve 10 and the filter 11 are used to directly replenish air from the atmosphere as a temporary emergency. After the controller 8 determines that the air is taken from the air, the gas in the air suspension system cannot be used to extinguish the fire. Later, the vehicle can go to the vehicle maintenance center to empty the mixed gas in the gas tank 5 and the air spring 13 and replace it with pure inert gas.

[0079] In conjunction with the second aspect, in one implementation, Figure 1 As shown, the air suspension system also includes: a one-way valve 15, which is installed on the power battery 1 to control the connection between the air in the power battery 1 and the outside world. When the inert gas is continuously inflated into the power battery 1 until the air in the power battery 1 is exhausted through the one-way valve 15, the outside air is prevented from entering.

[0080] In a third aspect, an embodiment of the present application provides an air suspension system control method, the air suspension system control method comprising the following steps:

[0081] S200: Acquire the temperature value of the power battery 1 monitored by the monitoring component in real time, and determine whether the temperature value of the power battery 1 reaches a set temperature value;

[0082] S300: If yes, the fire extinguishing actuator is controlled to switch to connect the gas tank 5 to the power battery 1 so that the inert gas in the gas tank 5 is blown into the power battery 1; wherein the gas tank 5 is connected to an air spring 13 .

[0083] In this example, the temperature value of the power battery 1 is obtained in real time, and it is determined whether the temperature value of the power battery 1 reaches the set temperature value; if so, the fire extinguishing execution component is controlled to switch to the gas tank 5 to connect with the power battery 1, so that the inert gas in the gas tank 5 is blown into the power battery 1. The inert gas in the gas tank 5 can be blown into the power battery 1, and the inert gas is used to isolate the air to extinguish the fire of the power battery 1. No additional fire extinguisher is required, which can reduce the manufacturing cost of the vehicle, realize the multi-functionality of the air suspension system, and improve the safety of the power battery 1. It solves the problem in the related technology that when facing the natural situation of the power battery, the driver has no actual fire fighting experience and cannot discover the fire in time, which often leads to the situation out of control.

[0084] In conjunction with the third aspect, in one implementation, after S300, the method further includes the following steps:

[0085] S400: The pressure sensor 7 monitors the pressure value in the gas tank 5 in real time, and determines whether the pressure value in the gas tank 5 is lower than the set pressure value. If so, the second solenoid valve 14 is opened to allow the air spring 13 to supply gas to the gas tank 5.

[0086] In this embodiment, when the controller 8 detects that the power battery 1 has a fire, it controls the fire extinguishing execution component to be in a connected state, supplies gas to the power battery 1, and extinguishes the fire of the power battery 1. When the pressure value monitored by the pressure sensor 7 is lower than the set pressure value, it means that the inert gas in the gas tank 5 has been almost consumed and cannot continue to provide inert gas to ensure the extinguishing of the fire. At this time, the controller 8 will control the second solenoid valve 14 to open. At this time, the gas tank 5 is connected to the air spring 13, and the fire extinguishing execution component is in a connected state. At this time, the inert gas in the air spring 13 will flow into the fire extinguishing execution component to achieve the purpose of continuing to extinguish the fire of the power battery 1.

[0087] In conjunction with the third aspect, in one implementation, before S200, the method further includes the following steps:

[0088] S000: Obtain the pressure values ​​of the air spring 13 and the air tank 5 in real time, and determine whether the pressure values ​​of the air spring 13 and the air tank 5 reach the set pressure values;

[0089] S100: If yes, the air pump 9 is controlled to extract air from the outside until the pressure values ​​of the air spring 13 and the air tank 5 return to normal values, and the vehicle computer system is used to display the air leakage fault code of the air suspension system to remind the driver to drive the vehicle to the maintenance center in time to empty the mixed gas in the air suspension system.

[0090] In this example, if the vehicle has air leakage in the wild, causing the air suspension to be too low, affecting the vehicle's driving, the third solenoid valve 10 and the filter 11 are used to directly replenish air from the atmosphere as a temporary emergency measure.

[0091] In conjunction with the third aspect, in one implementation, after S100, the following steps are further included:

[0092] S100-1: obtaining the purity of the inert gas in the air spring 13 and the gas storage tank 5 in real time, and determining whether the purity of the inert gas in the air spring 13 and the gas storage tank 5 is lower than a set purity value;

[0093] S100-2: If yes, disable the switching action of the subsequent fire extinguishing execution component.

[0094] In this embodiment, after the controller 8 determines that the gas is taken from the air, the gas in the air suspension system cannot be used to extinguish the fire, and the subsequent fire extinguishing execution action of the fire extinguishing execution component is disabled. Later, the vehicle can go to the vehicle maintenance center to empty the mixed gas in the gas tank 5 and the air spring 13 and replace it with pure inert gas.

[0095] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0096] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0097] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A method for controlling an air suspension system, characterized in that: It includes the following steps: A gas storage tank (5), wherein the gas storage tank (5) is used to store inert gas; An air spring (13), the air spring (13) being in communication with the air storage tank (5); a fire extinguishing actuator component, wherein the output end of the fire extinguishing actuator component is used to communicate with the interior of the power battery (1), and the input end thereof is connected to the gas storage tank (5), and the fire extinguishing actuator component can be switched to connect the gas storage tank (5) to the power battery (1) or to switch off; A monitoring component, the monitoring component being arranged on the power battery (1), and the monitoring component being used to monitor the temperature of the power battery (1); a controller (8), the controller (8) being connected to the fire extinguishing actuator component and the monitoring component by signal, the controller (8) being used to control the fire extinguishing actuator component to switch to the gas storage tank (5) to communicate with the power battery (1) when the monitoring component monitors that the temperature of the power battery (1) reaches a set temperature value, so that the inert gas in the gas storage tank (5) is blown into the power battery (1); Acquiring the pressure values ​​of the air spring (13) and the air storage tank (5) in real time, and determining whether the pressure values ​​of the air spring (13) and the air storage tank (5) are lower than a set pressure value; If so, the air pump (9) is controlled to draw air from the outside until the pressure values ​​of the air spring (13) and the air storage tank (5) return to normal values, and the vehicle computer system displays the air suspension system leakage fault code to remind the driver to drive the vehicle to a maintenance center in time to empty the mixed gas in the air suspension system; If so, the air pump (9) is controlled to extract air from the outside until the pressure values ​​of the air spring (13) and the air storage tank (5) return to normal values, and the vehicle computer system is used to display the air suspension system leakage fault code to remind the driver to drive the vehicle to a maintenance center in time. After the mixed gas in the air suspension system is emptied, the method further includes: Acquiring the purity of the inert gas in the air spring (13) and the air storage tank (5) in real time, and determining whether the purity of the inert gas in the air spring (13) and the air storage tank (5) is lower than a set purity value; If so, disable the subsequent switching action of the fire extinguishing actuator; Acquiring in real time the temperature value of the power battery (1) monitored by the monitoring component, and determining whether the temperature value of the power battery (1) reaches a set temperature value; If so, the fire extinguishing actuator is controlled to switch to the gas tank (5) and connect to the power battery (1), so that the inert gas in the gas tank (5) is blown into the power battery (1); wherein the gas tank (5) is connected to an air spring (13); If so, the fire extinguishing actuator is controlled to switch to the gas storage tank (5) to communicate with the power battery (1), so that the inert gas in the gas storage tank (5) is blown into the power battery (1), and further comprises: The pressure sensor (7) is used to monitor the pressure value in the gas storage tank (5) in real time, and it is determined whether the pressure value in the gas storage tank (5) is lower than the set pressure value. If so, the second solenoid valve (14) is opened to allow the air spring (13) to supply gas to the gas storage tank (5).

2. The air suspension system control method according to claim 1, characterized in that: The fire extinguishing actuator comprises: a fire extinguishing pipeline, one end of the fire extinguishing pipeline being connected to the gas storage tank (5) via a first solenoid valve (6), and the other end of the fire extinguishing pipeline being connected to a fire extinguishing solenoid nozzle (3), the fire extinguishing solenoid nozzle (3) being installed in the power battery (1); The monitoring component includes: A temperature sensor (2), the temperature sensor (2) being used to be installed on the power battery (1); The controller (8) is signal-connected to the first solenoid valve (6), the fire extinguishing solenoid nozzle (3) and the temperature sensor (2).

3. The air suspension system control method according to claim 1, characterized in that: A second solenoid valve (14) is installed between the air spring (13) and the air storage tank (5); The air suspension system further comprises: A pressure sensor (7), the pressure sensor (7) being mounted on the gas storage tank (5); The controller (8) is connected to the pressure sensor (7) and the second solenoid valve (14) by signals. The controller (8) is used to open the second solenoid valve (14) when the fire extinguishing actuator is switched to connect the gas storage tank (5) to the power battery (1), and the pressure value monitored by the pressure sensor (7) is lower than a set pressure value, so that the air spring (13) supplies gas to the gas storage tank (5).

4. The air suspension system control method according to claim 1, characterized in that: The air spring (13) is installed with a height sensor (12), and the air storage tank (5) is installed with an air supply connector (4).

5. The air suspension system control method according to claim 1, characterized in that: The air suspension system further comprises: An air pump (9), wherein an output end of the air pump (9) is in communication with the air spring (13), and a third solenoid valve (10) is installed at an input end of the air pump (9); A filter (11), wherein an output end of the filter (11) is in communication with the third solenoid valve (10), and an input end of the filter (11) is in communication with the outside.

Images