Air suspension system and control method

Abstract

The present invention discloses an air suspension system and a control method, wherein the system includes an air charging quick-connect connector, an air charging check valve, a high-pressure gas storage tank, an air compressor, an air spring, a dry powder fire extinguisher tank, a power battery pack, and a valve group air charging fire extinguishing unit; the gas enters the air compressor output through the air charging quick-connect connector, the air charging check valve, and the high-pressure gas storage tank in sequence, enters the air spring one way, and enters the dry powder fire extinguisher tank one way; the valve group air charging fire extinguishing unit includes a controller, an air pump motor, a pressure sensor, an air spring solenoid valve, a gas storage tank solenoid valve, a temperature sensor, and a nozzle solenoid valve connected to a fire extinguishing nozzle, and the fire extinguishing nozzle is connected to the dry powder fire extinguisher tank through a fire extinguisher powder outlet pipe. The present application uses the gas intake pressure in the air suspension as the pumping power for the dry powder in the dry powder fire extinguisher tank. When the gas is implemented as an inert gas, it can also be combined with a dry powder fire extinguisher to assist in the high-temperature self-identification fire extinguishing of the power battery or the engine compartment, thereby improving its safety.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile power battery fire extinguishing, and in particular to an air suspension system and a control method thereof. Background Art

[0002] As people's demand for vehicle driving comfort continues to increase, more and more vehicles on the market are using air suspension systems, but the air suspension system has no more uses except adjusting the air springs.

[0003] However, due to the fact that the power battery is wrapped or covered by the wrapping material, the power battery is short-circuited or other factors cause the internal temperature to be high, which may cause a fire. When the fire first starts, the fire is small and not easy to be noticed by the driver and passengers. By the time the driver and passengers find it, the fire has become quite large, making it difficult for the driver and passengers to escape or put out the fire. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned background technology and to provide an air suspension system and a control method.

[0005] In a first aspect, the present application provides an air suspension system, comprising:

[0006] Inflatable quick-connect connector, inflatable check valve, high-pressure gas storage tank, air compressor, air spring, dry powder fire extinguisher tank, power battery pack, fire sprinkler and valve group inflatable fire extinguishing unit;

[0007] The gas enters the air compressor output in sequence through the inflation quick plug connector, the inflation check valve, and the high-pressure gas storage tank, enters the air spring one way, and enters the dry powder fire extinguisher tank one way. The fire extinguishing nozzle is connected to the dry powder fire extinguisher tank through the fire extinguisher tank powder outlet pipe;

[0008] The valve group inflation fire extinguishing unit includes a controller, an air pump motor connected to the driving end of the air compressor, a pressure sensor connected to the compressed gas outlet of the air compressor, an air spring solenoid valve electrically connected to the air spring, an air storage tank solenoid valve electrically connected to the pressure sensor and the dry powder fire extinguisher pipe, a temperature sensor provided in the power battery pack, and a nozzle solenoid valve connected to a fire extinguishing nozzle, and the fire extinguishing nozzle is connected to the dry powder fire extinguisher tank through the fire extinguisher powder outlet pipe;

[0009] The air pump motor, the pressure sensor, the air spring solenoid valve, the air tank solenoid valve, the temperature sensor and the nozzle solenoid valve are all connected to the controller signal.

[0010] According to the first aspect, in a first possible implementation of the first aspect, one end of the gas tank solenoid valve is connected to the pressure sensor through a gas pipeline, and the other end is connected to the high-pressure gas tank through a fire extinguisher air inlet pipe.

[0011] According to a first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect,

[0012] The air outlet end of the fire extinguisher air inlet pipe is located above the powder surface of the dry powder fire extinguisher tank, and the powder inlet end of the fire extinguisher powder outlet pipe extends into the bottom of the dry powder fire extinguisher tank.

[0013] According to the first aspect, in a third possible implementation manner of the first aspect,

[0014] The controller includes an air suspension ECU and a power battery control ECU, which are signal-connected. The air pump motor, the pressure sensor, the air spring solenoid valve, the air tank solenoid valve and the nozzle solenoid valve are all signal-connected to the air suspension ECU, and the temperature sensor is signal-connected to the power battery control ECU.

[0015] In a second aspect, the present application provides a control method applied to the air suspension system as described above, comprising the following steps:

[0016] Step S11, obtaining the real-time air pressure of the air spring;

[0017] Step S12, comparing the real-time air pressure of the air spring with the air pressure threshold of the air spring;

[0018] Step S13: When the real-time air pressure of the air spring reaches the air pressure threshold of the air spring, the air spring solenoid valve is controlled to close;

[0019] Step S31, obtaining the real-time temperature of the power battery;

[0020] Step S32, comparing the real-time temperature of the power battery with the power battery temperature threshold, when the real-time temperature of the power battery reaches the power battery temperature threshold, controlling the air intake of the dry powder fire extinguisher tank and the solenoid valve of the nozzle to open for fire extinguishing.

[0021] According to the second aspect, in a first possible implementation manner of the second aspect, before step S31, the following steps are further included:

[0022] Step S21, controlling the gas storage solenoid valve to close, controlling the external gas source to continue to inflate the high-pressure gas storage tank, and obtaining the real-time gas pressure of the high-pressure gas storage tank;

[0023] Step S22, comparing the real-time air pressure of the high-pressure gas storage tank with the air pressure threshold of the high-pressure gas storage tank, when the real-time air pressure of the high-pressure gas storage tank reaches the air pressure threshold of the high-pressure gas storage tank, controlling to disconnect the external gas source.

[0024] According to the second aspect, in a second possible implementation manner of the first aspect, step S32 specifically includes the following steps:

[0025] Step S321, comparing the real-time temperature of the power battery with the power battery temperature threshold, when the real-time temperature of the power battery reaches the power battery temperature threshold, comparing the real-time air pressure of the high-pressure gas storage tank with the real-time air pressure of the controller spring to obtain the air pressure comparison working condition;

[0026] Step S322: According to the air pressure comparison working condition, different air intake strategies are executed to control the air intake of the dry powder fire extinguisher tank and the opening of the nozzle solenoid valve to extinguish the fire.

[0027] According to the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, step S322 specifically includes the following steps:

[0028] Step S3221, when the real-time air pressure of the high-pressure gas storage tank is greater than the real-time air pressure of the air spring, the solenoid valve of the gas storage tank is controlled to open to allow air to enter the dry powder fire extinguisher tank, and the solenoid valve of the nozzle is controlled to open to extinguish the fire;

[0029] Step S3222: When the real-time air pressure of the high-pressure gas storage tank is greater than the real-time air pressure of the air spring, the air spring solenoid valve and the gas storage tank solenoid valve are controlled to open to allow air to enter the dry powder fire extinguisher tank, and the nozzle solenoid valve is controlled to open to extinguish the fire.

[0030] According to the second possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, in step S32, the intake gas is an inert gas.

[0031] Compared with the prior art, the advantages of the present invention are as follows:

[0032] The air suspension system provided in the present application uses the gas in the air suspension as a pumping power for the dry powder in the dry powder fire extinguisher tank in addition to supplying air springs. When the gas is realized as an inert gas, it can also be combined with the dry powder fire extinguisher to assist the high-temperature self-identification fire extinguishing of the power battery, thereby realizing the multifunctionality of the gas in the air suspension and improving the safety of the power battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of an air suspension system according to an embodiment of the present invention;

[0034] Figure 2 is a method flow chart of a control method according to an embodiment of the present invention;

[0035] Figure 3 is another method flow chart of the control method according to an embodiment of the present invention;

[0036] Figure 4 is another method flow chart of the control method of an embodiment of the present invention.

[0037] In the figure, 1. Inflatable quick-connect connector; 2. Inflatable one-way valve; 3. High-pressure gas tank; 4. Air compressor; 5. Pressure sensor; 6. Gas pipeline; 7. Fire extinguisher air inlet pipe; 8. Dry powder fire extinguisher tank; 9. Fire extinguisher tank powder outlet pipe; 10. Power battery pack; 11. Nozzle solenoid valve; 12. Fire extinguishing nozzle; 13. Temperature sensor; 14. Power battery control ECU; 15. Gas tank solenoid valve; 16. Connection circuit; 17. Air spring; 18. Air spring solenoid valve; 19. Air suspension ECU; 20. Air pump motor. DETAILED DESCRIPTION

[0038] Reference will now be made in detail to specific embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Although the present invention will be described in conjunction with specific embodiments, it will be understood that it is not intended to limit the present invention to the embodiments described. On the contrary, it is intended to cover changes, modifications and equivalents included in the spirit and scope of the present invention as defined by the appended claims. It should be noted that the method steps described herein can all be implemented by any functional block or functional arrangement, and any functional block or functional arrangement can be implemented as a physical entity or a logical entity, or a combination of the two.

[0039] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] Note: The example to be introduced below is only a specific example, and is not intended to limit the embodiments of the present invention to the following specific steps, values, conditions, data, sequences, etc. Those skilled in the art can apply the concept of the present invention to construct more embodiments not mentioned in this specification by reading this specification.

[0041] Existing vehicles are generally equipped with air suspension systems for comfort, but the existing air spring suspension system has no other purpose except adjusting the air spring 17. Existing vehicle power batteries are wrapped or covered with wrappings. When a short circuit occurs or the running time is too long, the internal temperature is high, which is easy to cause a fire and is not easy to be discovered by the passengers, posing a great safety hazard.

[0042] In view of this, please refer to Figure 1The present application provides an air suspension system, which uses the gas in the air suspension system to assist the power battery in extinguishing the fire and achieve the technical effect of self-identification and automatic fire extinguishing. The air suspension system includes an air charging quick-connect connector 1, an air charging check valve 2, a high-pressure gas storage tank 3, an air compressor 4, an air spring 17, a dry powder fire extinguisher tank 8, a power battery pack 10, a fire extinguishing nozzle 12 and a valve group air charging fire extinguishing unit; the gas enters the air compressor 4 through the air charging quick-connect connector 1, the air charging check valve 2, and the high-pressure gas storage tank 3 in turn, enters the air spring 17 one way, and enters the dry powder fire extinguisher tank 8 one way. The dry powder fire extinguisher tank 8 is connected to the fire extinguishing nozzle 12 through the fire extinguisher tank powder outlet pipe 9; the valve group air charging fire extinguishing unit includes a controller , an air pump motor 20 connected to the driving end of the air compressor 4, a pressure sensor 5 connected to the compressed gas outlet of the air compressor 4, an air spring solenoid valve 18 electrically connected to the air spring 17, an air tank solenoid valve 15 electrically connected to the pressure sensor 5 and the dry powder fire extinguisher pipe, a temperature sensor 13 arranged in the power battery pack 10, and a nozzle solenoid valve 11 connected to the fire extinguishing nozzle 12, and the fire extinguishing nozzle 12 is connected to the dry powder fire extinguisher tank 8 through the fire extinguisher powder outlet pipe; the air pump motor 20, the pressure sensor 5, the air spring solenoid valve 18, the air tank solenoid valve 15, the temperature sensor 13 and the nozzle solenoid valve 11 are all connected to the controller signal.

[0043] The air suspension system provided by the present application realizes the multifunctionality of the gas in the air suspension by using the gas in the air suspension as the pumping power for the dry powder in the dry powder fire extinguisher tank 8 in addition to supplying the air spring 17, thereby improving the safety of the power battery; the self-identification effect of the fire condition in the power battery is achieved through the temperature sensor 13, thereby avoiding the occurrence of fire safety hazards that are difficult to be discovered when the power battery covered by the wrapping material catches fire; by replacing the power battery pack with the engine compartment, the air suspension system provided by the present application can also be used for high-temperature self-identification fire extinguishing in the engine compartment, with high adaptability and a wide range of applications.

[0044] As described above, according to the present application, the gas connected to the inflation quick-connect connector 1 is non-oxygen and non-air, so as to avoid the introduction of oxygen into the power battery while pumping the dry powder in the dry powder fire extinguisher tank 8, thereby affecting the fire extinguishing effect. That is, the improvement basis of the present application is to replace the existing air suspension inflation gas with non-oxygen, preferably inert gas, and the high-pressure inert gas source with the height adjustment function can be used. The air suspension in the present application is defined based on the prior art. The air suspension in the present application preferably has an inflation gas that does not contain oxygen. To be more precise, the air suspension in the present application is an oxygen-free gas suspension. Of course, for the sake of cost control, the air suspension system of the present application can also be implemented as an inflation gas source using air as the air spring 17, and an oxygen-free gas as the dry powder pumping power gas source in the dry powder fire extinguisher tank 8.

[0045] In one embodiment, the air suspension system provided by the present application includes a plurality of air springs 17 , and the air compressor 4 inflates the plurality of air springs 17 respectively.

[0046] In one embodiment, there are multiple temperature sensors 13 to achieve real-time detection of the temperature at various angles in the power battery pack 10, thereby achieving a comprehensive detection effect and protection effect.

[0047] In one embodiment, the gas introduced into the inflation quick-connect connector 1 is an inert gas, which serves as a dry powder pumping power for the dry powder fire extinguisher tank 8. In addition, the inert gas and the dry powder have a common fire extinguishing effect on the power battery.

[0048] In one embodiment, one end of the gas tank solenoid valve 15 is connected to the pressure sensor 5 through the gas pipeline 6, and the other end is connected to the high-pressure gas tank 3 through the fire extinguisher air inlet pipe 7.

[0049] In one embodiment, the air outlet end of the fire extinguisher air inlet pipe 7 is located above the powder surface of the dry powder fire extinguisher tank 8, and the powder inlet end of the fire extinguisher powder outlet pipe extends into the bottom of the dry powder fire extinguisher tank 8, and the gas pressure pumps the dry powder in the dry powder fire extinguisher tank 8 into the power battery.

[0050] In one embodiment, for the sake of simplicity of design, there is no need to add a new control unit. The controller is implemented as an air suspension ECU19 in an existing air suspension and a power battery control ECU14 in an existing power battery pack 10. The air suspension ECU19 and the power battery control ECU14 are signal-connected, the air pump motor 20, the pressure sensor 5, the air spring solenoid valve 18, the air tank solenoid valve 15 and the nozzle solenoid valve 11 are all signal-connected to the air suspension ECU19, and the temperature sensor 13 is signal-connected to the power battery control ECU14.

[0051] As mentioned above, the signal connection may also be described as a communication connection, connected via the connection circuit 16 .

[0052] Based on the same invention concept, please refer to Figure 2 The present application provides a control method applied to the air suspension system as described above, comprising the following steps:

[0053] Step S11, obtaining the real-time air pressure of the air spring;

[0054] Step S12, comparing the real-time air pressure of the air spring with the air pressure threshold of the air spring;

[0055] Step S13: When the real-time air pressure of the air spring reaches the air pressure threshold of the air spring, the air spring solenoid valve is controlled to close, and further inflating the air spring is stopped;

[0056] Step S31, after the spring is inflated, the real-time temperature of the power battery is obtained to achieve real-time detection of the temperature inside the power battery;

[0057] Step S32, comparing the real-time temperature of the power battery with the power battery temperature threshold. When the real-time temperature of the power battery reaches the power battery temperature threshold, controlling the gas in the air suspension to flow into the dry powder fire extinguisher tank and opening the nozzle solenoid valve to extinguish the fire.

[0058] In one embodiment, please refer to Figure 3 Before step S31, the following steps are also included:

[0059] Step S21, controlling the gas storage solenoid valve to close, controlling the external gas source to continue to inflate the high-pressure gas storage tank, and obtaining the real-time gas pressure of the high-pressure gas storage tank, and obtaining the gas storage working condition in the high-pressure gas storage tank;

[0060] Step S22, comparing the real-time air pressure of the high-pressure gas storage tank with the air pressure threshold of the high-pressure gas storage tank. When the real-time air pressure of the high-pressure gas storage tank reaches the air pressure threshold of the high-pressure gas storage tank, it is determined that the high-pressure gas storage tank has completed gas storage, and the charging quick plug connector is controlled to disconnect the external gas source and continue to intake gas.

[0061] In one embodiment, please refer to Figure 4 The step S32 specifically comprises the following steps:

[0062] Step S321, comparing the real-time temperature of the power battery with the power battery temperature threshold, when the real-time temperature of the power battery reaches the power battery temperature threshold, comparing the real-time air pressure of the high-pressure gas storage tank with the real-time air pressure of the controller spring to obtain the air pressure comparison working condition;

[0063] Step S322: According to the air pressure comparison working condition, different air intake strategies are executed to control the air intake of the dry powder fire extinguisher tank and the opening of the nozzle solenoid valve to extinguish the fire.

[0064] In one embodiment, the step S321 further includes the following steps:

[0065] Step S3211, comparing the real-time temperature of the power battery with the power battery temperature threshold, and when the real-time temperature of the power battery reaches the power battery temperature threshold, comparing the air pressure of the air suspension with the dry powder fire extinguisher tank driving air pressure threshold;

[0066] Step S3212: When the real-time air pressure of the air suspension is greater than the dry powder fire extinguisher tank driving pressure threshold, execute step S322; when the real-time air pressure of the air suspension is less than the dry powder fire extinguisher tank driving pressure threshold, do not execute step S322, do not execute the fire extinguishing procedure, and send an insufficient air pressure warning signal to facilitate the driver and passengers to obtain the warning information in time and inspect and troubleshoot the power battery, air source and air suspension.

[0067] In one embodiment, the step S322 specifically includes the following steps:

[0068] Step S3221, when the real-time air pressure of the high-pressure gas storage tank is greater than the real-time air pressure of the air spring, the solenoid valve of the gas storage tank is controlled to open to allow air to enter the dry powder fire extinguisher tank, and the solenoid valve of the nozzle is controlled to open to extinguish the fire;

[0069] Step S3222: When the real-time air pressure of the high-pressure gas storage tank is greater than the real-time air pressure of the air spring, the air spring solenoid valve and the gas storage tank solenoid valve are controlled to open to allow air to enter the dry powder fire extinguisher tank, and the nozzle solenoid valve is controlled to open to extinguish the fire.

[0070] In one embodiment, in step S32, the intake gas is an inert gas.

[0071] In a more specific embodiment, the working principle of the external air source to inflate the air suspension is:

[0072] 1.1 The external air source inflates the 4 air springs 17 through the air suspension inflation quick plug connector 1 and the inflation check valve 2.

[0073] 1.2 The air suspension ECU 19 controls the four air spring solenoid valves 18 to open and the air tank solenoid valve 15 to close

[0074] 1.3 When the four air springs 17 reach the specified air pressure A, the four air spring solenoid valves 18 are closed and the air springs 17 are no longer inflated.

[0075] 1.4 The gas tank solenoid valve 15 is opened, and the external gas source continues to inflate the high-pressure gas tank 3 until the specified inflation pressure threshold is reached.

[0076] 1.5 Disconnect the external gas source

[0077] In a more specific embodiment, the working principle of using the gas in the air suspension system to extinguish the fire is:

[0078] A. When the air pressure in the high-pressure air tank is greater than the air spring pressure

[0079] 2.1 air spring solenoid valve 18 is in closed state when the 4 air springs 17 are not inflated or deflated.

[0080] 2.2 Multiple temperature sensors 13 are arranged inside the battery pack. When the temperature sensor 13 detects that the temperature of a certain area of ​​the power battery is too high, it transmits a signal to the power battery control ECU 14 through the circuit.

[0081] 2.3 The power battery control ECU 14 transmits the fire extinguishing signal to the air suspension ECU 19 through the circuit

[0082] 2.4 The air suspension ECU 19 opens the air tank solenoid valve 15 and the nozzle solenoid valve 11 through the circuit;

[0083] 2.5 The high-pressure gas storage tank 3 is filled with high-pressure inert gas through the gas pipeline 6 and the fire extinguisher air inlet pipe 7 to the top of the dry powder fire extinguisher tank 8;

[0084] 2.6 The top of the dry powder fire extinguisher tank 8 is subjected to high pressure, and the fire extinguishing dry powder and inert gas in the gas tank are sprayed out through the fire extinguisher tank powder outlet pipe 9 at the bottom of the fire extinguishing gas tank;

[0085] 2.7 The dry powder and inert gas mixture sprayed out from the powder outlet pipe 9 of the fire extinguisher tank passes through the opened spray head solenoid valve 11;

[0086] 2.8 The mixture of dry powder and inert gas is sprayed out from the fire extinguishing nozzle 12 to achieve the purpose of extinguishing the fire by exhausting the oxygen in the battery pack with the inert gas and covering the fire source with the dry powder.

[0087] B. When the air pressure in the high-pressure gas tank is consistent with the air pressure in the air spring

[0088] 3.1 Open the air spring solenoid valve 18 to connect the air circuit of the air spring 17 with the air circuit of the high-pressure gas storage tank 3;

[0089] 3.2 The air spring 17 and the high-pressure gas in the high-pressure gas storage tank 3 jointly output the gas to the fire extinguisher air inlet pipe 7;

[0090] 3.3 Continue with steps 2.6 to 2.8 in step A.

[0091] 3.4 When the air pressure in the entire air suspension is insufficient to cause the dry powder fire extinguisher tank 8 to continue spraying dry powder, the fire extinguishing procedure is terminated.

[0092] C. The maintenance process of the air suspension system and dry powder fire extinguishing device is as follows:

[0093] 4.1 Air suspension re-inflation

[0094] For the inflation process, see the section on the principle of inflating air suspension with external air source.

[0095] 4.2 Refilling of dry powder fire extinguisher tanks

[0096] Remove the gas pipeline from the dry powder fire extinguisher tank, then remove the dry powder fire extinguisher tank 8 from the vehicle and refill it.

[0097] Based on the same inventive concept, an embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, all or part of the method steps of the above method are implemented.

[0098] The present invention implements all or part of the process in the above method, and can also be completed by instructing related hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of each method embodiment can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, USB flash drive, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAcce Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electric carrier signal and telecommunication signal.

[0099] Based on the same inventive concept, an embodiment of the present application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program running on the processor, and when the processor executes the computer program, all or part of the method steps in the above method are implemented.

[0100] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of a computer device, and uses various interfaces and lines to connect various parts of the entire computer device.

[0101] The memory can be used to store computer programs and / or modules. The processor realizes various functions of the computer device by running or executing the computer programs and / or modules stored in the memory, and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application required for a function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the mobile phone (such as audio data, video data, etc.). In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (FlashCard), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0102] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, servers or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program codes.

[0103] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), servers, and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as a combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0104] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0105] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0106] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An air suspension system, characterized in that: include: Inflatable quick-connect connector, inflatable check valve, high-pressure gas storage tank, air compressor, air spring, dry powder fire extinguisher tank, power battery pack, fire sprinkler and valve group inflatable fire extinguishing unit; The gas enters the air compressor output in sequence through the inflation quick plug connector, the inflation check valve, and the high-pressure gas storage tank, enters the air spring one way, and enters the dry powder fire extinguisher tank one way. The fire extinguishing nozzle is connected to the dry powder fire extinguisher tank through the fire extinguisher tank powder outlet pipe; The valve group inflation fire extinguishing unit includes a controller, an air pump motor connected to the driving end of the air compressor, a pressure sensor connected to the compressed gas outlet of the air compressor, an air spring solenoid valve electrically connected to the air spring, an air storage tank solenoid valve electrically connected to the pressure sensor and the dry powder fire extinguisher pipe, a temperature sensor provided in the power battery pack, and a nozzle solenoid valve connected to a fire extinguishing nozzle, and the fire extinguishing nozzle is connected to the dry powder fire extinguisher tank through the fire extinguisher powder outlet pipe; The air pump motor, the pressure sensor, the air spring solenoid valve, the air tank solenoid valve, the temperature sensor and the nozzle solenoid valve are all connected to the controller signal.

2. The air suspension system according to claim 1, characterized in that: One end of the gas tank solenoid valve is connected to the pressure sensor through a gas pipeline, and the other end is connected to the high-pressure gas tank through a fire extinguisher air inlet pipe.

3. The air suspension system according to claim 2, characterized in that: The air outlet end of the fire extinguisher air inlet pipe is located above the powder surface of the dry powder fire extinguisher tank, and the powder inlet end of the fire extinguisher powder outlet pipe extends into the bottom of the dry powder fire extinguisher tank.

4. The air suspension system according to claim 1, characterized in that: The controller includes an air suspension ECU and a power battery control ECU, which are signal-connected. The air pump motor, the pressure sensor, the air spring solenoid valve, the air tank solenoid valve and the nozzle solenoid valve are all signal-connected to the air suspension ECU, and the temperature sensor is signal-connected to the power battery control ECU.

5. A control method, characterized in that: The method uses the air suspension system according to any one of claims 1 to 4, and the method comprises the following steps: Step S11, obtaining the real-time air pressure of the air spring; Step S12, comparing the real-time air pressure of the air spring with the air pressure threshold of the air spring; Step S13: When the real-time air pressure of the air spring reaches the air pressure threshold of the air spring, the air spring solenoid valve is controlled to close; Step S31, obtaining the real-time temperature of the power battery; Step S32, comparing the real-time temperature of the power battery with the power battery temperature threshold, when the real-time temperature of the power battery reaches the power battery temperature threshold, controlling the air intake of the dry powder fire extinguisher tank and the solenoid valve of the nozzle to open for fire extinguishing.

6. The control method according to claim 5, characterized in that: Before step S31, the following steps are also included: Step S21, controlling the gas storage solenoid valve to close, controlling the external gas source to continue to inflate the high-pressure gas storage tank, and obtaining the real-time gas pressure of the high-pressure gas storage tank; Step S22, comparing the real-time air pressure of the high-pressure gas storage tank with the air pressure threshold of the high-pressure gas storage tank, when the real-time air pressure of the high-pressure gas storage tank reaches the air pressure threshold of the high-pressure gas storage tank, controlling to disconnect the external gas source.

7. The control method according to claim 5, characterized in that: The step S32 specifically includes the following steps: Step S321, comparing the real-time temperature of the power battery with the power battery temperature threshold, when the real-time temperature of the power battery reaches the power battery temperature threshold, comparing the real-time air pressure of the high-pressure gas storage tank with the real-time air pressure of the controller spring to obtain the air pressure comparison working condition; Step S322: According to the air pressure comparison working condition, different air intake strategies are executed to control the air intake of the dry powder fire extinguisher tank and the opening of the nozzle solenoid valve to extinguish the fire.

8. The control method according to claim 7, characterized in that: The step S322 specifically includes the following steps: Step S3221, when the real-time air pressure of the high-pressure gas storage tank is greater than the real-time air pressure of the air spring, the solenoid valve of the gas storage tank is controlled to open to allow air to enter the dry powder fire extinguisher tank, and the solenoid valve of the nozzle is controlled to open to extinguish the fire.

9. The control method according to claim 8, characterized in that: The step S322 specifically further includes the following steps: Step S3222: When the real-time air pressure of the high-pressure gas storage tank is greater than the real-time air pressure of the air spring, the air spring solenoid valve and the gas storage tank solenoid valve are controlled to open to allow air to enter the dry powder fire extinguisher tank, and the nozzle solenoid valve is controlled to open to extinguish the fire.

10. The control method according to claim 5, characterized in that: In the step S32, the intake gas is an inert gas.

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