Low-temperature air supply system and method for air suspension

Abstract

The invention relates to the technical field of automobile control, in particular to a low-temperature air supply system and method for an air suspension. Comprising a pipeline module, a temperature acquisition module and a control module, and the pipeline module comprises a first pipeline and a second pipeline; one end of the first pipeline is communicated with an air conditioner air outlet, and the other end is communicated with an inlet end of an air compressor for supplying air to the air spring; the other end of the second pipeline is communicated with the inlet end of the air compressor; the temperature acquisition module is used for acquiring air temperature in the air spring, external environment temperature and air temperature of an air outlet of the air conditioner; the control module controls the first pipeline or the second pipeline to communicate with the air compressor based on the air spring internal air temperature, the external environment temperature and the air conditioner air outlet air temperature. According to the air spring cooling device, low-temperature gas can be provided for the air spring to cool the air spring, so that the air spring is always in a good temperature environment.

Description

Technical Field

[0001] The invention relates to the technical field of automobile control, and in particular to a low-temperature air supply system and method for air suspension. Background Art

[0002] At present, air suspension is widely used in vehicles due to its advantages such as better smoothness and handling stability, as well as the ability to adjust the hardness of shock absorption and the height of the vehicle body.

[0003] In the related art, the air suspension system includes an air spring and a height sensor, etc., wherein the air spring is arranged between the vehicle body and the spring tray on the suspension, and has the functions of buffering and vibration reduction; there are two height sensors, and the two height sensors can be arranged on the frame and the spring tray respectively, or, respectively, on the frame and the upper swing arm or respectively on the frame and the lower swing arm. The height sensor is used to detect the height signal of the vehicle and transmit the height signal to the Electronic Control Unit (ECU), and the ECU can adjust the posture of the vehicle body according to the read height signal. The ECU adjusts the posture of the vehicle body according to the read height signal and the vehicle state, and when the posture of the vehicle body is adjusted, the ECU can start the air supply and distribution module to realize the gas delivery between the air tank and the air spring. Among them, the air supply and distribution module can be an air compressor, etc.

[0004] During the driving process of the vehicle, the temperature of the air in the air spring chamber increases due to the frequent compression. When the temperature is too high, it will affect the performance of the air spring and reduce the comfort of the vehicle during driving. In order to solve this technical problem, a Chinese invention patent application entitled "An air supply device and its working mode" with patent number "CN117885486A" proposed an air supply device for air suspension. The device mentioned that the air supply device includes an air pump, and the air drying chamber is used to dry the gas compressed by the air pump. A motor for driving the air pump is provided on the outside of the air supply device. The air pump is independently arranged and connected to the reversing valve device or the air drying chamber directly or through a cooling device. This solution reduces the temperature entering the drying chamber by adding a cooling device, thereby achieving the effect of improving the drying capacity of the air drying chamber and the service life of the air supply device. This solution can reduce the temperature of the gas entering the air spring to a certain extent, thereby improving the use effect of the air spring. However, because a cooling device needs to be added to the entire pipeline, the cost of the entire air suspension will increase, which is not conducive to large-scale promotion and application. In addition, the added cooling device is mainly used to facilitate the drying of the gas, and the cooling effect on the gas entering the air spring is poor. Summary of the invention

[0005] The purpose of the present invention is to solve the deficiencies of the above-mentioned background technology and to provide a low-temperature air supply system and method for air suspension.

[0006] The technical solution of the present invention is: a low-temperature air supply system for air suspension, comprising:

[0007] A pipeline module, the pipeline module comprising a first pipeline and a second pipeline; one end of the first pipeline is connected to the air outlet of the air conditioner, and the other end is connected to the inlet end of the air compressor supplying air to the air spring; one end of the second pipeline is connected to the external atmosphere, and the other end is connected to the inlet end of the air compressor;

[0008] A temperature acquisition module, which is used to collect the internal gas temperature of the air spring, the external environment temperature and the gas temperature at the air outlet of the air conditioner;

[0009] A control module controls the first pipeline or the second pipeline to be connected to the air compressor based on the internal gas temperature of the air spring, the external ambient temperature and the air temperature of the air-conditioning outlet, so as to adjust the internal gas temperature of the air spring.

[0010] According to a low-temperature air supply system for an air suspension provided in the present application, the temperature acquisition module comprises:

[0011] A first temperature sensor, which is disposed inside the air spring and is used to collect the gas temperature inside the air spring;

[0012] A second temperature sensor, which is disposed at the inlet end of the second pipeline and is used to collect the temperature of the external ambient gas;

[0013] The third temperature sensor is arranged at the air outlet of the air conditioner and is used to collect the gas temperature at the air outlet of the air conditioner.

[0014] According to a low-temperature air supply system for an air suspension provided in the present application, the pipeline module comprises:

[0015] A connecting pipe, one end of which is connected to the inlet end of the air compressor, and the other end of which is connected to the outlet ends of the first pipeline and the second pipeline through a three-way valve; the three-way valve is connected to the control module signal.

[0016] According to a low-temperature air supply system for an air suspension provided in the present application, the control module includes:

[0017] The first judgment module is used to compare the internal gas temperature of the air spring with the first set temperature, and to judge whether low-temperature gas needs to be provided to the inside of the air spring when the internal gas temperature of the air spring is not less than the first set temperature, and to judge whether low-temperature gas does not need to be provided to the inside of the air spring when the internal gas temperature of the air spring is less than the first set temperature.

[0018] According to a low-temperature air supply system for an air suspension provided in the present application, the control module includes:

[0019] The second judgment module is used to compare the air-conditioning outlet temperature with the external ambient gas temperature when it is necessary to provide low-temperature gas to the inside of the air spring, and to make a judgment to connect the first pipeline and cut off the second pipeline when the air-conditioning outlet temperature is lower than the external ambient gas temperature, and to make a judgment to cut off the first pipeline and connect the second pipeline when the air-conditioning outlet temperature is not lower than the external ambient gas temperature.

[0020] According to a low-temperature air supply system for an air suspension provided in the present application, the control module includes:

[0021] A third judgment module is used to compare the internal gas temperature of the air spring with a second set temperature after the compressor supplies low-temperature gas to the air spring for a set time, and to make a judgment to stop supplying low-temperature gas to the inside of the air spring when the internal gas temperature of the air spring is not greater than the second set temperature, and to make a judgment to continue supplying low-temperature gas to the inside of the air spring when the internal gas temperature of the air spring is greater than the second set temperature.

[0022] The present application also provides a method for supplying low-temperature air for an air suspension, the method being operated by utilizing the above-mentioned low-temperature air supply system for an air suspension, comprising:

[0023] Collect the gas temperature inside the air spring, and determine whether the gas inside the air spring needs to be cooled based on the gas temperature inside the air spring;

[0024] When the internal gas of the air spring needs to be cooled, the air outlet temperature of the air conditioner and the external ambient gas temperature are collected, and the on-off of the first pipeline and the second pipeline are controlled based on the air outlet temperature of the air conditioner and the external ambient gas temperature.

[0025] According to a low-temperature air supply method for an air suspension provided in the present application, the method for judging whether it is necessary to cool the gas inside the air spring based on the internal gas temperature of the air spring comprises: comparing the internal gas temperature of the air spring with a first set temperature; if the internal gas temperature of the air spring is not less than the first set temperature, judging that it is necessary to supply low-temperature gas to the inside of the air spring; if the internal gas temperature of the air spring is less than the first set temperature, judging that it is not necessary to supply low-temperature gas to the inside of the air spring.

[0026] According to a low-temperature air supply method for an air suspension provided in the present application, the method for controlling the on-off of a first pipeline and a second pipeline based on the air-conditioning outlet temperature and the external ambient gas temperature includes: when it is necessary to provide low-temperature gas to the inside of an air spring, the air-conditioning outlet temperature is compared with the external ambient gas temperature; if the air-conditioning outlet temperature is lower than the external ambient gas temperature, the first pipeline is connected and the second pipeline is disconnected so that the low-temperature gas at the air-conditioning outlet enters the air spring through the air compressor; if the air-conditioning outlet temperature is not lower than the external ambient gas temperature, the second pipeline is connected and the first pipeline is disconnected so that the low-temperature gas from the external environment enters the air spring through the air compressor.

[0027] According to a low-temperature air supply method for an air suspension provided in the present application, after the compressor supplies low-temperature gas to the air spring for a set time, the internal gas temperature of the air spring is compared with a second set temperature. If the internal gas temperature of the air spring is not greater than the second set temperature, the supply of low-temperature gas to the inside of the air spring is stopped; if the internal gas temperature of the air spring is greater than the second set temperature, the supply of low-temperature gas to the inside of the air spring continues.

[0028] The advantages of the present application are as follows: 1. The low-temperature air supply method for an air suspension provided by the present application introduces two pipeline structures, which are respectively connected to the air outlet of the air conditioner and the external atmospheric environment. When the air spring needs to cool the internal gas, low-temperature gas can be supplied to the air spring, so that the gas inside the air spring can be quickly cooled. The cooling effect is excellent, and the air spring can always be maintained in a good use condition, thereby extending the service life of the air spring. In addition, the present application only adds two pipeline structures, the improvement is very small, the cost is extremely low, and it will not occupy too much space, and there is no need to configure special cooling equipment. The entire operation control method is also extremely simple, and the cost of use is low, which is suitable for large-scale promotion and application.

[0029] 2. The present application adds a first temperature sensor inside the air spring, which can directly obtain the temperature of the gas inside the air spring. The obtained temperature more intuitively reflects the internal temperature of the air spring, and the subsequent adjustment and control of the air spring is more accurate; a temperature sensor is set at the inlet end of the second pipeline and the air outlet of the air conditioner, which can directly obtain the external environment gas temperature and the air outlet temperature of the air conditioner, and can screen out the gas temperature with a lower temperature, so as to facilitate the rapid cooling and adjustment of the gas inside the air spring;

[0030] 3. The present application can greatly reduce the complexity of the entire pipeline structure by setting a connecting pipe between the air compressor and the first pipeline and the second pipeline, and using the three-way valve on the connecting pipe to control the on-off of the first pipeline and the second pipeline, which is convenient for the arrangement of the control circuit, occupies less space, and further reduces the cost of manufacture and use;

[0031] 4. The present application determines whether it is necessary to provide low-temperature gas to the air spring by comparing the internal gas temperature of the air spring with the first set temperature. This judgment module can be integrated into the control system to automatically and intelligently control the air spring, and can accurately determine whether it is necessary to provide low-temperature gas to the air spring, thereby improving the use effect and service life of the air spring;

[0032] 5. The second judgment module constructed in the present application is used to compare the external environment gas temperature and the air outlet temperature of the air conditioner, and its purpose is to screen out the best gas temperature. If the air outlet temperature of the air conditioner is low, the air outlet of the air conditioner is directly used to supply low-temperature gas to the air spring. If the external environment gas temperature is low, the external environment gas is directly used to supply low-temperature gas to the air spring. The effect of reducing the internal gas temperature of the air spring is better and the reduction efficiency is higher;

[0033] 6. The present application sets a third judgment module, which is used to determine whether it is necessary to continue to supply low-temperature gas to the air spring by collecting the internal gas temperature of the air spring after providing low-temperature gas to the air spring for a period of time, and disconnect the supply of low-temperature gas when it is not necessary to continue to supply low-temperature gas, so as to avoid unnecessary loss caused by continuous supply of gas to the air spring;

[0034] 7. The present application also provides a low-temperature air supply method for air suspension. The low-temperature air supply method of the present application is extremely simple, easy to operate and use, and can be fully automated and intelligent. The present application supplies low-temperature gas to the air spring through the low-temperature gas of the external environment gas and the air outlet of the air conditioner. The method can quickly reduce the gas temperature inside the air spring, so that the air spring is always in good use conditions, and improves the use effect and service life of the air spring; and the method does not need to construct a cooling device on the vehicle, the modification of the vehicle is minimal, the cost and use cost are extremely low, and it is suitable for large-scale promotion and application;

[0035] 8. The method of the present application for determining whether low-temperature gas needs to be supplied to the air spring is very simple. It only requires comparing the temperature of the gas inside the air spring with the first set temperature. The control operation method is completely determined based on the use status of the air spring, and the gas supply to the air spring is adjusted very quickly.

[0036] 9. The present application compares the temperature of the external environment gas and the air outlet gas of the air conditioner to determine which gas has a lower temperature. In this way, the gas with a lower temperature can be selected as the low-temperature gas to be supplied to the air spring, and the air spring is cooled, which has a higher cooling efficiency and a faster cooling speed.

[0037] 10. After supplying low-temperature gas to the air spring for a period of time, the present application needs to perform periodic judgment. If the internal gas temperature of the air spring reaches the standard, there is no need to continue to supply low-temperature gas to the air spring, so as to avoid unnecessary losses. The method for judging whether to continue to supply low-temperature gas to the air spring is very simple and easy to operate.

[0038] The low-temperature air supply system for the air suspension of the present application has a simple structure and is easy to operate. It can provide low-temperature gas to the air spring to cool it down, so that the air spring is always in a good temperature environment, improving the use effect and extending the service life. The entire system has minimal changes to the vehicle, and the cost of manufacture and use is extremely low. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 : A schematic diagram of the structure of a low-temperature air supply system for an air suspension of the present application;

[0040] Figure 2 : Flow chart of the low-temperature air supply method for air suspension of the present application;

[0041] Among them: 1—air spring; 2—air compressor; 3—first pipeline; 4—second pipeline; 5—connecting pipe; 6—three-way valve; 7—first temperature sensor; 8—second temperature sensor; 9—third temperature sensor. DETAILED DESCRIPTION

[0042] The embodiments of the present invention are described in detail below, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like 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 invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] The present application relates to a low-temperature air supply system for air suspension. The supply system of the present application is used to supply low-temperature gas to the air spring when the temperature of the gas inside the air spring of the air suspension rises and exceeds its optimal temperature use range, so that the temperature of the gas inside the air spring drops rapidly, and the air spring is within a suitable use temperature range, thereby improving the use effect of the air spring and extending the service life of the air spring. At the same time, the supply system of the present application is provided with two pipelines, which are connected to the external environment gas and the air outlet of the air conditioner respectively, and can select suitable low-temperature gas to be discharged into the air spring to cool the gas inside the air spring. This operation method will not make large-scale changes to the vehicle, the scale of the change is very small, and the cost of construction and use is extremely low, which is suitable for large-scale promotion and application.

[0047] like Figures 1-2As shown, a low-temperature air supply system for air suspension of the present application includes a pipeline module, a temperature acquisition module and a control module; the pipeline module includes a first pipeline 3 and a second pipeline 4; one end of the first pipeline 3 is connected to the air outlet of the air conditioner, and the other end is connected to the inlet end of the air compressor 2 that supplies air to the air spring 1; one end of the second pipeline 4 is connected to the external atmosphere, and the other end is connected to the inlet end of the air compressor 2. In actual application, the inlet end of the first pipeline 3 is not limited to the air outlet of the air conditioner, as long as it is the exhaust port of the vehicle air conditioning system to the passenger compartment, as long as low-temperature gas can be provided to the air compressor 2 through the vehicle air conditioner; the inlet end of the second pipeline 4 needs to be installed in the vehicle body away from the engine, power battery or exhaust pipe and other places where the temperature is too high to avoid the gas introduced being affected by the above-mentioned heating components.

[0048] The temperature acquisition module is used to collect the internal gas temperature of the air spring 1, the external environment temperature and the gas temperature at the air outlet of the air conditioner.

[0049] The control module controls the first pipeline 3 or the second pipeline 4 to be connected to the air compressor 2 based on the internal gas temperature of the air spring 1, the external environment temperature and the air temperature of the air conditioning outlet, so as to adjust the internal gas temperature of the air spring 1.

[0050] In practical application, the supply method of the low-temperature air supply system for air suspension of the present application includes the following steps:

[0051] S1, collecting the gas temperature inside the air spring 1, and judging whether it is necessary to cool the gas inside the air spring 1 based on the gas temperature inside the air spring 1;

[0052] The purpose of collecting the gas temperature inside the air spring 1 is to determine whether it is necessary to supply low-temperature gas to the air spring 1. If necessary, the subsequent steps are performed. If not, there is no need to perform the subsequent steps. The determination of whether it is necessary to supply low-temperature gas to the air spring 1 is the basis of the supply method of the present application.

[0053] S2. When the internal gas of the air spring 1 needs to be cooled, the air outlet temperature of the air conditioner and the external ambient gas temperature are collected, and the on-off of the first pipeline 3 and the second pipeline 4 are controlled based on the air outlet temperature of the air conditioner and the external ambient gas temperature;

[0054] The present application supplies low-temperature gas to the air spring 1 based on the air conditioning outlet and the external environment gas. In actual application, if the vehicle is traveling in an area with a lower temperature, the air conditioner may be in a heating state. If the gas from the air conditioning outlet is directly introduced into the air spring 1, the purpose of lowering the internal gas temperature of the air spring 1 may not be achieved. At this time, the temperature of the external environment gas may be lower, and it is obviously more reasonable to use the temperature of the external environment gas to cool the air spring 1; if the vehicle is traveling in an area with a higher temperature, the temperature of the external environment gas is higher. Directly using the external environment gas to supply air to the air spring 1 may not achieve a good effect, or the internal gas temperature of the air spring 1 drops very slowly, affecting its use. At this time, the air conditioner may be in a cooling mode, and the low-temperature gas from the air conditioning outlet can be introduced into the air compressor 2 to supply it to the air spring 1. This method has a better cooling effect on the gas in the air spring 1 and a higher cooling efficiency.

[0055] In some embodiments of the present application, the present embodiment optimizes the above-mentioned temperature acquisition module. Specifically, the temperature acquisition module includes a first temperature sensor 7, a second temperature sensor 8 and a third temperature sensor 9. The first temperature sensor 7 is arranged inside the air spring 1 to collect the gas temperature inside the air spring 1. The first temperature sensor 7 is inside the air spring 1 and directly collects the temperature of the gas inside the air spring 1. The obtained temperature value intuitively reflects the current gas temperature inside the air spring 1; the second temperature sensor 8 is arranged at the inlet end of the second pipeline 4 to collect the external environment gas temperature. The second temperature sensor 8 is directly arranged at the inlet end of the second pipeline 4, or at a position near the inlet end of the second pipeline 4, so that the temperature of the gas entering the second pipeline 4 can be directly obtained; the third temperature sensor 9 is arranged at the air outlet of the air conditioner to collect the gas temperature of the air outlet of the air conditioner. The third temperature sensor 9 directly obtains the temperature of the air outlet of the air conditioner, which is convenient for subsequent comparison operations.

[0056] In other embodiments of the present application, the present embodiment optimizes the above-mentioned pipeline module, specifically, Figure 1 As shown, the pipeline module includes a connecting pipe 5, one end of which is connected to the inlet end of the air compressor 2, and the other end is connected to the outlet ends of the first pipeline 3 and the second pipeline 4 through a three-way valve 6; the three-way valve 6 is connected to the control module signal.

[0057] By providing the connecting pipe 5, the connection with the air compressor 2 is facilitated, and the three-way valve 6 is provided to facilitate the arrangement of the control circuit. The entire pipeline structure layout occupies less space, the design is more reasonable, and the control is more convenient.

[0058] In a further embodiment of the present application, this embodiment optimizes the above-mentioned control module. Specifically, the control module includes a first judgment module, a second judgment module and a third judgment module; the first judgment module is used to compare the internal gas temperature of the air spring 1 with the first set temperature, and make a judgment that low-temperature gas needs to be provided to the inside of the air spring 1 when the internal gas temperature of the air spring 1 is not less than the first set temperature, and make a judgment that low-temperature gas does not need to be provided to the inside of the air spring 1 when the internal gas temperature of the air spring 1 is less than the first set temperature.

[0059] The first judgment module is used to judge whether it is necessary to provide low-temperature gas to the air spring 1;

[0060] The second judgment module is used to compare the air-conditioning outlet temperature with the external ambient gas temperature when it is necessary to provide low-temperature gas to the inside of the air spring 1, and to make a judgment to connect the first pipeline 3 and cut off the second pipeline 4 when the air-conditioning outlet temperature is lower than the external ambient gas temperature, and to cut off the first pipeline 3 and connect the second pipeline 4 when the air-conditioning outlet temperature is not lower than the external ambient gas temperature.

[0061] The second judgment module judges whether the air spring 1 needs to be provided with low-temperature gas from the external environment or low-temperature gas from the air outlet of the air conditioner;

[0062] The third judgment module is used to compare the gas temperature inside the air spring 1 with the second set temperature after the compressor supplies low-temperature gas to the air spring 1 for a set time, and to make a judgment to stop supplying low-temperature gas to the inside of the air spring 1 when the gas temperature inside the air spring 1 is not greater than the second set temperature, and to make a judgment to continue supplying low-temperature gas to the inside of the air spring 1 when the gas temperature inside the air spring 1 is greater than the second set temperature;

[0063] The third judgment module is used to judge whether it is necessary to continue or stop supplying low-temperature gas to the air spring 1 .

[0064] The judgment instructions for the low-temperature gas supply of this embodiment can be obtained through the first judgment module, the second judgment module and the third judgment module. The control module can control the above-mentioned three-way valve 6 based on these judgment instructions to achieve the purpose of controlling the pipeline to regulate the low-temperature gas supply.

[0065] When specific control is required, Figure 2 As shown, the gas temperature inside the air spring 1 is compared with the first set temperature. If the gas temperature inside the air spring 1 is not less than the first set temperature, it is determined that low-temperature gas needs to be provided to the inside of the air spring 1; if the gas temperature inside the air spring 1 is less than the first set temperature, it is determined that low-temperature gas does not need to be provided to the inside of the air spring 1;

[0066] When it is necessary to provide low-temperature gas to the inside of the air spring 1, the temperature of the air-conditioning outlet is compared with the temperature of the external environment gas. If the temperature of the air-conditioning outlet is lower than the temperature of the external environment gas, the first pipeline 3 is connected and the second pipeline 4 is cut off so that the low-temperature gas at the air-conditioning outlet enters the air spring 1 through the air compressor 2; if the temperature of the air-conditioning outlet is not lower than the temperature of the external environment gas, the second pipeline 4 is connected and the first pipeline 3 is cut off so that the low-temperature gas of the external environment enters the air spring 1 through the air compressor 2;

[0067] After the compressor supplies low-temperature gas to the air spring 1 for a set time, the gas temperature inside the air spring 1 is compared with the second set temperature. If the gas temperature inside the air spring 1 is not greater than the second set temperature, the supply of low-temperature gas to the air spring 1 is stopped; if the gas temperature inside the air spring 1 is greater than the second set temperature, the supply of low-temperature gas to the air spring 1 continues.

[0068] The first set temperature of the present application is 60°C to 100°C, and the second set temperature is 80°C to 100°C.

[0069] An embodiment of the present application provides a computer-readable storage medium, including: the computer-readable storage medium stores computer instructions; when the computer instructions are executed on a computing device, the computing device executes the operations in the above-mentioned embodiments.

[0070] An embodiment of the present application provides a computer program product including instructions, including a computer program or instructions. When the computer program or instructions are executed on a computer, the computing device is enabled to perform the operations in the above-mentioned embodiments.

[0071] The above embodiments are implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, the above embodiments are implemented in whole or in part in the form of a computer program product. The computer program product includes at least one computer instruction. When the computer program instruction is loaded or executed on a computer, the process or function according to the embodiment of the present invention is generated in whole or in part. The computer is a general-purpose computer, a special-purpose computer, a computer network, or other programming device. The computer instructions are stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions are transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium is any medium that can be accessed by a computer or a data storage node such as a server, data center, etc. that contains at least one medium set. The medium is a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a high-density digital video disc (DVD), or a semiconductor medium.

[0072] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A low temperature air supply system for an air suspension, characterized in that: include, A pipeline module, the pipeline module comprising a first pipeline and a second pipeline; one end of the first pipeline is connected to the air outlet of the air conditioner, and the other end is connected to the inlet end of the air compressor supplying air to the air spring; one end of the second pipeline is connected to the external atmosphere, and the other end is connected to the inlet end of the air compressor; A temperature acquisition module, which is used to collect the internal gas temperature of the air spring, the external environment temperature and the gas temperature at the air outlet of the air conditioner; A control module controls the first pipeline or the second pipeline to be connected to the air compressor based on the internal gas temperature of the air spring, the external ambient temperature and the air temperature of the air-conditioning outlet, so as to adjust the internal gas temperature of the air spring.

2. A low temperature air supply system for an air suspension as claimed in claim 1, characterized in that: The temperature acquisition module includes: A first temperature sensor, which is disposed inside the air spring and is used to collect the gas temperature inside the air spring; A second temperature sensor, which is disposed at the inlet end of the second pipeline and is used to collect the temperature of the external ambient gas; The third temperature sensor is arranged at the air outlet of the air conditioner and is used to collect the gas temperature at the air outlet of the air conditioner.

3. A low temperature air supply system for air suspension according to claim 1, characterized in that: The pipeline module comprises: A connecting pipe, one end of which is connected to the inlet end of the air compressor, and the other end of which is connected to the outlet ends of the first pipeline and the second pipeline through a three-way valve; the three-way valve is connected to the control module signal.

4. A low temperature air supply system for an air suspension as claimed in claim 1, characterized in that: The control module comprises: The first judgment module is used to compare the internal gas temperature of the air spring with the first set temperature, and to judge whether low-temperature gas needs to be provided to the inside of the air spring when the internal gas temperature of the air spring is not less than the first set temperature, and to judge whether low-temperature gas does not need to be provided to the inside of the air spring when the internal gas temperature of the air spring is less than the first set temperature.

5. A low temperature air supply system for air suspension according to claim 4, characterized in that: The control module comprises: The second judgment module is used to compare the air-conditioning outlet temperature with the external ambient gas temperature when it is necessary to provide low-temperature gas to the inside of the air spring, and to make a judgment to connect the first pipeline and cut off the second pipeline when the air-conditioning outlet temperature is lower than the external ambient gas temperature, and to make a judgment to cut off the first pipeline and connect the second pipeline when the air-conditioning outlet temperature is not lower than the external ambient gas temperature.

6. A low temperature air supply system for an air suspension as claimed in claim 5, characterized in that: The control module comprises: A third judgment module is used to compare the internal gas temperature of the air spring with a second set temperature after the compressor supplies low-temperature gas to the air spring for a set time, and to make a judgment to stop supplying low-temperature gas to the inside of the air spring when the internal gas temperature of the air spring is not greater than the second set temperature, and to make a judgment to continue supplying low-temperature gas to the inside of the air spring when the internal gas temperature of the air spring is greater than the second set temperature.

7. A method for supplying low-temperature air for an air suspension, characterized in that: The method is operated by using a low-temperature air supply system for an air suspension as claimed in any one of claims 1 to 6, comprising: Collect the gas temperature inside the air spring, and determine whether the gas inside the air spring needs to be cooled based on the gas temperature inside the air spring; When the internal gas of the air spring needs to be cooled, the air outlet temperature of the air conditioner and the external ambient gas temperature are collected, and the on-off of the first pipeline and the second pipeline are controlled based on the air outlet temperature of the air conditioner and the external ambient gas temperature.

8. A low-temperature air supply method for an air suspension as claimed in claim 7, characterized in that: The method for judging whether it is necessary to cool the gas inside the air spring based on the gas temperature inside the air spring comprises: comparing the gas temperature inside the air spring with a first set temperature; if the gas temperature inside the air spring is not less than the first set temperature, judging that it is necessary to provide low-temperature gas to the inside of the air spring; if the gas temperature inside the air spring is less than the first set temperature, judging that it is not necessary to provide low-temperature gas to the inside of the air spring.

9. A low-temperature air supply method for an air suspension according to claim 7, characterized in that: The method for controlling the on-off of the first pipeline and the second pipeline based on the air-conditioning outlet temperature and the external environment gas temperature includes: when it is necessary to provide low-temperature gas to the inside of the air spring, the air-conditioning outlet temperature is compared with the external environment gas temperature; if the air-conditioning outlet temperature is lower than the external environment gas temperature, the first pipeline is connected and the second pipeline is disconnected so that the low-temperature gas at the air-conditioning outlet enters the air spring through the air compressor; if the air-conditioning outlet temperature is not lower than the external environment gas temperature, the second pipeline is connected and the first pipeline is disconnected so that the low-temperature gas from the external environment enters the air spring through the air compressor.

10. A low-temperature air supply method for an air suspension according to claim 7, characterized in that: After the compressor supplies low-temperature gas to the air spring for a set period of time, the gas temperature inside the air spring is compared with the second set temperature. If the gas temperature inside the air spring is not greater than the second set temperature, the supply of low-temperature gas to the air spring is stopped; if the gas temperature inside the air spring is greater than the second set temperature, the supply of low-temperature gas to the air spring continues.

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