Power supply devices, air braking systems and vehicles

Abstract

This application provides a power supply device, a pneumatic braking system, and a vehicle. The functional device includes an air compressor, a cooling structure, and a heating component. The air compressor is equipped with a safety valve connected to its interior. The cooling structure is connected to the exhaust port of the air compressor and is used to cool the compressed gas discharged from the air compressor. The heating component is heat-transfer connected to the cooling structure and is used to heat the cooling structure. A linkage structure is provided between the safety valve and the heating component, and the linkage structure can control the heating component to open at least when the safety valve is open. Under this configuration, the heating component can automatically remove ice from the interior of the cooling structure, thereby ensuring that the compressed gas generated by the air compressor can flow into the air storage tank, thus ensuring the reliability of the pneumatic braking system and reducing safety hazards.

Description

Technical Field

[0001] This application relates to the field of vehicle manufacturing technology, specifically to a power supply device, a pneumatic braking system, and a vehicle. Background Technology

[0002] The air braking system of new energy commercial vehicles includes an air compressor and an air tank. The air compressor generates compressed air, which is stored in the air tank. During braking, the compressed air in the air tank enters the brake chamber through the pipeline, pushing the brake shoes or calipers and generating friction to achieve braking.

[0003] Furthermore, to ensure the normal operation of the braking system, related technologies employ a dryer to dry the compressed air. Specifically, when the air compressor is operating, water molecules in the compressed air clump together to form droplets, which are then blown into the dryer through a cooling steel pipe. There, the droplets are adsorbed by the molecular sieves within the dryer and are then blown out after the air reservoir is filled with air. However, in northern regions with low temperatures, if the pipeline is long or if the air compressor stops operating during operation, the water droplets can freeze in the pipeline. This can cause the air braking system to fail, posing a significant safety hazard. Utility Model Content

[0004] In view of this, this application provides a power supply device suitable for a pneumatic braking system, which ensures the reliability of the pneumatic braking system and reduces safety hazards by incorporating a heating component for melting ice in the cooling structure. Furthermore, this application also provides a pneumatic braking system including the aforementioned power supply device, and a vehicle including the pneumatic braking system.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A power supply device, comprising:

[0007] The air compressor is equipped with a safety valve that connects to its internal components.

[0008] A cooling structure is connected to the exhaust port of the air compressor and is used to cool the compressed gas discharged from the air compressor;

[0009] A heating component is thermally connected to the cooling structure and is used to heat the cooling structure;

[0010] The safety valve and the heating component are connected by a linkage structure, and the linkage structure can at least control the heating component to turn on when the safety valve is opened.

[0011] Optionally, the power supply device includes a dryer;

[0012] The cooling structure is a cooling pipe, with one end of the cooling pipe connected to the exhaust port of the air compressor and the other end connected to the air inlet of the dryer.

[0013] Optionally, the cooling structure includes:

[0014] Condenser;

[0015] The exhaust pipe is connected at one end to the exhaust port of the air compressor and at the other end to the air inlet of the condenser.

[0016] Optionally, in the direction of gravity, the condenser is located below the air compressor; and the exhaust pipe is arranged obliquely downward from the exhaust port of the air compressor to the air inlet of the condenser; and an automatic drain valve for draining condensate is provided at the bottom of the condenser.

[0017] Optionally, the exhaust pipe is a metal pipe capable of dissipating heat.

[0018] Optionally, the heating assembly is heat-transfer connected to the bottom of the condenser.

[0019] Optionally, the heating assembly includes:

[0020] A heating wire is heat-transfer connected to the cooling structure;

[0021] The control unit is electrically connected to the heating wire and is used to control the on / off state of the heating wire.

[0022] Optionally, the safety valve includes a valve body and a valve stem, and the valve stem is movable relative to the valve body in a first direction under the internal pressure of the air compressor to open the safety valve; the linkage structure includes:

[0023] A follower is disposed on the valve stem and is capable of moving along the valve stem in a first direction;

[0024] A detection element is fixed on the valve body and used to detect the position of the follower; and the detection element is signal-connected to the control unit to transmit the position information of the follower to the control unit.

[0025] A pneumatic braking system, comprising the power supply device described in any of the preceding claims.

[0026] A vehicle comprising the aforementioned air braking system.

[0027] The power supply device in this application includes an air compressor, a cooling structure, and a heating component. The air compressor is equipped with a safety valve connected to its interior; the safety valve is connected to the heating component via a linkage mechanism. When the safety valve opens, the heating component activates and heats the cooling structure. As the temperature rises, the ice inside the cooling structure gradually melts, thus opening the cooling circuit and allowing the compressed gas generated by the air compressor to pass through the cooling structure into the air storage tank. In other words, by incorporating a linkage mechanism between the cooling structure and the heating component, this application enables the heating component to automatically activate when the cooling circuit inside the cooling structure is blocked. This improves the automation level of the power supply device, allowing the heating component to activate promptly and melt the ice inside the cooling structure, reducing the probability of brake failure and thus mitigating safety hazards. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of a pneumatic braking system provided in an embodiment of this application.

[0030] Figure 2 This is a schematic diagram of an automatic drain valve provided in an embodiment of this application.

[0031] exist Figures 1-2 middle:

[0032] 1-Air compressor, 2-Exhaust pipe, 3-Condenser, 4-Automatic drain valve, 5-Safety valve, 6-Heating circuit;

[0033] 401-Valve body, 402-Valve core, 403-Filter screen, 404-First valve port, 405-Second valve port, 406-First cavity, 407-Second cavity;

[0034] 4011 - Liquid inlet, 4012 - Liquid outlet, 4021 - Water drain piston, 4022 - Spring. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] First, it should be noted that the power supply device in the embodiments of this application is applicable to air braking systems, but it is not limited to this. For example, it can also be used as a power supply device for air suspension systems, or as a power supply device for tire inflation systems, etc.

[0037] For ease of description, the following explanation will take the power supply device of the vehicle's air brake system as an example.

[0038] like Figure 1 As shown, the power supply device in this embodiment includes an air compressor 1, a cooling structure, an air storage tank (not shown in the figure), and a heating component.

[0039] Air compressor 1 is used to compress air and is the core power supply device of the braking system.

[0040] Furthermore, the air compressor 1 in this embodiment is equipped with a safety valve 5, which is connected to the interior of the air compressor 1 and is used to prevent the internal pressure of the air compressor 1 from becoming too high, thereby reducing the risk of the air compressor 1 exploding.

[0041] The location of the safety valve 5 on the air compressor 1 can be adapted as needed in specific implementations. This application does not make specific limitations in this regard. For example, the safety valve 5 can be installed on the top of the air compressor 1.

[0042] Furthermore, the safety valve 5 can be a spring-loaded safety valve 5, a lever-type safety valve 5, or a pilot-operated safety valve 5, and this application does not specifically limit it in this regard.

[0043] The cooling structure is designed to reduce the temperature of compressed air through heat exchange.

[0044] In this embodiment, the cooling structure is connected to the exhaust port of the air compressor 1 and is used to cool the compressed gas discharged by the air compressor 1. It is understood that during operation, the air compressor 1 compresses the air, causing its temperature to rise. Therefore, a cooling structure is needed to cool the compressed air. This helps prevent high-temperature gas from damaging the air reservoir, brake valve, and piping of the air brake system, and also reduces the moisture content in the compressed air to ensure the normal operation of the air brake system.

[0045] The cooling structure can be a cooling pipe or a cooling system consisting of a cooling pipe and a condenser 3.

[0046] A heating component is a component that can convert other forms of energy (such as electrical energy) into heat energy to heat a cooling structure.

[0047] In this embodiment, the heating component is heat-transfer connected to the cooling structure and is used to heat the cooling structure.

[0048] As described above, the cooling structure in this embodiment is used to cool the compressed gas. During this process, as the temperature of the compressed gas decreases, condensation will occur inside the cooling structure. At this time, if the vehicle is in a low-temperature environment, if the cooling circuit of the cooling structure (i.e., the flow path of the compressed gas in the cooling structure) is long, or if the air compressor 1 is de-energized and stops during the inflation process, water droplets will freeze in the cooling circuit, leading to the failure of the air braking system.

[0049] In this embodiment, the heating component is heat-transfer connected to the cooling structure. When the internal ice of the cooling structure affects the normal operation of the air brake system, the heating component can heat the cooling structure to melt the ice inside the cooling structure and ensure the normal operation of the air brake system.

[0050] The aforementioned heat transfer connection between the heating component and the cooling structure refers to the ability of the heat generated by the heating component to be transferred to the cooling structure. In an exemplary embodiment, the heating portion of the heating component can abut against the cooling structure, allowing the heat generated by the heating component to be transferred to the cooling structure via conduction. In another exemplary embodiment, the heating portion of the heating component and the cooling structure can also be in a gap-fitted configuration, meaning that the heating component and the cooling structure do not contact each other, and the heat generated by the heating component is transferred to the cooling structure via radiation.

[0051] Furthermore, in this embodiment, a linkage structure is provided between the safety valve 5 and the heating component. This linkage structure can at least control the heating component to turn on when the safety valve 5 is open. That is to say, in this embodiment, the safety valve 5 can be used to control the opening of the heating component, and when the safety valve 5 is open, the heating component turns on and heats the cooling structure.

[0052] Understandably, safety valve 5 is a normally closed valve, meaning it is closed under normal conditions. Safety valve 5 only opens when the internal pressure of air compressor 1 abnormally rises and reaches a preset pressure. In other words, when safety valve 5 opens, it indicates that the cooling circuit inside the cooling structure may be blocked by ice. In this embodiment, when safety valve 5 opens, the heating component activates and heats the cooling structure. As the temperature rises, the ice inside the cooling structure gradually melts, thus opening the cooling circuit and allowing the compressed gas generated by air compressor 1 to pass through the cooling structure and enter the air storage tank.

[0053] As described above, this embodiment sets up a linkage structure between the cooling structure and the heating component, so that the heating component can be automatically turned on when the cooling circuit inside the cooling structure is blocked. In this way, the automation level of the power supply device can be improved, the heating component can be started in time, the probability of brake failure caused by this is reduced, and thus the safety hazards can be reduced.

[0054] It should be noted that the preset pressure can be adapted to specific needs during implementation. This application does not impose any specific limitations on it. For example, it can be set to about 1.3 MPa.

[0055] In some embodiments, the linkage structure between the safety valve 5 and the heating component can control the heating component to start when the safety valve 5 is open, and control the heating component to shut down when the safety valve 5 is closed. This helps to prevent the heating component from being turned on for an extended period of time, which could lead to overheating of the cooling structure and its surrounding structures.

[0056] In some embodiments, the power supply device includes a dryer; the cooling structure is a cooling pipe, one end of which is connected to the exhaust port of the air compressor 1, and the other end is connected to the air inlet of the dryer. Furthermore, the exhaust port of the dryer is connected to an air storage tank.

[0057] In this embodiment, the compressed gas generated by the air compressor 1 flows through the cooling pipe and then enters the dryer. During this process, the moisture in the compressed gas can be absorbed by the dryer, thereby effectively reducing the water content of the compressed gas entering the air storage tank and ensuring the normal operation of the air brake system.

[0058] In some embodiments, the cooling structure includes a condenser 3 and an exhaust pipe 2.

[0059] Specifically, one end of the exhaust pipe 2 is connected to the exhaust port of the air compressor 1, and the other end is connected to the air inlet of the condenser 3. The exhaust port of the condenser 3 is connected to the air inlet of the dryer, and through the dryer, it is connected to the air storage tank; or, the exhaust port of the condenser 3 can also be directly connected to the air inlet of the air storage tank.

[0060] Preferably, the exhaust port of the condenser 3 is connected to the air inlet of the dryer, and the dryer is connected to the air storage tank; in this way, the water content in the compressed gas in the air storage tank is lower, which is more conducive to ensuring the normal operation of the air braking system.

[0061] In this embodiment, the compressed gas generated by the air compressor 1 enters the condenser 3 through the exhaust pipe 2 and is cooled in the condenser 3. Compared with the previous embodiment, which uses a cooling pipe to cool the compressed gas, the cooling effect is better when the compressed gas is cooled by the condenser 3 in this embodiment.

[0062] Furthermore, based on the cooling structure including the condenser 3, in some embodiments, the condenser 3 is located below the air compressor 1 in the direction of gravity; and the exhaust pipe 2 is arranged obliquely downward from the exhaust port of the air compressor 1 to the air inlet of the condenser 3. Additionally, an automatic drain valve 4 for discharging condensate is provided at the bottom of the condenser 3.

[0063] In this configuration, when condensate is generated inside the cooling structure, it will concentrate at the bottom of the condenser 3 under the action of gravity. When the condensate at the bottom of the condenser 3 accumulates to a certain amount, the automatic drain valve 4 will automatically open to drain the condensate inside the condenser 3. This helps to prevent the condensate inside the condenser 3 from freezing and blocking the condenser 3.

[0064] In some embodiments, the automatic drain valve 4 may include a drain controller, a sensor, and a drive structure for controlling the opening and closing of the valve.

[0065] The aforementioned sensor is used to detect the water level at the bottom of the condenser 3 and is electrically connected to the drain controller. The drain controller is also connected to the drive mechanism. In this embodiment, the automatic drain valve 4 operates as follows: the sensor detects the water level at the bottom of the condenser 3 in real time. When the water level reaches a preset maximum value, the drain controller controls the drive mechanism to start, causing the drive mechanism to move the valve and open the automatic drain valve 4. When the sensor detects that the water level inside the condenser 3 has reached a preset minimum water level, the drain controller controls the drive mechanism to start, causing the drive mechanism to move the valve and close the automatic drain valve 4.

[0066] In other implementations, such as Figure 2 As shown, the automatic drain valve 4 includes a valve body 401, a valve core 402, and a filter screen 403.

[0067] The valve body 401 has an internal cavity and has an inlet 4011 and an outlet 4012 communicating with the cavity.

[0068] The valve core 402 is disposed within the aforementioned cavity and includes a drain piston 4021 and a spring 4022. The drain piston 4021 is slidably connected to the valve body 401, and a first valve port 404 is formed between the drain piston 4021 and the top wall of the cavity, while a second valve port 405 is formed between the drain piston 4021 and the bottom wall of the cavity. The spring 4022 is disposed between the drain piston 4021 and the bottom wall of the cavity and is in a compressed state to apply a force toward the top wall of the cavity to the drain piston 4021, thereby closing the first valve port 404.

[0069] Furthermore, such as Figure 2 As shown, in the arrangement direction of the inlet 4011 and the outlet 4012, the valve core 402 divides the cavity into a first cavity 406 and a second cavity 407, and the first cavity 406 and the second cavity 407 can be connected through the first valve port 404.

[0070] Furthermore, the portion of the drain piston 4021 that engages with the top wall of the cavity to form the first valve port 404 can be a deformable diaphragm structure.

[0071] The filter screen 403 is located at the liquid inlet 4011 of the valve body 401 and is used to block dirt from entering the valve body, thereby reducing the probability of the automatic drain valve 4 becoming clogged.

[0072] In this embodiment, the working principle of the automatic drain valve 4 is as follows:

[0073] The condensate inside the condenser 3 accumulates at the bottom of the condenser 3 and reaches the first chamber 406 through the filter screen;

[0074] When the gas pressure in the gas storage tank increases, the pressure inside the condenser 3 also increases synchronously because the condenser 3 is connected to the gas storage tank. At this time, the gas pressure acting on the drain piston 4021 overcomes the spring force of the spring 4022, opening the first valve port 404. This allows the condensate inside the first chamber 406 to enter the second chamber 407 through the first valve port 404. Meanwhile, the second valve port 405 is closed due to the gas pressure.

[0075] Once the gas pressure in the gas storage tank stabilizes, the pressure inside the condenser 3 also stabilizes synchronously. The gas pressure acting on the drain piston 4021, the gas pressure inside the second chamber 407, and the pressure of the spring 4022 reach a balanced state. At this time, both the first valve port 404 and the second valve port 405 are closed. The gas pressure inside the second chamber 407 is slightly lower than the gas pressure inside the first chamber 406.

[0076] When braking is applied, the air pressure in the air reservoir decreases, and the pressure inside the condenser 3 decreases synchronously. When it drops to the air pressure in the second chamber 407, the drain piston 4021 pushes upward, the first valve port 404 closes, the second valve port 405 opens, and the water inside the second chamber 407 is discharged; thus achieving automatic water discharge.

[0077] When the cooling structure includes an exhaust pipe 2 and a condenser 3, the exhaust pipe 2 can be an insulated pipe. This is suitable for scenarios where the exhaust pipe 2 is relatively long, resulting in its lowest point being located in a certain section (hereinafter referred to as the lowest section) in the middle. It is understandable that when condensate forms inside the exhaust pipe 2, it will concentrate at the lowest section under the influence of gravity and accumulate there, easily leading to blockage. In this embodiment, by setting the exhaust pipe 2 as an insulated pipe, the formation of condensate inside the exhaust pipe 2 can be reduced or even avoided, thereby lowering the probability of blockage at the lowest section.

[0078] Of course, the exhaust pipe 2 can also be a metal pipe that can be used for heat dissipation, such as a copper pipe or an aluminum pipe. This is suitable for scenarios where the exhaust pipe 2 is arranged obliquely downwards from the exhaust port of the air compressor 1 to the air inlet of the condenser 3. In this case, the exhaust pipe 2 can be used to assist in cooling the compressed gas, thereby improving the cooling effect of the compressed gas.

[0079] In some embodiments, the condenser 3 is located below the air compressor 1; and when the exhaust pipe 2 is arranged obliquely downward from the exhaust port of the air compressor 1 to the air inlet of the condenser 3, the heating component is heat-transfer connected to the bottom of the condenser 3.

[0080] As mentioned above, in this embodiment, the condensate inside the cooling structure will concentrate at the bottom of the condenser 3 under the action of gravity. Based on this, by controlling the heating component to heat the bottom of the condenser 3, the heat transfer path to the freezing area at the bottom of the condenser 3 is shorter, which is conducive to improving the heat utilization efficiency of the heating component.

[0081] In some embodiments, the heating assembly includes a heating wire and a control unit.

[0082] The heating wire is heat-transferringly connected to the cooling structure; the control unit is electrically connected to the heating wire and is used to control the on / off state of the heating wire. Specifically, when the safety valve 5 is open, the control unit controls the heating wire to be energized so that the heating assembly can heat the cooling structure; when the safety valve 5 is closed, the control unit controls the heating wire to be de-energized so as to stop the heating assembly from heating the cooling structure.

[0083] Based on the heating assembly including the heating wire and the control unit, in some embodiments, the safety valve 5 includes a valve body and a valve stem, and the valve stem is capable of moving relative to the valve body in a first direction under the internal pressure of the air compressor 1 to open the safety valve 5.

[0084] Based on the aforementioned safety valve 5, the linkage structure includes a follower and a detection element.

[0085] The follower is mounted on the valve stem and can move along the valve stem in a first direction; the detection element is fixed on the valve body and is used to detect the position of the follower; and the detection element is signal-connected to the control unit to transmit the position information of the follower to the control unit.

[0086] The principle of the linkage structure in this embodiment is as follows:

[0087] When the pressure inside the air compressor 1 increases to the preset pressure, the valve stem of the safety valve 5 moves in the first direction to open the safety valve 5. During the movement of the valve stem, the follower on the valve stem moves accordingly. When the safety valve 5 is opened, the follower moves to the first detection position. After the detection element detects that the follower is in the first detection position, it sends a first position signal to the control unit of the heating component. After receiving the first position signal, the control unit controls the heating wire to be energized to heat the cooling structure.

[0088] As the heating element heats the cooling structure, the ice inside the cooling structure gradually melts, allowing the compressed gas inside the air compressor 1 to flow through the cooling structure to the air storage tank. This causes the pressure inside the air compressor 1 to gradually decrease. When the pressure inside the air compressor 1 is less than the preset pressure, the valve stem of the safety valve 5 moves to close the safety valve 5. During this process, the follower on the valve stem moves accordingly. When the safety valve 5 is closed, the follower moves to the second detection position. After the detection element detects that the follower is in the second detection position, it sends a second position signal to the control unit of the heating element. After receiving the second position signal, the control unit controls the heating wire to be de-energized to end the heating of the cooling structure.

[0089] It should be understood that the above is only one feasible implementation of the linkage structure, but this application is not limited to this. For example, such as Figure 1 As shown, the heating wire of the heating assembly can also be directly connected to the safety valve 5 via the heating circuit 6, so that the valve stem of the safety valve 5 can directly control the on / off state of the heating wire. Specifically, the safety valve 5 is connected to the follower via an insulating component. The heating circuit 6 of the heating wire includes a first end and a second end. The follower is electrically connected to the first end. When the follower reaches the first detection position, it becomes electrically connected to the second end, thereby connecting the heating circuit 6 of the heating wire and energizing the heating wire. When the follower reaches the second detection position, it disconnects from the second end, thereby disconnecting the heating circuit 6 of the heating wire and de-energizing the heating wire.

[0090] This application also provides an air brake system for braking a vehicle. Furthermore, this air brake system includes the power supply device found in any of the above embodiments. Therefore, the beneficial effects of the power supply device on the air brake system in this embodiment can be referred to the above discussion, and will not be repeated here.

[0091] Furthermore, this application provides a vehicle that includes the aforementioned air braking system. It should be noted that since the vehicle in this embodiment includes the aforementioned air braking system, the beneficial effects of the air braking system on the vehicle in this application are detailed above and will not be repeated here.

[0092] It should also be noted that the aforementioned vehicles include, but are not limited to, new energy vehicles, gasoline vehicles, and hybrid vehicles. Furthermore, these vehicles include, but are not limited to, passenger cars and public vehicles.

[0093] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0094] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0095] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0096] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0097] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0098] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. An energy supply device, characterized by include: The air compressor is equipped with a safety valve that connects to its internal components. A cooling structure is connected to the exhaust port of the air compressor and is used to cool the compressed gas discharged from the air compressor; A heating component is thermally connected to the cooling structure and is used to heat the cooling structure; The safety valve and the heating component are connected by a linkage structure, and the linkage structure can at least control the heating component to turn on when the safety valve is opened.

2. The power supply device according to claim 1, characterized in that, The power supply device includes a dryer; The cooling structure is a cooling pipe, with one end of the cooling pipe connected to the exhaust port of the air compressor and the other end connected to the air inlet of the dryer.

3. The energy supply device of claim 1, wherein, The cooling structure includes: Condenser; The exhaust pipe is connected at one end to the exhaust port of the air compressor and at the other end to the air inlet of the condenser.

4. The energy supply device according to claim 3, characterized in that In the direction of gravity, the condenser is located below the air compressor; and the exhaust pipe is arranged obliquely downward from the exhaust port of the air compressor to the air inlet of the condenser; and an automatic drain valve for draining condensate is provided at the bottom of the condenser.

5. The energy supply device according to claim 4, characterized in that The exhaust pipe is a metal pipe that can be used for heat dissipation.

6. The energy supply device of claim 4, wherein, The heating component is heat-transfer connected to the bottom of the condenser.

7. The power supply device according to any one of claims 1-6, characterized in that, The heating component includes: A heating wire is heat-transfer connected to the cooling structure; The control unit is electrically connected to the heating wire and is used to control the on / off state of the heating wire.

8. The energy supply device according to claim 7, characterized in that The safety valve includes a valve body and a valve stem, and the valve stem is capable of moving relative to the valve body in a first direction under the internal pressure of the air compressor to open the safety valve; The linkage structure includes: A follower is disposed on the valve stem and is capable of moving along the valve stem in a first direction; A detection element is fixed on the valve body and used to detect the position of the follower; and the detection element is signal-connected to the control unit to transmit the position information of the follower to the control unit.

9. A pneumatic brake system characterized by, Includes the power supply device as described in any one of claims 1-8.

10. A vehicle characterized by comprising: Includes the air braking system as described in claim 9.

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