Brake, air conditioning system and vehicle

Abstract

This disclosure relates to a brake, an air conditioning system, and a vehicle. The brake includes a brake drum, a brake cylinder, brake shoes, brake friction pads, and a brake cooling device, all disposed within the brake drum. The brake friction pads are located between the inner surface of the brake drum and the brake shoes. The drive end of the brake cylinder is connected to the brake shoes and is used to drive the brake shoes to move towards the inner surface of the brake drum, thereby pressing the brake friction pads against the inner surface of the brake drum. The brake cooling device is disposed between the brake friction pads and the brake shoes, with one side of the brake cooling device in contact with the brake friction pads. A coolant flow channel is formed within the brake cooling device, and an inlet and an outlet, both communicating with the coolant flow channel, are provided on the brake cooling device. This disclosure improves the heat dissipation effect of the brake friction pads during vehicle braking, reduces the temperature of the brake, and transfers the absorbed heat to the air conditioning system, utilizing waste heat. This not only improves the braking effect and service life of the brake but also reduces the overall vehicle energy consumption.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle technology, specifically to a brake, an air conditioning system, and a vehicle. Background Technology

[0002] When a vehicle brakes, the brake discs or pads can generate high temperatures, especially under conditions of frequent braking or downhill driving, where brake temperatures can reach hundreds of degrees Celsius. Currently, brakes use natural cooling, which is ineffective. High-temperature operation of brakes can lead to shorter braking distances, poor braking performance, and in severe cases, brake failure. It can also shorten the lifespan of the brakes. How to effectively reduce the temperature of the brakes and utilize the heat generated by them is a technical problem that urgently needs to be solved. Summary of the Invention

[0003] The purpose of this disclosure is to provide a brake, an air conditioning system, and a vehicle. This disclosure improves the heat dissipation effect of the brake friction pads during service braking, reduces the temperature of the brake, and transfers the absorbed heat to the air conditioning system, utilizing waste heat. This not only improves the braking effect and service life of the brake, but also reduces the overall vehicle energy consumption.

[0004] To achieve the above objectives, this disclosure provides a brake, including a brake drum, a brake cylinder, a brake shoe, a brake friction pad, and a brake cooling device, all disposed within the brake drum. The brake friction pad is located between the inner surface of the brake drum and the brake shoe. The driving end of the brake cylinder is connected to the brake shoe and is used to drive the brake shoe to move toward the inner surface of the brake drum, thereby pushing the brake friction pad to press against the inner surface of the brake drum. The brake cooling device is disposed between the brake friction pad and the brake shoe, and one side of the brake cooling device is in contact with the brake friction pad. A coolant flow channel is formed within the brake cooling device, and the brake cooling device is provided with an inlet and an outlet, both communicating with the coolant flow channel.

[0005] Optionally, there are two brake shoes, which are disposed opposite each other inside the brake drum. Each brake shoe is provided with a brake friction pad between its inner surface and the brake drum. The brake cooling device includes a hose and two brake cooling components. Each brake shoe is provided with a brake cooling component between its corresponding brake friction pad. Each brake cooling component has a coolant flow channel formed inside it. The coolant flow channels of the two brake cooling components are connected through the hose. One of the two brake cooling components is provided with a water inlet, and the other brake cooling component is provided with a water outlet.

[0006] Optionally, each of the brake cooling components includes a housing and a plurality of heat-conducting plates, the plurality of heat-conducting plates being spaced apart within the housing, and a coolant flow channel being formed between each pair of adjacent heat-conducting plates, wherein the heat-conducting plates are wavy.

[0007] Optionally, the brake further includes a base plate, the open end of the brake drum faces the base plate and is rotatably connected to the base plate, the brake cylinder is mounted on the base plate, and the base plate has a first through hole and a second through hole, the first through hole being for a water supply pipe connected to the water inlet to pass through, and the second through hole being for a water outlet pipe connected to the water outlet to pass through.

[0008] Optionally, the brake further includes a first temperature sensor disposed within the coolant flow channel and used to detect the temperature of the coolant within the coolant flow channel.

[0009] This disclosure also provides an air conditioning system, including a heater core, a water pump, a blower, and the aforementioned brake. The outlet of the brake is connected to the inlet of the heater core, and the outlet of the heater core is connected to the inlet of the brake. The blower is used to blow air onto the heater core. The water pump is disposed between the outlet of the heater core and the inlet of the brake, or between the outlet of the brake and the inlet of the heater core.

[0010] Optionally, the air conditioning system further includes a three-way valve and a heater, wherein port A of the three-way valve is connected to the outlet of the water pump, port B of the three-way valve is connected to the inlet of the brake, port C of the three-way valve is connected to the inlet of the heater, and the outlet of the heater is connected to the inlet of the warm air core.

[0011] Optionally, the brake further includes a first temperature sensor disposed within the coolant flow channel and used to detect the temperature of the coolant within the coolant flow channel. The air conditioning system further includes a controller electrically connected to the water pump, the blower, the three-way valve, the heater, and the first temperature sensor. The controller is used to respond to a cabin heating command by determining whether the temperature value detected by the first temperature sensor is greater than a first temperature threshold. When the temperature value detected by the first temperature sensor is greater than the first temperature threshold, the controller controls the A port of the three-way valve to be connected to the B port of the three-way valve, and controls the water pump and the blower to be turned on, while the heater is turned off. When the temperature value detected by the first temperature sensor is less than the first temperature threshold, the controller controls the A port of the three-way valve to be connected to the C port of the three-way valve, and controls the water pump, the blower, and the heater to be turned on.

[0012] Optionally, the controller is further configured to respond to a crew cabin heating stop command, determine whether the temperature value detected by the first temperature sensor is greater than a second temperature threshold, and when the temperature value detected by the first temperature sensor is greater than the second temperature threshold, control the A port of the three-way valve to be connected to the B port of the three-way valve, and control the water pump to start and the blower to stop.

[0013] This disclosure also provides a vehicle including the brakes or the air conditioning system described above.

[0014] By utilizing the above technical solution and the principle of heat conduction, the brake cooling device is tightly attached to the surface of the brake friction pad. This allows the heat generated by the friction between the brake drum and the brake friction pad to be conducted to the brake cooling device and further to the coolant flowing inside the brake cooling device. This accelerates the heat dissipation of the brake friction pad, reduces the temperature of the brake, improves the braking effect and service life of the brake, and recovers the heat generated by braking.

[0015] By combining the brake with a brake cooling device with the heater core, the heat generated by the brake during braking can be transferred to the heater core for waste heat utilization, reducing the overall vehicle energy consumption and increasing the vehicle's driving range.

[0016] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a brake provided in an exemplary embodiment of the present disclosure;

[0019] Figure 2 This is a cross-sectional view of the brake provided in an exemplary embodiment of this disclosure from plane AA.

[0020] Figure 3 This is a schematic diagram of the structure of a brake cooling device provided in an exemplary embodiment of the present disclosure;

[0021] Figure 4 This is a schematic diagram of the structure of an air conditioning system provided in an exemplary embodiment of the present disclosure;

[0022] Figure 5 This is a flowchart of a control method for an air conditioning system provided in an exemplary embodiment of the present disclosure.

[0023] Explanation of reference numerals in the attached figures

[0024] 1-Brake drum;

[0025] 2-Brake cylinder;

[0026] 3-Brake shoes;

[0027] 4-Brake friction pads;

[0028] 5-Brake cooling device; 51-Hose; 52-Brake cooling component; 521-Coolant flow channel; 522-Housing; 523-Heat conduction plate;

[0029] 6-Inlet;

[0030] 7-Outlet;

[0031] 8-Base plate;

[0032] 9 - First temperature sensor;

[0033] 10-Heat air core;

[0034] 11-Water pump;

[0035] 12- Blower;

[0036] 13-Three-way valve;

[0037] 14-Heater;

[0038] 15- Kettle;

[0039] 16 - Return spring. Detailed Implementation

[0040] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0041] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" are generally used to define the orientation of the accompanying drawings, and "inner" and "outer" refer to the inner and outer parts of the relevant components. Furthermore, terms such as "first" and "second" are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0043] like Figures 1 to 3 As shown, according to a first aspect of this disclosure, a brake is provided, including a brake drum 1, a brake cylinder 2, a brake shoe 3, a brake friction pad 4, and a brake cooling device 5, all disposed within the brake drum 1. The brake friction pad 4 is located between the inner surface of the brake drum 1 and the brake shoe 3. The driving end of the brake cylinder 2 is connected to the brake shoe 3 and is used to drive the brake shoe 3 to move toward the inner surface of the brake drum 1, thereby pushing the brake friction pad 4 to press against the inner surface of the brake drum 1. The brake cooling device 5 is disposed between the brake friction pad 4 and the brake shoe 3, and one side of the brake cooling device 5 is in contact with the brake friction pad 4. A coolant flow channel 521 is formed inside the brake cooling device 5, and an inlet 6 and an outlet 7, both communicating with the coolant flow channel 521, are provided on the brake cooling device.

[0044] The wheel is mounted on the outside of the brake drum 1. The brake shoe 3, brake friction pad 4, and brake cooling device 5 are all arc-shaped structures that match the arc surface of the inner side wall of the brake drum 1. The brake friction pad 4, brake cooling device 5, and brake shoe 3 are stacked in sequence.

[0045] When the vehicle is driving normally, there is a gap between the brake friction pad 4 and the brake drum 1. The brake drum 1 rotates with the wheel. When the vehicle needs to brake, the piston in the brake cylinder 2 extends outward under the action of hydraulic oil, pushing the brake friction pad 4 toward the inner wall of the brake drum 1 and pressing it against the inner wall of the brake drum 1. The friction between the brake drum 1 and the brake friction pad 4 prevents the brake drum 1 from rotating, thereby achieving wheel braking.

[0046] Through the above technical solution, by utilizing the principle of heat conduction, the brake cooling device 5 is tightly attached to the surface of the brake friction pad 4, which enables the heat generated by the friction between the brake drum 1 and the brake friction pad 4 to be conducted to the brake cooling device 5, and further conducted to the coolant flowing inside the brake cooling device 5, thereby accelerating the heat dissipation of the brake friction pad 4, reducing the temperature of the brake, improving the braking effect and service life of the brake, and recovering the heat generated by braking.

[0047] In one exemplary embodiment of this disclosure, the brake friction pads 4 are fixed at intervals on the brake shoes 3, and the brake cooling device 5 is installed in the space between the brake friction pads 4 and the brake shoes 3. One side of the outer contour surface of the brake cooling device 5 is tightly attached to the surface of the brake friction pads 4. When the brake cylinder 2 pushes the brake friction pads 4 to press against the inner surface of the brake drum 1, the brake cooling device 5 does not bear pressure, thereby preventing the brake cooling device 5 from collapsing or being damaged by force, and improving the service life of the brake cooling device 5.

[0048] Optionally, there are two brake shoes 3, which are arranged opposite each other inside the brake drum 1. Each brake shoe 3 is provided with a brake friction pad 4 between its inner surface and the brake drum 1. The brake cooling device 5 includes a hose 51 and two brake cooling components 52. Each brake shoe 3 is provided with a brake cooling component 52 between its corresponding brake friction pad 4. Each brake cooling component 52 has a coolant flow channel 521. The coolant flow channels 521 of the two brake cooling components 52 are connected by the hose 51. One of the two brake cooling components 52 is provided with an inlet 6, and the other brake cooling component 52 is provided with an outlet 7.

[0049] Through the above technical solution, a brake cooling component 52 is provided between each brake shoe 3 and its corresponding brake friction pad 4, which improves the cooling effect of the brake.

[0050] The brake cylinder 2 includes a cylinder body and two drive ends located at both ends of the cylinder body. The two drive ends can perform synchronous extension and retraction movements. The two drive ends at both ends of the brake cylinder 2 are respectively connected to the opposite sides of two oppositely arranged brake shoes 3. Each brake shoe 3 has a brake cooling component 52 and a brake friction pad 4 arranged sequentially on the side away from the brake cylinder 2. The brake cylinder 2 can simultaneously drive the two brake shoes 3 to move toward the inner wall of the brake drum 1, so as to push the brake friction pad 4 toward the inner wall of the brake drum 1 and press it against the inner wall of the brake drum 1.

[0051] Since the two brake shoes 3 can move relative to each other, that is, the two brake cooling components 52 can move relative to each other, in order to ensure that the movement of the two brake cooling components 52 does not affect the connection between the coolant flow channels 521 of the two brake cooling components 52, the coolant flow channels 521 of the two brake cooling components 52 are connected by a hose 51, wherein the hose 51 can elastically extend or bend.

[0052] In one exemplary embodiment of this disclosure, there are two brake cylinders 2, which are arranged parallel to each other in the brake drum 1. The two driving ends of one brake cylinder 2 are respectively connected to the same side ends of two oppositely arranged brake shoes 3, and the two driving ends of the other brake cylinder 2 are respectively connected to the other same side ends of two oppositely arranged brake shoes 3.

[0053] In this disclosure, there are various ways to connect the brake cylinder 2 and the brake shoe 3, such as bolt connection, snap connection, etc., and this disclosure does not limit the connection.

[0054] In one exemplary embodiment of this disclosure, the brake further includes a return spring 16. The two ends of the return spring 16 are respectively connected to two oppositely arranged brake shoes 3. The return spring 16 is used to retract and pull the brake shoes 3 back to their original position after the hydraulic oil in the brake cylinder 2 is depressurized. That is, under the action of the return spring 16, the brake shoes 3 move away from the inner surface of the brake drum 1, thereby causing the brake friction pads 4 to move away from the inner surface of the brake drum 1, and a gap is formed between the brake friction pads 4 and the brake drum 1. The number of return springs 16 can be two, arranged parallel to each other at intervals. The two ends of one return spring 16 are respectively connected to the same side end of the two oppositely arranged brake shoes 3, and the two ends of the other return spring 16 are respectively connected to the other same side end of the two oppositely arranged brake shoes 3.

[0055] Optionally, each brake cooling component 52 includes a housing 522 and a plurality of heat-conducting plates 523, the plurality of heat-conducting plates 523 being spaced apart within the housing 522, and a coolant flow channel 521 being formed between each two adjacent heat-conducting plates 523, wherein the heat-conducting plates 523 are wavy.

[0056] Through the above technical solution, a wave-shaped coolant flow channel 521 can be formed between two adjacent wave-shaped heat conduction plates 523, which extends the length of the coolant flow channel 521 and improves the cooling effect of the brake cooling component 52.

[0057] In one exemplary embodiment of this disclosure, the housing 522 is an arc-shaped cavity with openings at both ends. Multiple heat-conducting plates 523 are equally spaced inside the housing 522, and each heat-conducting plate 523 is connected to the upper and lower surfaces of the housing 522 to divide the interior of the housing 522 into multiple coolant channels 521. Both ends of the multiple coolant channels 521 extend to the openings at both ends of the housing 522, and the openings of the two housings 522 are connected by a flexible hose 51.

[0058] Optionally, the brake also includes a base plate 8, with the open end of the brake drum 1 facing the base plate 8 and rotatably connected to the base plate 8, and the brake cylinder 2 mounted on the base plate 8. The base plate 8 has a first through hole and a second through hole. The first through hole is for the water supply pipe connected to the water inlet 6 to pass through, and the second through hole is for the water outlet pipe connected to the water outlet 7 to pass through.

[0059] In one exemplary embodiment of this disclosure, the brake drum 1 is a disc-shaped structure with an internal hollow interior and an opening on one side, and the base plate 8 is a circular plate structure that matches the opening of the brake drum 1. The opening end of the brake drum 1 is rotatably connected to the base plate 8 through a bearing, and two brake cylinders 2 are symmetrically arranged on the base plate 8.

[0060] Optionally, the brake also includes a first temperature sensor 9, which is disposed in the coolant flow channel 521 and is used to detect the temperature of the coolant in the coolant flow channel 521.

[0061] like Figure 4 As shown, according to a second aspect of this disclosure, an air conditioning system is provided, including a heater core 10, a water pump 11, a blower 12, and the aforementioned brake. The outlet 7 of the brake is connected to the inlet of the heater core 10, and the outlet of the heater core 10 is connected to the inlet 6 of the brake. The blower 12 is used to blow air onto the heater core 10. The water pump 11 is disposed between the outlet of the heater core 10 and the inlet 6 of the brake, or between the outlet 7 of the brake and the inlet of the heater core 10.

[0062] When there is a need for heating inside the vehicle, the coolant flows through the brake under the action of the water pump 11, absorbs the heat generated by the friction of the brake friction pads 4 to cool the brake, and then the high-temperature coolant flows through the heater core 10 for heat exchange. After the heat exchange and cooling, the coolant continues to flow through the brake under the action of the water pump 11, forming a cycle.

[0063] In one exemplary embodiment of this disclosure, the heater core 10 is located in the air outlet channel between the air outlet of the blower 12 and the vehicle interior heater outlet, and the blower 12 can heat the vehicle cabin by blowing air into the heater core 10.

[0064] By combining the brake with the brake cooling device 5 with the heater core 10, the heat generated by the brake during braking can be transferred to the heater core 10 for waste heat utilization, thereby reducing the overall vehicle energy consumption and increasing the vehicle's driving range.

[0065] In one exemplary embodiment of this disclosure, the air conditioning system further includes a water tank 15, which is connected to a water pump 11 via a pipeline, and the coolant in the water tank 15 can replenish the air conditioning system.

[0066] Optionally, the air conditioning system also includes a three-way valve 13 and a heater 14. Port A of the three-way valve 13 is connected to the outlet of the water pump 11, port B of the three-way valve 13 is connected to the inlet 6 of the brake, port C of the three-way valve 13 is connected to the inlet of the heater 14, and the outlet of the heater 14 is connected to the inlet of the warm air core 10.

[0067] Through the above technical solution, the setting of the three-way valve 13 enables the air conditioning system to form two heating paths, namely, absorbing the heat generated during braking to heat the coolant or heating the coolant through the heater 14, which can be flexibly switched and has better applicability. At the same time, by utilizing waste heat, the energy consumption of the whole vehicle is reduced.

[0068] Optionally, the brake also includes a first temperature sensor 9, which is disposed in the coolant flow channel 521 and used to detect the temperature of the coolant in the coolant flow channel 521. The heater 14 has a second temperature sensor, which is disposed in the heater 14 and used to detect the temperature of the coolant in the heater 14. The air conditioning system also includes a controller, which is electrically connected to the water pump 11, the blower 12, the three-way valve 13, the heater 14, the first temperature sensor 9, and the second temperature sensor. The controller is used to respond to the crew cabin heating command and determine whether the temperature value detected by the first temperature sensor 9 is greater than a first temperature threshold. When the temperature value detected by the first temperature sensor 9 is greater than the first temperature threshold, the controller controls the A port of the three-way valve 13 to be connected to the B port of the three-way valve 13, and controls the water pump 11 and the blower 12 to be turned on, and the heater 14 to be turned off. When the temperature value detected by the first temperature sensor 9 is less than the first temperature threshold, the controller controls the A port of the three-way valve 13 to be connected to the C port of the three-way valve 13, and controls the water pump 11, the blower 12, and the heater 14 to be turned on.

[0069] The first temperature threshold is greater than or equal to the minimum heating temperature of heater 14.

[0070] Through the above technical solution, the controller can flexibly switch the heating path of the coolant, making reasonable use of waste heat while ensuring that the heating temperature inside the vehicle compartment remains unchanged, thereby reducing the overall energy consumption of the vehicle.

[0071] In one exemplary embodiment of this disclosure, when the temperature detected by the first temperature sensor 9 is greater than the temperature detected by the second temperature sensor, the controller connects port A and port B of the three-way valve 13, and turns on the water pump 11 and blower 12 while turning off the heater 14. The heat generated during braking is used to heat the coolant, reducing overall vehicle energy consumption. When the temperature detected by the first temperature sensor 9 is less than the temperature detected by the second temperature sensor, the heat generated during braking is insufficient to meet the heating requirements of the vehicle cabin. The controller connects port A and port C of the three-way valve 13, and turns on the water pump 11, blower 12, and heater 14, using the heater to heat the coolant. By flexibly switching the cooling path of the coolant to meet the heating requirements of the vehicle cabin, waste heat is rationally utilized and overall vehicle energy consumption is reduced while maintaining a constant cabin temperature.

[0072] Optionally, the controller is also used to respond to the crew cabin stop heating command, determine whether the temperature value detected by the first temperature sensor 9 is greater than the second temperature threshold, and when the temperature value detected by the first temperature sensor 9 is greater than the second temperature threshold, control the A port of the three-way valve 13 to be connected to the B port of the three-way valve 13, and control the water pump 11 to be turned on and the blower 12 to be turned off.

[0073] When the brake temperature is high, brake failure and reduced lifespan are likely to occur. In order not to affect the above-mentioned performance of the brake, the brake needs to be cooled down. In an exemplary embodiment of this disclosure, the second temperature threshold is the minimum temperature that affects the performance of the brake. When the temperature of the brake is greater than the minimum temperature that affects the performance of the brake, the brake needs to be cooled down.

[0074] Through the above technical solution, the coolant can cool the brake as it flows through the brake, thereby improving the braking effect and service life of the brake.

[0075] During the above process, after the heat exchange, the heater core 10 will not blow warm air into the cabin because the blower 12 is in a closed state.

[0076] In one exemplary embodiment of this disclosure, when the temperature value detected by the first temperature sensor 9 is greater than the minimum temperature affecting the brake performance, the controller controls the A port of the three-way valve 13 to be connected to the B port of the three-way valve 13, and controls the water pump 11 to start and the blower 12 to be turned off, so as to cool the brake. When the temperature value detected by the first temperature sensor 9 is less than the minimum temperature affecting the brake performance, the controller controls the water pump 11 to stop, and the coolant does not circulate.

[0077] Optionally, a second temperature sensor is disposed inside the heater 14 and is used to detect the temperature of the coolant inside the heater 14. The second temperature sensor is electrically connected to the controller. The controller is also used to respond to the passenger compartment heating command to determine whether the temperature value detected by the second temperature sensor is greater than a third temperature threshold. When the temperature value detected by the second temperature sensor is greater than the third temperature threshold, the controller controls the heater 14 to reduce its power. The third temperature threshold is the set value of the heating temperature inside the passenger compartment.

[0078] Optionally, such as Figure 5 As shown, this disclosure also provides an air conditioning system control method applicable to the aforementioned air conditioning system. When the controller responds to a passenger compartment heating command, the method includes:

[0079] S100: Obtain the detected temperature of the first temperature sensor 9.

[0080] S110: Compare the detected temperature of the first temperature sensor 9 with the first temperature threshold.

[0081] S120: When the temperature detected by the first temperature sensor 9 is greater than the first temperature threshold, the A port of the three-way valve 13 is connected to the B port of the three-way valve 13, and the water pump 11 and the blower 12 are turned on, while the heater 14 is turned off.

[0082] S130: When the temperature detected by the first temperature sensor 9 is not greater than the first temperature threshold, control the A port of the three-way valve 13 to be connected to the C port of the three-way valve 13, and control the water pump 11, blower 12 and heater 14 to be turned on.

[0083] Optionally, when heater 14 is turned on, the method further includes:

[0084] S131: Compare the detected temperature of the second temperature sensor with the third temperature threshold.

[0085] S132: When the temperature detected by the second temperature sensor is greater than the third temperature threshold, control the heater 14 to reduce the power.

[0086] S133: When the temperature detected by the second temperature sensor is not greater than the third temperature threshold, control the heater to maintain the preset power.

[0087] In the above-mentioned air conditioning system control method, the control subject is the controller.

[0088] According to a third aspect of this disclosure, a vehicle is provided, including the aforementioned brake or the aforementioned air conditioning system.

[0089] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0090] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0091] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A brake characterized by, Includes a brake drum, as well as a brake cylinder, brake shoes, brake friction pads, and brake cooling device, all of which are disposed within the brake drum; The brake friction pad is located between the inner surface of the brake drum and the brake shoe. The drive end of the brake cylinder is connected to the brake shoe and is used to drive the brake shoe to move toward the inner surface of the brake drum, so as to push the brake friction pad to press against the inner surface of the brake drum. The brake cooling device is disposed between the brake friction pad and the brake shoe, and one side of the brake cooling device is in contact with the brake friction pad. A coolant flow channel is formed inside the brake cooling device, and an inlet and an outlet that are both connected to the coolant flow channel are provided on the brake cooling device. There are two brake shoes, which are arranged opposite each other inside the brake drum. Each brake shoe is provided with a brake friction pad between itself and the inner surface of the brake drum. The brake cooling device includes a hose and two brake cooling components. Each brake shoe is provided with a brake cooling component between itself and its corresponding brake friction pad. Each brake cooling component has a coolant flow channel. The coolant flow channels of the two brake cooling components are connected through the hose. One of the two brake cooling components is provided with a water inlet, and the other brake cooling component is provided with a water outlet. Each of the brake cooling components includes a housing and a plurality of heat-conducting plates, the plurality of heat-conducting plates being spaced apart within the housing, and a coolant flow channel being formed between each two adjacent heat-conducting plates; The heat-conducting plate is wavy; The brake also includes a base plate, the open end of the brake drum faces the base plate and is rotatably connected to the base plate, the brake cylinder is mounted on the base plate, and the base plate has a first through hole and a second through hole. The first through hole is used for the water supply pipe connected to the water inlet to pass through, and the second through hole is used for the water outlet pipe connected to the water outlet to pass through.

2. The brake of claim 1, wherein The brake also includes a first temperature sensor, which is disposed in the coolant flow channel and used to detect the temperature of the coolant in the coolant flow channel.

3. An air conditioning system, characterized by, The device includes a heater core, a water pump, a blower, and a brake as described in any one of claims 1-2. The outlet of the brake is connected to the inlet of the heater core, the outlet of the heater core is connected to the inlet of the brake, the blower is used to blow air onto the heater core, and the water pump is disposed between the outlet of the heater core and the inlet of the brake or between the outlet of the brake and the inlet of the heater core.

4. The air conditioning system of claim 3, wherein, The air conditioning system also includes a three-way valve and a heater. Port A of the three-way valve is connected to the outlet of the water pump, port B of the three-way valve is connected to the inlet of the brake, port C of the three-way valve is connected to the inlet of the heater, and the outlet of the heater is connected to the inlet of the warm air core.

5. The air conditioning system of claim 4, wherein, The brake also includes a first temperature sensor, which is disposed in the coolant flow channel and used to detect the temperature of the coolant in the coolant flow channel. The air conditioning system also includes a controller, which is electrically connected to the water pump, the blower, the three-way valve, the heater and the first temperature sensor. The controller is used for: In response to a crew cabin heating command, determine whether the temperature value detected by the first temperature sensor is greater than a first temperature threshold. When the temperature value detected by the first temperature sensor is greater than the first temperature threshold, the A port of the three-way valve is connected to the B port of the three-way valve, and the water pump and the blower are turned on, while the heater is turned off. When the temperature value detected by the first temperature sensor is less than the first temperature threshold, the A port of the three-way valve is connected to the C port of the three-way valve, and the water pump, the blower and the heater are turned on.

6. The air conditioning system of claim 5, wherein, The controller is also used for: In response to the crew cabin heating stop command, determine whether the temperature value detected by the first temperature sensor is greater than the second temperature threshold. When the temperature value detected by the first temperature sensor is greater than the second temperature threshold, the A port of the three-way valve is connected to the B port of the three-way valve, and the water pump is turned on while the blower is turned off.

7. A vehicle characterized by comprising: It includes the brake as described in any one of claims 1-2 or the air conditioning system as described in any one of claims 3-6.

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