A brake disc thermal management system
By using porous media and micropores to permeate coolant on the brake pads, the problem of high coolant consumption in the brake disc thermal management system is solved, achieving efficient and low-complexity heat management that is adaptable to various environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGDONG AEROSPACE SCI & TECH RES INST (NANSHA)
- Filing Date
- 2026-03-10
- Publication Date
- 2026-06-09
Smart Images
Figure CN122170183A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of brake discs, and in particular to a brake disc thermal management system. Background Technology
[0002] A brake disc, also known as a brake pad or disc, is a metal disc fixed to the wheel and rotating with it. When the driver presses the brake pedal, the brake caliper clamps the two sides of the brake disc. The friction between the brake pads and the brake disc slows down the vehicle, converting its kinetic energy into heat energy, thus achieving braking.
[0003] Under prolonged or high-intensity braking conditions, especially for large trucks and buses on long downhill sections, and for high-performance electric vehicles in scenarios involving frequent switching between regenerative braking and mechanical braking, a large amount of heat is generated between the brake disc and brake pads due to intense friction. If the heat cannot be dissipated in time, the brake disc temperature will rise sharply, causing the friction coefficient between the brake disc and brake pad materials to decrease significantly at high temperatures. This results in a decrease in braking torque and an increase in braking distance. At the same time, high temperatures will also accelerate thermal fatigue cracks, oxidation, and wear of the brake disc. Under high temperatures, the surface of the brake disc is prone to cracking and uneven wear.
[0004] Currently, a common practice is to establish a liquid circulation system to continuously spray coolant onto the brake disc surface for high-flow-rate cooling. While this method offers improved cooling intensity compared to air cooling, its core drawback lies in its extremely low water resource utilization efficiency, requiring the consumption and transport of large amounts of coolant. During long downhill stretches or continuous braking, coolant consumption is enormous, necessitating frequent replenishment. This not only increases the burden and operating costs but is also unsuitable for water-scarce environments. Furthermore, the complexity of the liquid cooling system's piping and the potential for leakage also affect its reliability. Summary of the Invention
[0005] In view of this, the purpose of the present invention is to provide a brake disc thermal management system that solves the problem of existing systems requiring a large amount of coolant to cool the brake disc.
[0006] To solve the above-mentioned technical problems, the technical solution used in this invention is as follows:
[0007] The brake disc thermal management system of the present invention includes:
[0008] Brake disc:
[0009] Brake caliper: The two ends of the brake caliper are respectively located on both sides of one end of the brake disc. The two ends of the brake caliper are used to brake or release the brake disc. The brake caliper includes a brake component. The brake component includes a control plate and a brake pad. The brake pad is installed on the side of the control plate near the brake disc. The brake pad is located on one side of the brake disc. A flow cavity is provided between the brake plate and the brake pad. The brake pad is a porous medium brake pad.
[0010] First cooling assembly: The first cooling assembly is mounted on the brake caliper and is used to drive coolant into the flow chamber.
[0011] Preferably, the brake caliper is provided with a start-up drive assembly for controlling the clamping or releasing of the brake caliper.
[0012] Preferably, the brake caliper further includes a brake insert, an oil reservoir, and a movable component. The brake insert is mounted between the two sides of the brake disc. One end of the oil reservoir is installed on the outer wall of the brake insert. One end of the movable component is slidably connected inside the oil reservoir. The other end of the movable component passes through the side wall of the brake insert and is connected to one side of the brake component. The start-up drive assembly is used to drive the movable component to move.
[0013] Preferably, the portion of the movable component located inside the oil reservoir divides the oil reservoir into a first oil reservoir and a second oil reservoir. The first oil reservoir is located at the end of the oil reservoir away from the brake insert, and the second oil reservoir is located at the end of the oil reservoir closer to the brake insert. The start-up drive assembly is used to deliver hydraulic oil into the first oil reservoir or the second oil reservoir.
[0014] Preferably, the first cooling assembly includes a liquid storage tank and a sliding member. One end of the liquid storage tank is installed on the outer wall of the brake insert. One end of the sliding member is slidably connected inside the liquid storage tank. The other end of the sliding member passes through the side wall of the brake insert and is connected to one side of the control plate. A flow channel is formed through the middle of the sliding member along its long side. The flow channel communicates with the cavity of the liquid storage tank. A flow groove is formed through the side wall of the control plate. The flow cavity, the flow groove, and the flow channel communicate with each other.
[0015] Preferably, the brake disc is provided with a second cooling assembly, which includes a coolant delivery unit and a porous medium strip. The porous medium strip is inserted into the brake disc. One end of the coolant delivery unit is connected to one end of the porous medium strip. The coolant delivery unit is used to deliver coolant to the porous medium strip. The end of the porous medium strip away from the coolant delivery unit is open to the outside.
[0016] Preferably, the coolant delivery unit includes a housing, the brake disc includes a friction part and a connecting part, the connecting part is fixed to the inner wall of the friction part, the porous medium strip is inserted into the friction part, the housing is movably sleeved on the outer wall of the connecting part, a liquid storage cavity is formed between the housing and the connecting part, a drainage channel is provided inside the connecting part, one end of the drainage channel communicates with the liquid storage cavity, and the other end of the drainage channel communicates with one end of the porous medium strip.
[0017] Preferably, sealing units are provided at both ends of the outer wall of the connecting part, the sealing units are located inside the liquid storage cavity, and the sealing units are used to seal the gap between the outer shell and the connecting part.
[0018] Preferably, the sealing unit includes a stationary ring and a rotating ring. The rotating ring is fixedly sleeved on the outer wall of the connecting part. The stationary ring is connected to the inner wall of the housing through a pin. The stationary ring can be finely adjusted in position. The stationary ring is located on the side of the rotating ring closer to the center of the housing. A first sealing ring is provided between the stationary ring and the inner wall of the housing, and a second sealing ring is provided between the rotating ring and the connecting part.
[0019] Preferably, an elastic element is installed between the two stationary rings.
[0020] The beneficial effects of this invention are as follows: When the vehicle is braking, the first cooling component drives the coolant into the flow chamber. The coolant seeps out along the micropores of the porous media brake pad to the friction interface. When the coolant flows in the micropores of the porous media brake pad, the coolant directly exchanges heat with the brake pad, taking away some of the heat from the brake pad in advance. The seeping coolant forms convection with the high-temperature flow field on the friction surface, directly taking away the heat from the brake pad. Afterward, the coolant evaporates under the high temperature of the friction surface, using the liquid phase change endothermic effect to cool the brake pad, thus achieving primary cooling of the brake pad.
[0021] Compared to existing technologies that spray large amounts of coolant onto the brake pads and brake discs, the contact time between the coolant and the friction surface during spraying is extremely short. The coolant can only absorb heat and rise slightly. Phase change requires continuous contact and absorption of a large amount of heat, making it difficult for phase change to occur during coolant spraying. Furthermore, only a very thin layer of water in contact with the friction surface participates in heat exchange, while most of the remaining water simply passes through the friction surface without absorbing any heat and is washed away, becoming ineffective water consumption. Direct coolant spraying is a single-stage convective heat exchange, with most of the water being carried away without participating in effective heat exchange, resulting in extremely low water utilization efficiency. In contrast, this application maximizes the cooling potential of every drop of water, thereby reducing coolant waste when cooling brake pads. Attached Figure Description
[0022] The above and other objects, features, and advantages of the invention will become clearer through a more detailed description of the preferred embodiments illustrated in the accompanying drawings. The same reference numerals denote the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of the invention.
[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.
[0024] Figure 2 This is a cross-sectional view of an embodiment of this application.
[0025] Figure 3 for Figure 2 A magnified view of A in the middle.
[0026] Figure 4 for Figure 2 A magnified view of B in the middle.
[0027] Figure 5 This is a cross-sectional view from another perspective of an embodiment of this application.
[0028] Figure 6 for Figure 5 A magnified view of C.
[0029] In the diagram: 1. Brake disc; 11. Friction part; 12. Connecting part; 2. Brake caliper; 21. Brake insert; 22. Brake unit; 221. Oil reservoir; 222. Moving plate; 223. Moving column; 224. First oil reservoir; 225. Second oil reservoir; 23. Brake component; 231. Control board; 232. Brake pad; 233. Flow chamber; 234. Drainage groove; 24. Sealing strip; 3. Starter drive assembly; 31. Connecting pipe; 32. 33. First oil guide pipe; 4. Second oil guide pipe; 5. First cooling assembly; 6. Liquid guide pipe; 7. Liquid storage tank; 8. Sliding component; 9. Flow channel; 10. Inlet pipe; 11. Second cooling assembly; 12. Outer shell; 13. Coolant pipe; 14. Sealing unit; 15. Dynamic ring; 16. Stationary ring; 17. Liquid storage chamber; 18. Spring; 19. First sealing ring; 20. Second sealing ring; 31. Flow channel; 42. Porous medium strip. Detailed Implementation
[0030] To facilitate understanding of the present invention, a more comprehensive description will be given below with reference to the accompanying drawings.
[0031] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0033] refer to Figures 1-5 The present invention provides a brake disc thermal management system, including a brake disc 1, a brake caliper 2, and a start-drive assembly 3 for controlling the clamping or loosening of the brake caliper 2. The two ends of the brake caliper 2 are respectively located on both sides of one end of the brake disc 1. The start-drive assembly 3 is connected to the brake caliper 2. When the vehicle needs to brake, the start-drive assembly 3 controls the two ends of the brake caliper 2 to move closer to each other. The two ends of the brake caliper 2 move closer to each other and contact the two sides of the brake disc 1. The two ends of the brake caliper 2 apply pressure to the two sides of the brake disc 1, and braking is achieved by the friction force generated by the contact surface between the brake caliper 2 and the brake disc 1.
[0034] Brake caliper 2 includes a brake insert 21 and a brake unit 22. The brake insert 21 is mounted between the top two sides of the brake disc 1. The brake unit 22 includes an oil reservoir 221, a moving part, and a brake element 23. One end of the oil reservoir 221 is fixed to the outer wall of the brake insert 21. The moving part includes a moving plate 222 and a moving post 223. The moving plate 222 is slidably connected inside the oil reservoir 221 and divides the cavity of the oil reservoir 221 into a first oil reservoir 224 and a second oil reservoir 225. The first oil reservoir 224 is located far from the oil reservoir 221. At one end of the brake insert 21, the second oil reservoir 225 is located near the end of the oil reservoir 221 close to the brake insert 21. One end of the moving column 223 moves through the side wall of the brake insert 21 and enters the second oil reservoir 225. One side of the moving plate 222 is fixed to one end of the moving column 223 located in the second oil reservoir 225. The brake component 23 is fixed at the end of the moving column 223 away from the moving plate 222. There are two brake units 22, which are installed on opposite sides of the brake insert 21. One end of the brake disc 1 is located between the two brake components 23.
[0035] The start-up drive assembly 3 includes a connecting pipe 31, a first oil guide pipe 32, and a second oil guide pipe 33. The two ends of the first oil guide pipe 32 are respectively inserted into the side of the two oil reservoirs 221 away from the brake component 23. The cavity of the first oil guide pipe 32 is connected to the two first oil reservoirs 224. One end of the connecting pipe 31 is inserted into the middle outer wall of the first oil guide pipe 32. There are two second oil guide pipes 33. The two second oil guide pipes 33 are respectively inserted into the outer wall of the oil reservoir 221 near the brake insert 21. The cavities of the two second oil guide pipes 33 are connected to the adjacent second oil reservoirs 225.
[0036] When the vehicle needs to brake, hydraulic oil enters the first guide pipe 32 through the cavity of the connecting pipe 31. Then, the hydraulic oil enters the two first reservoirs 224 from both ends of the first guide pipe 32. The hydraulic oil in the first reservoirs 224 pushes the moving plate 222 to move closer to the brake disc 1, thereby driving the moving column 223 and the brake component 23 connected to the moving column 223 to move. This causes the two brake components 23 to move closer to the brake disc 1 and press against both sides of the brake disc 1, thus achieving braking. When the brake is released, hydraulic oil enters the second reservoir 225 through the cavities of the two second guide pipes 33. The hydraulic oil in the second reservoir 225 squeezes the moving plate 222 to move away from the brake disc 1. At this time, the hydraulic oil in the first reservoir 224 is squeezed into the cavity of the first guide pipe 32 for backflow. The movement of the moving plate 222 drives the moving column 223 and the brake component 23 to move away from the brake disc, causing the two brake components 23 to move away from the brake disc, thus releasing the brake.
[0037] The brake caliper 2 is also provided with a first cooling component 4, which is located on one side of the start-up drive component 3. The first cooling component 4 includes a liquid guide pipe 41 and a cooling unit. The cooling unit includes a liquid storage tank 42 and a sliding member 43. One end of the liquid storage tank 42 is fixed to the outer wall of the brake insert 21. The connection method between the sliding member 43 and the liquid storage tank 42 is the same as the connection method between the moving member and the oil storage tank 221. In this embodiment, it will not be described in detail. The end of the sliding member 43 away from the liquid storage tank 42 is fixed to the side of the brake member 23, so that when the moving member drives the brake member 23 to move, the brake member 23 simultaneously drives the sliding member 43 to move. There are two cooling units, which are installed on opposite sides of the brake insert 21. The two ends of the liquid guide pipe 41 are respectively inserted into the ends of the two liquid storage tanks 42 away from the brake member 23. The cavity of the liquid guide pipe 41 is connected to the cavity of the liquid storage tank 42. An input pipe 44 is fixed to the outer wall of the middle part of the liquid guide pipe 41. A water pump is connected to the end of the input pipe 44 away from the liquid guide pipe 41.
[0038] The brake component 23 includes a control plate 231 and a brake pad 232. One end of the sliding component 43 and the moving component are fixed to one side of the control plate 231. The brake pad 232 is installed on the side of the control plate 231 away from the sliding component 43. The control plate 231 and the brake pad 232 are fixed together by bolts. The control plate 231 and the brake pad 232 are respectively provided with flow grooves in the middle of their respective sides. The two flow grooves are combined to form a flow cavity 233. The sliding component 43 is provided with a guide channel 431 through the middle of its long side. The guide channel 431 communicates with the cavity of the liquid storage tank 42. Correspondingly, the control plate 231 is provided with a diversion groove 234 through its side wall. The diversion groove 234 corresponds to the guide channel 431, so that the water in the liquid storage tank 42 can enter the flow cavity 233 through the guide channel 431 and the diversion groove 234. The brake pad 232 is a porous medium brake pad 232.
[0039] When the vehicle is braking, the water pump drives the water flow into the input pipe 44. The water flow enters the cavity of the guide pipe 41 along the input pipe 44. Then, the water flows from both ends of the guide pipe 41 into the cavities of the two storage tanks 42. The water then flows along the guide channel 431 and enters the flow cavity 233 through the guide groove 234. Finally, the water seeps out along the micropores of the porous media brake pad 232 to the friction interface. When the water flows in the micropores of the porous media brake pad 232, the water directly exchanges heat with the brake pad 232, carrying away some of the heat of the brake pad 232 in advance. The seeping water forms convection with the high-temperature flow field on the friction surface, directly carrying away the heat of the brake pad 232. Afterward, the water evaporates under the high temperature of the friction surface, using the liquid phase change endothermic effect to cool the brake pad 232, thus achieving the first-stage cooling of the brake pad 232.
[0040] Compared to existing technologies that spray large amounts of water onto the brake pads and brake discs, the contact time between the water and the friction surface during water spraying is extremely short. The water can only absorb heat and slightly increase its temperature. Phase change requires continuous contact and absorption of a large amount of heat. Therefore, phase change is difficult to occur during water spraying. Furthermore, only a very thin layer of water in contact with the friction surface participates in heat exchange. Most of the remaining water simply passes through the friction surface and is washed away without absorbing any heat, becoming ineffective water consumption. Direct water spraying is a single-stage convective heat exchange, and most of the water is carried away without participating in effective heat exchange, resulting in extremely low water utilization efficiency. In contrast, this application maximizes the cooling potential of every drop of water, thereby reducing water waste when cooling brake pads.
[0041] A sealing strip 24 is provided between the brake plate and the brake pad 232. The sealing strip 24 is arranged around the brake plate, which can improve the sealing between the brake plate and the brake pad 232 and reduce the leakage of water from the flow cavity 233 through the gap between the brake plate and the brake pad 232.
[0042] A second cooling assembly 5 is provided on the brake disc 1. The second cooling assembly 5 includes a coolant delivery unit, which includes a housing 51, a coolant pipe 52, and a sealing assembly. The brake disc 1 includes a friction part 11 and a connecting part 12. The friction part 11 is a ring structure. The connecting part 12 is fixed to the inner wall of the friction part 11 and protrudes outward relative to the friction part 11. The housing 51 is movably fitted onto the outer wall of the connecting part 12. The sealing assembly includes two sealing units 53, which are located at both ends of the connecting part 12. Each sealing unit 53 includes a moving ring 531 and a stationary ring 532. Two moving rings 531 are fixedly sleeved on both ends of the outer wall of the connecting part 12, and two stationary rings 532 are connected to both ends of the inner wall of the outer shell 51 by pins. The stationary rings 532 can be finely adjusted in position. The stationary rings 532 are located on the side of the moving rings 531 closer to the center of the outer shell 51. A liquid storage cavity 54 is formed between the inner wall of the outer shell 51, the outer wall of the connecting part 12 and the two stationary rings 532. One end of the coolant pipe 52 is inserted into the top of the outer wall of the outer shell 51. The cavity of the coolant pipe 52 is connected to the liquid storage cavity 54. The other end of the coolant pipe 52 is connected to the other output end of the water pump, so that water flows through the water pump into the cavity of the coolant pipe 52 and then into the liquid storage cavity 54.
[0043] The sealing assembly also includes an elastic element. In this embodiment, the elastic element is a spring 55. The spring 55 is sleeved on the outer wall of the connecting portion 12 and installed between two stationary rings 532. The spring 55 applies elastic force to the two stationary rings 532, pushing the two stationary rings 532 to press tightly against their adjacent moving rings 531, thereby improving the sealing performance between the moving rings 531 and the stationary rings 532 and reducing the leakage of water from the gap between the moving rings 531 and the stationary rings 532. The bottom of the moving ring 531 near the stationary ring 532 has a groove. Correspondingly, the stationary rings 531 have a groove at their bottom. A raised strip is fixed to the bottom of the ring 531 near the rotating ring 531. The raised strip is fitted into the groove to further reduce water leakage from the gap between the rotating ring 531 and the stationary ring 532. Correspondingly, a first sealing ring 56 is provided between the two stationary rings 532 and the inner wall of the outer shell 51 to reduce water leakage from the gap between the stationary rings 532 and the outer shell 51. A second sealing ring 57 is provided between the two rotating rings 531 and the connecting part 12 to reduce water leakage from the gap between the rotating ring 531 and the connecting part 12.
[0044] During vehicle operation, the brake disc 1 rotates, and the connecting part 12 drives the rotating ring 531 to rotate. The stationary ring 532 is connected to the outer shell 51, and the outer shell 51 prevents the stationary ring 532 from rotating, so that the stationary ring 532 does not rotate. During the rotation of the rotating ring 531, the spring 55 continuously applies force to the stationary ring 532, so that the stationary ring 532 remains in close contact with the rotating ring 531. Under the action of the sealing assembly, the sealing performance of the reservoir 54 can be improved, reducing the leakage of water from the reservoir 54.
[0045] The connecting part 12 has a guide groove inside, which corresponds to the liquid storage chamber 54. The connecting part 12 also has a guide groove inside, one end of which is connected to the guide groove, and the other end of which extends to the middle of the friction part 11. The guide groove and the guide groove form a flow channel 58. The friction part 11 has an installation groove in the middle, which is arranged along the diameter of the friction part 11. One end of the installation groove is connected to one end of the guide groove, and the other end of the installation groove is connected to the outside. The second cooling assembly 5 also includes a porous medium strip 59, which is installed in the installation groove. The outer side of the porous medium strip 59 smoothly transitions to the outer wall of the friction part 11. There are multiple porous medium strips 59, which are distributed around the friction part 11. Correspondingly, the number of flow channels 58 is adapted to the number of porous medium strips 59, and the flow channels 58 correspond one-to-one with the porous medium strips 59.
[0046] The reservoir 54 stores water. When the vehicle brakes, the water pump is started, and the water flows into the reservoir 54 through the coolant pipe 52. Then, the water flows through the guide channel and finally penetrates into the porous medium strip 59. It flows through the radial micropores to the outer wall of the porous medium strip 59. The water droplets on the outer wall of the porous medium strip 59 evaporate under the action of high temperature. The water flow in the porous medium strip 59 absorbs the heat of the friction part 11 to achieve secondary cooling of the brake disc 1.
[0047] The thermal management system of this application only needs to maintain an appropriate low-pressure drive for water flow. Due to the use of a microporous permeation mechanism, the fluid resistance is small and the required water pump power is extremely low, yet it can achieve a dual synergistic cooling effect. The primary cooling path and the secondary cooling path can operate independently or work together to ensure efficient thermal management of the braking system.
[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0049] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0050] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A brake disc thermal management system, characterized in that, include: Brake disc: Brake caliper: The two ends of the brake caliper are respectively located on both sides of one end of the brake disc. The two ends of the brake caliper are used to brake or release the brake disc. The brake caliper includes a brake component. The brake component includes a control plate and a brake pad. The brake pad is installed on the side of the control plate near the brake disc. The brake pad is located on one side of the brake disc. A flow cavity is provided between the brake plate and the brake pad. The brake pad is a porous medium brake pad. First cooling assembly: The first cooling assembly is mounted on the brake caliper and is used to drive coolant into the flow chamber.
2. The brake disc thermal management system as described in claim 1, characterized in that, The brake caliper is equipped with a start-up drive assembly for controlling the clamping or releasing of the brake caliper.
3. The brake disc thermal management system as described in claim 2, characterized in that, The brake caliper also includes a brake insert, an oil reservoir, and a movable component. The brake insert is mounted between the two sides of the brake disc. One end of the oil reservoir is installed on the outer wall of the brake insert. One end of the movable component is slidably connected inside the oil reservoir. The other end of the movable component passes through the side wall of the brake insert and is connected to one side of the brake component. The start-up drive assembly is used to drive the movable component to move.
4. The brake disc thermal management system as described in claim 3, characterized in that, The portion of the movable component located inside the oil reservoir divides the oil reservoir into a first oil reservoir and a second oil reservoir. The first oil reservoir is located at the end of the oil reservoir away from the brake insert, and the second oil reservoir is located at the end of the oil reservoir closer to the brake insert. The start-up drive assembly is used to deliver hydraulic oil into the first oil reservoir or the second oil reservoir.
5. The brake disc thermal management system as described in claim 3, characterized in that, The first cooling assembly includes a liquid storage tank and a sliding member. One end of the liquid storage tank is installed on the outer wall of the brake insert. One end of the sliding member is slidably connected inside the liquid storage tank. The other end of the sliding member passes through the side wall of the brake insert and is connected to one side of the control plate. A flow channel is formed through the middle of the sliding member along its long side. The flow channel communicates with the cavity of the liquid storage tank. A flow groove is formed through the side wall of the control plate. The flow cavity, the flow groove, and the flow channel communicate with each other.
6. The brake disc thermal management system as described in claim 1, characterized in that, The brake disc is provided with a second cooling assembly, which includes a coolant delivery unit and a porous medium strip. The porous medium strip is inserted into the brake disc. One end of the coolant delivery unit is connected to one end of the porous medium strip. The coolant delivery unit is used to deliver coolant to the porous medium strip. The end of the porous medium strip away from the coolant delivery unit is open to the outside.
7. The brake disc thermal management system as described in claim 6, characterized in that, The coolant delivery unit includes a housing, the brake disc includes a friction part and a connecting part, the connecting part is fixed to the inner wall of the friction part, the porous medium strip is inserted into the friction part, the housing is movably sleeved on the outer wall of the connecting part, a liquid storage cavity is formed between the housing and the connecting part, a drainage channel is provided inside the connecting part, one end of the drainage channel communicates with the liquid storage cavity, and the other end of the drainage channel communicates with one end of the porous medium strip.
8. The brake disc thermal management system as described in claim 7, characterized in that, Sealing units are provided at both ends of the outer wall of the connecting part. The sealing units are located inside the liquid storage cavity and are used to seal the gap between the outer shell and the connecting part.
9. The brake disc thermal management system as described in claim 8, characterized in that, The sealing unit includes a stationary ring and a rotating ring. The rotating ring is fixedly sleeved on the outer wall of the connecting part. The stationary ring is connected to the inner wall of the housing through a pin. The stationary ring can be finely adjusted in position. The stationary ring is located on the side of the rotating ring closer to the center of the housing. A first sealing ring is provided between the stationary ring and the inner wall of the housing, and a second sealing ring is provided between the rotating ring and the connecting part.
10. The brake disc thermal management system as described in claim 8, characterized in that, An elastic element is installed between the two stationary rings.