Braking devices, braking systems and vehicles

Abstract

This invention provides a braking device, a braking system, and a vehicle. The braking device includes: a pipe manifold and a brake disc. The pipe manifold has n independent flow chambers, where n is an even number greater than or equal to 4. The brake disc has a connecting hole in its center, arranged axially along the brake disc. The brake disc has n / 2 refrigerant flow channels inside, with the opening of each channel located on the wall of the connecting hole. The end of the pipe manifold is embedded in the connecting hole. The side wall of the pipe manifold within the connecting hole has n first flow holes, each corresponding to one of the openings of the refrigerant flow channels, and each of the n first flow holes corresponds to one of the n flow chambers. The side wall of the pipe manifold outside the connecting hole has n second flow holes, each corresponding to one of the n flow chambers. Applying the technical solution of this invention effectively solves the problem of poor heat dissipation in the braking systems of vehicles in the prior art.

Description

Technical Field

[0001] This invention relates to the field of transportation vehicles, and more specifically, to a braking device, a braking system, and a vehicle. Background Technology

[0002] Currently, with the upgrading of braking systems from traditional braking to ABS, and then from ABS to EBS, and further to ESC functionality, the national standard GB7258, "Technical Conditions for Safe Operation of Motor Vehicles," is constantly being updated. GB7258-2017 stipulates that all dedicated school buses and dangerous goods transport trucks, as well as the front wheels of other passenger vehicles longer than 9 meters, and all wheels of dangerous goods transport semi-trailers, three-axle flatbed and stake semi-trailers, should be equipped with disc brakes. Because disc brakes have higher heat dissipation efficiency and superior performance compared to drum brakes, disc brakes will become the mainstream in the future.

[0003] Although disc brakes are superior to drum brakes, axles using disc brakes are prone to high-temperature tire blowouts and fires due to the high temperatures, jeopardizing vehicle safety, cargo safety, and personal safety. Against this backdrop, a heat exchange system for trailer axle brakes and axle heads that can control high temperatures within a reasonable range during continuous long-distance braking is crucial for their normal operation.

[0004] Currently, there are roughly three ways in which heat is generated and dissipated through braking friction:

[0005] The first option is water cooling. Water spraying onto the brake discs can cause uneven temperature distribution and deformation, making water spraying unsuitable for disc brakes. Furthermore, water cooling is limited in icy areas of northern regions to prevent reduced friction and potential traffic accidents caused by icy or slippery roads.

[0006] The second type is air cooling; forced air cooling technology does not have much application space in open spaces, so the effect of air cooling on disc brakes is not good.

[0007] The third method uses a hydraulic retarder to reduce braking friction, but this structure makes the braking system very expensive. Summary of the Invention

[0008] The main objective of this invention is to provide a braking device, braking system, and vehicle to solve the problem of poor heat dissipation capacity in the braking system of vehicles in the prior art.

[0009] To achieve the above objectives, according to one aspect of the present invention, a braking device is provided, comprising: a pipeline manifold shaft having n independent flow chambers, wherein n is an even number greater than or equal to 4; a brake disc having a connecting hole arranged axially along the center of the brake disc, and n / 2 refrigerant flow channels arranged inside the brake disc, the opening of each refrigerant flow channel being located on the wall of the connecting hole; the end of the pipeline manifold shaft being embedded in the connecting hole; n first flow holes corresponding one-to-one with the openings of each refrigerant flow channel being provided on the side wall of the pipeline manifold shaft located inside the connecting hole, and the n first flow holes corresponding one-to-one with the n flow chambers; and n second flow holes corresponding one-to-one with the n flow chambers being provided on the side wall of the pipeline manifold shaft located outside the connecting hole.

[0010] In one embodiment, the pipeline manifold includes a hollow shaft with end faces and n / 2 intersecting partition walls disposed within the hollow shaft, the n / 2 partition walls dividing the cavity within the hollow shaft into n flow chambers.

[0011] In one embodiment, n second flow holes are arranged at axial intervals along the confluence axis of the pipeline.

[0012] In one embodiment, the refrigerant flow channel is arranged in a plane perpendicular to the axis of the brake disc. The refrigerant flow channel includes two parallel main heat dissipation channels, a transition channel connecting the two main heat dissipation channels, and two connecting channels connecting the free ends of the two main heat dissipation channels. The ports of the connecting channels form the channel openings of the refrigerant flow channel. The main heat dissipation channels include multiple interconnected curved sections.

[0013] In one embodiment, the refrigerant flow channel is coiled in a circumferential direction, and n / 2 refrigerant flow channels are arranged at intervals in the radial direction of the brake disc, and the main heat dissipation channel of each refrigerant flow channel has the same shape.

[0014] In one embodiment, the brake disc includes two plates arranged opposite each other, with refrigerant flow grooves provided on the end faces of the plates, and the refrigerant flow grooves of the two plates facing each other to form a refrigerant flow channel.

[0015] In one embodiment, an annular groove located on the outer side of the refrigerant flow groove is also provided on the end face of the plate. The annular grooves of the two plates are opposite each other to form a sealed mounting cavity. The braking device further includes a first sealing ring disposed in the sealed mounting cavity to seal the gap between the two plates.

[0016] In one embodiment, the two plates are fastened together by fasteners.

[0017] According to another aspect of the present invention, a braking system is provided, comprising: a support shaft, the support shaft being a hollow shaft; two braking devices, the braking devices being the aforementioned braking devices, a conduit shaft for the two braking devices extending into the support shaft from both ends of the support shaft, a bearing being provided between the support shaft and the conduit shaft, and a brake disc of the braking device being connected to the inner ring of the bearing; and a brake caliper having a clamping state for clamping the brake disc and a releasing state for releasing the brake disc.

[0018] In one embodiment, each braking device has n independent annular chambers between its pipeline manifold and support shaft. The sidewalls of the pipeline manifold and the support shaft form the walls of the annular chambers. All the second flow holes of each pipeline manifold correspond to different annular chambers on the same side of the support shaft, so that the n annular chambers on the same side form n / 2 sets of liquid exchange chambers. The braking system also includes n / 2 circulating heat dissipation mechanisms. Each circulating heat dissipation mechanism includes a circulating pipeline, a circulating pump disposed on the circulating pipeline, and a radiator disposed on the circulating pipeline. The circulating pipeline connects the two sets of liquid exchange chambers on both sides of the support shaft, and the circulating pipelines of each circulating heat dissipation mechanism are not interconnected.

[0019] In one embodiment, a third flow hole is provided at the top of both ends of the support shaft, and the third flow hole is connected to one of the n annular chambers on one side of the support shaft.

[0020] In one embodiment, two annular chambers located at both ends of the n annular chambers on any side of the support shaft form a group of liquid exchange chambers, and the third flow hole communicates with one of the annular chambers in this group of liquid exchange chambers.

[0021] In one embodiment, a replenishment port is provided on the circulation pipeline connected to the third flow hole.

[0022] In one embodiment, the inner walls at both ends of the support shaft are provided with n annular ribs and a partition, and each annular rib is sealed to its corresponding pipeline assembly shaft by a second sealing ring.

[0023] In one embodiment, in the multiple refrigerant flow channels of the braking device, liquids with different specific heat capacities are circulated through the flow chamber of the corresponding pipeline collection shaft, the corresponding annular chamber, and the corresponding circulating heat dissipation mechanism, and the boiling point of the liquid with the smaller specific heat capacity is greater than that of the liquid with the larger specific heat capacity.

[0024] According to another aspect of the present invention, a vehicle is provided, comprising: a vehicle body; and a braking system disposed on the vehicle body, wherein the braking system is the braking system described above.

[0025] According to a final aspect of the present invention, a vehicle is provided, comprising: a vehicle body; a braking system disposed on the vehicle body, the braking system being the aforementioned braking system; and a water tank disposed on the vehicle body, the water tank being connected to the inlet of a circulation pipe of a circulation cooling mechanism of the braking system, wherein liquid in the water tank flows into the circulation pipe through the inlet under negative pressure.

[0026] Applying the technical solution of this invention, during use, low-temperature refrigerant is injected into multiple corresponding flow cavities through multiple second flow holes, so that the refrigerant is injected into multiple refrigerant flow channels corresponding to the flow cavities. Then, the multiple refrigerant flow channels absorb the heat of the brake disc to cool the brake disc. The high-temperature refrigerant after absorbing heat is then discharged through the remaining flow cavities and finally flows out from the remaining second flow holes. Using the above structure to dissipate heat from the braking system has the following advantages: First, it will not cause brake disc deformation; second, it is not limited by the environment and is suitable for cold northern regions; third, it has a good cooling effect when used in open spaces; fourth, it is low in cost. In addition, more importantly, when applying the technical solution of this invention, in actual use, at least two of the multiple refrigerant flow channels need to be filled with liquid conductive media with different specific heat capacities (i.e., one refrigerant flow channel is filled with a first liquid conductive medium with a larger specific heat capacity, and the other refrigerant flow channel is filled with a second liquid conductive medium with a smaller specific heat capacity, the boiling point of the second liquid conductive medium being greater than that of the first liquid conductive medium). Choosing liquids with different specific heat capacities primarily aims to transfer heat from high-temperature areas to low-temperature areas, thereby effectively cooling the system. Furthermore, during normal braking or continuous small-amplitude braking, both the first and second liquid conductive media can absorb heat together, achieving a good cooling effect. During emergency braking or continuous large-amplitude braking, the disc brake rapidly generates high temperatures exceeding the boiling point of the first liquid conductive media. While the first liquid conductive media vaporizes, the second liquid conductive media remains liquid and continues to absorb heat effectively, ensuring the cooling effect.

[0027] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0028] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0029] Figure 1 A side view schematic diagram of an embodiment of the braking device according to the present invention is shown;

[0030] Figure 2 It shows Figure 1 A schematic cross-sectional view of the braking device from the MM direction;

[0031] Figure 3 It shows Figure 2 An enlarged structural diagram of the braking device at point A;

[0032] Figure 4 It shows Figure 1 A side view of one of the brake disc plates of the braking device;

[0033] Figure 5 It shows Figure 4 A magnified structural diagram of point B on the sheet body;

[0034] Figure 6 It shows Figure 1 A side view of another piece of the brake disc of the braking device;

[0035] Figure 7 A front view schematic diagram of the braking system according to the present invention is shown;

[0036] Figure 8 It shows Figure 7 A partially enlarged longitudinal section view of the braking system; and

[0037] Figure 9 It shows Figure 7 A cross-sectional view of the braking system along the JJ direction.

[0038] The above figures include the following reference numerals:

[0039] 1. Annular chamber; 2. Liquid exchange chamber; 10. Pipeline manifold shaft; 11. Flow chamber; 12. Second flow hole; 13. Hollow shaft; 14. Partition wall; 15. First flow hole; 20. Brake disc; 21. Refrigerant flow channel; 211. Main heat dissipation channel; 212. Transition channel; 213. Connecting channel; 214. Refrigerant flow groove; 22. Plate; 221. Annular groove; 23. Connecting hole; 40. Support shaft; 41. Third flow hole; 60. Braking device; 70. Circulating heat dissipation mechanism; 71. Circulating pipeline; 72. Circulating pump; 73. Radiator; 80. First sealing ring; 90. Fastener; 100. Annular rib; 110. Partition plate; 120. Second sealing ring. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] like Figures 1 to 9 As shown, the braking device of this embodiment includes a pipeline manifold 10 and a brake disc 20. The pipeline manifold 10 has four independent flow chambers 11. The brake disc 20 has a connecting hole 23 arranged axially along its center. The brake disc 20 has two refrigerant flow channels 21 inside, with the opening of each channel located on the wall of the connecting hole 23. The end of the pipeline manifold 10 is embedded in the connecting hole 23. Four first flow holes 15, corresponding one-to-one with the openings of each refrigerant flow channel 21, are provided on the side wall of the pipeline manifold 10 within the connecting hole 23. Each of the four first flow holes 15 corresponds to one of the four flow chambers 11. Four second flow holes 12, corresponding one-to-one with the four flow chambers 11, are provided on the side wall of the pipeline manifold 10 outside the connecting hole 23.

[0045] Applying the technical solution of this embodiment, during use, low-temperature refrigerant is injected into the two corresponding flow chambers 11 through the two second flow holes 12, so that the refrigerant is injected into the two refrigerant flow channels 21 corresponding to the flow chambers 11. Then, the two refrigerant flow channels 21 absorb the heat of the brake disc 20 to cool it down. The high-temperature refrigerant after absorbing heat is then discharged through the remaining two flow chambers 11 and finally flows out from the remaining two second flow holes 12. Using the above structure to dissipate heat from the braking system has the following advantages: First, it will not cause deformation of the brake disc 20; second, it is not limited by the environment and is suitable for cold northern regions; third, it has a good cooling effect when used in open spaces; fourth, it is low in cost. Furthermore, and more importantly, in practical use, the two refrigerant flow channels 21 need to be filled with liquid conductive media of different specific heat capacities (i.e., one refrigerant flow channel 21 is filled with a first liquid conductive medium with a larger specific heat capacity, and the other refrigerant flow channel 21 is filled with a second liquid conductive medium with a smaller specific heat capacity, the boiling point of the second liquid conductive medium being greater than that of the first liquid conductive medium). Selecting liquids with different specific heat capacities is mainly to achieve the purpose of diverting heat from high-temperature areas to low-temperature areas, thereby effectively cooling the system. In addition, when the braking system is braking normally or continuously with small-amplitude braking, the first and second liquid conductive media can absorb heat together, thus achieving a better cooling effect. During emergency braking or continuous large-amplitude braking, due to the violent braking action, the disc brake rapidly generates high temperatures exceeding the boiling point of the first liquid conductive medium. At this time, although the first liquid conductive medium vaporizes, the second liquid conductive medium remains liquid and can still play a good heat absorption role, ensuring the cooling effect.

[0046] The following details the effects of injecting liquids with different specific heat capacities into the two refrigerant flow channels 21:

[0047] One refrigerant flow channel 21 (hereinafter referred to as the first refrigerant flow channel) is located near the center of the brake disc 20 and is filled with a second conductive medium. The other refrigerant flow channel (hereinafter referred to as the second refrigerant flow channel) is located near the edge of the brake disc 20 and is filled with the first conductive medium. When the braking system is working, due to the lower specific heat capacity of the second conductive medium, the temperature in the central area where the second refrigerant flow channel is located is high. The temperature in the edge area where the first refrigerant flow channel is located is low because the specific heat capacity of the first conductive medium is higher. In this way, the heat in the central area is directed to the edge area. Furthermore, because the first conductive medium has a higher specific heat capacity, it heats up slowly. As the first conductive medium flows, it can quickly carry away the heat from the edge area, thereby ensuring a cooling effect.

[0048] It should be noted that in other embodiments not shown in the figure, the number of flow cavities 11 can be an even number greater than 4.

[0049] like Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, in this embodiment, the pipeline manifold 10 includes a hollow shaft 13 with an end face and two intersecting partition walls 14 disposed within the hollow shaft 13. The two partition walls 14 divide the cavity within the hollow shaft 13 into four flow chambers 11. The above structure is simple and easy to manufacture.

[0050] In this embodiment, four second flow holes 12 are arranged at axial intervals along the pipeline converging shaft 10. The above structure is simple and easy to manufacture.

[0051] like Figure 4 and Figure 6 As shown, in this embodiment, the refrigerant flow channel 21 is arranged in a plane perpendicular to the axis of the brake disc 20. The refrigerant flow channel 21 includes two parallel main heat dissipation channels 211, a transition channel 212 connecting the two main heat dissipation channels 211, and two connecting channels 213 connecting the free ends of the two main heat dissipation channels 211. The ports of the connecting channels 213 form the openings of the refrigerant flow channel 21. The main heat dissipation channels 211 include multiple interconnected curved sections. This structure maximizes the length of the refrigerant flow channel 21, thereby improving its heat absorption capacity and effectively controlling the temperature of the braking system.

[0052] like Figure 4 and Figure 6 As shown, in this embodiment, the refrigerant flow channel 21 is coiled around the circumference, and the two refrigerant flow channels 21 are arranged at intervals along the radial direction of the brake disc 20, and the main heat dissipation channel 211 of each refrigerant flow channel 21 has the same shape. This structure makes the arrangement of the two refrigerant flow channels 21 reasonable, maximizing the length of each refrigerant flow channel 21, improving heat absorption capacity, and effectively controlling the temperature of the braking system. It should be noted that the refrigerant flow channel 21 located on the outer ring is filled with pure water, while the refrigerant flow channel 21 located on the inner ring is filled with a mixed water solution (e.g., ethylene glycol, industrial salts, glycerin solution, with a boiling point greater than 150°C).

[0053] like Figure 2 , Figure 4 , Figures 6 to 8 As shown, in this embodiment, the brake disc 20 includes two opposing plates 22. A refrigerant flow groove 214 is provided on the end face of each plate 22, and the refrigerant flow grooves 214 of the two plates 22 are opposite each other to form a refrigerant flow channel 21. This structure is simple and easy to manufacture. Of course, in other embodiments not shown in the figure, the brake disc can also be a one-piece molded structure, with the refrigerant flow groove 214 located in wax. When heated, the wax melts and flows out, forming the refrigerant flow groove 214.

[0054] like Figure 2 , Figure 4 and Figure 6 As shown, in this embodiment, an annular groove 221 located circumferentially outward of the refrigerant flow channel 214 is also provided on the end face of the plate 22. The annular grooves 221 of the two plates 22 face each other to form a sealed mounting cavity. The braking device also includes a first sealing ring 80, which is disposed in the sealed mounting cavity to seal the gap between the two plates 22. The above structure can prevent the refrigerant in the refrigerant flow channel 214 from flowing out through the gap between the two plates 22, thus preventing refrigerant loss.

[0055] like Figure 1 , Figure 4 and Figure 6 As shown, in this embodiment, the two plates 22 are fastened together by fasteners 90. The above structure is simple, easy to install, and highly reliable.

[0056] In this embodiment, the four flow chambers 11 are respectively the first flow chamber, the second flow chamber, the third flow chamber, and the fourth flow chamber, and the two refrigerant flow channels 21 are respectively the first refrigerant flow channel and the second refrigerant flow channel. The two ports of the first refrigerant flow channel are respectively connected to the first flow chamber and the second flow chamber, and the two ports of the second refrigerant flow channel are respectively connected to the third flow chamber and the fourth flow chamber. The first refrigerant flow channel is filled with a first liquid conductive medium, and the second refrigerant flow channel is filled with a second liquid conductive medium.

[0057] like Figures 7 to 9 As shown, this application also provides a braking system. An embodiment of the braking system according to this application includes: a support shaft 40, two braking devices 60, and a brake caliper. The support shaft 40 is a hollow shaft; the braking devices 60 are the aforementioned braking devices, with the confluence shaft 10 of the two braking devices 60 extending into the support shaft 40 from both ends. A bearing is provided between the support shaft 40 and the confluence shaft 10, and the brake disc 20 of the braking device 60 is connected to the inner ring of the bearing. The brake caliper has a clamped state that clamps the brake disc 20 of the braking device 60 and a released state that releases the braking device 60. The aforementioned braking device 60 has the following advantages: First, it will not cause deformation of the brake disc 20; second, it is not limited by the environment and is suitable for cold northern regions; third, it has good cooling effect when used in open spaces; fourth, it has low cost; fifth, regardless of normal braking, continuous small-amplitude braking, emergency braking, or continuous large-amplitude braking, the refrigerant flow channel 21 can effectively absorb the heat generated by the braking mechanism, thereby reducing the temperature rise of the braking mechanism and ensuring safety. Therefore, braking systems with these features also possess the aforementioned advantages.

[0058] like Figures 7 to 9As shown, in this embodiment, each braking device 60 has four independent annular chambers 1 between its pipe confluence shaft 10 and support shaft 40. The sidewalls of the pipe confluence shaft 10 and the support shaft 40 form the walls of the annular chambers 1. All the second flow holes 12 of each pipe confluence shaft 10 correspond to different annular chambers 1 on the same side of the support shaft 40, so that the four annular chambers 1 on the same side form two sets of liquid exchange chambers 2. The braking system also includes two circulating cooling mechanisms 70. Each circulating cooling mechanism 70 includes a circulating pipe 71, a circulating pump 72 disposed on the circulating pipe 71, and a radiator 73 disposed on the circulating pipe 71. The circulating pipe 71 connects the two sets of liquid exchange chambers 2 on both sides of the support shaft 40, and the circulating pipes 71 of each circulating cooling mechanism 70 are not interconnected. In the above structure, the high-temperature refrigerant discharged from the braking device 60 can be cooled by the radiator and then become a low-temperature refrigerant that is recirculated into the braking device 60, so that the braking device 60 can continuously cool the brake disc 20, thereby ensuring the heat dissipation effect. In addition, the refrigerant flow channels 21 in the two braking devices 60 that carry the same refrigerant are pumped out and cooled by the same circulating heat dissipation mechanism 70, which can effectively reduce the number of parts in the braking system and reduce production costs.

[0059] Specifically, in this embodiment, the four second flow holes 12 are respectively the first through hole, the second through hole, the third through hole, and the fourth through hole corresponding to the first flow cavity, the second flow cavity, the third flow cavity, and the fourth flow cavity. The four annular chambers 1 are respectively the first annular chamber, the second annular chamber, the third annular chamber, and the fourth annular chamber. The first annular chamber corresponds to the first through hole, the second annular chamber corresponds to the second through hole, the third annular chamber corresponds to the third through hole, and the fourth annular chamber corresponds to the fourth through hole. The first annular chamber and the fourth annular chamber form a first liquid exchange chamber, and the second annular chamber and the third annular chamber form a second liquid exchange chamber. The circulating heat dissipation mechanism 70 includes a first circulating heat dissipation mechanism connecting the first liquid exchange chambers on the left and right sides of the braking system and a second circulating heat dissipation mechanism connecting the second liquid exchange chambers on the left and right sides of the braking system.

[0060] The following is a brief introduction to the heat dissipation process:

[0061] In use, the first liquid conduction medium sequentially passes through the circulation pump 72 of the first circulating heat dissipation mechanism, the fourth annular chamber on the left, the fourth through hole on the left, the fourth flow chamber on the left, the first refrigerant flow channel on the left, the first flow chamber on the left, the first through hole on the left, the first annular chamber on the left, the radiator 73 of the first circulating heat dissipation mechanism, the fourth annular chamber on the right, the fourth through hole on the right, the fourth flow chamber on the right, the first refrigerant flow channel on the right, the first flow chamber on the right, the first through hole on the right, the first annular chamber on the right, the radiator 73 of the first circulating heat dissipation mechanism, and finally returns to the circulation pump 72, thus circulating. The second liquid conduction medium sequentially passes through the circulation pump 72 of the second circulating heat dissipation mechanism, the third annular chamber on the left, the third through hole on the left, the third flow chamber on the left, the second refrigerant flow channel on the left, the second flow chamber on the left, the second through hole on the left, the second annular chamber on the left, the radiator 73 of the second circulating heat dissipation mechanism, the third annular chamber on the right, the third through hole on the right, the third flow chamber on the right, the second refrigerant flow channel on the right, the second flow chamber on the right, the second through hole on the right, the second annular chamber on the right, the radiator 73 of the second circulating heat dissipation mechanism, and finally returns to the circulation pump 72, thus circulating. It should be noted that the radiator of the first circulating heat dissipation mechanism and the radiator of the second circulating heat dissipation mechanism can be the same radiator or different radiators. The radiator adopts a parallel flow radiator, in which heat is dissipated into the air through convection and the action of the cooling motor.

[0062] During emergency braking or sustained, sharp braking, the disc brake rapidly generates high temperatures due to the violent braking action. These temperatures exceed the boiling point of the first liquid conduction medium, causing it to vaporize. This vapor lock in the lines may affect circulation. To address this issue, such as... Figure 7 and Figure 8 As shown, in this embodiment, a third flow-through hole 41 is provided at the top of both ends of the support shaft 40, and the third flow-through hole 41 is connected to one of the four annular chambers 1 on one side of the support shaft 40. It should be noted that the annular chamber 1 corresponding to the third flow-through hole 41 should be filled with a first liquid conductive medium. In this way, once the first liquid conductive medium vaporizes, the gas will be ejected through the third flow-through hole 41, preventing gas lock phenomenon.

[0063] like Figure 7 and Figure 8As shown, in this embodiment, two annular chambers 1 at both ends of the four annular chambers 1 on any side of the support shaft 40 form a group of liquid exchange chambers 2, and the third flow hole 41 communicates with one of the annular chambers 1 in this group of liquid exchange chambers 2. Specifically, in this embodiment, the first annular chamber, the second annular chamber, the third annular chamber, and the fourth annular chamber are arranged sequentially along the axial direction of the support shaft 40, and the third flow hole 41 communicates with the first annular chamber. The first and fourth annular chambers are filled with a first liquid conduction medium, and the second and third annular chambers are filled with a second liquid conduction medium. The above arrangement prevents the first liquid conduction medium from forming a gaseous state in the cross-flow management, and it can only be effectively vaporized at the location of the third flow hole 41.

[0064] Since some of the first liquid conduction medium will vaporize and be discharged from the braking system, in order to replenish the first liquid conduction medium, in this embodiment, a liquid replenishment port is provided on the circulation pipeline 71 connected to the third flow hole 41.

[0065] like Figure 8 and Figure 9 As shown, in this embodiment, the inner walls at both ends of the support shaft 40 are provided with four annular ribs 100 and a partition 110. Each annular rib 100 is sealed to its corresponding pipeline assembly shaft 10 by a second sealing ring 120. The above structure is simple and can effectively separate multiple annular chambers 1, preventing the first liquid conduction medium and the second liquid conduction medium from mixing.

[0066] This application also provides a vehicle, an embodiment of which (not shown in the figures) includes a vehicle body and a braking system, wherein the braking system is the aforementioned braking system. Because the aforementioned braking system has the advantage of low temperature rise, the vehicle equipped with this braking system has high safety.

[0067] In this embodiment, the vehicle also includes a water tank, which is mounted on the vehicle body. The water tank is connected to the replenishment port of the circulation pipe 71 of the braking system's circulating cooling mechanism 70. Under negative pressure, the liquid in the water tank flows into the circulation pipe 71 through the replenishment port. This structure allows the first liquid conduction medium to be automatically replenished by negative pressure, eliminating the need for manual intervention or additional pumps, thereby reducing production costs.

[0068] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0069] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0070] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A braking device, characterized in that, include: Pipeline manifold (10), wherein the pipeline manifold (10) has n independent flow chambers (11), where n is an even number greater than or equal to 4; A brake disc (20) is provided in the middle of which a connecting hole (23) is provided along the axial direction of the brake disc (20). The brake disc (20) is provided with n / 2 refrigerant flow channels (21). The opening of each refrigerant flow channel (21) is located on the wall of the connecting hole (23). The end of the pipeline assembly shaft (10) is embedded in the connecting hole (23). The side wall of the pipeline assembly shaft (10) located in the connecting hole (23) is provided with n first flow holes (15) corresponding to the openings of each refrigerant flow channel (21). The n first flow holes (15) correspond to the n flow cavities (11). The side wall of the pipeline assembly shaft (10) located outside the connecting hole (23) is provided with n second flow holes (12) corresponding to the n flow cavities (11). The brake disc (20) includes two plates (22) arranged opposite to each other. A refrigerant flow groove (214) is provided on the end face of the plate (22). The refrigerant flow grooves (214) of the two plates (22) are opposite to each other to form the refrigerant flow channel (21). At least two of the n / 2 refrigerant flow channels (21) need to be filled with liquid conductive media with different specific heat capacities. The refrigerant flow channel (21) near the center of the brake disc (20) is filled with a second conductive medium, and the refrigerant flow channel (21) near the edge of the brake disc (20) is filled with a first conductive medium. The specific heat capacity of the second conductive medium is less than that of the first conductive medium, and the boiling point of the second conductive medium is greater than that of the first conductive medium.

2. The braking device according to claim 1, characterized in that, The pipeline converging shaft (10) includes a hollow shaft (13) with an end face and n / 2 intersecting partition walls (14) disposed within the hollow shaft (13), the n / 2 partition walls (14) dividing the cavity within the hollow shaft (13) into n flow chambers (11).

3. The braking device according to claim 2, characterized in that, n second flow holes (12) are arranged at axial intervals along the pipeline converging axis (10).

4. The braking device according to claim 3, characterized in that, The refrigerant flow channel (21) is arranged in a plane perpendicular to the axis of the brake disc (20). The refrigerant flow channel (21) includes two parallel heat dissipation main channels (211), a transition channel (212) connecting the two heat dissipation main channels (211), and two connecting channels (213) connecting the free ends of the two heat dissipation main channels (211). The port of the connecting channel (213) forms the channel opening of the refrigerant flow channel (21). The heat dissipation main channel (211) includes multiple interconnected curved sections.

5. The braking device according to claim 4, characterized in that, The refrigerant flow channel (21) is coiled in the circumferential direction, and n / 2 of the refrigerant flow channels (21) are arranged at intervals in the radial direction of the brake disc (20), and the heat dissipation main channel (211) of each refrigerant flow channel (21) has the same shape.

6. The braking device according to claim 1, characterized in that, The end face of the plate (22) is also provided with an annular groove (221) located on the outer side of the refrigerant flow groove (214). The annular grooves (221) of the two plates (22) are opposite to each other to form a sealed mounting cavity. The braking device also includes: A first sealing ring (80) is disposed in the sealing mounting cavity to seal the gap between the two pieces (22).

7. The braking device according to claim 1, characterized in that, The two pieces (22) are fastened together by fasteners (90).

8. A braking system, characterized in that, include: Support shaft (40), wherein the support shaft (40) is a hollow shaft; Two braking devices (60), wherein the braking device (60) is any one of the braking devices according to claims 1 to 7, wherein the pipeline converging shaft (10) of the two braking devices (60) extends into the support shaft (40) from both ends of the support shaft (40), wherein a bearing is provided between the support shaft (40) and the pipeline converging shaft (10), and the brake disc (20) of the braking device (60) is connected to the inner ring of the bearing; The brake caliper has a clamped state that clamps the brake disc (20) and a released state that releases the brake disc (20).

9. The braking system according to claim 8, characterized in that, Each of the braking devices (60) has n independent annular chambers (1) between its conduit shaft (10) and the support shaft (40). The sidewalls of the conduit shaft (10) and the support shaft (40) form the walls of the annular chambers (1). All the second flow holes (12) of each conduit shaft (10) correspond to different annular chambers (1) on the same side of the support shaft (40), so that the n annular chambers (1) on the same side form n / 2 groups of liquid exchange chambers (2). The braking system also includes: n / 2 circulating heat dissipation mechanisms (70), each of the circulating heat dissipation mechanisms (70) includes a circulating pipe (71), a circulating pump (72) disposed on the circulating pipe (71), and a radiator (73) disposed on the circulating pipe (71). The circulating pipe (71) connects the two sets of liquid exchange chambers (2) on both sides of the support shaft (40), and the circulating pipes (71) of each of the circulating heat dissipation mechanisms (70) are not connected to each other.

10. The braking system according to claim 9, characterized in that, The top of both ends of the support shaft (40) is provided with a third flow hole (41), and the third flow hole (41) is connected to one of the n annular chambers (1) on one side of the support shaft (40).

11. The braking system according to claim 10, characterized in that, Two of the n annular chambers (1) on either side of the support shaft (40) form a group of liquid exchange chambers (2), and the third flow hole (41) is connected to one of the annular chambers (1) in the group of liquid exchange chambers (2).

12. The braking system according to claim 10, characterized in that, A liquid replenishment port is provided on the circulation pipeline (71) that is connected to the third flow hole (41).

13. The braking system according to claim 9, characterized in that, The inner walls at both ends of the support shaft (40) are provided with n annular ribs (100) and a partition (110). Each annular rib (100) is sealed to its corresponding pipeline collection shaft (10) by a second sealing ring (120).

14. A vehicle comprising: The vehicle body; A braking system, disposed on the vehicle body, characterized in that the braking system is the braking system according to any one of claims 8 to 13.

15. A vehicle comprising: The vehicle body; A braking system, disposed on the vehicle body, characterized in that the braking system is the braking system as described in claim 12; A water tank is installed on the vehicle body. The water tank is connected to the liquid inlet of the circulation pipe (71) of the circulation cooling mechanism (70) of the braking system. Under the action of negative pressure, the liquid in the water tank flows into the circulation pipe (71) through the liquid inlet.

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