Cooling pipeline, motor and automobile
By designing a cooling pipeline in the motor housing, the coolant flows along the surrounding section and flows out from both ends of the pipeline, the simultaneous cooling of both ends of the motor is solved, and the operating performance of the motor is improved.
Patent Information
- Application Number
- CN202421695753.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-17
AI Technical Summary
In the existing motor cooling scheme, after the coolant is heat exchanged with the stator and winding of the motor, the temperature rises, resulting in uneven heat dissipation at both ends of the motor, affecting the operating performance of the motor.
A cooling pipeline is designed. By providing the first and second pipelines in the motor housing and first and second branch pipelines above it, the coolant enters the branch pipeline through the first pipeline, flows along the surrounding section and flows out of the second pipeline, and achieves simultaneous cooling of both ends of the motor.
By cooling both ends of the motor simultaneously, the problem of uneven heat dissipation caused by the increase in the coolant temperature is solved, and the operating performance of the motor is improved.
Smart Images
Figure CN223039776U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of motor thermal management, and specifically relates to cooling pipelines, motors, and automobiles. Background Art
[0002] When a motor is operating, a large amount of heat is generated in the stator and windings of the motor. If the stator and windings are not cooled, this will lead to a decrease in motor efficiency, and in severe cases, it will cause the motor to burn out. In existing solutions, a spiral single-channel cooling solution is usually adopted, that is, the coolant flows in from one end and out from the other end. Since the coolant absorbs the heat of the stator or windings during the flow process, the temperature of the coolant near the outflow end is higher than that of the coolant at the inflow end, resulting in uneven heat dissipation at both ends of the motor and affecting the operating performance of the motor. Summary of the Utility Model
[0003] An object of the present invention of this application is to provide a cooling pipeline, which cools both ends of the motor simultaneously during the process of cooling the motor, thereby solving the problem of uneven heat dissipation at both ends of the motor caused by the increase in the temperature of the coolant after heat exchange with the stator and windings in the motor in the existing solution.
[0004] Another object of the present invention of this application is to provide a motor, which includes the above-mentioned cooling pipeline.
[0005] Another object of the present invention of this application is to provide an automobile, which includes the above-mentioned motor.
[0006] According to an embodiment of this application, in the first aspect, a cooling pipeline is provided. The cooling pipeline is arranged inside a motor housing, and the cooling pipeline includes:
[0007] A first pipeline and a second pipeline. The first pipeline is located on the lower side, and the second pipeline is located above the first pipeline. Both the first pipeline and the second pipeline are available for the coolant to flow through;
[0008] A first branch pipeline, which includes a first surrounding section. The first surrounding section surrounds and rises towards the second pipeline. One end of the first branch pipeline close to the end where the coolant flows into the first surrounding section is communicated with the first pipeline, and the end close to the end where the coolant flows out of the first surrounding section is communicated with the second pipeline;
[0009] The second branch pipeline, the second branch pipeline is located above the first branch pipeline, the second branch pipeline includes a second surrounding section, the second surrounding section surrounds and descends towards the first pipeline, one end of the second branch pipeline close to the coolant flowing into the second surrounding section is communicated with the first pipeline, and one end close to the coolant flowing out of the second surrounding section is communicated with the second pipeline.
[0010] In one embodiment, the first surrounding section includes a plurality of first annular parts and a plurality of first turning parts, the plurality of first annular parts are arranged from the side close to the first pipeline to the side close to the second pipeline, the first turning part is arranged at one end of two adjacent first annular parts, and the first turning part communicates the two adjacent first annular parts.
[0011] In one embodiment, the second surrounding section includes a plurality of second annular parts and a plurality of second turning parts, the plurality of second annular parts are arranged from the side close to the second pipeline to the side close to the first pipeline, the second turning part is arranged at one end of two adjacent second annular parts, and the second turning part communicates the two adjacent second annular parts.
[0012] In one embodiment, the diameter dimension of the first annular part is the same as the diameter dimension of the second annular part.
[0013] In one embodiment, variable cross-section flow channels are formed in both the first branch pipeline and the second branch pipeline, and the variable cross-section flow channels respectively narrow the flow channels in the first branch pipeline and the flow channels in the second branch pipeline.
[0014] In one embodiment, a baffle structure is arranged in the first branch pipeline and the second branch pipeline, and the baffle structure forms the variable cross-section flow channels in the first branch pipeline and the second branch pipeline respectively.
[0015] In one embodiment, through grooves are arranged in both the first branch pipeline and the second branch pipeline, the inner wall of the groove forms the variable cross-section flow channel with the pipe wall of the first branch pipeline, and the inner wall of the groove forms the variable cross-section flow channel with the pipe wall of the second branch pipeline.
[0016] In one embodiment, the groove is elliptical; and / or, the groove arranged in the first branch pipeline is close to the middle of the pipe wall of the first branch pipeline, and the groove arranged in the second branch pipeline is close to the middle of the pipe wall of the second branch pipeline.
[0017] According to an embodiment of the present application, in a second aspect, a motor is provided, the motor includes the cooling pipeline as described above, and the motor further includes a housing, and the cooling pipeline is arranged in the housing.
[0018] According to an embodiment of the present application, a third aspect provides an automobile, and the automobile includes the motor described above.
[0019] In the cooling pipeline of the present application, the coolant can enter the first branch pipeline and the second branch pipeline simultaneously through the first pipeline. The coolant entering the first branch pipeline can flow upward in a surrounding manner along the first surrounding section towards the second pipeline and flow out from the second pipeline, thereby completing the cooling of the lower end of the motor; the coolant entering the second branch pipeline can flow downward in a surrounding manner along the second surrounding section towards the first pipeline and flow out from the second pipeline, thereby completing the cooling of the upper end of the motor. Through this design, it is possible to cool the motor from the lower end to the upper end and from the upper end to the lower end simultaneously, thereby solving the problem of uneven heat dissipation at both ends of the motor caused by the increase in the temperature of the coolant after heat exchange with the stator and windings in the motor in the existing solution. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a schematic structural diagram of a cooling pipeline in an embodiment of the present application;
[0021] Figure 2 is Figure 1 a partial enlarged schematic view of part A in
[0022] Figure 3 is Figure 1 a partial enlarged schematic view of part B in
[0023] Description of the reference numerals in the drawings:
[0024] 100, the first pipeline; 200, the second pipeline;
[0025] 300, the first branch pipeline; 310, the first surrounding section; 311, the first annular part; 312, the first turning part;
[0026] 400, the second branch pipeline; 410, the second surrounding section; 411, the second annular part; 412, the second turning part; 500, the groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0028] It should be noted that the diagrams provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner.
[0029] The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present utility model. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model.
[0030] The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential", etc. cited in this specification is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0031] As described in the background, when the motor is working, a large amount of heat is generated in the stator and winding of the motor. If the stator and winding are not cooled and the temperature is not reduced, this will cause the motor efficiency to decrease, and in severe cases, it will cause the motor to burn out. In the existing solutions, a spiral single-channel cooling solution is usually adopted, that is, the coolant flows in from one end and flows out from the other end. Since the coolant will absorb the heat of the stator or winding during the flow process, the temperature of the coolant near the outflow end is higher than that of the coolant at the inflow end, resulting in uneven heat dissipation at both ends of the motor and affecting the operating performance of the motor. In order to better solve this problem, the researchers in this application propose a cooling pipeline to simultaneously cool both ends of the motor, thereby solving the problem of uneven heat dissipation at both ends of the motor caused by the increase in the temperature of the coolant after heat exchange with the stator and winding in the motor.
[0032] As Figure 1 shown, Figure 1This is a schematic structural diagram of a cooling pipeline in an embodiment of the present application. The cooling pipeline includes: a first pipeline 100, a second pipeline 200, a first branch pipeline 300, and a second branch pipeline 400. The first pipeline 100 is used for the coolant to flow in, the second pipeline 200 is used for the coolant to flow out, and the second pipeline 200 is located above the first pipeline 100; the second branch pipeline 400 is located above the first branch pipeline 300. The coolant can enter the first branch pipeline 300 and the second branch pipeline 400 respectively through the first pipeline 100. The coolant entering the first branch pipeline 300 can flow upward in a circular manner towards the second pipeline 200 to cool the lower end of the motor, and the coolant entering the second branch pipeline 400 can flow downward in a circular manner towards the first pipeline 100 to cool the upper end of the motor. Through the solution in this embodiment, it is intended to solve the problem of uneven heat dissipation at both ends of the motor caused by the increase in the temperature of the coolant after heat exchange with the stator and windings in the motor in the existing solution.
[0033] Specifically, the cooling pipeline is arranged inside the motor housing. The cooling pipeline includes: a first pipeline 100 and a second pipeline 200. The first pipeline 100 is located at the lower side, and the second pipeline 200 is located above the first pipeline 100. Both the first pipeline 100 and the second pipeline 200 can allow the coolant to flow through; the first branch pipeline 300 includes a first surrounding section 310, where the first surrounding section 310 surrounds and rises towards the second pipeline 200. One end of the first branch pipeline 300 close to the coolant flowing into the first surrounding section 310 is connected to the first pipeline 100, and one end close to the coolant flowing out of the first surrounding section 310 is connected to the second pipeline 200; the second branch pipeline 400 is located above the first branch pipeline 300. The second branch pipeline 400 includes a second surrounding section 410, and the second surrounding section 410 surrounds and descends towards the first pipeline 100. One end of the second branch pipeline 400 close to the coolant flowing into the second surrounding section 410 is connected to the first pipeline 100, and one end close to the coolant flowing out of the second surrounding section 410 is connected to the second pipeline 200.
[0034] In this embodiment, the coolant can enter the first branch pipe 300 and the second branch pipe 400 simultaneously through the first pipe 100. Since the second branch pipe 400 is located above the first branch pipe 300, the coolant entering the first branch pipe 300 can flow upward in a surrounding manner along the first surrounding section 310 towards the second pipe 200 and flow out from the second pipe 200, thereby completing the cooling of the lower end of the motor; the coolant entering the second branch pipe 400 can flow downward in a surrounding manner along the second surrounding section 410 towards the first pipe 100 and flow out from the second pipe 200, thereby completing the cooling of the upper end of the motor. Through this design, it is possible to cool the motor from the lower end to the upper end and from the upper end to the lower end simultaneously, thereby solving the problem of uneven heat dissipation at both ends of the motor caused by the increase in the temperature of the coolant after heat exchange with the stator and windings in the motor in the existing solution.
[0035] Further, in one embodiment, referring to Figure 2 As shown, the first surrounding section 310 includes a plurality of first annular portions 311 and a plurality of first turning portions 312. The plurality of first annular portions 311 are arranged from the side close to the first pipe 100 towards the side close to the second pipe 200. The first turning portion 312 is provided at one end of two adjacent first annular portions 311, and the first turning portion 312 connects the two adjacent first annular portions 311.
[0036] In this embodiment, the coolant entering the first branch pipe 300 will enter the first surrounding section 310 and flow through the first annular portion 311. The coolant rises through the first turning portion 312 and then enters the adjacent first annular portion 311, thereby realizing the surrounding upward flow of the coolant in this way. It should be noted that the extending direction of the first turning portion 312 can be the vertical direction, and the first turning portion 312 is used to change the flow direction of the coolant in the first branch pipe 300.
[0037] In another embodiment, referring to Figure 3 As shown, the second surrounding section 410 includes a plurality of second annular portions 411 and a plurality of second turning portions 412. The plurality of second annular portions 411 are arranged from the side close to the second pipe 200 towards the side close to the first pipe 100. The second turning portion 412 is provided at one end of two adjacent second annular portions 411, and the second turning portion 412 connects the two adjacent second annular portions 411.
[0038] In this embodiment, the coolant entering the second branch pipeline 400 will enter the second surrounding section 410 and flow through the second annular portion 411. The coolant descends through the second turning portion 412 and then enters the adjacent second annular portion 411, thereby realizing the surrounding and descending of the coolant in this way. It should be noted that the extending direction of the second turning portion 412 can be the vertical direction, and the second turning portion 412 is used to change the flow direction of the coolant in the second branch pipeline 400.
[0039] In one embodiment, the diameter dimension of the first annular portion 311 is the same as the diameter dimension of the second annular portion 411.
[0040] In this embodiment, the diameter dimensions of the first annular portion 311 and the second annular portion 411 are designed to be the same, so that the first annular portion 311 fits with the lower end and the upper end of the motor, thereby providing a better cooling effect for both ends of the motor.
[0041] In one embodiment, variable cross-section flow channels are formed in both the first branch pipeline 300 and the second branch pipeline 400. The variable cross-section flow channels respectively narrow the flow channels in the first branch pipeline 300 and the second branch pipeline 400.
[0042] In this embodiment, the variable cross-section flow channels formed in the first branch pipeline 300 and the second branch pipeline 400 are specifically designed as flow channels that gradually narrow in the flow direction. The main purpose of this design is to increase the flow velocity of the coolant when passing through this area by reducing the cross-section of the flow channel. According to the continuity equation, when the cross-sectional area of the flow channel decreases, in order to maintain the constancy of the mass flow rate, the velocity of the coolant increases. The increased flow velocity can enhance the turbulence degree of the fluid. In the cooling pipeline, by designing variable cross-section flow channels, "dead zones" (areas where the fluid flow is slow or almost stagnant) can be significantly reduced. In traditional uniform cross-section flow channels, "dead zones" are the main reasons for low thermal efficiency because the fluid in these areas hardly participates in the heat exchange process. By narrowing the cross-section of the flow channel, the flow velocity of the fluid can be increased, and the "dead zones" can be effectively eliminated, so that the fluid participates in heat exchange more uniformly throughout the flow channel.
[0043] In one embodiment, baffle structures are provided in the first branch pipeline 300 and the second branch pipeline 400, and the baffle structures respectively form variable cross-section flow channels in the first branch pipeline 300 and the second branch pipeline 400.
[0044] In this embodiment, when the coolant passes through the first branch pipeline 300 and the second branch pipeline 400, the baffle structures arranged in the first branch pipeline 300 and the baffle structures arranged in the second branch pipeline 400 will partially block the coolant, so that when the coolant flows through the gap between the baffle structure and the first branch pipeline 300 and the gap between the baffle structure and the second branch pipeline 400, the flow rate of the coolant increases, and the coolant is more likely to enter the turbulent state. In addition, the setting of the baffle structure can also effectively avoid the formation of "dead zones", thereby improving the overall heat exchange efficiency.
[0045] In another embodiment, referring to Figures 1 to 3 As shown, through grooves 500 are provided in both the first branch pipeline 300 and the second branch pipeline 400. The inner wall of the groove 500 and the pipe wall of the first branch pipeline 300 form a variable cross-section flow channel, and the inner wall of the groove 500 and the pipe wall of the second branch pipeline 400 form a variable cross-section flow channel.
[0046] In this embodiment, by providing grooves 500 in both the first branch pipeline 300 and the second branch pipeline 400, a variable cross-section flow channel is formed in the first branch pipeline 300, and a variable cross-section flow channel is formed in the second branch pipeline 400. In addition, the method of providing the grooves 500 can also increase the heat exchange area between the coolant and the first branch pipeline 300, and increase the heat exchange area between the coolant and the second branch pipeline 400, thereby increasing the heat exchange efficiency.
[0047] Further, in one embodiment, the groove 500 is oval-shaped; and / or, the groove 500 provided in the first branch pipeline 300 is close to the middle of the pipe wall of the first branch pipeline 300, and the groove 500 provided in the second branch pipeline 400 is close to the middle of the pipe wall of the second branch pipeline 400.
[0048] In this embodiment, the oval-shaped groove 500 has smooth edges and an extended major axis. This shape helps to guide the coolant to pass through the inner wall area of the groove 500 in a smoother manner, reducing the energy loss of the coolant during flow. The elliptical shape enables the coolant to maintain a relatively stable flow rate when entering and leaving the groove 500, and at the same time generates an acceleration effect at the narrowest part of the groove 500, enhancing the turbulence degree of the fluid, thereby improving the heat exchange efficiency. In addition, placing the groove 500 close to the middle of the pipe wall of the first branch pipeline 300 and close to the middle of the pipe wall of the second branch pipeline 400 increases the contact time between the coolant and the pipe walls of the first branch pipeline 300 and the second branch pipeline 400, thereby improving the heat exchange efficiency.
[0049] The present application also proposes a motor, in which the motor includes the above cooling pipeline, and the motor further includes a housing, and the cooling pipeline is arranged in the housing.
[0050] In this embodiment, by arranging the above cooling pipeline in the housing of the motor, it is possible to cool both ends of the motor simultaneously, thereby solving the problem of uneven cooling of the motor.
[0051] This application also provides a vehicle, which includes the above-mentioned motor.
[0052] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0053] The above embodiments only represent several implementation manners of this application, and the description is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several deformations and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of the patent of this application should be subject to the appended claims.
Claims
1. A cooling pipeline, the cooling pipeline is arranged in a motor housing, characterized in that: The cooling circuit comprises: A first pipeline (100) and a second pipeline (200), wherein the first pipeline (100) is located at the lower side, and the second pipeline (200) is located at the upper side of the first pipeline (100), and the first pipeline (100) and the second pipeline (200) are both capable of allowing coolant to flow through; A first branch pipeline (300), the first branch pipeline (300) comprising a first surrounding section (310), the first surrounding section (310) rising in a direction of the second pipeline (200), an end of the first branch pipeline (300) close to where the coolant flows into the first surrounding section (310) being connected to the first pipeline (100), and an end of the first branch pipeline (300) close to where the coolant flows out of the first surrounding section (310) being connected to the second pipeline (200); A second branch pipeline (400), the second branch pipeline (400) is located on the upper side of the first branch pipeline (300), the second branch pipeline (400) comprises a second surrounding section (410), the second surrounding section (410) surrounds and descends in the direction of the first pipeline (100), an end of the second branch pipeline (400) close to where the coolant flows into the second surrounding section (410) is connected to the first pipeline (100), and an end of the second branch pipeline (400) close to where the coolant flows out of the second surrounding section (410) is connected to the second pipeline (200).
2. The cooling pipeline according to claim 1, characterized in that: The first surrounding section (310) comprises a plurality of first annular portions (311) and a plurality of first turning portions (312); the plurality of first annular portions (311) are arranged from a side close to the first pipeline (100) to a side close to the second pipeline (200); the first turning portion (312) is disposed at one end of two adjacent first annular portions (311); and the first turning portion (312) connects the two adjacent first annular portions (311).
3. The cooling pipeline according to claim 2, characterized in that: The second surrounding section (410) comprises a plurality of second annular portions (411) and a plurality of second turning portions (412); the plurality of second annular portions (411) are arranged from a side close to the second pipeline (200) to a side close to the first pipeline (100); the second turning portion (412) is arranged at one end of two adjacent second annular portions (411); and the second turning portion (412) connects the two adjacent second annular portions (411).
4. The cooling pipeline according to claim 3, characterized in that: The diameter of the first annular portion (311) is the same as the diameter of the second annular portion (411).
5. The cooling pipeline according to claim 1, characterized in that: Variable cross-section flow channels are formed in both the first branch pipeline (300) and the second branch pipeline (400), and the variable cross-section flow channels respectively reduce the flow channel in the first branch pipeline (300) and the flow channel in the second branch pipeline (400).
6. The cooling pipeline according to claim 5, characterized in that: The first branch pipeline (300) and the second branch pipeline (400) are provided with baffle structures, and the baffle structures form the variable cross-section flow channels in the first branch pipeline (300) and the second branch pipeline (400), respectively.
7. The cooling pipeline according to claim 5, characterized in that: A through groove (500) is provided in both the first branch pipeline (300) and the second branch pipeline (400), and the inner wall of the groove (500) and the tube wall of the first branch pipeline (300) form the variable cross-section flow channel, and the inner wall of the groove (500) and the tube wall of the second branch pipeline (400) form the variable cross-section flow channel.
8. The cooling pipeline according to claim 7, characterized in that: The groove (500) is elliptical; and / or the groove (500) arranged in the first branch pipeline (300) is close to the middle of the pipe wall of the first branch pipeline (300), and the groove (500) arranged in the second branch pipeline (400) is close to the middle of the pipe wall of the second branch pipeline (400).
9. A motor, characterized in that: The motor comprises the cooling pipeline according to any one of claims 1 to 8, and the motor further comprises a shell, wherein the cooling pipeline is arranged in the shell.
10. An automobile, characterized in that: The vehicle comprises the electric motor as claimed in claim 9.