Heat dissipation assembly, heat dissipation structure, stator structure, motor and automobile

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By installing a combination of arc-shaped heat-efficient heat-efficient plate and connector on the outer periphery of the workpiece to be heat-dissipated, the problem of uneven cooling of existing heat-dissipation components is solved, efficient heat dissipation effect is achieved, and the service life of the workpiece is extended.

CN222366161UActive Publication Date: 2025-01-17GUANGZHOU AUTOMOBILE GROUP CO LTD

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Patent Information

Application Number: CN202421036108.1
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-05-13
Publication Date: 2025-01-17
Estimated Expiration: 2034-05-13

AI Technical Summary

Technical Problem

The existing heat dissipation components have poor heat dissipation effect during the cooling process, which leads to the high-temperature areas of the workpiece to be heated to be unable to be effectively cooled, resulting in local temperature unevenness, and limiting the performance of the workpiece.

Method used

A heat dissipation assembly including an arc-shaped heat-smoothing plate and a connecting member is designed. The heat-smoothing plate forms an annular shape with the connecting member, and is set on the outer periphery of the workpiece to be heated, and the cooling liquid is directed from the low-temperature area using the high thermal conductivity characteristics of the heat-smoothing plate. To the high temperature area, heat transfer and cooling are achieved.

Benefits of technology

It significantly improves the local heat dissipation problem of the workpiece to be heated, improves the heat dissipation efficiency, ensures that the high-temperature area of the workpiece is effectively cooled, and extends the service life of the workpiece.

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Abstract

The utility model provides a heat dissipation assembly, a heat dissipation structure, a stator structure, a motor and an automobile. The heat dissipation assembly comprises a vapor chamber and a connecting piece. The vapor chamber is an arc vapor chamber; the two ends of the vapor chamber are connected with the two ends of the connecting piece respectively, the vapor chamber and the connecting piece form an annular shape and are used for being arranged on the periphery of a workpiece to be cooled in a sleeving mode, at least part of the vapor chamber is located in a high-temperature area of the workpiece to be cooled, and cooling liquid sprayed to a low-temperature area of the workpiece to be cooled is sprayed to the vapor chamber through the cooling liquid. And the flow is guided to a high-temperature area of the workpiece to be cooled. According to the utility model, the vapor chamber guides the cooling liquid sprayed to the low-temperature area of the workpiece to be cooled to the high-temperature area of the workpiece to be cooled, so that the heat of the high-temperature area of the workpiece to be cooled is transferred to the low-temperature area, the high-temperature area is cooled, and the problem of non-uniform local heat dissipation of the workpiece to be cooled is obviously improved; and the heat dissipation efficiency is improved.

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Description

Technical Field

[0001] The utility model relates to the technical field of motor heat dissipation, and in particular to a heat dissipation component, a heat dissipation structure, a stator structure, a motor and a car. Background Art

[0002] At present, many workpieces will generate a lot of heat during use. Excessive heat will cause damage to the workpiece. In order to increase the service life of the workpiece, it is often necessary to cool the workpiece to improve the heat dissipation efficiency.

[0003] Liquid cooling in existing workpiece cooling methods uses coolant as a cooling medium, which is mainly divided into indirect cooling and direct cooling; indirect cooling indirectly cools the workpiece to be cooled through the shell cooling liquid channel of the workpiece to be cooled, but some parts of the workpiece to be cooled are not in contact with the surface of the cooling liquid channel and the heat cannot be directly taken away, and the overall cooling efficiency is low; direct cooling uses a spray pipe to spray coolant on the workpiece to be cooled for forced cooling, but the workpiece to be cooled may have uneven cooling. The places that can be sprayed are well cooled, and the places that are not sprayed or cannot be reached by the coolant have poor cooling effects, resulting in high local temperatures, thereby limiting the performance of the workpiece to be cooled. Therefore, it is necessary to design a heat dissipation component that can deliver coolant to the high-temperature area of the workpiece to be cooled to improve the heat dissipation effect. Utility Model Content

[0004] The utility model provides a heat dissipation component, a heat dissipation structure, a stator structure, a motor and a car, so as to solve the problem that the existing heat dissipation component has a poor heat dissipation effect.

[0005] A heat dissipation component comprises a heat spreader and a connecting piece;

[0006] The heat spreader is a curved heat spreader;

[0007] The two ends of the heat spreader are respectively connected to the two ends of the connecting piece. The heat spreader and the connecting piece form a ring and are used to be sleeved on the outer periphery of the workpiece to be cooled. At least part of the heat spreader is located in the high-temperature area of the workpiece to be cooled, and the coolant sprayed to the low-temperature area of the workpiece to be cooled is guided to the high-temperature area of the workpiece to be cooled.

[0008] Preferably, the vapor chamber comprises an evaporation section and two condensation sections extending from both ends of the evaporation section;

[0009] The evaporation section is arranged in a high temperature region of the workpiece to be cooled, and the condensation section is arranged in a low temperature region of the workpiece to be cooled.

[0010] Preferably, the connecting member is an elastic connecting member.

[0011] Preferably, a mounting lug is provided at each end of the vapor chamber;

[0012] The two mounting ears are connected to two ends of the connecting piece respectively.

[0013] A heat dissipation structure comprises a liquid spray pipe and the heat dissipation component;

[0014] The liquid spray pipe is used to be arranged opposite to the low-temperature area of the workpiece to be cooled, and is used to spray the cooling liquid;

[0015] The heat sink is used to guide the coolant sprayed to the low-temperature area of the workpiece to be cooled to the high-temperature area of the workpiece to be cooled.

[0016] Preferably, the liquid spray pipe is arranged above the workpiece to be cooled, and the heat spreader is arranged below the workpiece to be cooled.

[0017] A stator structure comprises a stator winding, a stator core and the heat dissipation assembly; the stator winding is the workpiece to be cooled;

[0018] The stator winding is arranged in the stator core, and the stator winding protrudes from the stator core in the axial direction to form two winding ends;

[0019] A heat dissipation component is arranged on the outer periphery of each winding end.

[0020] Preferably, the arc length of the heat spreader is greater than half of the outer circumference of the winding end;

[0021] The width of the heat spreader is less than or equal to the width of the winding end along the axial direction.

[0022] A motor comprises the stator structure.

[0023] A car comprises the motor.

[0024] In the above-mentioned heat dissipation component, heat dissipation structure, stator structure, motor and automobile, the heat dissipation component includes a heat spreader and a connecting piece. The heat spreader is an arc-shaped heat spreader, and the two ends of the heat spreader are respectively connected to the two ends of the connecting piece, so that the heat spreader and the connecting piece form a ring and are used to be mounted on the outer periphery of the workpiece to be cooled. At least part of the heat spreader is located in the high-temperature area of the workpiece to be cooled. With this design, when the coolant is sprayed onto the workpiece to be cooled, the heat spreader can serve as a liquid retaining ring of the workpiece to be cooled at the outer periphery of the workpiece to be cooled (the liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the workpiece to be cooled). It can receive the coolant and guide the coolant so that the coolant flows along the outer periphery of the workpiece to be cooled, and guide the coolant sprayed to the low-temperature area of the workpiece to be cooled to the high-temperature area of the workpiece to be cooled, thereby realizing the heat transfer from the high-temperature area of the workpiece to be cooled to the low-temperature area, so as to realize cooling of the high-temperature area, significantly improving the problem of uneven local heat dissipation of the workpiece to be cooled, and improving the heat dissipation efficiency.

[0025] When the heat dissipation component is applied to the stator winding of the motor, during installation, the two ends of the heat spreader are respectively connected to the two ends of the connecting piece. The heat spreader and the connecting piece form a ring and are used to be sleeved on the outer periphery of the stator winding. The heat spreader is at least partially located in the high-temperature area of the stator winding. The heat spreader is an arc-shaped heat spreader. With this design, when the coolant is sprayed onto the stator winding, the heat spreader can serve as a liquid retaining ring of the stator winding at the outer periphery of the stator winding (the liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the stator winding), which can receive the coolant and guide the coolant The coolant is guided to flow along the periphery of the stator winding, and the coolant sprayed to the low-temperature area of the stator winding is guided to the high-temperature area of the stator winding, thereby transferring the heat from the high-temperature area of the stator winding to the low-temperature area, so as to cool the high-temperature area, and accurately guide the sprayed coolant to the high-temperature area of the stator winding, effectively improving the cooling efficiency of the coolant; utilizing the high thermal conductivity of the heat spreader, the heat from the high-temperature area of the stator winding is transferred to the low-temperature area, significantly improving the problem of uneven local heat dissipation of the stator winding and improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is an axonometric view of the stator structure in one embodiment of the utility model.

[0028] Figure 2 It is an isometric view of a heat dissipation assembly in one embodiment of the utility model.

[0029] Among them, 1. heat sink; 11. evaporation section; 12. condensation section; 13. installation ears; 2. connectors; 3. stator winding; 4. stator core. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and 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 understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The utility model embodiment provides a heat dissipation component, referring to Figure 1 and Figure 2 The heat dissipation component includes a heat spreader 1 and a connector 2; the heat spreader 1 is an arc-shaped heat spreader; the two ends of the heat spreader 1 are respectively connected to the two ends of the connector 2, the heat spreader 1 and the connector 2 form a ring and are used to be sleeved on the outer periphery of the workpiece to be cooled. The heat spreader 1 is at least partially located in the high-temperature area of the workpiece to be cooled, and the coolant sprayed to the low-temperature area of the workpiece to be cooled is guided to the high-temperature area of the workpiece to be cooled.

[0034] As an example, when using coolant to cool the workpiece to be cooled, the coolant will generally only be sprayed on a part of the workpiece to be cooled, and cannot cool other parts of the workpiece to be cooled, resulting in uneven heat dissipation of the workpiece to be cooled. To address this problem, a heat dissipation component is designed to include a heat spreader 1 and a connector 2. The heat spreader 1 is an arc-shaped heat spreader, and the two ends of the heat spreader 1 are respectively connected to the two ends of the connector 2, so that the heat spreader 1 and the connector 2 form a ring and are used to be sleeved on the outer periphery of the workpiece to be cooled. At least a part of the heat spreader 1 is located in the high-temperature area of the workpiece to be cooled. With this design, when When the coolant is sprayed onto the workpiece to be cooled, the heat spreader 1 can serve as a liquid retaining ring for the workpiece to be cooled (the liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the workpiece to be cooled), which can receive the coolant and guide the coolant so that the coolant flows along the periphery of the workpiece to be cooled, and guide the coolant sprayed to the low-temperature area of the workpiece to be cooled to the high-temperature area of the workpiece to be cooled, thereby transferring the heat from the high-temperature area of the workpiece to be cooled to the low-temperature area, so as to cool the high-temperature area, significantly improve the problem of uneven local heat dissipation of the workpiece to be cooled, and improve the heat dissipation efficiency.

[0035] In this example, the workpieces to be cooled include annular workpieces and solid workpieces; annular workpieces include circular ring workpieces, rectangular ring workpieces and other polygonal ring workpieces, and the annular workpieces can be but are not limited to the stator winding 3 of the motor. For example, the heat dissipation component in this example is applied to the stator winding 3 of the motor. During installation, the two ends of the heat spreader 1 are respectively connected to the two ends of the connector 2. The heat spreader 1 and the connector 2 form a ring and are used to be sleeved on the outer periphery of the stator winding 3. The heat spreader 1 is at least partially located in the high-temperature area of the stator winding 3. The heat spreader 1 is an arc-shaped heat spreader. With this design, when the coolant is sprayed onto the stator winding 3, on the outer periphery of the stator winding 3, the heat spreader 1 can serve as a liquid retaining ring of the stator winding 3 (the liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the stator winding 3), and can receive the coolant. , and guide the coolant so that the coolant flows along the periphery of the stator winding 3, and guides the coolant sprayed to the low-temperature area of the stator winding 3 to the high-temperature area of the stator winding 3, thereby realizing the heat transfer from the high-temperature area of the stator winding 3 to the low-temperature area, so as to realize cooling of the high-temperature area, and accurately guide the sprayed coolant to the high-temperature area of the stator winding 3, effectively improving the cooling efficiency of the coolant; utilizing the high thermal conductivity of the heat spreader 1, the heat from the high-temperature area of the stator winding 3 is transferred to the low-temperature area, significantly improving the problem of uneven local heat dissipation of the stator winding 3, and improving the heat dissipation efficiency.

[0036] The heat dissipation component in this example has a simple structure, low assembly requirements, low precision requirements for the parts involved, is easy to process, and is convenient and practical. By utilizing the thermal conductivity of the heat spreader 1 (the thermal conductivity of air is 0.03W / m·k, and the thermal conductivity of the heat spreader is greater than 2000W / m·k) and a reasonable structural design, when the coolant is sprayed onto the stator winding 3, the heat spreader 1 can serve as a liquid retaining ring for the stator winding 3 at the periphery of the stator winding 3, receiving and guiding the coolant, and quickly transferring the heat from the high-temperature area of the stator winding 3 to the low-temperature area of the stator winding 3, thereby improving the temperature uniformity of the stator winding 3 and improving the heat dissipation efficiency of the motor. It can significantly improve the heat dissipation of the copper wire winding in the stator winding 3, reduce the temperature of the stator winding 3, increase the rated power of the motor, and realize the lightweight and miniaturization of the motor. It can effectively solve the problem of uneven upper and lower temperatures when the motor is running, and realize stable operation of the motor with high overload multiples.

[0037] In one embodiment, referring to Figure 1 and Figure 2 The heat spreader 1 includes an evaporation section 11 and two condensation sections 12 extending from both ends of the evaporation section 11; the evaporation section 11 is arranged in a high temperature area of the workpiece to be cooled, and the condensation section 12 is arranged in a low temperature area of the workpiece to be cooled.

[0038] As an example, the heat spreader 1 includes an evaporation section 11 and two condensation sections 12, and the two condensation sections 12 extend from both ends of the evaporation section 11 respectively; the evaporation section 11 is arranged in the high-temperature area of the workpiece to be cooled, and the condensation section 12 is arranged in the low-temperature area of the workpiece to be cooled. This arrangement utilizes the high thermal conductivity of the heat spreader 1 to transfer the heat from the high-temperature area of the workpiece to be cooled to the low-temperature area, significantly improving the problem of uneven local heat dissipation of the workpiece to be cooled and improving the heat dissipation efficiency.

[0039] In one embodiment, referring to Figure 1 and Figure 2 , the connecting member 2 is an elastic connecting member.

[0040] As an example, the connector 2 is an elastic connector, and the two ends of the elastic connector are respectively connected to the two ends of the heat spreader 1 to form a ring, which is used to be sleeved on the periphery of the workpiece to be cooled, so that the heat spreader 1 is in close contact with the workpiece to be cooled. In this way, the elasticity of the elastic connector is used to flexibly adjust the installation position of the heat spreader 1 to adapt to the diameter of the periphery of the workpiece to be cooled, so as to ensure safety and stability. Through the cooperation of the elastic connector and the heat spreader 1, the heat dissipation component can be directly sleeved on the heat dissipation workpiece to complete the installation, and the elasticity of the elastic connector is used to achieve a reliable connection, so that the installation and disassembly of the heat dissipation component is convenient and quick. For example, the elastic connector can be a hook spring, and the two ends of the hook spring are respectively connected to the two ends of the heat spreader 1 to form a ring, which is used to be sleeved on the periphery of the workpiece to be cooled, so that the heat spreader 1 is in close contact with the workpiece to be cooled. In this way, the installation position of the heat spreader 1 can be flexibly adjusted according to the diameter of the periphery of the workpiece to be cooled. For another example, the elastic connecting member can be an elastic band, the two ends of which are respectively connected to the two ends of the heat spreader 1 to form a ring, which is used to be sleeved on the outer circumference of the workpiece to be cooled so that the heat spreader 1 is in contact with the workpiece to be cooled. In this way, the installation position of the heat spreader 1 can be flexibly adjusted according to the diameter of the outer circumference of the workpiece to be cooled.

[0041] In one embodiment, referring to Figure 1 and Figure 2 A mounting ear 13 is respectively provided at both ends of the heat spreader 1; and the two mounting ears 13 are respectively connected to the two ends of the connecting member 2.

[0042] As an example, a mounting ear 13 is provided at both ends of the heat spreader 1, which facilitates the installation of the heat spreader 1; the two ends of the connecting piece 2 are respectively connected to the two mounting ears 13, so that the heat spreader 1 and the connecting piece 2 can cooperate to form a ring, which is used to be sleeved on the outer periphery of the workpiece to be cooled, so that the heat spreader 1 is in contact with the workpiece to be cooled, which makes it easy to install the heat spreader 1 on the outer periphery of the workpiece to be cooled.

[0043] With the development of technologies such as new energy vehicles, robots, and high-precision CNC machine tools, higher requirements have been put forward for the performance indicators of motors such as efficiency, power density, response speed, and vibration noise, prompting the motor to develop in the direction of high precision, high power density, miniaturization, lightweight, and mechatronics, which has brought about the sharp increase in the internal heat generation of the motor and the serious lack of effective heat dissipation space. Therefore, the heat dissipation problem has become a bottleneck for the motor system to further develop in the direction of high power density. Excessive internal temperature rise of the motor will not only shorten the life of the insulation material inside the motor, but also reduce the operating efficiency of the motor, increase the heat generation, and cause the motor temperature to rise further, forming a vicious circle, seriously affecting the life of the motor and the safety of the motor operation. Therefore, the use of efficient suppression of motor temperature rise is the key to the development of the motor in the direction of high efficiency, high stability, and high reliability.

[0044] The utility model embodiment provides a heat dissipation structure, referring to Figure 1 and Figure 2 , including a liquid spray pipe and a heat dissipation component; the liquid spray pipe is used to be arranged opposite to the low-temperature area of the workpiece to be cooled, and is used to spray coolant; the heat spreader 1 is used to guide the coolant sprayed to the low-temperature area of the workpiece to be cooled to the high-temperature area of the workpiece to be cooled.

[0045] As an example, the heat dissipation structure includes a liquid spray pipe and a heat dissipation component. The heat dissipation component includes a heat spreader 1 and a connector 2. The heat spreader 1 is an arc-shaped heat spreader. The two ends of the heat spreader 1 are respectively connected to the two ends of the connector 2, so that the heat spreader 1 and the connector 2 form a ring and are used to be sleeved on the outer periphery of the workpiece to be dissipated. At least part of the heat spreader 1 is located in the high-temperature area of the workpiece to be dissipated. When in use, the liquid spray pipe is arranged relative to the low-temperature area of the workpiece to be dissipated, and is used to spray coolant on the low-temperature area of the workpiece to be dissipated; the heat spreader 1 is used to guide the coolant sprayed to the low-temperature area of the workpiece to be dissipated to the high-temperature area of the workpiece to be dissipated, so as to achieve heat transfer from the high-temperature area of the workpiece to be dissipated to the low-temperature area, so as to achieve cooling of the high-temperature area, significantly improve the problem of uneven local heat dissipation of the workpiece to be dissipated, and improve the heat dissipation efficiency.

[0046] In one embodiment, the liquid spray pipe is arranged above the workpiece to be cooled, and the heat spreader 1 is arranged below the workpiece to be cooled.

[0047] As an example, a spray pipe is arranged above the workpiece to be cooled, i.e., in the low-temperature area, and a heat spreader 1 is arranged below the workpiece to be cooled, i.e., in the high-temperature area; when in use, the spray pipe sprays the coolant to the top of the workpiece to be cooled, and the coolant flows downward along the workpiece to be cooled to the location of the heat spreader 1. The heat spreader 1 serves as a liquid retaining ring, which can receive the coolant and guide the coolant so that the coolant flows along the periphery of the workpiece to be cooled, and guides the coolant sprayed to the low-temperature area of the workpiece to be cooled to the high-temperature area of the workpiece to be cooled, thereby transferring the heat from the high-temperature area of the workpiece to be cooled to the low-temperature area, so as to cool the high-temperature area and effectively improve the cooling efficiency of the coolant.

[0048] The utility model embodiment provides a stator structure, referring to Figure 1 and Figure 2 , including a stator winding 3, a stator core 4 and a heat dissipation component; the stator winding 3 is a workpiece to be cooled; the stator winding 3 is passed through the stator core 4, and the stator winding 3 protrudes from the stator core 4 in the axial direction to form two winding ends; a heat dissipation component is provided on the outer periphery of each winding end.

[0049] As an example, the stator structure includes a stator winding 3 and a heat dissipation component. The stator winding 3 is a workpiece to be cooled. When the coolant is used to cool the stator winding 3, the coolant is generally only sprayed on a part of the stator winding 3, and cannot cool other parts of the heat dissipation component to be cooled, resulting in uneven heat dissipation of the stator winding 3. To address this problem, the heat dissipation component is designed to include a heat spreader 1 and a connector 2. The heat spreader 1 is an arc-shaped heat spreader. The two ends of the heat spreader 1 are respectively connected to the two ends of the connector 2, so that the heat spreader 1 and the connector 2 form a ring and are used to be sleeved on the outer periphery of the stator winding 3. At least part of the heat spreader 1 is located at the stator. The high temperature area of the winding 3 is designed in this way. When the coolant is sprayed onto the stator winding 3, the heat spreader 1 can serve as a liquid retaining ring of the stator winding 3 at the periphery of the stator winding 3 (the liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the stator winding 3). It can receive the coolant and guide the coolant so that the coolant flows along the periphery of the stator winding 3, and guides the coolant sprayed to the low temperature area of the stator winding 3 to the high temperature area of the stator winding 3, thereby realizing the heat transfer from the high temperature area of the stator winding 3 to the low temperature area, so as to realize cooling of the high temperature area, significantly improving the problem of uneven local heat dissipation of the stator winding 3, and improving the heat dissipation efficiency.

[0050] The heat dissipation component in this example has a simple structure, low assembly requirements, low precision requirements for the parts involved, is easy to process, and is convenient and practical. By utilizing the thermal conductivity of the heat spreader 1 (the thermal conductivity of air is 0.03W / m·k, and the thermal conductivity of the heat spreader is greater than 2000W / m·k) and a reasonable structural design, when the coolant is sprayed onto the stator winding 3, the heat spreader 1 can serve as a liquid retaining ring for the stator winding 3 at the periphery of the stator winding 3, receiving and guiding the coolant, and quickly transferring the heat from the high-temperature area of the stator winding 3 to the low-temperature area of the stator winding 3, thereby improving the temperature uniformity of the stator winding 3 and improving the heat dissipation efficiency of the motor. It can significantly improve the heat dissipation of the copper wire winding in the stator winding 3, reduce the temperature of the stator winding 3, increase the rated power of the motor, and realize the lightweight and miniaturization of the motor. It can effectively solve the problem of uneven upper and lower temperatures when the motor is running, and realize stable operation of the motor with high overload multiples.

[0051] As an example, the stator winding 3 is passed through the stator core 4, and the stator winding 3 protrudes from the stator core 4 in the axial direction to form two winding ends; a heat dissipation component is provided on the outer periphery of each winding end, so that two heat dissipation components are used to evenly heat the two winding ends of the stator winding 3, and the sprayed coolant is accurately guided to the high-temperature area of the stator winding 3, thereby effectively improving the cooling efficiency of the coolant; utilizing the high thermal conductivity of the heat spreader, the heat of the high-temperature area of the stator winding 3 is transferred to the low-temperature area, thereby significantly improving the problem of uneven local heat dissipation of the stator winding 3 and improving the heat dissipation efficiency.

[0052] In one embodiment, referring to Figure 1 The arc length of the heat spreader 1 is greater than half of the outer circumference of the winding end; the width of the heat spreader 1 is less than or equal to the width of the winding end along the axial direction.

[0053] As an example, the arc length and width of the heat spreader 1 can be adjusted according to the size of the stator winding 3. The heat spreader 1 is in the shape of a semicircular flat strip, and the arc length of the heat spreader 1 is greater than half of the outer circumference of the winding end; the width of the heat spreader 1 is less than or equal to the width of the winding end along the axial direction. This arrangement can ensure that when the heat spreader 1 is sleeved on the outer periphery of the stator winding 3, it can serve as a liquid retaining ring of the stator winding 3 to ensure that the coolant can flow to the high-temperature area of the stator winding 3. The high thermal conductivity of the heat spreader 1 can be used to transfer the heat from the high-temperature area of the stator winding 3 to the low-temperature area, which significantly improves the problem of uneven local heat dissipation of the stator winding 3, improves the heat dissipation effect, and can also reduce the material used in the heat spreader 1 and save production costs.

[0054] An embodiment of the utility model provides a motor, comprising a stator structure.

[0055] As an example, the stator structure includes a stator winding 3 and a heat dissipation component. The stator winding 3 is a workpiece to be cooled. When the coolant is used to cool the stator winding 3, the coolant is generally only sprayed on a part of the stator winding 3, and cannot cool other parts of the heat dissipation component to be cooled, resulting in uneven heat dissipation of the stator winding 3. To address this problem, the heat dissipation component is designed to include a heat spreader 1 and a connector 2. The heat spreader 1 is an arc-shaped heat spreader. The two ends of the heat spreader 1 are respectively connected to the two ends of the connector 2, so that the heat spreader 1 and the connector 2 form a ring and are used to be sleeved on the outer periphery of the stator winding 3. At least part of the heat spreader 1 is located at the stator. The high temperature area of the winding 3 is designed in this way. When the coolant is sprayed onto the stator winding 3, the heat spreader 1 can serve as a liquid retaining ring of the stator winding 3 at the periphery of the stator winding 3 (the liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the stator winding 3). It can receive the coolant and guide the coolant so that the coolant flows along the periphery of the stator winding 3, and guides the coolant sprayed to the low temperature area of the stator winding 3 to the high temperature area of the stator winding 3, thereby realizing the heat transfer from the high temperature area of the stator winding 3 to the low temperature area, so as to realize cooling of the high temperature area, significantly improving the problem of uneven local heat dissipation of the stator winding 3, and improving the heat dissipation efficiency.

[0056] The heat dissipation component in this example has a simple structure, low assembly requirements, low precision requirements for the parts involved, is easy to process, and is convenient and practical. By utilizing the thermal conductivity of the heat spreader 1 (the thermal conductivity of air is 0.03W / m·k, and the thermal conductivity of the heat spreader is greater than 2000W / m·k) and a reasonable structural design, when the coolant is sprayed onto the stator winding 3, the heat spreader 1 can serve as a liquid retaining ring for the stator winding 3 at the periphery of the stator winding 3, receiving and guiding the coolant, and quickly transferring the heat from the high-temperature area of the stator winding 3 to the low-temperature area of the stator winding 3, thereby improving the temperature uniformity of the stator winding 3 and improving the heat dissipation efficiency of the motor. It can significantly improve the heat dissipation of the copper wire winding in the stator winding 3, reduce the temperature of the stator winding 3, increase the rated power of the motor, and realize the lightweight and miniaturization of the motor. It can effectively solve the problem of uneven upper and lower temperatures when the motor is running, and realize stable operation of the motor with high overload multiples.

[0057] An embodiment of the utility model provides a car, comprising a motor.

[0058] As an example, the stator structure includes a stator winding 3 and a heat dissipation component. The stator winding 3 is a workpiece to be cooled. When the coolant is used to cool the stator winding 3, the coolant is generally only sprayed on a part of the stator winding 3, and cannot cool other parts of the heat dissipation component to be cooled, resulting in uneven heat dissipation of the stator winding 3. To address this problem, the heat dissipation component is designed to include a heat spreader 1 and a connector 2. The heat spreader 1 is an arc-shaped heat spreader. The two ends of the heat spreader 1 are respectively connected to the two ends of the connector 2, so that the heat spreader 1 and the connector 2 form a ring and are used to be sleeved on the outer periphery of the stator winding 3. At least part of the heat spreader 1 is located at the stator. The high temperature area of the winding 3 is designed in this way. When the coolant is sprayed onto the stator winding 3, the heat spreader 1 can serve as a liquid retaining ring of the stator winding 3 at the periphery of the stator winding 3 (the liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the stator winding 3). It can receive the coolant and guide the coolant so that the coolant flows along the periphery of the stator winding 3, and guides the coolant sprayed to the low temperature area of the stator winding 3 to the high temperature area of the stator winding 3, thereby realizing the heat transfer from the high temperature area of the stator winding 3 to the low temperature area, so as to realize cooling of the high temperature area, significantly improving the problem of uneven local heat dissipation of the stator winding 3, and improving the heat dissipation efficiency.

[0059] The heat dissipation component in this example has a simple structure, low assembly requirements, low precision requirements for the parts involved, is easy to process, and is convenient and practical. By utilizing the thermal conductivity of the heat spreader 1 (the thermal conductivity of air is 0.03W / m·k, and the thermal conductivity of the heat spreader is greater than 2000W / m·k) and a reasonable structural design, when the coolant is sprayed onto the stator winding 3, the heat spreader 1 can serve as a liquid retaining ring for the stator winding 3 at the periphery of the stator winding 3, receiving and guiding the coolant, and quickly transferring the heat from the high-temperature area of the stator winding 3 to the low-temperature area of the stator winding 3, thereby improving the temperature uniformity of the stator winding 3 and improving the heat dissipation efficiency of the motor. It can significantly improve the heat dissipation of the copper wire winding in the stator winding 3, reduce the temperature of the stator winding 3, increase the rated power of the motor, and realize the lightweight and miniaturization of the motor. It can effectively solve the problem of uneven upper and lower temperatures when the motor is running, and realize stable operation of the motor with high overload multiples.

[0060] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A heat dissipation component, characterized in that: Including heat sink and connecting parts; The heat spreader is a curved heat spreader; The two ends of the heat spreader are respectively connected to the two ends of the connecting piece. The heat spreader and the connecting piece form a ring and are used to be sleeved on the outer periphery of the workpiece to be cooled. At least part of the heat spreader is located in the high-temperature area of the workpiece to be cooled, and the coolant sprayed to the low-temperature area of the workpiece to be cooled is guided to the high-temperature area of the workpiece to be cooled.

2. The heat dissipation assembly according to claim 1, characterized in that: The vapor chamber includes an evaporation section and two condensation sections extending from both ends of the evaporation section; The evaporation section is arranged in a high temperature region of the workpiece to be cooled, and the condensation section is arranged in a low temperature region of the workpiece to be cooled.

3. The heat dissipation assembly according to claim 1, characterized in that: The connecting piece is an elastic connecting piece.

4. The heat dissipation assembly according to claim 1, characterized in that: Both ends of the heat spreader are respectively provided with a mounting lug; The two mounting ears are connected to two ends of the connecting piece respectively.

5. A heat dissipation structure, characterized in that: It comprises a liquid spray pipe and a heat dissipation assembly according to any one of claims 1 to 4; The liquid spray pipe is used to be arranged opposite to the low-temperature area of the workpiece to be cooled, and is used to spray the cooling liquid; The heat sink is used to guide the coolant sprayed to the low-temperature area of the workpiece to be cooled to the high-temperature area of the workpiece to be cooled.

6. The heat dissipation structure according to claim 5, characterized in that: The liquid spray pipe is arranged above the workpiece to be cooled, and the heat spreader is arranged below the workpiece to be cooled.

7. A stator structure, characterized in that: It comprises a stator winding, a stator core and the heat dissipation assembly according to any one of claims 1 to 4; the stator winding is the workpiece to be cooled; The stator winding is arranged in the stator core, and the stator winding protrudes from the stator core in the axial direction to form two winding ends; A heat dissipation component is arranged on the outer periphery of each winding end.

8. The stator structure according to claim 7, characterized in that: The arc length of the heat spreader is greater than half of the outer circumference of the winding end; The width of the heat spreader is less than or equal to the width of the winding end along the axial direction.

9. A motor, characterized in that: Comprising the stator structure as described in any one of claims 7-8.

10. An automobile, characterized in that: Comprising the motor as claimed in claim 9.