Heat dissipation assembly, heat dissipation structure, stator structure, motor and automobile
By setting up an arc-shaped heat-smoothing plate on the inner and outer rings of the workpiece to be heated, and using the liquid spray pipe to direct the coolant to the high-temperature area, the problem that the coolant is difficult to reach the high-temperature area uniformly is solved, and the heat dissipation efficiency and the stability of the motor are significantly improved.
Patent Information
- Application Number
- CN202421037591.5
- 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
The existing heat dissipation components have poor heat dissipation effect during cooling, especially the cooling liquid is difficult to evenly reach the high-temperature area of the workpiece to be heated, resulting in higher local temperatures and affecting the heat dissipation efficiency.
Design a heat dissipation assembly, including two arc-shaped heat-efficient plates, which are respectively arranged on the inner and outer rings of the workpiece to be heated. The part of the heat-efficient plate is located in the low-temperature area and the high-temperature area, and the coolant is sprayed to the low-temperature through the liquid spraying pipe. In the area, the heat equalizing plate is directed to the high-temperature area, forming a liquid barrier ring structure to realize the flow diversion and heat transfer of the coolant.
It significantly improves the local heat dissipation problem of the workpiece to be heated, improves the heat dissipation efficiency, ensures that the coolant can be accurately guided to the high-temperature area, effectively reduces the temperature, and improves the power and stability of the motor.
Smart Images
Figure CN222366162U_ABST
Abstract
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 effect.
[0003] The existing workpiece cooling methods are mainly air cooling and liquid cooling. Air cooling uses air as a cooling medium. Air has low thermal conductivity, can carry away limited heat, and has low cooling efficiency. Liquid cooling uses coolant as a cooling medium, which is mainly divided into indirect cooling and direct cooling. Indirect cooling uses the shell cooling liquid channel of the workpiece to be cooled to indirectly cool the workpiece to be cooled. However, some parts of the workpiece to be cooled are not in contact with the surface of the cooling liquid channel, so 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. However, the workpiece to be cooled may be cooled unevenly. The places that can be sprayed are well cooled, while 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 transfer 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 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 assembly includes two heat sinks;
[0006] The two heat spreaders are both arc-shaped heat spreaders, and the two heat spreaders are both connected to the workpiece to be cooled;
[0007] Any one of the two heat sinks is arranged on the inner circle of the workpiece to be cooled, and the other is arranged on the outer circle of the workpiece to be cooled;
[0008] At least a portion of any one of the two vapor chambers is located in a low-temperature region of the workpiece to be cooled, and at least a portion of the other vapor chamber is located in a high-temperature region of the workpiece to be cooled.
[0009] Preferably, the opening of the heat spreader disposed on the inner circle of the workpiece to be cooled faces downward, and the opening of the heat spreader disposed on the outer circle of the workpiece to be cooled faces upward.
[0010] Preferably, the two vapor chambers are respectively a first vapor chamber and a second vapor chamber;
[0011] The first vapor chamber is disposed in the inner circle of the workpiece to be cooled, and the first vapor chamber comprises a first body, at least a portion of which is located in the low temperature area of the workpiece to be cooled;
[0012] The second heat spreader is arranged on the outer circle of the workpiece to be cooled. The second heat spreader includes a second body and a guide section extending from the second body away from the workpiece to be cooled. At least part of the second body is located in the high temperature area of the workpiece to be cooled.
[0013] Preferably, the first body comprises a first condensation section and two first evaporation sections extending from both ends of the first condensation section, and the first condensation section is located in a low-temperature area of the workpiece to be cooled;
[0014] The second body includes a second evaporation section and two second condensation sections extending from two ends of the second evaporation section, each of the second condensation sections extends a guide section, and the second evaporation section is located in a high temperature area of the workpiece to be cooled.
[0015] Preferably, the first end of the first vapor chamber at least partially overlaps with the first end of the second vapor chamber along the radial direction of the workpiece to be cooled;
[0016] The second end of the first vapor chamber at least partially overlaps with the second end of the second vapor chamber along the radial direction of the workpiece to be cooled.
[0017] Preferably, the heat dissipation assembly further includes a fastener, and the fastener is used to fix the first heat sink and / or the second heat sink on the workpiece to be cooled.
[0018] Preferably, the fastener comprises a first strap, a second strap and a third strap;
[0019] The first strap is used to fix the first heat sink and the workpiece to be cooled;
[0020] The second strap is used to fix the second vapor chamber and the workpiece to be cooled;
[0021] The third strap is used to fix the first heat spreader, the second heat spreader and the workpiece to be cooled.
[0022] A heat dissipation structure comprises a liquid spray pipe and the heat dissipation component;
[0023] 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;
[0024] The two heat spreaders cooperate 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.
[0025] A stator structure comprises a stator winding, a stator core and the heat dissipation assembly; the stator winding is the workpiece to be cooled;
[0026] 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;
[0027] A heat dissipation component is arranged on each winding end.
[0028] Preferably, the arc length of one of the two heat spreaders is greater than half of the circumference of the inner circle of the winding end;
[0029] The width of one of the two heat spreaders is less than or equal to the width of the winding end in the axial direction;
[0030] The arc length of the other of the two heat spreaders is greater than half of the circumference of the outer circle of the winding end;
[0031] The width of the other of the two heat spreaders is less than or equal to the width of the winding end along the axial direction.
[0032] A motor comprises the stator structure.
[0033] A car comprises the motor.
[0034] In the above-mentioned heat dissipation component, stator structure, motor and automobile, the heat dissipation component includes two heat spreaders; both heat spreaders are arc-shaped heat spreaders, and both heat spreaders are connected to the workpiece to be cooled; either one of the two heat spreaders is arranged on the inner ring of the workpiece to be cooled, and the other is arranged on the outer ring of the workpiece to be cooled; at least part of either one of the two heat spreaders is located in the low-temperature area of the workpiece to be cooled, and at least part of the other is located in the high-temperature area of the workpiece to be cooled; for example, one heat spreader is arranged on the inner ring of the workpiece to be cooled, and is in contact with the workpiece to be cooled, and at least part of the heat spreader is located in the low-temperature area of the workpiece to be cooled; the other heat spreader is arranged on the outer ring of the workpiece to be cooled, and is in contact with the workpiece to be cooled, and 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, a heat spreader can serve as an inner ring liquid retaining ring of the workpiece to be cooled (the inner ring liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the inner ring of the workpiece to be cooled), which can receive the coolant and guide the coolant so that the coolant flows along the inner ring of the workpiece to be cooled; in the outer ring of the workpiece to be cooled, another heat spreader can serve as an outer ring liquid retaining ring of the workpiece to be cooled (the outer ring liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the outer ring of the workpiece to be cooled), which can receive the coolant and guide the coolant so that the coolant flows along the outer ring of the workpiece to be cooled; the two heat spreaders cooperate to form a complete liquid retaining ring, which guides the coolant sprayed to the low-temperature areas of the inner and outer rings of the workpiece to be cooled to the high-temperature areas of the inner and outer rings 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] The heat dissipation component in this example is applied to the stator winding of the motor. During installation, any one of the two heat spreaders is set on the inner ring of the stator winding, and the other is set on the outer ring of the stator winding; both heat spreaders are in contact with the stator winding; at least part of any one of the two heat spreaders is located in the low-temperature area of the stator winding, and at least part of the other is located in the high-temperature area of the stator winding; in this way, when the coolant is sprayed onto the stator winding, in the inner ring of the stator winding, a heat spreader can serve as an inner ring liquid retaining ring of the stator winding (the inner ring liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the inner ring of the stator winding), which can receive the coolant and guide the coolant so that the coolant flows along the inner ring of the stator winding; in the outer ring of the stator winding, another heat spreader can serve as The outer ring liquid retaining ring (the outer ring liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the outer ring of the stator winding) can receive the coolant and guide the coolant so that the coolant flows along the outer ring of the stator winding; the two heat spreaders cooperate to form a complete liquid retaining ring, which guides the coolant sprayed to the low-temperature area of the inner and outer rings of the stator winding to the high-temperature area of the inner and outer rings of the stator winding, thereby realizing the heat transfer 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 to transfer the heat from the high-temperature area of the stator winding 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
[0036] 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.
[0037] Figure 1 This is an axonometric view of the stator structure in one embodiment of the utility model.
[0038] Figure 2 It is an isometric view of a heat dissipation assembly in one embodiment of the utility model.
[0039] Among them, 1. first heat spreader; 11. first body; 111. first condensation section; 112. first evaporation section; 2. second heat spreader; 21. second body; 211. second evaporation section; 212. second condensation section; 22. guide section; 3. fastener; 31. first strap; 32. second strap; 33. third strap; 4. stator winding; 5. stator core. DETAILED DESCRIPTION
[0040] 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.
[0041] 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.
[0042] 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.
[0043] The utility model embodiment provides a heat dissipation component, referring to Figure 1 and Figure 2 The heat dissipation component includes two heat spreaders, both of which are arc-shaped heat spreaders, and both of which are connected to the workpiece to be cooled; either one of the two heat spreaders is arranged on the inner circle of the workpiece to be cooled, and the other is arranged on the outer circle of the workpiece to be cooled; at least part of either one of the two heat spreaders is located in the low-temperature area of the workpiece to be cooled, and at least part of the other is located in the high-temperature area of the workpiece to be cooled.
[0044] As an example, when using coolant to cool the workpiece to be cooled, the coolant will generally only be sprayed on part of the workpiece to be cooled, and cannot cool other parts of the workpiece to be cooled, resulting in uneven local heat dissipation of the workpiece to be cooled. To address this problem, a heat dissipation component is designed to include two heat spreaders; both heat spreaders are arc-shaped heat spreaders, and both heat spreaders are connected to the workpiece to be cooled; either one of the two heat spreaders is arranged on the inner circle of the workpiece to be cooled, and the other is arranged on the outer circle of the workpiece to be cooled; at least part of either one of the two heat spreaders is located in the low-temperature area of the workpiece to be cooled, and at least part of the other is located in the high-temperature area of the workpiece to be cooled; for example, one heat spreader is arranged on the inner circle of the workpiece to be cooled, and contacts with the workpiece to be cooled, and at least part of the heat spreader is located in the low-temperature area of the workpiece to be cooled; the other heat spreader is arranged on the outer circle of the workpiece to be cooled, and contacts with the workpiece to be cooled, and 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, a heat spreader can serve as an inner ring liquid retaining ring of the workpiece to be cooled (the inner ring liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the inner ring of the workpiece to be cooled), which can receive the coolant and guide the coolant so that the coolant flows along the inner ring of the workpiece to be cooled; in the outer ring of the workpiece to be cooled, another heat spreader can serve as an outer ring liquid retaining ring of the workpiece to be cooled (the outer ring liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the outer ring of the workpiece to be cooled), which can receive the coolant and guide the coolant so that the coolant flows along the outer ring of the workpiece to be cooled; the two heat spreaders cooperate to form a complete liquid retaining ring, which guides the coolant sprayed to the low-temperature areas of the inner and outer rings of the workpiece to be cooled to the high-temperature areas of the inner and outer rings 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.
[0045] In this example, the workpiece to be cooled includes an annular workpiece; the annular workpiece includes a circular ring workpiece, a rectangular ring workpiece, and other polygonal ring workpieces, etc. The annular workpiece may be, but is not limited to, a stator winding 4 of a motor. For example, the heat dissipation component in this example is applied to the stator winding 4 of the motor. During installation, any one of the two heat spreaders is set on the inner ring of the stator winding 4, and the other is set on the outer ring of the stator winding 4; both heat spreaders are in contact with the stator winding 4; at least part of any one of the two heat spreaders is located in the low-temperature area of the stator winding 4, and at least part of the other is located in the high-temperature area of the stator winding 4; in this way, when the coolant is sprayed onto the stator winding 4, in the inner ring of the stator winding 4, a heat spreader can serve as an inner ring liquid retaining ring of the stator winding 4 (the inner ring liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the inner ring of the stator winding 4), which can receive the coolant and guide the coolant so that the coolant flows along the inner ring of the stator winding 4; in the outer ring of the stator winding 4, another heat spreader can serve as a stator The outer ring liquid retaining ring of winding 4 (the outer ring liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the outer ring of stator winding 4) can receive the coolant and guide the coolant so that the coolant flows along the outer ring of stator winding 4; the two heat spreaders cooperate to form a complete liquid retaining ring, which guides the coolant sprayed to the low-temperature area of the inner and outer rings of the stator winding 4 to the high-temperature area of the inner and outer rings of the stator winding 4, thereby realizing the heat transfer from the high-temperature area of the stator winding 4 to the low-temperature area, so as to cool the high-temperature area, accurately guide the sprayed coolant to the high-temperature area of the stator winding 4, and effectively improve the cooling efficiency of the coolant; utilize the high thermal conductivity of the heat spreader to transfer the heat from the high-temperature area of the stator winding 4 to the low-temperature area, significantly improve the problem of uneven local heat dissipation of the stator winding 4, and improve the heat dissipation efficiency.
[0046] 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 (thermal conductivity of air is 0.03W / m·k, thermal conductivity of the heat spreader is >2000W / m·k) and a reasonable structural design, when the coolant is sprayed onto the stator winding 4, the heat spreader can serve as a liquid retaining ring of the stator winding 4 on the periphery of the stator winding 4, receiving and guiding the coolant, and quickly transferring the heat from the high-temperature area of the stator winding 4 to the low-temperature area of the stator winding 4, thereby improving the temperature uniformity of the stator winding 4 and improving the heat dissipation effect of the motor. It can significantly improve the heat dissipation of the copper wire winding in the stator winding 4, reduce the temperature of the stator winding 4, 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.
[0047] In one embodiment, referring to Figure 1 and Figure 2The opening of the heat spreader arranged on the inner circle of the workpiece to be cooled faces downward, and the opening of the heat spreader arranged on the outer circle of the workpiece to be cooled faces upward.
[0048] As an example, two heat spreaders are used together. During installation, one heat spreader is set on the inner circle of the workpiece to be cooled, and the other heat spreader is set on the outer circle of the workpiece to be cooled. The opening of the inner circle heat spreader faces downward, and the opening of the outer circle heat spreader faces upward, that is, the inner circle heat spreader is located above the outer circle heat spreader. The coolant flowing through the inner circle heat spreader will flow downward into the arc-shaped opening of the outer circle heat spreader, so that the coolant is gathered in the outer circle heat spreader to dissipate the high-temperature area at the bottom of the workpiece to be cooled. If the settings are reversed, with the outer circle heat spreader on top and the inner circle heat spreader on the bottom, the coolant flowing down from the outer circle heat spreader will not contact the workpiece to be cooled, nor will it flow into the inner circle heat spreader.
[0049] In one embodiment, referring to Figure 1 and Figure 2 The two heat spreaders are respectively a first heat spreader 1 and a second heat spreader 2; the first heat spreader 1 is arranged in the inner circle of the workpiece to be cooled, and the first heat spreader 1 includes a first body 11, and at least a part of the first body 11 is located in the low-temperature area of the workpiece to be cooled; the second heat spreader 2 is arranged in the outer circle of the workpiece to be cooled, and the second heat spreader 2 includes a second body 21 and a guide section 22 extending from the second body 21 in a direction away from the workpiece to be cooled, and at least a part of the second body 21 is located in the high-temperature area of the workpiece to be cooled.
[0050] As an example, two heat spreaders are introduced, namely a first heat spreader 1 and a second heat spreader 2. During installation, the first heat spreader 1 is arranged in the inner circle of the workpiece to be cooled. The first heat spreader 1 includes a first body 11. At least part of the first body 11 is located in the low-temperature area of the workpiece to be cooled. When the coolant is sprayed onto the workpiece to be cooled, in the inner circle of the workpiece to be cooled, the first body 11 can serve as an inner circle liquid retaining ring of the workpiece to be cooled, receiving the coolant and guiding the coolant, so that the coolant flows along the inner circle of the workpiece to be cooled to the high-temperature area, thereby cooling the high-temperature area of the inner circle of the workpiece to be cooled. The second heat spreader 2 is arranged on the outer ring of the workpiece to be cooled. The second heat spreader 2 includes a second body 21. At least part of the second body 21 is located in the high temperature area of the workpiece to be cooled. When the coolant is sprayed onto the workpiece to be cooled, the second body 21 can serve as the outer ring liquid retaining ring of the workpiece to be cooled, receiving and guiding the coolant, so that the coolant flows along the outer ring of the workpiece to be cooled to the high temperature area, thereby cooling the high temperature area of the outer ring of the workpiece to be cooled. The second heat spreader 2 also includes a guide section 22, which extends from the second body 21 in a direction away from the workpiece to be cooled. The guide section 22 can guide the sprayed coolant into the arc of the second heat spreader 2, so that more coolant can contact and exchange heat with the workpiece to be cooled. If there is no guide section 22, the coolant flowing into the arc of the second heat spreader 2 will be reduced, and the heat dissipation effect will be poor.
[0051] In one embodiment, referring to Figure 2 The first body 11 includes a first condensation section 111 and two first evaporation sections 112 extending from both ends of the first condensation section 111, and the first condensation section 111 is located in the low-temperature area of the workpiece to be cooled; the second body 21 includes a second evaporation section 211 and two second condensation sections 212 extending from both ends of the second evaporation section 211, each second condensation section 212 extends a guide section 22, and the second evaporation section 211 is located in the high-temperature area of the workpiece to be cooled.
[0052] As an example, the first body 11 includes a first condensation section 111 and two first evaporation sections 112, and the two first evaporation sections 112 extend from both ends of the first condensation section 111 respectively; the second body 21 includes a second evaporation section 211 and two second condensation sections 212, and the two second condensation sections 212 extend from both ends of the second evaporation section 211 respectively, and the second evaporation section 211 is set in the high temperature area of the workpiece to be cooled. During installation, the first body 11 and the second body 21 can be arranged according to actual conditions. The first body 11 is installed on the inner circle of the workpiece to be cooled, with its opening facing downward, and the second body 21 is installed on the outer circle of the workpiece to be cooled, with its opening facing upward, and the two are arranged oppositely; the first condensation section 111 is located in the low-temperature area of the workpiece to be cooled, the two first evaporation sections 112 are respectively located in the high-temperature area of the workpiece to be cooled, the second evaporation section 211 is located in the high-temperature area of the workpiece to be cooled, and the two second condensation sections 212 are respectively located in the low-temperature area of the workpiece to be cooled. This arrangement utilizes the high thermal conductivity of the two heat spreaders. When the coolant is sprayed onto the workpiece to be cooled, in the inner circle of the workpiece to be cooled, the first heat spreader 1 is an arc-shaped heat spreader. The first heat spreader 1 cooperates with the inner circle of the workpiece to be cooled to form a first arc-shaped flow channel, which can receive the coolant and guide the coolant so that the coolant flows along the inner circle of the workpiece to be cooled. In other words, the coolant can flow from the first condensation section 111 to the two first evaporation sections 112 respectively, so as to cool the workpiece to be cooled and transfer the heat from the high-temperature area of the workpiece to be cooled to the low-temperature area. In the outer ring of the workpiece to be cooled, the second heat spreader 2 is an arc-shaped heat spreader. The second heat spreader 2 cooperates with the outer ring of the workpiece to be cooled to form a second arc-shaped flow channel, which can receive the coolant and guide the coolant so that the coolant flows along the outer ring of the workpiece to be cooled. In other words, the coolant can flow from the two second condensation sections 212 to the second evaporation section 211, so as to cool the workpiece to be cooled and transfer the heat from the high-temperature area of the workpiece to be cooled to the low-temperature area; significantly improve the problem of uneven local heat dissipation of the workpiece to be cooled and improve the heat dissipation effect. The guide section 22 extends from the second condensation section 212 in a direction away from the workpiece to be cooled, and can guide the ejected coolant into the arc of the second heat spreader 2, so that more coolant can contact and exchange heat with the workpiece to be cooled; if there is no guide section 22, the coolant flowing into the arc of the second heat spreader 2 will be reduced, and the heat dissipation effect will be worse.
[0053] In one embodiment, referring to Figure 1 and Figure 2 The first end of the first heat spreader 1 and the first end of the second heat spreader 2 at least partially overlap along the radial direction of the workpiece to be cooled; the second end of the first heat spreader 1 and the second end of the second heat spreader 2 at least partially overlap along the radial direction of the workpiece to be cooled.
[0054] As an example, during installation, the first heat spreader 1 and the second heat spreader 2 can be arranged according to actual conditions, and the first end of the first heat spreader 1 and the first end of the second heat spreader 2 at least partially overlap along the radial direction of the workpiece to be cooled; the second end of the first heat spreader 1 and the second end of the second heat spreader 2 at least partially overlap along the radial direction of the workpiece to be cooled, that is, the first heat spreader 1 or the second heat spreader 2 is installed on the inner circle of the workpiece to be cooled, with its opening facing downward, and the second heat spreader 2 or the first heat spreader 1 is installed on the outer circle of the workpiece to be cooled, with its opening facing upward, and the two are arranged opposite to each other and cooperate to form a complete annular structure, which guides the coolant sprayed to the low-temperature area of the inner and outer circles of the workpiece to be cooled to the high-temperature area of the inner and outer circles 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. In this example, the first heat spreader 1 is set on the inner circle of the workpiece to be cooled, and the second heat spreader 2 is set on the outer circle of the workpiece to be cooled. In this way, when the coolant is sprayed onto the workpiece to be cooled, the first heat spreader 1 can receive the coolant in the inner circle of the workpiece to be cooled, and guide the coolant so that the coolant flows along the inner circle of the workpiece to be cooled, so as to cool the workpiece to be cooled; the second heat spreader 2 can receive the coolant in the outer circle of the workpiece to be cooled, and guide the coolant so that the coolant flows along the outer circle of the workpiece to be cooled, so as to cool the workpiece to be cooled.
[0055] In addition, the first end of the first heat spreader 1 and the first end of the second heat spreader 2 are at least partially overlapped in the radial direction of the workpiece to be cooled; the second end of the first heat spreader 1 and the second end of the second heat spreader 2 are at least partially overlapped in the radial direction of the workpiece to be cooled. In this way, the first heat spreader 1 and the second heat spreader 2 can cooperate to form an oil retaining structure that surrounds more than one circle of the workpiece to be cooled, which serves as a liquid retaining ring for the workpiece to be cooled, thereby ensuring that the coolant can flow through each area of the workpiece to be cooled, and accurately guides the sprayed coolant to the high-temperature area of the workpiece to be cooled, thereby effectively improving the cooling efficiency; utilizing the high thermal conductivity of the heat spreader, the heat from the high-temperature area of the workpiece to be cooled is transferred to the low-temperature area, thereby significantly improving the problem of uneven local heat dissipation of the workpiece to be cooled, and improving the heat dissipation effect.
[0056] In one embodiment, referring to Figure 1 The heat dissipation assembly also includes a fastener 3, which is used to fix the first heat sink 1 and / or the second heat sink 2 on the workpiece to be cooled.
[0057] As an example, the heat dissipation assembly further includes fasteners 3, which are used to fix the first vapor chamber 1 and / or the second vapor chamber 2 on the workpiece to be cooled, so as to facilitate installation and removal of the first vapor chamber 1 and the second vapor chamber 2. Specifically, the fasteners 3 include multiple fasteners, which are evenly spaced along the circumference of the workpiece to be cooled, and some fasteners 3 only act on the first vapor chamber 1 and the workpiece to be cooled, some fasteners 3 only act on the second vapor chamber 2 and the workpiece to be cooled, and some fasteners 3 act on the first vapor chamber 1, the second vapor chamber 2 and the workpiece to be cooled.
[0058] In one embodiment, referring to Figure 1 The fastener 3 includes a first strap 31, a second strap 32 and a third strap 33; the first strap 31 is used to fix the first heat spreader 1 and the workpiece to be cooled; the second strap 32 is used to fix the second heat spreader 2 and the workpiece to be cooled; the third strap 33 is used to fix the first heat spreader 1, the second heat spreader 2 and the workpiece to be cooled.
[0059] As an example, the fastener 3 includes a first strap 31, a second strap 32 and a third strap 33; the first strap 31, the second strap 32 and the third strap 33 are evenly spaced along the circumference of the workpiece to be cooled, the first strap 31 is used to fix the first heat spreader 1 on the workpiece to be cooled, the second strap 32 is used to fix the second heat spreader 2 on the workpiece to be cooled; the third strap 33 is used to fix the first heat spreader 1 and the second heat spreader 2 on the workpiece to be cooled at the same time, so that the first heat spreader 1 and the second heat spreader 2 can be installed and disassembled by tightening or loosening multiple straps, which facilitates the installation of the heat dissipation component and saves time while ensuring the reliability of the installation. Among them, the strap is made of a high molecular polymer material, which has physical properties such as high temperature resistance and good insulation.
[0060] 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, efficiently suppressing the temperature rise of the motor is the key to the development of the motor in the direction of high efficiency, high stability, and high reliability.
[0061] 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 two heat sinks cooperate 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.
[0062] As an example, the heat dissipation structure includes a liquid spray pipe and a heat dissipation component, and the heat dissipation component includes two heat spreaders; both heat spreaders are arc-shaped heat spreaders, and both heat spreaders are connected to the workpiece to be cooled; either one of the two heat spreaders is arranged on the inner circle of the workpiece to be cooled, and the other is arranged on the outer circle of the workpiece to be cooled; at least part of either one of the two heat spreaders is located in the low-temperature area of the workpiece to be cooled, and at least part of the other is located in the high-temperature area of the workpiece to be cooled; when in use, the liquid spray pipe is arranged relative to the low-temperature area of the workpiece to be cooled, so as to spray coolant on the low-temperature area of the workpiece to be cooled; the two heat spreaders are used to cooperate 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, 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.
[0063] The utility model embodiment provides a stator structure, referring to Figure 1 and Figure 2 , including a stator winding 4, a stator core 5 and a heat dissipation component; the stator winding 4 is a workpiece to be cooled; the stator winding 4 is passed through the stator core 5, and the stator winding 4 protrudes from the stator core 5 in the axial direction to form two winding ends; a heat dissipation component is provided on the outer ring of each winding end.
[0064] As an example, the stator structure includes a stator winding 4, a stator core 5 and a heat dissipation component; the stator winding 4 is a workpiece to be dissipated, the stator winding 4 is inserted into the stator core 5, and the stator winding 4 protrudes from the stator core 5 in the axial direction to form two winding ends; a heat dissipation component is provided on the outer ring of each winding end, and the two heat dissipation components are used to evenly heat the two winding ends of the stator winding 4, and the sprayed coolant is accurately guided to the high-temperature area of the stator winding 4, effectively improving the cooling efficiency; the high thermal conductivity of the heat spreader of the heat dissipation component is utilized to transfer the heat of the high-temperature area of the stator winding 4 to the low-temperature area, significantly improving the problem of uneven local heat dissipation of the stator winding 4 and improving the heat dissipation effect.
[0065] When using coolant to cool the stator winding 4, the coolant will generally only be sprayed on part of the stator winding 4, and cannot be used to cool other parts of the workpiece to be cooled, resulting in uneven heat dissipation of the stator winding 4. To address this problem, a heat dissipation component is designed to include two heat spreaders; either one of the two heat spreaders is set on the inner ring of the stator winding 4, and the other is set on the outer ring of the stator winding 4; both heat spreaders are in contact with the stator winding 4; at least part of either one of the two heat spreaders is located in the low-temperature area of the stator winding 4, and at least part of the other is located in the high-temperature area of the stator winding 4; when the coolant is sprayed onto the stator winding 4, in the inner ring of the stator winding 4, a heat spreader can serve as an inner ring liquid retaining ring of the stator winding 4 (the inner ring liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the inner ring of the stator winding 4), which can receive the coolant and guide the coolant to make the coolant The cooling liquid flows along the inner circle of the stator winding 4; in the outer circle of the stator winding 4, another heat spreader can be used as the outer circle liquid retaining ring of the stator winding 4 (the outer circle liquid retaining ring is a structure for receiving and guiding the cooling liquid sprayed on the outer circle of the stator winding 4), which can receive the cooling liquid and guide the cooling liquid so that the cooling liquid flows along the outer circle of the stator winding 4; the two heat spreaders cooperate to form a complete liquid retaining ring, which guides the cooling liquid sprayed to the low-temperature area of the inner and outer circles of the stator winding 4 to the high-temperature area of the inner and outer circles of the stator winding 4, thereby realizing the heat transfer from the high-temperature area of the stator winding 4 to the low-temperature area, so as to realize cooling of the high-temperature area, accurately guide the sprayed cooling liquid to the high-temperature area of the stator winding 4, and effectively improve the cooling efficiency of the cooling liquid; utilize the high thermal conductivity of the heat spreader to transfer the heat from the high-temperature area of the stator winding 4 to the low-temperature area, significantly improve the problem of uneven local heat dissipation of the stator winding 4, and improve the heat dissipation efficiency.
[0066] 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 (thermal conductivity of air is 0.03W / m·k, thermal conductivity of the heat spreader is >2000W / m·k) and a reasonable structural design, when the coolant is sprayed onto the stator winding 4, the heat spreader can serve as a liquid retaining ring of the stator winding 4 on the periphery of the stator winding 4, receiving and guiding the coolant, and quickly transferring the heat from the high-temperature area of the stator winding 4 to the low-temperature area of the stator winding 4, thereby improving the temperature uniformity of the stator winding 4 and improving the heat dissipation effect of the motor. It can significantly improve the heat dissipation of the copper wire winding in the stator winding 4, reduce the temperature of the stator winding 4, 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.
[0067] In one embodiment, referring to Figure 1, the arc length of one of the two heat spreaders is greater than half of the inner circle circumference of the winding end; the width of one of the two heat spreaders is less than or equal to the width of the winding end along the axial direction; the arc length of the other of the two heat spreaders is greater than half of the outer circle circumference of the winding end; the width of the other of the two heat spreaders is less than or equal to the width of the winding end along the axial direction.
[0068] As an example, the two heat spreaders can be adjusted according to the size of the stator winding 4. The heat spreaders are in the shape of a semicircular flat strip. The arc length of one of the two heat spreaders is greater than half of the inner circle circumference of the winding end; the width of one of the two heat spreaders is less than or equal to the width of the winding end along the axial direction; the arc length of the other of the two heat spreaders is greater than half of the outer circle circumference of the winding end; the width of the other of the two heat spreaders is less than or equal to the width of the winding end along the axial direction. The two heat spreaders are arranged in this way to form an oil retaining structure that surrounds the stator winding 4 more than one circle, which serves as a liquid retaining ring of the stator winding 4, ensuring that the coolant can flow through every area of the stator winding 4, ensuring that the heat spreader can effectively and evenly dissipate heat, and reducing the material used for the heat spreader, saving manufacturing costs.
[0069] An embodiment of the utility model provides a motor, comprising a stator structure.
[0070] As an example, the stator structure includes a stator winding 4, a stator core 5 and a heat dissipation component; the stator winding 4 is a workpiece to be dissipated, the stator winding 4 is inserted into the stator core 5, and the stator winding 4 protrudes from the stator core 5 in the axial direction to form two winding ends; a heat dissipation component is provided on the outer ring of each winding end, and the two heat dissipation components are used to evenly heat the two winding ends of the stator winding 4, and the sprayed coolant is accurately guided to the high-temperature area of the stator winding 4, effectively improving the cooling efficiency; the high thermal conductivity of the heat spreader of the heat dissipation component is utilized to transfer the heat of the high-temperature area of the stator winding 4 to the low-temperature area, significantly improving the problem of uneven local heat dissipation of the stator winding 4 and improving the heat dissipation effect.
[0071] When using coolant to cool the stator winding 4, the coolant will generally only be sprayed on part of the stator winding 4, and cannot be used to cool other parts of the workpiece to be cooled, resulting in uneven heat dissipation of the stator winding 4. To address this problem, a heat dissipation component is designed to include two heat spreaders; either one of the two heat spreaders is set on the inner ring of the stator winding 4, and the other is set on the outer ring of the stator winding 4; both heat spreaders are in contact with the stator winding 4; at least part of either one of the two heat spreaders is located in the low-temperature area of the stator winding 4, and at least part of the other is located in the high-temperature area of the stator winding 4; when the coolant is sprayed onto the stator winding 4, in the inner ring of the stator winding 4, a heat spreader can serve as an inner ring liquid retaining ring of the stator winding 4 (the inner ring liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the inner ring of the stator winding 4), which can receive the coolant and guide the coolant, so that The coolant flows along the inner ring of the stator winding 4; in the outer ring of the stator winding 4, another heat spreader can serve as the outer ring liquid retaining ring of the stator winding 4 (the outer ring liquid retaining ring is a structure for receiving and guiding the coolant sprayed on the outer ring of the stator winding 4), which can receive the coolant and guide the coolant so that the coolant flows along the outer ring of the stator winding 4; the two heat spreaders cooperate to form a complete liquid retaining ring, which guides the coolant sprayed to the low-temperature area of the inner and outer rings of the stator winding 4 to the high-temperature area of the inner and outer rings of the stator winding 4, thereby realizing the heat transfer from the high-temperature area of the stator winding 4 to the low-temperature area, so as to cool the high-temperature area, accurately guide the sprayed coolant to the high-temperature area of the stator winding 4, and effectively improve the cooling efficiency of the coolant; utilize the high thermal conductivity of the heat spreader to transfer the heat from the high-temperature area of the stator winding 4 to the low-temperature area, significantly improve the problem of uneven local heat dissipation of the stator winding 4, and improve the heat dissipation efficiency.
[0072] 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 (thermal conductivity of air is 0.03W / m·k, thermal conductivity of the heat spreader is >2000W / m·k) and a reasonable structural design, when the coolant is sprayed onto the stator winding 4, the heat spreader can serve as a liquid retaining ring of the stator winding 4 on the periphery of the stator winding 4, receiving and guiding the coolant, and quickly transferring the heat from the high-temperature area of the stator winding 4 to the low-temperature area of the stator winding 4, thereby improving the temperature uniformity of the stator winding 4 and improving the heat dissipation effect of the motor. It can significantly improve the heat dissipation of the copper wire winding in the stator winding 4, reduce the temperature of the stator winding 4, 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.
[0073] 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: Includes two vapor chambers; The two heat spreaders are both arc-shaped heat spreaders, and the two heat spreaders are both connected to the workpiece to be cooled; Any one of the two heat sinks is arranged on the inner circle of the workpiece to be cooled, and the other is arranged on the outer circle of the workpiece to be cooled; At least a portion of any one of the two vapor chambers is located in a low-temperature region of the workpiece to be cooled, and at least a portion of the other vapor chamber is located in a high-temperature region of the workpiece to be cooled.
2. The heat dissipation assembly according to claim 1, characterized in that: The opening of the heat spreader arranged on the inner circle of the workpiece to be cooled faces downward, and the opening of the heat spreader arranged on the outer circle of the workpiece to be cooled faces upward.
3. The heat dissipation assembly according to claim 1, characterized in that: The two vapor chambers are respectively a first vapor chamber and a second vapor chamber; The first vapor chamber is disposed in the inner circle of the workpiece to be cooled, and the first vapor chamber comprises a first body, at least a portion of which is located in the low temperature area of the workpiece to be cooled; The second heat spreader is arranged on the outer circle of the workpiece to be cooled. The second heat spreader includes a second body and a guide section extending from the second body away from the workpiece to be cooled. At least part of the second body is located in the high temperature area of the workpiece to be cooled.
4. The heat dissipation assembly according to claim 3, characterized in that: The first body comprises a first condensation section and two first evaporation sections extending from both ends of the first condensation section, and the first condensation section is located in a low temperature area of the workpiece to be cooled; The second body includes a second evaporation section and two second condensation sections extending from two ends of the second evaporation section, each of the second condensation sections extends a guide section, and the second evaporation section is located in a high temperature area of the workpiece to be cooled.
5. The heat dissipation assembly according to claim 3, characterized in that: The first end of the first vapor chamber at least partially overlaps with the first end of the second vapor chamber along the radial direction of the workpiece to be cooled; The second end of the first vapor chamber at least partially overlaps with the second end of the second vapor chamber along the radial direction of the workpiece to be cooled.
6. The heat dissipation assembly according to claim 3, characterized in that: The heat dissipation assembly further includes a fastener, and the fastener is used to fix the first heat spreader and / or the second heat spreader on the workpiece to be cooled.
7. The heat dissipation assembly according to claim 6, characterized in that: The fastener includes a first strap, a second strap, and a third strap; The first strap is used to fix the first heat sink and the workpiece to be cooled; The second strap is used to fix the second vapor chamber and the workpiece to be cooled; The third strap is used to fix the first heat spreader, the second heat spreader and the workpiece to be cooled.
8. 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 7; 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 two heat spreaders cooperate 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.
9. A stator structure, characterized in that: It comprises a stator winding, a stator core and a heat dissipation assembly according to any one of claims 1 to 7; 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 each winding end.
10. The stator structure according to claim 9, characterized in that: The arc length of one of the two heat spreaders is greater than half of the circumference of the inner circle of the winding end; The width of one of the two heat spreaders is less than or equal to the width of the winding end in the axial direction; The arc length of the other of the two heat spreaders is greater than half of the circumference of the outer circle of the winding end; The width of the other of the two heat spreaders is less than or equal to the width of the winding end along the axial direction.
11. A motor, characterized in that: Comprising the stator structure according to any one of claims 9 to 10.
12. A car, characterized in that: Comprising the motor as claimed in claim 11.