Stator structure and motorized equipment
By designing the cooling channel inside the flat wire winding in the stator structure of the new energy motor, the problem of unsatisfactory heat dissipation effect of the motor is solved, and more efficient heat dissipation effect and lower temperature are achieved.
Patent Information
- Application Number
- CN202421241778.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-31
AI Technical Summary
During the heat dissipation process of existing new energy motors, the inner winding of the stator tank does not directly contact the coolant, resulting in unsatisfactory cooling effect, which in turn makes the inner winding of the iron core too high.
A stator structure is designed, including a stator core and a flat wire winding. A cooling channel is provided inside the flat wire winding, and the cooling channel is used to receive coolant for heat dissipation.
By directly introducing the coolant into the cooling channel of the flat wire winding, the heat dissipation ability of the motor is significantly improved, the temperature of the inner winding of the iron core is reduced, and the coolant leakage is avoided, simplifying the assembly of the stator structure.
Smart Images
Figure CN222654906U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of motor technology, and in particular to a stator structure and a motorized device. Background Art
[0002] Nowadays, the global demand for new energy vehicles is increasing, and the popularity of electric vehicles has become an irreversible trend. At the same time, the development of new energy motors is also becoming more and more rapid.
[0003] One of the limiting factors in the development of new energy motors is their heat dissipation capacity. At present, new energy motors generally use motor yoke cooling and end spray oil cooling. In this cooling method, the heat dissipated by the windings in the stator slots of the motor reaches the stator yoke through heat transfer and is then taken away by the coolant in the yoke. The windings in the slots are not in direct contact with the coolant, so the cooling effect is not ideal, which leads to the problem of excessive winding temperature in the core during the heat dissipation process of the new energy motor. Utility Model Content
[0004] An embodiment of the present application provides a stator structure to solve the problem that the windings in the slots of the existing stator structure are not in direct contact with the coolant during the heat dissipation process, resulting in an unsatisfactory cooling effect, and further causing the temperature of the windings in the iron core to be too high during the heat dissipation process of the new energy motor.
[0005] In a first aspect, an embodiment of the present application provides a stator structure, including:
[0006] A stator core, wherein the stator core is provided with stator slots in a radial direction, and the stator slots extend in an axial direction of the stator core;
[0007] A flat wire winding is arranged in the stator slot, and a cooling channel is opened inside the flat wire winding, and the cooling channel is used to receive a coolant to dissipate heat from the stator structure.
[0008] In one embodiment, the cooling channel is provided through the flat wire winding along the axial direction of the stator core.
[0009] In one embodiment, the flat wire winding comprises at least one flat wire winding segment, which is arranged adjacent to each other along the length direction and / or width direction of the stator slot, wherein the cooling channel is formed inside each of the flat wire winding segments.
[0010] In one embodiment, at least one cooling channel is provided inside each of the flat wire winding segments, wherein the at least one cooling channel inside each of the flat wire winding segments is disposed adjacent to each other.
[0011] In one embodiment, at least one cooling channel inside each of the flat wire winding segments is connected to each other or separated from each other.
[0012] In one embodiment, an opening diameter of the cooling channel inside each of the flat wire winding segments gradually increases or decreases along the length direction and / or width direction of the stator slot.
[0013] In one embodiment, the stator structure further includes an insulating layer, and the insulating layer is disposed between the inner wall of the stator slot and the flat wire winding.
[0014] In one embodiment, the insulating layer covers the inner wall of the stator slot and is wrapped around the flat wire winding.
[0015] In one embodiment, the opening shape of the cooling channel is circular, square or polygonal.
[0016] In a second aspect, an embodiment of the present application further provides a motorized device, comprising a stator structure as described in any of the above embodiments.
[0017] The stator structure provided in the embodiment of the present application includes a stator core and a flat wire winding, wherein the stator core is provided with stator slots along the radial direction, and the stator slots are extended along the axial direction of the stator core, and the stator slots can be used to install and accommodate the flat wire winding. At the same time, the flat wire winding is arranged in the stator slots, and a cooling channel is provided inside the flat wire winding, and the cooling channel is used to receive coolant to dissipate the heat of the stator structure.
[0018] It can be understood that, in the present embodiment, since a cooling channel is provided inside the flat wire winding, when cooling the motor, the coolant can directly enter the cooling channel inside the flat wire winding, thereby the flat wire winding is in direct contact with the coolant (that is, in direct contact with the heat source of the stator structure) to further improve the heat dissipation capacity of the motor; at the same time, since the cooling channel is provided inside the flat wire winding, the flat wire winding circumferentially of the cooling channel can also seal the cooling channel, thereby avoiding leakage of the coolant; in addition, in the present embodiment, since the cooling channel is only provided inside the flat wire winding and no additional heat sink is provided, the flat wire winding can also be normally installed in the stator slot, thereby reducing the difficulty of assembling the stator structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.
[0020] Figure 1 This is a schematic diagram of the overall structure of the stator structure provided in an embodiment of the present application.
[0021] Figure 2 for Figure 1 A schematic diagram of the structure of a partial stator structure is shown.
[0022] Figure 3 A partial structural diagram of a stator structure provided in another embodiment of the present application.
[0023] Figure 4 A partial structural diagram of a stator structure provided in yet another embodiment of the present application.
[0024] Figure 5 A partial structural diagram of a stator structure provided for another embodiment of the present application.
[0025] Description of reference numerals:
[0026] 100, stator structure; 110, stator core; 111, stator slot;
[0027] 120, flat wire winding; 121, first flat wire winding section; 1211, first cooling channel; 122, second flat wire winding section; 1221, second cooling channel; 123, third flat wire winding section; 1231, third cooling channel; 124, fourth flat wire winding section; 1241, fourth cooling channel; 125, fifth flat wire winding section; 1251, fifth cooling channel; 126, sixth flat wire winding section; 1261, sixth cooling channel;
[0028] 130. Insulation layer. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
[0030] Nowadays, the global demand for new energy vehicles is increasing, and the popularity of electric vehicles has become an irreversible trend. At the same time, the development of new energy motors is also becoming more and more rapid.
[0031] One of the limiting factors in the development of new energy motors is their heat dissipation capacity. At present, new energy motors generally use motor yoke cooling and end spray oil cooling. In this cooling method, the heat dissipated by the windings in the stator slots of the motor reaches the stator yoke through heat transfer and is then taken away by the coolant in the yoke. The windings in the slots are not in direct contact with the coolant, so the cooling effect is not ideal, which leads to the problem of excessive winding temperature in the core during the heat dissipation process of the new energy motor.
[0032] Based on the above technical problems, the present application embodiment provides a stator structure 100. For details, please refer to Figure 1 and Figure 2 In this embodiment, the stator structure 100 includes a stator core 110 and a flat wire winding 120, wherein the stator core 110 is provided with stator slots 111 along a radial direction, and the stator slots 111 are extended along an axial direction of the stator core 110, and the stator slots 111 can be used to install and accommodate the flat wire winding 120. At the same time, the flat wire winding 120 is arranged in the stator slots 111, and a cooling channel is provided inside the flat wire winding 120, and the cooling channel is used to receive a coolant to dissipate the heat of the stator structure 100.
[0033] It can be understood that, in the present embodiment, since a cooling channel is provided inside the flat wire winding 120, when cooling the motor, the coolant can directly enter the cooling channel inside the flat wire winding 120, thereby the flat wire winding 120 is in direct contact with the coolant (that is, in direct contact with the heat source of the stator structure 100), so as to further improve the heat dissipation capacity of the motor; at the same time, since the cooling channel is provided inside the flat wire winding 120, the flat wire winding 120 in the circumferential direction of the cooling channel can also seal the cooling channel, so as to avoid leakage of the coolant; in addition, in the present embodiment, since the cooling channel is only provided inside the flat wire winding 120 and no additional heat sink is provided, the flat wire winding 120 can also be normally installed in the stator slot 111, so as to reduce the difficulty of assembling the stator structure 100.
[0034] In some embodiments, a cooling channel can be provided along the axial direction of the stator core 110 and penetrate the flat wire winding 120, thereby not only further increasing the contact area between the coolant and the flat wire winding 120, but also increasing the volume of the cooling channel so that more coolant can enter the cooling channel, thereby further improving the heat dissipation effect on the stator structure 100.
[0035] In some embodiments, Figure 2As shown, the flat wire winding 120 may include at least one flat wire winding 120 segment, and at least one flat wire winding 120 segment is arranged adjacent to each other along the length direction and / or width direction of the stator slot 111. At the same time, a cooling channel may be formed inside each flat wire winding 120 segment, thereby further improving the heat dissipation effect of the stator structure 100.
[0036] Specifically, in this embodiment, if Figure 2 As shown, the flat wire winding 120 may include a first flat wire winding segment 121, a second flat wire winding segment 122, a third flat wire winding segment 123, a fourth flat wire winding segment 124, a fifth flat wire winding segment 125 and a sixth flat wire winding segment 126, wherein the first flat wire winding segment 121 has a first cooling channel 1211 opened inside, the second flat wire winding segment 122 has a second cooling channel 1221 opened inside, the third flat wire winding segment 123 has a third cooling channel 1231 opened inside, the fourth flat wire winding segment 124 has a fourth cooling channel 1241 opened inside, the fifth flat wire winding segment 125 has a fifth cooling channel 1251 opened inside, and the sixth flat wire winding segment 126 has a sixth cooling channel 1261 opened inside, so as to further improve the heat dissipation effect of the stator structure 100 by separating the coolant.
[0037] In some embodiments, see Figure 3 The first flat wire winding segment 121 may have two first cooling channels 1211 disposed inside, wherein the two first cooling channels 1211 are connected to each other, thereby increasing the number of the first cooling channels 1211 to further improve the heat dissipation effect of the stator structure 100; at the same time, further, please continue to refer to Figure 3 The two first cooling channels 1211 can be arranged adjacent to each other, so as to increase the contact area between the coolant and the flat wire winding 120 by diverting the coolant, thereby improving the heat dissipation effect on the stator structure 100; in addition, the two first cooling channels 1211 can also be arranged to be connected to each other, so as to increase the amount of coolant by collecting the coolant, thereby improving the heat dissipation effect on the stator structure 100.
[0038] It should be noted that the present embodiment does not limit the specific number of the first cooling channels 1211 inside the first flat wire winding segment 121, for example, it can be 2, 3 or more, which is not limited here; at the same time, the second flat wire winding segment 122, the third flat wire winding segment 123, the fourth flat wire winding segment 124, the fifth flat wire winding segment 125 and the sixth flat wire winding segment 126 in the present embodiment can all be provided with at least one cooling channel, which is not elaborated here.
[0039] In some embodiments, Figure 4As shown, the opening diameters of the first cooling channel 1211, the second cooling channel 1221, the third cooling channel 1231, the fourth cooling channel 1241, the fifth cooling channel 1251 and the sixth cooling channel 1261 can be gradually increased along the length direction of the stator slot 111 to achieve the purpose of allocating the liquid inflow of different flat wire winding sections according to actual conditions. At the same time, it can be understood that the opening diameters of the first cooling channel 1211, the second cooling channel 1221, the third cooling channel 1231, the fourth cooling channel 1241, the fifth cooling channel 1251 and the sixth cooling channel 1261 can also be gradually reduced along the length direction of the stator slot 111, or gradually increased or gradually decreased along the width direction of the stator slot 111, which is not limited here.
[0040] In some embodiments, Figure 2 As shown, the stator structure 100 may further include an insulating layer 130, wherein the insulating layer 130 is disposed between the inner wall of the stator slot 111 and the flat wire winding 120, so as to prevent the flat wire winding 120 from contacting the stator slot 111 after being broken, thereby preventing leakage. It should be noted that the insulating layer 130 in this embodiment may be made of conventional insulating materials such as mica, asbestos, marble, porcelain, glass or sulfur, which is not limited here.
[0041] For further information, please refer to Figure 2 In this embodiment, the insulating layer 130 can cover the inner wall of the stator slot 111 and be wrapped around the flat wire winding 120, so as to further improve the insulation performance.
[0042] In some embodiments, Figure 2 and Figure 5 As shown, the opening shapes of the first cooling channel 1211, the second cooling channel 1221, the third cooling channel 1231, the fourth cooling channel 1241, the fifth cooling channel 1251 and the sixth cooling channel 1261 can be circular, square or polygonal, which can be adjusted according to actual conditions and are not limited here.
[0043] The present application also provides a motorized device, including the stator structure 100 mentioned in any of the above embodiments. It is understandable that the motorized device provided in this embodiment can be a motor vehicle such as a pickup truck or a car, or a motor vessel such as a ship or a yacht, that is, as long as it includes the above-mentioned stator structure 100, it can be included in the scope of protection of this application.
[0044] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0045] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.
[0046] The stator structure and the motorized equipment provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technicians in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A stator structure, characterized in that: include: A stator core, wherein the stator core is provided with stator slots in a radial direction, and the stator slots extend in an axial direction of the stator core; A flat wire winding is arranged in the stator slot, and a cooling channel is opened inside the flat wire winding, and the cooling channel is used to receive a coolant to dissipate heat from the stator structure.
2. The stator structure according to claim 1, characterized in that: The cooling channel is arranged to penetrate the flat wire winding along the axial direction of the stator core.
3. The stator structure according to claim 1, characterized in that: The flat wire winding includes at least one flat wire winding segment, which is arranged adjacent to each other along the length direction and / or width direction of the stator slot, wherein the cooling channel is formed inside each of the flat wire winding segments.
4. The stator structure according to claim 3, characterized in that: At least one cooling channel is provided inside each of the flat wire winding segments, wherein the at least one cooling channel inside each of the flat wire winding segments is arranged adjacent to each other.
5. The stator structure according to claim 4, characterized in that: The at least one cooling channel inside each of the flat wire winding segments is connected to each other or separated from each other.
6. The stator structure according to claim 3, characterized in that: The opening diameter of the cooling channel inside each of the flat wire winding segments gradually increases or decreases along the length direction and / or width direction of the stator slot.
7. The stator structure according to claim 1, characterized in that: The stator structure further includes an insulating layer disposed between an inner wall of the stator slot and the flat wire winding.
8. The stator structure according to claim 7, characterized in that: The insulating layer covers the inner wall of the stator slot and is wrapped around the flat wire winding.
9. The stator structure according to claim 1, characterized in that: The opening shape of the cooling channel is circular, square or polygonal.
10. A mobile equipment, characterized in that: Comprising the stator structure according to any one of claims 1 to 9.