Flat wire motor, driving module and automobile
By integrating the stator winding lead wire into the oil injection ring and using multiple bent sections and annular table design, the problem of large space and difficult heat cooling in flat wire motors is solved, achieving a more efficient cooling effect.
Patent Information
- Application Number
- CN202420920520.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-29
AI Technical Summary
In existing flat wire motors, the lead wires and the oil injection ring are independent parts, resulting in large space and difficult to effectively cool down heat.
The stator winding lead wire is integrated into the oil injection ring, heat absorption and cooling is indirectly absorbed by cooling oil, and the heat transfer path and contact area are improved through the multi-bend section and annular table design.
It reduces the space proportion inside the flat wire motor, and effectively reduces the temperature of the stator winding lead wire, improving cooling efficiency.
Smart Images
Figure CN222262293U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of motor technology, and specifically relates to a flat wire motor, a drive module and a car. Background Art
[0002] The stator end winding lead wire and the oil injection ring included in the existing flat wire motor are independent parts. Since there are many lead wires, the lead wires and the oil injection ring need to occupy space separately during the layout process. This design method is not conducive to reducing the volume of the flat wire motor. In addition, since the lead wires will generate heat during the conduction of current, when the two are two independent parts, it is not conducive to the cold oil flowing out of the oil injection ring to absorb heat and cool the lead wires. Utility Model Content
[0003] One of the invention purposes of the present application is to provide a flat wire motor, in which the stator end winding lead wire of the flat wire motor is integrated with the oil injection ring. In this way, on the one hand, the space occupied by the two inside the flat wire motor can be reduced, and on the other hand, the heat in the lead wire can be transferred to the oil injection ring, and the oil injection ring is cooled by oil, thereby indirectly absorbing heat and cooling the lead wire.
[0004] Another object of the present invention is to provide a driving module including the flat wire motor.
[0005] Another invention object of the present application is to provide a car including the above-mentioned drive module.
[0006] According to an embodiment of the present application, a first aspect provides a flat wire motor, the flat wire motor comprising:
[0007] case;
[0008] A stator core, wherein the stator core is disposed in the inner cavity of the housing, and a first oil passage is formed between the stator core and the inner cavity of the housing;
[0009] A stator end winding is arranged at one end of the stator core, a second oil passage is formed between the stator end winding and the inner cavity of the housing, the second oil passage is communicated with the first oil passage, and the stator end winding is provided with a stator winding lead wire;
[0010] An oil injection ring is arranged in the inner cavity of the shell and corresponds to the stator end winding. The stator winding lead wire part is integrated in the oil injection ring. The oil injection ring is provided with an oil injection hole. The oil injection hole corresponds to the stator end winding and is connected to the second oil channel.
[0011] In one embodiment, the stator winding lead wire includes a first bending section and a second bending section, and parts of the first bending section and parts of the second bending section are respectively integrated in the oil injection ring, the first bending section extends in the axial direction of the oil injection ring, and the second bending section extends in the radial direction of the oil injection ring.
[0012] In one embodiment, the oil injection ring further includes a first annular platform located on the upper side of the oil injection ring and a second annular platform located on the lower side of the oil injection ring, the first annular platform extends in the radial direction away from the oil injection ring and is close to the housing, the second annular platform extends in the radial direction of the oil injection ring and is close to the stator end winding, the first bending section is partially integrated in the first annular platform, the second bending section is partially integrated in the second annular platform, and the height dimensions of the first annular platform and the second annular platform are both smaller than the height dimension of the oil injection ring.
[0013] In one embodiment, the stator winding lead-out line also includes a third bending segment, the third bending segment is connected to the second bending segment, the extension direction of the third bending segment is the same as the extension direction of the first bending segment and the third bending segment is located between the injection ring and the stator end winding, and the first bending segment, the second bending segment and the third bending segment form a concave structure.
[0014] In one embodiment, the oil injection ring is made of plastic material, and the stator winding lead wire is integrally formed with the oil injection ring.
[0015] In one embodiment, the stator winding lead wires include a plurality of adjacent lead wires, and an insulating layer is provided between the lead wires.
[0016] In one embodiment, the material of the stator winding lead wire is copper.
[0017] In one embodiment, there are multiple fuel injection holes, and the multiple fuel injection holes are distributed around the circumference of the fuel injection ring.
[0018] According to an embodiment of the present application, a second aspect provides a driving module, wherein the driving module includes the flat wire motor.
[0019] According to an embodiment of the present application, a third aspect provides a car, which includes the drive module.
[0020] The flat wire motor of the present application integrates the stator winding lead wire part into the oil injection ring, thereby integrating the two originally independent components into one, thereby reducing the space occupied by the oil injection ring and the stator winding lead wire in the flat wire motor. At the same time, during the oil circuit of the flat wire motor, the cooling oil can contact the outside of the oil injection ring and can also flow in the oil injection hole of the oil injection ring, thereby indirectly absorbing the heat transferred from the stator winding lead wire to the oil injection ring, thereby reducing the temperature of the stator winding lead wire. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a cross-sectional schematic diagram of a flat wire motor in one embodiment of the present application;
[0022] Figure 2 This is a cross-sectional schematic diagram of an oil injection ring in one embodiment of the present application;
[0023] Figure 3 for Figure 2 A partial enlarged schematic diagram in the middle;
[0024] Figure 4 This is the structural intention of the oil injection ring in one embodiment of the present application.
[0025] Description of Figure Numbers:
[0026] 100, housing; 110, first oil passage; 120, second oil passage;
[0027] 200, stator core;
[0028] 300, stator end winding; 310, stator winding lead wire; 311, first bending section;
[0029] 312, second bending section; 313, third bending section;
[0030] 400, fuel injection ring; 410, fuel injection hole; 420, first annular platform; 430, second annular platform. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0032] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention.
[0033] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.
[0034] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0035] As described in the background, the stator end winding lead wire and the fuel injection ring included in the existing flat wire motor are independent parts. Due to the large number of lead wires, the lead wires and the fuel injection ring need to occupy space separately during the layout process. This design method is not conducive to reducing the volume of the flat wire motor. In addition, since the lead wires will generate heat during the conduction of current, when the two are two independent parts, it is not conducive to the cold oil flowing out of the fuel injection ring to absorb heat and cool the lead wires. In order to better solve this problem, the researchers proposed a flat wire motor, in which the fuel injection ring and the stator winding lead wires are integrated into a flat wire motor, thereby reducing the space occupied by the fuel injection ring and the stator winding lead wires in the flat wire motor; at the same time, the heat generated by the stator winding lead wires can be conducted to the fuel injection ring, thereby indirectly absorbing the heat of the stator winding lead wires through the fuel injection ring. Further, the researchers also proposed a drive module including the flat wire motor, and a car including the drive module.
[0036] like Figure 1 As shown, Figure 1The flat wire motor in one embodiment of the present application is a cross-sectional schematic diagram. The flat wire motor includes: a housing 100, a stator core 200, a stator end winding 300 and an oil spray ring 400, wherein the housing 100 is used to accommodate the stator core 200, the stator end winding 300 and the oil spray ring 400, the stator end winding 300 is arranged at the end of the stator core 200, the stator end winding 300 is provided with a stator winding lead wire 310, the stator winding lead wire 310 is used to conduct current, and the oil spray ring 400 can spray cooling oil to cool the stator core 200 and the stator end winding 300. In this embodiment, the researchers integrated the stator winding lead wire 310 into the oil injection ring 400 to reduce the space occupied by the oil injection ring 400 and the stator winding lead wire 310 inside the flat wire motor. At the same time, the stator winding lead wire 310 can also transfer heat to the oil injection ring 400, and the heat of the stator winding lead wire 310 is absorbed by the oil injection ring 400.
[0037] Specifically, the stator core 200 is arranged in the inner cavity of the shell 100, wherein a first oil channel 110 is formed between the stator core 200 and the inner cavity of the shell 100; the stator end winding 300 is arranged at one end of the stator core 200, and a second oil channel 120 is formed between the stator end winding 300 and the inner cavity of the shell 100, the second oil channel 120 is connected with the first oil channel 110, and the stator end winding 300 is provided with a stator winding lead wire 310; the oil injection ring 400 is arranged in the inner cavity of the shell 100 and corresponds to the stator end winding 300, the stator winding lead wire 310 is partially integrated in the oil injection ring 400, and the oil injection ring 400 is provided with an oil injection hole 410, the oil injection hole 410 corresponds to the stator end winding 300 and is connected with the second oil channel 120.
[0038] In this embodiment, the researchers integrated the stator winding lead wire 310 with the oil injection ring 400, that is, the two originally independent parts were integrated into one part. In this way, the space occupied by the oil injection ring 400 and the stator winding lead wire 310 inside the flat wire motor can be reduced. In addition, in the flat wire motor, the cooling oil can flow between the first oil channel 110 and the second oil channel 120, and spray the cooling oil to the stator core 200 and the stator end winding 300 through the oil injection hole 410 in the oil injection ring 400. Since the stator winding lead wire 310 is integrated in the oil injection ring 400, the heat source generated in the stator winding lead wire 310 can be transferred to the oil injection ring 400, and the heat in the oil injection ring 400 can be absorbed by the cooling oil to cool down. In this way, the stator winding lead wire 310 can be indirectly cooled down.
[0039] In one embodiment, see Figure 2 and Figure 3As shown, the stator winding lead wire 310 includes a first bending segment 311 and a second bending segment 312. Parts of the first bending segment 311 and the second bending segment 312 are respectively integrated in the injection ring 400. The first bending segment 311 extends in the axial direction of the injection ring 400, and the second bending segment 312 extends in the radial direction of the injection ring 400.
[0040] In this embodiment, the researchers integrated the first bending section 311 and the second bending section 312 in the stator winding lead wire 310 with the injection ring 400 respectively, so as to fix the stator winding lead wire 310. In addition, the first bending section 311 and the second bending section 312 are tightly integrated with the injection ring 400, which increases the path for heat to be transferred from the stator winding lead wire 310 to the injection ring 400. This integration method can effectively reduce the temperature of the stator winding lead wire 310. Specifically in this embodiment, the first bending section 311 and the second bending section 312 constitute a multi-dimensional contact structure. The first bending section 311 extends along the axial direction of the injection ring 400 to ensure contact with the injection ring 400 in the longitudinal direction; the second bending section 312 extends along the radial direction to further increase the contact area with the injection ring 400. This design provides more contact points and paths, so that heat is transferred more effectively. In this embodiment, the multi-directional bending structure helps to disperse the heat more evenly on the oil injection ring 400, thereby avoiding the heat concentration at a certain point. In addition, since the first bending section 311 extends along the axial direction, the second bending section 312 extends along the radial direction, and the oil injection ring 400 is a fixed structure, the oil injection ring 400 can provide multi-directional support for the two bending sections, thereby improving the stability of the stator winding lead wire 310.
[0041] Further, in one embodiment, see Figure 2 and Figure 3 As shown, the oil injection ring 400 further includes a first annular platform 420 located at the upper side of the oil injection ring 400 and a second annular platform 430 located at the lower side of the oil injection ring 400. The first annular platform 420 extends in the radial direction away from the oil injection ring 400 and is close to the housing 100, and the second annular platform 430 extends in the radial direction of the oil injection ring 400 and is close to the stator end winding 300. The first bending section 311 is partially integrated in the first annular platform 420, and the second bending section 312 is partially integrated in the second annular platform 430. The height dimensions of the first annular platform 420 and the second annular platform 430 are both smaller than the height dimension of the oil injection ring 400.
[0042] In this embodiment, when the stator winding lead wire 310 includes the first bending section 311 and the second bending section 312, if the first bending section 311 is directly integrated into the oil injection ring 400, this may reduce the area of the first bending section 311 directly contacting the cooling oil near the oil injection ring 400, affecting the temperature reduction rate of the stator winding lead wire 310; in addition, the length of the second bending section 312 will determine the thickness of the oil injection ring 400 in the radial direction. If the oil injection ring 400 is designed according to the length of the second bending section 312, 0The size in the radial direction determines the overall thickness of the oil injection ring 400. This design will cause the overall size of the oil injection ring 400 to be larger, which reduces the volume ratio of the cooling oil between the oil injection ring 400 and the stator end winding 300, and affects the heat absorption effect of the cooling oil on the oil injection ring 400 and the stator end winding 300. For this reason, the researchers set a second annular platform 430 in the oil injection ring 400, and integrated the second bending section 312 in the annular platform to reduce the thickness ratio of the oil injection ring 400 in the radial direction.
[0043] Furthermore, in one embodiment, referring to 2 to Figure 4 As shown, the stator winding lead-out line 310 also includes a third bending segment 313, which is connected to the second bending segment 312. The extension direction of the third bending segment 313 is the same as the extension direction of the first bending segment 311, and the third bending segment 313 is located between the injection ring 400 and the stator end winding 300. The first bending segment 311, the second bending segment 312 and the third bending segment 313 form a concave structure.
[0044] In this embodiment, the researchers further designed the stator winding lead wire 310 as the third bending section 313, and designed the first bending section 311, the second bending section 312 and the third bending section 313 as a concave structure, which can effectively disperse the mechanical stress applied from the outside. In addition, after the third bending section 313 is located between the oil injection ring 400 and the stator end winding 300, it can directly contact the cooling oil between the oil injection ring 400 and the stator end winding 300, thereby absorbing the heat of the stator winding lead wire 310 more quickly.
[0045] In one embodiment, the material of the oil injection ring 400 is a plastic material, and the stator winding lead wire 310 and the oil injection ring 400 are integrally formed.
[0046] In this embodiment, the researchers set the material of the oil injection ring 400 to be plastic material, so during the molding process of the oil injection ring 400, the stator winding lead wire 310 is arranged in the oil injection ring 400, and when the oil injection ring 400 is molded and cooled, the stator winding lead wire 310 is integrated in the oil injection ring 400. In this way, the oil injection ring 400 and the stator winding lead wire 310 can be arranged in an integrated manner, and when the oil injection ring 400 is fixed, the oil injection ring 400 can provide support for the stator winding lead wire 310.
[0047] In one embodiment, the stator winding lead wires 310 include a plurality of adjacent lead wires, and an insulating layer is disposed between the lead wires.
[0048] In this embodiment, the number of stator winding lead wires 310 is determined by the number of phases and paths in the flat wire motor. In order to avoid interference between the stator winding lead wires 310 when conducting current, researchers set an insulating layer between the stator winding lead wires 310.
[0049] In one embodiment, the material of the stator winding lead wire 310 is copper. In this embodiment, the researchers set the material of the stator winding lead wire 310 to be copper, on the one hand, when the stator winding lead wire 310 is made of copper, it is conducive to deformation and bending; on the other hand, when the stator winding lead wire 310 is made of copper, it can better conduct current and reduce current loss.
[0050] In one embodiment, see Figure 3 and Figure 4 As shown, there are multiple fuel injection holes 410 , and the multiple fuel injection holes 410 are distributed around the circumference of the fuel injection ring 400 .
[0051] In this embodiment, the researchers designed the number of oil injection holes 410 to be multiple, and distributed the multiple oil injection holes 410 circumferentially around the oil injection ring 400, so that the cooling oil can be sprayed into the stator end winding 300 from multiple directions, thereby accelerating the cooling of the stator end winding 300.
[0052] The present application also proposes a driving module, in which the above-mentioned flat wire motor is included. Since the flat wire motor in the present application integrates the oil injection ring 400 with the stator winding lead wire 310, the proportion of the oil injection ring 400 and the stator winding lead wire 310 in the flat wire motor can be further reduced; in addition, the heat of the stator winding lead wire 310 can be transferred to the oil injection ring 400, and the heat of the stator winding lead wire 310 can be indirectly absorbed by the oil injection ring 400.
[0053] The present application also proposes a car, wherein the car includes the above-mentioned drive module.
[0054] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0055] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.
Claims
1. A flat wire motor, characterized in that: The flat wire motor comprises: Housing (100); A stator core (200), the stator core (200) being arranged in the inner cavity of the housing (100), and a first oil passage (110) being formed between the stator core (200) and the inner cavity of the housing (100); A stator end winding (300) is arranged at one end of the stator core (200); a second oil passage (120) is formed between the stator end winding (300) and the inner cavity of the housing (100); the second oil passage (120) is communicated with the first oil passage (110); and the stator end winding (300) is provided with a stator winding lead wire (310); An oil injection ring (400) is arranged in the inner cavity of the housing (100) and corresponds to the stator end winding (300); the stator winding lead wire (310) is partially integrated in the oil injection ring (400); the oil injection ring (400) is provided with an oil injection hole (410); the oil injection hole (410) corresponds to the stator end winding (300) and is connected to the second oil channel (120).
2. The flat wire motor according to claim 1, characterized in that: The stator winding lead wire (310) comprises a first bending section (311) and a second bending section (312); a portion of the first bending section (311) and a portion of the second bending section (312) are respectively integrated in the oil injection ring (400); the first bending section (311) extends in the axial direction of the oil injection ring (400), and the second bending section (312) extends in the radial direction of the oil injection ring (400).
3. The flat wire motor according to claim 2, characterized in that: The oil injection ring (400) further comprises a first annular platform (420) located on the upper side of the oil injection ring (400) and a second annular platform (430) located on the lower side of the oil injection ring (400); the first annular platform (420) extends in a radial direction away from the oil injection ring (400) and is close to the housing (100); the second annular platform (430) extends in a radial direction of the oil injection ring (400) and is close to the stator end winding (300); the first bending section (311) is partially integrated in the first annular platform (420); the second bending section (312) is partially integrated in the second annular platform (430); and the height dimensions of the first annular platform (420) and the second annular platform (430) are both smaller than the height dimension of the oil injection ring (400).
4. The flat wire motor according to claim 3, characterized in that: The stator winding lead wire (310) further comprises a third bending section (313), the third bending section (313) being connected to the second bending section (312), the extension direction of the third bending section (313) being the same as the extension direction of the first bending section (311), and the third bending section (313) being located between the oil injection ring (400) and the stator end winding (300), and the first bending section (311), the second bending section (312) and the third bending section (313) forming a concave structure.
5. The flat wire motor according to claim 1, characterized in that: The material of the oil injection ring (400) is a plastic material, and the stator winding lead wire (310) and the oil injection ring (400) are integrally formed.
6. The flat wire motor according to claim 1, characterized in that: The stator winding lead wires (310) include a plurality of adjacent lead wires, and an insulating layer is provided between the lead wires.
7. The flat wire motor according to claim 1, characterized in that: The material of the stator winding lead wire (310) is copper.
8. The flat wire motor according to claim 1, characterized in that: There are multiple oil injection holes (410), and the multiple oil injection holes (410) are distributed around the circumference of the oil injection ring (400).
9. A driving module, characterized in that: The driving module comprises the flat wire motor as claimed in any one of claims 1 to 8.
10. An automobile, characterized in that: The vehicle comprises the drive module as claimed in claim 9.