Oil-cooled flat wire stator core

Abstract

The utility model discloses an oil cooling flat wire stator core contains first stator group, second stator group, third stator group and fourth stator group, first stator group contains a plurality of first stator sheet, and the outer ring of first stator sheet is equipped with a plurality of first stator heat dissipation hole, and second stator group contains a plurality of second stator sheet, and the outer ring of second stator sheet is equipped with a plurality of second stator heat dissipation hole, and third stator group contains a plurality of third stator sheet, and the outer ring of third stator sheet is equipped with a plurality of third stator heat dissipation hole, and fourth stator group contains a plurality of fourth stator sheet, and the outer ring of fourth stator sheet is equipped with a plurality of fourth stator heat dissipation hole, and first stator heat dissipation hole, second stator heat dissipation hole, third stator heat dissipation hole and fourth stator heat dissipation hole constitute the heat dissipation channel of ladder shape. Utilize the heat dissipation channel of ladder shape, realize the all -round coverage of cooling oil to the core groove wall, flat wire crown end and the welding end wire package, avoid partial overheating, and the heat dissipation area is even, and the effect is outstanding, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to an electric motor, and more specifically, to an oil-cooled flat wire stator core. Background Technology

[0002] The popularization of electrification in the commercial vehicle market, especially in the heavy-duty truck sector, is gradually increasing. Whether it is a hybrid or pure electric vehicle, the motor stator generally uses copper round wire winding, and the slot fill factor is not high. Although passenger cars use flat wire winding for industrial automation, the torque is generally small. At present, the demand for high speed, lightweight, high torque, high efficiency and short space in heavy-duty trucks has made the development of new oil-cooled flat wire stator cores suitable for the heavy-duty truck market a top priority for the technological research and development of major motor manufacturers. Utility Model Content

[0003] Therefore, it is necessary to provide an oil-cooled flat wire stator core to address the aforementioned technical problems.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An oil-cooled flat wire stator core, characterized in that the oil-cooled flat wire stator core comprises a first stator group, a second stator group, a third stator group, and a fourth stator group, wherein the first stator group, the second stator group, the third stator group, and the fourth stator group are stacked at a predetermined angle. The first stator assembly comprises a plurality of first stator laminations, and the outer ring of each first stator lamination is provided with a plurality of first stator heat dissipation holes. The second stator assembly comprises a plurality of second stator laminations, and the outer ring of each second stator lamination is provided with a plurality of second stator heat dissipation holes. The third stator assembly comprises a plurality of third stator laminations, and the outer ring of each third stator lamination is provided with a plurality of third stator heat dissipation holes. The fourth stator group comprises a plurality of fourth stator plates, and the outer ring of each fourth stator plate is provided with a plurality of fourth stator heat dissipation holes. The first stator heat dissipation hole, the second stator heat dissipation hole, the third stator heat dissipation hole and the fourth stator heat dissipation hole form a stepped heat dissipation channel.

[0005] In a preferred embodiment of this utility model, the first stator heat dissipation hole, the second stator heat dissipation hole, the third stator heat dissipation hole, and the fourth stator heat dissipation hole are all rectangular holes.

[0006] In a preferred embodiment of this utility model, the first stator lamination, the second stator lamination, the third stator lamination, and the fourth stator lamination are silicon steel sheets.

[0007] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides an oil-cooled flat wire stator core, which utilizes a stepped heat dissipation channel to achieve full coverage of the cooling oil on the core slot wall, the flat wire crown end, and the welded end coil, avoiding local overheating, providing uniform heat dissipation, outstanding effect, and strong practicality. Attached Figure Description

[0008] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0009] Figure 1 This is a three-dimensional structural diagram of the oil-cooled flat wire stator core of this utility model; Figure 2 for Figure 1 A three-dimensional structural diagram of the first stator group of the oil-cooled flat wire stator core; Figure 3 for Figure 2 A magnified view of the details of region A in the diagram; Figure 4 for Figure 1 A schematic diagram of heat dissipation for an oil-cooled flat wire stator core; Figure 5 for Figure 4 A detailed magnified view of region B in the middle; The markings in the diagram are explained as follows: 1. First stator group; 11. First stator lamination; 111. First stator heat dissipation hole; 2. Second stator group; 21. Second stator lamination; 211. Second stator heat dissipation hole; 3. Third stator group; 31. Third stator lamination; 311. Third stator heat dissipation hole; 4. Fourth stator group; 41. Fourth stator lamination; 411. Fourth stator heat dissipation hole; L. Heat dissipation channel. Detailed Implementation

[0010] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0011] like Figures 1 to 3 As shown, the oil-cooled flat wire stator core includes a first stator group 1, a second stator group 2, a third stator group 3, and a fourth stator group 4, which are stacked at a preset angle.

[0012] The first stator group 1 includes a plurality of first stator plates 11, and the outer ring of the first stator plates 11 is provided with a plurality of first stator heat dissipation holes 111.

[0013] The second stator group 2 includes a plurality of second stator plates 21, and the outer ring of the second stator plates 21 is provided with a plurality of second stator heat dissipation holes 211.

[0014] The third stator group 3 includes a plurality of third stator plates 31, and the outer ring of the third stator plates 31 is provided with a plurality of third stator heat dissipation holes 311.

[0015] The fourth stator group 4 includes a plurality of fourth stator plates 41, and the outer ring of the fourth stator plates 41 is provided with a plurality of fourth stator heat dissipation holes 411.

[0016] It should be noted that the first stator heat dissipation hole 111, the second stator heat dissipation hole 211, the third stator heat dissipation hole 311 and the fourth stator heat dissipation hole 411 are all rectangular holes.

[0017] The first stator lamination 11, the second stator lamination 21, the third stator lamination 31, and the fourth stator lamination 41 are silicon steel sheets.

[0018] The working principle of this oil-cooled flat wire stator core is explained below.

[0019] like Figure 4 and Figure 5 As shown, the first stator heat dissipation hole 111, the second stator heat dissipation hole 211, the third stator heat dissipation hole 311 and the fourth stator heat dissipation hole 411 form a stepped heat dissipation channel L.

[0020] By utilizing stepped heat dissipation channels L, the cooling oil can achieve full coverage of the iron core groove wall, the flat wire crown end, and the welded end coil, avoiding local overheating, ensuring uniform heat dissipation area, outstanding effect, and strong practicality.

[0021] Obviously, the embodiments described above are only some embodiments of this application, and not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application.

Claims

1. An oil-cooled flat wire stator core, characterized in that, The oil-cooled flat wire stator core comprises a first stator group (1), a second stator group (2), a third stator group (3), and a fourth stator group (4), which are stacked at a preset angle. The first stator group (1) includes a plurality of first stator plates (11), and the outer ring of the first stator plates (11) is provided with a plurality of first stator heat dissipation holes (111). The second stator group (2) includes a plurality of second stator plates (21), and the outer ring of the second stator plates (21) is provided with a plurality of second stator heat dissipation holes (211). The third stator group (3) includes a plurality of third stator plates (31), and the outer ring of the third stator plates (31) is provided with a plurality of third stator heat dissipation holes (311). The fourth stator group (4) includes a plurality of fourth stator plates (41), and the outer ring of the fourth stator plates (41) is provided with a plurality of fourth stator heat dissipation holes (411). The first stator heat dissipation hole (111), the second stator heat dissipation hole (211), the third stator heat dissipation hole (311) and the fourth stator heat dissipation hole (411) constitute a stepped heat dissipation channel (L).

2. The oil-cooled flat wire stator core according to claim 1, characterized in that, The first stator heat dissipation hole (111), the second stator heat dissipation hole (211), the third stator heat dissipation hole (311) and the fourth stator heat dissipation hole (411) are all rectangular holes.

3. The oil-cooled flat wire stator core according to claim 1, characterized in that, The first stator lamination (11), the second stator lamination (21), the third stator lamination (31) and the fourth stator lamination (41) are silicon steel sheets.

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