Motor stator oil duct structure of hybrid electric vehicle

Abstract

The utility model relates to the technical field of motor stator oil cooling, and discloses a hybrid automobile motor stator oil duct structure, which comprises a plurality of stator punching sheets, punching sheet assemblies are welded on the outer sides of the plurality of stator punching sheets, waist-shaped holes are uniformly formed in the axial direction of the plurality of stator punching sheets, and nozzles are uniformly formed in the end parts of the plurality of stator punching sheets. In the working process, five different punching sheets are adopted to form the complete stator iron core, the shapes of the nozzles between the punching sheets are different, the nozzles are special-shaped holes, when cooling liquid is sprayed out, a spraying angle is formed in the radial direction of the stator punching sheets, a spraying angle is formed in the tangential direction, the spraying area is large, cooling is more uniform, and the heat dissipation effect is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor stator oil cooling, in particular to a hybrid vehicle motor stator oil channel structure. Background Art

[0002] At present, with the rapid development of the new energy vehicle industry, a new round of motor innovation has been triggered, which has put forward very high requirements on the motor power density and torque density, making the development trend of motors tend towards flat wire and oil cooling.

[0003] The oil cooling method of the motor has a better heat dissipation effect than the traditional new energy motors that use water cooling and air cooling because the coolant can directly contact the parts that need heat dissipation. It also has a better effect on improving the power density and torque density capabilities of the motor.

[0004] For the P1+P3 hybrid drive system, because the P3 motor has high power and strict temperature rise requirements, the existing P3 motor stator structure has poor heat dissipation, which will reduce the service life of the P3 motor.

[0005] Therefore, a hybrid vehicle motor stator oil channel structure is proposed to solve the above problems. Utility Model Content

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a hybrid vehicle motor stator oil channel structure, comprising a plurality of stator punchings, a punching assembly welded to the outside of the plurality of stator punchings, waist-shaped holes uniformly opened in the axial direction of the plurality of stator punchings, and nozzles uniformly opened at the ends of the plurality of stator punchings.

[0007] Preferably, the punching sheet assembly is composed of four punching sheets welded together, and waist-shaped holes are evenly opened in the axial direction of the four punching sheets.

[0008] Preferably, the ends of the four punching sheets are evenly provided with special-shaped holes, the shapes of the special-shaped holes between each punching sheet are different, and the special-shaped holes between each punching sheet are staggered.

[0009] Preferably, the thickness of each punching sheet is 0.01-3 mm.

[0010] Preferably, the welding positions of the plurality of stator punching sheets and punching sheet assemblies are aligned with each other to form a complete weld.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. During operation, the coolant enters from the middle of the stator punching, replacing the traditional oil ring and saving costs.

[0013] 2. During operation, multiple stator punching sheets are axially opened with waist-shaped holes. After the oil enters from the inlet, it can flow through the waist-shaped holes to all parts of the stator punching outer diameter oil channel and be sprayed out from the nozzle at the end of the stator punching sheet. The oil from the nozzle is sprayed onto the end winding. The winding is a heat-generating component and is used to directly cool the winding.

[0014] 3. During operation, five different punching sheets are used to form a complete stator core. The nozzles between each sheet have different shapes and are special-shaped holes. When the coolant is sprayed out, there is not only a spray angle along the radial direction of the stator punching sheet, but also a spray angle along the tangential direction. The spray area is large, the cooling is more uniform, and the heat dissipation effect is better.

[0015] 4. The flow resistance of the special-shaped nozzle is small, and the complex oil path on the outer diameter of the stator core can achieve uniform cooling of the stator core and the windings in the stator core slots, reducing system losses and improving system efficiency.

[0016] 5. The stator punching weld runs completely through the outer surface of the stator punching from one end to the other, reducing the gap between the punchings after welding, reducing the flow resistance, improving system efficiency and reducing losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the stator punching sheet of the utility model;

[0020] Figure 3 This is a schematic structural diagram of the innermost punching sheet of the punching sheet assembly of the present invention;

[0021] Figure 4 This is a schematic structural diagram of the secondary inner layer punching sheet of the punching sheet assembly of the present invention;

[0022] Figure 5 This is a schematic structural diagram of the second outer layer punching sheet of the punching sheet assembly of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the outermost punching sheet of the punching sheet assembly of the present invention;

[0024] Figure 7 This is a structural diagram of the coolant flow direction of the utility model.

[0025] Figure 8 It is a structural schematic diagram of the punching sheet assembly of the utility model.

[0026] In the figure: 1. Stator punching sheet; 2. Punching sheet assembly; 3. Waist-shaped hole; 4. Nozzle. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] Example, by Figure 1-8 The utility model discloses a stator oil channel structure for a hybrid vehicle motor, comprising a plurality of stator punching sheets 1, a punching assembly 2 being welded to the outer sides of the plurality of stator punching sheets 1, waist-shaped holes 3 being uniformly opened in the axial direction of the plurality of stator punching sheets 1, and nozzles 4 being uniformly opened at the ends of the plurality of stator punching sheets 1;

[0029] Specifically, the punching plate assembly 2 is composed of four punching plates welded together, and waist-shaped holes 3 are evenly opened in the axial direction of the four punching plates;

[0030] Specifically, the ends of the four punching sheets are evenly provided with special-shaped holes, the shapes of the special-shaped holes between each punching sheet are different, and the special-shaped holes between each punching sheet are staggered;

[0031] Specifically, the thickness of each punching sheet is 0.01-3mm;

[0032] Specifically, the welding positions of the plurality of stator punching sheets 1 and the punching sheet assembly 2 are aligned with each other to form a complete weld.

[0033] Working principle: During operation, after the coolant enters the internal cavity of the motor stator oil channel, it is divided into four oil channels, flowing evenly to the entire oil channel in clockwise and counterclockwise directions, and sprayed to the end winding through the two end face nozzles 4 of the stator punching 1. The end winding is stacked through the stator sheet to form a scattered oil mist, so that the end winding is fully cooled; through the direct heat dissipation oil cooling design method, the temperature rise of the motor is greatly reduced, and the power density and torque density of the motor are improved.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hybrid vehicle motor stator oil channel structure, comprising a plurality of stator punchings (1), characterized in that: Punch assemblies (2) are welded to the outsides of the plurality of stator punches (1), waist-shaped holes (3) are evenly provided in the axial direction of the plurality of stator punches (1), and nozzles (4) are evenly provided at the ends of the plurality of stator punches (1).

2. The hybrid vehicle motor stator oil channel structure according to claim 1, characterized in that: The punching sheet assembly (2) is composed of four punching sheets welded together, and waist-shaped holes (3) are evenly opened in the axial direction of the four punching sheets.

3. The hybrid vehicle motor stator oil channel structure according to claim 2, characterized in that: Special-shaped holes are evenly formed at the ends of the four punching sheets. The shapes of the special-shaped holes between each punching sheet are different, and the special-shaped holes between each punching sheet are staggered.

4. The hybrid vehicle motor stator oil channel structure according to claim 2, characterized in that: The thickness of each punching sheet is 0.01-3 mm.

5. The hybrid vehicle motor stator oil channel structure according to claim 1, characterized in that: The welding positions of the plurality of stator punching sheets (1) and the punching sheet assembly (2) are aligned with each other to form a complete weld.

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