Motor end cover of electric automobile
By designing the disc-shaped main body and liquid-cooled chamber structure of the end cover of the electric vehicle motor, the problem of difficulty in dissipating heat by the motor housing and control box is solved, and efficient cooling of the electrical parts in the motor housing and control chamber is achieved, and the electrical parts in the motor housing and control chamber are extended. The service life of the equipment is improved and the rationality and safety of cooling methods are improved.
Patent Information
- Application Number
- CN202421452297.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-06-24
AI Technical Summary
The electric vehicle motor housing and control box are difficult to dissipate heat during use, resulting in heat accumulation and affecting the life of the equipment.
Design an electric vehicle motor end cover, adopting an integral disc-shaped body, including through holes, positioning rings, annular walls and liquid-cooling chambers, to cool the stator rotor inside the motor housing and the electrical parts in the control chamber through heat conduction. , ensure stable positioning and safety.
Through the design of the liquid-cooled chamber, effective cooling of the motor housing and electrical parts in the control chamber is achieved, extending the service life of the equipment, and improving the rationality and safety of the cooling method.
Smart Images
Figure CN222282945U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor parts for electric vehicles, in particular to an electric vehicle motor end cover. Background Art
[0002] The motors used in electric vehicles usually generate a lot of heat. For this reason, a liquid cooling or air cooling structure is designed on the motor housing, making the motor as a whole bloated. At the same time, the end cover on the motor housing generally constitutes a control box, which is equipped with various electronic control devices. It also generates a lot of heat during use. The control box is enclosed by the motor end cover and the external cover, and heat dissipation is difficult. Therefore, a new motor housing or end cover is expected to be able to properly cool the control box while cooling the motor housing. Utility Model Content
[0003] In view of the above problems existing in the prior art, an electric vehicle motor end cover is now provided, which is intended to cool the stator and rotor inside the motor housing and the motor shaft and the electrical components in the control cavity through heat conduction at the same time, so as to overcome at least one of the above technical defects.
[0004] The specific technical solutions are as follows:
[0005] A motor end cover for an electric vehicle comprises a main body which is in the shape of a disk as a whole, a through hole for passing an axle is formed through the middle of the main body, a positioning ring is formed on the front end face of the main body for matching the rear end of a motor housing, an annular wall is formed on the rear end face of the main body which is arranged around the through hole and is open to the rear, and the rear end face of the main body is divided into a control cavity and a liquid cooling cavity arranged around the control cavity by the annular wall, and a plurality of threading holes are formed through the main body which are located in the control cavity; a support frame is formed on the outer edge of the main body for being connected to an external vehicle frame to keep it in a fixed state.
[0006] Preferably, a circular ring is formed on the front end surface of the main body around the through hole protrusion, and the range surrounded by the circular ring constitutes a circular groove, the through hole is located in the circular groove, and a bushing is detachably embedded in the circular groove.
[0007] Preferably, the inner wall of the circular groove is provided with a circumferentially arranged stop groove, and the outer periphery of the bushing protrudes outward to form an annular protrusion that matches the shape of the stop groove and is opposite in position.
[0008] Preferably, an annular groove is formed on the end surface of the positioning ring away from the main body for positioning and matching the rear end of the motor housing.
[0009] Preferably, an annular groove is formed on the end surface of the annular wall away from the main body, for embedding a sealing ring and matching with an external cover shell.
[0010] Preferably, the outer edge of the rear end surface of the main body is further extended in the rearward direction to form a surrounding wall, and the surrounding wall and the annular wall are combined to form a liquid cooling chamber.
[0011] Preferably, the rear end surface of the main body is further formed with a plurality of reinforcing ribs extending in the radial direction in the liquid cooling chamber.
[0012] Preferably, there are two support frames arranged vertically, and a plurality of screw holes for matching with an external frame are arranged in parallel on the outer edge of each support frame.
[0013] Preferably, the number of threading holes is three arranged in parallel.
[0014] Preferably, the positioning ring and the annular wall are integrally formed on the main body.
[0015] The beneficial effects of the above technical solution are:
[0016] The electric vehicle motor end cover includes a main body, which is provided with a through hole, a positioning ring, and an annular wall. The rear end face of the main body is divided into a control cavity and a liquid cooling cavity by the annular wall, and the outer edge of the main body forms a support frame, so that the motor end cover is positioned in multiple positions by the motor tail end and the external frame, and the structure is more stable. The electrical components and the motor shaft in the control cavity are separated by the annular wall, and a liquid cooling cavity is formed outside the annular wall, so that the electrical lines in the control cavity will not become wet due to the influence of the liquid cooling pipe arranged in the control cavity, and the safety is higher. Liquid cooling pipes can be arranged in the liquid cooling cavity, which is beneficial to cool the stator and rotor and the motor shaft inside the motor housing and the electrical components in the control cavity through heat conduction at the same time, so that the product service life is longer and the liquid cooling arrangement method is more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a three-dimensional diagram of the electric vehicle motor end cover of the utility model;
[0018] Figure 2 A three-dimensional diagram of the electric vehicle motor end cover of the utility model from another perspective;
[0019] Figure 3 It is an exploded view of the electric vehicle motor end cover of the utility model. DETAILED DESCRIPTION
[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is specifically described in the following embodiments in conjunction with the accompanying drawings.
[0021] See also Figures 1 to 3As shown in , the electric vehicle motor end cover provided by this embodiment includes a main body 1 that is generally disc-shaped, a through hole 3 for passing an axis is formed through the middle of the main body 1, a positioning ring 2 is formed on the front end face of the main body 1 to match the rear end of the motor housing, and an annular wall 7 is arranged around the through hole 3 and open to the rear on the rear end face of the main body 1, and the annular wall 7 divides the rear end face of the main body 1 into a control cavity 8 and a liquid cooling cavity 9 arranged around the control cavity 8, and a plurality of threading holes 5 are also formed on the main body 1 and located in the control cavity 8; the outer edge of the main body 1 also forms at least one support frame 4 with screw holes formed therein horizontally, which is used to be externally connected to an external vehicle frame to maintain a fixed state.
[0022] Based on the above technical scheme, the electric vehicle motor end cover includes a main body 1, which is formed with a through hole 3, a positioning ring 2, and an annular wall 7. The rear end face of the main body 1 is divided into a control cavity 8 and a liquid cooling cavity 9 by the annular wall 7, and the outer edge of the main body 1 constitutes a support frame 4, so that the motor end cover is positioned in multiple positions by the tail end of the motor and the external frame, and the structure is more stable. The electrical components and the motor shaft in the control cavity 8 are separated by the annular wall 7, and the liquid cooling cavity 9 is formed outside the annular wall 7, so that the electrical wires in the control cavity 8 will not become wet due to the influence of the liquid cooling pipe arranged in the control cavity 8, and the safety is higher. Liquid cooling pipes can be arranged in the liquid cooling cavity 9, which is beneficial to cool the stator and rotor and the motor shaft inside the motor housing and the electrical components in the control cavity 8 through heat conduction at the same time, so that the product has a longer service life and a more reasonable liquid cooling arrangement.
[0023] In a preferred embodiment, in combination Figure 3 As shown in , the front end face of the main body 1 is also formed with a circular ring 6 protruding around the through hole 3, and the range surrounded by the circular ring 6 constitutes a circular groove 13, and the through hole 3 is located in the circular groove 13, and the circular groove 13 is also detachably embedded with a bushing 12, the inside of the bushing 12 can be used to configure the bearing, and the bearing is assembled to the motor rotor, so that the rotor rotation is more stable and not easy to move radially, and the inner diameter of the bushing 12 can be adjusted based on the selection of the bearing, and the bearing installation is also more convenient. Further, the inner wall of the circular groove 13 has a circumferentially arranged stop groove 14, and the outer periphery of the bushing 12 protrudes outward to form an annular protrusion 15 that matches the shape of the stop groove 14 and is opposite in position, so that the bushing 12 can be clamped in the circular groove 13.
[0024] As a further embodiment, the end face of the positioning ring 2 facing away from the main body 1 is formed with an annular groove for positioning and matching the rear end of the motor housing. Further, the end face of the annular wall 7 facing away from the main body 1 is formed with an annular groove for embedding a sealing ring and matching the external cover. Further, the outer edge of the rear end face of the main body 1 is also formed with a surrounding wall extending in the rearward direction, and a liquid cooling chamber 9 is enclosed between the surrounding wall and the annular wall 7. Further, the rear end face of the main body 1 is also formed with a plurality of reinforcing ribs 11 extending in the radial direction in the liquid cooling chamber 9 to enhance the overall strength. Further, the number of support frames 4 is two arranged vertically, and the outer edge of each support frame 4 is respectively arranged in parallel with a plurality of screw holes 16 for matching the external frame. Further, the number of threading holes 5 is three arranged in parallel. Further, the positioning ring 2 and the annular wall 7 are integrally formed on the main body 1.
[0025] In addition, in this solution, the liquid cooling tube in the liquid cooling cavity 9 is arranged in a disc-type reflux structure to obtain a more uniform cooling effect, and the surrounding wall has a notch for passing the liquid cooling tube, and the liquid cooling tube is confined in the liquid cooling cavity 9 in combination with the external cover. However, under the premise of sufficient sealing, the liquid flow can also flow directly into and out of the liquid cooling cavity 9 enclosed by the external cover, the rear end face of the main body 1, the surrounding wall, and the annular wall 7, and the cooling effect is better, but the sealing requirements are higher. And the layout structure of this solution makes the end cover structure flatter and has a liquid cooling cavity 9.
[0026] The above is only a preferred embodiment of the utility model, which is only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences can be made within the spirit and scope defined by the claims of the utility model, but they will all fall within the scope of protection of the utility model.
Claims
1. An electric vehicle motor end cover, comprising a main body (1) in the shape of a disc as a whole, a through hole (3) for passing an axle through the middle of the main body (1), characterized in that: The front end face of the main body (1) is formed with a positioning ring (2) for matching the rear end of the motor housing, and the rear end face of the main body (1) is formed with an annular wall (7) arranged around the through hole (3) and open to the rear, and the rear end face of the main body (1) is divided by the annular wall (7) into a control chamber (8) and a liquid cooling chamber (9) arranged around the control chamber (8), and the main body (1) is also provided with a plurality of threading holes (5) located in the control chamber (8); the outer edge of the main body (1) is also formed with a support frame (4) for being externally connected to an external vehicle frame to maintain a fixed state.
2. The electric vehicle motor end cover as claimed in claim 1, characterized in that: The front end surface of the main body (1) is also formed with a circular ring (6) protruding around the through hole (3), and the range surrounded by the circular ring (6) forms a circular groove (13). The through hole (3) is located in the circular groove (13), and a bushing (12) is detachably embedded in the circular groove (13).
3. The electric vehicle motor end cover as claimed in claim 2, characterized in that: The inner wall of the circular groove (13) is provided with a circumferentially arranged stop groove (14), and the outer periphery of the bushing (12) protrudes outward to form an annular protrusion (15) that matches the shape of the stop groove (14) and is opposite in position.
4. The electric vehicle motor end cover as claimed in claim 1, characterized in that: An annular groove is formed on the end surface of the positioning ring (2) facing away from the main body (1) for positioning and matching the rear end of the motor housing.
5. The electric vehicle motor end cover as claimed in claim 4, characterized in that: An annular groove is formed on the end surface of the annular wall (7) facing away from the main body (1) for embedding a sealing ring and matching an external cover shell.
6. The electric vehicle motor end cover as claimed in claim 3, characterized in that: The outer edge of the rear end surface of the main body (1) is also formed with a surrounding wall extending in the rearward direction, and a liquid cooling chamber (9) is enclosed between the surrounding wall and the annular wall (7).
7. The electric vehicle motor end cover as claimed in claim 6, characterized in that: The rear end surface of the main body (1) is also formed with a plurality of reinforcing ribs (11) extending in a radial direction in the liquid cooling chamber (9).
8. The electric vehicle motor end cover as claimed in claim 6, characterized in that: The number of the support frames (4) is two and they are arranged vertically, and the outer edge of each support frame (4) is respectively arranged in parallel with a plurality of screw holes (16) for matching with an external vehicle frame.
9. The electric vehicle motor end cover as claimed in claim 1, characterized in that: The number of the threading holes (5) is three and they are arranged in parallel.
10. The electric vehicle motor end cover as claimed in claim 1, characterized in that: The positioning ring (2) and the annular wall (7) are integrally formed on the main body (1).