Motor oil cooling system
By adopting the structural design of the front injection pipe, the rear injection pipe and the adapter oil pipe in the permanent magnet synchronous motor, the complex problem of oil groove processing of the stator core is solved, low-cost and efficient cooling is achieved, and component life is extended.
Patent Information
- Application Number
- CN202422229092.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The existing permanent magnet synchronous motor oil cooling system has complex processing of oil tanks on the stator core, which increases manufacturing difficulty and production costs. At the same time, the use of sealing structures has improved assembly accuracy requirements and machine costs.
The structural design of the front injection pipe, the rear injection pipe and the adapter oil pipe is adopted. By setting an oil cavity and oil separation joint on the front and rear end covers, the distribution and injection of cooling oil are achieved, and the oil groove and sealing structure are avoided on the stator core.
Reduces manufacturing difficulty and production costs, while improving cooling effect and extending the service life of components.
Smart Images
Figure CN223066948U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of permanent magnet synchronous motors, and particularly relates to a motor oil cooling system. Background Art
[0002] In the permanent magnet synchronous motor industry, due to the characteristics of the engine oil itself, such as local non-magnetic conductivity, non-flammability, non-conductivity, and good heat conduction, which have no influence on the motor magnetic circuit and higher heat dissipation efficiency, the oil cooling system using engine oil as the cooling oil is widely used in oil-cooled motors and oil-water hybrid cooled motors.
[0003] At present, the oil cooling system of the motor includes a stator oil circuit and a rotor oil circuit. The stator oil circuit needs to open oil grooves on the stator core of the stator for the cooling oil to flow through and take away heat. However, the processing technology of opening oil grooves on the stator core is complex, which increases the manufacturing difficulty and production cost; the rotor oil circuit itself pumps a part of the cooling oil into the motor. In order to prevent too much oil in the stator oil circuit from flowing into the motor and increasing the resistance of the rotor rotation, a sealing structure is required to isolate the oil grooves of the stator core, and at the same time, multiple parts need to be used in cooperation to ensure the sealing performance, resulting in high assembly accuracy requirements during the assembly process of the whole machine, and further increasing the manufacturing difficulty and production cost. Summary of the Utility Model
[0004] Aiming at the above-mentioned defects existing in the prior art, the utility model aims to provide a motor oil cooling system, which optimizes the structure and greatly reduces the manufacturing difficulty and production cost.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0006] A motor oil cooling system includes the front end cover and the rear end cover of the motor, and also includes a front spray oil pipe arranged in the front end cover, a rear spray oil pipe arranged in the rear end cover, and a transfer oil pipe. An oil cavity and an oil distribution joint communicated with the oil cavity are arranged on the rear end cover. An oil passage communicating the front spray oil pipe and the transfer oil pipe is arranged on the front end cover. The rear spray oil pipe and the transfer oil pipe are respectively communicated with the oil distribution joint.
[0007] Among them, two rear spray oil pipes are arranged. A three-way oil hole is arranged on the oil distribution joint. The oil inlet hole of the three-way oil hole is communicated with the oil cavity, and the two oil outlet holes of the three-way oil hole are respectively communicated with the two rear spray oil pipes.
[0008] Among them, a through oil hole is arranged on the oil distribution joint, and the through oil hole communicates the oil cavity and the transfer oil pipe.
[0009] Among them, the rear spray oil pipe is pressed in the rear end cover through a pressing seat.
[0010] Among them, the pressing seat includes a seat body and a plurality of pressing claws arranged at intervals on the seat body. The seat body is fixed on the rear end cover through a first locking member, and the pressing claws press the rear fuel injection pipe on the rear end cover.
[0011] Among them, the oil distribution joint is integrally provided with the pressing seat.
[0012] Among them, there are two front fuel injection pipes. The oil passage is a three-way oil passage. The oil inlet passage of the three-way oil passage is communicated with the transfer oil pipe, and the two oil outlet passages of the three-way oil passage are respectively communicated with the two front fuel injection pipes.
[0013] Among them, the front fuel injection pipe is fixed on the front end cover through a pressing piece.
[0014] Among them, the pressing piece includes a locking part and a pressing part connected to each other. The locking part is fixed on the front end cover through a second locking member, and the pressing part presses the front fuel injection pipe on the front end cover.
[0015] Among them, a plurality of fuel injection holes are respectively and uniformly arranged on the front fuel injection pipe and the rear fuel injection pipe.
[0016] Adopting the above technical solutions, the beneficial effects of the present utility model are as follows:
[0017] The motor oil cooling system provided by the present utility model mainly consists of a front fuel injection pipe arranged in the front end cover, a rear fuel injection pipe arranged in the rear end cover, and a transfer oil pipe. By arranging an oil cavity and an oil distribution joint communicated with the oil cavity on the rear end cover, arranging an oil passage communicating the front fuel injection pipe and the transfer oil pipe on the front end cover, and respectively communicating the rear fuel injection pipe and the transfer oil pipe with the oil distribution joint, the oil injection cooling of the stator is realized. Compared with the prior art, the motor oil cooling system of the present utility model optimizes the structure, does not need to open an oil groove on the stator core of the stator, nor does it need to adopt a sealing structure to seal the oil groove, greatly reducing the manufacturing difficulty and production cost. At the same time, the oil injection cooling method greatly improves the cooling effect and extends the service life of each component. Description of the Drawings
[0018] Figure 1 is a partial structural schematic diagram of the motor oil cooling system of the present utility model;
[0019] Figure 2 is Figure 1 the structural schematic diagram of the oil distribution joint and the pressing seat in
[0020] Figure 3 is the structural schematic diagram of the rear end cover in the motor oil cooling system of the present utility model;
[0021] Figure 4 is Figure 3 the structural schematic diagram of the other side;
[0022] Figure 5 It is a schematic structural view of the front end cover in the motor oil cooling system of the present utility model;
[0023] In the figure: 1. Front end cover; 2. Rear end cover; 21. Oil cavity; 3. Front spray oil pipe; 4. Rear spray oil pipe; 5. Adapter oil pipe; 6. Oil distribution joint; 61. Oil inlet hole; 62. Oil outlet hole; 63. Through oil hole; 7. Stator core; 8. Pressing seat; 81. Seat body; 82. Pressing claw; 9. First locking part; 10. Pressing piece; 101. Locking part; 102. Pressing part; 11. Second locking part; 12. Spray oil hole. Specific embodiments
[0024] In order to make the purpose, technical solutions and advantages of the present utility model more clear and understandable, the following further details the present utility model 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 utility model and are not used to limit the present utility model.
[0025] As Figures 1 to 5 shown, this embodiment provides a motor oil cooling system, including the front end cover 1 and the rear end cover 2 of the motor, further including a front spray oil pipe 3 arranged in the front end cover 1, a rear spray oil pipe 4 arranged in the rear end cover 2, and an adapter oil pipe 5. An oil cavity 21 and an oil distribution joint 6 communicating with the oil cavity 21 are arranged on the rear end cover 2. An oil passage communicating the front spray oil pipe 3 and the adapter oil pipe 5 is arranged on the front end cover 1. The rear spray oil pipe 4 and the adapter oil pipe 5 are respectively communicated with the oil distribution joint 6.
[0026] The motor oil cooling system in this embodiment optimizes the structure, eliminates the need to open oil grooves on the stator core 7 of the stator and the need to use a sealing structure to seal the oil grooves, greatly reducing the manufacturing difficulty and production cost. At the same time, the spray oil cooling method greatly improves the cooling effect and extends the service life of each component.
[0027] There are two rear spray oil pipes 4 in this embodiment. A three-way oil hole is arranged on the oil distribution joint 6. The oil inlet hole 61 of the three-way oil hole is communicated with the oil cavity 21, and the two oil outlet holes 62 of the three-way oil hole are respectively communicated with the two rear spray oil pipes 4. With this setting, the communication between the oil cavity 21 and the two rear spray oil pipes 4 is realized, facilitating the timely inflow of the cooling oil into the two rear spray oil pipes 4.
[0028] A through oil hole 63 is also arranged on the oil distribution joint 6 in this embodiment. The through oil hole 63 communicates the oil cavity 21 and the adapter oil pipe 5. With this setting, the communication between the oil cavity 21 and the adapter oil pipe 5 is realized, facilitating the timely inflow of the cooling oil into the adapter oil pipe 5.
[0029] In order to improve the working stability of the rear spray oil pipe 4, it is preferably in this embodiment that the rear spray oil pipe 4 is pressed in the rear end cover 2 through a pressing seat 8.
[0030] Specifically, the pressing seat 8 includes a seat body 81 and a plurality of pressing claws 82 spaced apart on the seat body 81. The seat body 81 is fixed to the rear end cover 2 by a first locking member 9, and the pressing claws 82 press the rear fuel injection pipe 4 against the rear end cover 2.
[0031] In order to improve the installation firmness of the oil distribution joint 6, in this embodiment, the oil distribution joint 6 and the pressing seat 8 are integrally provided. Specifically, the oil distribution joint 6 is connected to the seat body 81 of the pressing seat 8.
[0032] In this embodiment, there are two front fuel injection pipes 3, and the oil passage is a three-way oil passage. The oil inlet passage of the three-way oil passage is communicated with the transfer oil pipe 5, and the two oil outlet passages of the three-way oil passage are respectively communicated with the two front fuel injection pipes 3.
[0033] In order to improve the working stability of the front fuel injection pipe 3, in this embodiment, it is preferably that the front fuel injection pipe 3 is fixed to the front end cover 1 by a pressing piece 10.
[0034] Specifically, the pressing piece 10 includes a locking portion 101 and a pressing portion 102 connected to each other. The locking portion 101 is fixed to the front end cover 1 by a second locking member 11, and the pressing portion 102 presses the front fuel injection pipe 3 against the front end cover 1.
[0035] The front fuel injection pipe 3 and the rear fuel injection pipe 4 in this embodiment are both arc-shaped. Of course, an annular shape can also be adopted, and the specific choice is made according to actual needs. This embodiment does not limit this.
[0036] A plurality of fuel injection holes 12 are respectively and uniformly provided on the front fuel injection pipe 3 and the rear fuel injection pipe 4 in this embodiment. With such a setting, the oil injection cooling effect of the stator is better realized.
[0037] The first locking member 9 and the second locking member 11 in this embodiment both adopt screws. Of course, bolts can also be adopted. This embodiment does not limit this.
[0038] In this embodiment, the oil cavity 21 on the rear end cover 2 is connected to the oil supply system outside the motor. During operation, the oil cavity 21 distributes the cooling oil to the transfer oil pipe 5 and the two rear fuel injection pipes 4 through the oil distribution joint 6. The cooling oil in the transfer oil pipe 5 is distributed to the two front fuel injection pipes 3 through the three-way oil passage. The two front fuel injection pipes 3 spray and cool the front end of the stator, and the two rear fuel injection pipes 4 spray and cool the rear end of the stator.
[0039] The above is only a preferred embodiment of the motor oil cooling system of the present utility model, and there are more embodiments which will not be elaborated here. To sum up, the motor oil cooling system of the present utility model optimizes the structure, without the need to open an oil groove on the stator core 7 of the stator, nor the need to adopt a sealing structure to seal the oil groove, greatly reducing the manufacturing difficulty and production cost. At the same time, the oil injection cooling method greatly improves the cooling effect and extends the service life of each component.
[0040] The present utility model is not limited to the above specific embodiments. All kinds of transformations made by those of ordinary skill in the art starting from the above concepts without creative labor fall within the protection scope of the present utility model.
Claims
1. An oil cooling system for an electric motor, comprising a front end cover (1) and a rear end cover (2) of the electric motor, characterized in that, It further includes a front fuel injection pipe (3) arranged inside the front end cover (1), a rear fuel injection pipe (4) arranged inside the rear end cover (2), and a connecting fuel pipe (5). An oil cavity (21) and an oil distributing joint (6) communicating with the oil cavity (21) are arranged on the rear end cover (2). An oil passage connecting the front fuel injection pipe (3) and the connecting fuel pipe (5) is arranged on the front end cover (1). The rear fuel injection pipe (4) and the connecting fuel pipe (5) are respectively communicated with the oil distributing joint (6).
2. The motor oil cooling system according to claim 1, wherein There are two rear fuel injection pipes (4). A three-way oil hole is arranged on the oil distributing joint (6). The oil inlet hole (61) of the three-way oil hole is communicated with the oil cavity (21), and the two oil outlet holes (62) of the three-way oil hole are respectively communicated with the two rear fuel injection pipes (4).
3. The motor oil cooling system according to claim 2, wherein A through oil hole (63) is arranged on the oil distributing joint (6), and the through oil hole (63) communicates the oil cavity (21) and the connecting fuel pipe (5).
4. The motor oil cooling system according to claim 1, characterized in that, The rear fuel injection pipe (4) is pressed inside the rear end cover (2) through a pressing seat (8).
5. The motor oil cooling system according to claim 4, wherein, The pressing seat (8) includes a seat body (81) and a plurality of pressing claws (82) arranged at intervals on the seat body (81). The seat body (81) is fixed on the rear end cover (2) through a first locking member (9), and the pressing claws (82) press the rear fuel injection pipe (4) on the rear end cover (2).
6. The motor oil cooling system according to claim 4, wherein The oil distributing joint (6) and the pressing seat (8) are integrally arranged.
7. The motor oil cooling system according to claim 1, characterized in that, There are two front fuel injection pipes (3). The oil passage is a three-way oil passage. The oil inlet passage of the three-way oil passage is communicated with the connecting fuel pipe (5), and the two oil outlet passages of the three-way oil passage are respectively communicated with the two front fuel injection pipes (3).
8. The motor oil cooling system according to claim 1, characterized in that, The front fuel injection pipe (3) is fixed on the front end cover (1) through a pressing piece (10).
9. The motor oil cooling system according to claim 8, wherein The pressing piece (10) includes a locking portion (101) and a pressing portion (102) connected to each other. The locking portion (101) is fixed on the front end cover (1) through a second locking member (11), and the pressing portion (102) presses the front fuel injection pipe (3) on the front end cover (1).
10. The motor oil cooling system according to claim 1, wherein, A plurality of fuel injection holes (13) are respectively and uniformly arranged on the front fuel injection pipe (3) and the rear fuel injection pipe (4).