Anti-demagnetization cooling device for motor of electric vehicle

Abstract

The utility model belongs to the technical field of electric vehicle motors, and particularly relates to an anti-demagnetization cooling device for an electric vehicle motor, which comprises an end cover, a cooling device and a cooling device, the limiting baffle is fixed to the outer side of the end cover, and a second avoiding groove is formed in the middle of the limiting baffle; a plurality of arc-shaped grooves surrounding the avoiding groove II are formed in the limiting plate; the heat conducting plate is fixed on the inner side of the end cover, and a plurality of arc-shaped heat dissipation plates are arranged on the heat conducting plate; one end of the heat dissipation plate penetrates through the arc-shaped groove in the corresponding position; a heat-conducting cylinder is arranged in the middle of the heat-conducting plate; the heat conduction cylinder penetrates through the second receding groove, and a sealing bearing is arranged in the heat conduction cylinder. The outer cover plate is fixed to the side, away from the heat conduction plate, of the limiting baffle, and an avoiding groove III is formed in the middle; a plurality of stop blocks are arranged on the inner side of the outer cover plate at intervals; an air inlet is formed between every two adjacent check blocks, and the positions of the air inlets correspond to the positions of the heat dissipation plates. The motor end cover can solve the problem that water may enter the heat dissipation holes of the motor end cover of the electric vehicle to damage the motor, and has a good market application prospect.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric vehicle motors, and particularly relates to an anti-demagnetization and cooling device for an electric vehicle motor. Background Art

[0002] Motors for electric vehicles are generally and can be divided into and two categories. The rotating part of the motor is called the rotor, and the non-rotating part is called the stator. One of the rotor or stator of a permanent magnet motor is a permanent magnet, and the other is a wire coil wound with enameled wire; the rotor and stator of a series-excited motor are both wire coils wound with enameled wire. For motors with the same power, permanent magnet motors are more power-saving than series-excited motors. However, the magnets of permanent magnet motors are afraid of high temperatures, and too high a temperature of the permanent magnet motor is one of the reasons for demagnetization.

[0003] In order to prevent the electric vehicle motor from being demagnetized due to high temperature, a cooling device can be provided at the motor. The patent with the application number CN202023336263.X discloses a heat dissipation end cover for an electric vehicle motor, and heat dissipation holes are provided on the surface of the end cover, and a guide plate is provided at the heat dissipation holes. By installing the end cover on the motor, during the driving of the electric vehicle, air enters the interior of the motor through the guidance of the guide plate, which can cool and dissipate heat inside the motor, thereby improving the working stability of the motor. However, the heat dissipation holes can not only let air in, but also allow water to enter the interior of the motor through the heat dissipation holes, which may cause damage to the motor and pose a safety hazard.

[0004] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide an anti-demagnetization and cooling device for an electric vehicle motor to solve the problem that water may enter through the heat dissipation holes in the end cover of the electric vehicle motor, resulting in damage to the motor.

[0006] To achieve the above object, the present utility model provides the following technical solutions:

[0007] An anti-demagnetization and cooling device for an electric vehicle motor, comprising:

[0008] An end cover, with an avoidance groove one opened in the middle thereof;

[0009] A limit baffle, fixed on the outer side of the end cover, with an avoidance groove two opened in the middle thereof; a plurality of arc grooves surrounding the avoidance groove two are opened on the limit baffle;

[0010] A heat conducting plate is fixed on the inner side of the end cover, and a plurality of arc-shaped heat dissipation plates are provided on the heat conducting plate; one end of the heat dissipation plate passes through the arc-shaped groove at the corresponding position; a heat conducting cylinder is also provided in the middle of the heat conducting plate; the heat conducting cylinder passes through the second avoidance groove, and a sealed bearing is provided inside the heat conducting cylinder;

[0011] The outer cover is fixed on the side of the limit baffle away from the heat conduction plate, and a avoidance groove three is opened in the middle; a plurality of blocks are arranged at intervals on the inner side of the outer cover; an air inlet is separated between two adjacent blocks, and the air inlet corresponds to the position of the heat dissipation plate.

[0012] Preferably, the stopper is integrally formed with the outer cover plate, and a threaded groove is provided on a side thereof facing the limit baffle plate; a plurality of screw holes are provided on the limit baffle plate, and the limit baffle plate is fixed to the stopper by means of hexagon socket bolts.

[0013] Preferably, a plurality of limiting holes are provided on the limiting baffle; a plurality of screw holes corresponding to the positions of the limiting holes are provided on the outer side of the end cover, and the end cover is fixed to the limiting baffle by external hexagonal bolts.

[0014] Preferably, a plurality of screw holes three are provided on the outer side of the end cover; a plurality of positioning blocks are arranged at intervals on the side of the heat conducting plate facing the limit baffle, and the positioning blocks are provided with screw holes four and are fixed to the end cover by hexagon socket bolts.

[0015] Preferably, both sides of the air inlet are arranged as inclined surfaces and are in the same direction as the heat sink at the corresponding position.

[0016] Preferably, a flange plate integrally formed therewith is provided on the inner side of the end cover, and screw holes 5 are provided on the flange plate and the flange plate is fixed to the motor housing by bolts.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] (1) The electric vehicle motor anti-demagnetization and cooling device of the utility model can effectively dissipate the heat inside the motor by arranging a heat conduction plate and a heat dissipation plate, thereby reducing the internal temperature of the motor when it is working and preventing the motor from demagnetizing; the limit baffle can prevent cement, sand and gravel from entering the interior of the click, thereby avoiding damage to the motor due to external factors.

[0019] (2) In the electric vehicle motor anti-demagnetization and cooling device of the utility model, the air inlet on the side of the outer cover plate corresponds to the position of the heat dissipation plate, which is conducive to accelerating heat dissipation; a heat conduction cylinder is provided in the middle of the heat conduction plate to guide the hot air out of the avoidance groove three.

[0020] (3) The anti-demagnetization and cooling device for the electric vehicle motor of the present utility model is provided with a sealed bearing inside the heat-conducting cylinder, which can prevent water from entering the interior of the motor; an arc-shaped groove for the heat-dissipating plate to pass through is provided on the limit baffle, and a waterproof material is coated around the arc-shaped groove, which can further prevent water from entering the interior of the motor. Description of the Drawings

[0021] Figure 1 is the external schematic diagram of the present utility model;

[0022] Figure 2 is the schematic diagram of the end cover of the present utility model;

[0023] Figure 3 is the schematic diagram of the heat-conducting plate and the heat-dissipating plate of the present utility model;

[0024] Figure 4 is the schematic diagram of the limit baffle of the present utility model;

[0025] Figure 5 is the schematic diagram of the outer cover plate of the present utility model;

[0026] Main reference numerals description:

[0027] 1. End cover; 2. First avoidance groove; 3. Limit baffle; 4. Second avoidance groove; 5. Arc-shaped groove; 6. Heat-conducting plate; 7. Heat-dissipating plate; 8. Heat-conducting cylinder; 9. Sealed bearing; 10. Outer cover plate; 11. Third avoidance groove; 12. Block; 13. Air inlet; 14. Threaded groove; 15. First screw hole; 16. Limit hole; 17. Second screw hole; 18. Third screw hole; 19. Positioning block; 20. Fourth screw hole; 21. Flange plate; 22. Fifth screw hole. Detailed implementation manners

[0028] The technical solutions of the patent of the present utility model will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be noted that, as terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the utility model.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the connection inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] Referring to the attached Figures 1-5 , an anti-demagnetization and cooling device for an electric vehicle motor, comprising:

[0032] An end cover 1, in the middle of which there is an avoidance groove 1-2; on the inner side of the end cover 1, there is a flange plate 21 integrally formed therewith. A fifth screw hole 22 is provided on the flange plate 21 and is fixed to the motor housing by bolts;

[0033] A limit baffle 3, fixed on the outer side of the end cover 1, in the middle of which there is an avoidance groove 2-4; a plurality of arc grooves 5 are provided on the limit baffle around the avoidance groove 2-4;

[0034] A heat-conducting plate 6, fixed on the inner side of the end cover 1, on which there are a plurality of arc-shaped heat dissipation plates 7; one end of the heat dissipation plate 7 passes through the arc groove 5 at the corresponding position; in the middle of the heat-conducting plate 6, there is also a heat-conducting cylinder 8; the heat-conducting cylinder 8 passes through the avoidance groove 2-4, and a sealed bearing 9 is provided inside it, which can prevent water from entering the motor interior; the middle of the sealed bearing 9 is penetrated by a support shaft;

[0035] An outer cover plate 10, fixed on the side of the limit baffle 3 away from the heat-conducting plate 6, in the middle of which there is an avoidance groove 3-11; a plurality of stoppers 12 are provided at intervals on the inner side of the outer cover plate 10; an air inlet 13 is separated between two adjacent stoppers 12, and the air inlet 13 corresponds to the position of the heat dissipation plate 7.

[0036] In this embodiment, the end cover 1, the heat-conducting plate 6, and the limit baffle 3 all adopt a circular structure. The stopper 12 and the outer cover plate 10 are integrally formed, and a threaded groove 14 is provided on the side facing the limit baffle 3; a plurality of first screw holes 15 are provided on the limit baffle 3 and are fixed to the stopper 12 by internal hexagon bolts. A plurality of limit holes 16 are provided on the limit baffle 3; a plurality of second screw holes 17 corresponding to the positions of the limit holes 16 are provided on the outer side of the end cover 1, and the end cover 1 is fixed to the limit baffle 3 by external hexagon bolts.

[0037] On the outer side of the end cover 1, a plurality of third screw holes 18 are also provided; on the side of the heat conduction plate 6 facing the limit baffle 3, a plurality of positioning blocks 19 are arranged at intervals. A fourth screw hole 20 is provided on the positioning block 19 and is fixed to the end cover 1 by an internal hexagonal bolt. In addition, the positioning block 19 can separate the heat conduction plate 6 from the end cover 1 by a certain interval, which is convenient for installation and disassembly. At the same time, both sides of the heat conduction plate 6 can quickly absorb heat, which is convenient for quickly transferring the heat through the heat dissipation plate 7.

[0038] It should be noted that both sides of the air inlet 13 are set as inclined surfaces and are in the same direction as the corresponding positions of the heat dissipation plate 7. When the vehicle is moving, the wind can blow out from the air inlet 13 and pass through both sides of the heat dissipation plate 7, taking away the heat and becoming hot air. After the hot air collides with the heat conduction cylinder 8, it can blow out from the third avoidance groove 11 in the middle of the outer cover plate 10, and at the same time, it can also take away part of the heat on the heat conduction cylinder 8, which is beneficial to further realizing the heat dissipation and temperature reduction of the motor.

[0039] During actual installation, first fix the limit baffle 3 and the outer cover plate 10 with internal hexagonal bolts; then, fix the heat conduction plate 6 and the end cover 1 together with internal hexagonal bolts; then, pass the heat dissipation plate 7 on the heat conduction plate 6 through the first avoidance groove 2 in the middle of the end cover 1, and align it with the arc-shaped groove 5 provided on the limit baffle 3. After knocking and pressing, make the heat dissipation plate 7 enter the cavity between the outer cover plate 10 and the limit baffle 3, so that each heat dissipation plate 7 corresponds to the air inlet 13 at the corresponding position. After completing the above steps, fix the limit baffle 3 on the end cover 1 with an external hexagonal screw, and finally fix the end cover 1 to the motor housing with bolts.

[0040] The anti-demagnetization and temperature reduction device for the electric vehicle motor of the present invention transfers the heat inside the motor to the outside for air-cooled heat dissipation by setting the heat conduction plate 6 and the heat dissipation plate 7. At the same time, it can prevent cement, sand and gravel from entering the motor, solves the problem that the existing technology may cause the motor to be damaged by water ingress, is very practical, and has a good market application prospect.

[0041] The foregoing description of the specific exemplary embodiments of the present invention is for the purposes of illustration and exemplification. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations are possible in light of the above teaching. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical applications, so that those skilled in the art can implement and utilize various different exemplary embodiments of the present invention, as well as various different selections and changes. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. An anti-demagnetization and cooling device for an electric vehicle motor, characterized in that: include: The end cover has an avoidance groove in the middle thereof; A limit baffle is fixed on the outer side of the end cover, and a second avoidance groove is opened in the middle thereof; a plurality of arc grooves surrounding the second avoidance groove are opened on the limit baffle; A heat conducting plate is fixed on the inner side of the end cover, and a plurality of arc-shaped heat dissipation plates are provided on the heat conducting plate; one end of the heat dissipation plate passes through the arc-shaped groove at the corresponding position; a heat conducting cylinder is also provided in the middle of the heat conducting plate; the heat conducting cylinder passes through the second avoidance groove, and a sealed bearing is provided inside the heat conducting cylinder; The outer cover is fixed on the side of the limit baffle away from the heat conduction plate, and a avoidance groove three is opened in the middle; a plurality of blocks are arranged at intervals on the inner side of the outer cover; an air inlet is separated between two adjacent blocks, and the air inlet corresponds to the position of the heat dissipation plate.

2. The electric vehicle motor anti-demagnetization and temperature reduction device according to claim 1, characterized in that: The stopper is integrally formed with the outer cover plate, and a thread groove is provided on a side of the stopper facing the limit baffle plate; a plurality of screw holes are provided on the limit baffle plate, and the stopper is fixed to the stopper by hexagon socket bolts.

3. The electric vehicle motor anti-demagnetization and temperature reduction device according to claim 1, characterized in that: The limit baffle is provided with a plurality of limit holes; the outer side of the end cover is provided with a plurality of screw holes corresponding to the positions of the limit holes, and is fixed to the limit baffle by external hexagonal bolts.

4. The electric vehicle motor anti-demagnetization and temperature reduction device according to claim 1, characterized in that: The outer side of the end cover is also provided with a plurality of screw holes three; a plurality of positioning blocks are arranged at intervals on the side of the heat conducting plate facing the limit baffle, and the positioning blocks are provided with screw holes four and are fixed to the end cover by hexagon socket bolts.

5. The electric vehicle motor anti-demagnetization and temperature reduction device according to claim 1, characterized in that: Both sides of the air inlet are arranged as inclined surfaces and are in the same direction as the heat dissipation plates at corresponding positions.

6. The electric vehicle motor anti-demagnetization and temperature reduction device according to claim 1, characterized in that: The inner side of the end cover is provided with a flange plate integrally formed therewith, and the flange plate is provided with screw holes 5 and is fixed to the motor housing by bolts.

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