Water-cooled motor casing

Abstract

The utility model relates to a motor water cooling machine shell is equipped with a plurality of heat dissipation water channels between the inner surface and the outer surface of the shell, and a raised heat dissipation rib is arranged in each heat dissipation water channel, and a raised heat dissipation fin is arranged on the heat dissipation rib; the extension directions of the heat dissipation water channel, the heat dissipation rib and the heat dissipation fin are parallel to the axis of the shell. Compared with the prior art, the utility model has the advantages that the heat dissipation rib is arranged in the heat dissipation water channel, and the heat dissipation fin is arranged on the heat dissipation rib, thereby greatly increasing the contact area of the inner wall of the heat dissipation water channel and the cooling water, and when the cooling water flows through the water channel, more heat can be carried away.

Description

Technical Field

[0001] This utility model relates to electric motors, and more particularly to a water-cooled housing for an electric motor. Background Technology

[0002] With the development of new energy vehicles, the performance of drive systems is undergoing continuous and significant improvements; however, this places higher demands on the cooling and heat dissipation of the engine casing. For water-cooled casings, their heat dissipation effect largely depends on a reasonable water channel layout; within a limited space, it is crucial to ensure that cooling water can flow sufficiently through all critical parts of the casing to remove the heat generated during motor operation. When the motor operates continuously for extended periods, or under extreme conditions such as high-speed climbing, rapid acceleration, and rapid deceleration, existing water-cooling structures can no longer meet the cooling requirements of the casing, seriously affecting motor performance and safety.

[0003] A search revealed that application publication number CN103812259A discloses a casing comprising an inner cylinder, an outer cylinder, and a liquid-cooled cavity between the inner and outer cylinders. The outer cylinder has an inlet and an outlet. Multiple ribs are axially arranged between the inner and outer cylinders, dividing the liquid-cooled cavity into multiple interconnected circulation channels. These circulation channels contain ridge-shaped heat sinks. However, the heat dissipation effect of this prior art still cannot meet the requirements.

[0004] In summary, designing a water-cooled motor housing with good heat dissipation is a technical problem that needs to be solved. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology in terms of poor heat dissipation and to provide a water-cooled housing for motors.

[0006] The objective of this utility model can be achieved through the following technical solutions.

[0007] According to one aspect of the present invention, a water-cooled housing for an electric motor is provided, wherein a plurality of heat dissipation channels are provided between the inner and outer surfaces of the housing, each of the heat dissipation channels is provided with a raised heat dissipation rib, and the heat dissipation rib is provided with a raised heat dissipation fin; the extending directions of the heat dissipation channels, heat dissipation ribs and heat dissipation fins are all parallel to the axis of the housing.

[0008] As a preferred technical solution, each of the aforementioned heat dissipation channels is provided with multiple heat dissipation fins.

[0009] As a preferred technical solution, the heat dissipation fins include a first heat dissipation fin and a second heat dissipation fin, wherein the first heat dissipation fin is located on the side of the heat dissipation channel closer to the center of the casing, and the second heat dissipation fin is located on the side of the heat dissipation channel away from the center of the casing.

[0010] As a preferred technical solution, the first heat dissipation fin and the second heat dissipation fin are arranged alternately in sequence.

[0011] As a preferred technical solution, there are three heat dissipation fins, two of which are located on the side of the heat dissipation channel closer to the center of the casing, and the other heat dissipation fin is located on the side of the heat dissipation channel away from the center of the casing.

[0012] As a preferred technical solution, the outer surface of the casing is provided with a platform, and the platform has a water inlet and a water outlet.

[0013] As a preferred technical solution, the heat dissipation fins are located on the side of the heat dissipation channel away from the platform.

[0014] As a preferred technical solution, the distance between the multiple heat dissipation fins is the same.

[0015] As a preferred technical solution, the heat dissipation fins are located in the middle of the heat dissipation ribs.

[0016] As a preferred technical solution, the cross-section of the heat dissipation channel is fan-shaped; the plurality of heat dissipation channels are evenly distributed on the casing.

[0017] Compared with the prior art, the present invention has the following beneficial effects.

[0018] 1) By setting heat dissipation fins in the heat dissipation channel and setting heat dissipation fins on the heat dissipation fins, the contact area between the inner wall of the heat dissipation channel and the cooling water is greatly increased. When the cooling water flows through the channel, it can carry away more heat.

[0019] 2) This utility model is equipped with multiple heat dissipation fins and heat dissipation tubes in the heat dissipation channel, which can be set according to needs to ensure heat dissipation effect.

[0020] 3) The present invention provides a first heat dissipation rib and a second heat dissipation rib on both sides of the heat dissipation channel, the first heat dissipation rib and the second heat dissipation rib are arranged alternately, the heat dissipation fins are located in the middle of the heat dissipation ribs, and the distance between the heat dissipation ribs is the same, all of which can improve the uniformity of heat dissipation.

[0021] 4) The heat dissipation fins of this utility model are located only on the side of the heat dissipation channel away from the platform, which can prevent the heat dissipation from being affected by the thickness of the platform.

[0022] 5) The cross-section of the heat dissipation channel of this utility model is a fan-shaped ring, which conforms to the shape of the casing, and the heat dissipation channel is evenly distributed on the circumference of the casing, which can improve the heat dissipation effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a water-cooled motor housing according to the present invention.

[0024] Figure 2 This is a cross-sectional view of a water-cooled motor housing of the present invention, perpendicular to the axis.

[0025] Figure 3 This utility model Figure 2 A partial schematic diagram.

[0026] Figure 4 This is a cross-sectional view of a water-cooled motor housing of the present invention, parallel to the axis.

[0027] The numbers in the diagram are as follows: 1. Cooling channel, 2. Cooling fin, 21. First cooling fin, 22. Second cooling fin, 3. Cooling fin, 4. Platform, 41. Inlet, 42. Outlet. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0029] This utility model provides a water-cooled housing for an electric motor. Multiple heat dissipation channels 1 are provided between the inner and outer surfaces of the housing. Each heat dissipation channel 1 contains raised heat dissipation ribs 2, and raised heat dissipation fins 3 are provided on the heat dissipation ribs 2. The extending directions of the heat dissipation channels 1, heat dissipation ribs 2, and heat dissipation fins 3 are all parallel to the axis of the housing.

[0030] The cross-section of cooling channel 1 is a fan-shaped ring with semi-circular ends. The fan-shaped ring is concentric with the outer and inner circles of the chassis cross-section. There are multiple cooling channels 1, evenly distributed around the circumference of the chassis. Cooling channels 1 avoid the location of the chassis mounting flange protrusion to prevent the thicker chassis at that location from affecting heat dissipation.

[0031] Each cooling channel 1 contains one or more cooling ribs 2, including a first cooling rib 21 and a second cooling rib 22. The first cooling rib 21 is located on the side of the cooling channel 1 closer to the center of the casing, and the second cooling rib 22 is located on the side of the cooling channel 1 away from the center of the casing. The number and position of the cooling ribs 2 can be determined according to requirements; only the first cooling rib 21, the second cooling rib 22, or both can be provided. The sequential and alternating arrangement of the first cooling rib 21 and the second cooling rib 22 can ensure more uniform heat dissipation. Figure 2 and Figure 3As shown, the casing has a platform 4, which has an inlet 41 and an outlet 42. The heat dissipation channel 1 near the platform 4 has only two second heat dissipation ribs 22 to prevent the platform 4 from being too thick and affecting heat dissipation. The other heat dissipation channels 1 have one first heat dissipation rib 21 and two second heat dissipation ribs 22. The three heat dissipation ribs 2 are evenly distributed in the heat dissipation channels 1 with equal spacing between each pair. The heat dissipation rib 2 in the figure has a rectangular cross-section, but it can also be set to other shapes.

[0032] like Figure 4 As shown, the heat dissipation fins 3 are located in the middle of the heat dissipation ribs 2, and each heat dissipation rib 2 is provided with heat dissipation fins 3. The heat dissipation fins 3 can further increase the heat dissipation area and improve the heat dissipation performance.

[0033] This invention adds heat dissipation fins 2 and heat dissipation fins 3 inside the water channel of the casing, which can increase the contact area between the inner wall of the water channel and the cooling water. When the cooling water flows through the water channel, compared with the structure without heat dissipation fins 2, it can carry away more heat, which can greatly improve the heat dissipation efficiency and meet the heat dissipation requirements of the motor.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A water-cooled housing for an electric motor, characterized in that, Multiple heat dissipation channels (1) are provided between the inner and outer surfaces of the casing. Each heat dissipation channel (1) is provided with a raised heat dissipation rib (2), and the heat dissipation rib (2) is provided with a raised heat dissipation fin (3). The extension directions of the heat dissipation channels (1), heat dissipation ribs (2) and heat dissipation fins (3) are all parallel to the axis of the casing.

2. The water-cooled housing for an electric motor according to claim 1, characterized in that, Each of the aforementioned heat dissipation channels (1) is provided with multiple heat dissipation fins (2).

3. The water-cooled housing for an electric motor according to claim 2, characterized in that, The heat dissipation rib (2) includes a first heat dissipation rib (21) and a second heat dissipation rib (22). The first heat dissipation rib (21) is located on the side of the heat dissipation channel (1) closer to the center of the casing, and the second heat dissipation rib (22) is located on the side of the heat dissipation channel (1) away from the center of the casing.

4. The water-cooled housing for an electric motor according to claim 3, characterized in that, The first heat dissipation fin (21) and the second heat dissipation fin (22) are arranged alternately.

5. A water-cooled motor housing according to claim 2, characterized in that, There are three heat dissipation fins (2), two of which are located on the side of the heat dissipation channel (1) closer to the center of the casing, and the other heat dissipation fin (2) is located on the side of the heat dissipation channel (1) away from the center of the casing.

6. The water-cooled housing for an electric motor according to claim 1, characterized in that, The outer surface of the casing is provided with a platform (4), and the platform (4) has an inlet (41) and an outlet (42).

7. A water-cooled motor housing according to claim 6, characterized in that, The heat dissipation fin (2) is located on the side of the heat dissipation channel (1) away from the platform (4).

8. The water-cooled housing for an electric motor according to claim 2, characterized in that, The distance between the multiple heat dissipation fins (2) is the same.

9. A water-cooled motor housing according to claim 1, characterized in that, The heat dissipation fins (3) are located in the middle of the heat dissipation ribs (2).

10. A water-cooled motor housing according to claim 1, characterized in that, The heat dissipation channel (1) has a fan-shaped cross-section; multiple heat dissipation channels (1) are evenly distributed on the casing.

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