A driving motor fish scale water channel structure and a driving motor

Abstract

The application relates to the technical field of motor water cooling, in particular to a driving motor fish scale water channel structure and a driving motor. The driving motor fish scale water channel structure comprises a hollow cavity water channel arranged between an inner motor shell and an outer motor shell, a plurality of protrusions are regularly arranged in the hollow cavity water channel, and the protrusions are arranged on the inner motor shell in a fish scale shape; a water inlet and a water outlet are arranged on the outer motor shell, the water outlet can be arranged on any position of the outer motor shell, the water inlet and the water outlet are communicated through the hollow cavity water channel, and the hollow cavity water channel is used for liquid flow of the water-cooled motor. The plurality of protrusions arranged on the inner motor shell in a fish scale shape are arranged in the hollow cavity water channel, each protrusion forms a pressure difference, and the liquid flow of the water-cooled motor is promoted; due to the regular arrangement of the protrusions in the hollow cavity water channel, the water outlet can be arranged on any position of the outer motor shell, the production cost is reduced, the motor can realize good heat dissipation effect, and the requirement of motor flexible manufacturing is met.

Description

Technical Field

[0001] This invention relates to the field of motor water cooling technology, and in particular to a fish-scale water channel structure for a drive motor and a drive motor. Background Technology

[0002] With the development of new energy vehicles, the energy-saving and environmentally friendly trend of electric vehicles is unstoppable. As one of the core "three-electric systems" of electric vehicles, the drive motor is developing towards higher power density, higher efficiency, higher reliability, and lower cost. The increasing power density of electric vehicle drive motors leads to higher heat generation and more uneven temperature distribution. Excessive temperature can cause motor performance degradation and, in severe cases, motor burnout; uneven temperature can cause localized thermal stress concentration in the motor, affecting structural stability and, in severe cases, causing structural failure.

[0003] In the prior art, the water-cooled housing of the drive motor achieves heat exchange through direct contact with the outer wall of the stator, and the heat is carried away by the coolant flowing through the water channels. Existing water-cooled housings typically employ two types of water channels: zigzag water channels and spiral water channels, such as the motor housing with cooling water channels disclosed in Chinese Patent Application No. 201720775570.7.

[0004] However, in the existing technology, the Z-shaped water channel has high flow resistance and a large pressure difference between the inlet and outlet, resulting in a large temperature difference between the inlet and outlet and a more complicated manufacturing process. Although the double spiral water channel has low water resistance, the pitch and angle of the spiral must change as long as the position of the inlet and outlet changes, which leads to an increase in mold cost and a smaller range of applications. Summary of the Invention

[0005] To address the shortcomings of existing technologies, such as the complex manufacturing process of the zigzag waterway and the increased template cost due to changes in the inlet and outlet positions of the spiral waterway, this invention provides a fish-scale waterway structure for a drive motor. The outlet can be distributed at any position on the outer casing, reducing production costs while ensuring good heat dissipation for the motor and meeting the requirements of flexible motor manufacturing.

[0006] The present invention provides a fish-scale water channel structure for a drive motor, including a hollow cavity water channel disposed between an inner housing and an outer housing, wherein a plurality of protrusions are regularly arranged in the hollow cavity water channel, and the protrusions are arranged in a fish-scale pattern on the inner housing;

[0007] The outer casing is provided with a water inlet and a water outlet. The water outlet can be distributed at any position on the outer casing. The water inlet and the water outlet are connected through the hollow cavity water channel, which is used for the liquid flow of the water-cooled motor.

[0008] Furthermore, the outer casing is fitted onto the inner casing, and both the inner and outer casings are cylindrical in shape, while the cross-section of the hollow cavity water channel is circular.

[0009] Furthermore, the protrusion is fixedly disposed on the outer wall of the inner casing.

[0010] Furthermore, the protrusions are arranged in several rows circumferentially on the outer wall of the inner casing.

[0011] Furthermore, each row of protrusions is circumferentially staggered on the outer wall of the inner casing, and each row of protrusions is axially equally distributed on the outer wall of the inner casing.

[0012] Furthermore, each of the protrusions is inclined in both the circumferential and axial directions on the outer wall of the inner casing.

[0013] Furthermore, the number of protrusions in two circumferentially spaced columns is the same, while the number of protrusions in two circumferentially adjacent columns is different.

[0014] Furthermore, in two circumferentially adjacent columns of protrusions, the number of protrusions in one column differs from the number of protrusions in the other column by one protrusion.

[0015] Furthermore, the protrusion is an elliptical protrusion.

[0016] The present invention also provides a drive motor, including a motor body and a motor housing, wherein the motor body is fitted with the motor housing, and the motor housing includes cooling water channels, wherein the cooling water channels adopt a fish scale water channel structure for a drive motor as described in any of the preceding claims.

[0017] Compared with the prior art, the present invention provides a fish-scale water channel structure for a drive motor. The hollow cavity water channel is located between the inner and outer housings. By setting several fish-scale-shaped protrusions on the inner housing within the hollow cavity water channel, each protrusion creates a pressure difference, which promotes the flow of liquid in the water-cooled motor. Due to the regular arrangement of the protrusions inside the hollow cavity water channel, the water outlets can be distributed at any position on the outer housing. The arbitrary distribution of the water outlets can still achieve normal flow of liquid in the central cavity water channel, reducing production costs while ensuring good heat dissipation of the motor, thus meeting the requirements of flexible manufacturing of motors. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the fish-scale waterway structure provided by the present invention;

[0020] Figure 2 A schematic diagram of the inlet and outlet provided by the present invention;

[0021] Figure 3 A side view of the fish-scale waterway structure provided by the present invention;

[0022] Figure 4 This is a schematic diagram of the protrusion provided by the present invention.

[0023] Figure label:

[0024] 10 Inner casing 11 Outer casing 20 Protrusion

[0025] 30 Inlet 31 Outlet Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Figure 1 This is a schematic diagram of the fish-scale waterway structure provided by the present invention, as shown below. Figure 1 As shown, the present invention provides a drive motor fish scale water channel structure, including a hollow cavity water channel disposed between the inner housing 10 and the outer housing 11. The hollow cavity water channel is regularly provided with a plurality of protrusions 20, which are arranged in a fish scale pattern on the inner housing 10.

[0029] The outer casing 11 is provided with a water inlet 30 and a water outlet 31. The water outlet 31 can be distributed at any position on the outer casing 11. The water inlet 30 and the water outlet 31 are connected through the hollow cavity water channel, which is used for the liquid flow of the water-cooled motor.

[0030] In specific implementation, such as Figures 1 to 3 As shown, a hollow cavity water channel is disposed between the inner housing 10 and the outer housing 11. Several protrusions 20 are regularly arranged inside the hollow cavity water channel. The protrusions 20 are arranged on the inner housing 10 in a fish scale pattern. The outer housing 11 is fitted onto the inner housing 10. Preferably, in this embodiment, the outer housing 11 and the inner housing 10 are cylindrical in shape, and the interface of the hollow cavity water channel is circular. The two ends of the inner housing 10 protrude relative to each other from the middle of the inner housing 10. The two ends of the inner housing 10 are locked onto the outer housing 11, and the outer housing 11 is fitted onto the middle of the inner housing 10.

[0031] The outer casing 11 is provided with a water inlet 30 and a water outlet 31. The water outlet 31 can be distributed at any position on the outer casing 11. The water inlet 30 and the water outlet 31 are connected through a hollow cavity water channel. The liquid of the water-cooled motor can flow in the hollow cavity water channel. The liquid of the water-cooled motor enters from the water inlet 30, flows through the hollow cavity water channel, and exits from the water outlet 31. The water outlet 31 can be distributed arbitrarily to achieve normal flow of the liquid of the water-cooled motor inside the hollow cavity water channel. Preferably, in this embodiment, the water inlet 30 and the water outlet 31 are located on different horizontal lines. The positions of the water inlet 30 and the water outlet 31 can be arbitrarily interchanged. The water outlet 31 can be symmetrical or asymmetrically arranged relative to the water inlet 30. The liquid of the water-cooled motor can be water or coolant.

[0032] By regularly arranging several protrusions 20 in a fish-scale pattern on the inner casing 10 within the hollow cavity water channel, a pressure difference is formed by each protrusion 20, which promotes the flow of liquid in the water-cooled motor. Due to the regular arrangement of the protrusions 20 inside the hollow cavity water channel, the outlets 31 can be distributed at any position on the outer casing 11. The random distribution of the outlets can ensure the normal flow of liquid in the water-cooled motor within the central control cavity water channel, reducing production costs while ensuring good heat dissipation of the motor and meeting the requirements of flexible motor manufacturing.

[0033] Specifically, such as Figures 1 to 4 As shown, a number of protrusions 20 are regularly arranged inside the hollow cavity water channel. The protrusions 20 are fixed on the outer wall of the middle part of the inner housing 10 in a fish scale pattern. Preferably, in this embodiment, the protrusions 20 can be fixed on the outer wall of the inner housing 10 by welding or snap-fitting. The shape of the protrusions 20 is an elliptical protrusion.

[0034] like Figures 1 to 3As shown, the protrusions 20 are arranged in several rows circumferentially on the outer wall of the inner housing 10. Each row of protrusions 20 is staggered circumferentially on the outer wall of the inner housing 10, and each row of protrusions 20 is equally distributed axially on the outer wall of the inner housing 10. Each protrusion 20 is inclined both circumferentially and axially on the outer wall of the inner housing 10, so that each segment of the protrusion 20 in the circumferential direction forms a pressure difference, which promotes the circumferential flow of the liquid in the water-cooled motor; each segment of the protrusion 20 in the axial direction also forms a pressure difference, which promotes the linear flow of the liquid in the water-cooled motor.

[0035] like Figures 1 to 3 As shown, the number of protrusions 20 in two circumferentially spaced columns is the same, while the number of protrusions 20 in two adjacent circumferentially columns is different. The number of protrusions in one column of two adjacent circumferentially columns differs from the number of protrusions in the other column by one protrusion. Preferably, in this embodiment, the number of protrusions 20 in one column of two adjacent circumferentially columns is eight, and the number of protrusions in the other column is seven.

[0036] The present invention also provides a drive motor, including a motor body and a motor housing, wherein the motor body is fitted with the motor housing, and the motor housing includes cooling water channels, wherein the cooling water channels adopt a fish scale water channel structure for a drive motor as described in any of the preceding claims.

[0037] The present invention provides a fish-scale water channel structure for a drive motor. In actual motor cooling, the cooling liquid enters the hollow cavity water channel from the inlet 30 and flows inside. Several protrusions 20 arranged in a fish-scale pattern on the inner casing 10 are regularly arranged inside the hollow cavity water channel. Each protrusion 20 is inclined in both the circumferential and axial directions. Each segment of the protrusion 20 in the circumferential and axial directions forms a pressure difference, which promotes the circumferential and linear flow of the liquid in the water-cooled motor. Finally, the liquid in the water-cooled motor is discharged from the outlet 31.

[0038] Compared with the prior art, the present invention provides a fish-scale water channel structure for a drive motor. The hollow cavity water channel is located between the inner and outer housings. By setting several fish-scale-shaped protrusions on the inner housing within the hollow cavity water channel, each protrusion creates a pressure difference, which promotes the flow of liquid in the water-cooled motor. Due to the regular arrangement of the protrusions inside the hollow cavity water channel, the water outlets can be distributed at any position on the outer housing. The arbitrary distribution of the water outlets can still achieve normal flow of liquid in the central cavity water channel, reducing production costs while ensuring good heat dissipation of the motor, thus meeting the requirements of flexible manufacturing of motors.

[0039] Although this document frequently uses terms such as inner casing, outer casing, protrusion, inlet, and outlet, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fish-scale waterway structure for driving a motor, characterized in that: It includes a hollow cavity water channel between the inner casing (10) and the outer casing (11), and a number of protrusions (20) are regularly arranged in the hollow cavity water channel. The protrusions (20) are arranged in a fish scale pattern on the inner casing (10). The outer casing (11) is provided with a water inlet (30) and a water outlet (31). The water outlet (31) can be distributed at any position on the outer casing (11). The water inlet (30) and the water outlet (31) are located on different horizontal lines. The water inlet (30) and the water outlet (31) are connected through the hollow cavity water channel. The hollow cavity water channel is used for the liquid flow of the water-cooled motor. The protrusions (20) are arranged in several rows on the outer wall of the inner casing (10) in a circumferential direction. Each row of protrusions (20) is staggered on the outer wall of the inner casing (10) in a circumferential direction. Each row of protrusions (20) is axially evenly distributed on the outer wall of the inner casing (10). Each protrusion (20) is inclined on both the circumferential and axial directions on the outer wall of the inner casing (10).

2. The fish-scale waterway structure for a drive motor according to claim 1, characterized in that: The outer casing (11) is fitted onto the inner casing (10). The inner casing (10) and the outer casing (11) are cylindrical in shape, and the cross-section of the hollow cavity water channel is circular.

3. The fish-scale waterway structure for a drive motor according to claim 2, characterized in that: The protrusion (20) is fixedly disposed on the outer wall of the inner casing (10).

4. The fish-scale waterway structure for a drive motor according to claim 1, characterized in that: The number of protrusions (20) in two circumferentially spaced columns is the same, while the number of protrusions (20) in two circumferentially adjacent columns is different.

5. The fish-scale waterway structure for a drive motor according to claim 4, characterized in that: The number of protrusions (20) in two adjacent columns in the circumferential direction, wherein the number of protrusions (20) in one column differs from the number of protrusions (20) in the other column by one protrusion (20).

6. The fish-scale waterway structure for a drive motor according to claim 1, characterized in that: The protrusion (20) is an elliptical protrusion.

7. A drive motor, characterized in that: It includes a motor body and a motor housing, the motor body is fitted with the motor housing, the motor housing includes cooling water channels, and the cooling water channels adopt a fish scale water channel structure for a drive motor as described in any one of claims 1-6.

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