Cooling device for an electrically driven axle

Abstract

This utility model discloses a cooling device for an electric drive axle, relating to the field of electric drive axle technology. The cooling device includes a bridge body with an internal mounting cavity extending through it. A first cooling channel is located at the upper end of the mounting cavity, and a second cooling channel is located at the lower end. Both the first and second cooling channels include a first water flow cavity, a second water flow cavity, and a third water flow cavity, which are interconnected. Heat dissipation components are located at both the upper and lower ends of one end of the bridge body, with the heat dissipation components corresponding to the third water flow cavity. This solution solves the problem that existing electric drive axle cooling relies on water flow gaps, resulting in short water retention time, minimal heat removal, poor cooling effect, and water waste.

Description

Technical Field

[0001] This utility model relates to the field of electric drive bridge technology, specifically to a cooling device for an electric drive bridge. Background Technology

[0002] An electric drive axle is a device that converts electrical energy into mechanical energy. It is mainly used to drive vehicles or other means of transportation. The working principle of an electric drive axle is to convert electrical energy into mechanical energy to drive the vehicle forward. Electric drive axles require cooling because they generate a lot of heat during operation. If they are not cooled, the system may overheat, affecting its performance and lifespan.

[0003] For example, the Chinese authorized patent CN221151120U (Cooling Device for Electric Drive Axle) includes a cooling device that uses a heat exchanger to cool oil within the electric drive axle. The electric pump that circulates the oil within the electric drive axle is integrated with the heat exchanger, thereby reducing the number of components and simplifying the structure. It comprises: an electric pump that circulates oil within the electric drive axle to cool it; and an oil cooler that constitutes the heat exchanger. The electric pump includes a motor, an internal gear pump, and a motor housing housing them. The motor housing has an oil inlet at one end of the motor's rotating shaft and an oil outlet at the other end, through which oil flows within the motor. The oil cooler has a cooler housing that covers the motor housing from the outside, through which cooling water flows. The motor housing has heat sink fins on its outer wall.

[0004] However, existing electric drive axle cooling relies on water flow through gaps in the water flow, resulting in short water residence time, minimal heat removal, poor cooling performance, and water waste. Therefore, it does not meet current requirements. To address this, we propose a cooling device for electric drive axles. Utility Model Content

[0005] The purpose of this invention is to provide a cooling device for an electric drive axle to solve the problems mentioned in the background art, namely, that the existing electric drive axle cooling relies on water flow through water gaps, resulting in short water flow time, minimal heat removal, poor cooling effect, and easy water waste.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cooling device for an electric drive bridge, comprising: a bridge body, wherein an installation cavity is provided inside the bridge body and extends through the bridge body from front to back; a first cooling channel is provided at the upper end of the installation cavity and a second cooling channel is provided at the lower end of the installation cavity; both the first and second cooling channels include a first water flow cavity, a second water flow cavity, and a third water flow cavity, and the first, second, and third water flow cavities are interconnected; and heat dissipation components are provided at both the upper and lower ends of one end of the bridge body, with the heat dissipation components corresponding to the positions of the third water flow cavity.

[0007] Preferably, the first water flow cavity is provided with a first blocking seat and a second blocking seat, and the first blocking seat and the second blocking seat are installed in a staggered manner, and multiple first blocking seats and multiple second blocking seats are provided.

[0008] Preferably, a water flow gap is formed between one end of the first blocking seat and the second blocking seat, a first reinforcing seat is provided on the inner wall of one end of the first water flow cavity, and the first reinforcing seat is welded and fixed to the bridge body, and a second reinforcing seat is provided on one end of the third water flow cavity, and the second reinforcing seat is welded and fixed to the bridge body.

[0009] Preferably, the heat dissipation assembly includes a mounting base plate, the upper surface of which is provided with heat sinks, which are welded and fixed to the mounting base plate, and multiple heat sinks are provided.

[0010] Preferably, the heat dissipation assembly further includes a fixing plate, which is installed on the front and rear surfaces of both ends of the mounting base plate and welded to the mounting base plate. The front end of the fixing plate is provided with a fixing bolt, and one end of the fixing bolt passes through the fixing plate and is fixed to the bridge body.

[0011] Preferably, the front surface of one end of the bridge body is provided with a first drain outlet and a second drain outlet, and the first drain outlet and the second drain outlet are respectively connected to the third water flow cavity of the first cooling channel and the second cooling channel. The upper surface of the other end of the bridge body is provided with a first water inlet, and the lower surface of the other end of the bridge body is provided with a second water inlet, and the first water inlet and the second water inlet are respectively connected to the first water flow cavity of the first cooling channel and the second cooling channel.

[0012] Preferably, both the first reinforcing seat and the second reinforcing seat are made of stainless steel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model provides a first cooling channel and a second cooling channel at the upper and lower ends of the mounting cavity, respectively. Both the first and second cooling channels include a first water flow cavity, a second water flow cavity, and a third water flow cavity, which are interconnected. Three-stage water cooling is achieved through the first, second, and third water flow cavities, thereby improving the cooling effect. The first water flow cavity is equipped with a first blocking seat and a second blocking seat, which are installed in a staggered manner. Water flows from the water flow gap, thereby increasing the distance the water flows and thus increasing the water retention time. In this design, more heat is absorbed and then flows through the second and third water flow chambers, exiting from the first and second drain outlets to achieve a cooling effect, reduce water waste, and improve cooling efficiency. Furthermore, the heat inside the third water flow chamber is conducted away through heat sinks, and the heat is also conducted away through the heat sinks as the water passes through the third water flow chamber, further improving the cooling effect of the electric drive bridge. This solves the problem that existing electric drive bridge cooling systems use water flow gaps, resulting in short water residence time, minimal heat removal, poor cooling performance, and water waste.

[0015] (2) By placing the mounting base plate on the outer surface of the bridge body and fixing it to the bridge body with fixing bolts, the heat dissipation component is fixed to the bridge body. The detachable heat dissipation component is easy to disassemble and replace, improving convenience and flexibility. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall right-side view of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the bridge body of this utility model;

[0019] Figure 4 This is a schematic diagram of the heat dissipation component structure of this utility model;

[0020] In the diagram: 1. Bridge body; 2. Mounting cavity; 3. First cooling channel; 4. First reinforcing seat; 5. First water inlet; 6. Second cooling channel; 7. Heat dissipation assembly; 8. Second reinforcing seat; 9. First drain outlet; 10. First water flow cavity; 11. Second water flow cavity; 12. Third water flow cavity; 13. First blocking seat; 14. Second blocking seat; 15. Water flow notch; 16. Mounting base plate; 17. Heat sink; 18. Fixing plate; 19. Fixing bolt; 20. Second water inlet; 21. Second drain outlet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-4 This utility model provides an embodiment of a cooling device for an electric drive axle, comprising: an axle body 1, an installation cavity 2 provided inside the axle body 1, and the installation cavity 2 extending through the axle body 1 from front to back. The structure required for transmission of the vehicle is installed inside the installation cavity 2, which is prior art, and the installed structure is not shown in the figure. A first cooling channel 3 is provided at the upper end of the installation cavity 2, and a second cooling channel 6 is provided at the lower end of the installation cavity 2. Water cooling is performed through the first cooling channel 3 and the second cooling channel 6. Both the first cooling channel 3 and the second cooling channel 6 include a first water flow cavity 10, a second water flow cavity 11, and a third water flow cavity 12, and the first water flow cavity 10, the second water flow cavity 11, and the third water flow cavity 12 are interconnected. Three-stage water cooling is achieved through the first water flow cavity 10, the second water flow cavity 11, and the third water flow cavity 12 to improve the cooling effect.

[0023] Heat dissipation components 7 are provided at both the upper and lower ends of one end of the bridge body 1, and the heat dissipation components 7 correspond to the positions of the third water flow cavity 12. The heat dissipation effect is further enhanced by the heat dissipation components 7, thereby improving the cooling effect of the electric drive bridge.

[0024] The first water flow cavity 10 is internally provided with a first blocking seat 13 and a second blocking seat 14, which are installed in a staggered manner, and multiple first blocking seats 13 and second blocking seats 14 are provided. Figure 3 As shown, a water flow gap 15 is formed between one end of the first blocking seat 13 and the second blocking seat 14. A first drain outlet 9 and a second drain outlet 21 are provided on the front surface of one end of the bridge body 1, and the first drain outlet 9 and the second drain outlet 21 are respectively interconnected with the third water flow cavity 12 of the first cooling channel 3 and the second cooling channel 6. A first water inlet 5 is provided on the upper surface of the other end of the bridge body 1, and a second water inlet 20 is provided on the lower surface of the other end of the bridge body 1, and the first water inlet 5 and the second water inlet 20 are respectively interconnected with the first water flow cavity 10 of the first cooling channel 3 and the second cooling channel 6. Figure 1 As shown, water is supplied through the first inlet 5 and the second inlet 20. Water enters the first water flow chamber 10 of the first cooling channel 3 and the second cooling channel 6. It is formed by the first baffle seat 13 and the second baffle seat 14. The water flows through the water flow gap 15, thereby increasing the distance of the water flow and the residence time of the water flow, so as to achieve more heat absorption. Then it flows through the second water flow chamber 11 and the third water flow chamber 12 and is discharged from the first drain outlet 9 and the second drain outlet 21 to achieve the cooling effect, reduce water waste, and improve the cooling effect.

[0025] A first reinforcing seat 4 is provided on the inner wall of one end of the first water flow cavity 10, and the first reinforcing seat 4 is welded and fixed to the bridge body 1. A second reinforcing seat 8 is provided on one end of the third water flow cavity 12, and the second reinforcing seat 8 is welded and fixed to the bridge body 1. Figure 1-3 The first reinforcing seat 4 and the second reinforcing seat 8 respectively support the two ends of the first water flow cavity 10 and the third water flow cavity 12, making them less prone to collapse and damage, and improving their service life. The first reinforcing seat 4 and the second reinforcing seat 8 are both made of stainless steel, which is not easily corroded and damaged, thus affecting the support effect and further improving the service life.

[0026] The heat dissipation assembly 7 includes a mounting base plate 16, on the upper surface of which heat sinks 17 are provided and welded to the mounting base plate 16. Multiple heat sinks 17 are provided. The heat dissipation assembly 7 also includes a fixing plate 18, which is installed on the front and rear surfaces at both ends of the mounting base plate 16. A fixing bolt 19 is provided at the front end of the fixing plate 18, and one end of the fixing bolt 19 passes through the fixing plate 18 and is fixed to the bridge body 1. The mounting base plate 16 is placed on the outer surface of the bridge body 1, and then one end of the fixing bolt 19 passes through the fixing plate 18 and is fixed to the bridge body 1, thereby fixing the heat dissipation assembly 7 to the bridge body 1. The detachable heat dissipation assembly 7 is easy to disassemble and replace, improving convenience and flexibility.

[0027] Working principle: When in use, the mounting base plate 16 is placed on the outer surface of the bridge body 1, and then one end of the fixing bolt 19 passes through the fixing plate 18 and is fixed to the bridge body 1, so that the heat dissipation component 7 is fixed to the bridge body 1. The detachable heat dissipation component 7 is easy to disassemble and replace, improving convenience and flexibility.

[0028] Water is supplied through the first inlet 5 and the second inlet 20. Water enters the first water flow chamber 10 of the first cooling channel 3 and the second cooling channel 6. It is formed by the first baffle seat 13 and the second baffle seat 14. The water flows through the water flow gap 15, thereby increasing the distance of the water flow and the residence time of the water flow, so as to achieve more heat absorption. Then it flows through the second water flow chamber 11 and the third water flow chamber 12 and is discharged from the first drain outlet 9 and the second drain outlet 21 to achieve the cooling effect, reduce water waste, and improve the cooling effect.

[0029] Furthermore, the heat is conducted away from the internal space of the third water flow cavity 12 through the heat sink 17, and the heat is conducted away from the water through the heat sink 17 when the water passes through the third water flow cavity 12, thereby further improving the cooling effect of the electric drive bridge.

[0030] The first reinforcing seat 4 and the second reinforcing seat 8 support the two ends of the first water flow cavity 10 and the third water flow cavity 12 respectively, making them less prone to collapse and damage, and improving their service life. Both the first reinforcing seat 4 and the second reinforcing seat 8 are made of stainless steel, which is not easily corroded and damaged, thus improving the support effect and further increasing the service life.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cooling device for an electric drive bridge, comprising a bridge body (1), characterized in that: The bridge body (1) has an installation cavity (2) inside, and the installation cavity (2) runs through the bridge body (1) from front to back. The upper end of the installation cavity (2) is provided with a first cooling channel (3), and the lower end of the installation cavity (2) is provided with a second cooling channel (6). The first cooling channel (3) and the second cooling channel (6) each include a first water flow cavity (10), a second water flow cavity (11), and a third water flow cavity (12), and the first water flow cavity (10), the second water flow cavity (11), and the third water flow cavity (12) are interconnected. The upper and lower ends of one end of the bridge body (1) are provided with heat dissipation components (7), and the heat dissipation components (7) correspond to the position of the third water flow cavity (12).

2. The cooling device for an electric drive axle according to claim 1, characterized in that: The first water flow cavity (10) is provided with a first blocking seat (13) and a second blocking seat (14), and the first blocking seat (13) and the second blocking seat (14) are installed in a staggered manner, and multiple first blocking seats (13) and second blocking seats (14) are provided.

3. The cooling device for an electric drive bridge according to claim 2, characterized in that: A water flow gap (15) is formed between one end of the first blocking seat (13) and the second blocking seat (14). A first reinforcing seat (4) is provided on the inner wall of one end of the first water flow cavity (10), and the first reinforcing seat (4) is welded and fixed to the bridge body (1). A second reinforcing seat (8) is provided at one end of the third water flow cavity (12), and the second reinforcing seat (8) is welded and fixed to the bridge body (1).

4. The cooling device for an electric drive bridge according to claim 1, characterized in that: The heat dissipation assembly (7) includes a mounting base plate (16), and a heat sink (17) is provided on the upper surface of the mounting base plate (16). The heat sink (17) is welded and fixed to the mounting base plate (16), and multiple heat sinks (17) are provided.

5. The cooling device for an electric drive bridge according to claim 4, characterized in that: The heat dissipation assembly (7) also includes a fixing plate (18), and the fixing plate (18) is installed on the front and rear surfaces of both ends of the mounting base plate (16), and the fixing plate (18) is welded and fixed to the mounting base plate (16). The front end of the fixing plate (18) is provided with a fixing bolt (19), and one end of the fixing bolt (19) passes through the fixing plate (18) and is fixed to the bridge body (1).

6. The cooling device for an electric drive bridge according to claim 1, characterized in that: The front surface of one end of the bridge body (1) is provided with a first drain outlet (9) and a second drain outlet (21), and the first drain outlet (9) and the second drain outlet (21) are respectively connected to the third water flow cavity (12) of the first cooling channel (3) and the second cooling channel (6). The upper surface of the other end of the bridge body (1) is provided with a first water inlet (5), and the lower surface of the other end of the bridge body (1) is provided with a second water inlet (20), and the first water inlet (5) and the second water inlet (20) are respectively connected to the first water flow cavity (10) of the first cooling channel (3) and the second cooling channel (6).

7. The cooling device for an electric drive bridge according to claim 3, characterized in that: Both the first reinforcing seat (4) and the second reinforcing seat (8) are made of stainless steel.

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