Low-voltage water-cooled drive motor

Abstract

The utility model relates to a low pressure water -cooling drive motor belongs to motor cooling field, including motor casing (1), be equipped with motor controller casing (2) on the motor casing (1), be equipped with water -cooling plate (3) between the motor casing (1) and motor controller casing (2). Be equipped with multiple sets of mounting hole (10) on the water -cooling plate (3). Through setting up water -cooling plate (3) between the motor casing (1) and motor controller casing (2), be equipped with multiple sets of mounting hole (10) on the water -cooling plate (3), can adapt to the market on multiple mature low pressure electric control, the better cooling of electric control is convenient to the improvement, the electric control in motor controller casing (2) need not to be refitted or new development, satisfy the requirement of different customer to the integration different electric control cooling, adopt the market on multiple mature low pressure electric control, system development cost is low, and development cycle is short.

Description

Technical Field

[0001] This utility model belongs to the field of motor cooling, specifically, it relates to a low-pressure water-cooled drive motor. Background Technology

[0002] Water-cooled drive motors used in non-road new energy machinery can dissipate heat more efficiently than air-cooled or self-cooled motors, and are better suited to continuous, high-load, and harsh working conditions. However, most of these motors on the market are high-voltage systems of 300V or higher, resulting in high overall vehicle system costs. While the high integration of the electronic control and motor has the advantage of being compact, it requires close cooperation from the electronic control supplier or independent development of the electronic control system, which is difficult to design and manufacture, has high development costs, and a long development cycle. The electronic control and motor cannot be effectively cooled during installation, which cannot meet the many demands of the non-road new energy machinery industry for low system costs, short development cycles, convenient maintenance, and wide electronic control compatibility.

[0003] A search revealed that Chinese patent CN120528176A, published on August 22, 2025, discloses a motor cooling structure, a motor, and a motor cooling control method. The cooling structure includes: cooling channels on the rotor assembly and stator assembly; an air guide ring located inside the housing and at the front end of the rotor assembly and stator assembly; an air booster structure located on the housing and at the rear end of the rotor assembly and stator assembly; and a vortex system on the housing. The cool air acts directly on the motor, effectively improving heat dissipation efficiency, but it cannot cool the motor controller. Utility Model Content

[0004] The present invention aims to provide a low-pressure water-cooled drive motor that facilitates cooling of the motor controller.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A low-pressure water-cooled drive motor includes a motor housing, a motor controller housing is provided on the motor housing, and a water-cooling plate is provided between the motor housing and the motor controller housing.

[0006] The water-cooled plate has a first cooling channel, and the motor housing has a second cooling channel, which are connected to each other.

[0007] The first cooling channel has a first water inlet at one end and a first water outlet at the other end. The second cooling channel has a second water inlet at one end, and the first water outlet and the second water inlet are connected.

[0008] The motor housing has an internal flow channel connected to a second water inlet, and the internal flow channel has a second water outlet.

[0009] The water-cooled plate is provided with multiple sets of mounting holes.

[0010] The bottom of the motor controller housing is provided with a heat-conducting aluminum plate that contacts the water-cooling plate.

[0011] A water pump is connected to the first water inlet.

[0012] The second outlet is connected to a heat dissipation water tank.

[0013] The first outlet and the second inlet are sealed by an O-ring.

[0014] The motor housing and the water-cooling plate are connected by screws, and the water-cooling plate and the motor controller housing are connected by screws.

[0015] The technical advantages of this utility model are as follows: by setting a water-cooling plate between the motor housing and the motor controller housing, the water-cooling plate is provided with multiple sets of mounting holes, which can be adapted to a variety of mature low-voltage electronic controllers on the market, and facilitate better cooling of the electronic controllers; the electronic controllers in the motor controller housing do not need to be modified or newly developed, which meets the requirements of different customers for integrating different electronic controllers for cooling. By adopting a variety of mature low-voltage electronic controllers on the market, the system development cost is low and the development cycle is short. Attached Figure Description

[0016] This manual includes the following figures, which illustrate the following:

[0017] Figure 1 This is a schematic diagram of a low-pressure water-cooled drive motor.

[0018] Figure 2 for Figure 1 A schematic diagram showing the structure after removing the motor controller housing.

[0019] Figure 3 This is a schematic diagram of the first cooling channel inside the water-cooled plate.

[0020] Figure 4 for Figure 2 Schematic diagram of the internal second cooling channel.

[0021] The markings in the diagram are as follows: 1. Motor housing; 2. Motor controller housing; 3. Water-cooled plate; 4. First cooling channel; 5. Second cooling channel; 6. First water inlet; 7. First water outlet; 8. Second water inlet; 9. Second water outlet; 10. Mounting hole. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of this utility model, and to facilitate its implementation.

[0023] like Figure 1and Figure 2 As shown, a low-voltage water-cooled drive motor includes a motor housing 1, a motor controller housing 2 mounted on the motor housing 1, and a water-cooling plate 3 positioned between the motor housing 1 and the motor controller housing 2. This low-voltage water-cooled drive motor employs a low-voltage water-cooled three-phase AC motor and can integrate mainstream mature low-voltage electronic controllers on the top or side. Cooling is achieved by installing the water-cooling plate 3 between the motor housing 1 and the motor controller housing 2. The modular design of the water-cooling plate 3 allows for compatibility with various mature low-voltage electronic controllers on the market, providing better cooling. The electronic controllers within the motor controller housing 2 require no modification or new development; they utilize various mature low-voltage electronic controllers available on the market, resulting in low system development costs and a short development cycle.

[0024] like Figure 3 and Figure 4 As shown, the water-cooled plate 3 has a first cooling channel 4 inside, and the motor housing 1 has a second cooling channel 5. The first cooling channel 4 and the second cooling channel 5 are connected. The water-cooled plate 3 has a first cooling channel 4 inside, and the motor housing 1 has a second cooling channel 5 inside. The connection between the first cooling channel 4 and the second cooling channel 5 allows for slightly heated cooling water, whose temperature still meets the requirements of the motor inlet. The cooling water enters the second cooling channel 5 inside the motor housing 1 from the first cooling channel 4 of the water-cooled plate 3. The heat from the motor stator can be transferred to the motor housing 1 by the cooling water in the second cooling channel 5, thereby cooling the motor.

[0025] The first cooling channel 4 has a first inlet 6 at one end and a first outlet 7 at the other end. The second cooling channel 5 has a second inlet 8 at one end, and the first outlet 7 and the second inlet 8 are connected. Cooling water enters the first cooling channel 4 of the water-cooled plate 3 from the first inlet 6, flows out from the first outlet 7 of the first cooling channel 4, and enters the second inlet 8 through the first outlet 7, thereby cooling the motor controller housing 2.

[0026] The motor housing 1 has an internal flow channel connected to the second water inlet 8, and a second water outlet 9 is provided on the internal flow channel. Cooling water enters the second cooling flow channel 5 from the second water inlet 8, flows out from the second water outlet 9 after passing through the internal flow channel of the motor housing 1, thereby cooling the motor housing 1.

[0027] The water-cooled plate 3 is provided with multiple sets of mounting holes 10. The mounting holes 10 are used to mount the motor controller housing 2. By providing multiple sets of mounting holes 10, the distance between the mounting holes 10 can be adjusted to meet the requirements of different customers for integrating different electronic control cooling.

[0028] The bottom of the motor controller housing 2 is provided with a heat-conducting aluminum plate that contacts the water-cooling plate 3. The heat from the motor controller housing 2 is transferred to the surface of the water-cooling plate 3 through the bottom heat-conducting aluminum plate, and then to the low-temperature cooling water in the internal flow channel of the water-cooling plate 3, thereby achieving efficient cooling of the electronic control unit.

[0029] A water pump is connected to the first water inlet 6. Cooling water enters the water-cooled plate 3 through the first water inlet 6 via the water pump.

[0030] The second outlet 8 is connected to a cooling water tank. Cooling water flows out of the second outlet 8 and enters the cooling water tank, or it can be connected to other water-cooling equipment.

[0031] The first water outlet 7 and the second water inlet 8 are sealed by an O-ring. The first water outlet 7 of the water-cooled plate 3 and the second water inlet 8 on the motor housing 1 are sealed by an O-ring, which provides a good sealing effect.

[0032] The motor housing 1 and water-cooled plate 3 are connected by screws, and the water-cooled plate 3 and motor controller housing 2 are connected by screws. This modular connection allows for easy assembly and disassembly of all three components, facilitating maintenance. If integrated electrical control is not required, water-cooled plate 3 can be omitted, and a separate water inlet can be installed at the water inlet of motor housing 1, meeting various customer adaptation needs.

[0033] The working principle of this utility model is as follows: A low-pressure water-cooled drive motor includes a motor housing 1, a motor controller housing 2 mounted on the motor housing 1, and a water-cooling plate 3 positioned between the motor housing 1 and the motor controller housing 2. The water-cooling plate 3 has a first cooling channel 4, and the motor housing 1 has a second cooling channel 5, which are connected. Cooling water enters the first cooling channel 4 of the water-cooling plate 3 through a first inlet 6 and flows out through a first outlet 7. The cooling water then enters a second inlet 8 through the first outlet 7. Heat from the motor controller housing 2 is transferred to the surface of the water-cooling plate 3 via a bottom heat-conducting aluminum plate, and then to the low-temperature cooling water within the water-cooling plate 3, thus achieving efficient cooling of the motor controller. Cooling water enters the second cooling channel 5 through the second inlet 8, passes through the internal channels of the motor housing 1, and flows out through a second outlet 9, thus cooling the motor.

[0034] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A low-pressure water-cooled drive motor, characterized in that: It includes a motor housing (1), a motor controller housing (2) is provided on the motor housing (1), and a water-cooled plate (3) is provided between the motor housing (1) and the motor controller housing (2).

2. The low-pressure water-cooled drive motor according to claim 1, characterized in that: The water-cooled plate (3) is provided with a first cooling channel (4), and the motor housing (1) is provided with a second cooling channel (5). The first cooling channel (4) and the second cooling channel (5) are connected.

3. A low-pressure water-cooled drive motor according to claim 2, characterized in that: The first cooling channel (4) has a first water inlet (6) at one end and a first water outlet (7) at the other end. The second cooling channel (5) has a second water inlet (8) at one end. The first water outlet (7) and the second water inlet (8) are connected.

4. A low-pressure water-cooled drive motor according to claim 3, characterized in that: The motor housing (1) is provided with an internal flow channel connected to a second water inlet (8), and a second water outlet (9) is provided on the internal flow channel.

5. A low-pressure water-cooled drive motor according to claim 4, characterized in that: The water-cooled plate (3) is provided with multiple sets of mounting holes (10).

6. A low-pressure water-cooled drive motor according to claim 5, characterized in that: The bottom of the motor controller housing (2) is provided with a heat-conducting aluminum plate that contacts the water-cooling plate (3).

7. A low-pressure water-cooled drive motor according to claim 6, characterized in that: The first water inlet (6) is connected to a water pump.

8. A low-pressure water-cooled drive motor according to claim 7, characterized in that: The second outlet (9) is connected to a heat dissipation water tank.

9. A low-pressure water-cooled drive motor according to any one of claims 3-8, characterized in that: The first outlet (7) and the second inlet (8) are sealed by an O-ring.

10. A low-pressure water-cooled drive motor according to any one of claims 1-8, characterized in that: The motor housing (1) and the water-cooled plate (3) are connected by screws, and the water-cooled plate (3) and the motor controller housing (2) are connected by screws.

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