CN201194353Y - A water-cooled housing for an electric vehicle motor - Google Patents

Abstract

The utility model discloses a water-cooled shell of an electric vehicle motor, which comprises a stator, a cable joint, a stator cable, a stator retaining ring and a water-cooled shell, and is characterized in that: the water-cooled shell is composed of an inner water jacket and an outer water jacket, and The sleeve is connected in the outer water jacket, the outer surface of the inner water jacket is close to the outer surface of the stator, the outer water jacket is connected with the stator retaining ring, one end of the stator cable is connected with the stator, and the other end of the stator cable is connected with the cable joint installed on the water-cooled shell , the water-cooled shell is respectively provided with a water inlet pipe and an outlet pipe which communicate with the cavity formed by the inner water jacket and the outer water jacket through the sealing ring. The above-mentioned structure has the following advantages: 1. The water-cooled shell has a compact structure and is easy to install, especially suitable for use on cars with small spaces; 2. It is tightly sealed to reduce the risk of leakage; 3. The structure of the water channel is simple, the water flow is smooth, and the resistance is small. heat radiation.

Description

A water-cooled housing for an electric vehicle motor

technical field

The utility model relates to the technology of a hybrid electric vehicle, in particular to a water-cooled shell of an electric vehicle motor.

Background technique

The motors of electric vehicles, especially hybrid electric vehicles, will generate a lot of heat under complex working conditions. For some hybrid vehicles where the motor is integrated between the engine and the gearbox, the temperature in the clutch housing of the gearbox is higher, and the local area In some cases it may reach around 300°C. The high temperature of the engine and gearbox will undoubtedly be transmitted to the motor, causing the temperature of the motor to rise further, posing a serious threat to the performance and efficiency of the motor. Current electric vehicles, especially hybrid electric vehicles, mostly adopt natural ventilation cooling or forced ventilation cooling, and the cooling effect is limited.

Utility model content

The utility model provides a water-cooled shell of an electric vehicle motor to achieve the purpose of effectively removing the heat of the motor, thereby improving the efficiency of the motor, and further exerting the energy-saving advantages of the electric vehicle.

A water-cooled housing for an electric vehicle motor, including a stator, a cable joint, a stator cable, a stator retaining ring and a water-cooled housing, characterized in that: the water-cooled housing is composed of an inner water jacket and an outer water jacket, and the inner water jacket is sleeved on the outer water jacket Among them, the outer surface of the inner water jacket is close to the outer surface of the stator, the outer water jacket is connected to the stator retaining ring, one end of the stator cable is connected to the stator, and the other end of the stator cable is connected to the cable joint installed on the water-cooled shell. The water-cooled The shell is provided with a water inlet pipe and a water outlet pipe communicating with the cavity formed by the inner water jacket and the outer water jacket through the sealing ring.

A water-cooled housing for an electric vehicle motor is characterized in that the inner water jacket and the outer water jacket are circular structures with a hollow center.

A water-cooled housing for an electric vehicle motor, characterized in that: the step surface of the outer water jacket is provided with a positioning pin hole, and the pin is connected with the inner water jacket and the outer water jacket through the positioning pin hole.

A water-cooled shell of an electric vehicle motor is characterized in that: the outer surface of the inner water jacket is provided with grooves for heat dissipation.

A water-cooled housing for an electric vehicle motor, characterized in that: the position of the water inlet pipe is below the direction of the center line of the outer water jacket, and the position of the water outlet pipe is above the direction of the center line of the outer water jacket.

A water-cooled casing for an electric vehicle motor, characterized in that the widths of the inner water jacket and the outer water jacket can be the same or different.

A water-cooled housing for an electric vehicle motor has the following advantages due to the adoption of the above structure:

1. The water-cooled shell has a compact structure and is easy to install, especially suitable for use on cars with small spaces; 2. It is tightly sealed to reduce the risk of leakage; 3. The water channel structure is simple, the water flow is smooth, and the heat dissipation effect is improved under resistance.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:

Fig. 1 is the left schematic diagram of the outer contour of the utility model;

Fig. 2 is the right schematic diagram of the outer contour of the utility model;

Fig. 3A, B are the schematic diagrams of the inner water jacket of the present utility model;

Fig. 4A, B are the schematic diagrams of the internal structure of the water jacket of the present invention;

In Fig. 1-Fig. 4, 1. Outer water jacket, 2. Inner water jacket, 3. Cable joint, 4. Bolt hole, 5. Locating pin hole, 6. Outlet pipe, 7. Stator, 8. Stator retaining ring , 9, water inlet pipe, 11, pin, 12, 13, sealing ring, 14, cavity, 15, groove, 16, stator cable, 17 water outlet position, 18 water inlet position.

Detailed ways:

As shown in Figures 1-4: a water-cooled housing for an electric vehicle motor; the water-cooled housing consists of an inner water jacket 2, an outer water jacket 1, a water inlet pipe 9, a water outlet pipe 6, a stator 7, a cable joint 3, a stator cable 16, and a stator The retaining ring 8 is composed of the inner water jacket 2 and the outer water jacket 1. Both the inner water jacket 2 and the outer water jacket 1 have a hollow circular ring structure in the middle. The cavity 14 is the flow channel of the coolant, and the outer surface of the inner water jacket 2 has a groove 15, forming a water channel in the cavity, and the groove 15 plays the role of a heat sink, increasing the contact area with the coolant can take away more Much heat. The inner water jacket 2 and the outer water jacket 1 have the same width, the positioning pin hole 5 is located on the step surface of the outer water jacket 1, the pin 11 connects the inner water jacket 2 and the outer water jacket 1 through the positioning pin hole 5, and the inner water jacket 2 and the outer water jacket 1 A sealing ring 13 is arranged between the outer water jackets 1 to realize effective sealing and prevent leakage of cooling fluid. The water inlet pipe 9 and the water outlet pipe 6 are connected with the outer water jacket 1 through threads, and connected with the cavity 14 formed by the inner water jacket 2 and the outer water jacket 1. The water inlet pipe 9 is located below the center line of the outer water jacket 1. , the outlet pipe 6 is above the center line of the outer water jacket 1, and the cooling liquid enters from the bottom, which is beneficial to discharge the gas in the cavity. One end of the three stator cables 16 is connected to the stator 7 and the other end is connected to the cable joint 3 installed on the water-cooled casing. The outer water jacket 1 and the stator retaining ring 8 are threadedly connected to limit the axial movement of the inner water jacket 2 and the stator 7 . The inner surface of the inner water jacket 2 is close to the stator 7. When the motor is working, the heat of the stator 7 is transferred to the inner water jacket 2, and then to the coolant in the cavity 14, and the heat of the motor is taken away by the circulation of the coolant.

There is a circle of bolt holes 4 on the surface end face of the outer water jacket 1, which is used to install the motor. The installation position of the motor is determined according to the actual situation. It can be located between the engine and the gearbox, and the engine, the motor and the gearbox are fixed together with bolts.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned method, as long as various improvements of the method concept and technical solutions of the utility model are adopted, or the utility model can be directly implemented without improvement. Those applied to other occasions are all within the protection scope of the present utility model.

Claims (6)

1. motor in electric automobile water cooled housing, comprise stator (7), cable joint (3), stator cable (16), stator back-up ring (8) and water cooled housing, it is characterized in that: described water cooled housing is made up of inner water sleeve (2) and outer water jacket (1), inner water sleeve (2) is socketed in the outer water jacket (1), inner water sleeve (2) outer surface is close to stator (7) outer surface, outer water jacket (2) is connected with stator back-up ring (8), one end of stator cable (16) is connected with stator (8), the other end of stator cable (16) is connected with cable joint (3) on being installed in water cooled housing, and water cooled housing is provided with water inlet pipe (9) and the outlet pipe (6) that the cavity (14) that is encircled into by sealing ring with inner water sleeve and outer water jacket communicates.

2. a kind of motor in electric automobile water cooled housing according to claim 1 is characterized in that: inner water sleeve (2) and outer water jacket (1) are the cirque structure of intermediate hollow.

3. a kind of motor in electric automobile water cooled housing according to claim 1 is characterized in that: the step surface of outer water jacket (1) is provided with dowel hole (5), and pin (11) is connected with outer water jacket (1) with inner water sleeve (2) by dowel hole (5).

4. a kind of motor in electric automobile water cooled housing according to claim 1 is characterized in that: inner water sleeve (2) outer surface is provided with the groove of thermolysis.

5. a kind of motor in electric automobile water cooled housing according to claim 1 is characterized in that: the below of water inlet pipe (9) position and outer water jacket (1) centerline direction, the top of outlet pipe (6) and outer water jacket (1) centerline direction.

6. a kind of motor in electric automobile water cooled housing according to claim 1 is characterized in that: the width of inner water sleeve (2) and outer water jacket (1) can be the same or different.

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