Motor water jacket for oil-electric hybrid vehicle

Abstract

The utility model discloses a motor water jacket for an oil-electric hybrid vehicle, which comprises a water jacket shell, and a mounting cavity is formed in the water jacket shell; a first cooling water pipe is fixed to the surface of a mounting cavity in the water jacket shell, the first cooling water pipe is of an annular latticed structure, one end of the first cooling water pipe communicates with a reducer pipe, the top of the first cooling water pipe communicates with a first water outlet pipe, and the inner wall of the water jacket shell is coated with a heat conduction coating; a second cooling water pipe is fixed to the inner wall of the water jacket shell and is of a spiral structure, the bottom of the second cooling water pipe communicates with a water inlet pipe, the top of the second cooling water pipe communicates with a second water outlet pipe, and the first water outlet pipe and the second water outlet pipe both penetrate through the water jacket shell. The motor has the advantages of having double cooling water channels, being capable of achieving graded cooling of a heat source and improving the cooling efficiency of the motor, and solving the problems that an existing motor water channel is poor in cooling effect and a water flow channel is simple in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of motor water jackets, in particular to a motor water jacket for an oil-electric hybrid vehicle. Background Art

[0002] Motor water jacket, also known as motor water cooling jacket or motor cooling jacket, refers to a device used to cool electric motors, especially in hybrid vehicles or pure electric vehicles. The basic principle is to build a set of closed water flow channels in a specific area inside or around the motor. The coolant circulates in this channel, absorbs the heat generated by the motor through heat exchange, and then transfers it to the cooling system in the car, and finally dissipates the heat to the outside air through the radiator.

[0003] The existing motor water jacket is cooled only by its own material and a single water flow channel. Due to the simple structure of the water channel, the contact area between the coolant and the heating element is insufficient, which results in poor cooling effect on the motor and needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a motor water jacket for a hybrid vehicle, which has a dual cooling water channel, can achieve graded cooling of the heat source, increase the cooling efficiency of the motor, and solve the problems of poor cooling effect of the current motor water channel and simple water flow channel structure.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a motor water jacket for a hybrid vehicle, comprising a water jacket shell, wherein a mounting cavity is provided inside the water jacket shell;

[0006] A first cooling water pipe is fixed on the surface of the internal mounting cavity of the water jacket shell, the first cooling water pipe is arranged in an annular grid structure, one end of the first cooling water pipe is connected with a reducer, the top of the first cooling water pipe is connected with a first water outlet pipe, the inner wall of the water jacket shell is coated with a thermal conductive coating, a second cooling water pipe is fixed on the inner wall of the water jacket shell, the second cooling water pipe is arranged in a spiral structure, the bottom of the second cooling water pipe is connected with a water inlet pipe, the top of the second cooling water pipe is connected with a second water outlet pipe, the first water outlet pipe and the second water outlet pipe both penetrate the water jacket shell, heat dissipation fins are fixed on the surface of the second cooling water pipe, and a plurality of dispersion grooves are provided on the surface of the water jacket shell.

[0007] As a preferred embodiment of the motor water jacket for a hybrid vehicle of the utility model, the surfaces of the second cooling water pipe and the heat dissipation fins are coated with thermal conductive silicone grease.

[0008] As a preferred embodiment of a motor water jacket for a hybrid vehicle of the utility model, the water jacket shell, the first cooling water pipe and the second cooling water pipe are all made of copper alloy.

[0009] As a preferred embodiment of a motor water jacket for a hybrid vehicle of the utility model, the inner walls of the first cooling water pipe and the second cooling water pipe are both chrome-plated.

[0010] As a preferred embodiment of a motor water jacket for a hybrid vehicle of the utility model, a reinforcing frame is fixed to the surface of the water jacket shell, and the reinforcing frame is arranged in an annular grid structure.

[0011] As a preferred embodiment of the motor water jacket for a hybrid vehicle of the utility model, the reinforcing frame is made of aluminum alloy, and the surface gaps of the reinforcing frame are connected to the dispersion grooves.

[0012] As a preferred embodiment of the motor water jacket for a hybrid vehicle of the utility model, the heat dissipation fins are made of aluminum.

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

[0014] The utility model uses the design of the first cooling water pipe and the second cooling water pipe, and the internal and external dual cooling water channels can realize graded cooling of the heat source. The internal water channel close to the heat source can first absorb a large amount of heat, and then further dissipate the heat through the external water channel. Even if one water channel fails, the other water channel can continue to cool, providing a certain system redundancy and improving the reliability and fault tolerance of the cooling system. At the same time, the dispersion groove helps to release the stress generated by the shell when it is subjected to the internal and external pressure difference, improves the structural stability of the water jacket, and reduces the risk of deformation caused by thermal expansion and contraction. It can also assist in heat dissipation through natural convection and radiation to improve the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of another viewing angle of the utility model;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0018] In the figure: 1. water jacket shell; 2. first cooling water pipe; 3. reducer; 4. first water outlet pipe; 5. second cooling water pipe; 6. water inlet pipe; 7. second water outlet pipe; 8. heat dissipation fins; 9. dispersion tank; 10. reinforcement frame. DETAILED DESCRIPTION

[0019] See also Figure 1-3 , a motor water jacket for a hybrid vehicle, comprising a water jacket shell 1, wherein an installation cavity is provided inside the water jacket shell 1;

[0020] The interior of the installation cavity is used to install the cooling component.

[0021] A first cooling water pipe 2 is fixed to the surface of the internal mounting cavity of the water jacket shell 1. The first cooling water pipe 2 is arranged in an annular grid structure. One end of the first cooling water pipe 2 is connected with a reducer 3. The top of the first cooling water pipe 2 is connected with a first water outlet pipe 4. The inner wall of the water jacket shell 1 is coated with a thermal conductive coating. A second cooling water pipe 5 is fixed to the inner wall of the water jacket shell 1. The second cooling water pipe 5 is arranged in a spiral structure. The bottom of the second cooling water pipe 5 is connected with a water inlet pipe 6. The top of the second cooling water pipe 5 is connected with a second water outlet pipe 7. The first water outlet pipe 4 and the second water outlet pipe 7 both penetrate the water jacket shell 1. A heat dissipation fin 8 is fixed on the surface of the second cooling water pipe 5. A plurality of dispersion grooves 9 are provided on the surface of the water jacket shell 1.

[0022] After the motor is installed, the surface of the motor will contact the second cooling water pipe 5 and the surface of the heat dissipation fins 8. When the motor generates heat, its own heat will be absorbed by the second cooling water pipe 5 and the heat dissipation fins 8. Cooling water can be added to the second cooling water pipe 5 through the water inlet pipe 6, and the spiral second cooling water pipe 5 is conducive to increasing the contact time between the coolant and the motor surface through the second cooling water pipe 5, thereby improving the heat exchange efficiency. At the same time, the heat dissipation fins 8 can increase the contact area, reduce the thermal resistance between the heat source and the cooling medium, and improve the convective heat transfer effect. When the external coolant enters the first cooling water pipe 2 through the reducer 3, the fluid velocity is forced to increase due to the sudden decrease in the cross-sectional area of ​​the channel, and a large flow rate easily forms turbulence near the reducer. This structure is conducive to increasing the local flow rate, thereby improving the convective heat transfer efficiency. Afterwards, the coolant inside the first cooling water pipe 2 will absorb the temperature of the water jacket shell 1, so that the water jacket shell 1 can cool the second cooling water pipe 5. At the same time, the thermal conductive coating can also accelerate the heat absorption effect. rate, and the grid design of the first cooling water pipe 2 can increase the heat exchange area, and also cause the fluid to collide and mix at the intersection, thereby further forming turbulence. Due to the presence of a large number of vortices in the turbulence, these microstructures promote the rapid diffusion and transfer of heat in the fluid, thereby improving the heat exchange efficiency. The setting of the dispersion groove 9 helps to release the stress generated by the shell when it is subjected to the internal and external pressure difference, improve the structural stability of the water jacket, and reduce the risk of deformation caused by thermal expansion and contraction. It can also assist heat dissipation through natural convection and radiation to improve the heat dissipation effect. Through the design of the first cooling water pipe 2 and the second cooling water pipe 5, the internal and external dual cooling water channels can realize graded cooling of the heat source. The internal water channel close to the heating element can first absorb a large amount of heat, and then further dissipate heat through the external water channel. Even if one water channel fails, the other water channel can continue to cool, providing a certain system redundancy and improving the reliability and fault tolerance of the cooling system.

[0023] Furthermore, the surfaces of the second cooling water pipe 5 and the heat dissipation fins 8 are coated with thermal conductive silicone grease;

[0024] The thermal conductive silicone grease can reduce the interface thermal resistance and enhance the heat conduction efficiency between the motor and the second cooling water pipe 5 and the heat dissipation fins 8 .

[0025] Furthermore, the water jacket shell 1, the first cooling water pipe 2 and the second cooling water pipe 5 are all made of copper alloy;

[0026] Copper alloys have extremely high thermal conductivity, which means that heat can be transferred quickly from the motor to the coolant, thereby improving cooling efficiency.

[0027] Furthermore, the inner walls of the first cooling water pipe 2 and the second cooling water pipe 5 are both chrome-plated;

[0028] Chrome plating can reduce heat transfer resistance, improve heat transfer coefficient and increase the wear resistance and corrosion resistance of the inner wall of the pipe.

[0029] Furthermore, a reinforcement frame 10 is fixed on the surface of the water jacket shell 1, and the reinforcement frame 10 is arranged in a ring-shaped grid structure;

[0030] The reinforcement frame 10 can improve the mechanical strength and pressure resistance of the water jacket shell 1, and prevent the water jacket shell 1 from being deformed or broken when subjected to changes in internal and external pressures.

[0031] Furthermore, the reinforcing frame 10 is made of aluminum alloy, and the surface gaps of the reinforcing frame 10 are connected to the dispersion grooves 9;

[0032] The aluminum alloy reinforcement frame 10 can maintain a relatively light weight while strengthening the structure, which is beneficial to lightweight design in the automotive and other fields, and ensures that the surface of the reinforcement frame 10 will not block the dispersion groove 9.

[0033] Furthermore, the heat dissipation fins 8 are made of aluminum;

[0034] Aluminum has a high thermal conductivity and is light in weight, and is therefore more suitable for the water jacket shell (1).

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A motor water jacket for a hybrid vehicle, comprising a water jacket shell (1), characterized in that: The water jacket shell (1) has an installation cavity formed inside; A first cooling water pipe (2) is fixed on the surface of the internal mounting cavity of the water jacket shell (1); the first cooling water pipe (2) is arranged in an annular grid structure; one end of the first cooling water pipe (2) is connected to a reducer (3); the top of the first cooling water pipe (2) is connected to a first water outlet pipe (4); the inner wall of the water jacket shell (1) is coated with a thermal conductive coating; a second cooling water pipe (5) is fixed on the inner wall of the water jacket shell (1); the second cooling water pipe (5) is arranged in a spiral structure; the bottom of the second cooling water pipe (5) is connected to a water inlet pipe (6); the top of the second cooling water pipe (5) is connected to a second water outlet pipe (7); the first water outlet pipe (4) and the second water outlet pipe (7) both penetrate the water jacket shell (1); a heat dissipation fin (8) is fixed on the surface of the second cooling water pipe (5); and a plurality of dispersion grooves (9) are provided on the surface of the water jacket shell (1).

2. The motor water jacket for a hybrid vehicle according to claim 1, characterized in that: The surfaces of the second cooling water pipe (5) and the heat dissipation fins (8) are both coated with thermal conductive silicone grease.

3. The motor water jacket for a hybrid vehicle according to claim 1, characterized in that: The water jacket shell (1), the first cooling water pipe (2) and the second cooling water pipe (5) are all made of copper alloy.

4. The motor water jacket for a hybrid vehicle according to claim 1, characterized in that: The inner walls of the first cooling water pipe (2) and the second cooling water pipe (5) are both chrome-plated.

5. The motor water jacket for a hybrid vehicle according to claim 1, characterized in that: A reinforcement frame (10) is fixed on the surface of the water jacket shell (1), and the reinforcement frame (10) is arranged in an annular grid structure.

6. The motor water jacket for a hybrid vehicle according to claim 5, characterized in that: The reinforcing frame (10) is made of aluminum alloy, and the surface gaps of the reinforcing frame (10) are connected to the dispersion grooves (9).

7. The motor water jacket for a hybrid vehicle according to claim 1, characterized in that: The heat dissipation fins (8) are made of aluminum.

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