Intra-cavity water-cooled motor

Abstract

The invention relates to the technical field of hub motors, and discloses an in-cavity water-cooled motor which comprises a motor body, the motor body is composed of a shell, a stator and a rotor, the stator is composed of a silicon steel sheet stator and a stator support, a cavity is formed in the stator support, a water cooling device used for cooling is arranged in the shell, and the water cooling device is arranged in the shell. The water cooling device comprises a cooling liquid box, the cooling liquid box is fixed on the inner wall of the shell, a conveying part is arranged on the side, close to the stator support, of the cooling liquid box, the cooling liquid box communicates with a conveying pipeline, the conveying pipeline communicates with a cavity in the stator support through the conveying part, a sliding groove is formed in the surface of the cooling liquid box, and the sliding groove is communicated with the cooling liquid box. According to the in-cavity water-cooled motor, the cavity is formed in the stator bracket, and the cooling liquid is directly input through the water cooling device to cool the motor in the cavity, so that the cooling effect is improved, raw materials do not need to be added, and the production cost is prevented from being increased.

Description

Technical Field

[0001] The invention relates to the technical field of wheel hub motors, and in particular to an intra-cavity water-cooled motor. Background Art

[0002] The hub motor is a motor designed to integrate the vehicle's power system, transmission system, and braking system.

[0003] When the user is loading or climbing, the motor temperature overheats, resulting in: ① low motor efficiency; ② heat accelerates performance aging; ③ motor material damage; ④ motor wire package burns out and the motor is scrapped. Regarding the use of hub motor electric motorcycles, although there is no limit on motor power, the heavier the weight of the hub motor, the heavier the unsprung mass of the entire electric vehicle, which will seriously affect the riding comfort and the service life of the brake pads and tires. The effective way to increase the power of the motor (a popular practice in the market) is to increase the raw materials (increase the iron core stacking, increase the cross-sectional area of ​​the copper wire, and increase the amount of rare earth), which will increase the overall cost. For this reason, we propose an intracavity water-cooled motor. Summary of the invention

[0004] The object of the present invention is to provide an intracavity water-cooled motor to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an intracavity water-cooled motor, comprising a motor, wherein the motor is composed of a shell, a stator and a rotor, the stator is composed of a silicon steel sheet stator and a stator bracket, a cavity is opened inside the stator bracket, and a water cooling device for cooling is arranged inside the shell.

[0006] Preferably, the water cooling device comprises:

[0007] A coolant tank is fixed on the inner wall of the shell, a conveying portion is provided on the surface of the shell, a conveying pipe is connected to the coolant tank, and the conveying pipe is connected to the cavity inside the stator bracket through the conveying portion. A conveying pump can extract the coolant inside the coolant tank through the conveying pipe and convey it to the inside of the stator bracket cavity, and then return it to the coolant tank through the conveying pipe to achieve water cooling.

[0008] Preferably, a slide groove is provided on the surface of the coolant tank.

[0009] Preferably, the stator bracket is penetrated by and fixed to the air pipe, and the air pipe is led to the outside of the motor through the motor lead to discharge the pressure generated in the stator bracket cavity after heating, and at the same time, the heat source after heating can also be discharged.

[0010] Preferably, the delivery part is a delivery pump.

[0011] Preferably, a groove is provided at a position where the coolant tank is connected to the delivery pipeline.

[0012] Preferably, one end of the delivery pipeline is fixed to the coolant tank, and the other end of the delivery pipeline is fixed to the stator bracket.

[0013] Compared with the prior art, the present invention provides an intracavity water-cooled motor, which has the following beneficial effects:

[0014] 1. The cavity-water-cooled motor opens a cavity in the stator bracket and directly inputs coolant through a water cooling device to dissipate heat in the cavity for the motor, thereby improving the heat dissipation effect without increasing raw materials and avoiding increasing production costs.

[0015] 2. The air delivery pipe of the water-cooled motor in the cavity is led to the outside of the motor through the motor lead wire to discharge the pressure generated in the stator bracket cavity after heating, and at the same time, the heat source after heating can be discharged. The delivery part is a delivery pump. A groove is provided at the position where the coolant tank is connected to the delivery pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the cross-sectional side view structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the front view structure of the coolant tank of the present invention;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the motor housing of the present invention.

[0020] In the figure: 11, silicon steel sheet stator; 12, stator bracket; 2, water cooling device; 21, coolant tank; 22, delivery pump; 23, delivery pipeline; 5, air delivery pipe. DETAILED DESCRIPTION

[0021] like Figure 1-4 As shown, the present invention provides a technical solution: an intracavity water-cooled motor, comprising a motor, wherein the motor is composed of a housing, a stator and a rotor, the stator is composed of a silicon steel sheet stator 11 and a stator bracket 12, a cavity is opened inside the stator bracket 12, and a water cooling device 2 for cooling is arranged inside the housing.

[0022] The water cooling device 2 includes a coolant tank 21, which is fixed on the inner wall of the shell. A conveying portion is provided on the surface of the shell. A conveying pipe 23 is connected to the coolant tank 21. The conveying pipe 23 is connected to the cavity inside the stator bracket 12 through the conveying portion. The conveying pump 22 can extract the coolant inside the coolant tank 21 through the conveying pipe 23 and convey it to the inside of the cavity of the stator bracket 12, and then return it to the coolant tank 21 through the conveying pipe 23 to achieve water cooling heat dissipation.

[0023] A slide groove is formed on the surface of the coolant tank 21 .

[0024] The stator bracket 12 is penetrated by the gas pipe 5 and fixed to the gas pipe 5. The gas pipe 5 is led to the outside of the motor through the motor lead to discharge the pressure generated by the heat in the cavity of the stator bracket 12, and at the same time, the heat source after the heat is discharged. The delivery part is a delivery pump 22. A groove is provided at the position where the coolant tank 21 is connected to the delivery pipe 23.

[0025] One end of the delivery pipe 23 is fixed to the coolant tank 21 , and the other end of the delivery pipe 23 is fixed to the stator bracket 12 .

[0026] When the motor starts working, the delivery pump 22 can extract coolant from the coolant tank 21 through the delivery pipe 23, thereby accelerating the cooling efficiency and avoiding the motor speed being too fast and causing overheating. The air delivery pipe 5 is led to the outside of the motor through the motor lead to discharge the pressure generated in the cavity of the stator bracket 12 after being heated, and at the same time, the heat source after being heated can also be discharged. The delivery part is the delivery pump 22. A groove is provided at the position where the coolant tank 21 is connected to the delivery pipe 23, and it can be connected to the delivery pump 22 through an external water tank, and circulated through the delivery pump 22, the external water tank and the internal coolant tank 21, thereby achieving the effect of circulating cooling.

[0027] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An intracavity water-cooled motor, comprising a motor, the motor comprising a housing, a stator and a rotor, the stator comprising a silicon steel sheet stator (11) and a stator bracket (12), characterized in that: A cavity is provided inside the stator support (12), and a water cooling device (2) for cooling is provided inside the shell.

2. The water-cooled motor in the cavity according to claim 1, characterized in that: The water cooling device (2) comprises: A coolant tank (21), the coolant tank (21) is fixed on the inner wall of the shell, a conveying portion is provided on the surface of the shell, a conveying pipe (23) is connected to the coolant tank (21), and the conveying pipe (23) is connected to the cavity inside the stator bracket (12) through the conveying portion.

3. The water-cooled motor in the cavity according to claim 2, characterized in that: A sliding groove is provided on the surface of the cooling liquid tank (21).

4. The intracavity water-cooled motor according to claim 1, characterized in that: The stator bracket (12) is penetrated by the gas pipe (5) and is fixed to the gas pipe (5).

5. The intracavity water-cooled motor according to claim 2, characterized in that: The delivery part is a delivery pump (22).

6. The intracavity water-cooled motor according to claim 2, characterized in that: A groove is provided at a position where the coolant tank (21) communicates with the delivery pipeline (23).

7. The intracavity water-cooled motor according to claim 2, characterized in that: One end of the delivery pipeline (23) is fixed to the coolant tank (21), and the other end of the delivery pipeline (23) is fixed to the stator bracket (12).

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