A cooling water cover of electromotive motorcar and its cooling method

Abstract

The invention discloses a cooling water jacket of electromobile motor, it includes two components which matches with each other, circle inner water jacket and ring outer water jacket which is out of inner water jacket, outer surface of the inner water jacket possesses beard, the beard is cannelure which winds along outer circle of the inner water jacket, the circulating course is tortuous, the beard includes beard sidewall and beard bottom, the sidewall is contacted with inner surface of the outer water jacket to form channel of cooling water. The contact area of cooling water with water jacket in water-way is big, effect of cooling is well, and structure is compact, assemblage is convenient, especially fits for vehicle; sealing property is good, without leakage of cooling water; structure of water-way easy, processing is convenient; flow of cooling water is smooth, drag force is little, power consumption of cooling is little.

Description

technical field [0001] The invention belongs to the technical field of automobile construction, and relates to a motor cooling system of an electric vehicle, especially a hybrid electric vehicle. More specifically, the invention relates to a cooling water jacket of a motor of an electric vehicle. The present invention also relates to the cooling method adopted by the cooling water jacket of the electric vehicle motor. Background technique [0002] When the motors of electric vehicles, especially hybrid electric vehicles, work under heavy load and complex working conditions, a large amount of heat will be generated. If the heat is not discharged in time, it will affect the performance of the motor. If the motor is located in the front compartment of the car, the temperature of the motor will also rise due to the high ambient temperature of the front compartment (generally exceeding 100°C). For some hybrid vehicles where the motor is integrated between the engine and the gea...

AI Technical Summary

Problems solved by technology

[0003] The motors of current electric vehicles, especially hybrid electric vehicles, are limited by structural conditions. Most of them are cooled by natural ventilation or forced ventilation. Water cooling is rarely used, and the cooling effect is not ideal.

[0004] The patent literature with the Chinese patent number CN03205425.4 discloses a permanent magnet synchronous motor, which involves the water cooling technology of the motor, but the part about the cooling water jacket in this patent literature is too simple and vague, and the structure is unreasonable

[0005] 1. The water inlet and outlet are located at the bottom, so it is difficult to discharge gas

[0006] 2. The water channel structure is not clearly given

This kind of cooling water jacket, which has no sand hole and is not assembled by two parts, is obviously difficult to manufacture.

[0007] 3. From the technical solutions, embodiments and drawings provided in this patent document, it is unclear whether and how the water inlet and outlet are separated. The structure here is not clearly expressed, and it is easy to understand that the water inlet and outlet are In the same way, the cooling water is discharged from the outlet immediately after entering the water inlet, and the sealing structure of the water inlet and outlet is not clear

[0008] Apparently, the technical solution of the patent on the motor cooling water jacket part does not solve the existing problems well, and its inventive concept is unclear, imperfect and unreasonable, which makes it difficult for those skilled in the art to understand and even more impossible to realize.

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