Method for casting water cooling motor shell

Abstract

The invention relates to a method for casting a water cooling motor shell. Cast aluminum alloy is adopted by a motor shell body, and the water cooling motor shell comprises the machine shell body and a base, a strip-shaped spirally-arranged water channel formed integrally with the motor shell body is arranged on the motor shell body, and the strip-shaped spirally-arranged water channel and the motor shell body are integrally cast and formed. According to the method, the special casting and sand shakeout process is adopted, sand cores in the water channel are completely discharged, residual sand does not exist in the water channel, and the heat dissipation efficiency of the motor shell body is improved. The method is simple in process and low in cost, the motor shell body which is cast and formed through the method is provided, a water inlet and a water outlet are formed in the tail end of the spiral water channel, and the sectional area of the water channel is larger than the sectional area of the water inlet. According to the water channel of the motor shell body, a traditional spiral water channel is improved and designed, the number of corners of the water channel is increased, the corner size is reasonably designed, and therefore the water channel is made to more conform to the production needs.

Description

technical field [0001] The invention relates to the field of motor manufacturing, in particular to a manufacturing method and structure of a water-cooled motor casing. Background technique [0002] With the promotion and application of new energy vehicles, electric vehicles and gasoline-electric hybrid vehicles have been fully developed and utilized. The same thing between the two lies in the inevitable use of drive motors to maintain vehicle driving power. Drive motors generally need to have higher power, especially for larger commercial vehicles, such as buses and passenger cars. However, due to the thermal effect of current and the loss of mechanical energy during the operation of the motor, the heat generated by the motor is large, which limits the improvement of the efficiency of the motor. Due to the high requirements on the protection level, it is difficult to directly export the heat generated inside the motor, so the water cooling method of the casing is generally ...

AI Technical Summary

Problems solved by technology

Most of the existing aluminum alloy casings are aluminum profiles and the water channels are formed by welding. This process can only form the water channels arranged in an S-shape along the motor axis, and the welding cost is high, and the welding quality is not easy to control

Due to the large water resistance of the elbow in the S-shaped waterway, the demand for pump power and head is high, which will also make the entire waterway circulation pipeline bear more pressure, and the safety factor is low.

The casting of the spiral waterway of the aluminum alloy casing has always been a problem that the industry seeks to solve. Due to the complicated structure of the spiral waterway, the ordinary shakeout process cannot remove the sand core in the waterway, and blocking the waterway will affect the heat dissipation effect.

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