Cast aluminum alloy motor casing with built-in stainless steel spiral coiled pipe water channel

Abstract

The invention discloses a cast aluminum alloy motor casing with a built-in stainless steel spiral coiled pipe water channel, which comprises a motor shell cast by aluminum alloy, and is characterized in that a stainless steel spiral coiled pipe water channel connected with a water cooling circulation system is inlaid and cast in the motor shell, and one end of the stainless steel spiral coiled pipe water channel is connected with a technological support framework. According to the invention, the operation of molding the prefabricated stainless steel spiral coiled pipe water channel in an EPS white die of the motor casing does not need to be divided into multiple times of molding, and the internal part of the stainless steel spiral coiled pipe water channel is not required to be filled with sand before casting neither, so that the production takt is greatly shortened, and the production efficiency is effectively improved. The cast aluminum alloy motor casing with the built-in stainless steel spiral coiled pipe water channel is ensured to be high in strength and stable and reliable in structure through arranging the technological support framework in the motor shell and arranging a water inlet and water outlet structure and an auxiliary structure on the stainless steel spiral coiled pipe water channel and not easy to deform or crack, thereby being capable of improving the casting precision of the motor casing, reducing casting defects of the motor casing and reducing the production cost.

Description

technical field [0001] The invention relates to the technical field of new energy motor casing production, in particular to a cast aluminum alloy motor casing with a built-in stainless steel spiral coil water channel. Background technique [0002] New energy vehicles are electric vehicles powered by electric energy. The electric drive and control system is the core of the electric vehicle. The drive motor is an important part of the electric drive and control system. The drive motor generates a lot of heat during operation. In order to ensure that the electric vehicle can last For stable operation, it is necessary to cool the drive motor during operation. In order to ensure the cooling effect, it is best to design and use a motor casing with a water-cooled circulation channel. At present, a spiral with better cooling effect is usually installed in the motor casing. The water-cooling circulation channel, because the aluminum alloy motor casing is a thin-walled part with a com...

AI Technical Summary

Problems solved by technology

[0003] 1. The sand core needs to be pre-embedded during pouring, and the strength of the spiral sand core with a small cross-sectional area is low, and the spiral sand core is easy to break during pouring, which makes it difficult to effectively form the spiral water-cooling circulation channel in the motor shell and make it difficult to manufacture in batches Qualified products;

[0004] 2. If adhesives are used to increase the strength of the spiral sand core, after the casting is completed, due to the poor collapse of the high-strength spiral sand core, it is difficult for the spiral sand core in the cast motor shell to flow from the spiral water-cooling circulation channel. If it is taken out, there will be residual sand in the spiral water-cooling circulation channel, which will easily block the water-cooling circulation channel and affect the cooling effect;

[0005] 3. The wall thickness of the motor casing is very thin, generally about 5mm. The sand core is easy to be eccentric during casting, resulting in uneven thickness of the motor casing, and a high risk of water leakage during machining;

[0006] 4. Many vent holes need to be made when pouring with sand cores, resulting in many process holes on the motor shell, which need to be sealed with plugs, which has the risk of leakage and the product is not beautiful;

[0007] 5. Manual cleaning of the residual sand in the spiral water-cooling circulation channel in the later stage has a large workload and high labor costs

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