High-pressure-resistant oil-immersed motor pump

Through the double sealing design and control shell protection, the oil leakage problem of the motor pump under high voltage is solved, and the high-voltage seal and controller protection are achieved, which is suitable for 800V high-voltage automotive platforms.

CN223387467UActive Publication Date: 2025-09-26SICHUAN AEROSPACE SHIYUAN TECH CO LTD
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Patent Information

Application Number
CN202422970098.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-03
Publication Date
2025-09-26
Estimated Expiration
2034-12-03

AI Technical Summary

Technical Problem

In the prior art, the pump has the problem of oil leakage when outputting high pressure, especially when the output shaft of the motor rotates at a high speed, and complete sealing cannot be achieved.

Method used

A double sealing design is adopted, including a stator watertight sleeve, aviation connector and multiple sealing rings. Combined with a brushless motor and a magnetic encoder, a sealed connection between the motor shaft and the oil pump is achieved. The controller is protected by a control housing to prevent the ingress of media.

Benefits of technology

It achieves a leak-free sealed connection under high pressure, protects the controller, and improves the compactness and reliability of the motor pump. It also has temperature and pressure sensing functions and is suitable for 800V high-voltage automotive platforms.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model discloses a high pressure resistant oil immersion type motor pump which comprises a motor stator, a motor rotor, a motor shaft, a motor shell, a motor end plate, an aviation plug and an oil pump, the motor end plate is fixedly arranged at one end of the motor shell in a sealed mode, and the oil pump is fixedly arranged at the other end of the motor shell in a sealed mode. One end of the motor shaft is rotationally arranged in the oil pump and used for driving the oil pump to work, the other end of the motor shaft is rotationally arranged in the motor end plate, a motor rotor is coaxially and fixedly arranged on the motor shaft, and a motor stator matched with the motor rotor is fixedly arranged in the motor shell. And the aviation patch plug is hermetically and fixedly arranged on the motor end plate and is electrically connected with the motor stator. One end of the motor shaft is arranged in the oil pump, the other end of the motor shaft is arranged in the motor shell, the motor shell and the oil pump are connected in a sealed mode, oil leakage is avoided, meanwhile, oil enters the motor shell, the lubricating function can be achieved, and parts in the motor shell can be cooled.
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