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Title:
LIQUID COOLING DRIVE MOTOR FOR VEHICLES
Document Type and Number:
WIPO Patent Application WO/2019/184580
Kind Code:
A1
Abstract:
A liquid cooling drive motor for vehicles. A liquid inlet (50), which leads to a rear end portion of a rotating shaft (5), is provided on a motor housing (1). A first dynamic sealing device (51) corresponding to the liquid inlet is sheathed on the rotating shaft, and an annular rotating shaft liquid supply cavity (52) is formed between the liquid inlet and the first dynamic sealing device. A rotating shaft inlet passage (53) is provided on a rotating shaft annular surface which is sealed by the first dynamic sealing device. The annular rotating shaft liquid supply cavity communicates the liquid inlet with the rotating shaft inlet passage. A rotating shaft cooling cavity (54) in communication with the rotating shaft inlet passage is provided within the rotating shaft. A rotating shaft outlet passage (60) is provided on a side of the rotating shaft away from the rotating shaft inlet passage, an outer side of the motor housing is provided with at least one liquid outlet (11), and the rotating shaft cooling cavity is in communication with at least one liquid outlet by means of the rotating shaft outlet passage. The liquid cooling driving motor for vehicles provides the dynamic sealing device to seal the cavity between the liquid inlet and the rotating shaft having a relative motion, the sealing effect is better and liquid leakage is prevented. Providing the rotating shaft cooling cavity can effectively cool the heating rotating shaft and thereby improve the lifetime of the drive motor.

Inventors:
SONG, Qiang (Song Qiang, 5 South Zhongguancun Street Haidian District, Beijing, Beijing 1, 100081, CN)
ZHANG, Zichao (Song Qiang, 5 South Zhongguancun Street Haidian District, Beijing, Beijing 1, 100081, CN)
Application Number:
CN2019/073468
Publication Date:
October 03, 2019
Filing Date:
January 28, 2019
Export Citation:
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Assignee:
BEIJING INSTITUTE OF TECHNOLOGY (Song Qiang, 5 South Zhongguancun Street Haidian District, Beijing, Beijing 1, 100081, CN)
International Classes:
H02K9/19
Foreign References:
CN108282056A2018-07-13
CN208128076U2018-11-20
CN106787452A2017-05-31
CN206237254U2017-06-09
CN105680628A2016-06-15
Attorney, Agent or Firm:
BEIJING HIGH-DREAM INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (Wei Anle, Room308 Block B, Zhengfa Building, NO. 1, Ji Gate, Haidian District, Beijing, Beijing 8, 100088, CN)
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