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Integrated cooling and lubricating system for electric drive assembly

A cooling lubrication, integrated technology, applied in the direction of gear lubrication/cooling, cooling/ventilation device, electromechanical device, etc., can solve the unfavorable development of high-power motor electric drive assembly, the cooling liquid cannot be cooled by heat source, and the use of motor bearings Life damage and other problems, to improve the reliability of oil rejection, prevent shaft current corrosion, and improve the service life

Pending Publication Date: 2022-03-04
NANJING BANGQI AUTOMATIC TRANSMISSION CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current cooling and lubrication method has the following problems: First, due to the large thermal resistance between the casing water jacket and the heat source of the motor system, the coolant cannot efficiently and directly cool the heat source, resulting in limited motor power. Bearings cause the motor speed to be limited, which is not conducive to the high-speed development of the motor and the high-power development of the electric drive assembly
The presence of motor shaft currents is extremely destructive to the service life of motor bearings

Method used

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  • Integrated cooling and lubricating system for electric drive assembly
  • Integrated cooling and lubricating system for electric drive assembly
  • Integrated cooling and lubricating system for electric drive assembly

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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention , but not to limit the scope of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, ...

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Abstract

An integrated cooling and lubricating system for an electric drive assembly belongs to the technical field of motor drive systems and comprises a motor assembly and a speed reducer assembly which are assembled and connected, the motor assembly comprises a rotor assembly and a stator assembly, and an oil cooling assembly is arranged on the motor assembly. An oil outlet of the oil cooling assembly is communicated with an oil way I and an oil way II, the oil way I enters the rotor assembly through the speed reducer assembly, and the oil way II enters the other end of the stator assembly through one end of the stator assembly. The heat management performance and the system reliability of the electric drive assembly are effectively improved, the problem that current of a motor shaft under a high-pressure platform corrodes a bearing can be solved, and high-pressure, high-power and high-rotating-speed development of the electric drive assembly is facilitated.

Description

technical field [0001] The invention relates to the technical field of motor drive systems, in particular to an integrated cooling and lubricating system for an electric drive assembly. Background technique [0002] As an important part of pure electric vehicles, the electric drive system structure has attracted much attention for its structural integration and system reliability. Under the development trend of electric vehicle powertrain towards high voltage, high power and high motor speed, the motor drive system The thermal efficiency and reliability have become important performance indicators, and an electric powertrain with good reliability, high power density and good thermal performance has become the target of the market. [0003] According to the water-cooled motor scheme commonly used in pure electric vehicles in the current market, the motor is isolated from the cooling and lubrication system of the reducer or other transmission mechanisms. The motor casing needs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/20H02K5/20H02K7/116H02K9/19H02K5/16H02K5/124H02K5/14F16H57/04
CPCH02K1/20H02K5/203H02K7/116H02K9/19H02K5/165H02K5/124H02K5/14F16H57/0413F16H57/0476
Inventor 胡凯俊路超高华曹启亮
Owner NANJING BANGQI AUTOMATIC TRANSMISSION CO LTD
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