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Electric automobile cooling system, control method and electric automobile

A technology for electric vehicles and cooling systems, applied in electric vehicles, electric components, cooling/ventilation devices, etc., can solve the problems of high lubricating oil viscosity, decreased cruising range, poor lubrication performance, etc., to improve cruising range and service life. , the effect of improving energy efficiency

Pending Publication Date: 2022-08-05
CHINA FIRST AUTOMOBILE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lubricating oil has high viscosity at low temperature and poor lubricating performance
At the same time, due to the high viscosity, it will also bring additional resistance to the reducer, resulting in additional torque loss, which is intuitively manifested as a decrease in cruising range in electric vehicles

Method used

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  • Electric automobile cooling system, control method and electric automobile
  • Electric automobile cooling system, control method and electric automobile
  • Electric automobile cooling system, control method and electric automobile

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Embodiment Construction

[0048]In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only the present invention. Some examples, but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0049] In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection ...

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Abstract

The invention discloses an electric vehicle cooling system, a control method and an electric vehicle. The electric vehicle cooling system comprises a vehicle control unit, a motor cooler, an oil injection pump, a three-way valve, an electric oil pump and a heat dissipation device. Heat generated by the driving motor is used for heating lubricating oil of the speed reducer, the heat generated in the running process of the driving motor is effectively utilized, and the energy efficiency is improved; the heated lubricating oil is sprayed to the gear of the speed reducer through the nozzle of the oil injection pump, the problem that the endurance mileage of the electric automobile is reduced due to the fact that the temperature is too low and the viscosity of the lubricating oil is increased is solved, and the endurance mileage of the electric automobile is increased. When the temperature of the lubricating oil is too high, the vehicle control unit controls the three-way valve to communicate with the loop where the heat dissipation device is located to cool the lubricating oil, the problems that the temperature of the lubricating oil is too high, lubricating oil deteriorates, the lubricating effect of the reducer is affected, and the service life of the reducer is affected are solved, and the service life of the lubricating oil and the reducer is prolonged.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle cooling system, a control method and an electric vehicle. Background technique [0002] In the field of electric vehicle technology, due to the output power characteristics of the electric motor, a reducer is usually used as an effective technical means to increase the output torque of the electric motor and change the overall transmission ratio of the electric vehicle. By setting the reducer, it is convenient to increase the speed of the motor to obtain better acceleration performance in the high-speed section, thereby avoiding the defect that the motor is difficult to increase the output torque at high speed. [0003] Under normal circumstances, in order to achieve higher load and longer service life, lubricating oil is often used as the lubricating medium in the reducer. Lubricating oil has high viscosity at low temperature and poor lubrication p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/04F16N7/38F16N39/02F16N39/04H02K9/193
CPCF16H57/0413F16H57/0417F16H57/0435F16H57/0445F16H57/0456F16N7/38F16N39/02F16N39/04H02K9/193Y02T10/72
Inventor 赵慧超刘建康尹建坤霍云龙牛超凡胡志林刘力源车显达
Owner CHINA FIRST AUTOMOBILE
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