Air-cooled motor for new energy vehicle

Abstract

The invention discloses an air-cooled motor for a new energy vehicle, and belongs to the technical field of motors. The air-cooled motor for the new energy vehicle comprises a motor body, wherein themotor body is electrically connected with a temperature sensor, a controller and a clutch; a motor shaft on the motor body is provided with a fan which is selectively connected with the motor shaft through the clutch, the outer end of the motor body is fixedly connected with a plurality of cooling scales uniformly distributed, and air ducts are dug at the inner ends of the cooling scales to achieve the effect on natural cooling for the motor by employing the natural wind through cooperative use of an air collection port and an inclined air duct, a double-performance refrigerating rod in the wind channel is employed to release liquid nitrogen when the running speed of the vehicle is fast when the wind speed is large to reduce the temperature of the natural wind passing through the double-performance refrigerating rod so as to obviously improve the effect on taking away the heat on the motor by the natural wind, and to reduce the environment temperature around the motor by the liquid nitrogen itself so as to accelerate the heat dissipation on the motor.

Description

technical field [0001] The invention relates to the technical field of electric motors, and more specifically, relates to an air-cooled electric motor for new energy vehicles. Background technique [0002] New energy vehicles refer to all other energy vehicles except gasoline and diesel engines, including fuel cell vehicles, hybrid vehicles, hydrogen energy vehicles and solar vehicles. Its exhaust emissions are relatively low. According to incomplete statistics, there are more than 4 million liquefied petroleum gas vehicles and more than 1 million natural gas vehicles in the world. At present, most of the new energy vehicles on sale in the Chinese market are hybrid vehicles and pure electric vehicles. According to the definition announced by the National Development and Reform Commission of the People's Republic of China, new energy vehicles refer to the use of unconventional vehicle fuels as power sources (or the use of conventional vehicle fuels and new vehicle power dev...

AI Technical Summary

Problems solved by technology

[0003] The invention patent with the application number CN201110154753.4 is to overcome the high energy consumption and use cost of the electric motor air cooling device in the prior art, the poor overall heat dissipation effect caused by local cooling, and the short stroke of the ventilation air path and the poor heat dissipation effect The defects and deficiencies of the electric vehicle provide an air-cooled motor for an electric vehicle, which uses the air flow generated by the vehicle to form natural ventilation, which significantly reduces energy consumption and use costs, and adopts a spiral air duct to significantly increase the air path stroke. Improve the heat dissipation effect, ensure the normal operation of the motor, and increase the service life of the motor

However, the spiral air duct will face the problem of too much wind resistance, resulting in poor ventilation, which limits the heat dissipation capacity of the motor to a certain extent, and cannot control the cooling performance. However, only natural wind is used for heat dissipation, although it reduces energy consumption and usage. Cost, but the heat dissipation effect is obviously insufficient, especially when the car is driving continuously, the motor works for a long time, and the heat is serious. Only natural wind is used for heat dissipation, resulting in the heat dissipation rate not keeping up, and the motor is easily damaged

[0004] Existing motors generally use air-cooling and water-cooling methods for heat dissipation. Water-cooling heat dissipation requires the installation of water tanks, water pumps, water pipes and other components, which will increase the burden on the car, increase the energy consumption of the car, and are prone to water leakage. When the natural wind is used for air cooling and heat dissipation, although the energy consumption and the use cost are reduced, the heat dissipation effect is obviously insufficient, especially when the car is continuously driving, the motor works for a long time and the heat is serious. If not, it is very easy to damage the motor

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