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Automobile electric water pump

Sources:Dongguan Shenpeng Electronics Co., Ltd  Release date: 2020-10-27  Browsing:

electric water pump is a pump with an electronic control drive unit. It is mainly composed of three parts: overcurrent unit, motor unit and electronic control unit. With the help of the electronic control unit, the working status of the pump can be adjusted freely, for example: control the start/stop of the pump, flow control, pressure control, anti-dry running protection, self-maintenance and other functions, and can control the pump through external signals.

 

The magnet and impeller of the brushless DC centrifugal water pump are integrally formed to form the magnetic rotor of the motor. There is a shaft sleeve directly injection molded in the middle of the rotor. The shaft sleeve is a high-performance abrasive graphite fixed in the rotor body, and the motor stator and circuit board pump body are filled with epoxy resin. There is a cavity between the stator and the rotor. The pump body cavity is connected with the rotor cavity of the motor. The rotor cavity of the motor is completely isolated from the motor stator and motor controls. The rotating shaft is made of high-smooth, high-strength zirconia. The shaft connects the motor and the pump body into one, without the need for a conventional mechanical shaft seal, so it is completely sealed and leak-proof.


Electronic water pump


The power of the electric water pump is relatively small, generally below 1000W, and the motor is generally a DC brushless motor. The electric water pump has many advantages such as compact structure, convenient use, powerful functions, long service life, stable performance, low noise, low energy consumption, and high efficiency. Therefore, it is favored by industry insiders. With the rapid development of industry, the application fields of electric water pumps are becoming more and more extensive, especially in the field of new energy vehicles. In addition, with the rapid development of technology, the application of microelectric water pumps in artificial intelligence, biotechnology, and fields will be a brand-new change, which has far-reaching significance for the development of modern technology industries.


Electronic water pump


The new energy vehicle cooling water pump is a mechanical device used to accelerate the circulation of vehicle coolant. However, the existing automobile cooling water pump usually has a complicated structure, uses many parts, and has a high production cost, and the existing automobile cooling water pump has a large flow rate. The passing coolant contains a lot of impurities. If these impurities are not removed, the normal operation of the pump will be affected and the service life of the pump will be shortened. Conventional impellers on the market are usually made of metal materials, which are easily corroded and oxidized, easily damaged, and have a short service life.


In order to ensure the normal use of electrical components of new energy vehicles, the inlet coolant temperature is not higher than 65°C. Therefore, the cooling circuit composed of the radiator, electric water pump, motor controller, and drive motor is a low-temperature cooling circuit (relative to the engine Cooling circuit). The main function of the electric water pump is to satisfy the driving motor, electric parts, etc. Under any working conditions of the vehicle, the electronic parts can meet the technical requirements of thermal management. In new energy vehicles, the demand for electric water pumps varies according to the components to be cooled. Generally, the power requirement of the electric water pump for cooling the driving motor and the electric parts of the passenger car is usually 150W or less, and an electric water pump driven by a 12V DC motor can be used, and the water pump can adopt a form that eliminates static and dynamic seals.


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