Do you know that the main applications of automotive electronic water pumps in new energy vehicles

As the name suggests, electronic water pump is a pump with an electronically controlled drive unit. It mainly consists of three parts: an overcurrent unit, motor unit, and electronic control unit. With the help of the electronic control unit, the working status of the pump can be freely adjusted, such as: controlling the start/stop of the pump, flow control, pressure control, anti-dry running protection, self-maintenance, and other functions. The pump can be controlled through external signals.

The magnet of the brushless DC centrifugal water pump is integrated with the impeller to form the magnetic rotor of the motor. There is a directly injection-molded bushing in the middle of the rotor. The shaft sleeve is made of high-resistant ground graphite fixed in the rotor body, and the motor stator and circuit board are filled with epoxy resin glue in the pump body. There is a cavity between the stator and the rotor. The pump body cavity is connected to the rotor cavity of the motor. The motor's rotor cavity is completely isolated from the motor stator and motor controls. The rotating shaft is made of zirconium oxide with high smoothness and strength. The shaft integrates the motor and the pump body, eliminating the need for conventional mechanical shaft seals, so it is completely sealed and leak-proof.

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

The new energy vehicle cooling water pump is a mechanical device to accelerate the flow circulation of vehicle coolant. However, existing automobile cooling water pumps usually have complex structures, use many parts, have high production costs, and have large flow rates. 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 prone to corrosion and oxidation, are easily damaged, and have a short service life.

In order to ensure the normal use of the electrical components of new energy vehicles, the inlet coolant temperature should not be higher than 65°C, so it must be maintained by the radiator, electronic water pump, the cooling circuit composed of , motor controller, and drive motor series is a low-temperature cooling circuit (relative to the engine cooling circuit). The main function of the electric water pump is to meet the technical requirements of thermal management of the drive motor, electric components, etc. Under any working conditions of the vehicle, the electronic components can be met. In new energy vehicles, the need for electric water pumps varies depending on the components to be cooled. Generally, the power demand of electric water pumps used to cool drive motors and electrical components of passenger cars is usually below 150W, and electric water pumps driven by 12V DC motors can be used, and the water pumps can be used to eliminate static and dynamic sealing.