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Introduction Of Automotive Electric Water Pump

Published:2021-08-09

Automotive Electric Water Pumps many new energy vehicles, RVs and other special vehicles are usually used in micro water pumps as water circulation, cooling or on-board water supply systems. This miniature self-priming water pump is collectively referred to as automotive electric water pump. The principle is that the circular motion of the motor causes the diaphragm inside the pump to reciprocate through the mechanical device, thus compressing and stretching the air in the pump cavity (fixed volume), and forming a vacuum at the discharge port under the positive pressure of the one-way valve (the actual output pressure is related to the pressurization of the pump discharge port and the characteristics of the pump), thus generating a pressure difference with the external atmospheric pressure under the pressure difference, and the water is pressed into the water inlet, and then discharged from the drain pipe, Therefore, under the action of the kinetic energy transmitted by the motor, the water is continuously sucked in and discharged, forming a relatively stable flow.


Automotive Electric Water Pump


The power of automotive electric water pumps is relatively small, generally below 1000W, and the motors generally use brushless DC motors. The automotive electric water pump has many advantages such as compact structure, convenient use, powerful functions, long 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 the industry, the application fields of automotive electric water pumps are becoming more and more extensive, especially in the field of new energy vehicles.


The new energy vehicle cooling water pump is a mechanical device that accelerates the circulation and cooling of the vehicle coolant. However, the existing vehicle cooling water pumps are usually complex in structure, use more parts, and high production costs. In addition, the existing vehicle cooling water pumps flow The coolant contains a lot of impurities. If these impurities are not removed, the normal operation of the water pump will be affected and the service life of the water pump will be shortened. The traditional impellers currently on the market are generally made of metal materials, which are prone to corrosion and oxidation, easy to damage, and have a short service life.


With the continuous improvement of new energy vehicles' requirements for driving range and light weight, more and more vehicle manufacturers are gradually moving from using air-cooled power batteries to liquid-cooled power batteries, using liquid working fluids. Indirect or direct contact with the heating component through the water channel, absorb the heat and bring it to the external radiator; at the same time, the liquid working fluid in the radiator is cooled by air cooling, and then the cooled liquid working fluid is returned to the inside of the heating component Re-absorb heat. In this way, the automotive electric water pump appears in the cooling circuit of the power battery, and liquid cooling is the current mainstream cooling method.

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