Electronic water pump

Abstract

The invention discloses an electronic water pump. The electronic water pump comprises a pump case, a rotor, a stator, a water pump impeller and a driving plate. The rotor, the stator and the water pump impeller are installed in the pump case, the interior of the pump case is divided into a water pump water pumping chamber and a motor chamber in front and back arrangement by a flow channel partition plate, the rotor and the stator are located in the motor chamber, the water pump impeller is located in the water pump water pumping chamber, a core shaft of the rotor passes through the flow channel partition plate and drives the water pump impeller to pump water, and the driving plate is arranged on the rear end face of the flow channel partition plate to transfer heat generated by the drivingplate to the flow channel partition plate. According to the electronic water pump, the driving plate is arranged on the rear end surface of the flow channel partition plate, and the heat generated bythe driving plate is quickly and effectively taken away by making use of characteristics of large flow of cooling liquid in a working chamber of the water pump impeller, so that the heat dissipationproblem of the driving plate is effectively solved; the flow channel partition plate and the front end case adopt a split structure to skillfully solve the problem of connection between the driving plate and a stator three-phase winding, the installation efficiency of the driving plate is improved to facilitate whole machine installation, and mass production is achieved.

Description

technical field [0001] The invention relates to the field of electronic water pumps, in particular to an electronic water pump with good heat dissipation. Background technique [0002] The high-power electronic water pump has a large working current and a large heating power during operation. Even if the whole machine has not reached a thermal equilibrium state at room temperature, the temperature of the electronic components has exceeded the safe temperature range for use. The service life of the water pump will be greatly reduced, and it is likely to burn out within a certain period of time, which will bring great safety hazards to customers. [0003] At present, the driving board of the high-power electronic water pump on the market is basically rear-mounted, and the hollow shaft structure is used for heat dissipation. However, due to the limitation of the size of the rotor, the size of the hollow shaft is also limited. Therefore, the flow rate and flow rate of the coola...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the size of the rotor, the size of the hollow shaft is also limited. Therefore, the flow rate and flow rate of the coolant used to flow and cool the drive plate are only a small part of the capacity of the water pump itself. After the power of the electronic water pump is increased, the heat dissipation is far from meeting the requirements. As a result, the power increase of the electronic water pump and the use of the environment are limited

Images