Automotive electronic water pump

Abstract

The invention discloses an automobile electronic water pump, and belongs to the technical field of water pumps. The water pump comprises a pump shell, and a motor, an impeller and a control panel arearranged in the pump shell; the motor comprises an output shaft, a rotor assembly and a stator assembly, and the impeller is fixedly arranged on the output shaft; and the water pump further comprisesa fixing assembly, and the control panel is arranged in the pump shell through the fixing assembly. According to the automobile electronic water pump, the structure of an existing electronic water pump is improved, the fixing assembly is additionally arranged on the basis of the existing electronic water pump, the control panel is fixed in the pump shell through the fixing assembly, the heat dissipation and fixing effects are good, and the control panel is not prone to looseness and displacement under a vibration working condition; and in addition, the control panel is fixed through the fixingassembly, is not directly connected with the framework of the stator assembly of the motor, and is far away from the main heating source of the motor so that the working temperature of the control panel can be effectively reduced, the service life of each power component on the control panel can be prolonged, and the service life of the whole automobile electronic water pump can be further prolonged.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to an electronic water pump for vehicles. Background technique [0002] At present, with the rapid development of new energy vehicles such as pure electric vehicles and hybrid vehicles, electronic water pumps have been widely used. As an important part of the automobile cooling system, the electronic water pump is mainly used to circulate and cool the engine, turbocharger, battery, drive motor and drive controller. When the electronic water pump cools the engine and turbocharger, the working temperature of the electronic water pump is generally above 50°C, and the temperature of the internal circulating coolant can reach above 90°C, which puts extremely high demands on the working performance of the electronic water pump. Require. Since the electronic water pump integrates components such as motors and control boards, when the electronic water pump is working, power components...

AI Technical Summary

Problems solved by technology

In addition, when the electronic water pump for vehicles is working, there is a vibration condition, which will affect the connection reliability of the connectors on the control board, and further affect the service life and reliability of the electronic water pump.

[0003] The control board of the existing automotive electronic water pump is generally fixed on the plastic frame at the tail of the motor stator. Since the motor stator is the main heat source of the electronic water pump, the control board is in a high-temperature working area, and due to the low thermal conductivity of the plastic frame, the heat dissipation performance Poor, which will further lead to the high temperature of the environment where the control board is located, which will seriously affect the service life of the control board

In addition, the electronic components on the existing control board are usually directly welded on the control board. Larger components such as electrolytic capacitors and inductors lack a fixed structure. When in use, the electronic components are easy to loosen under vibration conditions. Affect the service life of the electronic water pump

Furthermore, the input and output ends of existing electronic water pumps are usually directly welded on the control board without a transfer structure, the welding position is limited, and there is a risk of welding failure at the welding points

Images