High temperature test system for water pump drive motor and controller

Abstract

The invention discloses a high temperature test system for a water pump drive motor and a controller. The system comprises a drive motor, the controller, a water pump, a radiator, an electric heatingbox and a control and data acquisition unit, wherein the drive motor and the controller are to-be-tested device; the water pump and the radiator are connected by a pipeline to form a closed circulation pipeline; the water pump is driven by the drive motor; a temperature sensor, a pressure sensor, an electronic valve and a flow meter are connected to the pipeline between a water outlet of the waterpump and the radiator; the pressure sensor is also installed on the pipeline between a return water port of the water pump and the radiator; the drive motor and the controller are respectively installed in an electric heating box with controllable ambient temperature; the control and data acquisition unit are simultaneously connected to the drive motor and the controller; and the control and dataacquisition unit monitors and records the input current and voltage of the controller, the controller chip temperature, the motor shaft end temperature of the drive motor, and determines the high temperature test condition of the drive motor and the controller through the system running time.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, and in particular relates to a high-temperature test system for a water pump drive motor and a controller. Background technique [0002] In the actual use of the vehicle, the operating conditions of the vehicle are constantly changing due to the influence of many factors such as the road surface and the environment. The traditional cooling system water pump is driven by the engine, and its speed is limited by the operating conditions of the engine, so it cannot dynamically respond to the driving of the vehicle. The transient change of time causes the waste of system capacity and the increase of power consumption ratio, which is not conducive to the reliable operation of the engine. Therefore, with the continuous development of electric drive technology, water pump drive is developing from the original engine mechanical drive to electric drive. The research on highly integrated electro...

AI Technical Summary

Problems solved by technology

If the load motor and the motor under test work in the same control mode, a large impact torque will be generated on the drive shaft of the motor, and the anti-drag impact may cause damage to the motor under test, load motor, torque speed sensor, and even cause safety accidents

In addition, the load error between the load simulated by the motor and the water pump drive motor under the actual vehicle working conditions is relatively large, and the test accuracy is low.

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