DC control system for electric automobile motor testing

Abstract

The invention relates to a DC control system for electric automobile motor testing. A power supply input end of an air circuit breaker is connected with an anode of a bus, a power supply output end of the air circuit breaker is sequentially connected with a first DC contactor and a second DC contactor, a resistor R is connected in parallel to the first DC contactor, a power supply output end of the second DC contactor is connected with a motor controller, an anode of a DC switch power supply is connected with a DC power supply input end of the first DC contactor through a switch contact K of the motor controller and is respectively connected with DC power supply input ends of the second DC contactor, a local signal lamp and a remote signal lamp, and a cathode of the DC switch power supply is respectively connected with cathodes of the first DC contactor, the second DC contactor, the local signal lamp and the remote signal lamp. The DC switch power supply is respectively connected with the switch contact K of the motor controller and a remote control button through a terminal board. According to the invention, the voltage of the bus is remotely controlled by adopting the DC contactors, thus the personal is ensured to switch on or off the voltage of the bus within a safe range.

Description

technical field [0001] The invention relates to a testing device for an electric vehicle motor. In particular, it relates to a DC control system for electric vehicle motor testing used for bus voltage safety during electric vehicle motor testing. Background technique [0002] In the past, when conducting motor tests, the DC bus was powered by a single switch control. This method is not convenient to use, has poor safety, and takes a long time to take measures in case of emergency. With the continuous improvement of the motor power of electric vehicles, the use of high-voltage controllers is becoming more and more extensive. The previous methods cannot provide pre-power-on functions for the controllers, so the motor controllers are prone to damage due to instantaneous high voltage. Nowadays, electric vehicle manufacturers need to test batches of motors and controllers, and need a safe and practical DC control system specially suitable for electric vehicle motor testing. Co...

AI Technical Summary

Problems solved by technology

[0002] In the past, when conducting motor tests, the DC bus was powered by a single switch control. This method is not convenient to use, has poor safety, and takes a long time to take measures when an emergency occurs.

With the continuous improvement of the motor power of electric vehicles, the use of high-voltage controllers is becoming more and more extensive. The previous methods cannot provide pre-power-on functions for the controllers, so the motor controllers are easily damaged due to instantaneous high voltage.

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