An energy release device for a new energy motor is disclosed

Abstract

An energy release device for a new energy motor relates to an energy release circuit, and comprises a control unit and a power supply unit, a voltage sampling unit and an energy discharge power unit which are connected to two ends of a motor direct current bus in parallel, wherein the output end of the power supply unit is connected with the power supply end of the control unit, the voltage sampling unit is connected with the input end of the control unit, and the energy discharge power unit is connected with the output end of the control unit. The invention can be directly installed at the output end of the power battery analog power supply, and can also be directly used as a separate module, so as to provide an effective energy release loop when the power battery analog power supply is suddenly cut off or damaged, and protect the motor controller from being damaged.

Description

technical field [0001] The invention relates to an energy discharge circuit, in particular to an energy discharge device for testing new energy motors. Background technique [0002] At present, the laboratory and production tests of mainstream new energy motors use the power battery simulation power supply, which greatly improves the test efficiency, but it also has its own shortcomings of burning out the motor and controller in emergencies. The essence of the power battery simulation power supply is a bidirectional power supply, which can not only provide the energy required for the operation of the test motor or motor controller, but also feed the feedback electromotive force during the test process back to the grid. This kind of power battery simulation power supply has no problem in the test under normal conditions, but once the power supply is suddenly cut off (tripped), protected or damaged, it will cause the reverse electromotive force of the motor to have no discharg...

AI Technical Summary

Problems solved by technology

[0002] At present, the laboratory and production tests of mainstream new energy motors use the power battery simulation power supply, which greatly improves the test efficiency, but it also has its own shortcomings of burning out the motor and controller in emergencies. The nature of the power battery simulation power supply is a bidirectional power supply, which can not only provide the energy required for the operation of the test motor or motor controller, but also feed back the electromotive force during the test process to the grid

This kind of power battery simulation power supply has no problem in the test under normal conditions, but once the power supply is suddenly cut off (tripped), protected or damaged, it will cause the reverse electromotive force of the motor to have no discharge circuit, resulting in a sharp rise in the DC bus voltage until it burns out. Bad controller, there are potential safety hazards, and cause a lot of economic losses

Images