Power system and vehicle

Abstract

The invention provides a power system and a vehicle. The power system comprises a battery, a motor controller, a first magnetic ring and a motor; the cathode of the battery is connected with the cathode of the charging power supply; the first ends of a first bridge arm circuit, a second bridge arm circuit and a third bridge arm circuit of the motor controller are all connected with the positive electrode of the battery, and the second ends of the first bridge arm circuit, the second bridge arm circuit and the third bridge arm circuit are all connected with the negative electrode of the battery; windings of the motor are connected with the connecting ends of the corresponding bridge arm circuits; wherein a first connecting line, a second connecting line and a third connecting line penetrate through the first magnetic ring, the first end of the third winding is further connected with the positive electrode of the charging power source through a motor outgoing line, and the common end of the motor outgoing line and the third connecting line is located at the side, close to the motor controller, of the first magnetic ring. Thus, according to the power system and the vehicle, common-mode interference can be reduced through the first magnetic ring, and it can be avoided that the first magnetic ring is saturated and influences the effect of restraining the common-mode interference.

Description

technical field [0001] The present application relates to the field of power technology, in particular to a power system and a vehicle. Background technique [0002] With the continuous development of new energy electric vehicle technology, new energy electric vehicles are gradually replacing traditional fuel vehicles and becoming the first choice for users to buy cars. [0003] The power system of a new energy electric vehicle includes a battery, a motor controller, and a motor. Among them, in the normal driving mode of the power system, the DC voltage is provided by the battery, and the DC voltage is converted into AC voltage by the motor controller to drive the motor to rotate. In the charging mode of the new energy electric vehicle, the battery is charged by the charging power source. [0004] However, the existing power system will generate relatively large common-mode interference during operation, thereby generating relatively large electromagnetic interference. C...

AI Technical Summary

Problems solved by technology

[0004] However, the existing power system will generate large common-mode interference when it is working, which will generate a large degree of electromagnetic interference

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