Three-phase inverter circuit integrated with drive and charging functions, electric vehicle drive and charge function integration device, and vehicle

Abstract

The present invention relates to a three-phase inverter circuit integrated with drive and charging functions, an electric vehicle drive and charge function integration device, and a vehicle. Accordingto control of switches in a first charge circuit and a second charge circuit, charging for a power battery can be achieved, and according to control of switches in a first drive circuit and a seconddrive circuit, drive of the motor can be achieved by employing the power battery. Three-phase winding of the motor is not required when the power battery is charged, namely, connection or disconnection of the three-phase winding does not influence the normal charge of the battery. When a power tube of the inverter circuit generates short-circuit faults, an inverter bridge module with short-circuitfaults can be stopped to work through control of on-off of switches in the (first / second) charge circuits and the (first / second) drive circuits, and the normal work of inverter bridge modules withoutfaults can be ensured so as to ensure normal charge and drive of the vehicle when one inverter module has faults.

Description

technical field [0001] The invention belongs to the technical field of motor system and control, and in particular relates to a three-phase inverter circuit with integrated driving and charging functions, a device and an automobile. Background technique [0002] As an important way to solve the environmental pollution and energy crisis in the transportation field, electric vehicles have attracted more and more attention from the global field. In today's increasingly mature technology of the automobile industry, the key constraints for the popularization and promotion of electric vehicles are batteries and charging technology, among which charging technology Become the key to the range and cost of electric vehicles. [0003] At present, there are two charging methods for the battery of electric vehicles. One is the vehicle-mounted slow charging device. The battery charging device is placed on the electric vehicle, and the ordinary single-phase AC power supply or the charging ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a three-phase inverter circuit, device and automobile with integrated driving and charging functions, which is used to solve the problem that the existing electric vehicle driving and charging integrated device cannot ensure normal operation when the power tube of the inverter circuit is short-circuited question

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