Electric automobile integrated drive system

Abstract

The invention discloses an electric automobile integrated drive system, comprising a power assembly composed of a motor, a motor controller and a reducer. The motor controller is connected with a battery of an electric vehicle, the motor and the reducer; main loop topology of the motor controller is provided with a bidirectional DC / DC converter and bidirectional DC / AC converter by means of devicemultiplexing, so that the whole system is given a charger function. The charger function is integrated to the main loop topology of the motor controller, the motor controller is highly integrated, thesize is reduced, vehicle layout space is saved and the cost is reduced. The charger function is provided through device multiplexing in the motor controller; two major modes of electric vehicle are employed, namely, the motor is driven in the normal state, and in the idle state, a bidirectional DC / DC (buck-boost) circuit and bidirectional DC / AC circuit may be used to keep original inversion and may also provide rectifying to charge the battery.

Description

technical field [0001] The invention relates to the technical field of new energy electric vehicles, in particular to an electric vehicle integrated drive system solution, the specific solution is that the controller integrates a main circuit bidirectional DC / AC and a Buck-Boost bidirectional DC / DC step-down circuit to realize a bidirectional charger (OBC) function. Background technique [0002] At present, with the increasing energy shortage and environmental pollution and the rising international oil prices, pure electric vehicles, as a branch of green new energy technology, have zero emissions, low noise, relatively simple structure, and can realize multiple sources of transportation energy. Advantages such as globalization have become the development direction of future automotive technology, and they are gradually favored by people. The market share is also increasing year by year, and the needs of users are also increasing, which prompts the product development functio...

AI Technical Summary

Problems solved by technology

[0003] However, the cruising range of electric vehicles is also a key consideration and concern of users, and many vehicle manufacturers are also troubled by this.

Electric vehicles are the second car in the family, but the development of electric vehicles is troubled by the mileage. The mileage of the vehicle is closely related to the battery. If you want to increase the mileage from the battery, you need to increase the battery life. The volume of the battery makes the charging time longer, the layout space of the vehicle becomes smaller, and the weight of the vehicle increases

[0004] At present, the charging equipment has not fully popularized the charging equipment introduced by some manufacturers, and the structure is not uniform and the price is expensive.

Images