Four-wheel type driving circuit of electric automobile

Abstract

The invention relates to a four-wheel type driving circuit of an electric automobile. The four-wheel type driving circuit comprises an energy managing circuit, the energy managing circuit is connected between a power battery pack and a motor driving circuit, the motor driving circuit is connected with brushless continuous current motors of four wheels of the electric automobile correspondingly, and the energy managing circuit comprises an energy managing chip and an on-off controlling circuit; and the energy managing chip is further connected with a charging port and the motor driving circuit through CAN bus, the on-off controlling circuit comprises a relay K10, a relay K11, a relay K12 and a relay K14 which are arranged in an isolation box, and the energy managing chip is connected to a detector Q1 through the relay K10 and relay K11. The four-wheel type driving circuit is a set of circuit suitable for four-wheel type driving electric automobile, not only can meet requirement for power supply in the process of driving of the electric automobile, but also achieves the functions of protection of overcurrent and undervoltage, insulation detection, charging protection and passive prevention through the relays and fuses.

Description

technical field [0001] The invention relates to a four-wheel drive circuit of an electric vehicle, which belongs to the field of electric vehicle control. Background technique [0002] The four-wheel drive electric vehicle has become a unique research direction and research hotspot in the development of electric vehicles because of its simple vehicle structure, efficient transmission, and the outstanding advantages of real-time control of each wheel by means of a microcomputer to achieve differential steering. The electrical system of electric vehicles is responsible for energy supply and transmission, which is the prerequisite for stable and safe driving of electric vehicles. Among them, the normal working current of the power circuit can reach dozens or even hundreds of amperes, and the instantaneous discharge current is doubled. The main characteristics of this circuit are high current and high voltage; other non-power circuits, such as: battery SOC detection circuit and ...

AI Technical Summary

Problems solved by technology

Obviously, this method only changes the power source of the traditional car. Except that the torque characteristics of the electric motor are improved compared with the engine, it does not fundamentally change the vehicle's sports performance and give full play to the advantages of technological progress brought about by the electric drive system.

In addition, most of the research on electric vehicles currently focuses on the driving force control, regenerative braking control and stability control of electric vehicles, while there are not many studies on the design of electric vehicle electrical systems. design for less

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