Electric car high-voltage electrical system and control method thereof

Abstract

The invention discloses an electric car high-voltage electrical system. The system comprises a power battery, a first switch, a charging circuit, a second switch and a pre-charging circuit, at least one controller and a discharging circuit. One end of the first switch is connected with a cathode of the power battery. The charging circuit is used for charging the power battery. One end of the second switch is connected with an anode of the power battery. The at least one controller is used for performing pre-charging when the first switch and a first switch component of the pre-charging circuit are closed and the second switch is open and performing electrifying when the first switch and the second switch are closed and the first switch component of the pre-charging circuit is open. The discharging circuit is used for discharging pre-charged capacitors of the at least one controller when the first switch, the second switch and the first switch component of the pre-charging circuit are open and a second switch component of the discharging circuit is closed. The high-voltage electrical system has the advantages of being safe and reliable. The invention further discloses an electric car high-voltage electrical system control method.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a high-voltage electrical system and a control method of an electric automobile. Background technique [0002] With the development and progress of vehicle battery technology, the advantages of pure electric vehicles with low energy consumption, zero emissions, and light pollution are becoming more and more significant. At present, there is no very mature technical solution for the design and manufacture of pure electric vehicles, and it is only advancing in exploration. The pure electric vehicles that have been put into production still have many technical defects and even hidden dangers, especially in the system structure design of the vehicle, energy continuity, start / stop and driving process control, vehicle functionality and safety, etc. There are still some problems in terms of production, so that the current pure electric vehicles cannot be fully marketed. [0003] T...

AI Technical Summary

Problems solved by technology

The current description of the high-voltage system of pure electric vehicles generally introduces a high-voltage electrical system architecture, and lacks a description of the control method of the high-voltage electrical system. Therefore, the electrical system of pure electric vehicles is much more complicated than that of traditional fuel vehicles.

If the high-voltage electrical system structure and control method are improperly designed, it may not only cause damage to the electrical appliances of the vehicle, thereby affecting the safety and functionality of the vehicle, and may even bring danger to the lives of drivers, passengers and maintenance personnel.

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