Electric vehicle and high-voltage circuit system thereof

Abstract

The invention relates to an electric vehicle and a high-voltage circuit system thereof. The high-voltage circuit system includes a power battery pack, a motor controller, and an electric loading device, wherein the power battery pack is connected with a power supply busbar, the power supply busbar is in power supply connection with the motor controller and the electric loading device, and a corresponding control switch is arranged in series between the power supply busbar and the electric loading device; the motor controller is connected with a main motor, a steering motor and a braking devicein a controlling mode; and the electric loading device includes one or more of a direct current / direct current, electric defrosting, and an air conditioner. According to the electric vehicle and thehigh-voltage circuit system thereof, the motor controller is directly connected with the power battery pack, the high-voltage input end of the motor controller is kept with constant electric so as toensure that electrical accessories related to safety of the vehicle can work at any time, and when a power system fails seriously, a battery management system is operated wrong or a contactor is damaged, the vehicle can be pulled over to ensure driving safety of the vehicle.

Description

technical field [0001] The invention relates to an electric vehicle and its high-voltage circuit system, belonging to the technical field of vehicle power management. Background technique [0002] With the continuous consumption of energy and the continuous deterioration of the world environment, the demand and market retention of new energy vehicles are increasing. The main energy source of new energy vehicles is electric energy, and its electrical control is becoming more and more complicated. Designing a safe and reliable In particular, the high-voltage control circuit that can ensure the safety of the vehicle when the power system fails is of great significance. [0003] The notification number is CN 203713584U. The Chinese patent document discloses a battery cut-off unit of a power battery pack. The battery cut-off unit is connected to the high-voltage interface of the battery and the DC converter, inverter, on-board charger, battery heater, etc. through each contactor ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an electric vehicle and its high-voltage circuit system, which is used to solve the problem that the vehicle has a huge potential safety hazard due to the use of contactor control regardless of the nature of the electric load.

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