High voltage distribution method of electric logistic vehicle

Abstract

The invention discloses a high voltage distribution method of an electric logistic vehicle. The electric logistic vehicle comprises a high-voltage compartment, a fuse, a contactor, a pre-charging resistor, a discharging circuit and a hall current sensor are mounted inside the high-voltage compartment, the high-voltage compartment is provided with an input node, a charging interface and a high-voltage electric appliance output interface, the input node is connected with a battery box, the charging interface is connected with an on-board charger and a direct-current charger, and the high-voltage electric appliance output interface is connected with a three-in-one power supply, a PTC (pitch trim compensator), an air conditioner and a motor controller. A high-voltage electric appliance forms a loop by the aid of a cable or copper bar, the fuse protects the circuit, the contactor controls high current by low current, the discharging circuit rapidly discharges after a motor stops, the hall current sensor measures the working current of a power battery in real time, and an alarm is given when the current is abnormal. A relay is reasonably arranged, the capacity of the fuse is correctly selected, the positional relation between the fuse and the relay is specified, high-voltage electric parts are reasonably and effectively arranged in the circuit, variable circuits are decreased, and high voltage distribution of the electric logistic vehicle is standardized.

Description

technical field [0001] The invention relates to a high-voltage power distribution method for an electric logistics vehicle, belonging to the technical field of electric vehicle manufacturing. Background technique [0002] With the increasingly serious air pollution and energy crisis, new energy vehicles have become a research hotspot at home and abroad. Driven by the rapid development of e-commerce, my country's e-commerce logistics continues to maintain rapid growth, and van logistics vehicles have become the largest product in demand for special vehicles. Logistics vehicles have relatively fixed driving routes, low requirements for mileage, and frequent use. Higher features, more matching with the characteristics of pure electric logistics vehicles. However, at this stage, there are unreasonable phenomena in the design voltage distribution of electric logistics vehicles. The more common ones are: more relays, less relays, non-standard selection of fuses, and whether the el...

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