Battery box system capable of switching multi-voltage-level output and output voltage switching method

Abstract

The invention provides a battery box system capable of switching multi-voltage-level output and an output voltage switching method. The battery box system comprises a plurality of battery modules, a battery module switching unit, a battery management unit, a high-voltage control unit and a battery box connector, wherein the battery modules, the battery module switching unit, the high-voltage control unit and the battery box connector are electrically connected in sequence; the battery management unit is respectively in communication connection with the battery module, the battery module switching unit, the high-voltage control unit and the battery box connector; and the battery management unit is used for carrying out information monitoring and fault processing on the whole battery system and identifying voltage grades of different vehicle types to control the opening and closing states of the switching unit. The battery management system interacts with vehicle information, identifies vehicle types and required voltage, controls the switching state of the battery module switching unit, completes series-parallel connection state conversion of the battery module, and controls output by the high-voltage control unit to realize voltage grade conversion of the battery box, so that the compatibility of the battery box system is improved, and the operation cost of the whole station is reduced.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging and swapping, in particular to a battery box system capable of switching multi-voltage level outputs and an output voltage switching method. Background technique [0002] An electric vehicle (BEV) refers to a vehicle that is powered by a vehicle-mounted power supply, drives the wheels with a motor, and meets the requirements of road traffic and safety regulations. Due to its smaller impact on the environment than traditional cars, its prospects are widely optimistic. Its working principle is to supply power through the battery, so the charging and discharging of the battery is particularly important. [0003] With the continuous expansion of the application scale of electric vehicles and battery replacement in my country, the battery replacement battery box is not uniform for each vehicle, and the supporting battery replacement station can only meet the same voltage level and th...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a battery box system capable of switching multi-voltage level output and output Voltage switching method, which can replace different battery boxes according to different voltage requirements, so as to meet the charging problems of electric vehicles with different voltages

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