A charging control method and system for a vehicle power battery

Abstract

An embodiment of the present invention provides a charging control method and system for a vehicle-mounted power battery, including: sending charging request information to the train control management system, so that the train control management system controls the train to enter the charging area according to the charging request information; Establish a wireless communication connection with the charger control system to send charging request information to the charger control system; after receiving the charging ready information fed back by the train control management system and meeting the charging preset conditions, control the charger control system to control the vehicle power. The battery performs charge control. The charging control method and system provided by the embodiments of the present invention realize the protocol interaction between the vehicle-mounted battery management system and the charger through the vehicle-to-ground wireless communication system, comprehensively control the vehicle-mounted current receiving equipment, and automatically complete charging preparation, charging control, and charging completion, etc. The control objectives of each stage have improved the degree of automation, reduced equipment investment costs, and improved the safety level of charging control.

Description

technical field [0001] The invention relates to the technical field of rail transit, and in particular, to a method and system for controlling the charging of a vehicle power battery. Background technique [0002] At present, the power battery charging control used in the field of rail vehicles is a wired transmission method based on the CAN bus, that is, the on-board battery management system (BMS) realizes information exchange with the ground charger through the CAN bus to control the charging voltage and current. Usually, the CAN bus and the high-voltage charging line are integrated together to form a wiring harness. When the charging line is connected to the vehicle battery charging port, the BMS and the charger realize communication interconnection. [0003] However, the existing lithium battery charging solution for rail vehicles has the following drawbacks: BMS and charger need hard-wired cable connection to communicate and complete charging control, the whole process...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a vehicle-mounted power battery charging control method and system, which is used to solve the defect in the prior art that the BMS and the charger need to be connected by a hard-wired cable, so as to realize automatic charging of the vehicle-mounted lithium battery

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