Charging method and charging management system of lead-acid battery pack for wind turbine generator system

Abstract

The invention discloses a charging method and a charging management system of a lead-acid battery pack for a wind turbine generator system, wherein the charging method is as follows: detecting whether the voltage of a single battery is less than 60% or not, if yes, prompting fault, otherwise detecting whether the voltage is less than 90% or not again, if yes, charging, otherwise jumping to a next single battery to continue detecting; detecting whether the voltage of the single battery is less than 100% or not, if yes, charging until reaching to 100%, then switching to constant-voltage charging, otherwise directly switching to a constant-voltage charging mode; judging whether the single battery charging process of the battery is finished or not, if yes, switching to judge the next single battery, otherwise, continuing constant-voltage charging; after the boost charge stage of each single battery in a battery pack finished, starting voltage detection and corresponding supplementary procedures every half an hour. The charging method and charging management system of a lead-acid battery pack for a wind turbine generator system provided by the invention can be used for shortening the charging time of the battery pack, avoiding the polarization phenomenon of the battery, repairing a part of slightly damaged lead-acid batteries, and prolonging the service life of the lead-acid battery pack.

Description

technical field [0001] The invention relates to a charging management system and a charging method for a lead-acid battery pack, in particular to a charging method and a charging management system for a lead-acid battery pack used in a wind power generating set. Background technique [0002] Wind energy is an important part of new energy, and wind resources are very rich, with broad prospects for development and application. With the improvement of wind power generation technology, the single unit capacity of wind turbines is also increasing, and the control system of wind turbines is the brain of wind turbines, which not only undertakes the task of safe operation of wind turbines, but also The control method and control strategy realize the maximum wind energy capture. Pitch control is to control the blade pitch angle reasonably. When operating below the rated wind speed, combined with variable speed and constant frequency technology, it can obtain energy to the maximum; w...

AI Technical Summary

Problems solved by technology

Due to the inconsistency of the lead-acid battery itself and the characteristics of the internal structure, the existing charging method of the lead-acid battery pack cannot realize fast charging and balanced charging, which shortens the life of the entire battery pack and is not conducive to the safe and stable operation of the entire wind power generation system.

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