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Method for charging management of emergent blade-changing battery pack of wind driven generator

A technology for wind turbines and charging management, which is used in secondary battery charging/discharging, measuring electrical variables, and secondary battery repair/maintenance. Balance and other issues to achieve the effect of power balance, improve stability and reliability, and prolong service life

Active Publication Date: 2011-08-17
XEMC WINDPOWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this charging method, the charging voltage is only for the entire battery pack, without considering the performance of individual batteries and the imbalance of discharge capacity. Therefore, this charging method has a negative impact on the life of a single battery.

Method used

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  • Method for charging management of emergent blade-changing battery pack of wind driven generator
  • Method for charging management of emergent blade-changing battery pack of wind driven generator
  • Method for charging management of emergent blade-changing battery pack of wind driven generator

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Experimental program
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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] refer to figure 1 , after starting, first perform step 101 single battery voltage detection (for the detection method, see figure 2 ), and then go to step 102 to record all battery voltages and sort them by size. This process records the output voltage data of each battery detected and sorts them by voltage size; then proceed to step 103 to judge that the voltage is less than 30%. This process judges the output Whether there is a battery whose voltage is lower than 30% of the rated voltage, if yes, it means that the battery is faulty, go to step 105, a battery damage alarm is issued, and the battery needs to be replaced at this time; if no, then go to step 104, select a rechargeable battery , that is, compare the voltages of all batteries, and select the battery with the lowest voltage as the priority charging battery; then, enter step 106, tha...

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PUM

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Abstract

The invention relates to a method for charging management of an emergent blade-changing battery pack of a wind driven generator. The method comprises the following steps of: (1) detecting battery power, recording output voltage data of each battery, and sequencing battery voltage; (2) judging whether the battery of which the output voltage is lower than 30 percent of rated voltage exists, if so, executing a battery damage alarm procedure, otherwise, comparing voltage of all batteries and selecting the batteries with the lowest voltage as preferred rechargeable batteries; (3) judging the voltage of selected rechargeable batteries and selecting charging methods for charging; (4) if the batteries are used during charging, immediately stopping charging; and (5), performing floating charging on batteries in a fixed cycle after all batteries are charged. By the method, the balance of power of each single battery in the battery pack during charging can be effectively guaranteed and the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to a control method for power electronic equipment, in particular to a charging management method for a pitch-pitch battery pack of a wind power generating set, which is used for low-voltage charging control and management of the battery pack. Background technique [0002] The traditional battery pack charging method is often to design chargers with different voltages according to the number of battery packs to charge the entire battery pack as a whole. . In this charging method, the charging voltage is only for the entire battery pack, without considering the performance of individual batteries and the imbalance of discharge capacity. Therefore, this charging method has a negative impact on the life of a single battery. [0003] Inside the wind turbine, the emergency pitch battery pack is a key component for the pitch change after the wind turbine is shut down due to a major failure, and it provides power for the pitch change. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/44G01R31/36
CPCY02E60/12Y02E60/10
Inventor 邓琛熊弦
Owner XEMC WINDPOWER CO LTD
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