Dynamic charge current adjusting method and its application in high effective solar-lion battery system

doi:10.7523/j.issn.1002-1175.2013.03.013

Abstract

Abstract:

We propose a dynamic charge current adjusting method and have used it in solar panel-lithium battery charging system. A digital potentiometer controlled dynamically by a low power MCU is used to set the maximum charging current to LiFePO₄ from charging circuit. The method ensures effective implementation of the solar maximum power tracking (MPPT) and of the battery protection when low voltage or full charged.The test results show that the MPPT efficiency is up to 98.5%, the power conversion efficiency is up to 93.5%, and the maximum charge current is 3.96 A.

Key words: dynamic charge current control, MPPT, LiFePO₄ battery

CLC Number:

TM912.9

YANG Yong-You, YI Wei-Dong, JWO Ko-Wen. Dynamic charge current adjusting method and its application in high effective solar-lion battery system[J]. , 2013, 30(3): 361-367.

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