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Study on online detecting the battery's capacity

LIU Xian-feng(65043 Troop of Chinese People's Liberation Army,Changchun Jilin 130022)  
The batteries are the last security point in the direct current power supply systems,and online detecting the battery's capacity is an effective measure to guarantee reliable power supply.The offline method is the only method to detect and measure the batteries now.The new approach to measure the internal resistance of batteries by using alternating current four probe method based on the optimum relational grade of capacity and resistance of the batteries is proposed in this paper.The limitation of measurement for fully-charged or nearly fully charged batteries is eliminated,and the real time online detecting and measuring the internal resistance of batteries can be performed.It is a beneficial exploration to change the mode of planned detecting and measuring the direct current power supply system to condition maintenance.
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