Charging device and charging system

Details Charging device and charging system Charging device and charging system

H - Electricity

02

J

H02J 7/00 (2006.01) H01M 10/44 (2006.01)

Patent

CA 2197462

A high-speed secondary cell charging system is provided which accurately measures the amount of time to achieve a full-charge condition in a secondary cell. In this system, when charging a secondary cell while detecting a charging characteristic of the secondary cell, charging is performed of the secondary cell using a prescribed amount of charging current. Then, when a prescribed condition with regard to the secondary cell is detected, the secondary cell is charged once again, this time with a current that is smaller than the previous charging current. When a condition indicating the completion of the charging of the secondary cell is detected, the charging is stopped. If this condition is not detected, a yet smaller charging current is set and the charging of the secondary cell is performed once again, the above operations being repeated until a condition which indicates that the charging of the secondary cell is complete is detected.

On décrit un dispositif de charge très rapide qui détecte de manière précise l'état de charge totale d'un accumulateur et conserve celui-ci dans cet état. Lorsque s'effectue la première charge de cet accumulateur à l'aide d'un courant déterminé, les caractéristiques de charge sont contrôlées. Sur détection d'un état déterminé de cet accumulateur, la charge se poursuit à l'aide d'un courant inférieur. Sur détection de l'état représentant l'achèvement de la charge de cet accumulateur, l'opération de charge est stoppée. Toutefois, si un état déterminé de l'état secondaire est encore détecté au lieu de l'état d'achèvement, la charge se poursuit avec un courant encore inférieur, et ces opérations sont répétées jusqu'à détection de l'état représentant l'achèvement de la charge.

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