Battery charging device and electric vehicle mounting the same

Details Battery charging device and electric vehicle mounting the same Battery charging device and electric vehicle mounting the same

H - Electricity

02

J

H02J 7/00 (2006.01) B60L 11/18 (2006.01)

Patent

CA 2187559

The present invention relates to a battery charging unit. A battery charging unit is provided with a charge controlling unit which is designed to perform at least one of a rest mode operating function which stops charging for respective battery groups. A discharge mode is also provided which discharges electric power from the respective battery groups. In addition a charge mode is provided for the respective battery groups. The battery charging unit controls charging for the respective battery groups through the charge controlling unit while repeating at least two modes including the charging mode among the charging mode, rest mode and discharge mode in a predetermined time cycle and further performs a mutual control between the respective battery groups so that at least one battery group is placed in the rest mode in a predetermined sequence during the operation thereof. As a result, the drawbacks of a conventional pulse type charging and burp charging unit, which are suitable for a quick charging but which requires a large instantaneous charging current which causes the size of the charger to increase are eliminated.

La présente invention concerne un appareil chargeur de batteries. Le chargeur comprend une unité de commande de charge conçue pour exécuter au moins une fonction d'exploitation en mode de repos qui arrête le chargement pour des groupes de batteries respectifs. On a prévu un mode de décharge pour les groupes de batteries respectifs, de même qu'un mode de charge. Le chargeur de batterie commande la charge des groupes de batteries respectifs par l'intermédiaire de l'unité de commande de charge en répétant au moins deux modes, incluant le mode de charge, parmi les modes de charge, de repos et de décharge au cours d'un cycle prédéterminé et exécute un contrôle mutuel entre les groupes de batteries respectifs de manière qu'au moins un groupe de batteries soit placé en mode de repos dans une séquence prédéterminée au cours de son fonctionnement. On élimine ainsi les inconvénients des chargeurs de batteries conventionnels comme ceux du type à impulsions, convenant pour une recharge rapide mais nécessitant un important courant de charge instantané qui oblige à augmenter la taille du chargeur.

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