H - Electricity – 02 – J
Patent
H - Electricity
02
J
H02J 7/10 (2006.01) H02J 7/00 (2006.01)
Patent
CA 2144336
A charger for rechargeable cells or batteries utilizes a mechanism whereby resistance-free voltage is continually monitored during periodic current-off intervals in the charging process and compared to an independent reference voltage to prevent over-charge. After a certain degree of charge has been obtained, the current is gradually reduced to a finishing charge. Several means are provided for terminating the finishing charge while avoiding overcharge. Another embodiment of a charger provides for measurement of the resistance-free voltage during the current-off period after sufficient time is allowed for the recombination of any oxygen which may have been produced during charging, thus taking into account inherent variations in cells of the same type.
Cette invention concerne un chargeur de cellules ou batteries rechargeables doté d'un mécanisme de contrôle continu de la tension en circuit ouvert durant les intervalles périodiques d'interruption du courant en cours de charge et de comparaison à une tension de référence indépendante afin de prévenir la surcharge. Après un certain degré de recharge, le courant est réduit graduellement à une valeur de fin de charge. Plusieurs moyens sont prévus pour l'interruption de la charge de finition avant surcharge. Une autre variante de l'invention permet de mesurer la tension en circuit ouvert durant les intervalles de coupure après laissé un temps suffisant pour la recombinaison de l'oxygène susceptible de s'être formé en période de charge, afin de pouvoir tenir compte des variations inévitables entre cellules du même type.
Ettel Victor Alexander
Nor Jiri K.
Soltys Josef V.
Edison Source
Inco Limited
Smart & Biggar
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