Temperature-based charge and discharge control for a battery

Details Temperature-based charge and discharge control for a battery Temperature-based charge and discharge control for a battery

H - Electricity

01

M

H01M 10/50 (2006.01) H01M 2/10 (2006.01) H01M 2/34 (2006.01) H02H 7/18 (2006.01) H02J 7/00 (2006.01)

Patent

CA 2594608

A protection circuit for a battery pack, comprising: a thermistor for indicating a temperature of a cell in the battery pack; a first comparator coupled to the thermistor for determining whether the temperature has exceeded a charge cut-off temperature threshold for the cell, and if so, for turning off a first switch in series with the cell to prevent charging of the cell; and, a second comparator coupled to the thermistor for determining whether the temperature has exceeded a discharge cut-off temperature threshold for the cell, and if so, for turning off a second switch in series with the cell to prevent discharging of the cell.

Un circuit de protection pour bloc-piles, comprenant : une thermistance pour l'indication de la température d'un élément de batterie; un premier comparateur, raccordé à la thermistance, pour déterminer si la température excède le seuil de température de coupure de charge fixé pour l'élément; lorsque c'est le cas, il y a fermeture d'un premier interrupteur en série de l'élément pour éviter sa charge; et un second comparateur raccordé à la thermistance pour déterminer si la température excède le seuil de la température de coupure de la décharge fixé de l'élément; lorsque c'est le cas, il y a fermeture d'un second interrupteur en série de l'élément pour éviter sa décharge.

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