Secondary battery system

H - Electricity – 01 – M

Patent

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Details

H01M 10/48 (2006.01) H01M 4/58 (2010.01) H01M 10/36 (2010.01) H02J 7/00 (2006.01)

Patent

CA 2720136

Provided is a secondary battery system which can accurately detect a state of a secondary battery system (such as a secondary battery state and a secondary battery system failure). The secondary battery system (6) includes dV/dQ calculation means which calculates a dV/dQ value as a ratio of a change amount dV of a battery voltage V of a secondary battery (100) against a change amount dQ of an accumulation amount Q when the accumulation amount Q of the secondary battery (100) is changed. The secondary battery system (6) detects the state of the secondary battery system (6) by using the dV/dQ value.

L'invention concerne un système d'accumulateur qui peut détecter avec précision un état d'un système d'accumulateur (tel qu'un état d'accumulateur et une défaillance de système d'accumulateur). Le système d'accumulateur (6) comprend des moyens de calcul de dV/dQ qui calculent une valeur de dV/dQ en tant que rapport entre une quantité de variation dV d'une tension d'élément V d'un accumulateur (100) et une quantité de variation dQ d'une quantité d'accumulation Q lorsque la quantité d'accumulation Q de l'accumulateur (100) est modifiée. Le système d'accumulateur (6) détecte l'état du système d'accumulateur (6) à l'aide de la valeur dV/dQ.

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