Saft

Nathalie Legrand

Sebastien Benjamin

Sebastien Laurent

Cedric Gousset

The invention relates to a method for determining the value of one or more parameters relating to the state of health of at least one accumulator of a battery that is intended to provide electrical energy to an external application. A first state-of-health parameter related to the resistance of at least one electrochemical element of the battery is determined according to the method comprising: —a step (1) of determining the value of the state of charge of the electrochemical element, expressed as a percentage of a maximum state of charge; —a step (2) of verifying whether the determined value of the state of charge belongs to a sought range; —a step of repeating, as long as the result of the verification step (2) is not positive, the determination step (1) and then the verification step (2); —calculating the value of the first parameter as a function of at least the value of the state of charge determined during the last determination step (1).

Method for determining the value of a parameter related to the state of health of an electrochemical cell in a battery, system for electronic management of a battery, and corresponding battery

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BURGES, France

Nathalie Legrand