Importance

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Abstract

The Invention relates to a battery pack type device including:

a)—a plurality of energy storage elements in series, each associated with at least one switch to connect it in series or disconnect it and/or to short-circuit it;b)—at least one switch (20) for establishing a short-circuit between a first terminal (101) and a second terminal (102) of the battery when the latter is disconnected or supplies a zero voltage;c) a control circuit (30), specifically adapted to: select at least one first energy storage element in a first state-of-charge or at least one second energy storage element in a second state-of-charge and to make a current circulate from the first element to the second element when the first terminal (101) and the second terminal (102) of the device are short-circuited;stop the current when at least one of the parameters of the first element selected from among the charge, the voltage, the state-of-health, the temperature, the impedance has a value equal to that of the same parameter for the second element or to an average value of this same parameter for at least one portion of the elements.

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First Claim