Renault S.a.s.

Philippe Toussaint

Do-Hieu Trinh

Yann Chazal

Cedric Chantrel

Fehd Ben-Aicha

Mathieu Umlawski

The invention relates to a method and a system for allocating a power request Pto a plurality of batteries connected in parallel in an electrical energy storage system. According to the invention, the allocation system comprises a global control system that can determine a combination of batteries from said plurality of batteries, which is optimized to respond to the power request using the highest possible number of batteries, and allocate a power level to each of the batteries of said optimized combination.

Method and system for allocating a power request to a plurality of batteries connected in parallel

A method detects defects in an electrical power storage system including at least one battery. The method includes applying an instruction for charging or discharging the battery. The method also includes measuring the current passing through the battery during application of the instruction and calculating m&#xd7;n mean errors (eTj(tij))1&#x2264;j&#x2264;m, 1&#x2264;i&#x2264;n between the measured current and the theoretical current of the instruction in m&#xd7;n time intervals ([tij, tij+Tj])1&#x2264;j&#x2264;m, 1&#x2264;i&#x2264;n, respectively. The method also includes calculating, for each j between 1 and m, ej=max(eTj (tij)), where i=1, . . . , n. Lastly, the method includes incrementing a counter Cj if ej completely or partially exceeds a predetermined threshold. A defect is detected if Cj exceeds a predetermined threshold.

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Versailles, France

Philippe Toussaint