Renault S.a.s.

Bouygues Energies Et Services

Do-Hieu Trinh

Yann Chazal

Philippe Toussaint

Antoine Saint-Marcoux

Yves Le Vourch

Thomas Peuchant

Cedric Chantrel

Mathieu Umlawski

Brice Fourney

Fabrice Clin

Fehd Ben-Aicha

Cédric Chantrel

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.

Method for diagnosing defects in a set of stationary batteries

An electrical power supply system includes a battery of cells, the battery including an ammeter configured to measure battery current flowing through the battery, and at least one voltage sensor configured to measure voltage at terminals of a cell. An electronic control unit is configured to deliver a maximum permissible electrical power setpoint. The control unit is configured to calculate a maximum permissible electrical power associated with a cell by taking the minimum of at least two values, including a first electrical power and a second electrical power.

System for managing the charging of a battery and the regenerative braking of a vehicle at least partially powered by the battery and associated regulation method

A system of electric batteries includes a plurality of batteries (HVB, HVB, HVB) connected to each other by two polarities. Each battery has at least two relays (RN, RP, RA) for the connecting of poles of the battery to the two polarities. The system includes a secondary power supply to provide an activation energy to the relays. The system includes means of supervision to control the relays (RN, RP, RA) in a staggered manner so that each activation of a relay follows a previous activation by at least a predetermined time period (DT).

System of batteries and method of controlling this system

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Fontenay le Fleury, France

Do-Hieu Trinh