Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Bubendorff

Institut Polytechnique De Grenoble

Université Joseph Fourier - Grenoble

Ykk Corporation

Bubendorff, Societe Anonyme

Orano

David Brun-Buisson

Sylvie Genies

Pierre Perichon

Antoine Labrunie

Lise Daniel

Henri Zara

Nina Kircheva

Jean-Baptiste Ducros

Adriana Iordache

Sébastien Solan

Pierre-Xavier Thivel

Emmanuel Billy

Mathilde Guilpain

Romain Tessard

Perichon Pierre

The invention relates to a method for regenerating the capacity of an electrochemical lithium battery, including the following steps: a) evaluating the quantity of lithium ions; b) when the evaluated lithium ion quantity is less than or equal to a threshold value, applying an electric current between the cathode or the anode and the container such as to cause the delithiation of the casing, the casing is also arranged to house an element providing both electric insulation and ionic conduction between the anode and cathode electrodes of the electrochemical cell and the casing, said casing including at least one lithium ion storage zone.

Method for regenerating the capacity of an electrochemical lithium battery, and associated battery housing and battery

The present invention relates to a flexible structure () comprising a strain gauge () that is elongate along a longitudinal axis Xand intended to measure the deformation of the flexible structure in a direction X parallel to the axis Xthe strain-gauge support () being bonded to the flexible structure only via the lateral ends () thereof. One particularly targeted application is the bonding of strain tool gauges to the packaging of a flexible lithium battery, such as an Li-ion battery.

Flexible structure with strain gauge, application to electrochemical lithium-ion batteries in a flexible packaging

Method for monitoring an electrochemical cell or a battery (), in particular method for monitoring the first charging of an electrochemical cell or of a battery () of Li-ion type, comprising a step of acquiring data relating to acoustic emissions produced in the electrochemical cell or in the battery and, by using the data acquired, a step of detecting:

Method for monitoring a Li-ion battery and monitoring device for the implementation thereof

Method for managing a battery comprising several accumulators that can be linked in series or in parallel, comprising a charging or discharging phase during which the accumulators are disposed in series, characterized in that it thereafter comprises a balancing phase comprising the placing of the accumulators in parallel, during which an electrical quantity Grepresenting the balancing of the accumulator that has attained the maximum voltage during the charging phase or minimum voltage during the discharging phase is measured or estimated, and during which an electrical quantity Grepresenting the balancing of another accumulator i of the battery is also measured or estimated, and in that the state of health SOHof this other accumulator i is computed on the basis of the two electrical quantities Gand Gand on the basis of the knowledge of the performance of the accumulator i at the start of life.

Method for battery management and diagnosis

The method for charging an electrochemical nickel-based battery having a predetermined nominal capacity, including at least one measurement of the voltage of the battery and one measurement of the temperature representative of the battery. The battery is connected to an intermittent source of energy. The charging of the battery is stopped when the voltage measured at the terminals of the battery reaches a voltage threshold, depending on the measured temperature and representative of a capacity charged in the battery corresponding to a charging efficiency equal to or higher than 90% of the maximum charging efficiency.

Method for charging and method for determining an end-of-charge criterion of a nickel-based battery

A method for using a stand-alone system, provided with an actuator connected to a battery, comprises during a discharging phase of the battery at a predetermined current the measurement of a temperature representative of the battery temperature and the determination of a first voltage threshold depending upon the measured temperature. Then, a voltage is measured at the battery terminals. An operating mode, selected at least between a normal and deteriorated mode, is determined, said stand-alone system being in the normal operating mode when the measured voltage is higher than the first voltage threshold, and in the deteriorated operating mode when the measured voltage is lower that the first voltage threshold, the current provided by the battery during an actuation being reduced when going from the normal mode to the deteriorated mode.

Method for using a stand-alone system connected to a battery

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Vatilieu, France

David Brun-Buisson