Abstract: 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.

Abstract: The present invention relates to a flexible structure (6) comprising a strain gauge (7) that is elongate along a longitudinal axis X1, and intended to measure the deformation of the flexible structure in a direction X parallel to the axis X1, the strain-gauge support (71) being bonded to the flexible structure only via the lateral ends (75, 76) 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.

Abstract: A method recalibrates in situ a comparison electrode integrated into an electrochemical system. The electrochemical system includes a working electrode, a counter electrode, and an electrolyte. The method includes verifying a potential of the comparison electrode relative to the working electrode or to the counter electrode in situ, detecting whether there is a drift in the potential of the comparison electrode relative to a potential plateau for which the comparison electrode was functionalized or designed, and when the drift is detected, recalibrating the comparison electrode in situ.

Abstract: A device for managing an accumulator, including: a plurality of strain gauges including at least three strain gauges, the strain gauges being arranged to measure stresses along at least three distinct stress axes; a measuring device measuring strains undergone by each gauge along its stress axis; a reversible electrical switch; a calculating device controlling opening and closing of the electrical switch, depending on measurements carried out by the measuring device.

Abstract: Method for monitoring an electrochemical cell or a battery (1), in particular method for monitoring the first charging of an electrochemical cell or of a battery (1) 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: the formation of a passivation film on an electrode of the electrochemical cell or of the battery; and/or the first storage of lithium in an electrode of the electrochemical cell or of the battery.

Abstract: The present invention relates to a flexible structure (6) comprising a strain gauge (7) that is elongate along a longitudinal axis X1, and intended to measure the deformation of the flexible structure in a direction X parallel to the axis X1, the strain-gauge support (71) being bonded to the flexible structure only via the lateral ends (75, 76) 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.

Abstract: Method for determining the state of health of a battery, using a sensor of the acoustic activity of the battery, comprising the following steps: detection of at least one acoustic event by the sensor; determination of the value of at least one parameter for each acoustic signal detected in the course of the elementary cycle of use; calculation, for the elementary cycle of use, of a value of acoustic density according to a density calculation function taking into account said at least one parameter determined for each of the acoustic signals detected in the course of the cycle; calculation of a state of health value corresponding to said previously calculated acoustic density value, on the basis of a functional relation or a predetermined database, making it possible to know the state of health for a given acoustic density value.

Abstract: Method for managing the recharging of at least one battery, characterized in that it comprises a transmission of a desired charge level (Ci) for a battery (i) at a given instant (Ti) such that the recharging enables the battery (i) to reach a charge level (C(i)) greater than or equal to the desired charge level (Ci) at the given instant.

Abstract: The process for charging a lead battery comprises an initialisation phase (E1), during which a value representative of an amount of lead oxide of the negative active material of the battery is determined, and a charging phase (E2), the duration of which is determined as a function of the value representative of amount of lead oxide.

Abstract: The method for charging or discharging a battery comprises measurement of the voltage at the terminals of the battery and comparison of the measured voltage with an end of charging or discharging voltage threshold. The method also comprises measurement of a temperature representative of the temperature of the battery and measurement of the current flowing in the battery to form a pair of measurements. The voltage threshold is then determined according to the pair of measurements. Charging or discharging of the battery is stopped when the voltage threshold is reached.

Abstract: Method for monitoring an electrochemical cell or a battery (1), in particular method for monitoring the first charging of an electrochemical cell or of a battery (1) 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: the formation of a passivation film on an electrode of the electrochemical cell or of the battery; and/or the first storage of lithium in an electrode of the electrochemical cell or of the battery.

Abstract: A photovoltaic system including: one photovoltaic panel including a face configured to receive light rays, one battery mechanically connected to the photovoltaic panel by a retaining structure, and one space which is opened onto the environment external to the photovoltaic system forming an air layer separating the battery and the photovoltaic panel and including a thickness at least equal to approximately 1 cm. The ratio between the thickness of the photovoltaic system and a dimension of one side of the face of the photovoltaic panel is less than or equal to approximately ?.

Abstract: The diagnostic method applies to a standalone system including a generator, a power regulator and a power storage element. The method includes comparison of the effective charging power or current of the power storage element respectively with a predefined power or current threshold. If the effective charging power or current is lower than said threshold, the power storage element is disconnected. An abnormal behavior is then detected either by comparing the effective charging power with the smaller of the values representative of the theoretical charging power of the power storage element and of the maximum power able to be delivered by the generator and comparing the effective and theoretical charging voltages, or by comparing the effective and theoretical charging currents.

Abstract: The method for charging or discharging a battery comprises measurement of the voltage at the terminals of the battery and comparison of the measured voltage with an end of charging or discharging voltage threshold. The method also comprises measurement of a temperature representative of the temperature of the battery and measurement of the current flowing in the battery to form a pair of measurements. The voltage threshold is then determined according to the pair of measurements. Charging or discharging of the battery is stopped when the voltage threshold is reached.

Abstract: Method for managing the recharging of at least one battery, characterized in that it comprises a transmission of a desired charge level (Ci) for a battery (i) at a given instant (Ti) such that the recharging enables the battery (i) to reach a charge level (C(i)) greater than or equal to the desired charge level (Ci) at the given instant.

Abstract: The autonomous system comprises an intermittent power source delivering a direct current. A supercapacitance is connected in parallel with the battery and the power source respectively via a first switch and a second switch. Charging of the battery comprises pulsed current charging managed by a control circuit. During a current pulse, the amplitude of the current and the amplitude of the voltage increase at the terminals of the battery are measured. The dynamic internal resistance of the battery is determined from said amplitudes. A maximum acceptable current threshold is determined according to a maximum voltage threshold, to said dynamic internal resistance and to the no-load voltage at the battery terminals. At the next current pulse, the value of the charging current is limited by controlling the closing time of the second switch.

Abstract: A photovoltaic system including: one photovoltaic panel including a face configured to receive light rays, one battery mechanically connected to the photovoltaic panel by a retaining structure, and one space which is opened onto the environment external to the photovoltaic system forming an air layer separating the battery and the photovoltaic panel and including a thickness at least equal to approximately 1 cm. The ratio between the thickness of the photovoltaic system and a dimension of one side of the face of the photovoltaic panel is less than or equal to approximately 1/5.

Abstract: The diagnostic method applies to a standalone system including a generator, a power regulator and a power storage element. The method includes comparison of the effective charging power or current of the power storage element respectively with a predefined power or current threshold. If the effective charging power or current is lower than said threshold, the power storage element is disconnected. An abnormal behavior is then detected either by comparing the effective charging power with the smaller of the values representative of the theoretical charging power of the power storage element and of the maximum power able to be delivered by the generator and comparing the effective and theoretical charging voltages, or by comparing the effective and theoretical charging currents.

Abstract: The autonomous system comprises an intermittent power source delivering a direct current. A supercapacitance is connected in parallel with the battery and the power source respectively via a first switch and a second switch. Charging of the battery comprises pulsed current charging managed by a control circuit. During a current pulse, the amplitude of the current and the amplitude of the voltage increase at the terminals of the battery are measured. The dynamic internal resistance of the battery is determined from said amplitudes. A maximum acceptable current threshold is determined according to a maximum voltage threshold, to said dynamic internal resistance and to the no-load voltage at the battery terminals. At the next current pulse, the value of the charging current is limited by controlling the closing time of the second switch.

Abstract: In an autonomous system, the method for charging a power storage element from a generator comprises temperature measurement, with switching from a first charging mode to a second charging mode in which the voltage is regulated by the temperature. The first charging mode is charging at regulated current to a maximum current value which is a function of the state of charge of the power storage element and of the temperature of the power storage element. Switching is performed when the voltage at the terminals of the power storage element reaches a preset threshold value, itself a function of the value of the current and temperature of the power storage element.