Abstract: A system for protecting a device having variable internal resistance includes a protection fuse capable of blowing when a current having an intensity greater than an intensity threshold passes through. The system also includes an estimator suitable for estimating the internal resistance of the device, and a safety device suitable for limiting and/or preventing use of the device when the internal resistance is greater than a resistance threshold beyond which the protection fuse is inoperative.

Abstract: A method for estimating a state of health of an electrochemical cell for storing electrical energy includes applying at least one current strength peak to the cell, the current peak passing through the cell, measuring a variation, as a function of a time t elapsed after the application of the current peak, of voltage U at the terminals of the cell, and calculating at least one coefficient ?I1 and at least one coefficient U0,I1 such that the function ?{square root over (t)}??I1×?{square root over (t)}+U0,I1 is a linear approximation of the variation of the voltage U as a function of ?{square root over (t)} for ?{square root over (t)}?C, where C>0. The method is used in electrical or hybrid vehicles.

Abstract: A system and method estimates the state of charge of a battery comprising at least two modules each provided with at least one cell. A sensor senses a series current flowing through all cells of the modules connected in series. A switching device selectively disconnects one of the modules, the other modules remaining connected in series. A calculator calculates the state of charge of the cells through which the series current flows from the integration of the series current and calculates the state of charge of each of the cells of the disconnected module from an open circuit voltage thereof.

Abstract: A method estimates a duration of a battery performance rehabilitation phase. The method includes activating the battery performance rehabilitation phase when a power available in a battery is below a required minimum power level. The method also includes supplying a model of operation of the battery including, in a plane (BSOC, T) where BSOC denotes a state of charge of the battery and where T denotes a battery temperature, an isopower curve representing operating points of the battery enabling the battery to substantially deliver the required minimum power level, the curve separating operating points making it possible to deliver a power level above the required minimum power level from operating points enabling the battery to deliver only a power level below the required minimum power level. The method also includes estimating the duration of the battery performance rehabilitation phase from the model of operation supplied.

Abstract: 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.

Abstract: A method for managing an authorized operating range of a battery, the authorized operating range being limited between a minimum level and a maximum level of state of charge of the battery. The method includes estimating a state of health in power of the battery, the state of health in power characterizing capacity of the battery to supply a minimum required power level across an entirety of the operating range; and determining the minimum level of state of charge of the battery in accordance with the estimated state of health in power, the minimum level of state of charge being increased when the state of health in power decreases.

Abstract: A method manages a state of charge of a traction battery of a rechargeable hybrid vehicle including a hybrid power train to provide propulsion. The battery being capable of operating according to a first operating mode over a state of charge range, of which an amplitude is bounded by predefined maximum and minimum state of charge values, in which the battery supplies substantially all power necessary for propulsion, and a second operating mode, in which the state of charge of the battery is kept substantially constantly around an equilibrium state of charge value. The method includes estimating an ageing state of the battery, comparing the estimated ageing state of the battery in relation to a given ageing state threshold, and reducing the amplitude of the state of charge range linked to the first operating mode when the ageing state of the battery rises above the given ageing state threshold.

Abstract: A method for managing an electrochemical accumulator or a storage battery includes determining an estimated value of a state of deterioration of the accumulator from the accumulator's history of voltage values, intensity of current flow, and temperature. The estimated value is a barycentric value of the state of deterioration calculated as a barycenter of at least two values. The at least two values include a first value indicative of the state of deterioration of the accumulator calculated by a first method and a second value indicative of the state of deterioration of the accumulator calculated by a second method different from the first method. From an initial commissioning state of the accumulator, barycentric coefficients are varied at least once to calculate the next barycentric value when a previous value of the state of deterioration of the accumulator, calculated according to the first method, has passed a first threshold.

Abstract: A method for managing the charge of a battery comprising: control of a rapid charging phase at increasing voltage, followed by control of an absorption phase at decreasing current regulated to a first voltage value, and in which the rapid charging phase is controlled until the voltage at the terminals of the battery reaches a second voltage value that is strictly higher than the first voltage value.

Abstract: Disclosed herein is an invention concerning a method for managing charging of a Li-ion battery based on at least one parameter chosen from a group consisting of a state of deterioration of the Li-ion battery and cell unbalance, the method comprising the following steps: a) determining an end-of-charge voltage value of said Li-ion battery, b) generating a control signal controlling the charging of said Li-ion battery, and c) transmitting the control signal to a charger, the control signal being generated in such a way that the Li-ion battery is charged based on the end-of-charge voltage value determined in step a), said end-of-charge voltage value being increased based on the state of deterioration of said Li-ion battery until a limit value is reached, in order to ensure a constant minimal level of required energy in said Li-ion battery is provided at a predetermined reference temperature.

Abstract: The invention relates to a system for managing the charging of at least one cell of a storage battery, comprising: two separate means for comparing the voltage across the terminals of said cell with a threshold voltage; and two separate controlling means adapted to control two actuators, respectively, in order to interrupt the charging of the storage battery when said first or second comparing means detects that the voltage across the terminals of said cell exceeds the threshold voltage. One of the actuators is formed by a charger that is connected to said storage battery in order to recharge said cells.

Abstract: Disclosed herein is an invention concerning a method for managing charging of a Li-ion battery based on at least one parameter chosen from a group consisting of a state of deterioration of the Li-ion battery and cell unbalance, the method comprising the following steps: determining an end-of-charge voltage value of said Li-ion battery, generating a control signal controlling the charging of said Li-ion battery, and transmitting the control signal to a charger, the control signal being generated in such a way that the Li-ion battery is charged based on the end-of-charge voltage value determined in step a), said end-of-charge voltage value being increased based on the state of deterioration of said Li-ion battery until a limit value is reached, in order to ensure a constant minimal level of required energy in said Li-ion battery is provided at a predetermined reference temperature.

Abstract: A method manages a state of charge of a traction battery of a rechargeable hybrid vehicle including a hybrid power train to provide propulsion. The battery being capable of operating according to a first operating mode over a state of charge range, of which an amplitude is bounded by predefined maximum and minimum state of charge values, in which the battery supplies substantially all power necessary for propulsion, and a second operating mode, in which the state of charge of the battery is kept substantially constantly around an equilibrium state of charge value. The method includes estimating an ageing state of the battery, comparing the estimated ageing state of the battery in relation to a given ageing state threshold, and reducing the amplitude of the state of charge range linked to the first operating mode when the ageing state of the battery rises above the given ageing state threshold.

Abstract: A method for managing an authorized operating range of a battery, the authorized operating range being limited between a minimum level and a maximum level of state of charge of the battery. The method includes estimating a state of health in power of the battery, the state of health in power characterizing capacity of the battery to supply a minimum required power level across an entirety of the operating range; and determining the minimum level of state of charge of the battery in accordance with the estimated state of health in power, the minimum level of state of charge being increased when the state of health in power decreases.

Abstract: A method estimates a duration of a battery performance rehabilitation phase. The method includes activating the battery performance rehabilitation phase when a power available in a battery is below a required minimum power level. The method also includes supplying a model of operation of the battery including, in a plane (BSOC, T) where BSOC denotes a state of charge of the battery and where T denotes a battery temperature, an isopower curve representing operating points of the battery enabling the battery to substantially deliver the required minimum power level, the curve separating operating points making it possible to deliver a power level above the required minimum power level from operating points enabling the battery to deliver only a power level below the required minimum power level. The method also includes estimating the duration of the battery performance rehabilitation phase from the model of operation supplied.

Abstract: A method for managing charging of a rechargeable battery including at least one module including at least one electrochemical cell, the method including estimating a heat flow produced in the at least one module using an observer estimating overall internal resistance of the electrochemical cells of the module.

Abstract: An automotive vehicle with electric or hybrid propulsion including a rechargeable electric accumulation battery and a braking system allowing recovery of energy, the battery being rechargeable during braking phases and during charging phases under control of a supply system including a mechanism determining a maximum allowable power for the battery. The mechanism determining the maximum allowable power for the battery includes a first mapping making it possible to read a first maximum power on the basis of a temperature and of a state of charge of the battery, and a second mapping making it possible to read a second maximum power based on the temperature and of the state of charge of the battery.

Abstract: A method for managing an electrochemical accumulator or a storage battery includes determining an estimated value of a state of deterioration of the accumulator from the accumulator's history of voltage values, intensity of current flow, and temperature. The estimated value is a barycentric value of the state of deterioration calculated as a barycenter of at least two values. The at least two values include a first value indicative of the state of deterioration of the accumulator calculated by a first method and a second value indicative of the state of deterioration of the accumulator calculated by a second method different from the first method. From an initial commissioning state of the accumulator, barycentric coefficients are varied at least once to calculate the next barycentric value when a previous value of the state of deterioration of the accumulator, calculated according to the first method, has passed a first threshold.

Abstract: A method for estimating a state of health of an electrochemical cell for storing electrical energy includes applying at least one current strength peak to the cell, the current peak passing through the cell, measuring a variation, as a function of a time t elapsed after the application of the current peak, of voltage U at the terminals of the cell, and calculating at least one coefficient ?I1 and at least one coefficient U0,I1 such that the function ?{square root over (t)}??I1×?{square root over (t)}+U0,I1 is a linear approximation of the variation of the voltage U as a function of ?{square root over (t)} for ?{square root over (t)}?C, where C>0. The method is used in electrical or hybrid vehicles.

Abstract: The invention concerns a method for managing the charging of an Li-ion battery on the basis of at least one parameter chosen from the group consisting of the deterioration of the battery and cell imbalance, comprising the following steps of receiving a signal determining the end-of-charge voltage value of said battery, of generating a control signal controlling the charging of said battery, and of transmitting the control signal to a charger, the control signal being generated such that the battery is charged on the basis of the end-of-charge voltage value determined in step a), said end-of-charge voltage value being increased on the basis of the state of deterioration of said Li-ion battery until a limit value is reached, in order to ensure a constant minimal level of required energy in said Li-ion battery, for a predetermined reference temperature.