Abstract: A housing for a battery includes an envelope and at least one rupture device provided with a rupture cap. The rupture device is mounted at the location of an opening formed in the envelope. The rupture cap breaks when an excess pressure is exerted on its outer surface situated on the outer side of the housing.

Abstract: An electrochemical pouch cell is for an electrical energy storage device, in particular intended for a motor vehicle. The electrochemical cell includes a stack of a plurality of electrodes, at least one electric terminal and a liner connected to the electric terminal and to itself, respectively at a primary connection and a secondary connection, so as to form a recess into which the plurality of electrodes and all or part of the at least one electric terminal extend, the electric terminal having a first dimension substantially equal to or greater than a first dimension of a stack of the plurality of electrodes.

Abstract: An energy storage device includes a set of electrochemical modules and a housing enclosing the modules. The housing includes a double-walled structure. Each module includes electrochemical cells and an enclosure surrounding the electrochemical cells. The enclosure is provided with at least one weak zone capable of discharging gases contained inside the module. The structure includes an inner wall, an outer wall, and at least one chamber defined between the inner wall and the outer wall. The inner wall is provided with a set of openings positioned opposite the at least one weak zone of each module and the outer wall is provided with at least one discharge opening.

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 housing for a battery includes an envelope and at least one rupture device provided with a rupture cap. The rupture device is mounted at the location of an opening formed in the envelope. The rupture cap breaks when an excess pressure is exerted on its outer surface situated on the outer side of the housing.

Abstract: A method for detecting a faulty cell in an electric battery pack includes the following steps: measuring the no-load voltage at the terminals of each cell of the battery pack; calculating the deviation between the no-load voltage measured at the terminals of the cell and an average known no-load voltage as a function of the number of days during which the battery pack was not used; calculating the difference between the calculated deviation and a quantity n·?, n being an integer no lower than 1, and ? being a known standard deviation which is a function of the number of days during which the battery pack was not used; and detecting a faulty cell if the difference is greater than zero.

Abstract: Said method is used for detecting, in an electric storage battery (10) having a plurality of battery cells (1, 2, 3, 4), a self-discharge defect in a cell (1, 2, 3, 4), wherein: a charge balancing of the battery cells (1, 2, 3, 4) is at least partially carried out, a relaxation of the battery cells (1, 2, 3, 4) is performed, a charge balance during the balancing and relaxation (?i) of said cell (i) is calculated for each battery cell (i), and any self-discharge defects of said cell (i) are detected for each battery cell (i) depending on the charge balance calculated for said cell (i) during the balancing and relaxation (?i).

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: 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: 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 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: 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.

Abstract: A battery module including: a storage case, at least one storage battery cell housed inside the storage case, at least one Peltier cell with a first face in direct or indirect contact, via a heat conduction member, with the storage battery cell and a second face in direct or indirect contact, via a heat conduction member, with an outside of the storage case, and a unit controlling the Peltier cell. The Peltier cell and the control unit are supplied with current by the storage battery cell.

Abstract: A method for charging a battery, including: determining a final state of charge and a final temperature of the battery; and calculating charging power and/or cooling power required to reach the two final values within a minimum amount of time.

Abstract: A battery container comprising an outer casing surrounding a housing intended to receive at least one electric energy accumulator comprising Lithium hexafluorophosphate, the container comprising a filter comprising a silicon oxide-based material capable of filtering hydrofluoric acid vapours. The filter including an inner casing disposed between the outer casing and the housing of the container, the outer casing comprising an inner face against which the inner casing is secured, and the inner casing completely surrounds the housing.

Abstract: A method for diagnosing operating condition of a device for cutting off and connecting a high-voltage bipolar battery from/to a bipolar onboard power network of a motor vehicle. The device includes a first power relay between a first terminal of the battery and a first terminal of the network, a second power relay between a second terminal of the battery and a second terminal of the network, and a serial arrangement of a third precharge relay and a precharge resistor, connected in parallel to the first power relay. The method: measures two voltages of the cutoff/connection device; compares the measured voltages with predetermined voltage values representing faults of the cutoff/connection device; and diagnoses a fault of a relay used on the result of the comparison.

Abstract: A device for cooling a battery or batteries of a motor vehicle, for example an electric vehicle, includes a temperature regulating unit including an evaporator that is used to cool the passenger compartment of the vehicle and arranged in a housing, the battery or batteries being contained in a case. The housing of the evaporator is connected to a conduit, an outlet of which is oriented towards a heat exchange area on at least one outer surface of the case containing the battery or batteries.

Abstract: A method for charging a battery, including: determining a final state of charge and a final temperature of the battery; and calculating charging power and/or cooling power required to reach the two final values within a minimum amount of time.

Abstract: An electricity generation module including: a plurality of basic electrochemical cells; plates for supporting the basic cells, the support plates forming spacers for two consecutive basic cells; and a loading mechanism configured to maintain the relative position of the basic cells and the support plates by pressure.

Abstract: A method for diagnosing operating condition of a device for cutting off and connecting a high-voltage bipolar battery from/to a bipolar onboard power network of a motor vehicle. The device includes a first power relay between a first terminal of the battery and a first terminal of the network, a second power relay between a second terminal of the battery and a second terminal of the network, and a serial arrangement of a third precharge relay and a precharge resistor, connected in parallel to the first power relay. The method: measures two voltages of the cutoff/connection device; compares the measured voltages with predetermined voltage values representing faults of the cutoff/connection device; and diagnoses a fault of a relay used on the result of the comparison.