Abstract: The present disclosure relates to an assembly for a fluidtight electrical connection, including: a wall having a first surface and a second surface, a main orifice passing through the first surface and the second surface being formed in the wall, a first groove being formed in the first surface around the main orifice, a first seal suited to being housed in the first groove and a first electronic board including at least a first sealing portion designed to compress the first seal when the first electronic board is mounted fixedly on the first surface of the wall so as to prevent a fluid from passing through the main orifice from the first surface toward the second surface of the wall.

Abstract: The invention concerns a module (10) for a battery including accumulators (20), a first flange (22C) including first through openings, the accumulators being secured with no gluing in the first openings, first electrically-conductive plates (24C), each first plate being connected to the accumulators of a first accumulator assembly, a second flange (22D) including second through openings, the accumulators being secured with no gluing in the second openings, second electrically-conductive plates, each second plate being connected to the accumulators of a second accumulator assembly, and a package (12) delimiting, with the first and second flanges, first, second, and third chambers containing a dielectric liquid, the first flange including first passages (38C) for the dielectric liquid between the first and second chambers and the second flange including second passages (38D) for the dielectric liquid between the second and third chambers.

Abstract: The invention concerns a module (10) for a battery including accumulators (20), a first flange (22A) including first through openings, the accumulators being secured in the first openings, first electrically-conductive plates (24A), each first plate being connected to the accumulators of a first accumulator assembly, a second flange (22B) including second through openings, the accumulators being secured in the second openings, second electrically-conductive plates (24B), each second plate being connected to the accumulators of a second accumulator assembly, and first, second, and third chambers partly delimited by the first and second flanges and containing a dielectric liquid, the first flange including first passages for the dielectric liquid between the first and second chambers and the second flange including second passages for the dielectric liquid between the second and third chambers.

Abstract: A DC voltage power source, comprising: first electrochemical cells electrically connected in series; a DC/DC converter, the output of the converter being connected in series with said first electrochemical cells, a secondary DC voltage source applying its potential difference to the input of the converter.

Abstract: A device for balancing charge of an electric power storage device including: a plurality of electrical storage elements connected in series including at least two current limiting DC/DC converters each including: an input configured to be connected to terminals of a respective storage element; an output configured to be connected to an electrical network having a voltage controlled at a lower level than the voltage at the terminals of the storage device; a transformation law of following type: Vout=K1*Ve?f(I) for I<=1 lim, in which Vout is potential difference at the output, K1 is a constant, Ve is potential difference at the input, f(I) is an affine function of current I delivered at the output, and 1 lim is current limitation of the converter.

Abstract: An electrical power supply system has electrical energy storage modules and an interconnection interface. Each module includes connection terminals of opposite polarities and an energy storage element connected between them. The interface includes pairs of input terminals and output terminals for a load's power supply. Each pair of input terminals connects removably to connection terminals of a respective storage module. The interface forms parallel branches between the two output terminals. Each includes a storage element. Each branch includes a rheostat in series with a corresponding storage element of the branch. The interface includes a device for measuring current passing through each of the branches, and a control circuit for controlling resistances of the rheostats of the branches as a function of the measured current so as to maintain a current intensity passing through the rheostats to be below a threshold.

Abstract: A battery including: a plurality of electrical energy storage units; associated with each unit, an interconnection circuit including first and second switches series-connected between a positive terminal and a negative terminal of the unit, the second switches of the different interconnection circuits being series-connected between a positive terminal and a negative terminal of the battery; associated with each interconnection circuit, a self-contained control circuit capable of causing the turning off of the first switch and the turning on of the second switch to shunt the unit; and a management unit connected to the positive and negative terminals of the system, capable, when a unit is shunted, of detecting a corresponding voltage drop between the positive and negative terminals of the battery, and of accordingly controlling the current flowing through the battery.

Abstract: An automotive vehicle drive unit, comprising a fuel cell whose control input is a setpoint of the electrical power to be delivered by the fuel cell. There is a reversible electrical energy storage system and an electric motor to propel the wheels of a vehicle. An electrical connection element selectively connects the fuel cell and/or the energy storage system to the electric motor. A control circuit stores a model of the consumption of dihydrogen as a function of the power delivered by this fuel cell, in the form of a second-degree polynomial and is configured to compute a coefficient of power distribution ?1 between the fuel cell and the electrical energy storage system pursuant to a defined equation. The control circuit controls the electrical connection element to recharge the energy storage system when the value of the power setpoint Pfc* is greater than the power demanded by the electric motor.

Abstract: A charge-balancing device for balancing charge of an electrical power-storage device that has several series-connected electrical storage elements two DC/DC converters with current limitation, each having an input for receiving a set value of output voltage from the converter, an input to be connected to the terminals of a respective storage element, and an output to be connected to an electric network having a voltage regulated at a level below a voltage at the terminals of the power-storage device, and a control module. The control module is configured to determine respective residual charges of the electrical storage elements connected to the inputs and to apply a higher set value of voltage to the converter connected to an electrical storage elements that has a highest residual charge.

Abstract: A device for balancing charge of an electric power storage device including: a plurality of electrical storage elements connected in series including at least two current limiting DC/DC converters each including: an input configured to be connected to terminals of a respective storage element; an output configured to be connected to an electrical network having a voltage controlled at a lower level than the voltage at the terminals of the storage device; a transformation law of following type: Vout=K1*Ve?f(I) for 1<=1 lim, in which Vout is potential difference at the output, K1 is a constant, Ve is potential difference at the input, f(I) is an affine function of current I delivered at the output, and 1 lim is current limitation of the converter.

Abstract: A battery for powering an electrical motor drive of a motor vehicle includes electrochemical accumulators included in an adiabatic enclosure and included in a tightly-sealed enclosure. The tightly-sealed enclosure is air-tight and water-tight, contains the adiabatic enclosure, and has a volume that is external to the adiabatic enclosure and benefits from thermal exchanges with an exterior thereof. The battery also includes a valve that selectively sets up a flow of a heat-transfer fluid between the adiabatic enclosure and the volume.

Abstract: A charge balancing system for a power battery includes a number of modules connected in series, each having two accumulator stages, each having an accumulator and isolated parallel converters connected to associated accumulator stages and to a low-voltage power system for supplying auxiliaries of an automobile. The converters have first unidirectional converters, each connected across terminals of a module and to the supply system, and second unidirectional converters each connected to the supply system and across the terminals of the accumulator stages, and a control unit for the first and second unidirectional converters. The control unit is configured for controlling a first converter to bring the modules to a similar charge level, for controlling a energy transfer from the battery to the supply system via the first converters, and for controlling a second converter to bring the associated accumulator stages of a module to a similar charge level.

Abstract: An automotive vehicle drive unit, comprising a fuel cell whose control input is a setpoint of the electrical power to be delivered by the fuel cell. There is a reversible electrical energy storage system and an electric motor to propel the wheels of a vehicle. An electrical connection element selectively connects the fuel cell and/or the energy storage system to the electric motor. A control circuit stores a model of the consumption of dihydrogen as a function of the power delivered by this fuel cell, in the form of a second-degree polynomial and is configured to compute a coefficient of power distribution ?1 between the fuel cell and the electrical energy storage system pursuant to a defined equation. The control circuit controls the electrical connection element to recharge the energy storage system when the value of the power setpoint Pfc* is greater than the power demanded by the electric motor.

Abstract: A charge-balancing device for balancing charge of an electrical power-storage device that has several series-connected electrical storage elements two DC/DC converters with current limitation, each having an input for receiving a set value of output voltage from the converter, an input to be connected to the terminals of a respective storage element, and an output to be connected to an electric network having a voltage regulated at a level below a voltage at the terminals of the power-storage device, and a control module. The control module is configured to determine respective residual charges of the electrical storage elements connected to the inputs and to apply a higher set value of voltage to the converter connected to an electrical storage elements that has a highest residual charge.

Abstract: A DC voltage power source, comprising: first electrochemical cells electrically connected in series; a DC/DC converter, the output of the converter being connected in series with said first electrochemical cells, a secondary DC voltage source applying its potential difference to the input of the converter.

Abstract: A printed-circuit board to be fixed to a battery of accumulators includes a substrate comprising conductive tracks, a circuit for measuring voltage connected to the conductive tracks, and an electric interconnection element formed by a single piece, which is conductive and flexible, the interconnection element having a thickness of 0.3 mm to 1.5 mm. The interconnection element comprises a single portion fixed to the substrate by several force-fittings and electrically connected to one of the conductive tracks, and at least two portions overhanging the fixed portion and mobile relative to the substrate. The overhanging portions are formed at ends of a conductive strip disposed to be overhang the fixed portion. The conductive strip connects to the fixed portion by a junction that is narrower than the conductive strip.

Abstract: An electrical power supply system has electrical energy storage modules and an interconnection interface. Each module includes connection terminals of opposite polarities and an energy storage element connected between them. The interface includes pairs of input terminals and output terminals for a load's power supply. Each pair of input terminals connects removably to connection terminals of a respective storage module. The interface forms parallel branches between the two output terminals. Each includes a storage element. Each branch includes a rheostat in series with a corresponding storage element of the branch. The interface includes a device for measuring current passing through each of the branches, and a control circuit for controlling resistances of the rheostats of the branches as a function of the measured current so as to maintain a current intensity passing through the rheostats to be below a threshold.

Abstract: The invention relates to a hydraulic control arrangement for supplying a pressure medium to at least one consumer. The forward line and/or the return line of the consumer comprises a distributing valve that can be continuously controlled and that has two switch positions, and a lowering brake valve that can be placed in an open position due to the pressure in the supply line. The distributing valve is in an open neutral position and can be displaced, electrically or electrohydraulically, from said neutral position into the direction of the second switch position thereof.

Abstract: A charge balancing system for a power battery includes a number of modules connected in series, each having two accumulator stages, each having an accumulator and isolated parallel converters connected to associated accumulator stages and to a low-voltage power system for supplying auxiliaries of an automobile. The converters have first unidirectional converters, each connected across terminals of a module and to the supply system, and second unidirectional converters each connected to the supply system and across the terminals of the accumulator stages, and a control unit for the first and second unidirectional converters. The control unit is configured for controlling a first converter to bring the modules to a similar charge level, for controlling a energy transfer from the battery to the supply system via the first converters, and for controlling a second converter to bring the associated accumulator stages of a module to a similar charge level.

Abstract: A battery for powering an electrical motor drive of a motor vehicle includes electrochemical accumulators included in an adiabatic enclosure and included in a tightly-sealed enclosure. The tightly-sealed enclosure is air-tight and water-tight, contains the adiabatic enclosure, and has a volume that is external to the adiabatic enclosure and benefits from thermal exchanges with an exterior thereof. The battery also includes a valve that selectively sets up a flow of a heat-transfer fluid between the adiabatic enclosure and the volume.