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

Schneider Electric Industries Sas

Eric Fernandez

Ghislain Despesse

Sylvain Bacquet

Yan Lopez

Rémy Thomas

Léandro Cassarino

Daniel Chatroux

Julien Dauchy

Sylvain Mercier

Pierre Perichon

Matthieu Desbois-Renaudin

Jean Oriol

Charley Lanneluc

Remy Thomas

Leandro Cassarino

Cédric Bricquet

Tony Delaplagne

Kelli Mamadou

Sébastien Rosini

Romain Franchi

The monitoring device is configured for monitoring a converter comprising a first and a second input terminals, two output terminals, a first filter branch connected between the input terminals, a second filter branch connected in parallel with the first branch, two switching branches connected in parallel with the second branch, each switching branch including two switching half-branches connected in series and in an intermediate point forming an output terminal. The monitoring device comprises a detection impedance configured for being connected between the first and the second branches, and a detection module configured for comparing the voltage across the detection impedance with a predefined threshold, then for generating a detection signal as soon as said voltage is greater than said threshold.

Device and method for monitoring an electrical energy converter, related electrical energy conversion system

A method of controlling a battery including a first control circuit and a plurality of modules arranged in series between first and second terminals. Each module includes, between third and fourth terminals, electric cells and switches and a second switch control circuit. The battery further includes at least one first data transmission bus coupling the first control circuit to each second control circuit, the first control circuit including a memory having chained lists stored therein. Each chained list includes elements each including an identifier of one of the electric cells and at least one first pointer designating another element in the chained list.

Battery pack

A battery with switched accumulators, including: a first cell; a plurality of second cells series-connected with the first cell, each first and second cell including: an electric accumulator series-connected with a first switch, a second switch connected in parallel with the accumulator and the first switch, and a first diode, the cathodes of the first diodes being connected to an output node, the anode of the accumulator of the first cell being connected to ground, the anode of the first diode of each second cell being coupled to the cathode of the accumulator by at least one third switch; and a control circuit capable of measuring characteristics of at least certain accumulators and of controlling the first, second, and third switches according to the characteristics.

Battery with switched accumulators

A method of controlling a battery including a first control circuit and a plurality of modules arranged in series between first and second terminals, each module including, between third and fourth terminals, electric cells and switches and a second switch control circuit. The method includes the determination by the first control circuit of a first priority table associated with a battery charge operation and of a second priority table associated with a battery discharge operation, the first priority table including a first classification of the priorities of the electric cells for the charge operation and the second priority table comprising a second classification of the priorities of the electric cells for the discharge operation.

Electrical accumulator battery

A method for controlling a power supply device of an electrical system, the device including at least one separate power supply assembly per phase of the electrical system, each power supply assembly including at least one battery pack defined by a state parameter and provided with at least one battery to supply a control voltage to the phase to which it is connected, taking into account at least one setpoint value. The method includes executing at least one correction block receiving as input each setpoint value and the state parameter of each battery pack of the power supply assemblies of the system, and for each power supply assembly, the correction block is configured to determine a correction value to be applied directly or indirectly to its setpoint value.

Method for controlling a power supply device of an electrical system

A method of controlling an electric system including electric cells. The method includes the steps of: a) determining a first (second) priority table including first (second) cell priority levels for a system charge (discharge) operation; b) determining the average current exchanged by each cell over a time window according to the cell implementation number in a cell connection sequence; c) determining a classification of the cell implementation numbers by increasing or decreasing order of the average current; d) assigning the implementation numbers according to the order of the classification to the cells by increasing or decreasing number of the priority levels of the first or second priority table; and e) connecting or disconnecting the cells according to the order of the assigned implementation numbers.

Electrical system comprising switched cells and method for controlling such a system

A battery including a first control circuit and a plurality of modules arranged in series between first and second terminals, each module including electric cells and switches coupling the cells to third and fourth terminals and a second switch control circuit. The battery includes a first data transmission bus coupling the first control circuit to each second control circuit and a second data transmission bus coupling the first control circuit to each second control circuit. The first control circuit is capable of transmitting first data to the second control circuits over the first bus at a first rate and is capable of transmitting second data to the second control circuits over the second bus at a second rate smaller than the first rate.

Data transmission techniques associated with a battery pack

A method of controlling a battery including a first control circuit and a plurality of modules arranged between first and second terminals. Each module comprises electric cells. The battery further includes a sensor of the current flowing through the first terminal. The method includes the successive steps of: updating a first counter representative of the quantity of charges flowing through the first terminal; for each electric cell, for each connection of the electric cell to the other electric cells, storing into first data the value of the first counter on connection of the electric cell and for each disconnection of the electric cell from the other electric cells, storing a second counter equal to the difference between the value of the first counter on disconnection of the electric cell and the first data of said electric cell.

A method of controlling a battery including a first control circuit and a plurality of modules arranged in series between first and second terminals, each module including electric cells and switches and a second switch control circuit, the battery further including at least one first data transmission bus coupling the first control circuit to each second control circuit, the method including the transmission, by the first control circuit to the second control circuits, of first data representative of an electric cell configuration to be obtained to follow a set point for the delivery of a voltage and/or of a current between the first and second terminals, the second control circuits connecting or disconnecting the electric cells based on said first data and on a classification of the priorities of the electric cells.

Method and apparatus for controlling a battery pack

A method of controlling a battery including a first control circuit and a plurality of modules arranged in series between a first terminal and a second terminal, each module of the plurality of modules including electric cells and switches coupling the electric cells and a second switch control circuit, the battery further including at least one first data transmission bus coupling the first control circuit to each second control circuit. The first control circuit includes a memory-having, for each electric cell, an identifier of said each electric cells and a priority level for connection of said each electric cell with other electric cells among priority levels stored therein.

A battery including: a power supply bus; an assembly of electric cells and of first switches coupling the cells; second switches forming an H bridge and coupling said assembly to nodes; a first circuit for supplying first control signals to the first and second switches; a second circuit for delivering a first power supply voltage to the first circuit based on the voltage across one of the cells; a third circuit for supplying second control signals to at least two of the second switches and connected to the power supply bus; and first diodes coupling the first circuit to the two second switches and second diodes coupling the third circuit to the two second switches.

A battery equalization system has two accumulator stages in series, each including an accumulator, and &#xb1;poles, a voltage generator for each accumulator stage, and an associated charging device powered by the generator. The charging device includes an inductor and capacitors. One capacitor connects to the generator's positive pole, the other connects to its negative pole, a first diode, whose anode connects to a negative pole of the accumulator stage and whose cathode connects to the first capacitor, a second diode whose anode connects to the negative pole of the accumulator stage and whose cathode connects to the second end of the second capacitor, and a switch connected to the inductor and to the positive pole of the accumulator stage, and a control device that controls the generator, closes the switch and causes the inductor to stores energy and to transfer it to the associated accumulator stage.

Charge equalization system for batteries

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.

Battery for an electric motor of a motor vehicle

An equalization system for batteries has two series-connected accumulator stages connected, each including an accumulator, a voltage generator including positive and negative poles, for each stage, an associated charging device supplied by the voltage generator. The charging device includes an inductor having a first and second ends, and a capacitor having first and second ends. The capacitor's first end connects to the generator's positive pole. It also has a diode whose anode connects to a negative pole of the accumulator stage and whose cathode connects to the inductor's first end. It also has a switch whose first end connects to the inductor. And it also has a control device that controls the generator and closes a switch of a charging device associated with an accumulator stage to be charged so that the inductor stores energy, and causes its transfer to that accumulator stage.

The invention relates to a method for protecting a set of electrochemical cells incorporated into a fuel cell stack from corrosion during an operation for shutting down the fuel cell stack, which method comprises steps of:

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Saint Paul de Varces, France

Eric Fernandez