Abstract: A method of detecting an electric arc in an electrical system from a signal originating from at least one sensor detecting acoustic waves in the system, including: a) calculating by means of a processing device, over a sliding window of signal samples, at least one statistical parameter selected from the skewness and the kurtosis of the signal; b) detecting a possible occurrence of an event by taking into account said at least one statistical parameter; and c) performing a frequency analysis of the signal enabling to identify an electric arc when an event is detected at step b).

Abstract: An electronic device including a carrier, at least one active component, and at least one inductor, the inductor including a core and a winding surrounding at least part of the core, the core delimiting at least part of a magnetic field along which magnetic flux lines are intended to run. The core includes a body including at least two portions defining two successive zones of the magnetic path, the thickness of each portion being lower with respect to the length and to the width thereof, each portion including a surface that is lateral with respect to a direction of the magnetic path, a first of the portions being in direct contact with the carrier via part of its lateral surface and a second portion being positioned with respect to the carrier such that its lateral surface is free of contact with the carrier.

Abstract: Defining magnetic locks with permanent magnet and inductive coil that can be controlled instantaneously on demand within a battery pack by injection of a low electrical current from one or more BMSs. Whatever the positioning of the magnetic locks within the battery pack, one or more controlling BMSs can be positioned either on each accumulator or busbar, or on a branch to control on demand the set of accumulators in electrical series or in parallel, in the branch, either singly or at overall pack level.

Abstract: A battery pack wherein each battery is mechanically and electrically connected by a magnetic device to a busbar. In case of failure of any accumulator, it is disconnected completely passively because its failure generates an inactivation of the magnetic device. The disconnection causes the gravity drop of the accumulator and the possibly completely passive implementation of an accumulator shunt.

Abstract: A switch including: first and second electrically conductive electrodes; an electrically conductive element; an electrically insulating medium separating the first and second electrodes and separating the electrically conductive element from the second electrode; and a pyrotechnic element including an explosive, explosion of the explosive causing the electrically conductive element to be driven into contact with the second electrode and the conductive element to be welded to the second electrode to form an electrically conductive link between the first and second electrodes.

Abstract: An electronic device including a carrier, at least one active component, and at least one inductor, the inductor including a core and a winding surrounding at least part of the core, the core delimiting at least part of a magnetic field along which magnetic flux lines are intended to run. The core includes a body including at least two portions defining two successive zones of the magnetic path, the thickness of each portion being lower with respect to the length and to the width thereof, each portion including a surface that is lateral with respect to a direction of the magnetic path, a first of the portions being in direct contact with the carrier via part of its lateral surface and a second portion being positioned with respect to the carrier such that its lateral surface is free of contact with the carrier.

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 for detecting electric arcs in a closed chamber having no openings larger than 5 mm and defining a gas volume to be monitored. The method includes a step of measuring a sound level captured by a microphone, placed inside the chamber, at frequencies greater than about 60 kHz while filtering out the lower frequencies, and a step of comparing the level with a threshold.

Abstract: An electronic converter allows a power transfer from an AC voltage source, connected between an input terminal and a common terminal, to a load connected between an output terminal and a reference terminal, the AC voltage including positive alternations interspersed with negative alternations at a first frequency. The converter includes an input inductance connected to the input terminal; an output inductance connected to the output terminal; a storage capacitor between the inductances; a chopper circuit that: in a first state, charges the input inductance via the AC voltage source and discharges the storage capacitance in the output inductance by supplying the load; in a second state, discharges the input inductance in the storage capacitance and discharges the output inductance by supplying the load; and a device for controlling the chopper circuit to activate, during each alternations, consecutive operating cycles at a second frequency higher than the first frequency.

Abstract: An apparatus for anticipating a transistor-fault includes a control circuit that applies a blocking potential of a transistor to its gate using a resistive component, the blocking potential being less than the source and drain potentials. The detection circuit detects a leakage current between the transistor's gate and its source to anticipate a short circuit between them. It does so by measuring the gate-potential while the transistor is blocked. It then compares this measured potential to a reference potential and generates an anomaly signal as a function of this comparison.

Abstract: An electronic converter allows a power transfer from an AC voltage source, connected between an input terminal and a common terminal, to a load connected between an output terminal and a reference terminal, the AC voltage including positive alternations interspersed with negative alternations at a first frequency. The converter includes an input inductance connected to the input terminal; an output inductance connected to the output terminal; a storage capacitor between the inductances; a chopper circuit that: in a first state, charges the input inductance via the AC voltage source and discharges the storage capacitance in the output inductance by supplying the load; in a second state, discharges the input inductance in the storage capacitance and discharges the output inductance by supplying the load; and a device for controlling the chopper circuit to activate, during each alternations, consecutive operating cycles at a second frequency higher than the first frequency.

Abstract: A system and method regulate the temperature of an electrochemical battery. The system can be incorporated in a hybrid or electric motor vehicle including at least two electrical-energy-accumulating elements, each element including at least one electrochemical cell. The system increases the intensity of the value of the current flowing through the battery up to a first threshold value and includes a module for disconnecting and connecting an electrical-energy-accumulating element.

Abstract: The invention relates to a DC electrical power supply source including a protective housing and electrical energy storage devices disposed in the protective housing. The storage devices are connected electrically in series by way of interconnection elements. There is an acoustic sensor configured to measure ultrasounds and a filling medium disposed in the housing. The filling medium exhibits a homogeneous acoustic impedance and forms a continuous acoustic link between the interconnection elements and the acoustic sensor.

Abstract: A system and corresponding method, including a battery including a plurality of battery modules arranged in series, each module including a switch and a diode arranged in series and connected in parallel to the module. The system further includes a capacitor connected directly by an electrical connection to a point situated between the diode and the switch of each module, and directly to the negative terminal of the battery, and a load connected in parallel to the capacitor, a mechanism controlling each module switch using a pulse width modulation signal having a duty cycle that varies between 0% and 100%.

Abstract: An apparatus for anticipating a transistor-fault includes a control circuit that applies a blocking potential of a transistor to its gate using a resistive component, the blocking potential being less than the source and drain potentials. The detection circuit detects a leakage current between the transistor's gate and its source to anticipate a short circuit between them. It does so by measuring the gate-potential while the transistor is blocked. It then compares this measured potential to a reference potential and generates an anomaly signal as a function of this comparison.

Abstract: The dynamic system is part of a dynamic apparatus having at least one photovoltaic generator, at least one battery and at least one device for controlling the dynamic apparatus. The method for controlling the dynamic system on the basis of sunlight involves electrically isolating the photovoltaic generator from the battery, reading the no-load voltage of the photovoltaic generator, determining a numerical value on the basis of the no load voltage, corresponding to the no-load voltage reading, and comparing the predetermined numerical value with at least one reference threshold value. When the predetermined numerical value corresponds to a value range limited by at least one such reference threshold value the dynamic system is controlled so as to thereon confer a configuration corresponding to the value range.

Abstract: A method of detecting an electric arc in an electrical system from a signal originating from at least one sensor detecting acoustic waves in the system, including: a) calculating by means of a processing device, over a sliding window of signal samples, at least one statistical parameter selected from the skewness and the kurtosis of the signal; b) detecting a possible occurrence of an event by taking into account said at least one statistical parameter; and c) performing a frequency analysis of the signal enabling to identify an electric arc when an event is detected at step b).

Abstract: The invention relates to an electrical system comprising a plurality of modules that can be powered independently withy current, characterized in that it further comprises: a module configured to apply to each of the modules a current which is modulated by a signal specific to the module, an acoustic sensor enabling the measurement of an acoustic signal that accompanies an electrical arc generated by a defective module, a treatment unit configured to identify a signature of one of the specific signals in the acoustic signal measured by the acoustic sensor in order to identify the defective module. The invention also relates to a method for locating faults in such an electrical system.

Abstract: A pyrotechnic device including at least one layer of a pyrotechnic material deposited on all or part of an electronic circuit, the pyrotechnic material being capable of being triggered by a heating of the circuit due to a failure thereof.

Abstract: A method for detecting electric arcs in a closed chamber having no openings larger than 5 mm and defining a gas volume to be monitored. The method includes a step of measuring a sound level captured by a microphone, placed inside the chamber, at frequencies greater than about 60 kHz while filtering out the lower frequencies, and a step of comparing the level with a threshold.