Abstract: An electrical power supply for a hybrid or electric motor vehicle includes a first power source to supply a voltage network of the vehicle, a second power source to supply the voltage network of the vehicle and/or to recharge the first power source, and a control module to control a safety structure of the first power source and of the second power source. The electrical power supply includes a metal casing containing the first power source, the second power source, the control module and the safety structure. The safety structure is common to the two power sources.

Abstract: The charging system comprises: two chargers (2a, 2b) which deliver instantaneous electrical energy for charging an electric vehicle, with different electrical charging characteristics, two electrical lines (16a, 16b), each connecting one of the two chargers (2a, 2b) to a plurality of charging points (4), each serving a charging space (5), a switching system (6) which is associated with each charging point (4) and which connects or does not connect an electric vehicle to the first or the second charger (2), such that each charger (2a, 2b) is connected at most to one charging point (4), and a control system (8) which controls the switching system (6).

Abstract: A method of managing charging of a traction battery and corresponding devices, the traction battery including a thermal regulating system, the thermal regulating system including a compressor, the method including transmitting information between a control device for the compressor and a device for managing the charging of the traction battery, before activating the compressor or before activating a device for charging the traction battery.

Abstract: A secure system for charging a battery of a motor vehicle from a power supply network, which system is in a vehicle and includes a mechanism measuring frequency of the network, an injection mechanism injecting current pulses into the network, a mechanism measuring voltage between the ground and a neutral of the network, an analog filter filtering the measured voltages at high frequencies, a digital filter filtering the analog-filtered voltages at low frequencies, and a mechanism determining resistance between the ground and the neutral of the network on the basis of the digitally filtered voltages and an amplitude of the current pulses. The digital filter includes a mean value filter which determines a mean value based on N voltage measurements spaced apart by a time interval T+T/N, where T is the period of the network determined by the mechanism measuring the frequency of the network.

Abstract: A device for measuring resistance of a ground tap and a charger for an on-board vehicle including the device. The device includes a current source and an ammeter disposed on a first electrical branch, provided to link a phase of a power supply network with the ground of the installation; a second electrical branch provided to link a neutral wire of the power supply network with the ground of the installation, including a resistor across terminals of which is connected a voltmeter, and a first capacitor in series with the resistor; and a third electrical branch is provided for linking the neutral wire of the network with the ground of the installation, and including, on the third branch, in parallel with the first capacitor and with the first resistor, a second capacitor of higher value than the first capacitor.

Abstract: A system charges a traction battery of an at least partially electric traction vehicle. The system includes an input filter connected to a power supply network. The filter includes a capacitance connected through a switch of the filter between at least one power supply phase connection or a neutral connection of the charging system, and a ground of the charging system. The system includes a controller for charging parasitic capacitances of the charging system without transferring energy from the power supply network to the battery while the power supply network is connected to the charging system. The system includes a time delay for closing the switch of the filter when a delay time frame higher than or equal to a predetermined time frame expires. The system also includes a charging activator for transferring energy between the power supply network and the battery, the switch of the filter being closed.

Abstract: A device and method for estimating resistance of a ground connection of an electrical apparatus connected to an electrical power network, also connected to ground by an additional resistance, and including at least one impedance disposed at an input of the electrical apparatus, a voltage generator connected to the impedance and connected to ground, a mechanism to measure current flowing to ground, and a calculation mechanism to estimate the resistance of the ground connection as a function of the current flowing to ground. The device and method can for example find application in estimation of resistance of a ground connection of a charger of an electric or hybrid traction motor vehicle.

Abstract: A device and method for protection of an electrical apparatus against touch currents, the device configured to be connected between a source of electrical power and a device onboard a motor vehicle, and including a circuit for detecting leakage currents and for estimating touch currents, configured to be connected to the electrical connection lines of the apparatus, a circuit measuring frame current, and a mechanism controlling operation of the apparatus according to the estimated level of the touch currents and the measured level of the frame current. The device and method can in one embodiment be used to protect against leakage currents during recharging of a hybrid or electrically driven motor vehicle.

Abstract: A device including a mechanism detecting a position of a neutral of a power supply source for an electrical energy apparatus, such as a battery charger of an electric or hybrid motor vehicle, and a mechanism connecting a capacitor for limiting leakage currents between the neutral and an electrically conducting structure in which the apparatus is placed. The device can be used to limit leakage current during recharging of an electric or hybrid traction motor vehicle.

Abstract: A system for charging a motor vehicle battery, configured to be connected to a first multiphase power supply network or to a second multiphase or single phase power supply network of which the power is lower than that of the first network, including: a filtering stage including plural capacitors; a first rectifier stage including switches; and an inverter stage configured to be connected to the battery. The charging system includes: a second rectifier stage including plural switches, and configured to be connected between the power supply network and the battery, in parallel with the filtering stage and at least a portion of the first rectifier stage; and a capacitor of which the capacity is lower than that of the capacitors of the filtering stage, connected between two phases or between a phase and a neutral of the second power supply network.

Abstract: A device for measuring resistance of a ground tap and a charger for an on-board vehicle including the device. The device includes a current source and an ammeter disposed on a first electrical branch, provided to link a phase of a power supply network with the ground of the installation; a second electrical branch provided to link a neutral wire of the power supply network with the ground of the installation, including a resistor across terminals of which is connected a voltmeter, and a first capacitor in series with the resistor; and a third electrical branch is provided for linking the neutral wire of the network with the ground of the installation, and including, on the third branch, in parallel with the first capacitor and with the first resistor, a second capacitor of higher value than the first capacitor.

Abstract: A method of managing charging of a traction battery and corresponding devices, the traction battery including a thermal regulating system, the thermal regulating system including a compressor, the method including transmitting information between a control device for the compressor and a device for managing the charging of the traction battery, before activating the compressor or before activating a device for charging the traction battery.

Abstract: A secure system for charging a battery of a motor vehicle from a power supply network, which system is in a vehicle and includes a mechanism measuring frequency of the network, an injection mechanism injecting current pulses into the network, a mechanism measuring voltage between the ground and a neutral of the network, an analog filter filtering the measured voltages at high frequencies, a digital filter filtering the analog-filtered voltages at low frequencies, and a mechanism determining resistance between the ground and the neutral of the network on the basis of the digitally filtered voltages and an amplitude of the current pulses. The digital filter includes a mean value filter which determines a mean value based on N voltage measurements spaced apart by a time interval T+T/N, where T is the period of the network determined by the mechanism measuring the frequency of the network.

Abstract: A system for compensating for a high-frequency leakage current emanating from at least one component of a motor vehicle, connected to a power supply network via a rectifier device, the power supply network having a ground and at least one phase other than ground. For each component, a first compensation device is connected to rectified phases originating from the rectifier device upstream of the component, and to a motor vehicle ground and/or a second compensation device is connected to rectified phases downstream of the component and to the ground, the compensation devices configured to pick off some of the voltage applied to the component and transmit to the ground a compensation current of same amplitude and direction as the leakage current but of opposite phase.

Abstract: An air-conditioning system for a vehicle, that includes a module for controlling the air-conditioning group for adjusting the temperature inside the passenger compartment to a setpoint temperature, the control module being capable of correcting the temperature adjustment in the passenger compartment based on a received sunshine value in the passenger compartment. The system further includes a mechanism correcting the sunshine value to improve the correction of the temperature adjustment inside the passenger compartment particularly in cloudy conditions.

Abstract: A method for controlling switches of a current rectifier installed on a motor vehicle, including: determining a neutral point current intensity required at an output of the rectifier; determining current vector coordinates making it possible to obtain the neutral point current in a Fresnel space including six sectors defined by six remarkable vectors; determining a half-sector including the current vector among twelve half-sectors forming the Fresnel space; determining a weighted vectorial combination of two remarkable vectors defining the Fresnel sector making it possible to obtain the current vector; switching the current rectifier switches to obtain the current vector in accordance with the weighting coefficients; and obtaining a free-wheel vector for remaining time of a cutting period minimizing voltage differences between the ground and the voltage rectifier during transition from one switching to another.

Abstract: A compensation system for compensating for a leakage current of an electric battery charger on board a vehicle and connected to a power supply network by an electrical ground, by a neutral phase and by at least one phase other than the neutral phase, a residual current differential protection device being interposed between the battery charger and the power supply network, a leakage current flowing from the battery charger to the power supply network on the electrical ground. The compensation system includes a compensation mechanism for compensating for a leakage current and configured to emit, on the electrical ground, a compensation current of same amplitude as the leakage current and of a phase that is the opposite of phase of the leakage current.

Abstract: A device and method for estimating resistance of a ground connection of an electrical apparatus connected to an electrical power network, also connected to ground by an additional resistance, and including at least one impedance disposed at an input of the electrical apparatus, a voltage generator connected to the impedance and connected to ground, a mechanism to measure current flowing to ground, and a calculation mechanism to estimate the resistance of the ground connection as a function of the current flowing to ground. The device and method can for example find application in estimation of resistance of a ground connection of a charger of an electric or hybrid traction motor vehicle.

Abstract: A device and method for protection of an electrical apparatus against touch currents, the device configured to be connected between a source of electrical power and a device onboard a motor vehicle, and including a circuit for detecting leakage currents and for estimating touch currents, configured to be connected to the electrical connection lines of the apparatus, a circuit measuring frame current, and a mechanism controlling operation of the apparatus according to the estimated level of the touch currents and the measured level of the frame current. The device and method can in one embodiment be used to protect against leakage currents during recharging of a hybrid or electrically driven motor vehicle.

Abstract: A device including a mechanism detecting a position of a neutral of a power supply source for an electrical energy apparatus, such as a battery charger of an electric or hybrid motor vehicle, and a mechanism connecting a capacitor for limiting leakage currents between the neutral and an electrically conducting structure in which the apparatus is placed. The device can be used to limit leakage current during recharging of an electric or hybrid traction motor vehicle.