Abstract: A control method is provided for controlling a declutching of a sliding gear of a vehicle gearbox having dogs. The sliding gear rotates with a shaft of the vehicle gearbox on which the sliding gear moves axially between a declutched position and an engaged position to transmit rotation to a vehicle wheel. The control method comprises applying a zero torque request to all power sources of the vehicle, applying a declutching instruction to the sliding gear, estimating a resistance torque on the dogs in absence of rapid declutching, calculating a residual torque on the dogs as a function of a calculated resistance torque and an anti-disengagement angle of the resistance torque on the dogs, cancelling the residual torque by application of two opposing cancellation torques on the sliding gear, and declutching the sliding gear.

Abstract: A control method is provided for controlling a declutching of a sliding gear of a vehicle gearbox having dogs. The sliding gear rotates with a shaft of the vehicle gearbox on which the sliding gear moves axially between a declutched position and an engaged position to transmit rotation to a vehicle wheel. The control method comprises applying a zero torque request to all power sources of the vehicle, applying a declutching instruction to the sliding gear, estimating a resistance torque on the dogs in absence of rapid declutching, calculating a residual torque on the dogs as a function of a calculated resistance torque and an anti-disengagement angle of the resistance torque on the dogs, cancelling the residual torque by application of two opposing cancellation torques on the sliding gear, and declutching the sliding gear.

Abstract: A device synchronizes primary speed of a primary shaft receiving an electrical torque from an electric machine with a secondary speed lower than the primary speed of a secondary transmission shaft. The primary shaft and secondary shaft are decoupled. The primary shaft has a kinetic energy associated with the primary speed. The device provides electrical braking torque to the primary shaft until the primary speed is substantially equal to the secondary speed. The device also at least partially recovers, in the form of electrical energy, the kinetic energy lost by the primary shaft and transmits the electrical energy to an energy storage device.

Abstract: A method for estimating an insulation resistance between a point of a high-voltage circuit including a high-voltage motor vehicle battery and a ground of the vehicle includes measuring a voltage value at terminals of a measurement circuit that includes a capacitive element connected to the battery and calculating a standard deviation value based on the measured voltage value and based on a theoretical voltage value estimated from a model of the measurement circuit. The model is a function of a capacitance value of the capacitive element. The method also includes calculating an averaged deviation value from the standard deviation value and previous deviation values and estimating an updated insulation resistance value in accordance with the averaged deviation value.

Abstract: A method controls a shift actuator with a sliding gear for a gearbox. The gearbox includes a control element for controlling a shift fork responsible for disengaging and engaging pinions on a shaft of the gearbox that receives torque from a traction machine powered by the on-board electrical system of the vehicle. The control element is positioned upstream of a mechanical spring-assist system and regulated in position by a DC actuating motor. The method includes temporarily raising a supply voltage applied to the actuating motor above a base voltage of an on-board electrical system during the disengaging and engaging the pinions.

Abstract: A method for controlling the power available on the electric traction chain of a powertrain (GMP) consisting of a heat engine that can transmit the torque from same to the wheels at different transmission ratios, a first electric machine (ME), a second electric machine (HSG) linked alternately to the input shafts of the heat engine or of the first electric machine (ME) in the powertrain (GMP), and a battery supplying power to the electric machines, characterised in that the supply voltage of the electric machines is established by a DC/DC voltage converter (13) arranged between the terminals of the battery and those of the electric machines, capable of imposing on them a voltage equal to that of the battery (Ubat), or indeed a voltage (Udc) higher than same.

Abstract: A method for controlling the torque available during the ratio changes of a drive train consisting of a heat engine (Mth) connected to a first input shaft (4) of a gearbox (1) that can transmit the torque of same to the wheels at different transmission ratios, a first electric machine (ME) connected to a second input shaft thereof, and a second electric machine (2) connected alternately to the first or second input shaft of the gearbox, characterised in that, during the changes in the transmission ratio of the heat engine (Mth), the second electric machine (2) operates in regenerative mode and transmits all of the electric power of same to the first electric machine (ME) that uses it to compensate for the reduction in torque at the driven wheel resulting from the temporary decoupling of the heat engine during the change in ratio of same.

Abstract: A method for synchronising an idler gear before coupling of same on a secondary shaft of a parallel-shaft gearbox comprising at least one primary shaft connected to a drive source of a vehicle, at least one secondary shaft carrying the idler gear for transmitting the torque from the drive source to the wheels of the vehicle at a transmission ratio, and at least one coupling means for coupling the idler gear to the shaft of same having no mechanical synchronisation members, characterised in that the drive source is controlled, before the coupling, at a speed imposing a differential speed with respect to the synchronisation speed thereof at the transmission ratio which is to be engaged, this differential being determined as a function of the quantity of energy absorbed by the vehicle at the time of coupling in response to the disappearance of the differential.

Abstract: A method is provided for controlling the position of a gearbox actuator in charge of engaging a ratio at the end of a preliminary phase of synchronizing two shafts of the gearbox via a torque-driven traction machine to bring the speed difference of the two shafts within a range enabling the mechanical coupling thereof. The method ensures that the speed measured on one of the two shafts converges with a speed observed as a function of the inertia value observed on this shaft relative to the value expected as a function of the gearbox actuator, and of an estimation of the machine torque.

Abstract: A device synchronizes primary speed of a primary shaft receiving an electrical torque from an electric machine with a secondary speed lower than the primary speed of a secondary transmission shaft. The primary shaft and secondary shaft are decoupled. The primary shaft has a kinetic energy associated with the primary speed. The device provides electrical braking torque to the primary shaft until the primary speed is substantially equal to the secondary speed. The device also at least partially recovers, in the form of electrical energy, the kinetic energy lost by the primary shaft and transmits the electrical energy to an energy storage device.

Abstract: A battery of accumulators including a plurality of power storage cells and an electrical network which connects the cells to one another. The cells are grouped together in composite cells including two identical branches each including at least one cell and the composite cells being connected in series to one another. The electrical network includes: a mechanism for parallel or connection in series of the cells of each composite cell, and a mechanism for controlling the connection mechanism, which is configured to connect the cells of each composite cell in parallel or in series to adapt an output voltage of the battery of accumulators to a desired value and to balance charging states of the cells.

Abstract: A method is provided for learning a neutral position of a gear shift actuator with a sliding gear movable between two opposed engaging pinions. The gear shift actuator has a control element that is position-regulated by a drive motor to acts on the slide gear. The slide gear has a spring that accumulates energy when the teeth of the sliding gear abut against the pinion to shift the gears and then restore this energy by relaxing to assist the engagement of the teeth of the sliding gear between the pinion. The method determines the neutral position of the actuator by identifying the positions of the control element at a time when the teeth of the sliding gear abut against the teeth of each of the two pinions by observing a resistant torque on the control element during movement of the sliding gear towards the pinions.

Abstract: A method is provided for controlling the position of a gearbox actuator in charge of engaging a ratio at the end of a preliminary phase of synchronizing two shafts of the gearbox via a torque-driven traction machine to bring the speed difference of the two shafts within a range enabling the mechanical coupling thereof. The method ensures that the speed measured on one of the two shafts converges with a speed observed as a function of the inertia value observed on this shaft relative to the value expected as a function of the gearbox actuator, and of an estimation of the machine torque.

Abstract: A method for controlling a power train and corresponding system. A method for controlling a power train equipping a motor vehicle and comprising an electric motor provided with a rotor and a stator, said method comprising the regulation of the currents of the rotor and the stator delivering control signals to the electric motor, said currents to be regulated and said control signals being expressed in a rotating reference system and comprising a plurality of axes. The method includes a measurement of the values of the currents of the rotor and the stator, a transformation of said measurements into said rotating reference system, a determination of minimum and maximum limits for each of the currents on the basis of said control signals, and a comparison of the measured signals with said minimum and maximum limits.

Abstract: A device and method for charging a battery from a three-phase network, having a degraded charging mode, for example a battery of an electric traction automotive vehicle. The device includes a first filtering stage configured to be connected to the three-phase network, a voltage step-down stage connected to the filtering stage, a voltage step-up stage configured to be connected to the battery and coupled to the voltage step-down stage via an inductive component, a regulating unit configured to impose cyclic switching ratios on the voltage step-down stage and on the voltage step-up stage, and a device for comparing operating temperature of the regulating unit with a threshold value and controlling the charging based on two phases of the three-phase network when the operating temperature of the regulating unit exceeds the threshold value.

Abstract: A device determines a corrected setting of a neutral current at an output of a rectifier stage of an electrical or hybrid automotive vehicle battery charger without galvanic isolation. The device includes a phase-locked loop to determine an instantaneous frequency of the network as a function of a measurement of a voltage of an electrical supply network, a regulating mapping to determine a neutral current setting as a function of a setting of battery current, a device to calculate an amplitude of a frequency variation of the network as a function of the instantaneous frequency, a correction mapping that receives as input a value of the amplitude of the frequency variation and emits as output a correction value of the neutral current setting, and a summer to determine a corrected neutral current setting by adding the correction value of the neutral current setting to the neutral current setting.

Abstract: A system and method for secure charging of a motor vehicle battery including the steps of secure charging of the battery of a motor vehicle from a network estimating the resistance between the earth and the neutral of the network, including at least one injection of pulses of current into the network, measurements of voltage between the earth and the neutral of the network in response to each pulse, and a determination of the earth resistance from the measured voltages. Each injection of current pulses into the network includes the injection of a first positive pulse followed by a second negative pulse, the first and the second pulses having an equal intensity in terms of absolute value and being separated by a sufficiently short interval for a stray capacitor coupled to the network to be further charged during the second pulse.

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 method controls a shift actuator with a sliding gear for a gearbox. The gearbox includes a control element for controlling a shift fork responsible for disengaging and engaging pinions on a shaft of the gearbox that receives torque from a traction machine powered by the on-board electrical system of the vehicle. The control element is positioned upstream of a mechanical spring-assist system and regulated in position by a DC actuating motor. The method includes temporarily raising a supply voltage applied to the actuating motor above a base voltage of an on-board electrical system during the disengaging and engaging the pinions.

Abstract: A method for estimating an insulation resistance between a point of a high-voltage circuit including a high-voltage motor vehicle battery and a ground of the vehicle includes measuring a voltage value at terminals of a measurement circuit that includes a capacitive element connected to the battery and calculating a standard deviation value based on the measured voltage value and based on a theoretical voltage value estimated from a model of the measurement circuit. The model is a function of a capacitance value of the capacitive element. The method also includes calculating an averaged deviation value from the standard deviation value and previous deviation values and estimating an updated insulation resistance value in accordance with the averaged deviation value.