摘要:
Device for charging a battery (13), in particular a battery of an electric traction motor vehicle, on the basis of a single-phase power supply network, comprising a filtering stage (2) intended to be connected to the single-phase network, a voltage step-down stage (3) connected to the filtering stage (2), a voltage step-up stage (4) intended to be connected to the battery (13) and coupled to the voltage step-down stage (3) via an inductive component (L d ) such as an induction coil, a regulating unit (15) able to impose chopping duty ratios (a, a s ) on the voltage step-down stage (3) and on the voltage step-up stage (4). The regulating unit (15) comprises means for compensating for the phase shift between the input current (I f ) of the voltage step-down stage (3) and the input voltage (V c ) of the voltage step-down stage (3).
摘要:
Device and method for charging a battery from a three-phase network, having a degraded charging mode. This device for charging a battery, in particular a battery of an electric traction automotive vehicle, from a three-phase supply network, comprises a first filtering stage intended to be connected to the three-phase network, a voltage step-down stage (3) connected to the filtering stage, a voltage step-up stage (4) intended to be connected to the battery and coupled to the voltage step-down stage via an inductive component, and a regulating unit (CPU) adapted for imposing cyclic switching ratios on the voltage step-down stage (3) and on the voltage step-up stage (4). It comprises means (CPU) for comparing the operating temperature of the regulating unit with a threshold value and means for controlling the charging on the basis of two phases of the three-phase network when the operating temperature of the regulating unit exceeds said threshold value.
标题翻译:DISPOSITIF ETPROCÉDÉDEDÉTERMINATIOND'UNE CONSIGNECORRIGÉEDU COURANT NEUTRE D'UN CHARGEUR SANS ISOLATION GALVANIQUE DE BATTERIE DEVÉHICULEAUTOMOBILEÉLECTRIQUEOU HYBRIDE
摘要:
Device for determining a corrected setting of the neutral current at the output of a rectifier stage of an electrical or hybrid automotive vehicle battery charger without galvanic isolation, the charger being supplied by an electrical supply network, the device comprises a loop phase-locking means (10) able to determine an instantaneous frequency of the network as a function of a measurement of the voltage of the electrical supply network, and a regulating mapping (14) able to determine a setting of neutral current as a function of a setting of battery current. The device comprises a means (11) for calculating the amplitude of the frequency variation of the network as a function of the instantaneous frequency of the network, a correction mapping (12) receiving as input the value of the amplitude of the frequency variation and emitting as output a correction of the neutral current setting, and a summate (15) able to determine a corrected setting of neutral current by adding the correction value for the neutral current setting to the neutral current setting.
摘要:
The invention relates to a system (2) for controlling a power converter (1), the system (2) being capable of controlling at least two consecutive instances of the closure of pairs of controlled switches made up of a bottom switch and a top switch. Measurement means (3) capable of measuring, prior to a transition between the closing of one pair of controlled switches and the closing of another pair of controlled switches, the electric potential at the connection point for at least the two arms in which the controlled switches are affected by said transition; means (4) for comparing the measured potentials; and selection means (5) capable of selecting the top switch of the arm with the lowest measured electric potential and the bottom switch of the arm with the highest measured electric potential, and control means (6) capable of controlling the closing of the controlled switches selected during at least one additional time period around the transition.
摘要:
The invention relates to a battery of accumulators (1), comprising a plurality of power storage cells (11, 12, 21, 22, 31, 32) and an electrical network (5) which connects said cells to one another. According to the invention, said cells are grouped together in composite cells (10, 20, 30) comprising two identical branches each consisting of a least one cell and said composite cells being connected in series to one another, the electrical network comprises: a means (52) for parallel or connection in series of the cells of each composite cell, and a means (57) for controlling said connection means, which are suitable for connecting the cells of each composite cell in parallel or in series in order to adapt the output voltage of the battery of accumulators to the desired value and in order to balance the charging states of the cells.