Electrical power supply circuit of a vehicle electrical energy storage unit

Abstract

Secondary sub-circuit (6) for supplying power to an electrical energy storage unit (2), this secondary sub-circuit (6) being capable of exchanging electrical energy by inductive coupling with a primary sub-circuit (4) capable of being connected to a voltage network (5), and this sub-circuit (6) also being capable of being connected to an electrical energy storage unit (2), the secondary sub-circuit (6) comprising: - a secondary inductive cell (20) for the exchange by inductive coupling of electrical energy with the primary sub-circuit (4), this secondary inductive cell (20) having a first terminal (30) and a second terminal (31) and having between this first and this second terminal an alternating periodic voltage, - an inverter / rectifier (23) capable of performing impedance matching of the impedance on the alternating input of this inverter / rectifier (23), independently of the impedance of the electrical energy storage unit (2),this inverter / rectifier (23) comprising two switching arms (24), each switching arm (24) comprising two controllable electronic switches (12) arranged on either side of a midpoint (25) of said first switching arm (24), one of these two electronic switches being a first electronic switch (12a) connected between the midpoint (25) of said arm and the positive terminal of the DC output of the inverter / rectifier and the other of these two electronic switches being a second electronic switch (12b) connected between the midpoint (25) of said arm and the negative terminal of the DC output of the inverter / rectifier (23), the electronic switches (12a,12b) said arms being controlled so as to: - apply an image (Irec) of the current (Is) flowing in the secondary inductive cell (20) to the DC output of the inverter / rectifier during a fraction of the positive or negative half-cycle of said current (Is) flowing in the secondary inductive cell (20), and - maintain a short circuit between the two midpoints (25) during the remainder of said positive or negative half-cycle of the current (Is) flowing in the secondary inductive cell (20). Abbreviated figure: Fig. 3,

Claims

22

15. Component for the electrical power supply of an electrical energy storage unit (2), comprising the electrical power supply circuit (1) according to claim 13, the component defining a structure rigidly coupling the primary sub-circuit (4) and the secondary sub-circuit (6) to each other.