US 11,936,285 B2
Switch system comprising a current-limiting device
Laurent Domenger, Creteil (FR); Panagiotis Giannikopoulos, Creteil (FR); and Hafid Ihaddaden, Creteil (FR)
Assigned to Valeo Equipements Electriques Moteur, Creteil (FR)
Appl. No. 17/415,205
Filed by Valeo Equipements Electriques Moteur, Creteil (FR)
PCT Filed Dec. 17, 2019, PCT No. PCT/EP2019/085546
§ 371(c)(1), (2) Date Jun. 17, 2021,
PCT Pub. No. WO2020/127196, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 1873516 (FR), filed on Dec. 20, 2018.
Prior Publication US 2022/0077763 A1, Mar. 10, 2022
Int. Cl. H02M 1/32 (2007.01); H02M 7/5387 (2007.01)
CPC H02M 1/32 (2013.01) [H02M 7/5387 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A switch system comprising:
a power line for supplying a charge from a voltage source, said power line comprising:
a main switch comprising a first main terminal and a second main terminal, between which a main current is intended to pass, and
a control terminal for selectively placing the main switch in a closed, open or semi-closed state, the main switch in the semi-closed state being equivalent to a variable resistor controlled by the control terminal and connected between the first and the second main terminal; and
a current-limiting device configured to, when the main current exceeds a maximum current threshold, decrease a control current entering the control terminal, so as to cause the main switch to transition from the closed state to the semi-closed state, so as to limit the main current,
wherein the power line further comprises a measurement resistor, through which the main current passes, and
wherein the current-limiting device comprises a first and a second terminal, said measurement resistor being connected between the first and the second terminal, and the current-limiting device is configured to vary the reduction in the control current as a function of a resistance voltage between the first and the second terminal, in order to place the main switch in the semi-closed position when the resistance voltage exceeds a threshold voltage.