US 12,128,776 B2
Electronic circuit breaker with self-triggering protection for a vehicle, and a method therefor
Georgios Papadopoulos, Edessa (GR); Carl Tengstedt, Grödinge (SE); Jens Gustavsson, Strängnäs (SE); Christer Roos, Rönninge (SE); and Hans-Peter Nee, Bro (SE)
Assigned to Scania CV AB, Södertälje (SE)
Appl. No. 17/638,963
Filed by Scania CV AB, Södertälje (SE)
PCT Filed Sep. 3, 2020, PCT No. PCT/SE2020/050833
§ 371(c)(1), (2) Date Feb. 28, 2022,
PCT Pub. No. WO2021/045669, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 1951011-4 (SE), filed on Sep. 5, 2019.
Prior Publication US 2022/0340020 A1, Oct. 27, 2022
Int. Cl. H02H 3/00 (2006.01); B60L 3/04 (2006.01); B60L 50/64 (2019.01); H02H 3/087 (2006.01)
CPC B60L 50/64 (2019.02) [B60L 3/04 (2013.01); H02H 3/087 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An electronic circuit breaker with self-triggering protection for a vehicle, comprising:
an input configured to be connected to an electric direct current (DC) power supply;
an output configured to be connected to a load;
a switch connected between the input and the output, wherein said switch is controlled via a switch control line between an “ON”-state and an “OFF”-state;
a switch driver connected to the switch control line, said switch driver is configured to control the switch; and
a switch protection connected between the input and the output and parallel with the switch, said switch protection is further connected to the switch control line, wherein the switch protection comprises:
an over-voltage protection branch extending from the input to the output;
a voltage detection branch extending from the input to the output and configured to output a first electric potential indicative of the electrical potential difference between the input and the output;
a comparator circuit configured to compare the first electrical potential with a first threshold voltage, said first threshold voltage is indicative of an over-current level flowing through the switch, which over-current causes a voltage drop over the switch, said comparator circuit outputs a switch disable signal via a switch disable line upon detecting that the first electrical potential is above the first threshold voltage; and
a gate controller connected to the switch disable line and configured to disable the switch by connecting the switch control line to a potential which causes the switch to enter the “OFF”-state.