US 12,113,380 B2
Pre-charge unit for charging a dc link capacitor and battery system including the same
Florian Maxl, Yongin-si (KR)
Assigned to SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Jul. 21, 2021, as Appl. No. 17/381,398.
Claims priority of application No. 20187208 (EP), filed on Jul. 22, 2020; and application No. 10-2021-0094192 (KR), filed on Jul. 19, 2021.
Prior Publication US 2022/0029427 A1, Jan. 27, 2022
Int. Cl. H02J 7/00 (2006.01); H02J 7/34 (2006.01); H05K 1/02 (2006.01); H05K 1/16 (2006.01)
CPC H02J 7/0013 (2013.01) [H05K 1/0201 (2013.01); H05K 1/167 (2013.01); H02J 7/345 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A pre-charge unit for charging a DC link capacitor, the pre-charge unit comprising:
a printed circuit board including at least one conductive layer;
a pre-charge switch on the printed circuit board; and
a pre-charge resistor electrically connected in series with the pre-charge switch, wherein the pre-charge resistor is formed by a conductive trace in the at least one conductive layer of the printed circuit board.