US 11,789,091 B2
Fan fault detection device
Suk Ki Kim, Yongin-si (KR); Hyungho Kim, Yongin-si (KR); and Jeonghyup Ko, Yongin-si (KR)
Assigned to SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Nov. 13, 2020, as Appl. No. 17/97,532.
Claims priority of application No. 10-2019-0147178 (KR), filed on Nov. 15, 2019.
Prior Publication US 2021/0148995 A1, May 20, 2021
Int. Cl. G01R 31/56 (2020.01); H01M 10/42 (2006.01); F04D 27/00 (2006.01); H01M 10/613 (2014.01); H01M 10/6563 (2014.01); F04D 25/06 (2006.01)
CPC G01R 31/56 (2020.01) [F04D 25/0673 (2013.01); F04D 27/008 (2013.01); H01M 10/425 (2013.01); H01M 10/4285 (2013.01); H01M 10/613 (2015.04); H01M 10/6563 (2015.04); H01M 2010/4271 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A fan fault detection device comprising:
a plurality of sub-modules connected to a plurality of fans; and
a master module to determine faults of a plurality of fans,
wherein each of the plurality of sub-modules comprises:
a first input terminal to receive a detection signal from a corresponding fan indicating whether the corresponding fan is defective;
a second input terminal to receive a state signal from a previous sub-module or a first ground of a first power source;
an output terminal;
a first signal transmission circuit connected between the second input terminal and the output terminal to control transmission of the state signal between the second input terminal and the output terminal; and
a switching circuit connected to the first input terminal and connected between the first power source and the first signal transmission circuit to switch the transmission of the state signal of the first signal transmission circuit according to the detection signal, wherein:
in a first sub-module of the plurality of sub-modules, a second input terminal thereof is connected to a first ground, and
in a second sub-module of the plurality of sub-modules, an output terminal thereof is connected to the master module, and a second input terminal thereof is connected to an output terminal of the first sub-module.