US 12,454,234 B2
In-vehicle device
Yuta Taninaka, Yokkaichi (JP); Masaya Ina, Yokkaichi (JP); Kota Oda, Yokkaichi (JP); and Ryosuke Masuda, Yokkaichi (JP)
Assigned to AutoNetworks Technologies, Ltd., Yokkaichi (JP); Sumitomo Wiring Systems, Ltd., Yokkaichi (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
Appl. No. 18/572,072
Filed by AutoNetworks Technologies, Ltd., Yokkaichi (JP); Sumitomo Wiring Systems, Ltd., Yokkaichi (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
PCT Filed Jun. 13, 2022, PCT No. PCT/JP2022/023607
§ 371(c)(1), (2) Date Dec. 19, 2023,
PCT Pub. No. WO2023/276632, PCT Pub. Date Jan. 5, 2023.
Claims priority of application No. 2021-109476 (JP), filed on Jun. 30, 2021.
Prior Publication US 2024/0286565 A1, Aug. 29, 2024
Int. Cl. G01R 31/74 (2020.01); B60R 16/03 (2006.01); H01H 85/02 (2006.01); H01H 85/46 (2006.01); H02H 3/04 (2006.01)
CPC B60R 16/03 (2013.01) [G01R 31/74 (2020.01); H01H 85/0241 (2013.01); H01H 85/46 (2013.01); H02H 3/046 (2013.01); H01H 2085/0283 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An in-vehicle device comprising:
a fuse;
an upstream capacitor having one end connected to a connection node located upstream of the fuse in a current path of current that flows through the fuse;
a downstream capacitor having one end connected to a connection node located downstream of the fuse in the current path;
an upstream reduction circuit configured to reduce a peak value of the upstream voltage;
a downstream reduction circuit configured to reduce a peak value of the downstream voltage; and
a determiner configured to determine whether or not the fuse is blown based on an upstream voltage that passed through the upstream capacitor and a downstream voltage that passed through the downstream capacitor, and wherein the determiner determines whether or not the fuse is blown based on the upstream voltage whose peak value was reduced by the upstream reduction circuit and the downstream voltage whose peak value was reduced by the downstream reduction circuit.