US 12,077,111 B2
In-vehicle power supply structure
Sadahisa Yamada, Hiroshima (JP); Yoshimasa Kurokawa, Hiroshima (JP); Tetsuhiro Yamashita, Hiroshima (JP); and Masaaki Shimizu, Hiroshima (JP)
Assigned to MAZDA MOTOR CORPORATION, Hiroshima (JP)
Appl. No. 17/623,624
Filed by Mazda Motor Corporation, Hiroshima (JP)
PCT Filed Jul. 8, 2020, PCT No. PCT/JP2020/026690
§ 371(c)(1), (2) Date May 26, 2022,
PCT Pub. No. WO2021/010253, PCT Pub. Date Jan. 21, 2021.
Claims priority of application No. 2019-133117 (JP), filed on Jul. 18, 2019.
Prior Publication US 2022/0289128 A1, Sep. 15, 2022
Int. Cl. B60R 16/03 (2006.01); B60R 16/02 (2006.01); G01R 31/50 (2020.01); H01B 7/32 (2006.01)
CPC B60R 16/03 (2013.01) [B60R 16/0215 (2013.01); G01R 31/50 (2020.01); H01B 7/32 (2013.01)] 3 Claims
OG exemplary drawing
 
1. An in-vehicle power supply structure in which a vehicle is divided into a plurality of zones, a power supply hub for connecting an electronic device is provided in each of the zones, and the power supply hubs are connected through power supply wires, to form a ring-shaped power supply route, the power supply hubs including two first power supply hubs adjacent to each other; and two second power supply hubs adjacent to each other at positions apart from the two first power supply hubs, the structure comprising:
a main battery connected to a power supply wire that connects the two first power supply hubs to each other in the ring-shaped power supply route;
an auxiliary battery connected to a power supply wire that connects the two second power supply hubs to each other in the ring-shaped power supply route; and
a break detection wire routed along the power supply wires, for detecting damage to the power supply wires caused by an external force acting on the vehicle by its own damage,
wherein
the break detection wire is configured to connect the power supply hubs placed adjacent to each other,
each of the power supply hubs includes a relay configured to perform connection/disconnection the ring-shaped power supply route, and
the in-vehicle power supply structure is configured so that, in response to a detected break of the break detection wire, the relays of the power supply hubs placed on both sides of and adjacent to a position of the detected break are both disconnected.