US 11,894,714 B2
Power source system
Takafumi Kawakami, Yokkaichi (JP); and Masayoshi Hirota, Yokkaichi (JP)
Assigned to AutoNetworks Technologies, Ltd., Yokkaichi (JP); Sumitomo Wiring Systems, Ltd., Yokkaichi (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
Appl. No. 17/754,193
Filed by AutoNetworks Technologies, Ltd., Yokkaichi (JP); Sumitomo Wiring Systems, Ltd., Yokkaichi (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
PCT Filed Sep. 27, 2019, PCT No. PCT/JP2019/038332
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/059523, PCT Pub. Date Apr. 1, 2021.
Prior Publication US 2022/0302739 A1, Sep. 22, 2022
Int. Cl. H02J 7/14 (2006.01); H02M 1/00 (2006.01); B60R 16/03 (2006.01)
CPC H02J 7/1423 (2013.01) [B60R 16/03 (2013.01); H02M 1/0009 (2021.05); H02J 2310/40 (2020.01)] 6 Claims
OG exemplary drawing
 
1. A power source system that is to be installed in a vehicle including a travel motor, and into which a charging current flows via a charging path when receiving supply of power from an external apparatus provided external to the vehicle, the power source system comprising:
a first conductive path and a second conductive path that are electrically connected to the charging path and branch from the charging path;
a relay that is provided on the first conductive path; and
a voltage conversion unit configured to perform voltage conversion,
wherein the first conductive path is formed as a path between the charging path and a battery,
the relay switches between an off state in which current is blocked from flowing between the charging path and the battery via the first conductive path, and an on state in which current is allowed to flow,
the second conductive path is disposed between the charging path and the voltage conversion unit,
the voltage conversion unit performs at least a first operation of stepping up a voltage applied to the second conductive path and applying the resulting voltage as an output voltage to a conductive path on the battery side, and a second operation of stepping down a voltage applied to the conductive path on the battery side and applying the resulting voltage as an output voltage to the second conductive path,
a first operation state where power from the battery is supplied to the motor side via the first conductive path and the relay is entered when the relay is on, and
a second operation state where power from the voltage conversion unit is supplied to the motor side via the second conductive path as a result of the voltage conversion unit performing the second operation is entered when the relay is off.