US 12,348,078 B2
Backup power supply system and moving vehicle
Yuta Nagatomi, Osaka (JP); Masafumi Nakamura, Osaka (JP); Masatoshi Nakase, Osaka (JP); Hiroki Akashi, Osaka (JP); and Kinya Kato, Aichi (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 18/253,345
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Nov. 29, 2021, PCT No. PCT/JP2021/043704
§ 371(c)(1), (2) Date May 17, 2023,
PCT Pub. No. WO2022/114197, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 2020-199101 (JP), filed on Nov. 30, 2020.
Prior Publication US 2023/0420981 A1, Dec. 28, 2023
Int. Cl. H02J 9/06 (2006.01); B60L 3/00 (2019.01); B60R 16/033 (2006.01)
CPC H02J 9/061 (2013.01) [B60L 3/0046 (2013.01); B60R 16/033 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A backup power supply system configured to, when a power supply has caused a failure, supply power from a first electrical storage device to a plurality of loads,
the power supply being connected to not only a first power supply line but also the plurality of loads through the first power supply line,
the first electrical storage device being connected to not only a second power supply line connected to the first power supply line but also the plurality of loads through the first power supply line,
the plurality of loads including a first load and a second load both connected to the first power supply line,
the backup power supply system comprising:
a backflow prevention switch provided between the first load and the second load on the first power supply line and configured to make the first power supply line electrically conductive or non-conductive by turning ON and OFF,
a first detector circuit configured to, once detecting the failure caused by the power supply, output a result of detection as a detection result continuously and fixedly,
a second detector circuit configured to, whenever detecting the failure caused by the power supply, output a result of detection as a detection result; and
a first switch provided on the second power supply line and configured to make the second power supply line electrically conductive or non-conductive by turning ON and OFF, wherein:
the backflow prevention switch includes an internal diode having an anode connected to one side including the first load and a cathode connected to the other side including the second load,
the backflow prevention switch is turned ON when the detection results provided by the first detector circuit and the second detector circuit both indicate that the power supply has caused the failure and is turned OFF otherwise,
the first switch includes an internal diode having a cathode connected to one side including the first power supply line and an anode connected to the other side including the first electrical storage device, and
the first switch is turned ON when the detection results provided by the first detector circuit and the second detector circuit both indicate that the power supply has caused the failure and is turned OFF otherwise.