公开(公告)号：US11987191B2

公开(公告)日：2024-05-21

申请号：US17998651

申请日：2021-05-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yohsuke Mitani ,  Masatoshi Nakase

IPC: H02J7/34 ,  B60R16/033 ,  H02J9/00

CPC classification number: B60R16/033 ,  H02J7/345 ,  H02J9/002 ,  H02J2207/20

Abstract: A back-up power supply system (1) is configured to supply electric power from an electric storage device (5) to loads (3) when a power supply (2) is defective. The back-up power supply system (1) includes a first voltage conversion circuit (6) configured to convert an output voltage of the electric storage device (5). The loads (3) include a first load (31) and a second load (32). The back-up power supply system (1) is configured to supply power from the electric storage device (5) to the first load (31) not via the voltage conversion circuit (6), and to supply electric power from the electric storage device (5) to the second load (32) via the voltage conversion circuit (6).

公开(公告)号：US12184118B2

公开(公告)日：2024-12-31

申请号：US18257816

申请日：2021-12-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroki Akashi ,  Masafumi Nakamura ,  Masatoshi Nakase ,  Yuta Nagatomi ,  Kinya Kato

IPC: B60R16/033 ,  H02J7/00 ,  H02J7/34 ,  H02J9/06

Abstract: A backup power supply control system includes: a first semiconductor switch that switches a main power supply line to an electrically conductive state or an electrically non-conductive state; and an auxiliary power supply switch that switches an auxiliary power supply line to the electrically conductive state or the electrically non-conductive state. A first driving unit controls, in a non-failure state, a second semiconductor switch, connected between a gate and source of a first semiconductor switch, OFF and thereby controls the first semiconductor switch ON. The first driving unit ensures, in the failure state, at least a gate-plateau voltage of the first semiconductor switch as a drive voltage for the second semiconductor switch. When a failure detection unit detects the failure state, the first driving unit controls the first semiconductor switch OFF by controlling the second semiconductor switch ON and a second driving unit controls the auxiliary power supply switch ON.