公开(公告)号：US20240275202A1

公开(公告)日：2024-08-15

申请号：US18569626

申请日：2022-08-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUTA NAGATOMI ,  MASAFUMI NAKAMURA ,  MASATOSHI NAKASE ,  HIROKI AKASHI ,  KINYA KATO

IPC: H02J9/06 ,  H02J7/00 ,  H02J7/34

CPC classification number: H02J9/061 ,  H02J7/00714 ,  H02J7/34 ,  H02J2207/20

Abstract: A backup power supply system (1) includes a first terminal (T1), a second terminal (T2), a disconnect device (10), a current detector (20), a charge/discharge device (30), an auxiliary power supply (40), and a controller (50). The disconnect device (10) is connected between the first terminal (T1) configured to be connected to a main power supply (2) and the second terminal (T2) configured to be connected to a load (3). The charge/discharge device (30) is connected between the auxiliary power supply (40) and a node (P1) between the disconnect device (10) and the second terminal (T2). The charge/discharge device (30) is configured to receive power supplied from main power supply (2) to cause a charging current to flow to the auxiliary power supply (40) in a non-defective state in which the main power supply (2) is not defective. The charge/discharge device (30) is configured to receive power supplied from the auxiliary power supply (40) to cause a discharging current to flow to the load (3) in a defective state. The controller (50) is configured to have the disconnect device (10) be in a connecting state while the current detector (20) does not detect the discharging current, and to have the disconnect device (10) be in a disconnecting state while the current detector (20) detects the discharging current.

公开(公告)号：US20240313765A1

公开(公告)日：2024-09-19

申请号：US18571215

申请日：2022-06-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIROKI AKASHI ,  YOHSUKE MITANI ,  YUTA NAGATOMI ,  MASAFUMI NAKAMURA ,  MASATOSHI NAKASE ,  KINYA KATO ,  YASUHIRO IIJIMA

IPC: H03K17/30 ,  H03K17/06 ,  H03K17/081

CPC classification number: H03K17/302 ,  H03K17/063 ,  H03K17/08104 ,  H03K2217/0081

Abstract: In a backup power supply system according to the present invention, in a non-defective state in which a main power supply is not defective, a controller turns on a first field-effect transistor and causes a third field-effect transistor to operate in an active region so as to charge the power storage device from the main power supply via a charging path through the first field-effect transistor, the second field-effect transistor, and the third field-effect transistor. In a defective state in which the main power supply is defective, the controller turns off the first field-effect transistor and turns on the second field-effect transistor and the third field-effect transistor so as to supply power from the power storage device to the load.