公开(公告)号：US20220301795A1

公开(公告)日：2022-09-22

申请号：US17641738

申请日：2020-08-18

Applicant: GS Yuasa International Ltd.

Inventor： Akihito UMEDA ,  Takeyuki SHIRAISHI

IPC: H01H47/00 ,  H01H47/22

Abstract: A protective device includes a relay having a contact that opens and closes a current path of a cell, and a control device that controls the relay. The control device executes a reduction processing of reducing a contact resistance of the relay.

公开(公告)号：US20250015608A1

公开(公告)日：2025-01-09

申请号：US18570941

申请日：2022-04-27

Applicant: GS Yuasa International Ltd.

Inventor： Akihito UMEDA ,  Yuki IMANAKA

IPC: H02J7/00 ,  H01M10/42 ,  H01M10/44 ,  H01M10/48

Abstract: An energy storage apparatus 1 that is connected to a vehicle 2 includes: a plurality of energy storage cells 30A; a balancer circuit 38 that makes each of the plurality of energy storage cells 30A individually discharge electricity; a voltage sensor 35 that detects a voltage of each of the energy storage cells 30A; and a management unit 37. The management unit 37 performs: request processing (S103) where the management unit 37 requests the vehicle 2 to charge the energy storage apparatus 1 with electricity when a predetermined condition for reducing a difference in electric amount between the energy storage cells 30A is satisfied; and reducing processing (S106) where, after the energy storage apparatus 1 is charged with electricity by the vehicle 2, a voltage of each of the energy storage cells 30A is detected by the voltage sensor 35, and an operation time of the balancer circuit 38 is changed corresponding to a difference between detected voltages so as to reduce a difference in amount of electricity between the energy storage cells 30A.