Patent ID: 11942808
Assignee: GS YUASA INTERNATIONAL LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 10:
11. A discharge method of an energy storage device, comprising:
opening, when a state of charge of the energy storage device drops below a predetermined threshold value, a circuit breaker connected in series with the energy storage device to protect the energy storage device from overdischarging, wherein the energy storage device is housed in a housing; and
releasing protection of the energy storage device when a discharge instruction to discharge remaining electric power of the energy storage device is received by a reception unit, wherein the reception unit receives the discharge instruction from outside the housing in a non-contact manner, wherein
the reception unit includes
a transmission part that is provided in the housing and that transmits light outside the housing to an inside of the housing,
a detachable shield member that covers the transmission part from an outside of the housing, and
a photoelectric switch which is provided inside the housing and is turned on by receiving the light transmitted through the transmission part, and

the reception unit outputs an electric signal to a management unit which executes the opening and the releasing protection, when the photoelectric switch is turned on.