Control unit, battery pack, and power supply device
AssigneeFdk Corporation
InventorsShunichiro Sugimori, Yusuke Kusagaya, Takashi Kabasawa
Life of this patent
Estimating the term…
Abstract
A battery indicator estimates a remaining battery capacity when a controller instructs a driving power source to start the power supply based on a battery voltage detected at a timing when the controller instructs the driving power source to start the power supply. The controller instructs the driving power source to stop the power supply after the discharge of a secondary battery by a charge-discharge circuit is ended and at a timing when a battery voltage being measured by a voltage measurer is stabilized.
Claims7
A control unit for controlling operation of a charge-discharge circuit that charges or discharges a secondary battery, the control unit comprising:
- a controller configured to control power supply for causing the charge-discharge circuit to operate;
- a driving power source that supplies drive power to the controller;
- a voltage measurer configured to measure a battery voltage of the secondary battery;
- and
- a battery indicator configured to estimate a remaining battery capacity of the secondary battery from the battery voltage of the secondary battery measured by the voltage measurer,
- wherein:
- the battery indicator estimates the remaining battery capacity when the controller instructs the driving power source to start power supply based on the battery voltage detected at a timing when the controller instructs the driving power source to start the power supply, and
- the controller instructs the driving power source to stop the power supply after the discharge of the secondary battery by the charge-discharge circuit is ended and at a timing when the battery voltage measured by the voltage measurer is stabilized.
A battery pack comprising:
- a secondary battery;
- a charge-discharge circuit that charges or discharges the secondary battery;
- and
- a control unit that controls operation of the charge-discharge circuit;
- wherein:
- the control unit includes:
- a controller configured to control power supply for causing the charge-discharge circuit to operate;
- a driving power source that supplies drive power to the controller;
- a voltage measurer configured to measure a battery voltage of the secondary battery;
- and
- a battery indicator configured to estimate a remaining battery capacity of the secondary battery from the battery voltage of the secondary battery measured by the voltage measurer,
- the battery indicator estimates the remaining battery capacity when the controller instructs the driving power source to start power supply based on the battery voltage detected at a timing when the controller instructs the driving power source to start the power supply, and
- the controller instructs the driving power source to stop the power supply after the discharge of the secondary battery by the charge-discharge circuit is ended and at a timing when the battery voltage measured by the voltage measurer is stabilized.
A power supply device comprising:
- a secondary battery;
- a charge-discharge circuit that charges or discharges the secondary battery;
- and
- a control unit that controls operation of the charge-discharge circuit;
- wherein:
- the control unit includes:
- a controller configured to control power supply for causing the charge-discharge circuit to operate;
- a driving power source that supplies drive power to the controller;
- a voltage measurer configured to measure a battery voltage of the secondary battery;
- and
- a battery indicator configured to estimate a remaining battery capacity of the secondary battery from the battery voltage of the secondary battery measured by the voltage measurer,
- the battery indicator estimates the remaining battery capacity when the controller instructs the driving power source to start power supply based on the battery voltage detected at a timing when the controller instructs the driving power source to start the power supply, and
- the controller instructs the driving power source to stop the power supply after the discharge of the secondary battery by the charge-discharge circuit is ended and at a timing when the battery voltage measured by the voltage measurer is stabilized.
Dependencies are inferred from the claim text.