Battery pack, charging device, and electronic device
AssigneeCanon Kabushiki Kaisha
InventorIsao Hayashi
Life of this patent
Estimating the term…
Abstract
A charging device which enables the charged state and remaining capacity of the battery pack to be accurately grasped. In the charging device on which a battery pack including a nonvolatile memory and a secondary battery cell is mounted, a charge control microcomputer measures a charging current supplied to and a charging voltage applied to the battery pack. Charged state data indicative of the charged state of the battery pack is determined based on at least one of the measured charging current and the measured charging voltage. The charge control microcomputer writes the determined charged state data in the memory of the battery pack.
Claims25
A charging device on which a battery pack including a memory and a secondary battery is mounted, comprising:
- a charging current-measuring unit configured to measure a charging current supplied to the battery pack;
- a charging voltage-measuring unit configured to measure a charging voltage applied to the battery pack;
- a charged state data-determining unit configured to determine charged state data indicative of a charged state of the battery pack, based on at least one of the measured charging current and the measured charging voltage;
- and
- a writing unit configured to write the determined charged state data in the memory of the battery pack.
An electronic device on which a battery pack including a memory and a secondary battery is mounted, comprising:
- an output voltage-measuring unit configured to measure an output voltage from the battery pack;
- a charged state data-determining unit configured to determine charged state data indicative of a charged state of the battery pack, based on the measured output voltage;
- and
- a writing unit configured to write the determined charged state data in the memory of the battery pack.
A battery pack for being mounted on a charging device that determines charged state data indicative of a charged state of the battery pack based on at least one of a charging current supplied to and a charging voltage applied to the battery pack,
- wherein the battery pack includes a memory in which the determined charged state data is written.
A battery pack for being mounted on an electronic device that determines charged state data indicative of a charged state of the battery pack based on an output voltage from the battery pack mounted thereon,
- wherein the battery pack includes a memory in which the determined charged state data is written.
A method of controlling a charging device on which a battery pack including a memory and a secondary battery is mounted, comprising:
- a charging current-measuring step of measuring a charging current supplied to the battery pack;
- a charging voltage-measuring step of measuring a charging voltage applied to the battery pack;
- a charged state data-determining step of determining charged state data indicative of a charged state of the battery pack, based on at least one of the measured charging current and the measured charging voltage;
- and
- a writing step of writing the determined charged state data in the memory of the battery pack.
A method of controlling an electronic device on which a battery pack including a memory and a secondary battery is mounted, comprising:
- an output voltage-measuring step of measuring an output voltage from the battery pack;
- a charged state data-determining step of determining charged state data indicative of a charged state of the battery pack, based on the measured output voltage;
- and
- a writing step of writing the determined charged state data in the memory of the battery pack.
A computer-readable program for causing a computer to execute a method of controlling a charging device on which a battery pack including a memory and a secondary battery is mounted,
- wherein the method comprises:
- a charging current-measuring step of measuring a charging current supplied to the battery pack;
- a charging voltage-measuring step of measuring a charging voltage applied to the battery pack;
- a charged state data-determining step of determining charged state data indicative of a charged state of the battery pack, based on at least one of the measured charging current and the measured charging voltage;
- and
- a writing step of writing the determined charged state data in the memory of the battery pack.
A computer-readable program for causing a computer to execute a method of controlling an electronic device on which a battery pack including a memory and a secondary battery is mounted,
- wherein the method comprises:
- an output voltage-measuring step of measuring an output voltage from the battery pack;
- a charged state data-determining step of determining charged state data indicative of a charged state of the battery pack, based on the measured output voltage;
- and
- a writing step of writing the determined charged state data in the memory of the battery pack.
Dependencies are inferred from the claim text.