Charge controlling circuit
AssigneeKYOCERA Corporation
InventorNobuhito Yoshida
Life of this patent
Estimating the term…
Abstract
A charge controlling circuit controls charging of a lithium-ion rechargeable battery. An electric power supplied from an external charger to the lithium-ion rechargeable battery is taken by a charging terminal. When the charging terminal is connected to the external charger, whether or not a charge prohibition condition is satisfied is determined by a CPU. A charging operation is prohibited when the charge prohibition condition is satisfied, but is permitted when the charge prohibition condition is not satisfied. Here, the charge prohibition condition includes a shortest time condition that a time during which the charging terminal is detached from the external charger is above a defined time decided in view of an instantaneous power interruption.
Claims7
A charge controlling circuit comprising:
- a first determiner for determining whether or not a charging power supplied from an external charger to a secondary battery is present;
- a second determiner for determining whether or not a charge prohibition condition is satisfied when it is determined that a charging power supplied from said external charger to said secondary battery is present by said first determiner;
- a prohibiter for prohibiting a charging operation when it is determined that said charge prohibition condition is satisfied by said second determiner;
- and a permitter for permitting said charging operation when it is determined that said charge prohibition condition is not satisfied by said second determiner, wherein said charge prohibition condition includes a time condition which is determined by said first determiner that the charging power supplied from said external charger to said secondary battery is interrupted above a defined time including a predetermined time or more.
A storage medium being machine-readable by a processor of a charge controlling circuit, said storage medium stores a program which causes said processor to execute:
- a first determining step for determining whether or not a charging power supplied from an external charger to a secondary battery is present;
- a second determining step for determining whether or not a charge prohibition condition is satisfied when it is determined that a charging power supplied from said external charger to said secondary battery is present by said first determining step;
- a prohibiting step for prohibiting a charging operation when it is determined that said charge prohibition condition is satisfied by said second determining step;
- and a permitting step for permitting said charging operation when it is determined that said charge prohibition condition is not satisfied by said second determining step, wherein said charge prohibition condition includes a time condition that a time during which it is determined by said first determining step that the charging power supplied from said external charger to said secondary battery is interrupted above a defined time including a predetermined time or more.
A charge controlling method in a charge controlling circuit, including following steps of:
- a) determining whether or not a charging power supplied from an external charger to a secondary battery is present;
- b) determining whether or not a charge prohibition condition is satisfied when it is determined that a charging power supplied from said external charger to said secondary battery is present by said first determining step;
- c) prohibiting a charging operation when it is determined that said charge prohibition condition is satisfied by said second determining step;
- and d) permitting said charging operation when it is determined that said charge prohibition condition is not satisfied by said second determining step, wherein said charge prohibition condition includes a time condition that a time during which it is determined by said first determining step that the charging power supplied from said external charger to said secondary battery is interrupted above a defined time including a predetermined time or more.
Dependencies are inferred from the claim text.