Charge controlling circuit
View Patent ↗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.
1. 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.
2. A charge controlling circuit according to claim 1 , further comprising an activator for activating a timer when supply of said charging power is interrupted; and a stopper for stopping said timer when supply of said charging power is started, wherein
the time defining said time condition corresponds to a counted time by said timer.
3. A charge controlling circuit according to claim 1 , wherein said charge prohibition condition further includes a power source condition that a present time belongs to a period from a power-on operation to a power-off operation.
4. A charge controlling circuit according to claim 1 , wherein said charge prohibition condition further includes a voltage condition that a voltage of said secondary battery is above a threshold value.
5. A mobile terminal comprising a charge controlling circuit according to claim 1 .
6. 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.
7. 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.