Battery charger with charge abnormality checking function
First Claim
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1. A battery charger comprising:
- a battery connecting section to which a secondary battery to be recharged is connectable;
a charge circuit configured to charge the secondary battery;
a current detecting section configured to detect current flowing in the charge circuit while charging the secondary battery has been prohibited;
a first signal outputting section configured to output a signal to prohibit charging when a charging parameter is detected; and
a second signal outputting section configured to output an abnormality signal when the current detecting section detects the current while charging the secondary battery has been prohibited.
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Abstract
A battery charger has an abnormal condition checking function for checking unintentional or accidental charging of a secondary battery. A charge circuit charges the battery when a switching element interposed between a power source and the battery is turned on. Current which may flow in the charge circuit is detected when the battery is not to be charged by turning the switching element on. When the current is detected in such a condition, an abnormality signal is produced to cause the charge circuit to be disabled.
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Citations
7 Claims
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1. A battery charger comprising:
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a battery connecting section to which a secondary battery to be recharged is connectable; a charge circuit configured to charge the secondary battery; a current detecting section configured to detect current flowing in the charge circuit while charging the secondary battery has been prohibited; a first signal outputting section configured to output a signal to prohibit charging when a charging parameter is detected; and a second signal outputting section configured to output an abnormality signal when the current detecting section detects the current while charging the secondary battery has been prohibited. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification