| 摘要 |
A battery device includes a battery cell including a cell terminal, a case that houses the battery cell, a battery terminal provided to the case and electrically connected to the cell terminal, and a control section that is housed in the case and allows and inhibits charge and discharge of the battery cell, wherein the control section includes a detection section that detects an output voltage value of the cell terminal at an interval, and assuming that the latest output voltage value detected by the detection section is V 1 , and the output voltage value detected by the detection section immediately before the latest output voltage value V 1 is V 0 , the control section allows charge and discharge of the battery cell if |DeltaV| (DeltaV=V 1 -V 0 ) is smaller than a reference value, and to inhibit charge and discharge of the battery cell if |DeltaV| is equal to and greater than the reference value.
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