CHARGING/DISCHARGING CONTROL DEVICE AND BATTERY DEVICE
First Claim
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1. A charging/discharging control device protecting a secondary battery, comprising:
- an overcharge detection circuit configured to detect overcharging;
a protective element provided with a heating resistor and a fuse element; and
a control switch configured to allow a current to flow through the heating resistor when the overcharge detection circuit detects the overcharging,the absolute value of a threshold voltage to turn ON the control switch being equal to or greater than a minimum operating voltage of the overcharge detection circuit and less than an overcharge detection voltage.
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Accused Products
Abstract
To provide a battery device which blows out a fuse element as a protective element only when overcharging and overcurrent of a secondary battery are detected, and prevents false blowing. The absolute value of a threshold voltage to turn ON a control switch connected to a heating resistor for blowing out the fuse element is set to be equal to or greater than a minimum operating voltage of an overcharge detection circuit and less than an overcharge detection voltage thereof.
5 Citations
2 Claims
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1. A charging/discharging control device protecting a secondary battery, comprising:
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an overcharge detection circuit configured to detect overcharging; a protective element provided with a heating resistor and a fuse element; and a control switch configured to allow a current to flow through the heating resistor when the overcharge detection circuit detects the overcharging, the absolute value of a threshold voltage to turn ON the control switch being equal to or greater than a minimum operating voltage of the overcharge detection circuit and less than an overcharge detection voltage. - View Dependent Claims (2)
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Specification
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Current AssigneeAblic Inc. (MinebeaMitsumi Inc.)
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Original AssigneeSeiko Instruments Incorporated (Seiko Group)
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InventorsMAETANI, Fumihiko
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Application NumberUS14/862,639Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current1/1CPC Class CodesH02J 7/00302 Overcharge protectionH02J 7/0031 using battery or load disco...
