PROTECTIVE CIRCUIT MODULE AND BATTERY PACK
First Claim
1. A battery pack comprising:
- a protective circuit;
a charge control switch; and
a discharge control switch,wherein the charge control switch and the discharge control switch are electrically connected to the protective circuit, andwherein the charge control switch and the discharge control switch each comprise a transistor comprising an oxide semiconductor.
1 Assignment
0 Petitions
Accused Products
Abstract
Leakage current of a transistor used for a current interruption switch in a protective circuit of a battery pack is reduced, and a protective circuit module and a battery pack which have high safety and long lifetime can be provided. The protective circuit module includes a protective circuit, a charge control switch, and a discharge control switch. The charge control switch and the discharge control switch are connected to the protective circuit; the protective circuit detects voltage of the secondary battery, compares the voltage with a predetermined voltage, and outputs a control signal in accordance with the comparison result, so that the charge control switch or the discharge control switch is turned on or tuned off; and the charge control switch and the discharge control switch each include a transistor including an oxide semiconductor and a diode connected in parallel to the transistor including the oxide semiconductor.
28 Citations
18 Claims
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1. A battery pack comprising:
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a protective circuit; a charge control switch; and a discharge control switch, wherein the charge control switch and the discharge control switch are electrically connected to the protective circuit, and wherein the charge control switch and the discharge control switch each comprise a transistor comprising an oxide semiconductor. - View Dependent Claims (2, 3, 4, 5)
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6. A battery pack comprising:
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a secondary battery; a protective circuit; a charge control switch; and a discharge control switch, wherein the charge control switch and the discharge control switch are electrically connected to the protective circuit, wherein the charge control switch and the discharge control switch each comprise a transistor comprising an oxide semiconductor, and wherein the protective circuit is configured to detect voltage of the secondary battery, compare the voltage with a predetermined voltage, and output a control signal in accordance with a comparison result, so that the charge control switch or the discharge control switch is turned on or turned off. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A battery pack comprising:
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a protective circuit; a charge control switch; and a discharge control switch, wherein the charge control switch and the discharge control switch each comprise a transistor comprising an oxide semiconductor, and wherein the charge control switch and the discharge control switch are stacked over the protective circuit. - View Dependent Claims (15, 16, 17, 18)
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Specification