Fuse for lithium-ion cell and lithium-ion cell including the fuse
First Claim
1. A fuse device for a lithium-ion battery, the fuse device comprising a weak circuit portion between an external input/output port and a bare cell, the weak circuit portion being formed as a part of a conductive pattern on a circuit board.
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Accused Products
Abstract
A fuse device for a lithium-ion battery and a lithium-ion battery using the fuse device. The fuse device includes a weak circuit portion within a conductive pattern located on a circuit board between an external input/output port and a bare cell. Instead of a conventional current fuse, a pattern of the circuit board is used as an overvoltage protection member. With a circuit board pattern instead of a conventional fuse, it is possible to utilize the maximum battery capacity. Further, a lead-free pattern can be used
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Citations
20 Claims
- 1. A fuse device for a lithium-ion battery, the fuse device comprising a weak circuit portion between an external input/output port and a bare cell, the weak circuit portion being formed as a part of a conductive pattern on a circuit board.
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10. A protection circuit board for a lithium-ion battery having a positive terminal and a negative terminal, the protection circuit board comprising:
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a positive inpuvoutput port;
a negative inpuvoutput port; and
a charge/discharge controller for controlling the charging and discharging of the lithium-ion battery, the charge/discharge controller coupling the battery between the positive input/output port and the negative input/output port, the charge/discharge controller including a fuse device coupled between the positive input/output port and the positive terminal of the lithium-ion battery, and the fuse device being formed from a weak circuit portion in a conductive pattern formed on the protection circuit board;
wherein the negative inpuvoutput port is coupled to the negative terminal of the lithium-ion battery through a switching control circuit. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A lithium-ion battery comprising:
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a bare cell; and
a protection circuit board formed on a printed circuit board, the protection circuit board being coupled to the bare cell, wherein the protection circuit board includes a fuse device formed from a weak circuit portion of the printed circuit board. - View Dependent Claims (17, 18, 19, 20)
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Specification