LITHIUM SECONDARY BATTERY
First Claim
1. A lithium secondary battery, comprising:
- an internal electrode body including a positive electrode, a negative electrode, and a separator, the positive electrode and the negative electrode being wound or laminated via the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other;
an organic electrolyte; and
at least a plurality of tabs to be connected to each of the positive and negative electrodes for current collecting, the tabs having a total cross-sectional area of the tabs be not less than a constant area in accordance with the quality of the material to be used for the tabs so that the tabs to be connected to each of the positive and negative electrodes may not fuse when at least 100 A current flows through the lithium secondary battery.
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Accused Products
Abstract
A lithium secondary battery includes an internal electrode body including a positive electrode, a negative electrode, and a separator. The positive electrode and the negative electrode are wound or laminated via the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other. At least a plurality of tabs for current collecting were provided to have a total cross-sectional area of the tabs be not less than a constant area in accordance with the quality of the material to be used for the tabs so that the tabs to be connected to each of the positive and negative electrodes may not respectively fuse when at least 100 A current has flown through the lithium secondary battery. The lithium secondary battery maintains a good charge-discharge cycle characteristics, and safety may be secured with electricity being cut off when an excess current has occurred due to external short circuit, etc., so that the battery may not be exploded nor be ignited. In particular, the lithium secondary battery may be preferably used for driving a motor of an electric vehicle, etc.
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Citations
21 Claims
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1. A lithium secondary battery, comprising:
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an internal electrode body including a positive electrode, a negative electrode, and a separator, the positive electrode and the negative electrode being wound or laminated via the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other;
an organic electrolyte; and
at least a plurality of tabs to be connected to each of the positive and negative electrodes for current collecting, the tabs having a total cross-sectional area of the tabs be not less than a constant area in accordance with the quality of the material to be used for the tabs so that the tabs to be connected to each of the positive and negative electrodes may not fuse when at least 100 A current flows through the lithium secondary battery. - View Dependent Claims (2, 3, 4, 5, 6, 10, 12, 14, 16, 18, 20)
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7. A lithium secondary battery, comprising:
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an internal electrode body including a positive electrode, a negative electrode, and a separator, the positive electrode and the negative electrode being wound or laminated via a separator so that the positive electrode and the negative electrode are not brought into direct contact with each other;
an organic electrolyte; and
at least a plurality of tabs to be connected to each of the positive and negative electrodes for current collecting, wherein the tabs function as current fuses. - View Dependent Claims (8, 9, 11, 13, 15, 17, 19, 21)
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Specification