SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME
First Claim
1. A method of manufacturing a secondary battery having an electrode winding body that includes a positive electrode and a negative electrode, and has a non-rectangular shape in a planar view thereof, the manufacturing method comprising:
- forming an electrode precursor laminate by stacking a positive electrode precursor on a negative electrode precursor with a separator interposed therebetween; and
winding the electrode precursor laminate to form the electrode winding body, with the winding performed about a winding axis that is substantially parallel to an extending direction of a terminal element of the secondary battery,wherein the electrode precursor laminate has a comb-teeth shape in the planar view and the electrode winding body is a non-rectangular shape in the planar view thereof.
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Abstract
A method of manufacturing a secondary battery is provided for manufacturing a secondary battery that includes an electrode winding body formed of a positive electrode and a negative electrode, and having a non-rectangular shape in planar view. In this manufacturing method, a positive electrode precursor and a negative electrode precursor are stacked on each other with a separator interposed therebetween to form an electrode precursor laminate, which is wound to form the electrode winding body. Moreover, the electrode precursor laminate has a comb-teeth shape in planar view, and winding is performed such that a winding axis for winding is substantially parallel to an extending direction of a terminal element of the secondary battery, whereby the electrode winding body is made non-rectangular.
11 Citations
20 Claims
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1. A method of manufacturing a secondary battery having an electrode winding body that includes a positive electrode and a negative electrode, and has a non-rectangular shape in a planar view thereof, the manufacturing method comprising:
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forming an electrode precursor laminate by stacking a positive electrode precursor on a negative electrode precursor with a separator interposed therebetween; and winding the electrode precursor laminate to form the electrode winding body, with the winding performed about a winding axis that is substantially parallel to an extending direction of a terminal element of the secondary battery, wherein the electrode precursor laminate has a comb-teeth shape in the planar view and the electrode winding body is a non-rectangular shape in the planar view thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A secondary battery comprising:
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an electrode winding body including a positive electrode, a negative electrode, and a separator disposed therebetween, with the electrode winding body including a winding structure in which the positive electrode, the negative electrode, and the separator are integrally wound; and an exterior body that wraps the electrode winding body, wherein the secondary battery comprises a non-rectangular shape in a planar view thereof, and wherein a winding axis of the winding structure is substantially parallel to an extending direction of a terminal element of the secondary battery. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification