Secondary battery and method for manufacturing the same
AssigneeSK Innovation Co., Ltd.
InventorHee-Gyoung KANG
Life of this patent
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Abstract
Disclosed are a secondary battery and a method for manufacturing the same. According to an embodiment of the present invention, there is provided a secondary battery, including: an exterior material which includes a pouch film and a sealing portion formed at an outer side of the pouch film; and an electrode assembly which includes a plurality of electrode bodies laminated with a separator interposed therebetween and are packaged by the exterior material, wherein a pair of forming portions are formed within the pouch film to house the electrode assembly, and a predetermined interval is formed between the pair of forming portions.
Claims20
A method of manufacturing a secondary battery, the method comprising:
- preparing an exterior material comprising a pair of forming portions, a sealing portion, an interval disposed between the pair of forming portions, a first boundary between the interval and one of the forming portions and a second boundary between the interval and the other forming portion, wherein the first and second boundaries are facing each other;
- providing electrode tabs connected to an electrode assembly through welding portions disposed outside of the forming portions;
- and
- folding the exterior material over the electrode assembly using the first boundary and the second boundary to enclose the electrode assembly.
A method of manufacturing a secondary battery, the method comprising:
- preparing an exterior material comprising a sealing portion, first and second forming portions having first and second depths, respectively, the first and second forming portions being spaced apart by an interval sharing a first boundary with the first forming portion and a second boundary with the second forming portion;
- providing electrode tabs connected to an electrode assembly through welding portions;
- folding the exterior material over the electrode assembly to enclose the electrode assembly;
- and
- sealing the sealing portion to form three sealed sides and one non-sealed side, the non-sealed side including the interval,
- wherein an interior of the interval between the first boundary and the second boundary is not folded during the folding of the exterior material, and
- wherein at least one sealed side that does not face the non-sealed side is provided with the electrode tabs.
A method of manufacturing a secondary battery, the method comprising:
- preparing an exterior material comprising a pair of forming portions, a sealing portion, an interval disposed between the pair of forming portions, a first boundary between the interval and one of the forming portions and a second boundary between the interval and the other forming portion, wherein the first and second boundaries are facing each other;
- providing electrode tabs connected to an electrode assembly through welding portions;
- placing the electrode assembly on the external material before the folding of the external material, and wherein when placing the electrode assembly on the external material, a thickness of the electrode assembly is larger than a sum of a depth of the first forming portion and a depth of the second forming portion;
- folding the exterior material over the electrode assembly using the first boundary and the second boundary to enclose the electrode assembly;
- and
- sealing the sealing portion of the exterior material after folding the exterior material to form three sealed sides and one non-sealed side.
Dependencies are inferred from the claim text.