Cylindrical Secondary Battery and Manufacturing Method Thereof
AssigneeLG Energy Solution, Ltd.
InventorsSung Pil Yoon, Dong Myung Kim, Joo Hwan Sung
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Abstract
A cylindrical secondary battery includes an electrode assembly having a positive electrode/separator/negative electrode structure positioned in a cylindrical battery can. The cylindrical secondary battery comprises: a first insulating layer mounted at the upper end of the electrode assembly and having a first through hole through which the electrode tab penetrates, and a second insulating layer mounted at the upper end of the first insulating layer and having a second through hole formed to align with a central axis of the electrode assembly. A method of manufacturing the cylindrical secondary battery is also provided.
Claims10
A cylindrical secondary battery in which an electrode assembly having a positive electrode/separator/negative electrode structure is positioned in a cylindrical battery can, the cylindrical secondary battery comprising:
- a first insulating layer positioned at the upper end of the electrode assembly and having a first through hole through which the electrode tab extends;
- and
- a second insulating layer mounted at the upper end of the first insulating layer and having a second through hole positioned to align with a central axis of the electrode assembly.
A method of manufacturing a cylindrical secondary battery in which an electrode assembly having a positive electrode/separator/negative electrode structure is positioned in a cylindrical battery can, the method including the steps of:
- mounting a first insulating layer on an upper end of the electrode assembly and allowing an electrode tab connected to the electrode assembly to protrude upward through a first through hole defined in the first insulating layer;
- bending the electrode tab penetrating through the first through hole;
- and
- mounting a second insulating layer at the upper end of the first insulating layer,
- wherein the bent electrode tab penetrates through a second through hole defined in the second insulating layer.
Dependencies are inferred from the claim text.