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US 12,062,816 B2Granted
Lithium primary battery having improved output characteristics, and manufacturing method therefor
AssigneeVitzrocell Co., Ltd.
InventorsChae-Bong Lee, Se-Yong Park, Ji-Hyeok Jang, Sung-Hoon Jung
Life of this patent
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Abstract
Provided are a lithium primary battery in which a structure of an electrode closely related to output characteristics of the battery is improved to expand a reaction area, thus improving the output characteristics of the battery, and a method for manufacturing the lithium primary battery.
Claims11
A lithium primary battery having improved output characteristics, the lithium primary battery comprising:
- a case comprising an open top and having an electrolyte impregnated therein;
- a lithium anode attached to an inner wall of the case;
- a cathode disposed in an inner center portion of the case;
- a separator disposed between the lithium anode and the cathode;
- and
- a header covering the top of the case to seal the case,
- wherein the cathode is wound and comprises:
- a cathode collector wound at least twice to form a hollow in an inner center portion of the cathode collector, with a cathode active material layer coated onto at least a surface of the cathode collector, and a current collector electrically connected to a header pin engaged with the header, and
- wherein the lithium anode and the separator are not wound.
6 more elements
A method for manufacturing a lithium primary battery, the method comprising:
- (a) attaching a lithium anode and a separator to an inner wall of a case having an open top;
- (b) inserting a wound cathode wound at least twice into an inner center portion of the case having the lithium anode and the separator attached thereto;
- and
- (c) after welding the top of the case with a header, injecting an electrolyte into the case through an electrolyte inlet of the header and sealing the case,
- wherein the wound cathode is wound and inserted into the inner center portion of the case, and the lithium anode and the separator are not wound.
2 more elements
Dependencies are inferred from the claim text.