Back to results
US 2023/0155219 A1Published application
Secondary Battery with Anti-Corrosion Layer on Inner Surface of Battery Case
AssigneeLG Energy Solution, Ltd.
InventorsHyunwoong Yun, Sungjoong Kang
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a secondary battery in which an anti-corrosion layer of an organic/inorganic mixed layer is formed on a part of an inner surface of the battery case of a cylindrical secondary battery and the battery case of a prismatic secondary battery.
Claims16
A cylindrical secondary battery, that comprising:
- a battery case;
- an electrode assembly including a positive electrode, a separator, and a negative electrode is housed in the battery case together with an electrolyte solution;
- and
- an anti-corrosion layer,
- wherein the battery case is made of metal, and comprises a cylindrical can that includes a housing part in which the electrode assembly and the electrolyte solution are housed together and a beading part located at an upper part of the housing part;
- and a cap assembly that is mounted on an open upper end part of the cylindrical can and includes an upper end cap having a protrusion-type electrode terminal, and
- wherein the anti-corrosion layer is an organic-inorganic mixed layer coating an inner surface of the housing part where the housing part contacts the electrolyte solution, or coating the inner surface of the housing part and the beading part.
4 more elements
A prismatic secondary battery, comprising:
- a battery case;
- an electrode assembly including a positive electrode, a separator, and a negative electrode housed in the battery case together with an electrolyte solution;
- and
- an anti-corrosion layer,
- wherein the battery case is made of metal, and comprises a rectangular can body that has an open upper end and houses the electrode assembly and the electrolyte solution together therein;
- and a top cap including cap terminals that are coupled and sealed to the upper end of the can body and are connected to electrode terminals of the electrode assembly, and
- wherein the anti-corrosion layer is an organic-inorganic mixed layer coating an inner surface of the can body where the can body contacts the electrolyte solution, or coating the inner surface of the can body and an inner surface of top cap excluding the cap terminals.
4 more elements
Dependencies are inferred from the claim text.