Battery current collector comprising metal plate having through holes and porous reinforcing material that fills through holes, and secondary battery comprising same
AssigneeLG Energy Solution, Ltd.
InventorsYo Han Ko, Jung Noh Lee, Jong Pil Park
Life of this patent
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Abstract
The present invention relates to: a current collector comprising a metal plate having a plurality of through holes formed in the thickness direction, and a porous reinforcing material filling the through holes of the metal plate; and a secondary battery comprising the current collector, and provides the effects of increasing ion conductivity of the current collector in the thickness direction and preventing stress from being concentrated at a specific part.
Claims14
A current collector for a battery, comprising:
- a metal plate having a plurality of through holes in a thickness direction;
- and
- a porous reinforcing material filled in at least one of the plurality of through holes,
- wherein
- an electrode active material is disposed on the current collector,
- the electrode active material incudes a compound that is not included in the porous reinforcing material, and
- the porous reinforcing material includes a porous polymer substrate and a porous coating layer disposed on one or both surfaces of the porous substrate.
A secondary battery comprising an electrode assembly having a plurality of unit cells wherein each of the unit cell includes a positive electrode, a first separator, and a negative electrode in an order listed, and a second separator is interposed between the unit cells,
- wherein at least one of the positive electrode or the negative electrode comprises:
- a metal plate having a plurality of through holes in a thickness direction,
- a porous reinforcing material filled in at least one of the plurality of through holes, and
- an electrode active material disposed on the current collector,
- wherein the electrode active material incudes a compound that is not included in the porous reinforcing material, and
- the porous reinforcing material includes a porous polymer substrate and a porous coating layer disposed on one or both surfaces of the porous substrate.
A current collector for a battery, comprising:
- a metal plate having a plurality of through holes in a thickness direction;
- and
- a porous reinforcing material filled in at least one of the plurality of through holes,
- wherein the porous reinforcing material includes a porous polymer substrate and a porous coating layer disposed on one or both surfaces of the porous substrate.
Dependencies are inferred from the claim text.