# US 12,763,433 B2 · All-solid-state battery including porous current collector and battery module including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,763,433 B2 - Document ID: US12763433B2 - Status: Granted - Kind: B2 - Application number: 18/014,499 - Filed: 2022-03-29 - Published: 2023-08-17 - Granted: 2026-10-13 - Earliest claimed: 2021-03-30 - Assignees: LG Energy Solution, Ltd. - Applicants: LG Energy Solution, Ltd. - Inventors: Jung Pil Lee; Jong Keon Yoon - Web page: https://patentgrep.com/patent/US12763433B2 ## CPC - H01M 50/474: characterised by their position inside the cells - H01M 50/242: adapted for protecting batteries against vibrations, collision impact or swelling - H01M 50/593: Spacers; Insulating plates - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY ## Abstract An all-solid-state battery includes a positive electrode, a negative electrode including a negative electrode current collector having a porous structure, a solid electrolyte layer located between the positive electrode and the negative electrode, a stopper disposed at an outer periphery of the negative electrode, a battery case, and a pressing member. ## Claims ### Claim 1 An all-solid-state battery comprising: a positive electrode comprising a positive electrode current collector coated with a positive electrode material mixture layer; a negative electrode comprising a negative electrode current collector having a porous structure; a solid electrolyte layer located between the positive electrode and the negative electrode; a stopper disposed at an outer periphery of the negative electrode; a battery case accommodating an electrode assembly comprising the positive electrode, the negative electrode, and the solid electrolyte layer, and the stopper; and a pressing member disposed at each of opposite outer surfaces of the battery case which are parallel to planes of the positive electrode and the negative electrode respectively, the pressing member pressing in a direction toward the planes of the positive electrode and the negative electrode respectively, wherein a height of the stopper is equal to or less than a thickness of the negative electrode before pressing, wherein, an end of the stopper in a height direction is adjacent to and faces the solid electrolyte layer such that a distance corresponding to the height of the stopper is not larger than the thickness of the negative electrode when pressed by the pressing member, and wherein an area of the positive electrode parallel to a pressing surface of the pressing member is configured to correspond to an area of an outer surface of the negative electrode and an outer surface of the stopper parallel to the pressing surface of the pressing member. ### Claim 2 (depends on 1) A battery module comprising the all-solid-state battery according to claim 1 as a unit cell. ### Claim 3 (depends on 1) The all-solid-state battery according to claim 1, wherein the negative electrode current collector is formed of a metal. ### Claim 4 (depends on 3) A battery module comprising the all-solid-state battery according to claim 3 as a unit cell. ### Claim 5 (depends on 1) The all-solid-state battery according to claim 1, further comprising a stopper disposed at an outer periphery of the positive electrode. ### Claim 6 (depends on 5) A battery module comprising the all-solid-state battery according to claim 5 as a unit cell. ### Claim 7 (depends on 1) The all-solid-state battery according to claim 1, wherein the stopper is disposed perpendicular to a pressing surface of the pressing member. ### Claim 8 (depends on 7) A battery module comprising the all-solid-state battery according to claim 7 as a unit cell. ### Claim 9 (depends on 1) The all-solid-state battery according to claim 1, wherein the height of the stopper is less than the thickness of the negative electrode before pressing. ### Claim 10 (depends on 9) A battery module comprising the all-solid-state battery according to claim 9 as a unit cell. ### Claim 11 (depends on 1) The all-solid-state battery according to claim 1, wherein the height of the stopper corresponds to a length of the outer periphery of the negative electrode at which the stopper is disposed. ### Claim 12 (depends on 11) A battery module comprising the all-solid-state battery according to claim 11 as a unit cell. ### Claim 13 (depends on 1) The all-solid-state battery according to claim 1, wherein an original form of the stopper is maintained when the battery case is pressed by the pressing member. ### Claim 14 (depends on 13) A battery module comprising the all-solid-state battery according to claim 13 as a unit cell. ### Claim 15 (depends on 1) The all-solid-state battery according to claim 1, wherein the all-solid-state battery has no volumetric change due to charging and discharging. ### Claim 16 (depends on 15) A battery module comprising the all-solid-state battery according to claim 15 as a unit cell. ### Claim 17 (depends on 1) The all-solid-state battery according to claim 1, wherein lithium plating and stripping occur in pores in the negative electrode current collector. ### Claim 18 (depends on 17) A battery module comprising the all-solid-state battery according to claim 17 as a unit cell. ### Claim 19 (depends on 1) The all-solid-state battery according to claim 1, wherein the negative electrode is constituted by the negative electrode current collector having the porous structure. ### Claim 20 (depends on 19) A battery module comprising the all-solid-state battery according to claim 19 as a unit cell.