# US 2026/0066472 A1 · Battery case and secondary battery including same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0066472 A1 - Document ID: US20260066472A1 - Status: Published application - Kind: A1 - Application number: 19/229,983 - Filed: 2025-06-05 - Published: 2026-03-05 - Earliest claimed: 2024-09-05 - Assignees: Samsung SDI Co., Ltd. - Applicants: Samsung SDI Co., Ltd. - Inventors: Soo-Mi EO; Jeawoan LEE - Web page: https://patentgrep.com/patent/US20260066472A1 ## CPC - H01M 50/474: characterised by their position inside the cells - H01M 50/103: prismatic or rectangular (H01M50/109, H01M50/11 take precedence) - H01M 50/105: Pouches or flexible bags - H01M 50/119: Metals - H01M 50/186: characterised by the disposition of the sealing members - H01M 50/477: characterised by their shape - H01M 50/55: on the same side of the cell - H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells - H01M 50/557: Plate-shaped terminals - H01M 50/566: by welding, soldering or brazing - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A case may include a case body having an accommodation space and a first through-hole in a first wall of the case body, a first insulating member on an inner surface of the first wall, a terminal plate on the first insulating member, a rivet terminal penetrating the first through-hole of the case body, the first insulating member, and the terminal plate, and an electrode terminal connected to the rivet terminal on an outer surface of the first wall. The first insulating member may include a horizontal portion on the inner surface of the first wall, and a first extension portion extending from one side of the horizontal portion. 4904-4113-1563, v. 3 ## Claims ### Claim 1 A case comprising: a case body comprising an accommodation space and a first through-hole in a first wall of the case body; a first insulating member on an inner surface of the first wall; a terminal plate on the first insulating member; a rivet terminal penetrating the first through-hole of the case body, the first insulating member, and the terminal plate; and an electrode terminal coupled to the rivet terminal on an outer surface of the first wall, wherein the first insulating member comprises: a horizontal portion on the inner surface of the first wall; and a first extension portion extending from one side of the horizontal portion. ### Claim 2 (depends on 1) The case as claimed in claim 1, wherein the first extension portion extends in a direction substantially parallel to a second wall substantially perpendicular to the first wall. ### Claim 3 (depends on 1) The case as claimed in claim 1, wherein the first extension portion extends higher than a height at which the terminal plate is on the horizontal portion. ### Claim 4 (depends on 3) The case as claimed in claim 3, wherein the first extension portion extends higher than a height of an electrode tab connected to the terminal plate. ### Claim 5 (depends on 1) The case as claimed in claim 1, wherein the first insulating member further comprises a second extension portion that extends from one side of the first extension portion in a direction intersecting a direction in which the first extension portion extends. ### Claim 6 (depends on 1) The case as claimed in claim 1, wherein a width of the first insulating member is longer than a width of the terminal plate in a direction corresponding to a long side of the first wall. ### Claim 7 (depends on 1) The case as claimed in claim 1, further comprising: a second insulating member between the first insulating member and a second wall of the case body, the second wall being substantially perpendicular to the first wall. ### Claim 8 (depends on 7) The case as claimed in claim 7, wherein the second insulating member is in one region of the second wall. ### Claim 9 (depends on 7) The case as claimed in claim 7, wherein the second insulating member is in substantially an entire region of the second wall. ### Claim 10 (depends on 1) The case as claimed in claim 1, wherein the rivet terminal comprises: a rivet head portion on the terminal plate; and a rivet body portion penetrating the first through-hole of the case body, the first insulating member, and the terminal plate and protruding toward an outer surface of the first wall. ### Claim 11 (depends on 10) The case as claimed in claim 10, wherein a thickness of one region of the terminal plate where the rivet head portion is located is thicker than a thickness of another region of the terminal plate. ### Claim 12 (depends on 1) The case as claimed in claim 1, further comprising: a gasket between a side wall of the first through-hole in the case body and the electrode terminal, the rivet terminal extending into the gasket to insulate the case body from the electrode terminal and to insulate the rivet terminal from the case body. ### Claim 13 (depends on 12) The case as claimed in claim 12, wherein the first insulating member comprises a second through-hole corresponding to the first through-hole, and wherein the gasket is between side walls of the first through-hole and the second through-hole, and between the outer surface of the first wall of the case body and the electrode terminal in an axial direction of the first through-hole. ### Claim 14 (depends on 1) The case as claimed in claim 1, wherein the case body is made of a metal comprising stainless steel (SUS). ### Claim 15 A secondary battery comprising: an electrode assembly comprising a first electrode comprising a first electrode tab, a second electrode comprising a second electrode tab, and a separator; a case comprising one opened surface configured to accommodate the electrode assembly; and a cover covering the one opened surface of the case and sealing the electrode assembly in the case, wherein the case comprises: a case body comprising a through-hole in a first wall; a first insulating member on an inner surface of the first wall; a terminal plate on the first insulating member and connected to the first electrode tab; a rivet terminal penetrating the through-hole of the case body, the first insulating member, and the terminal plate; and an electrode terminal connected to the rivet terminal on an outer surface of the first wall, and wherein the first insulating member comprises: a horizontal portion on the inner surface of the first wall; and a first extension portion extending from one side of the horizontal portion. ### Claim 16 (depends on 15) The secondary battery as claimed in claim 15, wherein the first extension portion extends in a direction substantially parallel to a second wall substantially perpendicular to the first wall. ### Claim 17 (depends on 15) The secondary battery as claimed in claim 15, wherein the first extension portion extends to be higher than a height of the first electrode tab connected to the terminal plate. ### Claim 18 (depends on 15) The secondary battery as claimed in claim 15, wherein the first insulating member further comprises a second extension portion extending toward the cover from one side of the first extension portion. ### Claim 19 (depends on 18) The secondary battery as claimed in claim 18, wherein the second extension portion is on the first electrode tab. ### Claim 20 (depends on 15) The secondary battery as claimed in claim 15, further comprising: a second insulating member between the first insulating member and a second wall of the case body facing the cover.