# US 2025/0096376 A1 · Secondary battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0096376 A1 - Document ID: US20250096376A1 - Status: Published application - Kind: A1 - Application number: 18/626,138 - Filed: 2024-04-03 - Published: 2025-03-20 - Earliest claimed: 2023-09-14 - Assignees: Samsung SDI Co., Ltd. - Applicants: Samsung SDI Co., Ltd. - Inventors: Yu Sik HWANG - Web page: https://patentgrep.com/patent/US20250096376A1 ## CPC - H01M 50/14: for protecting against damage caused by external factors - H01M 50/474: characterised by their position inside the cells - H01M 50/103: prismatic or rectangular (H01M50/109, H01M50/11 take precedence) - H01M 50/15: for prismatic or rectangular cells (H01M50/153 takes precedence) - H01M 50/477: characterised by their shape - H01M 50/528: Fixed electrical connections, i.e. not intended for disconnection - H01M 50/548: on opposite sides of the cell - H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - 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 - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A secondary battery includes a case, an electrode assembly in the case, and having a first electrode base material tab a second electrode base material tab on respective ends thereof in a longitudinal direction, a first cap assembly provided with a first electrode terminal coupled to one end of the case, and electrically connected to the first electrode base material tab, a second cap assembly provided with a second electrode terminal coupled to another end of the case, and electrically connected to the second electrode base material tab, and a movement reduction member coupled to an interior of the case and insulated from the electrode assembly. ## Claims ### Claim 1 A secondary battery comprising: a case; an electrode assembly in the case, and having a first electrode base material tab a second electrode base material tab on respective ends thereof in a longitudinal direction; a first cap assembly provided with a first electrode terminal coupled to one end of the case, and electrically connected to the first electrode base material tab; a second cap assembly provided with a second electrode terminal coupled to another end of the case, and electrically connected to the second electrode base material tab; and a movement reduction member coupled to an interior of the case and insulated from the electrode assembly. ### Claim 2 (depends on 1) The secondary battery as claimed in claim 1, wherein the movement reduction member has a plate shape, and comprises a coupling part coupled to the case, and a contact part configured to support the electrode assembly. ### Claim 3 (depends on 2) The secondary battery as claimed in claim 2, wherein the coupling part is bent from one end of the contact part. ### Claim 4 (depends on 3) The secondary battery as claimed in claim 3, wherein the coupling part is bent at a right angle from the contact part. ### Claim 5 (depends on 4) The secondary battery as claimed in claim 4, wherein the contact part is coated with an insulating material, or contacts the insulating material by insert-injecting. ### Claim 6 (depends on 5) The secondary battery as claimed in claim 5, wherein the case comprises long side portions having opened ends, and short side portions having a length that is less than a length of the long side portions, and wherein the movement reduction member is at a center of the long side portions in the longitudinal direction. ### Claim 7 (depends on 5) The secondary battery as claimed in claim 5, wherein the case comprises long side portions having opened ends, and short side portions having a length that is less than a length of the long side portions, and wherein the movement reduction member is provided as a plurality of movement reduction members along the longitudinal direction of the long side portions. ### Claim 8 (depends on 7) The secondary battery as claimed in claim 7, wherein the movement reduction members have a same length. ### Claim 9 (depends on 8) The secondary battery as claimed in claim 8, wherein the movement reduction members have different respective lengths. ### Claim 10 (depends on 9) The secondary battery as claimed in claim 9, wherein one of the movement reduction members having a relatively long length is at a center of the long side portions in the longitudinal direction, and wherein another one of the movement reduction member having a relatively short length is outside the movement reduction member having the relatively long length. ### Claim 11 (depends on 10) The secondary battery as claimed in claim 10, wherein the movement reduction member having the relatively long length and the movement reduction member having the relatively short length are alternately located. ### Claim 12 (depends on 7) The secondary battery as claimed in claim 7, wherein the movement reduction member is about 15% to about 25% of the length of the long side portions in a left and right direction based on a center of the long side portions in the longitudinal direction. ### Claim 13 (depends on 6) The secondary battery as claimed in claim 6, wherein a pair of the movement reduction members are respectively above and below the long side portions. ### Claim 14 (depends on 13) The secondary battery as claimed in claim 13, wherein the contact parts of the movement reduction members are parallel to the short side portions. ### Claim 15 (depends on 14) The secondary battery as claimed in claim 14, wherein the contact parts of the movement reduction members do not contact each other. ### Claim 16 A secondary battery comprising: a case having a hexahedral shape having opened ends in a longitudinal direction, and having first and second surfaces as long side portions, and third and fourth surfaces connecting the first surface to the second surface; an electrode assembly in the case and having a first electrode base material tab and a second electrode base material tab on respective ends in the longitudinal direction; a first cap assembly comprising a first electrode terminal coupled to one end of the case, and electrically connected to the first electrode base material tab; a second cap assembly provided with a second electrode terminal coupled to another end of the case, and electrically connected to the second electrode base material tab; and a movement reduction member coupled to an interior of the first surface or the second surface, and insulated from the electrode assembly. ### Claim 17 (depends on 16) The secondary battery as claimed in claim 16, wherein the movement reduction member has a plate shape, and comprises a coupling part welded to the case, and a contact part configured to support the electrode assembly. ### Claim 18 (depends on 17) The secondary battery as claimed in claim 17, wherein the coupling part is bent from one end of the contact part. ### Claim 19 (depends on 18) The secondary battery as claimed in claim 18, wherein the coupling part is bent at a right angle from the contact part. ### Claim 20 (depends on 19) The secondary battery as claimed in claim 19, wherein the contact part is coated with an insulating material, or contacts the insulating material by insert-injecting. ### Claim 21 (depends on 20) The secondary battery as claimed in claim 20, wherein the movement reduction members is at a longitudinal center of the first surface or the second surface. ### Claim 22 (depends on 21) The secondary battery as claimed in claim 21, wherein the movement reduction member is provided as a pair of movement reduction members respectively above and below the first surface and the second surface. ### Claim 23 (depends on 22) The secondary battery as claimed in claim 22, wherein the contact part of one of the pair of the movement reduction members above the first surface and the second surface is parallel to the third surface, and wherein the contact part of the other of the pair of the movement reduction members below the first surface and the second surface is parallel to the fourth surface. ### Claim 24 (depends on 22) The secondary battery as claimed in claim 22, wherein the movement reduction member is about 15% to about 25% of a length of the long side portions in a left and right direction based on the longitudinal center.