# US 7,745,046 B2 · Secondary battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,745,046 B2 - Document ID: US7745046B2 - Status: Granted - Kind: B2 - Application number: 11/156,609 - Filed: 2005-06-21 - Published: 2005-12-29 - Granted: 2010-06-29 - Earliest claimed: 2004-06-29 - Assignees: Samsung SDI Co., Ltd. - Inventors: Yong-Sam Kim; Hyon-Sok Kim - Web page: https://patentgrep.com/patent/US7745046B2 ## CPC - H01M 50/528: Fixed electrical connections, i.e. not intended for disconnection - H01M 10/0431: {Cells with wound or folded electrodes (H01M10/045 takes precedence)} - H01M 50/176: for prismatic or rectangular cells (H01M50/181 takes precedence) - H01M 50/536: characterised by the method of fixing the leads to the electrodes, e.g. by welding - H01M 50/55: on the same side of the cell - H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells - H01M 50/567: by fixing means, e.g. screws, rivets or bolts - H01M 4/70: characterised by shape or form - 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: an electrode assembly including positive and negative electrodes; a container adapted to receive the electrode assembly; a cap assembly having at least two terminals exposed outside the container, the cap assembly being adapted to be fixed to the container to seal the container; and lead elements adapted to electrically connect the terminals and the electrode assembly. A center of the terminals are aligned with a center of the electrode assembly, and the lead elements are spaced apart from the center of their respective terminals and adapted to be connected to their respective terminals and the electrode assembly. ## Claims ### Claim 1 A secondary battery, comprising: an electrode assembly including positive and negative elements wound together with a separator therebetween and respectively including positive and negative electrodes; a container having one open end and adapted to receive the electrode assembly; a cap assembly having a base plate and at least two terminals passing through the base plate and exposed outside of the container, the cap assembly being adapted to be fixed to the one open end of the container to seal the container; and lead elements adapted to electrically connect the at least two terminals to the electrode assembly; wherein a center of each of the at least two terminals is aligned with a center of the electrode assembly, and wherein the lead elements are spaced apart from the center of their respective terminals and are adapted to be connected between their respective terminals and the electrode assembly; wherein the positive and negative electrodes have respective separate positive and negative uncoated regions lacking active material, the positive and negative uncoated regions being arranged on respective opposite ends of the positive and negative electrodes, respectively, and compressed together; and wherein the at least two terminals and the lead elements are respectively connected to the compressed positive and negative uncoated regions. ### Claim 2 (depends on 1) The secondary battery of claim 1, wherein the positive uncoated region and the negative uncoated region are adapted to be arranged opposite to each other, and wherein the lead elements are adapted to respectively attach to an outermost portion of the positive uncoated region and an outermost portion of the negative uncoated region. ### Claim 3 (depends on 1) The secondary battery of claim 1, wherein each lead element is adapted to contact and attach to its respective uncoated region along the length direction of the uncoated region. ### Claim 4 (depends on 2) The secondary battery of claim 2, wherein the outermost portions of the positive uncoated region and the negative uncoated region are adapted to be opposite to each other, and wherein the positive lead element and the negative lead element are adapted to contact and attach to at least one of the outermost portions. ### Claim 5 (depends on 1) The secondary battery of claim 1, wherein each of the at least two terminals is adapted to be inserted into a respective hole on the base plate of the cap assembly, and wherein a stop protrusion is arranged between each terminal and its respective lead element to connect the terminal to the lead element and to stop the terminal at the base plate. ### Claim 6 (depends on 5) The secondary battery of claim 5, wherein a gasket is arranged between each of the at least two terminals and the base plate and is adapted to respectively insulate each terminal from the base plate. ### Claim 7 (depends on 5) The secondary battery of claim 5, wherein a screw thread is adapted to mate with a nut arranged on an outer circumference surface of each of the at least two terminals to fix each terminal to the base plate. ### Claim 8 (depends on 1) The secondary battery of claim 1, wherein the secondary battery has a rectangular shape. ### Claim 9 A secondary battery, comprising: an electrode assembly including positive and negative elements wound together with a separator therebetween and respectively including positive and negative electrodes; a container having one open end and adapted to receive the electrode assembly; a cap assembly having a base plate and at least two terminals passing through the base plate and exposed outside of the container, the cap assembly being adapted to be fixed to the one open end of the container to seal the container; and lead elements adapted to electrically connect the at least two terminals to the electrode assembly; wherein a center of each of the at least two terminals is aligned with a center of the electrode assembly, and wherein the lead elements are spaced apart from the center of their respective terminals and are adapted to be connected between their respective terminals and the electrode assembly; wherein the positive and negative electrodes have respective separate positive and negative uncoated regions lacking active material, and wherein the positive uncoated region and the negative uncoated region are adapted to be arranged opposite to each other, and wherein the lead elements are adapted to respectively attach to an outermost portion of the positive uncoated region and an outermost portion of the negative uncoated region. ### Claim 10 (depends on 9) The secondary battery of claim 9, wherein the outermost portions of the positive uncoated region and the negative uncoated region are adapted to be opposite to each other, and wherein the positive lead element and the negative lead element are adapted to contact and attach to at least one of the outermost portions. ### Claim 11 (depends on 9) The secondary battery of claim 9, wherein each of the at least two terminals is adapted to be inserted into a respective hole on the base plate of the cap assembly, and wherein a stop protrusion is arranged between each terminal and its respective lead element to connect the terminal to the lead element and to stop the terminal at the base plate. ### Claim 12 (depends on 11) The secondary battery of claim 11, wherein a gasket is arranged between each of the at least two terminals and the base plate and is adapted to respectively insulate each terminal from the base plate. ### Claim 13 (depends on 11) The secondary battery of claim 11, wherein a screw thread is adapted to mate with a nut arranged on an outer circumference surface of each of the at least two terminals to fix each terminal to the base plate. ### Claim 14 A secondary battery, comprising: an electrode assembly including positive and negative elements wound together with a separator therebetween and respectively including positive and negative electrodes; a container having one open end and adapted to receive the electrode assembly; a cap assembly having a base plate and at least two terminals passing through the base plate and exposed outside of the container, the cap assembly being adapted to be fixed to the one open end of the container to seal the container; and lead elements adapted to electrically connect the at least two terminals to the electrode assembly; wherein a center of each of the at least two terminals is aligned with a center of the electrode assembly, and wherein the lead elements are spaced apart from the center of their respective terminals and are adapted to be connected between their respective terminals and the electrode assembly; wherein the positive and negative electrodes have respective separate positive and negative uncoated regions lacking active material, and wherein each lead element is adapted to contact and attach to its respective uncoated region along the length direction of the uncoated region. ### Claim 15 (depends on 14) The secondary battery of claim 14, wherein the outermost portions of the positive uncoated region and the negative uncoated region are adapted to be opposite to each other, and wherein the positive lead element and the negative lead element are adapted to contact and attach to at least one of the outermost portions. ### Claim 16 (depends on 14) The secondary battery of claim 14, wherein each of the at least two terminals is adapted to be inserted into a respective hole on the base plate of the cap assembly, and wherein a stop protrusion is arranged between each terminal and its respective lead element to connect the terminal to the lead element and to stop the terminal at the base plate. ### Claim 17 (depends on 16) The secondary battery of claim 16, wherein a gasket is arranged between each of the at least two terminals and the base plate and is adapted to respectively insulate each terminal from the base plate. ### Claim 18 (depends on 16) The secondary battery of claim 16, wherein a screw thread is adapted to mate with a nut arranged on an outer circumference surface of each of the at least two terminals to fix each terminal to the base plate.