# US 12,763,353 B2 · Manufacturing device and manufacturing method for electrode assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,763,353 B2 - Document ID: US12763353B2 - Status: Granted - Kind: B2 - Application number: 18/618,881 - Filed: 2024-03-27 - Published: 2024-08-08 - Granted: 2026-10-13 - Earliest claimed: 2021-12-21 - Assignees: Contemporary Amperex Technology (Hong Kong) Limited - Applicants: Contemporary Amperex Technology (Hong Kong) Limited - Inventors: Zhiyang Wu; Chao Xie; Yiruo Wang; Gang Lin - Web page: https://patentgrep.com/patent/US12763353B2 ## CPC - H01M 10/0404: {Machines for assembling batteries} - B32B 37/20: involving the assembly of continuous webs only - B32B 38/0004: {Cutting, tearing or severing, e.g. bursting; Cutter details (cutting in general B26D; laminating combined with punching or perforating B32B38/04; removing all or part of the layers B32B38/10; cutting in combination with laying up and registration B32B38/185 takes precedence)} - B32B 38/1833: {Positioning, e.g. registration or centering} - B32B 38/1875: {Tensioning} - H01M 10/0587: of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators - H01M 50/46: Separators, membranes or diaphragms characterised by their combination with electrodes - B32B 2309/72: For measuring or regulating, e.g. systems with feedback loops - B32B 2457/10: Batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ## Abstract A manufacturing device for an electrode assembly comprises a first electrode plate feeding mechanism for conveying a first electrode plate, a first separator feeding mechanism for conveying a first separator, a second separator feeding mechanism for conveying a second separator, and a compounding mechanism provided downstream the first electrode plate feeding mechanism, the first separator feeding mechanism, and the second separator feeding mechanism. The compounding mechanism is used for sequentially laminating and compounding the first separator, the first electrode plate, and the second separator into a first electrode plate complex. The manufacturing device further comprises a second electrode plate feeding mechanism for conveying a second electrode plate having opposite polarity than the first electrode plate, and a winding mechanism provided downstream the compounding mechanism and the second electrode plate feeding mechanism and used for winding the first electrode plate complex and the second electrode plate to form an electrode assembly. ## Claims ### Claim 1 A manufacturing device for an electrode assembly, comprising: a first electrode plate feeding mechanism configured to convey a first electrode plate; a first separator feeding mechanism configured to convey a first separator; a second separator feeding mechanism configured to convey a second separator; a compounding mechanism provided downstream of the first electrode plate feeding mechanism, the first separator feeding mechanism, and the second separator feeding mechanism, the compounding mechanism being configured to sequentially laminate and compound the first separator, the first electrode plate, and the second separator into a first electrode plate complex, the sequentially laminating and compounding comprising compounding and connecting the first separator to a first side of the first electrode plate and the second separator to a second side of the first electrode plate to form, in advance of winding, the first electrode plate complex, the first electrode plate complex comprising an integral structure in which the first electrode plate is covered on the first side by the first separator and on the second side by the second separator, the compounding mechanism comprising at least one of a hot pressing device, an electrostatic generator, a gluing device, or a plasma adsorption device; a second electrode plate feeding mechanism configured to convey a second electrode plate, the second electrode plate and the first electrode plate having opposite polarities; and a winding mechanism provided downstream of the compounding mechanism and the second electrode plate feeding mechanism and configured to wind the first electrode plate complex and the second electrode plate to form an electrode assembly, the winding mechanism comprising a winding mandrel configured to clamp a start end of the first electrode plate complex, the winding mechanism being configured to wind the first electrode plate complex on the winding mandrel for a predetermined number of turns and to thereafter receive the second electrode plate conveyed to the winding mandrel to be wound under a driving of the first electrode plate complex. ### Claim 2 (depends on 1) The manufacturing device according to claim 1, wherein: the winding mechanism further comprises a first electrode plate winding entering roller set, the first electrode plate winding entering roller set being provided upstream of the winding mandrel, and the first electrode plate winding entering roller set being configured to convey the first electrode plate complex to the winding mandrel. ### Claim 3 (depends on 2) The manufacturing device according to claim 2, further comprising: a feeding guide mechanism, the feeding guide mechanism being provided between the second electrode plate feeding mechanism and the winding mechanism, and the feeding guide mechanism being configured to convey the second electrode plate to the winding mandrel so that the first electrode plate complex is coated outside the second electrode plate. ### Claim 4 (depends on 2) The manufacturing device according to claim 2, wherein: the winding mechanism further comprises a rotating base and at least two winding mandrels, the at least two winding mandrels being provided around an axis of rotation of the rotating base and provided at intervals on the rotating base. ### Claim 5 (depends on 4) The manufacturing device according to claim 4, further comprising: a first cut-off mechanism, the first cut-off mechanism being disposed between the at least two winding mandrels and configured to cut off the first electrode plate complex; and/or a second cut-off mechanism, the second cut-off mechanism being disposed between the second electrode plate feeding mechanism and the winding mechanism and configured to cut off the second electrode plate. ### Claim 6 (depends on 1) The manufacturing device according to claim 1, further comprising: a first detection mechanism, the first detection mechanism being disposed between the compounding mechanism and the winding mechanism, and the first detection mechanism being configured to detect a degree of alignment for compounding of the first electrode plate, the first separator and the second separator. ### Claim 7 (depends on 1) The manufacturing device according to claim 1, further comprising: a first deviation rectification roller set and a second deviation rectification roller set; wherein: the first deviation rectification roller set is disposed between the compounding mechanism and the winding mechanism, and the first deviation rectification roller set is configured to adjust relative positions of the first electrode plate complex and the second electrode plate; and the second deviation rectification roller set is disposed between the second electrode plate feeding mechanism and the winding mechanism, and the second deviation rectification roller set is configured to adjust relative positions of the first electrode plate complex and the second electrode plate. ### Claim 8 (depends on 1) The manufacturing device according to claim 1, further comprising: a third deviation rectification roller set, a fourth deviation rectification roller set and a fifth deviation rectification roller set; wherein: the third deviation rectification roller set is disposed between the first electrode plate feeding mechanism and the compounding mechanism, and the third deviation rectification roller set is configured to adjust relative positions between the first electrode plate, the first separator, and the second separator; the fourth deviation rectification roller set is disposed between the first separator feeding mechanism and the compounding mechanism, and the fourth deviation rectification roller set is configured to adjust relative positions between the first electrode plate, the first separator, and the second separator; and the fifth deviation rectification roller set is disposed between the second separator feeding mechanism and the compounding mechanism, and the fifth deviation rectification roller set is configured to adjust relative positions between the first electrode plate and the first separator and the second separator. ### Claim 9 (depends on 1) The manufacturing device according to claim 1, further comprising: a first tensioning mechanism, a second tensioning mechanism and a third tensioning mechanism; wherein: the first tensioning mechanism is provided between the compounding mechanism and the winding mechanism, and the first tensioning mechanism is configured to adjust a degree of tensioning of the first electrode plate complex; the second tensioning mechanism is provided between the second electrode plate feeding mechanism and the winding mechanism, and the second tensioning mechanism is configured to adjust a degree of tensioning of the second electrode plate; and the third tensioning mechanism is provided between the first electrode plate feeding mechanism and the compounding mechanism, and the third tensioning mechanism is configured to adjust a degree of tensioning of the first electrode plate. ### Claim 10 A manufacturing method for an electrode assembly, comprising: providing a first separator, a first electrode plate and a second separator; sequentially laminating and compounding the first separator, the first electrode plate and the second separator into a first electrode plate complex, the sequentially laminating and compounding comprising compounding and connecting the first separator to a first side of the first electrode plate and the second separator to a second side of the first electrode plate to form, in advance of winding, the first electrode plate complex, the first electrode plate complex comprising an integral structure in which the first electrode plate is covered on the first side by the first separator and on the second side by the second separator; providing a second electrode plate; and winding the first electrode plate complex and the second electrode plate together to form an electrode assembly, wherein the first electrode plate and the second electrode plate are separated by the first separator and the second separator, the winding the first electrode plate complex and the second electrode plate together comprising winding the first electrode plate complex on a winding mandrel for a predetermined number of turns and thereafter receiving the second electrode plate conveyed to the winding mandrel to be wound under a driving of the first electrode plate complex. ### Claim 11 (depends on 10) The manufacturing method according to claim 10, further comprising: cutting off the second electrode plate and cutting off the first electrode plate complex after conveying the second electrode plate and the first electrode plate complex to a winding station and winding the second electrode plate and the first electrode plate complex.