• 专利标题:   Method for preparing tabless energy storage device, involves winding flagged electrode to form electrode roll comprising series of rolled flags, and electrically connecting rolled flags to current collector to form storage device.
  • 专利号:   WO2022061187-A1, CA3191830-A1, KR2023074168-A, CN116195110-A
  • 发明人:   EGGLESTON B, MOORS M, KALT A, GROSSMAN M, MACNAUGHTON D, SCHAFER D, MOORES M, CARLT A, MCNAUGHTON D, SHAFFER D, SCHAEFER D
  • 专利权人:   TESLA INC
  • 国际专利分类:   H01M010/04, H01M010/052, H01M010/0587, H01M004/04, H01M004/38, H01M004/48, H01M004/58, H01M004/70, H01M050/533, H01M050/536, H01M050/538
  • 专利详细信息:   WO2022061187-A1 24 Mar 2022 202227 Pages: 35 English
  • 申请详细信息:   WO2022061187-A1 WOUS050992 17 Sep 2021
  • 优先权号:   US081244P, US167565P, CA3191830, CN80064172, KR712010

▎ 摘  要

NOVELTY - The method involves providing an electrode layer which is provided with an active material mounted over a foil. A series of flags are formed in the foil to form a flagged electrode. The flagged electrode is winded to form an electrode roll comprises a series of rolled flags. The rolled flags are electrically connected to a current collector to form an energy storage device. The folding is performed by a deflector, roller, scoring spool, or combination of main portion. The folded flags are wound a flag management device moves the folded flags into a substantially interleaved configuration. The flag management device comprises a diverter, wheel, or air nozzle. The electrode layer comprises a first section used to form the electrode roll and a second section. The main portion comprises cutting the first and second sections apart. The rolled flags of the electrode roll is inspected. USE - Method for preparing tables energy storage device. ADVANTAGE - The method enables reducing ohmic resistance with distance when current travels all the way along the cathode or anode to the tab and out of the cell. The method ensures that the tabs are additional components, add additional thickness to the device and must be rolled into the jelly roll, thus reducing costs and present manufacturing challenges. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for preparing rolled electrode; and (2) an interleaved flagged electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a top view of a image of battery electrodes with folded and interleaved flag features.