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  • 专利标题:   Manufacture of positive electrode plate used for manufacturing battery, involves forming first layer and second layer on surface of metal foil to form positive electrode fabric, cutting positive electrode, and irradiating second layer with laser.
  • 专利号:   JP2022093839-A, JP7262436-B2
  • 发明人:   MAEDA K, KATAYAMA K, SHIOZAKI K, NAKAI H
  • 专利权人:   PRIME PLANET ENERGY SOLUTIONS INC
  • 国际专利分类:   H01M004/04, H01M004/139
  • 专利详细信息:   JP2022093839-A 24 Jun 2022 H01M-004/04 202256 Pages: 19 Japanese
  • 申请详细信息:   JP2022093839-A JP206545 14 Dec 2020
  • 优先权号:   JP206545

▎ 摘　　要

NOVELTY - The method involves forming (a1) a first layer and a second layer on the surface of a metal foil to form a positive electrode and cutting (a2) the positive electrode to manufacture a positive electrode plate. The second layer adjacent as the first layer as described in the first layer in a plan view. The second layer is irradiated with a laser. A portion of the positive electrode is cut. The first layer includes a positive electrode active material. The second layer contains an inorganic insulating material and a conductive carbon material. The mass ratio of the inorganic insulating material to the conductive carbon material is 3.7 to 560 in the second layer. The inorganic insulating material has one selected from the group consisting of alumina, boehmite, titania, magnesia and silica. The conductive carbon material has one selected from the group consisting of carbon black, graphite, carbon nanotubes, carbon nanohorns, graphene and fullerenes. USE - Manufacturing method of positive electrode plate used for manufacturing battery used as main power source or power source for power assist in electric vehicle. ADVANTAGE - The method enables manufacture of cathode plate having favorable electrical resistance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a manufacturing method of the battery; and (2) a positive electrode raw material for laser cutting. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic flowchart illustrating a manufacturing method of battery. (Drawing includes non-English language text) Step for manufacturing the positive electrode plate by the method for manufacturing a positive electrode plate (A) Step for forming a first layer and a second layer on the surface of a metal foil to form a positive electrode (a1) Step for cutting the positive electrode to manufacture a positive electrode plate (a2) Step for forming an electrode housing including a positive electrode plate and a negative electrode plate (B) Step for manufacturing a battery including an electrode housing (C)