リチウムイオン電池とは?

  • 1 リチウムイオン二次電池のメカニズム
  • 2 リチウムイオン二次電池ができるまで
これからのスタンダード リチウムイオン電池

AECSのリチウムイオン二次電池ができるまで

  • Phase1 : 電極ができるまで
  • Phase2 : セルとモジュールの組み立て
  • Phase3 : パックの構築

Phase1電極が納品される

  • [1: Electrode]
    The electrode material is delivered in a roll form from NEC Energy Devices.
  • [2: Slitting]
    Electrode Slitting
    The electrode roll is slit to the width of the cell.

Phase2セルとモジュールの組み立て

  • [1: Stacking]
    The anodes, cathodes, and separators are cut to a prescribed length, and then the components are alternately stacked in the order of anode, separator, cathode, separator, anode, etc. at a high speed using fully automated equipment.
    Tabs that function as the exits and entrances for electricity are also connected to each of the cathodes and anodes.
  • [2: Electrolyte Injection]
    Electrolyte Injection and Sealing Process
    Next, the electrolytic solution is poured into the cell, which has been sealed with an aluminum laminate.
  • [3: Aging]
    Module Assembly Process
    Inserted in an aluminum exterior package.
  • [4: Capacity Measurement]
    The battery capacity, voltage, discharge characteristics, and other properties are measured.
  • [5: Inspection]
    An inspection of necessary items for various points is automatically conducted on every cell, and the external appearance is visually inspected. The inspection data is linked to the ID attached to every cell (the photo shows a bar code with an ID recorded) and recorded.
  • [6: Module Assembly]
    Cells that pass the final inspection are layered in stacks of 4 for EV use and in stacks of 8 for HEV use, connected to external terminals, and then enclosed in a metal case. Following an inspection, the module is completed.

Phase3パックの構築

  • [Pack Assembly]
    The batteries are loaded as a "pack" in EV and HEV vehicles. A pack is formed by connecting multiple modules, controllers, and other components, and then inserting the unit into a case designed specifically for each vehicle model. The packs for the Nissan Leaf, Renault Kangoo, and other electric vehicles contain 48 modules connected in a series, while the packs for the Nissan Fuga Hybrid and other hybrid electric vehicles contain 12 modules connected in a series.

1 リチウムイオンのメカニズム