Scope of Business
Lead Tab
Lid Assembly
Cap Assembly
Carbon paper
GDL
GF Electrode
NMP Recycle
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Lid Assembly
Lead Tab Lid Assembly Carbon Paper GDL GF Electrode NMP Recycle
① Lid Assembly
  • Prismatic type LIB component
  • Prismatic type LIB Sealing component
  • Role of current collecting and wire
  • Function as insulation and safety device (Vent)
② Lid Assembly Composition
③ Description and image by part
Part name Cap plate Vent Membrane Terminal plate Top plate CP Insert Connection plate
Function
  • Can and Sealing
  • Vent welding
  • Membrane welding
  • Maintain internal pressure
  • Internal gas release
  • Reversal of internal pressure rise
  • Connect with busbar
  • bipolar electrification
  • hort-circuit current reduction
  • Insulation between Cap Plate and connection plate
  • OSD* moisture penetration prevention
  • Membrane connection during OSD operation
Standard AL 3003-H14 AL 1050-O AL 1050-O AL 3003-H14 STS
304+Teflon		 **PC-***GF20%+****PTFE AL 3003-H14
Image
  • *OSD: Overcharge Safety Device
  • **PC: Polycarbonate
  • ***GF20%: Glass fiber 20%
  • ****PTFE: Polytetrafluoroethylene
Part name OSD cover Bottom
insulator		 Seal gasket Seal gasket insulator Rivet terminal Positive Rivet terminal Negative CC insert
Function
  • OSD moisture penetration prevention
  • OSD airexhaust
  • Short circuit protection during OSD, NSD*
  • positive and negative terminal Sealing
  • Short circuit protection during OSD, NSD
  • positive and negative terminal Sealing
  • Connection with Terminalplate
  • Connection with Current collector
  • Consists of upper side with Al and bottom side with Cu
  • Connection with Terminal plate
  • Connection with Current collector
  • Minimize Arc during fuse melting
Standard **PPS-GF40% ***PP ****PFA PFA AL 3003-H14 C1100 CGF20%+PTFE
Image
  • *NSD: Nail Safety Device, there is a nail penetration test among the battery test items
  • **PPS: Polyphenylene Sulfide
  • ***PP: Polypropylene
  • ****PFA: Perfluoroalkoxy
Part name Current collector
positive		 Current collector
negative		 Seal pin PFA ball NSD Side retainer
Function
  • Connection with Rivet Terminal
  • J/R connection provided
  • Fuse functioin
  • Connection with Rivet Terminal
  • J/R connection provided
  • Sealing after electrolyte filling
  • Sealing after electrolyte filling
  • Reduce J/R energy by forming an external short when penetrating
  • Insulation between current collector and can
  • Prevention of dents by the current collector during Crush*
Standard AL 1050-H18 C1100 AL 1050-H14 PFA C1100+PP PP-FORM
Image
  • *Crush: There is a crush test among the crimping and battery safety evaluation items
④ Process
  • Sub Assembly
    - Lid plate Assembly2021-08-14
    Lid plate supply -> OSD welding -> Vent welding -> Leak inspection -> ATC & Buffer
    - Current Collector Assembly
    Parts supply -> Rivet caulking -> Laser welding -> Inspection -> Tray loading
  • Main Assembly
    Rivet press -> Laser welding -> Leak inspection
⑤ Inspection & Packing(ATC*)
  • Inspection process
    Quality check -> Visual check
  • Packing(ATC)
    ATC(Short inspection, Connection resistance test, Flatness test, CC distance/angle inspection, Inspection for CP insert Height, Terminal Height inspection, CC side inspection) -> Packing
  • *ATC: Automatic Tray Changer or Automatic Test Check