Lithium ion battery 18650 21700 cylindrical cell full automatic
electrode slitting machine
1.1 Introduction of principle
The rolled cathode/anode electrode is loaded into the roll
mechanism, and through the power traction, the electrode is sent to
the cutter set which is arranged according to the process
specifications for slitting, and the upper and lower rewinding
device collects the slit electrode into the roll, and the edge
materials are collected by the edge material device. The equipment
is assisted by the deviation correction system, tension drive
system, dust suction system (including knife suction dust) and
other auxiliary precision operation to ensure the stable slitting
of the electrode, burr, straightness and other process indicators
within the process range.
1.2 Process flow
Transfer carriage Loading the material to unwind reels→èreceived
platform→èTraction roller→èSlitting knife setè→Over-roller set
→èSeparately up and down sliding differential rewinding axis→èEdge
material rewinding→èSet the required electrode tension→èSwitching
the electrode alignment system to automatic→èPress the system to
start button→èThe equipment automatically slitting and collects in
rolls.
| No. | Item | Technical parameter | Remark |
1 | Suitable for the material | Electrode with rolling pressed LFP,LCO,LMO,NMC,LTO,Carbon,Graphite | |
2 | Running foil parameter | Aluminum foil(AL):thickness:9～30um; Width: 50～500mm Roll diameter: Max.400mm | |
Cupper foil (Cu):thickness: 5～30um Width:50～500mm； Roll diameter: Max.400mm； | |
| 3 | Roller width | 550 mm | |
| 4 | Slitting width | 30~500mm | |
| 5 | Mechanical operating speed | 50m/min | |
| 5 | Slitting speed | 1-40m/min | Depending on the slitting effect |
| 7 | Electrode thickness range | 50-300μm | |
8 | Slitting method | 1, Combined slice knife slitting; 2, Nishimura type knife set structure. 3, Slitting specifications, 18650/21700(7 lanes,7knives
/set,included Cathode and Anode slitting knives) | |
| 9 | Rewinding method | Two axis slip difference axis dislocation rewinding | |
