100MWH EV Car Lithium Battery Production Line of 1st-coeng

Categories	Battery Production Line

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100MWH EV Car Lithium Battery Production Line

Overview:

The production of prismatic lithium-ion battery cells is divided into three major stages: Electrode Production (Front-end) , Cell Assembly (Mid-end) , and Formation & Grading (Back-end) . Prismatic cells feature a rectangular aluminum or steel casing and use either a stacking or winding process for electrode assembly, offering superior structural stability and thermal management compared to cylindrical or pouch cells .

For a 100 MWh annual capacity line (typically producing cells of 100Ah–300Ah using LFP or NCM chemistries), the following equipment is required

Production process flow:

Section 1: Complete Equipment List

Below is a comprehensive equipment list arranged by production stage:

S/N	Equipment Name	Function
Stage 1: Electrode Production (Front-end)
1	Cathode Mixer	Blends cathode active material (NCM/LFP), conductive agent (SP), binder (PVDF), and solvent into homogeneous cathode slurry
2	Anode Mixer	Blends anode active material (graphite), binder (CMC/SBR), conductive agent, and deionized water into homogeneous anode slurry
3	Cathode Slot Die Coater	Applies cathode slurry uniformly onto aluminum foil current collector
4	Anode Slot Die Coater	Applies anode slurry uniformly onto copper foil current collector
5	NMP Recovery System	Recovers and recycles NMP solvent vapor from the coating drying process
6	Cathode Calender (Rolling Mill)	Compresses dried cathode electrode to achieve precise thickness and density
7	Anode Calender (Rolling Mill)	Compresses dried anode electrode to achieve precise thickness and density
8	Cathode Slitting Machine	Slits coated cathode electrode web into specific widths
9	Anode Slitting Machine	Slits coated anode electrode web into specific widths
10	Drying Oven (Multi-zone)	Removes residual solvent from coated electrodes before calendering
11	Electrode Inspection System	Detects coating defects, surface flaws, and alignment issues
Stage 2: Cell Assembly (Mid-end)
12	Cathode Die Cutting Machine	Punches/notches cathode electrode into precise shape with tab formation
13	Anode Die Cutting Machine	Punches/notches anode electrode into precise shape with tab formation
14	Laser Notching Machine	Alternative to die cutting; uses laser for high-speed tab/notch formation
15	Auto Stacking Machine	Alternately stacks cathode, separator, and anode layers to form electrode stack (Z-folding)
16	Winding Machine	Alternative to stacking; winds cathode, separator, and anode into jelly roll
17	Hot Press Machine	Thermally compresses the electrode stack or jelly roll to ensure uniform adhesion
18	X-ray Tester	Inspects internal alignment of electrodes and detects any foreign particles
19	Ultrasonic Battery Core Pre-welding Machine	Pre-welds electrode tabs to collector plates
20	Ultrasonic Battery Core Welding Machine	Final ultrasonic welding of tabs to cap assembly terminals
21	Cover Plate (Cap) Welding Machine	Welds the cap assembly to the cover plate components
22	Battery Core Film Covering Machine	Applies insulating Mylar film to five sides of the electrode stack
23	Core Inserting Machine	Places the insulated electrode stack into the aluminum prismatic casing
24	Integrated Machine for Shell Welding	Laser-welds the casing body and cap assembly to seal the cell
25	Primary Helium Leak Tester	Performs initial hermeticity check using helium mass spectrometry
26	High-Level Vacuum Oven	Removes residual moisture from assembled cells before electrolyte filling
Stage 3: Formation & Grading (Back-end)
27	Electrolyte Filling Machine	Precisely injects liquid electrolyte into cell under vacuum
28	Soaking/Aging Shelf	Allows electrolyte to fully permeate electrode structure (typically 8–24 hours)
29	Negative Pressure Formation Machine	Performs initial charge/discharge cycles to form SEI (Solid Electrolyte Interphase) layer
30	Formation Cabinet	Multi-channel battery cycler for formation under controlled temperature
31	Sealing & Laser Welding Machine	Final hermetic sealing of electrolyte fill port after formation
32	Final Leak Inspection Machine	Second helium leak test to verify seal integrity after formation
33	Grading Machine (Capacity Sorting)	Measures actual capacity and classifies cells into grade bins
34	OCV & IR Tester	Measures open-circuit voltage and internal resistance
35	DCIR Tester (Optional)	Measures direct current internal resistance for quality classification
36	Aging Storage System	Temperature-controlled storage for post-formation cell stabilization
Ancillary & Facility Support Equipment
37	Dry Room System (Dehumidification)	Maintains dew point ≤ –40°C for moisture-sensitive assembly processes
38	Vacuum Pump Unit	Provides vacuum for drying, filling, and leak testing equipment
39	Nitrogen Generation Unit	Supplies inert gas for glove boxes and dry environments
40	Air Compressor Unit	Provides compressed air for pneumatic actuators
41	Chiller/Cooler Unit	Temperature control for formation cabinets and calendering rollers
42	MES (Manufacturing Execution System)	Centralized production data monitoring, quality traceability, and process control

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