The intermittent lithium battery coater is a three-roll transfer coating equipment, which is convenient for use in the surface coating process of various substrates. Especially used in the lithium-ion battery industry, the device is designed to facilitate the use of researchers, while meeting the requirements of coating accuracy and consistency equal to production, excellent drying effect, is the ideal choice for lithium-ion batteries, ultracapacitors, nickel batteries and other secondary battery research and development.
1. Features:
· Substrate tension control, strip stability, deviation correction device;
· Hot air oven, upper and lower double-sided blowing, high quality drying effect;
· Three-roll transfer coating, with a wide coating window;
· Comma scraper metering, with precision adjustment mechanism, to obtain high coating accuracy;
·PLC control, touch screen operation, easy to use;
· Optional solvent recovery treatment device;
1. Technical parameters and main configuration of the equipment
(1) Equipment functions:
Project | Technical parameters |
Suitable system | Lithium iron phosphate, lithium cobalt, lithium manganate, graphite, silicon carbon and other system battery positive, negative plate coating process |
Coating method | Continuous coating, intermittent coating transfer coater |
Number of oven sections | 3 sections 1.5m oven |
Mechanical speed | Not less than 4.5m/min |
Run substrate thickness | Aluminum foil (Al) : 8 ~ 30um Copper foil (Cu) :8~30um |
Roll face design width | 400 mm |
Guarantee the width of the coating | No less than 280mm |
Coating roller, backing roller | Diameter 120mm |
Scraper roller | 80mm diameter |
Coating accuracy | Better than ±3um (margin error ±5um) |
Double sided coating weight accuracy(mg/cm2) | Coating center value ±1.0% |
Suitable for paste viscosity | 2000~12000 (mPas) |
Apply dry thickness fan on one side wai | 30 to 200μm |
Thickness adjustment | Free adjustment, the dial indicator shows accuracy of 1um |
Coating length | Clearance: single piece Max.10000mm, white 8 ~ 120mm, fine Degree ±0.5mm |
Rectifying accuracy of winding | + / - 0.5 mm |
Solvent characteristics | Oil-based solvent NMP(s.g=1.033,b.p=204℃) |
Suitable for solid content range | 20 ~ 85% |
Coating size accuracy (mm) | L≤±1, W≤±0.5 |
Alignment accuracy of front and back (mm) | L≤±1, W≤±0.5 |
(2) The structure of each part:
Integral winding, head mechanism:
Items | Technical parameter |
Overroll mounting structure | The steel frame is firmly installed |
Overroll finish | Metal aluminum roll surface oxidation |
Tension control system | Automatic control of constant tension, tension range 0~50N |
Correction mode | Automatic EPC control, stroke 50mm |
Winding method | The material roll is fixed with 3- inch inflatable shaft; |
Uncoil single inflatable shaft |
Maximum unwinding reel diameter | Ф 300 mm |
Maximum bearing capacity of inflatable shaft | 80KG |
Number of inflatable shaft strips | 1 strip |
Main drive motor | Servo motor |
Overroll finish | Metal aluminum roll surface oxidation, circular runout ≤30um |
Scraper structure | Double-sided comma scraper |
Applicator roll (steel roll) | Hard chrome coated surface |
Back roller(rubber roller) | Surface wrap imported EPDM |
Adjust the intermittent height of the scraper | Manual adjustment; |
Stand-alone head position | Install and operate before drying path |
(3) Baking road
Items | Technical parameter |
Oven structure | 3 sections individually heated in top and bottom arrangement |
Oven length | 1.5m/knot, a total of 3 sections, three sections temperature control |
Material | SUS304 stainless steel |
Temperature control | Divided into normal working temperature control, overtemperature monitoring alarm protection control, each section is completely independent control |
Heating mode | Electric heating, hot air circulation structure |
Single oven heating power | 9KW,3 sections total 27KW |
Temperature in the bake | Design Max150℃, single section oven temperature difference ≤5℃ |
Blowing method | Upper and lower air blowing, upper and lower air room sharing heating body |
Air nozzle structure | The air nozzle groove is slotted by special mold |
Fan control | Contactor control |
Heating control | Solid state relays |
Fan material | SUS304 stainless steel |
Solvent recovery system | Optional |
(4) Winding mechanism: the function is the same as that of winding, as follows
Items | Technical parameter |
Travel correction | Outlet bake installation |
Tension | Automatic control of constant tension, tension range 0~80N |
Installation structure | Steel frame firmly installed |
Number of winding inflatable shafts | 1 single arm winch |
(5) Control system:
Items | Technical parameter |
Main control system | Touch screen, PLC, module, servo system |
Operation mode | Manual, automatic, emergency stop; The machine can be operated before and after |
Alarm situation | When the device fails, the touch screen will display the corresponding correction screen |
4. Equipment accuracy:
1. Hardware accuracy
Items | Technical parameter |
Scraper | Circle jump ≤±1.5um, Ra0.4, straightness ≤±1.5um |
Coating roller (steel roller) | Circular runout ≤±1.5um, Ra0.4 straightness ≤±1.5um |
Rubber roll | Circle runout ≤10um, straightness ≤ 10um |
Deviation correction | + / - 0.5 mm |
