Lithium-ion Battery Electrode Sheet Winding Welding Machine 18650 21700 Cylindrical Battery Manufacturing Equipment

Lithium-ion Battery Electrode Sheet Winding Welding Machine 18650 21700 Cylindrical Battery Manufacturing Equipment

I．Introduction

This equipment is a special production equipment for making cylindrical battery electrode. The whole production process is a full-automatic equipment that hangs the electrode roll material on the winding shaft, automatically sends the tabs, welds the tabs, pastes protective tape, and automatically cuts the finished electrode into pieces, and then enters the semi-automatic winding or automatic winding machine.

II.Specifications

A.Material

Feeding material:

B.Tab’s Size / Gluing accuracy:

B.1. Tab's Length accuracy: ± 0.3mm,

Tab in electrode direction accuracy: ±0.5mm

Anode Tabs pressing position : 7*10mm

B.2 . Tape length and position accuracy : ± 0.5mm, Tab exposed is

6~30mm

III.Equipment structure:

a. Unwinding electrode roll , cylinder up and down sliding control unwinding tension, automatic adjustment of unwinding speed;

• Dust removal device before and after welding

• The tab is a cut-off method for detecting the fixed length. The welding clip sends welding according to the edge position of the electrode to ensure the distance between the coating and the edge of the tab. The tab can choose the function of long and short.

d. The ultrasonic welding device of Al Tab, Ni Tab or Cu Tab has the function of detecting whether there is foil leakage on the bottom surface of the electrode before welding, so as to prevent welding to the coated area from affecting the welding effect;

e .Post welding tab missing weld inspection device ;

f. Fixed length traction device, buffer deviation correction device

g.Glue sticking mechanism, with deviation correction device. One group of cathode and anode electrodes are pasted together (two layers of adhesive). The position of the tape unwinding mechanism is adjustable, and it is convenient and fast to replace the tape;

h. Rewinding mechanism is the default cutting mode of the machine. If winding is required, it shall be ordered separately.

Structure description of the whole machine:

① The frame is welded from steel profiles and has undergone aging treatment. The wallboard is made of high-quality steel plates and is ground on both sides. It has high flatness and good structural rigidity to ensure operation accuracy;

② Guide roller: the aluminum alloy surface is subject to super hard oxidation treatment, which has high surface hardness and is not easy to wear;

③ Hardware and wiring are divided into functional blocks, strong and weak current are separated, and short-circuit overload, leakage and other protection functions are provided;

④ The whole machine conforms to ergonomics, the touch screen interface layout is reasonable, the parameters are adjustable, and the operation status can be dynamically displayed. In case of failure, it can be dynamically displayed and give information prompts on the touch screen, and has the function of accurate production counting;

⑤ Equipped with photoelectric alarm function;

⑥ The equipment has effective safety protection facilities such as protective cover and emergency stop.

VI. Equipment installation and commissioning

a. Air pressure: 0.5-0.7mpa , Air flow: 100L / min

b. Power supply: 220V 50Hz power: 4.0kw

c. Working temperature: - 20 ° ~ + 45 °

d. Relative humidity: ≥50%

e. Color: Grey (or specified by the customer)

f. Overall dimension: 1800 * 1200 * 1700mm

g. Weight: about 1.6 tons

V. Technical parameters

• Production speed: 25-30ppm (1 tab for each cathode and anode electrode,

1 group for each other, electrode Length :400mm )

b. Winding alignment : ± 0.5mm; Position accuracy of cutting : ± 0.5mm

c. Equipment mobilization rate: ≥ 95% (excluding the reason of incoming

materials); qualification rate≥ 98%

d. Both the cathode and anode are equipped with Kepu welding machines,

and the size of welding area is customized.

VI. Requirements for raw materials:

Electrode:

Tab

1. Slitting width tolerance: ± 0.1mm

2. S-shape error is less than 0.2mm/500mm.

Tape

Slitting width tolerance: ± 0.2mm