Products Description
The equipment has the function of manually loading positive and negative electrode sheets, separators, and tapes, and after completion, the positive and negative electrode sheets, separators, termination tapes, and protective tapes are fully automatically wound according to the predetermined product and process requirements. It has the function of monitoring length and diameter, and can perform chamfering, through-hole, and short-circuit tests on the electrode group. The equipment has a stable and reliable working state and process guarantee.
Process flow:
Separator feeding ——> Termination tape and protection tape feeding ——> Positive and negative electrode sheet feeding ——> Positive and negative electrode foil joint detection ——> Pole group winding ——> Length control ——> Paste termination tape and protection tape ——> Final diameter monitoring ——> Chamfering ——> Through hole ——> Short circuit test ——> Good product identification
Technical Parameters
Material Specifications:
| Materials | Conveying method | Material single piece length(mm) | Material width(mm) | Material thickness(μm) | Maximum outer diameter (mm) | Inner diameter(mm) | ||
| Size range | Size range | tolerance | Size range | tolerance | ||||
| cathode electrode | Coil | 600～6000 | 80-160 | ±0.1 | 100~320 | ±10 | 400 | 75.8 |
| anode electrode | Coil | 600～6000 | 80-160 | ±0.1 | 100~320 | ±10 | 400 | 75.8 |
| Battery separator | Coil | 80－160 | ±0.1 | 16~50 | ±4 | 350 | 75.8 | |
1.Product technical requirements (multi-pole winding is possible):
1) The outer diameter (diameter) range of the formed pole group: D = φ25-φ70mm, the outer diameter (diameter) control tolerance: ±0.8%.
2) The diameter range of the winding needle: φ8-φ20mm (standard d = φ8 mm, the diameter and tolerance of the winding needle are determined according to the specific pole group winding process requirements).
3) The winding length range: 1000-6000 (depending on the material thickness, the length varies, the maximum product outer diameter is φ100 mm), the accuracy is ±2mm (depending on the specific pole group winding process requirements, the winding length and tolerance are determined),
4) The height range of the formed pole group: b = 100 – 170mm
5) Termination protection tape: 1.1-2 weeks of bonding are adjustable, the bonding position is adjustable, the overlapping length is: 50-360 mm, and the termination tape can be pasted simultaneously or in steps. The upper and lower accuracy is ± 1mm;
6) The double-sticking structure is adopted.6) The edge alignment of the formed pole group.
Pole group winding accuracy: the alignment error of positive and negative pole pieces and the alignment error of diaphragm to pole piece is controlled within ±0.5mm; during the winding process, the deviation error of pole piece and diaphragm is less than ±0.5mm;
7) The length error of the winding pole piece is ±5mm;
8) The pole piece cutting method: cutting with a cutter, the cut is flat and smooth; the cutter material is made of carbide to ensure the sharpness of the blade.
9) The pole piece insertion length error: ±1mm;
10) It has the function of pressing the current collector into a cone; the two ends of the workpiece are chamfered.
11) Through hole: The surface of the diaphragm in the hole after the through hole is flat and smooth, and there should be no diaphragm dislocation and bruise.
12) Short circuit detection: The pole group is required to be undamaged, the positive and negative poles are in good contact, and the resistance <2MΩ is considered a short circuit, and the specification range can be set.
2.Equipment technical requirements
1) Winding speed: For pole pieces with a length of about 5000mm and a width of about 100mm, the target is: 4-5pcs per minute when the equipment is running normally and continuously;
2) Manual feeding and manual tape splicing of positive and negative pole pieces, manual feeding and splicing of diaphragms and tapes, automatic winding, automatic tape application, and automatic unloading.
3) The termination tape has a spiral material tray, and there are brackets between them for positioning and alignment.
4) The positive and negative pole pieces are corrected by a transparent type, and the alignment of the pole piece shearing edge and the other pole piece coating edge is controlled to be ≤ 0.5mm (the alignment on the other side is guaranteed by the tolerance of the pole piece material), and the accuracy control range of automatic correction is within ±0.1mm.
5) Reasonable structural design and convenient operation for employees.
6) There is a baffle isolation during the transmission of the diaphragm and the pole piece to prevent the pole powder from falling into the diaphragm; a transparent partition is used between the diaphragm and the pole piece to prevent the pole powder from falling on the diaphragm.
7) The pole piece has a brush dust removal mechanism.
8) It has the functions of setting the diaphragm tension and automatic deviation correction. The diaphragm tension is set, adjusted and managed by the digital setting method of the touch screen.
9) The diaphragm and the pole piece are clamped and loaded by pneumatic tensioning; it is equipped with limit blocks for the diaphragm, pole piece and tape (to ensure that the loading is in place at one time) to achieve fast loading. ;
10) It has the functions of dynamic measurement and control of the pole group diameter after winding and gluing, and tracking the pole group diameter. The winding is controlled in length, and the diameter is detected after the pole group is glued. The final pole group diameter can be monitored and sampled, and it has the functions of alarm and automatic retest. The diameter measurement frequency can be adjusted according to the size of the pole piece thickness error. The winding pole piece length error is ±2mm. The diameter is measured by a contact sensor.
11) The operation interface is a human-machine touch screen mode, with abnormal working status alarm function, abnormal detection alarm function and abnormal alarm information display function. The fault location and fault information can be displayed on the touch screen, and the fault location and information prompts are concise and clear.
12) The output end of the equipment is reserved for collecting capacitors, and a sensor is added at the end of the conveying trough. When the turnover box is full of workpieces, an alarm is sounded; the equipment alarm prompts that the material box is full. The turnover box is designed reasonably. The material is unloaded with a gentle device to avoid collisions between pole groups.
13) It has an alarm information backup and storage function (record the time and content of the alarm).
14) A separate electrical control box and pneumatic part are set up.
15) The diaphragm platform and the belt pressing platform are set to ensure that the belt is flat.
16) The whole machine is equipped with a dust cover.
17) It is equipped with a vacuum dust removal device for pole piece cutting, pole group winding and other parts.
18) The equipment design strives to have fewer types of tooling for changeover, fewer quantities, and simple changeover; by replacing the corresponding tooling fixtures and adjusting parameters, the winding of all types of batteries within the required size range can be achieved, and the fixture replacement is convenient. The equipment has strong adaptability and has the winding capacity within the required range for pole groups of different specifications.
19) The equipment automatically records the service life of wearing parts (such as cutters, etc.) and alarms according to the set service life.
20) There is a delay and an alarm after clicking the operation button.
21) The electrical box control box is equipped with a door lock.
22) Equipment configuration requirements: The equipment touch screen uses the Kunlun Tongtai brand, and the PLC uses the Panasonic brand. Pneumatic components use SMC and CKD brands, etc. Other sensors use Keyence and Omron brands. If the above brands cannot be met, the selected substitutes should have the same quality as the above brands.
23) Install a buffer and filter device for compressed air, and the filter must have good oil and water removal capabilities.
3.Equipment working conditions
1.Power supply: three-phase five-wire system: AC380/or single-phase AC220V, voltage fluctuation range: ±10%;
2.Compressed air: 0.45-0.6Mpa;
3.Ambient temperature: 20-35℃;
4.Relative humidity: 30-55%HR;
5.No corrosive gas, liquid, or explosive gas on site.
4.Acceptance conditions
- Factory acceptance qualification standard
After the equipment is fully assembled and debugged, the factory acceptance is carried out. All accompanying documents and instructions and other technical materials are complete.
①. The materials used for acceptance and testing are provided by the user free of charge.
②. The equipment is continuously produced for 1h, and the yield rate of the produced products is required to be not less than 98%, and the equipment operation rate is not less than 95% (except for faults repaired within 10 minutes).
③. The acceptance is participated in by the engineering and technical personnel designated by both parties and the acceptance report is signed jointly.
④. After the acceptance is qualified, it can be packaged and allowed to leave the factory.
- Final acceptance qualification standard
After the equipment arrives at the factory for installation and debugging, and confirms that the random information and spare parts are complete, the acceptance is carried out after confirmation by both parties.
①. The materials used for acceptance and testing are provided by the user free of charge (in accordance with the requirements of this agreement);
②. The formal acceptance is carried out after the equipment is installed and debugged in the factory. During the acceptance, the production is continuous for 2 hours, and the requirements are: the yield rate of the products is ≥98%; (the calculation method is: the actual production time is the time after the equipment is shut down, the replacement of raw materials, the parameter adjustment and other time is removed, and the total number of pole groups wound during this period is divided by the actual production time to obtain the pole group winding speed during continuous production), the equipment runs stably and reliably, and the equipment utilization rate is ≥95%.
③. The acceptance is participated in by the engineering and technical personnel designated by both parties and jointly signed the acceptance report.
5.Other requirements
- Spare parts and special tools provided by the manufacturer upon delivery: 1 set of winding needles/unit (according to 8mm winding needles). 1 set of diaphragm cutters, 1 set of pole piece cutters; 1 set of special tools and toolboxes.
- The manufacturer provides a list of documents.
- Schematic diagram of common fault handling, circuit wiring diagram.
- copy of the equipment operating manual (including equipment structure introduction, operating instructions, manual control number function description, alarm signal corresponding position and solution description).
- Instructions for the main components of the equipment.
- From the date of signing the final acceptance minutes, the manufacturer is responsible for free and timely maintenance of non-human faults within one year (the manufacturer should rush to Party A’s site 36 hours after receiving the user’s notice).
