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Automatic stack welding machine is suitable for half battery module to automatically complete the welding process of bus bar. It mainly includes the layout of positive and negative bus bars, the location of the camera to detect the battery, the welding work between the welding strip and the bus bar, and the equipment must be able to dock with the MES system.
1.The main functions of this device
The whole machine adopts the method of separating the battery string from the glass. The battery string is lifted to a certain height by a suspension device and then welded in suspension. The preparation of the busbar for the symmetrical components at both ends of the whole battery piece and in the middle of the half piece is completed, and the busbar is welded with the welding strips at both ends of the battery string. It has the following functions：
1，Simultaneously compatible with 2-6 large string component versions，
2，One device realizes the welding work of busbars for half-cell modules and full-cell modules.；
3Vacuum suction grabs the battery string for one-time emptying welding，。
4,Roll-shaped busbar strip 。
5, Bend the L-shaped lead of the half battery cell module upward。
6，Conventional short material strip welding function。
7，Visually inspect the arrangement neatness of battery cells, and rework the unqualified products that flow out.。
parameter | Output (Technical Requirements) | ||
beat | Standard Configuration Model Takt Time | Half pieces (≤65S with welding at both ends and in the middle), 664 pieces per 12 hours | |
Whole piece (welding at both ends within ≤70S), 617 pieces/12 hours | |||
Overall yield | ≥97% (based on the component unit, the layout accuracy of components flowing into the busbar welding machine shall be within ±0.5mm) | ||
Fragmentation rate | <0.02% (calculated by piece) | ||
Maximum compatible component size | 2400X1400mm (the minimum component size is 680*420, and the minimum can be made into 2 strings) | ||
Compatible number of grid lines | Compatible with 5-16 gates | ||
Battery cell specifications | / BB Main busbar spacing mm (standard configuration for one type of battery cell specification, other battery cells are optional) Upgradable battery specifications for a fee: 158.75mm-182mm/5BB-16BB (Later, it can be upgraded to other different battery types for a fee. For battery cells of the same size, changing the main busbar only requires replacing the pad. For other 156mm-158mm, 18Xmm, 210mm battery cells, mutual switching requires replacing the welding head, pad, etc., and other hardware needs to be adjusted.)
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Feeding mechanism | Quantity of synchronous belts | 4root | |
Feeding method | Long side feeding of components | ||
Allowable maximum deviation of component inflow | The deviation of the glass center is less than 30mm. | ||
Positioning mechanism | Motor/module/synchronous belt pulling | ||
Number of positioning points | ≥5dot | ||
Positioning method | Mechanical positioning | ||
Feeding method | Roll loading and automatic cutting | ||
Material roll size | Shaft hole 20-25mm, outer diameter <210mm | ||
Material roll load bearing | ≤15KG | ||
Compatible busbar width | Factory matching4mm、6mm、7mm、8mm | ||
Compatible busbar thickness | 0.18mm-0.4mm | ||
Cutting precision | ≤0.5mm | ||
Mode of transportation | Servo motor + mechanical positioning | ||
Positioning method | Mechanical positioning + vacuum adsorption | ||
Positioning accuracy | ＜0.5mm | ||
2-10mm可调 | |||
汇流条超焊Distance from busbar to battery cell带长度 | ≤2mm(length error) | ||
Cooling method | Air cooling | ||
Welding method | Electromagnetic induction welding | ||
Welding head control mode | Current control/time control | ||
Welding heating time | ≤4s | ||
Welding temperature control accuracy | ±10℃ | ||
Welding tensile force | Welding tape welding tensile force ≥2N/mm (busbar and welding tape) | ||
