Pole lug leveling device
A technology of tabs and mounting plates, which is applied in the direction of machining/deformation, can solve the problems of increasing the tearing and falling off of tabs, affecting the utilization rate of workshop space, and increasing the size of equipment, so as to improve production efficiency and yield, Avoid the effect of broken belt or tab falling off
Active Publication Date: 2016-10-12
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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AI Technical Summary
Problems solved by technology
When the tab is tilted at a large angle, the pressure roller will not only be unable to flatten the tab, but will also touch the tab, causing the tab to be distorted and deformed, increasing the risk of tearing and falling off of the tab; and increasing The roller diameter of the idler will not only increase the equipment cost, but also increase the equipment size, which will affect the space utilization rate of the workshop
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0023] A laser tab forming machine is used to make 300m positive pole pieces, and a tab smoothing device is installed on the roller of the laser tab forming machine. The operating speed of the equipment is 120mm / s, and the number of tape breaks during the production process is counted. in Table 1.
Embodiment 2
[0030] The positive and negative pole pieces (300 pieces each) are wound by a fully automatic winding machine equipped with a tab smoothing device on the idler roller. Both the positive and negative pole pieces are formed by laser tabs, and the incoming pole pieces are folded without tabs. Wrinkle situation, the winding speed is 60s / pcs, and the number of cores produced is listed in Table 2.
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The invention relates to a pole lug leveling device. The pole lug leveling device comprises a support connected with a carrier roller, and a brush arranged on the support. The brush is driven by a motor to rotate, and the distance between the brush and the carrier roller can be adjusted. The lengths of bristles of the brush are gradually increased from the two sides to the middle. According to the above technical scheme, when a pole lug passes through the carrier roller, the brush levels the pole lug, the pole lug is made to be attached to the carrier roller, and therefore the phenomenon of belt breaking or pole lug falling off due to pole lug root tearing is avoided; and the production efficiency and the yield of the laser pole lug forming procedure and the subsequent winding procedure are effectively improved.
Description
technical field [0001] The invention relates to the field of lithium batteries, in particular to a lug smoothing device. Background technique [0002] The traditional tab forming methods for lithium-ion batteries are ultrasonic welding tabs and mold punching tabs. In recent years, laser tab forming technology has emerged, which can improve production efficiency, battery capacity and rate performance. Laser tab forming uses a laser to cut the foil blanks on both sides of the pole piece into tabs, but due to the different calendering rates of the coating area of the pole piece and the blanks on both sides during the rolling process, the coating area and the blank area exist. Stress, the laser-formed lugs are easy to warp and fold when passing the idler, which will cause the root of the lug to tear, the pole piece to break, and the lug to fall off. The usual solution is to add pressure rollers or increase the diameter of the idler rollers on which the pole piece runs. When ...
Claims
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IPC IPC(8): B31F1/00
CPCB31F1/0035
Inventor 邢军龙
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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