Mixing(配料)
Mix solvent and bound parately with positive and negative active materials. Make into positive and negative pasty materials after stirring at high speed till uniformity.
Coating（涂布）
Now, we are in coating line. We u back rever coating. This is the slurry-mixing tank. The anode（Cathode） slurry is introduced to the coating header by pneumaticity from the mixing tank. The slurry is coated uniformly on the copper foil, then the solvent is evaporated in this oven. （下面的依据情况而定）There are four temperature zones, they are independently controlled. Zone one ts at 55 degree C, zone two ts at 65 degree C, zone three ts at 80 degree C, zone four ts at 60 degree C. The speed of coating is 4 meters per minute.
You e the slurry is dried. The electrode is wound to be a big roll and put into the oven. The time is more than 2 hours and temperature is t at 60 degree C.
Throughout the coating, we u micrometer to measure the electrode thickness per about 15 minutes. We do this in order to keep the best consistency of the electrode.
Vocabulary:
coating line 涂布车间 back rever coating 辊涂 coating header 涂布机头
Al/copper foil 铝/铜箔 degree C 摄氏度 temperature zones 温区
wind to be a（big）roll 收卷 evenly/uniformly 均匀 oven 烘箱
evaporate 蒸发 electrode 极片
Cutting
Cut a roll of positive and negative sheet into smaller sheets according to battery specification and punching request.
Pressing
Press the above positive and negative sheets till they become flat.
Punching
Punching sheets into electrodes according to battery specification,
Electrode
After coating we compress the electrode with this cylindering mach图片转换表格
ine at about 7meters per minute. Before compress we clean the electrode with vacuum and brush to eliminate any particles. Then the compresd electrode is wound to a big roll. We u micrometer to measure the compres春节寓意
d electrode thickness every 10 minutes. After compressing we cut the web into large pieces. We tape the cathode edge to prevent any possible internal short. The large electrode with edge taped is slit into smaller pieces. This is ultrasonic process that aluminum tabs are welded onto cathodes using ultrasonic weld machine. We tape the weld ction to prevent any possible internal short. And finally, we clean the finished electrodes with vacuum and brush.
Vocabulary:
cylindering 柱形辊压 vacuum 真空 particle 颗粒
wound 旋紧卷绕 micrometer 千分尺 internal short 内部短路
slit 分切 ultrasonic 超声波 weld 焊接
Anode making
In anode making process, we cut the material into certain lengt掠夺婚
h strips. At the mean time, we put a small piece of insulation tape to the tab in order to prevent any possible internal short. Then the prepared nickel tab is riveted on anode and pat plain. We also tape the rivet ction to prevent any possible internal short. And finally, we clean the finished electrodes with vacuum and brush.
Jelly roll
This is Jelly roll, a manual winding process. In the cour of Jelly roll, firstly, we place the parator in between central pins, press the foot switch to turn central pins about 120 degrees. Secondly, place the anode to the edge of central pins, and turn central pins about 180 degrees. Lastly, place the cathode to the edge of central pins. During the winding process, we apply tension by pressing the electrodes and the parator. We put the termination tape at the end.
After Jelly roll, we check the short circuit, then form the Jelly roll by pressing, so that it is easier to inrt the Jelly roll into the can.
Control points:
1. When winding to the end of the anode, covering the anode completely by the parator.
2. In the whole process, it is the most important points to ensure the best alignment amon
g the cathode, the anode and the parator for the Jelly roll. The parator has to cover the anode and the cathode, and the anode has to cover the cathode completely. The points are mainly checked before short checking.
Vocabulary:
Jelly roll 卷绕 Manual 手工的 Separator 隔膜纸
central pin 卷针 foot switch 脚踏开关 anode 负极片
cathode 正极片 termination tape 尾端胶纸 short circuit 短路
alignment 整齐
Taping & inrting
Put the tape on the two side of J/R, To prevent J/R being hurt in the inrtion process.
Put a piece of tape between cathode tab and J/R .Becau anode electrode is wider than cathode electrode.
Put the bottom tape.
Inrt the finished J/R into the can manually and then short circuit check by multi-meter.
Spot welding Ni tab to cap.
Ultrasonic welding the Al tab to cap using ultrasonic weld.
We have the cond spot welding to ensure the best contact between the tab and cap.
Apply top insulator, to prevent Ni tab contacting with can.
Final J/R inrtion by the centrifuge.
Cap positioning by hand. Then check the cap in the suitable position, or the defects is put into red bin ,Finally , short circuit check again to ensure that there be no internal short J/R flowing to next line.
Vocabulary:
J/R 极芯 tape 胶纸 electrode 极片 multi-meter 万用表 Spot welding 点焊
Ni tab 极耳 Ultrasonic weld 超焊 Insulator 隔圈 centrifuge machine 甩壳机
