Mixing(配料)
Mix solvent and bound separately 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 use back reverse 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.
There are four temperature zones, they are independently controlled. Zone one sets at 55 degree C, zone two sets at 65 degree C, zone three sets at 80 degree C, zone four sets at 60 degree C. The speed of coating is 4 meters per minute. You see 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 set at 60 degree C. Throughout the coating, we use 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 reverse 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 machine at about 7meters per minute. Be
fore compress we clean the electrode with vacuum and brush to eliminate any particles. Then the compressed electrode is wound to a big roll. We use micrometer to measure the compressed 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 section 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 length 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 section 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 course of Jelly roll, firstly, we place the separator 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 separator. 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 insert the Jelly roll into the can.
Control points:
1. When winding to the end of the anode, covering the anode completely by the separator.
2. In the whole process, it is the most important points to ensure the best alignment among the cathode, the anode and the separator for the Jelly roll. The separator has to cover the anode and the cathode, and the anode has to cover the cathode completely. These 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 & inserting
Put the tape on the two side of J/R, To prevent J/R being hurt in the insertion process. Put a piece of tape between cathode tab and J/R .Because anode electrode is wider than cathode electrode.
Put the bottom tape.
Insert 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 second 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 insertion 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 defect 次品 red bin 红盒
Laser welding
This is the Laser welding room! The first process is welding for the aluminum cap, specially connect the rivet with the weld plate to prevent the cell impedance excursion. The second process is the Laser seam welding. In the process, it must ensure the intensity and airproof characters of the weld. After the cell is welded, we would perform the leak checking, the short circuit checking and the weighing checking.
Vocabulary:
Laser welding room 激光焊接车间Cap 盖板Rivet 铆钉Plate 镍片 impedance excursion 内阻漂移 intensity 强度 leak checking 检漏 short circuit checking 测短路 weighing checking 称重 Oven drying electrolyte filling and storing
This is the process of cells oven drying at 80℃ for more than 12 hours under vacuum. After oven drying, the cells are transferred to the process of electrolyte filling through this channel. The electrolyte filling performs in dry room. The electrolyte is injected in two times so that it can be filled easily and sufficiently. When filling, vacuum first, then inject electrolyte. After that, we repeat vacuum and vent to room pressure several times. Finally the cell is put off at room pressure, then weigh the cell in order to check the amount of electrolyte. After weighing, we seal with tape onto the filling port to prevent the cells absorbing water during storing. We store the filled cells for 24 hours at room temperature so that the electrolyte can be saturated sufficiently by the anodes and cathodes.
Vocabulary:
oven drying 烘烤 vacuum 真空 electrolyte filling 注液 electrolyte 电解液 room pressure 大气压 filling port 注液孔 storing 陈化 saturated 浸润 anode 正极 cathode 负极
Pre-charge and ball seal
At first, we place a piece of absorb cotton above the filling port to absorb the excess electrolyte. This is the first process.
The second process is performing a pre-charge at 0.1C rate for 390 minutes.
After the pre-charge, we take a voltage checking to the cell at once. If the voltage is lower than the standard, it needs to be re-charged.
The fourth process is the ball seal. we must complete this process in 15 minutes. First, put the steel ball in the right place. Then, give pressure to it so that the steel ball can fill the filling port.
In the whole process, we must make sure that the temperature and humidity are in the regular range.
Finally, the process is cleaning to eliminate the electrolyte on the cell surface with acetone solvent.
Vocabulary:
filling port 注液孔 electrolyte 电解液 pre-charge 预先充电 ball seal 封口 voltage checking 量电压 regular range 合格范围 eliminate 消除 acetone solvent 丙酮溶剂
Aging and Formation
This is the aging room. We age cells at 35~40 Degree C for 7 days. The temperature is controlled by t
wo heating instruments which are set at 38 Degree C. Then we transfer cells to the testing workshop. First, we check the voltage of cells with multi-meters. According to voltage, we divide the cells into acceptables and defects. Formation is done at 1.0 Capacity rate for 140 minutes to 4.2 Voltage. After that, check thickness and impedance. At last, we transfer the acceptables to the storehouse.
Vocabulary:
aging room 老化房heating instrument 加热器testing workshop 检测车间 acceptables 良品 defects 次品 formation 化成 thickness 尺寸，厚度 impedance 内阻 storehouse 仓库
标识牌内容(中文)
英文 1 正极球磨 Cathode Ball Mill Mixing 2 负极球磨 Anode Ball Mill Mixing 3 正极混浆 Cathode Slurry Mixing 4 负极混浆 Anode Slurry Mixing 5 正极涂布 Cathode Coating 6 负极涂布Anode Coating 7 极片烘烤Electrode Drying 8 正极压片 Cathode Compress 9 负极压片 Anode Compress 10 正极分大片 Cathode Cutting 11 正极分小片 Cathode Slitting 12 负极分大片 Anode Cutting 13 负极分小片 Anode Slitting 14 切镍带 Anode Tab Cutting 15 极耳铆接 Anode Riveting 16 极耳贴胶纸 Anode Tab Taping 17 大片贴胶纸 Cathode Edge Taping 18 刷片 Electrode Brushing 19 极耳超焊 #1 Cathode Tab Welding #1
装配车间英语
极片烘烤 Electrode Drying Area
裁隔膜纸 Separator Cutting 壳体贴膜 Out-film Apply
超焊铝镍带Cathode Tab Welding 贴内壁胶纸Inner Insulation Taping
卷绕Jelly Roll Winding
检验#1 Checking Station#1
整形Jelly Roll Forming 贴侧面胶纸J/R Side Taping
贴上端胶纸J/R Top Taping 贴底部胶纸J/R Bottom Taping
装壳Jelly Roll Insertion 点焊负极Anode Tab Welding
剪正极耳Cathode Tab Cutting 超焊正极耳#2 Cathode Tab Welding #2
二次点焊Spot Welding 套隔圈Insulator Insertion
甩壳Final J/R Insertion 卡盖板Cap Installation
检验#2 Checking Station #2 点焊盖板Cap Pre—Welding
激光焊接Laser Seam welding 整形Forming
检验漏气Leak Checking 短路测试Hi—pot
称重分档Weighing Sorting
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