Rechargeable 901744 Li-Ion Battery 3.7V 680mAh Lithium Polymer Battery with KC

BATTERY FEATURES

• 100% brand new
• High quality and high capacity!
• Built-in protection circuit PCM for prevent over charging or over discharging
• Size: 8.5mm(H)*25mm(W)*40mm(L)
• Rating: DC3.7V 680mAh

BATTERY SPECIFICATION

BATTERY APPLICATION

• Smart mobile phone,electronic products, GPS,GPS Navigation
• PSP,PDP,Learning machine,battery hair straightener
• Miner’s lamp,digital products. Portable electric tools,Music box
• Hair dryer,robot vacuum cleaner,wireless video doorbells
• Massager, electric eyelash curler, Notebook, PDA, portable fax and printer
• Tablet pc, Modality equipment: Digital camera, Digital Video, mobile DVD
• Bluetooth, wireless devicesWearable electronics devices

INTERIOR AND EXTERIOR GALLERY

BATTERY PRODUCTION PROCESS

Mixing

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

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.

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. Before 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.

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.

PACKING&DELIVERY