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EXA technology status. Lithium Polymer Batteries. 動能科技. IC (腦 Brain ). LCD ( 臉 Face). 電池(心臟) Battery, Heart. Three major components. V. 隔離膜. Cathode. Anode. Discharge Li + transfer. MCMB. LiCoO2. Lithium ion battery. The principle of Lithium ion battery.
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EXAtechnology status Lithium Polymer Batteries 動能科技
IC(腦Brain) LCD (臉 Face) 電池(心臟) Battery, Heart Three major components
V 隔離膜 Cathode Anode Discharge Li+ transfer MCMB LiCoO2 Lithium ion battery
The principle of Lithium ion battery Cathode 正極: LiCoO2 Li(1-x) CoO2+xLi+ +xe- Anode 負極: C6 +xLi ++xe- Lix C6 Charge 總反應: LiCoO2+C6 Li(1-x) CoO2+LixC6 Discharge
C 3.0 V 4.2V Li0.5CoO2 3.0V Li1.0CoO2 LiC6 0.0 V Electrodes voltage change on charging/ discharging status Open Circuit Potential vs Li
What parameter affect C-rate? ESR= 0.03 ohm 3C IR drop = 0.03*2A = 0.06 V
To prevent electric short between cathode and anode To provide ion diffusion path on battery Shutdown ion diffusion path when overheat Function of Separator
Electrochemical stability Quality of SEI (Solid electrolyte Interface) film Affect operation temperature for batteries Safety of battery Effects of electrolytes
電源的應用模式—如何選擇(要求)電池 • 大電流模式 high C-rate discharge mode: 電動車,電動工具,模型飛機,模型汽車。 • 中電流放電模式: GSM 模式,數位相機,MP3 (with HD), Video player, PHS, PDA,NoteBook PC,電子字典 • 小電流放電模式:藍牙耳機,MP3 (with CF)
Discharge curve on different temperature of Merry EXA AL501430A (150mAh)
Discharge capacity of Merry EXA AL501430A (150mAh) on various temperature
AL501430A (150mAh) UL_1642 safety test Pass UL_1642 test
Product Roadmap • Capacity measuring conditions : charge ( CC/CV : 0.2C/4.2V, 0.05C ) discharge ( 0.2C/E.V = 2.75V ) • This information contained herein may be changed without prior notice.
Voltage forbidden area 4.35V 4.35V Voltage warning area 4.2V 4.2V Battery Usable Area 2.8V 2.8V Voltage warning area 2.5V 2.5V Voltage forbidden area Working Voltage Windows of LPB
THE END Thank You For Your Attention!