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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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Presentation Transcript
slide1

EXAtechnology status

Lithium Polymer Batteries

動能科技

three major components

IC(腦Brain)

LCD (臉 Face)

電池(心臟)

Battery, Heart

Three major components
lithium ion battery

V

隔離膜

Cathode

Anode

Discharge Li+ transfer

MCMB

LiCoO2

Lithium ion battery
slide4

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

slide5

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
What parameter affect C-rate?

ESR= 0.03 ohm

3C

IR drop = 0.03*2A

= 0.06 V

function of separator
To prevent electric short between cathode and anode

To provide ion diffusion path on battery

Shutdown ion diffusion path when overheat

Function of Separator
effects of electrolytes
Electrochemical stability

Quality of SEI (Solid electrolyte Interface) film

Affect operation temperature for batteries

Safety of battery

Effects of electrolytes
slide16
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)
product roadmap
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.
working voltage windows of lpb

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
THE END

Thank You For Your Attention!

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