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Conclusion:

Conclusion:. Require different levels of safety and protection(IEEE1625 is a good example) Both charger(integrated into battery or not) exist Small battery system use less protection and it has lower requirement(it can cover by S-8211 from Seiko)

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Conclusion:

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  1. Conclusion: • Require different levels of safety and protection(IEEE1625 is a good example) • Both charger(integrated into battery or not) exist • Small battery system use less protection and it has lower requirement(it can cover by S-8211 from Seiko) • Charge can in system but fuel gauge & protection typically follow the battery • “system side” gauge, but protection still remains with cells

  2. Charger • Fuel Gauge • Protection

  3. Bq24273 serious • Protection(over-voltage, short-circuit…) • Integrated charge current sense element • Safe and accurate battery management • NTC monitoring inputs

  4. Electric double-layer capacitor(supercapacitor) • Long life • Low cost per cycle • Very high rates of charge and discharge • Extremely low internal resistance • Consequent high cycle efficiency(95% more)

  5. Heavy (the amount of energy stored per unit weight is generally lower than that of an electrochemical battery) • High self-discharge • Low maximum voltage

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