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The designing scheme for portable Bluetooth player backup battery
1.PCM: designed for rechargeable lithium batteries to protect circuit, the protection board needs to provide smart power calculation, overcharge, over discharge, short circuit, over current protection to avoid the hazard of burning and explosion because of its chemical properties.）
2.Protection IC: The main function of the designing scheme is to protect the chip, we use high intelligent battery management system (SBS) to manage battery safety and electricity, and constantly monitor the situation of overcharge, over discharge, over current, short circuit occurring, so that the chip can operate in a safe, stable and efficient condition.
3.Temperature switch: mainly for temperature protection design. When the temperature of the battery reach to 75 degrees due to other usual problems, the temperature switch will achieve to over-temperature protection, when the temperature drops, automatic recovery.
4.18650 battery cell: 18650/2600mAh/3.7V Li-ion cell
5.Field effect transistor: acting as a switch in the protection circuit, and balances the voltage across the load.
6.Battery Pack: PVC thermal shrinkage
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