鋰離子電池要求多周期支持，以最大限度地提高正常運行時間

　　便攜式設備的充電系統(tǒng)并不總是在設計上給予高度重視，但它可以在系統(tǒng)的電池壽命中發(fā)揮重要作用，并適當優(yōu)化，可以允許使用較小的電池組比其他需要的。不僅是小型電池管理控制器的需要，但智慧也需要部署戰(zhàn)術讓電力系統(tǒng)被正確優(yōu)化。本文將著眼于鋰離子化學在充電方面的需求和什么技術可以用來最大限度地提高能量傳遞和存儲和總結(jié)的關鍵解決方案可用于此目的。

　　鋰離子（李離子）電池化學大大提高了便攜設備的功率密度相比，舊技術，如鎘鎳，與它，這些系統(tǒng)的正常運行時間在一個單一的收費。李離子有一半的自放電率的鎳鎘和鎳金屬氫化物的化學物質(zhì)，這也有助于保質(zhì)期，允許設備被運送充電，使客戶不必堵塞他們的購買前使用它們。

　　The downside of Li-ion compared to earlier chemistries is that charging is more complex than with older technologies. However， careful management can be employed to maximize the power delivery of li-ion not only to provide users with a better experience， but also allow designs to be downscaled to use smaller batteries. As the battery is a significant proportion of the size and weight of wearables， any saving made here that can be made through the substitution of one charging circuit for another can be dramatic.

　　The key issue with Li-ion batteries is that they are highly sensitive to overcharging， since too high of a voltage will introduce material stress that shortens the life of the battery. They also present a risk to safety if charged beyond a voltage of 4.2 V per cell.