中文摘要：

为保证电动自行车锂电池组安全、长寿命的运行,需为其配备专用管理保护电路。为此,针对一款4并10串规格的锂电池组设计了一套保护电路板,采用S-8209A保护芯片,实现了过充电保护、过放电保护、电池充放电平衡、过电流保护、正常带载等功能,已被可靠应用于某款电动自行车的锂电池组中。

英文摘要：

The lithium battery with superior performance is the development trend of the electric bicycle power,but needs a dedicated protection circuit to work with so as to ensure the safety and long-period operation.In this paper,a protection circuit board including S-8209A was designed for the lithium battery set with 4-parallel and 10-serial connection mode.It achieved the functions of overcharge protection,overdischarge protection,overcharge-overdischarge balance and overcurrent protection.The circuit has been already applied to the electric bikes with the lithium batteries.