10 Series Battery Protection System Design Based on S-8261

Abstract

Single lithium battery protection circuit is easy to implement, but it is not widely used at present. This paper introduces a method of realizing power management for a lithium ion battery pack of multi-cell in series. A chip named S-8261 is the main component of the circuit system. The chip was designed for single-cell application. But we use it in 10 series battery protection system. The circuit system can provide over charge, over discharge, over current and short circuit protection for lithium battery. Circuit uses a simple and effective measure for energy balance which can improve the discharge efficiency of lithium batteries. At the same time there is a way to solve the heating phenomenon occurred during using. The system is simple to implement, low cost, and also efficient.