Cell system battery energy storage system BESS realize and release the main carrier battery recycling plant, its size and operational capacity of the state is directly related to its ability to convert BESS energy security and reliability. Through serial / parallel battery cell may be implemented to expand the capacity of the battery system, i.e., large-capacity battery system (Large Capacity Battery System, LCBS). Cell terminal voltage is low due to limited specific energy and specific power, charge and discharge rate is not higher factors restricting battery recycling, LCBS generally composed after tens of thousands of cell through which consists of series and parallel. More from the battery cell via the series / parallel manner to LCBS, in the actual development and application of a common burst mode: first plurality of cells into the serial / parallel connection to form a battery module (Battery Module, BM) cells recycling factory, then the number of battery modules in series to the battery string, and finally in parallel by multiple cell strings made by LCBS. Figure 1-3 is a common group LCBS schematic manner, the battery system is composed of m cell strings connected in parallel, each battery string consisting of n battery cells or modules in series. Further, in the battery system group process is commonly used in a set of design principles: the string of battery cells in the battery module / the number of parallel to facilitate management and replacement of the premise, taking into account the number of device interface corresponding to a battery management system be grouped; The number of battery modules in series with the battery string to string battery terminal voltage design requirements may be; the number of parallel strings LCBS battery capacity by BESS design requirements, and operating mode redundancy factors. BMS battery management system is a real-time monitoring system constituted by an electronic circuit device, can effectively monitor the various states of the battery system (voltage, current, temperature, state of charge, health status, etc.), the charging and discharging of the battery system processes security management (such as to prevent overcharge, over-discharge management), the battery system fault may occur alarm and emergency protection treatment and running a battery system to optimize control and ensure that the battery system is safe, reliable and stable operation. BESS BMS system is an indispensable important component is BESS effective, reliable operation guarantee. Battery state of charge at all levels of the system and its components (State of Charge, SOC) is the realization of the entire battery system is safe and reliable operation as well as its precise management and control of the key indicators of battery recycling project, therefore, an accurate estimate of the battery systems at all levels of SOC and its components is one of the most important functions of BMS, is also one of the key research content of this article. High Battery Recycling | East in mind renewable resources (certified) | Baiyun battery recycling by Dongguan Chang Ping Tung Kee provide renewable resource recycling. Dongguan Chang Ping Tung Kee renewable resource recycling (www.dongji8.com) is Dongguan, Guangdong, scrap recycling leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Renewable resources in the East in mind the leadership of the staff warmly welcome all inquiries negotiations to create the East in mind a better future for renewable resources.