Whitepaper: Understanding Battery Management Systems
This whitepaper provides an in-depth look at Battery Management Systems, exploring their architecture, key features, and how they contribute to battery safety and longevity.
Battery management systems (BMSs) are discussed in depth, as are their applications in EVs and renewable energy storage systems. This review covered topics ranging from voltage and current monitoring to the estimation of charge and discharge, protection, equalization of cells, thermal management, and actuation of stored battery data.
This book focuses on critical BMS techniques, such as battery modeling; estimation methods for state of charge, state of power and state of health; battery charging strategies; active and passive balancing methods; and thermal management strategies during the entire lifecycle.
Cell balancing: Over time, the cells in a battery pack can become unbalanced, with some cells having higher or lower charge levels than others. A BMS can balance the cells by ensuring each cell is charged and discharged evenly, which helps maximize the battery run time.
A battery management system oversees and controls the power flow to and from a battery pack. During charging, the BMS prevents overcurrent and overvoltage. The constant-current, constant-voltage (CC-CV) algorithm is a common battery charging approach used in a battery management system.
PDF version includes complete article with source references.
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