What is a battery management system (BMS)?

A BMS monitors the temperatures across the pack, and open and closes various valves to maintain the temperature of the overall battery within a narrow temperature range to ensure optimal battery performance. Capacity Management Maximizing a battery pack capacity is arguably one of the most vital battery performance features that a BMS provides.

What are BMS batteries used for?

BMS batteries are used in virtually every industry where lithium-ion batteries are found, including: Electric Vehicles (EVs) Ensures battery safety, efficiency, and extended driving range. Energy Storage Systems (ESS) Balances large-scale battery packs for home and commercial solar power systems.

How does a BMS protect a battery pack?

Monitoring battery pack current and cell or module voltages is the road to electrical protection. The electrical SOA of any battery cell is bound by current and voltage. Figure 1 illustrates a typical lithium-ion cell SOA, and a well-designed BMS will protect the pack by preventing operation outside the manufacturer’s cell ratings.

What is a lithium-ion battery management system (BMS)?

Together, we’ll get the most out of your lithium-ion pack. In summary, we believe that a battery management system (BMS) is vital for efficient and safe use of lithium-ion battery packs. It not only extends battery lifespan but also monitors its health.

Do lithium batteries need a BMS?

However, they also come with strict requirements for safe operation. Without a BMS, a lithium battery is vulnerable to: A well-designed BMS prevents these issues by acting as the “brain” of the battery, constantly monitoring its state and taking protective actions when needed.

Why do multi-cell batteries need a BMS?

Cell Balancing Especially in multi-cell packs, small differences in cell voltages can lead to imbalance over time. The BMS actively balances the cells during charging to maintain uniform performance and prolong the battery’s life.