Monitoring battery pack current and cell or module voltages is the road to electrical protection. Battery pack protection management has two key arenas: electrical protection, which implies not allowing the battery to be damaged via usage outside its SOA, and thermal protection, which involves passive and/or active temperature control to maintain or bring the pack into its SOA.Įlectrical Management Protection: Current We’ll discuss how these two features work here. There are many BMS design features, with battery pack protection management and capacity management being two essential features.
Application of the battery and any safety, lifespan, and warranty concerns.
The costs, complexity, and size of the battery pack.The technology design scope and implemented features generally correlate with: The BMS certainly has a challenging job description, and its overall complexity and oversight outreach may span many disciplines such as electrical, digital, control, thermal, and hydraulic.īattery management systems do not have a fixed or unique set of criteria that must be adopted. While they perform superbly, they can be rather unforgiving if operated outside a generally tight safe operating area (SOA), with outcomes ranging from compromising the battery performance to outright dangerous consequences. Lithium-ion rechargeable cells have the highest energy density and are the standard choice for battery packs for many consumer products, from laptops to electric vehicles. Here, the term “battery” implies the entire pack however, the monitoring and control functions are specifically applied to individual cells, or groups of cells called modules in the overall battery pack assembly. Reporting operational status to external devices.Continually optimizing battery performance.Estimating the battery’s operational state.The oversight that a BMS provides usually includes:
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