Considerations for Selecting a Lithium-ion Battery System for UPSs and Energy Storage Systems White Paper
●As UPS systems transition from VRLA to lithium-ion batteries, it’s important to know the right evaluation metrics to ensure the optimal solution is selected for a particular application. There are two popular and vastly different characteristics of lithium ion (li -ion) batteries with many supporting cell designs and chemistries – energy batter-ies and power batteries – and although UPSs use power batteries, we generally hear in the popular press about metrics that relate to energy batteries. Most battery news focuses on energy systems such as new introductions of electric vehicles with ever increasing range, energy storage systems with longer runtimes, and the de-creasing energy battery system costs. This spotlight on energy batteries is creating confusion in the marketplace regarding price and performance of power battery systems.
Power battery systems, although not in the news nearly as much, have several applications – UPSs systems are one, but they also can be found in hybrid electric and micro-hybrid electric vehicles (otherwise known as idle reduction), cordless power tools, automotive starter batteries and battery jump packs.
UPS battery systems are typically designed for high power, short duration events, since the traditional application of a UPS is to provide backup power to the load in the event of a utility power outage. But there are extended run and emerging UPS applications that are enabled by the improved performance of li-ion energy batteries. These energy-targeted UPS applications include peak-load shifting, demand response, generator substitution, peak shaving and frequency regulation. UPS applications use various types of power and energy batteries and the key is to use an optimized battery system that is matched to the application. Optimizing batteries is very important for all battery powered systems including small portable electronics and large grid scale energy storage.
In contrast to lead-acid batteries, li-ion batteries are significantly more complex. Therefore, the purpose of this paper is not to teach you how to specify and de-sign a battery solution, but rather to explain the key variables that drive battery decisions. Having this knowledge prepares you for vendor discussions, especially when you’re presented with trade-offs.
●As UPS and energy storage systems continue the transition from VRLA to lithium-ion batteries, decision makers need to clearly understand the correct evaluation metrics to ensure that an optimized battery system is selected for a given application. The complexity and numerous types of lithium-ion batteries can make this task challenging, but the results of making informed battery decisions are extremely important.
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White Paper |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2020/3/28 |
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Version 1 |
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837 KB |
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