Key technologies and current applications of high-temperature Carnot batteries
With the rapid development of renewable energy,the demand for grid-scale energy storage solutions is increasing to address the challenges posed by intermittent and variable power generation.As an integration of various mature electrothermal conversion and storage technologies,Carnot battery is gaining increasing attentions due to its scalability and independence from geographical constraints.The fundamental principles,key technologies,application prospects and current research status of Carnot battery are reviewed.The definition of high-temperature Carnot battery technology and the operational characteristics and technical challenges of related key equipment such as compressors and expanders are discussed.Additionally,practical application cases and technological prospects of Carnot battery systems based on electric heating and bidirectional cycles(such as Brayton and Rankine cycles)are analyzed,providing a reference for future research and technological development.
energy storage technologyCarnot batteryhigh-temperature technologyheat pumpRankine cycle
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