Electric Charging Particle Heater for Thermal Energy Storage

Zhiwen Ma (Inventor), Jeffrey Gifford (Inventor), Patrick Davenport (Inventor), Dening Jia (Inventor), Jason Schirck (Inventor), Aaron Morris (Inventor)

Research output: Patent


The disclosure relates to particle heaters for heating solid particles to store electrical energy as thermal energy. Thermal energy storage directly converts off-peak electricity into heat for thermal energy storage, which may be converted back to electricity, for example during peak-hour power generation. The particle heater is an integral part of an electro-thermal energy storage system, as it enables the conversion of electrical energy into thermal energy. As described herein, particle heater designs are described that provide efficient heating of solid particles in an efficient and compact configuration to achieve high energy density and low cost.
Original languageAmerican English
Patent number11,631,992 B2
Filing date18/04/23
StatePublished - 2023

NREL Publication Number

  • NREL/PT-5700-86053


  • cross-sectional shape
  • electrical energy
  • plurality of solid particles
  • thermal energy


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