The invention relates to an
energy storage element, in particular to a
heat energy storage element which makes use of
electric heating to store energy for a
solid. The
heat energy storage element comprises a shell, wherein a heating
pipe is arranged in the shell, the two ends of the heating
pipe are fixed on end covers at the two ends of the shell, the middle parts of the end covers at the two ends of the shell are provided with
ceramic insulating stools, the centers of the
ceramic insulating stools are provided with electrodes which are connected with the heating
pipe, a
ceramic bracket is arranged in the shell and is sleeved on the heating pipe, and a
solid heat storage body is arranged in a hollow cavity formed by the shell, the ceramic bracket and the heating pipe. The
heat energy storage element has the advantages that the volume of the
energy storage element can be adjusted according to the capacity of the
stored energy, or a plurality of
energy storage elements are overlapped; and the
maintainability of a single energy storage element is good, the group number of the heat storage capacity can be adjusted at random, and the
solid heat storage body can improve the
heating temperature to change more
electric energy into heat energy to be stored.