Energy store

An energy store with a housing, which surrounds a storage medium having latent heat in the case of a phase transition, which storage medium is provided during operation as intended for solidification into a solid phase and for melting into a liquid phase,

• with a first storage region in the interior of the housing, which is provided at least temporarily for solid phase of the storage medium and in which an extraction heat exchanger is arranged, which is provided for the extraction of heat from the storage medium, wherein the first storage region has a longitudinal extension which is oriented in the intended state of use as a vertical axis, with a second storage medium in the interior of the housing, which is provided for liquid phase of the storage medium, if solid phase is present in the first storage region, wherein the second storage region is provided at least in regions as a shell around the first storage region, wherein at least one part of a regeneration apparatus is arranged in the second storage region, which regeneration apparatus is provided for the supply of heat into the storage medium,
• wherein
• the regeneration apparatus has at least one first and at least one second admission device for the liquid phase and at least one of the admission devices is arranged in the second storage region, wherein one of the admission devices is provided for the introduction of liquid phase into the housing and the other of the admission devices is provided for guiding liquid phase out of the housing, wherein the first and/or the second admission device has an admission portion with admission openings, which are opened toward the interior of the housing, for the liquid phase, wherein the admission portion is arranged with its longitudinal extension at least in regions about the vertical axis.