Storage cell for an electrical energy store having cell-internal heating, and battery for a motor vehicle

A cell for electrochemically storing electrical energy, the cell comprising:

• a first subcell and a second subcell which are each designed for electrochemically storing electrical energy;
• and
• a first electrolyte-stable insulating body for thermally insulating the first subcell and the second subcell from each other, said body being arranged in an interspace between the first and second subcells that is confined by a side face of the first subcell and a side face of the second subcell,
• wherein the first insulating body includes a first thermally insulating material having a thermal conductivity of at most 1 W/(m·K) and includes a first heating structure which is designed to heat the first subcell and the second subcell,
• wherein the first insulating body is electrically insulated both from the first subcell and from the second subcell,
• wherein the first subcell and the second subcell each comprise:
• a first electrode, a second electrode, having a higher electrical potential than the first electrode, and a separator arranged between the two electrodes;
• wherein the first insulating body is surrounded on all sides, with the exception of one or more electrical terminals connected to the first heating structure, by an electrolyte-stable foil;
• wherein the electrolyte-stable foil electrically insulates at a same time the first insulating body from the first subcell and from the second subcell;
• and
• wherein the first subcell, the second subcell, and the part of the first insulating body that is arranged in the interspace between the first and second subcells and is surrounded by the electrolyte-stable foil are immersed in a liquid electrolyte.