Abstract: A protective unit is provided for a battery module of a high-voltage battery of a motor vehicle for electrically insulating cell housings of prismatic battery cells of the battery module, which battery cells are stacked to form a cell stack. A cell-contacting system of the battery module interconnects the battery cells by electrically connecting cell terminals of the battery cells. The protective unit includes a pre-formed intermediate layer made of an electrically insulating material, which intermediate layer can be applied to a side of the cell stack having the cell terminals and can be arranged between the side of the cell stack having the cell terminals and the cell-contacting system. The intermediate layer has a number of cut-outs which corresponds to the number of cells terminals. The cut-outs are provided for the feeding through of the cell terminals when the intermediate layer is applied to the cell stack.

Abstract: A cell assembly for an electrochemical energy storage device has: two cells for electrochemically storing electric energy; and a first insulating body for thermally insulating the two cells from each other. The insulating body is arranged between the cells in an intermediate space delimited by a respective lateral surface of each of the two cells and is configured to absorb pressure exerted by the lateral surfaces of the two cells on lateral surfaces of the first insulation body, where compression occurs along a compression direction. The insulating body includes a first thermally insulating and compressible fiber material and has a rigidity as a function of compression, where a value curve of the rigidity has a first compression value section and a second compression value section adjoining the first compression value section. A cell module has a cell assembly and a high-voltage storage device has a cell module as described herein.

Abstract: An energy store for storing electrical energy includes storage cells in R rows and Q columns. The energy store is divided into Q/N sub-stores which each have R rows and N columns. Further, the energy store includes Q/N sub-contacting systems for the corresponding Q/N sub-stores. The sub-contacting system for a sub-store is configured in each case to interconnect the storage cells of the sub-store in question in accordance with an MP arrangement, in which the storage cells of sub-groups, each with M storage cells, are interconnected in parallel to one another. The energy store further includes Q/N?1 connection elements, via which the Q/N sub-stores are interconnected in series.

Abstract: An energy storage module having a plurality of electrochemical round cells, which are electrically interconnected in series and/or in parallel, wherein the round cells are arranged adjacent to one another in layers, and at least two layers on top of one another are provided, and two opposite support walls, which retain the two longitudinal ends of the round cells, wherein the support walls have projections, on which the longitudinal ends of the round cells rest, and wherein the projections vary in length along the longitudinal direction of the round cells from layer to layer.

Abstract: A protective unit is provided for a battery module of a high-voltage battery of a motor vehicle for electrically insulating cell housings of prismatic battery cells of the battery module, which battery cells are stacked to form a cell stack. A cell-contacting system of the battery module interconnects the battery cells by electrically connecting cell terminals of the battery cells. The protective unit includes a pre-formed intermediate layer made of an electrically insulating material, which intermediate layer can be applied to a side of the cell stack having the cell terminals and can be arranged between the side of the cell stack having the cell terminals and the cell-contacting system. The intermediate layer has a number of cut-outs which corresponds to the number of cells terminals. The cut-outs are provided for the feeding through of the cell terminals when the intermediate layer is applied to the cell stack.