NOVELTY - The accumulator comprises housing, voltage-generating cells (1) arranged in the housing, a cooling-/heating device, and heat-conducting devices (3) arranged between the cells and thermally coupled or connected with the cooling-/heating device, where a section of the housing is formed as cooling-/heating device. The heat-conducting devices are beveled in the area of the cooling-/heating device, vertically overtop the cells in the area of the beveling, and are adhered with one cell. The accumulator has a pressing plate, which is provided for pressing the cells and the heat-conducting devices.    USE - Accumulator for electric motor vehicles in the automotive industry.    ADVANTAGE - The accumulator is easy to use, simple and light-weight.    DETAILED DESCRIPTION - The accumulator comprises housing, voltage-generating cells (1) arranged in the housing, a cooling-/heating device, and heat-conducting devices (3) arranged between the cells and thermally coupled or connected with the cooling-/heating device, where a section of the housing is formed as cooling-/heating device. The heat-conducting devices are beveled in the area of the cooling-/heating device, vertically overtop the cells in the area of the beveling, and are adhered with one cell. The accumulator has a pressing plate, which is provided for pressing the cells and the heat-conducting devices to each other, and a covering plate, which is provided for placing on the cells and has ribs tapering at one side turned towards the cells. The covering plate tapers at one side turned towards the heat-conducting devices. A thermally and/or electrically insulating layer is provided between the heat-conducting devices and the cooling-/heating device. The heat-conducting devices are inserted into the area of the cooling-/heating device. The cells are thermally coupled or connected with the cooling-/heating device. The heat-conducting devices form the walls of the cells in an area-wise manner. The cooling-/heating device and the heat-conducting device are implemented in one-piece. The heat-conducting devices are heat-conducting sheets, heat-conducting networks, heat-conducting grids or flexible heat-conducting plates. The cooling-/heating device forms a side part of the housing, a lid of the housing and a bottom of the housing.    DESCRIPTION OF DRAWING(S) - The figure shows an oblique view of an unit made of tow accumulator cells and heat-conducting sheet.    Voltage-generating cells (1)    Cell ports (2)    Heat-conducting devices. (3)