Abstract: A battery includes a first battery module having a housing having at least one first marginal indentation on a housing exterior, and a second battery module having a housing having at least one second marginal indentation on a housing exterior, wherein the at least one connecting element holding the battery modules together includes a first end piece and a second end piece and a middle piece connecting the two end pieces, the first end piece is in the form of a holding means and form-fittingly engages in the first marginal indentation of the first battery module, the second end piece is in the form of a holding means and form-fittingly engages in the second marginal indentation of the second battery module, and introduced into the middle piece of the connecting element is an expansion means that expands the connecting element or the middle piece connecting the two end pieces.

Abstract: A tool accessory packaging for at least one tool accessory, in particular a drill bit, includes a packaging base body which forms a receiving pocket, in particular a folded pocket, for receiving the at least one tool accessory and which is intended for receiving tool accessories with different geometries in the receiving pocket. The receiving pocket adapts to a geometry of the at least one tool accessory, at least in sections, due to its material-specific restoring force when the at least one tool accessory is arranged in the receiving pocket and fixes the at least one tool accessory in a receiving region, in particular in a non-slip manner.

Abstract: An optical assembly has an optical element for influencing the beam path in a projection exposure apparatus and an actuator device for deforming the optical element. The actuator device has at least one photostrictive component and at least one light source. The photostrictive component is mechanically coupled to the optical element for the transmission of a tensile and/or compressive force in order to deform the optical element. The light source is configured for targeted illumination of the photostrictive component in order to induce the tensile and/or compressive force in the photostrictive component.

Abstract: A tool accessory packaging for at least one tool accessory, in particular a drill bit, includes a packaging base body which forms a receiving pocket, in particular a folded pocket, for receiving the tool accessory and which is intended for receiving tool accessories with different geometries in the receiving pocket. The receiving pocket adapts to a geometry of the tool accessory, at least in sections, due to its material-specific restoring force when the tool accessory is arranged in the receiving pocket and fixes the tool accessory in a receiving region, in particular in a non-slip manner.

Abstract: An optical assembly has an optical element for influencing the beam path in a projection exposure apparatus and an actuator device for deforming the optical element. The actuator device has at least one photostrictive component and at least one light source. The photostrictive component is mechanically coupled to the optical element for the transmission of a tensile and/or compressive force in order to deform the optical element. The light source is configured for targeted illumination of the photostrictive component in order to induce the tensile and/or compressive force in the photostrictive component.

Abstract: A battery includes a first battery module having a housing having at least one first marginal indentation on a housing exterior, and a second battery module having a housing having at least one second marginal indentation on a housing exterior, wherein the at least one connecting element holding the battery modules together includes a first end piece and a second end piece and a middle piece connecting the two end pieces, the first end piece is in the form of a holding means and form-fittingly engages in the first marginal indentation of the first battery module, the second end piece is in the form of a holding means and form-fittingly engages in the second marginal indentation of the second battery module, and introduced into the middle piece of the connecting element is an expansion means that expands the connecting element or the middle piece connecting the two end pieces.

Abstract: A battery module with air cooling capability that includes at least two battery blocks; the battery blocks each include a plurality of cylindrical round cells arranged in corresponding receptacles of a cell holder, wherein longitudinal axes of the cylindrical round cells lie parallel to one another; air passage openings are provided in the cell holders, through which air can flow through the battery blocks in parallel to the longitudinal axes of the round cells; the battery blocks are stacked on one another with spacing so that a stack intermediate space results between adjacent battery blocks in the stack; a housing, including the stack made up of the battery blocks, wherein the stack is spaced apart from walls of the housing so that two terminal free spaces result between terminal battery blocks of the stack and the walls; the housing has at least one air inlet and at least one air outlet; a fan is assigned to the battery module to generate an airflow between the air inlet and the air outlet, and guiding me