Abstract: A battery system, in particular for an aircraft, having a housing, which is sealed gas-tight, and a cell block, which is formed from a plurality of battery cells connected electrically and mechanically by contact plates. The housing can be connected to a vacuum pump in order to generate vacuum within the housing and a vacuum prevails within the housing, wherein at least one housing side wall of the housing is flexible enough that the housing side wall is tensioned together with the cell block by the vacuum acting within the housing. A vehicle, in particular an aircraft, may be electrified, at least in part, by such a battery system.

Abstract: The invention relates to a power unit, in particular for a hybrid vehicle, including a reciprocating-piston engine and at least one generator drivingly connected to the engine, wherein the engine has at least two pistons guided in at least two cylinders in a tandem arrangement, and two crankshafts, which are connected to the pistons by connection rods that run in opposite directions, and are mechanically coupled in the same phase. The engine includes a hub-hub connection with a first connection joining a first hub to a second hub such that an angular position between the first hub and the second hub is continuously adjustable on installation. The hub-hub connection also has a second connection in the form of a connection disk configured, dimensioned and arranged with support surfaces, on each of which the first hub and the second hub rest.

Abstract: The invention relates to a power unit, in particular for a hybrid vehicle, comprising a two-cylinder reciprocating piston engine comprising two pistons guided in two cylinders in tandem arrangement, and two counter-rotating crankshafts connected to the pistons by connecting rods, a generator which is rotatable in the same direction as the first crankshaft and in the opposite direction to the second crankshaft, and a balancer shaft which is rotatable in the same direction as the second crankshaft and in the opposite direction to the first crankshaft. The generator is operatively connected directly to the first crankshaft by a first traction mechanism and the balancer shaft is operatively connected directly to the second crankshaft by a second traction mechanism. The balancer shaft and/or the second crankshaft support(s) a flywheel mass element. The invention further relates to a vehicle, in particular a hybrid vehicle, having such a power unit.

Abstract: The invention relates to a generator set, in particular a generator set of a hybrid vehicle, with a two-cylinder piston engine (1), which has a crankshaft housing (10), in which two counter-rotating crankshafts (11, 12) are arranged, which are connected by means of piston rods (13) to pistons (18, 19), which are guided inside two cylinders (21, 22) in a tandem arrangement, wherein at least one crankshaft (11, 12) is drivingly connected to a generator (41, 42), and wherein the piston engine (1) comprises a cylinder head (20), which is connected to the crankshaft housing (10), wherein the piston engine (1) has a lower-mounted camshaft (30), and the cylinder head (20) can be connected to the crankshaft housing (10) in at least two positions, in particular positions rotated through 180° relative to each other. Furthermore, the invention relates to a vehicle with such a generator set.

Abstract: The invention relates to a power unit, in particular for a hybrid vehicle, comprising a reciprocating piston engine and comprising a generator which can be in driving engagement therewith, wherein the reciprocating piston engine has at least two pistons, which are guided in at least two cylinders in tandem arrangement, and two counter-rotating crankshafts, which are connected to the pistons by connecting rods and which are mechanically coupled so as to be in phase, wherein a first generator can be driven by the first crankshaft and a second generator can be driven by the second crankshaft.

Abstract: The invention relates to a battery housing, in particular for an energy accumulator for a hybrid drive, comprising a tubular main body and at least two terminating covers, which are inserted into the main body and each have a cover plate that is offset inwards in the longitudinal direction of the main body and supports housing walls of the main body, wherein the terminating covers are each welded to the main body and all joints of the battery housing are formed without separate connecting elements.

Abstract: The invention relates to a battery system, in particular for a hybrid drive, having a housing, a plurality of battery cells arranged inside the housing and a cooling element, wherein fluid connections and at least one electrical connection are arranged on the housing, said electrical connection being electrically coupled to the battery cells, and wherein the fluid connections comprise at least one coolant inlet and at least one coolant outlet, each of which is fluidically connected to the cooling element. The invention is characterized in that the housing comprises a tubular main body, which is sealed in a fluid-tight manner by a closure cap at each of the opposite end faces thereof, wherein the electrical connection is arranged on a first closure cap and the fluid connections are arranged on a second closure cap. The invention also relates to a motor vehicle having such a battery system.

Abstract: The invention relates to a multi-track passenger motor vehicle, in particular a hybrid vehicle, comprising a generating set, which has at least one generator that can be driven by a reciprocating piston engine, a battery and at least one electric motor. The reciprocating piston engine, the generator and the electric motor, which can be mechanically coupled to at least one driving wheel of the vehicle, are connected in series in order to drive the vehicle. The generating set, consisting of the reciprocating piston engine and the generator, has a depth extending in the longitudinal direction of the vehicle and a width extending transversely to the longitudinal direction of the vehicle, the width being a maximum 750 mm, especially a maximum 700 mm, in particular a maximum 660 mm, in particular a maximum 640 mm, and the depth being a maximum 310 mm, especially a maximum 280 mm, in particular a maximum 260 mm, and in particular a maximum 250 mm.

Abstract: The invention relates to a battery system, in particular for a hybrid drive, comprising a housing and a plurality of battery cells arranged within the housing, said cells being combined to give a cell block, wherein a container having a variable inner volume is arranged between the cell block and at least one housing wall, by means of which container the cell block can be braced relative to the housing, wherein the container is filled with a curable or cured medium.

Abstract: The invention relates to a power unit, in particular for a hybrid vehicle, having a two-cylinder reciprocating piston engine which comprises two pistons guided in two cylinders in a tandem arrangement and two counter-rotating crankshafts connected to the pistons by connecting rods, and having an alternator that can rotate in the opposite direction to the first crankshaft and in the same direction as the second crankshaft. The invention is characterized in that the alternator is in driving engagement with at least the first crankshaft via a traction mechanism and comprises a counterbalance, wherein the first crankshaft is connected via a timing chain or a timing belt to a balancing shaft which carries a further balancing mass. The invention also relates to a vehicle, in particular a hybrid vehicle, having such a power unit.

Abstract: The invention relates to a power unit, in particular for a hybrid vehicle, comprising a reciprocating piston engine and comprising a generator which can be in driving engagement therewith, wherein the reciprocating piston engine has at least two pistons, which are guided in at least two cylinders in tandem arrangement, and two counter-rotating crankshafts, which are connected to the pistons by connecting rods and which are mechanically coupled so as to be in phase, wherein a first generator can be driven by the first crankshaft and a second generator can be driven by the second crankshaft.

Abstract: For a technical object whose temperature is to be controlled, in particular a battery for an electric vehicle drive, there is provided a heat exchanger arrangement, the heat exchanger of which is in the form of a heat-exchanging pouch which has an inflow and outflow duct and which is in heat-conducting contact with internal surfaces of the object whose temperature is to be controlled. The heat-exchanging pouch is produced in a simple manner by means of edge welding of two foil pieces arranged one above the other. The mounting of said heat-exchanging pouch in a narrow gap space of a heat exchanger arrangement, and good heat transfer to adjacent walls, are made possible by means of a pressure pouch which is likewise formed from a foil material and which is filled with a compressible medium.

Abstract: The battery has rod cells, which are arranged next to one another in multiple rows and the end-side electrical contacts of which are respectively electrically connected to one another in parallel and in series by a common contact plate. For effective cooling, a flat heat exchange pocket, through which a heat transfer medium flows, abuts against these contact plates. This heat exchange pocket consists of a multilayered thin film having an electrically insulating outer layer.