Abstract: A cylindrical battery cell, a battery and a method for forming cylindrical battery cell are provided. In the cylindrical battery cell, a copper plate is forged with the cell housing to form a bi-metal plate on the bottom side of the cell housing, and the copper plate is welded with the jellyroll structure. Therefore, joining/welding the cell housing with the jellyroll structure is achieved by using a laser from outside of the cell housing, while risk of corrosion of cell housing is not introduced.

Abstract: A cylindrical battery cell, a battery and a method for forming cylindrical battery cell are provided. In the cylindrical battery cell, a cap component at least includes a terminal, a fixing element and a cap plate, the terminal including a step-shape structure, wherein the step-shape structure includes a substrate portion and a rivet portion, the substrate portion being blocked on a first side of the cap plate, the rivet portion being extended from the substrate portion, the fixing element being connected to an outer side of the rivet portion on a second side of the cap plate. Therefore, an energy gravimetric and volumetric density of the battery cell are increased, and a cell inner resistance and an energy loss are decreased. Furthermore, a manufacturing process is simplified and costs consequently are reduced.

Abstract: A cylindrical battery cell, a battery and a method for forming cylindrical battery cell are provided. In the cylindrical cell, an aluminum terminal of a cap component is welded with an aluminum current collector, a cap plate of the cap component is connected to a copper component; the copper component is at least partly configured on a lateral surface of the jellyroll structure and is isolated from the aluminum current collector. Therefore, the thickness of the cell housing is decreased and an energy gravimetric and volumetric density of the cell is increased. Furthermore, the manufacturing process is simplified and the costs consequently is reduced.

Abstract: A cylindrical battery cell, a battery and a method for forming cylindrical battery cell are provided. In the cylindrical cell, on a bottom side of a cell housing, a copper plate is forged with the cell housing to form a bi-metal plate, and the copper plate is welded with a jellyroll structure; on an upper side of the cell housing, a cap component is configured on the jellyroll structure, and an aluminum terminal of the cap component is welded with the jellyroll structure. Therefore, the manufacturing process can be simplified and the costs consequently can be reduced; furthermore, joining/welding the cell housing with the jellyroll structure is achieved by using a laser from outside of the cell housing, while risk of corrosion of cell housing is not introduced.

Abstract: A cylindrical battery cell, a battery and a method for forming cylindrical battery cell are provided. In the cylindrical cell, an opening is created on a bottom side of the cell housing and a copper plate is forged with the cell housing to form a bi-metal plate on the bottom side of the cell housing, and the copper plate is welded with the jellyroll structure. Therefore, joining/welding the cell housing with the jellyroll structure is achieved by using a laser from outside of the cell housing, while risk of corrosion of cell housing is not introduced.

Abstract: A cylindrical battery cell, a battery and a method for forming cylindrical battery cell are provided. In the cylindrical cell, an aluminum terminal of a cap component is welded with an aluminum current collector, a copper terminal of the cap component is welded with a first copper current collector which is connected to a copper component; the copper component is at least partly configured on a lateral surface of the jellyroll structure and is isolated from the aluminum current collector. Therefore, the thickness of the cell housing is decreased and an energy gravimetric and volumetric density of the cell is increased.

Abstract: A cylindrical battery cell, a battery and a method for preparing a cylindrical battery cell are provided. The cylindrical battery cell includes a cylindrical can; a jellyroll structure which is arranged inside the cylindrical can; a cathode disk which is arranged on a first side of the cylindrical can in an axial direction; an anode ring which is arranged on the first side of the cylindrical can in the axial direction; and an insulation element which is arranged between the cathode disk and the anode ring. Therefore, the current path in the cylindrical battery cell is shortened, and additional heat-loss and electrical resistance are decreased, furthermore, the wall thickness of the cylindrical can does not need to be increased, which will improve filling ratio and efficiency of the cylindrical battery cell.

Abstract: An energy storage system for storing electrical energy is provided. The energy storage system includes one or more energy storage cells, one or more supports and one or more protective films that are interposed between the one or more energy storage cells and the one or more supports. A motor vehicle having such an energy storage system is also provided.

Abstract: A vehicle includes a high-voltage battery which has a housing and at least one battery module arranged in the housing that has multiple battery cells which are electrically connected together via a cell contacting system. Each of the battery cells has a battery cell housing with an emergency degassing opening which opens at a specified cell inner pressure and through which hot or burning gas can be leaked out of the interior of the battery cell housing into the housing of the high-voltage battery in the event of a disruption or damage to individual battery cells. The emergency degassing openings face the cell contacting system and/or a wall of the housing of the high-voltage battery. The cell contacting system and/or the wall of the housing of the high-voltage battery is/are provided with a heat protection layer, at least in the regions in which the emergency degassing openings are arranged.

Abstract: A detection device detects a mechanical deformation of a high-voltage accumulator of a motor vehicle, and includes: a sensor element, which senses an electrical measurement variable, wherein the sensor element is substantially flat and is attached at least partially to a first component of the high-voltage accumulator; and an evaluation device for analyzing the electrical measurement variable between the sensor element and a second component of the high-voltage accumulator and for outputting a corresponding warning on the basis of the electrical measurement variable, wherein at least one region of the surface of the second component is electrically conductive.

Abstract: An energy storage device having a plurality of cells for storing electrical energy, and a plurality of cooling plates, which are arranged between the cells, wherein insulation sides of the cooling plates are thermally insulated to inhibit thermal propagation. Also disclosed are a motor vehicle having such an energy storage device and a cooling plate assembly.

Abstract: An energy storage device for a motor vehicle includes a plurality of round cells for electrochemical storage of energy and multiple retaining frames for retaining the round cells. The round cells are secured to opposing retaining frames by their ends. Cell connectors are provided on the retaining frames, which electrically contact the round cells arranged between the retaining frames from the outer sides.

Abstract: A vehicle has a high-voltage accumulator which has a high-voltage accumulator housing. At least one accumulator cell is arranged in the high-voltage accumulator housing and has an emergency degassing opening that is closed in a gas-tight manner in a normal state of the accumulator cell and opens when a specified internal pressure in the interior of the accumulator cell is exceeded so that a hot or burning gas can leak out of the accumulator cell into the high-voltage accumulator housing. Granulate which expands when heated by incident hot or burning gas is provided in sub-regions of the high-voltage accumulator. The sub-regions are arranged in the region of the emergency degassing opening of the at least one accumulator cell.

Abstract: A vehicle includes a high-voltage battery which has a housing and at least one battery module arranged in the housing that has multiple battery cells which are electrically connected together via a cell contacting system. Each of the battery cells has a battery cell housing with an emergency degassing opening which opens at a specified cell inner pressure and through which hot or burning gas can be leaked out of the interior of the battery cell housing into the housing of the high-voltage battery in the event of a disruption or damage to individual battery cells. The emergency degassing openings face the cell contacting system and/or a wall of the housing of the high-voltage battery, wherein the cell contacting system and/or the wall of the housing of the high-voltage battery is/are provided with a heat protection layer, in particular a heat protection coating, at least in the regions in which the emergency degassing openings are arranged.

Abstract: A battery management system for a high-voltage battery of a motor vehicle monitors battery cells of the high-voltage battery. The battery management system can be arranged in a battery housing of the high-voltage battery and has an electronic circuit which is arranged on a circuit carrier and has a processor and a communication interface for communication with at least one vehicle-side unit external to the high-voltage battery. The electronic circuit has at least one pressure sensor, which is designed to detect pressure signals in the battery housing and transmit same to the processor. The processor is designed to detect, on the basis of the transmitted pressure signals, a thermal runaway of at least one battery cell of the high-voltage battery, to generate a signal in the event that a thermal runaway is detected, and to provide the signal of the communication interface for transmission to the unit.

Abstract: A detection device detects a mechanical deformation of a high-voltage accumulator of a motor vehicle, and includes: a sensor element, which senses an electrical measurement variable, wherein the sensor element is substantially flat and is attached at least partially to a first component of the high-voltage accumulator; and an evaluation device for analyzing the electrical measurement variable between the sensor element and a second component of the high-voltage accumulator and for outputting a corresponding warning on the basis of the electrical measurement variable, wherein at least one region of the surface of the second component is electrically conductive.