Abstract: A method for producing an electrochemical energy storage cell is provided. A current conductor, which is configured for electrically connecting an electrode stack to a cell terminal and has a contact arm, is positioned relative to the electrode stack such that an edge of the contact arm abuts a first lateral surface of a conductor arrangement that projects out of the electrode stack. The conductor arrangement is bent around the edge of the contact arm such that the first lateral surface of the conductor arrangement rests at least in part on a first contact arm lateral surface. The contact arm is supported on a second contact arm lateral surface opposite the first contact arm lateral surface. A contact pressure is exerted on the conductor arrangement resting at least in part on the first contact arm lateral surface, and the conductor arrangement is connected to the current conductor.

Abstract: A battery cell has a plurality of electrode units in a common battery cell housing. Each of the electrode units includes a protective film having an inner layer and an outer layer, where the inner layer is arranged on the electrode unit and the outer layer is arranged on the inner layer. The outer layer has a higher melting point than the inner layer.

Abstract: A method for producing a cell casing for a battery cell having an integrated cell heater includes applying a cell heater to a first side of a first metallic layer, and, after the applying, folding a composite stack comprising at least the first metallic layer and the cell heater, such that a second side of the first metallic layer forms an inside of the cell casing. A battery has a plurality of battery cells which each have a cell casing of this kind, where the second metal layers of the cell casings are electrically interconnected. An electrically operated vehicle has at least one battery including at least one battery cell which comprises a cell casing of this kind and/or a battery of this kind.

Abstract: Described is a battery cell (20) comprising at least one electrode unit (10), and a grating (13) having a plurality of grating webs (15) being arranged in the battery cell (20). The grating (13) is suitable to at least partly reduce the size of any particles produced when the electrode unit (10) is destroyed.

Abstract: A charging device for charging the electrochemical energy accumulator has a first circuit which is or can be coupled electrically to the electrochemical energy accumulator. A heating device for heating the electrochemical energy accumulator has a second circuit, separate from the first circuit, having an induction heating element which can be heated inductively by an external magnetic alternating field and which is or can be coupled thermally to the electrochemical energy accumulator.

Abstract: A housing, in particular a battery housing, includes a wall, wherein the wall is formed, at least is some areas, from a multi-layered material. The wall encompasses an arrangement area which is formed by bending the material.

Abstract: Vehicles and methods for cooling a cabin using a cold roof of the vehicle are provided. The vehicle includes a roof, a cabin, and an insulation layer disposed between the roof and the cabin. The vehicle also includes a passage that fluidly couples the roof with the cabin. The passage is switchable between an open mode and a closed mode. The passage is switched between the open mode and the closed mode depending on a relationship between a roof temperature, a cabin temperature, and/or a threshold temperature. The passage may be formed through the insulation layer or extend outside of the insulation layer fluidly coupling the roof with the cabin.

Abstract: A cover assembly for a cell housing of a prismatic battery cell for a high-voltage battery includes two cell terminals for electrically connecting to a respective cell-external connection and to a respective electrode of a galvanic element of the battery cell, and a cover plate for covering the cell housing having two through-openings for the cell terminals. At least one of the cell terminals is overmoulded with an electrically insulating plastic for retaining same on the cover plate, and additional electrical connection contacts for a cell-internal heating device for heating the galvanic element are guided through the through-opening for the at least one cell terminal, the additional electrical connection contacts being overmoulded with the electrically insulating plastic for electrically insulating same from the cell terminal and the cover plate.

Abstract: A method for producing an electrochemical energy storage cell is provided. A current conductor, which is configured for electrically connecting an electrode stack to a cell terminal and has a contact arm, is positioned relative to the electrode stack such that an edge of the contact arm abuts a first lateral surface of a conductor arrangement that projects out of the electrode stack. The conductor arrangement is bent around the edge of the contact arm such that the first lateral surface of the conductor arrangement rests at least in part on a first contact arm lateral surface. The contact arm is supported on a second contact arm lateral surface opposite the first contact arm lateral surface. A contact pressure is exerted on the conductor arrangement resting at least in part on the first contact arm lateral surface, and the conductor arrangement is connected to the current conductor.

Abstract: A test device for an electrochemical cell is arranged inside the electrochemical cell in such a way that it is in electrical contact with two current-carrying electrodes of the electrochemical cell. The test device includes a switching device having at least one cathode and one anode partial electrode which are adjacently arranged, but with a space thereinbetween. In an initial state, the switching device is opened such that electrical current cannot flow between the partial electrodes. The switching device is closed in a short-circuit state by bridging the space between the partial electrodes such that an electrical current can flow between the current-carrying electrodes of the electrochemical cell and through the partial electrodes.

Abstract: A composite electrode prepared from silicon-graphene material and conductive polymer binder poly (1-pyrenemethyl methacrylate-co-methacrylic acid) for use in lithium-ion batteries.

Abstract: A test device for an electrochemical cell is arranged inside the electrochemical cell in such a way that it is in electrical contact with two current-carrying electrodes of the electrochemical cell. The test device includes a switching device having at least one cathode and one anode partial electrode which are adjacently arranged, but with a space thereinbetween. In an initial state, the switching device is opened such that electrical current cannot flow between the partial electrodes. The switching device is closed in a short-circuit state by bridging the space between the partial electrodes such that an electrical current can flow between the current-carrying electrodes of the electrochemical cell and through the partial electrodes.

Abstract: A lithium-sulfur battery which includes an electrolyte containing lithium-ions, an anode and a cathode containing sulfur. The lithium-sulfur battery also contains a surface layer which is arranged between the anode and the cathode. The lithium-sulfur battery further includes areas on the cathode side which contain polysulfides. The surface layer of the lithium-sulfur battery contains at least one graphene layer which is permeable to lithium ions and impermeable to polysulfides.

Abstract: A charging device for charging the electrochemical energy accumulator has a first circuit which is or can be coupled electrically to the electrochemical energy accumulator. A heating device for heating the electrochemical energy accumulator has a second circuit, separate from the first circuit, having an induction heating element which can be heated inductively by an external magnetic alternating field and which is or can be coupled thermally to the electrochemical energy accumulator.

Abstract: Vehicles and methods for cooling a cabin using a cold roof of the vehicle are provided. The vehicle includes a roof, a cabin, and an insulation layer disposed between the roof and the cabin. The vehicle also includes a passage that fluidly couples the roof with the cabin. The passage is switchable between an open mode and a closed mode. The passage is switched between the open mode and the closed mode depending on a relationship between a roof temperature, a cabin temperature, and/or a threshold temperature. The passage may be formed through the insulation layer or extend outside of the insulation layer fluidly coupling the roof with the cabin.

Abstract: A battery module having a controllable external heat sink and methods of operating the battery module are provided. According to an aspect of the invention, the battery module includes a battery cell, an external circuit connected to the battery cell, and a controller that controls the external circuit. The external circuit includes a first switch and a heat sink. If an internal short circuit within the battery cell is detected, the controller closes the first switch in order to generate heat in the heat sink.

Abstract: A composite electrode prepared from silicon-graphene material and conductive polymer binder poly (1-pyrenebutyl methacrylate-co-methacrylic acid) for use in lithium-ion batteries.

Abstract: A separator/current collector unit for a galvanic cell, in particular for a lithium-ion cell, is provided. The separator/current collector unit has a separator and a number N?1 of electrically conductive current collectors, each of which is arranged on the surface of the separator and is connected to same in order to form a unit, in the process forming a respective boundary surface together with the surface of the separator. Each of the current collectors has a porous material for receiving an electrolyte such that the separator/current collector unit conducts ions through the at least one boundary surface when the porous material has received electrolytes. A galvanic cell is also provided having a separator/current collector unit. Also, a battery is provided made of multiple galvanic cells.

Abstract: A composite electrode prepared from silicon-graphene material and conductive polymer binder poly (1-pyrenebutyl methacrylate-co-methacrylic acid) for use in lithium-ion batteries.

Abstract: A composite electrode prepared from porous silicon and conductive polymer binders for use in lithium-ion batteries.