Abstract: A method for producing an electrode, in particular a negative electrode of an electrochemical cell, comprising the steps of: pretreatment, in particular cleaning, of a metallic substrate, drying the pretreated metallic substrate and/or an active material, and coating the pretreated metallic substrate with the active material, wherein said pretreatment of the surface of the metallic substrate involves an organic acid.

Abstract: The invention relates to a method for reducing the loss of electrical capacitance of a rechargeable lithium ion battery when charging and discharging, comprising: (i) introducing an esterified aliphatic dicarboxylic acid into the electrolyte contained in the battery, said electrolyte comprising an organic solvent and a conducting salt.

Abstract: Plate-shaped current conductor (12) for a galvanic cell, with a first surface (16) and a second surface (17), which essentially face each other, and are connected with each other via a first side surface (18) and a second side surface (19), characterized in that the plate-shaped current conductor has, in the area of the first and/or second side surface (18,19), a segment, which has a thickness (d), which is reduced in regard to its cross section vis-à-vis the thickness (D) as defined by first and second surface (16, 17) of the current conductor, which segment extends at least substantially over a sealing area (14) of the current conductor.

Abstract: The invention relates to a battery pack (1) for electric vehicles or vehicles with an electric hybrid drive. The battery pack (1) according to the invention comprises a battery housing (2) and battery cells, which are arranged within the battery housing (2), are self-contained and are electrically connected to one another in order to achieve a desired terminal voltage. A plurality of battery cells are in each case arranged at a distance from one another in a fastening frame (6) and in each case form cell modules (4). The cell modules (4) are in each case arranged on fastening elements, which pass through the battery housing (2), the fastening elements, being in the form of spacers between the cell modules (4) and, with the battery housing (2), forming a bearing unit.

Abstract: A lithium-ion battery in a housing includes (a) an anode, (b) a cathode, (c) a separator, (d) an electrolyte including a lithium salt and a non-aqueous solvent, and (e) a non-ionic surfactant.

Abstract: An electrochemical cell has an electrode stack, which is sealed off by a sheath, in particular in a gas-tight and/or liquid-tight manner, and at least one pressure-relief device, in particular in the form of a desired breaking point, wherein the pressure-relief device has a rupture diaphragm, which closes an aperture in the sheath.

Abstract: A single cell for a battery that includes a first housing part and a second housing part, which are electrically isolated from one another by an insulating housing frame. An electrochemically-active material is located in housing frame between housing parts. The first housing part and second housing part are in the form of plates. At least one of the housing parts exhibits a first edge area bent over towards the inside, and first housing part and second housing part are fixed by a form fit to one-piece housing frame.

Abstract: An electrical energy storage cell is provided with: an active part which is equipped and adapted to store electrical energy supplied from the outside and to discharge stored electrical energy to the outside; at least two current conductors which are connected to the active part and are equipped and adapted to supply electric current from the outside to the active part and to discharge electric current from the active part to the outside; and an enclosure, which defines a prismatic basic shape having a substantially cuboid-like outline and encloses the active part in a gas-tight and fluid-tight manner. According to the invention, the enclosure has two flat foil parts and a peripheral seam part connecting the edges of the foil parts, wherein the seam part surrounds the active part in the manner of the frame and has sections of maximum thickness, in which the thickness is uniformly greater than the thickness of the active part.

Abstract: An electrode stack according to the invention comprises at least a cathode, an anode, and a separator with electrolyte. The cathode, the anode, and the separator are each plate-shaped, respectively. The surface area of the separator is at least as large, as the surface area of the cathode and/or of the anode. The plate-shaped elements of the electrode stack are at least partially connected with each other, by fixation means.

Abstract: Conductors of a galvanic cell with an essentially flat housing are accessible from the outside by means of recesses, shaped as window-like openings which are essentially arranged in a plane and in parallel to the flat housing surface of the cell.

Abstract: Method for producing an electrochemical cell (1), wherein the electrochemical cell (1) comprises at least one electrode stack that is received inside a jacket (2), wherein the jacket (2) is formed by at least two jacket parts (3), wherein each jacket part (3) comprises at least one seam surface (5) with which the jacket parts (3) can be brought at least partially in contact, comprising the following method steps: adding a defined amount of auxiliary sealant (9) at least indirectly to a delimited section (8) of the seam surface (5) of at least one jacket part (3); bringing the seam surface (5) of one of the jacket parts (3) in contact with the seam surface (5) of another jacket part (3); subsequently applying heat to the seam surfaces (5).

Abstract: A current collector (1) according to the invention has at least one substantially plate-like and preferably thin-walled core region (2). This core region contains at least one electrically conductive third material. The current collector also has a first surface region (3) comprising at least one first material. The current collector also has a second surface region (4) comprising at least one second material. In this case, the electrical conductivity of the first surface region is lower than that of the second surface region. Furthermore, this first surface region is bounded and/or spatially separated from this second surface region.

Abstract: An electrical energy storage device includes at least one galvanic cell partly surrounded by a cell sheath, at least one heat-conducting device effectively connected to the galvanic cell, the heat-conducting device being suitable for supplying heat energy to the cell and/or conducting heat energy from the cell, a cell holding device enclosing an interior space at least partially with a wall, the interior space being suitable for accommodating each galvanic cell, and the cell sheath being at least partly effectively connected to the wall, at least one first measurement device suitable for acquiring a temperature at a prespecified position of the galvanic cell, and a control device suitable for evaluating a signal of each first measurement device that is present and/or for controlling the heat-conducting devices, heat-conducting apparatus being situated between the cell sheath and at least one of the wall of cell holding device and an additional cell sheath.

Abstract: The invention relates to a battery pack (1) for electric vehicles or vehicles with an electric hybrid drive. The battery pack (1) according to the invention comprises a battery housing (2) and battery cells, which are arranged within the battery housing (2), are self-contained and are electrically connected to one another in order to achieve a desired terminal voltage. A plurality of battery cells are in each case arranged at a distance from one another in a fastening frame (6) and in each case form cell modules (4). The cell modules (4) are in each case arranged on fastening elements, which pass through the battery housing (2), the fastening elements, being in the form of spacers between the cell modules (4) and, with the battery housing (2), forming a bearing unit.

Abstract: Plate-shaped current conductor (12) for a galvanic cell, with a first surface (16) and a second surface (17), which essentially face each other, and are connected with each other via a first side surface (18) and a second side surface (19), characterized in that the plate-shaped current conductor has, in the area of the first and/or second side surface (18, 19), a segment, which has a thickness (d), which is reduced in regard to its cross section vis-à-vis the thickness (D) as defined by first and second surface (16, 17) of the current conductor, which segment extends at least substantially over a sealing area (14) of the current conductor.

Abstract: The device according to the invention for storing electrical energy comprises at least one galvanic cell. The same is at least partially surrounded by a casing. Furthermore, the device comprises a cell holding unit comprising an internal space. The at least one galvanic cell is arranged in the internal space. Furthermore, the cell holding unit comprises a wall, which at least partially delimits said internal space. Therein, the wall of the cell holding unit and/or the at least one galvanic cell comprise at least one hollow space. The at least one hollow space is at least partially filled with a first heat conducting means.

Abstract: An accumulator comprises at least one galvanic cell and a receiving device for supporting the galvanic cell(s) of the accumulator. The receiving device comprises at least one protecting wall for receiving energy by means of elastic and/or plastic deformation. The protecting wall encases the at least one galvanic cell at least partially and has a thickness which is at least partially less than about 1/10 of the characteristic edge length of the at least one galvanic cell. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: Packaging device (10, 10?, 10?) for packaging at least one object (12, 12?, 12?), that is essentially flat, in particular a valuable technical object, such as a lithium-ion cell, comprising: a bottom plate (14) having at least one first side rim (42), which is linear in regard to at least a part thereof, and at least one first cover plate (20) having at least one first side rim (46) which is linear in regard to at least one part thereof, which is hingeably linked to the first side rim (42) of the bottom plate (14) such that the cover plate (20) can be hinged between a closed position in which the cover plate at least partially covers the bottom plate, and an open position in which the cover plate is not opposite to the bottom plate, characterized in that the bottom plate (14) or the at least one cover plate (20) comprises on one side a cushioning layer (16, respectively 22), wherein the cushioned side faces the object (12, 12?, 12?) when said object is in the packaging and the at least one cover plate (20) i