Abstract: The present invention relates to a method for producing a precursor material (10) for an electrochemical cell. The method comprises the steps of adding a matrix material (18) to a fluidized bed (40), and adding a carrier medium (48) and a de-agglomerated carbon nanotube material (22) to the fluidized bed (40), so that the carbon nanotube material (22) and the carrier medium (48) is applied to the matrix material (18) and the latter is granulated therewith, wherein the carbon nanotube material (22) has been suspended and de-agglomerated prior to addition to the carrier medium (48), and/or the carbon nanotube material (22) present in de-agglomerated form in the fluidized bed (40) dissolving with the carrier medium (48) in the fluidized bed (40).

Abstract: A process for producing a composite material comprising at least one particulate material and at least one polymeric binder, wherein the at least one particulate material and the at least one polymeric binder are mixed with one another and mechanically processed in the presence of at least one process auxiliary which reduces the mechanical and/or chemical interaction between the surfaces of the at least one particulate material and of the at least one polymeric binder, essentially dispensing with the use of solvents, characterized in that the weight ratio of process auxiliary to polymeric binder is within a range from 3:10 to 0.1:20.

Abstract: The present invention relates to a method for producing a precursor material (10) for an electrochemical cell. The method comprises the steps of adding a matrix material (18) to a fluidized bed (40), and adding a carrier medium (48) and a de-agglomerated carbon nanotube material (22) to the fluidized bed (40), so that the carbon nanotube material (22) and the carrier medium (48) is applied to the matrix material (18) and the latter is granulated therewith, wherein the carbon nanotube material (22) has been suspended and de-agglomerated prior to addition to the carrier medium (48), and/or the carbon nanotube material (22) present in de-agglomerated form in the fluidized bed (40) dissolving with the carrier medium (48) in the fluidized bed (40).

Abstract: The invention relates to a method for producing an electrode (E) for an electrochemical cell, in particular for a lithium cell. In order to produce a homogeneous mixture allowing the time-saving, cost-effective production, for example by dry coating, of an electrode (E) with improved properties and/or with a layer thickness significantly greater than 100 ?m, for example for vehicle batteries, in particular for electric and/or hybrid vehicles, in said method at least one binder (B) and at least one particulate fibrillation auxiliary agent (F) are mixed in a mixing process with a high shear load, the at least one binder (B) being fibrillated (fB), and at least one electrode component (E1) is then added to the at least one fibrillated binder (B) in a mixing process with a low shear load. The invention also relates to an electrode (E) produced in this manner and to an electrochemical cell equipped with an electrode (E) of this type.

Abstract: The present invention relates to a method for producing a polymer composite material, particularly an electrode (10) and/or a separator, for an electrochemical cell, particularly for a battery cell and/or fuel cell and/or electrolysis cell. In order to improve the production of polymer composite materials, in the form of electrodes and/or separators, for example, particularly for electrochemical cells, and the properties and/or functionality thereof, such as the specific energy density and/or electrical conductivity thereof, at least one swellable polymer (1) is mixed with a solvent quantity of at least one solvent (2), which can be absorbed completely in the at least one swellable polymer (1) by swelling the at least one swellable polymer (1) and which swells the at least one swellable polymer (1), and with at least one particulate material (3, 4).

Abstract: An electrical energy storage device includes prismatic energy storage cells arranged adjacent to one another such that interfaces of adjacent storage cells run at a distance from one another such that the interfaces of the adjacent storage cells form an intermediate space. A respective first layer is arranged between the interfaces of adjacent storage cells, the first layer abutting one of the two interfaces of the adjacent storage cells under pressure. Either the respective first layer also abuts the second of the two interfaces of the adjacent storage cells under pressure, or a second layer is arranged between the interfaces of adjacent storage cells, the second layer abutting the second of the two interfaces of the adjacent storage cells under pressure. A heat-conducting device is arranged in or between the first layer and the second layer is conducted out of the intermediate space between the adjacent storage cells.

Abstract: The present invention relates to a battery cell (10), in particular a lithium cell, which comprises an anode layer (1), a cathode layer (2) and a separator layer (3) arranged between the anode layer (1) and the cathode layer (2). In order to reduce the thickness of the layer structure of the battery cell (10) and to improve its volumetric and/or gravimetric energy density, in particular in a cost-saving and/or weight-saving manner, the anode layer (1) has at least one anode layer protrusion (1a) projecting beyond the separator layer (3) and/or the cathode layer (2) has at least one cathode layer protrusion (2a) projecting beyond the separator layer (3), wherein the at least one anode layer protrusion (1a) and/or the at least one cathode layer protrusion (2a) serve(s) as a current conductor and is/are electrically contacted on the separator side and/or on the front side. The invention further relates to a battery of this kind and to a method for producing a battery cell (10) and battery of this kind.

Abstract: The invention relates to a method for producing an electrode (E) for an electrochemical cell, in particular for a lithium cell. In order to produce a homogeneous mixture allowing the time-saving, cost-effective production, for example by dry coating, of an electrode (E) with improved properties and/or with a layer thickness significantly greater than 100 ?m, for example for vehicle batteries, in particular for electric and/or hybrid vehicles, in said method at least one binder (B) and at least one particulate fibrillation auxiliary agent (F) are mixed in a mixing process with a high shear load, the at least one binder (B) being fibrillated (fB), and at least one electrode component (E1) is then added to the at least one fibrillated binder (B) in a mixing process with a low shear load. The invention also relates to an electrode (E) produced in this manner and to an electrochemical cell equipped with an electrode (E) of this type.

Abstract: A process for producing a composite material comprising at least one particulate material and at least one polymeric binder, wherein the at least one particulate material and the at least one polymeric binder are mixed with one another and mechanically processed in the presence of at least one process auxiliary which reduces the mechanical and/or chemical interaction between the surfaces of the at least one particulate material and of the at least one polymeric binder, essentially dispensing with the use of solvents, characterized in that the weight ratio of process auxiliary to polymeric binder is within a range from 3:10 to 0.1:20.

Abstract: An electrical energy storage device includes prismatic energy storage cells arranged adjacent to one another such that interfaces of adjacent storage cells run at a distance from one another such that the interfaces of the adjacent storage cells form an intermediate space. A respective first layer is arranged between the interfaces of adjacent storage cells, the first layer abutting one of the two interfaces of the adjacent storage cells under pressure. Either the respective first layer also abuts the second of the two interfaces of the adjacent storage cells under pressure, or a second layer is arranged between the interfaces of adjacent storage cells, the second layer abutting the second of the two interfaces of the adjacent storage cells under pressure. A heat-conducting device is arranged in or between the first layer and the second layer is conducted out of the intermediate space between the adjacent storage cells.

Abstract: A method for determining an overall loss of capacitance of a secondary cell, for example of an accumulator, which is brought about by ageing processes is provided. The overall loss of capacitance is determined additively from partial losses of capacitance which are determined by means of various parameters from various functions. A partial loss of capacitance is determined under constant peripheral conditions. If the peripheral conditions change, the partial losses of capacitance follow one another directly, i.e. with respect to the same loss of capacitance. The interval of the respective charge throughput rate is shifted here. The overall loss of capacitance of a secondary cell can be extended to the overall loss of capacitance of a package composed of a plurality of secondary cells.

Abstract: A converter arrangement has at least one AC voltage connection, at which an alternating current can be fed in or drawn, and at least one DC voltage connection, at which a direct current can be fed in or drawn. The converter arrangement contains at least two series circuits connected in parallel. The external connections of the series circuits form the DC voltage connections of the converter arrangement. Each of the series circuits is connected in parallel and contains in each case at least two submodules connected in series, each of the submodules containing at least two switches and a capacitor. An energy store is to be connected to the capacitor of at least one of the submodules, wherein a filter is connected electrically between the capacitor and the energy store.

Abstract: An apparatus for state of charge compensation includes at least two energy storage modules, each energy storage module having an energy storage module voltage, at least two voltage converter modules, with each voltage converter module being electrically connected to a respective one of the at least two energy storage modules in one-to-one correspondence and forming a corresponding submodule, an electrical machine electrically connected to the at least two submodules, and a control device configured to control a flow of electrical energy between at least one of the submodules and the electrical machine.

Abstract: An apparatus for supplying an electric voltage includes a battery system supplying a battery voltage and having at least two serially-connected battery modules, with each of the battery modules supplying a battery module voltage, and at least two voltage converter modules, with each of the voltage converter modules being electrically connected to a respective one of the at least two battery modules and receiving at a battery module voltage and supplying electric power to a connected electric component.

Abstract: A method for determining an overall loss of capacitance of a secondary cell, for example of an accumulator, which is brought about by ageing processes is provided. The overall loss of capacitance is determined additively from partial losses of capacitance which are determined by means of various parameters from various functions. A partial loss of capacitance is determined under constant peripheral conditions. If the peripheral conditions change, the partial losses of capacitance follow one another directly, i.e. with respect to the same loss of capacitance. The interval of the respective charge throughput rate is shifted here. The overall loss of capacitance of a secondary cell can be extended to the overall loss of capacitance of a package composed of a plurality of secondary cells.

Abstract: A method for determining a charge state of an electric energy store, having the following steps: measuring a voltage of the electric energy store on the basis of a charge quantity which is removed from or supplied to the electric energy store as a voltage characteristic curve and ascertaining a virtual open-circuit voltage characteristic curve from the measured voltage using at least one operating parameter of the electric energy store, ascertaining a first derivative and/or a second derivative of the virtual open-circuit voltage characteristic curve according to the charge quantity removed from or supplied to the electric energy store, detecting at least one characteristic of the first derivative and/or the second derivative of the virtual open-circuit voltage characteristic curve, and determining the charge state of the electric energy store using the detected at least one characteristic, is provided.

Abstract: A converter arrangement has at least one AC voltage connection, at which an alternating current can be fed in or drawn, and at least one DC voltage connection, at which a direct current can be fed in or drawn. The converter arrangement contains at least two series circuits connected in parallel. The external connections of the series circuits form the DC voltage connections of the converter arrangement. Each of the series circuits is connected in parallel and contains in each case at least two submodules connected in series, each of the submodules containing at least two switches and a capacitor. An energy store is to be connected to the capacitor of at least one of the submodules, wherein a filter is connected electrically between the capacitor and the energy store.

Abstract: A rechargeable battery pack, or accumulator pack, for instance for a hearing instrument, has a minimal installation size and high energy density. The accumulator pack has at least one rechargeable battery cell, charging electronics, signal electronics, and signal contacts. An encapsulation protects against moisture and contamination. The signal electronics transforms an output voltage of the battery cell into a predetermined voltage, which is made available by two signal contacts outside of the encapsulation. The transformation of the voltage enables the battery systems to be used with various battery and/or cell voltages. Li-ion battery systems, which generally operate with 3.7 volts, can thus also be used in hearing instruments, which generally operate with an operating voltage of 1.2 volts. The encapsulation of the accumulator pack is particularly advantageous in this context of the higher voltages.

Abstract: The present invention relates to a positive electrode for a rechargeable lithium ion battery comprised of single particles containing a compound of the formula LiMPCU, whereby M is a metal selected from the group consisting of Co, Ni, Mn, Fe, Ti or combinations thereof, and whereby in a X-Ray diffraction chart of the electrode the ratio of the intensity I1:I2 of two selected peaks (1) and (2) is larger than (9:1) and wherein I1 represents essentially the intensity of peak (1) assigned to the (020) plane and I2 represents the intensity of peak (2) assigned to the (301) plane. The invention relates further to a process for the manufacture of such a positive electrode and to a battery comprising such an electrode.

Abstract: A method of preparing a lithium secondary battery comprising a negative electrode, a positive electrode, an electrolyte and an additive for improving the stability of the solid electrolyte interface (SEI) film forming on the negative electrode, wherein at least part of said additive is applied to said negative electrode before the battery is assembled.