Abstract:
Method for producing electric cells for electrochemical energy storage devices, the method of production comprising the following steps: (S1a) feeding an anode strip, (S1b) feeding a cathode strip (20), (S1c) feeding a separator strip (30), preferably two separator strips, (S3a) stamping out an anode element from the anode strip, (S3b) stamping out a cathode element from the cathode strip (20), (S5) cutting the separator strip (30), preferably the two separator strips, into separator elements, (S6a) applying an anode element to a first separator element to form an anode-separator element, (S6b) applying a cathode element to a second separator element to form a cathode-separator element, and (S7) stacking an anode number of anode-separator elements and a cathode number of cathode-separator elements to form an anode-separator-and-cathode-separator stack.
Abstract:
An electrochemical cell comprises an electrode stack (10), at least one current conductor (12, 14) connected to the electrode stack (10), and a casing (20, 22) which at least partially encloses the electrode stack (10). The at least current conductor (12, 14) extends at least partially out of the casing (20, 22), and the casing (20, 22) is provided with at least one pressure relief means (26, 28, 30). It is advantageous for protecting the electronics and the environment of the electrochemical cell that the at least one pressure relief means (26, 28, 30) is disposed preferably remotely from the at least one current conductor (12, 14) as possible and preferably in a lower area of the casing (20, 22) when the electrochemical cell is in the installed state.
Abstract:
In an electrochemical energy store having a housing (I) and having at least one electrochemical cell (2) arranged in the housing (I), at least one wall of the housing (I) is coated or impinged on at least in regions with an extinguishing agent or an extinguishing agent additive (7-9).
Abstract:
The invention relates to a method for selecting electrochemical cells during the production of a battery that has a number of electrochemical cells, said method having the following steps: (S1) detecting the parameter data (DPar.) of an individual cell that is to be analysed; (S2) transmitting the detected parameter data (Dpar.) to a control unit; (S3) assigning the detected parameter data (DPar.) to the electrochemical cell; and (S4) determining for the electrochemical cell that has been allocated the parameter data if a predefined relationship exists between the parameter data (Dpar.) and predefined parameter values (WPar, Wpar.1, WPar.2, WPar.3. WPar 4, WPar.5) by means of the control unit. The method can further have the following steps: (S5a) feeding the electrochemical cell that has been assigned the parameter data (DPar.) to a first production line for producing a first type of battery, if in step (S4) the existence of a predefined relationship has been determined; or (S5b) feeding the electrochemical cell that has been assigned the parameter data (DPar.) to a second production line for producing a second type of battery, if in step (S4) the non-existence of a predefined relationship has been determined.
Abstract:
The invention relates to a housing (1) for receiving at least one flat electrochemical cell (2), comprising two housing side walls (4) which are disposed substantially parallel to one another, wherein a flat cooling bracket (9) is disposed on at least one flat electrochemical cell (2). The flat cooling bracket (9) is preferably disposed substantially parallel to the flat electrochemical cell (2). The flat electrochemical cell (2) may also have a sealing seam (3) extending at least in some regions on the edge of said cell and, for each flat electrochemical cell (2) to be received, the housing side walls (4) disposed parallel to one another comprise, in the inner faces thereof that are facing one another, a pair of opposite notches (5) configured to receive the at least one sealing seam (3) of the respective flat electrochemical cell (2).
Abstract:
An exothermic component has a reactive multilayer arranged in grid-shape fashion on a carrier. The exothermic component can be incorporated in an electrode construction of a galvanic cell comprising electrode layers, a separator layer and current collecting layers. In addition, a matrix-like sensor arrangement can be provided in the electrode construction. Defect locations in the electrode construction can be identified on the basis of output signals of the sensor arrangement. By igniting selected regions of the reactive multilayer grid, which react exothermically, it is possible to destroy the defect locations in a targeted manner.
Abstract:
A housing (1) for accommodating at least one flat electrochemical cell (2), which has a seal seam (3) extending at least regionally along the edge of said cell, comprises two housing side walls (4) which are arranged substantially parallel to one another and which are provided, in the mutually opposite inner surfaces thereof, with a pair of incisions (5) situated opposite one another for each cell (2) that is to be accommodated, said incisions being designed to accommodate the at least one seal seam (3) of the particular cell (2). The housing (1) here is preferably formed of a foam material.
Abstract:
The invention relates to a frame (1) for an electrochemical energy storage device (2), wherein the frame (1) is intended to enclose the electrochemical energy storage device (2) at least in some areas and comprises a frame element (3) which includes a first frame element area (5) having a first yield point. Said frame is characterized in that it comprises a second frame element area (6) having a second yield point and in that the quotient of the yield points of the second frame element area (6) and the first frame element area (5) lies below a predetermined value.
Abstract:
In an electrochemical energy store device, the electrochemically active components (11, 13, 21, 23, 31, 33), or additional components (12, 22, 32), are designed and/or arranged in a hermetically sealed container such that they inhibit the process of a chemical reaction of the electrochemically active components of the energy store device as soon as positive pressure builds, or could build, inside the container as a result of said chemical reaction. Preferably, the flow (14, 34, 35) of a movable component into the area of a chemical reaction, in which said movable component participates as a reactant, is inhibited or suppressed, at least locally, as soon as positive pressure build, or could build, inside the container as a result of said chemical reaction.
Abstract:
The invention relates to a secondary battery, in particular a lithium-ion secondary battery, which has a rapid charging capability. The secondary battery has at least one electrochemical cell and an electrical charge control system, wherein the electrochemical cell has at least two electrodes and at least one separator, wherein the charge control system is designed to monitor the process of charging the secondary battery such that, at least at times, it allows a relative charging current with a charging current value which, in particular, is at least 1 C, and wherein the separator has a coating which is composed of an ion-conducting material which has at least one inorganic component. The invention furthermore relates, in particular, to a lithium-ion secondary battery, to a charge control system for a secondary battery, to an electrochemical cell for a secondary battery, to an arrangement comprising at least one electrode and a separator for an electrochemical cell such as this, and to a method for carrying out a rapid charging process of a secondary battery.