Abstract: A system for assessment of dimensional variation of an electro-chemical battery cell during charge/discharge cycling, including a test fixture configured to position thereon a battery cell. The test fixture includes a pressure plate configured to apply a force to the battery cell. The test fixture also includes a reaction plate disposed parallel to the pressure plate and configured to sandwich the battery cell between the reaction plate and the pressure plate. The test fixture additionally includes an elastic member assembly configured to facilitate adjustment of the force applied to the battery cell. The system additionally includes an electronic hardware device configured to regulate an electrical current applied to the battery cell. The system further includes a contact displacement sensor configured to detect change in the battery thickness.

Abstract: A galvanic element is provided having a solid-state cell stack containing a multiplicity of electrochemical solid-state cells stacked along a longitudinal axis in a housing. Each of the electrochemical solid-state cells has a stack including at least one anode layer, at least one cathode layer and at least one solid electrolyte layer arranged between the anode layer and the cathode layer. At least one of the electrochemical solid-state cells includes an elastically deformable compensation element, which at least partly compensates for a change in volume along the longitudinal axis of the stacked electrochemical solid-state cells. A method for producing such galvanic elements is also provided. Advantageous applications are found in vehicles and mobile devices including such galvanic elements.

Abstract: A cell cover for a prismatic cell, in particular a lithium-based cell, is provided. The cell cover includes a cover plate having a bottom side, a top side and at least one current-carrying cutout, at least one electrical terminal arranged at the top side, at least one current clip associated with the at least one electrical terminal, each current clip being connectable to the cover plate in a corresponding connecting region of the bottom side of the cover plate. A corresponding electrical conductor is arranged in each current-carrying cutout. The electrical terminals and respective current clip are contactable with their associated electrical conductor. The cover plate has in at least one of the connecting regions at least one connecting cutout spaced apart from the current-carrying cutout. A corresponding one of the current clips is connectable to the cover plate in a positively locking manner at the connecting cutout.

Abstract: A high energy density lithium-ion rechargeable battery cell is provided which includes an anode material containing a carbon-nanotube (CNT)-Si composite and a cathode material containing a core-shell gradient and/or concentration gradient nickel-based lithium metal oxide.

Abstract: A high energy density lithium-ion rechargeable battery cell is provided which includes an anode material containing a carbon-nanotube (CNT)-Si composite and a cathode material containing a core-shell gradient and/or concentration gradient nickel-based lithium metal oxide.

Abstract: In order to provide a sealing assembly for a fuel cell stack comprising a plurality of fuel cell units, which are arranged consecutively in a stacking direction, wherein each of the fuel cell units comprises a housing with at least one housing part made of a metallic material, which also has an adequate electrical insulation effect and an adequate mechanical strength at a high operating temperature of the fuel cell stack, it is proposed that the sealing assembly comprises at least one intermediate element made of a metallic material, wherein the intermediate element is soldered to a housing part of a first fuel cell unit at at least one location by means of a metal solder and is secured to a housing part of a second fuel cell unit at at least another location, wherein the intermediate element and/or the housing part of the first fuel cell unit is provided with a coating made of a ceramic material.

Abstract: A motor vehicle energy storage device includes a first electrical energy store characterized by a first characteristic voltage curve defining the open-circuit voltage of the first energy store depending on the relative charge state and by a first characteristic resistance curve defining the internal resistance of the first energy store relevant for a charge process of the energy store, and a second electrical energy store connected in parallel and characterized by a second characteristic voltage curve defining the open-circuit voltage of the second energy store depending on the relative charge state and by a second characteristic resistance curve defining the internal resistance relevant for a charge process of the second energy store.

Abstract: A cell cover for a prismatic cell, in particular a lithium-based cell, is provided. The cell cover includes a cover plate having a bottom side, a top side and at least one current-carrying cutout, at least one electrical terminal arranged at the top side, at least one current clip associated with the at least one electrical terminal, each current clip being connectable to the cover plate in a corresponding connecting region of the bottom side of the cover plate. A corresponding electrical conductor is arranged in each current-carrying cutout. The electrical terminals and respective current clip are contactable with their associated electrical conductor. The cover plate has in at least one of the connecting regions at least one connecting cutout spaced apart from the current-carrying cutout. A corresponding one of the current clips is connectable to the cover plate in a positively locking manner at the connecting cutout.

Abstract: A galvanic element is provided having a solid-state cell stack containing a multiplicity of electrochemical solid-state cells stacked along a longitudinal axis in a housing. Each of the electrochemical solid-state cells has a stack including at least one anode layer, at least one cathode layer and at least one solid electrolyte layer arranged between the anode layer and the cathode layer. At least one of the electrochemical solid-state cells includes an elastically deformable compensation element, which at least partly compensates for a change in volume along the longitudinal axis of the stacked electrochemical solid-state cells. A method for producing such galvanic elements is also provided. Advantageous applications are found in vehicles and mobile devices including such galvanic elements.

Abstract: In order to provide a sealing assembly for a fuel cell stack comprising a plurality of fuel cell units, which are arranged consecutively in a stacking direction, wherein each of the fuel cell units comprises a housing with at least one housing part made of a metallic material, which also has an adequate electrical insulation effect and an adequate mechanical strength at a high operating temperature of the fuel cell stack, it is proposed that the sealing assembly comprises at least one intermediate element made of a metallic material, wherein the intermediate element is soldered to a housing part of a first fuel cell unit at at least one location by means of a metal solder and is secured to a housing part of a second fuel cell unit at at least another location, wherein the intermediate element and/or the housing part of the first fuel cell unit is provided with a coating made of a ceramic material.

Abstract: In a fuel cell stack having a plurality of fuel cell units, which are arranged consecutively in a stacking direction, wherein each of the fuel cell units comprises a housing with at least one housing part made of a metallic material, which has an adequate electrical insulation effect and an adequate mechanical strength at a high operating temperature of the fuel cell stack, a sealing assembly is provided and comprises at least one intermediate element made of a metallic material, wherein the intermediate element is soldered to a housing part of a first fuel cell unit at at least one location by a metal solder and is secured to a housing part of a second fuel cell unit at at least another location, wherein the intermediate element and/or the housing part of the first fuel cell unit is provided with a coating made of a ceramic material.

Abstract: A motor vehicle energy storage device includes a first electrical energy store characterized by a first characteristic voltage curve defining the open-circuit voltage of the first energy store depending on the relative charge state and by a first characteristic resistance curve defining the internal resistance of the first energy store relevant for a charge process of the energy store, and a second electrical energy store connected in parallel and characterized by a second characteristic voltage curve defining the open-circuit voltage of the second energy store depending on the relative charge state and by a second characteristic resistance curve defining the internal resistance relevant for a charge process of the second energy store.

Abstract: In order to provide a sealing assembly for a fuel cell stack comprising a plurality of fuel cell units, which are arranged consecutively in a stacking direction, wherein each of the fuel cell units comprises a housing with at least one housing part made of a metallic material, which also has an adequate electrical insulation effect and an adequate mechanical strength at a high operating temperature of the fuel cell stack, it is proposed that the sealing assembly comprises at least one intermediate element made of a metallic material, wherein the intermediate element is soldered to a housing part of a first fuel cell unit at least one location by means of a metal solder and is secured to a housing part of a second fuel cell unit at least another location, wherein the intermediate element and/or the housing part of the first fuel cell unit is provided with a coating made of a ceramic material.

Abstract: Solid oxide fuel cells with a metal bearing structure, having passage orifices for a gas and intended for a cathode-electrolyte-anode unit. A bipolar plate is provided on the other side of the bearing structure, or the like. The bearing structure is made of a metal, which forms a protective oxide layer, which is electrically insulating, and operates as an electric resistance heating element for adjusting the fuel cell temperature. An electric current may be guided through the bearing structure between its protective oxide layers.

Abstract: A system for converting fuel and air into reformate with a reformer which has a reaction space, a nozzle for supplying a fuel/air mixture to the reaction space, and a fuel feed for supplying fuel to the nozzle (14). The nozzle is a Venturi nozzle with an air inlet area and a diffusor area which extends downstream with respect to the air inlet area.

Abstract: The invention relates to a system for converting fuel and air into reformate with a reformer which has a reaction space, a nozzle for supplying a fuel/air mixture to the reaction space, and a fuel feed for supplying fuel to the nozzle. In the invention, the air inlet area of the nozzle is provided with air guidance means which impart a swirl to the in-flowing air.

Abstract: Solid oxide fuel cells with a metal bearing structure, having passage orifices for a gas and intended for a cathode-electrolyte-anode unit. A bipolar plate is provided on the other side of the bearing structure, or the like. The bearing structure is made of a metal, which forms a protective oxide layer, which is electrically insulating, and operates as an electric resistance heating element for adjusting the fuel cell temperature. An electric current may be guided through the bearing structure between its protective oxide layers.

Abstract: An energy conversion system is provided having a reformer device and a fuel cell device which is arranged behind the reformer device, the reformer device has at least one fuel feeding pipe and one air feeding pipe. The reformer device includes a reformer, wherein a reformate heat exchanger is arranged between the reformer and the fuel cell device. The reformate heat exchanger transfers heat from the hot reformate gas to a fluid in a fluid circulation system.

Abstract: In order to provide a sealing assembly for a fuel cell stack comprising a plurality of fuel cell units, which are arranged consecutively in a stacking direction, wherein each of the fuel cell units comprises a housing with at least one housing part made of a metallic material, which also has an adequate electrical insulation effect and an adequate mechanical strength at a high operating temperature of the fuel cell stack, it is proposed that the sealing assembly comprises at least one intermediate element made of a metallic material, wherein the intermediate element is soldered to a housing part of a first fuel cell unit at at least one location by means of a metal solder and is secured to a housing part of a second fuel cell unit at at least another location, wherein the intermediate element and/or the housing part of the first fuel cell unit is provided with a coating made of a ceramic material.

Abstract: A system for converting fuel and air into reformate with a reformer which has a reaction space, a nozzle for supplying a fuel/air mixture to the reaction space, and a fuel feed for supplying fuel to the nozzle (14). The nozzle is a Venturi nozzle with an air inlet area and a diffusor area which extends downstream with respect to the air inlet area.