Patent application number | Description | Published |
20080286618 | FUEL CELL COOLING DEVICE - A fuel cell cooling device has a cooling loop for circulating a coolant fluid. At least during the operation of the fuel cell, an ion extraction medium that is in the liquid state is provided. A method for cleaning a coolant with a corresponding fuel cell cooling device is provided as well. | 11-20-2008 |
20090123811 | ELECTROCHEMICAL CELL AND FUEL CELL INCLUDING IT - An electrochemical cell for extraction of electrical energy is described, which includes a first gas chamber provided with a first gas feeder for a first gas, in which chamber a first electrode is positioned. The cell includes a second gas chamber provided with a further gas feeder for a second gas, in which chamber a second electrode is positioned. The first and second gas chambers are in ion-conducting contact via a diaphragm, and the first and second electrodes form an anode and cathode, respectively, of the electrochemical cell. The first electrode functioning as an anode, the diaphragm, the first gas chamber, and/or the first gas feeder contain an oxygen-storing material. | 05-14-2009 |
20090123815 | Electrochemical energy store - An electrochemical energy store, including at least one electrochemical cell as well as at least one latent heat storage unit, which includes at least one phase change material. The at least one electrochemical cell is a lithium ion accumulator. The exemplary embodiments and/or exemplary methods of the present invention also includes the use of the electrochemical energy store in an electric vehicle or a hybrid vehicle. Furthermore, the exemplary embodiments and/or exemplary methods of the present invention relates to a method for temperature regulation of an electrochemical energy store. | 05-14-2009 |
20090263683 | METHOD AND DEVICE FOR IMPROVING THE SERVICE LIFE OF A FUEL CELL AT TRANSITIONS IN OPERATION - The subject of the present invention relates to a method and a protector for reducing degradation of fuel cell systems at transitions in operation, in particular at electrodes or catalysts in a combustion chamber of a stack of a PEM fuel cell system in startup and shutoff events of the fuel cell system. A switchable material delivery device is provided for varying a delivery of material to the fuel cell system, so that a transition from a first state of the fuel cell system to a second state of the fuel cell system can be initiated, such that a potential difference between different electrodes can be effected. At least one reducing mechanism is provided for reducing the potential difference between the different electrodes during the transition, in which the reducing mechanism includes at least one compensating device for an unequal gas distribution by reducing the proportions causing degradation, to reduce degradation. The compensation device includes at least one short-circuiting unit, with which the different electrodes can be short-circuited, in order to reduce the potential difference. | 10-22-2009 |
20090286115 | METHOD FOR AVOIDING GASEOUS IMPURITY INCLUSIONS IN AT LEAST ONE GAS CHAMBER OF A FUEL CELL DURING AN IDLE PERIOD AND FUEL CELL EQUIPPED WITH MEANS FOR CARRYING OUT THE METHOD - A method and apparatus are provided for avoiding gaseous impurity inclusions in at least one gas chamber of a fuel cell during an idle period of the fuel cell through the production of a positive pressure in the at least one gas chamber. The method includes the steps producing educts that are supplied to the fuel cell for operation of the fuel cell during an operating mode, supplying the educts to the gas chamber so that the gas chamber is at least partially filled with the educts, and filling the gas chamber to produce a positive pressure in the gas chamber and thereby essentially avoiding gaseous impurity inclusions. | 11-19-2009 |
20130022885 | FUEL CELL SYSTEM HAVING IMPROVED FUEL GAS CIRCULATION - The invention relates to a fuel cell system ( | 01-24-2013 |
20140072843 | ELECTROCHEMICAL ENERGY STORE - An electrochemical energy store, e.g., a lithium-ion battery, includes a cell chamber, in which at least one anode, at least one cathode, and an electrolyte, which is situated between the anode and the cathode, are situated, the cell chamber being separated from the external surroundings by a housing, and at least one detection substance for the detection of a leak of the housing being situated in the cell chamber. The energy store configuration allows a leak of the energy store to be detected in a simple way. | 03-13-2014 |
20150132616 | METHOD AND DEVICE FOR TRIGGERING AT LEAST ONE SAFETY FUNCTION IN THE EVENT OF A STATE OF AN ELECTROCHEMICAL STORE THAT IS CRITICAL WITH REGARD TO SAFETY, AND ELECTROCHEMICAL ENERGY STORAGE SYSTEM - A method for triggering at least one safety function in the event of a safety-critical state of an electrochemical energy store includes: detecting the safety-critical state of the electrochemical energy store using a sensor signal which represents at least one detected state variable of the electrochemical energy store; generating a safety function signal based on the detected safety-critical state of the electrochemical energy store; and triggering the at least one safety function based on the safety function signal. | 05-14-2015 |