{
  "$type": "site.standard.document",
  "description": "A power supply device for the electrical power supply of at least one consumer has a primary power grid, in which a fuel cell device is present, having a secondary power grid, in which a battery is present, having an operating voltage range bounded at the top by a maximum voltage and at the bottom…",
  "path": "/patents/1298053",
  "publishedAt": "2021-08-19T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M8/04641",
    "AUDI AG"
  ],
  "textContent": "A power supply device for the electrical power supply of at least one consumer has a primary power grid, in which a fuel cell device is present, having a secondary power grid, in which a battery is present, having an operating voltage range bounded at the top by a maximum voltage and at the bottom by a minimum voltage, and having an operating current strength range for powering the at least one consumer. An open circuit voltage of the fuel cell device corresponds at most to the maximum voltage of the battery, while there is present in the primary power grid an impedance spectroscopy device, which is designed to perform an impedance spectroscopy measurement on the fuel cell device or on individual fuel cells of the fuel cell device. A fuel cell vehicle has such a power supply device and a method for starting a power supply device.",
  "title": "POWER SUPPLY DEVICE HAVING A FUEL CELL DEVICE AND A BATTERY, FUEL CELL VEHICLE, AND METHOD FOR STARTING A POWER SUPPLY DEVICE"
}