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Supply device having a fuel cell device and a battery, fuel cell vehicle and method for starting a supply device

A technology of supply device and fuel cell, which is applied in the direction of fuel cell application, fuel cell, battery circuit device, etc., to achieve the effect of simplifying the structure

Pending Publication Date: 2021-03-09
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the use of the voltage converter results in additional weight and additional installation space that must be provided for the supply device

Method used

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  • Supply device having a fuel cell device and a battery, fuel cell vehicle and method for starting a supply device

Examples

Experimental program
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Embodiment Construction

[0031] exist figure 1 A schematic diagram of a supply device 1 for supplying a first electrical consumer 2 and a second electrical consumer 3 is shown in . The present supply device 1 is preferably also capable of supplying further electrical consumers, not shown in greater detail, with electrical energy.

[0032] The supply device 1 includes a primary grid 4 in which a fuel cell arrangement 5 is present. Furthermore, the supply device 1 includes a secondary grid 6 in which there is a battery 7 which has an operating voltage range bounded upwardly by a maximum voltage and downwardly by a minimum voltage. Furthermore, battery 7 has an operating amperage range that is bounded downward by a minimum amperage and upward by a maximum amperage. The accumulator 7 is designed to supply the consumers 2 , 3 with electricity.

[0033] The electrical consumer 2 includes a drive unit 8 which is in the form of an electric motor. The electric machine is generally operable with three-phase...

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PUM

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Abstract

The invention relates to a supply device (1) for electrically supply at least one consumer (2, 3), said supply device having: a primary current system (4) in which a fuel cell device (5) is mounted; asecondary current system (6) in which a battery (7) which has an operating voltage range that is limited at the top to a maximum voltage and at the bottom to a minimum voltage is mounted, and which has an operating current strength range for supplying current to the at least one consumer (2, 3). An open-circuit voltage of the fuel cell device (5) corresponds at most to the maximum voltage of thebattery (7), wherein an impedance spectroscopy device (15) which is designed to carry out an impedance spectroscopy measurement on the fuel cell device (5) or on individual fuel cells of the fuel celldevice (5), is provided in the primary current system (4). The invention also relates to a fuel cell vehicle having such a supply device (1) and to a method for starting the supply device (1).

Description

technical field [0001] The invention relates to a supply device for supplying at least one electrical consumer with a primary grid in which a fuel cell arrangement is present. Furthermore, the supply device includes a secondary grid in which there is a battery with an operating voltage range bounded upwardly by a maximum voltage and downwardly by a minimum voltage. Furthermore, the battery has an operating amperage range for energizing the at least one electrical consumer. Furthermore, the invention relates to a fuel cell vehicle with such a supply device and a method for activating such a supply device. Background technique [0002] If the supply device is used in a motor vehicle, it is subjected to various weather conditions. Here, low temperatures below the freezing point of water are known to cause considerable problems when starting up fuel cell systems in the supply system. For example, when freezing conditions exist, the anode space and / or the cathode space may bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/34
CPCH02J7/34H01M8/04634B60R16/033H02J2300/30H01M8/04302H01M8/04253H01M2250/20H01M16/006Y02T90/40Y02T10/70Y02E60/50Y02E60/10H01M8/04641H01M2220/20H01M2250/402
Inventor M·布罗M·席德迈尔F·舒尔特
Owner AUDI AG