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Operating load control for fuel cell power system in fuel cell vehicle

A fuel cell vehicle, fuel cell technology, applied in battery/fuel cell control devices, fuel cells, fuel cell additives, etc., can solve problems such as high cost and reduced fuel consumption

Inactive Publication Date: 2003-01-01
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, under such control, for normal vehicle operation mode, the fuel cell electric system is generally operated more in the low-efficiency range, and as described later, the fuel consumption is reduced
Furthermore, in order to meet the wide electric load range of 0-100%, fast response and high accuracy, high-resolution sensors and flow control valves are required, the cost is high and further control is required

Method used

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  • Operating load control for fuel cell power system in fuel cell vehicle
  • Operating load control for fuel cell power system in fuel cell vehicle
  • Operating load control for fuel cell power system in fuel cell vehicle

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Embodiment Construction

[0023] Refer to the attached figure 1 , figure 1 The structure of the fuel cell vehicle related to the present invention is shown. The fuel cell power system 100 enclosed by the dashed line in the figure includes: a reforming furnace 1, a water tank 2, a fuel tank 3, a fuel cell 4, and a compressor 5.

[0024] The reformer 1 is supplied with water and methanol from the water tank 2 and the fuel tank 3, and the reformer 1 generates a reformed gas containing hydrogen from the steam reforming. Steam reforming is an endothermic reaction. The reformed gas is supplied to the anode of the fuel cell 4. Hydrocarbon fuels other than methanol such as gasoline can also be used as fuel.

[0025] If the reforming catalyst injected into the reformer 1 does not reach the activation temperature, for example, when the system is just started, the air as the oxidant is supplied to the reformer 1 from the compressor 5, and the reforming caused by partial oxidation of methanol can also be performed. ...

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Abstract

The present invention relates to an operating load control for fuel cell power system fuel cell vehiclel. Said fuel cell vehicle drives a motor (9) with electric power from a fuel cell power system (100) comprising a fuel cell (4) which generates electricity using hydrogen and oxygen. A controller (10) calculates an electrical load demand required to run the vehicle. When this value is below a predetermined load, it performs constant load operation of the fuel cell power system (100), and when the predetermined load value is exceeded, it operates it under a load according to the electrical load demand. The demand for resolution and precision of the various sensors or flowrate control valves installed in the fuel cell power system are thereby suppressed, costs can be reduced, and fuel cost-performance is improved by continuing an efficient operating state.

Description

Technical field [0001] The present invention relates to the workload control of a fuel cell power system in a fuel cell vehicle. Background technique [0002] In the fuel cell power system of a fuel cell vehicle, the electrical load changes rapidly over time with a range of 0-100%, which is the main difference from a stationary fuel cell power supply device. Although the workload of the fuel cell power system is required to be consistent with the electrical load so that the fuel cell power system provides neither more nor less power, it is difficult to keep the workload of the fuel cell power system consistent with the electrical load. In JP-A-H4-51466 published by the Japanese Patent Office in 1996, a battery is connected to the output side of the fuel cell to compensate for the delay of the fuel cell power system. When the electrical load exceeds the output of the fuel cell, the battery will compensate for the insufficient, and when the electrical load is less than the output o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/00B60L11/18H01M8/04H01M16/00
CPCY02T90/34H01M8/04626Y02T90/32H01M2250/20H01M8/04955H01M8/0494Y02E60/50H01M16/006H01M8/04992H01M8/04B60L11/1881B60L2240/547B60L2240/549B60L58/13B60L58/40B60L58/15Y02T10/70Y02T90/40Y02E60/10
Inventor 岩崎靖和
Owner NISSAN MOTOR CO LTD
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