Fuel cell system and method of controlling fuel cell system

A fuel cell system, fuel cell technology, applied in the direction of fuel cells, circuits, electrical components, etc., can solve the problems of increased calorific value, no disclosure, high energy consumption, etc.

Pending Publication Date: 2021-11-12
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the heating value of the fuel cell is increased only by cooling the water at a lower temperature, the energy consumption due to the preheating process may become excessive
In Patent Document 1, there is no disclosure on this point

Method used

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  • Fuel cell system and method of controlling fuel cell system
  • Fuel cell system and method of controlling fuel cell system
  • Fuel cell system and method of controlling fuel cell system

Examples

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Embodiment Construction

[0053] refer to figure 1 , in the embodiment based on the present disclosure, the fuel cell system 1 includes a fuel cell 10 . The fuel cell 10 is formed by laminating a plurality of single cells. The fuel cell 10 includes a hydrogen passage 10h, an air passage 10a, and a cooling water passage 10w. In one example, the fuel cell system 1 is mounted on a vehicle.

[0054] In the embodiment based on the present disclosure, the hydrogen passage 10h extends from the inlet 10hi to the outlet 10ho within the fuel cell 10 . An anode (not shown) is arranged in the hydrogen passage 10h. A hydrogen supply path 31 is connected to the inlet 10hi. A hydrogen discharge path 32 is connected to the outlet 10ho. The outlet of the hydrogen discharge path 32 is connected to the inlet of the gas-liquid separator 33 . The upper outlet of the gas-liquid separator 33 is connected to the junction 35 of the hydrogen supply path 31 via the return path 34 . A lower outlet of the gas-liquid separat...

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Abstract

The invention provides a fuel cell system and a method of controlling the fuel cell system, which reduce energy consumption caused by warmup processing and make warmup processing reliable or terminate warmup processing as early as possible. A cooling water temperature of a fuel cell 10 is detected by a sensor 94d. Based on the outside air temperature, a first threshold temperature and a second threshold temperature lower than the first threshold temperature are calculated. When it is judged that the cooling water temperature is lower than the first threshold temperature and higher than the second threshold temperature, first warmup processing is performed. When it is judged that the cooling water temperature is lower than the second threshold temperature, second warmup processing with an amount of heat generation greater than the first warmup processing is performed.

Description

technical field [0001] The present disclosure relates to a fuel cell system and a method of controlling a fuel cell system. Background technique [0002] There is known a fuel cell system that calculates an upper limit output value of the fuel cell based on the cooling water temperature of the fuel cell, and performs a warm-up operation when the upper limit output value is equal to or less than a drivable output value (for example, refer to Patent Document 1). The lower the cooling water temperature, the lower the upper limit output value of the fuel cell. Therefore, in Patent Document 1, it is considered that the warm-up operation is performed when the cooling water temperature is equal to or lower than the temperature corresponding to the drivable output value. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2013-045514 [0004] However, in consideration of making the anti-freezing process reliable or terminated earlier, it is preferable to increase the calorif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0432H01M8/04223H01M8/04858H01M8/04992
CPCH01M8/0432H01M8/04268H01M8/04992H01M8/04865Y02E60/50H01M8/04873H01M8/04253
Inventor 神谷明宏难波良一户井田政史
Owner TOYOTA JIDOSHA KK
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