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Fuel cell air system and control method thereof

An air system and fuel cell technology, applied in the direction of fuel cells, fuel cell additives, electrical components, etc., can solve problems such as fuel cell system startup failure, expander stuck, and air compressor not working normally, to achieve broaden and reliable Sexuality and scope of application, the effect of avoiding sticking

Pending Publication Date: 2022-07-29
BEIJING SINOHYTEC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the air system architecture of the existing technology, the freezing of liquid water may cause the expander to be stuck, which will cause the air compressor to fail to work normally, and then cause the fuel cell system to fail to start

Method used

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  • Fuel cell air system and control method thereof
  • Fuel cell air system and control method thereof

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Embodiment Construction

[0022] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0023] As used herein, the term "including" and variations thereof mean open-ended inclusion, ie, "including but not limited to". The term "or" means "and / or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment." The terms "first", "second", etc. may r...

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PUM

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Abstract

The invention provides a fuel cell air system and a control method thereof, the system comprises an air compressor, an intercooler, a humidifier, a fuel cell stack, a water diversion structure and an expansion machine, a motor and a clutch are arranged between the air compressor and the expansion machine, and a three-way valve is arranged on an air inlet pipeline. The fuel cell air system controls the three-way valve and the electromagnetic clutch according to the monitored temperature of the expansion machine in the operation process, so that the fuel cell air system can effectively avoid starting failure caused by clamping stagnation of the expansion machine under the low-temperature condition, especially under the low-temperature cold starting condition; and the reliability and the application range of the fuel cell system are effectively expanded.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell air system and a control method thereof. Background technique [0002] The temperature of the exhaust gas discharged from the fuel cell stack is usually between 60 degrees Celsius and 90 degrees Celsius, and the absolute pressure is between 120kPa and 280kPa. The current advanced technology is to use an expander for energy recovery. In order to save space and reduce the complexity of components, the common fuel cell air system is to connect the air compressor, the control motor and the expander coaxially; the control motor drives the air compressor roller to rotate, and the exhaust gas from the stack drives the expander. Rotation, reducing motor torque, thereby achieving partial energy recovery. [0003] However, the actual operating conditions of the fuel cell system are changeable, including transient processes such as startup, operation, load change, purging, a...

Claims

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Application Information

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IPC IPC(8): H01M8/04089H01M8/04119H01M8/04291H01M8/04223H01M8/04225H01M8/0662
CPCH01M8/04089H01M8/04126H01M8/04291H01M8/04225H01M8/04253H01M8/0662
Inventor 丁铁新方川秦仲阳李飞强
Owner BEIJING SINOHYTEC
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