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Fuel cell engine air supply system

An air supply and fuel cell technology, applied in fuel cells, fuel cell additives, electrical components, etc., can solve problems such as compressor surge, affecting the working stability of the air supply system, and damaging the compressor.

Inactive Publication Date: 2021-02-26
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, air compressors generally use centrifugal air compressors, but centrifugal air compressors will surge under low-load conditions, because the air flow required for fuel cell stacks to enter low-load conditions is reduced, which may easily lead to compressed air. The surge of the compressor will damage the compressor and affect the working stability of the air supply system

Method used

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  • Fuel cell engine air supply system
  • Fuel cell engine air supply system
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Embodiment Construction

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...

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Abstract

The invention discloses a fuel cell engine air supply system. The air supply system comprises a fuel cell stack, a gas supply main path, an exhaust main path, an air supply bypass branch and a drivingmotor; one end of the gas supply main path is connected with a cathode inlet of the fuel cell stack, the other end of the gas supply main path is communicated with the external environment, and a gascompressor is arranged on the gas supply main path; one end of the exhaust main path is connected with a cathode outlet of the fuel cell stack, the other end of the exhaust main path is communicatedwith the external environment, and a turbine is arranged on the exhaust main path; one end of the air supply bypass branch is connected with the air supply main path, the connecting point is located behind the air compressor, the other end of the air supply bypass branch is connected with the exhaust main path, the connecting point is located in front of the turbine, and a bypass valve is arrangedon the air supply bypass branch; and one end of an output shaft of the driving motor is connected with the air compressor, and the other end of the output shaft of the driving motor is connected withthe turbine. The air supply system can recover the exhaust energy of the fuel cell, and meanwhile surge of the air compressor is avoided.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to an air supply system for a fuel cell engine. Background technique [0002] A fuel cell is an energy conversion device that uses hydrogen and oxygen to undergo an electrochemical reaction to convert chemical energy into electrical energy. Due to the characteristics of high efficiency and no pollution, fuel cells are widely used in the field of automobiles as the engine of automobiles. [0003] In order to make the fuel cell work efficiently and reliably, it is necessary to provide enough air for the cathode of the fuel cell, and also meet the requirements of temperature, humidity, and pressure. Therefore, it is necessary to set up an air supply system to provide air for the fuel cell. As an important part of the air supply system, the air compressor can provide sufficient air flow and pressure for the fuel cell, and it is also the most energy-consuming component in the air sup...

Claims

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Application Information

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IPC IPC(8): H01M8/04082H01M8/04089H01M8/04111H01M8/2465
CPCH01M8/04089H01M8/04104H01M8/04111H01M8/04201H01M8/2465Y02E60/50
Inventor 包宁史艳彬李强皮文列侯福建张正兴
Owner FAW JIEFANG AUTOMOTIVE CO
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