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Vehicle-mounted low-temperature liquid hydrogen fuel cell system and fuel cell heat exchange method

A fuel cell system and fuel cell technology, which is applied in the fields of fuel cell heat exchange, fuel cell, fuel cell auxiliary, etc., can solve the problems of low output power and service life of fuel cell

Active Publication Date: 2021-09-21
WEICHAI POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to at least solve the problem of low output power and life-span of existing fuel cells

Method used

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  • Vehicle-mounted low-temperature liquid hydrogen fuel cell system and fuel cell heat exchange method
  • Vehicle-mounted low-temperature liquid hydrogen fuel cell system and fuel cell heat exchange method

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Embodiment Construction

[0037] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary 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 for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0038] It should be understood that terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated fea...

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Abstract

The invention relates to the technical field of fuel cells, and concretely relates to a vehicle-mounted low-temperature liquid hydrogen fuel cell system and a fuel cell heat exchange method. The vehicle-mounted low-temperature liquid hydrogen fuel cell system comprises a fuel cell, a vehicle-mounted hydrogen storage system, a waste heat utilization system and a controller; the vehicle-mounted hydrogen storage system comprises a liquid hydrogen storage tank and a liquid hydrogen vaporization unit, the liquid hydrogen vaporization unit comprises a liquid hydrogen vaporizer, and the liquid hydrogen storage tank is connected with the fuel cell through the liquid hydrogen vaporizer; the waste heat utilization system comprises a heat exchange pipeline, the heat exchange pipeline is used for heat exchange between the liquid hydrogen vaporizer and the fuel cell and / or the heating unit, and a control valve is arranged on the heat exchange pipeline; and the controller controls the control valve to open or close according to the response power of the fuel cell. In the vehicle-mounted low-temperature liquid hydrogen fuel cell system, the liquid hydrogen vaporizer exchanges heat with the heat exchange pipeline, the controller can control the heat exchange amount, the temperature of hydrogen at an inlet of the fuel cell is increased, the output power of the fuel cell is improved, and the service life of the fuel cell is prolonged.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a vehicle-mounted low-temperature liquid hydrogen fuel cell system and a fuel cell heat exchange method. Background technique [0002] In the traditional liquid hydrogen storage and supply system for hydrogen-powered vehicles, the liquid hydrogen flows out of the liquid hydrogen storage tank, evaporates and gasifies through the vaporizer, stabilizes the pressure through the pressure regulating valve, and finally transports it to the fuel cell to supply hydrogen. In this process, the liquid hydrogen passing through the vaporizer cannot guarantee that all the liquid hydrogen is completely vaporized, and the unvaporized part is recycled to the liquid hydrogen storage tank for secondary evaporation and vaporization to supply hydrogen. [0003] At present, the low-temperature liquid hydrogen storage technology for vehicles has the following disadvantages: the temperature of liquid ...

Claims

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Application Information

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IPC IPC(8): H01M8/04007H01M8/04082H01M8/04089H01M8/04955
CPCH01M8/04074H01M8/04201H01M8/04089H01M8/04955H01M2250/20Y02T90/40
Inventor 李力军赵强王昕雨郝佳燕泽英
Owner WEICHAI POWER CO LTD
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