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Ventilation system of fuel cell box body, fuel cell system and vehicle

A fuel cell system and fuel cell technology, applied in the fields of fuel cells, fuel cell control, fuel cell additives, etc., can solve the problems of the system not running normally, the system insulation failure, the volume of water in the fuel cell box, etc., and achieve a compact structure. , good air permeability, small footprint effect

Pending Publication Date: 2022-05-31
BEIJING SINOHYTEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially in rainy and snowy weather, the humidity in the ambient air is high, and the "condensation effect" is more obvious. In severe cases, water will accumulate in the fuel cell box, causing system insulation failure and causing the system to fail to operate normally.

Method used

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  • Ventilation system of fuel cell box body, fuel cell system and vehicle
  • Ventilation system of fuel cell box body, fuel cell system and vehicle
  • Ventilation system of fuel cell box body, fuel cell system and vehicle

Examples

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Effect test

Embodiment 1

[0045] combine Figure 1-Figure 7, the present embodiment provides a ventilation system for a fuel cell box, the ventilation system includes a waterproof venting device 1, an airflow driving device 2 and a heating device 3; the airflow driving device 2 is connected to the waterproof and ventilating device 1 and the The heating device 3 is connected to the air inlet of the fuel cell case 7 .

[0046] In this embodiment, the airflow driving device 2 is used to drive the circulation of the ventilation airflow, and a high-pressure blower or a high-pressure fan can be used, preferably a miniature electronically controlled high-pressure blower, for example: the blower adopts a DC brushless high-pressure blower with a blade diameter of about 50mm , 24V power supply; and the waterproof performance can be improved through plastic packaging, and the speed can be adjusted through PWM. Among them, plastic sealing refers to the waterproof treatment of the peripheral structure of the high-...

Embodiment 2

[0060] This embodiment and Embodiment 1 are inventions with the same concept, and the same parts will not be repeated, see Fig. Figure 8 , Figure 9 and Figure 10 The present embodiment provides a ventilation system for a fuel cell case. In the present embodiment, in the fuel cell case ventilation system, the horizontal section of the casing 10 is circular, and the waterproof and breathable unit 12 is arranged in a radial structure. In this implementation, it is also possible to delay setting a plurality of slots in the installation of the sealing plate, for example, the installation of the sealing plate is integrally formed, wherein 4 or 5 equal slots are set, the waterproof and breathable unit is arranged in the slot, and the installation of the sealing plate 13 The bottom ventilation groove 131 is separated from the top ventilation groove 132 by a waterproof and breathable unit,

[0061] The upper side edge and the lower side edge of the waterproof and breathable unit 1...

Embodiment 3

[0064] This embodiment provides a fuel cell system, which constitutes a similar technical concept to the above embodiment, and the same parts will not be repeated, see Figure 11 In the fuel cell system, the fuel cell stack 6 is arranged in the fuel cell case 7, and the air inlet of the fuel cell case 7 is connected to the ventilation system of the fuel cell case described in any one of the above. Wherein, the fuel cell system in this embodiment may refer to a proton exchange membrane fuel cell system.

[0065] Preferably, the fuel cell system of this embodiment also includes a control system 9, and a hydrogen concentration sensor 8, a humidity sensor 10, and a temperature sensor 11 arranged in the fuel cell case 7, and the control system 9 acquires the hydrogen concentration in real time The sensor 8, the humidity sensor 10, and the temperature sensor 11 collect data, and control the airflow driving device 2 and the heating device 3 according to the collected data. In this e...

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Abstract

The invention relates to the field of ventilation design of fuel cells, in particular to a ventilation system of a fuel cell box, a fuel cell system and a vehicle, the ventilation system comprises a waterproof ventilation device, an airflow driving device and a heating device; the airflow driving device is respectively connected with the waterproof ventilation device and the heating device, and the heating device is connected with an air inlet of a fuel cell box body. The waterproof and breathable units are matched with the airflow circulation area and the airflow sealing area, the effect that the waterproof and breathable units are connected in parallel is achieved, and the problems of condensation effect, dilution of trace leaked reaction gas and the like are solved; the dustproof and waterproof functions are realized; and the air permeability is good.

Description

technical field [0001] The invention relates to the field of fuel cell ventilation design, in particular to a fuel cell box ventilation system, a fuel cell system and a vehicle. Background technique [0002] The fuel cell stack is composed of several monolithic units, and its normal operation requires dry, clean and insulated environmental conditions. In order to ensure the working environment of the fuel cell stack, the fuel cell stack is placed in a closed box (referred to as the fuel cell box) in the design, and the waterproof, dustproof, and insulation requirements of the box are guaranteed through the design. During the working process of the fuel cell system, a small amount of reactive gas will inevitably leak from the sealing interface of the stacked units of the fuel cell stack. If the leaked reactive gas cannot be discharged from the fuel cell box in time, it will accumulate in the fuel cell box and accumulate to There is a risk of explosion at certain concentratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0662H01M8/04298H01M8/04089H01M8/04007
CPCH01M8/0662H01M8/04298H01M8/04097H01M8/04007H01M2250/20Y02E60/50
Inventor 丁铁新闪念方川
Owner BEIJING SINOHYTEC
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