CN-224217479-U - Humidifier for hydrogen fuel cell

CN224217479UCN 224217479 UCN224217479 UCN 224217479UCN-224217479-U

Abstract

The utility model relates to the field of hydrogen fuel cells, in particular to a hydrogen fuel cell humidifier, which comprises a core shell, an air inlet shell cover positioned at the lower part of the core shell and an air outlet shell cover positioned at the upper part of the core shell, wherein the air inlet shell cover is provided with a dry gas inlet, the air outlet shell cover is provided with a dry gas outlet, a hollow fiber membrane core is arranged in the core shell, the core shell is provided with a wet gas outlet and a wet gas inlet, an independent closed bypass pipeline is arranged in the core shell, the dry gas outlet is in sealed communication with the input end of the bypass pipeline, the air outlet shell cover is provided with a bypass pipeline outlet, and the output end of the bypass pipeline is in sealed connection with the bypass pipeline outlet, so that part of dry gas input by the dry gas inlet is independently output to the bypass pipeline outlet through the bypass pipeline. This patent optimizes the bypass line inside the humidifier, has reduced the occupied volume of bypass way greatly, has reduced installation pipeline and design interface, promotes humidifier stability, has good effect in the aspect such as accurate control humidity.

Inventors

HUA ZHOUFA
LI XU
JIN JIE
GUO WU
ZHU YAZHOU

Assignees

魔方氢能源科技(江苏)有限公司

Dates

Publication Date: 20260508
Application Date: 20250417

Claims (9)

1. The utility model provides a hydrogen fuel cell humidifier, includes the core shell, and is located the air inlet cap of core shell lower part and is located the gas outlet cap of core shell upper portion, the air inlet cap is provided with the dry gas entry, the gas outlet cap is provided with the dry gas export, core shell internally mounted has hollow fiber membrane core, and the core shell is provided with moisture export and moisture entry, its characterized in that: The inside of the core shell is provided with an independent closed bypass pipeline, the dry gas outlet is communicated with the input end of the bypass pipeline in a sealing way, the air outlet shell cover is provided with a bypass pipeline outlet, and the output end of the bypass pipeline is connected with the bypass pipeline outlet in a sealing way, so that part of dry gas input by the dry gas inlet is independently output to the bypass pipeline outlet through the bypass pipeline.
2. The hydrogen fuel cell humidifier of claim 1 wherein the bypass line is co-current with the direction of dry gas flow.
3. The hydrogen fuel cell humidifier of claim 1, wherein the bypass line is provided at a corner of one side of the interior of the core housing.
4. The hydrogen fuel cell humidifier of claim 3 wherein the bypass line shares a portion of the tube wall with the core housing.
5. The hydrogen fuel cell humidifier of claim 1 wherein the core housing is coupled to the inlet housing cover and/or the outlet housing cover via a flange structure.
6. The hydrogen fuel cell humidifier of claim 1, wherein the core housing is coupled to both the inlet housing cover and the outlet housing cover via a flange structure.
7. The hydrogen fuel cell humidifier of claim 1, wherein the outlet housing cover has a separate upper bypass connection port for sealingly connecting to a bypass line.
8. The hydrogen fuel cell humidifier according to any one of claims 1-7, wherein the outlet of the bypass passage is externally connected with a flow regulating valve for regulating the flow of gas.
9. The hydrogen fuel cell humidifier according to any one of claims 1-7, wherein a baffle is provided at the moisture inlet for preventing moisture from directly striking membrane filaments of the hollow fiber membrane core.

Description

Humidifier for hydrogen fuel cell Technical Field The utility model relates to the field of hydrogen fuel cells, in particular to a humidifier of a hydrogen fuel cell. Background The hydrogen fuel cell humidifier is key auxiliary equipment in the hydrogen fuel cell system, and mainly plays roles in maintaining the performance of a proton exchange membrane, protecting a cell assembly and optimizing reaction conditions in the operation process, and generally consists of the proton exchange membrane, a dry gas inlet, a dry gas outlet, a wet gas inlet and a wet gas outlet. The fuel cell system is typically designed with humidifier bypass lines, typically consisting of plumbing, valves, and associated connecting components. The pipeline is used for guiding the air flow to bypass the humidifier, and the valve is used for controlling the opening degree of the bypass pipeline so as to adjust the flow of the bypass air flow. The bypass pipeline mainly has two functions, namely 1) when the humidifier fails and needs maintenance or does not need full-load work of the humidifier under certain specific working conditions, the bypass pipeline can be opened to enable air flow to bypass the humidifier and directly enter a subsequent system, normal operation of the system is guaranteed, and interruption of the whole flow caused by the problem of the humidifier is avoided, and 2) the humidity of output air flow can be finely regulated through mixing of the bypass pipeline and the air flow at the outlet of the humidifier, so that the accurate requirements of different technologies on the humidity are met. However, the presence of the bypass line increases the complexity of the hydrogen fuel cell system, and has higher requirements on the allocation and utilization of the reserved space of the fuel cell, and increases the difficulty in designing and installing the system, which may also lead to a decrease in the reliability of the system. More components and connection points mean more potential failure points, and once a component in the bypass line fails, such as a valve leak, a pipe blockage, etc., normal operation of the entire fuel cell system may be affected, increasing maintenance costs and maintenance workload of the system. Disclosure of utility model In order to solve the problems, the utility model provides the humidifier for the hydrogen fuel cell, which greatly reduces the occupied volume of the bypass passage, reduces the mounting pipelines and design interfaces, and has good effects on the aspects of improving the stability of the humidifier, accurately controlling the humidity and the like. In order to achieve the above purpose, the utility model adopts the following technical scheme: A hydrogen fuel cell humidifier comprises a core shell, an air inlet shell cover arranged at the lower part of the core shell and an air outlet shell cover arranged at the upper part of the core shell, wherein the air inlet shell cover is provided with a dry gas inlet, the air outlet shell cover is provided with a dry gas outlet, a hollow fiber membrane core is arranged in the core shell, the core shell is provided with a wet gas outlet and a wet gas inlet, The inside of the core shell is provided with an independent closed bypass pipeline, the dry gas outlet is communicated with the input end of the bypass pipeline in a sealing way, the air outlet shell cover is provided with a bypass pipeline outlet, and the output end of the bypass pipeline is connected with the bypass pipeline outlet in a sealing way, so that part of dry gas input by the dry gas inlet is independently output to the bypass pipeline outlet through the bypass pipeline. Preferably, the bypass line is disposed in the same direction as the dry gas flow direction. Preferably, the bypass line is disposed at a corner of one side of the inside of the core case. Preferably, the bypass line shares a portion of the tube wall with the core housing. Preferably, the core shell is connected with the air inlet shell cover and/or the air outlet shell cover through a flange structure. Preferably, the core shell is connected with the air inlet shell cover and the air outlet shell cover through flange structures. Preferably, the air outlet cover has a separate upper bypass connection opening in the interior for the sealed connection of the bypass line. Preferably, the outlet of the bypass passage is externally connected with a flow regulating valve for regulating and controlling the gas flow. Preferably, a baffle is provided at the moisture inlet for preventing moisture from directly striking the membrane filaments of the hollow fiber membrane core. The beneficial effects of using the utility model are as follows: This patent optimizes the bypass line inside the humidifier, has reduced the occupied volume of bypass way greatly, has reduced installation pipeline and design interface, promotes humidifier stability, has good effect in the aspect such as accurate control humidity. Draw