CN214068762U

CN214068762U - Planar membrane humidifier for fuel cell

Info

Publication number: CN214068762U
Application number: CN202022947391.1U
Authority: CN
Inventors: 刘静
Original assignee: Shanghai Chuangyin Energy Technology Co ltd
Current assignee: Shanghai Chuangyin Energy Technology Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-08-27
Anticipated expiration: 2030-12-10

Abstract

The utility model relates to a fuel cell technical field specifically is a be used for fuel cell planar membrane humidifier, including the fuel cell body, the fuel cell body is including defeated hydrogen case, air tank and proton exchange case, and the inside of defeated hydrogen case and air tank all is provided with first feeding spare, and the inside of proton exchange case is provided with second feeding spare, and the hydrogen feed port has been seted up to the inside of first feeding spare, and the middle part of first feeding spare is provided with ventilative section of thick bamboo, and the middle part of second feeding spare is provided with ventilative case, and dry air feed inlet and wet air feed inlet have been seted up to the inside of second feeding spare. The utility model discloses wet air feed inlet of the inside of the last chimney of first feeding piece and second feeding piece can be when to add hydrogen and air wet to can reduce proton conduction resistance, promote the efficiency of electricity generation, dry air feed inlet can promote corresponding velocity of flow and adjust the inside air humidity of proton exchange box, hoisting device's practicality and life-span of using.

Description

Planar membrane humidifier for fuel cell

Technical Field

The utility model relates to a humidifier especially relates to a be used for fuel cell plane membrane humidifier, belongs to fuel cell technical field.

Background

A fuel cell is an electrochemical cell that converts the chemical energy of a fuel and an oxidant into electrical energy through a redox reaction, unlike most cells which require a continuous source of fuel and oxygen to sustain the chemical reaction, and in which the chemical energy is typically derived from metals and their ions or oxides already present in the cell, the fuel cell can continuously generate electricity as long as there is a supply of fuel and oxygen.

At present, the development of fuel cells is going toward the improvement of technology and practical development, taking the development of fuel cell systems for vehicles using air as oxidant as an example, because the oxygen partial pressure in the air is lower and the gas flow rate is higher, the water loss of the proton exchange membrane is more serious, the gas stream must therefore be humidified, and many fuel cells use internal membranes, including proton exchange membranes, for operation in the power generation efficiency range, it is desirable to maintain the membranes in a wet condition, but the humidifying effect is not obvious, only the humidification is carried out on the proton exchange membrane, the humidity in the fuel cell can not be ensured fundamentally, the movement resistance of ions is still large, the utilization rate is reduced, meanwhile, the traditional humidifier is mostly of a fixed structure and cannot be replaced, and once the humidifier is damaged, the whole fuel cell can be discarded, so that certain resource waste can be caused. Accordingly, there is a need for improvements in fuel cell planar membrane humidifiers that address the above-identified problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be used for fuel cell planar membrane humidifier, the wet air feed inlet of the inside of the chimney on the first feeding piece and second feeding piece can be when wetting hydrogen and the air of interpolation to can reduce proton conduction resistance, promote the efficiency of electricity generation, dry air feed inlet can promote corresponding velocity of flow and adjust the inside air humidity of proton exchange box, hoisting device's practicality and life-span of using.

In order to achieve the above object, the utility model discloses a main technical scheme include:

a planar membrane humidifier for a fuel cell comprises a fuel cell body, wherein the fuel cell body comprises a hydrogen conveying box, an air box and a proton exchange box, first feeding pieces are arranged inside the hydrogen conveying box and the air box, second feeding pieces which are symmetrically distributed are arranged inside the proton exchange box, and second feeding pieces which are symmetrically distributed are also arranged on the outer side surface of the proton exchange box;

a hydrogen feeding hole is formed in the first feeding piece, a plurality of water vapor holes which are centrosymmetric are formed in the periphery of the hydrogen feeding hole, the water vapor holes are formed in the first feeding piece, a breathable cylinder is arranged in the middle of the first feeding piece, a plurality of discharge holes which are centrosymmetric are formed in the middle of the breathable cylinder, and the discharge holes are communicated with the hydrogen feeding hole;

the middle part of second feeding spare is provided with ventilative case, a plurality of dry air feed inlet and a plurality of humid air feed inlet have been seted up to the inside of second feeding spare, dry air feed inlet with the setting of crisscross each other of humid air feed inlet.

Preferably, the upper side surface and the lower side surface of the proton exchange box are both fixedly provided with a fixed mounting block, the second feeding piece penetrates through the fixed mounting block and the proton exchange box, and two ends of the second feeding piece extend to the outside of the fixed mounting block.

Preferably, the second feeding piece is provided with symmetrically distributed sealing rubber rings, the sealing rubber rings and the fixed mounting blocks are arranged on the same horizontal axis, two ends of each fixed mounting block are connected with fastening bolts in a screwing mode, and the fastening bolts penetrate through the fixed mounting blocks and are connected with the sealing rubber rings.

Preferably, the first feeding piece is provided with symmetrically distributed external threads, the second feeding piece is internally provided with internal threads corresponding to the external threads, and the internal threads are screwed with the external threads.

Preferably, the dry air feed inlet and the wet air feed inlet are both triangular structures, and both the dry air feed inlet and the wet air feed inlet penetrate through the second feeding piece.

Preferably, the two ends of the first feeding piece are provided with first connectors which are symmetrically distributed, the first connectors protrude out of the outer side surface of the fuel cell body, anti-skid lines are fixedly arranged on the first connectors, and the anti-skid lines are arranged above the external threads.

Preferably, both ends of the second feeding piece are provided with symmetrically distributed second connectors which protrude out of the outer side surface of the fuel cell body, symmetrically distributed handle grooves are formed in the second connectors, and the handle grooves are arranged above the sealing rubber ring.

Preferably, the breathable cylinder is a breathable waterproof cylinder made of TPU thermoplastic polyurethane elastomer rubber, and the breathable box is a breathable waterproof box made of TPU thermoplastic polyurethane elastomer rubber.

The utility model discloses possess following beneficial effect at least:

1. the wet air feed inlet of the inside of a ventilation cylinder and second feeding piece on the first feeding piece can be in the time to add hydrogen and air wet to can reduce proton conduction resistance, promote the efficiency of electricity generation, dry air feed inlet can promote corresponding velocity of flow and adjust the inside air humidity of proton exchange box, hoisting device's practicality and life-span of using.

2. Can cause certain jam when fuel cell body uses for a long time, perhaps because other reasons need maintain fuel cell body when, first feeding piece and second feeding piece can be followed the inside of fuel cell body and taken out, and the convenience that hoisting device used is conveniently cleared up and is changed to can reduce cost of maintenance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a perspective view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a perspective view of the first feeding member of the present invention;

fig. 4 is a perspective view of a second feeding member of the present invention;

fig. 5 is a second feeding member assembling structure diagram of the present invention.

In the figure, 1-fuel cell body, 101-hydrogen conveying tank, 102-air tank, 103-proton exchange tank, 2-first feeding piece, 201-hydrogen feeding hole, 202-water vapor hole, 203-external thread, 204-air permeable cylinder, 205-discharge hole, 206-first connecting head, 3-second feeding piece, 301-dry air feeding hole, 302-wet air feeding hole, 303-air permeable tank, 304-second connecting head, 4-fixed mounting block, 5-fastening bolt, 6-sealing rubber ring, 7-internal thread, 8-anti-skid grain and 9-handle groove.

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

As shown in fig. 1-5, the planar membrane humidifier for a fuel cell provided in this embodiment includes a fuel cell body 1, the fuel cell body 1 includes a hydrogen transport tank 101, an air tank 102, and a proton exchange tank 103, the hydrogen transport tank 101 and the air tank 102 are both provided with a first feeding member 2, the proton exchange tank 103 is provided with a second feeding member 3 symmetrically distributed inside, the outer side of the proton exchange tank 103 is also provided with a second feeding member 3 symmetrically distributed, so as to reduce the humidity of the air around the fuel cell body 1 and improve the service life of the fuel cell body 1, the first feeding member 2 is provided with a hydrogen feeding hole 201 inside, the hydrogen feeding hole 201 is provided with a plurality of water vapor holes 202 symmetrically arranged around the center, the water vapor holes 202 are arranged inside the first feeding member 2, the middle of the first feeding member 2 is provided with a gas permeable cylinder 204, the gas permeable cylinder 204 is a gas permeable water-proof cylinder made of TPU thermoplastic polyurethane elastomer, the device has the advantages that moisture can be prevented from entering through water vapor, the practicability of the device is improved, the middle part of the ventilation cylinder 204 is provided with the plurality of discharge holes 205 which are centrosymmetric, the discharge holes 205 are communicated with the hydrogen feed hole 201, hydrogen is input through the hydrogen feed hole 201 on the first feed part 2, wet air is introduced through the water vapor hole 202 on the first feed part 2, the hydrogen enters the hydrogen conveying box 101 through the discharge holes 205, meanwhile, the water vapor is diffused inside the hydrogen conveying box 101 through the ventilation cylinder 204, so that the hydrogen is wetted, the proton conduction resistance can be reduced, the power generation efficiency is improved, and meanwhile, the service life of the device can be prolonged;

the middle part of the second feeding piece 3 is provided with a ventilation box 303, the ventilation box 303 is a ventilation waterproof box made of TPU thermoplastic polyurethane elastomer rubber, the inside of the second feeding piece 3 is provided with a dry air feed port 301 and a plurality of wet air feed ports 302, the dry air feed port 301 and the wet air feed ports 302 are arranged in a staggered manner, the contact area between the second feeding piece 3 and the proton exchange box 103 is increased, the dry air feed port 301 and the wet air feed port 302 are both in a triangular structure, the dry air feed port 301 and the wet air feed port 302 both penetrate through the second feeding piece 3, the proton exchange box 103 in the fuel cell body 1 can be chemically changed, the positive ions of hydrogen and the negative ions of oxygen react, the wet air feed port 302 on the second feeding piece 3 can convey wet steam, the steam is diffused into the proton exchange box 103 through the ventilation box 303, and further the steam concentration in the proton exchange box 103 can be increased, and then can reduce the ionic movement resistance, promote the efficiency of electricity generation, because the device uses the life that can make whole device seriously reduce in oxygen boosting and moist environment often time simultaneously, consequently dry air feed inlet 301 can promote corresponding velocity of flow and adjust the inside air humidity of proton exchange box 103, takes out steam under the condition that does not influence certain humidity, can play the purpose of drainage simultaneously, hoisting device's practicality.

In this embodiment, as shown in fig. 5, the upper and lower sides of the proton exchange box 103 are both fixedly provided with the fixed mounting block 4, the second feeding member 3 penetrates through the fixed mounting block 4 and the proton exchange box 103, both ends of the second feeding member 3 extend to the outside of the fixed mounting block 4, the second feeding member 3 is provided with the symmetrically distributed sealing rubber rings 6, the sealing rubber rings 6 and the fixed mounting block 4 are on the same horizontal axis, both ends of the fixed mounting block 4 are screwed with the fastening bolts 5, the fastening bolts 5 penetrate through the fixed mounting block 4 and are connected with the sealing rubber rings 6, so as to avoid that the input hydrogen or air is directly dispersed into the air to cause waste of resources, and meanwhile, the fixed mounting block 4 fastens and compresses the sealing rubber rings 6 through the fastening bolts 5, so as to improve the sealing performance of the whole device, because the density of hydrogen is smaller than that of air, therefore, a certain sealing effect is achieved, and hydrogen overflow is prevented, so that resource waste is caused.

In this embodiment, as shown in fig. 2 and fig. 3, the first feeding member 2 is provided with symmetrically distributed external threads 203, the second feeding member 3 is provided with internal threads 7 corresponding to the external threads 203 inside, the internal threads 7 are screwed with the external threads 203, the two ends of the first feeding member 2 are provided with symmetrically distributed first connection heads 206, the first connection heads 206 protrude out of the outer side of the fuel cell body 1, the first connection heads 206 are fixedly provided with anti-slip threads 8, the anti-slip threads 8 are arranged above the external threads 203, the first feeding member 2 can be screwed out of the fuel cell body 1 through the anti-slip threads 8 on the external threads 203, a certain blockage can be caused when the first feeding member 2 is used for a long time, or when the fuel cell body 1 needs to be maintained due to other reasons, the first feeding member 2 can be directly taken out, thereby improving the convenience of the device, meanwhile, the maintenance in the later period is convenient.

In this embodiment, as shown in fig. 4, the two ends of the second feeding member 3 are provided with the symmetrically distributed second connectors 304, the second connectors 304 protrude out of the outer side surface of the fuel cell body 1, the symmetrically distributed handle grooves 9 are formed in the second connectors 304, the handle grooves 9 are arranged above the sealing rubber ring 6, the fastening bolts 5 on the fixed mounting block 4 are rotated anticlockwise, the sealing rubber ring 6 is separated from the fixed mounting block 4, the second feeding member 3 is taken out, the cleaning and the replacement are convenient, the use is convenient, and therefore the maintenance cost can be reduced.

As shown in fig. 1 to 5, the principle of the planar membrane humidifier for a fuel cell provided in the present embodiment is as follows:

hydrogen is input through a hydrogen feeding hole 201 on a first feeding part 2, wet air is introduced through a steam hole 202 on the first feeding part 2, the hydrogen enters a hydrogen conveying box 101 through a discharge hole 205, meanwhile, steam is diffused inside the hydrogen conveying box 101 through a ventilating barrel 204, so that the hydrogen is wetted, proton conduction resistance can be reduced, the power generation efficiency is improved, and the service life of the device can be prolonged, a ventilating box 303 is arranged in the middle of a second feeding part 3, the ventilating box 303 is a ventilating waterproof box made of TPU thermoplastic polyurethane elastomer rubber, a dry air feeding hole 301 and a plurality of wet air feeding holes 302 are formed in the second feeding part 3, the dry air feeding hole 301 and the wet air feeding holes 302 are arranged in a staggered mode, the contact area between the second feeding part 3 and the proton exchange box 103 is improved, and the dry air feeding hole 301 and the wet air feeding holes 302 are both in a triangular structure, the dry air inlet 301 and the wet air inlet 302 both penetrate through the second feed member 3, the proton exchange box 103 inside the fuel cell body 1 is chemically changed, the positive ions of hydrogen and the negative ions of oxygen react, the wet air inlet 302 on the second feed member 3 can input wet water vapor, the water vapor is diffused to the inside of the proton exchange box 103 through the ventilation box 303, thereby increasing the concentration of the water vapor in the proton exchange box 103, reducing the movement resistance of ions, improving the power generation efficiency, meanwhile, the service life of the whole device is seriously reduced because the device is used in an oxygen-rich and humid environment for a long time, therefore, the dry air inlet 301 can promote the corresponding flow velocity to adjust the air humidity inside the proton exchange box 103, and the water vapor is extracted under the condition of not influencing certain humidity, so that the practicability of the device is improved.

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to achieve the technical effect basically.

It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or system in which the element is included.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A planar membrane humidifier for a fuel cell comprises a fuel cell body (1), and is characterized in that the fuel cell body (1) comprises a hydrogen conveying tank (101), an air tank (102) and a proton exchange tank (103), wherein first feeding pieces (2) are arranged inside the hydrogen conveying tank (101) and the air tank (102), second feeding pieces (3) which are symmetrically distributed are arranged inside the proton exchange tank (103), and second feeding pieces (3) which are symmetrically distributed are also arranged on the outer side surface of the proton exchange tank (103);

a hydrogen feeding hole (201) is formed in the first feeding piece (2), a plurality of water vapor holes (202) which are centrosymmetric are formed in the periphery of the hydrogen feeding hole (201), the water vapor holes (202) are formed in the first feeding piece (2), a breathable cylinder (204) is arranged in the middle of the first feeding piece (2), a plurality of discharge holes (205) which are centrosymmetric are formed in the middle of the breathable cylinder (204), and the discharge holes (205) are communicated with the hydrogen feeding hole (201);

the middle part of second feeding piece (3) is provided with ventilative case (303), a plurality of dry air feed inlet (301) and a plurality of humid air feed inlet (302) have been seted up to the inside of second feeding piece (3), dry air feed inlet (301) with humid air feed inlet (302) crisscross setting each other.

2. A planar membrane humidifier for a fuel cell according to claim 1, wherein: the proton exchange box is characterized in that the upper side surface and the lower side surface of the proton exchange box (103) are fixedly provided with fixed mounting blocks (4), the second feeding piece (3) penetrates through the fixed mounting blocks (4) and the proton exchange box (103), and two ends of the second feeding piece (3) extend to the outside of the fixed mounting blocks (4).

3. A planar membrane humidifier for a fuel cell according to claim 2, wherein: be provided with symmetric distribution's sealing rubber circle (6) on second feeding piece (3), sealing rubber circle (6) with fixed mounting piece (4) are on same horizontal axis, the both ends of fixed mounting piece (4) close soon and are connected with fastening bolt (5), fastening bolt (5) run through fixed mounting piece (4) and with sealing rubber circle (6) are connected.

4. A planar membrane humidifier for a fuel cell according to claim 1, wherein: be provided with symmetric distribution's external screw thread (203) on first feeding piece (2), the inside of second feeding piece (3) be provided with internal thread (7) that external screw thread (203) correspond, internal thread (7) with external screw thread (203) are through the screw thread closure connection.

5. A planar membrane humidifier for a fuel cell according to claim 1, wherein: the dry air feed inlet (301) with wet air feed inlet (302) are the triangle-shaped structure, dry air feed inlet (301) with wet air feed inlet (302) all run through second feeding piece (3).

6. A planar membrane humidifier for a fuel cell according to claim 4, wherein: the two ends of the first feeding piece (2) are provided with first connectors (206) which are symmetrically distributed, the first connectors (206) protrude out of the outer side face of the fuel cell body (1), anti-skid lines (8) are fixedly arranged on the first connectors (206), and the anti-skid lines (8) are arranged above the external threads (203).

7. A planar membrane humidifier for a fuel cell according to claim 3, wherein: the both ends of second feeding piece (3) are provided with symmetric distribution second connector (304), second connector (304) protrusion in the lateral surface of fuel cell body (1), be provided with symmetric distribution's handle groove (9) on second connector (304), handle groove (9) set up the top of sealing rubber circle (6).

8. A planar membrane humidifier for a fuel cell according to claim 1, wherein: the breathable barrel (204) is a breathable waterproof barrel made of TPU thermoplastic polyurethane elastomer rubber, and the breathable box (303) is a breathable waterproof box made of TPU thermoplastic polyurethane elastomer rubber.