CN113991143A

CN113991143A - Proton exchange membrane fuel cell

Info

Publication number: CN113991143A
Application number: CN202111236907.4A
Authority: CN
Inventors: 李少尉; 郑闻达; 杨柏
Original assignee: Chuangshi Frontier Technology Shanghai Co ltd
Current assignee: Chuangshi Frontier Technology Shanghai Co ltd
Priority date: 2021-10-24
Filing date: 2021-10-24
Publication date: 2022-01-28
Anticipated expiration: 2041-10-24
Also published as: CN113991143B

Abstract

The invention discloses a proton exchange membrane fuel cell in the technical field of proton exchange membrane fuel cells, which comprises a fuel cell stack, wherein the upper end surface and the lower end surface of the fuel cell stack are fixedly connected with end plates, one end surface of each end plate is provided with a plate body, a fan is arranged inside each plate body, and a connecting mechanism is arranged between each fan and each plate body; coupling mechanism is including contact plate one, contact plate two and connecting block, connecting block fixed connection is at the up end of fan, a contact plate fixed connection is at a terminal surface of connecting block, two fixed connection of contact plate are in the inside of plate body, the connecting block slides and pegs graft in the inside of plate body, the mutual contact lock joint between contact plate one and the contact plate two, the installation effectiveness who has comparatively swift, need not carry out other wiring operation to the wiring part among the dismouting process, can improve the maintenance operation of staff to the fan greatly, the line connection is stable safe, and is comparatively practical.

Description

Proton exchange membrane fuel cell

Technical Field

The invention relates to the technical field of proton exchange membrane fuel cells, in particular to a proton exchange membrane fuel cell.

Background

The Proton Exchange Membrane Fuel Cell (PEMFC) is an efficient and clean energy conversion device, and the metal bipolar plate air-cooled fuel cell simplifies the cooling, air supply, humidification and other systems of the traditional fuel cell, greatly reduces the weight of the system and has great application potential in the aspect of portable mobile power sources.

Compared with the chinese patent CN202110116074.1, a proton exchange membrane fuel cell with a cold start system is provided, which has the following contents: the metal bipolar plate is made of 316 steel materials, the fuel cell stack 5 is composed of 38 single cells, and 65 resistance wires 4 are arranged in a crisscross structure. The power of a single resistance wire is 6.5w, the total power is 420w, and the ratio of the diameter of the resistance wire 4 to the minimum value of the size of the cathode air flow channel is 0.5.

The specific heat capacity of the metal bipolar plate is 460J/(kg. K), the galvanic pile is composed of 38 monocells, 65 resistance wires are arranged in a cross structure, one resistance wire is laid in every 7 cathode flow channels transversely in the case of the current, one resistance wire is laid in every 5 cathode flow channels longitudinally, and 6 resistance wires are arranged in the position, close to the end plate, of the bipolar plate in an encrypted mode. The heat dissipation rate of the galvanic pile is 5 percent. The cold start system of the air-cooled metal bipolar plate proton exchange membrane fuel cell is applied, and the temperature after temperature rise is set to be 0 ℃ at the ambient temperature of-40 ℃; after the power is supplied for 3min, the local highest temperature is not more than 10 ℃, the overall temperature rise is relatively uniform, the temperatures of the membrane electrodes of the electric pile are all increased to be more than 0 ℃, the electric pile comprises a cold start system and a proton exchange membrane fuel cell, the cold start system comprises a resistance wire, a first metal filter screen, a second metal filter screen and a preheating power supply, and the proton exchange membrane fuel cell comprises a fan and a fuel cell electric pile; the first metal filter screen, the resistance wire, the second metal filter screen, the preheating power supply and the first metal filter screen are sequentially connected in series to form a closed electric loop. On the basis of the air-cooled metal bipolar plate fuel cell, the fuel cell is preheated at low temperature in a heating mode of laying resistance wires in a cathode flow channel, the metal filter net structure can generate heat when the electric heating wires supply power, heat is provided for preheating the periphery of the galvanic pile, and the galvanic pile is quickly and uniformly heated.

The existing proton exchange membrane fuel cell can use a metal filter screen according to requirements in the using process, and under the condition that the component is used, the component cannot be convenient for a worker to perform subsequent maintenance on the component, so that the operation of the worker is inconvenient, and when the fuel cell is assisted by a fan to work, the fan cannot be well replaced and maintained, so that the connection of a fan circuit is required, and the operation is inconvenient.

Disclosure of Invention

The invention aims to provide a proton exchange membrane fuel cell, which aims to solve the problems that a metal filter screen can be used according to requirements, when the component is used, a worker cannot conveniently perform subsequent maintenance on the component, the operation of the worker is inconvenient, and when the fuel cell is assisted by a fan, the fan cannot be well replaced and maintained, the connection of a fan circuit is required, and the operation is inconvenient.

In order to achieve the purpose, the invention provides the following technical scheme: a proton exchange membrane fuel cell comprises a fuel cell stack, wherein the upper end surface and the lower end surface of the fuel cell stack are fixedly connected with end plates, a plate body is arranged on one end surface of each end plate, a fan is arranged inside each plate body, and a connecting mechanism is arranged between each fan and each plate body;

the connecting mechanism comprises a first contact plate, a second contact plate and a connecting block, the connecting block is fixedly connected to the upper end face of the fan, the first contact plate is fixedly connected to one end face of the connecting block, the second contact plate is fixedly connected to the inside of the plate body, the connecting block is inserted into the plate body in a sliding mode, the first contact plate and the second contact plate are in mutual contact and fastened with each other, electric energy is provided for the fan 6 through the wiring port 8 in the using process, the fan 6 is in contact electrification through the first contact plate 9 and the second contact plate 10, the second contact plate 10 can be directly connected with the wiring port 8 through a channel, a better communication effect is achieved on the fan 6, and in the dismounting process, the wiring part does not need to be subjected to other wiring operation.

Preferably, a first metal filter screen and a second metal filter screen are respectively arranged on two sides of the fuel cell stack, and the second metal filter screen is positioned between the plate body and the fuel cell stack.

Preferably, be provided with installation mechanism between first metal filters and second metal filters and the end plate, installation mechanism is including connecting rod, mounting groove and spiral plate, install mounting panel 16 into the inside of mounting groove 11, the prerequisite will revolve the position that board 12 rotated to corresponding logical groove shape, later just can be smooth install mounting panel 16, after having installed mounting panel 16, alright rotate spiral plate 12, spiral plate 12 can stagger with logical groove shape, and then just can install mounting panel 16 fixedly, have comparatively swift installation effectiveness, and can guarantee the dismouting to first metal filters 3 and second metal filters 4, the maintenance of the follow-up staff of being convenient for to the device, and is comparatively practical.

Preferably, the mounting groove is opened in the inside of end plate, the quantity of connecting rod is two, and it all sets up the inside at the mounting groove.

Preferably, the rotating plate is sleeved at one end of the connecting rod, a damping bearing is arranged between the rotating plate and the connecting rod, and the two connecting rods are arranged horizontally.

Preferably, the equal fixedly connected with mounting panel of the upper and lower terminal surface of first metal filters and second metal filters, mounting panel upper end portion sets up in the inside of mounting groove, and the inside of mounting panel set up with revolve the board and erect the logical groove of cross-section same shape, lead to the groove and revolve the position of board and correspond each other.

Preferably, a screw hole is formed in a corner position of one side face of the end plate, a fixing screw rod penetrates through the plate body and the end plate, and one end of the fixing screw rod is inserted into the screw hole.

Preferably, the number of the fans is a plurality, the fans are arranged in an up-down double row, and the first contact plate and the second contact plate on the fans are electrically connected with the wiring ports.

Compared with the prior art, the invention has the beneficial effects that: the mounting plate is arranged in the mounting groove, the rotary plate is rotated to the position corresponding to the shape of the through groove, the mounting plate can be smoothly mounted, after the mounting plate is mounted, the rotary plate can be rotated, the rotary plate can be staggered with the shape of the through groove, the mounting plate can be fixedly mounted, the mounting efficiency is relatively high, the first metal filter screen and the second metal filter screen can be assembled and disassembled, the device can be conveniently maintained by subsequent workers, the rotary plate is relatively practical, electric energy is supplied to the fan through the wiring port in the using process, the fan is electrified through the contact plate I and the contact plate II, the contact plate II can be directly connected with a wiring port passage, the fan has a relatively good communication effect, in addition, no additional wiring operation is needed to be carried out on the wiring part in the assembling and disassembling process, and the maintenance operation of the worker on the fan can be greatly improved, the line connection is stable and safe and is relatively practical.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a view of the fan and the connection block of the present invention;

FIG. 3 is a combination view of a first contact plate and a second contact plate according to the present invention;

FIG. 4 is a combination view of a fuel cell stack and end plates according to the present invention;

FIG. 5 is a view showing the combination of the mounting groove and the rotary plate according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a fuel cell stack; 2. an end plate; 3. a first metal screen; 4. a second metal screen; 5. a plate body; 6. a fan; 7. connecting blocks; 8. a wiring port; 9. a first contact plate; 10. a second contact plate; 11. mounting grooves; 12. rotating the plate; 13. a connecting rod; 14. fixing the screw rod; 15. a screw hole; 16. and (7) mounting the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a proton exchange membrane fuel cell, which comprises: the fuel cell stack comprises a fuel cell stack 1, wherein end plates 2 are fixedly connected to the upper end face and the lower end face of the fuel cell stack 1, a plate body 5 is arranged on one end face of each end plate 2, a fan 6 is arranged inside each plate body 5, a connecting mechanism is arranged between each fan 6 and each plate body 5, a screw hole 15 is formed in the corner position of one side face of each end plate 2, a fixing screw 14 penetrates through the plate body 5 and each end plate 2, one end of each fixing screw 14 is inserted into each screw hole 15, the fans 6 are arranged in a plurality in an up-down double-row mode, and a first contact plate 9 on each fan 6 and a second contact plate 10 in contact with each other are electrically connected with a wiring port 8;

the connecting mechanism comprises a first contact plate 9, a second contact plate 10 and a connecting block 7, the connecting block 7 is fixedly connected to the upper end face of the fan 6, the first contact plate 9 is fixedly connected to one end face of the connecting block 7, the second contact plate 10 is fixedly connected to the inside of the plate body 5, the connecting block 7 is slidably inserted into the inside of the plate body 5, and the first contact plate 9 and the second contact plate 10 are in mutual contact and fastening.

A first metal filter screen 3 and a second metal filter screen 4 are respectively arranged at two sides of a fuel cell stack 1, the second metal filter screen 4 is positioned between a plate body 5 and the fuel cell stack 1, an installation mechanism is arranged between the first metal filter screen 3 and the end plate 2 and between the second metal filter screen 4 and the end plate 2, the installation mechanism comprises connecting rods 13, installation grooves 11 and rotary plates 12, the installation grooves 11 are arranged in the end plate 2, the number of the connecting rods 13 is two, the connecting rods 13 are all arranged in the installation grooves 11, the rotary plates 12 are sleeved at one end positions of the connecting rods 13, a damping bearing is arranged between the rotary plates 12 and the connecting rods 13, the two connecting rods 13 are arranged in the same level, the upper end surface and the lower end surface of the first metal filter screen 3 and the upper end surface of the second metal filter screen 4 are fixedly connected with installation plates 16, the upper end parts of the installation plates 16 are arranged in the installation grooves 11, and through grooves with the same shape as the vertical cross section of the rotary plates 12 are arranged in the installation plates 16, the through slots and the rotary plate 12 correspond to each other in position.

One specific application of this embodiment is: when the device is used, the first metal filter screen 3 and the second metal filter screen 4 are installed with the fuel cell stack 1, the installation plate 16 is installed in the installation groove 11, the rotary plate 12 is rotated to the position corresponding to the shape of the through groove on the premise that the rotary plate 12 is rotated to the position corresponding to the shape of the through groove, the installation plate 16 can be smoothly installed, after the installation plate 16 is installed, the rotary plate 12 can be rotated, the rotary plate 12 can be staggered with the shape of the through groove, the installation plate 16 can be further installed and fixed, the installation efficiency is relatively rapid, the first metal filter screen 3 and the second metal filter screen 4 can be guaranteed to be disassembled and assembled, the device can be conveniently maintained by subsequent workers, the device is relatively practical, the fan 6 is provided with electric energy through the wiring port 8 in the use process, the fan 6 is electrified through the contact of the first contact plate 9 and the second contact plate 10, and the second contact plate 10 can be directly connected with the wiring port 8 through a path, have better intercommunication effect to fan 6, and the dismouting in-process need not carry out other wiring operation to the wiring part, can improve the maintenance operation of staff to fan 6 greatly, and line connection is stable safe, comparatively practical.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A proton exchange membrane fuel cell comprising a fuel cell stack (1), characterized in that: the fuel cell stack (1) is characterized in that the upper end surface and the lower end surface of the fuel cell stack (1) are fixedly connected with end plates (2), a plate body (5) is arranged on one end surface of each end plate (2), a fan (6) is arranged inside each plate body (5), and a connecting mechanism is arranged between each fan (6) and each plate body (5);

coupling mechanism is including contact plate (9), contact plate two (10) and connecting block (7), connecting block (7) fixed connection is in the up end of fan (6), a terminal surface of contact plate (9) fixed connection at connecting block (7), two (10) fixed connection of contact plate are in the inside of plate body (5), connecting block (7) slide and peg graft in the inside of plate body (5), mutual contact lock joint between contact plate (9) and the contact plate two (10).

2. A proton exchange membrane fuel cell in accordance with claim 1, wherein: the fuel cell stack (1) is characterized in that a first metal filter screen (3) and a second metal filter screen (4) are respectively arranged on two sides of the fuel cell stack (1), and the second metal filter screen (4) is located between the plate body (5) and the fuel cell stack (1).

3. A proton exchange membrane fuel cell in accordance with claim 2, wherein: an installation mechanism is arranged between the first metal filter screen (3) and the end plate (2) and between the second metal filter screen (4), and the installation mechanism comprises a connecting rod (13), an installation groove (11) and a rotating plate (12).

4. A proton exchange membrane fuel cell in accordance with claim 3, wherein: the inside at end plate (2) is seted up in mounting groove (11), the quantity of connecting rod (13) is two, and it all sets up the inside at mounting groove (11).

5. A proton exchange membrane fuel cell in accordance with claim 4, wherein: the rotary plate (12) is sleeved at one end of the connecting rod (13), a damping bearing is arranged between the rotary plate (12) and the connecting rod (13), and the two connecting rods (13) are arranged horizontally.

6. A proton exchange membrane fuel cell in accordance with claim 5, wherein: first metal filters (3) and the equal fixedly connected with mounting panel (16) of upper and lower terminal surface of second metal filters (4), mounting panel (16) upper end portion sets up in the inside of mounting groove (11), and the inside of mounting panel (16) set up with revolve board (12) and erect the logical groove of cross-section looks isoform, lead to the groove and revolve the position of board (12) and correspond each other.

7. A proton exchange membrane fuel cell in accordance with claim 1, wherein: screw holes (15) are formed in corners of one side face of the end plate (2), a fixing screw rod (14) penetrates through the plate body (5) and the end plate (2), and one end of the fixing screw rod (14) is inserted into the screw holes (15).

8. A proton exchange membrane fuel cell in accordance with claim 1, wherein: the number of the fans (6) is a plurality of, the fans are arranged in an upper row and a lower row, and a first contact plate (9) on each fan (6) and a second contact plate (10) in contact with each other are electrically connected with the wiring port (8).