CN210926175U

CN210926175U - Fuel cell

Info

Publication number: CN210926175U
Application number: CN201922261758.1U
Authority: CN
Inventors: 郝振宇; 角谷聪; 龚正伟; 靳少辉; 薛阳
Original assignee: Weishi Energy Technology Co Ltd
Current assignee: Weishi Energy Technology Co Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-07-03
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses a fuel cell. The fuel cell includes: a first fastening plate and a second fastening plate; a stack disposed between the first fastening plate and the second fastening plate, and an edge of the stack is provided with a plurality of impact notches that are open; and the impact resisting elements stop against the corresponding impact resisting gaps from the open positions of the impact resisting gaps, one ends of the impact resisting elements are fixed on the first fastening plate, and the other ends of the impact resisting elements are fixed on the second fastening plate. According to the utility model discloses a fuel cell ends the breach department of shocking resistance at stack edge through the anti impact element to promote fuel cell's shock resistance and vibration resistance, and then be favorable to promoting fuel cell's security performance.

Description

Fuel cell

Technical Field

The utility model relates to an electrochemical cell field particularly, relates to a fuel cell.

Background

The fuel cell is provided with a stacked body formed by stacking a polar plate and a membrane electrode assembly according to a certain sequence, the stacked body easily generates dislocation of the polar plate and the membrane electrode assembly when being impacted or vibrated from the outside, and then the fuel cell leaks gas, and a great potential safety hazard exists in severe cases, so that the problem that how to improve the shock resistance and the vibration resistance of the fuel cell needs to be solved urgently is solved.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a fuel cell to improve the shock resistance and vibration resistance of the fuel cell.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a fuel cell is provided. The fuel cell includes: a first fastening plate and a second fastening plate; a stack disposed between the first fastening plate and the second fastening plate, and an edge of the stack is provided with a plurality of impact notches that are open; and the impact resisting elements stop against the corresponding impact resisting gaps from the open positions of the impact resisting gaps, one ends of the impact resisting elements are fixed on the first fastening plate, and the other ends of the impact resisting elements are fixed on the second fastening plate.

According to some embodiments of the invention, the first fastening plate and the second fastening plate are provided on opposite surfaces with impact-resistant positioning grooves adapted to fix the impact-resistant element.

Furthermore, the impact-resistant positioning groove is a blind groove, and the end part of the impact-resistant element is embedded in the impact-resistant positioning groove.

Furthermore, the anti-impact positioning groove is a through groove, the end part of the anti-impact element is provided with threads, and the end part of the anti-impact element penetrates through the anti-impact positioning groove and then is screwed with the positioning nut.

According to some embodiments of the utility model, first mounting plate with still be provided with the coaxial fastening screw through-hole of multiunit on the second mounting plate, fastening screw is suitable for and wears to establish first mounting plate with on the second mounting plate screw is screwed with fastening nut behind the fastening screw through-hole.

Further, the fastening screw is plural, and the fastening screw is located at the periphery of the impact-resistant element.

According to some embodiments of the invention, the stack has a plurality of sides, two adjacent sides between which the impact-resistant notch is formed, the impact-resistant element is at least three the impact-resistant notch, and three the impact-resistant notch is located at the three apex of the triangle.

According to some embodiments of the invention, each of the impact-resistant indentations has a first and a second indentation surface perpendicular to each other, the impact-resistant element has a first and a second positioning surface perpendicular to each other, the first positioning surface is adapted to abut against the positioning with the first indentation surface, the second positioning surface is adapted to abut against the positioning with the second indentation surface.

According to some embodiments of the invention, the stack comprises: the membrane electrode assembly comprises polar plates and membrane electrode assemblies, wherein the polar plates and the membrane electrode assemblies are stacked alternately.

Further, stack positioning grooves adapted to position the stack are provided on opposite surfaces of the first fastening plate and the second fastening plate.

Compared with the prior art, the fuel cell of the utility model has the following advantages:

according to the utility model discloses a fuel cell ends the breach department of shocking resistance at stack edge through the anti impact element to promote fuel cell's shock resistance and vibration resistance, and then be favorable to promoting fuel cell's security performance.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a front view of a fuel cell;

fig. 2 is an exploded view of a fuel cell;

FIG. 3 is a schematic view of the assembly of the impact-resistant element with the stack;

FIG. 4 is a perspective view of a second fastening plate;

FIG. 5 is a schematic view of a stack;

fig. 6 is a cross-sectional view of the impact-resistant element and the stack at a-a.

Description of reference numerals:

the first fastening plate 1, the second fastening plate 2, the impact-resistant positioning groove 21, the fastening screw through hole 22, the stacked body positioning groove 23, the stacked body 3, the impact-resistant notch 31, the first notch surface 311, the second notch surface 312, the pole plate 32, the membrane electrode assembly 33, the sealing gasket 34, the upper end plate 35, the lower end plate 36, the impact-resistant element 4, the first positioning surface 41, the second positioning surface 42, the fastening screw 5 and the fastening nut 6.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The fuel cell of the present invention will be described in detail with reference to fig. 1 to 6 in conjunction with the embodiment.

Referring to fig. 1 to 4, a fuel cell according to an embodiment of the present invention includes: a first fastening plate 1, a second fastening plate 2, a stack 3, a plurality of impact-resistant elements 4.

The stacked body 3 is arranged between the first fastening plate 1 and the second fastening plate 2, the edge of the stacked body 3 is provided with a plurality of open impact-resisting gaps 31, a plurality of impact-resisting elements 4 are abutted against the corresponding impact-resisting gaps 31 from the open positions of the impact-resisting gaps 31, one end of each impact-resisting element 4 is fixed to the first fastening plate 1, the other end of each impact-resisting element 4 is fixed to the second fastening plate 2, namely, two ends of each impact-resisting element 4 are fixedly connected with the first fastening plate 1 and the second fastening plate 2 respectively, the stacked body 3 is clamped between the first fastening plate 1 and the second fastening plate 2, each impact-resisting element 4 is abutted against the impact-resisting gaps 31 on the side edge of the stacked body 3, and the impact-resisting elements 4 can effectively prevent the stacked body 3 from being misplaced due to external impact or vibration and prevent potential safety hazards such as gas leakage of a fuel.

According to the utility model discloses a fuel cell, through impact resistance element 4 end to the breach 31 department of shocking resistance at 3 edges of pile body to promote fuel cell's shock resistance and vibration resistance, and then be favorable to promoting fuel cell's security performance.

Referring to fig. 2 and 4, impact-resistant positioning grooves 21 adapted to fix the impact-resistant members 4 are provided on opposite surfaces of the first and second fastening plates 1 and 2.

Specifically, one end of the impact-resistant element 4 is fixed in the impact-resistant positioning groove 21 of the first fastening plate 1, and the other end of the impact-resistant element 4 is fixed in the impact-resistant positioning groove 21 of the second fastening plate 2, so that the impact-resistant element 4 is fixedly connected with the first fastening plate 1 and the second fastening plate 2.

Referring to the embodiment shown in fig. 2 and 4, the impact-resistant positioning groove 21 is a blind groove, and the end of the impact-resistant element 4 is embedded in the impact-resistant positioning groove 21, and preferably, the end of the impact-resistant element 4 is in interference fit with the impact-resistant positioning groove 21, so as to facilitate the improvement of the connection fastening degree of the impact-resistant element 4 and the first fastening plate 1 and the second fastening plate 2, reduce the shaking of the impact-resistant element 4 when being impacted or vibrated by the outside, and further facilitate the reduction of the risk of dislocation of the stacked body 3.

In other embodiments of the present invention (not shown in the figure), the impact-resistant positioning groove 21 is a through groove, the end of the impact-resistant element 4 is provided with a thread, and the end of the impact-resistant element 4 is screwed with the positioning nut after passing through the impact-resistant positioning groove 21, so as to facilitate the assembly of the impact-resistant element 4 with the first fastening plate 1 and the second fastening plate 2, and the fastening degree of the impact-resistant element 4 with the first fastening plate 1 and the second fastening plate 2 can be adjusted by adjusting the torque of the positioning nut.

Referring to fig. 1 and 2, a plurality of sets of coaxial fastening screw through holes 22 are further disposed on the first fastening plate 1 and the second fastening plate 2, the fastening screws 5 are adapted to penetrate through the fastening screw through holes 22 on the first fastening plate 1 and the second fastening plate 2 and then screwed with the fastening nuts 6 to increase the connection rigidity of the first fastening plate 1 and the second fastening plate 2, during external impact or vibration, the relative displacement between the first fastening plate 1 and the second fastening plate 2 is reduced, and meanwhile, after the fastening screws 5 are screwed with the fastening nuts 6, the first fastening plate 1 and the second fastening plate 2 can clamp the stacked body 3, thereby facilitating the improvement of the impact resistance and vibration resistance of the stacked body 3.

Referring to fig. 1 and 2, the fastening screw 5 is plural, and the fastening screw 5 is located at the periphery of the impact resistance member 4 to further increase the coupling rigidity of the first fastening plate 1 and the second fastening plate 2, maintaining the accuracy of the positional accuracy of the impact resistance member 4 upon external impact or vibration.

Referring to fig. 2 and 3, the stack 3 has a plurality of sides, an impact-resistant notch 31 is formed between two adjacent sides, the impact-resistant elements 4 are located at least at three impact-resistant notches 31, and the three impact-resistant notches 31 are located at three vertices of a triangle, that is, the stack 3 can be restrained and reinforced by three impact-resistant elements 4 respectively abutting at three non-collinear impact-resistant notches 31, so as to facilitate the improvement of the impact resistance and vibration resistance of the stack 3.

Referring to fig. 6, each of the impact-resistant notches 31 has a first notch face 311 and a second notch face 312 perpendicular to each other, the impact-resistant member 4 has a first positioning face 41 and a second positioning face 42 perpendicular to each other, the impact-resistant notch 31 and the impact-resistant member 4 are simple in structure and have low requirements on manufacturing accuracy, thereby facilitating mass production and manufacturing, the first positioning face 41 is adapted to be positioned in abutment with the first notch face 311, the second positioning face 42 is adapted to be positioned in abutment with the second notch face 312, and when the stacked body 3 has a tendency of misalignment due to external impact or vibration, the first positioning face 41 may provide a shearing force against the tendency of misalignment to the first notch face 311, and the second positioning face 42 may provide a shearing force against the tendency of misalignment to the second notch face 312, thereby preventing misalignment of the stacked body 3.

Referring to fig. 5, the stack 3 includes: the electrode plates 32 and the Membrane electrode assemblies 33 (i.e., MEAs), and the electrode plates 32 and the Membrane electrode assemblies 33 are alternately stacked.

Specifically, a sealing gasket 34 is further disposed between the electrode plate 32 and the membrane electrode assembly 33, a plurality of sets of alternately stacked electrode plates 32 and membrane electrode assemblies 33 may be disposed in the stack 3, each set is stacked in the order of the electrode plate 32, the sealing gasket 34, the membrane electrode assembly 33, the sealing gasket 34, and the electrode plate 32, and the stack 3 further includes: an upper end plate 35 and a lower end plate 36, the upper end plate 35 being located at the upper end of the stack 3, the upper end plate 35 being spaced apart from the alternately stacked plates 32 and membrane electrode assemblies 33 by a gasket 34, the lower end plate 36 being located at the lower end of the stack 3, the lower end plate 36 being spaced apart from the alternately stacked plates 32 and membrane electrode assemblies 33 by the gasket 34. It should be noted that the plate 32 may be a bipolar plate.

In some embodiments of the present invention, the opposite surfaces of the first fastening plate 1 and the second fastening plate 2 are provided with the stack positioning groove 23 adapted to position the stack 3, as shown in fig. 4, the orientation of the second fastening plate 2 is provided with the stack positioning groove 23 on the surface of the first fastening plate 1, thereby facilitating the assembly of the stack 3 with the first fastening plate 1 and the second fastening plate 2, further facilitating the reinforcement effect of the first fastening plate 1 and the second fastening plate 2 on the stack 3, and improving the shock resistance and the shock resistance of the stack 3, optionally, the depth of the stack 3 positioning groove is smaller than the depth of the shock resistance positioning groove 21.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuel cell, comprising:

a first fastening plate (1) and a second fastening plate (2);

a stack (3), said stack (3) being arranged between said first fastening plate (1) and said second fastening plate (2), and the edges of said stack (3) being provided with a plurality of impact notches (31) that are open;

a plurality of impact-resistant elements (4), wherein the impact-resistant elements (4) stop against the corresponding impact-resistant notches (31) from the open positions of the impact-resistant notches (31), one ends of the impact-resistant elements (4) are fixed on the first fastening plate (1), and the other ends of the impact-resistant elements (4) are fixed on the second fastening plate (2).

2. A fuel cell according to claim 1, characterized in that the opposite surfaces of the first fastening plate (1) and the second fastening plate (2) are provided with impact-resistant location grooves (21) adapted to fix the impact-resistant elements (4).

3. A fuel cell according to claim 2, wherein the impact-resistant positioning groove (21) is a blind groove, and an end of the impact-resistant element (4) is embedded in the impact-resistant positioning groove (21).

4. The fuel cell according to claim 2, characterized in that the impact-resistant positioning slot (21) is a through slot, the end of the impact-resistant element (4) is provided with a thread, and the end of the impact-resistant element (4) is screwed with a positioning nut after passing through the impact-resistant positioning slot (21).

5. The fuel cell of claim 1, wherein a plurality of sets of coaxial fastening screw through holes (22) are further formed in the first fastening plate (1) and the second fastening plate (2), and the fastening screws (5) are adapted to be inserted into the fastening screw through holes (22) formed in the first fastening plate (1) and the second fastening plate (2) and then screwed with the fastening nuts (6).

6. A fuel cell according to claim 5, wherein the fastening screw (5) is plural, and the fastening screw (5) is located at the periphery of the impact-resistant member (4).

7. A fuel cell according to claim 1, characterized in that said stack (3) has a plurality of sides, between two adjacent sides said impact-resistant notches (31) are formed, said impact-resistant elements (4) being located at least at three said impact-resistant notches (31), and three said impact-resistant notches (31) being located at three vertices of a triangle.

8. A fuel cell according to claim 1, wherein each of said impact-resistant indentations (31) has a first (311) and a second (312) indentation surface perpendicular to each other, said impact-resistant element (4) having a first (41) and a second (42) positioning surface perpendicular to each other, said first positioning surface (41) being adapted to be positioned in abutment with said first indentation surface (311), said second positioning surface (42) being adapted to be positioned in abutment with said second indentation surface (312).

9. A fuel cell according to claim 1, characterized in that said stack (3) comprises: a plate (32) and a membrane electrode assembly (33), the plate (32) and the membrane electrode assembly (33) being alternately stacked.

10. A fuel cell according to claim 2, characterized in that the opposite surfaces of the first fastening plate (1) and the second fastening plate (2) are provided with stack positioning grooves (23) adapted to position the stack (3).