CN212342672U - Fuel cell stack with compressing structure - Google Patents
Fuel cell stack with compressing structure Download PDFInfo
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- CN212342672U CN212342672U CN202021396385.5U CN202021396385U CN212342672U CN 212342672 U CN212342672 U CN 212342672U CN 202021396385 U CN202021396385 U CN 202021396385U CN 212342672 U CN212342672 U CN 212342672U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model relates to a fuel cell pile with a compression structure, which comprises a pile body, compression end plates respectively arranged at two ends of the pile body, and a plurality of binding bands for fixing the compression end plates at two ends of the pile body; a plurality of grooves are formed in the outer end face of the pressing end plate; the compression end plate comprises a first compression end plate and a second compression end plate; both ends of the outer end face of the first pressing end plate are provided with a first through hole for penetrating an air connector, a second through hole for penetrating a hydrogen connector and a third through hole for penetrating a water path connector; the first through hole, the second through hole and the third through hole which are arranged at the same end of the outer end face of the first pressing end plate are arranged in a triangular shape; the two ends of the first pressing end plate are provided with first end sealing plates, and the two ends of the second pressing end plate are provided with second end sealing plates. The volume energy ratio and the weight energy ratio of the fuel cell stack can be effectively improved.
Description
Technical Field
The utility model belongs to the technical field of fuel cell, especially, relate to a fuel cell pile with sticis structure. The fuel cell stack is provided with a pressing structure, and the volume energy ratio and the weight energy ratio of the fuel cell stack can be effectively improved while the fuel cell stack is well fastened.
Background
In the face of the increasingly strict exhaust emission standards in China and even in the world at present and the future energy crisis, various automobile manufacturers are developing low-emission new energy technologies to adapt to the development trend. The fuel cell is a new energy with better development technical prospect, and is more and more popular and used by people due to the advantages of high energy conversion efficiency, low noise, low carbon, zero emission, flexible and convenient use, low operation temperature, high energy density and the like. A fuel cell stack, referred to as a stack for short, is a device for generating electrical energy by chemical reaction of hydrogen and oxygen. The fuel cell stack is generally fixed by an assembly technique, and the performance and output of the fuel cell stack are affected by the poor fixation or uneven pressing.
Most of the existing assembly fixing structures of the fuel cell galvanic pile are complex, so that the assembly cost of the fuel cell galvanic pile is high, the galvanic pile is low in stability, large in size and lack of industrial design sense, the limitation of future automobiles on space cannot be met, and the performance level parameters such as the energy consumption level, the galvanic pile weight energy ratio and the volume energy ratio are difficult to meet the requirements of various admission thresholds.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fuel cell stack with sticis structure. The fuel cell stack is provided with a pressing structure, and the volume energy ratio and the weight energy ratio of the fuel cell stack can be effectively improved while the fuel cell stack is well fastened.
In order to achieve the above object, an embodiment of the present invention provides a fuel cell stack with a compression structure, including a stack body, compression end plates respectively disposed at two ends of the stack body, and a plurality of straps fixing the compression end plates to the two ends of the stack body; a plurality of grooves for fixing the binding band are formed in the outer end face of the pressing end plate;
the compression end plate comprises a first compression end plate and a second compression end plate; two ends of the outer end face of the first pressing end plate are respectively provided with a first through hole for penetrating an air joint, a second through hole for penetrating a hydrogen joint and a third through hole for penetrating a water path joint, the two first through holes are arranged in a diagonal manner, the two third through holes are arranged in a diagonal manner, and the two second through holes are symmetrically arranged; the first through hole, the second through hole and the third through hole which are arranged at the same end of the outer end face of the first pressing end plate are arranged in a triangular shape, and the first through hole and the third through hole which are arranged at the same end are symmetrically arranged;
the two ends of the first pressing end plate are symmetrically provided with first end sealing plates, and the two ends of the second pressing end plate are symmetrically provided with second end sealing plates.
Further, the aperture of the first through hole is equal to the aperture of the second through hole, and the aperture of the first through hole is larger than the aperture of the third through hole.
Further, a plurality of elastic parts are arranged on the inner side surface of the compression end plate. Set up elastomeric element at the medial surface that sticiss the end plate, can effectively solve because of machining error causes the inside atress of pile uneven, pile local pressure is too big, the great problem of appearance size difference all around, also reduced the requirement to each inside device machining error of pile, the effectual processing cost who reduces each inside part of pile has improved production efficiency.
Further, the compression end plate and the elastic component are integrally arranged. Like this for elastomeric element can satisfy the inside expend with heat and contract with cold's of galvanic pile space demand under the unchangeable condition of assurance galvanic pile overall dimension, has improved the life-span and the performance of galvanic pile.
Further, the elastic component is made of non-metal materials.
Further, the bandage is a steel-plastic belt matched with the pile body.
Further, be provided with the negative pole copper and the positive pole copper that are connected with the wire respectively on one side of pile body, the negative pole copper with the positive pole copper is the diagonal angle setting, just the negative pole copper set up in the side is close to on one of first sticis the end plate, the positive pole copper set up in the side is close to one of second sticis the end plate is served.
Further, the bandage is arranged on the outer end face of the pressing end plate in an annular circumferential direction. The binding band encircles around the outer terminal surface ring of sticising the end plate establishes a week, then is fixed in the recess, can fix the both ends at the pile body with sticising the end plate well to fix the pile body well.
Further, the first head sealing plate is fixed at two ends of the first compression end plate through first bolts; and the second head plate is fixed at two ends of the second pressing end plate through second bolts.
Further, the groove is adapted to the strap. Therefore, the binding belt can be stably fixed in the groove without moving left and right.
Further, the first end sealing plate and the second end sealing plate which are arranged on the same side of the galvanic pile body are symmetrically arranged.
Furthermore, the compression end plate is preferably an aluminum alloy compression end plate or a plastic compression end plate, and the volume energy ratio and the weight energy ratio of the fuel cell stack can be effectively improved while the fuel cell stack is well fastened.
The utility model provides an among the technical scheme, following beneficial effect has: the utility model discloses a fuel cell pile is through setting up the bandage and sticising the end plate, when fastening the fuel cell pile well, can effectively promote the volume energy ratio and the weight energy ratio of fuel cell pile, can effectively keep the pressure distribution and the deformation of each inside part of pile, can measure and test the operation to the pile in a certain time. And, sticising the end plate with the elastic component integration sets up, can effectively solve because of machining error causes the inside atress of pile uneven, pile local pressure is too big, the great problem of overall dimension difference all around, has also reduced the requirement to each device machining error inside the pile, the effectual processing cost who reduces each part inside the pile, has improved production efficiency.
Drawings
Fig. 1 is a schematic diagram of a fuel cell stack with a compression structure according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the inner side of the first compression end plate of fig. 1;
fig. 3 is a schematic structural view of the second compression end plate of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front, back, top and bottom … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The fuel cell is a new energy with better development technical prospect, and is more and more popular and used by people due to the advantages of high energy conversion efficiency, low noise, low carbon, zero emission, flexible and convenient use, low operation temperature, high energy density and the like. A fuel cell stack, referred to as a stack for short, is a device for generating electrical energy by chemical reaction of hydrogen and oxygen. The fuel cell stack is generally fixed by an assembly technique, and the performance and output of the fuel cell stack are affected by the poor fixation or uneven pressing.
Most of the assembly fixed knot of current fuel cell pile constructs comparatively complicacy for the assembly cost of fuel cell pile is higher, and the stability of pile is low, and is bulky, lack the industrial design and feel, can't satisfy the restriction of future car on the space, its energy consumption level, pile weight energy ratio (generally be 0.95KW/KG-1.0KW/KG), performance level parameters such as volume energy ratio (generally about 2.2 KW/L) also hardly satisfy the requirement of various admission thresholds. In addition, due to the problems of uneven stress inside the galvanic pile, overlarge local pressure of the galvanic pile and large peripheral dimension difference caused by machining errors of all parts of the galvanic pile, the requirements on the machining errors of all devices inside the galvanic pile are also improved, the machining cost of all parts inside the galvanic pile is increased, and the production efficiency is reduced. Therefore, it is necessary to provide a fuel cell stack with a compact structure to solve the above technical problems.
As shown in fig. 1, an embodiment of the present invention provides a fuel cell stack with a compression structure, including a stack body 10, compression end plates 20 respectively disposed at two ends of the stack body 10, and a plurality of straps 30 for fixing the compression end plates 20 at two ends of the stack body 10; a plurality of grooves (not shown) for fixing the binding band 30 are arranged on the outer end face of the pressing end plate 20;
the compression end plate 20 comprises a first compression end plate 21 and a second compression end plate 22; two ends of the outer end surface of the first compression end plate 21 are provided with a first through hole 211 for penetrating an air connector (not shown), a second through hole 212 for penetrating a hydrogen connector (not shown), and a third through hole 213 for penetrating a water line connector (not shown) (that is, two ends of the outer end surface of the first compression end plate 21 are provided with a first through hole 211, a second through hole 212, and a third through hole 213), two first through holes 211 are arranged diagonally, two third through holes 213 are arranged diagonally, and two second through holes 212 are arranged symmetrically; the first through hole 211, the second through hole 212, and the third through hole 213 which are arranged at the same end of the outer end surface of the first compression end plate 21 are arranged in a triangular shape, and the first through hole 211 and the third through hole 213 which are arranged at the same end are symmetrically arranged;
first end sealing plates 214 are symmetrically arranged at two ends of the first pressing end plate 21, and second end sealing plates 221 are symmetrically arranged at two ends of the second pressing end plate 22.
Further, the aperture of the first through hole 211 is equal to that of the second through hole 212, and the aperture of the first through hole 211 is larger than that of the third through hole 213.
Further, as shown in fig. 2, in the present embodiment, the inner side surface of the compression end plate 20 is provided with a plurality of elastic members 23. Set up elastomeric element at the medial surface that sticiss the end plate, can effectively solve because of machining error causes the inside atress of pile uneven, pile local pressure is too big, the great problem of appearance size difference all around, also reduced the requirement to each inside device machining error of pile, the effectual processing cost who reduces each inside part of pile has improved production efficiency.
In this embodiment, the pressing end plate 20 is integrated with the elastic member 23. Like this for elastomeric element can satisfy the inside expend with heat and contract with cold's of galvanic pile space demand under the unchangeable condition of assurance galvanic pile overall dimension, has improved the life-span and the performance of galvanic pile.
Further, the elastic member 23 is an elastic member made of a non-metal material. Specifically, in the present embodiment, the elastic member 23 is a rubber elastic member. It is understood that in other embodiments, the elastic member 23 may be made of silicon or plastic with elasticity.
Further, in the present embodiment, the binding band 30 is a steel-plastic band matched with the stack body 10. The binding band 30 is generally formed in accordance with the outer dimensions of the stack body 10, so that the stack body 10 can be better fixed.
Specifically, in this embodiment, a cathode copper plate 11 and an anode copper plate 12 connected to a lead (not shown) are disposed on one side of the stack body 10, the cathode copper plate 11 and the anode copper plate 12 are diagonally disposed, the cathode copper plate 11 is disposed on the side close to one end of the first pressing end plate 21, and the anode copper plate 12 is disposed on the side close to one end of the second pressing end plate 22.
Further, the binding band 30 is circumferentially disposed on the outer end surface of the compression end plate 20 in a ring shape. The binding band encircles around the outer terminal surface ring of sticising the end plate establishes a week, then is fixed in the recess, can fix the both ends at the pile body with sticising the end plate well to fix the pile body well.
Further, the first head plates 214 are fixed to both ends of the first compression end plate 21 by first bolts 215; the second head plate 221 is fixed to both ends of the second compression end plate 22 by second bolts 222.
Further, the groove is adapted to the strap. Therefore, the binding belt can be stably fixed in the groove without moving left and right.
Further, the first head sealing plate 214 and the second head sealing plate 221 which are disposed on the same side of the stack body 10 are symmetrically disposed.
Further, the compression end plate 20 is preferably an aluminum alloy compression end plate or a plastic compression end plate, which can effectively increase the volumetric energy ratio and the gravimetric energy ratio of the fuel cell stack while well fastening the fuel cell stack. Specifically, in this embodiment, the compression end plate 20 is an aluminum alloy compression end plate. It will be appreciated that in other embodiments, the compression end plate 20 may also be a plastic material (e.g., plastic or silicone) compression end plate.
The utility model discloses a fuel cell pile is through setting up the bandage and sticising the end plate, when fastening the fuel cell pile well, can effectively promote the volume energy ratio of fuel cell pile (the volume energy ratio of this application is about 2.5 KW/L) and weight energy ratio (the weight energy ratio of this application is 1.1KW/KG-1.2KW/KG), can effectively keep the pressure distribution and the deformation of inside each part of pile, can measure and test operation the pile in the definite time. And, sticising the end plate with the elastic component integration sets up, can effectively solve because of machining error causes the inside atress of pile uneven, pile local pressure is too big, the great problem of overall dimension difference all around, has also reduced the requirement to each device machining error inside the pile, the effectual processing cost who reduces each part inside the pile, has improved production efficiency.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. A fuel cell stack with a pressing structure is characterized by comprising a stack body, pressing end plates and a plurality of binding bands, wherein the pressing end plates are respectively arranged at two ends of the stack body; a plurality of grooves for fixing the binding band are formed in the outer end face of the pressing end plate;
the compression end plate comprises a first compression end plate and a second compression end plate; two ends of the outer end face of the first pressing end plate are respectively provided with a first through hole for penetrating an air joint, a second through hole for penetrating a hydrogen joint and a third through hole for penetrating a water path joint, the two first through holes are arranged in a diagonal manner, the two third through holes are arranged in a diagonal manner, and the two second through holes are symmetrically arranged; the first through hole, the second through hole and the third through hole which are arranged at the same end of the outer end face of the first pressing end plate are arranged in a triangular shape, and the first through hole and the third through hole which are arranged at the same end are symmetrically arranged;
the two ends of the first pressing end plate are symmetrically provided with first end sealing plates, and the two ends of the second pressing end plate are symmetrically provided with second end sealing plates.
2. The fuel cell stack having a compression structure of claim 1, wherein the first through hole has an aperture equal to that of the second through hole, and the first through hole has an aperture larger than that of the third through hole.
3. The fuel cell stack having a compression structure of claim 1, wherein the inner side of the compression end plate is provided with a plurality of elastic members.
4. The fuel cell stack having a compression structure of claim 3, wherein the compression end plate is integrally provided with the elastic member.
5. The fuel cell stack having a compression structure of claim 4, wherein the elastic member is an elastic member of a non-metallic material; the bandage is a steel-plastic belt matched with the pile body.
6. The fuel cell stack with the pressing structure according to claim 1, wherein a cathode copper plate and an anode copper plate, which are connected to the lead respectively, are provided on one side surface of the stack body, the cathode copper plate and the anode copper plate are diagonally provided, and the cathode copper plate is provided on one end of the side surface close to the first pressing end plate, and the anode copper plate is provided on one end of the side surface close to the second pressing end plate.
7. The fuel cell stack having a compression structure of claim 1, wherein the strap is circumferentially disposed in an annular shape on an outer end face of the compression end plate; the first head plate is fixed at two ends of the first pressing end plate through first bolts; and the second head plate is fixed at two ends of the second pressing end plate through second bolts.
8. The fuel cell stack having a compression structure of claim 1, wherein the groove is adapted to the strap.
9. The fuel cell stack with the compressing structure of claim 1, wherein the first head plate and the second head plate disposed on the same side of the stack body are symmetrically disposed.
10. The fuel cell stack having a compression structure of claim 1, wherein the compression end plate is an aluminum alloy compression end plate or a plastic compression end plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021396385.5U CN212342672U (en) | 2020-07-15 | 2020-07-15 | Fuel cell stack with compressing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021396385.5U CN212342672U (en) | 2020-07-15 | 2020-07-15 | Fuel cell stack with compressing structure |
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| Publication Number | Publication Date |
|---|---|
| CN212342672U true CN212342672U (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021396385.5U Active CN212342672U (en) | 2020-07-15 | 2020-07-15 | Fuel cell stack with compressing structure |
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|---|---|
| CN (1) | CN212342672U (en) |
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- 2020-07-15 CN CN202021396385.5U patent/CN212342672U/en active Active
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