CN215600413U - Electric pile insulation packaging structure - Google Patents
Electric pile insulation packaging structure Download PDFInfo
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- CN215600413U CN215600413U CN202121903249.5U CN202121903249U CN215600413U CN 215600413 U CN215600413 U CN 215600413U CN 202121903249 U CN202121903249 U CN 202121903249U CN 215600413 U CN215600413 U CN 215600413U
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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 discloses an electric pile insulation packaging structure, which comprises a bipolar plate, a membrane electrode, and a current collecting plate, an insulation plate and a metal end plate which are respectively arranged at two ends of an electric pile formed by the bipolar plate and the membrane electrode, wherein an insulation end used for a medium to enter and exit the electric pile is arranged on the metal end plate at any end of the electric pile, an end through hole is arranged on the metal end plate, one part of the insulation end is embedded into the end through hole of the corresponding metal end plate and is fixedly connected with the metal end plate, the embedded part of the insulation end penetrates through the end through hole, and the end surface of the insulation end is hermetically connected with the corresponding insulation plate. According to the utility model, through the embedded design between the insulating end head and the metal end plate and the insulating plate arranged between the metal end plate and the current collecting plate, the metal end plate can be completely separated from the medium and the bipolar plate, so that the true insulation of the stack is realized under the condition of ensuring the packaging strength of the stack, and the assembly performance and the assembly strength of the stack are improved.
Description
Technical Field
The utility model belongs to the technical field of fuel cells, and particularly relates to an electric pile insulation packaging structure.
Background
The fuel cell stack is used as a core component of a fuel cell system, and the packaging mode of the fuel cell stack has great influence on the structure and the performance of the system. The operating voltage of the fuel cell system is higher than the safe voltage of a human body, and the vehicle has higher requirements on the insulation of the fuel cell system, so the insulation of the stack packaging is very important. The existing galvanic pile packaging technology adopts metal connection, the galvanic pile insulation performance is poor, and when the galvanic pile packaging technology is installed on a system, an insulation design needs to be independently made, so that the structure is complex and the assembly strength is influenced. The vehicle must encounter the problem of jolt or vibration during the driving process, and the strength of the fuel cell system structure, particularly the mounting structure of the electric pile, is very important.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: aiming at the existing problems, the galvanic pile insulation packaging structure has good insulation performance, can solve the conductive problem between the galvanic pile and a system, and improves the assembly performance and the assembly strength of the galvanic pile.
The technical scheme adopted by the utility model is as follows: the utility model provides an electric pile insulation packaging structure, includes bipolar plate and membrane electrode and at collector plate, insulation board and the metal end plate that electric pile both ends that bipolar plate and membrane electrode constitute set up respectively, its characterized in that: the metal end plate at any end of the galvanic pile is provided with an insulating end head for medium to enter and exit the galvanic pile, the metal end plate is provided with an end head through hole, one part of the insulating end head is embedded into the end head through hole corresponding to the metal end plate and is fixedly connected with the metal end plate, the embedded part of the insulating end head penetrates through the end head through hole, and the end surface of the insulating end head is hermetically connected with the corresponding insulating plate.
According to the electric pile insulation packaging structure, the insulation end head is made of insulation materials, the insulation end head is fixed on the corresponding metal end plate through bolts, and the insulation end head is provided with a channel for reactants, reaction products and cooling liquid to enter and exit the electric pile and completely separates the reactants, the reaction products and the cooling liquid from the metal end plate.
According to the galvanic pile insulation packaging structure, the insulation plates at two ends of the galvanic pile are respectively arranged between the metal end plate at the corresponding end and the current collecting plate and used for separating the metal end plate from the current collecting plate, a sealing groove is formed in the end face, contacting the insulation plate with the insulation end and the corresponding current collecting plate, of the insulation plate at one end provided with the insulation end, a sealing groove is formed in the end face, contacting the insulation plate with the current collecting plate, of the other end of the galvanic pile, and a sealing ring is embedded in each sealing groove.
The utility model relates to an electric pile insulation packaging structure, wherein a channel for reactants, reaction products and cooling liquid to enter and exit an electric pile is arranged on an insulation plate arranged at one end of an insulation end head, and the aperture of the channel arranged on the insulation plate is consistent with that of the channel arranged on the insulation end head.
According to the galvanic pile insulation packaging structure, the current collecting plates at two ends of the galvanic pile are respectively used for collecting electrons released by reaction, and the tabs are arranged on the current collecting plates and used for leading out current.
The utility model relates to an electric pile insulation packaging structure, wherein a plurality of counter-pulling holes are respectively arranged on metal end plates at two ends of an electric pile and an insulation plate, a plurality of counter-pulling screws are arranged between the metal end plates at the two ends of the electric pile, two ends of each counter-pulling screw respectively penetrate through the insulation plate to be connected with the corresponding counter-pulling holes on the metal end plates, and the metal end plates at the two ends of the electric pile are tightly pressed at two ends of a bipolar plate and a membrane electrode.
Compared with the prior art, the utility model can completely separate the metal end plate from the medium and the bipolar plate by the embedded design between the insulating end head and the metal end plate and the insulating plate arranged between the metal end plate and the current collecting plate, realizes the real insulation of the galvanic pile under the condition of ensuring the packaging strength of the galvanic pile, can directly fix the metal end plate in the system when the galvanic pile is arranged in a fuel cell system, adopts rigid connection, improves the reliability and the safety of the system structure, does not need to separately consider the insulating design, greatly improves the assembly strength and simplifies the assembly steps and parts.
Drawings
The utility model will be described by way of specific embodiments and with reference to the accompanying drawings, in which
Fig. 1 is a schematic structural view of the present invention.
The labels in the figure are: 1 is an insulating end, 2 is an upper metal end plate, 3 is an upper insulating plate, 4 is an upper current collecting plate, 5 is a bipolar plate and a membrane electrode, 6 is a lower current collecting plate, 7 is a lower insulating plate, 8 is a lower metal end plate, 9 is a counter-pull screw rod, and 21 is an end through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.
As shown in fig. 1, an insulation package structure of a stack comprises a bipolar plate and a membrane electrode 5, and an upper current collecting plate 4, a lower current collecting plate 6, an upper insulating plate 3, a lower insulating plate 7, an upper metal end plate 2 and a lower metal end plate 8 which are arranged at two ends of the stack formed by the bipolar plate and the membrane electrode 5, wherein the upper current collecting plate 4 is used for collecting electrons released by a reaction and is provided with a tab for leading out a current, the lower current collecting plate 6 is used for collecting electrons released by the reaction and is provided with a tab for leading out a current, an insulation end 1 for leading in and out a medium from the stack is arranged on the upper metal end plate 2, an end through hole 21 is arranged on the upper metal end plate 2, a part of the insulation end 1 is embedded into the end through hole 21 of the upper metal end plate 2 and is fixedly connected with the upper metal end plate 2, and an embedded part of the insulation end 1 passes through the end through hole 21, the end surface of the insulating plate is hermetically connected with the upper insulating plate 3.
According to the utility model, the independently arranged insulating end is adopted, and the insulating end and the upper metal end plate are designed in an embedded structure, so that the sealing part can be designed between the end surface of the insulating end and the end surface of the upper insulating plate, a more reliable sealing effect is formed, the wall surface sealing in the end through hole of the upper metal end plate is effectively avoided, and the upper insulating plate can be designed to have a certain thickness, so that the strength of an insulating part can be ensured to the maximum extent; in addition, the insulating end head for the reactant, the reaction product and the cooling liquid to enter and exit is designed independently, the requirement on the precision of the design position of the end head through hole on the upper metal end plate is low, and the rapid assembly of the insulating end head is facilitated.
The upper insulating plate 3 is made of insulating material and is arranged between the upper metal end plate 2 and the upper current collecting plate 4 to separate the upper metal end plate 2 from the upper current collecting plate 4, a sealing groove is arranged on the end face of the upper insulating plate 3, which is in contact with the insulating end 1 and the upper current collecting plate 4, and a sealing ring or sealant is embedded in the sealing groove to prevent the medium from leaking outside; the lower insulating plate 7 is made of insulating materials and is arranged between the lower metal end plate 8 and the lower flow collecting plate 6 and used for separating the lower metal end plate 8 from the lower flow collecting plate 6, a sealing groove is formed in the end face, in contact with the lower flow collecting plate 6, of the lower insulating plate 7, and a sealing ring or a sealing glue is embedded in the sealing groove and used for preventing the medium from leaking outside.
Specifically, the insulating end 1 is made of an insulating material, the insulating end 1 is fixed on the upper metal end plate 2 through bolts, the insulating end 1 is provided with channels for reactants, reaction products and cooling liquid to enter and exit the galvanic pile, and the reactants, the reaction products and the cooling liquid are completely separated from the upper metal end plate 2, so that the upper metal end plate 2 is not contacted with the reactants, the cooling liquid and the reaction products, and insulation is achieved; the upper insulating plate 3 is provided with channels for reactants, reaction products and cooling liquid to enter and exit the galvanic pile, and in order to ensure that pressure is not lost due to changes of the cross section of a pipeline before a medium enters the galvanic pile, the pore diameter of the channel arranged on the upper insulating plate 3 is consistent with that of the channel arranged on the insulating end 1, so that the condition of reducing caused by a step structure in a medium flow channel is avoided.
In this embodiment, a plurality of opposite-pulling holes are respectively formed in the upper metal end plate 2, the lower metal end plate 8, the upper insulating plate 3 and the lower insulating plate 7, a plurality of opposite-pulling screws 9 are arranged between the upper metal end plate 2 and the lower metal end plate 8, two ends of each opposite-pulling screw 9 respectively penetrate through the holes of the upper insulating plate 3 and the lower insulating plate 7 and are connected with the corresponding opposite-pulling holes in the upper metal end plate 2 and the lower metal end plate 8, and the upper metal end plate 2 and the lower metal end plate 8 are tightly pressed at two ends of the bipolar plate and the membrane electrode 5.
The utility model is not limited to the specific embodiments described above, but extends to any novel feature or any novel combination of features disclosed herein, or to any novel method or process steps, or any novel combination of steps, which are disclosed.
Claims (6)
1. The utility model provides an electric pile insulation packaging structure, includes bipolar plate and membrane electrode (5) and at collector plate, insulation board and the metal end plate that electric pile both ends that bipolar plate and membrane electrode (5) constitute set up respectively, its characterized in that: the metal end plate of any end of the galvanic pile is provided with an insulating end head (1) used for medium to enter and exit the galvanic pile, an end head through hole (21) is formed in the metal end plate, one part of the insulating end head (1) is embedded into the end head through hole (21) of the corresponding metal end plate and is fixedly connected with the metal end plate, the embedded part of the insulating end head (1) penetrates through the end head through hole (21), and the end face of the insulating end head is connected with the corresponding insulating plate in a sealing mode.
2. The stack insulation package structure according to claim 1, wherein: the insulating end (1) is made of insulating materials, the insulating end (1) is fixed on the corresponding metal end plate through bolts, and the insulating end (1) is provided with channels for reactants, reaction products and cooling liquid to enter and exit the galvanic pile and completely separates the reactants, the reaction products and the cooling liquid from the metal end plate.
3. The stack insulation package structure according to claim 2, wherein: the insulation board at pile both ends sets up respectively between corresponding end metal end plate and current collector for separate metal end plate and current collector, in the one end that sets up insulating end (1), its insulation board is provided with the seal groove respectively on the terminal surface with insulating end (1) and corresponding current collector contact the other end of pile, be provided with the seal groove on the terminal surface of insulation board and current collector contact all inlay in the seal groove and be equipped with the sealing washer.
4. The stack insulation package structure according to claim 2, wherein: the insulating plate at one end of the insulating end (1) is provided with a channel for the reactants, the reaction products and the cooling liquid to enter and exit the galvanic pile, and the aperture of the channel arranged on the insulating plate is consistent with that of the channel arranged on the insulating end (1).
5. The stack insulation package structure according to claim 1, wherein: the current collecting plates at two ends of the galvanic pile are respectively used for collecting electrons released by reaction, and tabs are arranged on the current collecting plates and used for leading out current.
6. The stack insulation packaging structure according to any one of claims 1 to 5, wherein: the metal end plates at the two ends of the galvanic pile and the insulating plates are respectively provided with a plurality of counter-pulling holes, a plurality of counter-pulling screws (9) are arranged between the metal end plates at the two ends of the galvanic pile, the two ends of each counter-pulling screw (9) respectively penetrate through the insulating plates to be connected with the corresponding counter-pulling holes on the metal end plates, and the metal end plates at the two ends of the galvanic pile are tightly pressed at the two ends of the bipolar plate and the membrane electrode (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121903249.5U CN215600413U (en) | 2021-08-13 | 2021-08-13 | Electric pile insulation packaging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121903249.5U CN215600413U (en) | 2021-08-13 | 2021-08-13 | Electric pile insulation packaging structure |
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| CN215600413U true CN215600413U (en) | 2022-01-21 |
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| CN202121903249.5U Active CN215600413U (en) | 2021-08-13 | 2021-08-13 | Electric pile insulation packaging structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114583234A (en) * | 2022-02-28 | 2022-06-03 | 上海骥翀氢能科技有限公司 | Insulating end plate of fuel cell stack and assembling mode |
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2021
- 2021-08-13 CN CN202121903249.5U patent/CN215600413U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114583234A (en) * | 2022-02-28 | 2022-06-03 | 上海骥翀氢能科技有限公司 | Insulating end plate of fuel cell stack and assembling mode |
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