CN215184101U - Nested insulating end plate of liquid-cooled fuel cell - Google Patents
Nested insulating end plate of liquid-cooled fuel cell Download PDFInfo
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- CN215184101U CN215184101U CN202121247631.5U CN202121247631U CN215184101U CN 215184101 U CN215184101 U CN 215184101U CN 202121247631 U CN202121247631 U CN 202121247631U CN 215184101 U CN215184101 U CN 215184101U
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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
- Y02E60/10—Energy storage using batteries
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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 an insulating end plate of nested formula of liquid-cooled fuel cell, the both ends of end plate are nested respectively has first insulation bush and second insulation bush, set up hydrogen inlet groove, coolant liquid outlet groove and air outlet groove in the first insulation bush, set up air inlet groove, coolant liquid inlet groove and hydrogen outlet groove in the second insulation bush. The utility model discloses can effectively avoid fuel cell heavy current during operation to influence dielectric strength, make fuel cell operation safety and stability more. Meanwhile, the pressure drop of the inlet and outlet of the hydrogen, the air and the cooling liquid can be reduced, the power generation efficiency of the fuel cell stack can be improved in an auxiliary mode, the power consumption required by the stack can be reduced, and the stability and the reliability of the performance of the fuel cell can be improved in an auxiliary mode.
Description
Technical Field
The utility model relates to a fuel cell technical field, concretely relates to nested formula insulating end plate of liquid cooling fuel cell.
Background
The hydrogen fuel cell is a new renewable clean energy source, is a power generation device which directly outputs electric energy through electrochemical reaction without combustion, and has the advantages of high efficiency, no noise, cleanness, no pollution and the like. With the rapid development of the new energy automobile industry and the inclination of policies of countries all over the world, the fuel cells for power in the transportation field occupy higher and higher proportions, and the development of the liquid-cooled fuel cells can meet the industrial requirements of the new energy automobile and the requirements of large power stations, and represents the mainstream direction of the technical development of the fuel cells.
The liquid-cooled fuel cell puts forward higher requirements on the stability and the safety of the fuel cell under the working environment of high current and high voltage, so that the end plate is used as a main component of the fuel cell, and the end plate is properly improved in terms of weight, volume, dielectric strength and pressure drop resistance through structural optimization, so that the power generation efficiency of the fuel cell is improved in an auxiliary mode, the power consumption is reduced, and the safe and stable operation of the fuel cell is guaranteed to be very important for the liquid-cooled fuel cell, but the current fuel cell end plate cannot well meet the requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a liquid cooling fuel cell nested insulating end plate with low cost and safe operation in order to overcome the defects existing in the prior art.
In order to achieve the purpose of the present invention, the present application provides the following technical solutions.
In a first aspect, the present application provides a nested insulating end plate for a liquid-cooled fuel cell, one end of the end plate is provided with a hydrogen inlet, a coolant outlet and an air outlet in sequence, the other end of the end plate is provided with an air inlet, a coolant inlet and a hydrogen outlet in sequence, the two ends of the end plate are respectively nested with a first insulating bush and a second insulating bush, a hydrogen inlet groove, a coolant outlet groove and an air outlet groove are arranged in the first insulating bush, an air inlet groove, a coolant inlet groove and a hydrogen outlet groove are arranged in the second insulating bush, the hydrogen inlet groove corresponds to the hydrogen inlet on the end plate, the coolant outlet groove corresponds to the coolant outlet on the end plate, the air outlet groove corresponds to the air outlet on the end plate, the air inlet groove corresponds to the air inlet on the end plate, the coolant inlet groove corresponds to the coolant inlet on the end plate, the hydrogen outlet groove corresponds to a hydrogen outlet on the end plate. By nesting the metal end plate and the nonmetal insulating material, the safe power utilization requirement of the whole fuel cell cannot be guaranteed in the large-current voltage operation process, and the influence of the dielectric strength is effectively reduced.
In an embodiment of the first aspect, the hydrogen inlet tank is a square sink tank, and a strip-shaped reinforcing rib is arranged in the square sink tank; one end of the cooling liquid outlet groove and one end of the air outlet groove are square, the other end of the cooling liquid outlet groove and the other end of the air outlet groove are round, and the inner section of the cooling liquid outlet groove and the inner section of the air outlet groove are trumpet-shaped.
In an embodiment of the first aspect, the air inlet groove is a square sink groove, a bar-shaped reinforcing rib is arranged in the square sink groove, one end of the coolant inlet groove and one end of the hydrogen outlet groove are square, the other end of the coolant inlet groove and the other end of the hydrogen outlet groove are circular, and the inner section of the coolant inlet groove is horn-shaped. The two arrangements can effectively avoid the phenomenon of gas leakage caused by overlarge pressure difference between the inlet and the outlet, reduce the resistance of the cooling liquid, assist in improving the power generation efficiency of the fuel cell, reduce the power consumption and ensure the safe and stable operation of the fuel cell.
In one embodiment of the first aspect, the air inlet, the coolant inlet and the hydrogen outlet are at different distances from the edge of the end plate; the distances from the hydrogen inlet, the cooling liquid outlet and the air outlet to the edge of the end plate are different. The arrangement can avoid interference generated in the process of connecting pipelines of the inlets and the outlets under the condition of not increasing the length and the width of the end plate.
In one embodiment of the first aspect, the hydrogen inlet slots on the first insulating liner are larger in size than the hydrogen outlet slots on the second insulating liner; the size of the cooling liquid outlet groove on the first insulating bush is larger than that of the cooling liquid inlet groove on the second insulating bush; the size of the air outlet slots on the first insulating sleeve is larger than the size of the air inlet slots on the second insulating sleeve. The gas leakage phenomenon caused by overlarge pressure difference between the inlet and the outlet can be effectively avoided by the arrangement, the resistance of the cooling liquid is reduced, the power generation efficiency of the fuel cell is improved in an auxiliary mode, the power consumption is reduced, and the safe and stable operation of the fuel cell is ensured.
In an implementation mode of the first aspect, the end plate is made of metal, the first insulating bush and the second insulating bush are made of nonmetal, the end plate is formed in a numerical control machining mode, and the first insulating bush and the second insulating bush are formed in an injection molding mode, so that the weight and the size of the end plate are effectively reduced, and the cost is reduced.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the insulating end plate structure provided by the application is a metal and nonmetal insulating material nested assembly and is prepared in a numerical control machine processing and injection molding mode. By adopting the structure, the weight and the volume of the end plate are effectively reduced, and the cost is reduced.
(2) By nesting metal and nonmetal insulating materials, the safe power utilization requirement of the whole fuel cell cannot be guaranteed in the large-current voltage operation process, and the influence of the dielectric strength is effectively reduced.
(3) Through adjusting and improving import and export the size, set up hydrogen inlet groove, coolant liquid export groove and air outlet groove on the first insulating bush and all be greater than hydrogen outlet groove, coolant liquid inlet groove and air inlet groove on the second insulating bush, effectively avoid importing and exporting the too big phenomenon that produces gas and leak of pressure differential, reduce the coolant liquid resistance, supplementary promotion fuel cell's generating efficiency, the reduction consumption guarantees fuel cell's safety and stability operation.
(4) Through adjusting and improving the groove shape of importing and exporting, first insulation bush sets up air outlet groove and coolant liquid outlet groove and passes through to the round hole by square groove, and the section shape is the horn mouth. The second insulation bush is provided with an air inlet groove and a cooling liquid inlet groove which are transited to the round hole from the square groove, and the section shape is a horn mouth. The gas leakage phenomenon caused by overlarge pressure difference between the inlet and the outlet is effectively avoided, the resistance of the cooling liquid is reduced, the power generation efficiency of the fuel cell is improved in an auxiliary mode, the power consumption is reduced, and the safe and stable operation of the fuel cell is ensured.
Drawings
FIG. 1 is a schematic front view of an end plate according to the present application;
FIG. 2 is a schematic view of the back side of the end plate of the present application;
FIG. 3 is a perspective view of an end plate nested insulation bushing component of the present application;
FIG. 4 is a perspective view of the end plate of the present application showing the back side of the nested assembly;
fig. 5 is a front perspective view of the end plate nesting assembly of the present application.
In the drawing, 1 is a hydrogen inlet, 2 is a coolant outlet, 3 is an air outlet, 4 is a hydrogen outlet, 5 is a coolant inlet, 6 is an air inlet, 7 is an outer positioning groove, 8 is an inner positioning hole, 9 is a first insulating bush, 91 is a hydrogen inlet groove, 92 is a coolant outlet groove, 93 is an air outlet groove, 94 is a first bush groove, 10 is a second insulating bush, 101 is an air inlet groove, 102 is a coolant inlet groove, 103 is a hydrogen outlet groove, and 104 is a second bush groove.
Detailed Description
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as is understood by those of ordinary skill in the art to which the invention belongs. All numerical values recited herein as between the lowest value and the highest value are intended to mean all values between the lowest value and the highest value in increments of one unit when there is more than two units difference between the lowest value and the highest value.
In the following description of the embodiments of the present invention, it is noted that in the detailed description of the embodiments, all the features of the actual embodiments may not be described in detail in order to make the description concise and concise. Modifications and substitutions may be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the invention, and the resulting embodiments are within the scope of the invention.
The end plate is one of the main components of the hydrogen fuel cell, the traditional fuel cell end plate has the functions of packaging, fixing the fuel cell stack, providing the cathode and the anode and a cooling liquid inlet and outlet, sealing and the like, and achieves the insulation purpose through an insulating plate, but the insulating effect and the sealing performance are not ideal for the high-power liquid cooling fuel cell, particularly the insulating effect at the cathode and the anode of the end plate and the cooling liquid inlet and outlet is poor, and the electricity utilization safety is not high. An object of the application provides a nested formula insulation end plate structure of liquid-cooled fuel cell, through rationally setting up end plate hydrogen, the air, coolant liquid access & exit structure and distribution can reduce end plate weight and volume, the effective control pile pressure drop, promote fuel cell pile generating efficiency, reduce the required consumption of pile, guarantee fuel cell operation safety and stability, make it at the heavy current, guarantee its dielectric strength in the operation process of high voltage, through actual operation test, the performance is better.
In order to achieve the technical purpose, the invention adopts the following technical scheme: the utility model provides a nested formula insulating end plate structure of liquid-cooled fuel cell, is including lieing in one end is provided with hydrogen entry, coolant liquid export and air outlet on the insulating end plate the other end on the insulating end plate is provided with hydrogen export, coolant liquid entry and air inlet.
Preferably, the hydrogen inlet on the end plate is located above the coolant outlet and the air outlet, and the hydrogen outlet is located below the coolant inlet and the air inlet.
Preferably, the hydrogen inlet, the cooling liquid outlet and the air outlet at one end of the insulating end plate are not on the same vertical line, and the hydrogen outlet, the cooling liquid inlet and the air inlet at the other end of the insulating end plate are not on the same vertical line, so that interference generated in the process of connecting pipelines by the outlets and the inlets is avoided under the condition of not increasing the length and the width of the end plate.
Preferably, the insulating end plate is provided with a first bushing groove and a second bushing groove, and the first insulating bushing and the second insulating bushing are embedded in the grooves, so that the insulativity is enhanced, and the dielectric strength is ensured. Wherein the first insulating liner is provided with a hydrogen inlet groove, a cooling liquid outlet groove and an air outlet groove which are all larger than those in the second insulating liner.
Preferably, first insulation bush is provided with hydrogen inlet tank, coolant liquid export groove and air outlet groove, and wherein the hydrogen inlet tank is square heavy groove, sets up the bar strengthening rib in the heavy groove, and air outlet groove and coolant liquid export groove pass through to the round hole by the square groove, and the section shape is the horn mouth.
Preferably, the second insulation bush is provided with air inlet groove, coolant liquid inlet groove, hydrogen export groove, and wherein the hydrogen export groove is square heavy groove, sets up the bar strengthening rib in the heavy groove, and air inlet groove and coolant liquid inlet groove pass through to the round hole by the square groove, and the section shape is the horn mouth.
Examples
The embodiments of the present invention will be described in detail below, and the embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The nested insulating end plate of the liquid cooling fuel cell is structurally shown in figures 1-5 and comprises an end plate and two insulating bushes, and the nested insulating end plate comprises the following specific components:
the end plate is provided with a hydrogen inlet 1, a cooling liquid outlet 2 and an air outlet 3, the other end of the end plate is provided with a hydrogen outlet 4, a cooling liquid inlet 5 and an air inlet 6, and the end plate is characterized in that two ends of the end plate are respectively nested with a first insulating bush 9 and a second insulating bush 10, the first insulating bush 9 is arranged in the first bush groove 94, and the second insulating bush 10 is arranged in the second bush groove 104. Effectively avoiding the problems of poor insulation effect and low power consumption safety.
The liquid-cooled fuel cell nested type insulating end plate structure is formed by nesting metal and non-metal insulating materials and is prepared by numerical control machine processing and injection molding, compared with a simple method of using a metal or insulating plastic material, the liquid-cooled fuel cell nested type insulating end plate structure can meet the strength requirement, and the insulating property is better.
Nested first insulation bush 9 sets up hydrogen inlet groove 91, coolant liquid export groove 92 and air outlet groove 93 in the end plate structure, effectively avoids imports and exports the pressure differential too big, reduces the coolant liquid resistance, and the supplementary generating efficiency who promotes fuel cell reduces the consumption, guarantees fuel cell's safety and stability operation.
The second insulating lining 10 nested in the end plate structure is provided with a hydrogen outlet groove 103, a cooling liquid inlet groove 102 and an air inlet groove 101, so that the phenomenon that the pressure difference between an inlet and an outlet is too large is effectively avoided, the resistance of cooling liquid is reduced, the power generation efficiency of the fuel cell is improved in an auxiliary mode, the power consumption is reduced, and the safe and stable operation of the fuel cell is ensured.
Set up hydrogen inlet groove 91, coolant liquid export groove 92 and air outlet groove 93 on the first insulating bush 9 in the end plate structure and all be greater than on the second insulating bush 10 hydrogen export groove 103, coolant liquid inlet groove 102 and air inlet groove 101, effectively avoid exit pressure differential too big, reduce the coolant liquid resistance, supplementary promotion fuel cell's generating efficiency, reduce the consumption, guarantee fuel cell's safety and stability operation.
Through adjusting and improving hydrogen, air, liquid cooling import and export the groove shape in the end plate structure, first insulation bush 9 sets up air outlet groove 93 and coolant liquid outlet groove 92 and passes through to the round hole by the square groove, and the section shape is the horn mouth. The second insulating bush 10 is provided with an air inlet groove 101 and a cooling liquid inlet groove 102, and is transited to a round hole through a square groove, the section shape is a horn mouth, the too large pressure difference between an inlet and an outlet is effectively avoided, the resistance of cooling liquid is reduced, the power generation efficiency of the fuel cell is improved in an auxiliary mode, the power consumption is reduced, and the safe and stable operation of the fuel cell is guaranteed.
In the end plate structure, the hydrogen inlet 1, the cooling liquid outlet 2 and the air outlet 3 at one end are not on the same vertical line, and the hydrogen outlet 4, the air inlet 6 and the cooling liquid inlet 5 at the other end are also not on the same vertical line, so that the interference of the inlets and the outlets in the process of connecting pipelines is avoided under the condition of not increasing the length and the width of the end plate, and the end plate is smaller.
Through setting up outer constant head tank 7 and interior locating hole 8 among the end plate structure, make fuel cell compacter, the installation accuracy is higher.
The embodiments described above are intended to facilitate the understanding and appreciation of the application by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present application is not limited to the embodiments herein, and those skilled in the art who have the benefit of this disclosure will appreciate that many modifications and variations are possible within the scope of the present application without departing from the scope and spirit of the present application.
Claims (6)
1. The nested insulating end plate of liquid-cooled fuel cell, the one end of end plate is equipped with hydrogen entry, coolant liquid export and air outlet in proper order, the other end of end plate is equipped with air inlet, coolant liquid entry and hydrogen outlet in proper order, its characterized in that, the both ends of end plate are nested respectively has first insulating bush and second insulating bush, set up hydrogen inlet groove, coolant liquid export groove and air export groove in the first insulating bush, set up air inlet groove, coolant liquid inlet groove and hydrogen export groove in the second insulating bush, the hydrogen inlet groove with the hydrogen entry on the end plate corresponds, coolant liquid export groove with coolant liquid export on the end plate corresponds, air export groove with the air outlet on the end plate corresponds, the air inlet groove with the air entry on the end plate corresponds, the coolant liquid inlet groove with the coolant liquid entry on the end plate corresponds, the hydrogen outlet groove corresponds to a hydrogen outlet on the end plate.
2. The liquid-cooled fuel cell nested end plate of claim 1, wherein the hydrogen inlet channel is a square sink channel with bar-shaped ribs disposed therein; one end of the cooling liquid outlet groove and one end of the air outlet groove are square, the other end of the cooling liquid outlet groove and the other end of the air outlet groove are round, and the inner section of the cooling liquid outlet groove and the inner section of the air outlet groove are trumpet-shaped.
3. The nested insulating end plate of a liquid-cooled fuel cell of claim 1, wherein the air inlet channel is a square sink channel with bar-shaped ribs disposed therein, and wherein the coolant inlet channel and the hydrogen outlet channel have a square shape at one end and a circular shape at the other end and a trumpet-shaped internal cross-section.
4. The liquid-cooled fuel cell nested insulating end plate of claim 1, wherein the end plate has different distances from the air inlet, the coolant inlet, and the hydrogen outlet to the edge of the end plate; the distances from the hydrogen inlet, the cooling liquid outlet and the air outlet to the edge of the end plate are different.
5. The nested insulating end plate of a liquid-cooled fuel cell of claim 1, wherein the size of the hydrogen inlet slot in the first insulating liner is larger than the size of the hydrogen outlet slot in the second insulating liner; the size of the cooling liquid outlet groove on the first insulating bush is larger than that of the cooling liquid inlet groove on the second insulating bush; the size of the air outlet slots on the first insulating sleeve is larger than the size of the air inlet slots on the second insulating sleeve.
6. The nested insulating end plate of a liquid cooled fuel cell of claim 1, wherein the end plate is made of metal, the first insulating bushing and the second insulating bushing are made of non-metal, the end plate is formed by means of numerical control machining, and the first insulating bushing and the second insulating bushing are formed by means of injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121247631.5U CN215184101U (en) | 2021-06-04 | 2021-06-04 | Nested insulating end plate of liquid-cooled fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121247631.5U CN215184101U (en) | 2021-06-04 | 2021-06-04 | Nested insulating end plate of liquid-cooled fuel cell |
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| CN215184101U true CN215184101U (en) | 2021-12-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114497671A (en) * | 2022-01-11 | 2022-05-13 | 佛山仙湖实验室 | Manifold structure of fuel cell stack |
| 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 |
-
2021
- 2021-06-04 CN CN202121247631.5U patent/CN215184101U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114497671A (en) * | 2022-01-11 | 2022-05-13 | 佛山仙湖实验室 | Manifold structure of fuel cell stack |
| CN114497671B (en) * | 2022-01-11 | 2023-10-31 | 佛山仙湖实验室 | Fuel cell stack manifold structure |
| 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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