CN212136607U

CN212136607U - Integrated heat insulation end plate of fuel cell

Info

Publication number: CN212136607U
Application number: CN202020797690.9U
Authority: CN
Inventors: 付宇; 王道新
Original assignee: Shanghai Jiyi Hydrogen Energy Technology Co ltd
Current assignee: Shanghai Jiyi Hydrogen Energy Technology Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-12-11
Anticipated expiration: 2030-05-13

Abstract

The fuel cell integrated heat insulation end plate is characterized in that the end plate (1), an insulating plate lining (2) and an outer insulating plate (3) are convexly matched and embedded into a whole; the middle part of the bottom surface of the end plate (1) is provided with a middle boss (11) in a downward protruding mode, the middle boss (11) penetrates through an insulating middle groove (21) downwards and is embedded into an outer insulating middle groove (31), the edge opening of the end plate (1) is provided with an end air port (12), an end hydrogen port (13) and an end water port (14), the top surface of the insulating plate liner (2) is provided with an air insulating liner port (22), a hydrogen insulating liner pipe (23) and a water insulating liner pipe (24) in a protruding mode, the upper top of the insulating plate liner is tightly attached to the end air port (12), the end hydrogen port (13) and the end water port (14), a gas inlet, a gas outlet, a cooling liquid inlet and a cooling liquid outlet are provided with anti-corrosion structures, the fluid distribution effect is optimized, the heat insulation effect of the gas and cooling liquid inlet is obviously improved, the thermal management of a galvanic pile is facilitated, a, the heat insulation, environmental protection and energy conservation can thoroughly eliminate the problem of icing at the gas inlet and the gas outlet and the cooling liquid inlet and the cooling liquid outlet.

Description

Integrated heat insulation end plate of fuel cell

Technical Field

The utility model relates to a fuel cell's end plate part insulation system improves technique, especially the thermal-insulated insulating end plate of fuel cell integration.

Background

A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. It is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so the efficiency is high; in addition, fuel cells use fuel and oxygen as raw materials; meanwhile, no mechanical transmission part is arranged, so that no noise pollution is caused, and the discharged harmful gas is less.

The end plate of the fuel cell mainly plays a role of fixing the fuel cell stack, and the insulating plate mainly plays an insulating role of the fuel cell; the end plate and the insulating plate are provided with an air inlet and an air outlet, a hydrogen inlet and an air outlet, and a cooling liquid inlet and a cooling liquid outlet, so that the matching structure of the end plate and the insulating plate simultaneously plays a role in fluid passage and fluid distribution.

The air inlet and outlet and the cooling liquid inlet and outlet of the existing end plate are generally of metal structures, can directly contact with gas and cooling liquid, and can cause corrosion after long-time work. Meanwhile, the metal end plate has high heat conduction efficiency, and is not beneficial to heat management of gas and cooling liquid. Particularly, when the galvanic pile is cold started at low temperature, serious problems such as icing at a gas inlet and a gas outlet and a cooling liquid inlet and a cooling liquid outlet can be caused. Existing end plates do not reasonably address the fluid distribution problem. Moreover, the matching effect with the insulating plate is poor, and the whole thickness is thicker. These defects severely restrict the quality improvement of the fuel cell product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fuel cell integration thermal-insulated insulating end plate overcomes above technical defect, solves above-mentioned prior art problem.

The purpose of the utility model is realized by the following technical measures: comprises an end plate, an insulating plate liner and an outer insulating plate; the end plate, the insulating plate lining and the outer insulating plate are convexly matched and embedded into a whole; a group of hydrogen channels and water channels are respectively arranged at two ends of the end plate, the insulating plate lining and the outer insulating plate and are used as a hydrogen inlet and a hydrogen outlet and a water inlet and a water outlet, and meanwhile, an air channel is respectively arranged at the edges of the other two opposite sides of the end plate, the insulating plate lining and the outer insulating plate and is used as an air inlet or an air outlet; the middle part of the bottom surface of the end plate is provided with a middle boss in a downward protruding mode, the middle part of the insulating plate liner is correspondingly hollowed to form an insulating middle groove, the middle part of the top surface of the outer insulating plate is provided with an outer insulating middle groove, the middle boss penetrates through the insulating middle groove to be embedded into the outer insulating middle groove, meanwhile, the edge of the end plate is provided with an end air port, an end hydrogen port and an end water port, the middle part of the top surface of the insulating plate liner is correspondingly provided with an air insulating liner port, a hydrogen insulating liner pipe and a water insulating liner pipe, the top of the insulating plate liner surface is respectively attached to the end air port, the end hydrogen port and the end water port, the end surface of the insulating plate liner pipe is flush with the top surface of the end plate, the edge of the outer insulating plate is hollowed to form.

Particularly, inner positioning holes are correspondingly formed beside the end hydrogen port, the hydrogen insulating liner tube and the outer hydrogen port, and outer positioning holes are formed outside the end hydrogen port.

Particularly, edge grooves are formed in the edges of the insulating plate liner and the outer insulating plate at positions corresponding to the bolt holes and the outer positioning holes.

In particular, bolt holes are formed in the outer edge of the end air opening.

Particularly, the top edges of the air insulation lining opening, the hydrogen insulation lining pipe and the water insulation lining pipe are respectively provided with a sealing groove.

Particularly, two groups of three hollow-out outer air inlet and outlet channels on the outer insulating plate at two sides of the outer insulating middle groove are respectively used as air inlets or outlets, and the three outer air inlet and outlet channels are respectively communicated with the air insulating lining opening channels at the same side.

In particular, the sectional areas of the outer hydrogen port and the outer water port are larger than the corresponding hydrogen insulating liner tube and the corresponding water insulating liner tube.

The utility model discloses an advantage and effect: the gas inlet and outlet and the cooling liquid inlet and outlet are provided with anti-corrosion structures, the fluid distribution effect is optimized, the heat insulation effect of the gas and the cooling liquid inlet is effectively improved, the thermal management of the galvanic pile is facilitated, a distribution manifold with a complex structure is not required to be additionally made, the galvanic pile structure is simplified, the structure thickness is reduced, the size is small, the integration level is high, the insulating sealing structure is compact in matching, the heat insulation, the environment protection and the energy conservation are realized, and the freezing problems of the gas inlet and outlet and the cooling liquid inlet and.

Drawings

Fig. 1 is a schematic view of the appearance structure of embodiment 1 of the present invention.

Fig. 2 is a schematic front view of an exploded structure of embodiment 1 of the present invention.

Fig. 3 is one of the schematic views of the axial structure of the decomposition structure of embodiment 1 of the present invention.

Fig. 4 is a second schematic view of the axial structure of the exploded structure of embodiment 1 of the present invention.

The reference numerals include:

1-end plate, 2-insulating lining plate, 3-outer insulating plate, 11-middle boss, 12-end air port, 13-end hydrogen port, 14-end water port, 21-insulating middle groove, 22-air insulating lining port, 23-hydrogen insulating lining pipe, 24-water insulating lining pipe, 31-outer insulating middle groove, 32-outer gas inlet and outlet channel, 33-outer hydrogen port, 34-outer water port, C-side groove, H-bolt hole, O-inner positioning hole, R-outer positioning hole and S-sealing groove.

Detailed Description

The utility model discloses a: end plate 1, insulating plate liner 2 and outer insulating plate 3.

The present invention will be further explained with reference to the drawings and examples.

Example 1: as shown in fig. 1, 2, 3 and 4, the matching structure is composed of an end plate 1, an insulating lining plate 2 and an outer insulating plate 3. The end plate 1 is embedded and matched with the insulating lining plate 2 and the outer insulating plate 3, and is easy to install and decompose, particularly, air, hydrogen and cooling water channels are reasonably lined with sealing, heat-insulating and insulating structures, and the comprehensive performance of the end plate is obviously improved; furthermore, a side groove C for further installation is reserved at the edge of the integrated rear body, so that fastening bolts passing through the bolt holes H at the edge of the end plate can pass through smoothly without interference.

In the above, the end plate 1, the insulating plate liner 2 and the outer insulating plate 3 are convexly matched and embedded into a whole; a group of hydrogen channels and water channels are respectively arranged at two ends of the end plate 1, the insulating plate lining 2 and the outer insulating plate 3 and are used as a hydrogen inlet and a hydrogen outlet and a water inlet and a water outlet, and meanwhile, an air channel is respectively arranged at the edges of the other two opposite sides of the end plate 1, the insulating plate lining 2 and the outer insulating plate 3 and is used as an air inlet or an air outlet; the middle part of the bottom surface of the end plate 1 is convexly provided with a middle boss 11 in a downward protruding mode, correspondingly, the middle part of the insulating plate liner 2 is hollowed with an insulating middle groove 21, the middle part of the top surface of the outer insulating plate 3 is provided with an outer insulating middle groove 31, the middle boss 11 penetrates through the insulating middle groove 21 downwards and is embedded into the outer insulating middle groove 31, meanwhile, the edge opening of the end plate 1 is provided with an end air port 12, an end hydrogen port 13 and an end water port 14, correspondingly, the top surface of the insulating plate liner 2 is convexly provided with an air insulating liner port 22, a hydrogen insulating liner tube 23 and a water insulating liner tube 24, the top of the insulating plate liner is tightly attached to the insertion end air port 12, the end hydrogen port 13 and the end water port 14, the end surfaces of the insulating plate liner are flush with the top surface of the end plate 1, the edge of the outer insulating plate 3 is hollowed with an outer air inlet.

In the above, the inner positioning holes O are correspondingly formed beside the end hydrogen port 13, the hydrogen insulating liner 23 and the outer hydrogen port 33, and the outer positioning holes R are formed outside the end hydrogen port 13.

In the above, at the positions corresponding to the bolt holes H and the outer positioning holes R, the edges of the insulating plate liner 2 and the outer insulating plate 3 are provided with the side grooves C.

In the above, the bolt hole H is formed on the outer edge of the end air port 12.

In the foregoing, the top edges of the air insulation liner 22, the hydrogen insulation liner 23 and the water insulation liner 24 are respectively provided with a sealing groove S.

In the embodiment of the utility model, end plate 1 is aluminum alloy or stainless steel. The inner insulating plate 2 and the outer insulating plate 3 are made of plastic or resin materials, have good insulating property and low porosity.

The embodiment of the utility model provides an in, for guaranteeing to seal the cooperation between end plate 1 and insulating welt 2, the three board type part of outer insulation board 3, the sealed glue of contact surface application between the board, directly paste together, form a fuel cell integration end plate overall structure.

The embodiment of the utility model provides an in, four bolt holes H in a body structure passes through the four corners of end plate 1 are fixed on the pile. In combination with the additional bolt holes H at the edge of the end air port 12, the integral structure is effectively peripherally located. The middle convex plate 11 protruding downwards at the bottom of the end plate 1 is a reinforcing structure, and the better positioning and connecting effect of the end plate 1 and the insulating member is obtained by clamping and embedding the insulating middle groove 21 penetrating through the insulating lining plate 2 into the outer insulating middle groove 31 recessed downwards at the upper side of the outer insulating plate 3.

The embodiment of the utility model provides an in, the outer air inlet and outlet channel 32 that lies in two three hollow out construction of external insulation mesocarp 31 both sides on the outer insulation board 3 is regarded as air intlet or export respectively, and these three outer air inlet and outlet channel 32 feeds through with the air insulation lining mouth 22 passageway of homonymy respectively.

The embodiment of the utility model provides an in, two outer hydrogen gas mouths 33, the outer water mouth 34 of group that are located 3 both ends of outer insulation board are hollow out construction respectively, and the sectional area is greater than corresponding hydrogen insulation bushing pipe 23, water insulation bushing pipe 24.

The embodiment of the utility model provides an in, form an insulating end plate after end plate 1 and insulating welt 2, the laminating of outer insulation board 3, be located two end air ports 12 of middle boss 11, insulating mesolot 21 and the external insulation mesolot 31 inlay card location structure both sides at middle part, one is as air intlet, another is as air outlet, and two three outer business turn over air channel 32 of two groups of 3 both sides of outer insulation board correspond the intercommunication respectively and regard as air intlet and air outlet.

The embodiment of the utility model provides an in, the air insulation bushing mouth 22 of insulating welt 2, the insulating bushing pipe 23 of hydrogen, the insulating bushing pipe 24 of water correspond the card directly with protruding structure and imbed in the terminal air mouth 12, the end hydrogen mouth 13 of the relevant position of end plate 1, hold the mouth of a river 14, guarantee that gas and coolant liquid only contact with insulating welt 2, outer insulation board 3, and do not produce the contact with end plate 1 surface.

Claims

1. The fuel cell integrated heat insulation end plate comprises an end plate (1), an insulation plate liner (2) and an outer insulation plate (3); it is characterized in that the end plate (1), the insulating plate lining (2) and the outer insulating plate (3) are convexly matched and embedded into a whole; two ends of the end plate (1), the insulating plate lining (2) and the outer insulating plate (3) are respectively provided with a group of hydrogen channels and water channels as a hydrogen inlet and a hydrogen outlet and a water inlet and a water outlet, and meanwhile, the edges of the other two opposite sides of the end plate (1), the insulating plate lining (2) and the outer insulating plate (3) are respectively provided with an air channel as an air inlet or an air outlet; wherein, the middle part of the bottom surface of the end plate (1) is provided with a middle boss (11) in a downward convex manner, correspondingly, the middle part of the insulating plate liner (2) is hollowed with an insulating middle groove (21), the middle part of the top surface of the outer insulating plate (3) is provided with an outer insulating middle groove (31), the middle boss (11) penetrates through the insulating middle groove (21) to be embedded into the outer insulating middle groove (31), meanwhile, the edge of the end plate (1) is provided with an end air port (12), an end hydrogen port (13) and an end water port (14), correspondingly, the upper surface of the top surface of the insulating plate liner (2) is provided with an air insulating lining port (22), a hydrogen insulating lining pipe (23) and a water insulating lining pipe (24), the upper top is tightly attached with the end air port (12), the end hydrogen port (13) and the end water port (14), the end surfaces are respectively flush with the top surface of the end plate (1), the edge of the outer insulating plate (3) is hollowed with an outer air inlet and outlet channel, A hydrogen gas insulation liner pipe (23) and a water insulation liner pipe (24).

2. The fuel cell integrated heat-insulating end plate of claim 1, wherein the end hydrogen port (13), the hydrogen insulating liner tube (23) and the outer hydrogen port (33) are provided with inner positioning holes (O) and outer positioning holes (R) respectively at the outer sides of the end hydrogen port (13).

3. The fuel cell integrated heat insulation insulating end plate of claim 1, wherein the edges of the insulating plate liner (2) and the outer insulating plate (3) are provided with side grooves (C) at positions corresponding to the bolt holes (H) and the outer positioning holes (R).

4. The fuel cell integrated heat-insulating end plate of claim 1, wherein bolt holes (H) are formed in the outer edges of the port air holes (12).

5. The fuel cell integrated heat insulation end plate of claim 1, wherein the top edges of the air insulation lining opening (22), the hydrogen insulation lining pipe (23) and the water insulation lining pipe (24) are respectively provided with a sealing groove (S).

6. The integrated heat-insulating end plate of the fuel cell as claimed in claim 1, wherein two sets of three hollowed-out external air inlet and outlet channels (32) on the external insulating plate (3) at two sides of the external insulating middle groove (31) are respectively used as air inlets or outlets, and the three external air inlet and outlet channels (32) are respectively communicated with the air insulating lining port (22) on the same side.

7. The fuel cell integrated heat insulation end plate of claim 1, wherein the cross-sectional areas of the outer hydrogen port (33) and the outer water port (34) are larger than the corresponding hydrogen insulation liner tube (23) and the corresponding water insulation liner tube (24).