End plate structure and hydrogen fuel cell

Abstract

The utility model relates to the technical field of hydrogen fuel cells, and discloses an end plate structure and a hydrogen fuel cell, the end plate structure comprises a plate body made of a plastic material, the front surface of the plate body is provided with a first groove which is used for installing a collector plate, the side surface of the plate body is provided with a second groove and a first installing hole, and the first installing hole is used for installing the collector plate. The second groove is used for mounting a tab, and a second mounting hole is formed in the back surface of the plate body; the first nut is mounted in the first mounting hole; the second nut is mounted in the second mounting hole; wherein the first groove, the first mounting hole and the second mounting hole are not communicated with one another. The end plate structure is good in insulation effect, improves the space utilization rate of the electric pile, and is convenient to install and use.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen fuel cell technical field, especially a kind of end plate structure and hydrogen fuel cell. BACKGROUND

[0002] Hydrogen fuel cell stack is the device that hydrogen and oxygen are converted into electric energy and heat energy by electrochemical reaction, and fuel cell stack is one of the core components of fuel cell engine. The main composition of current stack is: the middle part is single cell stack core consisting of bipolar plate and membrane electrode, two sides are in turn current collector plate, insulating plate, end plate, and the periphery is provided with compression force by pull rod or packaging structure. As fuel cell stack structural component, end plate is mostly used metal plate, and current collector plate, insulating plate and other components are used to form the outer support framework of fuel cell stack. The current collector plate on both sides of the stack is used as the positive and negative electrode of the battery respectively, and the current of the entire fuel cell is led out. In order to prevent electric leakage and isolate the battery, an insulating plate needs to be added between the metal end plate and the current collector plate, so as to realize the insulation of the current collector plate and the end plate. Due to the addition of insulating plate, the structure of the stack is not compact enough, the space utilization rate is not high, and the installation and use are not convenient. SUMMARY

[0003] The utility model aims at providing an end plate structure, which has good insulation effect, improves the space utilization rate of the stack and is convenient to install and use.

[0004] To achieve the above-mentioned purpose, on the one hand, the utility model provides an end plate structure, which comprises:

[0005] A plate body made of plastic material has a first groove on the front surface, the first groove is used for mounting a current collector plate, the side surface of the plate body has a second groove and a first mounting hole, the second groove is used for mounting a tab, and the back surface of the plate body has a second mounting hole.

[0006] A first nut is installed in the first mounting hole.

[0007] A second nut is installed in the second mounting hole.

[0008] Among them, the first groove, the first mounting hole and the second mounting hole are not connected with each other.

[0009] In some embodiments, the length of the first groove is greater than the length of the current collector plate, and the width of the first groove is greater than the width of the current collector plate.

[0010] In some embodiments, the second groove is located in the middle of the side edge of the plate body, and the depth of the second groove is greater than the thickness of the tab.

[0011] In some embodiments, the bottom of the second groove has a third mounting hole and a third nut, and the third nut is mounted in the third mounting hole.

[0012] In some embodiments, the side of the plate body has a plurality of mounting grooves, and the mounting grooves are distributed on both sides of the second groove, and the depth of the mounting grooves is greater than the depth of the second groove.

[0013] In some embodiments, the bottom of the mounting groove has a fourth mounting hole and a fourth nut, and the fourth nut is mounted in the fourth mounting hole.

[0014] In some embodiments, the back of the plate body has a plurality of weight reduction grooves, and the weight reduction grooves are not connected with the first groove.

[0015] In another aspect, the utility model provides a kind of hydrogen fuel cell, comprising the end plate structure described above.

[0016] The utility model provides an end plate structure, which has the following advantages compared with the prior art:

[0017] The plate body is made of plastic material, which has insulation effect, and does not need to install an insulating plate, thereby improving the utilization rate of the stack space. The front surface of the plate body has a first groove for mounting a current collecting plate. The side surface of the plate body has a second groove for mounting a tab and a first mounting hole. The back surface of the plate body has a second mounting hole. The first groove and the second groove facilitate the installation of the current collecting plate and the tab. The first nut and the second nut facilitate the fixed connection of the plate body and the external structure, thereby facilitating installation and use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model provides an end plate structure, which has the following advantages compared with the prior art:

[0019] Figure 2 The utility model provides an end plate structure, which has the following advantages compared with the prior art:

[0020] Figure 3 The utility model provides an end plate structure, which has the following advantages compared with the prior art:

[0021] In the drawings: 100, end plate structure; 1, plate body; 11, first groove; 12, second groove; 121, third mounting hole; 122, third nut; 13, first mounting hole; 14, second mounting hole; 15, mounting groove; 151, fourth mounting hole; 152, fourth nut; 16, weight reduction groove; 2, first nut; 3, second nut; 4, current collecting plate; 5, tab. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0023] It should be understood that, in the description of the present application, the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. That is, the features with "first", "second" can explicitly or implicitly include one or more of the features. In addition, unless otherwise stated, the meaning of "multiple" is two or more.

[0024] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0025] As Figures 1-3 shown, the end plate structure 100 of some embodiments of the present application includes a plate body 1, a first nut 2 and a second nut 3. Among them, the first nut 2 and the second nut 3 are inlaid in the plate body 1 by hot pressing process, so as to keep the nut structure stable and facilitate the assembly of the plate body 1 and the external structure, and can provide high-strength, stable and reliable connection.

[0026] The plate body 1 is made of plastic material and has an insulating effect. The front surface of the plate body 1 has a first recess 11 for mounting a current collecting plate 4, the side surface of the plate body 1 has a second recess 12 and a first mounting hole 13, the second recess 12 is used for mounting a tab 5, and the back surface of the plate body 1 has a second mounting hole 14.

[0027] The first nut 2 is installed in the first mounting hole 13. Specifically, the first nut 2 is inlaid in the first mounting hole 13 by hot pressing process, which can provide high-strength, stable and reliable connection.

[0028] The second nut 3 is installed in the second mounting hole 14. Specifically, the second nut 3 is inlaid in the second mounting hole 14 by hot pressing process, which can provide high-strength, stable and reliable connection.

[0029] In this embodiment, the first recess 11, the first mounting hole 13 and the second mounting hole 14 are not connected to each other, so as to avoid interference between the components during installation.

[0030] Based on the above structure, the plate body 1 is made of plastic material, which has insulation effect, and does not need to install an insulation plate, thereby improving the utilization rate of the stack space. The front surface of the plate body 1 has the first groove 11 for installing the current collecting plate 4, the side surface of the plate body 1 has the second groove 12 for installing the tab 5, and the back surface of the plate body 1 has the second mounting hole 14. The first groove 11 and the second groove 12 facilitate the installation of the current collecting plate 4 and the tab 5. The first nut 2 and the second nut 3 facilitate the fixed connection of the plate body 1 and the external structure, thereby facilitating the installation and use.

[0031] As shown in Figure 3 some embodiments, the length of the first groove 11 is greater than the length of the current collecting plate 4, and the width of the first groove 11 is greater than the width of the current collecting plate 4. The current collecting plate 4 is installed in the first groove 11, and the length and width of the current collecting plate 4 and the first groove 11 are set according to actual needs.

[0032] As shown in Figure 3 some embodiments, the second groove 12 is located in the middle of the side edge of the plate body 1, and the depth of the second groove 12 is greater than the thickness of the tab 5. The tab 5 is separated from the parts of the side edge of the plate body 1, thereby having insulation effect.

[0033] As shown in Figure 2 some embodiments, the bottom of the second groove 12 has a third mounting hole 121 and a third nut 122, and the third nut 122 is installed in the third mounting hole 121. Specifically, the third nut 122 is embedded in the third mounting hole 121 by hot pressing process, which can provide high-strength, stable and reliable connection.

[0034] As shown in Figure 2 some embodiments, the side edge of the plate body 1 has a plurality of installation grooves 15, the installation grooves 15 are distributed on both sides of the second groove 12, and the depth of the installation grooves 15 is greater than the depth of the second groove 12. The installation grooves 15 are used for installing the external pull rod or packaging structure.

[0035] Specifically, the bottom of the installation groove 15 has a fourth mounting hole 151 and a fourth nut 152, and the fourth nut 152 is installed in the fourth mounting hole 151. The fourth nut 152 is embedded in the fourth mounting hole 151 by hot pressing process, which can provide high-strength, stable and reliable connection.

[0036] In some embodiments, the back surface of the plate body 1 has a plurality of weight reduction grooves 16, and the weight reduction grooves 16 are not connected with the first groove 11. The weight reduction grooves 16 can reduce the weight of the plate body 1.

[0037] The hydrogen fuel cell of some other embodiments of the utility model, including the end plate structure 100 of above.

[0038] Based on the hydrogen fuel cell structure, the insulation effect is good, the space utilization of the electric pile is improved, and installation and use are facilitated.

[0039] The above only is the preferred implementation manner of the utility model, and it should be pointed out that, for ordinary technical personnel in the technical field, several improvements and replacements can be made without departing from the technical principle of the utility model, and these improvements and replacements should also be regarded as the protection scope of the utility model.

Claims

1. An end plate structure, characterized in that, include: The plate body is made of plastic material. The front side of the plate body has a first groove for installing a current collector plate. The side of the plate body has a second groove and a first mounting hole. The second groove is used to install an electrode tab. The back side of the plate body has a second mounting hole. The first nut is installed in the first mounting hole; as well as The second nut is installed in the second mounting hole; The first groove, the first mounting hole, and the second mounting hole are not interconnected.

2. The end plate structure according to claim 1, characterized in that, The length of the first groove is greater than the length of the collector plate, and the width of the first groove is greater than the width of the collector plate.

3. The end plate structure according to claim 1, characterized in that, The second groove is located in the middle of the side of the plate, and the depth of the second groove is greater than the thickness of the tab.

4. The end plate structure according to claim 3, characterized in that, The bottom of the second groove has a third mounting hole and a third nut, the third nut being installed in the third mounting hole.

5. The end plate structure according to claim 3, characterized in that, The plate has mounting grooves on its side, and there are multiple mounting grooves. The mounting grooves are distributed on both sides of the second groove, and the depth of the mounting grooves is greater than the depth of the second groove.

6. The end plate structure according to claim 5, characterized in that, The bottom of the mounting groove has a fourth mounting hole and a fourth nut, and the fourth nut is installed in the fourth mounting hole.

7. The end plate structure according to claim 1, characterized in that, The back of the plate has a weight-reducing groove, and there are multiple weight-reducing grooves. The weight-reducing grooves are not connected to the first groove.

8. A hydrogen fuel cell, characterized in that, Includes the endplate structure as described in any one of claims 1-7.

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