Extended fuel cell pole plate voltage acquisition structure

Abstract

The utility model relates to an extension type fuel cell pole plate voltage acquisition structure, which is suitable for a pole plate and comprises a power taking sheet, one end of the pole plate is provided with a concave groove, and the power taking sheet is clamped in the concave groove; the power taking sheet comprises a first connecting part, a second connecting part and a third connecting part; the second connecting part is respectively connected with the first connecting part and the third connecting part; the first connecting part and the second connecting part are clamped in the concave groove; the third connecting part is connected with the connector; and an injection molding rubber strip is arranged on the third connecting part. By means of the structure, the contact resistance of the electricity taking piece and the polar plate is greatly reduced, the follow-up assembly inspection efficiency can be effectively improved, damage to the polar plate is reduced, and later maintenance is facilitated. Through the arrangement of the injection molding rubber strip, the connection between the electricity taking sheet and the polar plate is stable, the reliability of the connection between the electricity taking sheet and the connector can be improved, and poor contact is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an extended fuel cell plate voltage acquisition structure. Background Art

[0002] A fuel cell is a kind of energy source with high efficiency, high specific energy and low pollution, and has received more and more attention. A fuel cell is composed of a plurality of bipolar plates and membrane electrodes with the same structure stacked. Each bipolar plate is separately provided with a flow field area, namely a hydrogen flow field, an air flow field and a cooling water flow field, and the internal fluid is evenly distributed into each flow channel as much as possible through the flow field.

[0003] The voltage inspection of the fuel cell is called the "eye" of the fuel cell. Its main body is generally divided into a welded main body, a pin-type main body and a bonded main body, and the pin-type main body is more common. The existing voltage inspection structure of the hydrogen fuel cell stack is separated from the plates of the stack, and the rapid installation of multiple PIN plug-ins cannot be realized. Moreover, the existing voltage inspection structure has a complex and cumbersome assembly process, which is time-consuming and laborious, and has poor stability. The part connected to the plate is prone to deformation, which is not conducive to the installation of the connector, and the connection reliability is poor, and it is easy to damage the plate (when the plate is thin); in addition, the contact resistance is large, and it is also easy to occur dislocation short circuit, poor contact, easy to fall off and other situations, and the reliability is poor. Summary of the Utility Model

[0004] Based on this, the utility model provides an extended fuel cell plate voltage acquisition structure, aiming to solve the technical problems of the existing voltage acquisition and inspection structure with complex and cumbersome assembly process, poor connection reliability with the plate, easy damage to the plate, large contact resistance, easy occurrence of dislocation short circuit, poor contact, easy to fall off and other situations, and poor stability and reliability. The structure of this application is simple, has strong versatility, good stability and low maintenance cost.

[0005] To achieve the above object, the embodiment of the utility model proposes the following technical solution: An extended fuel cell plate voltage acquisition structure, applicable to a plate, includes a power-taking piece. One end of the plate is provided with a concave groove, and the power-taking piece is clamped in the concave groove; the power-taking piece includes a first connection part, a second connection part and a third connection part; the second connection part is respectively connected with the first connection part and the third connection part; the first connection part and the second connection part are clamped in the concave groove; the third connection part is connected with a connector; and a plastic injection strip is arranged on the third connection part.

[0006] As a preferred embodiment, the plastic injection strip is arranged along the edge of the third connection part.

[0007] As a preferred embodiment, in the direction from the first connecting portion to the third connecting portion, the injection molding strip is arranged in a shape similar to the Chinese character "six".

[0008] As a preferred embodiment, the first connecting portion is perpendicular to the second connecting portion, and the first connecting portion and the second connecting portion are arranged in a "T" shape.

[0009] As a preferred embodiment, the concave groove is arranged in a "T" shape; the concave groove is respectively adapted to the first connecting portion and the second connecting portion.

[0010] As a preferred embodiment, the third connecting portion is arranged in a "H" shape, and the third connecting portion is adapted to the connector.

[0011] As a preferred embodiment, the first connecting portion, the second connecting portion and the third connecting portion are integrally formed.

[0012] As a preferred embodiment, through holes are provided on the third connecting portion. When stacking the power-taking pieces, the stacking of the power-taking pieces can be facilitated through the through holes.

[0013] As a preferred embodiment, the power-taking piece is a copper alloy power-taking piece with a gold-plated surface.

[0014] As a preferred embodiment, the connector is a CVP connector.

[0015] The power-taking piece of the structure of the present application adopts an extended setting, and the voltage acquisition point is located on the extended power-taking piece, so that the power-taking piece is used as an extended part of the electrode plate for voltage acquisition, and the power-taking piece can provide sufficient space for connecting the voltage acquisition device.

[0016] The beneficial effects achieved by the present utility model: Through the structure of the present application, the contact area between the power-taking piece and the electrode plate is large, which greatly reduces the contact resistance. And, through the structure of the present application, the efficiency of subsequent assembly inspection can be effectively improved, the damage to the electrode plate can be reduced, and the later maintenance is facilitated. By arranging the injection molding strip on the third connecting portion, the support strength of the power-taking piece can be effectively enhanced, and the stability of the connection between the power-taking piece and the electrode plate can be effectively increased, so that the connection between the power-taking piece and the electrode plate is stable; at the same time, the injection molding strip can effectively prevent the misalignment short circuit of adjacent parts, increase the reliability of the connection between the power-taking piece and the connector, and effectively prevent poor contact.

[0017] Through the structure of the present application, the accurate acquisition and reliable transmission of the working voltage of the fuel cell can be realized, which provides strong support for the performance evaluation and optimization of the fuel cell; the structure of the present application has good versatility and scalability, and can adapt to different types and scales of fuel cell systems. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the extended fuel cell plate voltage acquisition structure according to an embodiment of the present invention;

[0020] Figure 2 For Figure 1 it is a schematic diagram of the structure where the power-taking piece is connected to the plate;

[0021] Figure 3 For Figure 1 it is a schematic diagram of the structure where the power-taking piece is connected to a single cell;

[0022] Figure 4 It is a schematic diagram of the structure where an external connector is connected to a stack through a power-taking piece.

[0023] The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.

[0026] In this application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] Specifically, as Figures 1 to 2 shown, the embodiment of the present utility model provides an extended fuel cell plate voltage acquisition structure applicable to the plate 100, including a power-taking piece 10. One end of the plate 100 is provided with a concave groove (not marked in the figure), and the power-taking piece 10 is clamped in the concave groove; the power-taking piece 10 includes a first connection portion 11, a second connection portion 12, and a third connection portion 13; the second connection portion 12 is respectively connected to the first connection portion 11 and the third connection portion 13; the first connection portion 11 and the second connection portion 12 are clamped in the concave groove; the third connection portion 13 is connected to the connector 200; and a plastic injection strip 20 is provided on the third connection portion 13.

[0030] As a preferred embodiment, the injection molding strip 20 is arranged along the edge of the third connecting portion 13. By arranging the injection molding strip 20 along the edge of the third connecting portion 13, the support strength of the power taking piece 10 can be effectively enhanced, and the connection stability between the power taking piece 10 and the electrode plate 100 can be effectively increased, so that the connection between the power taking piece 10 and the electrode plate 100 is stable; meanwhile, the injection molding strip 20 can effectively prevent misalignment short circuit at adjacent parts, increase the reliability of the connection between the power taking piece 10 and the connector 200, and effectively prevent poor contact.

[0031] As a preferred embodiment, in this embodiment, the injection molding strip 20 is arranged in a shape similar to the Chinese character "six" from the first connecting portion 11 to the third connecting portion 13. In this way, the power taking piece 10 has better support strength, better connection stability and reliability.

[0032] As a preferred embodiment, the first connecting portion 11 is perpendicular to the second connecting portion 12, and the first connecting portion 11 and the second connecting portion 12 are arranged in a "T" shape.

[0033] As a preferred embodiment, the concave groove is arranged in a "T" shape; the concave groove is respectively arranged in an adapted manner with the first connecting portion 11 and the second connecting portion 12.

[0034] As a preferred embodiment, the third connecting portion 13 is arranged in a "H" shape, and the third connecting portion 13 is arranged in an adapted manner with the connector 200.

[0035] As a preferred embodiment, the first connecting portion 11, the second connecting portion 12 and the third connecting portion 13 are integrally formed.

[0036] As a preferred embodiment, a through hole 131 is arranged on the third connecting portion 13. When stacking the power taking pieces 10, the through hole 131 can facilitate the stacking of the power taking pieces 10.

[0037] As a preferred embodiment, the power taking piece 10 is a copper alloy power taking piece with a gold-plated surface.

[0038] As a preferred embodiment, the connector 200 is a CVP connector. Figure 3 For Figure 1 the structural schematic diagram of the connection between the power taking piece and the single cell 300; Figure 4 For the structural schematic diagram of the connection between the external connector 200 and the battery stack 400 through the power taking piece 10. As can be seen from Figure 3 And Figure 4 It can be seen that the power taking piece of the structure of the present application is arranged in an extended manner, and the contact area between the power taking piece and the electrode plate is large, the installation is convenient and fast, and the later maintenance is convenient.

[0039] The power-taking piece of the structure of the present application is arranged in an extended manner, and the voltage acquisition point is located on the extended power-taking piece, so that the power-taking piece is used as an extended part of the electrode plate for voltage acquisition, and the power-taking piece can provide sufficient space for connecting the voltage acquisition device.

[0040] Through the structure of the present application, the contact area between the power-taking piece and the electrode plate is large, which greatly reduces the contact resistance. Moreover, through the structure of the present application, the efficiency of subsequent assembly inspection can be effectively improved, the damage to the electrode plate can be reduced, and the later maintenance is facilitated. By arranging a plastic injection strip at the third connecting part, the support strength of the power-taking piece can be effectively enhanced, and the stability of the connection between the power-taking piece and the electrode plate can be effectively increased, so that the power-taking piece and the electrode plate are stably connected; at the same time, the plastic injection strip can effectively prevent the misalignment short circuit of adjacent parts, increase the reliability of the connection between the power-taking piece and the connector, and effectively prevent poor contact.

[0041] Through the structure of the present application, the accurate acquisition and reliable transmission of the working voltage of the fuel cell can be realized, which provides strong support for the performance evaluation and optimization of the fuel cell; the structure of the present application has good versatility and scalability, and can adapt to different types and scales of fuel cell systems.

[0042] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0043] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0044] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An extended fuel cell plate voltage acquisition structure, characterized in that Applicable to the electrode plate, including a power-taking piece. One end of the electrode plate is provided with a concave groove, and the power-taking piece is clamped in the concave groove; the power-taking piece includes a first connecting portion, a second connecting portion and a third connecting portion; the second connecting portion is respectively connected to the first connecting portion and the third connecting portion; the first connecting portion and the second connecting portion are clamped in the concave groove; the third connecting portion is connected to a connector; a plastic injection strip is arranged on the third connecting portion.

2. The extended fuel cell plate voltage acquisition structure according to claim 1, characterized in that The plastic injection strip is arranged along the edge of the third connecting portion.

3. The extended fuel cell plate voltage acquisition structure according to claim 1, characterized in that In the direction from the first connecting portion to the third connecting portion, the plastic injection strip is arranged in a shape similar to the Chinese character "six".

4. The extended fuel cell plate voltage acquisition structure according to claim 1, characterized in that The first connecting portion is perpendicular to the second connecting portion, and the first connecting portion and the second connecting portion are arranged in a "T" shape.

5. The extended fuel cell plate voltage acquisition structure according to claim 4, characterized in that The concave groove is arranged in a "T" shape; the concave groove is respectively adapted to the first connecting portion and the second connecting portion.

6. The extended fuel cell plate voltage acquisition structure according to claim 1, characterized in that, The third connecting portion is arranged in a "work" shape, and the third connecting portion is adapted to the connector.

7. The extended fuel cell plate voltage acquisition structure according to claim 1, wherein The first connecting portion, the second connecting portion and the third connecting portion are integrally formed.

8. The extended fuel cell plate voltage acquisition structure according to claim 1, characterized in that A through hole is arranged on the third connecting portion.

9. The extended fuel cell plate voltage acquisition structure according to claim 1, characterized in that The power-taking piece is a copper alloy power-taking piece with a gold-plated surface.

10. The extended fuel cell plate voltage acquisition structure according to claim 1, characterized in that, The connector is a CVP connector.

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