A bipolar plate with a reinforcing structure

Abstract

The utility model relates to bipolar plate technical field, and disclose a bipolar plate with reinforcing structure, including bipolar plate body, and set up reinforcing subassembly in the lateral position of bipolar plate body, reinforcing subassembly includes the auxiliary mechanism of setting up in the lateral position of bipolar plate body, the lateral position of bipolar plate body is provided with reinforcing mechanism, the auxiliary mechanism includes runner plate and reinforcing plate, runner plate fixed mounting is in the inner wall of bipolar plate body, reinforcing plate fixed mounting is in the inner wall of bipolar plate body, the lateral wall fixed mounting of reinforcing plate has sealing strip, the lateral wall of sealing strip and the inner wall of bipolar plate body fixed connection. The utility model solves the problem that the single of part reinforcing structure is more, structure distribution is more complex, and reinforcing structure distribution is uneven, reduces the working efficiency of bipolar plate, and leads to the problem that fuel cell stack volume increases.

Description

Technical Field

[0001] This utility model relates to the field of bipolar plate technology, specifically a bipolar plate with a reinforced structure. Background Technology

[0002] Bipolar plates are the core functional components of a proton exchange membrane (PEM) fuel cell, typically in sheet form. Their material varies depending on the application, including graphite, metal, or composite materials. Their primary function in the fuel cell stack is to achieve "multiple cells connected in series" and "support the entire electrochemical reaction process." Specifically, they separate the cathode and anode gases of adjacent cells, conduct electrons to form external circuit current, transfer reaction heat to maintain stack temperature stability, support the membrane electrode assembly to prevent deformation, and guide gas and discharge product water through flow channels. They are key components determining the power density, lifespan, and cost of the fuel cell stack, thus requiring the use of a bipolar plate with a reinforced structure. The existing reinforcement structures are relatively simple, with complex structural distribution and uneven distribution, which reduces the working efficiency of the bipolar plates and leads to an increase in the size of the fuel cell stack. Summary of the Invention

[0003] The purpose of this invention is to provide a bipolar plate with a reinforced structure, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a bipolar plate with a reinforced structure, comprising a bipolar plate body; And a reinforcing component disposed on the side of the bipolar plate body; The reinforcing component includes an auxiliary mechanism disposed on the side of the bipolar plate body; A reinforcing mechanism is provided on the side of the bipolar plate body.

[0005] Preferably, a mounting block is fixedly installed on the side wall of the bipolar plate body, and a positioning hole is provided on the inner wall of the mounting block.

[0006] Preferably, the auxiliary mechanism includes a flow channel plate and a reinforcing plate. The flow channel plate is fixedly installed on the inner wall of the bipolar plate body, and the reinforcing plate is fixedly installed on the inner wall of the bipolar plate body. A sealing strip is fixedly installed on the side wall of the reinforcing plate, and the side wall of the sealing strip is fixedly connected to the inner wall of the bipolar plate body.

[0007] Preferably, there are two flow channel plates, and the two flow channel plates are symmetrically arranged with respect to the middle surface of the bipolar plate body in the left-right direction.

[0008] Preferably, the reinforcing mechanism includes a bipolar plate substrate, which is made of the same material as the bipolar plate body. An epoxy resin composite substrate is fixedly installed on the top of the bipolar plate substrate. A carbon fiber woven interlayer is fixedly installed on the top of the epoxy resin composite substrate. A thick copper foil interlayer is fixedly installed on the top of the carbon fiber woven interlayer. A cross-shaped rib is fixedly installed on the top of the thick copper foil interlayer.

[0009] Preferably, the epoxy resin composite substrate and the carbon fiber braided interlayer are tightly bonded by resin impregnation, and the carbon fiber braided interlayer and the thick copper foil interlayer are tightly bonded by resin impregnation.

[0010] Preferably, there are four mounting blocks, all of which are of equal shape and size, and are respectively located at the four corners of the bipolar plate body.

[0011] This invention provides a bipolar plate with a reinforced structure. It has the following beneficial effects: (1) The positioning hole on the mounting block can quickly stabilize the position of the bipolar plate body. The flow channel plate can be used to guide the flow of hydrogen. The low-resistance flow channel is adopted. The sealing strip on the side wall of the reinforcing plate can prevent gas mixing and coolant leakage, making it easier for operators to use the device.

[0012] (2) The present invention strengthens the bipolar plate body by constructing a reinforcing mechanism and the cross-shaped rib design avoids stress concentration. After strengthening, the crack resistance is enhanced. The design of thick copper foil interlayer and carbon fiber braided interlayer can improve the bipolar plate body's resistance to temperature cycle deformation. The resin impregnation achieves tight interlayer bonding and improves the long-term high temperature aging resistance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the appearance and structure of this utility model; Figure 2 This utility model Figure 1 A magnified view of part A in the image; Figure 3 This is a cross-sectional planar structural diagram of the reinforcing mechanism of this utility model.

[0014] In the figure: 1. Bipolar plate body; 2. Mounting block; 3. Positioning hole; 4. Reinforcing component; 41. Auxiliary mechanism; 411. Flow channel plate; 412. Reinforcing plate; 413. Sealing strip; 42. Reinforcing mechanism; 421. Cross-shaped ribs; 422. Thick copper foil interlayer; 423. Carbon fiber braided interlayer; 424. Epoxy resin composite substrate; 425. Bipolar plate substrate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0020] Example 1: A preferred embodiment of the bipolar plate with a reinforced structure provided by this utility model is as follows: Figures 1 to 3 As shown: A bipolar plate with a reinforced structure includes a bipolar plate body 1, mounting blocks 2 are fixedly installed on the side wall of the bipolar plate body 1, positioning holes 3 are opened on the inner wall of the mounting blocks 2, there are four mounting blocks 2, the four mounting blocks 2 are all the same in shape and size, and the four mounting blocks 2 are respectively set at the four corners of the bipolar plate body 1. And a reinforcing component 4 located on the side of the bipolar plate body 1; The reinforcing component 4 includes an auxiliary mechanism 41 located on the side of the bipolar plate body 1; A reinforcing mechanism 42 is provided on the side of the bipolar plate body 1.

[0021] The auxiliary mechanism 41 includes a flow channel plate 411 and a reinforcing plate 412. The flow channel plate 411 is fixedly installed on the inner wall of the bipolar plate body 1, and the reinforcing plate 412 is fixedly installed on the inner wall of the bipolar plate body 1. A sealing strip 413 is fixedly installed on the side wall of the reinforcing plate 412, and the side wall of the sealing strip 413 is fixedly connected to the inner wall of the bipolar plate body 1.

[0022] In this embodiment, there are two flow channel plates 411, and the two flow channel plates 411 are symmetrically arranged with respect to the middle surface in the left and right directions of the bipolar plate body 1.

[0023] In the specific implementation process, the operator can quickly stabilize the position of the bipolar plate body 1 through the positioning hole 3 opened on the mounting block 2. The flow channel plate 411 can be used to guide the flow of hydrogen. The low-resistance flow channel is adopted. The sealing strip 413 on the side wall of the reinforcing plate 412 can prevent gas cross-mixing and coolant leakage, making it easier for the operator to use the device.

[0024] Example 2: Based on Example 1, a preferred embodiment of the bipolar plate with a reinforced structure provided by this utility model is as follows: Figures 1 to 3 As shown: The reinforcing mechanism 42 includes a bipolar plate substrate 425, which is the material of the bipolar plate body 1. An epoxy resin composite substrate 424 is fixedly installed on the top of the bipolar plate substrate 425. A carbon fiber braided interlayer 423 is fixedly installed on the top of the epoxy resin composite substrate 424. A thick copper foil interlayer 422 is fixedly installed on the top of the carbon fiber braided interlayer 423. A cross-shaped rib 421 is fixedly installed on the top of the thick copper foil interlayer 422.

[0025] In this embodiment, the epoxy resin composite substrate 424 and the carbon fiber braided interlayer 423 are tightly bonded together by resin impregnation, and the carbon fiber braided interlayer 423 and the thick copper foil interlayer 422 are tightly bonded together by resin impregnation.

[0026] In the specific implementation process, the operator strengthens the bipolar plate body 1 by reinforcing the mechanism 42 and designing the cross-shaped ribs 421 to avoid stress concentration. After strengthening, the crack resistance is enhanced. The design of the thick copper foil interlayer 422 and the carbon fiber braided interlayer 423 can improve the ability of the bipolar plate body 1 to resist temperature cycle deformation. The resin impregnation achieves tight interlayer bonding and improves the ability to resist long-term high temperature aging.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bipolar plate with a reinforced structure, comprising a bipolar plate body (1); and a reinforcing component (4) disposed on the side of the bipolar plate body (1); characterized in that: The reinforcing component (4) includes an auxiliary mechanism (41) disposed on the side of the bipolar plate body (1). A reinforcing mechanism (42) is provided on the side of the bipolar plate body (1). The reinforcing mechanism (42) includes a bipolar plate substrate (425), which is the material of the bipolar plate body (1). An epoxy resin composite substrate (424) is fixedly installed on the top of the bipolar plate substrate (425). A carbon fiber braided interlayer (423) is fixedly installed on the top of the epoxy resin composite substrate (424). A thick copper foil interlayer (422) is fixedly installed on the top of the carbon fiber braided interlayer (423). A cross-shaped rib (421) is fixedly installed on the top of the thick copper foil interlayer (422).

2. The bipolar plate with a reinforced structure according to claim 1, characterized in that: The side wall of the bipolar plate body (1) is fixedly installed with an installation block (2), and the inner wall of the installation block (2) is provided with a positioning hole (3).

3. A bipolar plate with a reinforced structure according to claim 1, characterized in that: The auxiliary mechanism (41) includes a flow channel plate (411) and a reinforcing plate (412). The flow channel plate (411) is fixedly installed on the inner wall of the bipolar plate body (1). The reinforcing plate (412) is fixedly installed on the inner wall of the bipolar plate body (1). A sealing strip (413) is fixedly installed on the side wall of the reinforcing plate (412). The side wall of the sealing strip (413) is fixedly connected to the inner wall of the bipolar plate body (1).

4. A bipolar plate with a reinforced structure according to claim 3, characterized in that: There are two flow channel plates (411), and the two flow channel plates (411) are symmetrically arranged with respect to the middle surface of the bipolar plate body (1) in the left and right directions.

5. A bipolar plate with a reinforced structure according to claim 1, characterized in that: The epoxy resin composite substrate (424) and the carbon fiber braided interlayer (423) are tightly bonded together by resin impregnation, and the carbon fiber braided interlayer (423) and the thick copper foil interlayer (422) are tightly bonded together by resin impregnation.

6. A bipolar plate with a reinforced structure according to claim 2, characterized in that: There are four mounting blocks (2), all of which are of the same shape and size, and are respectively located at the four corners of the bipolar plate body (1).

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