Bipolar plate acquisition structure with supporting function

Abstract

The utility model relates to a bipolar plate acquisition structure with a supporting function, which comprises a metal bipolar plate, a limiting groove is arranged at the edge of the metal bipolar plate, a limiting rod is concentrically arranged in the limiting groove, a plurality of acquisition terminals are sleeved on the limiting rod, each acquisition terminal comprises two acquisition sheets and a connecting sheet, and the connecting sheet is arranged between the two acquisition sheets. The two collecting pieces are arranged at the same end of the connecting piece, a gap matched with the metal bipolar plate is reserved between the two collecting pieces, the two collecting pieces are electrically connected with a positive plate and a negative plate of the metal bipolar plate respectively, through holes matched with the limiting rods are formed in the collecting pieces, and the connecting piece is electrically connected with the integration box. The collecting terminal has the advantages that the collecting terminal is diversified in function, the contact position of the polar plate and the limiting rod can be supported while the collecting function of the collecting terminal is achieved, deformation of the polar plate is avoided, additional structures do not need to be arranged on the polar plate, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of fuel cell detection, in particular to a bipolar plate collection structure with a supporting function. Background Art

[0002] Metal battery stacks are generally composed of dozens or hundreds of cells stacked together, and the performance fluctuations of each cell may affect the performance of the entire battery stack. Therefore, it is necessary to set corresponding collection terminals for each cell. These collection terminals need to occupy a certain amount of battery stack space but often only have collection functions, and the functions are relatively simple. In addition, in order to improve consistency when assembling metal battery stacks, limit grooves are set on the edges and limit rods are set in the limit grooves to limit each cell. However, when the battery stack is compressed, friction will be generated between the plate and the limit rod, which can easily cause deformation of the plate. Summary of the invention

[0003] The utility model mainly solves the above problems and provides a bipolar plate collection structure with a supporting function. The limiting grooves of the plates are arranged to support the plates while having a single battery collection function to prevent deformation of the plates due to friction with the limiting rods.

[0004] The technical solution adopted by the utility model to solve its technical problems is a bipolar plate collection structure with a supporting function, comprising a metal bipolar plate, an edge of the metal bipolar plate is provided with a limit groove, a limit rod is concentrically arranged in the limit groove, a plurality of collection terminals are sleeved on the limit rod, the collection terminals include two collection pieces and a connecting piece, the two collection pieces are arranged at the same end of the connecting piece and a gap matching the metal bipolar plate is left between the collection pieces, the two collection pieces are electrically connected to the positive and negative plates of the metal bipolar plate, respectively, the collection piece is provided with a through hole matching the limit rod, and the connecting piece is electrically connected to the integrated box.

[0005] As a preferred embodiment of the above scheme, an anti-slip sheet is provided at the end of the collection sheet, and convex points are provided on the opposite sides of the anti-slip sheet. A convex edge is provided on the metal bipolar plate, and a groove matching the convex point is provided on the convex edge.

[0006] As a preferred embodiment of the above scheme, the anti-dropping sheet overlaps with the end of the collecting sheet to form a thickened portion.

[0007] As a preferred solution of the above solution, there are at least two protrusions.

[0008] As a preferred solution of the above solution, an insulating layer is adhered to the outer surface of the collection terminal.

[0009] As a preferred solution of the above solution, the insulating layer is made of pen material. The insulating layer is made of pen material.

[0010] The utility model has the advantages that the collection terminal has diversified functions, can support the contact point between the pole plate and the limit rod while realizing its own collection function, avoids deformation of the pole plate, does not need to set additional structure on the pole plate, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Schematic diagram of the structure of the bipolar plate collection structure in the embodiment.

[0012] Figure 2 Schematic diagram of the structure of the acquisition terminal and the metal bipolar plate in the embodiment.

[0013] Figure 3 Schematic diagram of the side structure of the acquisition terminal in the embodiment.

[0014] 1-metal bipolar plate 2-collection terminal 3-limiting rod 4-integrated box 5-convex edge 6-groove 7-limiting groove 8-through hole 9-connecting piece 10-collection piece 11-anti-dropping piece 12-convex point. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further described below through embodiments and in conjunction with the accompanying drawings.

[0016] Example:

[0017] This embodiment provides a bipolar plate collection structure with a supporting function, such as Figures 1 to 3 As shown, it includes a metal bipolar plate 1, a semicircular limiting groove 7 is provided on the edge of the metal bipolar plate, and a limiting rod 3 is concentrically arranged in the limiting groove 7. The limiting rod is used to limit each metal bipolar plate to ensure the consistency of the stacking of the metal bipolar plates after loading. A plurality of collection terminals 2 are sleeved on the limiting rod, and the collection terminal 2 includes two collection sheets 10 and a connecting sheet 9. The two collection sheets 10 are arranged at the same end of the connecting sheet 9 and a gap matching the metal bipolar plate is left between the collection sheets 10. The two collection sheets are electrically connected to the positive and negative plates of the metal bipolar plate in the form of contact. The collection sheet 10 is provided with a through hole 8 matching the limiting rod, and the connecting sheet 9 is electrically connected to the integrated box.

[0018] At the end of the collection sheet, there is also an anti-slip sheet 11, which overlaps with the end of the collection sheet to form a thickened portion. The thickened portion fills the gap between adjacent metal bipolar plates to provide support for the metal bipolar plates to prevent the metal bipolar plates from being deformed by the friction between the limit rods during stacking. The anti-slip sheet 11 is provided with a convex point 12 on the opposite side, and correspondingly, a convex edge 5 is provided on the metal bipolar plate, and a groove 6 matching the convex point is provided on the convex edge. The convex point and the groove cooperate to prevent the collection terminal from falling off and limiting the depth, and the setting of multiple convex points can achieve the angle limiting of the collection terminal. In addition, in order to avoid short circuit caused by deformation of the collection terminal, an insulating layer is adhered to the outer surface of the collection terminal, and the insulating layer is made of pen material.

[0019] When the bipolar plate collection structure with supporting function in this embodiment is used for the metal bipolar plate stack, each collection terminal is first clamped on each metal bipolar plate, and then the metal bipolar plates with collection terminals are sequentially sleeved on the limit rods, and finally the stack is compressed and tightened. Due to the presence of the collection terminals, the gaps between the metal bipolar plates in the limit groove area are filled with thickened parts, which strengthens the mechanical strength of the area and also makes the area of ​​each metal bipolar plate supported and no longer in a suspended state. Therefore, when the stack is compressed, the deformation of the metal bipolar plate caused by the friction between the limit rod and the metal bipolar plate can be avoided.

[0020] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A bipolar plate collection structure with a supporting function, comprising a metal bipolar plate, wherein a limit groove is provided at the edge of the metal bipolar plate, and a limit rod is concentrically arranged in the limit groove, wherein the feature is: A plurality of collecting terminals are sleeved on the limit rod, and the collecting terminals include two collecting plates and a connecting plate. The two collecting plates are arranged at the same end of the connecting plate and a gap matching the metal bipolar plate is left between the collecting plates. The two collecting plates are electrically connected to the positive and negative plates of the metal bipolar plate respectively. A through hole matching the limit rod is provided on the collecting plate, and the connecting plate is electrically connected to the integrated box.

2. The bipolar plate collection structure with supporting function according to claim 1 is characterized in that: An anti-slip sheet is provided at the end of the collection sheet, and convex points are provided on the opposite sides of the anti-slip sheet. A convex edge is provided on the metal bipolar plate, and a groove matching the convex point is provided on the convex edge.

3. The bipolar plate collection structure with supporting function according to claim 2 is characterized in that: The anti-dropping sheet and the end of the collecting sheet are overlapped to form a thickened portion.

4. The bipolar plate collection structure with supporting function according to claim 2 is characterized in that: There are at least two protrusions.

5. The bipolar plate collection structure with supporting function according to claim 1 is characterized in that: An insulating layer is pasted on the outer surface of the collecting terminal.

6. The bipolar plate collection structure with supporting function according to claim 5 is characterized in that: The insulating layer is made of pen material.

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