Bipolar plate and runner plate combined tool for flow battery

Abstract

The utility model discloses a bipolar plate and runner plate combined tool for a flow battery, and belongs to the technical field of new energy. The tool mainly comprises a first tray, a base plate and a positioning piece, the positioning piece is connected to the first tray, the base plate and the bipolar plate can be stacked on the first tray and are in positioning fit with the positioning piece, a positioning part suitable for containing a runner plate is arranged in the middle of the base plate, and the runner plate is arranged on the positioning part of the base plate. And when the base plate and the bipolar plate are both positioned and matched with the positioning piece, the runner plate can be attached to the bipolar plate in an aligned manner, so that the runner plate cannot deviate relative to the bipolar plate in the bonding process of the runner plate and the bipolar plate. According to the bipolar plate and runner plate combined tool for the flow battery, the problem that the runner plate is easy to deviate relative to the bipolar plate in the bonding process of the runner plate and the bipolar plate can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, in particular to a bipolar plate and flow channel plate assembly tool for a liquid flow battery. Background Art

[0002] Liquid flow batteries are mainly composed of an electrochemical reaction stack (composed of multiple single cells connected in series) and storage tanks for storing positive and negative electrode electrolytes.

[0003] In an electrochemical reactor stack, the cut manifold plate cannot be installed independently between the bipolar plate and the electrode due to its special shape. The manifold plate must first be bonded to the bipolar plate and then installed together with the bipolar plate. Because the glue used to bond the manifold plate to the bipolar plate must be resistant to acid and alkali corrosion, quick-drying glue cannot be used. The glue requires subsequent heating and pressurization, and only after a period of time will it solidify and adhere the manifold plate to the bipolar plate. During these subsequent processes, the manifold plate is prone to positional displacement relative to the bipolar plate due to the lack of adhesion between the two plates. This can cause interference between the manifold plate and adjacent components during assembly, preventing proper fit.

[0004] Therefore, it is necessary to provide a bipolar plate and flow channel plate assembly tool for a liquid flow battery. Utility Model Content

[0005] Based on the above problems existing in the prior art, the purpose of the embodiment of the present invention is to provide a bipolar plate and flow channel plate combination tooling for liquid flow batteries, which can solve the problem that the flow channel plate is easily offset relative to the bipolar plate during the bonding process.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a bipolar plate and flow plate combination tooling for a liquid flow battery, including a tray one, a pad and a positioning piece, the positioning piece is connected to the tray one, the pad and the bipolar plate can be stacked on the tray one and positioned with the positioning piece, and a positioning portion suitable for receiving the flow plate is provided in the middle of the pad. When the flow plate is received in the positioning portion of the pad, and the pad and the bipolar plate are both positioned and matched with the positioning piece, the flow plate can be aligned and attached to the bipolar plate, so that the flow plate cannot be offset relative to the bipolar plate during the bonding process.

[0007] Furthermore, at least one flow channel plate is attached to the bipolar plate along with the backing plate, and the flow channel plate is attached to the bipolar plate along with the backing plate to form a ligand 1, which includes a bipolar plate, at least one flow channel plate and at least one backing plate.

[0008] Furthermore, the bipolar plate and flow channel plate combination tooling for the liquid flow battery also includes a base plate and a tray 2. The base plate and tray 2 can be stacked on the tray 1 and positioned with the positioning piece. At least one mate 1 is stacked between the tray 1 and the tray 2, and the base plate is clamped between two adjacent mates 1 and / or between the mate 1 and the tray 2.

[0009] Furthermore, the positioning piece is a pin structure, the tray is provided with a positioning hole 1 suitable for plugging and cooperating with the positioning piece, the pad is provided with a positioning hole 2 suitable for plugging and cooperating with the positioning piece, the bottom plate is provided with a positioning hole 3 suitable for plugging and cooperating with the positioning piece, and the tray 2 is provided with a positioning hole 4 suitable for plugging and cooperating with the positioning piece.

[0010] Furthermore, the positioning piece cooperates with the outer edge of the bipolar plate.

[0011] Furthermore, the positioning portion is a positioning groove formed hollow in the middle of the pad, and a plurality of positioning protrusions are arranged in the positioning groove at intervals along the length direction of the flow channel plate, and the positioning protrusions can be abutted and matched with the long side of the flow channel plate.

[0012] Furthermore, the positioning protrusions are engaged with a plurality of serrated grooves provided on the long sides of the flow channel plate in a one-to-one correspondence.

[0013] Furthermore, a positioning wall is provided in the positioning groove along the width direction of the flow channel plate, and the short side of the flow channel plate abuts against the positioning wall in the positioning groove.

[0014] Furthermore, the contour shape of the tray 1 is adapted to the contour shape of the bipolar plate.

[0015] Furthermore, the size of the tray 1 is larger than the size of the bipolar plate.

[0016] The beneficial effects of the utility model are:

[0017] The utility model provides a combined tooling of bipolar plates and flow plates for liquid flow batteries, which includes a tray one, a pad and a positioning piece. The positioning piece is connected to the tray one, and the pad and bipolar plate can be stacked on the tray one and positioned with the positioning piece, so that the flow plate can be aligned and attached to the bipolar plate and the flow plate cannot be offset relative to the bipolar plate during the bonding process.

[0018] The present invention further provides a bottom plate and a tray 2, which, on the one hand, can realize the bonding of multiple bipolar plates and flow channel plates at one time on the same tooling; on the other hand, it is convenient for the stacked bipolar plates and flow channels to be directly hot-pressed in cooperation with a press, thereby greatly increasing production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the bipolar plate and flow channel plate assembly tooling for a liquid flow battery provided in Example 1 of the present utility model.

[0021] Figure 2 This is a schematic diagram of the exploded view of the bipolar plate and flow channel plate assembly for a flow battery provided in Example 1 of the present invention.

[0022] Figure 3 This is a schematic diagram of the positional relationship between the pad and tray 1 provided in Example 1 of the present utility model.

[0023] Figure 4 This is a front view of the bipolar plate and flow channel plate assembly for a flow battery provided in Example 1 of the present invention when in use.

[0024] Figure 5 For the Figure 4 Cross-sectional view in the AA direction.

[0025] Figure 6 This is a schematic structural diagram of the pad provided in Example 1 of the present utility model.

[0026] Figure 7 The bipolar plate and flow channel plate assembly for a flow battery provided in the second embodiment of the present invention is used in Figure 5 Cross-sectional view showing the position.

[0027] Figure 8 The bipolar plate and flow channel plate assembly for a flow battery provided in the third embodiment of the present invention is used in Figure 5 Cross-sectional view showing the position.

[0028] Figure 9 This is a schematic diagram of the decomposition of the bipolar plate and flow channel plate when the bipolar plate and flow channel plate combination tooling for a liquid flow battery provided in Example 3 of the present utility model is in use.

[0029] Figure 10 The bipolar plate and flow channel plate assembly for a flow battery provided in the fourth embodiment of the present invention is used in Figure 5 Cross-sectional view showing the position.

[0030] Among them, the figure marks in the figure are: 100, bipolar plate; 200, flow channel plate; 1, tray one; 11, positioning hole one; 2, pad; 21, positioning hole two; 3, bottom plate; 31, positioning hole three; 4, tray two; 41, positioning hole four; 6, positioning part; 61, positioning protrusion; 62, positioning wall; 7, positioning piece. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] It should be noted that when an element is referred to as being “connected to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0033] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment," "in some embodiments," or "in some embodiments" appear in various places throughout this specification, not all references are to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0036] Example 1

[0037] Please refer to Figures 1 to 6As shown, the bipolar plate and flow channel plate assembly tooling for a liquid flow battery provided by the present invention is now described. The bipolar plate and flow channel plate assembly tooling for a liquid flow battery includes a tray 1, a pad 2, and a positioning member 7. The positioning member 7 is connected to the tray 1. The pad 2 and the bipolar plate 100 can be stacked on the tray 1 and positioned with the positioning member 7, so that the pad 2 or the bipolar plate 100 cannot move relative to the tray 1 along the stacking plane. A positioning portion 6 suitable for receiving the flow channel plate 200 is provided in the middle of the pad 2. When the flow channel plate 200 is received in the positioning portion 6 of the pad 2, and the pad 2 and the bipolar plate 100 are both positioned with the positioning member 7, the flow channel plate 200 can be aligned and attached to the bipolar plate 100, so that the flow channel plate 200 cannot be offset relative to the bipolar plate 100 during the bonding process. Figure 4 and Figure 5 As shown, in some embodiments, at least one flow channel plate 200 is adhered to the bipolar plate 100 along with the gasket 2, and the flow channel plate 200 is adhered to the bipolar plate 100 along with the gasket 2 to form a ligand one (not marked in the figure), and the ligand one includes a bipolar plate 100, at least one flow channel plate 200 and at least one gasket 2. Specifically, in this embodiment, the ligand one includes a bipolar plate 100, a flow channel plate 200 and a gasket 2, and a flow channel plate 200 is adhered to one side of the bipolar plate 100 along with the gasket 2.

[0038] like Figure 2 as well as Figure 5 As shown, in some embodiments, the combined bipolar plate and flow channel plate assembly for a liquid flow battery further includes a base plate 3 and a tray 2 4 . The base plate 3 and tray 2 4 can also be stacked on tray 1 1 and positioned with a positioning member 7 , preventing the backing plate 2 , base plate 3 , tray 2 4 , or bipolar plate 100 from moving relative to tray 1 1 along the stacking plane. At least one mate 1 is stacked between tray 1 1 and tray 2 4 , and the base plate 3 is sandwiched between two adjacent mates 1 and / or between mate 1 and tray 2 4 . This allows the combined bipolar plate and flow channel plate assembly for a liquid flow battery provided by the present invention to simultaneously bond and position the flow channel plate 200 to multiple bipolar plates 100 , saving costs and improving efficiency. Furthermore, the stacked bipolar plates, flow channels, and assembly are placed together under a press. The press can then directly compress tray 2 4 and perform a heat press on the bipolar plates and flow channel plates below, significantly increasing production efficiency. The strength of tray 1 and tray 2 4 is relatively high, and can meet the requirements of stacking and subsequent hot pressing. The strength of the bottom plate 3 is weaker than that of tray 2 4 .

[0039] like Figure 5 As shown, specifically, in this embodiment, a matching body 1 is stacked between tray 1 and tray 2 4 .

[0040] like Figure 2As shown, in some embodiments, the positioning member 7 is a pin structure, the pallet 1 is provided with a positioning hole 11 suitable for plugging and cooperating with the positioning member 7, the pad 2 is provided with a positioning hole 21 suitable for plugging and cooperating with the positioning member 7, the bottom plate 3 is provided with a positioning hole 31 suitable for plugging and cooperating with the positioning member 7, and the pallet 2 4 is provided with a positioning hole 41 suitable for plugging and cooperating with the positioning member 7, so that when the pad 2, the bottom plate 3 or the pallet 2 4 are stacked on the pallet 1 and each is plugged with the positioning member 7 through the positioning hole, the pallet 1, the pad 2, the bottom plate 3, the pallet 2 4 can be positioned and cooperated with the positioning member 7, so that the pad 2, the bottom plate 3 and the pallet 2 4 cannot move relative to the pallet 1 along the stacking plane.

[0041] like Figure 2 As shown, in some embodiments, holes are provided on the outer edge of the bipolar plate 100. The holes on the bipolar plate 100 can not only be used to position the bipolar plate 100 and other components of the electrochemical reactor stack when assembling the electrochemical reactor stack, but the holes on the bipolar plate 100 can also be plugged and positioned with the positioning members 7 in the bipolar plate and flow channel plate combination tooling for the liquid flow battery provided by the embodiment of the present invention. It can be understood that in other embodiments not shown in the figures, the bipolar plate 100 can also be positioned by other structures not limited to the plug-in positioning structure, such as: a groove positioning structure, a fastener positioning structure, etc.

[0042] like Figure 2 As shown, in some embodiments, the contour shape of the tray 1 is adapted to the contour shape of the bipolar plate 100 . Specifically, in this embodiment, the tray 1 is a rectangular plate structure adapted to the bipolar plate 100 .

[0043] like Figure 2 As shown, in some embodiments, the size of the tray 1 is larger than the size of the bipolar plate 100 so that the tray 1 can fully fit the bipolar plate 100, making it easier to evenly pressurize the bipolar plate 100 in the subsequent pressurization process.

[0044] In some embodiments, a receiving groove is provided on the back of the tray 1 to accommodate the tail end of the positioning member 7 of the pin structure to be received in the receiving groove, thereby keeping the back of the tray 1 flat.

[0045] like Figure 6 As shown, in some embodiments, the positioning portion 6 is a positioning groove formed in the hollow middle part of the pad 2, and a plurality of positioning protrusions 61 are arranged in the positioning groove at intervals along the length direction of the flow channel plate 200. The positioning protrusions 61 can be abutted and matched with the long side of the flow channel plate 200, so that the flow channel plate 200 is positioned and matched on the pad 2. More specifically, in this embodiment, a plurality of serrated grooves are provided on the long side of the flow channel plate 200, and the serrated grooves are engaged one by one with the positioning protrusions 61 on the positioning groove to achieve the stability of the positioning and matching of the flow channel plate 200 and the pad 2.

[0046] like Figure 6 As shown, in some embodiments, a positioning wall 62 is provided in the positioning groove along the width direction of the flow channel plate 200. When the flow channel plate 200 is retracted into the positioning groove, the short side of the flow channel plate 200 is abutted against the positioning wall 62 in the positioning groove to further stabilize the position of the flow channel plate 200 on the pad 2.

[0047] like Figure 5 As shown, in some embodiments, the pad 2 is a symmetrical split structure. It can be understood that in other embodiments not shown in the figures, the pad 2 can also be an asymmetrical split structure or an integrated structure.

[0048] like Figure 2 As shown, in some embodiments, the structure of tray 2 4 is the same as that of tray 1 1 .

[0049] Example 2

[0050] See also Figure 7 As shown, the difference between the bipolar plate and flow channel plate assembly tooling for a flow battery provided in the second embodiment of the present invention and the bipolar plate and flow channel plate assembly tooling for a flow battery provided in the first embodiment is:

[0051] In this second embodiment, two matching bodies 1 are stacked between tray 1 1 and tray 2 4 , with a bottom plate 3 provided between the two matching bodies. A bottom plate 3 is also provided between matching body 1 and tray 2 4 . It is understood that in other embodiments not shown, the number of matching bodies 1 stacked between tray 1 1 and tray 2 4 may also be three, four, or more.

[0052] Example 3

[0053] See also Figure 8 and Figure 9 As shown, the difference between the bipolar plate and flow channel plate assembly tooling for a flow battery provided in the third embodiment of the present invention and the bipolar plate and flow channel plate assembly tooling for a flow battery provided in the first embodiment is as follows:

[0054] In the third embodiment, the first mate includes a bipolar plate 100 , two flow channel plates 200 and two backing plates 2 . The two flow channel plates 200 and the two backing plates 2 are respectively attached to two opposite surfaces of the bipolar plate 100 .

[0055] Example 4

[0056] See also Figure 10 As shown, the difference between the bipolar plate and flow channel plate assembly tooling for a flow battery provided in the second embodiment of the present invention and the bipolar plate and flow channel plate assembly tooling for a flow battery provided in the first embodiment is:

[0057] In the fourth embodiment, the ligand 1 includes a bipolar plate 100, two flow channel plates 200 and two pads 2. The two flow channel plates 200 are respectively adhered to the two opposite surfaces of the corresponding bipolar plate 100 along with the two pads 2; and two ligands 1 are stacked between tray 1 1 and tray 2 4. It can be understood that in some other embodiments not shown in the figures, the number of ligands 1 stacked between tray 1 1 and tray 2 4 can also be three, four or more.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bipolar plate and flow channel plate assembly for a flow battery, characterized by: It includes a tray one, a pad and a positioning piece, the positioning piece is connected to the tray one, the pad and the bipolar plate can be stacked on the tray one and positioned with the positioning piece, and a positioning part suitable for receiving the flow channel plate is provided in the middle of the pad; when the flow channel plate is received in the positioning part of the pad, the pad and the bipolar plate are both positioned with the positioning piece, and the flow channel plate is aligned and fitted on the bipolar plate.

2. The bipolar plate and flow channel plate assembly for a flow battery according to claim 1, characterized in that: At least one flow channel plate is attached to the bipolar plate along with the backing plate, and the flow channel plate is attached to the bipolar plate along with the backing plate to form a first ligand, which includes a bipolar plate, at least one flow channel plate and at least one backing plate.

3. The bipolar plate and flow channel plate assembly for a flow battery according to claim 2, characterized in that: The bipolar plate and flow channel plate combination tooling for the liquid flow battery also includes a base plate and a tray 2. The base plate and tray 2 can be stacked on the tray 1 and positioned and matched with the positioning piece. At least one mate 1 is stacked between the tray 1 and the tray 2. The base plate is clamped between two adjacent mates 1 and / or between the mate 1 and the tray 2.

4. The bipolar plate and flow channel plate assembly for a flow battery according to claim 3, characterized in that: The positioning piece is a pin structure, and the tray is provided with a first positioning hole suitable for plugging and cooperating with the positioning piece, the pad is provided with a second positioning hole suitable for plugging and cooperating with the positioning piece, the bottom plate is provided with a third positioning hole suitable for plugging and cooperating with the positioning piece, and the tray is provided with a fourth positioning hole suitable for plugging and cooperating with the positioning piece.

5. The bipolar plate and flow channel plate assembly for a flow battery according to claim 4, characterized in that: The positioning piece cooperates with the outer edge of the bipolar plate.

6. The bipolar plate and flow channel plate assembly for a flow battery according to claim 1, characterized in that: The positioning portion is a positioning groove formed hollow in the middle of the pad, and a plurality of positioning protrusions are arranged in the positioning groove at intervals along the length direction of the flow channel plate. The positioning protrusions can be abutted and matched with the long sides of the flow channel plate.

7. The bipolar plate and flow channel plate assembly for a flow battery according to claim 6, characterized in that: The positioning protrusions are engaged with a plurality of sawtooth grooves provided on the long sides of the flow channel plate in a one-to-one correspondence.

8. The bipolar plate and flow channel plate assembly for a flow battery according to claim 6, characterized in that: A positioning wall is provided in the positioning groove along the width direction of the flow channel plate, and the short side of the flow channel plate abuts against the positioning wall in the positioning groove.

9. The bipolar plate and flow channel plate assembly for a flow battery according to claim 1, characterized in that: The outline shape of the tray 1 is adapted to the outline shape of the bipolar plate.

10. The bipolar plate and flow channel plate assembly for a flow battery according to claim 1, characterized in that: The size of the tray 1 is larger than that of the bipolar plate.

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