Flow battery stack and supporting and locking assembly thereof

Abstract

The utility model discloses a flow cell stack and its support locking assembly, the support locking assembly comprises: a support rod body, the support rod body comprises: a support sleeve and at least one support cylinder, the support cylinder is connected with the support sleeve through a plurality of support pieces, the support sleeve is connected with the support sleeve through a plurality of support pieces, and the support piece is connected with the support rod body. The two ends of the supporting rod body are respectively propped against the inner sides of the end plates on the two sides of the battery stack; and the connecting screw rod is inserted into the supporting cylinder, the connecting screw rod is tightly matched with the supporting sleeve, and the screw rod is matched with a connecting hole formed in the end plate so as to be used for locking the battery stack. The two ends of the supporting rod body abut against the two end plates, so that the end plates are supported, bending deformation of the end plates during fastening is reduced, the overall sealing performance of the galvanic pile is improved, the inner side face of the supporting rod body makes contact with an inner component of the galvanic pile, and therefore the inner component is supported during carrying; displacement of the internal components in the carrying process is reduced, and destructive damage to the galvanic pile is avoided.

Description

Technical Field

[0001] This utility model relates to the field of flow battery technology, and in particular to a flow battery stack and its supporting locking assembly. Background Technology

[0002] Vanadium redox flow batteries (VRBs) offer advantages such as flexible design, long cycle life, high safety, and environmental friendliness, making them one of the most promising technologies for addressing the intermittent instability of renewable energy sources. The VRB stack is a core component of VRBs. Currently, mainstream VRB stacks typically have a rectangular structure. During stack fastening, uneven stress can easily cause slight deformation of the end plates, leading to bulges and potential electrolyte leakage. Furthermore, the locating pins commonly used for stack assembly are made of stainless steel. These pins must be removed after stack assembly to prevent short circuits during operation, which increases working time and poses a risk of component displacement during transport. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a flow battery stack and its supporting locking assembly, which has the advantages of preventing slight deformation of the end plate and preventing the stack components from shifting.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] According to a first aspect of the present disclosure, a flow battery stack support and locking assembly is provided, comprising:

[0006] A support rod body, comprising: a support sleeve and at least one support cylinder, wherein the support cylinder is connected to the support sleeve via a plurality of support plates, and both ends of the support rod body respectively abut against the inner sides of the end plates on both sides of the battery stack; and,

[0007] A connecting screw is inserted into the support cylinder. The connecting screw is tightly fitted with the support sleeve, and the screw is adapted to a connecting hole provided on the end plate for locking the battery stack.

[0008] To achieve the above technical solution, during the assembly of the battery stack, several supporting and locking components are set between the two end plates. The two ends of the support rod abut against the two end plates, thereby supporting the end plates and reducing bending deformation during fastening. This helps improve the overall sealing of the battery stack. The inner side of the support rod contacts the internal components of the battery stack, thereby supporting the internal components during transportation and reducing displacement of the internal components during transportation, thus avoiding destructive damage to the battery stack. The connecting screw cooperates with the connecting holes set on the end plates to play a limiting and locking role, thereby eliminating the steps of setting positioning pins and removing positioning pins in the traditional process, saving assembly time and improving assembly efficiency.

[0009] In some exemplary embodiments, the support plates are evenly arranged in 3-8 groups around the support cylinder.

[0010] In some exemplary embodiments, the thickness of the support sheet is 3-5 mm.

[0011] In some exemplary embodiments, the support cylinder is provided in 1-3 sets.

[0012] The above technical solution improves the overall structural strength and helps to enhance support stability.

[0013] In some exemplary embodiments, the support rod is a one-piece injection molded structure.

[0014] The above technical solution facilitates processing and shaping.

[0015] In some exemplary embodiments, the support rod is made of polyoxymethylene or polyethylene.

[0016] According to a second aspect of the present disclosure, a flow battery stack is provided, comprising:

[0017] The internal component has end plates on both sides, and the outer periphery of the end plates is provided with a plurality of connecting holes near the edge.

[0018] A plurality of support locking assemblies as described in the first aspect are arranged at intervals around the inner member, the two ends of the support rod abut against the inner sides of the two end plates respectively, and the inner side of the support rod abuts against the side of the inner member, and the connecting screw passes through the connecting hole.

[0019] In some exemplary embodiments, a plurality of locking bolts are also provided between the two end plates.

[0020] In summary, compared with the prior art, this utility model has the following beneficial effects:

[0021] This utility model provides a flow battery stack and its support and locking assembly. The support and locking assembly includes: a support rod, which includes a support sleeve and at least one support cylinder. The support cylinder is connected to the support sleeve via several support plates, and both ends of the support rod abut against the inner sides of the end plates on both sides of the battery stack; and a connecting screw inserted into the support cylinder. The connecting screw is tightly fitted with the support sleeve, and the screw is adapted to a connecting hole provided on the end plate for locking the battery stack. During battery stack assembly, several support and locking components are installed between the two end plates. The two ends of the support rod abut against the end plates, thereby supporting the end plates and reducing bending deformation during fastening. This improves the overall sealing of the battery stack. The inner side of the support rod contacts the internal components of the battery stack, supporting them during handling and reducing displacement, thus preventing damage to the battery stack. The connecting screw engages with the connecting holes on the end plates, providing a limiting and locking function. This eliminates the need for positioning pins and removing them in traditional processes, saving assembly time and improving assembly efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the supporting locking component in an embodiment of this utility model.

[0023] Figure 2 This is a front view of the support rod in an embodiment of this utility model.

[0024] Figure 3 This is a schematic diagram of the structure of the liquid battery stack in an embodiment of this utility model.

[0025] The numbers and letters in the diagram represent the names of the corresponding components:

[0026] 10. Support rod body; 11. Support sleeve; 12. Support cylinder; 13. Support plate; 20. Connecting screw; 30. Internal component; 31. End plate; 32. Connecting hole; 33. Locking bolt. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1 to 2As shown in the figure, in the first aspect of the embodiment of the present utility model, a liquid flow battery stack support and locking assembly is provided, including: a support rod body 10, the support rod body 10 includes: a support sleeve 11 and at least one support cylinder 12, the support cylinder 12 is connected to the support sleeve 11 through a plurality of support pieces 13, and both ends of the support rod body 10 are respectively in contact with the inner sides of the end plates 31 on both sides of the battery stack; and a connecting screw 20 inserted into the support cylinder 12, the connecting screw 20 is in close fit with the support sleeve 11, and the screw is adapted to the connecting hole 32 provided on the end plate 31 for locking the battery stack.

[0029] Specifically, the support rod body 10 is an integrally injection-molded structure for easy processing. For example, the support rod body 10 can be injection-molded from polyoxymethylene or polyethylene. Preferably, the support rod body 10 is made of polyoxymethylene, so as to have higher strength. It can be understood that in some embodiments, in order to ensure the connection strength between the support cylinder 12 and the connecting screw 20 and facilitate processing, a positioning groove adapted to the connecting screw 20 can be provided in the injection mold, and the connecting screw 20 is placed in the positioning groove, and the support rod body 10 is directly injection-molded on the connecting screw 20.

[0030] One to three groups of support cylinders 12 can be provided. In this embodiment, it is preferably to provide 2 groups of support cylinders 12, and 3 to 8 groups of support pieces 13 are evenly arranged around the support cylinder 12. In this embodiment, it is preferably to provide 6 groups. In some embodiments, multiple support pieces 13 can also be arranged in a "rice" shape, and the thickness of the support piece 13 is usually set to 3-5 mm. In this embodiment, it is preferably set to 4 mm, and at the same time, the thickness of the support cylinder 12 can be set to be the same as that of the support piece 13. In some embodiments, when there are more than 2 groups of support cylinders 12, adjacent support cylinders 12 can also be connected through support pieces 13, so as to effectively improve the overall structural strength and is beneficial to improving the support stability.

[0031] When assembling the battery stack, a number of support and locking assemblies are provided between the two end plates 31, and both ends of the support rod body 10 are in contact with the two end plates 31, so as to realize the support for the end plates 31, reduce the bending deformation of the end plates 31 during fastening, and further be beneficial to improving the overall sealing performance of the stack. The inner side surface of the support rod body 10 is in contact with the internal components 30 of the stack, so as to support the internal components 30 during handling, reduce the displacement of the internal components 30 during handling, and avoid causing destructive damage to the stack; and the connecting screw 20 cooperates with the connecting hole 32 provided on the end plate 31 to play a role of limiting and locking, so as to save the steps of setting a positioning pin for positioning and pulling out the positioning pin in the traditional process, save the assembly time, and improve the assembly efficiency.

[0032] Such as Figure 3As shown, a second aspect of the present invention provides a flow battery stack, comprising: an inner component 30, with end plates 31 on both sides of the inner component 30, and a plurality of connecting holes 32 circumferentially arranged around the outer periphery of the end plates 31 near their edges; a plurality of support and locking assemblies as described in the first aspect, the plurality of support and locking assemblies being spaced apart around the inner component 30, with the two ends of a support rod 10 respectively abutting against the inner sides of the end plates 31, and the inner sides of the support rod 10 supportingly abutting against the sides of the inner component 30, and a connecting screw 20 passing through the connecting holes 32.

[0033] The internal components 30 include current collectors, carbon felt, bipolar plate frames, bipolar plates, proton exchange membranes, and other fuel cell stack components. For ease of description, the stacked fuel cell stack components are collectively referred to as internal components 30. The portion between the two end plates 31 without supporting locking components is also provided with several locking bolts 33. The locking bolts 33 and the connecting bolts cooperate to achieve locking and fixing of the end plates 31 and internal components 30. Typically, both the locking bolts 33 and the connecting bolts are double-ended bolts.

[0034] By setting several support and locking components between the two end plates 31, the two ends of the support rod 10 abut against the two end plates 31, thereby supporting the end plates 31 and reducing bending deformation of the end plates 31 during fastening, which in turn helps to improve the overall sealing of the fuel cell stack. The inner side of the support rod 10 contacts the internal components 30 of the fuel cell stack, thereby supporting the internal components 30 during transportation and reducing displacement of the internal components 30 during transportation, thus avoiding destructive damage to the fuel cell stack. The connecting screw 20 cooperates with the connecting hole 32 set on the end plate 31 to play a limiting and locking role. With the positioning and locking function of the locking bolt 33, the steps of setting positioning pins and removing positioning pins required in the traditional process can be eliminated, saving assembly time and improving assembly efficiency.

[0035] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A flow battery stack support latching assembly, comprising: The support rod body comprises a support sleeve and at least one support cylinder connected to the support sleeve by a plurality of support pieces, and the two ends of the support rod body respectively abut the inner side of the end plates on both sides of the battery stack. A connecting screw rod is inserted into the support cylinder, the connecting screw rod is tightly matched with the support sleeve, and the screw rod is matched with the connecting hole provided on the end plate for locking the battery stack. The support pieces are uniformly provided around the support cylinder in 3-8 groups.

2. The flow battery stack support lock assembly of claim 1, wherein, The thickness of the support pieces is 3-5 mm.

3. The flow battery stack support lock assembly of claim 1, wherein, The support cylinder is provided with 1-3 groups.

4. The flow battery stack support lock assembly of claim 1, wherein, The support rod body is integrally injection molded.

5. The flow battery stack support lock assembly of claim 1, wherein, The support rod body is made of polyformaldehyde or polyethylene.

6. The flow battery stack support lock assembly of claim 1, wherein, The inner member is provided with end plates on both sides, and the outer periphery of the end plates is annularly provided with a plurality of connecting holes near the edge.

7. A flow battery stack, characterized by A plurality of support locking assemblies as claimed in any one of claims 1-6 are annularly and spacedly provided around the inner member, the two ends of the support rod body respectively abut the inner side of the two end plates, the inner side of the support rod body supports and abuts the side of the inner member, and the connecting screw rod is inserted into the connecting hole. A plurality of locking bolts are further provided between the two end plates. ​ 8. The flow battery stack of claim 7, wherein, ​

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