An ultra-thin electrode plate frame single-section combined structure

Abstract

The utility model discloses a kind of ultra-thin electrode plate frame single section combination structure, including positive frame plate, the main flow passage one is opened in the side outer wall of the positive frame plate, the branch flow passage one is opened in the side outer wall of the positive frame plate, and the groove depth of branch flow passage one is one half of main flow passage one, the main flow passage two is opened in the other side outer wall of the positive frame plate, the branch flow passage two is opened in the other side outer wall of the positive frame plate, and the groove depth of branch flow passage two is one half of main flow passage two. When designing structure, the groove depth of branch flow passage one is one half of main flow passage one, and the groove depth of branch flow passage two is one half of main flow passage two, so on the premise of guaranteeing main flow passage depth, reduce the thickness of single battery combination structure formed by positive and negative electrode plate frame.

Description

Technical Field

[0001] This utility model belongs to the field of flow battery technology, specifically relating to an ultra-thin electrode plate frame single-cell combination structure. Background Technology

[0002] Flow batteries are pollution-free chemical energy storage batteries with high capacity, recyclability and long service life. The main components of a flow battery stack are end plates, current collectors, bipolar plates, electrode frames, electrodes, membranes and seals. Among them, the electrode frames are the key materials of the stack, and their size directly determines the volume and weight of the stack.

[0003] In flow battery stacks, flow channels need to be engraved on the electrode plates to ensure the uniform flow of electrolyte in the electrodes. Because the main flow channels need to have a certain depth, the two electrode plates of the positive and negative electrodes cannot be made very thin, and the thickness of the stack cannot be reduced. Therefore, reducing the size of the stack mainly depends on how to reduce the thickness of the electrode plates, which will be one of the future development directions of the stack. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an ultra-thin electrode plate frame single-section combination structure, which has the advantage of reducing the volume of the fuel cell stack.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an ultra-thin electrode plate frame single-section assembly structure, including a positive electrode frame plate, a main flow channel one is formed on one side outer wall of the positive electrode frame plate, a branch flow channel one is formed on one side outer wall of the positive electrode frame plate, and the groove depth of the branch flow channel one is half that of the main flow channel one; a main flow channel two is formed on the other side outer wall of the positive electrode frame plate, a branch flow channel two is formed on the other side outer wall of the positive electrode frame plate, and the groove depth of the branch flow channel two is half that of the main flow channel two.

[0006] With the above technical solution, when designing the structure, the groove depth of branch channel one is half that of main channel one, and the groove depth of branch channel two is half that of main channel two. In this way, the thickness of the single-cell battery assembly structure composed of positive and negative electrode plates can be reduced while ensuring the depth of the main channel.

[0007] Preferably, a diameter-changing platform is provided between the first branch channel and the first main channel, and a diameter-changing platform is also provided between the second branch channel and the second main channel.

[0008] Through the above technical solution, the variable diameter stage mainly serves to smoothly transition the depth of the main flow channel on the electrode plate frame into the depth of the branch flow channel.

[0009] Preferably, a flow channel hole is provided between the main flow channel one and the branch flow channel two.

[0010] Through the above technical solution, the flow channel holes mainly provide electrolyte for the main flow channel one and branch flow channel two of the positive electrode frame plate and the negative electrode frame plate.

[0011] Preferably, a negative electrode frame is fixedly connected to one side of the positive electrode frame on the main channel two.

[0012] With the above technical solution, the negative electrode frame plate only contains two parts: the main flow channel 2 and the branch flow channel 2, and the entire negative electrode frame plate is embedded in the positive electrode frame plate.

[0013] Preferably, an exchange membrane is fixedly connected to the inner wall of the positive electrode frame.

[0014] The above technical solution can achieve the function of conducting electricity. After the negative ions pass through the exchange membrane, they will combine with the positive ions on the other side, thereby achieving the function of conducting electricity.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. When designing the structure, the depth of branch channel one is half that of main channel one, and the depth of branch channel two is half that of main channel two. This way, the thickness of the single-cell battery assembly structure composed of positive and negative electrode plates can be reduced while ensuring the depth of the main channel.

[0016] 2. The variable diameter stage mainly serves to smoothly transition the depth of the main channel on the electrode plate frame to the depth of the branch channel. The channel holes mainly provide electrolyte for the main channel one and branch channel two of the positive electrode frame and the negative electrode frame. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the other side of the main body of this utility model; Figure 3 This is a schematic cross-sectional view of the main body of this utility model.

[0018] In the diagram: 1. Positive electrode frame; 2. Flow channel hole; 3. Main flow channel one; 4. Branch flow channel one; 5. Variable diameter platform; 6. Negative electrode frame; 7. Main flow channel two; 8. Branch flow channel two; 9. Exchange membrane. Detailed Implementation

[0019] 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.

[0020] Example 1: Please see Figures 1-3 This utility model provides a technical solution: an ultra-thin electrode plate frame single-section assembly structure, including a positive electrode frame plate 1, a main flow channel 3 is opened on one side of the outer wall of the positive electrode frame plate 1, a branch flow channel 4 is opened on one side of the outer wall of the positive electrode frame plate 1, and the groove depth of the branch flow channel 4 is half of that of the main flow channel 3, a second main flow channel 7 is opened on the other side of the outer wall of the positive electrode frame plate 1, a second branch flow channel 8 is opened on the other side of the outer wall of the positive electrode frame plate 1, and the groove depth of the second branch flow channel 8 is half of that of the second main flow channel 7.

[0021] In this implementation scheme, when designing the structure, the groove depth of branch channel 4 is half that of main channel 3, and the groove depth of branch channel 8 is half that of main channel 7. This way, the thickness of the single-cell battery assembly structure composed of positive and negative electrode plates can be reduced while ensuring the depth of the main channel.

[0022] Example 2: Please see Figures 1-3 Based on Embodiment 1, this utility model provides a technical solution: a variable diameter platform 5 is provided between the branch channel 1 4 and the main channel 1 3, and a variable diameter platform 5 is also provided between the branch channel 2 8 and the main channel 2 7, and a channel hole 2 is provided between the main channel 1 3 and the branch channel 2 8.

[0023] In this embodiment, the variable diameter stage 5 mainly serves to smoothly transition the depth of the main channel on the electrode plate frame to the depth of the branch channel. The channel hole 2 mainly provides electrolyte for the main channel 3 and branch channel 8 of the positive electrode frame plate 1 and the negative electrode frame plate 6.

[0024] Example 3: Please see Figures 1-3 Based on Embodiment 1 and Embodiment 2, this utility model provides a technical solution: a negative electrode frame plate 6 is fixedly connected to one side of the positive electrode frame plate 1 located in the main channel 2 7, and an exchange membrane 9 is fixedly connected to the inner wall of the positive electrode frame plate 1.

[0025] In this embodiment, the negative electrode frame plate 6 contains only two parts: the main flow channel 2 7 and the branch flow channel 2 8. The entire negative electrode frame plate 6 is embedded in the positive electrode frame plate 1. After the negative ions pass through the exchange membrane 9, they will combine with the positive ions on the other side, thereby playing a role in conducting electricity.

[0026] The working principle and usage process of this utility model are as follows: When designing the structure, the depth of branch channel 4 is half that of main channel 3, and the depth of branch channel 8 is half that of main channel 7. This allows for a reduction in the thickness of the single-cell battery assembly structure composed of positive and negative electrode plates while ensuring the depth of the main channel. The variable diameter platform 5 mainly serves to smoothly transition the depth of the main channel on the electrode plate to the depth of the branch channel. The channel hole 2 mainly provides electrolyte for the main channel 3 and branch channel 8 of the positive electrode plate 1 and negative electrode plate 6. The negative electrode plate 6 only contains the main channel 7 and branch channel 8, and the entire negative electrode plate 6 is embedded in the positive electrode plate 1. After the negative ions pass through the exchange membrane 9, they will combine with the positive ions on the other side, thereby achieving conductivity.

[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 these 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.

Claims

1. A single-section assembly structure of an ultrathin electrode plate frame, comprising a positive electrode frame plate (1), characterized in that: One side of the positive electrode frame plate (1) has a main channel 1 (3) and a branch channel 1 (4) on one side of the positive electrode frame plate (1). The depth of the branch channel 1 (4) is half that of the main channel 1 (3). The other side of the positive electrode frame plate (1) has a main channel 2 (7) and a branch channel 2 (8) on the other side of the positive electrode frame plate (1). The depth of the branch channel 2 (8) is half that of the main channel 2 (7).

2. The single-section assembly structure of an ultrathin electrode plate frame according to claim 1, characterized in that: A variable diameter platform (5) is provided between the branch channel one (4) and the main channel one (3), and a variable diameter platform (5) is also provided between the branch channel two (8) and the main channel two (7).

3. The single-section assembly structure of an ultrathin electrode plate frame according to claim 1, characterized in that: A flow channel hole (2) is provided between the main flow channel one (3) and the branch flow channel two (8).

4. The single-section assembly structure of an ultrathin electrode plate frame according to claim 1, characterized in that: The positive electrode frame (1) is fixedly connected to the negative electrode frame (6) on one side of the main channel (7).

5. The single-section assembly structure of an ultrathin electrode plate frame according to claim 1, characterized in that: An exchange membrane (9) is fixedly connected to the inner wall of the positive electrode frame (1).

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