Electrode plate frame structure capable of reducing flow resistance of common flow channel of flow battery stack

Abstract

The utility model discloses an electrode plate frame structure capable of reducing the flow resistance of a common flow channel of a flow battery stack, which comprises frame plates, the outer walls of the frame plates are provided with liquid flowing holes, the liquid flowing holes are circular truncated cone-shaped, a plurality of frame plates are mutually stacked and fixed, the directions of the liquid flowing holes are the same, and the frame plates are made of acid-base anti-corrosion materials. Due to the fact that the notches of the liquid flowing holes are in the shapes of the circular truncated cones, when the multiple circular-truncated-cone-shaped liquid flowing holes are in butt joint in the same direction, a public flow channel can be formed, the structure with one end larger than the other end can serve as a Tesla valve structure, and therefore the effect of limiting backflow can be achieved; therefore, the electrolyte can basically flow in one direction in the public flow channel, additional flow resistance caused by factors such as gravity or backflow and the like can be reduced, and the efficiency of the galvanic pile is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of liquid flow battery, specifically relates to an electrode plate frame structure capable of reducing the flow resistance of the common flow channel of the liquid flow battery stack. BACKGROUND

[0002] The structural design and optimization research of the stack components of the liquid flow battery is one of the important ways to improve the flow performance of the electrolyte in the battery and to improve the power density and reliability of the stack, and the flowability of the electrolyte is directly related to the flow resistance in the stack.

[0003] At present, the structural design of the stack in the liquid flow battery is not much researched, especially the relationship between the flow resistance and the structural design is not very deep. The flow performance and distribution uniformity of the electrolyte are mainly improved by designing the shunt channel in the electrode plate frame, increasing the flow channel on the electrode plate, and engraving the flow channel on the electrode. The electrolyte flowability in the entire common flow channel of the stack is improved by optimizing and improving the common flow hole structure of the electrode plate frame in the application, the flow resistance in the common flow channel of the stack is reduced, and the performance of the stack is improved and the pump consumption is reduced. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model aims to provide an electrode plate frame structure capable of reducing the flow resistance of the common flow channel of the liquid flow battery stack, which has the advantage of being convenient to use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an electrode plate frame structure capable of reducing the flow resistance of the common flow channel of the liquid flow battery stack, comprising a frame plate, a flow hole is formed in the outer wall of the frame plate, the flow hole is a circular truncated cone, a plurality of frame plates are stacked and fixed, and the flow holes have the same orientation, the frame plate is made of an acid and alkali corrosion resistant material.

[0006] The above-mentioned technical scheme can prevent backflow. Since the notch shape of the flow hole is a circular truncated cone, the multiple circular truncated flow holes are connected in the same direction to form a common flow channel, and the structure of one end being large and the other end being small can function as a Tesla valve to limit backflow, so that the electrolyte can basically flow in one direction in the common flow channel, and the additional flow resistance caused by gravity or backflow can be reduced.

[0007] Preferably, a flow groove is formed on one side of the frame plate close to the small hole of the flow hole.

[0008] The above-mentioned technical scheme can guide the flow. The flow hole and the flow groove are connected to allow the electrolyte to flow, thereby providing a channel for the flow of the electrolyte.

[0009] Preferably, the outer wall of the frame plate is provided with a shunt channel communicated with the flow liquid groove.

[0010] Through the technical scheme, the outlet area is increased, the shunt channel increases the outlet area of the flow liquid groove, and the area of the flow liquid is increased.

[0011] Preferably, the outer wall of the shunt channel is fixedly connected with a plurality of partition blocks, and the intervals of the partition blocks are the same.

[0012] Through the technical scheme, the flow liquid is evenly distributed when the electrolyte flows.

[0013] Preferably, the middle part of the frame plate is hollow, and the plurality of frame plates are stacked to form a space.

[0014] Through the technical scheme, the space formed by the plurality of frame plates is used to place the diaphragm of the electric pile, so that the electric pile is divided into two spaces.

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] 1. The slot shape of the flow liquid hole is a circular truncated cone, so that the plurality of circular truncated flow liquid holes are connected in the same direction to form a common flow channel, and the structure of one end large and one end small can be used as a Tesla valve to limit backflow, so that the electrolyte basically flows in one direction in the common flow channel, the additional flow resistance caused by gravity or backflow is reduced, and the efficiency of the electric pile is improved.

[0017] 2. The electrolyte pump consumption is reduced, the manufacturing is simple, and the original electrode plate frame design can be slightly modified. DETAILED DESCRIPTION

[0018] Figure 1 It is a schematic view of the main structure of the utility model;

[0019] Figure 2 It is a schematic view of the frame plate structure of the utility model;

[0020] Figure 3 It is a schematic view of the back structure of the frame plate of the utility model;

[0021] Figure 4 It is a schematic view of the main structure of the utility model.

[0022] In the drawing: 1, frame plate; 2, flow liquid hole; 3, flow liquid groove; 4, shunt channel; 5, partition block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0024] Embodiment one:

[0025] Please refer to Figures 1-4 The utility model provides a technical scheme: an electrode plate frame structure capable of reducing the flow resistance of the common flow channel of the flow battery stack, comprising a frame plate 1, a flow liquid hole 2 is formed in the outer wall of the frame plate 1, the flow liquid hole 2 is circular truncated cone, a plurality of frame plates 1 are fixed by mutual stacking, and the directions of the flow liquid holes 2 are same, the frame plate 1 adopts acid and alkali anticorrosion material.

[0026] In the embodiment, since the notch shape of the flow liquid hole 2 is circular truncated cone, when a plurality of circular truncated cone flow liquid holes 2 are connected in the same direction, a common flow channel is formed, and the structure of one end being large and the other end being small can play the structure of Tesla valve, so that the effect of limiting backflow can be achieved, so that the electrolyte can basically flow in one direction in the common flow channel, and the additional flow resistance caused by gravity or backflow and the like can be reduced.

[0027] Embodiment two:

[0028] Please refer to Figure 3 On the basis of embodiment one, the utility model provides a technical scheme: a flow liquid groove 3 is formed in the side of the frame plate 1 close to the small hole of the flow liquid hole 2, and a shunt channel 4 is formed in the outer wall of the frame plate 1 and communicated with the flow liquid groove 3.

[0029] In the embodiment, the flow liquid hole 2 and the flow liquid groove 3 are communicated, so that the electrolyte can flow, thereby providing a channel for the flow of the electrolyte, and the shunt channel 4 increases the outlet area of the flow liquid groove 3, thereby increasing the area of the flow liquid.

[0030] Embodiment three:

[0031] Please refer to Figure 3 On the basis of embodiment one and embodiment two, the utility model provides a technical scheme: a plurality of separation blocks 5 are fixedly connected to the outer wall of the shunt channel 4, the intervals of each separation block 5 are same, the middle part of the frame plate 1 is hollow, and a plurality of frame plates 1 are stacked and surround a space.

[0032] In the embodiment, the separation blocks 5 on the shunt channel 4 can uniformly separate the electrolyte when the electrolyte flows, the diaphragm of the stack is placed in the space surrounded by the stacked plurality of frame plates 1, so that the two sides of the stack are separated, thereby dividing the space into two spaces.

[0033] The working principle and use process of the utility model: because the slot shape of flow liquid hole 2 is circular truncated cone, so multiple circular truncated cone flow liquid holes 2 are butt-jointed in the same direction, a common flow channel is formed, and the structure of one end big and one end small can play the structure of Tesla valve, thereby the effect of limiting backflow can be played, thereby the electrolyte can be guaranteed to flow basically unidirectionally in the common flow channel, the additional flow resistance caused by gravity or backflow and other factors can be reduced, the communication between flow liquid hole 2 and flow liquid groove 3 can make electrolyte flow, thereby providing a channel for the flow of electrolyte, the outlet area of flow liquid groove 3 is increased by shunt channel 4, thereby the area of flow liquid is increased, the electrolyte can be evenly separated by the separation block 5 on the shunt channel 4 when the electrolyte flows, the diaphragm of the battery stack is placed in the space surrounded by the multiple frame plates 1 after stacking, so that the two sides of the battery stack are separated, thereby dividing it into two spaces.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An electrode plate frame structure capable of reducing the flow resistance of the common flow channel of a flow battery stack, comprising a frame plate (1), an outer wall of the frame plate (1) is provided with a flow liquid hole (2), the flow liquid hole (2) is a circular truncated cone, a plurality of frame plates (1) are fixedly stacked with each other, and the flow liquid holes (2) are in the same direction, the frame plate (1) is made of an acid-alkali corrosion-resistant material, a flow liquid groove (3) is formed on one side of the frame plate (1) close to the small hole of the flow liquid hole (2), a shunt channel (4) in communication with the flow liquid groove (3) is formed in the outer wall of the frame plate (1), a plurality of partition blocks (5) are fixedly connected to the outer wall of the shunt channel (4), and the intervals of each partition block (5) are the same.

2. The electrode plate frame structure capable of reducing the flow resistance of the common flow channel of the flow battery stack of claim 1, wherein: The middle part of the frame plate (1) is hollow, and a plurality of frame plates (1) are stacked to surround a space.

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