Flow battery SOC testing device

Abstract

The utility model discloses a flow battery SOC testing device which comprises a diaphragm and runner plates symmetrically arranged on two sides of the diaphragm, adhesive films are respectively arranged on two sides of each runner plate, an electrode cavity penetrating through the runner plates is arranged in the middles of the runner plates, and a liquid inlet cavity and a liquid outlet cavity are arranged on one side, deviating from the diaphragm, of each runner plate. The liquid inlet cavity and the liquid outlet cavity are respectively communicated with the electrode cavity; the liquid inlet cavity cover plate and the liquid outlet cavity cover plate are respectively matched with the liquid inlet cavity and the liquid outlet cavity, and the liquid inlet cavity cover plate and the liquid outlet cavity cover plate are respectively provided with a liquid inlet and a liquid outlet. And the runner plate has relatively high strength and relatively long service life, and meanwhile, the electrolyte can be uniformly shunted, so that the test precision is improved.

Description

Technical Field

[0001] The utility model belongs to the field of liquid flow battery technology, and in particular relates to a liquid flow battery SOC testing device. Background Art

[0002] Liquid flow battery is an electrochemical energy storage technology proposed in 1974 and is a new type of battery. Liquid flow battery consists of a battery stack unit, electrolyte, electrolyte storage and supply unit, and management control unit. It is a high-performance battery that separates the positive and negative electrolytes and circulates them separately. It has the characteristics of high capacity, wide application field (environment), and long cycle life. It is a new energy product.

[0003] The data of open circuit voltage (OCV) corresponding to the state of charge (SOC) under different temperature conditions in all-vanadium liquid flow batteries are tested, and the multi-dimensional relationship curve between SOC and OCV is fitted, and SOC is estimated by measuring OCV.

[0004] In the existing SOC test device, it is necessary to lock the various components in the device with bolts so that the rubber film is tightly attached to the flow channel plate. During operation, the rubber film will be squeezed and deformed by being soaked in the electrolyte, resulting in blockage of the electrolyte flow channel, affecting the electrochemical reaction, and causing inaccurate testing. Summary of the invention

[0005] The utility model aims to solve the problem that the electrolyte flow channel in the flow channel plate is blocked by the extrusion of the rubber film during the working process of the SOC test device, thereby affecting the test accuracy, thereby providing a liquid flow battery SOC test device.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: it includes a diaphragm, and flow channel plates symmetrically arranged on both sides of the diaphragm, adhesive films are respectively arranged on both sides of the flow channel plates, an electrode cavity penetrating the flow channel plates is arranged in the middle of the flow channel plates, and a liquid inlet cavity and a liquid outlet cavity are arranged on the side of the flow channel plate away from the diaphragm, and the liquid inlet cavity and the liquid outlet cavity are respectively connected with the electrode cavity; it also includes a liquid inlet cavity cover plate and a liquid outlet cavity cover plate respectively matched with the liquid inlet cavity and the liquid outlet cavity, and a liquid inlet and a liquid outlet are respectively arranged on the liquid inlet cavity cover plate and the liquid outlet cavity cover plate.

[0007] Furthermore, support platforms are provided in the liquid inlet cavity and the liquid outlet cavity, and the support platforms are abutted against the corresponding liquid inlet cavity cover plates and liquid outlet cavity cover plates. The support platforms abut against the relative liquid inlet cavity cover plates and liquid outlet cavity cover plates, which can avoid the problem of blockage of the cover plates in the relative chambers due to extrusion force.

[0008] Furthermore, the support platform includes a diversion area and a flow channel area, and the diversion area is respectively arranged opposite to the liquid inlet and the liquid outlet. The setting of the diversion area can divert the electrolyte delivered to the chamber, so that it is evenly delivered to the electrode cavity through the flow channel area, thereby improving the test accuracy.

[0009] Furthermore, the diversion area includes multiple diversion columns, and the flow channel area includes flow channel platforms arranged in sequence. The diversion area is diverted by multiple diversion columns. While playing the role of diversion, it can also support the corresponding cover plate. Similarly, the flow channel platform design can make the electrolyte flow evenly to the electrode cavity, and can also play a supporting role to prevent the cover plate from squeezing and blocking the flow channel.

[0010] Furthermore, the liquid inlet chamber cover plate and the liquid outlet chamber cover plate are respectively provided with abutment platforms abutting against the flow channel platform, and a liquid flow channel is formed between the abutment platforms and the flow channel platform. While the abutment platforms form the flow channel with the flow channel platform, they can improve the strength of the cover plate and play the role of reinforcing ribs, further preventing the cover plate from blocking the flow channel due to extrusion.

[0011] Furthermore, the height of the diverter column is greater than the height of the flow channel stage. When the electrolyte enters the diverter area, it first fills the diverter area, and then the electrolyte enters the flow channel area under the action of pressure, so that the electrolyte can flow into the electrode cavity more evenly.

[0012] Furthermore, it also includes a flow channel tube, which is arranged between the abutment platform and the flow channel platform. By adding the flow channel tube, the overall strength is further improved to avoid blockage of the flow channel due to extrusion.

[0013] Furthermore, the flow channel tube is a glass tube or a ceramic tube and has a relatively high hardness.

[0014] Furthermore, the width of the diversion area gradually widens toward the flow channel area, and the liquid inlet and the liquid outlet are respectively arranged at the relatively narrow structure of the diversion area. When the electrolyte enters the diversion area, the electrolyte can be better diverted when the area is narrow and the pressure is high.

[0015] Beneficial effects: The structure of the utility model can avoid the problem of test accuracy caused by the blockage of the flow channel by related structural parts due to extrusion and electrolyte immersion, and the flow channel plate has high strength and long service life. At the same time, it can evenly divert the electrolyte and improve the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is the front view of the utility model;

[0018] Figure 3 This is an enlarged view of part A of the utility model;

[0019] Figure 4 This is a schematic diagram of the flow channel plate structure of the utility model.

[0020] In the figure: 1-diaphragm, 2-flow channel plate, 3-film, 4-electrode cavity, 5-liquid inlet cavity, 6-liquid outlet cavity, 7-liquid inlet cavity cover plate, 701-liquid inlet, 8-liquid outlet cavity cover plate, 801-liquid outlet, 9-support platform, 901-diverter area, 9011-diverter column, 902-flow channel area, 9021-flow channel platform, 10-abutment platform, 11-flow channel tube, 100-fixed plate, 200-collecting plate, 300-side plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] Combination Figures 1 to 4 A liquid flow battery SOC test device shown in the figure comprises a diaphragm 1 arranged in the device, and flow channel plates 2 symmetrically arranged on both sides of the diaphragm 1, adhesive films 3 are respectively arranged on both sides of the flow channel plate 2, an electrode cavity 4 penetrating the flow channel plate 2 is arranged in the middle of the flow channel plate 2, and a liquid inlet cavity 5 and a liquid outlet cavity 6 are arranged on the side of the flow channel plate 2 away from the diaphragm 1, and the liquid inlet cavity 5 and the liquid outlet cavity 6 are respectively connected to the electrode cavity 4;

[0024] It also includes a liquid inlet cavity cover plate 7 and a liquid outlet cavity cover plate 8 respectively matched with the liquid inlet cavity 5 and the liquid outlet cavity 6. The liquid inlet 701 and the liquid outlet 801 are respectively arranged on the liquid inlet cavity cover plate 7 and the liquid outlet cavity cover plate 8.

[0025] It should be noted that the liquid inlet chamber 5 and the liquid outlet chamber 6 are arranged on the same surface of the flow channel plate 2, and are symmetrically arranged relative to the electrode chamber 4, and the electrode chamber 4 is connected to the flow channel plate 2, and the liquid inlet chamber 5 and the liquid outlet chamber 6 are of non-through design, and an electrolyte flow channel is formed by the corresponding liquid inlet chamber cover plate 7 and liquid outlet chamber cover plate 8. The electrolyte enters the liquid inlet chamber 5 from the liquid inlet port 701 through the input pipe, flows into the electrode chamber 4, and then flows into the liquid outlet chamber 6 from the electrode chamber 4, and is transmitted to the external output pipe through the liquid outlet port 801.

[0026] It should be noted that the test device also includes other structural parts, such as a fixed plate 100, a collecting plate 200, a side plate 300, and liquid inlet and outlet pipes, which are connected and fixed by bolts or other connection methods to form the main structure of the test device. Of course, there may also be other structural forms. The main purpose of the utility model is to provide a new test device through the structural design of the flow channel plate 2 to solve the problem of flow channel blockage.

[0027] Among them, because the test structure tightly connects various structural parts together through bolts, the film 3 is tightly attached to both sides of the flow channel plate 2, and a corresponding cover plate structure is set on one side of the liquid inlet chamber 5 and the liquid outlet chamber 6. The risk of the film 3 blocking the flow channel due to squeezing and electrolyte immersion can be avoided, thereby improving the test accuracy of the overall device.

[0028] In this exemplary embodiment, support platforms 9 are provided in the liquid inlet cavity 5 and the liquid outlet cavity 6, and the support platforms 9 are abutted against the corresponding liquid inlet cavity cover plates 7 and liquid outlet cavity cover plates 8. The support platforms 9 abut against the relative liquid inlet cavity cover plates 7 and liquid outlet cavity cover plates 8, which can avoid the problem of blockage of the cover plates in the relative chambers due to extrusion force and improve the supporting strength.

[0029] In this exemplary embodiment, the support platform 9 includes a diversion area 901 and a flow channel area 902. The diversion area 901 is respectively arranged opposite to the liquid inlet 5 and the liquid outlet 6. The setting of the diversion area 901 can divert the electrolyte delivered into the chamber, so that it is evenly delivered to the electrode cavity 4 through the flow channel area 902, thereby improving the test accuracy.

[0030] In this exemplary embodiment, the diversion area 901 includes a plurality of diversion columns 9011, and the flow channel area 902 includes flow channel platforms 9021 arranged in sequence. The diversion area 901 is diverted by the plurality of diversion columns 9011, and while playing the role of diversion, it can also play a supporting role for the corresponding cover plate. Similarly, the design of the flow channel platform 9021 can enable the electrolyte to flow evenly to the electrode cavity 4, and can also play a supporting role to prevent the cover plate from squeezing and blocking the flow channel.

[0031] In this exemplary embodiment, an abutment platform 10 abutting against the flow channel platform 9021 is respectively provided on the liquid inlet chamber cover plate 7 and the liquid outlet chamber cover plate 8, and a liquid flow channel is formed between the abutment platform 10 and the flow channel platform 9021. While forming a flow channel with the flow channel platform 9021, the abutment platform 10 can improve the strength of the cover plate and play the role of a reinforcing rib, thereby further preventing the cover plate from blocking the flow channel due to extrusion.

[0032] In this exemplary embodiment, the height of the diverter column 9011 is greater than the height of the flow channel platform 9021. When the electrolyte enters the diverter area 901, it first fills the diverter area 901, and then the electrolyte enters the flow channel area 902 under the action of pressure, so that the electrolyte can flow into the electrode cavity 4 more evenly.

[0033] In this exemplary embodiment, a flow channel tube 11 is also included. The flow channel tube 11 is arranged between the abutment platform 10 and the flow channel platform 9021. By adding the flow channel tube 11, the overall strength is further improved to avoid blockage of the flow channel due to extrusion.

[0034] It should be noted that the flow channel tube 11 can be a glass tube or a ceramic tube, or a tube made of other materials. Its main purpose is to have high hardness while clearing the flow channel to prevent the cover plate from squeezing and blocking the flow channel.

[0035] In this exemplary embodiment, the width of the diversion area 901 gradually widens toward the flow channel area 902, and the liquid inlet 701 and the liquid outlet 702 are respectively arranged at the relatively narrow structure of the diversion area 901. When the electrolyte enters the diversion area 901, the electrolyte can be better diverted when the area is narrow and the pressure is high.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flow battery SOC test device, characterized in that: It comprises a diaphragm (1), and flow channel plates (2) symmetrically arranged on both sides of the diaphragm (1), adhesive films (3) are respectively arranged on both sides of the flow channel plate (2), an electrode cavity (4) penetrating the flow channel plate (2) is arranged in the middle of the flow channel plate (2), and a liquid inlet cavity (5) and a liquid outlet cavity (6) are arranged on the side of the flow channel plate (2) away from the diaphragm (1), and the liquid inlet cavity (5) and the liquid outlet cavity (6) are respectively connected to the electrode cavity (4); It also comprises a liquid inlet cavity cover plate (7) and a liquid outlet cavity cover plate (8) respectively matched with the liquid inlet cavity (5) and the liquid outlet cavity (6), wherein the liquid inlet cavity cover plate (7) and the liquid outlet cavity cover plate (8) are respectively provided with a liquid inlet port (701) and a liquid outlet port (801).

2. A flow battery SOC test device according to claim 1, characterized in that: A support platform (9) is provided in each of the liquid inlet cavity (5) and the liquid outlet cavity (6), and each of the support platforms (9) is in contact with the corresponding liquid inlet cavity cover plate (7) and liquid outlet cavity cover plate (8).

3. A flow battery SOC testing device according to claim 2, characterized in that: The support platform (9) comprises a flow diversion area (901) and a flow channel area (902), and the flow diversion area (901) is respectively arranged opposite to the liquid inlet (701) and the liquid outlet (801).

4. A flow battery SOC test device according to claim 3, characterized in that The diversion area (901) includes a plurality of diversion columns (9011), and the flow channel area (902) includes flow channel platforms (9021) arranged in sequence.

5. A flow battery SOC test device according to claim 4, characterized in that The liquid inlet chamber cover plate (7) and the liquid outlet chamber cover plate (8) are respectively provided with abutment platforms (10) that abut against the flow channel platform (9021), and a liquid flow channel is formed between the abutment platforms (10) and the flow channel platform (9021).

6. A flow battery SOC testing device according to claim 5, characterized in that : The height of the diverter column (9011) is greater than the height of the flow channel platform (9021).

7. A flow battery SOC testing device according to claim 5, characterized in that : Also included is a flow channel tube (11), wherein the flow channel tube (11) is arranged between the abutment platform (10) and the flow channel platform (9021).

8. A flow battery SOC testing device according to claim 7, characterized in that The flow channel tube (11) is a glass tube or a ceramic tube.

9. A flow battery SOC testing device according to claim 3, characterized in that The width of the diversion area (901) gradually widens in the direction toward the flow channel area (902), and the liquid inlet (701) and the liquid outlet (801) are respectively arranged at relatively narrow structures of the diversion area (901).

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