Flow battery electric pile assembly structure

Abstract

The utility model discloses an electric pile assembly structure of a flow battery. The electric pile assembly structure comprises a first end plate, a second end plate, a single battery pack, a fixed column and a medium circulating assembly, a plurality of positioning holes are formed in the first end plate, one side of the first end plate is connected with a temperature control assembly, and one side of the second end plate is connected with a liquid inlet pipe and a liquid outlet pipe; the plurality of single battery packs are positioned between the first end plate and the second end plate; the fixing columns penetrate through the first end plate, the second end plate and the battery packs, and one ends of the fixing columns are connected with fixing nuts; the medium circulation assemblies are connected to the two sides of the single battery pack and are connected with the temperature control assembly. The first end plate and the second end plate serve as fasteners at the two ends, the multiple battery packs are connected between the first end plate and the second end plate, the medium circulation assembly can circulate a liquid medium used for controlling the temperature, then the temperature in the electric pile is controlled through the temperature control assembly, and the weight of the electric pile is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid flow battery stacks, and in particular relates to an assembly structure of a liquid flow battery stack. Background Art

[0002] Flow batteries are an advanced electrochemical energy storage technology. The main difference between them and traditional batteries is that the electrolyte is stored in liquid form in a tank outside the battery and is circulated through the battery by a pump for charging and discharging.

[0003] The flow battery stack is the core component of the flow battery system, responsible for realizing the conversion between electrical energy and chemical energy, that is, storing or releasing energy through electrochemical reactions during the charging and discharging process.

[0004] In practical applications, liquid flow batteries need to consider protection against low and high temperatures. At low temperatures, the viscosity of the electrolyte increases, which increases the burden on the circulation pump and deteriorates the fluidity of the electrolyte, affecting the battery's charge and discharge efficiency and response speed. At high temperatures, the electrolyte will decompose or evaporate, affecting the battery's safety and chemical stability and producing harmful gases. Therefore, there is an urgent need for a liquid flow battery stack assembly structure that can maintain a constant temperature inside the stack. Utility Model Content

[0005] Based on the above technical problems, the utility model provides a flow battery stack assembly structure.

[0006] The specific technical solution is:

[0007] A flow battery stack assembly structure, comprising:

[0008] a first end plate;

[0009] A second end plate, wherein the first end plate is provided with a plurality of positioning holes, a temperature control component is connected to one side of the first end plate, and a liquid inlet pipe and a liquid outlet pipe are connected to one side of the second end plate;

[0010] Single battery packs, wherein the single battery packs are located between the first end plate and the second end plate;

[0011] A fixing column, wherein the fixing columns penetrate the first end plate, the second end plate and the battery packs, and one end of the fixing column is connected to a fixing nut;

[0012] A medium circulation component is connected to both sides of the single battery pack and is connected to the temperature control component.

[0013] In the above technical solution, the temperature control component includes:

[0014] A side shell connected to one side of the first end plate, a side sealing plate provided on one side of the side shell, a pair of side ears connected to both sides of the side sealing plate, and the side ears connected to the side shell;

[0015] Side pipe sections, a pair of side pipe sections are respectively connected to both sides of the side shell;

[0016] a water distribution network connected to a side pipe section located on one side;

[0017] A water tank, the water tank being connected to one side of the first end plate and connected to the water distribution network;

[0018] A circulation pump, one end of which is connected to the water tank, and the other end of which is connected to the side pipe section located on the other side.

[0019] In the above technical solution, the single battery pack includes:

[0020] Collector plate;

[0021] An electrode frame, wherein a pair of the electrode frames are located between a pair of current collecting plates, and the electrode frames are provided with a plurality of conducting holes;

[0022] Electrodes, the electrodes are connected to the electrode frame;

[0023] An ion exchange membrane is located between a pair of electrodes.

[0024] In the above technical solution, the medium circulation component includes:

[0025] a first side connecting plate, wherein the first side connecting plate is provided with a plurality of through holes, and a pair of the first side connecting plates are respectively located on both sides of the plurality of battery packs;

[0026] a conduction tube, the conduction tube running through the conduction hole;

[0027] a first liquid dispensing tube, wherein the plurality of conducting tubes are fixedly connected to the first liquid dispensing tube, and the conducting tubes are communicated with the first liquid dispensing tube;

[0028] a second liquid distributing tube, the other end of the conducting tube being plugged into the second liquid distributing tube, and the second liquid distributing tube being connected to the first side connecting plate;

[0029] A pair of liquid collecting pipes are respectively connected to the first liquid distributing pipe and the second liquid distributing pipe, and a spacer pipe section is connected between the liquid collecting pipe and the side pipe section.

[0030] The above technical solution also includes:

[0031] An electric heating wire, the electric heating wire being wound around one side of the water distribution network;

[0032] A micro compressor is connected to the other side of the water distribution network.

[0033] The above technical solution also includes:

[0034] A pair of second side connecting plates are respectively hinged to the first side connecting plate on one side, and the second side connecting plates are connected to a pair of end plates.

[0035] Compared with the prior art, the present invention provides a flow battery stack assembly structure with the following advantages:

[0036] By using the first end plate and the second end plate as fasteners at both ends, several groups of battery packs are connected between the first end plate and the second end plate. The medium circulation component can circulate the liquid medium used to control the temperature. The temperature inside the battery stack is then controlled by the temperature control component to balance the temperature of the electrolyte and prevent the battery stack from causing problems due to overcooling or overheating. When temperature control is not required, all components can be disassembled to reduce the weight of the battery stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a side view schematic diagram of a flow battery stack assembly structure of the present invention;

[0038] Figure 2 It is a side view schematic diagram of the utility model;

[0039] Figure 3 It is a side view schematic diagram of the utility model;

[0040] Figure 4 It is a cross-sectional schematic diagram of the utility model;

[0041] Figure 5 It is a cross-sectional schematic diagram of the utility model;

[0042] Figure 6 It is a cross-sectional schematic diagram of the utility model;

[0043] Figure 7 This is a schematic diagram of the electrode and ion exchange membrane of the utility model.

[0044] in, Figures 1 to 7 The corresponding relationship between the reference numerals and component names is as follows:

[0045] 1. First end plate; 2. Second end plate; 3. Fixed column; 4. Side shell; 5. Side pipe section; 6. Water distribution network; 7. Water tank; 8. Circulation pump; 9. Collecting plate; 10. Electrode frame; 11. Electrode; 12. Ion exchange membrane; 13. First side connecting plate; 14. Conducting tube; 15. First liquid distribution pipe; 16. Second liquid distribution pipe; 17. Collecting pipe; 18. Electric heating wire; 19. Micro compressor; 20. Second side connecting plate. DETAILED DESCRIPTION

[0046] The following is a combination of specific implementation cases and attached Figure 1-7 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0047] The utility model discloses a liquid flow battery stack assembly structure, including: a first end plate 1, a second end plate 2, a single battery group, a fixing column 3 and a medium circulation component; the first end plate 1 is provided with a plurality of positioning holes, one side of the first end plate 1 is connected to a temperature control component, and one side of the second end plate 2 is connected to a liquid inlet pipe and a liquid outlet pipe; a plurality of single battery groups are located between the first end plate 1 and the second end plate 2; a plurality of fixing columns 3 pass through the first end plate 1, the second end plate 2 and a plurality of battery groups, and one end of the fixing column 3 is connected to a fixing nut; the medium circulation component is connected to both sides of the single battery group, and the medium circulation component is connected to the temperature control component.

[0048] In the embodiment of the present utility model, as Figure 1-7 As shown, the temperature control component includes: a side shell 4, a side pipe section 5, a water distribution network 6, a water tank 7 and a circulation pump 8; the side shell 4 is connected to one side of the first end plate 1, and a side sealing plate is provided on one side of the side shell 4, and a pair of side ears are connected to both sides of the side sealing plate, and the side ears are connected to the side shell 4; a pair of side pipe sections 5 are respectively connected to both sides of the side shell 4; the water distribution network 6 is connected to the side pipe section 5 located on one side; the water tank 7 is connected to one side of the first end plate 1, and the water tank 7 is connected to the water distribution network 6; one end of the circulation pump 8 is connected to the water tank 7, and the other end of the circulation pump 8 is connected to the side pipe section 5 located on the other side.

[0049] In the embodiment of the present utility model, as Figure 1-7 As shown, the single battery pack includes: a current collecting plate 9, an electrode frame 10, an electrode 11 and an ion exchange membrane 12; a pair of electrode frames 10 are located between a pair of current collecting plates 9, and the electrode frames 10 are provided with a plurality of conductive holes; the electrode 11 is connected to the electrode frame 10; and the ion exchange membrane 12 is located between the pair of electrodes 11.

[0050] In the embodiment of the present utility model, as Figure 1-7 As shown, the medium circulation component includes: a first side connecting plate 13, a conducting tube 14, a first liquid distributing tube 15, a second liquid distributing tube 16 and a collecting tube 17; the first side connecting plate 13 is provided with a plurality of through holes, and a pair of first side connecting plates 13 are respectively located on both sides of a plurality of battery packs; the conducting tube 14 passes through the conducting hole; a plurality of conducting tubes 14 are fixedly connected to the first liquid distributing tube 15, and the conducting tube 14 is connected to the first liquid distributing tube 15; the other end of the conducting tube 14 is plugged into the second liquid distributing tube 16, and a sealing ring is provided at the plug-in position of the conducting tube 14 and the second liquid distributing tube 16 to prevent leakage, and the second liquid distributing tube 16 is connected to the first side connecting plate 13; a pair of collecting tubes 17 are respectively connected to the first liquid distributing tube 15 and the second liquid distributing tube 16, and a spacer pipe section is connected between the collecting tube 17 and the side pipe section 5.

[0051] In the embodiment of the present utility model, as Figure 1-7 As shown, it also includes: an electric heating wire 18 and a micro compressor 19; the electric heating wire 18 is wound around one side of the water distribution network 6; and the micro compressor 19 is connected to the other side of the water distribution network 6.

[0052] In the embodiment of the present utility model, as Figure 1-7 As shown, it also includes: a second side connecting plate 20; a pair of second side connecting plates 20 are respectively hinged to the first side connecting plate 13 located on one side, and the second side connecting plates 20 are connected to a pair of end plates.

[0053] Implementation process: When installing the temperature control component and the medium circulation component, first dock the first side connecting plate 13 on both sides with all the battery packs, then insert the conduction tube 14 into the conduction hole, then plug the second liquid distribution tube 16 with one end of the conduction tube 14, and then fix the second liquid distribution tube 16 to the first side connecting plate 13 with bolts, then connect all parts of the medium circulation component to the second end plate 2, and connect the side pipe section 5 to the shunt pipeline to complete the installation. When the battery stack is working, start the circulation pump 8 to circulate the temperature control medium in the conduction tube 14 and each pipe section. At this time, the temperature of the electrode frame 10 is affected by the conduction tube 14, and the temperature begins to change. Temperature sensors can be installed at the liquid inlet pipe and the liquid outlet pipe to measure the temperature of the electrolyte and monitor the temperature control effect in real time. When not in use, all components connected by bolts are disassembled to reduce weight.

[0054] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise expressly defined, the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are intended only to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connect," "install," and "fix" should be understood in a broad sense. For example, "connection" can mean a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0055] In the description of this utility model, the terms "one embodiment," "some embodiments," "specific embodiments," etc., mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the utility model. In this utility model, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A flow battery stack assembly structure, characterized in that: include: a first end plate; A second end plate, wherein the first end plate is provided with a plurality of positioning holes, a temperature control component is connected to one side of the first end plate, and a liquid inlet pipe and a liquid outlet pipe are connected to one side of the second end plate; Single battery packs, wherein the single battery packs are located between the first end plate and the second end plate; A fixing column, wherein the fixing columns penetrate the first end plate, the second end plate and the battery packs, and one end of the fixing column is connected to a fixing nut; A medium circulation component is connected to both sides of the single battery pack and is connected to the temperature control component.

2. A flow battery stack assembly structure according to claim 1, characterized in that: The temperature control component includes: A side shell connected to one side of the first end plate, a side sealing plate provided on one side of the side shell, a pair of side ears connected to both sides of the side sealing plate, and the side ears connected to the side shell; Side pipe sections, a pair of side pipe sections are respectively connected to both sides of the side shell; a water distribution network connected to a side pipe section located on one side; A water tank, the water tank being connected to one side of the first end plate and connected to the water distribution network; A circulation pump, one end of which is connected to the water tank, and the other end of which is connected to the side pipe section located on the other side.

3. The flow battery stack assembly structure according to claim 1, characterized in that: The single battery pack includes: Collector plate; An electrode frame, wherein a pair of the electrode frames are located between a pair of current collecting plates, and the electrode frames are provided with a plurality of conducting holes; Electrodes, the electrodes are connected to the electrode frame; An ion exchange membrane is located between a pair of electrodes.

4. The flow battery stack assembly structure according to claim 1, characterized in that: The medium circulation component includes: a first side connecting plate, wherein the first side connecting plate is provided with a plurality of through holes, and a pair of the first side connecting plates are respectively located on both sides of the plurality of battery packs; a conduction tube, the conduction tube running through the conduction hole; a first liquid dispensing tube, wherein the plurality of conducting tubes are fixedly connected to the first liquid dispensing tube, and the conducting tubes are communicated with the first liquid dispensing tube; a second liquid distributing tube, the other end of the conducting tube being plugged into the second liquid distributing tube, and the second liquid distributing tube being connected to the first side connecting plate; A pair of liquid collecting pipes are respectively connected to the first liquid distributing pipe and the second liquid distributing pipe, and a spacer pipe section is connected between the liquid collecting pipe and the side pipe section.

5. The flow battery stack assembly structure according to claim 2, characterized in that: Also includes: An electric heating wire, the electric heating wire being wound around one side of the water distribution network; A micro compressor is connected to the other side of the water distribution network.

6. The flow battery stack assembly structure according to claim 4, characterized in that: Also includes: A pair of second side connecting plates are respectively hinged to the first side connecting plate on one side, and the second side connecting plates are connected to a pair of end plates.

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