Liquid flow battery electrolyte storage device

Abstract

The invention relates to a liquid flow battery electrolyte storage device, and relates to the technical field of liquid flow battery electrolytes.The liquid flow battery electrolyte storage device comprises a tank shell and a heat exchange pipe, a spiral storage pipe barrel arranged in the vertical direction is arranged in the tank shell, electrolyte is arranged in the storage pipe barrel, the storage pipe barrel is connected with a liquid pump, the heat exchange pipe is spiral, and the heat exchange pipe is connected with the liquid pump. The storage pipe barrel is arranged vertically in a spiral mode and arranged outside the storage pipe barrel in a sleeving mode, heat exchange liquid is arranged in the heat exchange pipe, the heat exchange pipe is connected with a liquid supply circulating device, the flowing direction of the electrolyte is opposite to that of the heat exchange liquid, the storage pipe barrel is vertically arranged in a spiral mode, the electrolyte in the storage pipe barrel can form ordered layering in the storage pipe barrel, and therefore the heat exchange effect is improved. According to the utility model, the generation of a flowing dead zone is avoided, the occurrence of a side reaction, namely a hydrogen evolution reaction, caused by the mixing of two different ions is also reduced, the heat exchange area is increased, countercurrent flow heat exchange is realized, and the heat exchange efficiency of the device is further ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flow battery electrolyte, in particular to a flow battery electrolyte storage device. BACKGROUND

[0002] With the large-scale access of renewable energy and the rapid development of energy storage technology, flow battery is considered as one of the most promising large-scale energy storage technologies due to its independent energy and power adjustment, high safety, long cycle life and other advantages. The energy of flow battery is stored in external electrolyte, and the electrolyte is transported to the stack by circulating pump to realize electrochemical reaction. The electrolyte storage tank is one of the core components in the energy storage system, and the structural design and functional optimization of the electrolyte storage tank have a decisive influence on the performance of the system.

[0003] The existing technology relates to a heat exchanger for a flow battery energy storage system, which includes an electrolyte storage tube, the electrolyte storage tube includes an electrolyte inlet and an electrolyte outlet, a heat exchange tube is arranged outside the storage tube, the heat exchange tube can control the cooling medium inlet valve, the heat preservation medium inlet valve and the medium outlet valve of the medium flowing out.

[0004] The above-mentioned and existing large-capacity storage tank for flow battery electrolyte application has the problems of large volume, large radial temperature gradient, easy formation of local hot spots in the center area of electrolyte, which leads to the intensification of hydrogen evolution side reaction, and the mixing of different ions in the electrolyte storage tube also intensifies the hydrogen evolution reaction. SUMMARY

[0005] The present application provides a flow battery electrolyte storage device, which can solve the problem that the electrolyte flow path in the existing storage tube is uncontrollable and the temperature is difficult to be quickly controlled, leading to the intensification of hydrogen evolution reaction.

[0006] The technical scheme of the present application is as follows: a flow battery electrolyte storage device, comprising: A tank body shell is provided inside the tank body shell, and a storage tube is provided in a spiral shape and along the vertical direction, the storage tube is provided with electrolyte inside and connected with a liquid pump; A heat exchange tube is provided in a spiral shape and is sleeved outside the storage tube, the heat exchange tube is provided with heat exchange liquid inside and connected with a liquid supply circulating device, and the flow directions of the electrolyte and the heat exchange liquid are opposite.

[0007] By adopting the above scheme, by adopting the spiral and vertically arranged storage pipe cylinder, when the internal electrolyte flows in the storage pipe cylinder, the ions after charging leave the stack and enter from the top of the liquid storage tank, after the flow guiding effect of the spiral storage pipe cylinder, the ions to be charged enriched below the storage pipe cylinder are pushed into the stack to form a push flow for charging, and the push flow formed in the storage pipe cylinder can make the ions in the storage pipe cylinder form an orderly stratification, avoid the generation of flow dead zones, and reduce the mixing of two different ions to generate a side reaction, i.e. hydrogen evolution reaction. At the same time, the spiral storage pipe cylinder is also provided with a spiral heat exchange pipe outside, compared with the traditional storage pipe cylinder, the heat exchange area is greatly increased, so that the temperature of the internal electrolyte can be quickly regulated, and at the same time, since the flow direction of the electrolyte is opposite to that of the heat exchange liquid, a counterflow heat exchange is formed, which further ensures the heat exchange efficiency of the device and reduces the probability of hydrogen evolution reaction.

[0008] In an embodiment of the present application, the heat exchange pipe comprises a plurality of heat exchange curved pipes, the plurality of heat exchange curved pipes are arranged along the height direction and connected to each other, and a heat insulation ring is arranged between adjacent heat exchange curved pipes. Each heat exchange curved pipe is connected to a liquid supply circulating device.

[0009] By adopting the above scheme, by segmenting the heat exchange pipe in the vertical direction, since the electrolyte just flowing out of the stack has the highest temperature and the electrolyte about to enter the stack for charging has the lowest temperature, the flow of the cooling liquid in the heat exchange curved pipe at different heights is controlled to control the heat exchange efficiency of the heat exchange curved pipe at different sections, so that the electrolyte in the device is subjected to regional heat exchange treatment, and the overall heat exchange efficiency of the device is further improved.

[0010] In an embodiment of the present application, the storage pipe cylinder is provided with an inlet pipe at the upper end and an outlet pipe at the lower end. One end of the inlet pipe is connected to the battery reactor, and the other end is connected to the storage pipe cylinder through a buffer device. One end of the outlet pipe is connected to the liquid pump, and the other end is connected to the storage pipe cylinder. One end of the heat exchange curved pipe located below is provided with a heat exchange inlet pipe, and the other end is provided with a heat exchange outlet pipe. The heat exchange inlet pipe and the heat exchange outlet pipe are connected to a liquid supply circulating device.

[0011] By adopting the above scheme, by arranging the inlet pipe above the storage pipe and the outlet pipe below the storage pipe, the electrolyte can form a flow path from top to bottom, and each heat exchange curved pipe can form counterflow heat exchange with the electrolyte, so that each heat exchange curved pipe can generate a continuous and uniform temperature difference, and the heat exchange efficiency is further improved.

[0012] In one embodiment of the present application, the storage tube comprises: The anticorrosion layer is a spiral member; The heat-conducting layer is coaxially arranged outside the anticorrosion layer.

[0013] By adopting the above scheme, the storage tube is arranged as a double-layer member, the internal anticorrosion layer can effectively prevent the electrolyte from corroding the storage tube itself, and the high-strength heat-conducting layer is arranged to ensure the structural strength of the storage tube, and further ensure the heat exchange efficiency by reducing the thickness of the heat-conducting layer.

[0014] In one embodiment of the present application, a liquid level observation assembly is further included, which comprises: The first communication elbow penetrates the tank shell at one end and communicates with the upper end of the storage tube; The second communication elbow penetrates the tank shell at one end and communicates with the lower end of the storage tube; The liquid level tube is a transparent member, arranged in the vertical direction, and the two ends of the liquid level tube are connected to the other ends of the first communication elbow and the second communication elbow, respectively, and the surface of the liquid level tube is provided with a scale.

[0015] By adopting the above scheme, the liquid level tube is arranged to observe the liquid level in the storage tube by using the principle of the communicating vessel, to ensure that a part of the space inside is reserved for hydrogen storage, thereby improving the safety of the device.

[0016] In one embodiment of the present application, a detection chamber is further included, which is assembled on the upper end of the tank shell, and the detection chamber communicates with the upper end of the storage tube through an exhaust pipe, and a hydrogen detection member extending into the detection chamber is arranged on the detection chamber to detect the hydrogen concentration in the detection chamber, so as to calculate the volume of hydrogen generated in the storage tube.

[0017] By adopting the above scheme, the detection chamber is arranged to communicate with the upper part of the storage tube, so that the hydrogen generated in the storage tube can enter the detection chamber through the exhaust pipe, and the hydrogen concentration in the detection chamber is monitored in real time to monitor whether the hydrogen evolution reaction in the storage tube is violent and to determine whether the entire device is working normally.

[0018] In one of the embodiments of the present application, the hydrogen detection device comprises a first detection device and a second detection device, and the detection chamber is internally provided with two detection cavities in communication with each other, the volumes of the two detection cavities are equal, and one end of the first detection device and the second detection device respectively extends into the two detection cavities to detect the hydrogen concentration in the two detection cavities respectively.

[0019] By adopting the above scheme, the first detection device and the second detection device are arranged, the detection chamber is divided into two detection cavities with equal volumes, the hydrogen concentrations in the two detection cavities are detected by the first detection device and the second detection device respectively, and then the flow rate of hydrogen is calculated according to the concentration changes of the two detection cavities, so that the total amount of hydrogen generated by the hydrogen evolution reaction in the storage tube can be calculated.

[0020] In one of the embodiments of the present application, the inner wall of the detection chamber is fixedly connected with a partition plate on one side, the partition plate is placed along the horizontal direction and extends to the other side, and a communication gap is arranged between the partition plate and the other side of the inner wall of the detection chamber to form two detection cavities.

[0021] By adopting the above scheme, the partition plate is arranged in the detection chamber, so that the detection chamber is divided into two detection cavities in communication with each other, and the volumes of the two detection cavities are equal by designing the position and area of the partition plate, so that the flow rate and the volume of hydrogen evolution can be calculated subsequently.

[0022] In one of the embodiments of the present application, the buffer device comprises: a buffer pipe, one end of the buffer pipe is in communication with the liquid inlet pipe, the other end of the buffer pipe is in communication with the storage tube, and the diameter of the buffer pipe is greater than the diameter of the liquid inlet pipe; a buffer plate, the buffer plate is coaxially fixedly connected to the inner wall of the buffer pipe, and a plurality of release holes are arranged in the buffer plate.

[0023] By adopting the above scheme, the buffer tank is arranged at the liquid inlet pipe, and the diameter of the buffer pipe is designed to be greater than the diameter of the liquid inlet pipe. After the electrolyte after charging enters the buffer pipe, the flow rate is reduced, and the kinetic energy is further consumed when falling on the buffer plate. Finally, the electrolyte can uniformly flow down from each release hole and enter the storage tube, so that the high-temperature electrolyte flowing out of the stack can flow into the storage tube more uniformly at a lower speed, the situation that the liquid flow path in the storage tube is chaotic is reduced, and the possibility of hydrogen evolution reaction is reduced.

[0024] In one of the embodiments of the present application, the tank body is internally provided with a tubular interlayer, and the tank body is internally provided with a heat preservation layer in the tubular interlayer.

[0025] By adopting the above scheme, the influence of the external environment temperature on the temperature of the electrolyte in the storage pipe cylinder is reduced by arranging the tubular interlayer inside the tank shell and arranging the heat preservation layer inside the tubular interlayer, and the temperature regulation and control capability of the device on the electrolyte is further improved.

[0026] In summary, the present application has at least one of the following beneficial technical effects: by adopting the spiral liquid storage tank and arranging the heat exchange pipe which is also spiral outside the liquid storage tank, the heat exchange area between the electrolyte and the heat exchange liquid is increased, and the storage pipe cylinder arranged in a spiral shape and along the vertical direction can form electrolyte with uniform concentration gradient, so that the upper part of the storage pipe cylinder is enriched with fully charged ions, and the lower end is enriched with ions to be charged, reducing the concentration of ions to be charged at the lower end of the storage pipe cylinder due to the disorder of the electrolyte, thereby forcing the potential at the lower end to rise, so that the hydrogen evolution reaction is intensified.

[0027] By arranging the heat exchange pipe into a plurality of heat exchange curved pipes segmented along the vertical direction, and separately arranging the heat exchange inlet pipe and the heat exchange outlet pipe on each heat exchange curved pipe, and arranging the heat exchange inlet pipe below and the heat exchange outlet pipe above on each heat exchange curved pipe, a heat exchange liquid flow opposite to the flow direction of the electrolyte can be formed in each heat exchange curved pipe, so that the device can not only accurately regulate the temperature of the electrolyte inside the storage pipe cylinder at different heights, but also form countercurrent heat exchange with the electrolyte, so that a uniform and continuous temperature difference is formed between the heat exchange pipe and the storage pipe cylinder, which helps to further improve the heat exchange efficiency.

[0028] By arranging two detection cavities with equal volume and communicating with each other, hydrogen gas is discharged into the detection cavities after being produced, and the concentration between the two detection cavities is detected synchronously to calculate the rate of hydrogen evolution reaction, and the total amount of hydrogen gas produced by the device can be calculated, so that the device can analyze the intensity of the hydrogen evolution reaction of the electrolyte inside in real time and systematically. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a plan view of a liquid flow battery electrolyte storage device provided in an embodiment of the present application; Figure 2 is a perspective view of a liquid flow battery electrolyte storage device provided in an embodiment of the present application; Figure 3 is a plan view of a buffer pipe of a liquid flow battery electrolyte storage device provided in an embodiment of the present application; Figure 4 is a perspective view of a tank shell of a liquid flow battery electrolyte storage device provided in an embodiment of the present application; Figure 5is a planar sectional view of a heat exchange curved pipe of a liquid flow battery electrolyte storage device provided in the embodiment of the present application; Figure 6 is a planar sectional view of a detection chamber of a liquid flow battery electrolyte storage device provided in the embodiment of the present application.

[0030] Mark explanation: 1, tank shell; 11, tubular interlayer; 12, heat preservation layer; 2, storage pipe cylinder; 201, corrosion protection layer; 202, heat conduction layer; 21, liquid inlet pipe; 22, liquid outlet pipe; 23, buffer device; 231, buffer pipe; 232, buffer plate; 233, release hole; 3, heat exchange pipe; 31, heat exchange curved pipe; 311, heat exchange liquid inlet pipe; 312, heat exchange liquid outlet pipe; 32, heat insulation ring; 4, liquid level observation assembly; 41, first communication elbow; 42, second communication elbow; 43, liquid level pipe; 5, detection chamber; 51, exhaust pipe; 52, hydrogen detection piece; 521, first detection piece; 522, second detection piece; 53, detection cavity; 54, partition; 55, communication gap. DETAILED DESCRIPTION

[0031] The following will be described in detail in combination with the accompanying drawings Figures 1-6 A liquid flow battery electrolyte storage device provided in the present application will be described in further detail.

[0032] The liquid flow battery electrolyte storage device provided in the embodiment of the present application comprises a tank shell 1 and a heat exchange pipe 3.

[0033] Please refer to Figure 1 and Figure 2 The tank shell 1 is internally provided with a storage pipe cylinder 2 which is helical and vertically arranged, the storage pipe cylinder 2 is internally provided with electrolyte and connected with a liquid pump, the heat exchange pipe 3 is helical and sleeved on the outside of the storage pipe cylinder 2, the heat exchange pipe 3 is internally provided with heat exchange liquid and connected with a liquid supply circulating device, the flow direction of the electrolyte is opposite to that of the heat exchange liquid, by adopting the helical and vertically arranged storage pipe cylinder 2, the internal electrolyte can be guided through the helical storage pipe cylinder 2, so that the ions inside the storage pipe cylinder 2 form ordered stratification, avoiding the generation of flow dead zones and reducing the occurrence of side reactions, since the flow direction of the electrolyte is opposite to that of the heat exchange liquid, countercurrent heat exchange is formed, further ensuring the heat exchange efficiency of the device.

[0034] In the embodiment, the liquid supply circulating device can be a water pump, and the heat exchange liquid can be distilled water; The electrolyte inside the storage pipe cylinder 2 can flow from the lower part to the battery for charging, and the charged electrolyte returns to the upper end of the storage pipe cylinder 2 under the pushing of the liquid pump.

[0035] Please refer to Figure 1 andFigure 2 The heat exchange pipe 3 comprises a plurality of heat exchange curved pipes 31 arranged along the height direction and connected with each other, and a heat insulation ring 32 is arranged between adjacent heat exchange curved pipes 31. Each heat exchange curved pipe 31 is connected with a liquid supply circulating device, and the heat exchange efficiency of different heat exchange curved pipes 31 is controlled by controlling the flow of the cooling liquid in the heat exchange curved pipes 31 at different heights, so that the electrolyte in the device is subjected to regional heat exchange treatment.

[0036] In the embodiment, an electric heating rod is arranged in each heat exchange curved pipe 31, which is used to heat and keep warm the electrolyte at night or in winter to prevent the electrolyte from being salting out due to too low temperature.

[0037] Please refer to Figure 1 and Figure 2 The storage pipe cylinder 2 is provided with an inlet pipe 21 at the upper end and an outlet pipe 22 at the lower end. One end of the inlet pipe 21 is connected with the battery reactor, and the other end is connected with the storage pipe cylinder 2 through a buffer device 23. One end of the outlet pipe 22 is connected with the liquid pump, and the other end is connected with the storage pipe cylinder 2. The heat exchange curved pipe 31 is provided with a heat exchange inlet pipe 311 at the lower end and a heat exchange outlet pipe 312 at the other end. The heat exchange inlet pipe 311 and the heat exchange outlet pipe 312 are connected with a liquid supply circulating device. The inlet pipe 21 is arranged above the storage pipe cylinder 2, and the outlet pipe 22 is arranged below the storage pipe cylinder 2, so that the electrolyte forms a flow path from top to bottom, and each heat exchange curved pipe 31 takes in liquid from below, discharges liquid from above and circulates, so that each heat exchange curved pipe 31 can realize countercurrent heat exchange with the electrolyte, and the heat exchange efficiency is improved.

[0038] Please refer to Figure 5 The storage pipe cylinder 2 comprises an anti-corrosion layer 201 and a heat conduction layer 202. The anti-corrosion layer 201 is a spiral member, and the heat conduction layer 202 is coaxially arranged outside the anti-corrosion layer 201. The storage pipe cylinder 2 is arranged as a double-layer member to improve the corrosion resistance of the storage pipe cylinder 2 and ensure the structural strength of the storage pipe cylinder 2. The thickness of the heat conduction layer 202 can be reduced to further improve the heat exchange efficiency.

[0039] In the embodiment, the heat conduction layer 202 can be a stainless steel member, and the anti-corrosion layer 201 can be a polyvinylidene fluoride member.

[0040] Please refer to Figure 1 and Figure 2Further comprising a liquid level observation assembly 4, the liquid level observation assembly 4 comprising a first communication bend pipe 41, a second communication bend pipe 42 and a liquid level pipe 43, one end of the first communication bend pipe 41 penetrating through the tank shell 1 and communicating with the upper end of the storage tube 2, one end of the second communication bend pipe 42 penetrating through the tank shell 1 and communicating with the lower end of the storage tube 2, the liquid level pipe 43 being a transparent material member, the liquid level pipe 43 being arranged in a vertical direction, two ends of the liquid level pipe 43 being connected with the other ends of the first communication bend pipe 41 and the second communication bend pipe 42 respectively, the surface of the liquid level pipe 43 being provided with a scale, by arranging the liquid level pipe 43, the liquid surface height inside the storage tube 2 can be observed through the external transparent liquid level pipe 43 by using the principle of communicating vessels, the inside reserved space is ensured to store hydrogen, and the use safety of the device is improved.

[0041] In the embodiment, the liquid level pipe 43 can be a tempered glass tube.

[0042] Please refer to Figure 1 and Figure 6 Further comprising a detection chamber 5, the detection chamber 5 being arranged at the upper end of the tank shell 1, the detection chamber 5 communicating with the upper end of the storage tube 2 through an exhaust pipe 51, the detection chamber 5 being provided with a hydrogen detection member 52 extending into the inside of the detection chamber 5, for detecting the hydrogen concentration inside the detection chamber 5, so as to calculate the hydrogen volume separated out inside the storage tube 2, by arranging the detection chamber 5 and by monitoring the hydrogen concentration inside the detection chamber 5 in real time, whether the hydrogen separation reaction in the storage tube 2 is violent or not can be monitored, and whether the whole device works normally or not can be judged.

[0043] Please refer to Figure 1 and Figure 6 The hydrogen detection member 52 comprising a first detection member 521 and a second detection member 522, the inside of the detection chamber 5 being provided with two detection cavities 53 communicating with each other, the volumes of the two detection cavities 53 being equal, one end of the first detection member 521 and one end of the second detection member 522 extending into the inside of the two detection cavities 53 respectively, so as to detect the hydrogen concentrations inside the two detection cavities 53 respectively, by detecting the hydrogen concentrations of the two detection cavities 53 respectively by using the first detection member 521 and the second detection member 522, the hydrogen flow rate can be calculated according to the concentration changes of the two detection cavities 53, and then the total amount of hydrogen generated by the hydrogen separation reaction inside the storage tube 2 can be calculated.

[0044] In the embodiment, the first detection member 521 and the second detection member 522 can both be hydrogen concentration sensors or hydrogen concentration detectors.

[0045] Please refer to Figure 6The inner wall of the detection chamber 5 is fixedly connected with a partition plate 54 on one side, the partition plate 54 is placed in the horizontal direction and extends to the other side, and a communication gap 55 is arranged between the partition plate 54 and the other side of the inner wall of the detection chamber 5 to form two detection cavities 53. The volumes of the two detection cavities 53 are designed to be equal, so as to facilitate subsequent measurement of the flow rate and volume of hydrogen.

[0046] In the embodiment, the first detection cavity 53 through which hydrogen gas flows from the exhaust pipe 51 is detection cavity one, and the second detection cavity 53 through which hydrogen gas flows from the detection cavity one and diffuses into through the communication gap 55 is detection cavity two, so as to establish a concentration gradient. Based on the Fick's law principle, the generation rate of hydrogen gas can be derived, wherein the communication gap 55 is narrow enough to ensure that hydrogen gas can be subjected to resistance when flowing through. Since the communication gap 55 formed between the partition plate 54 and the inner wall has a certain cross-sectional area S and diffusion path length L, the diffusion of hydrogen gas from the detection cavity one directly connected with the exhaust pipe 51 to the detection cavity two is resisted, so as to cause a concentration difference between the two cavities.

[0047] The controller is provided and pre-stored with a hydrogen diffusion coefficient D. During the detection process, the first concentration value C1 of the detection cavity one is measured by the first detection piece 521, and the second concentration value C2 of the detection cavity two is measured by the second detection piece 522.

[0048] According to the formula Q = K ·(C1 - C2), the instantaneous diffusion flow rate of hydrogen gas is calculated, wherein K is a structure constant related to the gap geometry and the diffusion coefficient, that is, the formula K = D ·(S / L); By time integration of the calculated instantaneous flow rate, the total volume of hydrogen gas generated inside the tank shell 1 can be calculated. The double-cavity differential detection method can effectively filter out the detection errors caused by gas pressure fluctuations, and is more accurate than single-point detection.

[0049] Please refer to Figure 1 and Figure 3The buffer device 23 comprises a buffer pipe 231 and a buffer plate 232, one end of the buffer pipe 231 is communicated with the liquid inlet pipe 21, the other end is communicated with the storage pipe cylinder 2, the diameter of the buffer pipe 231 is larger than that of the liquid inlet pipe 21, the buffer plate 232 is coaxially fixedly connected to the inner wall of the buffer pipe 231, a plurality of release holes 233 are arranged in the buffer plate 232, the buffer pipe 231 is arranged at the liquid inlet pipe 21, and the diameter of the buffer pipe 231 is designed to be larger than that of the liquid inlet pipe 21, after the electrolyte after charging enters the buffer pipe 231, the flow rate of the electrolyte is reduced due to the increase of the pipe diameter, and the kinetic energy of the electrolyte is further consumed when the electrolyte falls on the buffer plate 232, so that the electrolyte can finally flow down from each release hole 233 uniformly, the flow path of the liquid in the storage pipe cylinder 2 is prevented from being disordered when the electrolyte enters, and the possibility of hydrogen evolution reaction is reduced.

[0050] Please refer to Figure 1 and Figure 4 The tubular interlayer 11 is arranged in the tank shell 1, and the heat preservation layer 12 is arranged in the tubular interlayer 11, so that the influence of the external environment temperature on the temperature of the electrolyte in the storage pipe cylinder 2 is reduced, thereby ensuring the temperature regulation ability of the device on the electrolyte.

[0051] In the embodiment, the heat preservation layer 12 can be glass fiber cotton or rock wool.

[0052] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered in the protection scope of the present application.

Claims

1. A flow battery electrolyte storage device, characterized by, The utility model relates to a kind of hydrogen storage tank, including: Tank shell (1), the tank shell (1) inside is equipped with spiral and vertically arranged storage pipe cylinder (2), the storage pipe cylinder (2) is equipped with electrolyte inside, and is connected with liquid pump; Heat exchange pipe (3), the heat exchange pipe (3) is spiral, and is sleeved in the outside of the storage pipe cylinder (2), the heat exchange pipe (3) is equipped with heat exchange liquid inside, and is connected with liquid supply circulating device, the flow direction of electrolyte and heat exchange liquid is opposite.

2. A flow battery electrolyte storage device according to claim 1, wherein: The heat exchange pipe (3) includes a plurality of heat exchange curved pipes (31), a plurality of the heat exchange curved pipes (31) are arranged along the height direction and are connected with each other, the adjacent heat exchange curved pipes (31) are equipped with heat insulation ring (32), each heat exchange curved pipe (31) is connected with liquid supply circulating device.

3. A flow battery electrolyte storage device according to claim 2, wherein: The upper end of the storage pipe cylinder (2) is equipped with liquid inlet pipe (21), and the lower end is equipped with liquid outlet pipe (22), one end of the liquid inlet pipe (21) is connected with battery reactor, and the other end is communicated with the storage pipe cylinder (2) by buffer device (23), one end of the liquid outlet pipe (22) is connected with the liquid pump, and the other end is communicated with the storage pipe cylinder (2), one end of the heat exchange curved pipe (31) located below is equipped with heat exchange liquid inlet pipe (311), and the other end is equipped with heat exchange liquid outlet pipe (312), the heat exchange liquid inlet pipe (311) and the heat exchange liquid outlet pipe (312) are connected with liquid supply circulating device.

4. A flow battery electrolyte storage device according to claim 3, wherein: The storage pipe cylinder (2) includes: Anti-corrosion layer (201), the anti-corrosion layer (201) is spiral member; Heat conduction layer (202), the heat conduction layer (202) is coaxially arranged in the outside of the anti-corrosion layer (201).

5. The flow battery electrolyte storage device of claim 1, wherein, Also including liquid level observation assembly (4), the liquid level observation assembly (4) includes: First communication elbow (41), one end of the first communication elbow (41) penetrates the tank shell (1), and is communicated with the upper end of the storage pipe cylinder (2); Second communication elbow (42), one end of the second communication elbow (42) penetrates the tank shell (1), and is communicated with the lower end of the storage pipe cylinder (2); Liquid level pipe (43), the liquid level pipe (43) is transparent material member, the liquid level pipe (43) is vertically arranged, the other end of the liquid level pipe (43) is connected with the first communication elbow (41) and second communication elbow (42) respectively, and the surface of the liquid level pipe (43) is provided with scale.

6. The flow battery electrolyte storage device of claim 1, wherein: Also including detection chamber (5), the detection chamber (5) is assembled on the upper end of the tank shell (1), the detection chamber (5) is communicated with the upper end of the storage pipe cylinder (2) by exhaust pipe (51), hydrogen detection piece (52) extending to the inside of the detection chamber (5) is arranged on the detection chamber (5), for detecting the hydrogen concentration in the inside of the detection chamber (5), to measure the hydrogen volume separated out in the inside of the storage pipe cylinder (2).

7. A liquid flow battery electrolyte storage device according to claim 6, wherein: The hydrogen detection piece (52) comprises a first detection piece (521) and a second detection piece (522), two detection cavities (53) in communication with each other are arranged inside the detection chamber (5), the volumes of the two detection cavities (53) are equal, and one end of the first detection piece (521) and the second detection piece (522) respectively extends into the two detection cavities (53) to detect the hydrogen concentration in the two detection cavities (53) respectively.

8. A liquid flow battery electrolyte storage device according to claim 7, wherein: One side of the inner wall of the detection chamber (5) is fixedly connected with a partition plate (54), the partition plate (54) is placed in the horizontal direction and extends to the other side, a communication gap (55) is arranged between the partition plate (54) and the other side of the inner wall of the detection chamber (5) to form the two detection cavities (53).

9. The flow battery electrolyte storage device of claim 3, wherein, The buffer device (23) comprises: a buffer pipe (231), one end of the buffer pipe (231) is in communication with the liquid inlet pipe (21), the other end of the buffer pipe (231) is in communication with the storage pipe barrel (2), and the diameter of the buffer pipe (231) is greater than that of the liquid inlet pipe (21); a buffer plate (232), the buffer plate (232) is coaxially fixedly connected to the inner wall of the buffer pipe (231), and a plurality of release holes (233) are arranged in the buffer plate (232).

10. The flow battery electrolyte storage device of claim 3, wherein: The tank shell (1) is internally provided with a tubular interlayer (11), and the tank shell (1) is internally provided with a heat preservation layer (12) in the tubular interlayer (11).

Images