Electrolyte constant temperature device for all-vanadium redox flow battery

Abstract

The utility model relates to the technical field of chemical energy storage battery manufacturing, in particular to an electrolyte constant temperature device for an all-vanadium redox flow battery, which comprises a tank body and a sealing cover, the sealing cover is mounted at the upper end of the tank body, a constant temperature mechanism is arranged on the inner wall of the tank body, and the constant temperature mechanism comprises a mounting ring and an injection pipe. The upper end of the mounting ring is fixedly connected with the tank body, the outer wall of the injection pipe is fixedly connected with the tank body, and the inner wall of the mounting ring is in threaded connection with the fixing rod. After positive electrode electrolyte and negative electrode electrolyte of the all-vanadium redox flow battery enter the spiral liquid storage pipe from the upper end, stirring liquid on the round rod is electrically and regularly driven to rotate, so that the temperature in the tank body is absorbed by the spiral liquid storage pipe and is uniformly stirred again, and the temperature sensor also detects the temperature in real time; the water pump pumps out water at different temperatures at the two ends of the auxiliary tank body, the temperature in the tank body is adjusted in real time, the constant-temperature effect in the tank body is achieved, and the long-time constant-temperature effect can also be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical energy storage battery manufacturing, in particular to an electrolyte constant temperature device for an all-vanadium liquid flow battery. Background Art

[0002] All-vanadium liquid flow battery is a chemical energy storage battery, which is used in high-power energy storage projects at the kilowatt and megawatt levels worldwide. The active material that realizes the energy storage function in all-vanadium liquid flow battery is vanadium ions of different valence states dissolved in the acidic electrolyte. The mutual conversion between chemical energy and electrical energy is completed through the electrochemical reaction of vanadium ions on the surface of the inert electrode in the battery.

[0003] For example, an electrolyte thermostat for an all-vanadium liquid flow battery with the authorization announcement number "CN 207474583 U" solves the problems of low heat dissipation efficiency and high cost of the existing electrolyte thermostat for an all-vanadium liquid flow battery. The heat exchange tube includes a liquid inlet section, a liquid outlet section and a middle heat exchange section. The parts extending from the two ends of the thermostat tank body are the liquid inlet section and the liquid outlet section, and are strictly sealed at the connection with the thermostat tank body. The heat exchange section is a serpentine structure or a spiral structure, and is arranged in whole or in part inside the thermostat tank body. The thermostat is connected to the electrolyte inlet of the all-vanadium liquid flow battery through the liquid inlet section and the liquid outlet section of the heat exchange tube. Considering that the interior of the thermostat tank body is in a static state, the heat exchange tube absorbs the surrounding temperature, and the temperature close to the inner wall of the thermostat tank body will also flow and dissipate from the outer surface of the thermostat tank body over time, resulting in the thermostat effect becoming worse over time, and a long-term thermostat effect cannot be achieved. Utility Model Content

[0004] The utility model aims to solve the problem that the thermostatic effect of the existing electrolyte thermostat for all-vanadium liquid flow battery becomes worse with time and cannot achieve a long-term thermostatic effect, and proposes an electrolyte thermostat for all-vanadium liquid flow battery.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electrolyte constant temperature device for an all-vanadium liquid flow battery, comprising a tank body and a sealing cover, a sealing cover is installed on the upper end of the tank body, a constant temperature mechanism is provided on the inner wall of the tank body, the constant temperature mechanism comprises a mounting ring and an injection pipe, the upper end of the mounting ring is fixedly connected to the tank body, the outer wall of the injection pipe is fixedly connected to the tank body, the inner wall of the mounting ring is threadedly connected to a fixing rod, the end of the fixing rod is threadedly connected to an auxiliary tank body, a hollow partition is installed on the inner wall of the auxiliary tank body, a water pump is installed on the inner wall of the auxiliary tank body, and the output end of the water pump is connected to the injection pipe.

[0006] Preferably, the outer wall of the sealing cover is provided with a stirring mechanism, and the stirring mechanism comprises a motor, the outer wall of the motor is fixedly connected to the sealing cover, the output end of the motor is fixedly connected to the round rod, and the outer wall of the round rod is fixedly connected to the stirring blade.

[0007] Preferably, the inner wall of the tank body is fixedly connected to the mounting frame, and a spiral storage tube is installed on the inner wall of the mounting frame.

[0008] Preferably, the outer wall of the auxiliary tank body is installed with heat dissipation fins, and the inner wall of the auxiliary tank body is installed with a heating plate.

[0009] Preferably, an extension pipe is installed on the outer wall of the injection pipe, an electric valve is installed on the outer wall of the extension pipe, and the outer wall of the extension pipe is fixedly connected to the hollow partition.

[0010] Preferably, a holding ring is installed on the outer wall of the tank body, and a connecting hole is installed on the outer wall of the holding ring.

[0011] Preferably, a drain valve is installed on the outer wall of the auxiliary tank body. A temperature sensor is installed on the inner wall of the tank body, and the output end of the temperature sensor is electrically connected to the electric valve and the motor.

[0012] The utility model proposes an electrolyte constant temperature device for an all-vanadium liquid flow battery, which has the beneficial effect that after the positive and negative electrolytes of the all-vanadium liquid flow battery enter the interior of the spiral liquid storage tube from the upper end, the electric timing drives the stirring liquid on the round rod to rotate, so that the temperature inside the tank body absorbed by the spiral liquid storage tube is stirred evenly again, the temperature sensor also detects the temperature in real time, and the water pump draws out water of different temperatures at both ends of the auxiliary tank body, and adjusts the temperature inside the tank body in real time, so as to achieve a constant temperature effect inside the tank body, and can also achieve a long-term constant temperature effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure in the middle front view;

[0015] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure from top view;

[0016] Figure 4 for Figure 2 The enlarged structural diagram at A in the middle;

[0017] Figure 5 for Figure 2 The enlarged structural diagram at B in the middle;

[0018] Figure 6 for Figure 2 Schematic diagram of the enlarged structure of the stirring mechanism part.

[0019] In the figure: 1. tank body, 2. sealing cover, 3. constant temperature mechanism, 301. mounting ring, 302. fixing rod, 303. auxiliary tank body, 304. hollow partition, 305. water pump, 306. injection pipe, 4. stirring mechanism, 401. motor, 402. round rod, 403. stirring blade, 5. mounting frame, 6. heat dissipation fin, 7. heating plate, 8. extension pipe, 9. electric valve, 10. holding ring, 11. connecting hole, 12. drain valve, 13. temperature sensor, 14. spiral storage tube. DETAILED DESCRIPTION

[0020] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0021] See also Figure 1-6 The utility model provides a technical solution: an electrolyte constant temperature device for an all-vanadium liquid flow battery, comprising a tank body 1 and a sealing cover 2, the sealing cover 2 is installed on the upper end of the tank body 1, and a constant temperature mechanism 3 is provided on the inner wall of the tank body 1. By controlling the water of different temperatures inside the auxiliary tank body 303 to enter the interior of the tank body 1, the interior of the tank body 1 can achieve a constant temperature effect, the constant temperature mechanism 3 comprises a mounting ring 301 and an injection pipe 306, the upper end of the mounting ring 301 is fixedly connected to the tank body 1, the outer wall of the injection pipe 306 is fixedly connected to the tank body 1, the inner wall of the mounting ring is threadedly connected to a fixing rod 302, the end of the fixing rod 302 is threadedly connected to the auxiliary tank body 303, a hollow partition 304 is installed on the inner wall of the auxiliary tank body 303, a water pump 305 is installed on the inner wall of the auxiliary tank body 303, and the output end of the water pump 305 is connected to the injection pipe 306.

[0022] See also Figure 1 , Figure 2 and Figure 6 The outer wall of the sealing cover 2 is provided with a stirring mechanism 4, and the stirring mechanism 403 on the round rod 402 is driven by the motor 401 to rotate, so as to achieve the effect of stirring the inside of the tank body 1. The stirring mechanism 4 includes a motor 401, and the outer wall of the motor 401 is fixedly connected to the sealing cover 2. The model of the motor 401 can meet the work requirements according to actual needs. The output end of the motor 401 is fixedly connected to the round rod 402, and the outer wall of the round rod 402 is fixedly connected to the stirring blade 403. The surface of the stirring blade 403 has holes. When the stirring blade 403 rotates, part of the liquid will flow out from the hole of the stirring blade 403, which can reduce the large fluctuation of the inside during stirring.

[0023] After the positive and negative electrolytes of the all-vanadium liquid flow battery enter the spiral liquid storage tube 14 from the upper end, the motor 401 regularly drives the stirring liquid 403 on the round rod 402 to rotate, so that the temperature inside the tank body 1 absorbed by the spiral liquid storage tube 14 is stirred evenly again, and the temperature sensor 13 also detects the temperature in real time. The water pump 305 draws out water of different temperatures at both ends of the auxiliary tank body 303, and adjusts the internal temperature of the tank body 1 in real time, so as to achieve a constant temperature effect inside the tank body 1, and can also achieve a long-term constant temperature effect.

[0024] See also Figure 1 and Figure 2 The inner wall of the tank body 1 is fixedly connected to the mounting frame 5, and a spiral storage tube 14 is installed on the inner wall of the mounting frame 5. The spiral storage tube 14 is made of a polymer material that is resistant to acid and oxidation corrosion. The outer wall of the auxiliary tank body 303 is installed with heat dissipation fins 6, and the inner wall of the auxiliary tank body 303 is installed with a heating plate 7.

[0025] See also Figure 1 and Figure 2 The outer wall of the injection pipe 306 is installed with an extension pipe 8, the outer wall of the extension pipe 8 is installed with an electric valve 9, the outer wall of the extension pipe 8 is fixedly connected to the hollow partition 304. The outer wall of the injection pipe 306 is connected with the extension pipe 8, the outer wall of the extension pipe 8 is installed with an electric valve 9, the model of the electric valve 9 is based on real-time needs, and it can meet the work. The outer wall of the extension pipe 8 is fixedly connected to the hollow partition 304, and the outer wall of the auxiliary tank body 303 is installed with a drain valve 12. The inner wall of the tank body 1 is installed with a temperature sensor 13, and the output end of the temperature sensor 13 is electrically connected to the electric valve 9 and the motor 401.

[0026] Working principle:

[0027] Preparation

[0028] First, the connection hole 11 on the holding ring 10 is used to connect with external components to fix the tank body 1 in a placed state to ensure stability during use. The positive and negative electrolytes of the all-vanadium liquid flow battery enter the spiral liquid storage tube 14 from the upper end and are discharged from the lower end of the liquid storage tube 14 as needed.

[0029] Working stage

[0030] By storing liquid with a temperature that satisfies the requirements inside the tank body 1 in contact with the outer surface of the spiral liquid storage tube 14, the spiral liquid storage tube 14 absorbs the temperature and transmits it to the inside of the spiral liquid storage tube 14 to achieve a constant temperature. When the temperature inside the tank body 1 changes, the temperature sensors 13 at multiple angles inside the tank body 1 detect the temperature in real time. When the internal temperature is high, the external power supply of the water pump 305 is turned on, and the water pump 305 starts to work. The water pump 305 draws the cool water inside the heat dissipation fins 6 on the primary side of the auxiliary tank body 303 into the internal tank body 1 until the inside of the tank body 1 is The temperature reaches the constant temperature requirement, and the electric valve 9 is opened regularly, so that a small amount of liquid inside the tank body 1 flows into the auxiliary tank body 303, ensuring that the auxiliary tank body 303 can be replenished with warm water again. Similarly, when the temperature inside the tank body 1 is low, the internal heating plate 7 on the other side of the auxiliary tank body 303 controls the replenishment of liquid with a certain amount of heat, ensuring that the temperature inside the tank body 1 achieves a constant temperature effect on the spiral liquid storage tube 14. At the same time, the motor 401 will also supply power regularly, and the electric 401 will drive the stirring liquid 403 on the round rod 402 to rotate, so that the temperature inside the tank body 1 remains uniform.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrolyte thermostat for an all-vanadium liquid flow battery, comprising a tank body (1) and a sealing cover (2), wherein the sealing cover (2) is installed at the upper end of the tank body (1), characterized in that: The inner wall of the tank body (1) is provided with a constant temperature mechanism (3), the constant temperature mechanism (3) comprising a mounting ring (301) and an injection pipe (306), the upper end of the mounting ring (301) being fixedly connected to the tank body (1), the outer wall of the injection pipe (306) being fixedly connected to the tank body (1), the inner wall of the mounting ring (301) being threadedly connected to a fixing rod (302), the end of the fixing rod (302) being threadedly connected to an auxiliary tank body (303), the inner wall of the auxiliary tank body (303) being provided with a hollow partition plate (304), the inner wall of the auxiliary tank body (303) being provided with a water pump (305), the output end of the water pump (305) being connected to the injection pipe (306).

2. The electrolyte constant temperature device for all-vanadium redox flow battery according to claim 1, characterized in that: The outer wall of the sealing cover (2) is provided with a stirring mechanism (4), the stirring mechanism (4) comprising a motor (401), the outer wall of the motor (401) being fixedly connected to the sealing cover (2), the output end of the motor (401) being fixedly connected to a round rod (402), and the outer wall of the round rod (402) being fixedly connected to a stirring blade (403).

3. The electrolyte constant temperature device for all-vanadium redox flow battery according to claim 1, characterized in that: The inner wall of the tank body (1) is fixedly connected to the mounting frame (5), and a spiral storage tube (14) is mounted on the inner wall of the mounting frame (5).

4. The electrolyte constant temperature device for all-vanadium redox flow battery according to claim 1, characterized in that: The outer wall of the auxiliary tank body (303) is installed with heat dissipation fins (6), and the inner wall of the auxiliary tank body (303) is installed with a heating plate (7).

5. The electrolyte constant temperature device for all-vanadium redox flow battery according to claim 1, characterized in that: An extension pipe (8) is installed on the outer wall of the injection pipe (306), an electric valve (9) is installed on the outer wall of the extension pipe (8), and the outer wall of the extension pipe (8) is fixedly connected to the hollow partition plate (304).

6. The electrolyte constant temperature device for all-vanadium redox flow battery according to claim 1, characterized in that: The outer wall of the tank body (1) is provided with a holding ring (10), and the outer wall of the holding ring (10) is provided with a connecting hole (11).

7. The electrolyte constant temperature device for all-vanadium redox flow battery according to claim 1, characterized in that: A drain valve (12) is installed on the outer wall of the auxiliary tank body (303), and a temperature sensor (13) is installed on the inner wall of the tank body (1), wherein the output end of the temperature sensor (13) is electrically connected to the electric valve (9) and the motor (401).

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