Thermostatic Control System of All-Vanadium Redox Flow Battery

Abstract

The present invention discloses a temperature control system for a vanadium redox flow battery, which relates to the technical field of flow batteries. The system includes a battery storage tank, a battery reaction tank and a liquid return pipe, and further includes a temperature control component, a connecting pipe, a liquid inlet pipe, a heat exchange component and a gas guiding component. The temperature control component is placed between two battery storage tanks and is used for dissipating heat from the battery storage tanks. The connecting pipe, the heat exchange component and the liquid inlet pipe are connected in sequence. The heat exchange component is used for controlling the temperature of the solution flowing through it. The gas guiding component is used for improving the heat exchange efficiency. By setting the temperature control component and the heat exchange component, the temperature of the electrolyte in the battery storage tank and in the pipeline can be controlled separately, so that the temperature of the electrolyte entering the reaction tank is appropriate. Moreover, when heating, the heat exchange component can better improve the utilization rate of hot air and reduce the heat energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of flow batteries, and particularly to a temperature control system for a vanadium redox flow battery. Background Art

[0002] A vanadium redox flow battery (VFB), also known as a vanadium battery, generally consists of two storage tanks filled with vanadium solutions, one serving as the positive electrode and the other as the negative electrode. There is an electric stack between the two electrodes, and through the flow of the liquid, they interact with each other separated by a diaphragm in the electric stack, and the storage and release of electrical energy are achieved through the change in the valence state of vanadium ions. Flow batteries have broad application prospects in the field of large-scale energy storage. However, they have a narrow temperature window, and when the electrolyte temperature exceeds the range, crystallization precipitation occurs, blocking the liquid flow pipeline and causing capacity attenuation. Therefore, when a vanadium redox flow battery is working, it is necessary to control its working temperature.

[0003] For example, a temperature control device for a vanadium redox flow battery with the publication number CN114824374A includes an external controller for controlling the working conditions of the vanadium redox flow battery. The external controller performs rotation-based heat exchange regulation on the vanadium redox flow battery under different working conditions according to the heat generation amount, and the external controller determines the required start-up time and temperature regulation method of the battery system by comparing the differences between the positive and negative electrolyte temperature values and the suitable start-up temperature of the battery system. The external controller will start the corresponding heat exchange equipment according to the heat to perform targeted heat regulation and recycling on the flow battery under different reaction conditions. Through the temperature control device, the vanadium redox flow battery is applicable to various temperatures and various loads, so that the applicable range of the vanadium redox flow battery is wider and the service period is longer.

[0004] The above technical solution has some problems in practical applications. When controlling the temperature of the flow battery, the temperature control method is single, and it is difficult to achieve efficient heat exchange between the electrolyte in the flow battery and the external temperature. Therefore, when the external temperature changes rapidly, it is difficult to ensure the rapid regulation of the electrolyte temperature; and in a low-temperature environment, due to the low electrolyte temperature, the flow battery cannot be used normally, and the needs of the vanadium redox flow battery for use in a low-temperature environment also need to be considered.

[0005] Therefore, it is very necessary to invent a temperature control system for a vanadium redox flow battery to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a temperature control system for a vanadium redox flow battery to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solutions: a temperature control system for a vanadium redox flow battery, including a battery storage tank, a battery reaction tank and a return pipe. There are two battery storage tanks, which are respectively connected to the battery reaction tank through the return pipe. The temperature control system further includes a temperature control component disposed between the two battery storage tanks for dissipating heat from the battery storage tanks; connecting pipes respectively disposed at the upper ends of the battery storage tanks and communicating with the battery storage tanks for pumping the solution in the battery storage tanks; inlet pipes respectively fixedly connected to both sides of the battery reaction tank and communicating with the battery reaction tank; heat exchange components respectively disposed on one side of the corresponding battery storage tank and respectively communicating with the corresponding connecting pipes and inlet pipes for controlling the temperature of the flowing solution; and a gas guiding component disposed at the lower end of the temperature control component and communicating with the temperature control component and the heat exchange component for improving the heat exchange efficiency.

[0008] Preferably, the temperature control component includes heat conducting plates which are symmetrically arranged left and right, and each heat conducting plate is disposed on one side of the corresponding battery storage tank;

[0009] heat conducting tubes, there are two groups of them, and they are respectively disposed in the corresponding battery storage tanks. Each group of heat conducting tubes respectively penetrates through the corresponding battery storage tank and is fixedly connected to the corresponding heat conducting plate;

[0010] heat exchange plates, there are multiple of them, and they are fixedly connected between the two heat conducting plates;

[0011] fixing plates which are fixedly connected between the two heat conducting plates. The fixing plates and the heat conducting plates form a through barrel-shaped structure, and each fixing plate is provided with a plurality of heat dissipation through holes in the middle.

[0012] Preferably, the temperature control component further includes circulating fans, there are multiple of them, and they are fixedly connected between the two battery storage tanks. The circulating fans are disposed above the heat exchange plates;

[0013] heating wires which are arranged between the circulating fans and the heat exchange plates for raising the temperature in the battery storage tanks;

[0014] movable baffles which are slidably connected to the fixing plates and are provided with a plurality of air guiding grooves in the middle. The air guiding grooves correspond to the heat dissipation through holes one by one;

[0015] switching components which are arranged at the lower ends of the movable baffles.

[0016] Preferably, each heat exchange component includes heat exchange tubes which communicate with the corresponding connecting pipes and inlet pipes;

[0017] fixed heat sinks, there are multiple of them, and they are evenly distributed on the outer side of the heat exchange tubes. Each fixed heat sink is fixedly connected to the corresponding heat exchange tube;

[0018] A flip spring piece, which is fixedly sleeved on the outside of the fixed heat sink and has toughness;

[0019] A flip heat sink, which is fixedly sleeved on the outside of the flip spring piece;

[0020] A plugging component, which is arranged on one side of the heat exchange tube and is sleeved on the outside of each flip heat sink.

[0021] Preferably, the plugging component includes a wind guide cover, which is fixedly connected to one side of the corresponding battery storage tank, and a plurality of exhaust holes are opened in the middle thereof;

[0022] A sealing plate, which is arranged to slide up and down inside the wind guide cover, and a plurality of exhaust holes are opened in the middle thereof;

[0023] A clamping plate, which is fixedly connected to the inside of the sealing plate, and the end thereof is in a C-shaped notch, and each flip heat sink is placed in the corresponding C-shaped notch;

[0024] A pneumatic baffle, which is arranged at the position corresponding to the air guide component and is fixedly connected to the sealing plate;

[0025] A reset spring piece, which is fixedly connected to the upper end of the sealing plate, and the other end of the reset spring piece is fixedly connected to the inner wall of the wind guide cover.

[0026] Preferably, the air guide component includes an exhaust hood, which is fixedly arranged at the lower end of the temperature control component;

[0027] An air guide pipe, the middle of which is communicated with the exhaust hood, and the left and right sides thereof are respectively communicated with the air guide covers on the corresponding sides.

[0028] Preferably, the heat exchange plate is arranged in an inclined structure, the inclined directions of a plurality of the heat exchange plates in the horizontal direction are the same, the inclined directions of a plurality of the heat exchange plates in the vertical direction are staggered, and two adjacent heat exchange plates in the vertical direction are arranged in an overlapping manner.

[0029] Preferably, the switching component includes a transmission rod, which is arranged at the lower end of the movable baffle and is rotatably connected to the fixed plate;

[0030] A cam, which is fixedly sleeved on the outside of the transmission rod and corresponds to the movable baffle;

[0031] A steering gear, which is fixedly connected to one side of the fixed plate, and the output shaft thereof is fixedly connected to the transmission rod.

[0032] Preferably, a plurality of grooves are opened in the middle of the heat exchange plate for improving the temperature control effect.

[0033] Preferably, a temperature sensor is fixedly connected to the middle of the heat conduction plate, and the probe of the temperature sensor is arranged inside the battery storage tank.

[0034] Technical effects and advantages of the present invention:

[0035] 1. By arranging a temperature control component between two battery storage tanks, during use, the heat conduction plate can achieve heat exchange of the electrolyte in the battery storage tank through the heat conduction tubes on its outer side, achieve heat exchange with the outside through the heat exchange plates on its inner side, and achieve accelerated heat dissipation of the heat exchange plates through the circulation fan, so as to control the temperature of the electrolyte. By setting multiple heat exchange plates as inclined structures, the air reciprocates when passing through the multiple heat exchange plates due to the influence of the inclined structures of the heat exchange plates, thereby effectively improving the heat exchange efficiency between the heat exchange plates and the air, so as to achieve the purpose of improving the heat exchange efficiency of the electrolyte.

[0036] 2. By arranging a heat exchange component and a plugging component, the movement of the plugging component is controlled by the air flow rate entering the heat exchange component, and the flipping reeds outside the heat exchange tubes change their states. When dissipating heat, the flipping heat dissipation fins are placed above the fixed heat dissipation fins, increasing the speed of the air flow through the heat exchange component and improving the heat dissipation effect. When heating, the flipping heat dissipation fins are placed below the fixed heat dissipation fins, and at the same time the plugging component is closed, making the air flow stay in the heat exchange component for a longer time, making better use of the hot air and improving the heating effect.

[0037] 3. By arranging a heat exchange component between the battery storage tank and the battery reaction box, the heat exchange component can realize the flow guidance of the electrolyte. By arranging fixed heat dissipation fins, flipping reeds and flipping heat dissipation fins outside the heat exchange tubes, the hot air or cold air discharged from the temperature control component is guided to the outside of the heat exchange tubes, and heat exchange is realized with the fixed heat dissipation fins, flipping reeds and flipping heat dissipation fins outside the heat exchange tubes, so as to control the temperature of the electrolyte about to enter the battery reaction box, and further ensure the stability of the temperature of the electrolyte inside the battery reaction box, so as to ensure the stable operation of the flow battery.

[0038] 4. By arranging a fixed plate and a movable baffle, the movable baffle is arranged to move up and down. By controlling the up and down movement of the movable baffle, the heat dissipation through holes and the air guiding grooves coincide or intersect, so as to control the direct entry and exit of external air into and out of the temperature control box. When dissipating heat, the hot air discharge inside the temperature control box can be improved, and when heating, the heat waste inside the temperature control box can be avoided, so as to achieve the purpose of improving the temperature control efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0040] Figure 2 It is a schematic diagram of the structure of the battery storage tank and the temperature control component of the present invention.

[0041] Figure 3 This is a schematic diagram of the movable baffle structure in the present invention.

[0042] Figure 4 This is a schematic diagram of the temperature control component structure in the present invention.

[0043] Figure 5 This is a cross-sectional view of the temperature control component in the present invention.

[0044] Figure 6 This is a schematic diagram of the air guide component structure in the present invention.

[0045] Figure 7 This is a schematic diagram of the plugging component structure in the present invention.

[0046] Figure 8 This is a schematic diagram of the closed state of the exhaust hole in the present invention.

[0047] Figure 9 This is a schematic diagram of the state change of the flip fin in the present invention.

[0048] Figure 10 For the present invention Figure 9 A partial enlarged schematic diagram of area A.

[0049] In the figure: 1. Battery storage tank; 2. Battery reaction box; 3. Return liquid pipe; 4. Temperature control component; 5. Connecting pipe; 6. Liquid inlet pipe; 7. Heat exchange component; 8. Air guide component; 40. Heat conducting plate; 41. Heat conducting pipe; 42. Heat exchange plate; 43. Fixed plate; 44. Heat dissipation through hole; 45. Circulating fan; 46. Heating wire; 47. Movable baffle; 48. Air guide groove; 49. Switching component; 50. Temperature sensor; 490. Transmission rod; 491. Cam; 492. Driving motor; 70. Heat exchange pipe; 71. Fixed fin; 72. Flip spring piece; 73. Flip fin; 74. Plugging component; 740. Air guide cover; 741. Exhaust hole; 742. Sealing plate; 743. Exhaust hole; 745. Clamping plate; 746. C-shaped notch; 747. Pneumatic baffle; 749. Return spring piece; 80. Exhaust hood; 81. Air guide pipe. Detailed implementation manners

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] The present invention provides as Figures 1 to 10The temperature control system of the all-vanadium redox flow battery shown includes a battery storage tank 1, a battery reaction tank 2 and a return pipe 3. There are two battery storage tanks 1, which are respectively connected to the battery reaction tank 2 through the return pipe 3, and the battery reaction tank 2 is arranged on one side of the battery storage tank 1.

[0052] Specifically, it further includes a temperature control component 4, which is placed between the two battery storage tanks 1 for dissipating heat from the battery storage tanks 1. A connecting pipe 5, which is respectively placed at the upper end of the battery storage tanks 1 and is connected to the battery storage tanks 1. A water pump is provided in the middle of the connecting pipe 5, and it is connected to a controller and a power supply for pumping the solution in the battery storage tank 1. The end of the connecting pipe 5 penetrates through the corresponding battery storage tank 1 and is placed inside the battery storage tank 1 to facilitate the water pump to pump the solution in the battery storage tank 1. An inlet pipe 6, which is respectively fixedly connected to both sides of the battery reaction tank 2 and is connected to the battery reaction tank 2; a heat exchange component 7, which is respectively placed on one side of the corresponding battery storage tank 1 and is respectively connected to the corresponding connecting pipe 5 and inlet pipe 6 for controlling the temperature of the flowing solution; during use, the solution in the battery storage tank 1 is pumped out by the water pump and enters the battery reaction tank 2 in sequence through the connecting pipe 5, the heat exchange component 7 and the inlet pipe 6. The solutions on the left and right sides enter the battery reaction tank 2 at the same time to generate electric energy, and the solution in the battery reaction tank 2 is reflowed into the corresponding battery storage tank 1 through the return pipe 3. A gas guiding component 8, which is placed at the lower end of the temperature control component 4 and is connected to the temperature control component 4 and the heat exchange component 7 for improving the heat exchange efficiency. The gas generated in the temperature control component 4 is led to the heat exchange component 7 through the gas guiding component 8 to improve the effect of temperature control.

[0053] More specifically, the temperature control component 4 includes a heat conduction plate 40, which is symmetrically arranged left and right. Each heat conduction plate 40 is placed on one side of the corresponding battery storage tank 1 and is closely attached to the side wall of the battery storage tank 1 to facilitate heat dissipation or heating. There are two groups of heat conduction tubes 41, which are respectively placed in the corresponding battery storage tanks 1. Each group of heat conduction tubes 41 penetrates through the corresponding battery storage tank 1 and is fixedly connected to the corresponding heat conduction plate 40. The heat conduction tubes 41 are made of a metal material that does not react with the solution in the battery storage tank 1. There are multiple heat exchange plates 42, which are fixedly connected between the two heat conduction plates 40. The heat exchange plates 42, heat conduction plates 40 and heat conduction tubes 41 are all made of materials with good thermal conductivity, and the material of the heat conduction tubes 41 does not react with the solution. During use, the solution in the battery storage tank 1 transfers the temperature to the heat exchange plate 42 through the heat conduction tubes 41 and heat conduction plates 40, and the heat exchange plate 42 exchanges heat with the outside air, so that the temperature of the solution in the battery storage tank 1 is maintained within an appropriate range. A fixing plate 43 is fixedly connected between the two heat conduction plates 40. The fixing plate 43 and the heat conduction plate 40 form a through barrel-shaped structure. A plurality of heat dissipation through holes 44 are opened in the middle of each fixing plate 43. The heat dissipation through holes 44 enable the outside air to better contact the heat exchange plate 42 and improve the heat exchange efficiency.

[0054] Specifically, the temperature control component 4 further includes a plurality of circulating fans 45, which are fixedly connected between the two battery storage tanks 1 and are electrically connected to a controller and a power supply. The circulating fans 45 are placed above the heat exchange plate 42. During the cooling and heat dissipation process, the circulating fans 45 draw the outside air into the space between the heat conduction plate 40 and the fixing plate 43, so that the air can better contact the heat exchange plate 42 and improve the heat exchange efficiency of the heat exchange plate 42, achieving the purpose of dissipating heat from the solution. A heating wire 46 is arranged between the circulating fan 45 and the heat exchange plate 42 and is electrically connected to a controller and a power supply. After the power is turned on, the heating wire 46 generates heat to increase the temperature in the battery storage tank 1. During the heating process, heat is generated by the heating wire 46, and the heated air is blown downward by the circulating fan 45 to make it contact the heat exchange plate 42. At this time, the heat enters the battery storage tank 1 through the heat exchange plate 42, heat conduction plate 40 and heat conduction tube 41 to warm the solution in the battery storage tank 1 and prevent the solution temperature from being too low from affecting the operation of the flow battery. A movable baffle 47 is slidably connected to the fixing plate 43, and a plurality of air guiding grooves 48 are opened in the middle. The air guiding grooves 48 correspond to the heat dissipation through holes 44 one by one. After the movable baffle 47 slides relative to the fixing plate 43, the air guiding grooves 48 are staggered from the heat dissipation through holes 44. At this time, the outside air cannot enter the space between the two heat conduction plates 40 through the heat dissipation through holes 44, preventing heat loss during the heating of the solution and improving the heating effect on the solution. A switching component 49 is arranged at the lower end of the movable baffle 47.

[0055] More specifically, each of the heat exchange components 7 includes a heat exchange tube 70, which is communicated with the corresponding connecting tube 5 and liquid inlet tube 6, and the solution in the battery storage tank 1 enters the liquid inlet tube 6 through the heat exchange tube. Fixed heat sinks 71, which are provided in plurality and evenly distributed outside the heat exchange tube 70, and each of the fixed heat sinks 71 is fixedly connected to the corresponding heat exchange tube 70. A flipping reed 72, which is fixedly sleeved outside the fixed heat sink 71 and has toughness, and the flipping reed 72 can be flipped into a horn shape with the opening facing upward or downward, and a plurality of flipping reeds 72 flip synchronously in the same direction. A flipping heat sink 73, which is fixedly sleeved outside the flipping reed 72, and the heat dissipation reed follows the flipping of the flipping reed 72. A sealing component 74, which is arranged on one side of the heat exchange tube 70 and sleeved outside each of the flipping heat sinks 73, and the opening direction of the flipping reed 72 is adjusted through the sealing component 74.

[0056] It should be mainly noted that the heat exchange tube 70, the fixed heat sink 71, the flipping reed 72 and the flipping heat sink 73 are all made of materials with good thermal conductivity. A plurality of notches are formed on the outside of the flipping heat sink 73, and the notches of two consecutive flipping heat sinks 73 are staggered, so that the gas can better perform heat exchange when flowing through the flipping heat sink 73. During the heat dissipation process, the flipping reed 72 is in the shape of a horn with the opening facing upward, as Figure 9 shown in (a) in the figure. At this time, the flipping heat sink 73 is placed above the corresponding fixed heat sink 71, and the air entering through the air guiding component 8 flows from bottom to top and quickly flows through the flipping heat sink 73, so that the air takes away the heat of the flipping heat sink 73 and better dissipates the heat of the solution in the heat exchange tube 70; when heating the solution in the heat exchange tube 70, the flipping reed 72 is switched to the state with the opening facing downward, as Figure 9 shown in (b) in the figure. The air can better contact with the flipping heat sink 73. Since its opening faces downward, the air can better stay in the air guiding cover 740, prolonging the contact time between the hot air and the flipping heat sink 73 and further increasing the temperature of the solution in the heat conduction tube 41.

[0057] Specifically, the plugging assembly 74 includes a wind guide cover 740, which is fixedly connected to one side of the corresponding battery storage tank 1, and a plurality of exhaust holes 741 are formed in the middle thereof. The wind guide cover 740 is L-shaped, and the heat exchange tube 70 is placed between the wind guide cover 740 and the battery storage tank 1. A sealing plate 742 is slidably arranged up and down inside the wind guide cover 740, and a plurality of exhaust holes 743 are formed in the middle thereof. A vertical chute is provided at the position corresponding to the sealing plate 742 inside the wind guide cover 740, and the sealing plate 742 is placed in the chute so that the sealing plate 742 can only slide vertically relative to the wind guide cover 740 during use. A clamping plate 745 is fixedly connected to the inside of the sealing plate 742, and the end thereof is in a C-shaped notch 746. The clamping plate 745 corresponds to the flip fins 73 one by one, and each flip fin 73 is placed in the corresponding C-shaped notch 746.

[0058] It should be noted that the number of exhaust holes 741 is more than that of exhaust holes 743, and the uppermost exhaust hole 743 will not be blocked by the sealing plate 742. When the exhaust holes 741 and the exhaust holes 743 correspond, the air inside the wind guide cover 740 is communicated with the outside, and better heat dissipation can be achieved; when the exhaust holes 743 and the exhaust holes 741 do not correspond, the air inside the wind guide cover 740 can only be discharged through the uppermost exhaust hole 741, and the air inside the wind guide cover 740 can better contact the flip fins 73, and the temperature of the solution in the heat conduction tube 41 can be better increased.

[0059] The plugging assembly 74 further includes a pneumatic baffle 747, which is arranged at the position corresponding to the air guiding assembly 8 and is fixedly connected to the sealing plate 742. The air flow of the air guiding assembly 8 is enhanced to push the pneumatic baffle 747 to slide upward. The increase in the air flow of the air guiding assembly 8 causes the pneumatic baffle 747 to slide upward, so that the sealing plate 742 slides relative to the wind guide cover 740, making the exhaust holes 743 not correspond to the exhaust holes 741. At the same time, the clamping plate 745 pushes the flip fins 73, so that the flip spring piece 72 is switched to the state with the opening facing downward. The air entering through the air guiding assembly 8 can better contact the flip fins 73, and the air inside the wind guide cover 740 can only be discharged through the uppermost exhaust hole 741, better increasing the temperature of the solution in the heat conduction tube 41. A reset spring piece 749 is fixedly connected to the upper end of the sealing plate 742, and the other end of the reset spring piece 749 is fixedly connected to the inner wall of the wind guide cover 740. When the air flow of the air guiding assembly 8 decreases, the reset spring piece 749 pushes the sealing plate 742 to reset downward, and at the same time, the pneumatic baffle 747 also slides downward, but the gas in the air guiding assembly 8 can still enter the wind guide cover 740. At this time, the clamping plate 745 switches the flip spring piece 72 to the state with the opening facing upward, and the exhaust holes 741 correspond to the exhaust holes 743, and the air inside the wind guide cover 740 is communicated with the outside, and better heat dissipation can be achieved.

[0060] More specifically, the air guiding assembly 8 includes an exhaust hood 80 fixedly arranged at the lower end of the temperature control assembly 4. The circulating fan 45 generates an air flow that enters the exhaust hood 80 after passing through the heat exchange plate 42. An air guiding pipe 81, the middle of which is communicated with the exhaust hood 80, and the left and right sides of which are respectively communicated with the air guiding hoods 740 penetrating through the corresponding sides. The air flow enters the air guiding hoods 740 through the air guiding pipe 81.

[0061] Specifically, the heat exchange plate 42 is arranged in an inclined structure to facilitate better air circulation. The plurality of heat exchange plates 42 in the horizontal direction have the same inclined direction, and the plurality of heat exchange plates 42 in the vertical direction are arranged with staggered inclined directions, and two adjacent heat exchange plates 42 in the vertical direction are arranged in an overlapping manner, as Figure 5 shown.

[0062] More specifically, the switching assembly 49 includes a transmission rod 490 arranged at the lower end of the movable baffle 47 and rotatably connected to the fixing plate 43. A cam 491 fixedly sleeved on the outer side of the transmission rod 490 and corresponding to the movable baffle 47. A driving motor 492 fixedly connected to one side of the fixing plate 43, and the output shaft of which is fixedly connected to the transmission rod 490. The driving motor 492 is electrically connected to a controller and a power supply. The driving motor 492 can drive the cam 491 to rotate, and the cam 491 can squeeze the movable baffle 47 to move it up and down so as to make the heat dissipation through holes 44 coincide or be misaligned with the air guiding grooves 48.

[0063] Specifically, a plurality of grooves are formed in the middle of the heat exchange plate 42 to increase the contact area between the heat exchange plate 42 and the air. The heat exchange plate 42 can also be arranged in a corrugated shape to improve the temperature control effect.

[0064] More specifically, a temperature sensor 50 is fixedly connected to the middle of the heat conducting plate 40, and the probe of the temperature sensor 50 is arranged inside the battery storage tank 1. The temperature sensor 50 can monitor the temperature of the solution in the battery storage tank 1. The temperature sensor 50 is electrically connected to a controller, and through the controller, the circulating fan 45, the heating wire 46 and the driving motor 492 are respectively controlled so that they can automatically perform temperature regulation according to the temperature of the solution in the battery storage tank 1.

[0065] In this embodiment, the solution in the battery storage tank 1 is pumped out by a water pump and enters the battery reaction tank 2 through the connecting pipe 5, the heat exchange assembly 7 and the liquid inlet pipe 6 in sequence to generate electric energy. At the same time, the solution in the battery reaction tank 2 is reflowed into the corresponding battery storage tank 1 through the liquid return pipe 3. During this process, the temperature of the solution in the battery storage tank 1 will rise and needs to be regulated.

[0066] When the solution temperature is too high and heat dissipation is required, the solution in the battery storage tank 1 transfers the temperature to the heat exchange plate 42 through the heat pipe 41 and the heat conduction plate 40, and the heat exchange plate 42 exchanges heat with the outside air. The air can also enter between the two heat conduction plates 40 through the air guide groove 48 and the heat dissipation through-hole 44. At the same time, the circulation fan 45 can be started to increase the air flow rate between the heat exchange plates 42 and improve the heat exchange efficiency.

[0067] During this process, the airflow generated by the circulating fan 45 enters the exhaust hood 80 and enters the air guide hood 740 through the air duct 81. At this time, the flip reed 72 is in the shape of a trumpet with the opening facing upward. The air flows from bottom to top and quickly flows through the flip heat sink 73, so that the air takes away the heat of the flip heat sink 73 and better dissipates the heat of the solution in the heat exchange tube 70. At the same time, the outside air can also enter the air guide hood 740 through the exhaust hole 741 and the exhaust hole 743, and exchange heat with the flip heat sink 73, further improving the heat exchange efficiency.

[0068] When the solution temperature is too low and needs to be heated, the drive motor 492 drives the cam 491 to rotate so that the heat dissipation hole 44 coincides with the air guide groove 48, and the circulation fan 45 and the heating wire 46 are started. Heat is generated by the heating wire 46, and the heated air is blown downward by the circulation fan 45 so that it contacts the heat exchange plate 42. At this time, the outside air cannot pass through the heat dissipation hole 44 and enter between the two heat conduction plates 40, preventing heat loss when heating the solution. At this time, the heat enters the battery storage tank 1 through the heat exchange plate 42, the heat conduction plate 40 and the heat pipe 41, heating the solution in the battery storage tank 1, so that the liquid battery can operate stably.

[0069] During this process, since the heat dissipation through-hole 44 is blocked, hot air will not be discharged through the heat dissipation through-hole 44. At this time, the air flow rate entering the exhaust hood 80 increases, causing the air pressure of the hot air in the air duct 81 to increase; when the hot air with increased air pressure is discharged through the outlet of the air duct 81, it can push the pneumatic baffle 747 directly above the outlet of the air duct 81 to slide upward; it should be noted that during the heat dissipation process, since a part of the blowing air is discharged through the heat dissipation through-hole 44, the air pressure of the subsequent blowing air that reaches the air duct 81 and is discharged from the outlet of the air duct 81 cannot blow the pneumatic baffle 747 upward. The pneumatic baffle 747 drives the sealing plate 742 to move upward to ensure that the exhaust hole 743 corresponds to the exhaust air hole 741, and heat can be discharged from the exhaust hole 743 and the exhaust air hole 741. Specifically, after the pneumatic baffle 747 slides upward relative to the air guide hood 740, the exhaust hole 743 and the exhaust air hole 741 will not correspond, so as to ensure that the hot air for heating can continue to move upward, increasing the heat exchange time between the hot air and the solution in the heat conduction tube 41 and improving the heating effect on the solution in the heat conduction tube 41; at the same time, the sealing plate 742 drives the buckle plate 745 to move upward, and the buckle plate 745 pushes the flip heat sink 73, causing the flip spring piece 72 to switch to a state with the opening facing downward, that is, from Figure 9 the form shown in (a) in transforms into the form shown in (b). The hot air entering through the air duct 81 is blocked by the flip spring piece 72, reducing the flow rate of the hot air, enabling the air to better stay in the air guide hood 740, and further increasing the contact time between the hot air and the flip heat sink 73, increasing the heat exchange amount between the two, improving the heating effect of the solution in the heat conduction tube 41, preventing the liquid battery from being unusable in a low-temperature state, and better controlling the solution temperature.

[0070] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Temperature control system for all-vanadium redox flow battery, comprising battery storage tanks (1), battery reaction chambers (2) and a liquid return pipe (3), wherein there are two battery storage tanks (1), and each is communicated with the battery reaction chamber (2) through the liquid return pipe (3), characterized in that: It further includes a temperature control component (4) which is placed between the two battery storage tanks (1) for dissipating heat from the battery storage tanks (1); Connecting pipes (5) which are respectively placed at the upper ends of the battery storage tanks (1) and are communicated with the battery storage tanks (1) for extracting the solution in the battery storage tanks (1); Inlet pipes (6) which are respectively fixedly connected to both sides of the battery reaction tank (2) and are communicated with the battery reaction tank (2); Heat exchange components (7) which are respectively placed on one side of the corresponding battery storage tanks (1) and are respectively communicated with the corresponding connecting pipes (5) and inlet pipes (6) for controlling the temperature of the flowing solution; Gas guiding components (8) which are placed at the lower end of the temperature control component (4) and are communicated with the temperature control component (4) and the heat exchange components (7) for improving the heat exchange efficiency; The temperature control component (4) includes heat conducting plates (40) which are symmetrically arranged left and right, and each heat conducting plate (40) is placed on one side of the corresponding battery storage tank (1); Heat conducting pipes (41) of which the number is two groups and are respectively placed in the corresponding battery storage tanks (1), and each group of heat conducting pipes (41) respectively penetrates through the corresponding battery storage tank (1) and is fixedly connected to the corresponding heat conducting plate (40); Heat exchange plates (42) of which the number is multiple and are fixedly connected between the two heat conducting plates (40); Fixing plates (43) which are fixedly connected between the two heat conducting plates (40), the fixing plates (43) and the heat conducting plates (40) form a through barrel-shaped structure, and a plurality of heat dissipation through holes (44) are respectively opened in the middle of each fixing plate (43); Each heat exchange component (7) includes a heat exchange pipe (70) which is communicated with the corresponding connecting pipe (5) and inlet pipe (6); Fixed heat dissipation fins (71) of which the number is multiple and are evenly distributed on the outer side of the heat exchange pipe (70), and each fixed heat dissipation fin (71) is fixedly connected to the corresponding heat exchange pipe (70); Flip spring pieces (72) which are fixedly sleeved on the outer side of the fixed heat dissipation fins (71) and are resilient; Flip heat dissipation fins (73) which are fixedly sleeved on the outer side of the flip spring pieces (72); Sealing components (74) which are arranged on one side of the heat exchange pipe (70) and are sleeved on the outer side of each flip heat dissipation fin (73).

2. The temperature control system of the all-vanadium redox flow battery according to claim 1, characterized in that: The temperature control component (4) further includes circulating fans (45) of which the number is multiple and are fixedly connected between the two battery storage tanks (1), and the circulating fans (45) are placed above the heat exchange plates (42); Heating wires (46) which are arranged between the circulating fans (45) and the heat exchange plates (42) for raising the temperature in the battery storage tanks (1); Movable baffles (47) which are slidably connected to the fixing plates (43) and have a plurality of air guiding grooves (48) opened in the middle, and the air guiding grooves (48) correspond to the heat dissipation through holes (44) one by one; Switching components (49) which are arranged at the lower end of the movable baffles (47).

3. The temperature control system of the all-vanadium redox flow battery according to claim 1, wherein: The plugging component (74) includes an air guide hood (740) fixedly connected to one side of the corresponding battery storage tank (1), and a plurality of exhaust holes (741) are formed in the middle thereof; A sealing plate (742) is slidably arranged up and down inside the air guide hood (740), and a plurality of exhaust holes (743) are formed in the middle thereof; A clamping plate (745) is fixedly connected to the inner side of the sealing plate (742), and the end part thereof is in a C-shaped notch (746), and each of the flipping heat dissipation fins (73) is placed in the corresponding C-shaped notch (746); A pneumatic baffle (747) is arranged at the position corresponding to the air guiding component (8) and is fixedly connected to the sealing plate (742); A reset reed (749) is fixedly connected to the upper end of the sealing plate (742), and the other end of the reset reed (749) is fixedly connected to the inner wall of the air guide hood (740).

4. The temperature control system of the all-vanadium redox flow battery according to claim 2, characterized in that: The air guiding component (8) includes an exhaust hood (80) fixedly arranged at the lower end of the temperature control component (4); An air guide pipe (81) is communicated with the exhaust hood (80) in the middle, and the left and right sides thereof are respectively connected to the air guide hood (740) penetrating through the corresponding side.

5. The temperature control system of the all-vanadium redox flow battery according to claim 1, characterized in that: The heat exchange plate (42) is arranged in an inclined structure, the inclined directions of a plurality of the heat exchange plates (42) in the horizontal direction are the same, the inclined directions of a plurality of the heat exchange plates (42) in the vertical direction are arranged staggeredly, and two adjacent heat exchange plates (42) in the vertical direction are arranged in an overlapping manner.

6. The temperature control system of the all-vanadium redox flow battery according to claim 2, wherein: The switching component (49) includes a transmission rod (490) arranged at the lower end of the movable baffle (47) and rotatably connected to the fixing plate (43); A cam (491) is fixedly sleeved on the outer side of the transmission rod (490) and corresponds to the movable baffle (47); A servo motor (492) is fixedly connected to one side of the fixing plate (43), and the output shaft thereof is fixedly connected to the transmission rod (490).

7. The temperature control system of the all-vanadium redox flow battery according to claim 2, characterized in that: A plurality of grooves are formed in the middle of the heat exchange plate (42) for improving the temperature control effect.

8. The temperature control system of the all-vanadium redox flow battery according to claim 1, wherein: A temperature sensor (50) is fixedly connected to the middle of the heat conducting plate (40), and the probe of the temperature sensor (50) is arranged inside the battery storage tank (1).

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