Electrolyte flow guide device for all-vanadium redox flow battery

Abstract

The utility model discloses an electrolyte flow guide device for all -vanadium liquid flow battery relates to liquid flow battery technical field, including bottom plate, the surface fixed setting of bottom plate has battery body and cooling assembly, cooling assembly includes cooling liquid tank, the inside rotatory arrangement of cooling liquid tank has flow guide elbow, the side rotatory arrangement of battery body has cooling liquid input pipe, and one end of flow guide elbow extends to the outside of cooling liquid tank, and the end of flow guide elbow is connected with the liquid inlet end fixed connection of cooling liquid input pipe. The utility model discloses through the connection of flow guide elbow and cooling liquid input pipe, forms closed circulation passageway, and the power drive of cooperation circulation flow guide pump can quickly transport the cooling liquid in cooling liquid tank to battery body, and the heat generated by battery is taken back cooling cavity simultaneously, realizes efficient heat exchange. Utilize drive motor to drive flow guide elbow to rotate in cooling cavity, increase the contact area of flow guide elbow and cooling liquid, and improve heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of flow battery technology, and in particular to an electrolyte guiding device for a vanadium redox flow battery. Background Technology

[0002] Vanadium redox flow batteries are widely used in new energy power generation, smart grids and other fields as a high-efficiency and safe energy storage device. Their performance stability is closely related to the electrolyte's cycle efficiency and temperature control.

[0003] However, existing electrolyte conduction and cooling systems for vanadium redox flow batteries still have many technical limitations in actual operation: During operation, the electrolyte generates a large amount of heat due to electrochemical reactions during circulation. If heat dissipation is not timely, the electrolyte temperature will rise, accelerating the aging of electrode materials and shortening battery life. Existing cooling structures for conduction devices are mostly fixed pipe designs, resulting in limited contact area between the coolant and the pipes, low heat exchange efficiency, and difficulty in meeting the heat dissipation requirements of high-power batteries.

[0004] Secondly, the circulation pipeline design of some electrolyte guiding devices is too long, and the coolant has high resistance along the way during transportation, requiring more energy to drive the circulation. At the same time, the cooled electrolyte is prone to reabsorbing ambient heat during transportation to the battery body due to the long path, which reduces the cooling effect and leads to energy waste.

[0005] To address this, we designed an electrolyte guiding device for vanadium redox flow batteries. Utility Model Content

[0006] This utility model discloses an electrolyte guiding device for a vanadium redox flow battery. To achieve the above objective, this utility model adopts the following technical solution:

[0007] An electrolyte guiding device for a vanadium redox flow battery includes a base plate, on the surface of which a battery body and a cooling assembly are fixedly disposed.

[0008] The cooling assembly includes a coolant tank, a flow guide bend is rotatably arranged inside the coolant tank, a coolant inlet pipe is rotatably arranged on the side of the battery body, one end of the flow guide bend extends to the outside of the coolant tank, and the end of the flow guide bend is fixedly connected to the inlet end of the coolant inlet pipe. A drive motor is fixedly arranged on the upper surface of the coolant tank, and the drive motor is used to drive the flow guide bend to rotate in the coolant tank.

[0009] A circulation guide pump is fixedly installed on the upper surface of the coolant tank. The input end of the circulation guide pump is fixedly connected to a first circulation guide pipe, and the output end of the circulation guide pump is fixedly connected to a second circulation guide pipe.

[0010] In a preferred embodiment, the coolant tank has a cylindrical cooling cavity inside, the size of which matches the size of the guide bend.

[0011] In a preferred embodiment, the end of the second circulation guide pipe away from the circulation guide pump extends into the interior of the cooling cavity and is fixedly connected to the input end of the guide bend. The second circulation guide pipe is rotatably connected to the surface of the coolant tank through a sealed bearing.

[0012] In a preferred embodiment, a three-way switching valve is fixedly embedded on the top side of the battery body. One port of the three-way switching valve is fixedly connected to the input end of the first circulation guide pipe, and the other port of the three-way switching valve is fixedly connected to the output end of the coolant replenishment pipe.

[0013] In a preferred embodiment, a first switching valve is fixedly installed at the inlet end of the second circulation guide pipe, and a second switching valve is fixedly installed on the surface of the coolant input pipe.

[0014] In a preferred embodiment, the end of the coolant inlet pipe away from the battery body extends into the interior of the cooling cavity, and a temperature sensor is fixedly installed on the inner wall of the cooling cavity.

[0015] In a preferred embodiment, the rotating shaft of the drive motor is fixedly provided with a drive synchronous pulley, and the surface of the coolant input pipe is fixedly connected with a driven synchronous pulley. The drive synchronous pulley and the driven synchronous pulley are connected by a transmission belt.

[0016] =In a preferred embodiment, a refrigeration unit is fixedly mounted on the back of the coolant tank, and the refrigeration end of the refrigeration unit extends into the interior of the cooling cavity.

[0017] As can be seen from the above, the electrolyte guiding device for a vanadium redox flow battery provided by this utility model has the following technical effects.

[0018] 1. Improved coolant circulation efficiency and enhanced battery heat dissipation: The cooling assembly, connected to the coolant inlet pipe via a guide bend, forms a closed-loop circulation path. Driven by a circulating pump, it rapidly delivers coolant from the coolant tank to the battery body, while simultaneously carrying the heat generated by the battery back to the cooling cavity, achieving efficient heat exchange. A drive motor rotates the guide bend within the cooling cavity, increasing the contact area between the guide bend and the coolant, thus improving heat exchange efficiency. The cooling end of the chiller extends directly into the cooling cavity, rapidly reducing the coolant temperature and ensuring that the coolant entering the battery body remains at a low temperature, effectively controlling the battery's operating temperature and preventing overheating from affecting performance or lifespan.

[0019] 2. The cooling cavity adopts a cylindrical design, and its size matches that of the guide bend. This provides stable rotation space for the guide bend and reduces ineffective coolant flow, thereby improving energy utilization efficiency. The optimized flow path reduces energy loss. Both the guide bend and the coolant inlet pipe are located inside the coolant tank, shortening the electrolyte's transport path after cooling and reducing frictional resistance and energy loss. The efficient drive of the circulating guide pump further increases the coolant flow rate, ensuring timely and sufficient heat dissipation, indirectly reducing the increased energy consumption caused by overheating of the battery. Attached Figure Description

[0020] Figure 1 This is a front view structural schematic diagram of an electrolyte guiding device for a vanadium redox flow battery proposed in this utility model.

[0021] Figure 2 This is a side view of the electrolyte guiding device for a vanadium redox flow battery proposed in this utility model.

[0022] Figure 3 This is a rear view structural schematic diagram of an electrolyte guiding device for a vanadium redox flow battery proposed in this utility model.

[0023] Figure 4 This is a front cross-sectional view of the cooling component of the electrolyte guiding device for a vanadium redox flow battery proposed in this utility model.

[0024] In the attached diagram: 1. Battery body; 2. Cooling assembly; 3. Coolant inlet pipe; 4. Three-way diverter valve; 5. Coolant replenishment pipe;

[0025] 201. Coolant tank; 202. Guide bend; 203. Drive motor; 204. Circulating guide pump; 205. First circulating guide pipe; 206. Second circulating guide pipe; 207. Cooling cavity; 208. First switching valve; 209. Second switching valve; 210. Temperature sensor; 211. Drive synchronous pulley; 212. Driven synchronous pulley; 213. Drive belt; 214. Refrigeration unit. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Reference Figures 1-4An electrolyte guiding device for a vanadium redox flow battery is disclosed. The device is mounted on a base plate and mainly consists of a battery body 1 and a cooling assembly 2. Coolant circulation and battery heat dissipation are achieved through pipe connections and mechanical transmission. The battery body 1, as the core working component of the vanadium redox flow battery, has a coolant inlet pipe 3 rotatably mounted on its side. One end of the coolant inlet pipe 3 communicates with the interior of the battery body 1, and the other end extends into the interior of the cooling assembly 2, used to transport the cooled coolant to the battery body 1 to remove the heat generated during battery operation.

[0028] Cooling assembly 2 is the core structure for achieving coolant circulation and cooling, and includes the following components: Coolant tank 201 is a hollow box structure fixed to the base plate, with a cylindrical cooling cavity 207 inside, which stores coolant for heat dissipation. The size of the cooling cavity 207 matches the guide bend 202, providing stable rotation space for the guide bend 202, reducing ineffective coolant flow, improving energy utilization efficiency, optimizing space utilization, and reducing energy loss.

[0029] It is worth noting that the guide bend 202 is rotatably installed in the cooling cavity 207 and is curved in shape. One end extends to the outside of the coolant tank 201 and is fixedly connected to the inlet end of the coolant input pipe 3 to form a connected guide channel; the other end is located in the cooling cavity 207 and is fixedly connected to the output end of the second circulation guide pipe 206.

[0030] The guide bend 202 can rotate within the cooling cavity 207, increasing the contact area with the coolant, improving heat exchange efficiency, enhancing heat exchange between the coolant and the guide bend 202, and accelerating cooling.

[0031] It should be noted that the drive motor 203 is fixed on the upper surface of the coolant tank 201, and its rotating shaft extends vertically downward, with a drive synchronous pulley 211 fixedly installed at the end; a driven synchronous pulley 212 is fixedly connected to the surface of the coolant inlet pipe 3, and the drive synchronous pulley 211 and the driven synchronous pulley 212 are connected by a transmission belt 213.

[0032] It should be further explained that when the drive motor 203 starts, the synchronous pulley and the transmission belt 213 drive the coolant inlet pipe 3 and the guide bend 202 to rotate synchronously, realizing the automatic rotation of the guide bend 202 without manual operation, thus improving the adjustment efficiency.

[0033] It is worth noting that the circulating guide pump 204 is fixed on the upper surface of the coolant tank 201 and located on one side of the drive motor 203. Its input end is connected to the battery body 1 through the first circulating guide pipe 205, and its output end is connected to the guide bend pipe 202 through the second circulating guide pipe 206, forming a closed circulation path.

[0034] It should be noted that one end of the first circulation guide pipe 205 is fixedly connected to the input end of the circulation guide pump 204, and the other end is connected to the three-way switching valve 4 on the top of the battery body 1, which is used to draw the coolant after absorbing heat in the battery body 1 back to the cooling assembly 2.

[0035] One end of the second circulation guide pipe 206 is fixedly connected to the output end of the circulation guide pump 204, and the other end extends through the surface of the coolant tank 201 into the cooling cavity 207, where it is fixedly connected to the input end of the guide bend 202. The contact point between the second circulation guide pipe 206 and the coolant tank 201 is connected by a sealed bearing, ensuring that the second circulation guide pipe 206 rotates synchronously with the guide bend 202 while preventing coolant leakage. This balances rotational flexibility and sealing, improving the reliability of the device.

[0036] It should be further explained that the refrigeration unit 214 is fixed on the back of the coolant tank 201, and its cooling end extends through the wall of the coolant tank 201 into the interior of the cooling cavity 207. It can directly cool the coolant in the cooling cavity 207, ensuring that the coolant always maintains a low temperature, quickly reducing the coolant temperature, and providing a continuous low-temperature cooling source for the battery body 1.

[0037] It is worth noting that the temperature sensor 210 is fixed on the inner wall of the cooling cavity 207, which can monitor the temperature of the coolant in the cooling cavity 207 in real time and transmit the data to the control system, providing a basis for the start and stop of the refrigerator 214, realizing intelligent temperature monitoring and regulation, and avoiding energy waste.

[0038] The three-way switching valve 4 is fixedly embedded on the top side of the battery body 1 and has three interfaces: one interface is connected to the inside of the battery body 1, one interface is fixedly connected to the input end of the first circulation guide pipe 205, and the third interface is fixedly connected to the output end of the coolant replenishment pipe 5.

[0039] It should be noted that the three-way switching valve 4 can switch the flow path by switching the valve: during normal circulation, it connects the battery body 1 to the first circulation guide pipe 205; when the coolant is insufficient, it switches to connect to the coolant replenishment pipe 5 to replenish the system with new coolant, thus flexibly realizing the circulation and replenishment functions and ensuring a stable coolant volume.

[0040] It should be further explained that the first switching valve 208 is fixedly installed at the inlet end of the second circulation guide pipe 206 to control the opening and closing of the second circulation guide pipe 206. The second switching valve 209 is fixedly installed on the surface of the coolant inlet pipe 3 to control the opening and closing of the coolant inlet pipe 3. The two valves work together to flexibly adjust the coolant flow rate or close the passage during maintenance, improving system controllability, facilitating flow adjustment and equipment maintenance, and enhancing operational safety.

[0041] Working principle: The circulating guide pump 204 starts, drawing the high-temperature coolant absorbed by the battery body 1 into the circulating guide pump 204 through the first circulating guide pipe 205, and then delivering it to the guide bend 202 through the second circulating guide pipe 206. The drive motor 203 starts, driving the guide bend 202 to rotate in the cooling cavity 207 through the drive synchronous pulley 211, the transmission belt 213 and the driven synchronous pulley 212, increasing the contact area with the coolant; at the same time, the refrigerator 214 starts, cooling the coolant in the cooling cavity 207. The high-temperature coolant decreases in temperature after sufficient heat exchange with the low-temperature coolant in the guide bend 202.

[0042] After cooling, the coolant flows into the coolant inlet pipe 3 through the guide bend 202, and is then transported to the battery body 1 through the coolant inlet pipe 3 to remove the heat generated by the battery during operation, completing one cycle. The temperature sensor 210 monitors the coolant temperature in real time. When the temperature is higher than the set value, the control system controls the refrigerator 214 to enhance cooling. When the coolant is insufficient, the three-way switching valve 4 switches to connect with the coolant replenishment pipe 5 to add new coolant. The first switching valve 208 and the second switching valve 209 can adjust the flow rate or close the passage as needed.

[0043] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. An electrolyte guiding device for a vanadium redox flow battery, comprising a base plate, characterized in that, The base plate is fixedly provided with a battery body (1) and a cooling assembly (2); The cooling assembly (2) includes a coolant tank (201), a flow guide bend (202) is rotatably arranged inside the coolant tank (201), a coolant inlet pipe (3) is rotatably arranged on the side of the battery body (1), one end of the flow guide bend (202) extends to the outside of the coolant tank (201), and the end of the flow guide bend (202) is fixedly connected to the liquid inlet end of the coolant inlet pipe (3). A drive motor (203) is fixedly arranged on the upper surface of the coolant tank (201), and the drive motor (203) is used to drive the flow guide bend (202) to rotate in the coolant tank (201). A circulation guide pump (204) is fixedly installed on the upper surface of the coolant tank (201). The input end of the circulation guide pump (204) is fixedly connected to a first circulation guide pipe (205), and the output end of the circulation guide pump (204) is fixedly connected to a second circulation guide pipe (206).

2. The electrolyte guiding device for a vanadium redox flow battery according to claim 1, characterized in that, The coolant tank (201) has a cylindrical cooling cavity (207) inside, the size of which matches the guide bend (202).

3. The electrolyte guiding device for a vanadium redox flow battery according to claim 2, characterized in that, The end of the second circulation guide pipe (206) away from the circulation guide pump (204) extends into the interior of the cooling cavity (207) and is fixedly connected to the input end of the guide bend (202). The second circulation guide pipe (206) is rotatably connected to the surface of the coolant tank (201) through a sealed bearing.

4. The electrolyte guiding device for a vanadium redox flow battery according to claim 3, characterized in that, A three-way switching valve (4) is fixedly embedded on the top side of the battery body (1). One port of the three-way switching valve (4) is fixedly connected to the input end of the first circulation guide pipe (205), and the other port of the three-way switching valve (4) is fixedly connected to the output end of the coolant replenishment pipe (5).

5. The electrolyte guiding device for a vanadium redox flow battery according to claim 4, characterized in that, The inlet end of the second circulation guide pipe (206) is fixedly provided with a first switch valve (208), and the surface of the coolant input pipe (3) is fixedly provided with a second switch valve (209).

6. The electrolyte guiding device for a vanadium redox flow battery according to claim 5, characterized in that, The end of the coolant inlet pipe (3) away from the battery body (1) extends into the interior of the cooling cavity (207), and a temperature sensor (210) is fixedly installed on the inner wall of the cooling cavity (207).

7. The electrolyte guiding device for a vanadium redox flow battery according to claim 6, characterized in that, The drive motor (203) has a drive synchronous pulley (211) fixedly mounted on its rotating shaft, and a driven synchronous pulley (212) is fixedly connected to the surface of the coolant input pipe (3). The drive synchronous pulley (211) and the driven synchronous pulley (212) are connected by a transmission belt (213).

8. The electrolyte guiding device for a vanadium redox flow battery according to claim 7, characterized in that, A refrigeration unit (214) is fixedly installed on the back of the coolant tank (201), and the refrigeration end of the refrigeration unit (214) extends into the interior of the cooling cavity (207).

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