Sodium ion battery with heat dissipation function
By designing an airbag-driven automatic switching structure between air-cooled and liquid-cooled plates in sodium-ion batteries, the problem that heat dissipation equipment in the prior art cannot adapt to changes in air pressure is solved, and efficient heat dissipation and low-energy operation are achieved in different environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUANENG CLEAN ENERGY RES INST
- Filing Date
- 2026-03-27
- Publication Date
- 2026-07-31
AI Technical Summary
Existing sodium-ion battery heat dissipation technology cannot automatically adjust the heat dissipation method according to changes in external ambient air pressure, resulting in insufficient heat dissipation effect in low-pressure plateau environments. Furthermore, liquid cooling equipment consumes additional electrical energy when running continuously under normal air pressure conditions, increasing the auxiliary energy consumption of the energy storage system.
A sodium-ion battery structure with air-cooled plate and liquid-cooled plate was designed. By setting an airbag and circulation component inside the shell, the automatic switching between air-cooled plate and liquid-cooled plate is driven by changes in external air pressure. Combined with a mechanical transmission structure, the automatic conversion between air cooling and liquid cooling is realized, eliminating the need for electronic sensors and water pumps and reducing energy consumption.
It enables automatic adjustment of heat dissipation methods under different altitudes, improves heat dissipation effect, reduces auxiliary energy consumption of equipment, and ensures stable operation and efficient heat dissipation of sodium-ion batteries.
Smart Images
Figure CN122494936A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of battery thermal management technology, specifically to a sodium-ion battery with heat dissipation function. Background Technology
[0002] The heat generated during the charging and discharging of sodium-ion batteries mainly originates from the entropy change heat of electrochemical reactions, ohmic internal resistance heat, and polarization heat. The slow insertion and extraction kinetics of sodium ions in hard carbon anodes lead to increased polarization resistance in sodium-ion batteries. Currently, mainstream polyanionic cathode materials have relatively low electronic conductivity, exacerbating the accumulation of Joule heat. Sodium-ion battery electrolytes typically employ high-concentration sodium salt formulations, and the viscosity of these formulations affects the internal thermal conductivity of the cell. These physical characteristics make sodium-ion batteries prone to localized hot spots under high-power charging and discharging conditions, resulting in significant challenges in temperature uniformity control. Therefore, heat dissipation technology has become a key factor restricting the commercial application of sodium-ion batteries.
[0003] Current sodium-ion battery cooling technologies primarily employ either air cooling or liquid cooling systems for single-mode heat dissipation. In air-cooled energy storage systems, the cooling capacity of the air-cooled system decreases significantly with increasing current density as the sodium-ion battery operates at high power, leading to heat accumulation during charging and discharging and causing abnormal battery performance. While liquid-cooled systems can meet the heat dissipation requirements of sodium-ion batteries during high-power operation, continuous operation of the liquid-cooled system during normal power charging / discharging or standby states results in excessive heat dissipation, consuming significant amounts of additional energy and increasing the overall auxiliary energy consumption of the energy storage system, thus raising its operation and maintenance costs. Furthermore, existing single-mode cooling devices cannot automatically adjust their cooling methods according to changes in ambient air pressure when used across different altitudes and air pressures. This leads to increased energy loss during normal operation in high-pressure plains environments and insufficient heat dissipation during high-power operation in low-pressure plateau environments. Therefore, this invention proposes a sodium-ion battery with integrated heat dissipation functionality to address the shortcomings of existing technologies. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides a sodium-ion battery with heat dissipation function. This solves the problems that existing single heat dissipation devices cannot automatically adjust their heat dissipation methods according to changes in ambient air pressure, resulting in insufficient heat dissipation when operating at high power in low-pressure, high-altitude environments, and the increased auxiliary energy consumption of liquid cooling devices during continuous operation in normal air pressure environments.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a sodium-ion battery with heat dissipation function, comprising a casing, wherein multiple battery packs are disposed inside the casing, and air-cooling plates and liquid-cooling plates are disposed on both sides of the battery packs, the multiple air-cooling plates and liquid-cooling plates being arranged linearly, and multiple airbags being disposed between the air-cooling plates and the battery packs; the air-cooling plates are slidably disposed inside the casing, and a serpentine air-cooling pipe is disposed inside the air-cooling plate, one end of the serpentine air-cooling pipe being connected to a shunt pipe, and a connector being connected to the lower side of the liquid-cooling plate, wherein the shunt pipe inside adjacent air-cooling plates is slidably inserted into the connector on the lower side of the liquid-cooling plate; a circulation assembly is disposed inside the casing, the circulation assembly including a return pipe that runs through the casing, the return pipe being interconnected with the serpentine air-cooling pipe and the liquid-cooling plate respectively.
[0006] Under normal atmospheric pressure, the airbag is in an uninflated state, the air-cooled plate and the liquid-cooled plate maintain a distance from each other, the connector is separated from the diverter, and the gas flows into the serpentine air-cooled pipe. Under high-altitude low-pressure conditions, the airbag inflates and pushes the air-cooled plate to slide towards the liquid-cooled plate. The connector is inserted into the diverter to form a connection. The liquid inside the liquid-cooled plate flows out through the connector and the diverter, driving the circulation component to operate. The circulation component re-transports the liquid through the return pipe back to the serpentine air-cooled pipe and the liquid-cooled plate for circulation.
[0007] Preferably, the air-cooled plate further includes a rigid shell plate, the serpentine air-cooled pipe is disposed inside the rigid shell plate, the rigid shell plate is slidably disposed inside the housing, and the airbag is disposed between the rigid shell plate and the battery pack.
[0008] Preferably, the rigid shell plate has a convex structure on the side closest to the battery pack. The protruding part of the rigid shell plate is made of a soft material. A heat-conducting plate is provided at the point where the protruding part of the rigid shell plate moves in contact with the battery pack. The heat-conducting plate includes thermally conductive silicone, and the serpentine air-cooling pipe is located inside the thermally conductive silicone. When the airbag expands and pushes the rigid shell plate to slide, the soft material structure deforms, keeping the heat-conducting plate in contact with the battery pack.
[0009] Preferably, the housing has an airflow cavity and a drainage cavity inside. One end of the serpentine air-cooling pipe passes through the drainage cavity and communicates with the airflow cavity. A fan is provided on the outside of the airflow cavity. The housing also has a return cavity inside. The diverter has a Y-shaped structure. One end of the diverter passes through the outer wall of the return cavity, and the other end of the diverter is located inside the return cavity. One end of the return pipe is inside the return cavity, and the end of the return pipe away from the return cavity is inside the drainage cavity. A T-shaped pipe is provided on the lower side of the drainage cavity. The T-shaped pipe communicates with the serpentine air-cooling pipe and the liquid cooling plate, respectively.
[0010] Preferably, a slope plate is fixedly provided on the bottom surface of the inner wall of the reflux cavity, and one end of the reflux pipe located inside the reflux cavity is located at the low point of the slope plate.
[0011] Preferably, the circulation assembly further includes a fixed tube, which is fixedly disposed inside the reflux chamber. One end of the reflux tube inside the reflux chamber communicates with the upper part of the fixed tube. A piston rod is slidably disposed inside the fixed tube, and a piston part is disposed at the bottom end of the piston rod. The bottom of the fixed tube communicates with the reflux chamber, and a second rotating block is rotatably disposed at the point where the fixed tube communicates with the reflux chamber.
[0012] Preferably, the piston portion includes a concave movable plate fixedly disposed at the bottom end of the piston rod. The surface of the concave movable plate has an opening for liquid to pass through. A first rotating block is rotatably disposed in the recess of the concave movable plate, and the first rotating block is movably fitted with the opening on the surface of the concave movable plate.
[0013] Preferably, a power assembly is provided inside the reflux chamber. The power assembly includes a turbine rotatably disposed inside the reflux chamber, located directly below one end of the diversion pipe that passes through the reflux chamber. A protrusion is fixedly disposed on the surface of the turbine, and the protrusion is in movable contact with the bottom of the piston rod. A second spring is sleeved on the outer surface of the piston rod. Liquid flowing out of the diversion pipe impacts the turbine, causing it to rotate. The protrusion on the turbine surface pushes the piston rod against the elastic force of the second spring, causing it to slide. The reciprocating sliding of the piston rod, in conjunction with the opening and closing of the first and second rotating blocks, draws liquid from the low-lying area of the slope plate into the fixed pipe and forces it into the reflux pipe.
[0014] Preferably, the diversion pipe and the insertion pipe are provided with a diversion assembly. The diversion assembly includes a guide pipe opened inside the diversion pipe. The guide pipe and the pipe of the diversion pipe located outside the return cavity are interconnected. A blocking block is slidably provided inside the pipe of the diversion pipe that passes through the return cavity.
[0015] Preferably, the surface of the diverter tube has an insertion hole, and the insertion tube is slidably inserted into the insertion hole. A pin is fixedly installed inside the insertion hole. A stopper plate is slidably installed inside the insertion tube, and a first spring is sleeved on the surface of the stopper plate. A through hole is opened on the surface of the insertion tube. In the uninserted state, the stopper plate seals the insertion tube, and gas is discharged through the guide tube. In the inserted state, the insertion tube is inserted into the insertion hole, and the pin pushes the stopper plate to slide, so that the through hole communicates with the pipe connecting the diverter tube and the return cavity. At the same time, the outer wall of the insertion tube pushes the sealing block to slide and block the airflow channel, allowing liquid to flow into the return cavity.
[0016] This invention provides a sodium-ion battery with heat dissipation function. It has the following beneficial effects:
[0017] 1. This invention uses an airbag between the air-cooled plate and the battery pack. Under normal atmospheric pressure, external gas enters the air-cooled plate to cool the battery pack. When the ambient atmospheric pressure decreases, the air pressure inside the airbag increases and it expands. The increased volume of the expanded airbag pushes the air-cooled plate towards the liquid-cooled plate, allowing the shunt pipe at the end of the air-cooled plate to connect with the insertion pipe on the lower side of the liquid-cooled plate. By using the change in external ambient atmospheric pressure as a physical driving source, the flow path is automatically switched from air-cooled to liquid-cooled circulation using the thrust of the expanded airbag. This eliminates the need for external electronic sensors and control valves, reducing the auxiliary energy consumption of the equipment.
[0018] 2. This invention, by setting a turbine and a piston rod linked to the turbine inside the reflux chamber, allows the liquid inside the liquid-cooled plate to flow out through the pressurization port at the end of the reflux pipe and fall into the reflux chamber after the shunt pipe is connected to the insertion pipe. The gravity and impact force generated by the falling liquid directly drive the turbine to rotate. The rotation of the turbine causes the protrusion to periodically push the piston rod to slide up and down inside the fixed pipe. With the opening and closing of the first and second rotating blocks, the liquid collected inside the reflux chamber is sucked in and pumped back into the reflux pipe. The physical potential energy of the downward flow of the liquid is directly converted into the mechanical kinetic energy that drives the liquid to circulate upward, thus constructing a mechanically driven liquid circulation structure. This eliminates the need for an external electronic water pump and reduces the energy consumption of the battery pack.
[0019] 3. This invention features a convex structure on the side of the rigid shell plate inside the air-cooled plate closest to the battery pack. The protruding portion of the rigid shell plate is made of a soft material, and a heat-conducting plate containing thermally conductive silicone is placed at the point where the rigid shell plate protrudes and contacts the battery pack. When the airbag expands and pushes the rigid shell plate away from the battery pack, the soft material at the protruding portion of the rigid shell plate deforms under tension. This deformation compensates for the displacement distance of the rigid shell plate, ensuring that the heat-conducting plate at the protruding end of the rigid shell plate adheres to the surface of the battery pack. This guarantees that even after the rigid shell plate shifts to liquid cooling mode, the heat generated on the surface of the battery pack can still be stably conducted to the internal pipes through the heat-conducting plate, maintaining the continuity of the cooling process. Attached Figure Description
[0020] Figure 1 This is a front-view perspective view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention from a frontal view. Figure 3 This is a schematic diagram of the front-view cross-sectional structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the rear view structure of the present invention; Figure 6 This is a schematic diagram of the internal structure of the present invention from the upper view. Figure 7 This is a partial right-side cross-sectional view of the present invention. Figure 8 This is a schematic diagram of the internal structure of the present invention from a partial left-side perspective; Figure 9 This is a schematic diagram of the circulation component and power component structure of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of point B in the middle; Figure 11 This is a schematic cross-sectional view of the local differential tube and the diversion tube of the present invention; Figure 12 For the present invention Figure 9 Enlarged view of point C in the diagram; Figure 13 This is a schematic diagram of the internal structure of the fixed tube of the present invention.
[0021] The components are as follows: 1. Casing; 2. Battery pack; 3. Air-cooled plate; 4. Liquid-cooled plate; 5. Airbag; 6. Connecting pipe; 7. Diverter pipe; 8. Return chamber; 9. Fixing pipe; 10. Piston rod; 11. Return pipe; 12. Airflow chamber; 13. Drainage chamber; 14. Slope plate; 15. Guide pipe; 16. Sealing block; 17. Plug plate; 18. First spring; 19. Turbine; 20. Protrusion; 21. First rotating block; 22. Second rotating block; 23. Second spring; 24. Heat-conducting plate. Detailed Implementation
[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0023] Please see Figure 1-10 This invention provides a sodium-ion battery with heat dissipation function, including a housing 1, a plurality of battery packs 2 are disposed inside the housing 1, air-cooled plates 3 and liquid-cooled plates 4 are disposed on both sides of the battery packs 2, the plurality of air-cooled plates 3 and liquid-cooled plates 4 are arranged linearly, and a plurality of airbags 5 are disposed between the air-cooled plates 3 and the battery packs 2. The air-cooled plate 3 is slidably disposed inside the housing 1. A serpentine air-cooled pipe is disposed inside the air-cooled plate 3. One end of the serpentine air-cooled pipe is connected to a diversion pipe 7. A plug pipe 6 is connected to the lower side of the liquid-cooled plate 4. The diversion pipe 7 inside the adjacent air-cooled plate 3 is slidably plugged into the plug pipe 6 on the lower side of the liquid-cooled plate 4. A circulation assembly is disposed inside the housing 1. The circulation assembly includes a return pipe 11 that runs through the housing 1. The return pipe 11 is connected to the serpentine air-cooled pipe and the liquid-cooled plate 4 respectively.
[0024] Specifically, under normal atmospheric pressure conditions in plains areas, the airbag 5 is in an uninflated state, and the air-cooled plate 3 and the liquid-cooled plate 4 maintain a distance. At this time, the insertion pipe 6 on the lower side of the liquid-cooled plate 4 is separated from the shunt pipe 7 inside the air-cooled plate 3. External gas enters the serpentine air-cooled pipe inside the air-cooled plate 3 and flows to dissipate heat and cool the battery pack 2. When the equipment is in a high-altitude, low-pressure environment, the external atmospheric pressure decreases, and the air pressure inside the airbag 5 increases relatively, causing it to expand. The increased volume of the airbag 5 pushes the air-cooled plate 3 to slide towards the liquid-cooled plate 4 inside the casing 1. The sliding of the air-cooled plate 3 causes the shunt pipe 7 to move towards the insertion pipe 6, so that the shunt pipe 7 inside the adjacent air-cooled plate 3 and the insertion pipe on the lower side of the liquid-cooled plate 4... Pipes 6 are slidably connected and interconnected; after the shunt pipe 7 is connected to the insertion pipe 6, the liquid inside the liquid cooling plate 4 flows downward and drives the circulation component inside the housing 1 to operate. The circulation component pumps the outflowing liquid into the return pipe 11. The liquid inside the return pipe 11 is transported upward and re-injected into the serpentine air-cooling pipe and the liquid cooling plate 4 respectively, completing the circulation flow of the liquid. The overall structure relies on the change of external ambient air pressure as the driving source and uses the volume expansion of the airbag 5 to convert it into mechanical thrust, completing the automatic docking of the pipeline. It can realize the automatic switching between air-cooling state and liquid-cooling circulation state without external electronic sensors and control valves, which improves the heat dissipation adaptability of sodium-ion batteries in different altitude environments and the operational stability of the overall structure.
[0025] Please see Figure 7 The air-cooled plate 3 also includes a rigid shell plate, a serpentine air-cooled pipe is disposed inside the rigid shell plate, the rigid shell plate is slidably disposed inside the shell 1, and the airbag 5 is disposed between the rigid shell plate and the battery pack 2.
[0026] Specifically, the airbag 5 is positioned between the rigid shell plate and the battery pack 2. When the sodium-ion battery is in a low-pressure environment, the increased volume generated by the expansion of the airbag 5 can directly act on the surface of the rigid shell plate. The rigid shell plate provides external support and protection for the serpentine air-cooling pipe, preventing deformation and damage to the serpentine air-cooling pipe caused by the expansion and compression of the airbag 5. At the same time, after being pushed by the airbag 5, the rigid shell plate slides outward as a whole inside the shell 1. The overall sliding of the rigid shell plate directly drives the shunt pipe 7 to move synchronously towards the insertion pipe 6. This ensures the integrity and physical stability of the air-cooling plate 3 during the sliding process, ensuring that the shunt pipe 7 can be accurately inserted into the insertion pipe 6, improving the accuracy of mechanical transmission and the safety factor of the internal pipeline operating under different pressure environments.
[0027] Please see Figure 7 The rigid shell plate has a convex structure on the side near the battery pack 2. The protruding part of the rigid shell plate is made of soft material. A heat-conducting plate 24 is provided at the part of the rigid shell plate that is in contact with the battery pack 2. The heat-conducting plate 24 includes thermally conductive silicone, and the serpentine air-cooling pipe is located inside the thermally conductive silicone.
[0028] Specifically, the rigid shell plate has a convex structure on the side closest to the battery pack 2, and the protruding part of the rigid shell plate uses a soft material structure, giving the protruding part of the rigid shell plate the physical property of being deformable and stretchable. Under normal air-cooling conditions, the heat dissipated by the battery pack 2 is transferred to the heat-conducting plate 24. Since the heat-conducting plate 24 includes thermally conductive silicone and the serpentine air-cooling pipe is completely wrapped inside the thermally conductive silicone, the heat can be quickly conducted to the gas flowing inside the serpentine air-cooling pipe to complete the cooling process. When the airbag 5 inflates and pushes the rigid shell plate to slide away from the battery pack 2, the soft material structure at the protruding part of the rigid shell plate is subjected to tension. The deformation and extension of the soft material structure compensates for the displacement distance of the rigid shell plate sliding outward, ensuring that the heat-conducting plate 24 located at the protruding end of the rigid shell plate remains in contact with the surface of the battery pack 2. This ensures that even after the rigid shell plate shifts to liquid cooling mode, the heat generated on the surface of the battery pack 2 can still be stably conducted to the liquid flowing inside the serpentine air-cooling pipe through the heat-conducting plate 24, avoiding the problem of the heat-conducting plate 24 detaching from the surface of the battery pack 2 due to the displacement of the rigid shell plate, and maintaining the continuous and uninterrupted heat dissipation capability of the battery pack 2 in both air-cooling and liquid-cooling modes.
[0029] Please see Figure 3 , Figure 4 and Figure 7 The housing 1 has an airflow cavity 12 and a drainage cavity 13 inside. One end of the serpentine air-cooling pipe passes through the drainage cavity 13 and communicates with the airflow cavity 12. A fan is provided on the outside of the airflow cavity 12. The housing 1 also has a reflux cavity 8 inside, and the diversion pipe 7 has a Y-shaped structure. One end of the diversion pipe 7 passes through the outer wall of the reflux cavity 8, and the other end of the diversion pipe 7 is located inside the reflux cavity 8. One end of the return pipe 11 is connected to the inside of the return cavity 8, and the other end of the return pipe 11 away from the return cavity 8 is connected to the inside of the drainage cavity 13. A T-shaped pipe is provided on the lower side of the drainage cavity 13, and the T-shaped pipe is connected to the serpentine air-cooling pipe and the liquid-cooling plate 4 respectively.
[0030] Specifically, under normal air-cooling conditions, the fan located outside the airflow cavity 12 operates, continuously drawing external air into the airflow cavity 12. The air entering the airflow cavity 12 directly enters the serpentine air-cooling pipe passing through the drainage cavity 13. The air flowing inside the serpentine air-cooling pipe absorbs the heat generated on the surface of the battery pack 2, completing the air-cooling cooling. When the device switches to liquid-cooling circulation mode due to changes in ambient air pressure, the liquid flowing out from inside the liquid cooling plate 4 flows into the return cavity 8 through the Y-shaped pipe of the distribution pipe 7. The liquid collected in the return cavity 8 is driven into the return cavity 8 by the circulation components. In the through return pipe 11, the liquid entering the return pipe 11 is transported upward along the return pipe 11 to the inside of the drainage cavity 13; the liquid entering the drainage cavity 13 flows downward along the T-shaped pipe provided on the lower side of the drainage cavity 13, guided by the physical structure of the T-shaped pipe being interconnected with the serpentine air-cooling pipe and the liquid-cooling plate 4 respectively, the liquid inside the T-shaped pipe is evenly distributed and simultaneously injected into the inside of the serpentine air-cooling pipe and the inside of the liquid-cooling plate 4; the liquid injected into the inside of the serpentine air-cooling pipe and the inside of the liquid-cooling plate 4 flows on both sides of the battery pack 2 and absorbs heat, and the liquid after absorbing heat flows back into the branch pipe 7 and falls into the return cavity 8; By arranging the airflow cavity 12, the drainage cavity 13, and the return cavity 8 in a spatially isolated manner inside the housing 1, the gas flow path and the liquid circulation path are made independent and do not interfere with each other. The drainage cavity 13, combined with the T-shaped tube connection, ensures that the upwardly transported cooling liquid can enter the air-cooled plate 3 and the liquid-cooled plate 4 evenly and synchronously, increasing the physical contact area between the cooling liquid and both sides of the battery pack 2, and ensuring the overall liquid cooling efficiency of the sodium-ion battery under low-pressure environment.
[0031] Please see Figure 3 A slope plate 14 is fixedly installed on the bottom surface of the inner wall of the reflux chamber 8, and one end of the reflux pipe 11 located inside the reflux chamber 8 is located in the depression of the slope plate 14.
[0032] Specifically, when the sodium-ion battery with heat dissipation function switches to liquid cooling circulation mode, the liquid flowing into the return cavity 8 from the shunt pipe 7 is subject to gravity and slides down along the surface of the slope plate 14 fixedly installed on the bottom of the inner wall of the return cavity 8. The liquid sliding down along the surface of the slope plate 14 is collected in the low-lying area of the slope plate 14 according to the inclination angle of the slope plate 14. One end of the return pipe 11 located inside the return cavity 8 is located in the low-lying area of the slope plate 14, so that the end of the return pipe 11 that draws in liquid is always immersed in the liquid collected in the low-lying area of the slope plate 14. The inclined design of the slope plate 14 is used to physically guide and concentrate the liquid that falls into the return cavity 8, preventing the liquid from being dispersed and accumulating or remaining on the bottom surface of the return cavity 8, ensuring that the liquid inside the return cavity 8 can be quickly and completely drawn into the return pipe 11, and ensuring the continuity and sufficiency of the liquid circulation supply process.
[0033] Please see Figure 3 The circulation assembly also includes a fixed tube 9, which is fixedly installed inside the return cavity 8. One end of the return tube 11 located inside the return cavity 8 is connected to the upper part of the fixed tube 9. A piston rod 10 is slidably arranged inside the fixed tube 9. A piston part is provided at the bottom end of the piston rod 10. The bottom of the fixed tube 9 is connected to the return cavity 8. A second rotating block 22 is rotatably arranged at the connection between the fixed tube 9 and the return cavity 8.
[0034] Specifically, the fixed tube 9 is fixedly installed inside the return chamber 8, and one end of the return pipe 11 located inside the return chamber 8 is connected to the upper part of the fixed tube 9, forming an upward liquid transport channel. When the piston rod 10 slides upward inside the fixed tube 9, the piston part at the bottom of the piston rod 10 generates an upward suction negative pressure inside the fixed tube 9. The second rotating block 22, which is rotatably installed at the connection between the fixed tube 9 and the return chamber 8, is opened upward by the suction negative pressure, and the liquid collected inside the return chamber 8 is sucked into the fixed tube 9 through the opening of the second rotating block 22. When the piston rod 10 slides downward inside the fixed tube 9, the piston part squeezes the liquid entering the fixed tube 9 downward, and the liquid entering the fixed tube 9 is pushed by the downward pressure to the second rotating block 22. Rotating block 22 rotates downwards, and the second rotating block 22 rotates downwards to close the connection between the fixed pipe 9 and the return chamber 8, preventing the liquid inside the fixed pipe 9 from flowing back into the return chamber 8. At this time, the liquid squeezed by the piston moves upwards along the fixed pipe 9 and enters the return pipe 11, which is connected to the upper part of the fixed pipe 9. Using the physical pressure difference formed by the reciprocating sliding of the piston rod 10 inside the fixed pipe 9, combined with the physical characteristic of the second rotating block 22 opening and closing in one direction under different pressures, the liquid collected inside the return chamber 8 is stably and continuously pumped into the return pipe 11, forming a purely mechanically driven liquid suction operation structure. This eliminates the need for an external electronic water pump and improves the fault prevention capability and structural stability of the entire circulation component in complex operating environments.
[0035] Please see Figure 13 The piston part includes a concave movable plate fixedly installed at the bottom end of the piston rod 10. The surface of the concave movable plate has an opening for liquid to pass through. A first rotating block 21 is rotatably installed in the concave part of the concave movable plate. The first rotating block 21 is in movable contact with the opening on the surface of the concave movable plate.
[0036] Specifically, when the piston rod 10 slides downward inside the fixed tube 9, the concave movable plate fixed at the bottom of the piston rod 10 slides downward simultaneously. At this time, the liquid inside the fixed tube 9 located on the lower side of the concave movable plate exerts an upward thrust on the first rotating block 21 rotatably disposed in the concave recess of the concave movable plate. The first rotating block 21 rotates under the upward thrust and disengages from the opening on the surface of the concave movable plate. At this time, the liquid inside the fixed tube 9 located on the lower side of the concave movable plate passes through the opening on the surface of the concave movable plate and enters the upper space of the concave movable plate. When the piston rod 10 slides upward inside the fixed tube 9, it passes through the concave movable plate and enters the upper space of the concave movable plate. The liquid in the upper space of the concave movable plate exerts downward pressure on the first rotating block 21. The first rotating block 21 rotates downward under the downward pressure and comes into contact with the opening on the surface of the concave movable plate, thereby sealing the opening on the surface of the concave movable plate. At this time, the liquid in the upper space of the concave movable plate moves upward along with the piston rod 10 and enters the return pipe 11. Through the reciprocating sliding of the piston rod 10 and the unidirectional physical opening and closing of the first rotating block 21 and the opening, the unidirectional upward transport of liquid in the fixed pipe 9 is completed, preventing the liquid in the fixed pipe 9 from flowing downward back, and ensuring the unidirectional stable flow of cooling liquid during the liquid cooling cycle.
[0037] Please see Figure 9 and Figure 12 The return chamber 8 is equipped with a power assembly, which includes a turbine 19 that is rotatably installed inside the return chamber 8. The turbine 19 is located directly below one end of the split pipe 7 that passes through the return chamber 8. A protrusion 20 is fixedly provided on the surface of the turbine 19. The protrusion 20 is in movable contact with the bottom of the piston rod 10. A second spring 23 is sleeved on the outer surface of the piston rod 10.
[0038] Specifically, after the insertion pipe 6 and the distribution pipe 7 are slidably connected and interconnected, the liquid inside the liquid cooling plate 4 enters the distribution pipe 7 through the insertion pipe 6. Since a pressure boosting port is provided at one end of the distribution pipe 7 that extends into the return cavity 8, the liquid flowing out from the end of the distribution pipe 7 generates a liquid flow with high impact force under the action of gravity and the pressure boosting port. Since the turbine 19, which is rotatably installed inside the return cavity 8, is located directly below the end of the distribution pipe 7, the liquid flow with impact force directly impacts the turbine 19 downwards. The gravity of the liquid and the impact force together drive the turbine 19 to rotate continuously inside the return cavity 8. When the turbine 19 rotates, it synchronously drives the protrusion 20 fixed on its surface to rotate. During the rotation of the protrusion 20, it periodically pushes the bottom of the piston rod 10 upward. With the elastic restoring thrust released by the second spring 23 sleeved on the outer surface of the piston rod 10, the rotational motion of the turbine 19 is converted into the reciprocating linear motion of the piston rod 10 inside the fixed tube 9. The pressure port set at the end of the diversion tube 7 is used to enhance the impact kinetic energy of the liquid flow, and the power of the liquid flow is directly converted into the mechanical energy to drive the circulation component, forming an automatic cooling effect and reducing the energy loss caused by the additional drive components.
[0039] Please see Figure 9 and Figure 11 The diversion pipe 7 and the insertion pipe 6 are equipped with a diversion assembly. The diversion assembly includes a guide pipe 15 opened inside the diversion pipe 7. The guide pipe 15 and the pipe of the diversion pipe 7 located outside the return cavity 8 are interconnected. A sealing block 16 is slidably installed inside the pipe of the diversion pipe 7 that connects to the return cavity 8.
[0040] Specifically, when the sodium-ion battery is in a conventional air-cooled state, the shunt pipe 7 and the connector 6 are separated. The gas flowing inside the serpentine air-cooling pipe absorbs heat and then enters the shunt pipe 7. The gas entering the shunt pipe 7 moves along the guide pipe 15 located inside the shunt pipe 7. Since the guide pipe 15 and the shunt pipe 7 are connected to each other outside the return cavity 8, the gas entering the guide pipe 15 is directly discharged to the outside of the casing 1. At the same time, a sealing block 16 is slidably installed inside the pipe of the shunt pipe 7 that connects to the return cavity 8. The sealing block 16 physically seals the pipe of the shunt pipe 7 leading to the return cavity 8. This ensures that the gas that has absorbed heat can be smoothly discharged to the external environment during the air-cooling process. Furthermore, the physical barrier effect of the sealing block 16 cuts off the path of the gas entering the return cavity 8, preventing the gas from interfering with the normal operation of the liquid cooling circulation components and ensuring the spatial isolation of the flow paths of the air-cooling and liquid-cooling heat dissipation media.
[0041] Please see Figure 11 The surface of the diversion pipe 7 is provided with a plug hole, the plug pipe 6 is slidably inserted into the plug hole, and a pin is fixedly installed inside the plug hole; A stopper plate 17 is slidably installed inside the insertion pipe 6. A first spring 18 is sleeved on the surface of the stopper plate 17. A through hole is opened on the surface of the insertion pipe 6. When the insertion pipe 6 is inserted into the insertion hole, the through hole is connected to the pipes that connect the diversion pipe 7 and the return cavity 8.
[0042] Specifically, when the equipment switches to liquid cooling circulation mode, the movement of the distributor 7 causes the insertion tube 6 to slide into the insertion hole on the surface of the distributor 7. During insertion, the pin fixed inside the insertion hole presses against and squeezes the plug plate 17 slidingly disposed inside the insertion tube 6. The plug plate 17 slides and compresses the first spring 18, causing the through hole on the surface of the insertion tube 6 to be unobstructed. At this time, liquid enters through the upper part of the distributor 7. Simultaneously, as the insertion tube 6 continues to slide in, the outer wall of the insertion tube 6 physically presses inward against the sealing block 16 slidingly disposed inside the pipe that passes through the return cavity 8 of the distributor 7. After being squeezed, 16 slides to the other end of the diversion pipe 7, so that the sealing block 16 completely seals the end where the guide pipe 15 is located. Since the guide pipe 15 is sealed by the sealing block 16, the liquid entering the diversion pipe 7 can only be discharged from the end that is connected to the return cavity 8. The insertion stroke of the insertion pipe 6 synchronously drives the plug plate 17 and the sealing block 16 to move, while opening the liquid cooling circulation path, forcibly sealing the gas guide pipe 15, ensuring that the liquid is guided to the top of the turbine 19 for impact, avoiding the liquid from flowing out through the guide pipe 15, and realizing the efficient mechanical switching from the gas flow path to the liquid flow path.
[0043] Working Principle: Under normal atmospheric pressure conditions, the airbag 5 is in its initial, uninflated state. The air-cooled plate 3 and the liquid-cooled plate 4 maintain their original distance, and the insertion pipe 6 on the lower side of the liquid-cooled plate 4 and the diversion pipe 7 at the end of the air-cooled plate 3 are separated. At this time, the plug plate 17 inside the insertion pipe 6 completely seals the insertion pipe 6 under the action of the first spring 18, while the sealing block 16 in the outer pipe of the diversion pipe 7 moves away from the guide pipe 15, keeping the guide pipe 15 completely open. When the equipment is running, the external fan sends gas into the airflow chamber 12 inside the housing 1. The gas enters evenly from the airflow chamber 12 into the serpentine air-cooling pipe inside the rigid housing of the air-cooled plate 3. During the flow of the airflow in the air-cooling pipe, the heat-conducting plate 24 attached to the protruding soft material of the rigid housing absorbs the heat emitted by the adjacent battery pack 2. Then, the gas carrying heat flows sequentially through the pipes outside the guide pipe 15 and the diversion pipe 7, and finally exits outside the housing 1, completing the cooling process of the gas flow.
[0044] When the equipment is in a high-altitude, low-pressure environment, the airbag 5 expands due to the decrease in external air pressure, thereby pushing the air-cooled plate 3 to one side of the liquid-cooled plate 4. As the displacement occurs, the insertion tube 6 on the liquid-cooled plate 4 gradually inserts into the diversion tube 7. The pins in the insertion holes of the diversion tube 7 then abut against and squeeze the plug plate 17 inside the insertion tube 6, forcing the plug plate 17 to slide outward against the elastic force of the first spring 18. When the insertion tube 6 moves to a specific depth, the through hole on its surface communicates with one end of the diversion tube 7. At the same time, the outer wall of the insertion tube 6 squeezes the sealing block 16, causing it to slide and block the guide tube 15. At this time, the liquid inside the liquid cooling plate 4 flows downward through the insertion pipe 6 and the diversion pipe 7. Since the end of the diversion pipe 7 is equipped with a pressure boosting port, the outflowing liquid drives the turbine 19 located below the diversion pipe 7 in the return cavity 8 to rotate due to the impact force generated by the pressure boosting port and gravity. The protrusion 20 on the turbine 19 then periodically pushes the piston rod 10 in the fixed pipe 9, forcing the piston rod 10 to slide up and down against the force of the second spring 23. The liquid falling into the return cavity 8 collects in the low-lying area along the bottom slope plate 14. When the piston rod 10 slides upward in the fixed pipe 9, a negative pressure is generated in the pipe. The second rotating block 22 at the junction of the return cavity 8 and the fixed pipe 9 is pushed by the airflow and flips open, and the liquid is drawn into the fixed pipe 9. When the piston rod 10 slides downward, the second rotating block 22 closes and seals the bottom of the fixed pipe 9. At the same time, the first rotating block 21 at the recess of the piston part movable plate flips open, allowing the liquid in the fixed pipe 9 to pass through the movable plate and stay on the upper side of the first rotating block 21. When the piston rod 10 rises again, the first rotating block 21 rotates and closes, pushing the liquid above it upward and discharging it into the return pipe 11. The liquid pressed into the return pipe 11 is transported upward to the drainage chamber 13 above the housing 1, and finally redistributed and injected into the serpentine air-cooling pipe and liquid-cooling plate 4 through the T-shaped pipe on the lower side of the drainage chamber 13, completing the entire liquid circulation flow.
Claims
1. A sodium-ion battery with heat dissipation function, characterized in that, Includes a housing (1), inside which multiple battery packs (2) are arranged, and on both sides of the battery packs (2) are air-cooled plates (3) and liquid-cooled plates (4), the multiple air-cooled plates (3) and liquid-cooled plates (4) are arranged in a linear arrangement, and multiple airbags (5) are arranged between the air-cooled plates (3) and the battery packs (2). The air-cooled plate (3) is slidably disposed inside the housing (1). A serpentine air-cooled pipe is disposed inside the air-cooled plate (3). A diversion pipe (7) is connected to one end of the serpentine air-cooled pipe. A plug pipe (6) is connected to the lower side of the liquid-cooled plate (4). The diversion pipe (7) inside the adjacent air-cooled plate (3) is slidably plugged into the plug pipe (6) on the lower side of the liquid-cooled plate (4). A circulation assembly is disposed inside the housing (1). The circulation assembly includes a return pipe (11) that runs through the housing (1). The return pipe (11) is connected to the serpentine air-cooled pipe and the liquid-cooled plate (4) respectively.
2. A sodium-ion battery with heat dissipation function according to claim 1, characterized in that, The air-cooled plate (3) also includes a rigid shell plate, the serpentine air-cooled pipe is disposed inside the rigid shell plate, the rigid shell plate is slidably disposed inside the housing (1), and the airbag (5) is disposed between the rigid shell plate and the battery pack (2).
3. A sodium-ion battery with heat dissipation function according to claim 2, characterized in that, The rigid shell plate has a convex structure on the side near the battery pack (2). The protruding part of the rigid shell plate is made of soft material. A heat-conducting plate (24) is provided at the protruding part of the rigid shell plate and the movable contact point with the battery pack (2). The heat-conducting plate (24) includes thermally conductive silicone. The serpentine air-cooling pipe is located inside the thermally conductive silicone.
4. A sodium-ion battery with heat dissipation function according to claim 3, characterized in that, The housing (1) has an airflow cavity (12) and a drainage cavity (13) inside. One end of the serpentine air-cooling pipe passes through the drainage cavity (13) and communicates with the airflow cavity (12). A fan is provided on the outside of the airflow cavity (12). The housing (1) is also provided with a return cavity (8), the diversion pipe (7) is Y-shaped, one end of the diversion pipe (7) passes through the outer wall of the return cavity (8), and the other end of the diversion pipe (7) is located inside the return cavity (8); One end of the return pipe (11) extends through the interior of the return cavity (8), and the other end of the return pipe (11) away from the return cavity (8) extends through the interior of the drainage cavity (13). A T-shaped pipe is provided on the lower side of the drainage cavity (13), and the T-shaped pipe is connected to the serpentine air-cooling pipe and the liquid-cooling plate (4) respectively.
5. A sodium-ion battery with heat dissipation function according to claim 4, characterized in that, A slope plate (14) is fixedly provided on the bottom surface of the inner wall of the reflux cavity (8), and one end of the reflux pipe (11) located inside the reflux cavity (8) is located in the low-lying area of the slope plate (14).
6. A sodium-ion battery with heat dissipation function according to claim 1, characterized in that, The circulation assembly also includes a fixed tube (9), which is fixedly disposed inside the reflux chamber (8). One end of the reflux tube (11) located inside the reflux chamber (8) is connected to the upper part of the fixed tube (9). A piston rod (10) is slidably arranged inside the fixed tube (9). A piston part is provided at the bottom end of the piston rod (10). The bottom of the fixed tube (9) is connected to the reflux cavity (8). A second rotating block (22) is rotatably arranged at the connection between the fixed tube (9) and the reflux cavity (8).
7. A sodium-ion battery with heat dissipation function according to claim 6, characterized in that, The piston part includes a concave movable plate fixedly disposed at the bottom end of the piston rod (10). The surface of the concave movable plate is provided with an opening for liquid to pass through. A first rotating block (21) is rotatably disposed in the concave part of the concave movable plate. The first rotating block (21) is movably fitted with the opening on the surface of the concave movable plate.
8. A sodium-ion battery with heat dissipation function according to claim 7, characterized in that, The return cavity (8) is provided with a power assembly, which includes a turbine (19) that is rotatably disposed inside the return cavity (8). The turbine (19) is located directly below one end of the diversion pipe (7) that passes through the return cavity (8). The surface of the turbine (19) is fixedly provided with a protrusion (20), the protrusion (20) is in movable contact with the bottom of the piston rod (10), and a second spring (23) is sleeved on the outer surface of the piston rod (10).
9. A sodium-ion battery with heat dissipation function according to claim 8, characterized in that, The diversion pipe (7) and the insertion pipe (6) are provided with a diversion assembly. The diversion assembly includes a guide pipe (15) opened inside the diversion pipe (7). The guide pipe (15) and the pipe of the diversion pipe (7) located outside the return cavity (8) are interconnected. A sealing block (16) is slidably provided inside the pipe of the diversion pipe (7) that passes through the return cavity (8).
10. A sodium-ion battery with heat dissipation function according to claim 9, characterized in that, The surface of the diversion pipe (7) is provided with a plug hole, the plug pipe (6) is slidably inserted into the plug hole, and a pin is fixedly provided inside the plug hole; A plug plate (17) is slidably disposed inside the insertion tube (6). A first spring (18) is sleeved on the surface of the plug plate (17). A through hole is opened on the surface of the insertion tube (6). When the insertion tube (6) is inserted into the insertion hole, the through hole is connected to the pipe that connects the diversion pipe (7) and the return cavity (8).