An automatic acid circulation system for tubular flooded power batteries

Abstract

The present invention provides an automatic acid circulation system for tubular liquid-rich power storage batteries, including an automatic battery conveying system and a battery acid circulation charging system, wherein the battery acid circulation charging system includes an acid mist collector, an acid circulation acid inlet main pipe, a power storage battery, an acid circulation acid return main pipe, a low-density acid storage tank, a circulating acid tank high-density acid storage tank and a cooling system, wherein the input end of the acid mist collector is connected to the output end of the acid circulation acid return main pipe, and the output end is connected to the input end of the acid mist purifier. The present invention solves the problem of excessively high internal temperature of the battery during the acid circulation process, ensures the effect of battery formation, and improves the battery service life; the present invention can also automatically control the speed of the circulation pump according to the battery capacity to control the speed of acid injection, which is conducive to reducing energy consumption and saving electric energy, and at the same time purifies the acid mist during the battery formation process, which is conducive to protecting the environment.

Description

Technical Field

[0001] The invention relates to the technical field of power batteries, in particular to an automatic acid circulation system for a tubular liquid-flooded power storage battery. Background Art

[0002] The existing tubular flooded power battery automatic acid circulation system has the following shortcomings:

[0003] (1) The currently used flooded battery acid circulation system is generally manually loaded and unloaded, which is labor-intensive and costly.

[0004] (2) Regardless of the battery capacity, the pump that provides power during the acid circulation process always runs at full speed, wasting energy; during the battery formation and charging process, the electrolyte temperature is easy to rise and is difficult to control, which can easily lead to poor conversion of the active material structure during the battery formation process, affecting the battery life; acid overflows during the acid circulation process, and acid mist escapes, which can easily lead to environmental pollution. Since charging is performed at the beginning of formation, the polarization voltage is too high, which can easily make formation difficult in the initial stage, resulting in a waste of electrical energy;

[0005] (3) The existing device is not convenient for adjusting the loading and unloading positions of the batteries. During use, the position of the roller is relatively fixed, which easily causes the batteries to be concentrated in a group of channels of the battery charging and storage rack, thereby reducing the efficiency of battery production. Summary of the invention

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0007] An automatic acid circulation system for a tubular flooded power battery, comprising an automatic battery conveying system and a battery acid circulation charging system;

[0008] The battery acid circulation charging system comprises an acid mist collector, an acid circulation acid inlet main pipe, a power storage battery, an acid circulation acid return main pipe, a low-density acid storage tank, a circulation acid tank, a high-density acid storage tank and a cooling system;

[0009] An acid mist collector, the input end of which is connected to the output end of the acid circulation back to the acid main pipe, and the output end of which is connected to the input end of the acid mist purifier;

[0010] The acid circulation acid inlet main pipe has an input end connected to the output end of the circulating acid tank, and the output end is respectively connected to the power storage battery, the acid circulation acid return main pipe, the low-density acid storage tank and the high-density acid storage tank input end;

[0011] The power storage battery has an input end connected to the output end of the acid circulation inlet main pipe, and an output end connected to the input end of the acid circulation back to the acid main pipe;

[0012] A circulating acid tank, the input end of which is respectively connected to the output end of the high-density acid storage tank and the output end of the low-density acid storage tank, and the output end of which is respectively connected to the input end of the acid circulation acid inlet main pipe and the input end of the acid circulation acid return main pipe;

[0013] The high-density acid storage tank has an input end connected to an output end of a circulating acid tank through a circulating pipeline, and an output end connected to an input end of the circulating acid tank.

[0014] As a preferred technical solution of the present application, a first liquid level sensor for detecting the liquid level inside the low-density acid storage tank is installed inside the low-density acid storage tank, an acid tank online density meter, an acid tank temperature sensor and a second liquid level sensor are installed inside the circulating acid tank, a third liquid level sensor is installed inside the high-density acid storage tank, a liquid injection port connected to the acid circulation acid inlet main pipe and the acid circulation acid return main pipe is installed at the top of the power battery, and a negative pressure fan is connected between the acid mist collector and the acid mist purifier.

[0015] As a preferred technical solution of the present application, the cooling system includes a water-cooling lead pipe, a cooling tower and a cooling water pool. The water-cooling lead pipe is coiled inside the circulating acid tank, the input end of the water-cooling lead pipe is connected to the output end of the cooling water pool, the output end is connected to the input end of the cooling tower, and the output end of the cooling tower is connected to the input end of the cooling water pool.

[0016] As the preferred technical solution of the present application, the automatic battery conveying system includes a battery charging and storage rack, a conveying roller, a conveyor, a baffle, a loading cylinder, a loading battery push plate, an isolation structure, a moving structure, a unloading cylinder and a unloading battery push plate. The moving structure is installed on both sides of the conveyor, and a conveying roller is arranged on the top of the moving structure close to the battery charging and storage rack. A baffle is installed on one side of the top of the conveying roller, and a loading cylinder is arranged on the top of the moving structure away from the battery charging and storage rack. A loading battery push plate is installed at the telescopic end of the loading cylinder, and an isolation structure is arranged on the top of the loading cylinder away from the baffle. A battery charging and storage rack is arranged on one side of the conveying roller, and a unloading cylinder is installed on one side inside the battery charging and storage rack, and a unloading battery push plate is installed at the telescopic end of the unloading cylinder.

[0017] As a preferred technical solution of the present application, the conveying roller includes a fixed shell installed on one side of the top of the moving structure, a roller rotatably connected to the inside of the fixed shell, a gear set installed inside one side of the fixed shell and connected to the rotating end of the roller, and a second motor installed on the other side of the fixed shell and connected to the rotating end of the roller. The conveyor includes a support frame installed on one side of the moving structure, a first motor installed on one side of the support frame, and a plate chain installed inside the support frame.

[0018] As a preferred technical solution of the present application, the movable structure includes a second fixed frame installed on one side of the support frame, a slide rail fixed to the top of the second fixed frame, a screw rod fixed on both sides of the top of the second fixed frame, a third motor installed on one side of the second fixed frame and the rotating end of which is connected to the screw rod, a first movable seat threadedly connected to the outside of the screw rod and connected to the fixed shell, and a loading assembly arranged on the other side of the support frame, the loading assembly includes a first fixed frame installed on the other side of the support frame, a slide rod fixed on both sides of the top of the first fixed frame, and a second movable seat sliding on the outside of the slide rod and connected to the baffle.

[0019] As a preferred technical solution of the present application, a sliding structure is provided between the slide rail and the first movable seat, and the loading cylinder is installed on the top of the second movable seat.

[0020] As a preferred technical solution of the present application, the isolation structure includes a support plate installed on one side of the top of the second movable seat, a transmission gear rotatably connected to one side of the support plate, a differential installed on one side of the support plate and the rotating end of which is connected to the transmission gear, a drive motor installed at the bottom end of the differential, a driven gear installed on the top of one side of the support plate and meshing with the transmission gear, a flip frame rotatably connected to the top of the other side of the support plate and passing through the support plate and connected to the driven gear, a counterweight block installed at one end of the flip frame, a connecting rod rotatably connected to the inside of the bottom end of the flip frame, and a lower cross bar rotatably connected to the bottom end of the connecting rod.

[0021] As a preferred technical solution of the present application, the connecting rods are provided in several groups, and the connecting rods are evenly spaced between the lower cross bar and the turning frame, and the width of the lower cross bar is equal to the width of the plate chain.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In the scheme of this application:

[0024] 1. The present invention solves the problem of excessively high internal temperature of the battery during the formation process, ensures the effect of battery formation, and improves the battery life; the present invention can also automatically control the speed of the circulating pump according to the battery capacity to control the speed of acid injection, which is beneficial to reducing energy consumption and saving electric energy. At the same time, the acid mist is purified during the battery formation process, which is beneficial to protecting the environment;

[0025] 2. The present invention solves the problem of manual handling of traditional battery loading and unloading through the battery automatic conveying system, which is conducive to reducing labor intensity and saving costs;

[0026] 3. The present invention drives the screw rod to operate through the third motor, so that the first movable seat drives the fixed shell to move and adjust the position of the conveying roller, and conveys the power storage battery to other stations of the battery charging and storage rack, which is conducive to ensuring the continuous supply of power storage batteries during the production process, and the storage distribution of power storage batteries is uniform, which is convenient for subsequent processing of power storage batteries;

[0027] 4. The present invention uses a flip frame to block the power battery during transportation, ensuring that the power battery can stay stably at a predetermined position, which is beneficial to preventing the power battery from excessively piling up, overflowing or sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of a battery acid cycle charging system provided for this application;

[0029] Figure 2 A schematic diagram of an automatic battery feeding system for a tubular flooded power battery acid circulation system provided in this application;

[0030] Figure 3 A schematic diagram of an automatic battery feeding system for a tubular flooded power battery acid circulation system provided in this application;

[0031] Figure 4 One of the three-dimensional structural diagrams of the mobile structure provided in this application;

[0032] Figure 5 The second schematic diagram of the three-dimensional structure of the mobile structure provided for this application;

[0033] Figure 6 Schematic diagram of the mobile structure provided for this application

[0034] Figure 7 A schematic diagram of the three-dimensional structure of the conveyor roller provided for this application;

[0035] Figure 8 This is a schematic diagram of the three-dimensional structure of the isolation structure provided in this application.

[0036] Indications in the figure: 1. Acid mist collector; 2. Acid circulation inlet main pipe; 3. Power storage battery; 4. Acid circulation return main pipe; 5. Low-density acid storage tank; 6. First liquid level sensor; 7. Acid tank online density meter; 8. Acid tank temperature sensor; 9. Second liquid level sensor; 10. Circulating acid tank; 11. Water cooling lead pipe; 12. Third liquid level sensor; 13. High-density acid storage tank; 14. Battery charging storage rack; 15. Roller; 16. Gear set; 17. Baffle; 18. Feeding cylinder; 19. Feeding battery push plate; 20. Isolation structure; 21. Flip frame; 22. Connecting rod; 23. Lower cross bar; 24. Support plate; 25. Driving motor; 26. Differential; 27. Transmission gear; 28. Counterweight; 29. ​​Driven gear; 30. Plate chain; 31. First motor; 32. Moving structure; 33. First fixed frame; 34. Slide bar; 35. Third motor; 36. Screw rod; 37. Slide rail; 38. First moving seat; 39. Second moving seat; 40. Second fixed frame; 41. Support frame; 42. Unloading cylinder; 43. Unloading battery push plate; 44. Second motor; 45. Fixed shell. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0038] like Figures 1 to 8 As shown, an embodiment of the present invention provides an automatic acid circulation system for a tubular flooded power battery, including an automatic battery conveying system and a battery acid circulation charging system;

[0039] The battery acid circulation charging system comprises an acid mist collector 1, an acid circulation acid inlet main pipe 2, a power storage battery 3, an acid circulation acid return main pipe 4, a low-density acid storage tank 5, a circulation acid tank 10, a high-density acid storage tank 13 and a cooling system;

[0040] The acid mist collector 1 has an input end connected to the output end of the acid circulation back acid main pipe 4, and an output end connected to the input end of the acid mist purifier;

[0041] The acid circulation acid inlet main pipe 2 has an input end connected to the output end of the circulating acid tank 10, and the output end is respectively connected to the input end of the power storage battery 3, the acid circulation acid return main pipe 4, the low-density acid storage tank 5 and the high-density acid storage tank 13;

[0042] The power storage battery 3 has an input end connected to the output end of the acid circulation acid inlet main pipe 2, and an output end connected to the input end of the acid circulation acid return main pipe 4;

[0043] The circulating acid tank 10 has an input end connected to the output end of the high-density acid storage tank 13 and the output end of the low-density acid storage tank 5, and an output end connected to the input end of the acid circulation acid inlet main pipe 2 and the input end of the acid circulation acid return main pipe 4;

[0044] The high-density acid storage tank 13 has an input end connected to the output end of the circulating acid tank 10 through a circulating pipeline, and an output end connected to the input end of the circulating acid tank 10 .

[0045] The power storage battery 3 is automatically transported to the processing position by the battery automatic transport system, and the battery acid is replenished by the battery acid circulation charging system. At the same time, the acid mist is purified during the battery formation process, which is beneficial to protecting the environment.

[0046] like Figure 1 As shown, a first liquid level sensor 6 for detecting the liquid level inside the low-density acid storage tank 5 is installed inside the low-density acid storage tank 5, an acid tank online density meter 7, an acid tank temperature sensor 8 and a second liquid level sensor 9 are installed inside the circulating acid tank 10, a third liquid level sensor 12 is installed inside the high-density acid storage tank 13, a liquid injection port connected to the acid circulation acid inlet main pipe 2 and the acid circulation acid return main pipe 4 is installed at the top of the power battery 3, and a negative pressure fan is connected between the acid mist collector 1 and the acid mist purifier.

[0047] The height of the liquid level inside the low-density acid storage tank 5 is detected by the first liquid level sensor 6 to adjust the height of the liquid level of the low-density acid storage tank 5. The density, temperature and depth of the sulfuric acid solution in the circulating acid tank 10 are detected by the acid tank online density meter 7, the acid tank temperature sensor 8 and the second liquid level sensor 9 respectively to ensure the safety of the circulating acid tank 10 in the production process. The loop of the acid circulation acid inlet main pipe 2 and the acid circulation acid return main pipe 4 is connected in series with the power storage battery 3 through the injection port at the top of the power storage battery 3. By turning on the negative pressure fan, the acid mist generated by the processing is sucked through the acid mist collector 1 and introduced into the interior of the acid mist purifier for treatment.

[0048] like Figure 1 As shown, the cooling system includes a water cooling lead pipe 11, a cooling tower and a cooling water pool. The water cooling lead pipe 11 is coiled inside the circulating acid tank 10, the input end of the water cooling lead pipe 11 is connected to the output end of the cooling water pool, the output end is connected to the input end of the cooling tower, and the output end of the cooling tower is connected to the input end of the cooling water pool.

[0049] When the temperature inside the circulating acid tank 10 is higher than the set value of 50°C, cooling water is automatically passed through the pipeline into the water cooling lead pipe 11 coiled in the circulating acid tank 10, and heat is exchanged with the acid liquid in the circulating acid tank 10 through the outer wall of the water cooling lead pipe 11 to perform water cooling.

[0050] like Figure 2 and Figure 3As shown, the automatic battery conveying system includes a battery charging and storage rack 14, a conveying roller, a conveyor, a baffle 17, a loading cylinder 18, a loading battery push plate 19, an isolation structure 20, a moving structure 32, a unloading cylinder 42 and a unloading battery push plate 43. The moving structure 32 is installed on both sides of the conveyor. The top of the moving structure 32 close to the battery charging and storage rack 14 is provided with a conveying roller, and a baffle 17 is installed on one side of the top of the conveying roller. The top of the moving structure 32 away from the battery charging and storage rack 14 is provided with a loading cylinder 18, and the telescopic end of the loading cylinder 18 is provided with a loading battery push plate 19. The top of the loading cylinder 18 away from the baffle 17 is provided with an isolation structure 20. The battery charging and storage rack 14 is provided on one side of the conveying roller, and the unloading cylinder 42 is installed on one side inside the battery charging and storage rack 14. The unloading battery push plate 43 is installed on the telescopic end of the unloading cylinder 42.

[0051] The power battery 3 is conveyed to one side of the baffle 17 by the conveyor, and then the loading cylinder 18 is extended to push the loading battery push plate 19 to move, so as to push the power battery 3 away from the plate chain 30, so that the conveying roller conveys the power battery 3 to the inside of the battery charging and storage rack 14. After the battery charging and formation are completed, the unloading cylinder 42 is extended to push the unloading battery push plate 43 to move, so that the unloading battery push plate 43 pushes the power battery 3 out of the battery charging and storage rack 14 and is transported by another set of conveying rollers and conveyors to enter the cleaning and packaging process.

[0052] like Figure 2 , Figure 3 ,and Figure 7 As shown, the conveyor roller includes a fixed shell 45 installed on one side of the top of the moving structure 32, a roller 15 rotatably connected to the inside of the fixed shell 45, a gear set 16 installed inside one side of the fixed shell 45 and connected to the rotating end of the roller 15, and a second motor 44 installed on the other side of the fixed shell 45 and connected to the rotating end of the roller 15. The conveyor includes a support frame 41 installed on one side of the moving structure 32, a first motor 31 installed on one side of the support frame 41, and a plate chain 30 installed inside the support frame 41.

[0053] Start the second motor 44 to drive the gear set 16 to rotate, thereby driving the multiple groups of rollers 15 to operate, and transport the power battery 3 to the inside of the battery charging and storage rack 14; start the first motor 31 to drive the plate chain 30 to operate, and the plate chain 30 transports the power battery 3 to one side of the baffle 17.

[0054] like Figure 4 , Figure 5 and Figure 6As shown specifically, the movable structure 32 includes a second fixed frame 40 installed on one side of the support frame 41, a slide rail 37 fixed on the top of the second fixed frame 40, a screw rod 36 fixed on both sides of the top of the second fixed frame 40, a third motor 35 installed on one side of the second fixed frame 40 and connected to the screw rod 36 at the rotating end, a first movable seat 38 threadedly connected to the outside of the screw rod 36 and connected to the fixed shell 45, and a loading assembly arranged on the other side of the support frame 41, and the loading assembly includes a first fixed frame 33 installed on the other side of the support frame 41, a slide rod 34 fixed on both sides of the top of the first fixed frame 33, and a second movable seat 39 sliding on the outside of the slide rod 34 and connected to the baffle 17.

[0055] When it is necessary to transport the power battery 3 to a single station of the battery charging and storage rack 14, the third motor 35 is started to drive the screw 36 to operate, so that the first movable seat 38 moves back and forth on the surface of the screw 36 through the engagement of the thread on the surface of the screw 36, and drives the fixed shell 45 to move and adjust the position of the conveying roller, so that the conveying roller can transport the power battery 3 to other stations of the battery charging and storage rack 14, and drives the second movable seat 39 to move through the fixed shell 45 through the baffle 17, so that the second movable seat 39 moves the position of the loading cylinder 18, so that the loading cylinder 18 and the loading battery push plate 19 are aligned with the conveying roller, so as to push the power battery 3 to the inside of the conveying roller, and the second movable seat 39 slides on the surface of the first fixed frame 33, so that the first movable seat 38 and the second movable seat 39 move parallel.

[0056] like Figure 4 , Figure 5 and Figure 6 As shown, a sliding structure is formed between the slide rail 37 and the first movable seat 38 , and the loading cylinder 18 is installed on the top of the second movable seat 39 .

[0057] The first movable seat 38 slides on the surface of the slide rail 37 to guide the movement of the first movable seat 38 so that the first movable seat 38 is not likely to cause the fixed shell 45 to shake.

[0058] like Figure 8 As shown, the isolation structure 20 includes a support plate 24 installed on one side of the top of the second movable seat 39, a transmission gear 27 rotatably connected to one side of the support plate 24, a differential 26 installed on one side of the support plate 24 and connected to the transmission gear 27 at a rotating end, a drive motor 25 installed at the bottom end of the differential 26, a driven gear 29 installed on the top of one side of the support plate 24 and meshing with the transmission gear 27, a flip frame 21 rotatably connected to the top of the other side of the support plate 24 and penetrating the support plate 24 and connected to the driven gear 29, a counterweight block 28 installed at one end of the flip frame 21, a connecting rod 22 rotatably connected to the inside of the bottom end of the flip frame 21, and a lower horizontal bar 23 rotatably connected to the bottom end of the connecting rod 22.

[0059] By starting the drive motor 25 to rotate, the drive motor 25 drives the transmission gear 27 to rotate through the differential 26, and the transmission gear 27 pushes the driven gear 29 to rotate through the teeth. At the same time, the driven gear 29 drives the flip frame 21 to flip downward, so that the flip frame 21 drives the lower cross bar 23 to be placed horizontally on the top of the plate chain 30, blocking the power batteries 3 transported by the plate chain 30, so that the feeding cylinder 18 can only push one group of power batteries 3 at the same time, and the power batteries 3 are released by the reverse rotation of the drive motor 25, and the weight of the isolation structure 20 is balanced by the counterweight block 28, so that the isolation structure 20 can move smoothly under the action of gravity.

[0060] like Figure 8 As shown, a plurality of groups of connecting rods 22 are provided, and the plurality of groups of connecting rods 22 are evenly spaced between the lower cross bar 23 and the turning frame 21 , and the width of the lower cross bar 23 is equal to the width of the plate chain 30 .

[0061] The flip frame 21 is connected to the lower cross bar 23 through multiple groups of connecting rods 22, so that the connection between the two groups is stable and it is not easy to shake or deform in the process of blocking the power battery 3.

[0062] Working principle and use process: after the power battery 3 is produced in the assembly process, the power battery 3 is placed on the surface of the plate chain 30 for feeding, the first motor 31 is started to drive the plate chain 30 to operate, so that the plate chain 30 conveys the power battery 3 to one side of the baffle 17, and then the feeding cylinder 18 is extended to push the feeding battery push plate 19 to move, so as to push the power battery 3 away from the plate chain 30, so that the power battery 3 moves to the top of the roller 15, and the second motor 44 is started to drive the gear set 16 to rotate and drive the multiple groups of rollers 15 to operate, so as to convey the power battery 3 to the inside of the battery charging storage rack 14, and the acid circulation is connected to the acid circulation main pipe 2 and the acid circulation return pipe 2. The loop of the acid main pipe 4 is connected in series with the power battery 3, and the air tightness is checked. At the same time, the power battery 3 is connected to the charger. By turning on the negative pressure fan, the acid mist collector 1 can suck the generated acid mist into the interior and introduce it into the interior of the acid mist purifier. The valve is opened to connect the circulating acid tank 10 with the acid circulation acid inlet main pipe 2 and the low-density acid storage tank 5 with the circulating acid tank 10. The circulation pump is started to extract the acid liquid inside the low-density acid storage tank 5 and inject it into the pipeline. The discontinuous acid exchange process, the continuous acid exchange process, and the discontinuous acid addition process are circulated. In the first 4 hours of the acid circulation, the acid liquid circulation is carried out for 10 minutes every 20 minutes, which not only ensures the acid amount in the initial stage of formation, but also saves electric energy.After 4 hours, the charger is turned on, and the formation charging is carried out with the corresponding charging process. At the same time, the acid circulation is continuously operated to ensure the supply of acid in the formation process. During the formation charging process, when the acid solution temperature detected by the acid tank temperature sensor 8 in the circulating acid tank 10 is higher than the set value of 50°C, the cooling water is automatically passed through the pipeline into the water cooling lead pipe 11 coiled in the circulating acid tank 10, and the outer wall of the water cooling lead pipe 11 is used to exchange heat with the acid solution in the circulating acid tank 10, and water cooling is carried out; when the acid solution temperature detected by the acid tank temperature sensor 8 in the circulating acid tank 10 is lower than the set value of 40°C, the valve is automatically closed to end the water cooling, so that the entire charging process is between the set temperature of 40°C-50°C, when the acid solution density detected by the acid tank online density meter 7 in the circulating acid tank 10 is higher than the set value of 1.10g / ml, the valve is automatically opened to inject pure water into the inside of the circulating acid tank 10; when the acid solution density detected by the acid tank online density meter 7 in the circulating acid tank 10 is lower than the set value of 1.05g / ml, the valve is automatically closed to end the charging. Water, so that the whole charging process is between the set density 1.05g / ml-1.10g / ml, when the liquid level detected by the first liquid level sensor 6 in the circulating acid tank 10 is higher than the set value 550mm, part of the acid solution is introduced into the inside of the low-density acid storage tank 5; when the liquid level detected by the first liquid level sensor 6 in the circulating acid tank 10 is lower than the set value 200mm, the acid solution inside the low-density acid storage tank 5 is supplemented to the inside of the circulating acid tank 10 by starting the acid pump, so that the whole charging process is between the set height 200mm-550mm, the battery charging is completed, the acid solution density in the battery meets the requirements, the acid is stopped, the acid circulation acid inlet main pipe 2 and the acid circulation acid return main pipe 4 connected to the battery are removed, and the unloading cylinder 42 is extended to push the unloading battery push plate 43 to move, so that the unloading battery push plate 43 pushes the power storage battery 3 to leave the inside of the battery charging storage rack 14 and the power storage battery 3 is transported by another group of conveying rollers and conveyors, and enters the cleaning and packaging process;.

[0063] When it is necessary to transport the power storage battery 3 to a single station of the battery charging and storage rack 14, the third motor 35 is started to drive the screw rod 36 to operate, so that the first movable seat 38 moves back and forth on the surface of the screw rod 36 through the meshing of the thread on the surface of the screw rod 36, and drives the fixed shell 45 to move and adjust the position of the conveying roller, so that the conveying roller can transport the power storage battery 3 to other stations of the battery charging and storage rack 14. At the same time, the fixed shell 45 drives the second movable seat 39 to move through the baffle 17, so that the second movable seat 39 moves the position of the loading cylinder 18, so that the loading cylinder 18 and the loading battery push plate 19 are aligned with the conveying roller, so as to push the power storage battery 3 to the inside of the conveying roller, and the first movable seat 38 slides on the surface of the slide rail 37 to guide the movement of the first movable seat 38, so that the first movable seat 38 is not easy to drive the fixed shell 45 to shake, and the second movable seat 39 slides on the surface of the first fixed rack 33, so that the first movable seat 38 and the second movable seat 39 move parallel to each other;

[0064] When the loading cylinder 18 pushes the power battery 3 to load, in order to prevent the loading cylinder 18 from pushing multiple groups of power batteries 3 at the same time, the driving motor 25 is started to rotate, so that the driving motor 25 passes through the differential 26 to drive the transmission gear 27 to rotate, and then the transmission gear 27 pushes the driven gear 29 to rotate through the teeth, and at the same time the driven gear 29 drives the flip frame 21 to flip downward, so that the flip frame 21 drives the lower cross bar 23 to be placed horizontally on the top of the plate chain 30, blocking the power batteries 3 transported by the plate chain 30, so that the loading cylinder 18 can only push one group of power batteries 3 at the same time, and the power batteries 3 are released by the reverse rotation of the driving motor 25, and the weight of the isolation structure 20 is balanced by the counterweight block 28, so that the isolation structure 20 can move smoothly under the action of gravity.

[0065] like Figure 1 - Figure 8 As shown, the working principle of this application is as follows:

[0066] Battery in place: The assembled power battery 3 to be charged is placed on the battery charging storage rack 14 through the battery automatic conveying system;

[0067] Loop connection: connect the loop to the power battery 3, and connect the power battery 3 to the charger;

[0068] Connect the acid circulation system: connect the acid circulation inlet pipe 2 and the acid circulation return pipe 4 to the power battery 3 in the loop, and check the air tightness;

[0069] Initial state: Turn on the negative pressure fan to suck the generated acid mist into the interior and guide it into the interior of the acid mist purifier;

[0070] Acid circulation process: Acid adding process: open the valve, start the circulation pump to extract the acid solution inside the low-density acid storage tank 5 and inject it into the pipeline, and perform the cycle of discontinuous acid exchange process-continuous acid exchange process-discontinuous acid adding process;

[0071] When the discontinuous acid replacement process is completed, the charger is turned on for charging;

[0072] In the formation charging process, when the acid solution temperature detected by the acid tank temperature sensor 8 in the circulating acid tank 10 is higher than the set value, the valve is automatically opened to allow cooling water to enter the water cooling lead pipe 11 coiled in the circulating acid tank 10 through the pipeline, and the acid solution in the circulating acid tank 10 is exchanged with heat by the outer wall of the water cooling lead pipe 11, and water cooling is performed; When the acid solution temperature detected by the acid tank temperature sensor 8 in the circulating acid tank 10 is lower than the set value, the valve is automatically closed to terminate the water cooling, and the whole process, according to the temperature detected by the acid tank temperature sensor 8 in the circulating acid tank 10, is transmitted to the PLC controller, and the cooling water flow rate is automatically adjusted by adjusting the opening of the solenoid valve installed on the cooling water inlet pipe, to ensure that the acid solution temperature is between the set temperatures;

[0073] During the formation charging process, when the acid density detected by the acid tank online density meter 7 in the circulating acid tank 10 is higher than the set value, the valve is automatically opened to inject pure water into the inside of the circulating acid tank 10; when the acid density detected by the acid tank online density meter 7 in the circulating acid tank 10 is lower than the set value, the valve is automatically closed to end the water addition. During the whole process, the density detected by the online density meter in the circulating tank is transmitted to the PLC controller, and the water addition valve is automatically opened and closed to ensure that the acid density is between the set densities;

[0074] In the formation charging process, when the liquid level detected by the first liquid level sensor 6 in the circulating acid tank 10 is higher than the set value, part of the acid solution is imported into the inside of the low-density acid storage tank 5; When the liquid level detected by the first liquid level sensor 6 in the circulating acid tank 10 is lower than the set value, the acid solution inside the low-density acid storage tank 5 is supplemented to the inside of the circulating acid tank 10 by starting the acid pump, and the whole process, according to the liquid level detected by the liquid level sensor in the circulating tank, is transmitted to the PLC controller, and the automatic opening and closing valve and the acid pump guarantee that the acid solution height is between the set height;

[0075] End of charging: When the charging of the power battery 3 is completed, the density of the acid liquid in the power battery 3 meets the requirements, stop changing the acid and adding acid discontinuously, close the valve and the acid circulation frequency conversion pump, turn off the negative pressure fan, remove the acid circulation acid inlet main pipe 2 and the acid circulation acid return main pipe 4 loop pipes connected to the power battery 3, and unload the power battery 3 through the battery automatic conveying system.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic acid circulation system for tubular flooded power batteries, comprising an automatic battery conveying system and a battery acid circulation charging system, characterized in that: The battery acid circulation charging system comprises an acid mist collector (1), an acid circulation acid inlet main pipe (2), a power storage battery (3), an acid circulation acid return main pipe (4), a low-density acid storage tank (5), a circulation acid tank (10), a high-density acid storage tank (13) and a cooling system which are interconnected. The acid mist collector (1) has an input end connected to the output end of the acid circulation back acid main pipe (4), and an output end connected to the input end of the acid mist purifier; The acid circulation acid inlet main pipe (2) has an input end connected to the output end of the circulating acid tank (10), and an output end connected to the input ends of the power storage battery (3), the acid circulation acid return main pipe (4), the low-density acid storage tank (5) and the high-density acid storage tank (13); The power storage battery (3) has an input end connected to the output end of the acid circulation acid inlet main pipe (2), and an output end connected to the input end of the acid circulation acid return main pipe (4); A circulating acid tank (10), the input end of which is respectively connected to the output end of the high-density acid storage tank (13) and the output end of the low-density acid storage tank (5), and the output end of which is respectively connected to the input end of the acid circulation acid inlet main pipe (2) and the input end of the acid circulation acid return main pipe (4); The high-density acid storage tank (13) has an input end connected to the output end of the circulating acid tank (10) through a circulating pipeline, and an output end connected to the input end of the circulating acid tank (10).

2. The automatic acid circulation system for tubular flooded power batteries according to claim 1, characterized in that: A first liquid level sensor (6) for detecting the liquid level inside the low-density acid storage tank (5) is installed inside the low-density acid storage tank (5); an acid tank online density meter (7), an acid tank temperature sensor (8) and a second liquid level sensor (9) are installed inside the circulating acid tank (10); a third liquid level sensor (12) is installed inside the high-density acid storage tank (13); a liquid injection port connected to an acid circulation acid inlet main pipe (2) and an acid circulation acid return main pipe (4) is installed at the top of the power storage battery (3); and a negative pressure fan is connected between the acid mist collector (1) and the acid mist purifier.

3. The automatic acid circulation system for tubular flooded power batteries according to claim 1, characterized in that: The cooling system comprises a water cooling lead pipe (11), a cooling tower and a cooling water pool. The water cooling lead pipe (11) is coiled inside the circulating acid tank (10). The input end of the water cooling lead pipe (11) is connected to the output end of the cooling water pool, the output end is connected to the input end of the cooling tower, and the output end of the cooling tower is connected to the input end of the cooling water pool.

4. The tubular flooded power battery automatic acid circulation system according to claim 1, characterized in that: The battery automatic conveying system comprises a battery charging and storage rack (14), a conveying roller, a conveyor, a baffle (17), a loading cylinder (18), a loading battery push plate (19), an isolation structure (20), a moving structure (32), a unloading cylinder (42) and a unloading battery push plate (43), wherein the moving structure (32) is installed on both sides of the conveyor, and a conveying roller is arranged at the top of the moving structure (32) close to the battery charging and storage rack (14), and a baffle (17) is installed on one side of the top of the conveying roller, away from the battery charging and storage rack (14). A loading cylinder (18) is arranged at the top of the movable structure (32) on one side of the battery storage rack (14), a loading battery push plate (19) is installed at the telescopic end of the loading cylinder (18), an isolation structure (20) is arranged at the top of the side of the loading cylinder (18) away from the baffle (17), a battery charging storage rack (14) is arranged on one side of the conveying roller, a unloading cylinder (42) is installed on one side inside the battery charging storage rack (14), and a unloading battery push plate (43) is installed at the telescopic end of the unloading cylinder (42).

5. The automatic acid circulation system for tubular flooded power batteries according to claim 4, characterized in that: The conveying roller comprises a fixed shell (45) installed on one side of the top end of a moving structure (32), a roller (15) rotatably connected inside the fixed shell (45), a gear set (16) installed inside one side of the fixed shell (45) and connected to the rotating end of the roller (15), and a second motor (44) installed on the other side of the fixed shell (45) and connected to the rotating end of the roller (15). The conveyor comprises a support frame (41) installed on one side of the moving structure (32), a first motor (31) installed on one side of the support frame (41), and a plate chain (30) installed inside the support frame (41).

6. The tubular flooded power battery automatic acid circulation system according to claim 5, characterized in that: The movable structure (32) comprises a second fixed frame (40) installed on one side of the support frame (41), a slide rail (37) fixed on the top of the second fixed frame (40), a screw rod (36) fixed on both sides of the top of the second fixed frame (40), a third motor (35) installed on one side of the second fixed frame (40) and the rotating end of which is connected to the screw rod (36), a first movable seat (38) threadedly connected to the outside of the screw rod (36) and connected to the fixed shell (45), and a loading assembly arranged on the other side of the support frame (41), wherein the loading assembly comprises a first fixed frame (33) installed on the other side of the support frame (41), a slide rod (34) fixed on both sides of the top of the first fixed frame (33), and a second movable seat (39) sliding on the outside of the slide rod (34) and connected to the baffle (17).

7. The tubular flooded power battery automatic acid circulation system according to claim 6, characterized in that: A sliding structure is provided between the slide rail (37) and the first movable seat (38), and the loading cylinder (18) is installed on the top of the second movable seat (39).

8. The tubular flooded power battery automatic acid circulation system according to claim 5, characterized in that: The isolation structure (20) comprises a support plate (24) mounted on one side of the top end of the second movable seat (39), a transmission gear (27) rotatably connected to one side of the support plate (24), a differential (26) mounted on one side of the support plate (24) and having a rotation end connected to the transmission gear (27), a drive motor (25) mounted at the bottom end of the differential (26), a driven gear (29) mounted on the top end of one side of the support plate (24) and meshing with the transmission gear (27), a flip frame (21) rotatably connected to the top end of the other side of the support plate (24) and penetrating the support plate (24) and connected to the driven gear (29), a counterweight (28) mounted at one end of the flip frame (21), a connecting rod (22) rotatably connected to the inside of the bottom end of the flip frame (21), and a lower horizontal bar (23) rotatably connected to the bottom end of the connecting rod (22).

9. The tubular flooded power battery automatic acid circulation system according to claim 8, characterized in that: The connecting rods (22) are provided in a plurality of groups, and the plurality of connecting rods (22) are distributed at equal intervals between the lower crossbar (23) and the turning frame (21), and the width of the lower crossbar (23) is equal to the width of the plate chain (30).

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