An acid extraction device and method for lead-acid batteries.

Abstract

This invention discloses an acid extraction device and method for lead-acid batteries, belonging to the field of lead-acid battery acid extraction technology. The device includes an overflow funnel for collecting acid. Multiple sets of interfaces are provided on one side of the overflow funnel, each set corresponding to a valve port of the lead-acid battery. Each set of interfaces is equipped with a connecting sleeve, which connects to the corresponding valve port. When the lead-acid battery is horizontally charged and overflows with acid, the acid overflowing from the valve port is guided into the overflow funnel. A guide pipe is connected to the bottom of the overflow funnel. By adjusting the battery to a horizontal position, excess free acid automatically flows out through the overflow funnel under gravity, eliminating the need for a vacuum acid extraction machine. This method offers high production efficiency, low labor costs, no acid mist overflow during charging, no environmental pollution, and eliminates the uncontrollable factors of manual acid extraction. The extraction effect is stable and reliable, and battery performance will not degrade due to acid leakage.

Description

Technical Field

[0001] This invention relates to the field of lead-acid battery acid extraction, and particularly to an acid extraction device and method for lead-acid batteries. Background Technology

[0002] Lead-acid batteries use lead and lead oxide as electrodes and dilute sulfuric acid as the electrolyte. The production of lead-acid batteries requires an acid extraction process. After formation (charging activation), a vacuum pump is used to extract excess dilute sulfuric acid electrolyte from inside the battery. The purpose is to remove excess acid, control the amount of acid added, and ensure the battery reaches the specified acid quantity and density, facilitating subsequent valve capping, sealing, and performance testing.

[0003] The specific process for vertical battery acid extraction is as follows: 1. First, place the batteries vertically in series and install the acid extraction funnel; 2. Then, recharge the battery using a constant current and voltage limiting method. The current is 0.15~0.25CA, the voltage is limited to 2.45V / cell, the charging time is 2~4 hours, and the final current is about 0.015CA. The recharging is then complete.

[0004] 3. Next, perform constant current charging and acid removal on the battery. The charging current is approximately 0.02CA~0.05CA, and the charging time is approximately 2~6 hours before acid removal. During acid removal, follow the battery series connection sequence and use a vacuum acid removal machine to remove the free acid from the surface of each cell. To avoid missing acid from some cells, after the acid removal of the entire circuit is completed, remove acid from all cells in the circuit again.

[0005] 4. After acid extraction is completed, the battery charging ends. After standing for a period of time, the battery flows to the next process for processing.

[0006] During acid extraction, the acid extraction funnel needs to be inserted vertically into the battery valve. The funnel is an acid-resistant, transparent plastic tube with a hemispherical end cap to prevent clogging. One or two coaxial acid suction side holes are cut into the tube wall; the height of these holes determines the amount of remaining acid after extraction. Acid extraction automatically stops when the liquid level drops below the side holes, ensuring consistent remaining acid levels in each cell. Acid overflows from the valve into the funnel. Multiple funnels, connected by a vacuum pump, create negative pressure that draws the acid into the storage tank through the pipeline. Figure 1 As shown.

[0007] The shortcomings of the existing technical solutions described above are as follows: The vertical charging and acid extraction process described is currently the method used by almost all lead-acid battery manufacturers. This process has low production efficiency, and the reliability of acid extraction depends heavily on the operator's responsibility. Furthermore, if the number of batteries requiring acid extraction daily is very large, it is inevitable that some batteries will be missed or under-extracted from the extraction process. This will inevitably lead to decreased battery performance, shorter battery life, and increased complaint rates. During the extraction process, the acid comes into contact with air, easily generating acid mist and polluting the working environment. Summary of the Invention

[0008] This invention provides an acid extraction device and method for lead-acid batteries, which can solve the problems of low production efficiency in the vertical charging acid extraction process and the reliability of battery acid extraction depending on the operator's personal condition in the prior art.

[0009] An acid extraction device for a lead-acid battery includes an overflow funnel for collecting acid. Multiple sets of interfaces are provided on one side of the overflow funnel, each set corresponding to a valve port of the lead-acid battery. Each set of interfaces is equipped with a connecting sleeve, which is used to connect with the corresponding valve port. When the lead-acid battery is horizontally charged and overflows acid, the acid overflowing from the valve port is guided into the overflow funnel. A guide pipe is connected to the bottom of the overflow funnel for exporting the acid from inside the funnel.

[0010] A method for removing acid from a lead-acid battery as described in claim 1, comprising the following steps: S1: First connect the batteries in series, then install the interface of the overflow funnel on the valve port of the lead-acid battery through multiple sets of connecting sleeves, and lay the lead-acid battery horizontally. S2: Charge the lead-acid battery; S3: Constant current charging of lead-acid batteries to overflow acid; excess free acid inside the battery automatically flows out through the overflow funnel. S4: After the charging acid overflow step is completed, let the lead-acid battery stand until it meets the requirements.

[0011] As a further aspect of the present invention, it also includes a transfer vehicle and a transfer mechanism. The transfer vehicle is equipped with a collection tank for storing acid. The collection tank is connected to multiple sets of guide pipes, and each set of guide pipes is connected to an overflow funnel at its end. The multiple sets of overflow funnels discharge the collected acid into the collection tank through the guide pipes. The transfer vehicle is equipped with a tilting frame for adjusting the vertically placed lead-acid batteries to a horizontal position. The transfer mechanism is used to push the lead-acid batteries on the roller conveyor onto the tilting frame.

[0012] As a further aspect of the present invention: the tilting frame includes a support guard plate fixedly connected to a transfer vehicle, a support shaft is rotatably mounted on the support guard plate, and an L-shaped tilting plate is fixedly mounted on the support shaft for placing lead-acid batteries. Multiple sets of rollers are rotatably mounted on the bearing surface of the L-shaped tilting plate to reduce the moving resistance of the lead-acid batteries. A drive assembly is provided on one side of the support guard plate for adjusting the rotation angle of the L-shaped tilting plate. A support plate is fixedly mounted on the support guard plate for limiting the tilting angle of the L-shaped tilting plate.

[0013] As a further embodiment of the present invention: the driving assembly includes a driving gear and a drive gear rotatably disposed within the support guard plate. The tooth diameter of the drive gear is smaller than that of the driving gear. The driving gear and the drive gear engage in transmission. The driving gear is coaxially and fixedly connected to the support shaft. A rotating handle is coaxially and fixedly disposed on one side of the drive gear.

[0014] As a further embodiment of the present invention: a speed limiting gear is coaxially fixedly mounted on the drive gear, and a damping telescopic component is fixedly mounted inside the support guard plate, with a transmission tooth that cooperates with the speed limiting gear at the telescopic end of the damping telescopic component.

[0015] As a further aspect of the present invention: a limiting groove adapted to the shape of the transfer vehicle is provided on one side of the roller conveyor.

[0016] As a further aspect of the present invention: the transfer mechanism includes a push-pull device, the output end of which is fixedly provided with a hook plate, and one side of the L-shaped flip plate is provided with an opening adapted to the shape of the hook plate. The push-pull device can drive the hook plate to push the lead-acid battery onto the L-shaped flip plate, or pull the lead-acid battery on the L-shaped flip plate onto the roller conveyor.

[0017] As a further aspect of the present invention, the connecting sleeve is made of rubber.

[0018] A method for removing acid from a lead-acid battery as described in claim , comprising the following steps: S1: The transfer vehicle is sent into the limiting groove, and the transfer mechanism pushes the lead-acid battery on the roller conveyor onto the tipping frame. S2: The lead-acid batteries are transported to the charging overflow area by a transfer vehicle. An overflow funnel is installed on each group of lead-acid batteries, and the lead-acid batteries are laid horizontally by a flipping frame. S3: Constant current charging of lead-acid batteries to remove excess acid; S4: After the charging acid overflow step is completed, let the lead-acid battery stand until it meets the requirements. S5: The transfer vehicle is moved into the limiting slot, and the transfer mechanism drags the lead-acid batteries on the tipping frame onto the roller conveyor.

[0019] The beneficial effects of this invention are: 1. In this invention, the connecting sleeve is tightly fitted onto the valve port of the lead-acid battery, utilizing the elasticity of rubber to ensure a seal. Overflowing acid is guided into an overflow funnel and then discharged into a collection container via a guide pipe. This embodiment adjusts the battery to a horizontal position, allowing excess free acid to automatically flow out through the overflow funnel under gravity, eliminating the need for a vacuum acid extraction machine. It boasts high production efficiency, low labor costs, no acid mist overflow during charging, no environmental pollution, and eliminates the uncontrollable factors of manual acid extraction. The acid extraction effect is stable and reliable, preventing battery performance degradation due to leakage and reducing customer complaint rates.

[0020] 2. In this invention, the flipping frame achieves synchronous 90° flipping of multiple battery groups through the meshing transmission of the support shaft, L-shaped flipping plate, drive gear, and active gear, resulting in high operational efficiency. A speed-limiting gear, in conjunction with a damping telescopic component, limits the flipping speed to ensure safety. The transfer mechanism achieves automatic battery loading and return through a push-pull device and hook plate. The overall operation is highly automated and integrated; operators only need to guide the transfer cart into the limiting slot to complete positioning and automatic loading, reducing labor intensity and improving operational efficiency. Simultaneously, the speed-limiting structure avoids the safety hazard of uncontrolled flipping. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an existing acid extraction method; Figure 2 The present invention provides an acid extraction device for a lead-acid battery, which is designed for horizontal constant current charging and acid overflow. Figure 3 A schematic diagram of the connecting sleeve structure of an acid extraction device for a lead-acid battery provided by the present invention; Figure 4 A schematic diagram of the transfer mechanism of an acid extraction device for a lead-acid battery provided by the present invention; Figure 5 A schematic diagram of the flipping frame structure of an acid extraction device for a lead-acid battery provided by the present invention; Figure 6 A schematic diagram of a constant current charging overflow structure for an acid extraction device of a lead-acid battery provided by the present invention. Figure 7 This is a schematic diagram of the drive assembly structure of an acid extraction device for a lead-acid battery provided by the present invention.

[0022] Explanation of reference numerals in the attached figures: 1. Lead-acid battery; 101. Valve port; 2. Overflow funnel; 201. Interface; 3. Connecting sleeve; 4. Guide pipe; 5. Collection box; 6. Transfer cart; 7. Tilting frame; 701. Support guard plate; 702. Support shaft; 703. L-shaped tilting plate; 704. Roller; 705. Drive assembly; 7051. Drive gear; 7052. Drive gear; 7053. Rotary handle; 7054. Speed ​​limiting gear; 7055. Damping telescopic component; 7056. Transmission gear; 706. Support plate; 8. Roller conveyor; 9. Limiting groove; 10. Transfer mechanism; 1001. Push-pull device; 1002. Hook plate. Detailed Implementation

[0023] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0024] During the vertical battery acid extraction process, the acid extraction funnel must be tightly inserted vertically into the battery valve port 101. Acid overflowing from the battery due to expansion will flow out of valve port 101 and into the acid extraction funnel. Multiple acid extraction funnels, connected by a vacuum acid extraction machine, generate negative pressure through a pipeline system, drawing the acid into an acid storage tank. The connection diagram is shown below. Figure 1 As shown, this vertical charging and acid extraction process is a common method used by almost all lead-acid battery manufacturers. However, this process has relatively low production efficiency, and the reliability of battery acid extraction largely depends on the operator's sense of responsibility and work condition. Especially when operators need to process a large number of batteries daily, limitations in human energy and fatigue inevitably lead to some batteries having insufficient or missed acid extraction. This incomplete acid extraction due to human factors will inevitably cause a decline in battery performance, directly shortening battery life and increasing customer complaint rates.

[0025] First embodiment: like Figures 2 to 7 As shown in the figure, an acid extraction device for a lead-acid battery provided in this embodiment of the invention includes an overflow funnel 2 for collecting acid. Multiple sets of interfaces 201 communicating with the interior are provided on one side of the overflow funnel 2. Each set of interfaces 201 corresponds to a valve port 101 of the lead-acid battery 1. To ensure a tight seal, each set of interfaces 201 is provided with a connecting sleeve 3 made of rubber, thereby ensuring a good sealing effect at the connection point. Each set of connecting sleeves 3 is used to tightly connect with the corresponding valve port 101. When the lead-acid battery 1 is horizontally charged and overflows acid, the acid overflowing from the valve port 101 can be guided into the overflow funnel 2. Its structure is as follows: Figure 2 , Figure 3As shown. In addition, the bottom of the overflow funnel 2 is connected to a guide tube 4, which is specifically used to export the acid collected inside the overflow funnel 2 to the collection container.

[0026] In this embodiment, when in use, the operator first connects multiple sets of lead-acid batteries 1 in series, and then installs each port 201 of the overflow funnel 2 onto the valve port 101 of the lead-acid battery 1 through multiple sets of connecting sleeves 3, and adjusts all lead-acid batteries 1 to a horizontal position.

[0027] Next, lead-acid battery 1 is charged using the same constant current and voltage limiting method. The charging current is set to 0.15~0.25CA, the voltage limit is 2.45V / cell, and the charging time is 2~4 hours until the final current is about 0.015CA.

[0028] Next, a constant current charging process is performed on lead-acid battery 1 to allow excess free acid to overflow. During this process, excess free acid inside the battery will automatically flow out through the overflow funnel 2. The charging current during this stage is approximately 0.01CA~0.03CA, and the charging time is approximately 1~3 hours. During this charging period, excess free acid generated inside the battery will automatically flow out through the overflow funnel 2 due to gravity, eliminating the need for personnel to manually remove acid from each battery individually using a vacuum pump.

[0029] After the charging acid overflow step is completed, the battery is left to stand for 1 to 2 hours before being transferred to the next process for further treatment.

[0030] The aforementioned horizontal charging acid overflow process has significant advantages: it requires a smaller charging current and a shorter charging time, and completely eliminates the need for a vacuum acid extraction machine. During charging, excess free acid inside the battery automatically overflows from the acid overflow funnel 2 due to gravity. This process prevents acid mist from escaping during battery processing, thus avoiding environmental pollution. Furthermore, this process boasts extremely high production efficiency, low labor costs, stable acid extraction results, and reliable battery performance. It eliminates uncontrollable factors caused by human operation and prevents quality issues such as performance degradation in individual cells due to acid leakage.

[0031] Second embodiment: However, in the first embodiment, the lead-acid battery 1 needs to be manually transported to the corresponding charging area before it overflows with acid during charging. At the same time, the lead-acid batteries 1 need to be manually laid down one by one, which makes the labor intensity of the staff quite high.

[0032] To address the aforementioned problem of high labor intensity, this invention proposes a second embodiment. In this embodiment, the device further includes a transfer vehicle 6 and a transfer mechanism 10. The transfer vehicle 6 is equipped with a collection tank 5 for storing acid, and multiple sets of guide pipes 4 are connected to the collection tank 5. Each set of guide pipes 4 has an overflow funnel 2 connected to its end. Thus, the multiple overflow funnels 2 can discharge the collected acid into the collection tank 5 through the guide pipes 4, allowing the collection tank 5 to periodically drain acid. The transfer vehicle 6 is also equipped with a tilting frame 7 for adjusting the vertically placed lead-acid battery 1 to a horizontal position. The transfer mechanism 10 automatically pushes the lead-acid battery 1 from the roller conveyor 8 onto the tilting frame 7. The roller conveyor 8 can transport the lead-acid battery 1, and the lead-acid battery 1 is output at equal intervals on the roller conveyor 8. A limiting groove 9, adapted to the shape of the transfer vehicle 6, is provided on one side of the roller conveyor 8 for positioning the transfer vehicle 6.

[0033] In this embodiment, the operator first pushes the transfer cart 6 into the limiting groove 9, which positions the transfer cart 6. Then, the transfer mechanism 10 activates, pushing the lead-acid batteries 1 from the roller conveyor 8 onto the tilting frame 7. The operator then transports the lead-acid batteries 1 to the charging overflow area using the transfer cart 6. Overflow funnels 2 are installed on each group of lead-acid batteries 1, and the tilting frame 7 ensures the lead-acid batteries 1 are in a horizontal position.

[0034] Subsequently, the lead-acid battery 1 was subjected to constant current charging to allow acid overflow, and the specific operation was the same as in the first embodiment, so it will not be repeated here. After the charging and acid overflow step was completed, the lead-acid battery 1 was left to stand for about 1 to 2 hours.

[0035] Finally, the transfer vehicle 6 is sent back to the limiting groove 9, and the transfer mechanism 10 pulls the lead-acid battery 1 on the flipping frame 7 back to the roller conveyor device 8. The roller conveyor device 8 can be another set of roller conveyors 8 specifically used for palletizing and packaging lead-acid batteries 1, thus completing the transfer.

[0036] In this embodiment, the operator only needs to place the transfer vehicle 6 into the limiting slot 9 to achieve positioning, such as... Figure 4 As shown, the lead-acid battery 1 is automatically fed through the transfer mechanism 10. Then, the operator transports the lead-acid battery 1 to the appropriate area and adjusts the tilting frame 7 so that multiple sets of lead-acid batteries 1 lie on their sides together, facilitating subsequent constant current charging and acid overflow operations. The entire process is highly automated and integrated, greatly reducing labor intensity and improving operational efficiency.

[0037] In one optional embodiment, the tilting frame 7 includes a support plate 701 fixedly connected to the transfer vehicle 6, and a support shaft 702 is rotatably mounted on the support plate 701. An L-shaped tilting plate 703 is fixedly mounted on the support shaft 702, specifically for placing the lead-acid battery 1, such as... Figure 4 , Figure 5 As shown. To reduce friction, multiple sets of rollers 704 are rotatably arranged on the bearing surface of the L-shaped flip plate 703 to reduce the resistance when the lead-acid battery 1 moves. A drive assembly 705 is provided on one side of the support plate 701 to adjust the rotation angle of the L-shaped flip plate 703. A support plate 706 is also fixedly provided on the support plate 701 to physically limit the flip angle of the L-shaped flip plate 703, so that the L-shaped flip plate 703 can only rotate 90°, that is, flip from the vertical position to the horizontal lying position.

[0038] The drive assembly 705 includes a drive gear 7051 and a drive gear 7052 rotatably disposed within the support plate 701. The drive gear 7051 and drive gear 7052 are meshed together, with the tooth diameter of the drive gear 7052 being smaller than that of the drive gear 7051, allowing the operator to precisely control the rotational speed of the drive gear 7051. The drive gear 7051 is coaxially and fixedly connected to the support shaft 702, and a rotating handle 7053 is coaxially and fixedly disposed on one side of the drive gear 7052.

[0039] In operation, the operator rotates the handle 7053, which in turn rotates the drive gear 7052. The drive gear 7052 then drives the support shaft 702 via the drive gear 7051, which in turn rotates the support shaft 702. The support shaft 702 ultimately drives all the L-shaped flip plates 703 to rotate synchronously, thus adjusting the angle of the lead-acid battery 1. Because the tooth diameter of the drive gear 7052 is much smaller than that of the drive gear 7051, the operator can very sensitively control the rotational speed of the drive gear 7051 by utilizing the speed reduction and torque amplification principle of gear transmission, improving operational sensitivity and controllability.

[0040] Third specific embodiment: In the second specific embodiment, although the mass of the lead-acid battery 1 is limited, the operator can sensitively control the rotation of the drive gear 7051, thereby controlling the flipping speed of the lead-acid battery 1. However, if the operator accidentally loses control of the rotating handle 7053 during the flipping process, or if the rotating handle 7053 slips and falls out of hand, the lead-acid battery 1 is prone to fall out of control and quickly due to gravity, which poses a safety hazard.

[0041] To address the aforementioned safety issues, in the third specific embodiment, a speed limiting gear 7054 is coaxially fixedly mounted on the drive gear 7051, and a damping telescopic component 7055 is fixedly mounted inside the support guard plate 701. This damping telescopic component 7055 can be a component with resistance characteristics, such as a damping telescopic sleeve. The telescopic end of the damping telescopic component 7055 is provided with a transmission gear 7056 that cooperates with the speed limiting gear 7054.

[0042] In this embodiment, when the drive gear 7051 rotates, it synchronously drives the speed limiting gear 7054 to rotate. The speed limiting gear 7054 drives the output end of the damping telescopic member 7055 to move through the transmission gear 7056. Due to the characteristics of the damping telescopic member 7055, it generates resistance to and limits the movement speed of the output end, thereby preventing the lead-acid battery 1 from moving too fast due to gravity, and ensuring the overall stability and safety of the flipping process.

[0043] In the second and third embodiments described above, the transfer mechanism 10 includes a push-pull device 1001, such as... Figure 4 As shown. A hook plate 1002 is fixedly installed at the output end of the push-pull device 1001, while an opening matching the shape of the hook plate 1002 is provided on one side of the L-shaped flip plate 703. Slightly open guide plates are also provided on both sides of the bearing surface of the L-shaped flip plate 703, such as... Figure 5 As shown, this design ensures that the lead-acid battery 1 can be accurately positioned on the plate. The push-pull device 1001 can drive the hook plate 1002 to push the lead-acid battery 1 onto the L-shaped flip plate 703, or pull the lead-acid battery 1 on the L-shaped flip plate 703 back onto the roller conveyor 8.

[0044] It is particularly important to note that when the lead-acid battery 1 on the L-shaped tilting plate 703 needs to be pulled back onto the roller conveyor 8, the push-pull device 1001 will first move the hook plate 1002 to one side of the limiting groove 9, and then send the transfer cart 6 into the limiting groove 9, so that the lead-acid battery 1 can be transported onto the roller conveyor 8 through the hook plate 1002. When the hook plate 1002 pulls the lead-acid battery 1 back onto the roller conveyor 8, the L-shaped tilting plate 703 should preferably maintain a certain tilt angle so that the lead-acid battery 1 can be directly sent to the top of the roller conveyor 8, avoiding deformation of the tilting frame 7 due to long-term use, which could cause the bottom of the lead-acid battery 1 to be blocked by the rollers of the roller conveyor 8 and unable to be lowered smoothly.

[0045] Working Principle: When constant current charging is required for acid overflow operation, the operator first connects multiple sets of lead-acid batteries 1 in series. Then, the connecting sleeves 3 on each port 201 of the acid overflow funnel 2 are tightly connected to the valve ports 101 of the lead-acid batteries 1. During the connection process, the rubber connecting sleeves 3 ensure a tight seal between the port 201 and the valve port 101, preventing acid leakage at the connection point. After connection is completed, all lead-acid batteries 1 are adjusted to a horizontal position. The horizontally positioned lead-acid batteries 1 are then recharged. This step uses a constant current and voltage-limited charging method, with the charging current set at 0.15~0.25CA and the single-cell voltage limit set at 2.45V. Charging lasts for 2~4 hours. During this period, the active materials inside the battery are activated, and the recharge ends when the final current drops to approximately 0.015CA.

[0046] After the supplementary charging is completed, the constant current charging acid overflow stage begins. At this time, the charging current is adjusted to approximately 0.01CA~0.03CA, and the charging time is approximately 1~3 hours. During this charging period, excess free acid is generated inside the battery due to chemical reactions. This free acid, under the influence of gravity, naturally overflows from the valve port 101 located at the top when the battery is vertical, flows into the overflow funnel 2 through the interface 201, and automatically drains into the collection box 5 along the guide pipe 4. The entire acid overflow process is completed naturally by gravity, without the need for any personnel to use a vacuum acid extraction machine. Simultaneously, because the battery is in a horizontal position and the overflow funnel 2 completely covers the valve port 101, no acid mist overflows during charging, avoiding environmental pollution.

[0047] After all the charging and acid overflow steps are completed, lead-acid battery 1 is left to stand for 1 to 2 hours to allow the internal state of the battery to stabilize before being transferred to the next process for further processing.

[0048] When automated operation is required using the transfer vehicle 6 and the transfer mechanism 10, its working principle is as follows: First, the staff pushes the transfer cart 6 into the limiting groove 9 on one side of the roller conveyor 8, where the limiting groove 9 precisely positions the transfer cart 6. Then, the push-pull device 1001 in the transfer mechanism 10 activates, extending its output hook plate 1002 to push the lead-acid batteries 1, which are equidistantly output from the roller conveyor 8, onto the L-shaped tilting plate 703 bearing surface on the tilting frame 7. The slightly open guide plates on both sides of the L-shaped tilting plate 703 guide and position the lead-acid batteries 1, while multiple sets of rollers 704 on the bearing surface reduce resistance during battery movement.

[0049] After loading, workers transport the lead-acid batteries 1 to the charging overflow area using the transfer vehicle 6. Upon arrival at the designated location, workers install overflow funnels 2 on the valve ports 101 of each group of lead-acid batteries 1. Subsequently, workers rotate the rotating handle 7053 of the drive assembly 705 on the flipping frame 7. The drive gear 7052 drives the drive gear 7051 to rotate, and the drive gear 7051 coaxially drives the support shaft 702 to rotate. The support shaft 702 then drives the L-shaped flipping plate 703 to rotate synchronously. During the flipping process, the speed limiting gear 7054 rotates synchronously with the drive gear 7051, driving the output end of the damping telescopic component 7055 to move through the transmission gear 7056. The damping telescopic component 7055 generates damping resistance on the movement speed of the output end, limiting the flipping speed within a safe range. Under the constraint of the support plate 706, the L-shaped flipping plate 703 rotates 90°, adjusting the lead-acid batteries 1 from a vertical position to a horizontal position.

[0050] After entering the constant current charging acid overflow stage, the operation process is the same as in the first embodiment. Excess free acid is automatically discharged through the acid overflow funnel 2 under the action of gravity, without the need for manual acid extraction.

[0051] After the charging and acid overflow and settling operations are completed, the push-pull device 1001 of the transfer mechanism 10 drives the hook plate 1002 to move to one side of the limiting groove 9. The operator sends the transfer cart 6 into the limiting groove 9 for positioning. The hook plate 1002 hooks the lead-acid battery 1 on the L-shaped flip plate 703 and pulls it back onto the roller conveyor 8. During this pull-back process, the L-shaped flip plate 703 maintains a certain tilt angle, so that the lead-acid battery 1 can be directly sent to the top of the roller conveyor 8. This avoids the lead-acid battery 1 being blocked by the rollers due to insufficient bottom height caused by the deformation of the flip frame 7 after long-term use, thus successfully completing the battery transfer and unloading process.

[0052] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An acid extraction device for a lead-acid battery, characterized in that, Includes an acid overflow funnel (2) for collecting acid, wherein the acid overflow funnel (2) is provided with multiple sets of interfaces (201) on one side, and each set of interfaces (201) corresponds to the corresponding valve port (101) of the lead-acid battery (1); Each of the interfaces (201) is provided with a connecting sleeve (3), and each of the connecting sleeves (3) is used to connect with the corresponding valve port (101). When the lead-acid battery (1) is charged horizontally and overflows with acid, the acid overflowing from the valve port (101) is guided into the overflow funnel (2). The bottom of the overflow funnel (2) is connected to a guide tube (4) for draining the acid inside the overflow funnel (2).

2. A method for removing acid from a lead-acid battery as described in claim 1, characterized in that, Includes the following steps: S1: First connect the batteries in series, install the interface (201) of the overflow funnel (2) on the valve port (101) of the lead-acid battery (1) through multiple sets of connecting sleeves (3), and lay the lead-acid battery (1) horizontally. S2: Charge the lead-acid battery (1); S3: Constant current charging is performed on the lead-acid battery (1) to release excess acid. The excess free acid inside the battery flows out automatically through the overflow funnel (2). S4: After the charging acid overflow step is completed, let the lead-acid battery (1) stand until it meets the requirements.

3. The lead-acid battery acid extraction device as described in claim 1, characterized in that, It also includes a transfer vehicle (6) and a transfer mechanism (10). The transfer vehicle (6) is equipped with a collection box (5) for storing acid. The collection box (5) is connected to multiple sets of guide pipes (4). Each set of guide pipes (4) is connected to an overflow funnel (2) at its end. The multiple sets of overflow funnels (2) discharge the collected acid into the collection box (5) through the guide pipes (4). The transfer vehicle (6) is equipped with a tilting frame (7) for adjusting the vertically placed lead-acid battery (1) to a horizontal position; The transfer mechanism (10) is used to push the lead-acid battery (1) on the roller conveyor (8) onto the flipping frame (7).

4. The lead-acid battery acid extraction device as described in claim 3, characterized in that, The flipping frame (7) includes a support guard plate (701) fixedly connected to the transfer vehicle (6). A support shaft (702) is rotatably mounted on the support guard plate (701). An L-shaped flipping plate (703) is fixedly mounted on the support shaft (702) for placing the lead-acid battery (1). Multiple sets of rollers (704) are rotatably mounted on the bearing surface of the L-shaped flipping plate (703) to reduce the moving resistance of the lead-acid battery (1). A drive assembly (705) is provided on one side of the support plate (701) for adjusting the rotation angle of the L-shaped flip plate (703); A support plate (706) is fixedly provided on the support guard plate (701) to limit the flipping angle of the L-shaped flip plate (703).

5. The lead-acid battery acid extraction device as described in claim 4, characterized in that, The drive assembly (705) includes a drive gear (7051) and a drive gear (7052) rotatably disposed within the support guard plate (701). The tooth diameter of the drive gear (7052) is smaller than that of the drive gear (7051). The drive gear (7051) and the drive gear (7052) are engaged in transmission. The drive gear (7051) is coaxially and fixedly connected to the support shaft (702). A rotating handle (7053) is coaxially and fixedly disposed on one side of the drive gear (7052).

6. The lead-acid battery acid extraction device as described in claim 5, characterized in that, A speed limiting gear (7054) is coaxially fixed on the drive gear (7051), and a damping telescopic component (7055) is fixedly installed inside the support guard plate (701). The telescopic end of the damping telescopic component (7055) is provided with a transmission tooth (7056) that cooperates with the speed limiting gear (7054).

7. An acid extraction device for a lead-acid battery as described in claim 3, 4, 5, or 6, characterized in that, The roller conveyor (8) is provided with a limiting groove (9) on one side that is adapted to the shape of the transfer vehicle (6).

8. The lead-acid battery acid extraction device as described in claim 7, characterized in that, The transfer mechanism (10) includes a push-pull device (1001), and a hook plate (1002) is fixedly provided at the output end of the push-pull device (1001). An opening adapted to the shape of the hook plate (1002) is provided on one side of the L-shaped flip plate (703). The push-pull device (1001) can drive the hook plate (1002) to push the lead-acid battery (1) onto the L-shaped flip plate (703), or pull the lead-acid battery (1) on the L-shaped flip plate (703) onto the roller conveyor (8).

9. The lead-acid battery acid extraction device as described in claim 1, characterized in that, The connecting sleeve (3) is made of rubber.

10. A method for removing acid from the lead-acid battery (1) as described in claim 8, characterized in that, Includes the following steps: S1: The transfer vehicle (6) is sent into the limiting groove (9), and the transfer mechanism (10) pushes the lead-acid battery (1) on the roller conveyor (8) onto the flipping frame (7); S2: The lead-acid batteries (1) are transported to the charging overflow area by the transfer vehicle (6). An overflow funnel (2) is installed on each group of lead-acid batteries (1). The lead-acid batteries (1) are laid horizontally by the flipping frame (7). S3: Constant current charging of lead-acid battery (1) to remove excess acid; S4: After the charging acid overflow step is completed, let the lead-acid battery (1) stand until it meets the requirements; S5: Send the transfer vehicle (6) into the limiting groove (9), and the transfer mechanism (10) drags the lead-acid battery (1) on the flipping frame (7) onto the roller conveyor (8).

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