Lead-acid battery electrolyte filling device

Abstract

The application discloses a lead-acid storage battery electrolyte filling device and belongs to the field of battery liquid injection. The lead-acid storage battery electrolyte filling device comprises a liftable mounting seat, a plurality of quantitative filling assemblies are arranged above the mounting seat, a first conveying line capable of moving horizontally is arranged at the top of the mounting seat, positioning assemblies are symmetrically arranged on the first conveying line, the quantitative filling assembly comprises a filling head, a liquid outlet pipe fixedly arranged at the top of the filling head and a liquid level meter fixedly arranged at the top of the filling head and located at one side of the liquid outlet pipe, the bottom of the filling head can form sealed contact with a liquid injection port, the bottom end of the liquid outlet pipe extends out of the bottom end of the filling head, and the detection end of the liquid level meter faces the inside of the liquid injection port; the filling head is connected with a vacuum generating assembly, and the quantitative filling assembly is connected with a gas blowing assembly. The gas blowing assembly is arranged to prevent electrolyte from dropping; the liquid level meter is adopted to detect the filling liquid level height, precise quantitative filling is realized, the movable first conveying line and the adjusting assembly are arranged, and different models of batteries can be applied.

Description

Technical Field

[0001] This invention relates to the field of battery electrolyte filling, and in particular to a lead-acid battery electrolyte filling device. Background Technology

[0002] In the production of lead-acid batteries, precisely adding a measured amount of dilute sulfuric acid electrolyte into the battery casing is a crucial step that determines battery performance and lifespan. Currently, various automated filling equipment has emerged in the industry.

[0003] For example, a Chinese patent discloses a lead-acid battery liquid injection device (publication number CN223680352U). This device uses a conveyor belt to transport the battery, an electric slide rail to raise and lower the operating table and liquid injector, and an electric push rod and clamping plate to hold and position the battery. This device automates the liquid injection process to a certain extent.

[0004] For example, a Chinese patent discloses a lead-acid battery processing electrolyte injection device, publication number CN116799448B. It uses a lower wiping pad installed inside the mounting groove. When the bottom of the rotating nozzle contacts the lower wiping pad, it removes the residual electrolyte at the bottom of the rotating nozzle. The rotating nozzle is designed to rotate, allowing it to rotate and contact the side wiping pad, thereby achieving a comprehensive wiping operation on the rotating nozzle. This effectively prevents the problem of a small amount of electrolyte leakage caused by the inability to wipe the injection nozzle in time after the existing device completes the electrolyte injection.

[0005] However, the following technical problems still exist in practical applications: First, existing electrolyte injection devices often leave electrolyte residue on the inner wall of the injection tube after injection. When the injector is lifted, this residual electrolyte can easily drip onto the battery cover, corroding the battery terminals and contaminating the battery's appearance. Although some devices are equipped with wiping structures to prevent leakage, they mostly only clean the residual electrolyte on the outside, making it difficult to clean the residual electrolyte on the inner wall of the injection tube, which may still lead to leakage.

[0006] Second, the position of the liquid injection tube in the existing liquid injection device is relatively fixed, which makes it less adaptable to batteries of different models and with different liquid injection port positions, and makes it difficult to achieve rapid model changeover.

[0007] Third, existing electrolyte injection devices rely on their own metering mechanisms or control pumps to precisely add electrolyte, with the injection volume entirely dependent on preset output values. However, during long-term operation, these metering devices are prone to flow drift due to factors such as pump pipe wear, seal aging, and accumulated errors in the drive mechanism. In other words, even with metering control, inaccurate injection can still occur due to metering discrepancies. Summary of the Invention

[0008] This invention provides a lead-acid battery electrolyte filling device, which can solve the problems of leakage after filling, poor adaptability to different battery specifications, and inaccurate filling volume control in the existing lead-acid battery electrolyte filling devices.

[0009] A lead-acid battery electrolyte filling device includes a liftable mounting base, a plurality of quantitative filling components are provided above the mounting base, and a first conveying line that can move horizontally along the width direction of the battery is provided on the top of the mounting base. Positioning components are symmetrically provided on the first conveying line for positioning the battery directly below the quantitative filling components. The quantitative filling assembly includes a filling head, a liquid outlet pipe fixed to the top of the filling head, and a level gauge fixed to the top of the filling head and located on one side of the liquid outlet pipe. The bottom of the filling head can form a sealed contact with the injection port. The bottom end of the liquid outlet pipe extends out of the bottom end of the filling head, and the detection end of the level gauge faces the inside of the injection port. The filling head is connected to a vacuum generating component for creating negative pressure inside the battery; the quantitative filling component is connected to an air blowing component for pushing the residual electrolyte inside the quantitative filling component into the battery.

[0010] Preferably, the quantitative dispensing assembly further includes a liquid supply pipe connected to the liquid storage tank, a first flexible tube connected between the liquid supply pipe and the liquid outlet pipe, and a sealing ring fixed to the bottom end of the dispensing head.

[0011] Preferably, the vacuum generating assembly includes a negative pressure tube and a plurality of second hoses, the two ends of which are respectively connected to the negative pressure tube and the filling head.

[0012] Preferably, the air blowing assembly includes an air supply pipe and a plurality of air blowing pipes, with the two ends of the air blowing pipes respectively connected to the air supply pipe and the liquid supply pipe.

[0013] Preferably, the positioning component includes a first cylinder fixed to the first conveyor line and a positioning frame fixed to the drive shaft of the first cylinder, wherein one end of the positioning frame facing the conveying direction of the first conveyor line is configured as an L-shaped structure.

[0014] Preferably, the positioning assembly further includes a second cylinder fixed on the positioning frame and a positioning plate fixed on the drive shaft of the second cylinder.

[0015] Preferably, a second conveyor line is provided on both sides of the first conveyor line, and the height of the first conveyor line after it descends is level with the height of the second conveyor line.

[0016] Preferably, a moving component is provided between the mounting base and the first conveyor line. The moving component includes a third cylinder fixed on the mounting base, the first conveyor line is movable on the mounting base, and the drive shaft of the third cylinder is fixedly connected to the first conveyor line.

[0017] Preferably, a base is provided below the mounting seat, and a fourth cylinder is symmetrically fixed on the base, and the mounting seat is fixed on the drive shaft of the fourth cylinder.

[0018] Preferably, the dispensing head is mounted on the liquid storage tank via an adjustment assembly, which is used to adjust the position of the dispensing head in the horizontal and vertical directions. This invention provides a lead-acid battery electrolyte filling device, which has the following beneficial effects: 1. By setting up an air blowing component, compressed air is introduced into the liquid supply pipe after filling is completed, pushing the residual electrolyte in the liquid outlet pipe, the first hose and the filling head into the battery, effectively preventing the electrolyte dripping after the filling head is lifted from causing corrosion and pollution to the battery cover and equipment.

[0019] 2. A level gauge is used to directly detect the actual electrolyte level inside the battery, and the filling stops when the electrolyte level reaches a preset position. Regardless of the differences in the internal volume of the battery, the level gauge can ensure that the electrolyte level in each cell remains precisely at the same height, achieving accurate and quantitative filling. 3. By setting up a first conveyor line that can move horizontally along the width of the battery, symmetrically arranged positioning components, and multiple adjustment components that can independently adjust the position of the filling head, it is possible to accurately position and quickly change different types of batteries, and to perform simultaneous filling of multiple injection ports, thereby improving the applicability and filling efficiency of the equipment.

[0020] 4. By setting up a vacuum generating component, negative pressure is drawn inside the battery before filling, which effectively removes the air inside the battery, reduces the generation of bubbles during electrolyte filling, improves the plate wetting effect and battery performance, and enhances the filling quality. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of a lead-acid battery electrolyte filling device provided by the present invention. Figure 1 ; Figure 2 A schematic diagram of the structure of a lead-acid battery electrolyte filling device provided by the present invention. Figure 2 ; Figure 3 A schematic diagram of the moving component, positioning component, vacuum generating component, and air blowing component of a lead-acid battery electrolyte filling device provided by the present invention; Figure 4 This is a schematic diagram of the quantitative filling component structure of a lead-acid battery electrolyte filling device provided by the present invention; Figure 5 This invention provides a lead-acid battery electrolyte filling device. Figure 4 Another perspective structural diagram; Figure 6 This invention provides a lead-acid battery electrolyte filling device. Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a cross-sectional view of the outlet pipe and filling head of a lead-acid battery electrolyte filling device provided by the present invention.

[0022] Explanation of reference numerals in the attached figures: 100. Mounting base; 200. First conveyor line; 300. Positioning assembly; 301. First cylinder; 302. Positioning frame; 303. Second cylinder; 304. Positioning plate; 400. Quantitative filling assembly; 401. Liquid supply pipe; 402. Filling head; 403. First hose; 404. Liquid outlet pipe; 405. Sealing ring; 406. Level gauge; 500. Adjustment assembly; 501. Track frame; 502. Guide groove; 503. Connecting... 504. Connecting post; 505. First screw; 506. Positioning knob; 507. Connecting plate; 508. Second screw; 609. Vacuum generating assembly; 600. Negative pressure pipe; 601. Second hose; 702. Air blowing assembly; 701. Air supply pipe; 702. Air blowing pipe; 800. Moving assembly; 801. Third cylinder; 802. Guide rail; 900. Base; 901. Fourth cylinder; 902. Second conveyor line; 1000. Electrically controlled valve. 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] like Figures 1 to 7As shown in the figure, an embodiment of the present invention provides a lead-acid battery electrolyte filling device, including a liftable mounting base 100, a plurality of quantitative filling components 400 above the mounting base 100 for injecting a quantitative amount of electrolyte into the battery; a storage tank is provided above the quantitative filling components 400, and a first conveying line 200 that can move horizontally along the width direction of the battery is provided on the top of the mounting base 100 for receiving and conveying the battery. The first conveying line 200 is symmetrically provided with positioning components 300 for positioning the battery directly below the quantitative filling component 400. The quantitative filling component 400 includes a filling head 402, an outlet pipe 404 fixed to the top of the filling head 402, a level gauge 406 fixed to the top of the filling head 402 and located on one side of the outlet pipe 404, a supply pipe 401 connected to the storage tank, a first flexible hose 403 connected between the supply pipe 401 and the outlet pipe 404, and a sealing ring 405 fixed to the bottom of the filling head 402. The filling head 402 has a cylindrical structure, and the sealing ring 405 of the filling head 402 forms an elastic sealing contact with the upper end face of the battery filling port to prevent electrolyte overflow and acid mist escape during the filling process. The bottom end of the outlet pipe 404 extends out of the bottom end of the filling head 402. The level gauge 406 adopts a non-contact laser level sensor, and the detection end faces the inside of the injection port. An electric control valve 1000 is installed on the supply pipe 401. To ensure the efficiency of electrolyte injection, a delivery pump (not shown in the figure) can be installed on the supply pipe 401 to facilitate the control of electrolyte supply.

[0025] After the filling head 402 is sealed to the filling port, the bottom end of the outlet pipe 404 extends into the filling port. The supply pipe 401 is connected to the outlet pipe 404 through the first flexible hose 403. The supply pipe 401 is equipped with an electronically controlled valve 1000 and a delivery pump for supplying electrolyte to the battery. The level gauge 406 has its detection end pointing vertically downwards towards the filling port, and can monitor the electrolyte level in the battery in real time. When the level rises to a preset height, the control system immediately closes the electronically controlled valve 1000 on the supply pipe 401, stopping the filling. The level gauge 406 directly detects the actual electrolyte level inside the battery, and the preset level is used as the criterion for stopping the filling. Regardless of the difference in the internal volume of the battery, the level gauge 406 can ensure that the electrolyte level in each cell is precisely at the same height, ensuring the quantitative filling accuracy of the electrolyte. When switching between different battery models on the production line, simply select the corresponding target liquid level height value in the control system (the target liquid level height may be different for different battery models), and the 406 level gauge will automatically adapt, reducing the difficulty and time of the changeover operation.

[0026] In some specific implementation plans, such as Figure 4 and Figure 5As shown. The filling head 402 is connected to a vacuum generating assembly 600, which is used to create negative pressure inside the battery to expel air and reduce the generation of air bubbles during the filling process. The vacuum generating assembly 600 includes a negative pressure tube 601 and multiple second hoses 602. The two ends of each second hose 602 are connected to the negative pressure tube 601 and the filling head 402, respectively. The negative pressure tube 601 is connected to an external vacuum pump. To facilitate control of the opening and closing of the second hoses 602, the connection between the second hoses 602 and the filling head 402 is via a rigid pipe, on which an electrically controlled valve 1000 is installed.

[0027] After the filling head 402 makes sealed contact with the injection port, the control system opens the electrically controlled valve 1000 connected to the pipe of the second hose 602 and starts the external vacuum pump. The vacuum pump evacuates the battery through the negative pressure pipe 601, the second hose 602, and the internal channel of the filling head 402. After evacuation is completed, the electrically controlled valve 1000 on the second hose 602 is closed, and then the electrolyte is added. Because the battery is already under negative pressure, the electrolyte will not be blocked by residual air during injection, nor will it generate a large number of bubbles due to violent air agitation.

[0028] In other specific embodiments, the vacuum generating assembly 600 uses an integrated negative pressure module instead of a distributed piping structure. Specifically, a miniature vacuum generator (not shown in the figure) is directly integrated into the sidewall of each filling head 402. When vacuuming is required, this miniature vacuum generator draws in and discharges the gas inside the battery through the filling head 402. This integrated solution eliminates the need for complex negative pressure piping, allows independent control of the vacuuming action of each filling head 402, provides a faster response time, and avoids negative pressure interference between multiple filling heads 402.

[0029] In some specific implementation plans, such as Figure 4 and Figure 5 As shown. The metering filling assembly 400 is connected to an air blowing assembly 700, which is used to push the residual electrolyte inside the metering filling assembly 400 into the battery, preventing residual liquid from dripping after the filling head 402 is raised. The air blowing assembly 700 includes an air supply pipe 701 and multiple air blowing pipes 702. The two ends of the air blowing pipes 702 are respectively connected to the air supply pipe 701 and the liquid supply pipe 401. The air supply pipe 701 is connected to an external air supply source. An electronically controlled valve 1000 is also installed on the air blowing pipe 702.

[0030] When the level gauge 406 detects that the electrolyte level has reached the preset height, the control system closes the electrically controlled valve 1000 on the supply pipe 401, stopping the electrolyte supply. At this time, a small amount of electrolyte remains in the outlet pipe 404, the first hose 403, and inside the outlet pipe 404. To prevent this residual liquid from dripping onto the battery cover surface after the filling head 402 is raised, the control system opens the electrically controlled valve 1000 on the air blowing pipe 702. Compressed air enters the supply pipe 401 through the air supply pipe 701 and the air blowing pipe 702, then flows sequentially through the first hose 403 and the outlet pipe 404, and finally blows out from the bottom of the outlet pipe 404. This compressed air (the air working pressure is calibrated so that, under the premise of effectively removing residual electrolyte, the compressed air blown out from the bottom of the outlet pipe 404 will not cause significant fluctuations or splashing of the electrolyte level inside the battery) pushes the residual electrolyte inside each of the supply pipes into the battery. Subsequently, the electrically controlled valve 1000 on the air blowing pipe 702 is closed, and the first delivery line 200 is lowered to separate the liquid injection port from the filling head 402.

[0031] In some other specific embodiments, the air blowing assembly 700 is fixed to the side wall of each filling head 402 (not shown in the figure), and the air blowing port is directly connected to the internal cavity of the filling head 402. Directly blowing air into the filling head 402 to remove residual liquid ensures that no dripping occurs during the lifting of the filling head 402. At the same time, as the gas flows upward, it keeps the residual liquid in the first hose 403 in an upward blowing state, so that no residual liquid drips from the inner wall of the filling head 402 during battery transportation, and the residual liquid in the first hose 403 will not flow out.

[0032] In some specific implementation plans, such as Figure 3 As shown. The positioning assembly 300 includes a first cylinder 301 fixed on the first conveyor line 200, a positioning frame 302 fixed on the drive shaft of the first cylinder 301, a second cylinder 303 fixed on the positioning frame 302, and a positioning plate 304 fixed on the drive shaft of the second cylinder 303. The end of the positioning frame 302 facing the conveying direction of the first conveyor line 200 is set with an L-shaped structure. The L-shaped structure is used to constrain the position of the battery from the front and the side.

[0033] When the battery is conveyed from the second conveyor line 902 upstream to the first conveyor line 200 and reaches the predetermined position, the first cylinders 301 on both sides extend simultaneously, pushing the positioning frames 302 on both sides towards the center, using the L-shaped structure of the positioning frames 302 to initially position the battery. Subsequently, the second cylinder 303 extends, pushing the positioning plate 304 to move, centering and clamping the battery from the front and rear sides. The battery is positioned directly below the quantitative filling component 400, ensuring the alignment accuracy between the filling head 402 and the battery injection port. After positioning is completed, the first conveyor line 200 drives the battery to rise for the filling operation.

[0034] In some specific implementation plans, such as Figure 1 , Figure 2 and Figure 3 As shown. To achieve continuous automated battery production, a second conveyor line 902 is provided on both sides of the first conveyor line 200. After filling, the first conveyor line 200 can be lowered to be flush with the second conveyor line 902 to transport the battery. A base 900 is provided below the mounting base 100, and a fourth cylinder 901 is symmetrically fixed on the base 900. The mounting base 100 is fixed on the drive shaft of the fourth cylinder 901, and the height of the first conveyor line 200 after lowering is kept flush with the height of the second conveyor line 902. By extending and retracting the fourth cylinder 901, the mounting base 100 can be driven to rise and fall as a whole, thereby driving the first conveyor line 200 on it to rise and fall. This lifting mechanism facilitates the sealing contact and separation between the injection port and the filling head 402. For battery models with different widths or different filling port positions, a moving component 800 is provided between the mounting base 100 and the first conveying line 200. The moving component 800 includes a third cylinder 801 fixed on the mounting base 100 and a guide rail 802 located on the top of the mounting base 100. The first conveying line 200 is movable on the mounting base 100 and slides on the guide rail 802. The drive shaft of the third cylinder 801 is fixedly connected to the first conveying line 200.

[0035] When the third cylinder 801 extends or retracts, it drives the first conveyor line 200 to move horizontally along the guide rail 802, thereby adjusting the position of the battery relative to the quantitative filling component 400 to adapt to batteries of different specifications, especially suitable for batteries with dual-row filling ports. The battery to be filled is conveyed from the upstream second conveyor line 902 to the first conveyor line 200. After positioning and filling are completed, the fourth cylinder 901 retracts, causing the mounting base 100 and the first conveyor line 200 to descend as a whole, making the height of the first conveyor line 200 flush with the second conveyor line 902. Then the first conveyor line 200 starts, conveying the filled battery to the downstream second conveyor line 902 for the next process.

[0036] In some specific implementation plans, such as Figure 5 and Figure 6As shown. The dispensing head 402 is mounted on the storage tank via an adjusting assembly 500, which is used to adjust the horizontal and vertical positions of the dispensing head 402. A track frame 501 is fixedly mounted at the bottom of the storage tank. A guide groove 502 is formed inside the track frame 501. The adjusting assembly 500 includes a first screw 504 movable in the guide groove 502, a connecting post 503 fixed at the bottom end of the first screw 504, a positioning knob 505 threadedly connected to the first screw 504, a connecting plate 506 fixedly mounted on the dispensing head 402, and a second screw 507 threadedly connected to the connecting plate 506. The positioning knob 505 is located above the guide groove 502 and is used to lock the first screw 504 to any position on the track frame 501. The connecting post 503 slides through the connecting plate 506, and one end of the second screw 507 can abut against the outside of the connecting post 503 to lock the position of the connecting post 503 relative to the connecting plate 506.

[0037] Loosen the positioning knob 505 and move the first screw 504 along the guide groove 502 to adjust the position of the filling head 402 in the horizontal direction (i.e., the length direction of the battery). Loosen the second screw 507 and slide the connecting plate 506 up and down along the connecting post 503 to adjust the height of the filling head 402 in the vertical direction. After adjustment, tighten the positioning knob 505 and the second screw 507 respectively. Through the adjustment component 500, the position of each filling head 402 can be adjusted independently to adapt to the distribution of the liquid injection port positions of different battery models. Among them, the horizontal adjustment of the filling head 402 is mainly applicable to liquid injection ports with different spacing, and the vertical adjustment of the filling head 402 is mainly used to reduce the number of filling heads 402 used according to the number of liquid injection ports.

[0038] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution will now be briefly explained in conjunction with specific application scenarios: The upstream second conveyor line 902 transports the battery to be filled to the first conveyor line 200. The positioning component 300 is activated, and the first cylinders 301 on both sides extend simultaneously to push the positioning frame 302 toward the center. The L-shaped structure of the positioning frame 302 is used to perform initial left-right centering positioning of the battery. Then, the second cylinder 303 extends to push the positioning plate 304 to complete the precise positioning of the battery directly below the quantitative filling component 400.

[0039] After the battery is positioned, the fourth cylinder 901 drives the mounting base 100 and the first conveyor line 200 to rise as a whole, so that the upper end face of the battery injection port forms an elastic seal with the filling head 402. The control system opens the electrically controlled valve 1000 on the second hose 602, and the external vacuum pump draws negative pressure into the battery through the negative pressure pipe 601, the second hose 602, and the internal channel of the filling head 402. After the vacuum is completed, the electrically controlled valve 1000 is closed. Then, the electrolyte is added. The control system opens the electrically controlled valve 1000 on the supply pipe 401, and the electrolyte is injected into the battery through the supply pipe 401, the first hose 403, and the outlet pipe 404. The liquid level gauge 406 monitors the liquid level in real time. When the liquid level reaches the preset position, the control system immediately closes the electrically controlled valve 1000 on the supply pipe 401 to stop the filling.

[0040] After the filling process stops, the control system opens the electrically controlled valve 1000 on the air blowing pipe 702. Compressed air enters the liquid supply pipe 401 through the air supply pipe 701 and the air blowing pipe 702, flows through the first hose 403 and the liquid outlet pipe 404 in sequence, and is then blown out from the bottom of the liquid outlet pipe 404, pushing all the residual electrolyte inside the liquid outlet pipe 404, the first hose 403, and the filling head 402 into the battery. After the air blowing is completed, the electrically controlled valve 1000 on the air blowing pipe 702 is closed. At this time, there is no residual electrolyte inside the filling head 402.

[0041] Subsequently, the fourth cylinder 901 retracts, causing the mounting base 100 and the first conveyor line 200 to descend as a whole, disengaging the filling head 402 from the injection port. The first conveyor line 200 descends to be flush with the downstream second conveyor line 902, and then starts, conveying the filled battery to the downstream second conveyor line 902 for the next process.

[0042] This lead-acid battery electrolyte filling device utilizes a vacuum generator 600 to create a vacuum before filling, effectively reducing bubble formation and improving plate wetting. An air blowing assembly 700 removes residual air after filling, solving the dripping problem and protecting the battery cover surface. A liquid level gauge 406 monitors the liquid level in real time, enabling precise filling. Positioning and width adaptation of the battery are achieved through a positioning assembly 300 and a moving assembly 800. An adjustment assembly 500 allows for multi-degree-of-freedom adjustment of the filling head 402, accommodating various battery models. The coordinated operation of these components forms a highly efficient, precise, and clean automated electrolyte filling system.

[0043] 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. A lead-acid battery electrolyte filling device, comprising a liftable mounting base (100), characterized in that, The mounting base (100) is provided with a plurality of quantitative filling components (400) above it. The top of the mounting base (100) is provided with a first conveying line (200) that can move horizontally along the width direction of the battery. The first conveying line (200) is symmetrically provided with positioning components (300) for positioning the battery directly below the quantitative filling components (400). The quantitative filling assembly (400) includes a filling head (402), an outlet pipe (404) fixed to the top of the filling head (402), and a level gauge (406) fixed to the top of the filling head (402) and located on one side of the outlet pipe (404). The bottom of the filling head (402) can form a sealed contact with the injection port. The bottom end of the outlet pipe (404) extends out of the bottom end of the filling head (402). The detection end of the level gauge (406) faces the inside of the injection port. The filling head (402) is connected to a vacuum generating assembly (600) for drawing negative pressure inside the battery; The metering filling component (400) is connected to an air blowing component (700) for pushing the residual electrolyte inside the metering filling component (400) into the battery.

2. The lead-acid battery electrolyte filling device as described in claim 1, characterized in that, The quantitative filling assembly (400) also includes a supply pipe (401) connected to the storage tank, a first flexible tube (403) connected between the supply pipe (401) and the outlet pipe (404), and a sealing ring (405) fixed at the bottom of the filling head (402).

3. The lead-acid battery electrolyte filling device as described in claim 2, characterized in that, The vacuum generating assembly (600) includes a negative pressure tube (601) and a plurality of second hoses (602), the two ends of which are connected to the negative pressure tube (601) and the filling head (402).

4. The lead-acid battery electrolyte filling device as described in claim 2, characterized in that, The air blowing assembly (700) includes an air supply pipe (701) and a plurality of air blowing pipes (702), with the two ends of the air blowing pipes (702) respectively connected to the air supply pipe (701) and the liquid supply pipe (401).

5. The lead-acid battery electrolyte filling device as described in claim 1, characterized in that, The positioning component (300) includes a first cylinder (301) fixed on the first conveying line (200) and a positioning frame (302) fixed on the drive shaft of the first cylinder (301). The end of the positioning frame (302) facing the conveying direction of the first conveying line (200) is configured as an L-shaped structure.

6. The lead-acid battery electrolyte filling device as described in claim 5, characterized in that, The positioning assembly (300) further includes a second cylinder (303) fixed on the positioning frame (302) and a positioning plate (304) fixed on the drive shaft of the second cylinder (303).

7. The lead-acid battery electrolyte filling device as described in claim 6, characterized in that, The first conveyor line (200) is provided with a second conveyor line (902) on both sides, and the height of the first conveyor line (200) after it descends is level with the height of the second conveyor line (902).

8. The lead-acid battery electrolyte filling device as described in claim 1, characterized in that, A moving component (800) is provided between the mounting base (100) and the first conveyor line (200). The moving component (800) includes a third cylinder (801) fixed on the mounting base (100). The first conveyor line (200) is movable on the mounting base (100). The drive shaft of the third cylinder (801) is fixedly connected to the first conveyor line (200).

9. The lead-acid battery electrolyte filling device as described in claim 8, characterized in that, The mounting base (100) is provided with a base (900) below it, and a fourth cylinder (901) is symmetrically fixed on the base (900). The mounting base (100) is fixed on the drive shaft of the fourth cylinder (901).

10. The lead-acid battery electrolyte filling device as described in claim 1, characterized in that, The filling head (402) is mounted on the liquid storage tank via an adjustment component (500), which is used to adjust the position of the filling head (402) in the horizontal and vertical directions.

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