Lead-acid storage battery electrolyte filling equipment and use method thereof

Abstract

The invention relates to the technical field of storage battery production, and particularly discloses lead-acid storage battery electrolyte filling equipment and a using method thereof.The lead-acid storage battery electrolyte filling equipment comprises a rack, a hydraulic cylinder is fixedly connected to the top of the rack, a liquid box is fixedly connected to the right side of the rack, and an acid return tank is fixedly connected to the rear end of the inner wall of the rack; an acid return pipe is fixedly connected between the acid return tank and the liquid box, a check valve is installed in the acid return pipe, an air exhaust pipeline is fixedly inserted into the top of the acid return tank, a filling assembly is arranged in the rack and comprises a filling frame fixedly connected with the bottom of an output shaft of a hydraulic cylinder, and an empty groove is formed in the filling frame; according to the present invention, with the cooperation of the structure, the electrolyte in the storage battery can be maintained at the bottom area of the negative pressure pipeline, such that the excessive electrolyte addition or the insufficient electrolyte addition can be avoided, and the battery quality can be improved; therefore, the waste of the electrolyte is prevented from being influenced by inaccurate addition of the electrolyte.

Description

Technical Field

[0001] The invention relates to the technical field of battery production, and in particular to a lead-acid battery electrolyte filling device and a use method thereof. Background Art

[0002] The working principle of lead-acid batteries is based on the chemical reaction between lead and dilute sulfuric acid. During the discharge process, the pure lead at the negative electrode reacts with sulfuric acid to generate lead sulfate and water, while releasing electrical energy. During the charging process, this chemical reaction proceeds in reverse, and lead sulfate is reduced to lead and lead dioxide, while sulfuric acid is regenerated and electrical energy is stored. Therefore, sulfuric acid is a key component of this chemical reaction and a certain concentration must be maintained to ensure the normal operation of the battery. Therefore, electrolyte needs to be added to the battery during the production of lead-acid batteries.

[0003] The battery electrolyte filling equipment in the prior art is usually unable to accurately control the amount of electrolyte filled, which can easily lead to excessive or insufficient electrolyte addition. Too much electrolyte will cause the internal pressure of the battery to increase, which may cause the shell to rupture and lead to electrolyte leakage, which will not only damage the battery and shorten the battery life, but may also pollute the surrounding environment. Too little electrolyte will lead to insufficient infiltration of the active substances inside the battery, and some active substances will be unable to participate in the electrochemical reaction of the battery, thereby affecting the discharge capacity and service life of the battery. Summary of the invention

[0004] The purpose of the present invention is to provide an electrolyte filling device for a lead-acid battery and a method for using the same, which can keep the electrolyte height inside the battery at the bottom area of ​​a negative pressure pipe, avoid adding too much or too little electrolyte, and thus avoid wasting electrolyte due to inaccurate addition of electrolyte, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lead-acid battery electrolyte filling device, comprising a frame, a hydraulic cylinder is fixedly connected to the top of the frame, a liquid box is fixedly connected to the right side of the frame, an acid return tank is fixedly connected to the rear end of the inner wall of the frame, an acid return pipe is fixedly connected between the acid return tank and the liquid box, a check valve is installed inside the acid return pipe, an air extraction pipeline is fixedly plugged into the top of the acid return tank, a filling assembly is arranged inside the frame, and the filling assembly includes a bottom fixed to the output shaft of the hydraulic cylinder A connected filling rack, wherein an empty slot is provided inside the filling rack, a filling pipe is fixedly inserted between the empty slot and the liquid tank, a groove is provided at the bottom of the filling rack, a through-tube is fixedly inserted between the groove and the inside of the filling rack, a sleeve portion is provided inside the groove and on the outside of the through-tube, a negative pressure pipe is fixedly inserted at the rear end of the filling rack at the top position of the groove, an end of the negative pressure pipe away from the filling rack is fixedly inserted with the top of the acid return tank, and a sealing gasket is fixedly connected to the bottom of the filling rack at the outside position of the groove.

[0006] Preferably, an adjusting portion is provided inside the filling rack, the sleeve portion comprises a top pipe fixedly connected to the inner wall of the groove, a bellows is fixedly connected to the bottom of the top pipe, and a bottom pipe is fixedly connected to the bottom of the bellows.

[0007] Preferably, blocking plates are fixedly connected to both sides of the outer wall of the bottom tube, the adjusting part includes a sliding plate slidably connected to the inside of the filling frame and located above the blocking plate, the adjusting part also includes a sliding groove opened in the filling frame, the sliding plate slides in the sliding groove, the bottom of the sliding plate is fixedly connected to a push rod, the bottom of the push rod passes through the filling frame, a spring is fixedly connected between the top of the blocking plate and the bottom of the filling frame, the rear end of the sliding plate is fixedly connected to a moving plate, the surface of the moving plate is slidably connected to the filling frame, the top of the filling frame is fixedly connected to an electric telescopic rod, the output shaft of the electric telescopic rod penetrates into the interior of the filling frame and is fixedly connected to the sliding plate.

[0008] Preferably, the bottom of the outer wall of the push rod is slidably connected to the blocking plate, and the outer wall of the push rod above and below the blocking plate is fixedly connected with blocking blocks.

[0009] Preferably, a scraping assembly is provided at the bottom and below of the adding tube, the scraping assembly includes a small ring movably connected to the inside of the bottom tube, the ring side of the small ring is rotatably connected with a ball, and there are multiple balls, the bottom of the small ring is fixedly connected with a scraping frame, the scraping assembly also includes a small plate fixedly connected to the bottom of the inner wall of the top tube, the bottom of the small plate is fixedly connected with a round shaft, the inner wall of the small ring is fixedly connected with a mounting frame, the outer wall of the round shaft is provided with a threaded groove, and the inner side of the middle part of the mounting frame is fixedly connected with a limiting block.

[0010] Preferably, the scraper assembly further comprises an annular groove formed on the inner wall of the bottom tube, and the portion of the ball away from the small ring is located inside the annular groove.

[0011] Preferably, the scraper frame is L-shaped, and the inner side of the bottom of the scraper frame fits the bottom of the bottom tube.

[0012] Preferably, a vertical groove is provided on the outer surface of the circular shaft at the bottom of the thread groove, and the vertical groove is communicated with the thread groove.

[0013] Preferably, a baffle assembly is provided at the bottom of the exhaust pipe, and the baffle assembly includes a mounting cover fixedly connected to the bottom of the exhaust pipe, a connecting plate is fixedly connected to the bottom of the inner wall of the mounting cover, a lifting rod is slidably connected to the middle part of the connecting plate, a buoyancy plate is fixedly connected to the bottom of the lifting rod, a circular plate is fixedly connected to the top of the lifting rod, and a rubber pad is fixedly connected to the top of the circular plate.

[0014] A method for using a lead-acid battery electrolyte filling device comprises the following steps:

[0015] S1. Place the battery, extend the output shaft of the hydraulic cylinder, make the bottom of the sealing gasket contact the top surface of the battery, and insert the bottom of the sleeve into the battery;

[0016] S2. The air is pumped out of the air extraction pipe to generate negative pressure inside the acid return tank and the battery, and the electrolyte inside the liquid tank enters the battery.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the function of the filling assembly, it can be ensured that when the electrolyte is filled, the electrolyte height inside the battery is kept at the bottom area of ​​the negative pressure pipe, avoiding excessive or insufficient addition of electrolyte, thereby avoiding inaccurate addition of electrolyte and affecting the waste of electrolyte;

[0019] 2. Through the action of the adjustment part, when the push rod part moves downward to squeeze the blocking plate, the bottom tube moves downward, so that the height of the bottom of the bottom tube can be adjusted, which is convenient for adjusting the height of the bottom of the bottom tube according to the different heights of liquid addition required;

[0020] 3. Through the action of the blocking block, the blocking block at the bottom squeezes the blocking plate, and the output shaft of the electric telescopic rod is slightly extended and retracted up and down, so as to shake off the electrolyte attached to the inside of the sleeve part, and prevent the electrolyte from falling on the processing table or the surface of the battery and causing pollution to the processing environment;

[0021] 4. The limiting block slides inside the threaded groove, which makes it easier for the mounting frame to rotate with the small ring and the scraping frame, thereby scraping the inner wall of the bottom tube, and further shaking off the residual electrolyte inside the bottom tube, further preventing the electrolyte from falling on the processing table or the surface of the battery and causing pollution to the processing environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is the overall structural view of the present invention;

[0024] Figure 2 It is a side view structural schematic diagram of the present invention;

[0025] Figure 3 It is a partial structural schematic diagram of the acid recovery tank of the present invention;

[0026] Figure 4 It is a half-section structural schematic diagram of the filling rack of the present invention;

[0027] Figure 5 It is a schematic diagram of the partial structure of the negative pressure pipeline of the present invention;

[0028] Figure 6 It is a partial structural schematic diagram of the movable plate of the present invention;

[0029] Figure 7 It is a partial structural schematic diagram of the scraping assembly of the present invention;

[0030] Figure 8 For the present invention Figure 7 A magnified view of point A;

[0031] Fig. 9 It is a schematic diagram of a half-section structure of the mounting frame of the present invention;

[0032] Fig.10 It is a schematic diagram of the half-section structure of the acid recovery tank of the present invention.

[0033] Description of reference numerals:

[0034] 1. Frame; 2. Hydraulic cylinder; 3. Acid return tank; 4. Liquid tank; 5. Adding pipe; 6. Filling assembly; 61. Filling rack; 62. Empty slot; 63. Groove; 64. Pipe; 65. Negative pressure pipeline; 66. Casing; 661. Top pipe; 662. Bellows; 663. Bottom pipe; 7. Adjustment unit; 71. Sliding plate; 72. Push rod; 73. Moving plate; 74. Stopper; 75. Sliding groove; 8. Scraping assembly; 81. Ring groove; 82. Small Ring; 83, ball; 84, scraper frame; 85, small plate; 86, round shaft; 87, mounting frame; 88, threaded groove; 89, limiting block; 810, vertical groove; 9, flow blocking assembly; 91, mounting cover; 92, lifting rod; 93, buoyancy plate; 94, round plate; 95, rubber pad; 10, acid return pipe; 11, check valve; 12, blocking plate; 13, sealing gasket; 14, spring; 15, electric telescopic rod; 16, exhaust pipe; 17, connecting plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 7 The present invention provides a technical solution: a lead-acid battery electrolyte filling device, comprising a frame 1, a hydraulic cylinder 2 is fixedly connected to the top of the frame 1, a liquid tank 4 is fixedly connected to the right side of the frame 1, an acid return tank 3 is fixedly connected to the rear end of the inner wall of the frame 1, an acid return pipe 10 is fixedly connected between the acid return tank 3 and the liquid tank 4, a check valve 11 is installed inside the acid return pipe 10, an air extraction pipeline 16 is fixedly plugged into the top of the acid return tank 3, a filling assembly 6 is arranged inside the frame 1, and the filling assembly 6 includes a filling frame 61 fixedly connected to the bottom of the output shaft of the hydraulic cylinder 2, and the filling frame An empty groove 62 is provided inside 61, and a filling pipe 5 is fixedly inserted between the empty groove 62 and the liquid box 4. A groove 63 is provided at the bottom of the filling rack 61, and a through pipe 64 is fixedly inserted between the groove 63 and the inside of the filling rack 61. A sleeve portion 66 is provided inside the groove 63 and on the outside of the through pipe 64. The rear end of the filling rack 61 is located at the top position of the groove 63 and is fixedly inserted with a negative pressure pipe 65. The end of the negative pressure pipe 65 away from the filling rack 61 is fixedly inserted with the top of the acid return tank 3, and the bottom of the filling rack 61 is located at the outside position of the groove 63 and is fixedly connected with a sealing gasket 13.

[0037] By adopting the above technical solution, when in use, the battery that needs to be filled with electrolyte is first placed into the bottom of the inner wall of the frame 1. The inner bottom of the frame 1 can be provided with a structure for positioning the battery so that the injection hole opened on the battery is located below the sleeve portion 66. It should be noted that the aperture of the injection hole opened on the battery is larger than the tube diameter of the sleeve portion 66. After the battery is placed, the output shaft of the hydraulic cylinder 2 is extended to move the filling frame 61 downward until the bottom of the sealing gasket 13 contacts the top surface of the battery, and the sealing gasket 13 plays a sealing role. During this process, the bottom area of ​​the sleeve portion 66 is inserted into the interior of the battery from the filling hole of the battery.

[0038] An air pump is provided at one end of the air extraction pipe 16 away from the acid recovery tank 3 for extracting air from the inside of the acid recovery tank 3. After the bottom area of ​​the sleeve portion 66 is inserted into the inside of the storage battery, the air pump is started, and under the action of the check valve 11 inside the acid recovery pipe 10, negative pressure is generated inside the acid recovery tank 3. Under the action of the negative pressure pipe 65, the groove 63 inside the filling rack 61, the empty slot 62 and the inside of the storage battery are all negatively pressurized. Under the action of the negative pressure, the electrolyte inside the liquid tank 4 is added to the inside of the empty slot 62 through the adding pipe 5, and enters the inside of the penetration pipe 64 and the sleeve portion 66, and then enters the inside of the storage battery. It should be noted that the height at which the bottom of the negative pressure pipe 65 is inserted into the battery is the height at which the electrolyte is filled into the battery. When the electrolyte height inside the battery reaches the bottom height of the negative pressure pipe 65, the air pump continues to pump air, so that the interior of the acid return tank 3 still has a negative pressure, and the excess electrolyte enters the interior of the negative pressure pipe 65 through the groove 63, and then enters the interior of the acid return tank 3. This ensures that when the electrolyte is filled, the electrolyte height inside the battery remains at the bottom area of ​​the negative pressure pipe 65, avoiding excessive or insufficient addition of electrolyte, thereby avoiding inaccurate addition of the amount of electrolyte and affecting the waste of electrolyte.

[0039] It should be noted that an alkali liquid cylinder can be provided at the exhaust pipe 16 to place an acid gas corrosion air pump in the electrolyte. After the electrolyte enters the interior of the acid return tank 3, the output shaft of the hydraulic cylinder 2 contracts. Under the action of the negative pressure in the acid return tank 3, excess electrolyte will enter the acid return tank 3, reducing the electrolyte flowing from the sleeve portion 66 onto the work surface, avoiding electrolyte waste or causing pollution to the processing environment. Subsequently, the air pump is turned off. At this time, the negative pressure inside the acid return tank 3 is released. Under the action of the gravity of the electrolyte, the check valve 11 is opened, and the electrolyte inside the acid return tank 3 returns to the liquid tank 4 through the acid return pipe 10.

[0040] Specifically, Figures 3 to 8As shown, the filling frame 61 is provided with an adjusting portion 7 inside, the sleeve portion 66 includes a top pipe 661 fixedly connected to the inner wall of the groove 63, the bottom of the top pipe 661 is fixedly connected to a bellows 662, the bottom of the bellows 662 is fixedly connected to a bottom pipe 663, and both sides of the outer wall of the bottom pipe 663 are fixedly connected to a blocking plate 12, the adjusting portion 7 includes a sliding plate 71 slidably connected to the filling frame 61 and located above the blocking plate 12, and the adjusting portion 7 also includes a sliding groove 75 opened in the filling frame 61, the sliding plate 71 is fixedly connected to the inner wall of the filling frame 61, and the sliding plate 71 is fixedly connected to the inner wall of the filling frame 61. The movable plate 71 slides inside the sliding groove 75, and a push rod 72 is fixedly connected to the bottom of the sliding plate 71, and the bottom of the push rod 72 passes through the filling rack 61. A spring 14 is fixedly connected between the top of the blocking plate 12 and the bottom of the filling rack 61. A movable plate 73 is fixedly connected to the rear end of the sliding plate 71, and the surface of the movable plate 73 is slidably connected to the filling rack 61. An electric telescopic rod 15 is fixedly connected to the top of the filling rack 61, and the output shaft of the electric telescopic rod 15 penetrates into the interior of the filling rack 61 and is fixedly connected to the movable plate 73.

[0041] By adopting the above technical scheme, in the prior art, different battery electrolyte heights are different. When it is necessary to change the electrolyte filling height, the output shaft of the electric telescopic rod 15 is extended to make the movable plate 73 move downward, so that the sliding plate 71 fixedly connected thereto moves downward, which is convenient for the push rod 72 to move downward. At this time, part of the push rod 72 moves downward to squeeze the blocking plate 12. Since a bellows 662 is provided between the top tube 661 and the bottom tube 663, the bellows 662 itself can be extended and retracted. When part of the push rod 72 moves downward to squeeze the blocking plate 12, the bottom tube 663 moves downward, so that the height of the bottom of the bottom tube 663 can be adjusted, which is convenient for adjusting the height of the bottom of the bottom tube 663 according to the different liquid filling heights required.

[0042] After the liquid is added, the output shaft of the electric telescopic rod 15 contracts, so that the moving plate 73, the sliding plate 71 and the push rod 72 move upward, and the bottom tube 663 is reset under the elastic force of the spring 14.

[0043] Specifically, Figures 3 to 8 As shown, the bottom of the outer wall of the push rod 72 is slidably connected to the blocking plate 12 , and the outer wall of the push rod 72 is fixedly connected with blocking blocks 74 above and below the blocking plate 12 .

[0044] By adopting the above technical solution, when the push rod 72 moves downward, the blocking block 74 at the top squeezes the blocking plate 12 so that the blocking plate 12 moves downward with the bottom tube 663. When the electrolyte enters the interior of the acid recovery tank 3, the output shaft of the hydraulic cylinder 2 is first slightly contracted, and the bottom of the sealing gasket 13 does not contact the top surface of the battery. At this time, the negative pressure inside the battery is released, and the bottom surface of the bottom tube 663 is away from the liquid surface inside the battery. At this time, the electric telescopic rod 15 contracts, and the blocking block 74 at the bottom squeezes the blocking plate 12, and the output shaft of the electric telescopic rod 15 is slightly extended and retracted up and down, so as to shake off the electrolyte attached to the inside of the sleeve part 66, so as to avoid the electrolyte falling on the processing table or the surface of the battery and causing pollution to the processing environment.

[0045] It should be noted that the amount of electrolyte shaken off is small and does not affect the amount to be filled, so it can be ignored.

[0046] Specifically, Figures 6 to 9 As shown, a scraper assembly 8 is provided at the bottom and below of the adding tube 5, and the scraper assembly 8 includes a small ring 82 movably connected to the inside of the bottom tube 663, and the ring side of the small ring 82 is rotatably connected to a ball 83, and there are multiple balls 83, and the bottom of the small ring 82 is fixedly connected to a scraper frame 84, and the scraper assembly 8 also includes a small plate 85 fixedly connected to the bottom of the inner wall of the top tube 661, and the bottom of the small plate 85 is fixedly connected to a round shaft 86, and the inner wall of the small ring 82 is fixedly connected to a mounting frame 87, and the outer wall of the round shaft 86 is provided with a threaded groove 88, and the inner side of the middle part of the mounting frame 87 is fixedly connected to a limiting block 89, and the scraper assembly 8 also includes an annular groove 81 opened on the inner wall of the bottom tube 663, and the part of the ball 83 away from the small ring 82 is inside the annular groove 81.

[0047] By adopting the above technical solution, when the blocking block 74 at the bottom squeezes the blocking plate 12 and the output shaft of the electric telescopic rod 15 slightly extends and retracts up and down, the bottom tube 663 moves up and down. At this time, the limiting block 89 is inside the threaded groove 88. Since the small plate 85 is fixed to the inner wall of the top tube 661 and the bottom of the small plate 85 is fixed to the round shaft 86, when the bottom tube 663 moves up and down, the mounting frame 87 and the limiting block 89 move up and down, so that the limiting block 89 slides inside the threaded groove 88, so that it is convenient for the mounting frame 87 to rotate with the small ring 82 and the scraping frame 84, so as to scrape the inner wall of the bottom tube 663, and further shake off the residual electrolyte inside the bottom tube 663, so as to further avoid the electrolyte falling on the processing table or the surface of the battery and causing pollution to the processing environment.

[0048] It should be noted that the design of the threaded groove 88, the mounting frame 87 and the limiting block 89 is similar to the connection method between the screw part and the flying saucer part in a hand-propelled flying saucer, ensuring that the mounting frame 87 can rotate when the bottom tube 663 moves up and down.

[0049] The design of the ball 83 is conducive to reducing friction, and the portion of the ball 83 away from the small ring 82 is located inside the ring groove 81, thereby avoiding relative displacement between the small ring 82 and the bottom tube 663.

[0050] Specifically, Figures 6 to 9 As shown, the scraper frame 84 is L-shaped, and the inner side of the bottom of the scraper frame 84 fits the bottom of the bottom tube 663.

[0051] By adopting the above technical solution, such a design makes it easy to clean the bottom of the bottom tube 663, further preventing the electrolyte from falling on the processing table or the surface of the battery and causing pollution to the processing environment.

[0052] Specifically, Figures 7 to 9 As shown, a vertical groove 810 is formed on the outer surface of the circular shaft 86 at the bottom of the thread groove 88 , and the vertical groove 810 is connected to the thread groove 88 .

[0053] By adopting the above technical solution, when the blocking block 74 at the top presses the blocking plate 12, the limiting block 89 enters the interior of the vertical groove 810 to prevent the scraper frame 84 from rotating when adjusting the bottom height of the bottom tube 663.

[0054] Specifically, Figure 1 , Figure 2 and Fig.10 As shown, a baffle assembly 9 is provided at the bottom of the exhaust pipe 16, and the baffle assembly 9 includes a bottom mounting cover 91 fixedly connected to the exhaust pipe 16, a connecting plate 17 is fixedly connected to the bottom of the inner wall of the mounting cover 91, a lifting rod 92 is slidably connected to the middle part of the connecting plate 17, a buoyancy plate 93 is fixedly connected to the bottom of the lifting rod 92, a circular plate 94 is fixedly connected to the top of the circular plate 94, and a rubber pad 95 is fixedly connected to the top of the circular plate 94.

[0055] By adopting the above technical solution, in the initial state, the bottom of the circular plate 94 is in contact with the connecting plate 17. When the liquid level of the electrolyte in the battery reaches a specified height, due to the action of the air pump, a negative pressure is generated inside the acid return tank 3, and the electrolyte continuously enters the acid return tank 3. When the liquid level inside the acid return tank 3 reaches the position of the buoyancy plate 93, under the buoyancy of the electrolyte in the acid return tank 3, the buoyancy plate 93 moves upward, thereby causing the lifting rod 92 to move upward, and then the circular plate 94 and the rubber pad 95 move inside the mounting cover 91 until the rubber pad 95 blocks the bottom of the exhaust pipe 16. At this time, the inside of the acid return tank 3 is no longer pumped with negative pressure, thereby avoiding excessive electrolyte from flowing out of the acid return tank 3 due to the timely cutting off of the negative pressure, avoiding electrolyte waste and air pump damage.

[0056] A method for using a lead-acid battery electrolyte filling device comprises the following steps:

[0057] S1. Place the battery, extend the output shaft of the hydraulic cylinder 2, make the bottom of the sealing gasket 13 contact the top surface of the battery, and insert the bottom of the sleeve 66 into the battery;

[0058] S2, the air extraction pipe 16 is evacuated to generate negative pressure inside the acid return tank 3 and the storage battery, and the electrolyte inside the liquid tank 4 enters the storage battery.

[0059] Working principle: the battery to be filled with electrolyte is placed at the bottom of the inner wall of the frame 1, and the injection hole on the battery is located below the sleeve portion 66. The output shaft of the hydraulic cylinder 2 is extended to move the filling frame 61 downward until the bottom of the sealing gasket 13 contacts the top surface of the battery, and the sealing gasket 13 plays a sealing role. The bottom area of ​​the sleeve portion 66 is inserted into the interior of the battery from the filling hole of the battery. An air pump is provided at one end of the exhaust pipe 16 away from the acid return tank 3. The air pump is started to exhaust air from the exhaust pipe 16, and negative pressure is generated inside the acid return tank 3. Under the action of the negative pressure pipe 65, negative pressure is generated in the groove 63, the empty slot 62 and the interior of the battery of the filling frame 61. Under the action of pressure, the electrolyte in the liquid box 4 is added to the empty slot 62 through the adding tube 5, and enters the inside of the through-tube 64 and the sleeve portion 66, and then enters the inside of the battery. When the electrolyte height in the battery reaches the bottom height of the negative pressure pipe 65, the air pump continues to pump air, so that the inside of the acid return tank 3 still has a negative pressure, and the excess electrolyte enters the inside of the negative pressure pipe 65 through the groove 63, and then enters the inside of the acid return tank 3, ensuring that when the electrolyte is filled, the electrolyte height in the battery is kept at the bottom area of ​​the negative pressure pipe 65, avoiding excessive or insufficient addition of electrolyte, thereby avoiding inaccurate addition of the amount of electrolyte and affecting the waste of electrolyte.

[0060] The output shaft of the electric telescopic rod 15 is extended to make the movable plate 73 move downward, so that the sliding plate 71 fixedly connected thereto moves downward, which facilitates the downward movement of the push rod 72. At this time, part of the push rod 72 moves downward to squeeze the blocking plate 12. Since a bellows 662 is provided between the top tube 661 and the bottom tube 663, the bellows 662 itself can be extended and retracted. When part of the push rod 72 moves downward to squeeze the blocking plate 12, the bottom tube 663 moves downward, so that the height of the bottom of the bottom tube 663 can be adjusted, which is convenient for adjusting the height of the bottom of the bottom tube 663 according to the different liquid adding heights.

[0061] First, the output shaft of the hydraulic cylinder 2 is slightly contracted, and the bottom of the sealing gasket 13 does not contact the top surface of the battery. At this time, the negative pressure inside the battery is released, and the bottom surface of the bottom tube 663 is away from the liquid surface inside the battery. At this time, the electric telescopic rod 15 is contracted, and the blocking block 74 at the bottom squeezes the blocking plate 12, and the output shaft of the electric telescopic rod 15 is slightly extended and retracted up and down, so as to shake off the electrolyte attached to the inside of the sleeve part 66, so as to prevent the electrolyte from falling on the processing table or the surface of the battery and causing pollution to the processing environment. At the same time, the output shaft of the electric telescopic rod 15 is slightly extended and retracted up and down, and the bottom tube 663 is Move up and down, at this time, the limiting block 89 is inside the threaded groove 88. Since the small plate 85 is fixed on the inner wall of the top tube 661, and the bottom of the small plate 85 is fixed to the round shaft 86, when the bottom tube 663 moves up and down, the mounting frame 87 and the limiting block 89 move up and down, so that the limiting block 89 slides inside the threaded groove 88, so that it is convenient for the mounting frame 87 to rotate with the small ring 82 and the scraping frame 84, so as to scrape the inner wall of the bottom tube 663, and further shake off the residual electrolyte inside the bottom tube 663, and further avoid the electrolyte falling on the processing table or the surface of the battery to cause pollution to the processing environment.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lead-acid battery electrolyte filling device, comprising a frame (1), characterized in that: The top of the frame (1) is fixedly connected to a hydraulic cylinder (2), the right side of the frame (1) is fixedly connected to a liquid tank (4), the rear end of the inner wall of the frame (1) is fixedly connected to an acid return tank (3), an acid return pipe (10) is fixedly connected between the acid return tank (3) and the liquid tank (4), a check valve (11) is installed inside the acid return pipe (10), and the top of the acid return tank (3) is fixedly plugged with an exhaust pipe (16); A filling assembly (6) is arranged inside the frame (1), and the filling assembly (6) comprises a filling frame (61) fixedly connected to the bottom of the output shaft of the hydraulic cylinder (2), an empty slot (62) is provided inside the filling frame (61), a filling pipe (5) is fixedly plugged between the empty slot (62) and the liquid tank (4), a groove (63) is provided at the bottom of the filling frame (61), and a filling pipe (5) is fixedly plugged between the groove (63) and the inside of the filling frame (61) A through-tube (64) is provided inside the groove (63) and on the outside of the through-tube (64). A sleeve portion (66) is provided. The rear end of the filling rack (61) is located at the top of the groove (63) and is fixedly plugged with a negative pressure pipe (65). One end of the negative pressure pipe (65) away from the filling rack (61) is fixedly plugged with the top of the acid return tank (3). The bottom of the filling rack (61) is located at the outside of the groove (63) and is fixedly connected with a sealing gasket (13).

2. The lead-acid battery electrolyte filling device according to claim 1, characterized in that: The filling frame (61) is provided with an adjusting portion (7) inside, and the sleeve portion (66) comprises a top pipe (661) fixedly connected to the inner wall of the groove (63), the bottom of the top pipe (661) is fixedly connected to a bellows (662), and the bottom of the bellows (662) is fixedly connected to a bottom pipe (663).

3. A lead-acid battery electrolyte filling device according to claim 2, characterized in that: Both sides of the outer wall of the bottom tube (663) are fixedly connected to a blocking plate (12); the adjusting portion (7) includes a sliding plate (71) slidably connected to the inside of the filling frame (61) and located above the blocking plate (12); the adjusting portion (7) also includes a sliding groove (75) provided inside the filling frame (61); the sliding plate (71) slides inside the sliding groove (75); the bottom of the sliding plate (71) is fixedly connected to a push rod (72); the bottom of the push rod (72) The filling frame (61) is penetrated by a spring (14) fixedly connected between the top of the blocking plate (12) and the bottom of the filling frame (61); the rear end of the sliding plate (71) is fixedly connected to a moving plate (73); the surface of the moving plate (73) is slidably connected to the filling frame (61); the top of the filling frame (61) is fixedly connected to an electric telescopic rod (15); the output shaft of the electric telescopic rod (15) penetrates the interior of the filling frame (61) and is fixedly connected to the moving plate (73).

4. A lead-acid battery electrolyte filling device according to claim 3, characterized in that: The bottom of the outer wall of the push rod (72) is slidably connected to the blocking plate (12), and the outer wall of the push rod (72) is fixedly connected with blocking blocks (74) above and below the blocking plate (12).

5. The lead-acid battery electrolyte filling device according to claim 1, characterized in that: A scraper assembly (8) is provided at the bottom and below the adding tube (5), the scraper assembly (8) comprising a small ring (82) movably connected to the inside of the bottom tube (663), a ball (83) being rotatably connected to the ring side of the small ring (82), and a plurality of balls (83) being provided, a scraper frame (84) being fixedly connected to the bottom of the small ring (82), the scraper assembly (88) further comprising a small plate (85) fixedly connected to the bottom of the inner wall of the top tube (661), a round shaft (86) being fixedly connected to the bottom of the small plate (85), a mounting frame (87) being fixedly connected to the inner wall of the small ring (82), a threaded groove (88) being provided on the outer wall of the round shaft (86), and a limiting block (89) being fixedly connected to the inner side of the middle portion of the mounting frame (87).

6. The lead-acid battery electrolyte filling device according to claim 5, characterized in that: The scraping assembly (8) further comprises an annular groove (81) formed on the inner wall of the bottom tube (663), and a portion of the ball (83) away from the small ring (82) is located inside the annular groove (81).

7. The lead-acid battery electrolyte filling device according to claim 6, characterized in that: The scraper frame (84) is L-shaped, and the inner side of the bottom of the scraper frame (84) fits the bottom of the bottom tube (663).

8. The lead-acid battery electrolyte filling device according to claim 7, characterized in that: A vertical groove (810) is provided on the outer surface of the circular shaft (86) at the bottom of the thread groove (88), and the vertical groove (810) is communicated with the thread groove (88).

9. The lead-acid battery electrolyte filling device according to claim 1, characterized in that: A flow-blocking assembly (9) is provided at the bottom of the air extraction pipe (16), and the flow-blocking assembly (9) comprises a mounting cover (91) fixedly connected to the bottom of the air extraction pipe (16), a connecting plate (17) fixedly connected to the bottom of the inner wall of the mounting cover (91), a lifting rod (92) slidably connected to the middle part of the connecting plate (17), a buoyancy plate (93) fixedly connected to the bottom of the lifting rod (92), a circular plate (94) fixedly connected to the top of the circular plate (94), and a rubber pad (95) fixedly connected to the top of the circular plate (94).

10. A method for using a lead-acid battery electrolyte filling device, the method being applicable to the latex sponge mattress of any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The battery is placed, the output shaft of the hydraulic cylinder (2) is extended, the bottom of the sealing gasket (13) contacts the top surface of the battery, and the bottom of the sleeve part (66) is inserted into the interior of the battery; S2. The air extraction pipe (16) is evacuated to generate negative pressure inside the acid recovery tank (3) and the storage battery, and the electrolyte inside the liquid tank (4) enters the storage battery.

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