An acid filling device for a lead-acid battery

Abstract

The utility model discloses a kind of for lead-acid battery's pickling device, including pickling cylinder, pickling cylinder is equipped with pickling bin, the top of pickling cylinder is equipped with pickling mouth, the bottom wall of pickling bin is evenly equipped with six through acid delivery ports, the bottom wall of pickling bin is connected with bottom disc, six through acid discharge ports are evenly equipped on bottom disc, each acid delivery port and each acid discharge port one-to-one, the bottom surface of each acid delivery port is blocked by horizontally movable baffle, the center of the bottom wall of pickling bin is rotatably connected with rotating shaft, each baffle is connected with rotating shaft, when rotating shaft rotates, baffle can block or unblock acid delivery port. When acid is delivered to battery, six single-cell structures are used in one acid barrel, ensure that each single-cell pickling uniform consistency, ensure that battery single-cell performance consistency, ensure battery life, and the device can also accurately and conveniently adjust pickling amount according to different battery models and specifications.

Description

Technical Field

[0001] This utility model relates to the technical field of lead-acid battery acid filling equipment, and in particular to an acid filling device for lead-acid batteries. Background Technology

[0002] Lead-acid batteries, as a mature electrochemical energy storage device, occupy an important position in fields such as automotive starting power supplies and industrial energy storage systems due to their advantages of low cost, mature technology, and stable high-current discharge performance. However, with the rapid development of new energy and other clean energy industries and increasingly stringent environmental protection requirements, the optimization of lead-acid battery processes, especially the optimization of key processes, has become an important breakthrough direction for improving lead-acid battery performance, reducing production costs, and achieving green manufacturing. The acid filling process, as a core link in lead-acid battery production, directly affects the battery's capacity, cycle life, and consistency.

[0003] Currently, the commonly used acid filling method is a one-to-one (acid tank) (battery cell) structure. The acid level is sensed by an electronic sensor, which then adjusts the acid filling amount of the six acid tanks one by one. Therefore, the uniformity of the acid filling amount of the six cells depends on the accuracy of the sensor. When used for a long time, the accuracy of the sensor decreases, which can easily cause uneven acid filling in the battery cells. This will affect the consistency of the performance of the battery cells and also affect the service life of the battery. Summary of the Invention

[0004] The purpose of this invention is to provide an acid filling device for lead-acid batteries. When supplying acid to the battery, it adopts a one-acid-tank-to-six-cell structure. Compared with the existing one-acid-tank-to-one-cell structure, this ensures the uniformity of acid filling to each cell, the consistency of battery cell performance, and the battery life. Moreover, this device can also make precise and convenient adjustments to the amount of acid filling according to different battery models and specifications.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides an acid filling device for lead-acid batteries, including an acid filling cylinder, an acid filling chamber inside the acid filling cylinder, an acid filling port on the top of the acid filling cylinder, six acid delivery ports evenly distributed circumferentially on the bottom wall of the acid filling chamber, the bottom wall of the acid filling chamber being connected to a chassis, and six acid discharge ports evenly distributed circumferentially on the chassis, each acid delivery port and each acid discharge port corresponding one-to-one, the bottom surface of each acid delivery port being sealed by a horizontally movable baffle, a rotating shaft being rotatably connected to the center of the bottom wall of the acid filling chamber, each baffle being connected to the rotating shaft, and the rotating shaft being able to seal or release the baffles on the acid delivery ports when rotating.

[0007] Preferably, the bottom wall of the acid filling chamber is provided with six positioning grooves evenly distributed around the perimeter, the acid delivery port is located in the positioning groove, and each baffle is engaged in the corresponding positioning groove, so that each baffle is fixed in the vertical direction and can move in the horizontal direction.

[0008] Preferably, one end of the traction rope is connected to the side of each baffle closest to the rotating shaft, and the other end of the traction rope is connected to a take-up / release device. The take-up / release device is fixed to the rotating shaft, and when the rotating shaft rotates, the traction rope can be taken up or released through the take-up / release device.

[0009] Preferably, a spring is sleeved on the outer side of the traction rope, one end of the spring is fixed to the baffle, and the other end of the spring is fixed to the reel / unelder.

[0010] Preferably, a turntable is fixedly sleeved on the outer side of the rotating shaft, and the take-up and unwind device is fixed to the outer side wall of the turntable.

[0011] Preferably, a flow meter is fixed on the top of the cylinder, and a first through hole is provided on the top of the cylinder. The flow meter passes through the first through hole and is fixedly inserted into the top of the cylinder by a fixing block.

[0012] Preferably, the acid filling chamber is coaxially arranged with the acid filling cylinder, the opening of the acid filling chamber is lower than the top of the acid filling cylinder, the acid filling chamber wall divides the acid filling cylinder into the acid filling chamber and the overflow chamber, and valves are symmetrically provided on the bottom wall of the overflow chamber.

[0013] Preferably, the upper part of the opening end of the acid filling tank wall is provided with a circumferential annular groove, the annular groove contains an acid-blocking cylinder, the upper opening of the acid-blocking cylinder is provided with a protruding edge, the protruding edge is fixed to a shaft, and one end of the shaft is provided with a limiting cap.

[0014] Preferably, the top of the cylinder is movably connected to a movable rod, the top of the cylinder is provided with a first elongated hole along the diameter direction of the acid filling cylinder, the upper end of the movable rod passes through the first elongated hole and protrudes from the top of the cylinder, the middle part of the movable rod is provided with a positioning hole, and the shaft passes through the positioning hole.

[0015] Preferably, the lower end of the moving rod is provided with a protruding plate, and the outer wall of the acid filling chamber is provided with a plurality of grooves, the protruding plate being able to be engaged in the grooves.

[0016] The present invention achieves the following beneficial technical effects compared to the prior art:

[0017] 1. The acid-filling device for lead-acid batteries provided by this utility model, when the rotating shaft rotates, will drive the turntable to rotate. When the turntable rotates, the take-up and unwind device will take in the traction rope. The traction rope will continuously wind onto the take-up and unwind device, reducing the length of the traction rope that is exposed. At the same time, the traction rope will pull the baffle to move in the direction of the rotating shaft. Simultaneously, the spring is compressed, and the baffle no longer blocks the acid inlet. Acid will flow out through the acid inlet. Since the positions of the acid outlet and the acid inlet are one-to-one, the acid in the acid inlet will flow downward to the acid outlet, thereby realizing the acid filling of the battery. After the acid filling is completed, the rotating shaft is reversed. At this time, the take-up and unwind device will unwind the traction rope. Due to the compression force of the spring, the baffle will be pushed back to its original position, thereby sealing the acid inlet. This acid filling device, when supplying acid to each cell of the battery, uses six identical acid inlets at the bottom of the acid filling chamber, employing a one-acid-tank-to-six-cell structure. Compared to the existing one-acid-tank-to-one-cell structure, this ensures uniform acid filling to each cell, avoids differences in the amount of acid filling between cells, guarantees battery lifespan, and ensures consistent performance of each battery cell.

[0018] 2. The acid filling device for lead-acid batteries provided by this utility model allows the operator to move the upper part of the moving rod away from the axis of the acid filling chamber within the first elongated hole when a larger amount of acid needs to be added. Simultaneously, the middle part of the moving rod will move away from the axis of the acid filling chamber on the shaft, and the protruding plate will disengage from the groove. The operator can then pull the moving rod upwards, which will cause the acid-blocking cylinder to move upwards. By referring to the flow meter, the operator can pull the moving rod to the required flow rate, at which point the acid-blocking cylinder will stop moving upwards. The operator can then move the upper part of the moving rod closer to the axis of the acid filling chamber within the first elongated hole, at which point the protruding plate will engage in the corresponding groove. This achieves adjustable acid flow rate, allowing for precise adjustment of the acid filling amount according to different battery models and specifications. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the acid filling device for lead-acid batteries in this utility model.

[0020] Figure 2 This is a partial exploded structural diagram of the acid filling device for lead-acid batteries in this utility model.

[0021] Figure 3 This is an exploded structural diagram of another part of the acid filling device for lead-acid batteries in this utility model;

[0022] Figure 4 This is a partial structural schematic diagram of the acid filling device for lead-acid batteries in this utility model.

[0023] In the diagram: 1-Acid filling cylinder, 2-Acid filling chamber, 3-Acid filling port, 4-Bottom wall, 5-Positioning groove, 6-Acid delivery port, 7-Baffle, 8-Rotating shaft, 9-Turntable, 10-Traction rope, 11-Rope take-up and release device, 12-Spring, 13-Connecting block, 14-Base, 15-Acid discharge port, 16-Flow meter, 17-Cylinder top, 18-First through hole, 19-Fixing block, 20-Overflow acid chamber, 21-Valve, 22-Acid filling chamber wall, 23-Annular groove, 24-Acid baffle cylinder, 25-Protruding edge, 26-Shaft rod, 27-Limit cap, 28-Moving rod, 29-First elongated hole, 30-Positioning hole, 31-Protruding plate, 32-Groove. Detailed Implementation

[0024] This invention provides an acid-filling device for lead-acid batteries. This device is based on Torricelli's law, which states that if identical circular holes are evenly distributed at the bottom of a horizontally placed container, and the external influences on the liquid flowing from each hole are identical, then the flow velocity of the liquid flowing from each hole will be the same. Specifically, Torricelli's law describes that the velocity v of the liquid flowing from the circular holes at the bottom of the container is equal to the velocity of a liquid particle falling freely from the liquid surface to the height of the hole, which can be mathematically described as: v 2 = 2gh, where: g is the acceleration due to gravity, and h is the vertical height from the liquid surface to the orifice. Since the orifice of each circular hole is at the same depth, the height h of the liquid surface from the orifice is the same, therefore the flow velocity v of the liquid flowing out of each circular hole is the same. Furthermore, the volumetric flow rate Q of the liquid flowing out of each circular hole is described by the formula: Q = A·v, where A is the orifice area, and v is the velocity of the liquid flowing out of the circular hole. Since the orifice area A of each circular hole is the same, the flow velocity v of the liquid flowing out of each circular hole is also the same, so the volumetric flow rate Q of each circular hole is the same.

[0025] In this embodiment, as Figures 1-3 As shown, this acid filling device includes an acid filling cylinder 1, inside which is an acid filling chamber 2. The acid filling chamber 2 is coaxially arranged with the acid filling cylinder 1, and the bottoms of the acid filling chamber 2 and the acid filling cylinder 1 are shared. An acid filling port 3 is provided at the center of the top 17 of the acid filling cylinder 1, and acid is poured into the acid filling chamber 2 through the acid filling port 3. Six positioning grooves 5 are evenly opened circumferentially on the bottom wall 4 of the acid filling chamber 2. Each positioning groove 5 has a through acid delivery port 6 in the same position. Since automotive batteries usually have six cells, each acid delivery port 6 delivers acid to each cell of the battery accordingly.

[0026] Each positioning slot 5 is fitted with a baffle 7, which is fixed vertically but movable horizontally. When the baffle 7 moves horizontally, it can seal or unseal the bottom surface of each acid inlet 6. When the baffle 7 seals the acid inlet 6, the acid in the acid filling tank 2 will no longer flow out; when the baffle 7 unseals the acid inlet 6, the acid flows out. According to Torricelli's law, the height of the acid level from each acid inlet 6 to the acid filling tank 2 is the same, so the flow velocity of the acid in each acid inlet 6 is the same. Furthermore, because the orifice area of ​​each acid inlet 6 is also the same, the volumetric flow rate of the acid flowing out of each acid inlet 6 is the same. This ensures the uniformity of acid filling in each cell of the battery.

[0027] A rotating shaft 8 is rotatably connected to the center of the bottom wall 4 of the acid filling tank 2. A turntable 9 is fixedly sleeved on the outside of the rotating shaft 8. One end of a traction rope 10 is connected to the side of each baffle 7 closest to the rotating shaft 8, and the other end of the traction rope 10 is connected to a take-up / release device 11. The take-up / release device 11 is fixed to the outer wall of the turntable 9. When the rotating shaft 8 rotates, the traction rope 10 can take up or release the rope through the take-up / release device 11. A spring 12 is sleeved on the outside of the traction rope 10. One end of the spring 12 is fixed to the baffle 7, and the other end of the spring 12 is fixed to the take-up / release device 11. The bottom wall 4 of the acid filling tank 2 is connected to the chassis 14 through a connecting block 13. The rotating shaft 8 passes through the center of the chassis 14. The chassis 14 has six through-holes 15 evenly arranged circumferentially, with each acid inlet 6 corresponding to each acid outlet 15.

[0028] Specifically, when the rotating shaft 8 rotates, it drives the turntable 9 to rotate. The turntable 9 rotates, causing the take-up / unwinder 11 to take in the traction rope 10. The traction rope 10 continuously winds around the take-up / unwinder 11, shortening the exposed length of the traction rope 10. Simultaneously, the traction rope 10 pulls the baffle 7 towards the rotating shaft 8. At the same time, the spring 12 is compressed, and the baffle 7 no longer blocks the acid inlet 6, allowing acid to flow out through it. Since the acid outlet 15 corresponds to the acid inlet 6, the acid in the acid inlet 6 flows downwards to the acid outlet 15, thus filling the battery with acid. After the acid filling is complete, the rotating shaft 8 is reversed. The take-up / unwinder 11 then unwinds the traction rope 10. Due to the compression force of the spring 12, the baffle 7 resets, sealing the acid inlet 6. This acid filling device, when supplying acid to each cell of the battery, uses six identical acid inlets 6 at the bottom of the acid filling chamber 2, adopting a one-acid-tank-to-six-cell structure. Compared with the existing one-acid-tank-to-one-cell structure, this ensures the uniformity of acid filling to each cell, avoids the difference in acid filling amount between each cell, guarantees the battery's service life, and ensures the consistency of battery cell performance.

[0029] A flow meter 16 is fixed to the top 17 of the cylinder. A first through hole 18 is provided on the top 17. The flow meter 16 passes through the first through hole 18 and is fixedly inserted into the top 17 of the cylinder via a fixing block 19. The flow meter 16 allows for precise control of the acid filling volume. The opening of the acid filling chamber 2 is lower than the top 17 of the acid filling cylinder 1. The acid filling chamber wall 22 of the acid filling chamber 2 divides the acid filling cylinder 1 into the acid filling chamber 2 and the overflow chamber 20. When the operator sets the acid filling volume according to requirements, they will open the control valve 21 of the acid storage device, allowing the acid to flow into the acid filling chamber 2. Since acid still flows into the acid filling chamber 2 when the valve 21 is closed, and the acid filling chamber 2 only stores the set acid filling volume, the remaining acid will overflow into the overflow chamber 20. This further ensures the accuracy of the acid filling volume delivered to the battery. Valves 21 are symmetrically provided on the bottom wall 4 of the overflow chamber 20 to facilitate the recycling of the acid in the overflow chamber 20.

[0030] In this embodiment, the acid filling chamber 2 is also connected to the acid volume adjustment component. Specifically, the upper part of the opening end of the acid filling chamber wall 22 is provided with a circumferential annular groove 23, and an acid-blocking cylinder 24 is placed inside the annular groove 23. When it is necessary to increase the acid filling volume, the acid-blocking cylinder 24 can be moved upward, and the increase in the height of the acid-blocking cylinder 24 will increase the capacity of the acid filling chamber 2. In this embodiment, the upper opening of the acid-blocking cylinder 24 is provided with a protruding edge 25, which is fixed to a shaft 26. One end of the shaft 26 is provided with a limiting cap 27. The top of the cylinder 17 is movably connected to a movable rod 28. The top of the cylinder 17 has a first elongated hole 29 along the diameter direction of the acid filling cylinder 1. The upper end of the movable rod 28 passes through the first elongated hole 29 and protrudes from the top of the cylinder 17, so as to facilitate the operator to hold the movable rod 28 and allow the movable rod 28 to move horizontally along the axis of the acid filling tank 2, and also to move up and down. The middle part of the movable rod 28 has a positioning hole 30, and the shaft 26 passes through the positioning hole 30, so that the movable rod 28 can move on the shaft 26. The limiting cap 27 limits the horizontal movement of the movable rod 28. The lower end of the movable rod 28 has a protruding plate 31. The outer wall of the acid filling tank 2 has several grooves 32, and the protruding plate 31 can be engaged in the grooves 32. Specifically, in its natural state, the protrusion 31 on the moving rod 28 is engaged in the groove 32. When it is necessary to increase the acid filling volume, the operator can move the upper part of the moving rod 28 away from the axis of the acid filling chamber 2 in the first elongated hole 29. At the same time, the middle part of the moving rod 28 will move away from the axis of the acid filling chamber 2 on the shaft 26. Simultaneously, the protrusion 31 will disengage from the groove 32. The operator can then pull the moving rod 28 upward. The upward movement of the moving rod 28 will cause the acid-blocking cylinder 24 to move upward. By referring to the flow meter 16, the operator can pull the moving rod 28 to the required flow value, and the acid-blocking cylinder 24 will no longer move upward. The operator can then move the upper part of the moving rod 28 closer to the axis of the acid filling chamber 2 in the first elongated hole 29. At this time, the protrusion 31 will be engaged in the corresponding groove 32. This achieves the adjustability of the acid flow rate, and the acid filling volume can be precisely adjusted according to different battery models and specifications.

[0031] The acid filling device for lead-acid batteries provided by this utility model, in specific application, first moves the moving rod 28 away from the axis of the acid filling chamber 2, so that the protrusion 31 on the moving rod 28 disengages from the groove 32. Then, the moving rod 28 is moved upward, and the moving rod 28 drives the acid-blocking cylinder 24 to move upward in the annular groove 23. When the moving rod 28 reaches the specified value on the flow meter 16, the moving rod 28 is moved closer to the axis of the acid filling chamber 2, and the protrusion 31 is engaged in the corresponding groove 32 again. At this time, the acid is poured into the acid filling chamber 2 through the acid filling port 3. When the acid reaches the set value, the acid filling is stopped. At this time, the acid discharge port 15 is connected to each cell of the battery. The rotating shaft 8 is rotated. The rotation of the rotating shaft 8 will cause the take-up and release device 11 to take up the traction rope 10, thereby pulling the baffle 7 to move toward the rotating shaft 8, so that the baffle 7 no longer blocks the acid supply port 6. The acid will flow through the acid supply port 6 into the acid discharge port 15, and then into each cell of the battery.

[0032] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An acid filling device for a lead-acid battery comprising an acid filling cartridge, characterised in that: The acid filling cylinder is equipped with an acid filling chamber. The top of the acid filling cylinder is equipped with an acid filling port. The bottom wall of the acid filling chamber is evenly provided with six through-holes in the circumferential direction. The bottom wall of the acid filling chamber is connected to the base plate. The base plate is evenly provided with six through-holes in the circumferential direction. Each of the acid filling ports and each of the acid discharging ports corresponds one-to-one. The bottom surface of each acid filling port is sealed by a horizontally movable baffle. The center of the bottom wall of the acid filling chamber is rotatably connected to a rotating shaft. Each baffle is connected to the rotating shaft. When the rotating shaft rotates, it can cause the baffle to seal or unseal the acid filling port.

2. An acid filling device for a lead-acid battery as claimed in claim 1, characterised in that: The bottom wall of the acid filling chamber is evenly provided with six positioning slots on the circumferential direction. The acid delivery port is located in the positioning slot. Each baffle is engaged in the corresponding positioning slot, so that each baffle is fixed in the vertical direction and can move in the horizontal direction.

3. A lead acid battery acid filling apparatus as claimed in claim 2, characterised in that: Each of the baffles is connected to one end of a traction rope on the side closest to the rotating shaft, and the other end of the traction rope is connected to a take-up / release device. The take-up / release device is fixed to the rotating shaft, and when the rotating shaft rotates, the traction rope can be taken up or released through the take-up / release device.

4. An acid filling device for a lead-acid battery as claimed in claim 3, characterised in that: A spring is fitted around the outside of the traction rope. One end of the spring is fixed to a baffle, and the other end of the spring is fixed to the reel / unelder.

5. An acid filling device for a lead-acid battery as claimed in claim 4, characterised in that: A turntable is fixedly sleeved on the outer side of the rotating shaft, and the take-up and give-down device is fixed to the outer wall of the turntable.

6. An acid filling device for a lead-acid battery as defined in claim 1, characterized in that: A flow meter is fixed on the top of the cylinder. A first through hole is provided on the top of the cylinder. The flow meter passes through the first through hole and is fixedly inserted into the top of the cylinder by a fixing block.

7. An acid filling device for a lead-acid battery as defined in claim 1, characterized in that: The acid filling chamber is coaxially arranged with the acid filling cylinder. The opening of the acid filling chamber is lower than the top of the acid filling cylinder. The acid filling chamber wall divides the acid filling cylinder into the acid filling chamber and the overflow chamber. Valves are symmetrically arranged on the bottom wall of the overflow chamber.

8. An acid filling device for a lead-acid battery as claimed in claim 7, characterised in that: The upper part of the opening end of the acid filling chamber wall is provided with a circumferential annular groove, and an acid-blocking cylinder is placed inside the annular groove. The upper opening of the acid-blocking cylinder is provided with a protruding edge, which is fixed to a shaft. One end of the shaft is provided with a limiting cap.

9. An acid filling device for a lead-acid battery as claimed in claim 8, characterised in that: The top of the cylinder is movably connected to a movable rod. The top of the cylinder has a first elongated hole along the diameter direction of the acid filling cylinder. The upper end of the movable rod passes through the first elongated hole and protrudes from the top of the cylinder. The middle part of the movable rod has a positioning hole, and the shaft passes through the positioning hole.

10. An acid filling device for a lead-acid battery as claimed in claim 9, characterised in that: The lower end of the moving rod is provided with a protruding plate, and the outer wall of the acid filling chamber is provided with several grooves, and the protruding plate can be engaged in the grooves.

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