A liquid level inspection device for liquid batteries

By designing a tilting device and a lifting cylinder drive structure for liquid battery level inspection equipment, the problems of efficiency and accuracy in testing batteries conforming to EN and JIS standards were solved, enabling rapid and accurate level detection to meet the needs of large-scale production.

CN224437651UActive Publication Date: 2026-06-30YUASA BATTERY (SHUNDE) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YUASA BATTERY (SHUNDE) CO LTD
Filing Date
2025-06-17
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing methods for detecting the liquid level in liquid lead-acid batteries are cumbersome, time-consuming, and lack stability in manual operation when faced with design differences between EN and JIS specifications, making it difficult to meet the high-efficiency and accurate testing requirements for large-scale production.

Method used

A liquid battery level inspection device was designed, which adopts an automatic tilting structure driven by a tilting device and a lifting cylinder. The tilting plate pushes the battery to align the liquid level with the scale line, realizing non-contact inspection without removing the liquid outlet plug or inserting a measuring fixture.

Benefits of technology

It significantly improves detection efficiency, reduces workload, enhances detection accuracy and reliability, avoids human error and electrolyte contamination risks, and meets the high-speed requirements of production lines.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a liquid level inspection device for liquid batteries, including a frame, a conveyor roller conveyor, and a tilting device. The conveyor roller conveyor is mounted on the frame and includes multiple conveyor rollers. The tilting device includes a lifting cylinder and a tilting plate. The top of the tilting plate is tilted, and the lifting cylinder is located below the conveyor roller conveyor. The bottom of the tilting plate is connected to the piston rod of the lifting cylinder. The tilting plate is located between two adjacent conveyor rollers, and a baffle is provided on one side of the conveyor roller conveyor. When the liquid level of the battery needs to be checked, the piston rod of the lifting cylinder extends, pushing the tilting plate upward, causing the top of the tilting plate to tilt the battery that has been conveyed to the position by the conveyor roller conveyor. By adjusting the tilt angle of the top of the tilting plate, different types of batteries can be accommodated. The liquid level of the tilted battery can be visually observed, allowing operators to quickly determine whether the liquid level meets the requirements without the need to insert special measuring fixtures, greatly improving inspection efficiency and reducing the workload during inspection.
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Description

Technical Field

[0001] This utility model relates to a battery testing device, and more particularly to a device for checking the liquid level of a liquid battery. Background Technology

[0002] In the production process of liquid lead-acid batteries, accurate detection of the liquid level is a crucial step in ensuring battery performance and safety. However, existing liquid level detection methods suffer from significant efficiency and accuracy issues when dealing with design differences between EN and JIS standard batteries.

[0003] EN-standard liquid lead-acid batteries are typically shorter than their JIS-standard counterparts. To maintain the same electrolyte capacity, their upper level is not located at the usual graduation mark on the side wall of the battery cell, but rather near the middle cover, making it impossible to visually observe the electrolyte level. Current testing methods require unscrewing the top cap and inserting a specialized measuring fixture, a cumbersome and time-consuming process that is unsuitable for the full inspection requirements of large-scale production. Furthermore, while manually tilting the battery to align the electrolyte level with the graduation mark can aid observation, manual operation lacks stability and is prone to introducing errors, affecting the consistency and reliability of the testing. Utility Model Content

[0004] The purpose of this invention is to provide a liquid level inspection device for a liquid battery that can solve at least one of the above problems.

[0005] According to one aspect of the present invention, a liquid level inspection device for a liquid battery is provided, comprising a frame, a conveyor roller conveyor, and a tilting device. The conveyor roller conveyor is mounted on the frame and includes multiple conveyor rollers. The tilting device includes a lifting cylinder and a tilting plate. The top of the tilting plate is tilted. The lifting cylinder is located below the conveyor roller conveyor. The bottom of the tilting plate is connected to the piston rod of the lifting cylinder. The tilting plate is located between two adjacent conveyor rollers. A baffle is provided on one side of the conveyor roller conveyor.

[0006] The beneficial effects of this utility model are as follows: By providing a tilting device, when the battery liquid level needs to be checked, the piston rod of the lifting cylinder extends and pushes the tilting plate upward, so that the top of the tilting plate pushes the battery conveyed to the position by the conveyor roller to tilt. By adjusting the tilting angle of the top of the tilting plate, different batteries can be used, so that the liquid level of the tilted battery can be seen intuitively, making it easy for operators to quickly judge whether the liquid level meets the requirements, without the need to insert a special measuring fixture, which greatly improves the detection efficiency and reduces the workload during detection.

[0007] In some embodiments, a liquid level inspection device for a liquid battery further includes a mounting frame with a mounting plate. A lifting cylinder is fixed to the mounting plate, and the mounting frame is located below the conveyor roller conveyor. Thus, the mounting frame and mounting plate facilitate the installation of the lifting cylinder.

[0008] In some embodiments, the tilting device further includes a connecting plate and a base plate. The connecting plate is fixed above the base plate, and the base plate is connected to the piston rod of the lifting cylinder. The bottom end of the tilting plate is fixed to the connecting plate. Thus, by providing a connecting plate and a base plate, it is convenient to connect the tilting plate to the piston rod of the lifting cylinder.

[0009] In some embodiments, there are multiple inclined plates, each located between two adjacent conveyor rollers. Therefore, by using multiple inclined plates, it is convenient to provide stable support for the inclined plates and to tilt them smoothly.

[0010] In some embodiments, a liquid level inspection device for a liquid battery further includes a guide rod and a guide sleeve. The guide sleeve is fixed to a mounting plate, and the guide rod passes through the guide sleeve and is fixed to the bottom end of the base plate. The guide rod is arranged parallel to the piston rod of the lifting cylinder. Therefore, by providing the guide rod, the smooth lifting and lowering of the base plate can be improved, thereby achieving smooth lifting and lowering of the tilting plate.

[0011] In some embodiments, a liquid level inspection device for a liquid battery further includes a floating joint, through which the piston rod of the lifting cylinder is connected to the bottom end of the base plate. Thus, by providing a floating joint, the connection between the lifting cylinder and the base plate is facilitated.

[0012] In some implementations, the baffle is inclined. This baffle limits the side of the battery when it is tilted, preventing it from slipping off the conveyor rollers. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of a liquid level inspection device for liquid batteries according to this utility model;

[0014] Figure 2 This is a schematic diagram of the inclined plate not extending upwards in a liquid level inspection device for a liquid battery according to this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of a liquid level inspection device for a liquid battery, where the inclined plate acts upward on the battery. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Reference Figures 1-3A liquid level inspection device for liquid batteries includes a frame 1, a conveyor roller conveyor 2, and a tilting device 3. The conveyor roller conveyor 2 is mounted on the frame 1 and includes multiple conveyor rollers 21. The tilting device 3 includes a lifting cylinder 31 and a tilting plate 32. The top of the tilting plate 32 is tilted. The lifting cylinder 31 is located below the conveyor roller conveyor 2. The bottom of the tilting plate 32 is connected to the piston rod of the lifting cylinder 31. The tilting plate 32 is located between two adjacent conveyor rollers 21. A baffle 5 is provided on one side of the conveyor roller conveyor 2. The baffle 5 is tilted and fixed to the frame 1 by bolts, located on one side of the conveyor roller conveyor 2.

[0018] When the liquid level of the liquid battery is checked, the battery is conveyed on the conveyor roller. When the battery is conveyed above the tilting device 3, the piston rod of the lifting cylinder 31 extends and pushes the tilting plate 32 to move upward, so that the top of the tilting plate 32 exceeds the upper end surface of the conveyor roller 2. Thus, the top of the tilting plate 32 pushes the battery to tilt, so that the liquid level in the battery tilts, making it easier to observe the liquid level in the battery.

[0019] In practical use, because EN-standard liquid lead-acid batteries are typically shorter than their JIS-standard counterparts—meaning the liquid level is lower and below the standard battery tank markings—a tilting plate 32 is used to tilt the battery and adjust the liquid level for easy and direct observation. To quickly determine if the battery liquid level meets requirements, the tilt angle of the top surface of the tilting plate 32 can be adjusted so that the highest point of the liquid level aligns with the battery tank markings when tilted, facilitating rapid operator assessment. Simultaneously, the baffle 5 abuts against the side wall of the tilted battery, limiting its movement and preventing it from falling off the conveyor rollers 2.

[0020] Therefore, by tilting the battery using the tilting device 3, the battery liquid level becomes clearly visible, significantly improving inspection efficiency. Driven by an automatic tilting structure driven by a lifting cylinder, a single operation can complete the liquid level check in just 3-5 seconds, compared to existing inspection methods which take 30 seconds per operation, increasing efficiency by 6-10 times and fully meeting the high-speed requirements of the production line's full inspection. Specifically addressing the challenge of liquid level observation when the inner cover of EN-specification batteries is obstructed, it achieves a "stop-and-inspect" assembly line operation mode, enabling non-contact liquid level detection. The accuracy is significantly improved compared to manual tilting inspection, effectively avoiding human error. The non-insertion inspection method offers significant advantages; this non-contact inspection method eliminates the need to disassemble or install the liquid outlet plug or insert measuring fixtures, thus preventing electrolyte contamination risks and eliminating liquid level disturbance errors caused by fixture insertion in traditional methods, resulting in more accurate and reliable test results.

[0021] The liquid level inspection device for liquid batteries of this utility model also includes a mounting frame 4, on which a mounting plate 41 is provided. The cylinder body of the lifting cylinder 31 is fixed to the mounting plate 41 by screws. The mounting frame 4 is located below the conveyor roller 2.

[0022] The tilting device 3 also includes a connecting plate 33 and a base plate 34. The connecting plate 33 is fixed above the base plate 34, and the base plate 34 is connected to the piston rod of the lifting cylinder 31. The bottom end of the tilting plate 32 is fixed to the connecting plate 33. The two ends of the connecting plate 33 can be fixed to the base plate 34 by means of knob plungers or bolts. A threaded hole is provided at the bottom end of the tilting plate 32 to facilitate the connection between the tilting plate 32 and the connecting plate 33 by screws.

[0023] There are multiple inclined plates 32, each located between two adjacent conveyor rollers 21. The multiple inclined plates 32 facilitate stable and convenient application to the battery. When the battery fluid level needs to be checked, each inclined plate 32 moves upward under the action of the lifting cylinder 31, with the top of the inclined plate 32 extending beyond the top of the conveyor roller 2, causing the battery to tilt for easy fluid level detection. After the fluid level check is completed, the piston rod of the lifting cylinder 31 pulls back, causing the inclined plate 32 to descend below the conveyor roller 2, and the battery falls back onto the conveyor roller, facilitating normal battery transport.

[0024] The liquid level inspection device for a liquid battery of this utility model also includes a guide rod 6 and a guide sleeve 7. The guide sleeve 7 is fixed on the mounting plate 41, and the guide rod 6 passes through the guide sleeve 7 and is fixed to the bottom end of the base plate 34. The guide rod 6 is arranged parallel to the piston rod of the lifting cylinder 31. By providing the guide rod 6, the stability of the lifting cylinder 31 driving the tilting plate 32 to rise and fall can be improved.

[0025] A liquid level inspection device for a liquid battery also includes a floating connector 8, through which the piston rod of the lifting cylinder 31 is connected to the bottom end of the base plate 34. Thus, the floating connector 8 further improves the stability of the lifting cylinder 31 driving the tilting plate 32 to rise and fall, thereby keeping the battery stable and improving the accuracy of the liquid level inspection.

[0026] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A device for checking the liquid level of a liquid battery, characterized in that, The system includes a frame (1), a conveyor roller conveyor (2), and a tilting device (3). The conveyor roller conveyor (2) is mounted on the frame (1) and includes multiple conveyor rollers (21). The tilting device (3) includes a lifting cylinder (31) and a tilting plate (32). The top of the tilting plate (32) is tilted. The lifting cylinder (31) is located below the conveyor roller conveyor (2). The bottom of the tilting plate (32) is connected to the piston rod of the lifting cylinder (31). The tilting plate (32) is located between two adjacent conveyor rollers (21). A baffle (5) is provided on one side of the conveyor roller conveyor (2).

2. The liquid level inspection device for a liquid battery according to claim 1, characterized in that, It also includes a mounting frame (4), on which a mounting plate (41) is provided, and the lifting cylinder (31) is fixed on the mounting plate (41). The mounting frame (4) is located below the conveyor roller (2).

3. The liquid level inspection device for a liquid battery according to claim 2, characterized in that, The tilting device (3) also includes a connecting plate (33) and a base plate (34). The connecting plate (33) is fixed above the base plate (34). The base plate (34) is connected to the piston rod of the lifting cylinder (31). The bottom end of the tilting plate (32) is fixed on the connecting plate (33).

4. The liquid level inspection device for a liquid battery according to claim 3, characterized in that, The inclined plate (32) consists of multiple pieces, and each inclined plate (32) is located between two adjacent conveying rollers (21).

5. A liquid level inspection device for a liquid battery according to claim 3 or 4, characterized in that, It also includes a guide rod (6) and a guide sleeve (7). The guide sleeve (7) is fixed on the mounting plate (41). The guide rod (6) passes through the guide sleeve (7) and is fixed to the bottom end of the base plate (34). The guide rod (6) is arranged parallel to the piston rod of the lifting cylinder (31).

6. The liquid level inspection device for a liquid battery according to claim 5, characterized in that, It also includes a floating joint (8), through which the piston rod of the lifting cylinder (31) is connected to the bottom end of the base plate (34).

7. The liquid level inspection device for a liquid battery according to claim 1, characterized in that, The baffle (5) is set at an angle.