Storage battery detection liquid sampling device
By designing an automated switching and limiting mechanism, the problem that existing devices cannot adapt to different battery liquid cavity depths is solved, realizing automated sampling and improving sampling efficiency and testing accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG GOLD PRODUCT QUALITY INSPECTION CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-17
AI Technical Summary
Existing battery testing fluid sampling devices cannot adapt to different battery fluid chamber depths, and replacing sampling bottles is time-consuming and labor-intensive, easily contaminating the electrolyte and affecting test results.
A battery testing fluid sampling device was designed, comprising a switching mechanism, a limiting mechanism, and a sampling mechanism. The device uses a motor-driven gear system to extend and retract the sampling tube and rotate the limiting rod, automating the installation and replacement of the sampling bottle and ensuring that the end of the sampling tube is always in the middle layer of the electrolyte, thus achieving automatic sampling.
It enables automatic adjustment of the sampling tube position according to the battery model, simplifies the sampling operation, reduces manual intervention, avoids electrolyte contamination, and improves sampling efficiency and testing accuracy.
Smart Images

Figure CN224136971U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of battery testing, specifically to a battery testing fluid sampling device. Background Technology
[0002] When sampling the battery test fluid, ensure the battery casing is undamaged and there is no electrolyte leakage before opening the battery. For cylindrical batteries, extract the sample from the center; for square batteries, sample from the middle of the electrolyte level. Each sample should be at least 50ml, divided into three sampling bottles for density, conductivity, and pH testing, respectively.
[0003] However, common sampling devices cannot adapt to different battery fluid depths, and the sampling bottle needs to be replaced manually, which is time-consuming, labor-intensive, and prone to contaminating the electrolyte, thus affecting the test results. Therefore, those skilled in the art have provided a battery testing fluid sampling device to solve the problems mentioned in the background art. Utility Model Content
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0005] A battery testing fluid sampling device includes a sampling box, a transparent door hinged to one side of the sampling box, a switching mechanism for changing the position of the sampling bottle installed in the middle of the sampling box, a limiting mechanism for limiting the switching mechanism installed on one side of the bottom of the sampling box, and a sampling mechanism for sampling the battery installed on one side of the top of the sampling box.
[0006] Preferably, the switching mechanism includes a first rotating shaft, the two ends of which are rotatably connected to the two ends inside the sampling box, a first motor is driven and installed at the top of the first rotating shaft, and the end of the first motor is fixedly connected to the top of the sampling box. Two limiting blocks are fixedly installed on the first rotating shaft, and an installation plate is installed between the two limiting blocks.
[0007] Preferably, the top of the mounting plate has three mounting holes evenly spaced, and each of the three mounting holes has a mounting component for mounting a sampling bottle fixedly installed in it, and each of the three mounting components has a limit rod fixedly installed at its bottom.
[0008] Preferably, the limiting mechanism includes a second rotating shaft, which is fixedly installed on one side of the bottom of the sampling box. A limiting component is rotatably installed on the second rotating shaft. A limiting groove is formed on one side of the limiting component, and the diameter of the limiting groove is matched with the diameter of the limiting rod.
[0009] Preferably, the limiting mechanism further includes a mounting block, the bottom end of which is fixedly connected to the bottom end of the sampling box, and a mounting groove is provided on one side of the top end of the mounting block. A first mounting plate is fixedly installed on the top end of the limiting member, and a spring is fixedly installed between the inner side of the mounting groove and the first mounting plate.
[0010] Preferably, the sampling mechanism includes a sampling pump, which is fixedly installed on one side of the top of the sampling box. The output port of the sampling pump is connected to a sample outlet pipe, and the input port of the sampling pump is connected to a connecting pipe. A second mounting plate is fixedly installed at the end of the connecting pipe, and the bottom end of the second mounting plate is fixedly connected to one side of the sampling box.
[0011] Preferably, the sampling mechanism further includes a third mounting plate, one side of which is fixedly connected to the side of the sampling box, and a sampling tube is movably mounted on the top of the third mounting plate. One end of the sampling tube is connected to a retractable threaded tube, and one end of the threaded tube is connected to a connecting tube.
[0012] Preferably, a second motor is fixedly installed on one side of the top of the third mounting plate. The output shaft of the second motor passes through the third mounting plate and drives a drive gear. The outer side of the sampling tube is threaded, and a driven gear is threaded on the sampling tube. The driven gear is rotatably connected to the third mounting plate, and the drive gear and the driven gear are meshed together.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] The sampling bottle is installed in the mounting component through the set switching mechanism, limiting mechanism, and sampling mechanism. Then, the sampling tube is inserted into the electrolyte of the battery. The second motor drives the driven gear through the active gear, which can extend or shorten the sampling tube so that the end of the sampling tube extends into the middle layer of the electrolyte. Then, the first motor drives the mounting plate to rotate, which in turn drives the mounting component and the limiting rod to rotate. When it rotates to a certain position, the limiting rod can be locked into the limiting groove. The first motor can be closed through the transparent box door, so that the sampling bottle installed in the mounting component is aligned with the sampling tube. The sampling pump is driven to take a sample. After the sampling is completed, the first motor can be driven again to make the limiting component rotate on the second rotating shaft and stretch the spring until the limiting rod disengages from the limiting groove and is locked into the limiting groove again, and then another limiting rod is locked into the limiting groove, so that sampling can be performed again. It allows for timely and convenient positioning of the limiting rod, ensuring that the sampling bottle and the sampling tube are aligned for easy sampling; it also allows for the extension or shortening of the sampling tube depending on the battery model, ensuring that the end of the sampling tube is in the middle layer of the electrolyte. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a battery testing fluid sampling device according to an embodiment of this utility model;
[0016] Figure 2 This is a schematic diagram of the transposition mechanism of a battery testing fluid sampling device according to an embodiment of this utility model;
[0017] Figure 3 This is a schematic diagram of the limiting mechanism of a battery testing fluid sampling device according to an embodiment of the present invention;
[0018] Figure 4 This is a schematic diagram of the sampling mechanism of a battery testing fluid sampling device according to an embodiment of the present invention.
[0019] Explanation of reference numerals in the attached drawings: 1. Sampling box; 2. First rotating shaft; 3. First motor; 4. Limiting block; 5. Mounting plate; 6. Mounting hole; 7. Mounting component; 8. Limiting rod; 9. Second rotating shaft; 10. Limiting component; 11. Limiting groove; 12. Mounting block; 13. Mounting groove; 14. First mounting plate; 15. Spring; 16. Sampling pump; 17. Sampling tube; 18. Connecting tube; 19. Second mounting plate; 20. Third mounting plate; 21. Sampling tube; 22. Threaded tube; 23. Second motor; 24. Driving gear; 25. Driven gear. Detailed Implementation
[0020] The present invention will be further described in detail below with reference to embodiments:
[0021] This utility model discloses a battery testing fluid sampling device. (Refer to...) Figure 1-4 The sample box 1 includes a transparent door hinged to one side, a switching mechanism for changing the position of the sampling bottle installed in the middle of the sample box 1, a limiting mechanism for limiting the switching mechanism installed on one side of the bottom of the sample box 1, and a sampling mechanism for sampling the battery installed on one side of the top of the sample box 1.
[0022] By adopting the above technical solution, this utility model, through the setting of a switching mechanism, a limiting mechanism, and a sampling mechanism, installs the sampling bottle in the mounting component 7. Subsequently, the sampling tube 21 is inserted into the electrolyte of the storage battery. Then, the second motor 23 drives the driven gear 25 through the driving gear 24, thereby allowing the sampling tube 21 to extend or shorten, so that the end of the sampling tube 21 extends into the middle layer of the electrolyte. Afterward, the first motor 3 drives the mounting plate 5 to rotate, thereby driving the mounting component 7 and the limiting rod 8 to rotate. When the device rotates to a certain position, the limiting rod 8 can engage with the limiting groove 11, allowing the first motor 3 to be closed through the transparent door. This enables the sampling bottle installed in the mounting component 7 to be aligned with the sampling tube 17, driving the sampling pump 16 to take samples. After sampling, the first motor 3 can be driven again, causing the limiting component 10 to rotate on the second rotating shaft 9 and stretch the spring 15 until the limiting rod 8 disengages from the limiting groove 11, and until another limiting rod 8 engages with the limiting groove 11, allowing for sampling again. This allows for timely and convenient positioning of the limiting rod 8, ensuring the sampling bottle and sampling tube 17 are aligned, thus facilitating sampling. It also allows for the extension or shortening of the sampling tube 21 depending on the battery model, ensuring the end of the sampling tube 21 is in the middle layer of the electrolyte.
[0023] Reference Figure 1-4 The switching mechanism includes a first rotating shaft 2, the two ends of which are rotatably connected to the two ends inside the sampling box 1 respectively. A first motor 3 is driven and installed at the top of the first rotating shaft 2, and the end of the first motor 3 is fixedly connected to the top of the sampling box 1. Two limit blocks 4 are fixedly installed on the first rotating shaft 2, and an installation plate 5 is installed between the two limit blocks 4.
[0024] By adopting the above technical solution, the installation disk 5 allows the sampling bottle on the mounting component 7 to rotate by rotating the installation disk 5, thereby enabling continuous sampling.
[0025] Reference Figure 1-4 The top of the mounting plate 5 has three mounting holes 6 evenly distributed. Each of the three mounting holes 6 has a mounting component 7 for mounting a sampling bottle, and each of the three mounting components 7 has a limit rod 8 fixedly installed at its bottom.
[0026] By adopting the above technical solution, the limiting rod 8 facilitates the rotation of the drive mounting part 7 and the limiting rod 8. When rotated to a certain position, the limiting rod 8 can be inserted into the limiting groove 11, so that the first motor 3 can be closed through the transparent box door, and the sampling bottle installed in the mounting part 7 can be set to correspond with the sample outlet tube 17.
[0027] Reference Figure 1-4The limiting mechanism includes a second rotating shaft 9, which is fixedly installed on one side of the bottom of the sampling box 1. A limiting component 10 is rotatably installed on the second rotating shaft 9. A limiting groove 11 is opened on one side of the limiting component 10, and the diameter of the limiting groove 11 is matched with the diameter of the limiting rod 8.
[0028] By adopting the above technical solution, the limiting member 10 can be used to limit the limiting rod 8 through the limiting groove 11 on the limiting member 10, thereby limiting the limiting rod 8 so that the sampling bottle installed in the mounting part 7 can be set to correspond with the sample outlet tube 17.
[0029] Reference Figure 1-4 The limiting mechanism also includes a mounting block 12, the bottom end of which is fixedly connected to the bottom end of the sampling box 1, and a mounting groove 13 is provided on one side of the top of the mounting block 12. A first mounting plate 14 is fixedly installed on the top of the limiting member 10, and a spring 15 is fixedly installed between the inner side of the mounting groove 13 and the first mounting plate 14.
[0030] By adopting the above technical solution, the spring 15 facilitates the rotation of the limiting member 10 on the second rotating shaft 9 and stretches the spring 15 until the limiting rod 8 is disengaged and stuck in the limiting groove 11. The spring 15 can pull the first mounting plate 14, thereby resetting the limiting member 10 until the other limiting rod 8 is stuck in the limiting groove 11, so that sampling can be performed again.
[0031] Reference Figure 1-4 The sampling mechanism includes a sampling pump 16, which is fixedly installed on one side of the top of the sampling box 1. The output port of the sampling pump 16 is connected to a sampling tube 17, and the input port of the sampling pump 16 is connected to a connecting tube 18. A second mounting plate 19 is fixedly installed at the end of the connecting tube 18, and the bottom end of the second mounting plate 19 is fixedly connected to one side of the sampling box 1.
[0032] By adopting the above technical solution, the sampling pump 16 and the sample outlet tube 17 are set up to facilitate sampling through the sampling pump 16 and output through the sample outlet tube 17, so that the sampled electrolyte can be input into the sampling bottle.
[0033] Reference Figure 1-4 The sampling mechanism also includes a third mounting plate 20. One side of the third mounting plate 20 is fixedly connected to the side of the sampling box 1. A sampling tube 21 is movably installed on the top of the third mounting plate 20, and one end of the sampling tube 21 is connected to a retractable threaded tube 22. One end of the threaded tube 22 is connected to the connecting tube 18.
[0034] By adopting the above technical solution, the threaded tube 22 facilitates the second motor 23 to drive the driven gear 25 through the active gear 24, thereby enabling the sampling tube 21 to extend or shorten, so that the end of the sampling tube 21 extends into the middle layer of the electrolyte. During this process, the threaded tube 22 can extend and retract with the sampling tube 21, thereby ensuring the connection between the threaded tube 22 and the sampling tube 21.
[0035] Reference Figure 1-4 A second motor 23 is fixedly installed on one side of the top of the third mounting plate 20. The output shaft of the second motor 23 passes through the third mounting plate 20 and drives the drive gear 24. The outer side of the sampling tube 21 is threaded, and the driven gear 25 is threaded on the sampling tube 21. The driven gear 25 is rotatably connected to the third mounting plate 20, and the drive gear 24 and the driven gear 25 are meshed.
[0036] By adopting the above technical solution, the second motor 23 can drive the driven gear 25 through the active gear 24, thereby allowing the sampling tube 21 to extend or shorten, so that the end of the sampling tube 21 extends into the middle layer of the electrolyte.
[0037] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A battery detection liquid sampling device comprising a sampling case (1), characterized in that: A transparent door is installed on one side of the sampling box (1) via a hinge. A switching mechanism for changing the position of the sampling bottle is installed in the middle of the inside of the sampling box (1). A limiting mechanism for limiting the switching mechanism is installed on one side of the bottom of the sampling box (1). A sampling mechanism for sampling the battery is installed on one side of the top of the sampling box (1).
2. The battery testing fluid sampling device of claim 1, wherein: The switching mechanism includes a first rotating shaft (2), the two ends of the first rotating shaft (2) are rotatably connected to the two ends inside the sampling box (1), the top end of the first rotating shaft (2) is driven and installed with a first motor (3), and the end of the first motor (3) is fixedly connected to the top end of the sampling box (1). Two limiting blocks (4) are fixedly installed on the first rotating shaft (2), and an installation plate (5) is installed between the two limiting blocks (4).
3. The battery testing fluid sampling device of claim 2, wherein: The top of the mounting plate (5) is provided with three mounting holes (6) evenly distributed. Each of the three mounting holes (6) is fixedly installed with a mounting component (7) for mounting a sampling bottle, and each of the three mounting components (7) is fixedly installed with a limit rod (8) at the bottom.
4. The battery testing fluid sampling device of claim 3, wherein: The limiting mechanism includes a second rotating shaft (9), which is fixedly installed on one side of the bottom end of the sampling box (1). A limiting member (10) is rotatably installed on the second rotating shaft (9). A limiting groove (11) is opened on one side of the limiting member (10), and the diameter of the limiting groove (11) is matched with the diameter of the limiting rod (8).
5. The battery testing fluid sampling device of claim 4, wherein: The limiting mechanism also includes a mounting block (12), the bottom end of which is fixedly connected to the bottom end of the sampling box (1), and a mounting groove (13) is provided on one side of the top of the mounting block (12). A first mounting plate (14) is fixedly installed on the top of the limiting member (10), and a spring (15) is fixedly installed between the inner side of the mounting groove (13) and the first mounting plate (14).
6. The battery testing fluid sampling device according to claim 1, characterized in that: The sampling mechanism includes a sampling pump (16), which is fixedly installed on one side of the top of the sampling box (1). The output port of the sampling pump (16) is connected to a sample outlet pipe (17), and the input port of the sampling pump (16) is connected to a connecting pipe (18). A second mounting plate (19) is fixedly installed at the end of the connecting pipe (18), and the bottom end of the second mounting plate (19) is fixedly connected to one side of the sampling box (1).
7. The battery testing fluid sampling device of claim 6, wherein: The sampling mechanism also includes a third mounting plate (20), one side of which is fixedly connected to the side of the sampling box (1). A sampling tube (21) is movably installed on the top of the third mounting plate (20), and one end of the sampling tube (21) is connected to a retractable threaded tube (22). One end of the threaded tube (22) is connected to a connecting tube (18).
8. The battery testing fluid sampling device of claim 7, wherein: A second motor (23) is fixedly installed on one side of the top of the third mounting plate (20). The output shaft of the second motor (23) passes through the third mounting plate (20) and drives the installation of a drive gear (24). The outer side of the sampling tube (21) is provided with threads, and a driven gear (25) is threaded on the sampling tube (21). The driven gear (25) is rotatably connected to the third mounting plate (20), and the drive gear (24) and the driven gear (25) are meshed together.