Battery cap testing device

Abstract

A battery cap testing device comprises a fixing base, a testing table is arranged on the upper end face of the fixing base, an air inlet and testing grooves are formed in the top of the testing table, a testing pressing plate is arranged above the testing table, a gas cavity is formed in the testing table, and testing pressing sleeves in one-to-one correspondence with the testing grooves are distributed at the bottom of the testing pressing plate. An inner cavity of the testing pressing sleeve is connected with an air pressure detection meter through a first air pipe, the air inlet and the testing groove are both communicated with the air cavity, the air compressor is connected with the air inlet through a second air pipe, and the first air cylinder controls the testing pressing plate to move downwards till the testing pressing sleeve presses and seals the battery cap on the testing groove. The air compressor provides compressed air for the gas cavity, and the charging mechanism charges the battery cap into the test groove. The air tightness testing device is used for testing the air tightness of the battery cap and is beneficial to improving the testing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of battery caps, and particularly to a battery cap testing device. Background Art

[0002] As one of the components of a lithium battery, after the battery cell is usually installed in the battery steel shell, a battery cap is needed to seal the battery steel shell. Therefore, good airtightness of the battery steel shell is extremely important for the subsequent safe use of the lithium battery. Thus, after the production of the battery cap is completed, it is usually necessary to conduct spot checks on its airtightness. The existing airtightness test of the battery steel shell is troublesome to operate and has low work efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a battery cap testing device, which can effectively solve the technical problems mentioned in the background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A battery cap testing device includes a fixed base. A test bench is arranged on the upper end surface of the fixed base. An air inlet and a test groove are arranged on the top of the test bench. A test pressing plate is arranged above it, and a gas cavity is arranged inside. The bottom of the test pressing plate is distributed with test sleeves corresponding to the test grooves one by one. The inner cavity of the test sleeve is connected to a pressure detection meter through a first air pipe. The air inlet and the test groove are both connected to the gas cavity. An air compressor is connected to the air inlet through a second air pipe. After the first cylinder controls the test pressing plate to move downward until the test sleeve presses and seals the battery cap on the test groove, the air compressor provides compressed air into the gas cavity, and a loading mechanism loads the battery cap into the test groove; The loading mechanism includes a loading bottom plate. Multiple loading holes corresponding to the test slots are distributed on the upper end surface of the loading bottom plate. A loading cylinder is arranged above the loading holes. The loading cavity on the loading cylinder is communicated with the loading holes. A limiting boss is arranged on the side wall of the loading cylinder, and the bottom is connected to the loading bottom plate. A first sliding groove communicated with the loading cavity is opened on the limiting boss. A first pressing block is arranged in the first sliding groove. A sliding plate is arranged at the outer end of the first pressing block. Two rows of compression springs are respectively arranged along the vertical direction on both sides of the sliding plate. The two ends of the compression spring are respectively connected to the sliding plate and the loading cylinder. Both ends of the loading bottom plate are respectively connected to the second sliding side plate through the first positioning block. A second slider is arranged at the bottom of the second sliding side plate, and the second slider slides along the sliding groove. When the loading bottom plate moves to the position where the loading holes correspond to the test slots, the first pressing block is pulled outward to make the first pressing block disengage from the battery cap in the loading cavity. The battery cap moves downward along the loading cavity until the lowermost battery cap enters the loading hole. Then, the first pressing block presses the battery cap in the loading cavity, and at the same time, the material limiting plate at the bottom of the loading hole is opened to make the battery cap in the loading hole be loaded into the test slot.

[0005] Preferably, a second sliding groove communicated with all the loading holes is opened on one side wall of the loading bottom plate. A material limiting plate is arranged in the second sliding groove. A fixed handle is arranged at one end of the material limiting plate.

[0006] Preferably, adjacent two sliding plates are connected through a fixing plate. The side of the first pressing block facing the loading cavity is set as an arc structure so that the first pressing block is in line contact with the battery caps stacked in the loading cavity along the vertical direction. One side of the loading bottom plate is connected to a positioning side plate through a second positioning block. A positioning hole is opened on the positioning side plate. A positioning pin is arranged on one side of the test bench. When the loading bottom plate moves along the sliding groove until the positioning pin is inserted into the positioning hole, the loading holes on the loading bottom plate are aligned with the test slots in the vertical direction. An anti-loosening layer made of rubber material is arranged on the outer surface of the positioning pin.

[0007] Preferably, the first cylinder is installed on the sliding top plate. First sliding side plates are respectively arranged at both ends of the sliding top plate. A first slider is arranged at the bottom of the first sliding side plate. A sliding groove matched with the first slider is opened on the fixed base. Guide bosses are respectively arranged at both ends of the test pressing plate. Guide columns are arranged at the bottom of the sliding top plate, and the lower ends of the guide columns pass through the guide holes on the guide bosses.

[0008] Preferably, when the test pressing sleeves at the bottom of the test pressing plate slide to the positions corresponding to the test slots one by one, the sliding top plate is positioned through the positioning component.

[0009] Preferably, the positioning assembly includes a first positioning plate and a return spring. The first positioning plate is connected to the test bench, and a second positioning plate is arranged above it. The second positioning plate is provided with a first guiding hole and a second guiding hole. One end of the second positioning plate is connected to the test bench. A first guiding rod and a second guiding rod are respectively inserted into the first guiding hole and the second guiding hole. The upper ends of the first guiding rod and the second guiding rod are both connected to a limiting top block. A limiting bottom block is arranged at the bottom of the first guiding rod. A return spring sleeved on the first guiding rod is arranged between the limiting bottom block and the second positioning plate. After the first positioning plate passes through the limiting slot on the limiting cross plate, the lower end of the second guiding rod passes through the second positioning hole on the second positioning plate and then inserts into the first positioning hole on the first positioning plate, and the second guiding rod is attached to the limiting cross plate. The two ends of the limiting cross plate are respectively connected to the first sliding side plate through limiting side plates.

[0010] Preferably, limiting sliding plugs are respectively arranged at both ends of the sliding groove. The limiting sliding plugs are made of rubber materials.

[0011] Preferably, a pressure gauge mounting plate is arranged on one side of the test pressing plate. The air pressure detection gauge is arranged on the pressure gauge mounting plate.

[0012] Preferably, a plurality of test slots are arranged at the top of the test bench. The plurality of test slots are linearly arranged at equal intervals on the test bench.

[0013] Compared with the prior art, the beneficial effects of the present invention are: Slide the loading base plate in the loading mechanism along the sliding groove until the positioning pin on one side of the test bench is inserted into the positioning hole on the positioning side plate. At this time, the loading hole on the loading base plate is aligned with the test groove in the vertical direction. Pull the first pressing block outward so that the first pressing block slides along the first sliding groove on the limiting boss until the first pressing block disengages from the battery cap in the loading cavity. Then, the battery cap moves downward along the loading cavity until the bottommost battery cap enters the loading hole and is supported on the material limiting plate, so as to realize simultaneous feeding of multiple loading cylinders corresponding to the loading holes. After that, release the first pressing block. The first pressing block presses the battery cap in the loading cylinder under the pulling of the compression spring. Then, pull the material limiting plate outward so that the material limiting plate slides along the second sliding groove. When the material limiting plate disengages from the battery cap in the loading hole, the battery caps in multiple loading holes supply materials to the test grooves on the test bench at the same time. After the loading base plate slides along the sliding groove to one side and leaves above the test groove, slide the test pressing plate along the sliding groove with the first sliding side plate. When the first positioning plate passes through the limiting groove on the limiting cross plate, insert the lower end of the second guiding rod through the second positioning hole on the second positioning plate and then into the first positioning hole on the first positioning plate, and the second guiding rod fits on the limiting cross plate, thereby positioning the test pressing plate. At this time, the test pressing sleeves at the bottom of the test pressing plate correspond to the test grooves at the top of the test bench one by one. The first air cylinder controls the test pressing plate to move downward along the guiding column until the test pressing sleeve presses the battery cap tightly and seals it on the test groove. Then, the air compressor supplies compressed air to the gas cavity. When the air pressure detection table detects that there is gas passing through the inner cavity of the test pressing sleeve, it means that the airtightness of the battery cap does not meet the requirements. Description of the Drawings

[0014] Figure 1 is the first perspective view of a battery cap testing device in an embodiment of the present invention; Figure 2 is the second perspective view of a battery cap testing device in an embodiment of the present invention; Figure 3 is the structural schematic diagram of the positioning component in an embodiment of the present invention; Figure 4 is the structural schematic diagram of the loading mechanism in an embodiment of the present invention; In the figure, 1 is a fixed base, 2 is a test bench, 3 is a test groove, 4 is a test pressing plate, 5 is a test pressing sleeve, 6 is a pneumatic pressure gauge, 7 is a first cylinder, 8 is a loading bottom plate, 9 is a loading cylinder, 10 is a limiting boss, 11 is a first pressing block, 12 is a sliding plate, 13 is a compression spring, 14 is a first positioning block, 15 is a second sliding side plate, 16 is a second slider, 17 is a sliding groove, 18 is a material limiting plate, 19 is a pressure gauge mounting plate, 20 is a fixed handle, 21 is a fixed plate, 22 is a second positioning block, 23 is a positioning side plate, 24 is a positioning pin, 25 is a sliding top plate, 26 is a first sliding side plate, 27 is a guiding boss, 28 is a guiding column, 29 is a first positioning plate, 30 is a return spring, 31 is a second positioning plate, 32 is a first guiding rod, 33 is a second guiding rod, 34 is a limiting top block, 35 is a limiting bottom block, 36 is a limiting cross plate, 37 is a limiting groove, and 38 is a limiting side plate. Specific embodiments

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Please refer to Figures 1-4 As shown, a battery cap testing device includes a fixed base 1. A test bench 2 is provided on the upper end surface of the fixed base 1. An air inlet and a test groove 3 are provided on the top of the test bench 2. A test pressing plate 4 is provided above, and a gas cavity is provided inside. The bottom of the test pressing plate 4 is distributed with test pressing sleeves 5 corresponding to the test grooves 3 one by one. The inner cavity of the test pressing sleeve 5 is connected to a pneumatic pressure gauge 6 through a first air pipe. The air inlet and the test groove 3 are both connected to the gas cavity. An air compressor is connected to the air inlet through a second air pipe. After the first cylinder 7 controls the test pressing plate 4 to move downward until the test pressing sleeve 5 presses the battery cap tightly and seals it on the test groove 3, the air compressor provides compressed air into the gas cavity, and a loading mechanism loads the battery cap into the test groove 3; The loading mechanism includes a loading bottom plate 8. Multiple loading holes corresponding to the test slots 3 are distributed on the upper end surface of the loading bottom plate 8. Above the loading holes, there is a loading cylinder 9. The loading cavity on the loading cylinder 9 is communicated with the loading holes. A limiting boss 10 is arranged on the side wall of the loading cylinder 9, and the bottom is connected to the loading bottom plate 8. A first sliding groove communicated with the loading cavity is opened on the limiting boss 10. A first pressing block 11 is arranged in the first sliding groove. A sliding plate 12 is arranged at the outer end of the first pressing block 11. Two rows of compression springs 13 are respectively arranged on both sides of the sliding plate 12 in the vertical direction. The two ends of the compression spring 13 are respectively connected to the sliding plate 12 and the loading cylinder 9. Both ends of the loading bottom plate 8 are respectively connected to a second sliding side plate 15 through a first positioning block 14. A second slider 16 is arranged at the bottom of the second sliding side plate 15. The second slider 16 slides along the sliding groove 17. When the loading bottom plate 8 moves to the position where the loading holes correspond to the test slots 3, the first pressing block 11 is pulled outward so that the first pressing block 11 disengages from the battery cap in the loading cavity. The battery cap moves downward along the loading cavity until the lowermost battery cap enters the loading hole. Then, the first pressing block 11 presses the battery cap in the loading cavity. At the same time, the material limiting plate 18 at the bottom of the loading hole is opened so that the battery cap in the loading hole is loaded into the test slot 3; A second sliding groove communicated with all the loading holes is opened on one side wall of the loading bottom plate 8. A material limiting plate 18 is arranged in the second sliding groove. One end of the material limiting plate 18 is provided with a fixed handle 20; Adjacent two sliding plates 12 are connected through a fixing plate 21. The side of the first pressing block 11 facing the loading cavity is set as an arc structure so that the first pressing block 11 is in line contact with the battery caps stacked in the loading cavity in the vertical direction; One side of the loading bottom plate 8 is connected to a positioning side plate 23 through a second positioning block 22. A positioning hole is opened on the positioning side plate 23. One side of the test bench 2 is provided with a positioning pin 24. When the loading bottom plate 8 moves along the sliding groove 17 until the positioning pin 24 is inserted into the positioning hole, the loading holes on the loading bottom plate 8 are aligned with the test slots 3 in the vertical direction. An anti-loosening layer made of rubber material is arranged on the outer surface of the positioning pin 24; The positioning pin 24 and the positioning hole adopt an interference fit to improve the positioning stability of the loading bottom plate 8; The first cylinder 7 is installed on a sliding top plate 25. First sliding side plates 26 are respectively arranged at both ends of the sliding top plate 25. First sliders are arranged at the bottoms of the first sliding side plates 26. A sliding groove 17 matched with the first sliders is opened on the fixed base 1. Guide bosses 27 are respectively arranged at both ends of the test pressing plate 4. Guide columns 28 are arranged at the bottom of the sliding top plate 25. The lower ends of the guide columns 28 pass through the guide holes on the guide bosses 27; When the test bush 5 at the bottom of the test pressing plate 4 slides to a position corresponding to the test slot 3 one by one, the sliding top plate 25 is positioned by the positioning component; The positioning component includes a first positioning plate 29 and a return spring 30. The first positioning plate 29 is connected to the test bench 2, and a second positioning plate 31 is arranged above it. The second positioning plate 31 is provided with a first guiding hole and a second guiding hole, and one end is connected to the test bench 2. A first guiding rod 32 and a second guiding rod 33 are respectively inserted through the first guiding hole and the second guiding hole. The upper ends of the first guiding rod 32 and the second guiding rod 33 are both connected to a limiting top block 34. A limiting bottom block 35 is arranged at the bottom of the first guiding rod 32. A return spring 30 sleeved on the first guiding rod 32 is arranged between the limiting bottom block 35 and the second positioning plate 31. After the first positioning plate 29 passes through the limiting slot 37 on the limiting cross plate 36, the lower end of the second guiding rod 33 passes through the second positioning hole on the second positioning plate 31 and is inserted into the first positioning hole on the first positioning plate 29, and the second guiding rod 33 is attached to the limiting cross plate 36. The two ends of the limiting cross plate 36 are respectively connected to the first sliding side plate 26 through limiting side plates 38; Limit plugs are respectively arranged at both ends of the sliding slot 17, and the limit plugs are made of rubber material; A pressure gauge mounting plate 19 is arranged on one side of the test pressing plate 4, and the air pressure detection gauge 6 is arranged on the pressure gauge mounting plate 19; A plurality of test slots 3 are arranged on the top of the test bench 2, and the plurality of test slots 3 are linearly arranged at equal intervals on the test bench 2; Slide the loading bottom plate 8 in the loading mechanism along the sliding groove 17 until the positioning pin 24 on one side of the test bench 2 is inserted into the positioning hole on the positioning side plate 23. At this time, the loading hole on the loading bottom plate 8 is aligned with the test groove 3 in the vertical direction. Pull the first pressing block 11 outward so that the first pressing block 11 slides along the first sliding groove on the limiting boss 10 until the first pressing block 11 disengages from the battery cap in the loading cavity. Then, the battery cap moves downward along the loading cavity until the lowermost battery cap enters the loading hole and is supported on the material limiting plate 18, so as to realize simultaneous feeding of multiple loading cylinders 9 into the loading hole. After that, release the first pressing block 11. The first pressing block 11 presses the battery cap in the loading cylinder 9 under the pulling of the compression spring 13. Then, pull the material limiting plate 18 outward so that the material limiting plate 18 slides along the second sliding groove. When the material limiting plate 18 disengages from the battery cap in the loading hole, the battery caps in multiple loading holes simultaneously supply materials to the test groove 3 on the test bench 2. After the loading bottom plate 8 slides along the sliding groove 17 to one side and leaves above the test groove 3, slide the test pressing plate 4 along with the first sliding side plate along the sliding groove 17. When the first positioning plate 29 passes through the limiting groove 37 on the limiting cross plate 36, insert the lower end of the second guiding rod 33 through the second positioning hole on the second positioning plate 31 and then into the first positioning hole on the first positioning plate 29, and the second guiding rod 33 is attached to the limiting cross plate 36, thereby positioning the test pressing plate 4. At this time, the test pressing sleeves 5 at the bottom of the test pressing plate 4 correspond to the test grooves 3 at the top of the test bench 2 one by one. The first air cylinder 7 controls the test pressing plate 4 to move downward along the guiding column 28 until the test pressing sleeves 5 press and seal the battery caps on the test grooves 3. Then, the air compressor supplies compressed air to the gas cavity. When the air pressure detection gauge 6 detects that there is gas passing through the inner cavity of the test pressing sleeve 5, it indicates that the airtightness of the battery cap does not meet the requirements.

[0017] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the structure of the present invention or exceed the scope defined by this claim book, they should fall within the protection scope of the present invention.

Claims

1. A battery cap testing device, comprising a fixed base, characterized in that: A test bench is provided on the upper end surface of the fixed base. An air inlet and a test groove are provided on the top of the test bench. A test pressing plate is provided above, and a gas cavity is provided inside. The bottom of the test pressing plate is distributed with test pressing sleeves corresponding to the test grooves one by one. The inner cavity of the test pressing sleeve is connected to a barometer through a first air pipe. The air inlet and the test groove are both communicated with the gas cavity. An air compressor is connected to the air inlet through a second air pipe. After the first cylinder controls the test pressing plate to move downward until the test pressing sleeve presses the battery cap tightly sealed on the test groove, the air compressor provides compressed air into the gas cavity, and the loading mechanism loads the battery cap into the test groove; The loading mechanism includes a loading bottom plate. A plurality of loading holes corresponding to the test grooves are distributed on the upper end surface of the loading bottom plate. A loading cylinder is provided above the loading hole. The loading cavity on the loading cylinder is communicated with the loading hole. A limiting boss is provided on the side wall of the loading cylinder and is connected to the loading bottom plate at the bottom. A first sliding groove communicated with the loading cavity is opened on the limiting boss. A first pressing block is provided in the first sliding groove. A sliding plate is provided at the outer end of the first pressing block. Two rows of compression springs are respectively arranged on both sides of the sliding plate in the vertical direction. The two ends of the compression spring are respectively connected to the sliding plate and the loading cylinder. Both ends of the loading bottom plate are respectively connected to a second sliding side plate through a first positioning block. A second sliding block is provided at the bottom of the second sliding side plate. The second sliding block slides along the sliding groove. When the loading bottom plate moves to a position where the loading hole corresponds to the test groove, the first pressing block is pulled outward to make the first pressing block separate from the battery cap in the loading cavity. The battery cap moves downward along the loading cavity until the lowermost battery cap enters the loading hole. Then the first pressing block presses the battery cap in the loading cavity. At the same time, the limiting plate at the bottom of the loading hole is opened to load the battery cap in the loading hole into the test groove.

2. The battery cap testing device according to claim 1, wherein: A second sliding groove communicated with all the loading holes is opened on one side wall of the loading bottom plate. A limiting plate is provided in the second sliding groove. A fixed handle is provided at one end of the limiting plate.

3. The battery cap testing device according to claim 1, wherein: Adjacent two sliding plates are connected through a fixing plate. The side of the first pressing block facing the loading cavity is set as an arc structure so that the first pressing block is in line contact with the battery caps stacked in the loading cavity in the vertical direction; One side of the loading bottom plate is connected to a positioning side plate through a second positioning block. A positioning hole is opened on the positioning side plate. A positioning pin is provided on one side of the test bench. When the loading bottom plate moves along the sliding groove until the positioning pin is inserted into the positioning hole, the loading holes on the loading bottom plate are aligned with the test grooves in the vertical direction. An anti-loosening layer made of rubber material is provided on the outer surface of the positioning pin.

4. The battery cap testing device according to claim 1, wherein: The first cylinder is installed on a sliding top plate. First sliding side plates are respectively provided at both ends of the sliding top plate. A first sliding block is provided at the bottom of the first sliding side plate. A sliding groove matched with the first sliding block is opened on the fixed base. Guide bosses are respectively provided at both ends of the test pressing plate. Guide columns are provided at the bottom of the sliding top plate. The lower ends of the guide columns pass through the guide holes on the guide bosses.

5. The battery cap testing device according to claim 4, wherein: When the test bush at the bottom of the test pressing plate slides to a position corresponding to each of the test grooves one by one, the sliding top plate is positioned by the positioning component.

6. The battery cap testing device according to claim 5, wherein: The positioning component includes a first positioning plate and a return spring. The first positioning plate is connected to the test bench, and a second positioning plate is arranged above it. The second positioning plate is provided with a first guiding hole and a second guiding hole. One end of each of them is connected to the test bench. A first guiding rod and a second guiding rod are respectively inserted through the first guiding hole and the second guiding hole. The upper ends of the first guiding rod and the second guiding rod are both connected to a limiting top block. A limiting bottom block is arranged at the bottom of the first guiding rod. A return spring sleeved on the first guiding rod is arranged between the limiting bottom block and the second positioning plate. After the first positioning plate passes through the limiting groove on the limiting cross plate, the lower end of the second guiding rod passes through the second positioning hole on the second positioning plate and then inserts into the first positioning hole on the first positioning plate, and the second guiding rod is in contact with the limiting cross plate. The two ends of the limiting cross plate are respectively connected to the first sliding side plate through limiting side plates.

7. The battery cap testing device according to claim 1, wherein: Limit plugs are respectively arranged at both ends of the sliding groove, and the limit plugs are made of rubber material.

8. A battery cap testing device according to claim 1, characterized in that: A pressure gauge mounting plate is arranged on one side of the test pressing plate, and the air pressure detection gauge is arranged on the pressure gauge mounting plate.

9. The battery cap testing device according to claim 1, wherein: A plurality of test grooves are arranged at the top of the test bench, and the plurality of test grooves are linearly arranged at equal intervals on the test bench.

Images