CN211452749U - Lithium battery sealing cover sealing performance detection device - Google Patents
Lithium battery sealing cover sealing performance detection device Download PDFInfo
- Publication number
- CN211452749U CN211452749U CN201921932152.XU CN201921932152U CN211452749U CN 211452749 U CN211452749 U CN 211452749U CN 201921932152 U CN201921932152 U CN 201921932152U CN 211452749 U CN211452749 U CN 211452749U
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- Prior art keywords
- sealing
- pressure plate
- lithium battery
- moving mechanism
- vacuum box
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- 238000007789 sealing Methods 0.000 title claims abstract description 61
- 238000001514 detection method Methods 0.000 title claims abstract description 48
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 24
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 239000007789 gas Substances 0.000 claims description 24
- 239000001307 helium Substances 0.000 claims description 7
- 229910052734 helium Inorganic materials 0.000 claims description 7
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 7
- 239000003550 marker Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 206010016766 flatulence Diseases 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The embodiment of the utility model discloses a device for detecting the sealing performance of a sealing cover of a lithium battery, which comprises a vacuum box, a sealing pressure plate, a moving mechanism, a vacuum pump, a gas supply mechanism and a leak detector; a workpiece placing area is arranged in the vacuum box, the sealing pressure plate is arranged in the vacuum box and connected with the moving mechanism, and the moving mechanism can drive the sealing pressure plate to move towards the workpiece placing area; the sealing pressure plate is provided with a leakage detection channel and a channel outlet communicated with the leakage detection channel; the vacuum pump, the gas supply mechanism and the leak detector are communicated to the leak detection channel; the gas supply mechanism can feed identification gas into the leak detection channel. The utility model discloses a sealed lid leakproofness detection device of lithium cell simple structure, convenient operation, detection efficiency is high.
Description
Technical Field
The utility model relates to a lithium cell seals lid leakproofness detection device.
Background
The lithium battery is a primary battery using lithium metal or lithium alloy as a negative electrode material and using a non-aqueous electrolyte solution, unlike a lithium ion battery, which is a rechargeable battery, and a lithium ion polymer battery. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. The lithium cell includes sealed lid and casing, and the sealed lid sealing performance of lithium cell is good easily leads to lithium cell tympanites, increases lithium cell explosion risk. The prior art does not have special equipment for detecting the sealing performance of the sealing cover.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the embodiment of the utility model discloses a lithium battery sealing cover tightness detection device, which comprises a vacuum box, a sealing pressure plate, a moving mechanism, a vacuum pump, a gas supply mechanism and a leak detector; a workpiece placing area is arranged in the vacuum box, the sealing pressure plate is arranged in the vacuum box and connected with the moving mechanism, and the moving mechanism can drive the sealing pressure plate to move towards the workpiece placing area; the sealing pressure plate is provided with a leakage detection channel and a channel outlet communicated with the leakage detection channel; the vacuum pump, the gas supply mechanism and the leak detector are communicated to the leak detection channel; the gas supply mechanism can feed identification gas into the leak detection channel.
As a further improvement of the embodiment of the utility model, the moving mechanism is including driving actuating cylinder, drive actuating cylinder's piston rod with sealing plate is fixed, in order to drive sealing plate to the work piece is placed the district and is close to or is kept away from.
As a further improvement of the embodiment of the present invention, the moving mechanism further includes a guide mounting plate and a guide post, the guide mounting plate is fixed to the end of the piston rod of the driving cylinder, the guide post is disposed beside the workpiece placing area, and the guide post passes through the guide mounting plate; the sealing pressure plate is fixed with the guide mounting plate.
As a further improvement of the embodiment of the present invention, the identification gas is helium.
As a further improvement of the embodiment of the present invention, the vacuum pump communicates to the vacuum box and can be right the vacuum box is vacuumized.
As the utility model discloses the further improvement still includes the positioning seat, the positioning seat sets up the district is placed to the work piece, the positioning seat is provided with the constant head tank so that place the work piece.
The utility model discloses a sealed lid leakproofness detection device of lithium cell simple structure, convenient operation, detection efficiency is high.
For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
Referring to fig. 1, an embodiment of the present invention discloses a device for detecting the sealing performance of a sealing cover of a lithium battery, which includes a vacuum box 100, a sealing pressure plate 200, a moving mechanism, a vacuum pump 400, a gas supply mechanism 500, a leak detector 600, and a positioning seat 110; a workpiece 700 placing area is arranged in the vacuum box 100, the sealing pressure plate 200 is connected with the moving mechanism, and the moving mechanism can drive the sealing pressure plate 200 to move towards the workpiece 700 placing area; the sealing pressure plate 200 is provided with a leak detection channel 210 and a channel outlet 220 communicated with the leak detection channel 210; the vacuum pump 400, the gas supply mechanism 500, and the leak detector 600 are communicated to the leak detection passage 210. The workpiece 700 is vacuumized and filled with the identification gas through the leak detection channel 210, the identification gas is removed from the surface of the workpiece 700, then the workpiece 700 is placed into the vacuum box 100, and the concentration of the identification gas in the leak detection channel 210 is detected through the leak detector 600, so that whether the workpiece 700 leaks gas or not is judged, and the leak detection process is quick and simple and has low labor intensity.
The vacuum box 100 is provided with a cover body, and the workpiece 700 is put in or taken out by opening and closing the cover body.
In this embodiment, the moving mechanism is fixed in the vacuum chamber 100 by a bracket. In other embodiments, the moving mechanism may be partially disposed outside the vacuum box 100, and the sealing platen 200 is moved only by the connecting rod extending into the vacuum box 100.
In this embodiment, the moving mechanism includes a driving cylinder 310, a guiding mounting plate 320, and a guiding post 330, and a piston rod of the driving cylinder 310 is fixed to the sealing pressure plate 200 to drive the sealing pressure plate 200 to move toward or away from the workpiece 700 placement area. The guide mounting plate 320 is fixed with the end of the piston rod of the driving cylinder 310, the guide post 330 is arranged beside the workpiece 700 placing area, and the guide post 330 penetrates through the guide mounting plate 320; the sealing pressure plate 200 is fixed to the guide mounting plate 320. In this embodiment, the workpiece 700 placement area is disposed at the bottom surface inside the vacuum chamber 100, the guide posts 330 are disposed perpendicular to the workpiece 700 placement area, the driving cylinder 310 is located above the workpiece 700 placement area, through holes are disposed at four corners of the guide mounting plate 320, the four guide posts 330 respectively penetrate through the four through holes of the guide mounting plate 320, the end of the piston rod of the driving cylinder 310 is fixed to the guide mounting plate 320, and the bottom of the guide mounting plate 320 is fixed to the sealing pressing plate 200. In other embodiments, the moving mechanism can be replaced by a mode of an oil cylinder, a motor, a worm gear, and the like.
In this embodiment, the plurality of channel outlets 220 of the sealing platen 200 are provided at the bottom, the inlet of the leak detection channel 210 is provided at the side of the sealing platen 200, and the inlet of the leak detection channel 210 is connected to the vacuum pump 400, the gas supply mechanism 500, and the leak detector 600 through pipes. In this embodiment, the marker gas is helium, and in other embodiments, the marker gas may also be other inert gases.
In this embodiment, the vacuum pump 400 is connected to the vacuum box 100 and can vacuumize the vacuum box 100. In addition, the vacuum pump 400 may evacuate the leak detection channel 210 without the sealing platen 200 contacting the workpiece 700, thereby evacuating the vacuum chamber 100.
In this embodiment, the positioning seat 110 is disposed in the workpiece 700 placing area, and the positioning seat 110 is provided with a positioning groove 111 for placing the workpiece 700. The positioning grooves 111 are arranged in parallel so that a plurality of workpieces 700 are placed in the workpiece 700 placement area in parallel with each other.
The utility model discloses a sealed lid leakproofness detection device of lithium cell simple structure, convenient operation, detection efficiency is high.
The utility model also discloses a lithium cell sealing lid leakproofness detection method who uses according to above-mentioned detection device, including following step: s1) placing the workpiece 700 in the vacuum box 100; s2) the moving mechanism drives the sealing pressure plate 200 to press the workpiece 700, and the channel outlet 220 of the leakage detection channel 210 of the sealing pressure plate 200 is pressed on the surface of the workpiece 700; s3) the vacuum pump 400 vacuumizes the leak detection channel 210 until reaching a set vacuum degree; s4) the gas supply mechanism 500 fills the mark gas into the leakage detection channel 210 until the air pressure in the leakage detection channel 210 reaches a set value; s5) taking out the workpiece 700 and performing a cleaning process on the surface of the workpiece 700; s6) the workpiece 700 is put into the vacuum box 100 and the workpiece 700 is pressed in accordance with step S2, and the vacuum box 100 and the leak detection passage 210 are evacuated, and the leak detector 600 detects the leak detection passage 210.
In this embodiment, in the above detection method, the moving mechanism is a driving cylinder 310, a piston rod of the driving cylinder 310 is fixed to the sealing platen 200, and the positioning seat 110 for placing the workpiece 700 is disposed in the vacuum box 100.
When the workpiece 700 is detected, firstly, the workpiece 700 is mounted on the positioning seat 110, then the vacuum box 100 is closed, the piston rod of the driving cylinder 310 extends out, so that the guide mounting plate 320 drives the sealing pressure plate 200 to move downwards, the channel outlet 220 of the sealing pressure plate 200 is clamped on the top surface of the sealing cover workpiece 700, and the workpiece 700 is positioned and clamped. The vacuum pump 400 then evacuates the vacuum box 100 and leak detection channel 210 until a specified vacuum level is reached. Then, the gas supply mechanism 500 fills the leak detection passage 210 with helium gas under high pressure, and after a certain time, the piston rod of the driving cylinder 310 is retracted, and then the vacuum box 100 is opened to take out the workpiece 700. The workpiece 700 enters a leak detection step after being purified, the workpiece 700 is placed back into the vacuum box 100, the workpiece 700 is compressed by the sealing pressure plate 200, the channel outlet 220 is compressed on the top surface of the workpiece 700, then the leak detection channel 210 and the vacuum box 100 are pumped, if the workpiece 700 has a leak hole, gas in the workpiece 700 can be forced to flow out by using pressure difference, then the leak detection channel 210 is subjected to helium concentration detection by using the leak detector 600, and if the helium concentration detected by the leak detector 600 exceeds a set value, the workpiece 700 is judged to have the leak hole.
In the cleaning process of the workpiece 700, a method of flushing with dry nitrogen or the like, or a method of removing helium adsorbed on the outer surface of the workpiece 700 by a standing method, or the like may be employed.
A plurality of workpieces 700 can be installed and placed on the positioning seat 110, so that the detection device can detect a plurality of workpieces 700 at the same time, and the production efficiency is improved.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting of the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.
Claims (6)
1. The utility model provides a lithium battery sealing cover leakproofness detection device which characterized in that: the device comprises a vacuum box, a sealing pressure plate, a moving mechanism, a vacuum pump, a gas supply mechanism and a leak detector; a workpiece placing area is arranged in the vacuum box, the sealing pressure plate is arranged in the vacuum box and connected with the moving mechanism, and the moving mechanism can drive the sealing pressure plate to move towards the workpiece placing area; the sealing pressure plate is provided with a leakage detection channel and a channel outlet communicated with the leakage detection channel; the vacuum pump, the gas supply mechanism and the leak detector are communicated to the leak detection channel; the gas supply mechanism can feed identification gas into the leak detection channel.
2. The device for detecting the sealing performance of the sealing cover of the lithium battery as claimed in claim 1, wherein: the moving mechanism comprises a driving cylinder, and a piston rod of the driving cylinder is fixed with the sealing pressure plate so as to drive the sealing pressure plate to be close to or far away from the workpiece placing area.
3. The device for detecting the sealing performance of the sealing cover of the lithium battery as claimed in claim 2, wherein: the moving mechanism further comprises a guide mounting plate and a guide post, the guide mounting plate is fixed with the end part of the piston rod of the driving cylinder, the guide post is arranged beside the workpiece placing area, and the guide post penetrates through the guide mounting plate; the sealing pressure plate is fixed with the guide mounting plate.
4. The device for detecting the sealing performance of the sealing cover of the lithium battery as claimed in claim 1, wherein: the marker gas is helium.
5. The device for detecting the sealing performance of the sealing cover of the lithium battery as claimed in claim 1, wherein: the vacuum pump is communicated to the vacuum box and can vacuumize the vacuum box.
6. The device for detecting the sealing performance of the sealing cover of the lithium battery as claimed in claim 1, wherein: still include the positioning seat, the positioning seat sets up the district is placed to the work piece, the positioning seat is provided with the constant head tank so that place the work piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921932152.XU CN211452749U (en) | 2019-11-08 | 2019-11-08 | Lithium battery sealing cover sealing performance detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921932152.XU CN211452749U (en) | 2019-11-08 | 2019-11-08 | Lithium battery sealing cover sealing performance detection device |
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| Publication Number | Publication Date |
|---|---|
| CN211452749U true CN211452749U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921932152.XU Active CN211452749U (en) | 2019-11-08 | 2019-11-08 | Lithium battery sealing cover sealing performance detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954275A (en) * | 2019-11-08 | 2020-04-03 | 广州新龙浩工业设备有限公司 | A lithium battery sealing cover sealing detection device and detection method |
| CN113804363A (en) * | 2021-10-14 | 2021-12-17 | 湖南兴旭能新能源科技有限公司 | Lithium ion battery leak detection device |
-
2019
- 2019-11-08 CN CN201921932152.XU patent/CN211452749U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954275A (en) * | 2019-11-08 | 2020-04-03 | 广州新龙浩工业设备有限公司 | A lithium battery sealing cover sealing detection device and detection method |
| CN110954275B (en) * | 2019-11-08 | 2024-11-26 | 广州新龙浩工业设备有限公司 | A lithium battery sealing cover sealing detection device and detection method |
| CN113804363A (en) * | 2021-10-14 | 2021-12-17 | 湖南兴旭能新能源科技有限公司 | Lithium ion battery leak detection device |
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