CN202066650U - Air-tightness detection device for flexible packaged battery core - Google Patents

Air-tightness detection device for flexible packaged battery core Download PDF

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Publication number
CN202066650U
CN202066650U CN2011200652454U CN201120065245U CN202066650U CN 202066650 U CN202066650 U CN 202066650U CN 2011200652454 U CN2011200652454 U CN 2011200652454U CN 201120065245 U CN201120065245 U CN 201120065245U CN 202066650 U CN202066650 U CN 202066650U
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CN
China
Prior art keywords
detection device
flexible packaging
electricity core
tightness detection
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2011200652454U
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Chinese (zh)
Inventor
胡海波
何东铭
倪学明
王彦平
李�真
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningde Amperex Technology Ltd
Dongguan Amperex Electronics Technology Ltd
Dongguan Amperex Technology Ltd
Amperex Technology Ltd
Original Assignee
Ningde Amperex Technology Ltd
Dongguan Amperex Electronics Technology Ltd
Dongguan Amperex Technology Ltd
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Application filed by Ningde Amperex Technology Ltd, Dongguan Amperex Electronics Technology Ltd, Dongguan Amperex Technology Ltd filed Critical Ningde Amperex Technology Ltd
Priority to CN2011200652454U priority Critical patent/CN202066650U/en
Application granted granted Critical
Publication of CN202066650U publication Critical patent/CN202066650U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses an air-tightness detection device for a flexible packaged battery core, which comprises an enclosed cavity, an enclosed container, an air tube, an air valve and a vacuum source, wherein the enclosed container is at least perspective partially; the air tube is hermetically connected with the enclosed cavity; the air valve is arranged in the center of the air tube and can adjust the vacuum degree in the enclosed cavity; and the vacuum source is hermetically connected with one end of the enclosed cavity away from the air tube. The air-tightness detection device for the flexible packaged battery core has high resolution ratio, can realize the real-time online detection, has a simple structure, and is easy to implement.

Description

Flexible packaging electricity core air-tightness detection device
Technical field
The utility model belongs to field of batteries, and more particularly, the utility model relates to a kind of flexible packaging electricity core air-tightness detection device.
Background technology
The sealing property of flexible packaging electricity core is most important for the normal use of battery, up to now, has disclosed the bubble-tight detection method of multiple flexible packaging electricity core in the prior art: for example, and visual method and high temperature, the soaked method of high humidity.
Though visual method is convenient and swift, resolution is lower, has the erroneous judgement of larger proportion.High temperature, the soaked method of high humidity belong to destructive test, and be limited to the directive significance of Working Procedure Controlling.
In order to overcome the deficiency of above-mentioned flexible packaging electricity core sealing property detecting method, disclosed a kind of detection method of flexible packing products air tightness in the Chinese invention patent application CN 200610062506.0 of application on September 7th, 2006, this method is mainly by placing closed container to charge into detection gas (helium) flexible packing products or battery, vacuumize after again product to be measured or battery being placed another closed container, can judge the impermeability of flexible packing products to be measured or battery by detected characteristics gas (helium) concentration.
Though the bubble-tight detection method of above-mentioned flexible packaging electricity core can be carried out high-precision test to the impermeability of flexible packaging electricity core, the whole detection device more complicated, inconvenient operation is difficult for realizing that online in real time detects.
In view of this, but the necessary flexible packaging electricity core air-tightness detection device that provides a kind of easy online in real time to detect.
The utility model content
The purpose of this utility model is: but the flexible packaging electricity core air-tightness detection device that provides a kind of easy online in real time to detect.
To achieve these goals, the utility model provides a kind of flexible packaging electricity core air-tightness detection device, it comprises the tracheae that is provided with closed cavity and the airtight container that can partly have an X-rayed at least, is tightly connected with closed cavity, the air valve that is arranged at the vacuum tightness in trachea centre and the scalable closed cavity, and is sealedly connected on the vacuum source of tracheae away from closed cavity one end.
As a kind of improvement of the utility model flexible packaging electricity core air-tightness detection device, described airtight container comprises pad and the seal closure that is sealingly fastened on the pad.
As a kind of improvement of the utility model flexible packaging electricity core air-tightness detection device, described seal closure is made by transparent material.
As a kind of improvement of the utility model flexible packaging electricity core air-tightness detection device, described seal closure is made by opaque material, and described seal closure is provided with at least one form.
As a kind of improvement of the utility model flexible packaging electricity core air-tightness detection device, described seal closure is fastened on the described pad by means of the self gravitation sealing, and forms closed cavity.
As a kind of improvement of the utility model flexible packaging electricity core air-tightness detection device, described seal closure is fastened on the pad by means of the external force that is applied thereto, and forms closed cavity.
As a kind of improvement of the utility model flexible packaging electricity core air-tightness detection device, described pad is to be made by rubber or silica gel material.
As a kind of improvement of the utility model flexible packaging electricity core air-tightness detection device, described seal closure is provided with pore, and described tracheae connects described closed cavity through port sealing.
As a kind of improvement of the utility model flexible packaging electricity core air-tightness detection device, described vacuum source can provide 0 ~-vacuum tightness of 200kpa.
As a kind of improvement of the utility model flexible packaging electricity core air-tightness detection device, the vacuum tightness range of adjustment of described air valve is 0 ~-200kpa.
With respect to prior art, the utility model flexible packaging electricity core air-tightness detection device has the following advantages at least: 1) resolution height; 2) nondestructive test can realize that real-time online detects; 3) simple in structure, be easy to realize.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model flexible packaging electricity core air-tightness detection device and useful technique effect thereof are elaborated.
Fig. 1 is the structural representation of the utility model flexible packaging electricity core air-tightness detection device.
Embodiment
The utility model flexible packaging electricity core air-tightness detection device has utilized the characteristic that exists inside and outside the packaging bag of flexible packaging electricity core pressure differential and packaging bag to be easy to deformation, the air-tightness detection device that places a negative pressure when encapsulating the last time (be less than or equal to flexible packaging electricity core vacuum tightness) and normal pressure (atmospheric pressure of there and then) to replace in flexible packaging electricity core to be detected.The good flexible packaging of impermeability electricity core (being designated hereinafter simply as I class electricity core) is because of its air pressure inside keeps the constant negative pressure state, when external pressure changes, and its volume no change.(the packaging bag breakage that causes as pin hole, position, angle breakage etc. of the bad flexible packaging of impermeability electricity core, be designated hereinafter simply as II class electricity core) communicate with the air-tightness detection device internal environment because of it is inner, when the air-tightness detection device internal gas pressure changes, the packaging bag internal gas pressure also can respective change, and " expand (thickness swelling is greater than 5%), shrink " behavior appears in flexible packaging electricity core.According to the different behaviors of flexible packaging electricity core in air-tightness detection device, I class electricity core and II class electricity core can be sorted out, reach the purpose that impermeability detects.
See also shown in Figure 1, the utility model flexible packaging electricity core air-tightness detection device comprises the tracheae 30 that is provided with closed cavity and the airtight container that can partly have an X-rayed at least, is tightly connected with closed cavity, the air valve 40 that is arranged at the vacuum tightness in tracheae 30 central authorities and the scalable closed cavity, and is sealedly connected on the vacuum source 50 of tracheae 30 away from closed cavity one end.
In illustrated embodiment, airtight container comprises pad 10 and the seal closure 20 that is sealingly fastened on the pad 10.Pad 10 is by providing good bubble-tight material to make, after seal closure 20 is fastened on the pad 10, and pad 10 and the seal closure 20 common closed cavities that form a sealing.According to a preferred implementation of the present utility model, pad 10 is to be made by rubber or silica gel material.
Seal closure 20 sealings are fastened on the pad 10, can have good bubble-tight closed cavity with pad 10 one of common formation.In illustrated embodiment, seal closure 20 is a hollow rectangular parallelepiped of being made by glass material, still, and according to other embodiments of the present utility model, seal closure 20 also can become other arbitrary shapes, as long as energy and the pad 10 common closed cavities that form sealing.In addition, seal closure 20 also can whole be made by other visual material, and perhaps, though seal closure 20 is to be made by not visible material, leaving can be for the form of observing.
Be provided with a pore 60 around the closed cavity that encloses jointly by pad 10 and seal closure 20, be sealedly connected with tracheae 30 on the pore 60.In illustrated embodiment, pore 60 is arranged at the top of seal closure 20, but, according to other embodiments of the present utility model, pore 60 also can be arranged at other positions of seal closure 20, perhaps be arranged at any position on the pad 10, be tightly connected as long as can guarantee pore 60 places and tracheae 30.
Pore 60 places are sealedly connected with tracheae 30, and the appropriate location of tracheae 30 central authorities is provided with air valve 40, and air valve 40 can be 0 ~-regulate vacuum tightness in the 200kp scope, in order to control with regulate pressure in the closed cavity.
Tracheae 30 is sealedly attached on the vacuum source 50 away from an end of pore 60, vacuum source 50 with can provide 0 ~-vacuum tightness of 200kpa.
The utility model flexible packaging electricity core air-tightness detection device is assembled successively by synoptic diagram shown in Figure 1 and is finished, after finishing, assembling to guarantee the leakproofness of whole flexible packaging electricity core air-tightness detection device, especially junction of pad 10 and seal closure 20, pore 60 and tracheae 30 junctions, air valve 40 and tracheae 30 junctions, and the sealing of tracheae 30 and vacuum source 50 junctions.
It is as follows to use the utility model flexible packaging electricity core air-tightness detection device to detect the bubble-tight process of flexible packaging electricity core.
Step 1) is set air valve 40, and making closed condition vacuum tightness is 0, and opening vacuum tightness is A Pascal, and wherein, A is-certain certain value between the 2M to 0.Air valve 40 is placed closed condition, at this moment, is normal pressure in the air-tightness detection device.
Step 2) mentions seal closure 20, flexible packaging to be checked electricity core 70 is put into the closed cavity that seal closure 20 and pad 10 surround jointly.Seal closure 20 places on the pad 10 by deadweight, if the deadweight of seal closure 20 is not enough, top that can also self sealss cover 20 applies external force downwards, seal closure 20 bottom margins is formed with pad 10 well contact.
Step 3) is opened air valve 40 and was kept for 1 ~ 10 second, and at this moment, the vacuum tightness in the air-tightness detection device is A Pascal; Then, pass gas check valve 40 also kept for 1 ~ 10 second, and at this moment, the vacuum tightness in the air-tightness detection device device is 0.
Step 4) repetitive operation step 3) twice is observed the state of flexible packaging to be measured electricity core 70 simultaneously, as " expansions " " contraction " " expansion " " contraction " behavior occurring, judges that then the leakproofness of the electric core 70 of flexible packaging is bad; As above-mentioned behavior does not appear, judge that then flexible packaging electricity core 70 is the qualified electric core of leakproofness.
In order to check the utility model flexible packaging electricity core air-tightness detection device to detect the reliability of performance, specially make the flexible packaging electricity core that 10pcs has pin hole (pinhole aperture is about 10 μ m), sneak in the normal flexible packaging electricity core of making of 40pcs.With the utility model flexible packaging electricity core air-tightness detection device above-mentioned 50pcs flexible packaging electricity core is examined entirely.At first, set vacuum tightness in the seal closure and be-90+/-5kpa; Then, carry out the air tightness test step, finally detected 12 II class electricity cores and 38 I class electricity cores.Right through electric core encoding ratio, this 12pcsII class electricity in-core comprises the flexible packaging electricity core that has pin hole of above-mentioned 10pcs crime of willfully making or propagating computer viruses and other destructive programs.(be designated as X1, hot and humid test is done with above-mentioned 38pcsI class electricity core in the back that X2) keeps a record under similarity condition, test the electric core X1 in back, and gas has appearred significantly rising in X2, and the leakproofness test result of all the other 38pcs I class electricity cores is qualified with all the other 2 II class electricity cores.
Actual test result shows: the utility model flexible packaging electricity core air-tightness detection device can be chosen the II class electricity core that the tradition range estimation is missed.Detect with tradition range estimation and not note abnormalities but utilize the utility model flexible packaging electricity core air-tightness detection device to detect the electric core that is judged to II class electricity core, in 3 to 8 weeks, the flatulence corrosion phenomenon all occurs, illustrate that the more traditional visual inspection of resolution of the utility model flexible packaging electricity core air-tightness detection device method of inspection has obvious lifting; In addition, the utility model flexible packaging electricity core air-tightness detection device and method of testing belong to nondestructive test, can implant in the manufacturing process of flexible packaging electricity core, realize online detection.
Be understandable that, only provided the part embodiment of the utility model flexible packaging electricity core air-tightness detection device in this instructions.According to other embodiments of the present utility model, the size of flexible packaging electricity core air-tightness detection device can be adjusted according to the quantity of detected sample; In order to realize detecting simultaneously the purpose of a plurality of detected samples, can also place stacked support in the closed cavity of the utility model flexible packaging electricity core air-tightness detection device; Seal closure 20 can be made by any material, as long as have perspective function; Pad 10 can be any smooth surface and have certain plastic material with tight function to make; The effect of pore 60 is gas passages, and its position is not limited by synoptic diagram.
According to above-mentioned principle, the utility model can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.In addition, although used some specific terms in this instructions, these terms do not constitute any restriction to the utility model just for convenience of description.

Claims (10)

1. flexible packaging electricity core air-tightness detection device, it is characterized in that: described flexible packaging electricity core air-tightness detection device comprises the tracheae that is provided with closed cavity and the airtight container that can partly have an X-rayed at least, is tightly connected with closed cavity, the air valve that is arranged at the vacuum tightness in trachea centre and the scalable closed cavity, and is sealedly connected on the vacuum source of tracheae away from closed cavity one end.
2. flexible packaging electricity core air-tightness detection device according to claim 1, it is characterized in that: described airtight container comprises pad and the seal closure that is sealingly fastened on the pad.
3. flexible packaging electricity core air-tightness detection device according to claim 2, it is characterized in that: described seal closure is made by transparent material.
4. flexible packaging electricity core air-tightness detection device according to claim 2, it is characterized in that: described seal closure is made by opaque material, and described seal closure is provided with at least one form.
5. flexible packaging electricity core air-tightness detection device according to claim 2, it is characterized in that: described seal closure is fastened on the described pad by means of the self gravitation sealing, and forms closed cavity.
6. flexible packaging electricity core air-tightness detection device according to claim 2, it is characterized in that: described seal closure is fastened on the pad by means of the external force that is applied thereto, and forms closed cavity.
7. flexible packaging electricity core air-tightness detection device according to claim 2, it is characterized in that: described pad is to be made by rubber or silica gel material.
8. flexible packaging electricity core air-tightness detection device according to claim 2, it is characterized in that: described seal closure is provided with pore, and described tracheae connects described closed cavity through port sealing.
9. flexible packaging according to claim 1 electricity core air-tightness detection device is characterized in that: described vacuum source can provide 0 ~-vacuum tightness of 200kpa.
10. flexible packaging according to claim 1 electricity core air-tightness detection device is characterized in that: the vacuum tightness range of adjustment of described air valve is 0 ~-200kpa.
CN2011200652454U 2011-03-14 2011-03-14 Air-tightness detection device for flexible packaged battery core Expired - Lifetime CN202066650U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200652454U CN202066650U (en) 2011-03-14 2011-03-14 Air-tightness detection device for flexible packaged battery core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103148990A (en) * 2013-02-04 2013-06-12 百顺松涛(天津)动力电池科技发展有限公司 Lithium ion battery gas tightness detecting method
CN103832633A (en) * 2014-03-03 2014-06-04 中山市奥斯精工机械科技有限公司 Method and device for detecting air leakage of soft-package products
CN108534963A (en) * 2018-03-16 2018-09-14 昆山丘钛微电子科技有限公司 A kind of water proofing property detection method and system
CN110068762A (en) * 2019-04-01 2019-07-30 桑顿新能源科技有限公司 Soft-package battery packaging effect detection device and detection method
CN112484910A (en) * 2020-10-10 2021-03-12 合肥通视智能技术有限公司 Soft package vacuum detection device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103148990A (en) * 2013-02-04 2013-06-12 百顺松涛(天津)动力电池科技发展有限公司 Lithium ion battery gas tightness detecting method
CN103832633A (en) * 2014-03-03 2014-06-04 中山市奥斯精工机械科技有限公司 Method and device for detecting air leakage of soft-package products
CN103832633B (en) * 2014-03-03 2015-09-09 中山市奥斯精工机械科技有限公司 A kind of flexible packing products leak detection method and device
CN108534963A (en) * 2018-03-16 2018-09-14 昆山丘钛微电子科技有限公司 A kind of water proofing property detection method and system
CN110068762A (en) * 2019-04-01 2019-07-30 桑顿新能源科技有限公司 Soft-package battery packaging effect detection device and detection method
CN112484910A (en) * 2020-10-10 2021-03-12 合肥通视智能技术有限公司 Soft package vacuum detection device

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Granted publication date: 20111207