CN210323318U - Detection apparatus for soft packet of plastic-aluminum membrane packaging performance of lithium cell - Google Patents
Detection apparatus for soft packet of plastic-aluminum membrane packaging performance of lithium cell Download PDFInfo
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- CN210323318U CN210323318U CN201921221382.5U CN201921221382U CN210323318U CN 210323318 U CN210323318 U CN 210323318U CN 201921221382 U CN201921221382 U CN 201921221382U CN 210323318 U CN210323318 U CN 210323318U
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- lithium battery
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- plastic film
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Abstract
The utility model discloses a detection apparatus for soft packet of plastic-aluminum membrane packaging performance of lithium cell, include: the device comprises an upper test chuck, a lower test chuck, a circuit change-over switch, an ammeter, an LED lamp and a power supply. Two lines are switched through the line switching switch, when the ammeter and the lithium battery are connected, a current test can be realized, and if current exists, the battery packaging abnormality is indicated. The lithium battery can be judged and detected on line in the mode according to the total packaging condition. When the power supply and the lithium battery are switched on, the selected battery with abnormal packaging has the function of providing an external power supply, so that the internal corrosion of the battery is accelerated, the quick positioning of the abnormal packaging position is realized, and an improvement direction is provided for the subsequent packaging process.
Description
Technical Field
The utility model relates to a detection apparatus for soft packet of plastic-aluminum membrane packaging performance of lithium cell.
Background
The aluminum plastic film is used as an important packaging material of the lithium ion battery, and the using performance of the battery is directly influenced by the quality of the sealing performance of the aluminum plastic film. The conventional aluminum-plastic film generally comprises a three-layer structure of nylon, aluminum foil and polypropylene, wherein the polypropylene layer is in direct contact with electrolyte, and the integrity of the packaged aluminum-plastic film plays a crucial role in protecting the aluminum foil layer. In the manufacturing process of the lithium ion battery, the heat sealing process generally melts polypropylene by a high-temperature end enclosure, and simultaneously applies pressure to seal the aluminum-plastic film bag, so that the polypropylene layer at the edge sealing position is broken, the aluminum foil layer directly contacts with electrolyte, once a negative electrode tab is contacted with the aluminum foil layer, an electronic passage and an ion passage are formed in the whole lithium ion battery, the internal corrosion of the battery is certainly caused, and great potential safety hazard is brought to the use of the subsequent battery.
Disclosure of Invention
An object of the utility model is to provide a detection apparatus for soft packet of plastic-aluminum membrane packaging performance of lithium cell can realize the short-term test of the plastic-aluminum membrane encapsulation condition.
The technical scheme for realizing the purpose is as follows:
the utility model provides a detection apparatus for soft packet of plastic-aluminum membrane packaging performance of lithium cell, includes: an upper test chuck, a lower test chuck, a circuit switch, an ammeter, an LED (light emitting diode) lamp and a power supply, wherein,
the lower test chuck clamps the negative plate of the lithium battery,
the upper testing chuck clamps an aluminum plastic film edge seal of the lithium battery, a pricking pin connected with a metal part on one side of the upper testing chuck penetrates through the aluminum plastic film edge seal to be in contact with an aluminum foil layer, and meanwhile, the pricking pin is in contact with a metal part on the other side of the upper testing chuck;
the lower test chuck is connected with the cathode of the LED lamp through a lead; the anode of the LED lamp is connected with the first moving contact of the circuit change-over switch through the ammeter;
the positive pole of the power supply is connected with the first moving contact, and the negative pole of the power supply is connected with the second moving contact of the circuit change-over switch;
and the static contact of the line change-over switch is connected with the upper test chuck through a lead.
Preferably, the method further comprises the following steps:
a signal line, and
and the display storage device is connected with the ammeter through the signal wire and used for storing and counting measurement data.
Preferably, the length of the needle is 2mm-5 mm.
Preferably, the needle is made of stainless steel.
The utility model has the advantages that: the utility model discloses an effective reasonable structural design, can accurate positioning polypropylene take place damaged position, detect the quick total of the plastic-aluminum membrane encapsulation condition, greatly reduced the potential safety hazard of lithium ion battery in follow-up use, provide the direction for the adjustment of follow-up production in-process technology.
Drawings
Fig. 1 is a device for detecting the packaging performance of a soft package aluminum-plastic film of a lithium battery according to the present invention;
FIG. 2 is a schematic diagram of a battery test;
fig. 3 is an enlarged view of a cell test section.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1, fig. 2 and fig. 3, the device for detecting the soft package aluminum plastic film packaging performance of the lithium battery of the present invention includes: the device comprises an upper test chuck 1, a lower test chuck 2, a circuit change-over switch 3, an ammeter 4, an LED lamp 5, a power supply 6, a signal wire 7 and a display storage device 8.
Referring to fig. 2, the lower test cartridge 2 clamps the negative electrode plate of the lithium battery, the upper test cartridge 1 has a sharp spike 11 with good conductivity, and the spike 11 is connected to a metal portion on one side of the upper test cartridge 1. In this embodiment, the lancet 11 has a length of 2mm to 5 mm. The puncture needle 11 is made of a material such as stainless steel having high hardness and a sharp tip.
As a preferred scheme, when in use, the upper test chuck 1 clamps the aluminum plastic film edge sealing 91 of the lithium battery, and then the pricking pin 11 pierces through the aluminum plastic film edge sealing 91 to contact the aluminum foil layer 92, and meanwhile, the pricking pin 11 contacts the metal part on the other side of the upper test chuck, so that the conduction between the negative electrode of the lithium battery and the aluminum foil layer 92 of the aluminum plastic film is realized. In fig. 3, 93 denotes a polypropylene layer.
The lower test cartridge 2 is connected to the cathode of the LED lamp 5 by a wire. The anode of the LED lamp 5 is connected with the first moving contact of the circuit change-over switch 3 through the ammeter 4. The positive pole of the power supply 6 is connected with the first moving contact, and the negative pole is connected with the second moving contact of the circuit change-over switch 3. The static contact of the line switch 3 is connected with the test chuck 1 through a lead.
The display and storage device 8 is connected with the ammeter 4 through a signal wire 7 and is used for displaying, storing and counting measurement data. The ammeter 4 is a common product model. The display storage device 8 may be implemented by a general computer system.
When the first moving contact and the fixed contact of the line change-over switch 3 are switched on, the equipment is in a current gear, once the current passes through the line, the LED lamp 5 is turned on to give an alarm prompt, and the display and storage device 8 is used for displaying and storing the circuit value and counting for 1 time. If no current is detected in the circuit, the LED lamp 5 is not lighted, the display storage device 8 does not display and count, and the next battery test is carried out, and the like.
When the second moving contact and the fixed contact of the line change-over switch 3 are connected, the device is in a power supply gear, the power supply 6 is connected, an external power supply can be provided for the lithium batteries clamped by the upper test chuck 1 and the lower test chuck 2, the internal corrosion reaction is accelerated, and the abnormal packaging point is quickly positioned. In addition, a plurality of test chucks can be connected simultaneously, and a plurality of production line products can be tested simultaneously.
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, therefore, all equivalent technical solutions should also belong to the scope of the present invention, and should be defined by the claims.
Claims (4)
1. The utility model provides a detection apparatus for soft packet of plastic-aluminum membrane packaging performance of lithium cell which characterized in that includes: an upper test chuck, a lower test chuck, a circuit switch, an ammeter, an LED lamp and a power supply, wherein,
the lower test chuck clamps the negative plate of the lithium battery,
the upper testing chuck clamps an aluminum plastic film edge seal of the lithium battery, a pricking pin connected with a metal part on one side of the upper testing chuck penetrates through the aluminum plastic film edge seal to be in contact with an aluminum foil layer, and meanwhile, the pricking pin is in contact with a metal part on the other side of the upper testing chuck;
the lower test chuck is connected with the cathode of the LED lamp through a lead; the anode of the LED lamp is connected with the first moving contact of the circuit change-over switch through the ammeter;
the positive pole of the power supply is connected with the first moving contact, and the negative pole of the power supply is connected with the second moving contact of the circuit change-over switch;
and the static contact of the line change-over switch is connected with the upper test chuck through a lead.
2. The device for detecting the soft package aluminum plastic film packaging performance of the lithium battery as claimed in claim 1, further comprising:
a signal line, and
and the display storage device is connected with the ammeter through the signal wire and used for storing and counting measurement data.
3. The lithium battery soft package aluminum plastic film packaging performance detection device as claimed in claim 1, wherein the length of the puncture needle is 2mm-5 mm.
4. The lithium battery soft package aluminum plastic film packaging performance detection device as claimed in claim 1, wherein the pricker is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921221382.5U CN210323318U (en) | 2019-07-31 | 2019-07-31 | Detection apparatus for soft packet of plastic-aluminum membrane packaging performance of lithium cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921221382.5U CN210323318U (en) | 2019-07-31 | 2019-07-31 | Detection apparatus for soft packet of plastic-aluminum membrane packaging performance of lithium cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210323318U true CN210323318U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921221382.5U Active CN210323318U (en) | 2019-07-31 | 2019-07-31 | Detection apparatus for soft packet of plastic-aluminum membrane packaging performance of lithium cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751735A (en) * | 2020-06-24 | 2020-10-09 | 珠海冠宇电池股份有限公司 | Method for rapidly detecting corrosion of lithium ion battery |
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2019
- 2019-07-31 CN CN201921221382.5U patent/CN210323318U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751735A (en) * | 2020-06-24 | 2020-10-09 | 珠海冠宇电池股份有限公司 | Method for rapidly detecting corrosion of lithium ion battery |
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