CN217901656U

CN217901656U - Laminate polymer battery detection mechanism

Info

Publication number: CN217901656U
Application number: CN202221403881.8U
Authority: CN
Inventors: 张凤阳; 杨亦双; 杨庆亨
Original assignee: Zhongxing Pylon Battery Co Ltd
Current assignee: Zhongxing Pylon Battery Co Ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-11-25
Anticipated expiration: 2032-06-07

Abstract

The utility model discloses a laminate polymer battery detection mechanism has solved the conventional mode of tailorring laminate polymer battery case and has been strong to battery case destructiveness, and follow-up difficult secondary that carries out annotates liquid and gaseous detection scheduling problem, and its main technical scheme is laminate polymer battery case including the parcel has the utmost point core, inside being equipped with of battery case one side communicates to outer interior siphunculus, in interior siphunculus bottom was through base injection formula embedding battery case, its top was equipped with the seal assembly who is used for annotating the liquid, seal assembly still communicates there is gaseous contact tube, seal assembly can the activity seal gas contact tube.

Description

Laminate polymer battery detection mechanism

Technical Field

The utility model relates to a lithium cell detects technical field, and more specifically says, it relates to a laminate polymer battery detection mechanism.

Background

At present, the secondary liquid injection process of the lithium ion soft package battery is complex: cut laminate polymer battery's air pocket, through opening to the inside injection electrolyte of battery, encapsulate again, because the battery is in charged state, inside dust and moisture in the air can get into the battery, cause destruction to the battery, therefore, this process not only increases the processing cost but also has higher requirement to operational environment, it can generate gas all to become or the battery that became invalid, conventional gas gathers to prick the syringe needle directly into electric core extraction gas, carry out gas acquisition, but this process can lead to the outside air to get into, destroy battery internal environment, and the gaseous easy pollution of collection, the normal position that can't accomplish detects.

At present, as chinese utility model patent of publication number CN210742203.U discloses a battery detecting system, including battery, connecting pipe, first trachea, barometer, second trachea, valve and gaseous analytical equipment, the battery includes top cap and casing, is provided with the venthole on the top cap and annotates the liquid hole, connecting pipe and venthole intercommunication are passed through to first tracheal one end, first tracheal other end and barometer intercommunication, the tracheal one end of second is connected and switches on with first tracheal non-tip position, the tracheal other end of second and gaseous analytical equipment intercommunication, the valve setting is on the second trachea.

Although the device can detect the internal positive pressure and negative pressure state of the battery simultaneously, the device can not be suitable for detecting the gas production component in the soft package battery, valves, top covers and the like in the device do not exist in the soft package battery, the shell of the soft package battery is mostly formed by injection molding, the shell air bag is cut conventionally, the destructive performance of the soft package battery is strong, the follow-up situation is difficult to repair, and the requirements of secondary liquid injection of the battery and the detection of internal gas cannot be met.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a can realize the laminate polymer battery detection mechanism of laminate polymer battery secondary filling liquid and gaseous detection under the prerequisite that the reduction destroyed laminate polymer housing.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides a laminate polymer battery detection mechanism, has laminate polymer battery case of utmost point core including the parcel, battery case one side is equipped with the interior siphunculus with external intercommunication, interior siphunculus bottom is sealed with battery case trompil department, and its top is equipped with the seal assembly who is used for annotating the liquid, seal assembly still communicates there is gaseous contact tube, seal assembly can the activity sealed gaseous contact tube.

Further, seal assembly includes outer siphunculus, rubber pad and foraminiferous bolt cap, outer siphunculus top and foraminiferous bolt cap screw-thread fit, foraminiferous bolt cap top is through fixed rubber pad to the activity of siphunculus top sealed, its bottom be equipped with outer siphunculus inner wall interference fit's sealing washer, interior siphunculus top is passed the sealing washer, and its bottom is sealed with the laminating of outer siphunculus inner wall.

Further, interior siphunculus bottom is fixed with the base, base injection pressure formula is gone into in battery case and sealed through O circle and battery case inner wall, outer siphunculus bottom is located battery case and corresponds with the base and compresses tightly battery case with sealed.

Further, interior siphunculus bottom outer end is moulded plastics as an organic wholely with outer siphunculus, outer siphunculus bottom is sealed through AB glue joint with battery case trompil department, outer siphunculus inner wall bottom is sealed through O circle and battery case.

Furthermore, the base can be bonded and sealed with the opening of the battery shell through AB glue.

Further, the sealing position of the base and the battery shell is positioned on one side of the battery shell far away from the pole core.

Further, the gas delivery pipe is communicated with an external gas analyzer through a sealing pipeline.

The beneficial effects of the utility model are that, avoided the conventionality to tailor laminate polymer battery case's destruction, conveniently carry out gaseous detection and secondary to laminate polymer battery in and annotate the liquid, gaseous testing process is difficult for receiving external air interference, detects the precision height, and the complete machine structure is simple and easy, and the cost is lower, and the suitability is strong.

Drawings

Fig. 1 is an exploded view of embodiment 1 of the present invention;

fig. 2 is an internal cross-sectional view of embodiment 1 of the present invention;

fig. 3 is an internal cross-sectional view of embodiment 3 of the present invention;

in the figure: 1. a liquid injection hole; 2. a rubber pad; 3. a bolt cap with a hole; 4. a seal ring; 5. an outer communicating pipe; 6. a gas delivery pipe; 7. an O ring; 8. a base; 9. a pole piece; 10. a housing; 11. an inner pipe.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Example 1:

referring to fig. 1-2, laminate polymer battery detection mechanism in this embodiment, including the laminate polymer battery shell 10 that the parcel has utmost point core 9, laminate polymer battery shell 10 including the parcel has utmost point core 9, battery shell 10 one side is equipped with the interior siphunculus 11 with external intercommunication, in interior siphunculus 11 bottom was annotated the formula and is imbedded battery shell 10 through base 8, its top was equipped with the seal assembly who is used for annotating the liquid, seal assembly still communicates has gaseous contact tube 6, seal assembly can activity seal gas contact tube 6.

Sealing assembly includes outer siphunculus 5, rubber pad 2 and

foraminiferous bolt cap

3, 5 tops of outer siphunculus and 3 screw-thread fit of foraminiferous bolt cap, its bottom is located battery case 10 and corresponds outside and with base 8 and compress tightly sealed, 3 tops of foraminiferous bolt cap are through fixed rubber pad 2 internal siphunculus 11 top activity seal, its bottom be equipped with 5 inner wall interference fit's of outer siphunculus sealing washer 4, sealing washer 4 is passed at interior siphunculus 11 top, its bottom is sealed with 5 inner wall laminating of outer siphunculus, 8 tops of base are sealed with battery case 10 inner wall through O circle 7, gas eduction tube 6 is through sealed pipeline and outside gas analysis appearance intercommunication.

To the scheme in this application, to the laminate polymer battery that awaits measuring, at first punch in one side of keeping away from utmost point core 9 at battery case 10, and inject through outside notes pressure equipment and press in battery case 10 with interior siphunculus 11

base

8, 7 and battery case 10 inner wall sealings are passed through at base 8 tops, battery case 10 is the plastic-aluminum membrane material, the outer siphunculus 5 that corresponds with base 8 compresses tightly the laminating with base 8, so far realize through inside and outside siphunculus intercommunication battery case 10 in with external, 5 tops of outer siphunculus still are equipped with seal assembly, seal assembly is used for the gaseous contact tube 6 of activity seal, concrete sealed step is as follows:

to the discharge of production gas in the battery that awaits measuring, at first spin on through foraminiferous bolt cap 3, rubber pad 2 and the separation of interior siphunculus 11 top this moment, gaseous through interior siphunculus 11 bottom base 8 via interior siphunculus 11 top discharge, because the interference fit of sealing washer 4 with outer siphunculus 11 inner wall, sealing washer 4 can realize the sealed of outer siphunculus 11 inner wall screw thread, gaseous clearance discharge that can follow 3 outer walls of foraminiferous bolt cap and interior siphunculus 11 outer wall, discharge the back and detect by the gaseous analytical equipment of 6 discharges of gas delivery pipe to outside again, it is common like gas chromatograph through sealed pipeline and 6 intercommunications of gas delivery pipe in order to detect, the gas outgoing process can not receive outside air pollution, detect the precision height.

After the internal gas is discharged, the secondary injection of the electrolyte of the soft package battery can be injected through the sealing piece, at the moment, the bolt cap 3 with the hole is screwed down to the rubber gasket 2 to be attached to the top of the inner through pipe 11 in a needle tube injection mode, the outer needle tube is inserted into the inner through pipe 2 through the rubber gasket 2 for injection, the electrolyte flows into the inner through pipe 11 through the injection hole 1, the O ring 7 can prevent the electrolyte from leaking from the bottom of the base 8, and then the electrolyte flows into the pole core 9 through the inner through pipe 11.

After secondary injection, one side of the soft package shell 10, which does not contain the pole core 9, can be cut and sealed through external equipment, so that the soft package battery can be conveniently used subsequently.

Example 2:

the difference from the embodiment 1 is that the base 8 does not need to be injected into the battery case 10, and only needs to open a hole in advance on the battery case 10, and then the base 8 and the battery case 10 made of the aluminum-plastic film are bonded and sealed by using the AB glue, so that the battery case is convenient and reliable.

Example 3:

as shown in fig. 3, the outer end of the bottom of the inner tube 11 is integrally molded with the outer tube 5, which is different from embodiment 1 in that the base 8 is not needed, the bottom of the outer tube 5 is directly sealed with the battery case 10 made of aluminum-plastic film by bonding with an AB glue, the inner wall of the outer tube 5 is sealed with the battery case 10 by the O-ring 7 to block the gas from flowing out, and the gas tightness is better.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The utility model provides a laminate polymer battery detection mechanism, has laminate polymer battery case of utmost point core including the parcel, its characterized in that: the utility model discloses a battery pack, including battery case, seal assembly and gas contact tube, battery case one side is equipped with the interior siphunculus with external intercommunication, interior siphunculus bottom is sealed with battery case trompil department, and its top is equipped with the seal assembly who is used for annotating the liquid, seal assembly still communicates there is the gas contact tube, seal assembly can the activity seal gas contact tube.

2. The pouch cell detection mechanism according to claim 1, wherein: the sealing assembly comprises an outer through pipe, a rubber pad and a perforated bolt cap, the top of the outer through pipe is in threaded fit with the perforated bolt cap, the top of the perforated bolt cap is movably sealed on the top of the inner through pipe through the fixed rubber pad, a sealing ring in interference fit with the inner wall of the outer through pipe is arranged at the bottom of the perforated bolt cap, the top of the inner through pipe penetrates through the sealing ring, and the bottom of the inner through pipe is attached to the inner wall of the outer through pipe and sealed.

3. The soft package battery detection mechanism of claim 2, characterized in that: the bottom of the inner through pipe is fixed with a base, the base is embedded into the battery shell in an injection-pressing mode and is sealed with the inner wall of the battery shell through an O ring, and the bottom of the outer through pipe is positioned outside the battery shell and corresponds to the base to compress the battery shell for sealing.

4. The pouch cell detection mechanism according to claim 1 or 2, characterized in that: interior siphunculus bottom outer end moulds plastics as an organic wholely with outer siphunculus, outer siphunculus bottom is sealed through AB glue joint with battery case trompil department, outer siphunculus inner wall bottom is sealed with battery case through the O circle.

5. The pouch cell detection mechanism according to claim 3, wherein: the base can also be bonded and sealed with the opening of the battery shell through AB glue.

6. The soft package battery detection mechanism of claim 5, characterized in that: the sealed position of the base and the battery shell is positioned on one side of the battery shell far away from the pole core.

7. The pouch cell detection mechanism according to claim 1, wherein: and the gas delivery pipe is communicated with an external gas analyzer through a sealed pipeline.