CN212485505U - Annotate liquid hole seal structure - Google Patents
Annotate liquid hole seal structure Download PDFInfo
- Publication number
- CN212485505U CN212485505U CN202021007678.XU CN202021007678U CN212485505U CN 212485505 U CN212485505 U CN 212485505U CN 202021007678 U CN202021007678 U CN 202021007678U CN 212485505 U CN212485505 U CN 212485505U
- Authority
- CN
- China
- Prior art keywords
- hole
- sealing
- sealed
- micelle
- liquid injection
- 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.)
- Active
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 75
- 238000007789 sealing Methods 0.000 claims abstract description 103
- 238000002347 injection Methods 0.000 claims abstract description 40
- 239000007924 injection Substances 0.000 claims abstract description 40
- 239000000693 micelle Substances 0.000 claims abstract description 35
- 239000002245 particle Substances 0.000 claims description 33
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The utility model relates to the technical field of batteries, a annotate liquid hole seal structure is disclosed for annotate the liquid hole to battery case and seal, include: the bottom surface of the sealing sheet is covered on the liquid injection hole; sealed micelle, sealed micelle sets up to the hemisphere, the bottom surface of sealed micelle pass through the nanometer and mould plastics connect in on the bottom surface of gasket, sealed micelle is crowded to be gone into in the liquid injection hole, the hemisphere face of sealed micelle is sealed support hold in the oral area in liquid injection hole. Through the structure, the liquid injection hole sealing structure can reduce the extrusion of rubber scraps and improve the sealing property of the liquid injection hole.
Description
Technical Field
The utility model relates to the technical field of batteries, especially, relate to a annotate liquid hole seal structure.
Background
In square lithium cell, will reserve on the casing and annotate the liquid hole, after square lithium cell equipment is accomplished, need pour into the casing of square lithium cell with electrolyte through annotating the liquid hole in, guarantee that the electric core of square lithium cell is soaked by electrolyte.
The sealing of the liquid injection hole after the injection of the electrolyte is completed is particularly important, and if the liquid injection hole is not sealed tightly, leakage of the square lithium battery can be caused, so that the performance of the battery is reduced, and the electrolyte is easily contaminated on other parts to cause corrosion of the parts.
At present, the existing sealing structure of the liquid injection hole is usually realized by firstly punching a sealing nail and then welding a sealing aluminum sheet. There are three disadvantages to this approach: firstly, two working procedures are required in the sealing process, which is time-consuming; secondly, the reliability of the seal is not high; third, this kind of sealed mode is by "axle-hole" interference fit, and the phenomenon of nailing offset can appear with the metal under this kind of cooperation condition in rubber, and it is downthehole that sealed nail can advance by force to annotate the liquid, leans on extruding the adhesive fillings to revise oneself, and the adhesive fillings can influence the welding of aluminum sealing sheet in the subsequent handling, is unfavorable for guaranteeing to annotate the leakproofness in liquid hole.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a annotate liquid hole seal structure, this annotate liquid hole seal structure can alleviate extruding of glued bits, improves the leakproofness of annotating the liquid hole.
To achieve the purpose, the utility model adopts the following technical proposal:
a liquid injection hole sealing structure for sealing a liquid injection hole of a battery case, comprising:
the bottom surface of the sealing sheet is covered on the liquid injection hole;
sealed micelle, sealed micelle sets up to the hemisphere, the bottom surface of sealed micelle connect in on the bottom surface of gasket, sealed micelle is crowded to be gone into in the liquid hole is annotated, the hemisphere face of sealed micelle is sealed support hold in annotate the oral area in liquid hole.
Preferably, the liquid injection hole is a stepped hole, the sealing sheet is arranged in the large-diameter section of the stepped hole, the bottom surface of the sealing sheet is covered on the stepped surface of the stepped hole, and the sealing rubber particles are extruded into the small-diameter section of the stepped hole.
Preferably, the thickness of the sealing piece is set to be equal to the depth of the large diameter section of the stepped hole.
Preferably, a fillet structure is arranged at the joint of the large-diameter section of the stepped hole and the small-diameter section of the stepped hole.
Preferably, the diameter range of the sealing rubber particles is set to be 1.2-1.5 times of the small diameter section of the stepped hole.
Preferably, the distance range of the sealing rubber particles entering the small-diameter section of the stepped hole is set to be 50% -100% of the depth of the small-diameter section of the stepped hole.
Preferably, a first guide inclined plane is arranged on the large-diameter section of the stepped hole, a second guide inclined plane is arranged on the sealing sheet, and the first guide inclined plane and the second guide inclined plane are arranged in parallel.
Preferably, the sealing sheet is provided with an installation groove, and the sealing rubber particles are installed in the installation groove.
Preferably, the bottom surface of the sealing sheet is provided perpendicular to the axis of the pour hole.
Preferably, the sealing plate is made of aluminum.
The utility model has the advantages that:
the utility model provides a annotate liquid hole seal structure, this annotate liquid hole seal structure include gasket and sealed micelle, and sealed micelle is connected on the gasket, and on the liquid hole was annotated in locating to the gasket lid, sealed micelle crowded income was annotated in the liquid hole for sealed micelle is sealed to be supported on annotating the liquid hole, has realized annotating the sealed of liquid hole, has prevented that electrolyte from annotating the liquid hole and leaking. In addition, sealed micelle sets up to the hemisphere, and the sealed micelle has the guide effect, is convenient for sealed micelle extrude under the exogenic action and annotates the liquid hole in, and if the sealed micelle is crowded the in-process of annotating the liquid hole of pouring into and takes place the skew, sealed micelle can pop out and annotate the liquid hole and can not advance by force and annotate the downthehole production of liquid and glue bits, can not exert an influence to the welding of follow-up gasket, is favorable to improving the leakproofness of annotating the liquid hole.
Drawings
FIG. 1 is a schematic structural view of a battery case with a sealing structure of a liquid injection hole according to an embodiment of the present invention;
FIG. 2 is a sectional view of a sealing structure of a liquid filling hole according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a sealing sheet and a sealing bead in a sealing structure of a liquid injection hole according to an embodiment of the present invention.
In the figure:
1. sealing the sheet; 2. sealing the colloidal particles; 3. a fillet structure; 4. a first guide slope; 5. a second guide slope; 6. mounting grooves; 100. a battery case; 101. and a liquid injection hole.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. 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 under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the specific embodiments with reference to the drawings.
The present embodiment provides a liquid injection hole sealing structure, as shown in fig. 1, for sealing a liquid injection hole 101 of a battery case 100, as shown in fig. 2, the liquid injection hole sealing structure includes a sealing sheet 1 and sealing rubber particles 2, the sealing rubber particles 2 are connected to the bottom surface of the sealing sheet 1, the bottom surface of the sealing sheet 1 is covered on the liquid injection hole 101, the sealing rubber particles 2 are squeezed into the liquid injection hole 101, and the sealing rubber particles 2 are sealed and abutted against the opening of the liquid injection hole 101. The liquid injection hole sealing structure can realize the sealing of the liquid injection hole 101 and can prevent the electrolyte from leaking from the liquid injection hole 101. Preferably, the sealing sheet 1 and the sealing rubber particles 2 are connected into a whole by adopting a nano injection molding process before the sealing sheet 1 is covered on the liquid injection hole 101, so that the connection strength of the sealing rubber particles 2 and the sealing sheet 1 can be improved, the technical process of welding a sealing aluminum sheet on a sealing nail in the prior art can be avoided, and the improvement of the sealing efficiency of the liquid injection hole 101 of the battery shell 100 is facilitated. More preferably, the mounting groove 6 has been seted up on the gasket 1, and the bottom of sealed micelle 2 is installed in mounting groove 6, is favorable to improving the joint strength of sealed micelle 2 and gasket 1.
In this embodiment, as shown in fig. 3, the sealing rubber particles 2 are hemispherical, the bottom surface of the sealing rubber particles 2 is connected to the bottom surface of the sealing sheet 1, and the hemispherical surface of the sealing rubber particles 2 is sealed and held against the mouth of the liquid injection hole 101. Preferably, the bottom surface of sealing strip 1 sets up to be perpendicular with notes liquid hole 101's axis, and seals micelle 2 and be located and annotate liquid hole 101 directly over for when sealing strip 1 lid was located on annotating liquid hole 101, sealed micelle 2 can just be to in the crowded notes liquid hole 101 of pouring into, is favorable to improving the oral area of annotating liquid hole 101 and the leakproofness of the hemisphere of sealed micelle 2.
Preferably, annotate liquid hole 101 and be the shoulder hole, in the major diameter section of shoulder hole is arranged in to gasket 1, on the step face of shoulder hole is located to the bottom surface lid of gasket 1, in the minor diameter section of shoulder hole is crowded into to sealed micelle 2 for gasket 1 is arranged in battery case 100 and can not outstanding in battery case 100 surface, is favorable to guaranteeing that battery case 100 surfacing. More preferably, the thickness of the sealing plate 1 is set to be equal to the depth of the large-diameter section of the stepped hole, so that after the sealing plate 1 is placed in the large-diameter section of the stepped hole, the top surface of the sealing plate 1 is flush with the outer surface of the battery shell 100, and the surface of the battery shell 100 is ensured to be flat.
More preferably, the diameter range of the sealing rubber particle 2 is set to be 1.2-1.5 times of the small-diameter section of the stepped hole, and the diameter of the sealing rubber particle 2 is set to be 1.4 times of the small-diameter section of the stepped hole in the embodiment, so that the sealing rubber particle 2 can be smoothly extruded into the small-diameter section of the stepped hole, and the sealing rubber particle 2 can have enough elastic restoring force to abut against the mouth of the small-diameter section of the liquid injection hole 101 after being extruded into the small-diameter section of the stepped hole. Further, the distance range of the sealing colloidal particle 2 entering the small-diameter section of the stepped hole is set to be 50% -100% of the depth of the small-diameter section of the stepped hole, namely the part of the sealing colloidal particle 2 entering the small-diameter section of the stepped hole is 50% -100% of the depth of the small-diameter section of the stepped hole, so that the distance of the sealing colloidal particle 2 entering the small-diameter section of the stepped hole is deep enough, and the phenomenon that the core package of the battery is damaged due to the fact that the sealing colloidal particle 2 contacts the. In this embodiment, the distance that sealing micelle 2 got into the shoulder hole path section sets up to 75% of the shoulder hole path section degree of depth, and it can be understood that technical personnel in the art can design the distance that sealing micelle 2 got into the shoulder hole path section according to actual conditions.
In this embodiment, the junction of the big footpath section of shoulder hole and the path section of shoulder hole is equipped with fillet structure 3, and sealed micelle 2 is after the path section of crowded shoulder hole, and the hemisphere face of sealed micelle 2 supports under the effect of elasticity restoring force and holds in fillet structure 3 formation one kind of face and the laminating of face, can further improve sealed micelle 2 to annotating the leakproofness that liquid hole 101 is sealed. Preferably, be equipped with first direction inclined plane 4 on the shoulder hole major diameter section, be equipped with second direction inclined plane 5 on the gasket 1, first direction inclined plane 4 and the 5 parallel arrangement of second direction inclined plane, first direction inclined plane 4 and the 5 mutual cooperations of second direction inclined plane can be located the ladder face of shoulder hole to gasket 1 lid and lead.
In this embodiment, the sealing colloidal particle 2 is a polypropylene colloidal particle, that is, the sealing colloidal particle 2 is made of polypropylene, so that the insulating property is good, and the chemical corrosion resistance is excellent. The gasket 1 is the aluminium finished piece, and gasket 1 adopts the aluminium material to make promptly, is convenient for keep unanimous with battery case 100's material, is favorable to follow-up gasket 1 and battery case 100's welding, is favorable to keeping whole battery case 100's intensity.
The procedure for sealing the pour hole 101 by the pour hole sealing structure provided in the present embodiment will be further described below.
Firstly, the sealing rubber particles 2 and the sealing sheet 1 are connected into a whole through a nano injection molding process, then the sealing rubber particles 2 are just opposite to the small-diameter section of the liquid injection hole 101 and are positioned, then the sealing rubber particles 2 are extruded into the small-diameter section of the liquid injection hole 101 and are tightly pressed by using a flat pressing mechanism, the sealing rubber particles 2 are sealed and abutted against the mouth part of the small-diameter section of the liquid injection hole 101, and the sealing of the liquid injection hole sealing structure on the liquid injection hole 101 is completed.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A pour hole sealing structure for sealing a pour hole (101) of a battery case (100), comprising:
the bottom surface of the sealing sheet (1) is covered on the liquid injection hole (101);
sealed micelle (2), sealed micelle (2) sets up to the hemisphere, the bottom surface of sealed micelle (2) connect in on the bottom surface of gasket (1), sealed micelle (2) are crowded into annotate in liquid hole (101), the hemisphere face of sealed micelle (2) is sealed support hold in annotate the oral area of liquid hole (101).
2. The liquid injection hole sealing structure according to claim 1, wherein the liquid injection hole (101) is a stepped hole, the sealing sheet (1) is arranged in a large-diameter section of the stepped hole, a bottom surface of the sealing sheet (1) is covered on a stepped surface of the stepped hole, and the sealing rubber particles (2) are squeezed into the small-diameter section of the stepped hole.
3. The pour hole sealing structure according to claim 2, characterized in that the thickness of the sealing piece (1) is set to be equal to the depth of the large diameter section of the stepped hole.
4. The pour hole sealing structure according to claim 2, characterized in that a fillet structure (3) is provided at the junction of the large diameter section of the stepped hole and the small diameter section of the stepped hole.
5. The liquid injection hole sealing structure according to claim 2, characterized in that the diameter range of the sealing rubber particles (2) is set to be 1.2-1.5 times of the diameter of the small diameter section of the stepped hole.
6. The liquid injection hole sealing structure according to claim 2, wherein the distance range of the sealing rubber particles (2) entering the small diameter section of the stepped hole is set to be 50-100% of the depth of the small diameter section of the stepped hole.
7. The pour hole sealing structure according to claim 2, wherein a first guide slope (4) is provided on the large diameter section of the stepped hole, a second guide slope (5) is provided on the sealing piece (1), and the first guide slope (4) and the second guide slope (5) are arranged in parallel.
8. The sealing structure for the liquid injection hole according to claim 1, wherein an installation groove (6) is formed in the sealing sheet (1), and the sealing rubber particles (2) are installed in the installation groove (6).
9. The pour hole sealing structure according to claim 1, characterized in that the bottom surface of the sealing sheet (1) is provided so as to be perpendicular to the axis of the pour hole (101).
10. The pour hole sealing structure according to claim 1, characterized in that the sealing piece (1) is an aluminum piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021007678.XU CN212485505U (en) | 2020-06-04 | 2020-06-04 | Annotate liquid hole seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021007678.XU CN212485505U (en) | 2020-06-04 | 2020-06-04 | Annotate liquid hole seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212485505U true CN212485505U (en) | 2021-02-05 |
Family
ID=74447783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021007678.XU Active CN212485505U (en) | 2020-06-04 | 2020-06-04 | Annotate liquid hole seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212485505U (en) |
-
2020
- 2020-06-04 CN CN202021007678.XU patent/CN212485505U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101079475B (en) | Sealing cell | |
| CN202905851U (en) | Sealing structure of injection hole of battery | |
| CN207753113U (en) | A kind of high usage electrochemical device | |
| CN210897503U (en) | Soft package battery packaging device | |
| CN204760442U (en) | Battery cover plate assembly and use battery of this subassembly | |
| CN108539113A (en) | Secondary battery of soft package lug and its secondary battery of soft package | |
| CN211088322U (en) | Lithium battery structure | |
| CN202678429U (en) | Lithium ion battery | |
| US20220399616A1 (en) | Electrochemical device and electronic device | |
| CN208460894U (en) | A kind of single battery core and flexible battery group | |
| CN212485505U (en) | Annotate liquid hole seal structure | |
| CN215070167U (en) | Novel button cell | |
| CN212461964U (en) | Connection structure and battery | |
| CN103490031A (en) | Positive tab, soft package lithium ion battery and method for manufacturing positive tab | |
| CN112968235A (en) | Battery cap and battery | |
| CN210182472U (en) | Lithium battery core | |
| US10673048B2 (en) | Secondary battery | |
| CN203166009U (en) | Zinc-manganese dry battery | |
| CN202308084U (en) | Flexibly-packaged elliptic battery | |
| CN203250809U (en) | Combined pole ear of lithium ion battery | |
| CN203406363U (en) | Positive lead and soft package lithium ion battery | |
| CN218632394U (en) | Annotate liquid hole seal structure, battery and battery module | |
| CN220368019U (en) | Bottom cover plate and cylindrical battery | |
| CN106785027B (en) | Gel electrolyte, battery core and paper shell battery containing gel electrolyte and preparation method of gel electrolyte | |
| CN219321412U (en) | Packaging structure of soft package battery core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |