CN208368559U - A kind of cylindrical lithium battery cap leakproof seal - Google Patents
A kind of cylindrical lithium battery cap leakproof seal Download PDFInfo
- Publication number
- CN208368559U CN208368559U CN201821145035.4U CN201821145035U CN208368559U CN 208368559 U CN208368559 U CN 208368559U CN 201821145035 U CN201821145035 U CN 201821145035U CN 208368559 U CN208368559 U CN 208368559U
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- faucal
- cylindrical lithium
- ripples
- lower edge
- 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 - Fee Related
Links
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)
Abstract
The utility model discloses a kind of cylindrical lithium battery cap leakproof seals, including upper edge and lower edge, it is characterised in that: inside and outside wall is provided with several axial ripples on described, the inside and outside wall of lower edge is provided with several concentric ripples.If in battery punching press capping processes, protrusion lines and metal covering squeeze to form several sealed gas chambers, are filled layer by layer to the gap that may cause nut cap leakage by the way that arterial highway ripple is arranged along surface above and below in plastic cement sealing ring.After one side faucal collides deformation, solid grain can faster be sprung back compared with plastic cement plane, guarantee sealing effect；Another aspect faucal impurity cuts off individual lines, but other lines keep complete, still have good leakproofness.To greatest extent stop electrolyte exudation, guarantee lithium battery under extreme conditions using safe.
Description
Technical field
The utility model relates to lithium battery cap field more particularly to a kind of cylindrical lithium battery cap leakproof seals.
Background technique
Cylinder type lithium battery is due to the advantages that energy density is big, long service life, mature production technology, in daily life
It is widely applied, and nut cap leakage is to influence its major safety risks used.
After people feel battery seal at present, the plastic cement sealing ring in nut cap can be fitted closely with steel shell faucal, guarantee electricity
Pond sealing, it is believed that the more smooth sealing ring surface the better.Can nearly all there be faucal not in actual battery capping processes
Situations such as clean, faucal is coarse or coating punching press clast, in addition sealing die defect or impulse force are uneven, though it is rushed through sealing machine strength
Pressure, faucal closely coat nut cap, but on microcosmic, and sealing ring and faucal, sealing ring and nut cap can still have gap.In battery
Electrolyte generates hydrofluoric acid in exit since internal pressure and capillary phenomenon pass through gap and constantly ooze out outward, then by extroversion
Internal corrosion access is allowed to expand, and more serious leakage is caused under vicious circle.
Especially battery accidentally collides with or falls rear faucal deformation, and sealing ring rebound not enough, is formed greatly between nut cap
Channel, electrolyte inside, which is necessarily pressurized from deformation faucal gap, to flow out, once contact humid air decomposites hydrofluoric acid immediately,
Constantly corrosion nut cap and other component causes battery to get rusty short circuit, and can even strike sparks explosion when serious.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of cylindrical lithium battery cap leakproof seals
Circle, further increases battery sealing-performance, prevents leakage from happening.
To achieve the above objectives, the present invention adopts the following technical solutions:
A kind of cylindrical lithium battery cap leakproof seal, including upper edge and lower edge, it is characterised in that: on described along it is interior,
Outer wall is provided with several axial ripples, and the inside and outside wall of lower edge is provided with several concentric ripples.
The ripple section is triangle, rectangle, trapezoidal, zigzag or D-shaped.
If by adopting the above scheme, the beneficial effects of the utility model are: by being arranged above and below along surface in sealing ring
Arterial highway ripple, in battery punching press capping processes, protrusion lines and metal covering squeeze to form several sealed gas chambers, to may lead
The gap of nut cap leakage is caused to be filled layer by layer.After one side faucal collides deformation, solid grain can more be returned to compared with plastic cement plane
Bullet guarantees sealing effect；Another aspect faucal impurity cuts off individual lines, but other lines keep complete, still has good
Leakproofness.To greatest extent stop electrolyte exudation, guarantee battery under extreme conditions using safe.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of embodiment of the utility model.
Fig. 2 is the audio-visual picture of Fig. 1 illustrated embodiment.
Fig. 3 is 1/4 partial sectional view of Fig. 2.
In figure: on 1. edge, 2. lower edges, 3. ripples.
Specific embodiment
With reference to the accompanying drawings and detailed description, the utility model is described in further details.
A kind of cylindrical lithium battery cap leakproof seal as shown in Figure 1 to Figure 3, including on along 1 and lower along 2, it is described
On 1 inside and outside wall is provided with several axial ripples 3, it is described lower 2 inside and outside walls to be provided with several concentric ripples 3.
Before sealing, nut cap is pressed into steel shell faucal, the ripple 3 under gasket shape on 2 is flat to be seated at steel shell annular slot rolling
On face, on along 1 ripple 3 be close to faucal inner wall.When sealing, by sealing machine different height mould punching three times, make steel shell faucal
It gradually curves inwardly, constantly squeezes on sealing ring along 1, be allowed to concora crush in nut cap top cover outer, and make to confirm under sealing ring along 2
On slot rolling face.On sealing ring along 1, it is lower along 2 the regular extrusion deformation of ripple 3, be coupled in the metal surface being respectively close to, most
The tight-lipped pressure seal ring of end form shelling, sealing ring press nut cap, and the sealing state of slot rolling mouth is pressed in nut cap, guarantee battery in extreme item
No leakage under part.
The present utility model is not limited to the above embodiments, on the premise of not departing from the spirit and scope of the utility model,
The utility model also has various changes and improvements, these changes and improvements both fall within the scope of the claimed invention
It is interior.
Claims (2)
1. a kind of cylindrical lithium battery cap leakproof seal, including upper edge and lower edge, it is characterised in that: along inside and outside on described
Wall is provided with several axial ripples, and the inside and outside wall of lower edge is provided with several concentric ripples.
2. a kind of cylindrical lithium battery cap leakproof seal according to claim 1, it is characterised in that: the ripple is cut
Face is triangle, rectangle, trapezoidal, zigzag or D-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821145035.4U CN208368559U (en) | 2018-07-09 | 2018-07-09 | A kind of cylindrical lithium battery cap leakproof seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821145035.4U CN208368559U (en) | 2018-07-09 | 2018-07-09 | A kind of cylindrical lithium battery cap leakproof seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208368559U true CN208368559U (en) | 2019-01-11 |
Family
ID=64925535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821145035.4U Expired - Fee Related CN208368559U (en) | 2018-07-09 | 2018-07-09 | A kind of cylindrical lithium battery cap leakproof seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208368559U (en) |
-
2018
- 2018-07-09 CN CN201821145035.4U patent/CN208368559U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190111 Termination date: 20200709 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |