CN202662723U - Cylindrical battery with plastic casing - Google Patents
Cylindrical battery with plastic casing Download PDFInfo
- Publication number
- CN202662723U CN202662723U CN2012203673211U CN201220367321U CN202662723U CN 202662723 U CN202662723 U CN 202662723U CN 2012203673211 U CN2012203673211 U CN 2012203673211U CN 201220367321 U CN201220367321 U CN 201220367321U CN 202662723 U CN202662723 U CN 202662723U
- Authority
- CN
- China
- Prior art keywords
- outer pad
- housing
- cylindrical battery
- end cap
- pole
- 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
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- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to a cylindrical battery with a plastic casing, in particular to a large-capacity lithium ion cylindrical battery with a plastic casing. The invention discloses the structure of the cylindrical battery with the plastic casing, consisting of the casing a, an end cover b, an upper pole post c, a lower pole post d, an inner gasket e, an outer gasket f and a fixed nut g; the invention also discloses an assembly technology for the cylindrical battery with the plastic casing, including the assembly of the upper and lower pole posts, the hot-melting sealing of the end cover and the casing, and the assembly of an explosion-proof valve after liquid injection. The cylindrical battery with the plastic casing, particularly the large-capacity lithium ion cylindrical battery, has the advantages that the assembly is convenient and the production efficiency is high.
Description
Technical field
The present invention relates to technical field of lithium ion, especially jumbo lithium ion cylinder battery technical field.
Technical background
Lithium ion battery more and more in the power field, the energy storage field obtained application.Power field, lithium ion battery applications need larger battery capacity to satisfy course continuation mileage on electrocar and the electric bus time; Energy storage field, powerful energy-accumulating power station have also proposed very high requirement to the capacity of lithium ion battery.So the lithium ion battery in these fields needs that the monomer capacity is increasing just to meet the demands.
Existing lithium ion battery mainly contains two kinds, and a kind of is cylindrical battery, and a kind of is rectangular cell.
In the majority with box hat and aluminum hull material in the cylindrical battery.But capacity is all smaller, such as 18650,26650 etc.But in high-capacity lithium-ion cylindrical battery field, the problem of using box hat and aluminum hull to exist is: after shell dimension became greatly, housing was out of shape easily, increased with the assembling degree of difficulty of blocking a shot, and caused decrease in yield.So the cylindrical battery capacity of metal shell has been subject to the restriction of shell dimension.
The size of rectangular cell is flexible, and is easy to assembly, and its volume core mainly contains stacked and square takeup type two classes.Stacked complex process, production capacity is low, is not suitable for high capacity lithium ion battery; Square takeup type technique is fairly simple, and production capacity is also higher, but and the column type coiling latter that compares have larger advantage aspect process complexity and the efficient.
In addition, the battery good heat dispersion performance of metal shell, but at north cold area, especially the battery cryogenic property of LiFePO 4 material is relatively poor, and the metal shell of use perfect heat-dissipating affects the performance of the battery performance of LiFePO 4 material.
Summary of the invention
The cylindrical battery of a kind of plastic casing disclosed by the invention, solution be the difficult assembling of jumbo metal shell cylindrical battery, problem that rate of finished products is low, and in the low problem of cold district ferric phosphate lithium cell performance performance.
In order to address the above problem, the present invention takes following scheme to realize:
Its structure is by mainly being comprised of housing, end cap, upper pole, lower pole, internal gasket, outer pad, hold-down nut and battery roll core, and housing is tubular structure, its lower ending opening, and the upper end is for staying the semitight of a circular hole in the center; End cap cooperates with the openend capping docking of housing, and edge offers circular hole at end cap, and circular hole has internal thread; Upper pole and lower pole are comprised of welding pylon and fixed cylinder two parts, wherein fixed cylinder has helicitic texture, the welding pylon with lug be connected, the fixed cylinder of the welding pylon of upper pole top is inserted in successively behind internal gasket, housing semitight end, the outer pad and is connected locking with hold-down nut, and lower pole welds fixed cylinder below the pylon and is inserted in successively behind internal gasket, end cap, the outer pad and is connected locking with hold-down nut; Internal gasket and outer pad pad are that the soft elastic material of electrolyte resistance corrosion is made, and outer pad is provided with boss and docks with internal gasket.
Such scheme can further be improved to:
Anodal outer pad is red, and the outer pad of negative pole is black.
Encapsulant is sealed between end cap and the housing.
The assembly technology of the cylindrical battery of above-mentioned plastic casing is: will roll up the core tab welding under the upper pole of c and the d behind the pole, and enter behind the shell fixedly end cap and pole, end cap and housing are carried out hot-melting sealed.Refill after fluid injection changes into and join explosion-proof valve.
Above-mentioned entering the shell side formula, is after upper pole is added internal gasket, to pass housing semitight end circular hole, adds red outer pad, with fixing pole and the housing gone up of hold-down nut again.Pass end cap after lower pole adds internal gasket, add the outer pad of black, re-use nut and fix lower pole and end cap.
Above-mentioned hot-melting sealed mode is with the shell nozzle end of packing into of round platform under the end cap, again with housing and end cap junction hot-melting sealed.
In order to guarantee the sealing of cylindrical battery, use the battery special seal gum to seal on pole and outer pad, end cap and housing and outer pad and housing junction.
Fluid injection changes into after the exhaust, and explosion-proof valve is packed in the screwed hole of end cap, re-uses the battery special seal gum place that is tightly connected.
The present invention assembles simply, rate of finished products is high, and the battery of plastic material possesses certain insulation effect, is conducive to improve the cryogenic property of the LiFePO 4 material battery of cold district.
Description of drawings
In order to be illustrated more clearly in the invention process or technical scheme of the prior art, the below does simply the accompanying drawing of embodiment and introduces:
Fig. 1 is a kind of cylindrical battery overall structure figure of plastic casing;
Fig. 2 is the front view of plastic casing;
Fig. 3 is the vertical view of Fig. 2;
The front view of Fig. 4 end cap;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the profile of b-b ＇ among Fig. 5;
Fig. 7 is the front view of outer pad;
Fig. 8 is the vertical view of Fig. 7;
Fig. 9 is the profile of f-f ＇ among Fig. 5;
Embodiment
Accompanying drawing 1-9 below in conjunction with in the embodiment of the invention is clearly and completely described the technical scheme in the embodiment of the invention.
The cylindrical battery of a kind of plastic casing disclosed by the invention, its structure is by mainly being comprised of housing a, end cap b, upper pole c, lower pole d, internal gasket e, outer pad f and hold-down nut g.
Housing a is the material housing of PP material, housing one end opening, and an other end semitight, a circular port is left in the centre, is the passage that passes of upper pole c.Preferably, add fire retardant and hardening agent in the above-mentioned a housing, to improve security performance and the hardness of housing.
End cap b is the PP material, is shaped as big or small pylon assembly, and there is circular hole at the end cap center, is the passage that passes of lower pole; Central side has a circular hole, and upper aperture is large and screw thread is arranged, and is the explosion-proof valve installation position; Lower aperture is little to be smooth passage, is fluid injection and exhaust passage.Preferably, add fire retardant and hardening agent in the above-mentioned b end cap, strengthen security performance and the hardness of housing; The aperture of central side is according to the size of a housing and reservoir quantity and adjusting size.
Upper pole c and lower pole d for conducting electricity good metal material, are comprised of welding pylon and fixed cylinder.The welding pylon is used for the welding with the positive and negative lug of volume core; Possess screw thread on the fixed cylinder, be fixed nut g to pole and housing are fixed up and down.Pole has possessed the ability by large electric current up and down, and the screw thread on the fixed cylinder has also been reserved the space for the connection between the cell, makes things convenient for the later stage battery in groups.Preferably, above-mentioned upper pole c and lower pole d are formed by the metal material processing of electric conductivity and satisfactory mechanical property, and the diameter of pole and battery capacity and high rate performance require to be complementary.
Outer pad f is corrosion resistant software plastics or elastomeric material, and middle evagination circular, evagination partly pass behind the circular hole of housing a in internal gasket e contact, and the software material guarantees that inside and outside pad contact is good.The centre bore position of outer pad is the passage of pole.Outer pad has red and two kinds of colors of black, is used for distinguishing the positive-negative polarity of battery.Preferably, the outer pad of above-mentioned f is distinguished battery plus-negative plate with two kinds of different colors.Anodal red outer pad, the outer pad of negative pole use black of using.
Hold-down nut g is the hexagonal metal nut, and upper pole c, lower pole d are fixed on housing a and the end cap b.
The assembling of the cylindrical battery of a kind of plastic casing disclosed by the invention, preferred step is:
(1) it is welded together to roll up the positive and negative lug of core and upper pole c and lower pole d.
(2) will be upper pole c enter shell after adding internal gasket e, add red outer pad f after passing the centre bore of housing a semitight end, use hold-down nut g fixes.
(3) internal gasket e and end cap b, the outer pad f of black are penetrated lower pole d successively, then use hold-down nut g to fix.
(4) end cap b is packed into the openend of housing a uses hot melting equipment with the two junction hot-melting sealed.
(5) the complete rear use battery special seal gum of assembling carries out encapsulation process with the junction of pole and outer pad, outer pad and housing, outer pad and end cap and end cap and housing.
(6) the fluid injection steam vent from end cap b carries out fluid injection, and open formation.Change into and explosion-proof valve is screwed into the screwed hole of fluid injection steam vent after complete, and then with the battery special seal gum encapsulation process is carried out in the junction of explosion-proof valve and end cap.
For the above-mentioned explanation of the disclosed embodiments, only be preferred embodiment of the present invention, be not to limit practical range of the present invention.Be that every equivalence of doing according to the content in the present patent application claim changes and modification, all should be technology category of the present invention.
Claims (3)
1. the cylindrical battery of a plastic casing, it is characterized in that, its structure is by mainly being comprised of housing (a), end cap (b), upper pole (c), lower pole (d), internal gasket (e), outer pad (f), hold-down nut (g) and battery roll core, housing (a) is tubular structure, its lower ending opening, the upper end is for staying the semitight of a circular hole in the center; End cap (b) cooperates with the openend capping docking of housing (a), and edge offers circular hole at end cap (b), and circular hole has internal thread; Upper pole (c) and lower pole (d) are comprised of welding pylon and fixed cylinder two parts, wherein fixed cylinder has helicitic texture, the welding pylon with lug be connected, be connected locking with hold-down nut (g) after the fixed cylinder of the welding pylon top of upper pole (c) is inserted in internal gasket (e), housing (a) semitight end, outer pad (f) successively, be connected locking with hold-down nut (g) after the fixed cylinder of lower pole (d) welding pylon below is inserted in internal gasket (e), end cap (b), outer pad (f) successively; Internal gasket (e) and outer pad (f) pad are that the soft elastic material of electrolyte resistance corrosion is made, and outer pad (f) is provided with boss and docks with internal gasket (e).
2. the cylindrical battery of the plastic casing described in claims 1 is characterized in that, anodal outer pad is red, and the outer pad of negative pole is black.
3. such as the cylindrical battery of claims 1 or 2 described plastic casings, it is characterized in that encapsulant is sealed between end cap (b) and the housing (a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203673211U CN202662723U (en) | 2012-07-27 | 2012-07-27 | Cylindrical battery with plastic casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203673211U CN202662723U (en) | 2012-07-27 | 2012-07-27 | Cylindrical battery with plastic casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202662723U true CN202662723U (en) | 2013-01-09 |
Family
ID=47457606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203673211U Expired - Fee Related CN202662723U (en) | 2012-07-27 | 2012-07-27 | Cylindrical battery with plastic casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202662723U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091902A (en) * | 2014-07-15 | 2014-10-08 | 惠州威健锂能电子有限公司 | Disposable lithium-ion battery with heat-shrinkable plastic thin-film shell and manufacturing method thereof |
| CN109860604A (en) * | 2019-01-28 | 2019-06-07 | 中盐安徽红四方锂电有限公司 | A kind of lithium iron phosphate dynamic battery and its manufacturing method |
-
2012
- 2012-07-27 CN CN2012203673211U patent/CN202662723U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091902A (en) * | 2014-07-15 | 2014-10-08 | 惠州威健锂能电子有限公司 | Disposable lithium-ion battery with heat-shrinkable plastic thin-film shell and manufacturing method thereof |
| CN109860604A (en) * | 2019-01-28 | 2019-06-07 | 中盐安徽红四方锂电有限公司 | A kind of lithium iron phosphate dynamic battery and its manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20140727 |
|
| EXPY | Termination of patent right or utility model |