CN102569879A - Lithium ion battery and preparation method thereof - Google Patents
Lithium ion battery and preparation method thereof Download PDFInfo
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- CN102569879A CN102569879A CN2011104388760A CN201110438876A CN102569879A CN 102569879 A CN102569879 A CN 102569879A CN 2011104388760 A CN2011104388760 A CN 2011104388760A CN 201110438876 A CN201110438876 A CN 201110438876A CN 102569879 A CN102569879 A CN 102569879A
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- lithium ion
- ion battery
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- electric core
- insulation material
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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
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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
- 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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Abstract
The invention belongs to the technical field of lithium ion batteries and particularly relates to a lithium ion battery. The lithium ion battery comprises a battery cell, a guard plate positioned at the front end of the battery cell, and a plastic through window arranged at the periphery of the battery cell in a framing manner, wherein the plastic through window is wrapped with the plastic through window. Compared with the prior art, the fireproof insulating material of the lithium ion battery provided by the invention can be directly bonded to the surfaces of the battery cell and the plastic through window, other parts are not required to be used for wrapping the material of the battery cell, and the cost and manual work are saved; the plastic through window enables the battery cell to use more thickness space, enables the capacity of the battery to be maximized and the endurance time to be longer; the fireproof insulating material adopts a UL approved fireproof material, so that the safety performance is improved; the fireproof insulating material can be used for wrapping the plastic through window directly to enable an entire product to be integral, the structural strength is enhanced, and the product safety factor is increased; and the battery cell is symmetrically placed, the guard plate can be designed to be minimal in size, and the capacity of the battery cell is enlarged. Moreover, the invention further discloses a method for preparing the lithium ion battery.
Description
Technical field
The invention belongs to technical field of lithium ion, particularly adopt the fire-proof insulation material layer directly wrap up the logical frame of plastic cement, simple in structure, assembling fast, lithium ion battery that maximum capacity and security performance are high and preparation method thereof.
Background technology
A kind of as clean energy resource, lithium ion battery is because it has the voltage height, and it is long to discharge and recharge the life-span; Environmental pollution little with plurality of advantages such as self-discharge rate is low, be widely used on each electronic product, like smart mobile phone; Notebook computer, digital camera and portable compact electric apparatus etc.
Along with people's improves constantly what the miniaturization of electronic product required, and lithium ion battery also requires accordingly to accomplish slimming, lightness, accomplishes high-energy-densityization, high capacity and high safe simultaneously.
At present, the packaging structure of lithium ion battery generally comprises protecgulum, bonnet, shell and baffle etc., generally is connected through bonding between protecgulum and bonnet and the electric core, perhaps is welded to connect.Shell is generally metal or plastic cement material, and shell and protecgulum and bonnet generally through bonding or be welded to connect, perhaps adopt the method for integrated through injection molding moulding.Between electricity core and the shell, and the space filling with sealant between protecgulum and the electric core, between bonnet and the electric core, so that electric core is unlikely to rock.Protecgulum and bonnet need injection moulding to form certain thickness frame, with proof strength, cause wasting space big, and energy density can not improve, and can not satisfy the demand of slimming lithium ion battery; And assembly technology is complicated, is unfavorable for enhancing productivity and reducing production costs.
And these shells all are not fire proofing materials, when battery generation internal short-circuit etc. is unexpected, cause danger such as on fire or blast easily, and security performance is not high.
In view of this, necessary provide adopt the fire-proof insulation material layer directly wrap up the logical frame of plastic cement, simple in structure, assembling fast, lithium ion battery that maximum capacity and security performance are high and preparation method thereof.
Summary of the invention
One of the object of the invention is: to the deficiency of prior art, and provide a kind of adopt the fire-proof insulation material layer directly wrap up the logical frame of plastic cement, simple in structure, assembling fast, maximum capacity and the high lithium ion battery of security performance.
To achieve these goals, the present invention adopts following technical scheme:
A kind of lithium ion battery comprises electric core, is positioned at the baffle of electric core front end, and frame is located at the logical frame of the peripheral plastic cement of said electric core, and the logical frame of said plastic cement is wrapped with the fire-proof insulation material layer.Use the fire-proof insulation material layer can improve fire protecting performance, fire-protection rating can reach VTM-0 (highest ranking in the UL94 plastics fire-protection rating assessment system), and then improves security performance.And on the thickness direction of the logical frame of plastic cement with the consistency of thickness of electric core, make electric core more utilize thickness space more, increase the capacity of electric core, and simple in structure, can satisfy the demand of existing market.
As a kind of improvement of lithium ion battery of the present invention, said fire-proof insulation material is phenolic resins, aramid fiber, polycarbonate plastic or polyurethane.These materials not only have excellent fireproof performance, and light weight, also have certain rigidity simultaneously, can play the effect of the electric core of protection.
As a kind of improvement of lithium ion battery of the present invention, the thickness of said fire-proof insulation material layer is 0.01-0.09mm.This be because, equal battery size, the lapping of ultra book makes electric core can utilize more spaces, increases the capacity of electric core.
As a kind of improvement of lithium ion battery of the present invention, be provided with first insulating paper between said electric core and the baffle.
The said electric core of a kind of improvement as lithium ion battery of the present invention is connected through spot welding with baffle.
The said baffle of a kind of improvement as lithium ion battery of the present invention is wrapped with second insulating paper.Baffle adopts insulating paper all to wrap up in inside, make the coefficient of safety of battery higher.
The said fire-proof insulation material layer of a kind of improvement as lithium ion battery of the present invention posts the fire prevention label outward.
The said electric core of a kind of improvement as lithium ion battery of the present invention is four.Four electric core symmetries are placed, and baffle can design to minimum dimension, and the capacity of electric core can be strengthened in the save design space.
With respect to prior art, the present invention has following advantage at least:
The first, the fire-proof insulation material can directly be bonded in electric core and the logical frame table face of plastic cement, need not the electric core material of the fixing parcel of other parts, practices thrift cost with artificial, can realize mechanical automatic lot manufacturing;
The second, the logical frame of plastic cement makes electric core can utilize more thickness space, makes battery capacity maximize, and cruising time is longer;
The 3rd, the fire-proof insulation material uses the fire proofing material of UL authentication, and fire-protection rating can reach VTM-0 (highest ranking in the UL94 plastics fire-protection rating assessment system), and then improves security performance;
The 4th, the fire-proof insulation material directly wraps up the logical frame of plastic cement makes entire product become as a whole, and structural strength strengthens, and improves the product safety coefficient;
The 5th, electric core is that symmetry is placed, and baffle can design to minimum dimension, and the capacity of electric core can be strengthened in the save design space.
Another object of the present invention is to provide a kind of preparation method of lithium ion battery, comprises the steps:
The first step is attached to electric core front end with first insulating paper, electric core point is welded on the baffle, again with second insulating paper parcel baffle;
Second step, pack electric core and baffle in the logical frame of plastic cement into, wrap up plastic cement with the fire-proof insulation material and lead to frame; Form the fire-proof insulation material layer; Adopt bonding connection between electricity core and the fire-proof insulation material layer, and on the fire-proof insulation material layer, paste the fire prevention label, accomplish the assembling of battery.
With respect to prior art, the preparation method of lithium ion battery of the present invention is simple to operate, and the fire-proof insulation material layer can directly be bonded in electric core and the logical frame table face of plastic cement; Need not fixedly fire-proof insulation material of other parts; Practice thrift cost with artificial, operating efficiency is high, can realize mechanical automatic lot manufacturing; And the lithium ion battery that makes has the high characteristics of security performance height, thin thickness, light weight and energy density, is applicable in the electronic equipment of miniaturization, lightness.
Description of drawings
Fig. 1 is an explosive view of the present invention;
Fig. 2 is an isometric front view of the present invention;
Fig. 3 is a rear isometric view of the present invention.
Embodiment
Below in conjunction with embodiment and Figure of description, the present invention is described in further detail, but execution mode of the present invention is not limited thereto.
Like Fig. 1, shown in 2 and 3, lithium ion battery of the present invention comprises electric core 5, is positioned at the baffle 6 of electric core 5 front ends; And frame is located at the peripheral logical frame 3 of plastic cement of said electric core 5, and the logical frame 3 of said plastic cement is wrapped with fire-proof insulation material layer 2, wherein; The quantity of electricity core 5 is 4, becomes symmetry to place, and baffle can be designed to minimum dimension; The capacity of electric core 5 can be strengthened in the save design space.Accordingly, the size of the logical frame 3 of plastic cement and the size of four electric cores 5 are complementary, on thickness direction, and the thickness of the logical frame 3 of plastic cement and the consistency of thickness of electric core 5.
Wherein, said fire-proof insulation material is phenolic resins, aramid fiber, polycarbonate plastic or polyurethane.。These materials not only have excellent fireproof performance, and light weight, also have certain rigidity simultaneously, can play the effect of the electric core 5 of protection.The thickness of said fire-proof insulation material layer 2 is 0.01-0.09mm.
Wherein, be provided with first insulating paper 7 between said electric core 5 and the baffle 6, electric core 5 and baffle 6 are connected through spot welding, and baffle 6 is wrapped with second insulating paper 4, the fire-proof insulation material layer 2 outer fire prevention labels 1 that post.
During assembling, comprise the steps:
The first step is attached to electric core 5 front ends with first insulating paper 7,5 in electric core is welded on the baffle 6, again with second insulating paper, 4 parcel baffles 6;
Second step, pack electric core 5 and baffle 6 in the logical frame 3 of plastic cement into, wrap up plastic cement with the fire-proof insulation material and lead to frame 3; Form fire-proof insulation material layer 2; Adopt bonding connection between electricity core 5 and the fire-proof insulation material layer 2, and on fire-proof insulation material layer 2, paste fire prevention label 1, accomplish the assembling of battery.
In sum, the preparation method of lithium ion battery of the present invention is simple to operate, and fire-proof insulation material layer 2 can directly be bonded in electric core 5 and logical frame 3 surfaces of plastic cement, need not fixedly fire-proof insulation material layer 2 of other parts, practices thrift cost with artificial; And the lithium ion battery that makes has the high characteristics of security performance height, thin thickness, light weight and energy density, is applicable in the electronic equipment of miniaturization, lightness.
According to the announcement and the instruction of above-mentioned specification, those skilled in the art in the invention can also change and revise above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection range of claim of the present invention modifications more of the present invention and change.In addition, although used some specific terms in this specification, these terms are explanation for ease just, the present invention is not constituted any restriction.
Claims (9)
1. lithium ion battery comprises electric core and the baffle that is positioned at electric core front end, it is characterized in that: comprise that also frame is located at the logical frame of the peripheral plastic cement of said electric core, the logical frame of said plastic cement is wrapped with the fire-proof insulation material layer.
2. lithium ion battery according to claim 1 is characterized in that: said fire-proof insulation material is phenolic resins, aramid fiber, polycarbonate plastic or polyurethane.
3. lithium ion battery according to claim 1 is characterized in that: the thickness of said fire-proof insulation material layer is 0.01-0.09mm.
4. lithium ion battery according to claim 3 is characterized in that: be provided with first insulating paper between said electric core and the baffle.
5. lithium ion battery according to claim 4 is characterized in that: said electric core is connected through spot welding with baffle.
6. lithium ion battery according to claim 5 is characterized in that: said baffle is wrapped with second insulating paper.
7. lithium ion battery according to claim 6 is characterized in that: said fire-proof insulation material layer posts the fire prevention label outward.
8. lithium ion battery according to claim 7 is characterized in that: said electric core is four.
9. the preparation method of a lithium ion battery is characterized in that, comprises the steps:
The first step is attached to electric core front end with first insulating paper, electric core point is welded on the baffle, again with the two or two insulating paper parcel baffle;
Second step, pack electric core and baffle in the logical frame of plastic cement into, wrap up plastic cement with the fire-proof insulation material and lead to frame; Form the fire-proof insulation material layer; Adopt bonding connection between electricity core and the fire-proof insulation material layer, and on the fire-proof insulation material layer, paste the fire prevention label, accomplish the assembling of battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110438876.0A CN102569879B (en) | 2011-12-26 | 2011-12-26 | Lithium ion battery and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110438876.0A CN102569879B (en) | 2011-12-26 | 2011-12-26 | Lithium ion battery and preparation method thereof |
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| Publication Number | Publication Date |
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| CN102569879A true CN102569879A (en) | 2012-07-11 |
| CN102569879B CN102569879B (en) | 2015-05-13 |
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| CN201110438876.0A Active CN102569879B (en) | 2011-12-26 | 2011-12-26 | Lithium ion battery and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020191721A1 (en) * | 2019-03-28 | 2020-10-01 | 深圳市大疆创新科技有限公司 | Battery cell assembly, intelligent battery, and unmanned aerial vehicle |
| CN111834576A (en) * | 2020-08-04 | 2020-10-27 | 珠海冠宇电源有限公司 | Electricity core mixes parallelly connected battery |
| CN111969168A (en) * | 2019-05-20 | 2020-11-20 | Oppo广东移动通信有限公司 | Battery pack and electronic device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1046015A (en) * | 1996-08-07 | 1998-02-17 | Teijin Chem Ltd | Flame retardant resin composition and lithium ion battery case molded therefrom |
| US20050079412A1 (en) * | 2003-06-19 | 2005-04-14 | Hyun-Joong Kim | Battery pack |
| CN101110487A (en) * | 2006-07-18 | 2008-01-23 | 株式会社Lg化学 | Secondary battery with improved safety |
| CN202405328U (en) * | 2011-12-26 | 2012-08-29 | 东莞新能德科技有限公司 | Lithium battery |
-
2011
- 2011-12-26 CN CN201110438876.0A patent/CN102569879B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1046015A (en) * | 1996-08-07 | 1998-02-17 | Teijin Chem Ltd | Flame retardant resin composition and lithium ion battery case molded therefrom |
| US20050079412A1 (en) * | 2003-06-19 | 2005-04-14 | Hyun-Joong Kim | Battery pack |
| CN101110487A (en) * | 2006-07-18 | 2008-01-23 | 株式会社Lg化学 | Secondary battery with improved safety |
| CN202405328U (en) * | 2011-12-26 | 2012-08-29 | 东莞新能德科技有限公司 | Lithium battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020191721A1 (en) * | 2019-03-28 | 2020-10-01 | 深圳市大疆创新科技有限公司 | Battery cell assembly, intelligent battery, and unmanned aerial vehicle |
| CN111969168A (en) * | 2019-05-20 | 2020-11-20 | Oppo广东移动通信有限公司 | Battery pack and electronic device |
| CN111834576A (en) * | 2020-08-04 | 2020-10-27 | 珠海冠宇电源有限公司 | Electricity core mixes parallelly connected battery |
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| Publication number | Publication date |
|---|---|
| CN102569879B (en) | 2015-05-13 |
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