CN102637833A - Lithium ion battery and preparation method thereof - Google Patents
Lithium ion battery and preparation method thereof Download PDFInfo
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- CN102637833A CN102637833A CN201110438878XA CN201110438878A CN102637833A CN 102637833 A CN102637833 A CN 102637833A CN 201110438878X A CN201110438878X A CN 201110438878XA CN 201110438878 A CN201110438878 A CN 201110438878A CN 102637833 A CN102637833 A CN 102637833A
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- lithium ion
- ion battery
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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 cell and a protection plate positioned at the front end of the cell, wherein a positive tab and a negative tab are arranged at the front end of the cell, and a whole body formed by the cell and the protection plate is externally wrapped by a fireproofing insulating material layer. Compared with the prior art, the fireproofing insulating material layer of the lithium ion battery can be directly adhered on the surface of the cell and does not need to be fixed by other parts, thereby saving the cost and manpower; as the thickness of the fireproofing insulating material layer is only 0.01mm to 0.09mm, the cell can utilize more space, so that the battery capacity is maximized, and the time of endurance of the battery is longer; as a fireproofing insulating material is a fireproofing material authenticated by UL (Underwriters Laboratories), the safety performance of the battery is higher; and the interior of the protection plate is completely wrapped by insulation paper, and an insulation spacer is arranged on the side surface of the protection plate to play a role of insulation and buffering stress, so that the safety factor of the battery is higher. In addition, the invention also discloses a preparation method of 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 electric core, 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 electric core, 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 electric core, 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 and the baffle that is positioned at electric core front end, and said electric core front end is provided with positive pole ear and negative lug, and the integral body that said electric core and baffle are formed 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 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.
As a kind of improvement of lithium ion battery of the present invention, be provided with insulation spacer between said first insulating paper and the baffle.
As a kind of improvement of lithium ion battery of the present invention, the positive pole ear of said electric core is connected through spot welding with baffle respectively with negative lug.
As a kind of improvement of lithium ion battery of the present invention, be wound with high tempreture tape respectively on the positive pole ear of some postwelding and the negative lug.
As a kind of improvement of lithium ion battery of the present invention, said baffle is enclosed with second insulating paper.Baffle adopts insulating material all to wrap up in inside, and the side has insulation spacer to play insulation and cushion stressed effect, makes coefficient of safety higher.
As a kind of improvement of lithium ion battery of the present invention, said fire-proof insulation material layer posts the fire prevention label outward.
With respect to prior art, the present invention has following advantage at least:
The first, the fire-proof insulation material layer can directly be bonded in electric wicking surface, need not fixedly fire-proof insulation material of other parts, practices thrift cost with artificial, can realize mechanical automatic lot manufacturing;
The second, the thickness of fire-proof insulation material layer has only 0.01-0.09mm, makes electric core can utilize more spaces, 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, baffle adopts insulating paper all to wrap up in inside, and the side has insulation spacer to play insulation and cushion stressed effect, makes coefficient of safety higher.
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, then insulation spacer is attached to above first insulating paper;
Second step was welded in electric core point on the baffle, divided on the positive pole ear of electric core and the negative lug and sticked high tempreture tape in addition, again with second insulating paper parcel baffle;
The 3rd step, wrap up electric core with the fire-proof insulation material, form the fire-proof insulation material layer, adopt bonding connection between electric 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 wicking surface, need not fixedly fire-proof insulation material 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.
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; Comprise electric core 2 and the baffle 7 that is positioned at electric core 2 front ends, said electric core 2 front ends are provided with positive pole ear 21 and negative lug 22, and said electric core 2 is wrapped with fire-proof insulation material layer 1 with the integral body that baffle 7 is formed.Wherein, the fire-proof insulation material can phenolic resins, aramid fiber, polycarbonate plastic or polyurethane, and these materials not only have good fire-proof function, and light weight, have certain rigidity simultaneously, can protect electric core 2.The thickness of fire-proof insulation material layer 1 is preferably 0.01-0.09mm, makes electric core 2 can utilize more spaces, makes battery capacity maximize, and cruising time is longer.The fire-proof insulation material layer 1 outer fire prevention label 3 that posts.
Be provided with first insulating paper 4 between said electric core 2 and the baffle 7; Be provided with insulation spacer 5 between first insulating paper 4 and the baffle 7; The positive pole ear 21 of said electric core 2 and negative lug 22 are connected through spot welding with baffle 7 respectively, and are wound with high tempreture tape 6 respectively on the positive pole ear 21 of some postwelding and the negative lug 22.And baffle 7 is enclosed with second insulating paper 8.
During assembling, comprise the steps:
The first step is attached to electric core 2 front ends with first insulating paper 4, then insulation spacer 5 is attached to above first insulating paper 4;
Second step was welded in 2 in electric core on the baffle 7, sticked high tempreture tape 6 respectively on the positive pole ear 21 of electric core 2 and the negative lug 22, again with second insulating paper, 8 parcel baffles 7;
The 3rd step, wrap up electric core with the fire-proof insulation material, form fire-proof insulation material layer 1, adopt bonding connection between electric core 2 and the fire-proof insulation material layer 1, and on fire-proof insulation material layer 1, paste fire prevention label 3, accomplish the assembling of battery.
In sum, 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 wicking surface, need not fixedly fire-proof insulation material 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 (10)
1. a lithium ion battery comprises electric core and the baffle that is positioned at electric core front end, and said electric core front end is provided with positive pole ear and negative lug, it is characterized in that: the integral body that said electric core and baffle are formed 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: be provided with insulation spacer between said first insulating paper and the baffle.
6. lithium ion battery according to claim 5 is characterized in that: the positive pole ear of said electric core is connected through spot welding with baffle respectively with negative lug.
7. lithium ion battery according to claim 6 is characterized in that: be wound with high tempreture tape respectively on the positive pole ear of some postwelding and the negative lug.
8. lithium ion battery according to claim 7 is characterized in that: said baffle is enclosed with second insulating paper.
9. lithium ion battery according to claim 8 is characterized in that: said fire-proof insulation material layer posts the fire prevention label outward.
10. 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, then insulation spacer is attached to above first insulating paper;
Second step was welded in electric core point on the baffle, sticked high tempreture tape on the positive pole ear of electric core and the negative lug respectively, again with second insulating paper parcel baffle;
The 3rd step, wrap up electric core with the fire-proof insulation material, form the fire-proof insulation material layer, adopt bonding connection between electric 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 |
|---|---|---|---|
| CN201110438878XA CN102637833A (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 |
|---|---|---|---|
| CN201110438878XA CN102637833A (en) | 2011-12-26 | 2011-12-26 | Lithium ion battery and preparation method thereof |
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| CN102637833A true CN102637833A (en) | 2012-08-15 |
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| CN201110438878XA Pending CN102637833A (en) | 2011-12-26 | 2011-12-26 | Lithium ion battery and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825051A (en) * | 2013-10-17 | 2014-05-28 | 珠海光宇电池有限公司 | Polymer lithium ion battery and manufacturing method thereof |
| CN106876790A (en) * | 2016-12-28 | 2017-06-20 | 深圳天珑无线科技有限公司 | A kind of polymer battery and electronic equipment |
| CN108346816A (en) * | 2017-01-22 | 2018-07-31 | 微宏动力***（湖州）有限公司 | A kind of lithium rechargeable battery and preparation method thereof |
| CN113725502A (en) * | 2021-06-01 | 2021-11-30 | 荣耀终端有限公司 | Battery and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130694Y (en) * | 2007-08-22 | 2008-10-08 | 惠州市德赛电池有限公司 | Encapsulation structure of polyalcohol flexible electric core |
| CN101692503A (en) * | 2008-01-30 | 2010-04-07 | 索尼株式会社 | Battery pack and method for producing the same |
| CN102263284A (en) * | 2011-06-30 | 2011-11-30 | 奇瑞汽车股份有限公司 | Cell structure |
-
2011
- 2011-12-26 CN CN201110438878XA patent/CN102637833A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130694Y (en) * | 2007-08-22 | 2008-10-08 | 惠州市德赛电池有限公司 | Encapsulation structure of polyalcohol flexible electric core |
| CN101692503A (en) * | 2008-01-30 | 2010-04-07 | 索尼株式会社 | Battery pack and method for producing the same |
| CN102263284A (en) * | 2011-06-30 | 2011-11-30 | 奇瑞汽车股份有限公司 | Cell structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825051A (en) * | 2013-10-17 | 2014-05-28 | 珠海光宇电池有限公司 | Polymer lithium ion battery and manufacturing method thereof |
| CN106876790A (en) * | 2016-12-28 | 2017-06-20 | 深圳天珑无线科技有限公司 | A kind of polymer battery and electronic equipment |
| CN108346816A (en) * | 2017-01-22 | 2018-07-31 | 微宏动力***（湖州）有限公司 | A kind of lithium rechargeable battery and preparation method thereof |
| CN108346816B (en) * | 2017-01-22 | 2021-01-15 | 微宏动力***（湖州）有限公司 | Lithium ion secondary battery and preparation method thereof |
| CN113725502A (en) * | 2021-06-01 | 2021-11-30 | 荣耀终端有限公司 | Battery and electronic equipment |
| CN113725502B (en) * | 2021-06-01 | 2024-03-12 | 荣耀终端有限公司 | Battery and electronic equipment |
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Application publication date: 20120815 |