CN102569879B - Lithium ion battery and preparation method thereof - Google Patents
Lithium ion battery and preparation method thereof Download PDFInfo
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- CN102569879B CN102569879B CN201110438876.0A CN201110438876A CN102569879B CN 102569879 B CN102569879 B CN 102569879B CN 201110438876 A CN201110438876 A CN 201110438876A CN 102569879 B CN102569879 B CN 102569879B
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- fire
- battery core
- insulating material
- lithium 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
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 fire-retardant insulating material layer directly to wrap up plastic cement leads to that frame, structure are simple, assembling fast, maximum capacity and high lithium ion battery of security performance and preparation method thereof.
Background technology
As the one of clean energy resource, to have voltage high due to it for lithium ion battery, and the discharge and recharge life-span is long, the plurality of advantages such as the little and self-discharge rate of environmental pollution is low, have been widely used in each electronic product, as smart mobile phone, notebook computer, digital camera and portable compact electric apparatus etc.
Along with people's improving constantly the small form factor requirements of electronic product, lithium ion battery also requires to accomplish slimming, lightness accordingly, accomplishes high-energy-density, high capacity and high safe simultaneously.
At present, the packaging structure of lithium ion battery generally comprises protecgulum, bonnet, shell and baffle etc., protecgulum and general by bonding connection between bonnet with battery core, or is welded to connect.Shell is generally metal or plastic cement material, and shell and protecgulum and bonnet generally by bonding or be welded to connect, or adopt the method for injection moulding integrated molding.Between battery core and shell, and the fill gaps fluid sealant between protecgulum and battery core, between bonnet and battery core, be unlikely to make battery core to rock.Protecgulum and bonnet need injection moulding to form certain thickness frame, and with proof strength, cause wasting space large, energy density can not improve, and can not meet the demand of slimming lithium ion battery; And assembly technology is complicated, is unfavorable for enhancing productivity and reducing production cost.
And these shells are not all fire proofing materials, when accidents such as battery generation internal short-circuits, easily cause the danger such as on fire or blast, security performance is not high.
In view of this, necessary provide adopt fire-retardant insulating material layer directly to wrap up plastic cement leads to that frame, structure are simple, assembling fast, maximum capacity and high lithium ion battery of security performance and preparation method thereof.
Summary of the invention
An object of the present invention is: for the deficiencies in the prior art, and provide a kind of adopt fire-retardant insulating material layer directly to wrap up plastic cement leads to that frame, structure are simple, 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 battery core, is positioned at the baffle of battery core front end, and the plastic cement that described battery core periphery is located at by frame leads to frame, and described plastic cement leads to frame and is wrapped with fire-retardant insulating material layer.Use fire-retardant insulating material layer to improve fire protecting performance, fire-protection rating can reach VTM-0 (highest ranking in UL94 plastic fireproof ranking system), and then improves security performance.And plastic cement lead to frame thickness direction on the consistency of thickness of battery core, makes battery core utilize thickness space more, increase the capacity of battery core, and structure is simple, can meet the demand of existing market.
One as lithium ion battery of the present invention is improved, and described fire-retardant insulating material is phenolic resins, aramid fiber, polycarbonate plastic or polyurethane.These materials not only have good fire protecting performance, and quality is light, also has certain hardness simultaneously, can play the effect of protection battery core.
One as lithium ion battery of the present invention is improved, and the thickness of described fire-retardant insulating material layer is 0.01-0.09mm.This is because equal battery size, the lapping of super book makes battery core can utilize more spaces, increases the capacity of battery core.
One as lithium ion battery of the present invention is improved, and is provided with the first insulating paper between described battery core and baffle.
One as lithium ion battery of the present invention is improved described battery core and is connected by spot welding with baffle.
One as lithium ion battery of the present invention is improved described baffle and is wrapped with the second insulating paper.Baffle adopts insulating paper all to wrap up in inside, make the coefficient of safety of battery higher.
One as lithium ion battery of the present invention is improved outside described fire-retardant insulating material layer and is posted fire prevention label.
It is four that one as lithium ion battery of the present invention improves described battery core.Four battery core symmetries are placed, and baffle can design to minimum dimension, saves design space, can strengthen the capacity of battery core.
Relative to prior art, the present invention at least tool has the following advantages:
The first, fire-retardant insulating material can directly be bonded in battery core and plastic cement leads to frame table face, without the need to other parts fixing parcel core material, cost-saving and artificial, can realize mechanical full-automatic batch micro operations;
The second, plastic cement leads to frame makes battery core can utilize more thickness space, and battery capacity is maximized, and cruising time is longer;
3rd, fire-retardant insulating material uses the fire proofing material of UL certification, and fire-protection rating can reach VTM-0 (highest ranking in UL94 plastic fireproof ranking system), and then improves security performance;
4th, fire-retardant insulating material directly wraps up plastic cement and leads to frame and make whole product become as a whole, and structural strength strengthens, and improves product safety coefficient;
5th, battery core is symmetrical placement, and baffle can design to minimum dimension, saves design space, can strengthen the capacity of battery core.
Another object of the present invention is the preparation method providing a kind of lithium ion battery, comprises the steps:
The first step, is attached to battery core front end by the first insulating paper, is welded on baffle by battery core point, then wraps up baffle with the second insulating paper;
Second step, loads plastic cement battery core and baffle and leads in frame, leads to frame with fire-retardant insulating material parcel plastic cement; form fire-retardant insulating material layer; adopt bonding connection between battery core and fire-retardant insulating material layer, and on fire-retardant insulating material layer, paste fire prevention label, complete the assembling of battery.
Relative to prior art, the preparation method of lithium ion battery of the present invention is simple to operate, and fire-retardant insulating material layer can directly be bonded in battery core and plastic cement leads to frame table face, fire-retardant insulating material is fixed without the need to other parts, cost-saving and artificial, operating efficiency is high, can realize mechanical full-automatic batch micro operations; And obtained lithium ion battery has that security performance is high, thickness is thin, quality is light and the feature that energy density is high, is applicable in the electronic equipment of miniaturization, lightness.
Accompanying drawing explanation
Fig. 1 is explosive view of the present invention;
Fig. 2 is isometric front view of the present invention;
Fig. 3 is 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 embodiments of the present invention are not limited thereto.
As shown in Figure 1,2 and 3; lithium ion battery of the present invention; comprise battery core 5, be positioned at the baffle 6 of battery core 5 front end, and the plastic cement that described battery core 5 periphery is located at by frame leads to frame 3, described plastic cement leads to frame 3 and is wrapped with fire-retardant insulating material layer 2; wherein; the quantity of battery core 5 is 4, becomes symmetrical and places, baffle can be designed to minimum dimension; save design space, the capacity of battery core 5 can be strengthened.Accordingly, the size of size and four battery cores 5 that plastic cement leads to frame 3 matches, and in a thickness direction, plastic cement leads to the thickness of frame 3 and the consistency of thickness of battery core 5.
Wherein, described fire-retardant insulating material is phenolic resins, aramid fiber, polycarbonate plastic or polyurethane.。These materials not only have good fire protecting performance, and quality is light, also has certain hardness simultaneously, can play the effect of protection battery core 5.The thickness of described fire-retardant insulating material layer 2 is 0.01-0.09mm.
Wherein, be provided with the first insulating paper 7 between described battery core 5 and baffle 6, battery core 5 is connected by spot welding with baffle 6, and baffle 6 is wrapped with the second insulating paper 4, posts fire prevention label 1 outside fire-retardant insulating material layer 2.
During assembling, comprise the steps:
The first step, is attached to battery core 5 front end by the first insulating paper 7, battery core 5 is welded on baffle 6, then wraps up baffle 6 with the second insulating paper 4;
Second step, loads plastic cement battery core 5 and baffle 6 and leads in frame 3, leads to frame 3 with fire-retardant insulating material parcel plastic cement; form fire-retardant insulating material layer 2; adopt bonding connection between battery core 5 and fire-retardant insulating material layer 2, and on fire-retardant insulating material layer 2, paste fire prevention label 1, complete the assembling of battery.
In sum, the preparation method of lithium ion battery of the present invention is simple to operate, and fire-retardant insulating material layer 2 directly can be bonded in battery core 5 and plastic cement leads to frame 3 surface, fixes fire-retardant insulating material layer 2 without the need to other parts, cost-saving and artificial; And obtained lithium ion battery has that security performance is high, thickness is thin, quality is light and the feature that energy density is high, is applicable in the electronic equipment of miniaturization, lightness.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change above-mentioned execution mode and revise.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection range of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (5)
1. a lithium ion battery, comprise battery core and the baffle being positioned at battery core front end, it is characterized in that: also comprise the plastic cement that frame is located at described battery core periphery and lead to frame, described plastic cement leads to frame and is wrapped with fire-retardant insulating material layer, and described fire-retardant insulating material layer is directly bonded in described battery core and described plastic cement leads to frame table face, the thickness of described fire-retardant insulating material layer is 0.01-0.09mm, and be provided with the first insulating paper between described battery core and baffle, described baffle is wrapped with the second insulating paper; Described battery core is four, becomes symmetrical and places; The size of size and four described battery cores that described plastic cement leads to frame matches, and in a thickness direction, described plastic cement leads to the thickness of frame and the consistency of thickness of described battery core.
2. lithium ion battery according to claim 1, is characterized in that: described fire-retardant insulating material is phenolic resins, aramid fiber, polycarbonate plastic or polyurethane.
3. lithium ion battery according to claim 1, is characterized in that: described battery core is connected by spot welding with baffle.
4. lithium ion battery according to claim 2, is characterized in that: post fire prevention label outside described fire-retardant insulating material layer.
5. a preparation method for the lithium ion battery described in any one of claim 1-4, is characterized in that, comprises the steps:
The first step, is attached to battery core front end by the first insulating paper, is welded on baffle by battery core point, then wraps up baffle with the second insulating paper;
Second step, loads plastic cement battery core and baffle and leads in frame, leads to frame with fire-retardant insulating material parcel plastic cement; form fire-retardant insulating material layer; adopt bonding connection between battery core and fire-retardant insulating material layer, and on fire-retardant insulating material layer, paste fire prevention label, complete the assembling of battery.
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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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| 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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| CN102569879A CN102569879A (en) | 2012-07-11 |
| CN102569879B true 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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111295776A (en) * | 2019-03-28 | 2020-06-16 | 深圳市大疆创新科技有限公司 | Electricity core subassembly, intelligent battery and unmanned aerial vehicle |
| CN111969168B (en) * | 2019-05-20 | 2023-03-17 | 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3550255B2 (en) * | 1996-08-07 | 2004-08-04 | 帝人化成株式会社 | Flame retardant resin composition and lithium ion battery case molded therefrom |
| KR100553200B1 (en) * | 2003-06-19 | 2006-02-22 | 삼성에스디아이 주식회사 | Battery pack |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN102569879A (en) | 2012-07-11 |
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