CN204614860U - A kind of battery pole piece and ultra-thin flexible-packed battery - Google Patents
A kind of battery pole piece and ultra-thin flexible-packed battery Download PDFInfo
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- CN204614860U CN204614860U CN201520308786.3U CN201520308786U CN204614860U CN 204614860 U CN204614860 U CN 204614860U CN 201520308786 U CN201520308786 U CN 201520308786U CN 204614860 U CN204614860 U CN 204614860U
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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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Abstract
For overcoming the problem that in prior art, flexible-packed battery thickness is large, the utility model provides a kind of battery pole piece, comprises collector, electrode material layer and lug; Described collection liquid surface has clear area and dressing district; Described clear area is positioned at the edge of described collection liquid surface, and described clear area and dressing district all extend along pole piece coiling direction; Described electrode material layer is attached in described dressing district; Described tab welding in described clear area, and extends to outside collector along the direction perpendicular with described pole piece coiling direction.Meanwhile, the invention also discloses the ultra-thin flexible-packed battery adopting above-mentioned battery pole piece.The ultra-thin flexible-packed battery thickness of the battery pole piece provided based on the utility model is little, and capacity is high.
Description
Technical field
The utility model relates to a kind of battery pole piece and adopts the ultra-thin flexible-packed battery of this battery pole piece.
Background technology
Modern society's information is flourishing, various release such as magnetic card, smart card (IC-card), identification card (ID card), bank card, radio-frequency card (electronic tag, RFID), Electronic Paper etc. are arisen at the historic moment, the not charged of card in the past, amount of information is little, confidentiality is poor, developing the card of charged, improve amount of information and confidentiality, demand is proposed to ultra-thin battery.
By the requirement of application, the lithium battery thickness of card-like electronic product is usually very thin.And existing polyalcohol flexible packing lithium rechargeable battery minimum thickness is all at more than 2mm, be difficult to the user demand meeting card-like electronic product.
Such as, in prior art, in conventional ultra-thin flexible-packed battery, the current collector structure of electrode plates as shown in Figure 1.Collector 10 surface is divided into the clear area 120 for soldering polar ear 20 and the dressing district 110 for electrode coated material.Along (as on direction from left to right in Fig. 1) on the direction of pole piece coiling, clear area 120 is positioned at one end of collector 10, and dressing district 110 extends from clear area 120 along pole piece coiling direction.The battery pole piece structure that above-mentioned collector 10 basis prepares as shown in Figure 2.Lug 20 is welded in the clear area 120 of collector 10, and extends to collector 10 from clear area 120 along the direction perpendicular with pole piece coiling direction.Electrode material 30 is coated with in dressing district 110.
But the flexible-packed battery thickness of said structure is still thicker.
Utility model content
Technical problem to be solved in the utility model is for the large problem of flexible-packed battery thickness in prior art, provides a kind of battery pole piece.
It is as follows that the utility model solves the problems of the technologies described above adopted technical scheme:
A kind of battery pole piece is provided, comprises collector, electrode material layer and lug; Described collection liquid surface has clear area and dressing district; Described clear area is positioned at the edge of described collection liquid surface, and described clear area and dressing district all extend along pole piece coiling direction; Described electrode material layer is attached in described dressing district; Described tab welding in described clear area, and extends to outside collector along the direction perpendicular with described pole piece coiling direction.
Further, described collector thickness is 2.0-20.0 μm.
Further, the width of described clear area is 1.0-10.0mm.
Further, the thickness of described electrode material layer is 0.02--0.20mm.
Further, described collector is Copper Foil or aluminium foil.
Further, be pasted with diaphragm in described clear area, described diaphragm at least covers the pad of described lug and collector.
Meanwhile, the utility model additionally provides a kind of ultra-thin flexible-packed battery, comprises encapsulating film and is packaged in the battery core in described encapsulating film; Described battery core comprises the anode pole piece, barrier film, the cathode pole piece that stack gradually; Described anode pole piece and/or cathode pole piece are the battery pole piece of said structure.
Further, described cathode pole piece comprises two the mutually stacked sub-pole pieces of negative pole formed along the turnover of described pole piece coiling direction; The width of described two sub-pole pieces of negative pole is identical with described battery core width; Described barrier film and anode pole piece are between described two sub-pole pieces of negative pole.
Further, the positive pole ear of described anode pole piece and the negative lug of cathode pole piece are arranged in the same way.
Further; diaphragm is pasted with in the clear area of the collector of described anode pole piece and/or cathode pole piece; described diaphragm covers the pad of described positive pole ear and/or negative lug and collector, and the length of described diaphragm is identical with the width of described battery core.
Further, the thickness of described ultra-thin flexible-packed battery is 0.3-1.0mm.
Utility model people of the present utility model finds, existing electrode plates is as depicted in figs. 1 and 2 in winding or turnover lamination process, the lug being welded in clear area is positioned on the electrode material in collector dressing district, causes lug place local thickness excessive, thus causes cell thickness excessive.In the utility model, the clear area on collector is arranged along the coiling direction of pole piece, when preparing battery core, owing to being stained with electrode material in dressing district, under the state of anode pole piece and the tight pressing of cathode pole piece, still has space between clear area.The lug being welded in clear area is positioned at this space, and local thickness can not be caused too high, is beneficial to and reduces battery core thickness.The thickness of the ultra-thin flexible-packed battery prepared on this basis is thinner.
Accompanying drawing explanation
Fig. 1 is the structural representation of electrode current collecting body of the prior art;
Fig. 2 is the structural representation of electrode plates of the prior art;
Fig. 3 is the structural representation before the cathode pole piece pasting protective film that provides of the utility model preferred implementation;
Fig. 4 is the structural representation of the cathode pole piece that the utility model preferred implementation provides;
Fig. 5 is the structural representation of the cathode pole piece lamination state that the utility model preferred implementation provides;
Fig. 6 is the structural representation of the anode pole piece that the utility model preferred implementation provides;
Fig. 7 is the structural representation of the battery core that the utility model preferred implementation provides;
Fig. 8 is the Facad structure schematic diagram of the ultra-thin flexible-packed battery that the utility model preferred implementation provides;
Fig. 9 is the end view of the ultra-thin flexible-packed battery that the utility model preferred implementation provides;
Figure 10 is A place partial enlarged drawing in Fig. 9.
Reference numeral in Figure of description is as follows:
121, negative pole clear area;
21, negative lug; 22, positive pole ear;
31, negative electrode material layer; 32, positive electrode material layer;
41, negative pole diaphragm; 42, positive pole diaphragm;
5, encapsulating film.
Embodiment
The technical problem solved to make the utility model, technical scheme and beneficial effect are clearly understood, below in conjunction with drawings and Examples, are further elaborated to the utility model.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In description of the present utility model, it will be appreciated that, term " length ", " width ", " thickness ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " setting ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
The battery pole piece that the utility model provides comprises collector, electrode material layer and lug; Described collection liquid surface has clear area and dressing district; Described clear area is positioned at the edge of described collection liquid surface, and described clear area and dressing district all extend along pole piece coiling direction; Described electrode material layer is attached in described dressing district; Described tab welding in described clear area, and extends to outside collector along the direction perpendicular with described pole piece coiling direction.
Usually, battery pole piece comprises collector, and collector is attached with electrode material layer.Meanwhile, collector and tab welding.As existing, the battery pole piece that the utility model provides also comprises collector, electrode material layer and lug.
For above-mentioned collector, its material can commonly use by this area, such as, according to specifically using needs, Copper Foil or aluminium foil can be adopted.The thickness of collector can change in a big way, and for ultra-thin flexible-packed battery, the thickness of collector is preferably 2-20 μm.
In the utility model, described collection liquid surface has clear area and dressing district; Described clear area is positioned at the edge of described collection liquid surface.
Usually, make in battery core process at employing battery pole piece, need reel to pole piece or turn down lamination.Understandable, the pole piece coiling direction described in the utility model is not defined through winding preparation battery core, and only describes in follow-up making battery core process, may reel or turn down direction during pole piece.In ultra-thin flexible-packed battery field, before above-mentioned pole piece coiling direction roughly can be interpreted as cut-parts, the length direction of collector.
According to the utility model, described clear area and dressing district all extend along pole piece coiling direction.That is, clear area adjoins each other with dressing district and parallel extending along pole piece coiling direction.
The above-mentioned clear area arranged in the utility model is used for providing space for tab welding, makes the thickness of battery pole piece thin.In the utility model, under preferable case, the width of described clear area is 1.0-10.0mm.Understandable, the Width of above-mentioned clear area is interpreted as the direction perpendicular with clear area bearing of trend.
According to the utility model, tab welding is in above-mentioned clear area, and lug extends to outside collector along the direction perpendicular with described pole piece coiling direction.Now, after follow-up winding in lamination process, lug is still positioned at collector outside.Above-mentioned lug material, structure and welding method are existing, be not particularly limited, do not repeat them here in the utility model.
As existing, in the utility model, the dressing district of collection liquid surface is used for adhesive electrodes material layer.
In the battery pole piece that the utility model provides, electrode material is not particularly limited, the electrode material of this area routine can be adopted, such as, when the battery pole piece structure that cathode pole piece adopts the utility model to provide, above-mentioned electrode material is conventional negative material; When the battery pole piece structure that anode pole piece adopts the utility model to provide, above-mentioned electrode material is conventional positive electrode.
Less for ensureing the thickness of battery pole piece, take into account capacity, in the utility model, under preferable case, the thickness of described electrode material layer is 0.02-0.20mm simultaneously.
In ultra-thin flexible-packed battery, collector thickness is very thin, is convenient to breakage occurs for avoiding collector in the course of processing; in the utility model; under preferable case, in the clear area of described collector, be pasted with diaphragm, described diaphragm at least covers the pad of described lug and collector.
More preferably, in situation, the length of said protection film is identical with the width of the required battery core prepared.
The battery pole piece of the said structure that the utility model provides does not limit concrete electrode, and the cathode pole piece in ultra-thin flexible-packed battery or anode pole piece can adopt said structure separately individually or simultaneously.More preferably, in situation, cathode pole piece and anode pole piece adopt said structure simultaneously.
Meanwhile, the utility model additionally provides a kind of ultra-thin flexible-packed battery, comprises encapsulating film and is packaged in the battery core in described encapsulating film; Described battery core comprises the cathode pole piece, barrier film, the anode pole piece that stack gradually; Described cathode pole piece and/or anode pole piece are the battery pole piece of said structure.
For above-mentioned battery core, can conventionally prepare.In the utility model, under preferable case, described cathode pole piece comprises two the mutually stacked sub-pole pieces of negative pole formed along the turnover of described pole piece coiling direction; The width of described two sub-pole pieces of negative pole is identical with described battery core width; Described barrier film and anode pole piece are between described two sub-pole pieces of negative pole.
Meanwhile, in above-mentioned battery core, the negative lug of described cathode pole piece and the positive pole ear of anode pole piece are arranged in the same way.
As previously mentioned; diaphragm is pasted with in the clear area of the collector of described cathode pole piece and/or anode pole piece; described diaphragm covers the pad of described negative lug and/or positive pole ear and collector, and the length of described diaphragm is identical with the width of described battery core.
According to the utility model, the thickness of the ultra-thin flexible-packed battery that above-mentioned battery pole piece basis prepares wraps very much, can reach 0.3-1.0mm.Meanwhile, the capacity of above-mentioned ultra-thin flexible-packed battery is high.
Fig. 3 to Figure 10 shows the structure of battery pole piece, the battery core prepared based on this battery pole piece and the ultra-thin flexible-packed battery that the utility model preferred implementation provides.
Concrete, Fig. 3-Fig. 5 shows the concrete structure of cathode pole piece.This cathode pole piece comprises negative current collector.Negative current collector is rectangular-shaped.The length direction of negative current collector is the turnover direction (coiling direction) of cathode pole piece.The length of negative current collector for needed for the twice of battery core width for preparing.
Negative pole currect collecting surface is divided into the negative pole clear area 121 and negative pole dressing district that adjoin each other from top to bottom.Negative pole clear area 121 and negative pole dressing district all extend to right-hand member from the left end of negative current collector.
Negative pole dressing is attached with negative electrode material layer 31 in district.
A negative lug 21 is welded with in negative pole clear area 121.The bottom of negative lug 21 is welded in negative pole clear area 121, and negative lug 21 is arranged along the vertical direction.
Meanwhile, the negative pole diaphragm 41 of strip is also pasted with in negative pole clear area 121.Negative pole diaphragm 41 extends to the middle part of negative pole clear area 121 to the right from the high order end of negative pole clear area 121, and its length is the half of negative current collector.Further, negative pole diaphragm 41 covers the weld of negative lug 21 and negative pole clear area 121.
Specifically see Fig. 5, after this cathode pole piece turns down in left-right direction, form the sub-pole piece of negative pole that two sizes are identical.Two sub-pole pieces of negative pole are interconnected and are integrated.
Fig. 6 shows the concrete structure of anode pole piece.The concrete structure of this anode pole piece is substantially identical with cathode pole piece, and difference is that the width of plus plate current-collecting body is less than negative current collector width, and plus plate current-collecting body width is identical with battery core width.
Positive electrode material layer 32 is attached with in anode dressing district.Positive pole ear 22 is arranged along the vertical direction, and the lower end of positive pole ear 22 is welded in positive pole clear area.Positive pole diaphragm 42 is pasted with in positive pole clear area.Positive pole diaphragm 42 covers whole positive pole clear area.
Fig. 7 shows the battery core prepared based on above-mentioned cathode pole piece and anode pole piece.Concrete, as previously mentioned, cathode pole piece forms two sub-pole pieces of negative pole.Above-mentioned anode pole piece and barrier film are arranged between two mutually stacked sub-pole pieces of negative pole.Negative lug 21 and positive pole ear 22 are arranged in the same way, and lay respectively at the two ends on the Width of battery core.
Fig. 8-Figure 10 is the ultra-thin flexible-packed battery prepared by above-mentioned battery core.Concrete, above-mentioned battery core is packaged in encapsulating film 5, and negative lug 21 and positive pole ear 22 are exposed to outside encapsulating film 5.Specifically see Fig. 9 and Figure 10, visible, this ultra-thin flexible-packed battery integral thickness is even, and very thin.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (11)
1. a battery pole piece, is characterized in that, comprises collector, electrode material layer and lug;
Described collection liquid surface has clear area and dressing district; Described clear area is positioned at the edge of described collection liquid surface, and described clear area and dressing district all extend along pole piece coiling direction;
Described electrode material layer is attached in described dressing district;
Described tab welding in described clear area, and extends to outside collector along the direction perpendicular with described pole piece coiling direction.
2. battery pole piece according to claim 1, is characterized in that, described collector thickness is 2.0-20.0 μm.
3. battery pole piece according to claim 1, is characterized in that, the width of described clear area is 1.0-10.0mm.
4. battery pole piece according to claim 1, is characterized in that, the thickness of described electrode material layer is 0.02-0.20mm.
5. battery pole piece according to claim 1, is characterized in that, described collector is Copper Foil or aluminium foil.
6. according to the battery pole piece in claim 1-5 described in any one, it is characterized in that, be pasted with diaphragm in described clear area, described diaphragm at least covers the pad of described lug and collector.
7. a ultra-thin flexible-packed battery, is characterized in that, comprises encapsulating film and is packaged in the battery core in described encapsulating film;
Described battery core comprises the anode pole piece, barrier film, the cathode pole piece that stack gradually;
Described anode pole piece and/or cathode pole piece are the battery pole piece in claim 1-6 described in any one.
8. ultra-thin flexible-packed battery according to claim 7, is characterized in that, described cathode pole piece comprises two the mutually stacked sub-pole pieces of negative pole formed along the turnover of described pole piece coiling direction;
The width of described two sub-pole pieces of negative pole is identical with described battery core width;
Described barrier film and anode pole piece are between described two sub-pole pieces of negative pole.
9. ultra-thin flexible-packed battery according to claim 7, is characterized in that, the positive pole ear of described anode pole piece and the negative lug of cathode pole piece are arranged in the same way.
10. according to the ultra-thin flexible-packed battery in claim 7-9 described in any one; it is characterized in that; diaphragm is pasted with in the clear area of the collector of described anode pole piece and/or cathode pole piece; described diaphragm covers the pad of described positive pole ear and/or negative lug and collector; further, the length of described diaphragm is identical with the width of described battery core.
11. ultra-thin flexible-packed batteries according to claim 7, is characterized in that, the thickness of described ultra-thin flexible-packed battery is 0.3-1.0mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520308786.3U CN204614860U (en) | 2015-05-13 | 2015-05-13 | A kind of battery pole piece and ultra-thin flexible-packed battery |
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| CN201520308786.3U CN204614860U (en) | 2015-05-13 | 2015-05-13 | A kind of battery pole piece and ultra-thin flexible-packed battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299239A (en) * | 2015-05-13 | 2017-01-04 | 深圳市博亿能科技有限公司 | A kind of battery pole piece and ultra-thin flexible-packed battery |
| CN106531951A (en) * | 2016-12-19 | 2017-03-22 | 东莞市科睿思美新能源科技有限公司 | Intelligent IC card, ultrathin battery and pole piece with tab of ultrathin battery |
| CN109888186A (en) * | 2019-03-06 | 2019-06-14 | 广州丰江电池新技术股份有限公司 | The pole piece of thin lithium ion battery assembles localization method |
| WO2022247665A1 (en) | 2021-05-28 | 2022-12-01 | 微宏动力系统（湖州）有限公司 | Tab electrode plate and wound battery |
-
2015
- 2015-05-13 CN CN201520308786.3U patent/CN204614860U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299239A (en) * | 2015-05-13 | 2017-01-04 | 深圳市博亿能科技有限公司 | A kind of battery pole piece and ultra-thin flexible-packed battery |
| CN106531951A (en) * | 2016-12-19 | 2017-03-22 | 东莞市科睿思美新能源科技有限公司 | Intelligent IC card, ultrathin battery and pole piece with tab of ultrathin battery |
| CN109888186A (en) * | 2019-03-06 | 2019-06-14 | 广州丰江电池新技术股份有限公司 | The pole piece of thin lithium ion battery assembles localization method |
| WO2022247665A1 (en) | 2021-05-28 | 2022-12-01 | 微宏动力系统（湖州）有限公司 | Tab electrode plate and wound battery |
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Effective date of registration: 20180730 Address after: 518067 18D, 13 peach garden, Shekou, Nanshan District, Shenzhen, Guangdong. Patentee after: Zhou Zhicai Address before: 518127 Guangdong Shenzhen Baoan District Songgang street Luotian community third industrial area Hutian science and Technology Park Nine Patentee before: Shenzhen Boyineng Technology Co.,Ltd. |
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Effective date of registration: 20190530 Address after: 562400 15 Sajin Handicraft Industrial Park, Pingdong Street, Xingyi City, Buyi and Miao Autonomous Prefecture, Southwest Guizhou Province Patentee after: Guizhou Wanfeng Boyineng Technology Co.,Ltd. Address before: 518067 18D, 13 peach garden, Shekou, Nanshan District, Shenzhen, Guangdong. Patentee before: Zhou Zhicai |
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Effective date of registration: 20230920 Address after: D203, Building CD, No. 1 Chuangye, No. 43 Yanshan Road, Yanshan Community, Nanshan District, Shenzhen City, Guangdong Province, 518000 Patentee after: Shenzhen Zhongrui Power Technology Co.,Ltd. Address before: 562400 15 Sajin Handicraft Industrial Park, Pingdong Street, Xingyi City, Buyi and Miao Autonomous Prefecture, Southwest Guizhou Province Patentee before: Guizhou Wanfeng Boyineng Technology Co.,Ltd. |