CN202503058U - Lug position structure for positive electrode piece and negative electrode piece of polymer lithium ion battery - Google Patents
Lug position structure for positive electrode piece and negative electrode piece of polymer lithium ion battery Download PDFInfo
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- CN202503058U CN202503058U CN201220052278XU CN201220052278U CN202503058U CN 202503058 U CN202503058 U CN 202503058U CN 201220052278X U CN201220052278X U CN 201220052278XU CN 201220052278 U CN201220052278 U CN 201220052278U CN 202503058 U CN202503058 U CN 202503058U
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- lug
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- ion battery
- electrode piece
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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
The utility model discloses a lug position structure for a positive electrode piece and a negative electrode piece of a polymer lithium ion battery. The lug position structure comprises a lug, an electrode piece, lug adhesive and insulation paste. The lug is connected at the front end of the electrode piece, the lug adhesive is arranged on the lug, the insulation paste is covered on the front and on the back of a lug gap portion at the lug position, and the gap portion at the lug position is completely covered. Since the front and the back of the gap portion at the lug position are covered by the insulation paste, exposure of a metal portion of the lug can be completely avoided, short circuit among the exposed metal portion of the lug and the positive electrode piece and the negative electrode piece, especially short circuits in procedures such as winding, flattening and top-side sealing of bare battery cores during production of the polymer lithium ion battery can be prevented effectively, and safety problems of the battery such as fuming or burning are avoided.
Description
Technical field
The utility model relates to the safe manufacturing technical field of polymer Li-ion battery, is specifically related to a kind of positive/negative plate lug bit architecture with polymer Li-ion battery of high security.
Background technology
Polymer Li-ion battery is owing to characteristics such as its security performance are high, energy density is high, in light weight, can make to measure; Application in fields such as mobile electronic device such as 3C/3G mobile phone, notebook computer, panel computer, video camera and portable portable power sources is increasingly extensive, and replaces liquid aluminum hull or box hat lithium ion battery more and more.
The positive/negative plate of polymer Li-ion battery is its core part; Although polymer Li-ion battery has good relatively fail safe; But polymer Li-ion battery (is example with the takeup type) is when its size big (battery of particularly thicker broad again), when energy density is higher; If the structural design of inner positive/negative plate is bad, with the security performance that influences battery to a great extent.
The positive/negative plate of polymer Li-ion battery two-sided for being coated with lamella, the centre is respectively aluminium foil, Copper Foil collector.Leave blank collector at front end, so that soldering polar ear is drawn the positive/negative plate of battery near positive/negative plate.In polymer Li-ion battery, in the lug position of positive/negative plate, the edge of the lower end of lug glue (being generally modified poly ethylene PE glue) and the pole piece of welding leaves an intersegmental crack.Insulation often causes the short circuit between lug and positive/negative plate easily if the positive and negative lug in exposed gap not have well, thereby initiation is smoldered or safety problem such as burning easily.Simultaneously in the production process of polymer Li-ion battery; In the operations such as top side envelope of naked electric core, the naked electric core of concora crush, naked electric core of reeling; Exposed positive and negative lug gap portion contacts with the pole piece of filming easily; The chance that the both positive and negative polarity short circuit takes place increases greatly, so effective insulation of the gap portion of place, lug position lug is of crucial importance.
The common way of effective insulation that guarantees the gap portion of lug at present is to paste the insulating cement of a whole piece at the lap of pole piece soldering polar ear; Often do not cover the gap portion of place, lug position lug; Perhaps there is part to cover; But still stayed the gap, therefore buried potential safety hazard for the normal use of polymer Li-ion battery.
Thereby prior art is still waiting to improve and improve.
The utility model content
The purpose of the utility model is to provide a kind of positive/negative plate lug bit architecture with polymer Li-ion battery of high security, to solve the problem that has potential safety hazard when polymer Li-ion battery uses in the prior art.
In order to achieve the above object, the utility model has been taked following technical scheme:
A kind of positive/negative plate lug bit architecture of polymer Li-ion battery; Comprise: lug, pole piece, lug glue and insulating cement; Said lug connects the front end of pole piece, and lug glue is arranged on the lug, it is characterized in that; Said insulating cement covers the tow sides of place, lug position lug gap portion, and place, ear position lug gap portion is covered fully.
The positive/negative plate lug bit architecture of described polymer Li-ion battery, wherein, cover part, said insulating cement upper end lug glue, cover part, lower end pole piece.
The positive/negative plate lug bit architecture of described polymer Li-ion battery, wherein, the overlay length of cover part, said insulating cement upper end lug glue is between 0.5 millimeter to 1.5 millimeters.
The positive/negative plate lug bit architecture of described polymer Li-ion battery, wherein, the overlay length of cover part, said insulating cement lower end pole piece is between 2 millimeters to 10 millimeters.
The positive/negative plate lug bit architecture of described polymer Li-ion battery, wherein, said pole piece is positive plate or negative plate, negative plate is wideer than positive plate.
The positive/negative plate lug bit architecture of described polymer Li-ion battery, wherein, said pole piece comprises the active material of collector and coating.
Beneficial effect: the positive/negative plate lug bit architecture of the polymer Li-ion battery that the utility model provides; Because the tow sides of lug gap portion have all covered insulating cement at place, lug position; Can avoid the exposed of lug metal section and part fully; Thereby prevent the short circuit between lug exposed metal/bare metal part and positive/negative plate effectively; Particularly in the operations such as top side envelope of production process like the naked electric core of reeling, the naked electric core of concora crush, naked electric core of polymer Li-ion battery, effectively prevent short circuit, avoid causing that battery is smoldered or safety problem such as burning.
Description of drawings
Fig. 1 is the sketch map of positive plate structure of the embodiment of the utility model.
Fig. 2 is the sketch map of positive plate lug bit architecture of polymer Li-ion battery of the embodiment of the utility model.
Fig. 3 is the structural representation of electrical core coiling body of the embodiment of the utility model.
Embodiment
For the purpose, technical scheme and the effect that make the utility model is clearer, clear and definite, below with reference to accompanying drawing and give an actual example to the utility model further explain.
For the positive/negative plate lug bit architecture of polymer Li-ion battery that the utility model is described better, we introduce the structure of the positive plate of polymer Li-ion battery earlier.
See also Fig. 1, Fig. 1 is the sketch map of positive plate structure of the embodiment of the utility model.As shown in the figure; Said positive plate comprises: the positive active material 30 of positive pole ear 10, plus plate current-collecting body 20 and coating; The blank plus plate current-collecting body of uncoated active material is left in the inner of positive plate, the blank plus plate current-collecting body that its outer end is left (by being clear that among the figure).For negative plate, its similar is not in positive plate (just blank negative torrent body is generally left in the outer end), and is simple in order to describe here, just repeated no more.Be with should be noted that; The general anode sheet is wideer than positive plate; Purpose is effectively to encapsulate for lug glue and plastic-aluminum packaging film that the naked electric core after guarantee reeling is drawn through lug, and often the gap between positive plate lug glue lower end and positive plate than the gap between negative plate lug glue and negative plate more greatly.
Please consult Fig. 2 in the lump, it is the sketch map of positive plate lug bit architecture of polymer Li-ion battery of the embodiment of the utility model.As shown in the figure; It comprises lug 100, pole piece 200, lug glue 300 and insulating cement 400; Said lug 100 connects the front end of pole piece 200; Lug glue 300 is arranged on the lug 100, and said insulating cement 400 covers the tow sides of place, lug position lug gap portion, and place, ear position lug gap portion is all covered.Thereby avoided the exposed of lug metal section and part, prevented the short circuit between lug exposed metal/bare metal part and positive/negative plate effectively, avoided causing that battery is smoldered or safety problem such as burning.
Do not cover the gap portion of place, lug position lug with respect to insulating cement of the prior art; Perhaps there is part to cover; But still stayed the way in gap; The positive/negative plate lug bit architecture of the polymer Li-ion battery of the utility model has all covered insulating cement at the tow sides of place, lug position lug gap portion, can avoid the exposed of lug metal section and part fully, thereby prevents the short circuit between lug exposed metal/bare metal part and positive/negative plate effectively.
Through discovering, as shown in Figure 2, cover part, insulating cement 400 upper end lug glue 300, its overlay length H1 is 0.5～1.5mm; Cover part, insulating cement lower end collector, when its overlay length H2 was 2.0～10.0mm, the cost of material requested was lower, also can reach the effect that covers fully.
Please continue to consult Fig. 3; It is the structural representation of the utility model electrical core coiling body; The dotted portion on both positive and negative polarity both sides is an insulating cement 400 among the figure, can finely extend in the electrical core coiling body of this insulating cement 400 behind coiling in the volume core body, simultaneously can cover part lug glue.
In sum; The positive/negative plate lug bit architecture of the polymer Li-ion battery of the utility model; Because the tow sides of lug gap portion have all covered insulating cement at place, lug position; Can avoid the exposed of lug metal section and part fully; Thereby prevent the short circuit between lug exposed metal/bare metal part and positive/negative plate effectively, particularly in the operations such as top side envelope of production process like the naked electric core of reeling, the naked electric core of concora crush, naked electric core of polymer Li-ion battery, effectively prevent short circuit, avoid causing that battery is smoldered or safety problem such as burning.
It is understandable that; Concerning those of ordinary skills; Can be equal to replacement or change according to the technical scheme and the utility model design thereof of the utility model, and all these changes or replacement all should belong to the protection range of the appended claim of the utility model.
Claims (6)
1. the positive/negative plate lug bit architecture of a polymer Li-ion battery; Comprise: lug, pole piece, lug glue and insulating cement; Said lug connects the front end of pole piece, and lug glue is arranged on the lug, it is characterized in that; Said insulating cement covers the tow sides of place, lug position lug gap portion, and place, ear position lug gap portion is all covered.
2. the positive/negative plate lug bit architecture of polymer Li-ion battery according to claim 1 is characterized in that, cover part, said insulating cement upper end lug glue, cover part, lower end pole piece.
3. the positive/negative plate lug bit architecture of polymer Li-ion battery according to claim 2 is characterized in that, the overlay length of cover part, said insulating cement upper end lug glue is between 0.5 millimeter to 1.5 millimeters.
4. according to the positive/negative plate lug bit architecture of claim 2 or 3 described polymer Li-ion batteries, it is characterized in that the overlay length of cover part, said insulating cement lower end pole piece is between 2 millimeters to 10 millimeters.
5. the positive/negative plate lug bit architecture of polymer Li-ion battery according to claim 1 is characterized in that said pole piece is positive plate or negative plate, and negative plate is wideer than positive plate.
6. the positive/negative plate lug bit architecture of polymer Li-ion battery according to claim 1 is characterized in that said pole piece comprises the active material of collector and coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220052278XU CN202503058U (en) | 2012-02-17 | 2012-02-17 | Lug position structure for positive electrode piece and negative electrode piece of polymer lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220052278XU CN202503058U (en) | 2012-02-17 | 2012-02-17 | Lug position structure for positive electrode piece and negative electrode piece of polymer lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202503058U true CN202503058U (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220052278XU Expired - Fee Related CN202503058U (en) | 2012-02-17 | 2012-02-17 | Lug position structure for positive electrode piece and negative electrode piece of polymer lithium ion battery |
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| Country | Link |
|---|---|
| CN (1) | CN202503058U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108288688A (en) * | 2018-03-27 | 2018-07-17 | 贵州东森新能源科技有限公司 | A kind of column lithium ion battery lug optimization structure |
| CN110233234A (en) * | 2019-05-08 | 2019-09-13 | 深圳瑞隆新能源科技有限公司 | A kind of column tab and preparation method thereof |
| CN111106303A (en) * | 2019-12-25 | 2020-05-05 | 江苏智泰新能源科技有限公司 | Preparation method of nickel tab with heat-resistant insulating coating |
| CN111725554A (en) * | 2019-03-22 | 2020-09-29 | 深圳格林德能源集团有限公司 | Design method for controlling back sealing step of top sealing position of soft package lithium ion battery |
-
2012
- 2012-02-17 CN CN201220052278XU patent/CN202503058U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108288688A (en) * | 2018-03-27 | 2018-07-17 | 贵州东森新能源科技有限公司 | A kind of column lithium ion battery lug optimization structure |
| CN111725554A (en) * | 2019-03-22 | 2020-09-29 | 深圳格林德能源集团有限公司 | Design method for controlling back sealing step of top sealing position of soft package lithium ion battery |
| CN111725554B (en) * | 2019-03-22 | 2021-08-27 | 深圳格林德能源集团有限公司 | Design method for controlling back sealing step of top sealing position of soft package lithium ion battery |
| CN110233234A (en) * | 2019-05-08 | 2019-09-13 | 深圳瑞隆新能源科技有限公司 | A kind of column tab and preparation method thereof |
| CN110233234B (en) * | 2019-05-08 | 2020-11-06 | 江西瑞隆锂能科技有限公司 | Manufacturing method of columnar tab |
| CN111106303A (en) * | 2019-12-25 | 2020-05-05 | 江苏智泰新能源科技有限公司 | Preparation method of nickel tab with heat-resistant insulating coating |
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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: 20121024 Termination date: 20190217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |