CN202259565U - Lithium ion secondary battery - Google Patents
Lithium ion secondary battery Download PDFInfo
- Publication number
- CN202259565U CN202259565U CN2011203739017U CN201120373901U CN202259565U CN 202259565 U CN202259565 U CN 202259565U CN 2011203739017 U CN2011203739017 U CN 2011203739017U CN 201120373901 U CN201120373901 U CN 201120373901U CN 202259565 U CN202259565 U CN 202259565U
- Authority
- CN
- China
- Prior art keywords
- lug
- negative
- tab
- aluminium
- glue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a lithium ion secondary battery, comprises an electrode core, a positive electrode educing tab, a negative electrode educing tab, a positive electrode tab film which is arranged on the positive electrode educing tab, and a negative electrode tab film which is arranged on the negative electrode educing tab, wherein the electrode core comprises a positive electrode plate which is provided with a positive electrode current collector, and a negative electrode plate which is provided with a negative electrode current collector; the positive electrode educing tab is made of aluminium; the positive electrode tab film is a softened tab film; the negative electrode tab film is a melted tab film; the lithium ion secondary battery is also provided with an aluminium plastic film; and the aluminium plastic film comprises a polypropylene material layer and an aluminium foil layer. When the lithium ion secondary battery is encapsulated, the negative electrode tab film and the polypropylene material layer of the aluminium plastic film are melted, the negative electrode plate and an aluminium layer of the aluminium plastic film are connected into a whole, and the negative electrode and the aluminium layer in the aluminium plastic film are at the same electric potential, so that the electrochemical reaction does not take place and the corrosion, liquid leakage and swelling of the battery can be avoided completely.
Description
Technical field
The utility model relates to a kind of lithium rechargeable battery, relates in particular to a kind of lithium rechargeable battery with high reliability.
Background technology
As the lithium rechargeable battery of portable electric appts portable power source and motor vehicle driving power,, thereby obtain the attention of countries in the world because the specific energy of lithium rechargeable battery is high.Wherein the liquid electrolyte lithium rechargeable battery is used widely in fields such as number, communication, electronic equipment, portable power sources.And the polymer lithium ion secondary battery of colloid or solid electrolyte has also begun to obtain practicality.The advantage of lithium rechargeable battery has: energy than high, manufacture craft is simple, shape is changeable flexibly, no liquid leakage, long shelf-life, normally discharging and recharging not can aerogenesis or the like.The packaging film to lithium rechargeable battery adopts aluminum-plastic composite membrane more in the industry at present.On the collector that the positive and negative electrode of lamination or winding is drawn, weld aluminium strip and the copper strips or the nickel strap of band lug glue respectively; Melt the PP film of the lug glue of positive and negative lug and aluminum plastic film nexine with the method for hot pressing with special sealing device again, bond together the method for two sides packaging film again with hot pressing.Its ectomesoderm is nylon or poly terephthalic acid diethanol ester material, and the intermediate layer is an aluminium, the internal layer polypropylene, and this kind packaging film has following characteristics: the battery that cost is low, in light weight, thin thickness, manufacture craft are processed into different shape and thickness simply, easily.
But also there is certain shortcoming in this kind packaging film; Because this packaging film generally adopts hot-press method that the polypropylene material hot pressing of two sides packaging film internal layer is melted and bonds together; In the process so; Make internal layer crackle or breakage occur easily, contact thereby cause the aluminium in the intermediate layer of packaging film to draw lug with battery.In case the aluminium in the packaging film directly or indirectly with electric core in the negative pole electronic conduction; The anodal relatively aluminium that is in low potential can be participated in electrochemical reaction; And in reaction, lose electronics; The aluminum corrosion aerogenesis that causes the intermediate layer finally causes energy content of battery loss to be lost efficacy until destruction, and serious also potential safety hazard possibly occur.For avoiding the generation of above-mentioned situation, manufacturer will drop into great amount of manpower and material resources; Detect the voltage of aluminium in negative pole and the aluminum plastic film, or the stock selects shipment then for a long time.
The utility model content
In order to overcome the deficiency of above-mentioned prior art; The utility model provides a kind of lithium rechargeable battery; Comprise that pole piece, positive pole draw lug, negative pole and draw lug, be arranged at positive pole and draw the positive pole ear glue of lug and be arranged at the negative electrode lug glue that negative pole is drawn lug, said pole piece comprises positive plate that is provided with plus plate current-collecting body and the negative plate that is provided with negative current collector, and said positive pole is drawn lug and adopted aluminium; Said positive pole ear glue adopts softening type lug glue; Said negative lug glue adopts thawing type lug glue, and said lithium rechargeable battery also is provided with aluminum plastic film, and said aluminum plastic film comprises and is provided with the polypropylene material bed of material and aluminium foil layer.
Further being improved to of the utility model, the polypropylene material of said aluminum plastic film is identical with the melt temperature of said negative lug glue.
Compared to prior art, the positive pole of the lithium rechargeable battery of the utility model is drawn lug, negative pole is drawn lug and adopted dissimilar lug glue.Positive pole ear glue adopts softening type lug glue, and negative lug glue adopts thawing type lug glue.When lithium rechargeable battery encapsulated, negative pole was drawn the polypropylene material melting layer of lug glue and aluminum plastic film, and the aluminium lamination of negative plate and aluminum plastic film connects as one, and the aluminium lamination in negative pole and the aluminum plastic film is at same current potential, and the situation that does not just have electrochemical reaction takes place.Avoided the generation of battery corrosion, leakage, inflatable situation fully.
Description of drawings
Fig. 1 is the utility model lithium rechargeable battery structural representation.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is further specified.
See also Fig. 1; The utility model provides a kind of lithium rechargeable battery 10; Comprise that pole piece 11, positive pole draw lug 13, negative pole and draw lug 15, be arranged at positive pole and draw the positive pole ear glue 17 of lug 13 and be arranged at the negative lug glue 19 that negative pole is drawn lug 15, said pole piece 11 comprises the positive plate that is provided with plus plate current-collecting body 111 and is provided with the negative plate of negative current collector 113.Said negative pole is drawn lug 15 and is adopted aluminium, and said positive pole ear glue 17 adopts softening type lug glue, and said negative lug glue 19 adopts thawing type lug glue, and positive pole ear glue 17 is in the after-tack of being heated, and negative lug glue 19 melts in the back that is heated.Said lithium rechargeable battery 10 also is provided with aluminum plastic film, and said aluminum plastic film comprises and is provided with the polypropylene material bed of material and aluminium lamination.The polypropylene material of said aluminum plastic film is identical with the melt temperature of said negative lug glue 19.
Positive pole ear, the negative pole of the lithium rechargeable battery 10 of the utility model drawn lug 15 and adopted dissimilar lug glue.Positive pole ear glue 17 adopts softening type lug glue, and negative lug glue 19 adopts thawing type lug glue.When lithium rechargeable battery 10 encapsulation, the polypropylene material melting layer of negative lug glue 19 and aluminum plastic film, the aluminium lamination of negative plate and aluminum plastic film connects as one, and the aluminium lamination in negative pole and the aluminum plastic film is at same current potential, and the situation that does not just have electrochemical reaction takes place.Avoided the generation of battery corrosion, leakage, inflatable situation fully.
Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection range of the utility model.
Claims (2)
1. lithium rechargeable battery; It is characterized in that: comprise that pole piece, positive pole draw lug, negative pole and draw lug, be arranged at positive pole and draw the positive pole ear glue of lug and be arranged at the negative lug glue that negative pole is drawn lug; Said pole piece comprises positive plate that is provided with plus plate current-collecting body and the negative plate that is provided with negative current collector; Said positive pole ear adopts aluminium, and said positive pole ear glue adopts softening type lug glue, and said negative lug glue adopts thawing type lug glue; Said lithium rechargeable battery also is provided with aluminum plastic film, and said aluminum plastic film comprises and is provided with the polypropylene material bed of material and aluminium foil layer.
2. according to the said lithium rechargeable battery of claim 1, it is characterized in that: the polypropylene material of said aluminum plastic film is identical with the melt temperature that said negative pole is drawn lug glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203739017U CN202259565U (en) | 2011-09-30 | 2011-09-30 | Lithium ion secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203739017U CN202259565U (en) | 2011-09-30 | 2011-09-30 | Lithium ion secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202259565U true CN202259565U (en) | 2012-05-30 |
Family
ID=46120760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203739017U Expired - Fee Related CN202259565U (en) | 2011-09-30 | 2011-09-30 | Lithium ion secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202259565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106920987A (en) * | 2017-04-01 | 2017-07-04 | 厦门日臻动力电源科技有限公司 | A kind of preparation method of secondary ultra-thin soft-packaged polymer lithium ion battery |
-
2011
- 2011-09-30 CN CN2011203739017U patent/CN202259565U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106920987A (en) * | 2017-04-01 | 2017-07-04 | 厦门日臻动力电源科技有限公司 | A kind of preparation method of secondary ultra-thin soft-packaged polymer lithium ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160325 Address after: 201 room 518000, building A, No. 1, Qianhai Road, Qianhai, Shenzhen, Qianhai, Guangdong (Shenzhen business affairs secretary Co., Ltd.) Patentee after: SHENZHEN LIWEI LI-ENERGY TECHNOLOGY CO., LTD. Address before: 518000, Guangdong, Shenzhen, Baoan District, Longhua town on the big wave, horizontal Lang Baiyun Mountain village, Xin Yongfeng Industrial Zone, A District, two floor Patentee before: Li Zhenqi Patentee before: Liu Lijun |
|
| PP01 | Preservation of patent right |
Effective date of registration: 20190703 Granted publication date: 20120530 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210930 Granted publication date: 20120530 |
|
| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20190930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |