CN203774408U - Power energy-storage polymer lithium ion battery - Google Patents
Power energy-storage polymer lithium ion battery Download PDFInfo
- Publication number
- CN203774408U CN203774408U CN201420127777.XU CN201420127777U CN203774408U CN 203774408 U CN203774408 U CN 203774408U CN 201420127777 U CN201420127777 U CN 201420127777U CN 203774408 U CN203774408 U CN 203774408U
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- CN
- China
- Prior art keywords
- negative
- district
- positive
- ion battery
- power energy
- 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 - Lifetime
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- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 25
- 238000004146 energy storage Methods 0.000 title claims abstract description 24
- 229920000642 polymer Polymers 0.000 title claims abstract description 20
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000011889 copper foil Substances 0.000 claims abstract description 26
- 239000003792 electrolyte Substances 0.000 claims abstract description 5
- 239000005030 aluminium foil Substances 0.000 claims description 32
- 239000007774 positive electrode material Substances 0.000 claims description 11
- 239000007773 negative electrode material Substances 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 239000013543 active substance Substances 0.000 abstract 2
- 239000011888 foil Substances 0.000 abstract 2
- 230000001351 cycling effect Effects 0.000 abstract 1
- 238000002955 isolation Methods 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 11
- 239000000565 sealant Substances 0.000 description 11
- 238000003466 welding Methods 0.000 description 5
- 101100460844 Mus musculus Nr2f6 gene Proteins 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005405 multipole Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000007755 gap coating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
-
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a power energy-storage polymer lithium ion battery. The power energy-storage polymer lithium ion battery consists of a positive pole piece, a positive tab, a negative pole piece, negative tabs, an isolation membrane and electrolyte; the positive pole piece comprises an aluminum foil and a positive active substance layer which is coated on the aluminum foil; the negative pole piece comprises a copper foil and a negative active substance layer which is coated on the copper foil; and the power energy-storage polymer lithium ion battery is characterized in that the positive tab is arranged at the middle position of the positive pole piece; each of the front end area and the tail end area of the negative pole piece is provided with a negative tab; and the width of the positive tab is twice that of the negative tab. By optimizing the position design of the cell pole pieces and the tabs, the large-current cycling performance of the battery is improved, so that the battery has good comprehensive electric performance, and the requirement of the industrial mass production can be met.
Description
Technical field
The utility model relates to a kind of power energy storage polymer Li-ion battery, and it belongs to technical field of lithium-ion battery, is specifically related to power energy storage polymer Li-ion battery technical field.
Background technology
Lithium ion battery is as a kind of new green power, because of its high power capacity, high voltage, small, light, have extended cycle life, the advantage such as working range is wide, fail safe good, memory-less effect, be widely used in the portable type electronic product developing rapidly in recent years as 3C/3G mobile phone, notebook computer, panel computer, video camera etc., the various fields such as the power-supply system of simultaneously equipping in electric automobile, national defense and military and photovoltaic energy storage system, energy storage alternate peak power station, uninterrupted power supply, middle-size and small-size energy-storage system have a wide range of applications future.
Based on power, the large-scale application demand of energy storage lithium ion battery, often require battery to possess lower internal resistance, larger power and longer cycle life.Current driving force energy storage polymer Li-ion battery often adopts winding-structure or multiple coiling battery core parallel-connection structure of lamination, one pole sheet multi pole ears, but these structures exist following shortcoming:
Although lamination can significantly reduce the internal resistance of battery, positive/negative plate is made complicated, and production lamination efficiency is too low, and production cost is very high simultaneously;
It is little that the winding-structure of one pole sheet multi pole ears improves the internal resistance of cell, if single pole-piece pole-ear is too many, coiling operation brought to very large difficulty, the lug contraposition difficulty after especially reeling, and consistency is poor;
Multiple coiling battery core parallel-connection structures can reduce the internal resistance of battery well, if but 3 above coiling battery core parallel connections require coiling cell polar ear position to have very high consistency, and multiple battery cores weld together difficulty, often there is the shortcomings such as welding effect is not good, and welding efficiency is low.
In view of the shortcoming of above multiple core strueture, be necessary to provide one can reduce the internal resistance of cell, promote battery discharge power, can overcome again above shortcoming, the power energy storage polymer lithium ion battery electric core structure of comprehensively enhancing productivity.
Utility model content
The purpose of this utility model is: for the deficiencies in the prior art, provide one can reduce the internal resistance of cell, promote battery discharge power, have again the power energy storage polymer Li-ion battery of high efficiency.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
A kind of power energy storage polymer Li-ion battery, is made up of positive plate, positive pole ear, negative plate, negative lug, barrier film and electrolyte; Described positive plate comprises aluminium foil and is coated on the positive electrode active material layer on aluminium foil; Described negative plate comprises Copper Foil and is coated on the negative electrode active material layer on Copper Foil; It is characterized in that, on the centre position of described positive plate, be provided with a positive pole ear; Front end region and tail end district at described negative plate are respectively arranged with a negative lug; The width of described positive pole ear is the twice of negative lug width.
The blank aluminium foil district that described positive plate front end is one-sided toward inner region, both sides, mesozone, both sides, tail end district are provided with uncoated positive electrode active material layer, described positive pole ear is arranged on the blank aluminium foil district of mesozone; The front end region of described negative plate and both sides, tail end district are provided with the blank Copper Foil district of uncoated positive electrode active material layer, and described negative lug is arranged on the blank Copper Foil district in front end region and tail end district.
Described positive plate front end is 5-20mm toward the one-sided blank aluminium foil length of inner region, and described positive plate internal edge is the width b ± 2.0mm of volume pin to front end toward the length a of the one-sided blank aluminium foil center line of inner region.
The blank aluminium foil length of described both sides, positive plate mesozone is consistent, and more than being greater than positive pole ear width 2.0mm; The length of tail end district downside aluminium foil is greater than the length of tail end district upside aluminium foil.
The blank Copper Foil section length of described negative plate front end region and both sides, tail end district is consistent, and more than being greater than negative lug width 2.0mm.
Described positive pole ear and negative lug width are all more than or equal to 8.0mm, and thickness is all more than or equal to 0.08mm.
Described positive pole ear and negative lug width are respectively 20.0mm and 10.0mm, or are respectively 16.0mm and 8.0mm, or are respectively 30.0mm and 15.0mm; Thickness is 0.10mm, 0.15mm or 0.20mm.
The utility model is by optimizing the design of battery core pole piece and lug position, change traditional coating method of battery core positive/negative plate and the welding position of lug, wider positive pole ear is drawn from the centre of pole piece, and negative lug is drawn from the two ends of pole piece, realize asymmetric lug core strueture, can fully effectively reduce the internal resistance of battery, improve the large multiplying power discharging property of power energy storage polymer Li-ion battery, improve the large current cycle performance of battery, guarantee that battery obtains good comprehensive electrochemical properties, is suitable for the needs of industrial-scale production.
Brief description of the drawings
Fig. 1 is the core strueture schematic diagram of welding with fluid sealant lug after the utility model is reeled;
Fig. 2 is the core strueture schematic diagram after the utility model positive/negative plate is reeled;
Fig. 3 is the structural representation of positive plate of the present utility model;
Fig. 4 is the vertical view of utility model Fig. 3;
Fig. 5 is the structural representation of the utility model negative plate;
Fig. 6 is the vertical view of utility model Fig. 5
Embodiment
For making those skilled in the art understand better the purpose of this utility model, technical scheme and advantage, below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6:
In figure: 1-positive active material, 2-positive pole ear, blank aluminium foil district in the middle of 3-positive pole, the anodal tail end of the 4-blank aluminium foil of district's one side district, the anodal tail end of the 5-blank aluminium foil of district's opposite side district, the anodal front end of 6-is toward the one-sided blank aluminium foil of inner region district, 7-negative electrode active material, the negative lug of 8-front end region, the negative lug in 9-tail end district, blank Copper Foil district, 10-negative pole front end region, blank Copper Foil district of 11-negative pole tail end district, battery core after 12-reels, the battery core of welding with fluid sealant lug after 13-reels, the positive pole ear of 14-with fluid sealant, the negative lug of 15-with fluid sealant, 16-positive pole ear fluid sealant, 17-negative lug fluid sealant.
The power energy storage polymer Li-ion battery of asymmetric lug core strueture described in the utility model, is made up of positive plate, positive pole ear, negative plate, negative lug, barrier film and electrolyte.Described positive plate comprises aluminium foil and is coated on the positive electrode active material layer on aluminium foil, and this positive electrode active material layer is that the positive active material having used during existing lithium ion battery is produced adopts coating method to obtain; Described negative plate comprises Copper Foil and is coated on the negative electrode active material layer on Copper Foil, the negative electrode active material layer that described negative electrode active material layer has also used in producing for existing lithium ion battery.In the utility model, barrier film and electrolyte are with of the prior art identical.
In order to realize the purpose of this utility model, on the centre position of described positive plate, be provided with a positive pole ear; Front end region and tail end district at described negative plate are respectively arranged with a negative lug.
In the present embodiment, the following scheme of employing that arranges of described positive and negative electrode lug:
Shown in Fig. 3 and Fig. 4, described positive plate comprises aluminium foil and is coated on the positive electrode active material layer 1 on aluminium foil, it adopts gap coating method to apply aluminium foil, uncoated blank aluminium foil district is left in described positive plate front end, mesozone both sides 3 one-sided 6 toward inner region, both sides, tail end district 4 and 5, and described positive pole ear 2 is welded in the blank aluminium foil district 3 in the middle of anodal; Form positive pole of the present utility model by positive plate and the positive pole ear being arranged on positive plate.
Shown in Fig. 5 and Fig. 6, described negative plate comprises Copper Foil and is coated on the negative electrode active material layer 7 on Copper Foil, blank Copper Foil district 10, negative pole front end region and blank Copper Foil district of negative pole tail end district 11 are set on described negative plate, and described blank Copper Foil district refers to the region that does not apply negative electrode active material layer on Copper Foil.The first described negative lug 8 is welded on blank Copper Foil district, negative pole front end region 10, the second negative lug 9 and is welded on blank Copper Foil district of negative pole tail end district 11.Form negative pole of the present utility model by described two negative lug 8,9 and described negative plate.
In the present embodiment, described positive plate front end is 5-20mm toward the one-sided blank aluminium foil length of inner region, this front end is rolled up the edge of pin in the time that electric core winding is just dropped in centre position on the one-sided blank aluminium foil length direction of inner region, there is the a=b of relation ± 2.0mm, wherein b is the width of volume pin, and described volume pin is volume pin conventional in state of the art.A is the length of positive plate internal edge to front end toward the one-sided blank aluminium foil center line of inner region, as shown in Figure 3.
In the present embodiment, the blank aluminium foil length of described both sides, positive plate mesozone is consistent, and more than being greater than positive pole ear 2 width 2.0mm; The length of the aluminium foil 5 of tail end district downside is greater than the length of the aluminium foil 4 of tail end district upside.
Described blank Copper Foil district 10, negative pole front end region is consistent with blank Copper Foil district of negative pole tail end district 11 length, and more than being greater than negative lug width 2.0mm.
Described positive pole ear and negative lug width are all more than or equal to 8.0mm, and thickness is all more than or equal to 0.08mm.
The width of positive pole ear of the present utility model is the twice of negative lug width.In the present embodiment, the width of positive pole ear can be chosen as 20.0mm or 16.0mm or 30.0mm, and corresponding negative lug width is respectively 10.0mm or 8.0mm or 15.0mm.
Positive pole ear of the present utility model and negative lug consistency of thickness, can be chosen as 0.10mm or 0.15mm or 0.20mm in an embodiment.
As shown in Figure 2, make after battery battery core 12 of the present utility model according to above-mentioned scheme, positive pole ear 2 is single draws, parallel the drawing of another two negative lug 8,9, and seal, positive pole ear fluid sealant 16 and negative lug fluid sealant 17 be both set, thereby make with the positive pole ear 14 of fluid sealant with the negative lug 15 of fluid sealant, as shown in fig. 1, final formation coiling of the present utility model welds the battery core 13 with fluid sealant lug afterwards, after making with the encapsulation of packaging aluminium plastic film, both can complete finished product of the present utility model.
Claims (7)
1. a power energy storage polymer Li-ion battery, is made up of positive plate, positive pole ear, negative plate, negative lug, barrier film and electrolyte; Described positive plate comprises aluminium foil and is coated on the positive electrode active material layer on aluminium foil; Described negative plate comprises Copper Foil and is coated on the negative electrode active material layer on Copper Foil; It is characterized in that, on the centre position of described positive plate, be provided with a positive pole ear; Front end region and tail end district at described negative plate are respectively arranged with a negative lug; The width of described positive pole ear is the twice of negative lug width.
2. power energy storage polymer Li-ion battery as described in claim 1, the blank aluminium foil district that it is characterized in that described positive plate front end is one-sided toward inner region, both sides, mesozone, both sides, tail end district is provided with uncoated positive electrode active material layer, described positive pole ear is arranged on the blank aluminium foil district of mesozone; The front end region of described negative plate and both sides, tail end district are provided with the blank Copper Foil district of uncoated positive electrode active material layer, and described negative lug is arranged on the blank Copper Foil district in front end region and tail end district.
3. the power energy storage polymer Li-ion battery described in claim 1 or 2, it is characterized in that, described positive plate front end is 5-20mm toward the one-sided blank aluminium foil length of inner region, and described positive plate internal edge is the width ± 2.0mm of volume pin to front end toward the length a of the one-sided blank aluminium foil center line of inner region.
4. power energy storage polymer Li-ion battery as claimed in claim 1 or 2, is characterized in that, the blank aluminium foil length of described both sides, positive plate mesozone is consistent, and more than being greater than positive pole ear width 2.0mm; The aluminium foil of tail end district downside is greater than the aluminium foil of tail end district upside.
5. the power energy storage polymer Li-ion battery as described in claims 1 or 2, is characterized in that, the blank Copper Foil length of described negative plate front end region and both sides, tail end district is consistent, and more than being greater than negative lug width 2.0mm.
6. power energy storage polymer Li-ion battery as claimed in claim 1, is characterized in that, described positive pole ear and negative lug width are all more than or equal to 8.0mm, and thickness is all more than or equal to 0.08mm.
7. the power energy storage polymer Li-ion battery as described in claims 1 or 6, is characterized in that, positive pole ear and negative lug width are respectively 20.0mm and 10.0mm, or are respectively 16.0mm and 8.0mm, or is respectively 30.0mm and 15.0mm; Thickness is 0.10mm, 0.15mm or 0.20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420127777.XU CN203774408U (en) | 2014-03-20 | 2014-03-20 | Power energy-storage polymer lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420127777.XU CN203774408U (en) | 2014-03-20 | 2014-03-20 | Power energy-storage polymer lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203774408U true CN203774408U (en) | 2014-08-13 |
Family
ID=51291562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420127777.XU Expired - Lifetime CN203774408U (en) | 2014-03-20 | 2014-03-20 | Power energy-storage polymer lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203774408U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110957476A (en) * | 2019-10-30 | 2020-04-03 | 深圳市卓能新能源股份有限公司 | High-rate lithium ion power battery and manufacturing method thereof |
| CN113924674A (en) * | 2019-06-03 | 2022-01-11 | 三星Sdi株式会社 | Secondary battery |
| CN114005956A (en) * | 2021-12-30 | 2022-02-01 | 天津力神电池股份有限公司 | Battery pole piece, preparation method thereof and lithium ion battery |
-
2014
- 2014-03-20 CN CN201420127777.XU patent/CN203774408U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113924674A (en) * | 2019-06-03 | 2022-01-11 | 三星Sdi株式会社 | Secondary battery |
| CN110957476A (en) * | 2019-10-30 | 2020-04-03 | 深圳市卓能新能源股份有限公司 | High-rate lithium ion power battery and manufacturing method thereof |
| CN114005956A (en) * | 2021-12-30 | 2022-02-01 | 天津力神电池股份有限公司 | Battery pole piece, preparation method thereof and lithium ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518110 4th Floor, Building A2, Liyuan Bay Industrial Park, 168 Honghu Road, Yanchuan, Songgang, Shenzhen, Guangdong Province Patentee after: SHENZHEN GRAND POWERSOURCE Co.,Ltd. Address before: 518127 4th Floor, Building A2, Liyuan Bay Industrial Park, 168 Honghu Road, Yanchuan, Songgang, Shenzhen, Guangdong Province Patentee before: SHENZHEN GRAND POWERSOURCE Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |
|
| CX01 | Expiry of patent term |