CN204348808U - A kind of coiled high-rate lithium ion battery - Google Patents
A kind of coiled high-rate lithium ion battery Download PDFInfo
- Publication number
- CN204348808U CN204348808U CN201420821562.8U CN201420821562U CN204348808U CN 204348808 U CN204348808 U CN 204348808U CN 201420821562 U CN201420821562 U CN 201420821562U CN 204348808 U CN204348808 U CN 204348808U
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- China
- Prior art keywords
- lug
- positive plate
- ion battery
- lithium ion
- lithium cell
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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
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Abstract
The utility model discloses a kind of coiled high-rate lithium ion battery, it comprises columned coiling lithium battery core, the barrier film that described lithium cell comprises positive plate, negative plate and is arranged between described positive plate and negative plate, wherein, described positive plate is provided with the first lug and the second lug, the width of described first lug and the second lug is 4 ~ 6mm, the length of described first lug distance positive plate one end is 25 ~ 27mm, and described second lug is 58 ~ 60mm apart from the length of described first lug; By laser welding, described first lug is connected with the second lug after the coiling.Positive plate in lithium ion battery arranges two lugs, and after anode pole piece winding, two lugs, near core center, can obviously reduce battery core internal resistance, can realize high magnification continuous discharge, spark up to 30C.
Description
Technical field
The utility model relates to secondary battery technology, is specifically related to a kind of coiled high-rate lithium ion battery.
Background technology
In recent years, because of lithium ion battery, to have operating voltage high, and energy density is large, memory-less effect, to have extended cycle life and the advantage such as pollution-free makes its application constantly widen, and also improves constantly the performance requirement of its each side simultaneously.Along with lithium battery application in daily life, people gradually understand and have affirmed the superiority of lithium battery other system batteries relative, also improve gradually with expecting the requirement of lithium battery.Initial capacity type lithium battery has been widely used in the portable electric appts such as mobile phone, notebook computer, digital camera, and the power lithium battery of present big current high-multiplying power discharge also starts to be applied in the electronic equipment inseparable with people's productive life such as electric tool, battery vehicle, mine lamp.
As everyone knows, making the comparatively general method of the naked battery core of lithium battery is now adopt takeup type method: namely the single tab welding of positive and negative electrode sheet is in one end of strip positive and negative electrode sheet, place membrane winding between positive and negative electrode sheet and form the naked battery core of lithium battery, be characterized in that technique is simple, production efficiency is high.Adopt the mode of single lug, when lithium ion battery is at large multiplying power discharging, lug heating is serious, and cell integrated temperature is too high, makes the easy thermal runaway of battery, thus causes battery multiplying power discharging property and cycle performance to be deteriorated.
Summary of the invention
In view of this, the utility model provides a kind of coiled high-rate lithium ion battery, it comprises columned coiling lithium battery core, the barrier film that described lithium cell comprises positive plate, negative plate and is arranged between described positive plate and negative plate, wherein, described positive plate is provided with the first lug and the second lug, the width of described first lug and the second lug is 4 ~ 6mm, the length of described first lug distance positive plate one end is 25 ~ 27mm, and described second lug is 58 ~ 60mm apart from the length of described first lug; By laser welding, described first lug is connected with the second lug after the coiling.
Wherein, after the coiling, described first lug and the second lug lay respectively at cylindric lithium cell center relative both sides and near cylindric lithium cell center.
Wherein, described first lug and the second lug, first towards the bending of cylindric lithium cell center, then outwards bend the first lug is connected with the second lug conflict along the axis of described lithium cell in cylindric lithium cell center again.
Wherein, described positive plate is provided with and stays white area, described first lug and the second lug are connected on described positive plate respectively by the white area of staying of correspondence.
Wherein, the width in white area is stayed to be 10 ~ 12mm described in.
Wherein, the width of described positive plate is 57 ~ 58mm.
The lithium ion battery that the utility model provides, positive plate wherein arranges two lugs, and after anode pole piece winding, two lugs, near core center, can obviously reduce battery core internal resistance, can realize high magnification continuous discharge, spark up to 30C; And because two lugs separate from the both sides at core center near core center, be conducive to tab welding, be also more conducive to battery security.
Accompanying drawing explanation
Fig. 1 is the structural representation of the lithium cell that the utility model embodiment provides.
Fig. 2 is the structural representation of the positive plate that the utility model embodiment provides.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be described in detail the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part example, instead of whole embodiment.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the utility model protection range.
Consult Fig. 1 and Fig. 2, a kind of coiled high-rate lithium ion battery that the present embodiment provides, it comprises columned coiling lithium battery core 1, the barrier film 30 that described lithium cell 1 comprises positive plate 10, negative plate 20 and is arranged between described positive plate 10 and negative plate 20, is formed by the stacked rear winding of positive plate 10, negative plate 20 and barrier film 30.
Wherein, as shown in Figure 2, described positive plate 10 is provided with the first lug 101 and the second lug 102, described first lug 101 is arranged between 25 ~ 27mm apart from the length L1 of positive plate 10 1 end, and described second lug 102 is arranged between 58 ~ 60mm apart from the length L2 of described first lug 101; By laser welding, described first lug 101 is connected with the second lug 102 after the coiling.The width of described first lug 101 and the second lug 102 is 4 ~ 6mm, and the width D of described positive plate 10 is 57 ~ 58mm.More specifically, described positive plate 10 is provided with and stays white area 103, described first lug 101 and the second lug 102 are connected on described positive plate 10 respectively by the white area 103 of staying of correspondence; The described width in white area 103 that stays is 10 ~ 12mm.
As shown in Figure 1, after the coiling, described first lug 101 and the second lug 102 lay respectively at cylindric lithium cell 1 center relative both sides and near cylindric lithium cell 1 center.Particularly, described first lug 101 and the second lug 102 are first respectively towards the bending of cylindric lithium cell 1 center, then outwards bend along the axis of described lithium cell 1 again in cylindric lithium cell 1 center, after second time bending, first lug 101 and the second lug 102 are mutually close to conflict and are connected, then are linked together by laser welding.
The lithium ion battery that above embodiment provides, positive plate wherein arranges two lugs, and after anode pole piece winding, two lugs, near core center, can obviously reduce battery core internal resistance, can realize high magnification continuous discharge, spark up to 30C; And because two lugs separate from the both sides at core center near core center, be conducive to tab welding, be also more conducive to battery security.
The above is only the embodiment of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection range of the application.
Claims (6)
1. a coiled high-rate lithium ion battery, comprise columned coiling lithium battery core (1), described lithium cell (1) comprises positive plate (10), negative plate (20) and the barrier film (30) be arranged between described positive plate (10) and negative plate (20), it is characterized in that, described positive plate (10) is provided with the first lug (101) and the second lug (102), the width of described first lug (101) and the second lug (102) is 4 ~ 6mm, the length of described first lug (101) distance positive plate (10) end is 25 ~ 27mm, described second lug (102) is 58 ~ 60mm apart from the length of described first lug (101), by laser welding, described first lug (101) is connected with the second lug (102) after the coiling.
2. coiled high-rate lithium ion battery according to claim 1, it is characterized in that, after the coiling, described first lug (101) and the second lug (102) lay respectively at cylindric lithium cell (1) center relative both sides and near cylindric lithium cell (1) center.
3. coiled high-rate lithium ion battery according to claim 2, it is characterized in that, described first lug (101) and the second lug (102), first towards the bending of cylindric lithium cell (1) center, then outwards bend the first lug (101) is connected with the second lug (102) conflict along the axis of described lithium cell (1) in cylindric lithium cell (1) center again.
4. according to the arbitrary described coiled high-rate lithium ion battery of claim 1-3, it is characterized in that, described positive plate (10) is provided with and stays white area (103), described first lug (101) and the second lug (102) are connected on described positive plate (10) respectively by the white area (103) of staying of correspondence.
5. coiled high-rate lithium ion battery according to claim 4, is characterized in that, described in stay the width in white area (103) to be 10 ~ 12mm.
6. coiled high-rate lithium ion battery according to claim 4, is characterized in that, the width of described positive plate (10) is 57 ~ 58mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420821562.8U CN204348808U (en) | 2014-12-23 | 2014-12-23 | A kind of coiled high-rate lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420821562.8U CN204348808U (en) | 2014-12-23 | 2014-12-23 | A kind of coiled high-rate lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204348808U true CN204348808U (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420821562.8U Expired - Fee Related CN204348808U (en) | 2014-12-23 | 2014-12-23 | A kind of coiled high-rate lithium ion battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN204348808U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016187810A1 (en) * | 2015-05-26 | 2016-12-01 | 罗明镜 | Winding type lithium ion battery |
| CN112117424A (en) * | 2019-06-21 | 2020-12-22 | 比亚迪股份有限公司 | Single battery, power battery pack and vehicle |
| CN114464467A (en) * | 2022-03-11 | 2022-05-10 | 合盛科技(宁波)有限公司 | Lead type full-lug lithium ion capacitor and preparation method thereof |
-
2014
- 2014-12-23 CN CN201420821562.8U patent/CN204348808U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016187810A1 (en) * | 2015-05-26 | 2016-12-01 | 罗明镜 | Winding type lithium ion battery |
| CN112117424A (en) * | 2019-06-21 | 2020-12-22 | 比亚迪股份有限公司 | Single battery, power battery pack and vehicle |
| CN112117424B (en) * | 2019-06-21 | 2022-02-08 | 比亚迪股份有限公司 | Single battery, power battery pack and vehicle |
| CN114464467A (en) * | 2022-03-11 | 2022-05-10 | 合盛科技(宁波)有限公司 | Lead type full-lug lithium ion capacitor and preparation method thereof |
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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: 20160606 Address after: Guangming Gongming street Shenzhen city Guangdong province 518000 water port industrial zone sixth xufa Science Park Building 7, building 3 floor 3A Patentee after: SHENZHEN RED FAIRY PRECISION TECHNOLOGY CO., LTD. Address before: 518109, Guangdong, Longhua Province, Shenzhen New District, big wave street, the same wins community, Cloth Dragon Road, Baiyun Mountain village, elephant company, plant No. 1-4, 4, 5, 1-5 Patentee before: SHENZHEN TIANSHENG WEIYE TECHNOLOGY CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20171223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |