CN203871434U - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN203871434U CN203871434U CN201420202714.6U CN201420202714U CN203871434U CN 203871434 U CN203871434 U CN 203871434U CN 201420202714 U CN201420202714 U CN 201420202714U CN 203871434 U CN203871434 U CN 203871434U
- Authority
- CN
- China
- Prior art keywords
- district
- negative
- lithium ion
- battery
- positive plate
- 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
Links
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 29
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000011149 active material Substances 0.000 claims abstract description 12
- 239000012528 membrane Substances 0.000 claims abstract description 3
- 238000004804 winding Methods 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 abstract description 11
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 5
- 239000011888 foil Substances 0.000 abstract 6
- 238000007747 plating Methods 0.000 abstract 1
- 210000005069 ears Anatomy 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000005405 multipole Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 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
- Battery Electrode And Active Subsutance (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a lithium ion battery, which comprises a positive plate, a negative plate and a battery core formed by winding a membrane and arranged between the positive plate and the negative plate; a least one section of positive empty foil area welded with a positive pole lug is arranged on the positive plate; at least one section of negative empty foil area welded with a negative pole lug is arranged on the negative plate; an avoidance empty foil area is arranged on the positive plate in the position corresponding to the negative empty foil area. According to the lithium ion battery, during the charging process of the battery, the positive plate corresponding to the negative empty foil area welded with the negative pole lug is the avoidance empty foil area, which is coated with active materials, so that lithium ions are not released in the range, and the problem of lithium plating is avoided, as a result, the problem of battery short circuit is avoided, and the quality of the battery is improved.
Description
Technical field
The utility model relates to the manufacturing technology of lithium ion battery, particularly relates to a kind of lithium ion battery.
Background technology
Rate lithium ion battery has a wide range of applications at aspects such as electronic toy, electric tool, hybrid-electric cars, particularly under the condition of energy crisis shortage of resources and environmental pollution at present, more can embody its advantage.
Rate battery will possess the performance of high current charge-discharge and the power of Geng Gao, will reduce the internal resistance of battery, reduces the polarization phenomena while discharging and recharging.The internal resistance of cell mainly comprises the impedance of positive/negative plate impedance, the impedance of both positive and negative polarity lug, electrolyte impedance and pole piece and electrolyte interface etc.
Under present circumstances, reduce rate lithium ion battery internal resistance and mainly contain following two kinds of modes, the surface density while being formula, the active material coating of both positive and negative polarity active material on the one hand and compacted density etc.; From the material of lug and pole piece and both structures etc. on the other hand.
From the configuration aspects of pole piece, consider, mostly be by adopting the both positive and negative polarity of multi pole ears structure, the patent documentation that for example application number is 201020195529.0 discloses a kind of lithium battery with multi pole ears, comprise shell, battery, described battery comprises positive plate and the negative plate with a plurality of lugs, is provided with barrier film between positive/negative plate; Described positive plate or negative plate are connected with battery terminal by the battery plus-negative plate ear being fixedly connected with.This lithium battery is on the basis of takeup type structural design, added polymer laminated structure Design Thinking, by the lug on increase pole piece, change the structural design of battery core, coiled advantage and stacked advantages are got up, increase the stability at interface between electrode, the high rate performance that improves battery core has reduced the internal resistance of battery simultaneously.
Although above-mentioned lithium battery improves the high rate performance of battery to a certain extent, but still existing problems, negative pole is at the lug of pole piece middle part welding, during coiling, have positive active material corresponding with it, the lithium ion that positive electrode discharges when charging holds without negative material in this region, cause and analyse lithium, repeatedly very easily short circuit after circulation, is designed with great potential safety hazard like this.
The problems referred to above can solve by changing the generation type of lug, the patent documentation that is 201220243835.6 as application number discloses a kind of high multiplying power lithium ion battery of multi pole ears structure, comprise the volume core being formed around volume by pole piece and barrier film, the active layer that pole piece is applied by base material and substrate surface forms, pole piece is provided with a plurality of by the die-cut lug sheet forming of reserved base material, pole piece comprises positive plate and negative plate, after pole piece coiling rolling core, the lug sheet of positive plate is connected, and the lug sheet of negative plate is connected.The high multiplying power lithium ion battery of this multi pole ears structure has advantages of that internal resistance is little and discharge performance is good.
But this technique forms lug by die-cut mode, not only automation efficiency is low, is difficult to be applicable to large-scale production, and lug very easily ruptures in junction simultaneously, affects product quality.
Utility model content
The utility model provides a kind of lithium ion battery, to solve in prior art, uses welding manner to form the mode of a plurality of lugs, in course of reaction, easily causes and analyses lithium, and long-time use easily causes the problem of short circuit.
A kind of lithium ion battery, comprise by positive plate, negative plate and be arranged on positive plate and negative plate between the battery of membrane winding moulding, described positive plate is provided with at least one section of welding anode ear Zheng Kongbo district, described negative plate is provided with at least one section of welding negative electrode lug Fu Kongbo district, and position corresponding to described positive plate Yu Fukongbo district is provided with dodges Kong Bo district.
The lithium ion battery of said structure is in charging process, the positive plate corresponding with being welded with negative electrode lug Fu Kongbo district is to dodge Kong Bo district, be not coated with active material, within the scope of this, can not discharge lithium ion, can not cause the problem of analysing lithium yet, thereby avoid occurring the problem of battery short circuit, improve battery quality.
Although dodge the setting in Kong Bo district, have above-mentioned advantage, but owing to dodging Kong Bo district and can reduce the amount of active material, reduce charge storage ability, therefore in order reduce as far as possible, to dodge the quantity in Kong Bo district and to avoid again Fu Kongbo district to analyse lithium simultaneously, preferably, described Zheng Kongbo district and negative empty paper tinsel area overlapping.That is to say that the work You Zhengkongbo district that partly dodges Kong Bo district completes, thereby can effectively reduce the quantity of dodging Kong Bo district.
Due to every group of corresponding dodging in He Fukongbo district, Kong Bo district, dodge Kong Bo district back to the position in Fu Kongbo district owing to being separated with the body of positive plate, substantially can not cause the lithium problem of analysing, preferred, described in dodge Kong Bo district and apply active material back to the one side in Fu Kongbo district.
In order to reduce Kong Bo district quantity, the convenient positive plate that applies, preferred, Liang Gekongbo district adjacent on positive plate is corresponding with same Fu Kongbo district, and Gai Lianggekong paper tinsel district is connected.Liang Gekongbo district adjacent on positive plate comprises Zheng Kongbo district, also comprises and dodges Kong Bo district.
Preferably, described lug has the welding section of covering at least 2/3 pole piece breadth.Said structure can reduce ohmic internal resistance and the polarization resistance of inside battery, the high rate performance of the battery of raising, the temperature rise while having reduced battery multiplying power discharging.
The beneficial effects of the utility model:
Lithium ion battery of the present utility model, in charging process, the positive plate corresponding with being welded with negative electrode lug Fu Kongbo district is to dodge Kong Bo district, be not coated with active material, within the scope of this, can not discharge lithium ion, can not cause the problem of analysing lithium, thereby avoid occurring the problem of battery short circuit, improve battery quality yet.
Accompanying drawing explanation
Fig. 1 is the structural representation of negative plate of the present utility model.
Fig. 2 is the structural representation of positive plate of the present utility model.
Fig. 3 is cross-sectional schematic of the present utility model.
Embodiment
As described in Fig. 1～3, the lithium ion battery of the present embodiment comprises by positive plate 1, negative plate 2 and be arranged on positive plate 1 and negative plate 2 between the battery of barrier film 3 coiling and moldings.
On positive plate 1, be coated with active material 11 and be provided with two sections and be welded with 13He Kongbo district, anode ear 12Kong Bo district 14; On negative plate 2, be coated with active material 21 and be provided with two sections and be welded with 23He Kongbo district, negative electrode lug 22Kong Bo district 24.
Wherein, the breadth in Kong Bo district 14 is larger, except for welding anode ear 12, in after coiling and molding, the effect of dodging 24 inner sides, Kong Bo district and outside also will be played by Kong Bo district 14, as shown in Figure 3, in the present embodiment, Kong Bo district 14 is back to the uncoated active material of one side in Fu Kongbo district.
Anode ear 12 has the welding section that covers 2/3 positive plate 1 breadth; Negative electrode lug 22 has the welding section that covers 2/3 negative plate 2 breadths.Said structure can reduce ohmic internal resistance and the polarization resistance of inside lithium ion cell, and the high rate performance of the lithium ion battery of raising has reduced the temperature rise of lithium ion battery cell when multiplying power discharging.
The lithium ion battery of the present embodiment is in charging process, the positive plate Shi Kongbo district 14 corresponding with being welded with negative electrode lug 22 Fu Kongbo districts 24, be not coated with active material, within the scope of this, can not discharge lithium ion, can not cause the problem of analysing lithium yet, thereby avoid occurring the problem of battery short circuit, improve battery quality.
Claims (5)
1. a lithium ion battery, comprise by positive plate, negative plate and be arranged on positive plate and negative plate between the battery of membrane winding moulding, described positive plate is provided with at least one section of welding anode ear Zheng Kongbo district, described negative plate is provided with at least one section of welding negative electrode lug Fu Kongbo district, it is characterized in that, position corresponding to described positive plate Yu Fukongbo district is provided with dodges Kong Bo district.
2. lithium ion battery as claimed in claim 1, is characterized in that, described Zheng Kongbo district and negative empty paper tinsel area overlapping.
3. lithium ion battery as claimed in claim 1, is characterized in that, described in dodge Kong Bo district and apply active material back to the one side in Fu Kongbo district.
4. lithium ion battery as claimed in claim 3, is characterized in that, Liang Gekongbo district adjacent on positive plate is corresponding with same Fu Kongbo district, and Gai Lianggekong paper tinsel district is connected.
5. lithium ion battery as claimed in claim 1, is characterized in that, described lug has the welding section of covering at least 2/3 pole piece breadth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420202714.6U CN203871434U (en) | 2014-04-23 | 2014-04-23 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420202714.6U CN203871434U (en) | 2014-04-23 | 2014-04-23 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203871434U true CN203871434U (en) | 2014-10-08 |
Family
ID=51652359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420202714.6U Expired - Lifetime CN203871434U (en) | 2014-04-23 | 2014-04-23 | Lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203871434U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183193A (en) * | 2017-12-22 | 2018-06-19 | 力神电池（苏州）有限公司 | A kind of preparation method of cylindrical lithium ion battery |
| CN110148777A (en) * | 2019-06-10 | 2019-08-20 | 合肥众禾动力新能源科技有限公司 | A kind of lithium ion battery centre tab core |
| CN110364674A (en) * | 2019-06-11 | 2019-10-22 | 温州大学新材料与产业技术研究院 | A kind of soft-package battery of high voltage and preparation method thereof |
| CN111682156A (en) * | 2020-06-19 | 2020-09-18 | 珠海冠宇电池股份有限公司 | Battery, preparation method thereof and electronic product |
| CN114628858A (en) * | 2021-09-22 | 2022-06-14 | 万向一二三股份公司 | Pole lug structure of cylindrical lithium ion battery pole piece |
-
2014
- 2014-04-23 CN CN201420202714.6U patent/CN203871434U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183193A (en) * | 2017-12-22 | 2018-06-19 | 力神电池（苏州）有限公司 | A kind of preparation method of cylindrical lithium ion battery |
| CN110148777A (en) * | 2019-06-10 | 2019-08-20 | 合肥众禾动力新能源科技有限公司 | A kind of lithium ion battery centre tab core |
| CN110364674A (en) * | 2019-06-11 | 2019-10-22 | 温州大学新材料与产业技术研究院 | A kind of soft-package battery of high voltage and preparation method thereof |
| CN111682156A (en) * | 2020-06-19 | 2020-09-18 | 珠海冠宇电池股份有限公司 | Battery, preparation method thereof and electronic product |
| US11962043B2 (en) | 2020-06-19 | 2024-04-16 | Zhuhai Cosmx Battery Co., Ltd. | Battery, manufacturing method thereof and electronic product |
| CN114628858A (en) * | 2021-09-22 | 2022-06-14 | 万向一二三股份公司 | Pole lug structure of cylindrical lithium ion battery pole piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 313100 Huzhou Province, Changxing County, painted Creek Industrial Park, Bao bridge road, No. 18 Patentee after: ZHEJIANG TIANNENG ENERGY TECHNOLOGY Co.,Ltd. Address before: 313100 Huzhou Province, Changxing County, painted Creek Industrial Park, Bao bridge road, No. 18 Patentee before: ZHEJIANG TIANNENG ENERGY TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 313100, No. 18, Qiao Qiao Road, Changxing County painting industrial park, Zhejiang, Huzhou Patentee after: Tianneng Shuai Fude Energy Co.,Ltd. Address before: 313100, No. 18, Qiao Qiao Road, Changxing County painting industrial park, Zhejiang, Huzhou Patentee before: ZHEJIANG TIANNENG ENERGY TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |