CN201868521U - Soft-packed lithium ion battery - Google Patents
Soft-packed lithium ion battery Download PDFInfo
- Publication number
- CN201868521U CN201868521U CN2010205461393U CN201020546139U CN201868521U CN 201868521 U CN201868521 U CN 201868521U CN 2010205461393 U CN2010205461393 U CN 2010205461393U CN 201020546139 U CN201020546139 U CN 201020546139U CN 201868521 U CN201868521 U CN 201868521U
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- Prior art keywords
- lithium ion
- ion battery
- limit
- battery
- sealing edge
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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 soft-packed lithium ion battery. The soft-packed lithium ion battery comprises a battery core with both a positive pole and a negative pole, and a packaging film used for encapsulating the battery core, wherein the packaging film is provided with a top sealing edge from which both the positive pole and the negative pole extend out, a bottom sealing edge opposite to the top sealing edge, and a lateral sealing edge positioned between the top sealing edge and the bottom sealing edge; an air bag is arranged on the packaging film on the side opposite to the lateral sealing edge; and a cut is formed at the corner of the boundary of the air bag and the bottom sealing edge. When the soft-packed lithium ion battery is transferred among a plurality of procedures, the cut ensures that stress of the corner is greatly reduced, so that the soft-packed lithium ion battery is prevented from corner damage, and contamination caused by leakage of electrolyte is avoided, accordingly, the safety performance of the soft-packed lithium ion battery is ensured.
Description
Technical field
The utility model relates to the lithium ion battery field, especially a kind of flexible packing lithium ion battery with good safety energy.
Background technology
Along with the continuous development of electronic technology, portable electron device such as MP3, MP4, DVD, notebook computer and electric automobile are more and more higher to the energy density and the requirement in useful life of battery.Flexible packing lithium ion battery has advantages such as energy density height and long service life, has therefore obtained using widely.
Made the influence with use the actual life of flexible packing lithium ion battery, usually, flexible packing lithium ion battery comprises the packaging film of a coiled battery and sealed package battery.Battery is packaged in injection electrolyte in back in the packaging film, through encapsulating, change into, vacuumize and forming battery after the sealing once more.
Usually, the size of the packaging film of sealed package battery is far longer than the size of battery, and the part that exceeds battery is served as airbag.This is that the product of part side reaction exists with gaseous form because flexible packing lithium ion battery in formation process some side reactions can take place, and airbag can be used to carry this portion gas.But, in manufacture process, flexible packing lithium ion battery usually after encapsulation because of reasons such as manual operations can bump with some hard objects inevitably, make packaging film wear and tear, corrode or leak easily near the place, position, angle of the lower edge of airbag one side.If leak in manufacture process, then the electrolyte of Guo Louing can pollute other batteries; If in use leak, then problem is more serious, is easy to cause security incident.
The use of flexible packing lithium ion battery is the process of a continuous charging and discharging, dynamic electrochemical reaction is constantly carried out in the inside of battery, there is multiple organic solvent the inside of battery, air in case take place to leak and touch in the packaging film of sealed package battery, organic solvent in the flexible packing lithium ion battery is met airborne water, just decompose rapidly and generation gas behind the oxygen, this not only can cause the cell expansion distortion, but also can be to the electrical property of battery (as capacity, cycle life, discharge platform etc.) cause adverse effect, had a strong impact on the useful life of flexible packing lithium ion battery, in addition also may be explosion caused etc. safety problem.
See also illustrated in figures 1 and 2ly, in order to address the above problem, method commonly used in the prior art is: after with packaging film 20 ' sealed package battery 10 ', in position, angle 206 ' spreading glue, treat to rely on its hardness to come shielding angle position 206 ' after the glue curing.Simultaneously, in order to prevent to come off after the glue curing, also need to locate to paste gummed paper 30 ' in position, angle 206 '.In the packaging process once more after battery changes into end, also need solidified glue and gummed paper 30 ' to be removed in the lump the protection complex procedures and the poor reliability of position, whole angle 206 '.
In view of this, necessary provide a kind of have good safety can flexible packing lithium ion battery.
The utility model content
The purpose of this utility model is: a kind of flexible packing lithium ion battery with good safety energy is provided.
To achieve these goals, the utility model provides a kind of flexible packing lithium ion battery, it comprises the battery that is provided with both positive and negative polarity and the packaging film of sealed package battery, packaging film be provided with both positive and negative polarity from its extended closedtop limit, the underseal limit relative with the closedtop limit, and the side seal limit between closedtop limit and underseal limit.Packaging film forms airbag in a side relative with the side seal limit, and the place, position, angle that airbag and underseal limit have a common boundary is provided with otch.
With respect to prior art, the utility model flexible packing lithium ion battery has the following advantages: when flexible packing lithium ion battery shifts between multiple working procedure, the stress that place, position, angle is subjected to that is arranged so that of otch significantly reduces, therefore can prevent that flexible packing lithium ion battery from the breakage of position, angle taking place, avoid the pollution that causes because of electrolyte leakage, guarantee the security performance of flexible packing lithium ion battery.
As a kind of improvement of the utility model flexible packing lithium ion battery, the position of described otch and size do not exceed the pre-packaged zone of position, angle.
As a kind of improvement of the utility model flexible packing lithium ion battery, described otch be shaped as right angle or smooth arc.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model flexible packing lithium ion battery and useful technique effect thereof are elaborated, wherein:
Fig. 1 is the structural representation of existing flexible packing lithium ion battery.
Fig. 2 is the upward view of flexible packing lithium ion battery shown in Figure 1.
Fig. 3 is the structural representation of the utility model flexible packing lithium ion battery.
Fig. 4 is the local enlarged diagram of the A of circle portion among Fig. 3.
Fig. 5 is the upward view of flexible packing lithium ion battery shown in Figure 3.
Embodiment
See also Fig. 3 to shown in Figure 5, the utility model flexible packing lithium ion battery comprises the packaging film 20 of battery 10 and sealed package battery 10.
The counterdie 201 of packaging film 20 and teleblem 202 correspondences be provided with anodal 102 with negative pole 104 from its extended closedtop limit 203, the underseal limit 205 relative with closedtop limit 203, and the side seal limit 204 between closedtop limit 203 and underseal limit 205, be equipped with polymer on closedtop limit 203, side seal limit 204 and the underseal limit 205.
The assembling process of the utility model flexible packing lithium ion battery is as follows: the counterdie 201 of packaging film 20 is launched, the bare cell core 10 for preparing is placed the depressed part of counterdie 201, the positive pole 102 of battery 10 and negative pole 104 extend outside the counterdie 201; Then, teleblem 202 is fitted on the battery 10, the closedtop limit 203 of counterdie 201 and teleblem 202, side seal limit 204 and 205 alignment of underseal limit are fitted; Subsequently, carry out pre-packaged to closedtop limit 203, side seal limit 204 and underseal limit 205 respectively: by giving the certain heat in closedtop limit 203, side seal limit 204 and underseal limit 205 and applying certain pressure, polymer consolute on it also is sealing adhesive together securely, be sealing adhesive and locate to form pre-packaged zone, the intersection of underseal limit 205 and airbag 208 forms position, angle 206; Again, the otch 30 of 206 places, position, angle processing in underseal limit 205 and airbag 208 boundaries is through pouring into electrolyte, change into, vacuumize and forming the utility model flexible packing lithium ion battery after the sealing once more.
It is pointed out that the position of otch 30 and the pre-packaged zone that size can not exceed position, angle 206: if otch 206 is excessive, then in the process of the perfusion electrolyte of postorder, electrolyte is drawn out of from otch 206 easily; If otch 206 is too small, then the battery 10 after the encapsulation is in repeatedly the touching of postorder operation, and 206 places, position, angle still can be subjected to constantly bending or impact more energetically, do not have the effect of protection.The concrete shape and size of otch 206 are decided according to different batteries, and its profile can be square or smooth circular arc.
In conjunction with top description as can be seen, when the utility model flexible packing lithium ion battery shifts between multiple working procedure, the stress that place, position, angle is subjected to that is arranged so that of otch significantly reduces, therefore can prevent that flexible packing lithium ion battery from the breakage of position, angle taking place, avoid the pollution that causes because of electrolyte leakage, guarantee the security performance of flexible packing lithium ion battery.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection range of claim of the present utility model modifications and changes more of the present utility model.In addition, although used some specific terms in this specification, these terms do not constitute any restriction to the utility model just for convenience of description.
Claims (3)
1. flexible packing lithium ion battery, it comprises the battery that is provided with both positive and negative polarity and the packaging film of sealed package battery, packaging film be provided with both positive and negative polarity from its extended closedtop limit, the underseal limit relative with the closedtop limit, and the side seal limit between closedtop limit and underseal limit, packaging film forms airbag in a side relative with the side seal limit, it is characterized in that: the place, position, angle that described airbag and underseal limit have a common boundary is provided with otch.
2. flexible packing lithium ion battery according to claim 1 is characterized in that: the position of described otch and size do not exceed the pre-packaged zone of position, angle.
3. flexible packing lithium ion battery according to claim 1 is characterized in that: described otch be shaped as right angle or smooth arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205461393U CN201868521U (en) | 2010-09-20 | 2010-09-20 | Soft-packed lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205461393U CN201868521U (en) | 2010-09-20 | 2010-09-20 | Soft-packed lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201868521U true CN201868521U (en) | 2011-06-15 |
Family
ID=44139666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205461393U Expired - Lifetime CN201868521U (en) | 2010-09-20 | 2010-09-20 | Soft-packed lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201868521U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637895A (en) * | 2012-04-10 | 2012-08-15 | 东莞市特耐克新能源科技有限公司 | Flexible-package lithium ion battery and method for improving electric capacity of battery |
| CN102709600A (en) * | 2012-01-12 | 2012-10-03 | 宁德新能源科技有限公司 | Method for preventing lithium ion battery corner from being damaged during flexible package |
| CN105280955A (en) * | 2014-06-17 | 2016-01-27 | 三星Sdi株式会社 | Rechargeable battery having corner folding portion |
| CN108390092A (en) * | 2018-01-30 | 2018-08-10 | 南京红太阳新能源有限公司 | A kind of liquid soft bag lithium ionic cell and its packaging technology |
| CN109821769A (en) * | 2019-03-20 | 2019-05-31 | 漳州青牛包装设备有限公司 | A kind of Soft Roll testing agency of six face vacuum packing product |
| CN110048036A (en) * | 2019-04-19 | 2019-07-23 | 桑顿新能源科技有限公司 | Reinforcing rib piece and preparation method thereof, battery core and preparation method thereof and soft-package battery |
| CN113241466A (en) * | 2021-05-11 | 2021-08-10 | 宜春清陶能源科技有限公司 | Packaging process of battery |
| CN113675521A (en) * | 2021-07-02 | 2021-11-19 | 欣旺达电动汽车电池有限公司 | Insulating film and lithium ion battery coating method |
-
2010
- 2010-09-20 CN CN2010205461393U patent/CN201868521U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709600A (en) * | 2012-01-12 | 2012-10-03 | 宁德新能源科技有限公司 | Method for preventing lithium ion battery corner from being damaged during flexible package |
| CN102709600B (en) * | 2012-01-12 | 2016-11-16 | 宁德新能源科技有限公司 | A kind of method preventing flexible packing lithium ion battery angle bit loss wound |
| CN102637895A (en) * | 2012-04-10 | 2012-08-15 | 东莞市特耐克新能源科技有限公司 | Flexible-package lithium ion battery and method for improving electric capacity of battery |
| CN105280955A (en) * | 2014-06-17 | 2016-01-27 | 三星Sdi株式会社 | Rechargeable battery having corner folding portion |
| US10490781B2 (en) | 2014-06-17 | 2019-11-26 | Samsung Sdi Co., Ltd. | Rechargeable battery having corner folding portion |
| CN108390092A (en) * | 2018-01-30 | 2018-08-10 | 南京红太阳新能源有限公司 | A kind of liquid soft bag lithium ionic cell and its packaging technology |
| CN109821769A (en) * | 2019-03-20 | 2019-05-31 | 漳州青牛包装设备有限公司 | A kind of Soft Roll testing agency of six face vacuum packing product |
| CN110048036A (en) * | 2019-04-19 | 2019-07-23 | 桑顿新能源科技有限公司 | Reinforcing rib piece and preparation method thereof, battery core and preparation method thereof and soft-package battery |
| CN110048036B (en) * | 2019-04-19 | 2024-05-17 | 桑顿新能源科技有限公司 | Reinforcing rib sheet and preparation method thereof, battery cell and preparation method thereof, and soft package battery |
| CN113241466A (en) * | 2021-05-11 | 2021-08-10 | 宜春清陶能源科技有限公司 | Packaging process of battery |
| CN113241466B (en) * | 2021-05-11 | 2022-07-26 | 宜春清陶能源科技有限公司 | Packaging process of battery |
| CN113675521A (en) * | 2021-07-02 | 2021-11-19 | 欣旺达电动汽车电池有限公司 | Insulating film and lithium ion battery coating method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180614 Address after: 352100 Xingang Road, Zhangwan Town, Jiaocheng District, Ningde, Fujian 1 Co-patentee after: Dongguan Amperex Technology Co., Ltd. Patentee after: Ningde Amperex Technology Ltd. Address before: 523080 new energy technology park, Baima management area, Nancheng District, Dongguan, Guangdong Co-patentee before: Dongguan Amperex Technology Co., Ltd. Patentee before: Dongguan New Energy Source Electronic Sci-Tech Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |