CN203674276U - Flexible packaged lithium ion battery - Google Patents
Flexible packaged lithium ion battery Download PDFInfo
- Publication number
- CN203674276U CN203674276U CN201420034558.7U CN201420034558U CN203674276U CN 203674276 U CN203674276 U CN 203674276U CN 201420034558 U CN201420034558 U CN 201420034558U CN 203674276 U CN203674276 U CN 203674276U
- Authority
- CN
- China
- Prior art keywords
- battery
- section
- lithium ion
- ion battery
- flexible packing
- 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
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 239000011888 foil Substances 0.000 claims abstract description 19
- 238000012856 packing Methods 0.000 claims description 38
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000009966 trimming Methods 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract 4
- 230000002146 bilateral effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000005538 encapsulation Methods 0.000 description 4
- 239000005030 aluminium foil Substances 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Images
Classifications
-
- 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
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a flexible packaged lithium ion battery. The flexible packaged lithium ion battery comprises a battery main body, a top sealing edge and lateral sealing edges; the battery main body comprises a battery and a battery packaging foil which covers the battery; the middle layer of the battery packaging foil is a metal layer; the lateral sealing edges are bent to form into more than one layer of folding structures; one ends of the folding structures, which are close to the battery top sealing edge, are provided with the cross section with the exposed metal layer in a trimming mode. According to the flexible packaged lithium ion battery, the cross section is trimmed at the front end of the folding structures of the lateral sealing edges, so that the metal layer of the battery packaging foil on one side or bilateral sides of the battery top sealing edge are exposed, and convenience is provided for detection of resistance between the battery packaging foil and an electrode.
Description
Technical field
The utility model belongs to lithium ion battery field, and more particularly, the utility model relates to a kind of double-fold flexible packing lithium ion battery of being convenient to detection.
Background technology
The battery core package foil of flexible packing lithium ion battery is made up of multilayer material, generally includes at the protective layer in outside, at the hot sealing layer of inner side and the water proof metal level (being generally aluminium foil layer) between protective layer and hot sealing layer.Above-mentioned battery battery core package foil is after heat-seal trimming, and the edge of water proof metal level can be because of exposed and extraneous short circuit.
For prevent the aluminium foil layer that leaks outside that trimming produces cause battery core corrosion or with extraneous short circuit, traditional Soft Roll encapsulation technology is generally to adopt gummed paper to wrap up the aluminium foil layer that leaks outside at battery edge sealing place; Wherein, double-fold technology is because be more conducive to improve energy content of battery density and reducing production costs than single flanging technology, and becomes gradually the developing direction of battery Soft Roll encapsulation.
On the other hand, finished product battery need to be tested the resistance value between water proof metal level and electrode conventionally.But, utilize the battery of double-fold technology encapsulation all not have metal level to expose in battery closedtop both sides, this has brought inconvenience greatly obviously to the test of battery, also just becomes urgent problem in the encapsulation of battery Soft Roll.
In view of this, necessary provide a kind of be convenient to detect double-fold flexible packing lithium ion battery.
Utility model content
The purpose of this utility model is: provide a kind of double-fold flexible packing lithium ion battery of being convenient to detection, to solve problems of the prior art.
In order to realize foregoing invention object, the utility model provides a kind of flexible packing lithium ion battery, it comprises battery core main body, closedtop limit and side sealing, and battery core main body comprises battery core and be wrapped in the battery core package foil outside battery core, and the intermediate layer of battery core package foil is metal level; Side sealing is bent into the folded edges more than one deck, and the folded edges of side sealing is cutting near the one end on battery closedtop limit the cross section that exposes metal level.
One as the utility model flexible packing lithium ion battery is improved, and the folded edges of described side sealing is double-deck folded edges.
One as the utility model flexible packing lithium ion battery is improved, and the cross section on described folded edges top is oblique section or arc section.
One as the utility model flexible packing lithium ion battery is improved, and the front end of described oblique section or arc section meets 0.2mm<L<H to the distance L of cell backside and the relation of folded edges height H; Wherein, the front end of oblique section or arc section refers to oblique section or arc section one end near battery closedtop limit, and cell backside refers to that side sealing bends the plane at front place.
One as the utility model flexible packing lithium ion battery is improved, and the rear end of described oblique section or arc section meets 0<W<S to the distance W of battery main body and the relation of battery closedtop limit width S; Wherein, the rear end of oblique section or arc section refers to oblique section or arc section one end away from battery closedtop limit.
One as the utility model flexible packing lithium ion battery is improved, and the cross section on described folded edges top is right-angle cross-section, and right-angle cross-section comprises the longitudinal section and the plane section that is parallel to battery closedtop limit perpendicular to battery closedtop limit.
One as the utility model flexible packing lithium ion battery is improved, and described plane section is to the distance L of cell backside ' meet 0.2mm<L ' <H with the relation of folded edges height H; Wherein, cell backside refers to that side sealing bends the plane at front place.
One as the utility model flexible packing lithium ion battery is improved, and described longitudinal section is to the distance W of battery main body ' meet 0<W ' <S with the relation of battery closedtop width S.
One as the utility model flexible packing lithium ion battery is improved, and the quantity of described side sealing is two, cuts the cross section that exposes metal level on the folded edges of wherein one or two side sealing.
Compared with prior art, the utility model flexible packing lithium ion battery cuts cross section by the folded edges front end at side sealing, make the metal level of battery core package foil of one or both sides, battery closedtop limit out exposed, for the detection of resistance between battery core package foil and electrode is provided convenience.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model flexible packing lithium ion battery and beneficial effect thereof are elaborated.
Fig. 1 and Fig. 2 are the preparation process schematic diagram of the utility model flexible packing lithium ion battery.
Fig. 3 is the part cross-sectional schematic of the utility model flexible packing lithium ion battery.
Fig. 4 is the structural representation of the utility model flexible packing lithium ion battery the first execution mode.
Fig. 5 is the enlarged drawing of A part in Fig. 4.
Fig. 6 is the structural representation of the utility model flexible packing lithium ion battery the second execution mode.
Fig. 7 is the enlarged drawing of B part in Fig. 6.
Fig. 8 is the structural representation of the utility model flexible packing lithium ion battery the 3rd execution mode.
Fig. 9 is the enlarged drawing of C part in Fig. 8.
Figure 10 is the structural representation of the utility model flexible packing lithium ion battery the 4th execution mode.
Embodiment
In order to make goal of the invention of the present utility model, technical scheme and useful technique effect thereof more clear, below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.Should be understood that, the embodiment of describing in this specification is only used to explain the utility model, is not intended to limit the utility model.
Refer to Fig. 1 to Fig. 3, the utility model flexible packing lithium ion battery comprises battery core main body 10, closedtop limit 20 and side sealing 30.Wherein, battery core main body 10 comprises battery core 12 and is wrapped in the battery core package foil 14 outside battery core 12; Battery core package foil 14 is sandwich construction, comprise be positioned at outside protective layer 142, be positioned at inner side hot sealing layer 144 and be positioned in the middle of metal level 146.Side sealing 30 twice bending and form double-deck folded edges 40, folded edges 40 comprises a flanging 42 and two flangings 44.
After side sealing 30 flangings, the exposed metal level 146 in seal place, both sides can be contained the inside at folded edges 40, therefore for the ease of detecting the resistance value between metal level 146 and electrode, the utility model flexible packing lithium ion battery also cuts the cross section (referring to Fig. 4 to Figure 10) that exposes metal level 146 on the folded edges 40 of one or both sides, and cross section is positioned at folded edges 40 one end near closedtop limit 20.
Refer to Fig. 4 and Fig. 5, the utility model flexible packing lithium ion battery the first execution mode is all to cut out oblique section 46a on the folded edges 40a of both sides.The front end (referring to oblique section 46a one end near battery closedtop limit 20) of described oblique section 46a is 0.5mm to the distance L of cell backside (referring to that side sealing 30 bends the plane at front place), and the relation of itself and folded edges height H meets 0.2mm<L<H; The rear end (referring to oblique section 46a one end away from battery closedtop limit 20) of oblique section is 0.2mm to the distance W of battery main body 10, and the relation of itself and battery closedtop limit width S meets 0<W<S.
Refer to Fig. 6 and Fig. 7, the utility model flexible packing lithium ion battery the second execution mode is all to cut out right-angle cross-section 46b on the folded edges 40b of both sides.Described right-angle cross-section 46b comprises the longitudinal section 460b and the plane section 462b that is parallel to battery closedtop limit 20 perpendicular to battery closedtop limit 20; Wherein, plane section 462b is to the cell backside distance L of (referring to that side sealing 30 bends the plane at front place) ' for 2mm, the relation of itself and folded edges height H meets 0.2mm<L ' <H; Longitudinal section 460b is to the distance W of battery main body 10 ' be 0.2mm, the relation of itself and battery closedtop limit width S meets 0<W ' <S.
Refer to Fig. 8 and Fig. 9, the utility model flexible packing lithium ion battery the 3rd execution mode is all to cut out arc section 46c on the folded edges 40c of both sides.The front end (referring to arc section 46c one end near battery closedtop limit 20) of described arc section 46c is to the cell backside distance L of (referring to that side sealing 30 bends the plane at front place) ' ' for 0.5mm, the relation of itself and folded edges height H meets 0.2mm<L ' ' <H; The rear end (referring to arc section 46c one end away from battery closedtop limit 20) of arc section is to the distance W of battery main body 10 ' ' be 0.2mm, the relation of itself and battery closedtop limit width S meets 0<W ' ' <S.
Referring to Figure 10, is only on the folded edges 40d of a side, to cut out oblique section 46d in the utility model flexible packing lithium ion battery the 4th execution mode.Because the structure of oblique section 46d of the 4th execution mode is identical with the structure of the oblique section 46a of the first execution mode, repeat no more herein.
The preparation process of the utility model flexible packing lithium ion battery is:
1) prepare original package structure battery core: utilize battery core package foil 14 to encapsulate battery core 12, prepare the original package structure battery core shown in Fig. 1 by trimming operation; Now, the metal level 146 at two side sealing 30 seal places can be out exposed, is easy to and extraneous short circuit;
2) prepare double-fold structure battery core: utilize the side sealing 30 of the original package structure battery core that double-fold machine prepared step 1) to carry out double-fold, obtain the battery core of double-fold structure shown in Fig. 2 and Fig. 3; Now, the metal level 146 at two side sealing 30 seal places has been contained the inside at folded edges 40, thereby has effectively prevented metal level 146 and extraneous short circuit, but has brought difficulty with interelectrode resistance also to test battery core package foil 14 simultaneously;
3) prepare finished product encapsulating structure battery core: use cutting knife in step 2) one or two folded edges 40 one end of the double-fold structure battery core that obtains cut out a cross section that exposes metal level 146, obtain the finished product encapsulating structure battery core shown in arbitrary execution mode in Fig. 4 to Figure 10; Now, the metal level 146 of the battery core package foil 14 of 20 one or both sides, battery closedtop limit can be out exposed, make the probe using while testing battery core package foil 14 with electrode resistance can directly touch the metal level 146 of battery core package foil 14, thereby provide convenience for detecting.
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 amendment to above-mentioned execution mode.Therefore, the utility model is not limited to embodiment disclosed and described above, 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 just for convenience of description, do not form any restriction to the utility model.
Claims (9)
1. a flexible packing lithium ion battery, it comprises battery core main body, closedtop limit and side sealing, and battery core main body comprises battery core and be wrapped in the battery core package foil outside battery core, and the intermediate layer of battery core package foil is metal level; Side sealing is bent into the folded edges more than one deck, it is characterized in that: the folded edges of described side sealing is cutting near the one end on battery closedtop limit the cross section that exposes metal level.
2. flexible packing lithium ion battery according to claim 1, is characterized in that: the folded edges of described side sealing is double-deck folded edges.
3. flexible packing lithium ion battery according to claim 1, is characterized in that: the cross section on described folded edges top is oblique section or arc section.
4. flexible packing lithium ion battery according to claim 3, is characterized in that: the front end of described oblique section or arc section meets 0.2mm<L<H to the distance L of cell backside and the relation of folded edges height H; Wherein, the front end of oblique section or arc section refers to oblique section or arc section one end near battery closedtop limit, and cell backside refers to that side sealing bends the plane at front place.
5. flexible packing lithium ion battery according to claim 3, is characterized in that: the rear end of described oblique section or arc section meets 0<W<S to the distance W of battery main body and the relation of battery closedtop limit width S; Wherein, the rear end of oblique section or arc section refers to oblique section or arc section one end away from battery closedtop limit.
6. flexible packing lithium ion battery according to claim 1, is characterized in that: the cross section on described folded edges top is right-angle cross-section, and right-angle cross-section comprises the longitudinal section and the plane section that is parallel to battery closedtop limit perpendicular to battery closedtop limit.
7. flexible packing lithium ion battery according to claim 6, is characterized in that: described plane section is to the distance L of cell backside ' meet 0.2mm<L ' <H with the relation of folded edges height H; Wherein, cell backside refers to that side sealing bends the plane at front place.
8. flexible packing lithium ion battery according to claim 6, is characterized in that: described longitudinal section is to the distance W of battery main body ' meet 0<W ' <S with the relation of battery closedtop width S.
9. flexible packing lithium ion battery according to claim 1, is characterized in that: the quantity of described side sealing is two, cuts the cross section that exposes metal level on the folded edges of wherein one or two side sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420034558.7U CN203674276U (en) | 2014-01-20 | 2014-01-20 | Flexible packaged lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420034558.7U CN203674276U (en) | 2014-01-20 | 2014-01-20 | Flexible packaged lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203674276U true CN203674276U (en) | 2014-06-25 |
Family
ID=50970540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420034558.7U Expired - Lifetime CN203674276U (en) | 2014-01-20 | 2014-01-20 | Flexible packaged lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203674276U (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489939A (en) * | 2015-08-03 | 2016-04-13 | 万向A一二三系统有限公司 | Method for preventing aluminum-plastic film from deforming during folding |
| WO2018049577A1 (en) * | 2016-09-13 | 2018-03-22 | 东莞新能源科技有限公司 | Secondary battery |
| WO2018049576A1 (en) * | 2016-09-13 | 2018-03-22 | 东莞新能源科技有限公司 | Soft pack battery case |
| WO2018049573A1 (en) * | 2016-09-13 | 2018-03-22 | 东莞新能源科技有限公司 | Battery cell periphery sealing process, and battery cell periphery sealing treatment device |
| CN107864243A (en) * | 2017-11-29 | 2018-03-30 | 广东欧珀移动通信有限公司 | Electronic installation |
| CN108428809A (en) * | 2017-02-15 | 2018-08-21 | 宁德新能源科技有限公司 | Soft-package battery |
| CN108963118A (en) * | 2018-07-18 | 2018-12-07 | 北京小米移动软件有限公司 | Battery core shell, battery and electronic equipment |
| WO2019127107A1 (en) * | 2017-12-27 | 2019-07-04 | 宁德新能源科技有限公司 | Battery |
| CN110828708A (en) * | 2018-08-08 | 2020-02-21 | 汕尾天贸新能源科技有限公司 | Aluminum-plastic film lithium ion battery and edge sealing process |
| CN111413634A (en) * | 2020-03-27 | 2020-07-14 | 惠州亿纬集能有限公司 | Soft package lithium battery insulation test method |
| CN113497310A (en) * | 2020-04-02 | 2021-10-12 | 丰田自动车株式会社 | Laminated power storage device and short-circuit inspection method therefor |
| WO2021249341A1 (en) * | 2020-06-08 | 2021-12-16 | 华为技术有限公司 | Lithium ion battery and terminal device comprising lithium ion battery |
| CN114447477A (en) * | 2022-04-08 | 2022-05-06 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
| WO2023097463A1 (en) * | 2021-11-30 | 2023-06-08 | 宁德新能源科技有限公司 | Battery and electrical device |
| WO2023115375A1 (en) * | 2021-12-22 | 2023-06-29 | 东莞新能源科技有限公司 | Electrochemical device and electronic device |
-
2014
- 2014-01-20 CN CN201420034558.7U patent/CN203674276U/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489939A (en) * | 2015-08-03 | 2016-04-13 | 万向A一二三系统有限公司 | Method for preventing aluminum-plastic film from deforming during folding |
| CN105489939B (en) * | 2015-08-03 | 2017-10-17 | 万向一二三股份公司 | A kind of method for preventing aluminum plastic film flanging deformation |
| WO2018049577A1 (en) * | 2016-09-13 | 2018-03-22 | 东莞新能源科技有限公司 | Secondary battery |
| WO2018049576A1 (en) * | 2016-09-13 | 2018-03-22 | 东莞新能源科技有限公司 | Soft pack battery case |
| WO2018049573A1 (en) * | 2016-09-13 | 2018-03-22 | 东莞新能源科技有限公司 | Battery cell periphery sealing process, and battery cell periphery sealing treatment device |
| CN108428809A (en) * | 2017-02-15 | 2018-08-21 | 宁德新能源科技有限公司 | Soft-package battery |
| CN107864243A (en) * | 2017-11-29 | 2018-03-30 | 广东欧珀移动通信有限公司 | Electronic installation |
| CN107864243B (en) * | 2017-11-29 | 2024-03-19 | 深圳市欢太科技有限公司 | Electronic device |
| WO2019127107A1 (en) * | 2017-12-27 | 2019-07-04 | 宁德新能源科技有限公司 | Battery |
| US11362363B2 (en) | 2017-12-27 | 2022-06-14 | Ningde Amperex Technology Limited | Battery |
| CN108963118A (en) * | 2018-07-18 | 2018-12-07 | 北京小米移动软件有限公司 | Battery core shell, battery and electronic equipment |
| CN110828708A (en) * | 2018-08-08 | 2020-02-21 | 汕尾天贸新能源科技有限公司 | Aluminum-plastic film lithium ion battery and edge sealing process |
| CN111413634A (en) * | 2020-03-27 | 2020-07-14 | 惠州亿纬集能有限公司 | Soft package lithium battery insulation test method |
| CN113497310A (en) * | 2020-04-02 | 2021-10-12 | 丰田自动车株式会社 | Laminated power storage device and short-circuit inspection method therefor |
| WO2021249341A1 (en) * | 2020-06-08 | 2021-12-16 | 华为技术有限公司 | Lithium ion battery and terminal device comprising lithium ion battery |
| WO2023097463A1 (en) * | 2021-11-30 | 2023-06-08 | 宁德新能源科技有限公司 | Battery and electrical device |
| WO2023115375A1 (en) * | 2021-12-22 | 2023-06-29 | 东莞新能源科技有限公司 | Electrochemical device and electronic device |
| CN114447477A (en) * | 2022-04-08 | 2022-05-06 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |