CN106953032B - Lithium ion battery packaging structure and packaging method thereof - Google Patents
Lithium ion battery packaging structure and packaging method thereof Download PDFInfo
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- CN106953032B CN106953032B CN201710144859.3A CN201710144859A CN106953032B CN 106953032 B CN106953032 B CN 106953032B CN 201710144859 A CN201710144859 A CN 201710144859A CN 106953032 B CN106953032 B CN 106953032B
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 57
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000010410 layer Substances 0.000 claims abstract description 198
- 239000000084 colloidal system Substances 0.000 claims abstract description 88
- 239000011241 protective layer Substances 0.000 claims abstract description 30
- 238000007731 hot pressing Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims description 26
- 238000000576 coating method Methods 0.000 claims description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical group CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 10
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention belongs to the technical field of batteries, and particularly relates to a lithium ion battery packaging structure which comprises a naked battery cell, a first shell and a second shell, wherein the thickness of the first shell is larger than that of the second shell, a first colloid layer is coated on one surface of the first shell, the second shell comprises a framework layer, a second colloid layer and a protective layer, the second colloid layer is coated on one surface of the framework layer, the protective layer is coated on the other surface of the framework layer, and the naked battery cell is packaged between the first shell and the second shell in a hot-pressing packaging mode of the first colloid layer and the second colloid layer. The second casing is weak for first casing, and when taking place thermal runaway, the heat can strike the release to the direction of second casing, and the direction of battery burning or explosion is towards the second casing promptly, therefore, the user can avoid the direction of burning or explosion to face towards user oneself or other people according to the safety suggestion, reduces the emergence of incident. In addition, the invention also provides a packaging method of the lithium ion battery.
Description
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to a lithium ion battery packaging structure and a packaging method thereof.
Background
With the development of modern society, various mobile devices such as video cameras, notebook computers, portable DVDs, digital cameras, etc. are increasingly used, and thus a large number of high-energy batteries are required. A lithium ion secondary battery is a battery having a high energy density, and thus is widely used in various mobile devices.
The traditional packaging method of the lithium ion battery is to use a composite aluminum-plastic film, an aluminum shell or a stainless steel shell for packaging. The heat-sealed composite aluminum-plastic film has high safety, can achieve the pressure relief effect in a packaging failure mode when the internal pressure exceeds the standard, but has poor puncture resistance of the material; the aluminum shell and the stainless steel shell have strong anti-piercing capacity, and the air pressure is increased due to the fact that the packing binding force is large, so that the explosion risk is increased. In the traditional packaging method, when the battery has internal short circuit or serious side reaction and the like, which cause serious thermal runaway inside, the battery can have combustion or explosion phenomena and cause damage to users of the battery; meanwhile, as the direction of combustion or explosion is random, a user cannot selectively avoid the explosion, so that the risk probability of injury is increased.
Disclosure of Invention
One of the objects of the present invention is: aiming at the defects of the prior art, the lithium ion battery packaging structure is provided, so that flame or explosion can be effectively prevented from occurring and facing to a user or others, and safety accidents are reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a lithium ion battery packaging structure, includes naked electric core, first casing and second casing, the thickness of first casing is greater than the thickness of second casing, the one side coating of first casing has first colloid layer, the second casing includes framework layer, second colloid layer and protective layer, the second colloid layer coat in the one side of framework layer, the protective layer coat in the another side on framework layer, naked electric core passes through first colloid layer with the mode of second colloid layer hot pressing encapsulation is packaged in first casing with between the second casing.
As an improvement of the lithium ion battery packaging structure of the present invention, the frame layer is a square structure, and the second colloid layer is coated on the edges of the periphery of the frame layer, or the second colloid layer is coated on the whole surface of the frame layer.
As an improvement of the lithium ion battery packaging structure of the present invention, the first casing includes an accommodating portion and an adhesive portion connected to the accommodating portion, the bare cell is accommodated in the accommodating portion, and the first colloid layer is coated on the adhesive portion.
The improved lithium ion battery packaging structure further comprises a heat-resistant layer, wherein the heat-resistant layer is coated on the containing part and is a ethyl silicate layer, a fluorine resin layer or an organic silicon layer. The heat-resistant layer may be coated on either one side of the receiving part or both sides of the receiving part. The ethyl silicate, the fluororesin or the organic silicon have high heat resistance, so that heat emitted by the battery core is effectively isolated, the condition of scalding or burning in the use of the battery can be effectively avoided, the interference of external heat radiation on the performance of the battery can be effectively avoided, and the safe service life of the battery is prolonged.
As an improvement of the lithium ion battery packaging structure, the first shell is made of any one of aluminum, stainless steel and heat conducting plastic; the thickness of the first shell is 0.1-0.5 mm. Aluminum, stainless steel and heat conducting plastic have certain toughness, are not easy to damage, and can resist electrolyte corrosion.
As an improvement of the lithium ion battery packaging structure, the framework layer is an aluminum layer or a stainless steel layer, and the thickness of the framework layer is 0.01-0.05 mm. The metal aluminum and the stainless steel are not easy to damage and have certain heat conduction capacity, heat uniformity in the heat packaging process can be assisted, and packaging reliability is guaranteed.
As an improvement of the lithium ion battery packaging structure of the present invention, the first colloid layer and the second colloid layer are both polypropylene resin layers or ABS resin layers.
As an improvement of the lithium ion battery packaging structure, the thickness of the first colloid layer and the thickness of the second colloid layer are both 0.02-0.05 mm.
As an improvement of the lithium ion battery packaging structure, the protective layer is a nylon layer or a polyvinyl chloride layer; the thickness of the protective layer is 0.01-0.05 mm.
The invention has the beneficial effects that: the invention provides a lithium ion battery packaging structure which comprises a naked battery cell, a first shell and a second shell, wherein the thickness of the first shell is larger than that of the second shell, a first colloid layer is coated on one surface of the first shell, the second shell comprises a framework layer, a second colloid layer and a protective layer, the second colloid layer is coated on one surface of the framework layer, the protective layer is coated on the other surface of the framework layer, and the naked battery cell is packaged between the first shell and the second shell in a hot-pressing packaging mode through the first colloid layer and the second colloid layer. The second casing is weak for first casing, and when taking place thermal runaway, the heat can strike the release to the direction of second casing, and the direction of battery burning or explosion is towards the second casing promptly, therefore, the user can avoid the direction of burning or explosion to face towards user oneself or other people according to the safety suggestion, reduces the emergence of incident.
Another object of the present invention is to provide a method for packaging a lithium ion battery, comprising the following steps:
coating a first colloid layer on one surface of the bonding part, and coating a heat-resistant layer on at least one surface of the accommodating part; coating a second colloid layer at the edge of the periphery of one surface of the framework layer or coating the whole surface of one surface of the framework layer with the second colloid layer, and coating a protective layer on the other surface of the framework layer;
step two, packaging the naked battery core between the first shell and the second shell in a hot-pressing packaging mode through the first colloid layer and the second colloid layer to form a preliminarily packaged lithium ion battery;
and step three, injecting liquid into the battery obtained in the step two, and sequentially carrying out pre-sealing, formation and re-packaging to obtain the packaged lithium ion battery.
Compared with the prior art, the packaging method of the lithium ion battery is similar to the traditional aluminum plastic film packaging battery, and the additional cost is not increased; when thermal runaway occurs, the user can avoid the direction of combustion or explosion from facing the user or others according to the safety prompt; more excellent, because first casing has the heat-resistant layer for the heat that electric core gived off is effectively isolated, can effectively avoid scalding or the condition of burn in using the battery thing, also can effectively avoid external thermal radiation to the interference of battery performance, has promoted the safe life of battery.
Drawings
FIG. 1 is a schematic diagram of the present invention.
FIG. 2 is a second schematic structural diagram of the present invention.
Fig. 3 is a third schematic structural diagram of the present invention.
Wherein: 1-naked electric core, 2-first shell, 3-second shell, 21-containing part, 22-bonding part, 23-first colloid layer, 24-heat-resistant layer, 31-framework layer, 32-protective layer and 33-second colloid layer.
Detailed Description
The present invention and its advantages will be further described in detail with reference to the following detailed description and the accompanying drawings, but the present invention is not limited thereto.
Example 1
As shown in fig. 1, a lithium ion battery packaging structure, including naked electric core 1, first casing 2 and second casing 3, the thickness of first casing 2 is greater than the thickness of second casing 3, the one side coating of first casing 2 has first colloid layer 23, second casing 3 includes framework layer 31, second colloid layer 33 and protective layer 32, second colloid layer 33 coats in the one side of framework layer 31, protective layer 32 coats in the another side of framework layer 31, naked electric core 1 encapsulates between first casing 2 and second casing 3 through the mode of first colloid layer 23 and the encapsulation of second colloid layer 33 hot pressing. The frame layer 31 is a square structure, and the second colloid layer 33 is coated on the edges of the frame layer 31. First casing 2 includes accommodating part 21 and the bonding portion 22 of being connected with accommodating part 21, and naked electric core 1 holds in accommodating part 21, and first colloid layer 23 coats in bonding portion 22. The first shell 2 is made of aluminum; the thickness of the first housing 2 is 0.1 mm. The framework layer 31 is an aluminum layer, and the thickness of the framework layer 31 is 0.01 mm. The first colloid layer 23 and the second colloid layer 33 are both polypropylene resin layers. The thickness of the first glue layer 23 and the thickness of the second glue layer 33 are both 0.02 mm. The protective layer 32 is a nylon layer; the thickness of the protective layer 32 is 0.01 mm.
The lithium ion battery package structure of the present embodiment further includes a heat-resistant layer 24, the heat-resistant layer 24 is coated on the outer side of the accommodating portion 21, and the heat-resistant layer 24 is a silicate layer.
Example 2
As shown in fig. 2, a lithium ion battery packaging structure, including naked electric core 1, first casing 2 and second casing 3, the thickness of first casing 2 is greater than the thickness of second casing 3, the one side coating of first casing 2 has first colloid layer 23, second casing 3 includes framework layer 31, second colloid layer 33 and protective layer 32, second colloid layer 33 coats in the one side of framework layer 31, protective layer 32 coats in the another side of framework layer 31, naked electric core 1 encapsulates between first casing 2 and second casing 3 through the mode of first colloid layer 23 and the encapsulation of second colloid layer 33 hot pressing. The frame layer 31 has a square structure, and the second colloid layer 33 is coated on the whole surface of the frame layer 31. First casing 2 includes accommodating part 21 and the bonding portion 22 of being connected with accommodating part 21, and naked electric core 1 holds in accommodating part 21, and first colloid layer 23 coats in bonding portion 22. The first shell 2 is made of stainless steel; the thickness of the first housing 2 is 0.3 mm. The framework layer 31 is a stainless steel layer, and the thickness of the framework layer 31 is 0.03 mm. The first colloid layer 23 and the second colloid layer 33 are both ABS resin layers. The thickness of the first colloid layer 23 and the thickness of the second colloid layer 33 are both 0.03 mm. The protective layer 32 is a polyvinyl chloride layer; the thickness of the protective layer 32 is 0.03 mm.
The lithium ion battery package structure of the present embodiment further includes a heat-resistant layer 24, the heat-resistant layer 24 is coated on the inner side of the accommodating portion 21, and the heat-resistant layer 24 is a fluororesin layer.
Example 3
As shown in fig. 3, a lithium ion battery packaging structure, including naked electric core 1, first casing 2 and second casing 3, the thickness of first casing 2 is greater than the thickness of second casing 3, the one side coating of first casing 2 has first colloid layer 23, second casing 3 includes framework layer 31, second colloid layer 33 and protective layer 32, second colloid layer 33 coats in the one side of framework layer 31, protective layer 32 coats in the another side of framework layer 31, naked electric core 1 encapsulates between first casing 2 and second casing 3 through the mode of first colloid layer 23 and the encapsulation of second colloid layer 33 hot pressing. The frame layer 31 is a square structure, and the second colloid layer 33 is coated on the edges of the frame layer 31. First casing 2 includes accommodating part 21 and the bonding portion 22 of being connected with accommodating part 21, and naked electric core 1 holds in accommodating part 21, and first colloid layer 23 coats in bonding portion 22. The first shell 2 is made of heat-conducting plastic; the thickness of the first housing 2 is 0.5 mm. The framework layer 31 is a stainless steel layer, and the thickness of the framework layer 31 is 0.05 mm. The first colloid layer 23 and the second colloid layer 33 are both ABS resin layers. The thickness of the first colloid layer 23 and the thickness of the second colloid layer 33 are both 0.05 mm. The protective layer 32 is a nylon layer; the thickness of the protective layer 32 is 0.05 mm.
The lithium ion battery package structure of this embodiment further includes a heat-resistant layer 24, where the heat-resistant layer 24 is coated on both sides of the accommodating portion 21, and the heat-resistant layer 24 is an organic silicon layer.
Example 4
The packaging method of the lithium ion battery packaging structure of embodiment 1 includes the following steps:
coating a first colloid layer 23 on one surface of an adhesive part 22 and coating a heat-resistant layer 24 on the outer side of an accommodating part 21; coating a second colloid layer 33 at the edge of the periphery of one surface of the framework layer 31, and coating a protective layer 32 on the other surface of the framework layer 31;
step two, packaging the bare cell 1 between the first shell 2 and the second shell 3 in a hot-pressing packaging mode through the first colloid layer 23 and the second colloid layer 33 to form a preliminarily packaged lithium ion battery;
and step three, injecting liquid into the battery obtained in the step two, and sequentially carrying out pre-sealing, formation and re-packaging to obtain the packaged lithium ion battery.
Example 5
The packaging method of the lithium ion battery packaging structure of embodiment 2 includes the following steps:
step one, coating a first colloid layer 23 on one surface of an adhesive part 22, and coating a heat-resistant layer 24 on the inner side of an accommodating part 21; coating the second colloid layer 33 on the whole surface of one side of the framework layer 31, and coating the protective layer 32 on the other side of the framework layer 31;
step two, packaging the bare cell 1 between the first shell 2 and the second shell 3 in a hot-pressing packaging mode through the first colloid layer 23 and the second colloid layer 33 to form a preliminarily packaged lithium ion battery;
and step three, injecting liquid into the battery obtained in the step two, and sequentially carrying out pre-sealing, formation and re-packaging to obtain the packaged lithium ion battery.
Example 6
The packaging method of the lithium ion battery packaging structure of embodiment 3 includes the following steps:
coating a first colloid layer 23 on one surface of an adhesive part 22 and coating a heat-resistant layer 24 on two surfaces of an accommodating part 21; coating a second colloid layer 33 at the edge of the periphery of one surface of the framework layer 31, and coating a protective layer 32 on the other surface of the framework layer 31;
step two, packaging the bare cell 1 between the first shell 2 and the second shell 3 in a hot-pressing packaging mode through the first colloid layer 23 and the second colloid layer 33 to form a preliminarily packaged lithium ion battery;
and step three, injecting liquid into the battery obtained in the step two, and sequentially carrying out pre-sealing, formation and re-packaging to obtain the packaged lithium ion battery.
Variations and modifications to the above-described embodiments may also occur to those skilled in the art, which fall within the scope of the invention as disclosed and taught herein. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious improvement, replacement or modification made by those skilled in the art based on the present invention is within the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (8)
1. A lithium ion battery packaging structure is characterized in that: the battery comprises a naked battery cell, a first shell and a second shell, wherein the thickness of the first shell is greater than that of the second shell, one surface of the first shell is coated with a first colloid layer, the second shell comprises a framework layer, a second colloid layer and a protective layer, the second colloid layer is coated on one surface of the framework layer, the protective layer is coated on the other surface of the framework layer, and the naked battery cell is packaged between the first shell and the second shell in a hot-pressing packaging mode through the first colloid layer and the second colloid layer; the first shell comprises an accommodating part and an adhesion part connected with the accommodating part, the bare cell is accommodated in the accommodating part, and the first colloid layer is coated on the adhesion part; the first shell further comprises a heat-resistant layer, the heat-resistant layer is coated on the containing part, and the heat-resistant layer is a ethyl silicate layer or an organic silicon layer; the heat-resistant layer is coated on two sides of the accommodating part at the same time.
2. The lithium ion battery package structure of claim 1, wherein: the framework layer is of a square structure, and the second colloid layer is coated on the edges of the periphery of the framework layer, or coated on the whole surface of the framework layer.
3. The lithium ion battery package structure of claim 1, wherein: the first shell is made of any one of aluminum, stainless steel and heat conducting plastic; the thickness of the first shell is 0.1-0.5 mm.
4. The lithium ion battery package structure of claim 1, wherein: the framework layer is an aluminum layer or a stainless steel layer, and the thickness of the framework layer is 0.01-0.05 mm.
5. The lithium ion battery package structure of claim 1, wherein: the first colloid layer and the second colloid layer are both polypropylene resin layers or ABS resin layers.
6. The lithium ion battery package structure of claim 1, wherein: the thickness of the first colloid layer and the thickness of the second colloid layer are both 0.02-0.05 mm.
7. The lithium ion battery package structure of claim 1, wherein: the protective layer is a nylon layer or a polyvinyl chloride layer; the thickness of the protective layer is 0.01-0.05 mm.
8. The packaging method of the lithium ion battery packaging structure according to any one of claims 1 to 7, characterized by comprising the following steps:
coating a first colloid layer on one surface of the bonding part, and coating a heat-resistant layer on two surfaces of the accommodating part; coating a second colloid layer at the edge of the periphery of one surface of the framework layer or coating the whole surface of one surface of the framework layer with the second colloid layer, and coating a protective layer on the other surface of the framework layer;
step two, packaging the naked battery core between the first shell and the second shell in a hot-pressing packaging mode through the first colloid layer and the second colloid layer to form a preliminarily packaged lithium ion battery;
and step three, injecting liquid into the battery obtained in the step two, and sequentially carrying out pre-sealing, formation and re-packaging to obtain the packaged lithium ion battery.
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| CN201710144859.3A CN106953032B (en) | 2017-03-13 | 2017-03-13 | Lithium ion battery packaging structure and packaging method thereof |
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| CN109986850B (en) * | 2017-12-29 | 2021-11-02 | 宁德时代新能源科技股份有限公司 | Lithium ion battery and aluminum plastic film |
| CN112467267A (en) * | 2020-11-30 | 2021-03-09 | 湖南立方新能源科技有限责任公司 | Production process of button battery |
| CN115332691B (en) * | 2022-10-13 | 2023-03-24 | 宁德新能源科技有限公司 | Packaging bag, electrochemical device, and electronic apparatus |
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| CN1833325A (en) * | 2003-08-08 | 2006-09-13 | Nec拉米利翁能源株式会社 | Cell coated with film and manufacturing method thereof |
| CN1992375A (en) * | 2005-12-31 | 2007-07-04 | 财团法人工业技术研究院 | Energy-storage device, package structure of energy-storage device and method for fabrication thereof |
| CN103887452A (en) * | 2014-02-26 | 2014-06-25 | 明基材料有限公司 | Battery packaging film and preparation method of battery packaging film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1833325A (en) * | 2003-08-08 | 2006-09-13 | Nec拉米利翁能源株式会社 | Cell coated with film and manufacturing method thereof |
| CN1992375A (en) * | 2005-12-31 | 2007-07-04 | 财团法人工业技术研究院 | Energy-storage device, package structure of energy-storage device and method for fabrication thereof |
| CN103887452A (en) * | 2014-02-26 | 2014-06-25 | 明基材料有限公司 | Battery packaging film and preparation method of battery packaging film |
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Denomination of invention: A packaging structure and packaging method for lithium-ion batteries Effective date of registration: 20230829 Granted publication date: 20200331 Pledgee: Agricultural Bank of China Limited Zhuzhou branch Pledgor: HUNAN LIFANG NEW ENERGY SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2023980054119 |