CN202585549U - Flexible-packaged lithium ion battery - Google Patents
Flexible-packaged lithium ion battery Download PDFInfo
- Publication number
- CN202585549U CN202585549U CN2012201040572U CN201220104057U CN202585549U CN 202585549 U CN202585549 U CN 202585549U CN 2012201040572 U CN2012201040572 U CN 2012201040572U CN 201220104057 U CN201220104057 U CN 201220104057U CN 202585549 U CN202585549 U CN 202585549U
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- China
- Prior art keywords
- lithium ion
- ion battery
- layer
- flexible
- flexible packing
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- 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
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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 belongs to the technical field of lithium ion batteries, and particularly relates to a flexible-packaged lithium ion battery. The flexible-packaged lithium ion battery comprises a battery cell, a packaging bag used to contain the battery cell, a top cover fixedly mounted at the front end of the battery cell, and a bottom cover fixedly mounted at the bottom of the battery cell. The packaging bag comprises a metal layer and a plastic layer arranged above the metal layer. Due to the fact that the packaging bag comprises the metal layer and the plastic layer, and the metal layer has enough hardness, mechanical strength of the flexible-packaged lithium ion battery can be guaranteed; and the plastic layer can be hot melted, and therefore packaging of the battery cell in the production process is facilitated. Since the packaging bag is used, a metal shell added outside the battery cell in the prior art is eliminated, and energy density of the flexible-packaged lithium ion battery can be improved under the premise that the mechanical strength is guaranteed. In addition, the flexible-packaged lithium ion battery is simple in manufacturing process, and improvement of production efficiency of the flexible-packaged lithium ion battery is facilitated.
Description
Technical field
The utility model belongs to technical field of lithium ion, relates in particular to a kind of flexible packing lithium ion battery.
Background technology
Lithium ion battery is as a kind of secondary cell of environmental protection, obtained extensive use in fields such as portable set such as mobile phone, video camera, notebook computers.Yet; Along with development of modern society, numerous portable sets all stride forward to intelligent, multifunction, in order to satisfy its requirement to capacity and power; Guarantee the service time that it is sufficient, must have higher energy density as the power source of the energy supply element of these portable sets.
There is the problem that packing film intensity is lower, can not effectively resist external impacts in existing flexible packing lithium ion battery, fallen, pushed, battery is easy to generate distortion when colliding, and causes potential safety hazards such as flexible packing lithium ion battery inside is short-circuited.In order to increase the mechanical strength of flexible packing lithium ion battery, industry generally adds metal shell in the flexible packing lithium ion battery outside at present.But, add the energy density that metal shell can reduce battery greatly.
In view of this, necessary a kind of mechanical strength that can guarantee battery is provided, can improves the flexible packing lithium ion battery of energy content of battery density again.
The utility model content
The purpose of the utility model is: to the deficiency of prior art, and a kind of mechanical strength that can guarantee battery is provided, can improves the flexible packing lithium ion battery of energy content of battery density again.
In order to achieve the above object, the technical scheme of the utility model is following:
A kind of flexible packing lithium ion battery; Comprise electric core, be used to hold said electric core packaging bag, be fixedly mounted on the top cover of said electric core front end and be fixedly mounted on the bottom of said electric core bottom, said packaging bag comprises metal level and is arranged on the plastic layer on the said metal level.
Wherein, metal level has enough hardness, can satisfy the requirement of mechanical strength of battery; But the plastic layer hot melt is convenient in the production process encapsulation to electric core, and metal level is outer, and plastic layer is an internal layer.
Said electric core comprise according to the electrode film that is coated with positive electrode active materials, barrier film, be coated with negative active core-shell material the negative electrode plate sequential volume around the electric core that forms; Also comprise the electric core that several electrode films, barrier film, negative electrode plate are formed by stacking; The monomer electricity core of perhaps making with the flexible modified method of all the other industry, or by a plurality of electric cores also, the combined electrical core formed of series system.
As a kind of improvement of the utility model flexible packing lithium ion battery, the thickness of said plastic layer is 25～80um.If the thickness of plastic layer is too thick, can considerable influence be arranged to the energy density of battery, and, then be unfavorable for the encapsulation of electric core if the thickness of plastic layer is too thin.
As a kind of improvement of the utility model flexible packing lithium ion battery, said metal layer thickness is 30～120um.If metal layer thickness is too thick, can considerable influence be arranged to the energy density of battery, and, then be unfavorable for the raising of battery machine intensity if metal layer thickness is too thin.
As a kind of improvement of the utility model flexible packing lithium ion battery, said plastic layer is polypropylene layer or polyethylene layer.
As a kind of improvement of the utility model flexible packing lithium ion battery, said metal level is aluminium lamination, aluminium alloy layer or stainless steel layer, is preferably stainless steel layer, because stainless steel layer has certain water proofing property.
As a kind of improvement of the utility model flexible packing lithium ion battery, said metal level is connected through the heat fusion with plastic layer.
As a kind of improvement of the utility model flexible packing lithium ion battery, a surface of said metal level is provided with plastic layer, and wherein metal level is outer, and plastic layer is an internal layer.
As a kind of improvement of the utility model flexible packing lithium ion battery, said battery also comprises and is positioned at outermost gummed paper layer.
With respect to prior art, the beneficial effect of the utility model is:
The packaging bag that the utility model adopts comprises metal level and plastic layer, and metal level wherein has enough hardness, can guarantee the mechanical strength of battery, but the plastic layer hot melt is convenient in the production process encapsulation to electric core.After adopting this packaging bag, saved the outside additional metal-back of electric core in the prior art, under the prerequisite that guarantees mechanical strength, the energy density of battery has been got a promotion.In addition, the utility model preparation section is simple, helps to improve the production efficiency of battery.
Description of drawings
Fig. 1 is the structural representation of the packaging bag of the utility model;
Fig. 2 is the exploded view (not comprising the gummed paper layer) of the utility model;
Fig. 3 is the structure chart of the utility model.
Embodiment
Below in conjunction with Figure of description and embodiment, the utility model and useful technique effect thereof are elaborated, but the embodiment of the utility model is not limited in this.
Extremely shown in Figure 3 like Fig. 1; A kind of flexible packing lithium ion battery of the utility model; Comprise electric core 2, be used to hold said electric core 2 packaging bag 1, be fixedly mounted on the top cover 3 of said electric core 2 front ends and be fixedly mounted on the bottom 4 of said electric core 2 bottoms, said packaging bag 1 comprises metal level 11 and is arranged on the plastic layer 12 (as shown in Figure 1) on the said metal level 11.
Wherein, the thickness of said plastic layer 12 is 25～80um.
The thickness of said metal level 11 is 30～120um.
Said plastic layer 12 is polypropylene layer or polyethylene layer.
Said metal level 11 is aluminium lamination, aluminium alloy layer or stainless steel layer.
Said metal level 11 is connected through the heat fusion with plastic layer 12.
A surface of said metal level 11 is provided with plastic layer 12.Wherein metal level 11 is outer, and plastic layer 12 is an internal layer.
Said battery also comprises and is positioned at outermost gummed paper layer 5.
The preparation process prescription of the utility model is following: packaging bag 1 is stamped out the dell district that is used to hold electric core 2; And reservation is used to store the airbag district of formation gas; The mode that adopts heat-sealing is closedtop limit and the sealing of left side edge sealing, makes electric core 2 contain that it is interior and expose lug, in electric core 2, injects electrolyte then; The mode that adopts heat-sealing changes into the sealing of airbag limit afterwards.Said packaging bag 1 has double-layer structure, promptly is positioned at outer field stainless steel layer and the polyethylene layer that is positioned at nexine, and wherein the thickness of stainless steel layer is 30～120um, and the thickness of polyethylene layer is 25～80um.
After changing into end, the gas in the airbag district is drained, the mode that adopts heat-sealing afterwards behind the excision airbag district, is carried out shaping to electric core 2 with right side edge sealing vacuum seal, makes its left side edge sealing and right side edge sealing be adjacent to electric core 2 main bodys.
To be fixedly installed in electric core 2 closedtop positions through PUR with the top cover 3 of baffle then; Bottom 4 is fixedly installed in electric core 2 bottoms through PUR; Last electric core 2, top cover 2 and bottom 4 outer wrap one deck gummed papers 5 after assembling constitute flexible packing lithium ion battery.
According to the announcement and the guidance of above-mentioned specification, 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 is in the protection range of the claim that also should fall into the utility model to some modifications and the change of the utility model.In addition, although used some specific terms in this specification, these terms are explanation for ease just, the utility model is not constituted any restriction.
Claims (8)
1. flexible packing lithium ion battery; Comprise electric core, be used to hold said electric core packaging bag, be fixedly mounted on the top cover of said electric core front end and be fixedly mounted on the bottom of said electric core bottom, it is characterized in that: said packaging bag comprises metal level and is arranged on the plastic layer on the said metal level.
2. flexible packing lithium ion battery according to claim 1 is characterized in that: the thickness of said plastic layer is 25～80um.
3. flexible packing lithium ion battery according to claim 1 is characterized in that: said metal layer thickness is 30～120um.
4. flexible packing lithium ion battery according to claim 1 is characterized in that: said plastic layer is polypropylene layer or polyethylene layer.
5. flexible packing lithium ion battery according to claim 1 is characterized in that: said metal level is aluminium lamination, aluminium alloy layer or stainless steel layer.
6. flexible packing lithium ion battery according to claim 1 is characterized in that: said metal level is connected through the heat fusion with plastic layer.
7. flexible packing lithium ion battery according to claim 1 is characterized in that: a surface of said metal level is provided with plastic layer.
8. flexible packing lithium ion battery according to claim 1 is characterized in that: said battery also comprises and is positioned at outermost gummed paper layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201040572U CN202585549U (en) | 2012-03-19 | 2012-03-19 | Flexible-packaged lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201040572U CN202585549U (en) | 2012-03-19 | 2012-03-19 | Flexible-packaged lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202585549U true CN202585549U (en) | 2012-12-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201040572U Expired - Lifetime CN202585549U (en) | 2012-03-19 | 2012-03-19 | Flexible-packaged lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202585549U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201415A (en) * | 2014-09-19 | 2014-12-10 | 东莞市德尔能新能源科技有限公司 | Polymer battery as well as encapsulating mold and encapsulating method thereof |
| CN105336883A (en) * | 2015-10-19 | 2016-02-17 | 宁德新能源科技有限公司 | Lithium ion battery flexible packaging material, and lithium ion battery prepared from lithium ion battery flexible packaging material |
-
2012
- 2012-03-19 CN CN2012201040572U patent/CN202585549U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201415A (en) * | 2014-09-19 | 2014-12-10 | 东莞市德尔能新能源科技有限公司 | Polymer battery as well as encapsulating mold and encapsulating method thereof |
| CN104201415B (en) * | 2014-09-19 | 2017-07-04 | 刘厚德 | A kind of polymer battery and its encapsulation mould and method for packing |
| CN105336883A (en) * | 2015-10-19 | 2016-02-17 | 宁德新能源科技有限公司 | Lithium ion battery flexible packaging material, and lithium ion battery prepared from lithium ion battery flexible packaging material |
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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 |
Granted publication date: 20121205 |
|
| CX01 | Expiry of patent term |