CN105702885A - Packaging structure of lithium ion battery, and packaging method and formation method for packaging structure - Google Patents
Packaging structure of lithium ion battery, and packaging method and formation method for packaging structure Download PDFInfo
- Publication number
- CN105702885A CN105702885A CN201610206113.6A CN201610206113A CN105702885A CN 105702885 A CN105702885 A CN 105702885A CN 201610206113 A CN201610206113 A CN 201610206113A CN 105702885 A CN105702885 A CN 105702885A
- Authority
- CN
- China
- Prior art keywords
- plastic film
- aluminum plastic
- lithium ion
- ion battery
- air bag
- 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.)
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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 of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
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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
- 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
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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
Abstract
The invention discloses a packaging structure of a lithium ion battery. The packaging structure comprises an aluminum plastic film, wherein air bags and cell placement grooves are arranged on the aluminum plastic film; the cell placement grooves and the air bags are symmetrically arranged along the perpendicular line of the centre-broken-line of the aluminum plastic film from the centre-broken-line to the two ends of the aluminum plastic film in sequence; an avoidance nick for accommodating tabs is formed in the aluminum plastic film between the cell placement grooves and the air bags. According to the packaging method and formation method for the packaging structure, the preparation quality of the battery can be effectively improved, the materials can be saved, and the rejection rate can be lowered.
Description
Technical field
The present invention relates to lithium ion battery preparing technical field, particularly the encapsulating structure of a kind of lithium ion battery and method for packing, chemical synthesizing method。
Background technology
As it is shown in figure 1, existing encapsulation technology adopts air bag at main hole (battery core placing trough) side, liquid injection port is positioned at battery cathode side, during fluid injection, upwards, electrolyte is inside the internal upper and lower two side inflow battery cores of core, and permeates gradually for liquid injection port, this process path is long, and kept off by closedtop limit and angle envelope steric hindrance, electrolyte needs the long period to enter inside core, causes electrolyte to remain in air bag, easily it is extruded when sealing, causes electrolytic corrosion。
Battery carries out fixture baking after chemical conversion and produces, on battery after folder, battery core is applied certain pressure by cylinder arm, battery core is flattened, this process can enter air bag the gas of residual, electrolyte extruding in battery core, as it was previously stated, the path of electrolyte turnover air bag is not smooth, cause electrolyte, gas upwardly closedtop limit, battery closedtop limit is caused to pop, causing electrolyte to flow out, battery corrosion pollutes, and the serious battery that causes is scrapped。
Electrolyte unnecessary in battery, gas, when vacuum-pumping and sealing produces, are extracted out, owing to path is not smooth by battery, this phenomenon can cause electrolyte row unclean, and in battery, entrained electrolyte is more, even has gas, battery is caused to feel like jelly, surface irregularity, affect battery outward appearance。
By existing packaged type, both sides edge sealing, flanging easily rebounds and opens, and causes battery ultra-wide, in order to meet customer need, it is necessary to reduce core width, to promoting energy density build-up of pressure。
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, it is provided that the encapsulating structure of a kind of lithium ion battery, and method for packing on this encapsulating structure basis and chemical synthesizing method。
For solving above-mentioned technical problem, the technical solution used in the present invention is: the encapsulating structure of a kind of lithium ion battery, including aluminum plastic film, aluminum plastic film is provided with air bag and battery core placing trough, vertical line along described aluminum plastic film broken line is symmetrically arranged with described battery core placing trough, air bag successively from the two ends of doubling alignment aluminum plastic film, and the described aluminum plastic film between described battery core placing trough and air bag is provided with the empty avoiding breach of accommodating lug。
The method for packing of the encapsulating structure of a kind of lithium ion battery, first along the broken line doubling of described aluminum plastic film, then passes through side seal the right and left edge sealing by battery core placing trough, air bag, by U-shaped closedtop along described empty avoiding breach edge sealing。
In technique scheme, the battery core placing trough side between U-shaped closedtop and side seal is carried out secondary edge sealing。
The chemical synthesizing method of the encapsulating structure of a kind of lithium ion battery, is broken line along described empty avoiding breach, is turned up by cell parts more than broken line, makes lug expose the both positive and negative polarity contact jaw with formation cabinet clip and is electrically connected。
In technique scheme, described formation cabinet clip includes being positioned at the described both positive and negative polarity contact jaw of bottom and being positioned at the sloping platform on this both positive and negative polarity contact jaw, and this sloping platform is for being relied on by the described cell parts turned up。
The invention has the beneficial effects as follows: by changing the position of air bag, air bag is arranged at the head of battery, the path making electrolyte turnover air bag is more smooth and easy, readily permeable during fluid injection, can more unnecessary entrained electrolyte and gas be discharged when aerofluxus and vacuum-pumping and sealing。And so design can be effectively saved the use of aluminum plastic film material, save material cost；Be conducive to the protection of positive and negative lug metal tape, make lug not easily be broken in the centre position of aluminum plastic film；After fluid injection operation completes, battery can vertically be placed, and air bag upwards, is conducive to the absorption to electrolyte of the battery core positive/negative plate；The battery core effect here of below 3.5mm thickness is very significantly improved；During two envelopes, for unnecessary electrolyte, utilize evacuation promptly unnecessary electrolyte can be detached air bag, solve the phenomenon of feeling like jelly of existing technique battery；The length of two envelope edge sealing reduces, and air bag increases from the distance of battery main body battery core, can reduce the probability of electrolytic corrosion battery during two envelopes。
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing encapsulating structure；
Fig. 2 is the schematic diagram of encapsulating structure of the present invention；
Fig. 3 is the schematic diagram of edge sealing structure of the present invention；
Fig. 4 is the schematic diagram that the present invention is melted into state。
In figure, 1, aluminum plastic film；2, air bag；3, battery core placing trough；4, battery core；5, empty avoiding breach；6, lug；7, sloping platform；8, both positive and negative polarity contact jaw；A, side seal；B, U-shaped closedtop；C, secondary edge sealing。
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further detailed explanation。
As shown in Figure 2,3, a kind of encapsulating structure of lithium ion battery, including aluminum plastic film, aluminum plastic film is provided with air bag and battery core placing trough, vertical line along described aluminum plastic film broken line is symmetrically arranged with described battery core placing trough, air bag successively from the two ends of doubling alignment aluminum plastic film, and the described aluminum plastic film between described battery core placing trough and air bag is provided with the empty avoiding breach of accommodating lug。Concrete, for the battery core of same size, originally aluminum plastic film is of a size of long 168mm width 107mm, and the aluminum plastic film applying the present invention is of a size of long 240mm width 73mm, less than the area occupied of original aluminum plastic film material, reaches to save the effect of material cost。Fluid injection is inserted material box and is carried out turnover subsequent processing after completing, be placed in the soft-package battery in material box, and battery core is in the state attentioned, and upward, air bag is upward in lug end；The originally soft-package battery of encapsulating structure, in order to ensure that air bag is upwards, it is necessary to make battery core side place, makes lug end towards left side or right-justification, so there will be lug and situation that lug metal tape is broken, causes lug to rupture, and battery core is scrapped。
As shown in Figure 3, method for packing based on the encapsulating structure of above-mentioned lithium ion battery, first along the broken line doubling of described aluminum plastic film, then pass through side seal the right and left edge sealing by battery core placing trough, air bag, by U-shaped closedtop along described empty avoiding breach edge sealing, finally the battery core placing trough side between U-shaped closedtop and side seal is carried out secondary edge sealing。The length of secondary edge sealing reduces, and air bag increases from the distance of battery main body battery core, can reduce the probability of electrolytic corrosion battery during two envelopes。For the battery of 3.5 thickness, the size in the Nei Weifeng district of original encapsulating structure battery core is difficult to control, and Wei Feng district is bigger than normal or after cutting edge, effectively seal is less than normal, and the service life of battery core and safety all can reduce。Nei Weifeng district is the position that battery core main body is had a common boundary with two envelopes。
As shown in Figure 4, based on the chemical synthesizing method of the encapsulating structure of above-mentioned lithium ion battery, it is broken line along described empty avoiding breach, cell parts more than broken line is turned up, make lug expose the both positive and negative polarity contact jaw with formation cabinet clip and be electrically connected。Wherein, described formation cabinet clip includes being positioned at the described both positive and negative polarity contact jaw of bottom and being positioned at the sloping platform on this both positive and negative polarity contact jaw, and this sloping platform is for being relied on by the described cell parts turned up。
Above embodiments is merely illustrative and not limiting to the invention, therefore all equivalences done according to the method described in present patent application scope change or modify, and are all included within the scope of present patent application。
Claims (5)
1. the encapsulating structure of a lithium ion battery, including aluminum plastic film, aluminum plastic film is provided with air bag and battery core placing trough, it is characterized in that: the vertical line along described aluminum plastic film broken line is symmetrically arranged with described battery core placing trough, air bag successively from the two ends of doubling alignment aluminum plastic film, and the described aluminum plastic film between described battery core placing trough and air bag is provided with the empty avoiding breach of accommodating lug。
2. the method for packing of the encapsulating structure of a kind of lithium ion battery according to claim 1, it is characterized in that: first along the broken line doubling of described aluminum plastic film, then pass through side seal the right and left edge sealing by battery core placing trough, air bag, by U-shaped closedtop along described empty avoiding breach edge sealing。
3. the method for packing of the encapsulating structure of a kind of lithium ion battery according to claim 2, it is characterised in that: the battery core placing trough side between U-shaped closedtop and side seal is carried out secondary edge sealing。
4. the chemical synthesizing method of the encapsulating structure of a kind of lithium ion battery according to claim 1 or 2 or 3, it is characterized in that: be broken line along described empty avoiding breach, cell parts more than broken line is turned up, makes lug expose the both positive and negative polarity contact jaw with formation cabinet clip and be electrically connected。
5. the chemical synthesizing method of the encapsulating structure of a kind of lithium ion battery according to claim 4, it is characterized in that: described formation cabinet clip includes being positioned at the described both positive and negative polarity contact jaw of bottom and being positioned at the sloping platform on this both positive and negative polarity contact jaw, and this sloping platform is for being relied on by the described cell parts turned up。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610206113.6A CN105702885B (en) | 2016-04-06 | 2016-04-06 | Encapsulating structure and its method for packing, the chemical synthesizing method of a kind of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610206113.6A CN105702885B (en) | 2016-04-06 | 2016-04-06 | Encapsulating structure and its method for packing, the chemical synthesizing method of a kind of lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105702885A true CN105702885A (en) | 2016-06-22 |
| CN105702885B CN105702885B (en) | 2018-04-17 |
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| CN201610206113.6A Active CN105702885B (en) | 2016-04-06 | 2016-04-06 | Encapsulating structure and its method for packing, the chemical synthesizing method of a kind of lithium ion battery |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198123A (en) * | 2016-08-12 | 2016-12-07 | 合肥国轩高科动力能源有限公司 | A kind of gas collection method analyzed for gas generated in lithium ion battery |
| CN110970666A (en) * | 2019-12-18 | 2020-04-07 | 多氟多新能源科技有限公司 | Secondary sealing degassing method for soft package lithium ion battery |
| CN111326681A (en) * | 2018-12-14 | 2020-06-23 | 微宏动力系统（湖州）有限公司 | Soft package battery core and battery system |
| WO2021109315A1 (en) * | 2019-12-06 | 2021-06-10 | 新余赣锋电子有限公司 | Butterfly bean button-type soft package battery cell |
| CN113937337A (en) * | 2021-10-14 | 2022-01-14 | 湖南兴旭能新能源科技有限公司 | Aluminum-plastic film packaging structure and soft package lithium ion battery comprising same |
| CN116505109A (en) * | 2023-06-08 | 2023-07-28 | 江苏正力新能电池技术有限公司 | Formation method of square battery |
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| JPH1186807A (en) * | 1997-09-16 | 1999-03-30 | Sumitomo Electric Ind Ltd | Nonaqueous electrolyte battery |
| CN201022081Y (en) * | 2006-12-06 | 2008-02-13 | 广州丰江电池新技术有限公司 | Soft packing lithium secondary battery with secure air chamber |
| CN104900918A (en) * | 2015-04-27 | 2015-09-09 | 东莞市安德丰电池有限公司 | Lithium ion battery preparation method |
| CN205488249U (en) * | 2016-04-06 | 2016-08-17 | 东莞市安德丰电池有限公司 | Packaging structure of lithium ion attery |
-
2016
- 2016-04-06 CN CN201610206113.6A patent/CN105702885B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1186807A (en) * | 1997-09-16 | 1999-03-30 | Sumitomo Electric Ind Ltd | Nonaqueous electrolyte battery |
| CN201022081Y (en) * | 2006-12-06 | 2008-02-13 | 广州丰江电池新技术有限公司 | Soft packing lithium secondary battery with secure air chamber |
| CN104900918A (en) * | 2015-04-27 | 2015-09-09 | 东莞市安德丰电池有限公司 | Lithium ion battery preparation method |
| CN205488249U (en) * | 2016-04-06 | 2016-08-17 | 东莞市安德丰电池有限公司 | Packaging structure of lithium ion attery |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198123A (en) * | 2016-08-12 | 2016-12-07 | 合肥国轩高科动力能源有限公司 | A kind of gas collection method analyzed for gas generated in lithium ion battery |
| CN106198123B (en) * | 2016-08-12 | 2020-04-17 | 合肥国轩高科动力能源有限公司 | Gas collection method for analysis of gas produced in lithium ion battery |
| CN111326681A (en) * | 2018-12-14 | 2020-06-23 | 微宏动力系统（湖州）有限公司 | Soft package battery core and battery system |
| CN111326681B (en) * | 2018-12-14 | 2024-04-23 | 微宏公司 | Soft packet of electric core and battery system |
| WO2021109315A1 (en) * | 2019-12-06 | 2021-06-10 | 新余赣锋电子有限公司 | Butterfly bean button-type soft package battery cell |
| CN110970666A (en) * | 2019-12-18 | 2020-04-07 | 多氟多新能源科技有限公司 | Secondary sealing degassing method for soft package lithium ion battery |
| CN113937337A (en) * | 2021-10-14 | 2022-01-14 | 湖南兴旭能新能源科技有限公司 | Aluminum-plastic film packaging structure and soft package lithium ion battery comprising same |
| CN113937337B (en) * | 2021-10-14 | 2022-11-25 | 湖南兴旭能新能源科技有限公司 | Aluminum-plastic film packaging structure and soft package lithium ion battery comprising same |
| CN116505109A (en) * | 2023-06-08 | 2023-07-28 | 江苏正力新能电池技术有限公司 | Formation method of square battery |
| CN116505109B (en) * | 2023-06-08 | 2023-08-25 | 江苏正力新能电池技术有限公司 | Formation method of square battery |
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|---|---|
| CN105702885B (en) | 2018-04-17 |
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