CN104900918A - Lithium ion battery preparation method - Google Patents
Lithium ion battery preparation method Download PDFInfo
- Publication number
- CN104900918A CN104900918A CN201510201356.6A CN201510201356A CN104900918A CN 104900918 A CN104900918 A CN 104900918A CN 201510201356 A CN201510201356 A CN 201510201356A CN 104900918 A CN104900918 A CN 104900918A
- Authority
- CN
- China
- Prior art keywords
- battery
- plastic film
- aluminum plastic
- lithium ion
- roll core
- 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.)
- Pending
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
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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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
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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
-
- 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
Abstract
The invention discloses a lithium ion battery preparation method, in the process of putting a battery roll core in an aluminum plastic film, the battery roll core and a gas bag trough are located on one side of the encapsulation double-up line in the aluminum plastic film, and the bottom of the battery roll core faces the gas bag trough. By changing the position of the battery roll core and the gas bag trough, a path between the gas bag trough and the battery roll core is smooth, and a electrolyte and a gas can smoothly flow in and out the battery core and in an electric core, the battery performance can be improved, and the manufacturing process is saved, so that the disability rate can be reduced, product quality can be improved, and manufacturing cost is saved.
Description
Technical field
The present invention relates to lithium ion battery preparing technical field, particularly a kind of preparation method of lithium ion battery.
Background technology
Existing encapsulation technology adopts air bag at main hole side, liquid injection port is positioned at battery cathode side, and during fluid injection, liquid injection port upwards, electrolyte is inner from the upper and lower two side inflow battery cores of inner core, and permeate gradually, this process path is long, and is kept off by closedtop limit and angle envelope steric hindrance, electrolyte needs the long period to enter core inside, cause electrolyte to remain in air bag, being easily extruded when sealing, causing electrolytic corrosion.
Battery carries out fixture baking and produces after changing into, on battery after folder, cylinder arm applies certain pressure to battery core, battery core is flattened, this process can enter air bag gas residual in battery core, electrolyte extruding, as previously mentioned, the path of electrolyte turnover air bag is not smooth, causes electrolyte, gas upwardly closedtop limit, battery closedtop limit is caused to pop, cause 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 is produced, are extracted out, because path is not smooth by battery, it is unclean that this phenomenon can cause electrolyte to arrange, and in battery, entrained electrolyte is more, even has gas, cause battery 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, needs to reduce core width, to lifting 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, a kind of preparation method of lithium ion battery is provided, change the position of battery roll core and air bag groove, make the free pathway between air bag groove and battery roll core, the gentle body of electrolyte can pass in and out in battery roll core and battery core glibly, and can improve battery performance and save manufacturing process, thus reduce scrappage, improve the quality of products and save manufacturing cost.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of preparation method of lithium ion battery, and battery roll core and air bag groove are arranged in aluminum plastic film the side encapsulating broken line, and the bottom faces of described battery roll core is facing to described air bag groove.
In technique scheme, in the trimming process step to described aluminum plastic film, only deburring is carried out to the aluminum plastic film edge that lug exposes.
In technique scheme, in the top side seal operation after aluminum plastic film described in doubling, fixture is from the side horizontal aluminum plastic film of pushing down described battery roll core and surface thereof of side toward side seal encapsulating broken line.
In technique scheme, in fluid injection operation, as liquid injection port upward, down, the bottom of liquid injecting clamp is provided with the space allowing lug pass to lug to described air bag groove.
In technique scheme, described space is arranged along the bottom of liquid injecting clamp, and the one end open of this space and liquid injecting clamp, make battery can pass in and out liquid injecting clamp from this opening.
In technique scheme, being spaced apart between lug thickness and battery roll core thickness of described space.
In technique scheme, in trimming operation, to the side of described aluminum plastic film, base and between its side and base the arm of angle of intersection cut.
In technique scheme, after described trimming operation, carry out flanging operation, first folding side, position, angle flattens, then rolls over base.
The invention has the beneficial effects as follows: by changing the relative position of air bag groove and battery roll core, make battery roll core and the air bag groove free pathway also namely between liquid injection port, electrolyte is easy to the inside just entering into battery roll core from the bottom of battery roll core, shorten the production time, and electrolyte can be avoided to remain in air bag groove, preventing battery core to be easily extruded when sealing, causing the problem of electrolytic corrosion to occur.Time battery core is extruded exhaust, gas is very successfully discharged from air bag groove, and will, toward the extruding of edge sealing place, can prevent gas from toward the extruding of edge sealing place, edge sealing is popped, and cause electrolyte to flow out, the problem that battery corrosion is polluted occurs, reduces the scrappage of battery.Because emission path is unimpeded, electrolyte unnecessary in battery core and gas are all drained only, and battery core surface will be more concordant, ensure good looking appearance.
Accompanying drawing explanation
Fig. 1 is the core strueture schematic diagram in prior art before fluid injection sealing;
Fig. 2 is that in prior art, the distribution of rushing hole and air bag groove of aluminum plastic film arranges schematic diagram;
Fig. 3 is the structure of liquid injecting clamp in prior art and the structural representation of battery core placement thereof.
In figure, 1 ', aluminum plastic film; 2 ', cheat; 5 ', closedtop limit; 6 ', side sealing; 7 ', position, angle envelope; 8 ', air bag groove; 9 ', liquid injection port; 10 ', liquid injecting clamp; 16 ', broken line is encapsulated; 18 ', battery core main body.
Fig. 4 is the structural representation of battery roll core;
Fig. 5 is that the distribution of aluminum plastic film punching hole and air bag groove in the present invention arranges schematic diagram;
Fig. 6 is the structure of liquid injecting clamp in the present invention and the structural representation of battery core placement thereof;
Fig. 7 is the plan structure schematic diagram of liquid injecting clamp in the present invention;
Core strueture schematic diagram when Fig. 8 is trimming in the present invention.
In figure, 1, aluminum plastic film; 2, cheat; 3, battery roll core; 4, lug; 5, closedtop limit; 6, side sealing; 8, air bag groove; 9, liquid injection port; 10, liquid injecting clamp; 11, space; 12, opening; 13, side; 14, base; 15, the arm of angle; 16, broken line is encapsulated; 17, base envelope; 18, battery core main body.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
As Fig. 1, 2, shown in 3, in prior art, first hole 2 ' is rushed to aluminum plastic film 1 ', battery roll core 3 and air bag groove 8 ' are arranged at the side of encapsulation broken line 16 ' in aluminum plastic film 1 ', then employing air bag groove 8 ' is arranged on the side that hole 2 ' is also battery core main body 18 ', liquid injection port 9 ' is positioned at battery cathode side, during fluid injection, battery core is positioned in liquid injecting clamp 10 ', liquid injection port upwards, electrolyte from the lug end of battery roll core 3 and bottom two side inflow battery roll core 3 inner, and permeate gradually, this process path is long, and stopped by closedtop limit 5 ' and envelope position 7 ', angle, it is inner that electrolyte needs the long period to enter battery roll core 3, electrolyte is caused to remain in air bag groove 8 ', easily be extruded when sealing, cause electrolytic corrosion.Generally speaking, the shortcoming of prior art is that the path of electrolyte and gas turnover battery roll core 3 is not smooth, causes having occurred electrolytic corrosion, battery is scrapped, affect battery outward appearance and limit the problems such as battery performance.
As shown in Fig. 4,5,6,7,8, a kind of preparation method of lithium ion battery provided by the invention, first hole 2 is rushed to aluminum plastic film 1, then battery roll core 3 is positioned in the operation in aluminum plastic film 1, battery roll core 3 and air bag groove 8 are set to be positioned at the side that aluminum plastic film 1 encapsulates broken line 16, and the bottom faces of described battery roll core 3 is facing to described air bag groove 8.Battery roll core 3 forms battery core after being wrapped up by aluminum plastic film 1, and battery roll core 3 part is battery core main body 18.
Wherein, in the trimming process step to described aluminum plastic film 1, only deburring is carried out to aluminum plastic film 1 edge that lug 4 exposes.In general trimming process step, will carry out deburring to the top margin at lug 4 place with relative base 14, during to ensure closedtop, align in top margin and base 14, once after closedtop, due to the existence of lug 4, deburring just can not be carried out in its top margin and base 14.In the present invention, because base 14 is air bag groove 8, can encapsulate and trimming the aluminum plastic film 1 between air bag groove 8 and battery roll core 3 after fluid injection completes, so in this trimming process step, only need to carry out deburring to top margin, decrease process flow, the effect of saving manufacturing time and manufacturing cost can be reached.
Wherein, in top side seal operation after aluminum plastic film described in doubling 1, carry out closedtop limit 5, side sealing 6, base envelope 17 to the aluminum plastic film 1 of battery core, fixture is from the side horizontal aluminum plastic film 1 of pushing down described battery roll core 3 and surface thereof of side toward side seal encapsulating broken line 16.Keep air bag groove 8 opening 12 as liquid injection port 9.Fixture laterally pushes down the aluminum plastic film 1 on battery roll core 3 surface, makes aluminum plastic film 1 produce displacement, makes can keeping along encapsulation broken line 16 doubling and can not producing skew of aluminum plastic film 1, avoids edge not line up.
Wherein, in fluid injection operation, as liquid injection port 9 upward, down, the bottom of liquid injecting clamp 10 is provided with the space 11 allowing lug 4 pass to lug 4 to described air bag groove 8.This space 11 is arranged along the bottom of liquid injecting clamp 10, and the one end open 12 of this space 11 and liquid injecting clamp 10, make battery can pass in and out liquid injecting clamp 10 from this opening 12.Because the position of battery roll core 3 and air bag groove 8 changed than in the past, so also need to make corresponding change to the structure of its liquid injecting clamp 10, air bag groove 8 as liquid injection port 9 its must be upward, battery pole ear 4 like this will be down, if liquid injecting clamp 10 in the past, the through hole not allowing lug 4 pass bottom it, can make lug 4 bending bad.In the present invention, lug 4 is placed in space 11, and can not produce bending and make it bad.
Wherein, being spaced apart between lug 4 thickness and battery roll core 3 thickness of described space 11.Lug 4 thickness is 0.43-1.47mm, and the thickness after battery roll core 3 wraps up aluminum plastic film 1 is for being greater than 2.5mm, and the distance in space 11 can be 1.0-1.5mm, ensures that lug 4 can be placed in space 11, support can live battery core and prevent battery core from falling again.
Wherein, in trimming operation, to the side 13 of described aluminum plastic film 1, base 14 and between its side 13 and base 14 arm of angle 15 of intersection cut.When cutting base 14, air bag groove 8 is excised.The position that base 14 cuts is the aluminum plastic film 1 between air bag groove 8 and battery roll core 3.After position, angle 15 cuts, can make when opposite side 13 and base 14 carry out flanging operation, side 13 and base 14 can not be overlapping, ensure the effect of flanging.
Wherein, after described trimming operation, carry out flanging operation, first folding side 13, position, angle flattens, then rolls over base 14.Or first roll over base 14, position, angle flattens, then folding side 13.
Above embodiment is merely illustrative and not limiting to the invention, therefore all equivalences done according to the method described in patent claim of the present invention change or modify, and are included in patent claim of the present invention.
Claims (8)
1. a preparation method of lithium ion battery, it is characterized in that: battery roll core being positioned in the operation in aluminum plastic film, described battery roll core and air bag slot encapsulate the side of broken line in aluminum plastic film, and the bottom faces of described battery roll core is facing to described air bag groove.
2. a kind of preparation method of lithium ion battery according to claim 1, is characterized in that: in the trimming process step to described aluminum plastic film, only carries out deburring to the aluminum plastic film edge that lug exposes.
3. a kind of preparation method of lithium ion battery according to claim 1, it is characterized in that: in the top side seal operation after aluminum plastic film described in doubling, fixture is from the side horizontal aluminum plastic film of pushing down described battery roll core and surface thereof of side toward side seal encapsulating broken line.
4. a kind of preparation method of lithium ion battery according to claim 1, is characterized in that: in fluid injection operation, and as liquid injection port upward, down, the bottom of liquid injecting clamp is provided with the space allowing lug pass to lug to described air bag groove.
5. a kind of preparation method of lithium ion battery according to claim 4, is characterized in that: described space is arranged along the bottom of liquid injecting clamp, and the one end open of this space and liquid injecting clamp, make battery can pass in and out liquid injecting clamp from this opening.
6. a kind of preparation method of lithium ion battery according to claim 5, is characterized in that: being spaced apart between lug thickness and battery roll core thickness of described space.
7. a kind of preparation method of lithium ion battery according to claim 1, is characterized in that: in trimming operation, to the side of described aluminum plastic film, base and between its side and base the arm of angle of intersection cut.
8. a kind of preparation method of lithium ion battery according to claim 7, is characterized in that: after described trimming operation, carry out flanging operation, first folding side, and position, angle flattens, then rolls over base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201356.6A CN104900918A (en) | 2015-04-27 | 2015-04-27 | Lithium ion battery preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201356.6A CN104900918A (en) | 2015-04-27 | 2015-04-27 | Lithium ion battery preparation method |
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| Publication Number | Publication Date |
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| CN104900918A true CN104900918A (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510201356.6A Pending CN104900918A (en) | 2015-04-27 | 2015-04-27 | Lithium ion battery preparation method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702885A (en) * | 2016-04-06 | 2016-06-22 | 东莞市安德丰电池有限公司 | Packaging structure of lithium ion battery, and packaging method and formation method for packaging structure |
| CN107706457A (en) * | 2017-05-09 | 2018-02-16 | 南京国轩电池有限公司 | A kind of formation of Li-ion batteries fixture |
| WO2019196073A1 (en) * | 2018-04-12 | 2019-10-17 | 宁德新能源科技有限公司 | Battery |
| CN110690406A (en) * | 2019-10-23 | 2020-01-14 | 东莞维科电池有限公司 | Packaging liquid injection method for improving pole piece infiltration and side edge deformation of soft package winding battery |
| CN112729456A (en) * | 2020-12-16 | 2021-04-30 | 湖北亿纬动力有限公司 | Design method of soft-package battery cell air bag |
| 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 |
| CN113910354A (en) * | 2021-09-22 | 2022-01-11 | 曙鹏科技（深圳）有限公司 | Cutting method and cutting equipment for aluminum-plastic foil, battery and manufacturing method of battery |
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| CN202205818U (en) * | 2011-07-28 | 2012-04-25 | 东莞市金源电池科技有限公司 | Novel air bag structure for liquid-state flexible package lithium ion battery |
| CN202423483U (en) * | 2011-12-08 | 2012-09-05 | 深圳市格瑞普电池有限公司 | Flexibly packaged lithium ion battery |
| CN202585641U (en) * | 2012-03-19 | 2012-12-05 | 宁德新能源科技有限公司 | Flexible packaged lithium battery |
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2015
- 2015-04-27 CN CN201510201356.6A patent/CN104900918A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202205818U (en) * | 2011-07-28 | 2012-04-25 | 东莞市金源电池科技有限公司 | Novel air bag structure for liquid-state flexible package lithium ion battery |
| CN202423483U (en) * | 2011-12-08 | 2012-09-05 | 深圳市格瑞普电池有限公司 | Flexibly packaged lithium ion battery |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702885A (en) * | 2016-04-06 | 2016-06-22 | 东莞市安德丰电池有限公司 | Packaging structure of lithium ion battery, and packaging method and formation method for packaging structure |
| CN105702885B (en) * | 2016-04-06 | 2018-04-17 | 东莞市安德丰电池有限公司 | Encapsulating structure and its method for packing, the chemical synthesizing method of a kind of lithium ion battery |
| CN107706457A (en) * | 2017-05-09 | 2018-02-16 | 南京国轩电池有限公司 | A kind of formation of Li-ion batteries fixture |
| WO2019196073A1 (en) * | 2018-04-12 | 2019-10-17 | 宁德新能源科技有限公司 | Battery |
| CN110690406A (en) * | 2019-10-23 | 2020-01-14 | 东莞维科电池有限公司 | Packaging liquid injection method for improving pole piece infiltration and side edge deformation of soft package winding battery |
| 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 |
| CN112729456A (en) * | 2020-12-16 | 2021-04-30 | 湖北亿纬动力有限公司 | Design method of soft-package battery cell air bag |
| CN113910354A (en) * | 2021-09-22 | 2022-01-11 | 曙鹏科技（深圳）有限公司 | Cutting method and cutting equipment for aluminum-plastic foil, battery and manufacturing method of battery |
| CN113910354B (en) * | 2021-09-22 | 2023-03-21 | 曙鹏科技（深圳）有限公司 | Cutting method and cutting equipment for aluminum-plastic foil, battery and manufacturing method of battery |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20150909 |