CN109301149A - A kind of packaging method of lithium ion cell polar ear and lithium ion battery - Google Patents
A kind of packaging method of lithium ion cell polar ear and lithium ion battery Download PDFInfo
- Publication number
- CN109301149A CN109301149A CN201811167215.7A CN201811167215A CN109301149A CN 109301149 A CN109301149 A CN 109301149A CN 201811167215 A CN201811167215 A CN 201811167215A CN 109301149 A CN109301149 A CN 109301149A
- Authority
- CN
- China
- Prior art keywords
- gel
- battery core
- lug
- ear
- lithium ion
- 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.)
- Granted
Links
Classifications
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The present invention discloses a kind of lithium ion cell polar ear, the switching anode ear including being set on lithium ion battery and switching negative electrode lug, is equipped with gel on switching anode ear and switching negative electrode lug, gel is equipped with positioning device to position when being used for aluminum plastic film doubling.Transfer electrode lug of the invention, there are two locating convex block or lugs for gel tool.Convex block or lug are located on the two sides of transfer electrode lug, pass through the convex block or lug on transfer electrode lug wherein one side, the position that naked battery core enters shell can be accurately positioned, the degree of registration after aluminum plastic film fold can be then accurately controlled by the convex block or lug of transfer electrode lug another side, on the one hand naked battery core can be prevented when encapsulation, which to enter shell position inaccuracy, causes gel after encapsulation exposed bad, the exposed consistency of tab is improved, the precision of assembling positioning when battery core is assembled into battery pack is improved；On the other hand it also can reduce and even be eliminated the dislocation of closedtop side, improve the consistency of battery core length.The present invention is applied to battery technology field.
Description
Technical field
The present invention relates to battery technology fields, and in particular to the encapsulation side of a kind of lithium ion cell polar ear and lithium ion battery
Method.
Background technique
With the fast development of current science and technology, electronics and IT products are in people's daily life in occupation of more and more important
Position.Lithium ion battery is because its energy density is high, have extended cycle life, operating voltage height etc. becomes indispensable chemical-electrical
Source.And compared with steel shell, lithium ion battery with aluminum shell, soft bag lithium ionic cell because its is light-weight, have a safety feature, shape not by
Limit, the advantages that design protection is simple rapid growth.
Currently, commercial lithium-ion batteries are to be sealed by aluminum plastic film as shell, positive and negative anodes tab passes through tab
Glue is bonded with the PP layer hot melt in aluminum plastic film, to reach sealing function.In order to guarantee sealing effect, prevent from corroding, pole
The smallest exposed size of ear glue generally requires as 0.2mm；Be assembled into battery pack simultaneously in order to not influence battery core, gel it is exposed
Size also needs one maximum value of setting.But in the actual production process, because process fluctuation and gel size fluctuation, can generate
The undesirable substandard products of the exposed size of gel.Due to safety concerns, general producer can scrap this battery core, and this method can be significantly
Increase production cost.Therefore, it is necessary to propose a kind of new extreme ear structure and its packaging method, production excellence rate is improved, reduces life
Produce cost.
Summary of the invention
The main object of the present invention is to provide the packaging method of a kind of lithium ion cell polar ear and lithium ion battery, Neng Gougai
It is apt to phenomena such as gel is exposed bad.
To achieve the above object, the invention proposes a kind of lithium ion cell polar ears, including being set on lithium ion battery
It transfers anode ear and switching negative electrode lug, gel is equipped on the switching anode ear and negative electrode lug of transferring, in the gel
Equipped with positioning device to be positioned when being used for aluminum plastic film doubling.
Further improved, the positioning device is convex block, and gel is equipped with two convex blocks, and two convex blocks are respectively provided at switching
The opposite two sides of anode ear or the opposite two sides of negative electrode lug of transferring, the bottom surface of two convex blocks is in same level.
Further improved, the height of the convex block is no more than the half of finished product battery core thickness, and the convex block is contained in pole
Within ear glue glue surface.
Further improved, the positioning device is the lug that excision is needed after encapsulating, and it is convex to be equipped with two vertically in gel
Piece, two lugs are respectively provided at the both side ends of the both side ends of switching anode ear or negative electrode lug of transferring, each lug and tab glue connection
The lower end at place is connect in same level.
Further improved, the lug and switching anode ear face or switching negative electrode lug face form angle.
Further improved, the lug is obliquely installed or tilts down upwards setting.
Further improved, the corner of the positive the ear portion of transferring and the corner of switching cathode the ear portion are fillet.
The invention also provides a kind of packaging methods of lithium ion battery, and the technical scheme adopted is as follows:
A kind of packaging method of the lithium ion battery with above-mentioned tab, comprising the following steps:
S1: the preparation of naked battery core, by after cross cutting monopole ear positive plate, diaphragm, the monopole ear negative electrode tab after cross cutting according to
Lamination process is prepared into the naked battery core of multi pole ears, or by the multi pole ears positive plate after cross cutting, diaphragm, the multi pole ears negative electrode tab after cross cutting
The naked battery core of multi pole ears is prepared into according to the technique of winding；
S2: the anode ear of naked battery core and the negative electrode lug of naked battery core is made using electric resistance welding or ultrasonic bond or laser in step S1
Weldering carries out prewelding, makes multiple pole piece parallels of naked battery core, and improves the welding effect of switching anode ear and negative electrode lug of transferring.
S3: will be with gel and gel is equipped with the switching anode ear of positioning device and is welded on naked electricity by Laser Welding
It, will be with gel and gel is equipped with the switching cathode of positioning device on the anode ear of core or positive plate without included tab
Ear is welded on the negative electrode lug of naked battery core or negative electrode tab without included tab by Laser Welding；
Negative electrode tab without the positive plate for carrying tab and without included tab is after tab welding, by manual coiling or certainly
It is dynamic to be wound into naked battery core；
S4: the aluminum plastic film for having rushed hole is put into closedtop slot position fixture, then naked battery core made from step S3 is put by encapsulation
Enter in the interior hole of aluminum plastic film, and is balanced edge on the closedtop side of aluminum plastic film according to the positioning of positioning device；Then by aluminum plastic film pair
Folding, it is desirable that another closedtop after doubling while it is upper along with balance after closedtop while on along being aligned, finally according to the encapsulation parameter of setting
Encapsulation；
S5: the preparation of finished product battery core, by step S4 processing after naked battery core successively carry out fluid injection, infiltration, chemical conversion, two envelopes,
Finished product battery core is made in the processes such as partial volume.
Further improved, in step S4, the positioning device is convex block, by will be on the closedtop side of non-doubling aluminum plastic film
Along the bottom surface for heading on two convex blocks simultaneously, edge on another closedtop side after doubling is also headed on into two convex blocks simultaneously after aluminum plastic film doubling
Bottom surface.
Further improved, in step S4, the positioning device is lug, by will be on the closedtop side of non-doubling aluminum plastic film
It is after aluminum plastic film doubling that edge on another closedtop side after doubling is also same along the lower end for heading on two lugs Yu gel junction simultaneously
When head on the lower ends of two lugs Yu gel junction；After battery core is completed in encapsulation, with small-sized guillotine by lug along itself and pole
Ear glue intersection is cut.
Compared with prior art, technical solution of the present invention the utility model has the advantages that
1, the present invention is by the positioning device that is arranged in gel, can to before aluminum plastic film doubling closedtop side and doubling after
The positioning of another closedtop side, the degree of registration after aluminum plastic film fold can be accurately controlled, naked battery core when on the one hand can prevent encapsulation
Entering shell position inaccuracy causes gel after encapsulation exposed bad, improves the exposed consistency of tab, improves battery core and is assembled into electricity
The precision of assembling positioning when pond is wrapped；On the other hand it also can reduce and even be eliminated the dislocation of closedtop side, improve the one of battery core length
Cause property.
2, the invention discloses two kinds of positioning devices, one kind is convex block, and one kind is lug；It is thick that bump height is no more than battery core
The half of degree, lug can be cut after packaging, therefore do not influenced battery core and be assembled into battery pack.
3, the present invention can be effectively prevented gel it is exposed be zero caused by corrosion risk, improve product safety and can
By property, production excellence rate is improved, ratio is scrapped in reduction.
4, the corner for the transfer electrode lug root that the present invention uses is fillet, when can prevent ultrasonic bonding, before switching
Tab, which is pierced, even to crack, and generates internal resistance even capacity bad product, improves battery core quality.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is transfer electrode lug, convex block, tab glue connection main view；
Fig. 2 is transfer electrode lug, convex block, tab glue connection left view or right view；
Fig. 3 is transfer electrode lug, lug, tab glue connection perspective view；
Fig. 4 is transfer electrode lug, lug, tab glue connection top view；
Fig. 5 is schematic diagram when naked battery core is put into the non-doubling of aluminum plastic film in interior hole；
Fig. 6 is that naked battery core is put into interior hole schematic diagram after aluminum plastic film doubling；
Fig. 7 is the transfer electrode lug main view for being not provided with positioning device；
Fig. 8 is the transfer electrode lug left view or right view for being not provided with positioning device.
In above-mentioned attached drawing, 1 transfer electrode lug, 11 be transfer electrode lug root, and 2 be gel, and 3 be convex block, and 4 be lug, and 5 be to turn
Preceding tab is connect, 6 be naked battery core, and 7 be aluminum plastic film, and 71 be closedtop side.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and should not be understood as
Its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In the description of the present invention, " multiple " contain
Justice be it is at least two, such as three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. shall be understood in a broad sense,
For example, " fixation " may be a fixed connection, it may be a detachable connection, or integral；It can be mechanical connection, be also possible to
Electrical connection；It can be directly connected, the connection inside two elements or two can also be can be indirectly connected through an intermediary
The interaction relationship of a element, unless otherwise restricted clearly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
It in addition, the technical solution between each embodiment of the present invention can be combined with each other, but must be general with this field
Based on logical technical staff can be realized, it will be understood that when the combination of technical solution appearance is conflicting or cannot achieve this
The combination of technical solution is not present, also not the present invention claims protection scope within.
Embodiment 1
In the present embodiment, switching anode ear and switching negative electrode lug are referred to as transfer electrode lug 1.
Referring to figs. 1 to Fig. 8, a kind of lithium ion cell polar ear including the switching anode ear being set on lithium ion battery and turns
Negative electrode lug is connect, gel 2 is equipped on switching anode ear and switching negative electrode lug, gel 2 is equipped with positioning device to be used for aluminium
It is positioned when 7 doubling of plastic film.
Positioning device can be convex block 3, and gel 2 is equipped with two convex blocks 3, and two convex blocks 3 are respectively provided at switching anode ear phase
Pair two sides or the opposite two sides of switching negative electrode lug, the bottom surface of two convex blocks 3 is in same level.The height of convex block 3 is not
More than the half of finished product battery core thickness, convex block 3 is contained within 2 glue surface of gel.
Positioning device can also be the lug 4 that excision is needed after encapsulation, be equipped with two lugs 4, two lugs vertically in gel 2
4 are respectively provided at the both side ends of the both side ends of switching anode ear or negative electrode lug of transferring, each lug 4 and 2 junction of gel
Lower end is in same level.The width direction and gel 2 of the lug 4 are noncontinuity bonding, lug 4 and switching anode
Ear face or switching negative electrode lug face form angle, it is therefore an objective to cut after facilitating encapsulation, the material one of convex block 3 and lug 4 and gel 2
It causes.Lug 4 is obliquely installed or tilts down upwards setting.Preferably, lug 4 is rectangular, and 4 thickness of lug and gel 2
Thickness is equal.Positive the ear portion of transferring and switching cathode the ear portion are referred to as transfer electrode lug root 11, positive the ear portion of transferring
Corner and the corner of switching cathode the ear portion are fillet, in order to and tab 5 punctures before preventing sharp right angle from will transfer,
Pole piece is caused to be broken.Preferably, the convex block 3 or lug 4 are located at the upper left corner of the left shoulder of gel 2 and the upper right of right shoulder
Angle, and 3 top of convex block or 4 top of lug are flushed with gel 2.
The present embodiment also discloses a kind of packaging method of lithium ion battery, and the technical scheme adopted is as follows:
A kind of packaging method of the tab of the lithium ion battery with above-mentioned tab, comprising the following steps:
It is further comprising the steps of before step S1:
S01: the preparation of slurry weighs nickle cobalt lithium manganate, SP, KS-6 and PVDF, mass percent is followed successively by 94.5%,
2.0%, 1.5% and 2.0%, solvent NMP.Above-mentioned material is stirred in double planetary de-airing mixer, is made
Even stable anode sizing agent.In above-mentioned material, SP is the abbreviation of conductive black, and KS-6 is the abbreviation of electrically conductive graphite, and PVDF is poly-
The abbreviation of vinylidene fluoride, NMP are the abbreviations of N-Methyl pyrrolidone.Weigh graphite, conductive agent, CMC and SBR, quality percentage
Than being followed successively by 95%, 1.5%, 1.2% and 2.3%, solvent is deionized water.By above-mentioned material in double planetary de-airing mixer
Material is stirred, and uniform and stable negative electrode slurry is made.In above-mentioned material, CMC is the abbreviation of carboxymethyl cellulose, and SBR is fourth
The abbreviation of benzene rubber latex.
S02: using extrusion coated, anode sizing agent is uniformly coated on copper foil, negative electrode slurry is uniformly applied for coating
Required diaphragm is made in cloth on copper foil, after baking.
S03: above-mentioned diaphragm is carried out roll-in, slitting and cross cutting by the preparation of pole piece, be prepared into required monopole ear positive plate and
Monopole ear negative electrode tab or multi pole ears anode pole piece and multi pole ears cathode pole piece.
S1: the preparation of naked battery core 6, by after cross cutting monopole ear positive plate, diaphragm, the monopole ear negative electrode tab after cross cutting according to
Lamination process is prepared into the naked battery core 6 of multi pole ears, or by multi pole ears positive plate, diaphragm, the multi pole ears cathode after cross cutting after cross cutting
Piece is prepared into the naked battery core 6 of multi pole ears according to the technique of winding；
S2: the anode ear of naked battery core 6 is made in step S1 and the negative electrode lug of naked battery core 6 using electric resistance welding or ultrasonic bond or swashs
Flush weld carries out prewelding, makes multiple pole piece parallels of naked battery core 6, and improves the welding effect of switching anode ear and negative electrode lug of transferring
Fruit；
S3: will with gel 2 and gel 2 be equipped with positioning device switching anode ear be welded on by Laser Welding it is naked
It, will be with gel 2 and gel 2 is equipped with turning for positioning device on the anode ear of battery core 6 or positive plate without included tab
Negative electrode lug is connect to be welded on the negative electrode lug of naked battery core 6 or negative electrode tab without included tab by Laser Welding；The anode ear of naked battery core 6
Tab 5 before transferring is referred to as with the negative electrode lug of naked battery core 6.
Negative electrode tab without the positive plate for carrying tab and without included tab is after tab welding, by manual coiling or certainly
It is dynamic to be wound into naked battery core 6；
S4: the aluminum plastic film 7 for having rushed hole is put into closedtop slot position fixture by encapsulation, is formd on the aluminum plastic film 7 behind punching hole
For fixing the interior hole of naked battery core 6；Naked battery core 6 made from step S3 is put into the interior hole of aluminum plastic film 7 again, and is filled according to positioning
Edge on the closedtop side 71 of aluminum plastic film 7 is balanced in the positioning set；Then by 7 doubling of aluminum plastic film, it is desirable that another closedtop side after doubling
On 71 along with balance after closedtop side 71 on along being aligned, finally encapsulated according to the encapsulation parameter of setting；
S5: the preparation of finished product battery core, by step S4 processing after naked battery core 6 successively carry out fluid injection, infiltration, chemical conversion, two envelopes,
Finished product battery core is made in the processes such as partial volume.Specifically, two envelopes are the gas extractions that chemical conversion is generated, airbag is dismissed and sealed
Dress；Partial volume is to detect the capacity of battery core and carry out stepping.
In step S4, as shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, positioning device is convex block 3, by by non-doubling aluminum plastic film 7
It is after 7 doubling of aluminum plastic film that edge on another closedtop side 71 after doubling is also same along the bottom surface for heading on two convex blocks 3 simultaneously on closedtop side 71
When head on the bottom surfaces of two convex blocks 3.
In step S4, positioning device is lug 4, by the way that edge on the closedtop side 71 of non-doubling aluminum plastic film 7 is headed on two simultaneously
The lower end of lug 4 and 2 junction of gel also heads on edge on another closedtop side 71 after doubling after 7 doubling of aluminum plastic film simultaneously
The lower end of two lugs 4 and 2 junction of gel；After battery core is completed in encapsulation, with small-sized guillotine by lug 4 along itself and gel
2 intersections are cut.
Embodiment 2
Difference from Example 1 is the height and length difference of convex block 3.
Embodiment 3
Difference from Example 1 is that the positioning device in gel 2 is lug 4, as shown in Figure 3, Figure 4.After encapsulation
Carry out cutting for lug 4.
Embodiment 4
Difference from Example 3 is the size of the lug 4 in gel 2 and bears with switching anode ear face or switching
The angle in tab face is different.
Comparative example 1
Difference from Example 1 is do not have positioning device in the gel 2 of the anode ear and negative electrode lug, such as schemes
7, shown in Fig. 8, naked battery core 6 entered hole and entered that the fold of aluminum plastic film 7 behind hole is aligned no convex block 3 or lug 4 is accurately positioned when encapsulation.
Comparative example 2
The difference is that, shown in Fig. 7, the corner of the transfer electrode lug root 11 is right angle with comparative example 1.
Naked 6 visual examination of battery core: naked battery core 6 each 100 of Example 1~4, comparative example 1~2 count outermost respectively
The ratio that layer negative electrode tab tab is punctured.The results are shown in Table 1.As shown in Table 1, in comparative example 2 transfer electrode lug root 11 angle
Portion is right angle, and the pierced ratio of tab 5 is uprushed before transferring, and uses the corner of transfer electrode lug root 11 for fillet, embodiment 1
~4, there is not the situation that tab 5 is pierced before transferring in comparative example 1, and thus illustrates, the angle of transfer electrode lug root 11 of the present invention
Tab 5, which is pierced, when portion is that fillet can effectively prevent ultrasonic bonding, before transferring even cracks, and it is bad to generate internal resistance even capacity
Product improve battery core quality.
Table 1
| Group | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 | Comparative example 2 |
| Tab pierces through ratio | 0/100 | 0/100 | 0/100 | 0/100 | 0/000 | 15/100 |
The exposed dimensional gaughing of gel 2: each 50 of the battery core before Example 1~4,1~2 fluid injection of comparative example is examined with CCD
Survey instrument and detect 2 exposed height of gel respectively, CCD refers to charge-coupled device, and gel 2 includes left shoulder and right shoulder, left shoulder and
Right shoulder refers to the top surface of the gel 2 positioned at tab two sides.The maximum exposed height for measuring the left shoulder of gel 2 and right shoulder is
It can.Mean value, the deviation, CPK of 2 exposed height of gel are calculated, CPK refers to process capability index, the rule of 2 exposed height of gel
Lattice are as follows: 0.2mm~2.5mm.The gel 2 of switching anode ear is exposed, and the results are shown in Table 2, outside the gel 2 for negative electrode lug of transferring
The results are shown in Table 3 for dew.
Table 2
Table 3
By table 2 and table 3 it is found that compared to comparative example 1~2, the gel 2 of Examples 1 to 4 switching anode ear and switching are negative
The exposed dimensional uniformity of gel 2 of tab is fine, and mean value can be effectively controlled, and CPK is 2.0 or more；And comparative example 1~
It is zero and the case where gel 2 surpasses the upper limit that it is exposed, which gel 2 occur, for 2 battery core.Thus illustrate the tab that uses of the present invention and
Packaging method be it is practicable, not only increase the exposed consistency of gel 2, and be not in that gel 2 is exposed and be
Zero the case where, is eliminated so as to effectively guarantee the quality of battery core because of the exposed bad bring corrosion risk of gel 2.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of lithium ion cell polar ear, it is characterised in that: including switching anode ear and switching negative electrode lug, the switching anode ear
It is equipped with gel (2) on switching negative electrode lug, the gel (2) is equipped with positioning device.
2. lithium ion cell polar ear according to claim 1, it is characterised in that: the positioning device is convex block (3), described
Gel (2) is equipped with two convex blocks (3), and two convex blocks (3) are respectively provided at the opposite two sides of switching anode ear or switching negative electrode lug
Opposite two sides, the bottom surface of two convex blocks (3) is in same level.
3. lithium ion cell polar ear according to claim 2, it is characterised in that: the height of the convex block (3) be no more than at
The half of product battery core thickness, the length of the convex block (3) are contained within gel (2) glue surface.
4. lithium ion cell polar ear according to claim 1, it is characterised in that: the positioning device is lug (4), in pole
Two lugs (4) are equipped with vertically on ear glue (2), two lugs (4) are respectively provided at the both side ends or switching negative electrode lug of switching anode ear
Both side ends, the lower end of each lug (4) and gel (2) junction is in same level.
5. lithium ion cell polar ear according to claim 4, it is characterised in that: the lug (4) and switching anode ear face
Or switching negative electrode lug face forms angle.
6. lithium ion cell polar ear according to claim 4, it is characterised in that: the lug (4) upwards be obliquely installed or
Tilt down setting.
7. lithium ion cell polar ear according to claim 1, it is characterised in that: the corner of the positive the ear portion of transferring and
The corner for cathode the ear portion of transferring is fillet.
8. a kind of packaging method of the lithium ion battery with the tab as described in claim 1 to 7, it is characterised in that: including
Following steps:
S1: the preparation of naked battery core (6), by after cross cutting monopole ear positive plate, diaphragm, the monopole ear negative electrode tab after cross cutting is according to folded
Blade technolgy is prepared into the naked battery core of multi pole ears (6), or by multi pole ears positive plate, diaphragm, the multi pole ears cathode after cross cutting after cross cutting
Piece is prepared into the naked battery core of multi pole ears (6) according to the technique of winding；
S2: the anode ear of naked battery core (6) is made in step S1 and the negative electrode lug of naked battery core (6) using electric resistance welding or ultrasonic bond or swashs
Flush weld carries out prewelding, makes multiple pole piece parallels of naked battery core (6)；
S3: will with gel (2) and gel (2) be equipped with positioning device switching anode ear be welded on by Laser Welding it is naked
On the anode ear of battery core (6) or the positive plate without included tab, gel (2) will be had and gel (2) is equipped with positioning dress
The switching negative electrode lug set is welded on the negative electrode lug of naked battery core (6) or negative electrode tab without included tab by Laser Welding；
Negative electrode tab without the positive plate for carrying tab and without included tab passes through manual coiling or automatic volume after tab welding
It is coiled into naked battery core (6)；
S4: the aluminum plastic film (7) for having rushed hole is put into closedtop slot position fixture by encapsulation, then by naked battery core (6) made from step S3
It is put into the interior hole of aluminum plastic film (7), and is balanced edge on the closedtop side (71) of aluminum plastic film (7) according to the positioning of positioning device；So
Afterwards by aluminum plastic film (7) doubling, it is desirable that another closedtop after doubling while on (71) along with balance after closedtop while (71) on along being aligned,
Finally encapsulated according to the encapsulation parameter of setting；
S5: the naked battery core (6) after step S4 processing is successively carried out fluid injection, infiltration, chemical conversion, two envelopes, divided by the preparation of finished product battery core
Finished product battery core is made in the processes such as appearance.
9. the packaging method of lithium ion battery according to claim 8, it is characterised in that: in step S4, the positioning dress
Convex block (3) are set to, by the way that edge on the closedtop side (71) of non-doubling aluminum plastic film (7) to be headed on to the bottom surface of two convex blocks (3), plastic-aluminum simultaneously
Edge on another closedtop side (71) after doubling is also headed on to the bottom surface of two convex blocks (3) simultaneously after film (7) doubling.
10. the packaging method of lithium ion battery according to claim 8, it is characterised in that: in step S4, the positioning dress
Lug (4) are set to, by the way that edge on the closedtop side (71) of non-doubling aluminum plastic film (7) is headed on two lugs (4) and gel (2) simultaneously
The lower end of junction, after aluminum plastic film (7) doubling by another closedtop side (71) after doubling along also simultaneously head on two lugs (4) with
The lower end of gel (2) junction；After packaging is accomplished, with small-sized guillotine by lug (4) along itself and gel (2) intersection
It cuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811167215.7A CN109301149B (en) | 2018-10-08 | 2018-10-08 | Lithium ion battery tab and packaging method of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811167215.7A CN109301149B (en) | 2018-10-08 | 2018-10-08 | Lithium ion battery tab and packaging method of lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109301149A true CN109301149A (en) | 2019-02-01 |
| CN109301149B CN109301149B (en) | 2022-09-13 |
Family
ID=65161736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811167215.7A Active CN109301149B (en) | 2018-10-08 | 2018-10-08 | Lithium ion battery tab and packaging method of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109301149B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110690508A (en) * | 2019-10-15 | 2020-01-14 | 深圳市浩然电池有限公司 | Automatic utmost point ear equipment of rolling over of electricity core |
| CN110962423A (en) * | 2019-11-13 | 2020-04-07 | 惠州锂威新能源科技有限公司 | Novel aluminum-plastic film structure, lithium ion battery and preparation method of lithium ion battery |
| CN111430770A (en) * | 2020-03-31 | 2020-07-17 | 蜂巢能源科技有限公司 | Cross cutting lamination processingequipment |
| CN111916833A (en) * | 2020-06-24 | 2020-11-10 | 惠州锂威新能源科技有限公司 | Preparation method of soft package lithium ion battery cell, battery cell and battery module |
| CN112382830A (en) * | 2020-08-03 | 2021-02-19 | 万向一二三股份公司 | Method for effectively preventing foil tab of soft package battery from being broken |
| WO2022000342A1 (en) * | 2020-06-30 | 2022-01-06 | 宁德新能源科技有限公司 | Pole piece, and electrode assembly and battery using same |
| CN114171857A (en) * | 2021-12-08 | 2022-03-11 | 珠海冠宇电池股份有限公司 | Battery tab and lithium ion battery |
| WO2022252532A1 (en) * | 2021-05-29 | 2022-12-08 | 浙江大学 | Lithium ion battery allowing implantation of optical sensor by optical fiber, and manufacturing method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001160379A (en) * | 1999-12-01 | 2001-06-12 | Toshiba Battery Co Ltd | Outer sheath-molding apparatus for film outer sheath cell |
| US6356724B1 (en) * | 1995-01-10 | 2002-03-12 | Steven Bruce Michlin | Disposable strip holder installation device and placement holding device and method for copiers, laser printers, fax machines and for toner cartridges used therein |
| CN201528019U (en) * | 2009-11-13 | 2010-07-14 | 东莞新能源电子科技有限公司 | Single lithium ion cell |
| CN203205465U (en) * | 2012-12-21 | 2013-09-18 | 惠州比亚迪电池有限公司 | Polymer battery and flexible packaging film for polymer battery |
| CN106450497A (en) * | 2016-12-08 | 2017-02-22 | 东莞市迈科新能源有限公司 | Multi-roll-core double-lug soft-package battery and production method thereof |
| CN107680929A (en) * | 2017-09-05 | 2018-02-09 | 深圳先进技术研究院 | The localization method of electronic packing body |
| JPWO2017159469A1 (en) * | 2016-03-16 | 2019-01-24 | Ｎｅｃエナジーデバイス株式会社 | Battery pack and battery pack manufacturing method |
-
2018
- 2018-10-08 CN CN201811167215.7A patent/CN109301149B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6356724B1 (en) * | 1995-01-10 | 2002-03-12 | Steven Bruce Michlin | Disposable strip holder installation device and placement holding device and method for copiers, laser printers, fax machines and for toner cartridges used therein |
| JP2001160379A (en) * | 1999-12-01 | 2001-06-12 | Toshiba Battery Co Ltd | Outer sheath-molding apparatus for film outer sheath cell |
| CN201528019U (en) * | 2009-11-13 | 2010-07-14 | 东莞新能源电子科技有限公司 | Single lithium ion cell |
| CN203205465U (en) * | 2012-12-21 | 2013-09-18 | 惠州比亚迪电池有限公司 | Polymer battery and flexible packaging film for polymer battery |
| JPWO2017159469A1 (en) * | 2016-03-16 | 2019-01-24 | Ｎｅｃエナジーデバイス株式会社 | Battery pack and battery pack manufacturing method |
| CN106450497A (en) * | 2016-12-08 | 2017-02-22 | 东莞市迈科新能源有限公司 | Multi-roll-core double-lug soft-package battery and production method thereof |
| CN107680929A (en) * | 2017-09-05 | 2018-02-09 | 深圳先进技术研究院 | The localization method of electronic packing body |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110690508A (en) * | 2019-10-15 | 2020-01-14 | 深圳市浩然电池有限公司 | Automatic utmost point ear equipment of rolling over of electricity core |
| CN110962423A (en) * | 2019-11-13 | 2020-04-07 | 惠州锂威新能源科技有限公司 | Novel aluminum-plastic film structure, lithium ion battery and preparation method of lithium ion battery |
| CN111430770A (en) * | 2020-03-31 | 2020-07-17 | 蜂巢能源科技有限公司 | Cross cutting lamination processingequipment |
| CN111916833A (en) * | 2020-06-24 | 2020-11-10 | 惠州锂威新能源科技有限公司 | Preparation method of soft package lithium ion battery cell, battery cell and battery module |
| WO2022000342A1 (en) * | 2020-06-30 | 2022-01-06 | 宁德新能源科技有限公司 | Pole piece, and electrode assembly and battery using same |
| CN115398737A (en) * | 2020-06-30 | 2022-11-25 | 宁德新能源科技有限公司 | Pole piece, electrode assembly and battery applying same |
| CN112382830A (en) * | 2020-08-03 | 2021-02-19 | 万向一二三股份公司 | Method for effectively preventing foil tab of soft package battery from being broken |
| WO2022252532A1 (en) * | 2021-05-29 | 2022-12-08 | 浙江大学 | Lithium ion battery allowing implantation of optical sensor by optical fiber, and manufacturing method |
| CN114171857A (en) * | 2021-12-08 | 2022-03-11 | 珠海冠宇电池股份有限公司 | Battery tab and lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109301149B (en) | 2022-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109301149A (en) | A kind of packaging method of lithium ion cell polar ear and lithium ion battery | |
| JP4438863B2 (en) | Winding type electrochemical device and manufacturing method thereof | |
| JP4720172B2 (en) | battery | |
| KR101465172B1 (en) | Secondary battery of pouch type having sealing margin for improving durability | |
| CN113097439B (en) | Pole piece and battery | |
| JP2022521327A (en) | Battery case for secondary battery and pouch type secondary battery | |
| JPH10106536A (en) | Non-aqueous electrolyte secondary battery | |
| US20110293996A1 (en) | Stacked secondary battery and production method thereof | |
| CN109494413B (en) | Soft package lithium ion battery and preparation method thereof | |
| CN103270625B (en) | Lithium rechargeable battery | |
| CN110767935A (en) | Lithium ion battery with elliptical structure and preparation method thereof | |
| CN110931802A (en) | Preparation method and application of flexible light non-metal current collector and pole piece, lithium storage battery and preparation method thereof | |
| JP2006134604A (en) | Manufacturing method of power storage device | |
| JP5796497B2 (en) | battery | |
| WO2009133652A1 (en) | Cylindrical battery and manufacturing method thereof | |
| JP2019061878A (en) | Electrochemical device | |
| CN209878657U (en) | Three-electrode half cell | |
| CN104681877B (en) | A kind of electrokinetic cell pole piece, electrokinetic cell and preparation method thereof | |
| WO2013122448A1 (en) | Lithium-ion battery | |
| JPH11111259A (en) | Winding type battery | |
| JP4518744B2 (en) | LAMINATED BATTERY, PROCESS FOR PRODUCING THE SAME, AND L-SHAPE FOR PRODUCTION OF LAMINATED BATTERY | |
| CN203746957U (en) | Power battery pole core and power battery thereof | |
| JP3749010B2 (en) | Method for producing non-aqueous electrolyte battery | |
| CN105591041B (en) | Secondary cell | |
| JPH09306470A (en) | Nonaqueous electrolyte secondary battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200520 Address after: Room g0232, headquarters building, Changsha Zhongdian Software Park, No. 39, Jianshan Road, high tech Development Zone, Changsha City, Hunan Province Applicant after: Thornton New Energy Technology (Changsha) Co.,Ltd. Address before: 411100 Hunan province Xiangtan City Jiuhua Demonstration Zone No. 78 West Benz Applicant before: SOUNDON NEW ENERGY TECHNOLOGY Co.,Ltd. |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230914 Address after: No. 46, Qingfu Anshijia, Guoxiangqiao Village, Lanjiang Street, Yuyao City, Ningbo City, Zhejiang Province, 315402 Patentee after: Yuyao Haitai Trading Co.,Ltd. Address before: Room g0232, headquarters building, Changsha Zhongdian Software Park, No. 39, Jianshan Road, Changsha hi tech Development Zone, Hunan 410000 Patentee before: Thornton New Energy Technology (Changsha) Co.,Ltd. |