CN106898823B - A kind of preparation method of water storage type flexible packing lithium ion electric core and battery - Google Patents
A kind of preparation method of water storage type flexible packing lithium ion electric core and battery Download PDFInfo
- Publication number
- CN106898823B CN106898823B CN201710250034.XA CN201710250034A CN106898823B CN 106898823 B CN106898823 B CN 106898823B CN 201710250034 A CN201710250034 A CN 201710250034A CN 106898823 B CN106898823 B CN 106898823B
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- China
- Prior art keywords
- pole piece
- core
- water storage
- storage type
- lithium ion
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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
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses the preparation methods of a kind of water storage type flexible packing lithium ion electric core and battery, for promoting battery performance.Method includes: the soldering polar ear on pole piece, has gel on the tab, wherein the gap of the gel and the pole piece is between 4 to 11 millimeters；It in the anode pole piece for being welded with positive pole ear, and is welded between the cathode pole piece of negative lug, diaphragm is set, wherein diaphragm edge described in the gel Edge Distance is between 3 to 10 millimeters；The anode pole piece and cathode pole piece and diaphragm are wound, core is made；In the top and bottom of the core top module and bottom module of device for storing liquid are installed respectively, water storage type flexible packing lithium ion electric core is made.
Description
Technical field
The present invention relates to technical field of lithium ion, and in particular to a kind of water storage type flexible packing lithium ion electric core and electricity
The preparation method in pond.
Background technique
In recent years, flexible packing lithium ion battery is as a kind of secondary cell, and application is more next extensively, to the properties of battery
It is required that also higher and higher.
Currently used core strueture is directly placed into shell after coating pole piece with diaphragm, after battery Vacuum Package,
Seldom, most of electrolyte is in the inside of pole piece and the surface of diaphragm, with the charge and discharge of battery core for its battery core electrolyte inside residual
Electric number increases, and partial electrolyte liquid will lose activity, and when not extra electrolyte is replenished in time, performance occurs therewith
Variation, capacity is reduced, internal resistance increases, especially battery pack, and this phenomenon performance becomes apparent from, and it is obvious that rear course continuation mileage is used for multiple times
It reduces.
Summary of the invention
The embodiment of the present invention provides the preparation method of a kind of water storage type flexible packing lithium ion electric core and battery, for being promoted
Battery performance.
To solve the above problems, technical solution used in the embodiment of the present invention is as follows:
A kind of preparation method of water storage type flexible packing lithium ion electric core and battery, comprising:
The soldering polar ear on pole piece has gel on the tab, wherein the gap of the gel and the pole piece
Between 4 to 11 millimeters；
It in the anode pole piece for being welded with positive pole ear, and is welded between the cathode pole piece of negative lug, diaphragm is set,
In, diaphragm edge described in the gel Edge Distance is between 3 to 10 millimeters；
The anode pole piece and cathode pole piece and diaphragm are wound, core is made；
In the top and bottom of the core top module and bottom module of device for storing liquid are installed respectively, water storage type is made
Flexible packing lithium ion electric core.
A kind of preparation method of water storage type flexible packing lithium ion battery, comprising:
Water storage type flexible packing lithium ion electric core is made using method as described above；
The water storage type flexible packing lithium ion electric core is put into plastic-aluminum putamina and is packaged；
Water storage type flexible packing lithium ion battery is made.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
By installing device for storing liquid additional in core, it can store a large amount of electrolyte, increase battery core electrolyte inside and possess
Amount, can be replenished in time when pole piece lacks liquid, guarantee that battery core performance normally plays；Meanwhile device for storing liquid has certain intensity
And high temperature resistant property, it can protect inside battery structure, not by external force and outer heat damage；It is thus possible to which it is comprehensive to effectively improve battery
Close performance.
Detailed description of the invention
Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to institute in embodiment and description of the prior art
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of water storage type flexible packing lithium ion electric core provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of pole piece and tab；
Fig. 3 is the structural schematic diagram of top module；
Fig. 4 is the structural schematic diagram that positive pole ear and negative lug pass through the fluting on top module；
Fig. 5 is the structural schematic diagram of bottom module；
Fig. 6 is the preparation method of a kind of water storage type flexible packing lithium ion electric core and battery provided in an embodiment of the present invention
Flow diagram.
Specific embodiment
The embodiment of the present invention provides the preparation method of a kind of water storage type flexible packing lithium ion electric core and battery, for being promoted
Battery performance, for increasing battery core electrolyte inside ownership, to improve the comprehensive performance of battery.
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
Description and claims of this specification and term " first " in above-mentioned attached drawing, " second ", " third " etc. are
For distinguishing different objects, it is not use to describe a particular order.In addition, term " includes " and " having " and they are any
Deformation, it is intended that cover and non-exclusive include.Such as contain the process, method, system, product of a series of steps or units
Or equipment is not limited to listed step or unit, but optionally further comprising the step of not listing or unit, or can
Selection of land further includes the other step or units intrinsic for these process, methods, product or equipment.
Below by specific embodiment, it is described in detail respectively.
Referring to FIG. 1, the embodiment of the present invention provides a kind of water storage type flexible packing lithium ion electric core, which includes core 10
And device for storing liquid.
Wherein, the device for storing liquid includes both ends i.e. 21 He of top module of top and bottom for being separately mounted to core 10
Bottom module 22；The core 10 is wound by anode pole piece, diaphragm and cathode pole piece, is welded with just on the anode pole piece
Pole tab is welded with negative lug on the cathode pole piece.
Referring to FIG. 2, being the structural schematic diagram of pole piece and tab, tab 12 is welded on pole piece 11, tab 12 includes pole
Ear metal tape 13 and gel 14.The structure of anode pole piece and cathode pole piece can be identical, as shown in Figure 2 structure, be used as just
When pole, pole piece 11 and tab 12 therein are anode pole piece and positive pole ear, when being used as cathode, pole piece 11 and tab 12 therein
It is cathode pole piece and negative lug.Two structures as shown in Figure 2 add diaphragm, Ji Kejuan respectively as anode and cathode
Around formation core 10.As shown in Figure 1, positive pole ear 121 and negative lug 122 are respectively positioned on the top of core 10.
As shown in figure 3, being the structural schematic diagram of top module 21, it is seen then that have fluting 211 on top module 21；Such as Fig. 4
Shown, the fluting 211 is for allowing positive pole ear 121 and negative lug 122 to pass through.In battery core as shown in Figure 1, top module
21 are located at the fluting 211 of the top of core 10, the positive pole ear 121 and the negative lug 122 from the top module 21
In be pierced by.Fluting 211 on the top module 21 is perforative through slot, and optionally, the width of the through slot is 0.3 to 0.5
Between millimeter, the length of the through slot is suitable with the maximum distance of the positive pole ear and the negative lug, in other words with two
The back gauge of gel 14 on a tab is suitable.
As shown in figure 5, be the structural schematic diagram of bottom module 22, difference identical as the size of top module 21
It is do not have fluting in bottom module 22.
In the embodiment of the present invention, the top module 21 and the bottom module 22 are all made of microwell plate, using as liquid storage
Device uses.The microwell plate is the plate with porous structure.The porous structure includes the micropore of dense distribution, optional
, the aperture of the micropore is between 2 to 50 microns.
In the embodiment of the present invention, the microwell plate is needed using resistant material.The materials such as hydrofluoric acid are generallyd use in battery core
The electrolyte of material, therefore, the material of the microwell plate can be the materials such as the polyethylene (PE) of hydrofluoric acid corrosion resistance or polypropylene (PP)
Matter.
In the embodiment of the present invention, the width of the microwell plate is suitable with the thickness of the core 10, the length of the microwell plate
It spends suitable with the difference of the length of the core 10 and thickness.
In the embodiment of the present invention, gel 14 is provided on the positive pole ear 121 and the negative lug 122, it is micro-
Orifice plate top module 21 in other words, are set in the gap 15 between gel 14 and pole piece edge.Under the gel 14
Edge is suitable with the thickness of the microwell plate at a distance from the top edge of the anode pole piece or the cathode pole piece 11, such as
It, specifically should be corresponding with battery core performance requirement between 3 to 10 millimeters.
In traditional battery core, gel is proximate to pole piece edge, and subsequent melt closure prevents leakage.And the present invention is implemented
In example, 21 reserved space of top module for device for storing liquid is needed, therefore, gel 14 and 11 edge of pole piece must when pole piece makes
Certain space must be reserved, the size of reserved space can be determined according to battery performance requirements, generally between 3~10mm, tool
Tab gap digit can be increased by 3~10mm, as shown in Figure 1 in pole piece spot welding by body on the basis of stock size.
In the embodiment of the present invention, the top module 21 and the top of core 10 are come into full contact with, bottom module 22 and core
10 bottom comes into full contact with, and the modes such as rubberizing paper can be used between each other and fix.
It is subsequent, above-mentioned water storage type flexible packing lithium ion electric core is packaged, can be prepared by corresponding battery.
The embodiment of the present invention also provides a kind of water storage type flexible-packaged lithium with above-mentioned water storage type flexible packing lithium ion electric core
Ion battery.
In the following, being carried out to the preparation method of a kind of water storage type flexible packing lithium ion electric core of the embodiment of the present invention and battery
Explanation.
Referring to FIG. 6, the production method of the embodiment of the present invention can include:
61. the soldering polar ear on pole piece, there is gel on the tab, wherein the gel and the pole piece
Gap is between 4 to 11 millimeters.
In practical application, mash welder soldering polar ear on the pole piece can be used, specifically, the pole piece cut can be put
Onto mash welder, tab is put into right above pole piece sky foil position, then gel edge is welded far from 4~11mm of pole piece edge.
62. in the anode pole piece for being welded with positive pole ear, and be welded between the cathode pole piece of negative lug, setting every
Film, wherein diaphragm edge described in the gel Edge Distance is between 3 to 10 millimeters.
63. pair anode pole piece and cathode pole piece and diaphragm are wound, core is made.
In practical application, up- coiler can be used, it, will be in anode pole piece and cathode pole piece and diaphragm by normal winding method
Between be aligned, the anode pole piece and cathode pole piece and diaphragm are wound, it is ensured that gel edge far from diaphragm edge 3~
10mm。
64. installing the top module and bottom module of device for storing liquid respectively in the top and bottom of the core, storage is made
Liquid formula flexible packing lithium ion electric core.
Wherein, gummed paper can be used to the top module and the bottom module being mounted at the top and bottom of the core
It is fixed.
More than, it is the preparation method of water storage type flexible packing lithium ion electric core.
Further, the preparation method of water storage type flexible packing lithium ion battery is also provided, method include above step 61 to
64, and further include:
It is packaged 65. the water storage type flexible packing lithium ion electric core is put into plastic-aluminum putamina；It is subsequent, routinely Soft Roll
Lithium ion battery manufacture craft is filled, that is, can be made into water storage type flexible packing lithium ion battery.
Using water storage type flexible packing lithium ion electric core and battery made from the above method, as described above, herein no longer
It repeats.
The preparation method of water storage type flexible packing lithium ion electric core and battery provided by the invention, can be in battery
Resistance, voltage, capacity, cycle performance are consistent, while also improving the security performance of battery, have thereby further ensured that battery
Quality.
More than, the embodiment of the invention provides a kind of water storage type flexible packing lithium ion electric core, the battery with the battery core, with
And production method, technical solution of the present invention increase electricity by installing device for storing liquid additional in core to corresponding preparation method in other words
Core inner electrolyte ownership can be replenished in time with improving the comprehensive performance of battery when pole piece lacks liquid, guarantee battery core performance
It is normal to play；Meanwhile device for storing liquid has certain intensity and high temperature resistant property, can protect inside battery structure, not by outer
Power and outer heat damage.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment
Part, may refer to the associated description of other embodiments.
Above-described embodiment is merely illustrative of the technical solution of the present invention, rather than its limitations；The ordinary skill people of this field
Member is it is understood that it can still modify to technical solution documented by the various embodiments described above, or to part of skill
Art feature is equivalently replaced；And these are modified or replaceed, each reality of the present invention that it does not separate the essence of the corresponding technical solution
Apply the spirit and scope of a technical solution.
Claims (6)
1. a kind of preparation method of water storage type flexible packing lithium ion electric core characterized by comprising
The soldering polar ear on pole piece has gel on the tab, wherein the gap of the gel and the pole piece is 4
To between 11 millimeters；
It in the anode pole piece for being welded with positive pole ear, and is welded between the cathode pole piece of negative lug, diaphragm is set, wherein
Diaphragm edge described in the gel Edge Distance is between 3 to 10 millimeters；
The anode pole piece and cathode pole piece and diaphragm are wound, core is made；
In the top and bottom of the core top module and bottom module of device for storing liquid are installed respectively, water storage type Soft Roll is made
Fill lithium-ion electric core；
Wherein, the top module and the bottom module that are mounted at the top and bottom of the core are consolidated using gummed paper
It is fixed；
Wherein, the top module is set in the gap between gel and pole piece edge, and the gel is for subsequent molten
Melting closure prevents leakage；
Wherein, the top module has fluting, and the positive pole ear and the negative lug are located at the top of the core, and
It is pierced by from the fluting of the top module；
Wherein, the top module and the bottom module are microwell plate, and the microwell plate is the plate with porous structure,
The porous structure includes the micropore of dense distribution, and the aperture of the micropore is between 2 to 50 microns.
2. the method according to claim 1, wherein the soldering polar ear on pole piece includes:
Using mash welder on the pole piece soldering polar ear.
3. the method according to claim 1, wherein described to the anode pole piece and cathode pole piece and diaphragm
It is wound and includes:
The anode pole piece and cathode pole piece and diaphragm are wound using up- coiler.
4. the method according to claim 1, wherein
The water storage type flexible packing lithium ion electric core includes: core and device for storing liquid；The core is by anode pole piece, diaphragm and bears
Pole pole piece coiling forms, and positive pole ear is welded on the anode pole piece, is welded with negative lug on the cathode pole piece；It is described
Device for storing liquid includes the top module and bottom module for being separately mounted to core both ends.
5. according to the method described in claim 4, it is characterized in that,
The material of the microwell plate is polythene PE or polypropylene PP.
6. a kind of preparation method of water storage type flexible packing lithium ion battery characterized by comprising
Water storage type flexible packing lithium ion electric core is made using the method as described in any in claim 1 to 5；
The water storage type flexible packing lithium ion electric core is put into plastic-aluminum putamina and is packaged；
Water storage type flexible packing lithium ion battery is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710250034.XA CN106898823B (en) | 2017-04-17 | 2017-04-17 | A kind of preparation method of water storage type flexible packing lithium ion electric core and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710250034.XA CN106898823B (en) | 2017-04-17 | 2017-04-17 | A kind of preparation method of water storage type flexible packing lithium ion electric core and battery |
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| CN106898823A CN106898823A (en) | 2017-06-27 |
| CN106898823B true CN106898823B (en) | 2019-03-29 |
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| CN201710250034.XA Expired - Fee Related CN106898823B (en) | 2017-04-17 | 2017-04-17 | A kind of preparation method of water storage type flexible packing lithium ion electric core and battery |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950609B (en) * | 2017-12-20 | 2024-03-15 | 成都市银隆新能源有限公司 | Liquid storage gummed paper for lithium ion soft package battery core, preparation method and battery core |
| CN108994436A (en) * | 2018-08-08 | 2018-12-14 | 泰州天科电子科技有限公司 | Lithium battery copper aluminium electrode welding procedure |
| CN111725554B (en) * | 2019-03-22 | 2021-08-27 | 深圳格林德能源集团有限公司 | Design method for controlling back sealing step of top sealing position of soft package lithium ion battery |
| CN111463497B (en) * | 2020-04-17 | 2021-05-11 | 山东聚信新能源科技有限公司 | Local deformation improvement method of high-energy-density flexible package ion battery and battery |
| CN113764791B (en) * | 2020-05-18 | 2023-04-07 | 比亚迪股份有限公司 | Electricity core subassembly, battery package and car |
| CN114497617B (en) * | 2020-11-12 | 2023-11-21 | 中国科学院大连化学物理研究所 | Diaphragm for zinc-bromine flow battery and application |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640284A (en) * | 2009-06-05 | 2010-02-03 | 珠海汉格能源科技有限公司 | Cylinder type lithium ion battery cell and making method thereof |
| CN203119002U (en) * | 2013-01-24 | 2013-08-07 | 株洲市高远电池有限公司 | Base gel gumming paper for lithium ion battery with rigid shell |
| CN203617373U (en) * | 2013-12-20 | 2014-05-28 | 山东精工电子科技有限公司 | Porous cylindrical lower gasket of lithium ion battery |
| CN204407401U (en) * | 2014-12-26 | 2015-06-17 | 山东精工电子科技有限公司 | A kind of soft bag lithium ionic cell |
| CN205488348U (en) * | 2016-02-01 | 2016-08-17 | 大荔德飞新能源科技有限公司 | Lithium ion battery pole plate |
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