CN108461666A - A kind of rectangular lithium ion battery and production method - Google Patents
A kind of rectangular lithium ion battery and production method Download PDFInfo
- Publication number
- CN108461666A CN108461666A CN201711008132.9A CN201711008132A CN108461666A CN 108461666 A CN108461666 A CN 108461666A CN 201711008132 A CN201711008132 A CN 201711008132A CN 108461666 A CN108461666 A CN 108461666A
- Authority
- CN
- China
- Prior art keywords
- negative electrode
- battery core
- sealed
- guide pin
- 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.)
- Pending
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 239000003292 glue Substances 0.000 claims abstract description 22
- 239000000853 adhesive Substances 0.000 claims abstract description 16
- 230000001070 adhesive effect Effects 0.000 claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 9
- 239000004411 aluminium Substances 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 10
- 238000001723 curing Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000000016 photochemical curing Methods 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229920000159 gelatin Polymers 0.000 claims description 3
- 239000008273 gelatin Substances 0.000 claims description 3
- 235000019322 gelatine Nutrition 0.000 claims description 3
- 235000011852 gelatine desserts Nutrition 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003792 electrolyte Substances 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- 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
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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)
- Secondary Cells (AREA)
- Primary Cells (AREA)
Abstract
A kind of rectangular lithium ion battery, including battery core, shell and seal assembly；Battery core is sealed in shell by seal assembly；Battery core includes the positive electrode, the negative electrode and the separator winding or folds；Seal assembly includes rubber chock and sealing cover, is provided with the hole that passes through of positive guide pin and negative electrode guide needle on rubber chock, and the aluminium stalk of positive guide pin and negative electrode guide needle is extruded in by rubber chock in hole；It is provided with the punched out of positive guide pin and negative electrode guide needle on sealing cover, the first sealed step is provided in punched out, to seal between positive guide pin and negative electrode guide needle and sealing cover by optic-solidified adhesive at the first sealed step；It is provided with the second sealed step on the outside of the first sealed step, is filled and is sealed by heat-curable glue at the second sealed step.The sealing effect of the rectangular lithium ion battery of the present invention is good, and manufacture craft strong operability.
Description
Technical field
The present invention relates to a kind of lithium ion battery more particularly to a kind of rectangular lithium ion battery and production methods.
Background technology
Battery core is generally sealed in shell with rubber stopper by traditional lithium ion battery, however after injecting electrolyte
Due to the boiling of electrolyte when baking, gas may be caused to be evaporated from the junction of rubber stopper and guide pin, led
The air-tightness for sending a telegraph pond goes wrong.
Invention content
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide a kind of rectangular lithium that sealing effect is good
Ion battery and production method.
In order to solve the above technical problems, technical solution proposed by the present invention is：A kind of rectangular lithium ion battery, including battery
Core, shell and seal assembly；Battery core is sealed in shell by the seal assembly；The battery core include anode,
Cathode and membrane winding fold；The external sheath of the battery core has one layer or laminated diaphragm, and coats
The diaphragm of battery core is got up with transparent gluing knot so that battery core is in ellipticity；It has been respectively coated just on anode and cathode
Pole material and negative material are connected separately with positive guide pin and negative electrode guide needle on anode and cathode, and positive guide pin and negative
Pole guide pin stretches out shell；The seal assembly includes rubber chock and sealing cover, and positive guide pin is provided on the rubber chock
With the hole that passes through of negative electrode guide needle, the aluminium stalk of the anode guide pin and negative electrode guide needle is extruded in by rubber chock in hole；It is described
It is provided with the punched out of positive guide pin and negative electrode guide needle on sealing cover, the first sealed step is provided in punched out, first
To seal between positive guide pin and negative electrode guide needle and sealing cover by optic-solidified adhesive at sealed step；In the first sealed step
Outside is provided with the second sealed step, is filled and is sealed by heat-curable glue at the second sealed step.
In the present invention, when battery core being sealed in shell, optic-solidified adhesive is first used（Usually use UV glue）Into
The problem of row sealing, reusable heat solidification glue is sealed, is volatilized due to ebuillition of heated this addresses the problem electrolyte.In this hair
Bright middle optic-solidified adhesive is normal temperature cure glue, first forms one tentatively at rubber chock and positive guide pin and negative electrode guide needle in this way
Sealing；When carrying out heat-curable glue sealing, the boiling of electrolyte can be caused to the heating of glue, in the work of optic-solidified adhesive
It will not be evaporated with lower electrolyte.If at the first sealed step directly with heat-curable glue if when being heating and curing
Since the volatilization of electrolyte can cause heat-curable glue and the junction of positive guide pin and negative electrode guide needle to generate bubble, to influence lithium
The air-tightness of ion battery.If directly using optic-solidified adhesive in the first sealed step and the second sealed step, it will appear glue
Sealing surfaces out-of-flatness will ensure entire battery this is because the viscosity of optic-solidified adhesive is very low when carrying out photocuring
It is steady very difficult；Simultaneously because optic-solidified adhesive（Such as UV glue）, generally all non-refractory, UV glue reach 110 in temperature and take the photograph
Family name will be cracked when spending, this is a highly unstable factor during lithium ion battery aging, if always
UV glue cracks when change, then entire battery is required to scrap.
In the present invention, be first sealed with UV glue, be then sealed with heat-curable glue, in this way baking when due to
Heat-curable glue is heat safe be not in crackle, this makes it possible to the sealing effects for ensureing battery.
Above-mentioned lithium ion battery, it is preferred that one piece and rubber chock one are provided between the sealing cover and aluminium stalk
The top position of molding convex block, the convex block is less than the first sealed step 0.5-2mm.In the present invention, the setting energy of convex block
Enough ensure the creepage distance between sealing cover and positive guide pin and negative electrode guide needle, prevent when being sealed anode guide pin and
The aluminium of negative electrode guide needle obstructs run-off the straight and is in electrical contact with sealing cover.
Above-mentioned rectangular lithium ion battery, it is preferred that the height of second sealed step is four points of sealing cover height
One of to 3/4ths, ensure the thickness of heat-curable glue.
Above-mentioned rectangular lithium ion battery, it is preferred that the diaphragm stretches out the top and bottom 0.2-1mm of battery core,
The diaphragm stretched out at the top of battery core is in close contact with rubber chock.Prevent between anode and cathode since creepage distance is too short and
Short circuit occurs.Meanwhile it can be isolated by the diaphragm stretched between battery core and sealing cover.
Above-mentioned lithium ion battery, it is preferred that be provided with cross-over block between the bottom and shell of the battery core, prevent
Only anode and cathode are directly in contact with sealing cover.
The production method of above-mentioned lithium ion battery, includes the following steps：Include the following steps：1）On anode and cathode
Positive electrode and negative material is respectively coated；
2）Anode after coating material is cut with cathode, ensures the appearance for not cutting burr during cutting；
Positive guide pin and negative electrode guide needle are riveted on the anode and cathode cut respectively；
3）The positive electrode, the negative electrode and the separator of step 2 is wound together and either folds then one layer of cladding or laminated diaphragm and with thoroughly
Gelatin bonds so that battery core is in ellipticity；
4）Battery core is handled；
5）It will be in treated battery core sealing shell：Battery core is encased in shell；It arrives rubber stopper is packaged
On positive guide pin and negative electrode guide needle；Sealing cover is attached on rubber chock, and is welded seal cap sealing by Laser Welding
On the shell；It is sealed with optic-solidified adhesive in the first sealed step of sealing cover；Photocuring in the first sealed step
After adhesive curing, is filled and be heating and curing with heat-curable glue in the second sealed step.
The production method of above-mentioned lithium ion battery, it is preferred that the bottom of the shell is provided with one piece of cross-over block.
Compared with the prior art, the advantages of the present invention are as follows：The sealing effect of the rectangular lithium ion battery of the present invention is good, and
And manufacture craft strong operability.
Description of the drawings
Fig. 1 is the structural schematic diagram of rectangular lithium ion battery of the present invention.
Marginal data
1, battery core；2, shell；3, positive guide pin；4, negative electrode guide needle；5, rubber chock；6, sealing cover；7, aluminium obstructs；8, first
Sealed step；9, the second sealed step；10, convex block.
Specific implementation mode
To facilitate the understanding of the present invention, present invention work more comprehensively, is meticulously described below in conjunction with preferred embodiment,
But the protection scope of the present invention is not limited to the following specific embodiments.
It should be strongly noted that when to be described as " be fixed on, be fixed in, be connected to or be communicated in " another for a certain element
When on element, it can be directly fixed, affixed, connection or be connected on another element, can also be by connecting among other
Fitting is indirectly fixed, affixed, connects or is connected on another element.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention
Protection domain.
Embodiment
A kind of rectangular lithium ion battery as shown in Figure 1, including battery core 1, shell 2 and seal assembly；Seal assembly
Battery core 1 is sealed in shell 2；Battery core 1 includes that the positive electrode, the negative electrode and the separator winds or folds；Battery
The external sheath of body 1 has one layer or laminated diaphragm, and coats the transparent gluing knot of diaphragm of battery core 1 so that
Battery core 1 is in ellipticity；Positive electrode and negative material is respectively coated on anode and cathode, on anode and cathode respectively
It is connected with positive guide pin 3 and negative electrode guide needle 4, and positive guide pin 3 and negative electrode guide needle 4 stretch out shell；Seal assembly includes rubber
Chock 5 and sealing cover 6, positive guide pin 3 and negative electrode guide needle 4 are provided on rubber chock 5 passes through hole, positive guide pin 3 and cathode
The aluminium stalk of guide pin 4 is extruded in by rubber chock 5 in hole；Wearing for positive guide pin 3 and negative electrode guide needle 4 is provided on sealing cover 6
Portal, the first sealed step 8 is provided in punched out, positive guide pin 3 is made by optic-solidified adhesive at the first sealed step 8
It is sealed between negative electrode guide needle 4 and sealing cover 6；The outside of first sealed step 8 is provided with the second sealed step 9, second
It is filled and is sealed by heat-curable glue at sealed step 9.
In the present embodiment, it is provided with one piece and 5 integrally formed convex block 10 of rubber chock between sealing cover 6 and aluminium stalk, it is convex
The top position of block 10 is less than the first sealed step 0.5-2mm.
In the present embodiment, the height of the second sealed step 9 is a quarter of 6 height of sealing cover to 3/4ths.
In the present embodiment, diaphragm stretches out the top and bottom 0.2-1mm of battery core 1,1 top of battery core stretch out every
Film is in close contact with rubber chock 5.Battery core 1 and shell are provided with one piece of cross-over block between 2 bottom.
The production method of the lithium ion battery of the present embodiment, includes the following steps：1）It is respectively coated on anode and cathode
Positive electrode and negative material；
2）Anode after coating material is cut with cathode, ensures the appearance for not cutting burr during cutting；
Positive guide pin and negative electrode guide needle are riveted on the anode and cathode cut respectively；
3）The positive electrode, the negative electrode and the separator of step 2 is wound together and either folds then one layer of cladding or laminated diaphragm and with thoroughly
Gelatin bonds so that battery core is in ellipticity；
4）Battery core is handled；
5）It will be in treated battery core sealing shell：Battery core is encased in shell；It arrives rubber stopper is packaged
On positive guide pin and negative electrode guide needle；Sealing cover is attached on rubber chock, and is welded seal cap sealing by Laser Welding
On the shell；It is sealed with optic-solidified adhesive in the first sealed step of sealing cover；Photocuring in the first sealed step
After adhesive curing, is filled and be heating and curing with heat-curable glue in the second sealed step.
The sealing effect of the rectangular lithium ion battery of the present embodiment is good, and manufacture craft strong operability.
Claims (7)
1. a kind of rectangular lithium ion battery, it is characterised in that：Including battery core, shell and seal assembly；The seal assembly
Battery core is sealed in shell；The battery core includes the positive electrode, the negative electrode and the separator winding or folds；The electricity
The external sheath of pond core has one layer or laminated diaphragm, and coats the transparent gluing knot of diaphragm of battery core, makes
It is in ellipticity to obtain battery core；Positive electrode and negative material has been respectively coated on anode and cathode, has divided on anode and cathode
It is not connected with positive guide pin and negative electrode guide needle, and positive guide pin and negative electrode guide needle stretch out shell；The seal assembly includes rubber
Rubber plug block and sealing cover, are provided with the hole that passes through of positive guide pin and negative electrode guide needle on the rubber chock, the anode guide pin and
The aluminium stalk of negative electrode guide needle is extruded in by rubber chock in hole；Positive guide pin and negative electrode guide needle are provided on the sealing cover
Punched out is provided with the first sealed step in punched out, makes positive guide pin by optic-solidified adhesive at the first sealed step
It is sealed between negative electrode guide needle and sealing cover；The second sealed step is provided on the outside of the first sealed step, in the second sealing
It is filled and is sealed by heat-curable glue at step.
2. lithium ion battery according to claim 1, it is characterised in that：It is provided with one piece between the sealing cover and aluminium stalk
It is less than the first sealed step 0.5-2mm with the top position of the integrally formed convex block of rubber chock, the convex block.
3. lithium ion battery according to claim 1, it is characterised in that：The height of second sealed step is sealing cover
The a quarter of height is to 3/4ths.
4. lithium ion battery according to claim 1, it is characterised in that：The diaphragm stretches out the top and bottom of battery core
Portion 0.2-1mm, the diaphragm that battery core top is stretched out are in close contact with rubber chock.
5. lithium ion battery according to claim 4, it is characterised in that：It is arranged between the battery core and outer casing bottom
There is one piece of cross-over block.
6. according to the production method of claim 1-5 any one of them lithium ion batteries, it is characterised in that：Including following step
Suddenly：1）Positive electrode and negative material is respectively coated on anode and cathode；
2）Anode after coating material is cut with cathode, ensures the appearance for not cutting burr during cutting；
Positive guide pin and negative electrode guide needle are riveted on the anode and cathode cut respectively；
3）The positive electrode, the negative electrode and the separator of step 2 is wound together and either folds then one layer of cladding or laminated diaphragm and with thoroughly
Gelatin bonds so that battery core is in ellipticity；
4）Battery core is handled；
5）It will be in treated battery core sealing shell：Battery core is encased in shell；It arrives rubber stopper is packaged
On positive guide pin and negative electrode guide needle；Sealing cover is attached on rubber chock, and is welded seal cap sealing by Laser Welding
On the shell；It is sealed with optic-solidified adhesive in the first sealed step of sealing cover；Photocuring in the first sealed step
After adhesive curing, is filled and be heating and curing with heat-curable glue in the second sealed step.
7. the production method of lithium ion battery according to claim 6, it is characterised in that：It is arranged in the bottom of the shell
There is one piece of cross-over block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711008132.9A CN108461666A (en) | 2017-10-25 | 2017-10-25 | A kind of rectangular lithium ion battery and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711008132.9A CN108461666A (en) | 2017-10-25 | 2017-10-25 | A kind of rectangular lithium ion battery and production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108461666A true CN108461666A (en) | 2018-08-28 |
Family
ID=63220373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711008132.9A Pending CN108461666A (en) | 2017-10-25 | 2017-10-25 | A kind of rectangular lithium ion battery and production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108461666A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001110693A (en) * | 1999-10-08 | 2001-04-20 | Elna Co Ltd | Aluminum electrolytic capacitor and manufacturing method therefor |
| CN203536479U (en) * | 2013-11-22 | 2014-04-09 | 惠州市恒泰科技有限公司 | Lithium ion battery |
| CN105206773A (en) * | 2015-09-24 | 2015-12-30 | 浙江谷神能源科技股份有限公司 | Lithium-ion battery safety valve and machining method thereof |
| CN205845714U (en) * | 2016-01-13 | 2016-12-28 | 湖南艾华集团股份有限公司 | A kind of square electric container |
| CN107275090A (en) * | 2017-08-15 | 2017-10-20 | 湖南艾华集团股份有限公司 | A kind of square electric container |
-
2017
- 2017-10-25 CN CN201711008132.9A patent/CN108461666A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001110693A (en) * | 1999-10-08 | 2001-04-20 | Elna Co Ltd | Aluminum electrolytic capacitor and manufacturing method therefor |
| CN203536479U (en) * | 2013-11-22 | 2014-04-09 | 惠州市恒泰科技有限公司 | Lithium ion battery |
| CN105206773A (en) * | 2015-09-24 | 2015-12-30 | 浙江谷神能源科技股份有限公司 | Lithium-ion battery safety valve and machining method thereof |
| CN205845714U (en) * | 2016-01-13 | 2016-12-28 | 湖南艾华集团股份有限公司 | A kind of square electric container |
| CN107275090A (en) * | 2017-08-15 | 2017-10-20 | 湖南艾华集团股份有限公司 | A kind of square electric container |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180828 |
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