CN102136606A - Lithium ion battery preparation method - Google Patents
Lithium ion battery preparation method Download PDFInfo
- Publication number
- CN102136606A CN102136606A CN2010105648794A CN201010564879A CN102136606A CN 102136606 A CN102136606 A CN 102136606A CN 2010105648794 A CN2010105648794 A CN 2010105648794A CN 201010564879 A CN201010564879 A CN 201010564879A CN 102136606 A CN102136606 A CN 102136606A
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- Prior art keywords
- pole piece
- bar shaped
- paper tinsel
- electric core
- 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.)
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Links
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 41
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 58
- 229910052759 nickel Inorganic materials 0.000 claims description 29
- 238000003466 welding Methods 0.000 claims description 21
- 239000004411 aluminium Substances 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 238000007747 plating Methods 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 239000011149 active material Substances 0.000 claims description 12
- 239000007774 positive electrode material Substances 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 239000005030 aluminium foil Substances 0.000 claims description 9
- 239000011889 copper foil Substances 0.000 claims description 9
- 239000011258 core-shell material Substances 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000006258 conductive agent Substances 0.000 claims description 6
- 210000005069 ears Anatomy 0.000 claims description 4
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 229910000398 iron phosphate Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 7
- 238000007599 discharging Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005405 multipole Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000005955 Ferric phosphate Substances 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910015645 LiMn Inorganic materials 0.000 description 1
- 229910017704 MH-Ni Inorganic materials 0.000 description 1
- 229910017739 MH—Ni Inorganic materials 0.000 description 1
- 229910003307 Ni-Cd Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Secondary Cells (AREA)
Abstract
The invention discloses a lithium ion battery preparation method, which has a simple process, is easy to realize automation and has low production cost. Large current charging and discharging properties of the lithium ion batteries can be improved by a preparation process of a special pole piece structure, thus greatly improving the safety of large lithium ion batteries.
Description
Technical field
The present invention relates to the lithium ion battery field, relate in particular to a kind of big capacity, high security ferric phosphate lithium cell and preparation method thereof.
Background technology
Lithium ion battery from nineteen ninety in Japanese Sony company by after the successful development, just with its operating voltage height (3.7V), specific energy height (80 ~ 140wh/kg), self-discharge rate low (5%/moon), memory-less effect and advantage such as environmentally friendly and be subjected to the generally favor of battery circle.Study on Li-ion batteries using and industrialization upsurge have worldwide been started.Because lithium ion battery has catered to communication and the fast development of information technology demand for development to battery miniaturization, lightweight, energetic, users at different levels are also climbed up and up to its demand.Japanese lithium ion battery sales volume reached 1,200,000,000 dollars in 1996, had surpassed the sales volume of MH-Ni battery and Ni-Cd battery.By 2002, lithium ion battery occupied absolute dominant position in small-sized secondary batteries.
But the maximization of lithium ion battery is limited by manufacturing process and fail safe always.
Lithium ion battery adopts the thin type polarizing electrode, collector adopts aluminium foil and Copper Foil, small-capacity cells such as mobile phone, notebook computer battery adopt monopole ear can satisfy instructions for use, and band lug winding process is a main flow production technology of present lithium rechargeable battery industry; But for big capacity, high-power type lithium rechargeable battery, because operating current is bigger, must adopt multipole ear technology, if reel again behind the first soldering polar ear, because the existence of pole piece thickness deviation, the position of lug behind coiling is difficult to consistent overlapping, and the also intractable that is connected of multipole ear and conduction pole.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of lithium ion battery, be intended to solve present lithium rechargeable battery product and the existing manufacturing difficult problem of production technology and defective.
Technical scheme of the present invention is as follows:
A kind of preparation method of lithium ion battery may further comprise the steps:
Remove the oil stain of Copper Foil and aluminium foil surface;
Get iron phosphate powder and conductive agent, place the N-methyl pyrrolidone solution of adhesive, mixing forms positive electrode active materials;
Get Delanium and conductive agent, place the aqueous solution of active material, mixing forms negative active core-shell material;
The positive electrode active materials of mixing is coated on the aluminium foil of having handled, makes anode pole piece, reserve empty paper tinsel position of article one bar shaped that is not coated with positive electrode active materials and the empty paper tinsel of second bar shaped position in the both sides of anode pole piece;
The negative active core-shell material of mixing is coated on the Copper Foil of having handled, makes cathode pole piece, reserve the empty paper tinsel position of the 3rd bar shaped that is not coated with negative active core-shell material and the 4th the empty paper tinsel of bar shaped position in the both sides of cathode pole piece;
With anode pole piece and the cathode pole piece that anode pole piece is dried respectively with cathode pole piece, rolled, itemize becomes certain width;
With the columniform electric core of anode pole piece, cathode pole piece and membrane coil coiled, be formed centrally the receiving space that holds electrolyte in the electric core, the two ends of electric core are respectively positive terminal and negative pole end;
The positive terminal of aluminium conductive plate and electric core is connected with laser welding;
The negative pole end of nickel conductive plate and electric core is welded with laser welding or with electric resistance welding;
With an end slot rolling of nickel plating steel cylinder, the electric core that connects conductive plate is put into the nickel plating steel cylinder, the negative pole end of electric core is gone into earlier, again with the other end slot rolling of nickel plating steel cylinder;
With the electric resistance welding welding manner nickel lug on the nickel conductive plate and negative pole cap are linked together, the negative pole cap is pressed into, adopt mechanical sealing mode to seal;
The electrolyte that configures is injected in the receiving space of electric core;
Welding manner with Laser Welding links together aluminium pole ears on the aluminium conductive plate and anodal cap, and anodal cap is pressed into, and adopts mechanical sealing mode to seal;
Electric core is activated, changes into partial volume and handle.
Described lithium ion battery, wherein, the width at the empty paper tinsel of described article one bar shaped position is 0.20-1.0mm; The width at the empty paper tinsel of described second bar shaped position is 5.0-30mm.
Described lithium ion battery, wherein, the width at the empty paper tinsel of described the 3rd bar shaped position is 0.20-1.0mm; The width at the empty paper tinsel of described the 4th bar shaped position is 5.0-30mm.
Described lithium ion battery, wherein, the positive pole of described lithium ion battery block contains current blocking device and irreversible relief valve; The negative pole block contains the reversible pressure device that rushes down.
Described lithium ion battery, wherein, described positive electrode active materials is that LiFePO 4 is an active material.
Beneficial effect of the present invention: realized the manufacturing problem of large-scale lithium ion battery from technology, and technology is simple, easily is automated, production cost is low; Special pole piece structure preparation technology can improve the high rate during charging-discharging of lithium ion battery; Special mechanical enclosuring structure preparation technology, the fail safe that has greatly improved large-scale lithium ion battery.
Description of drawings
Fig. 1 is the schematic diagram of the anode pole piece of embodiment of the invention lithium ion battery;
Fig. 2 is an embodiment of the invention lithium ion battery slot rolling structural representation;
Fig. 3 is the structural representation after embodiment of the invention lithium ion battery seals;
Fig. 4 is the positive cover cap schematic diagram of embodiment of the invention lithium ion battery;
Fig. 5 is the negative cover cap schematic diagram of embodiment of the invention lithium ion battery;
Fig. 6 is the negative pole schematic bottom view of embodiment of the invention lithium ion battery.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, clear and definite, below develop simultaneously with reference to accompanying drawing that the present invention is described in more detail for embodiment.
Big capacity of the present invention, the high security column lithium ion battery, comprise anodal cap, the negative pole cap, the aluminium conductive plate, the nickel conductive plate, the nickel plating steel cylinder, the electricity core, anodal cap and negative pole cap are arranged on the two ends of nickel plating steel cylinder, be used for electric core is encapsulated in the nickel plating steel cylinder, the electricity core comprises anode pole piece, cathode pole piece, barrier film, electrolyte, diaphragm clip is between anode pole piece and cathode pole piece, anode pole piece, cathode pole piece and membrane coil are held the receiving space of electrolyte around formation, the two ends of electricity core are respectively positive terminal and negative pole end, the positive terminal of electricity core is connected with the aluminium conductive plate, the negative pole end of electricity core is connected with the nickel conductive plate, the nickel conductive plate is connected with the negative pole cap, and the aluminium conductive plate is connected with anodal cap.
Described anode pole piece and cathode pole piece adopt aluminium foil 2 and Copper Foil 6 to do collector respectively, as shown in Figure 1, be not coated with the empty paper tinsel position 8 of article one bar shaped and the empty paper tinsel of the second bar shaped position 9 of active material when coating active material coating in the reservation of the both sides of anode pole piece: the width at the empty paper tinsel of article one bar shaped position 8 is in the 0.20-1.0mm scope; The width at the empty paper tinsel of second bar shaped position 9 is in the 5.0-30mm scope.Accordingly, be not coated with the empty paper tinsel position of the 3rd bar shaped and the 4th the empty paper tinsel of bar shaped position of active material when coating active material coating in the reservation of the both sides of cathode pole piece: the width at the 3rd the empty paper tinsel of bar shaped position is in the 0.20-1.0mm scope; Article four, the width at the empty paper tinsel of bar shaped position is in the 5.0-30mm scope.
The effect of reserving the empty paper tinsel of article one bar shaped position 8 and the 3rd the empty paper tinsel of bar shaped position is to switch to coating and produce burr and material is fallen in the part when the rolling pole piece is cut, and improves battery security.Pole piece is cut the formation of burr and the high-hardness inorganic active material in the pole piece coating has much relations to the wearing and tearing of cutter, when adopting method of the present invention, only divide when switching to pure aluminium foil or Copper Foil when cutting pole piece, wearing and tearing to cutter are very slight, above-mentioned burr can reduce greatly, therefore the fail safe that can improve high capacity cell.
The effect of reserving the empty paper tinsel of second bar shaped position 9 and the 4th the empty paper tinsel of bar shaped position is to be convenient to many lugs that tape welding not connects and to realize that high efficiency reels.Be in order to be connected with drawing at this position behind anode pole piece, barrier film, the cathode pole piece continuous reeling with collector body, anode pole piece and cathode pole piece draw the both sides that lay respectively at utmost point group with collector body, the empty paper tinsel end of anode pole piece adopts laser welding to be connected with aluminium conductive plate 11, and aluminium conductive plate 11 adopts laser welding to be connected with anodal block.Empty paper tinsel end of cathode pole piece and nickel conductive plate 21 adopt laser welding, and nickel conductive plate 21 adopts electric resistance welding to be connected with the negative pole block.Simultaneously, adopting being connected of conductive plate and the empty paper tinsel of bar bar shaped position, also is best current collection mode, helps heavy-current discharge.
Shown in Fig. 2, Fig. 3, adopt mechanical slot rolling technology at the two ends of nickel plating steel pipe 7, anodal, negative pole block adopts mechanical sealing mode sealing, and nickel plating steel pipe 7 is not charged.The both-end machinery slot rolling of nickel plating steel pipe 7, machinery seal, and have realized the production of high capacity lithium ion battery, have also increased the fail safe of high capacity lithium ion battery.
As Fig. 4, Fig. 5 and shown in Figure 6, anodal block contains CID(current blocking device), the PTC(high power battery can not contain) and irreversible relief valve; The negative pole block contains the reversible pressure device that rushes down.So also improved the fail safe of high capacity cell greatly.
The present invention also aims to provide the preparation method of above-mentioned battery, this method low cost of manufacture, efficient height, and practical easy row also need not the connection in series-parallel combination between battery and are connected protective device, just can reach big capacity and high purpose of safety.The preparation method's of high capacity lithium ion battery of the present invention concrete preparation process is as follows:
(1), the processing of collector: remove the oil stain on Copper Foil 6 and aluminium foil 2 surfaces, the adhesion of enhanced activity material and foil;
(2), the preparation of positive electrode active materials: get iron phosphate powder and conductive agent, place the N-methyl pyrrolidone solution of adhesive, mixing forms copolymer;
(3), the preparation of negative active core-shell material: get Delanium and conductive agent, place the aqueous solution of active material, mixing forms copolymer;
(4), the coating of anode pole piece: the positive electrode active materials of mixing is coated on the aluminium foil of having handled 2, reserves the empty paper tinsel of the bar shaped position that is not coated with active material in the both sides of pole piece;
(5), the coating of cathode pole piece: the negative active core-shell material of mixing is coated on the Copper Foil of having handled 6, reserves the empty paper tinsel of the bar shaped position that is not coated with active material in the both sides of pole piece;
(6), the preparation of positive and negative plate: with the pole piece that positive and negative plate is dried, rolled, itemize becomes certain width;
(7), the coiling of electric core: on up-coiler, with positive and negative plate and the columniform electric core of membrane coil coiled.Be formed centrally the receiving space that holds electrolyte in the electricity core, electric core one end is positive terminal (end of anode pole piece), and the other end is negative pole end (end of cathode pole piece);
(8), being connected of conductive plate and electric core: will have aluminium pole ears 12 on the aluminium conductive plate 11(aluminium conductive plate) be connected with laser welding with the positive terminal of electric core.To on the nickel conductive plate 21(nickel conductive plate nickel lug 22 be arranged) and the negative pole end of electric core weld with laser welding or with electric resistance welding;
(9), the assembling of electric core: with nickel plating steel cylinder one end slot rolling, the electric core that connects conductive plate is put into the nickel plating steel cylinder, negative pole end is gone into earlier, again with other end slot rolling;
(10), negative pole end seals: with the resistance welded mode nickel lug and negative pole cap are linked together, cap is pressed into, adopt mechanical sealing mode, negative pole end is sealed;
(11), the fluid injection of electric core: the electrolyte that configures is injected in the electric core.
(12), positive terminal seals: the welding manner with Laser Welding links together aluminium pole ears and anodal cap, and cap is pressed into, and adopts mechanical sealing mode, and positive terminal is sealed;
(13), the forming and capacity dividing of electric core: electric core fluid injection, seal finish after, can activate, change into and partial volume.
Big capacity of the present invention, high security column lithium ion battery, it is the active material manufacturing that positive electrode active materials adopts LiFePO 4.
LiFePO 4 LiFe(M) PO
4(M is the Nb, the Mn that mix up, Co etc.) is PO in the positive electrode
4 3-Tetrahedron is highly stable, plays the support structure effect in charge and discharge process, especially overcharging, can not discharging highly active oxygen atom under the overheat condition, does not exist as LiCoO
2, LiNiCoMnO
2, LiMn
2O
4Deng the such vigorous oxidation of positive electrode, explosive reaction; Simultaneously because in charge and discharge process, LiFePO
4Take off the FePO under the lithium state fully
4Be orthohormbic structure all, cell parameter has only minor variations, and battery has excellent cycle performance.Therefore adopt LiFePO
4For the lithium ion battery of positive electrode can effectively be avoided explosive reaction, the potential performance requirement that satisfies present electric automobile or electronic toy to high power capacity, high-power drive pond.
The invention has the beneficial effects as follows:
1. realized the manufacturing problem of large-scale lithium ion battery from technology, and technology is simple, easily is automated, production cost is low;
2. special pole piece structure can improve the high rate during charging-discharging of lithium ion battery;
3. special mechanical enclosuring structure, the fail safe that has greatly improved large-scale lithium ion battery.
High capacity cell of the present invention refers in particular to rated capacity (1C) more than 5Ah, especially the above lithium rechargeable battery of 10Ah, comprise capacity type battery and high-power type battery in the high-capacity battery, the maximum discharge-rate of capacity type battery is below 2C, high-power type battery refers in particular to the high-power type battery of minimum discharge-rate more than 3C, according to concrete instructions for use, do suitable technology adjustment and both can produce the battery of pure high power capacity, also can produce high power capacity, the high-power battery that has both by method of the present invention.
Should be understood that application of the present invention is not limited to above-mentioned giving an example, for those of ordinary skills, can be improved according to the above description or conversion that all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (3)
1. the preparation method of a lithium ion battery is characterized in that, may further comprise the steps:
Remove the oil stain of Copper Foil and aluminium foil surface;
Get iron phosphate powder and conductive agent, place the N-methyl pyrrolidone solution of adhesive, mixing forms positive electrode active materials;
Get Delanium and conductive agent, place the aqueous solution of active material, mixing forms negative active core-shell material;
The positive electrode active materials of mixing is coated on the aluminium foil of having handled, makes anode pole piece, reserve empty paper tinsel position of article one bar shaped that is not coated with positive electrode active materials and the empty paper tinsel of second bar shaped position in the both sides of anode pole piece;
The negative active core-shell material of mixing is coated on the Copper Foil of having handled, makes cathode pole piece, reserve the empty paper tinsel position of the 3rd bar shaped that is not coated with negative active core-shell material and the 4th the empty paper tinsel of bar shaped position in the both sides of cathode pole piece;
With anode pole piece and the cathode pole piece that anode pole piece is dried respectively with cathode pole piece, rolled, itemize becomes certain width;
With the columniform electric core of anode pole piece, cathode pole piece and membrane coil coiled, be formed centrally the receiving space that holds electrolyte in the electric core, the two ends of electric core are respectively positive terminal and negative pole end;
The positive terminal of aluminium conductive plate and electric core is connected with laser welding;
The negative pole end of nickel conductive plate and electric core is welded with laser welding or with electric resistance welding;
With an end slot rolling of nickel plating steel cylinder, the electric core that connects conductive plate is put into the nickel plating steel cylinder, the negative pole end of electric core is gone into earlier, again with the other end slot rolling of nickel plating steel cylinder;
With the electric resistance welding welding manner nickel lug on the nickel conductive plate and negative pole cap are linked together, the negative pole cap is pressed into, adopt mechanical sealing mode to seal;
The electrolyte that configures is injected in the receiving space of electric core;
Welding manner with Laser Welding links together aluminium pole ears on the aluminium conductive plate and anodal block, and anodal cap is pressed into, and adopts mechanical sealing mode to seal;
Electric core is activated, changes into partial volume and handle.
2. preparation method of lithium ion battery according to claim 1 is characterized in that, the width at the empty paper tinsel of described article one bar shaped position is 0.20-1.0mm; The width at the empty paper tinsel of described second bar shaped position is 5.0-30mm.
3. preparation method of lithium ion battery according to claim 1 is characterized in that, the width at the empty paper tinsel of described the 3rd bar shaped position is 0.20-1.0mm; The width at the empty paper tinsel of described the 4th bar shaped position is 5.0-30mm.
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|---|---|---|---|
| CN2010105648794A CN102136606A (en) | 2010-11-30 | 2010-11-30 | Lithium ion battery preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105648794A CN102136606A (en) | 2010-11-30 | 2010-11-30 | Lithium ion battery preparation method |
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| CN102136606A true CN102136606A (en) | 2011-07-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161767A (en) * | 2015-08-06 | 2015-12-16 | 孙杰 | Lithium ion power battery and fabrication method and application thereof |
| CN107910461A (en) * | 2017-11-09 | 2018-04-13 | 北京卫蓝新能源科技有限公司 | A kind of secondary cell, encapsulating structure and its method for packing |
| CN109980265A (en) * | 2019-04-03 | 2019-07-05 | 江苏芯界新能源科技有限公司 | A kind of cylinder battery core assembly technology |
-
2010
- 2010-11-30 CN CN2010105648794A patent/CN102136606A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161767A (en) * | 2015-08-06 | 2015-12-16 | 孙杰 | Lithium ion power battery and fabrication method and application thereof |
| CN107910461A (en) * | 2017-11-09 | 2018-04-13 | 北京卫蓝新能源科技有限公司 | A kind of secondary cell, encapsulating structure and its method for packing |
| CN109980265A (en) * | 2019-04-03 | 2019-07-05 | 江苏芯界新能源科技有限公司 | A kind of cylinder battery core assembly technology |
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