CN1231981C - Square lithim cell casing and its making process - Google Patents
Square lithim cell casing and its making process Download PDFInfo
- Publication number
- CN1231981C CN1231981C CNB011091355A CN01109135A CN1231981C CN 1231981 C CN1231981 C CN 1231981C CN B011091355 A CNB011091355 A CN B011091355A CN 01109135 A CN01109135 A CN 01109135A CN 1231981 C CN1231981 C CN 1231981C
- Authority
- CN
- China
- Prior art keywords
- foil
- square
- stainless steel
- base plate
- casing
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 239000011888 foil Substances 0.000 claims abstract description 19
- 239000010935 stainless steel Substances 0.000 claims abstract description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 14
- 229910000679 solder Inorganic materials 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 238000005476 soldering Methods 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 3
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 238000000608 laser ablation Methods 0.000 claims description 2
- 238000005219 brazing Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 238000004880 explosion Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000011258 core-shell material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The present invention relates to a square casing of an electric core of a lithium battery with a braze welding structure and a manufacturing method of the square casing. The square casing is formed by that a stainless steel square joint and a stainless steel bottom plate are welded together; nickel-base alloy solder is used, the solder is arranged on the casing in the position close to a welding seam after preformed; a vacuum high-temperature brazing technique is used for welding the square joint and the bottom plate into a whole to form a square casing of the electric core, one end of the square casing is provided with holes; in order to manufacture the casing with rupture membranes, holes can be punched on the bottom plate in advance, and foil material is brazed together when the bottom plate is welded; laser notch processing can be carried out to the foil material so as to achieve the purpose of explosion under certain pressure.
Description
Technical field
The present invention relates to a kind of manufacture method of lithium battery, especially relate to the manufacture method of electric core square shell body of lithium cell soldering processes.
Background technology
Lithium battery is that the core of lithium battery then is electric core for communication products such as mobile phone provide the energy requisite important accessory, and electric core is made up of housing, cover plate, electrode, electrolyte etc.
Square casing generally is flat, shell dimension generally exists: thickness 3-15mm, length 30-80mm, width 20-50mm, at upper opening, adopt laser welded seal with cover plate in the future, housing tends to adopt the stainless steel manufacturing at present, is to adopt multi-pass stretch forming technology to make from the Stainless Steel Shell of external import, because draw ratio is big, for making a Stainless Steel Shell, will be through the stretching more than eight passages, this technological requirement has many covers shaping dies of corresponding passage, and production efficiency is low, die wear is very fast, the production cost height.
Chinese patent communique application number a kind of method of making electric core square shell body of lithium cell that has been 00124327.6 bibliographical information, this method adopts the drip molding vacuum brazing of two symmetries to form, stretch forming must be forced in two bights of the drip molding of this method, dimension precision requirement is higher, is difficult on the technology realize; In addition, the downhand position is adopted in soldering, requires solder fluidity to reduce, and for guaranteeing the air-tightness of weld seam, scolder must have certain thickness, and weld seam is longer in addition, and solder consumes more, so cost is higher.
Summary of the invention
The present invention be directed to above-mentioned deficiency, a kind of manufacture method of electric core square shell body of lithium cell is provided, particularly be welded with rupture pressure disc, safe to use housing.
The present invention is achieved in that
The manufacture method of electric core square shell body of lithium cell of the present invention by stainless steel square tube and base plate assembly welding and get, comprises the steps:
(1) on the stainless steel base plate in advance towards good circular hole, the location point in hole burn-on foil make the band rupture pressure disc base plate;
(2) place the nickel alloy solder at the edge of foil;
(3) then with base plate and square tube spot welding, go into soldering under vacuum 1040-1060 ℃ temperature together behind the stove, promptly get the housing that is welded with rupture pressure disc.
It is raw material that square tube of the present invention adopts stainless pipe, after pipe cutting machine cut-out, enlarging, is drawn into square tube on punch press, makes square tube after edger is cut edge; The stainless steel base plate is to form through punch process.On base plate, produce rupture pressure disc again, can on base plate, go out the hole in advance, on the hole, cover a slice foil, foil thickness 0.01-0.15mm, foil can be nickel foil, stainless steel foil or nickel-base alloy paper tinsel foil, with base plate behind spot welding location, place solder at the foil edge stand-by.After square tube cleaned up, the side lower limb was stained with the band solder within it.Be assembled together in special fixture with base plate then, adopt capacitor spot welding machine spot welding to be positioned at together, to guarantee less joint clearance of brazing.Also can square tube and base plate is earlier spot-welded together, solder powder and adhesive, solvent are coated in the commissure with the form of slip together.Dry fed to boiler soldering; soldering can be carried out in the vacuum high-temperature soldering oven; also can under argon shield, carry out high temperature brazing; the nickel-base alloy solder flows after reaching its liquidus temperature; joint filling under the capillary force effect; after insulation certain hour cooling, the commissure solder solidifies, and promptly obtains welded square electric core shell body after being chilled to low temperature and coming out of the stove.To being welded with the housing of rupture pressure disc, for reaching the purpose of explosion under the certain pressure, can carry out laser ablation to the housing foil material of postwelding and handle, for 0.03 thick foil, width of nick is controlled at 0.01-0.15mm and gets final product.
Adopt the lithium battery electric core housing of manufacturing of the present invention to have the following advantages; Housing is not owing to adopt multi-pass stretch forming technology, but adopts the normal temperature drawing fast that is shaped, so the production efficiency height, and the mould loss is slight, and die cost is lower; Compare with the technology of the housing soldering of two symmetries, brazed seam is shorter, and housing can weld on one's feet in addition, easily forms the brazed seam fillet, and the weld seam sealing property is easy to guarantee that solder consumption also significantly reduces that comprehensive production cost is low.The another one advantage is the rupture pressure disc of can directly burn-oning on housing, has improved the safety in utilization of electric core.
Embodiment
Embodiment 1:
The electric core shell body is of a size of: thickness 8.0mm, and long 47mm, wide 34mm can at first select the stainless steel tube of diameter 24.5mm for use by following method manufacturing, is cut into segment on pipe cutting machine; After enlarging, flattening, utilize stretching die to be shaped, with drip molding through the side cut cross cutting to otherwise length, make square tube.Little of the adhesive tape that adopts the Bni-2 solder powder to make then, the lower inside that is bonded at square tube with optical resin gum is dried stand-by near the commissure; Go out the aperture of diameter 3.5mm on the base plate in advance, the foil of diameter 6mm is covered on the aperture.At the periphery in hole stainless steel base plate that foil and 0.5mm is thick with condenser type spot welder spot welding location, being stained with little of tape welding material at weld edge puts into the vacuum high-temperature soldering oven with housing to be welded and bottom deck assembly and carries out soldering, 1040 ℃ of brazing temperatures, be incubated 8-20 minute, with the stove cooling, after coming out of the stove, room temperature promptly gets the square casing finished product that has rupture pressure disc then.
Embodiment 2:
Manufacture method is identical with enforcement 1, and the soldering temperature is 1060 ℃.
Claims (4)
1, the manufacture method of electric core square shell body of lithium cell is made together and is got by stainless steel square tube and base plate assembly welding, it is characterized in that comprising the steps:
(1) on the stainless steel base plate in advance towards good circular hole, make the base plate of rupture pressure disc at the location point in the hole foil of burn-oning;
(2) place the nickel alloy solder at the edge of foil;
(3) then with base plate and square tube spot welding, go into behind the stove under the vacuum together 1040-1060 ℃ temperature soldering, promptly get the housing that is welded with rupture pressure disc.
2, according to the manufacture method of the described housing of claim 1, it is characterized in that: described foil is nickel foil, stainless steel or nickel-base alloy, and thickness is 0.01-0.15mm.
3, the manufacture method of housing according to claim 2 is characterized in that: the thickness of described foil is the nickel foil of 0.03mm.
4, according to the manufacture method of the described housing of claim 1, it is characterized in that: the foil after the soldering adopts laser ablation to handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011091355A CN1231981C (en) | 2001-03-09 | 2001-03-09 | Square lithim cell casing and its making process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011091355A CN1231981C (en) | 2001-03-09 | 2001-03-09 | Square lithim cell casing and its making process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1374709A CN1374709A (en) | 2002-10-16 |
| CN1231981C true CN1231981C (en) | 2005-12-14 |
Family
ID=4657742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011091355A Expired - Fee Related CN1231981C (en) | 2001-03-09 | 2001-03-09 | Square lithim cell casing and its making process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1231981C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100391032C (en) * | 2004-05-14 | 2008-05-28 | 北京东皋膜技术有限公司 | Aluminium-casing lithium ion cell core with antiexplosion film |
| CN101508057B (en) * | 2009-03-20 | 2012-08-22 | 江苏奇能电池有限公司 | Battery laser welding method |
| CN101783399B (en) * | 2009-12-30 | 2013-06-05 | 天津三合意电子有限公司 | Battery cover anti-explosion membrane notching processing method |
| CN101800299A (en) * | 2010-04-13 | 2010-08-11 | 天津三合意电子有限公司 | Explosion-proof membrane on cover plate of power lithium ion battery electrode and welding method thereof |
| CN102233372A (en) * | 2010-04-23 | 2011-11-09 | 中山天贸电池有限公司 | Battery steel shell forming machine and steel shell forming method using same |
| CN105789504A (en) * | 2014-12-23 | 2016-07-20 | 比亚迪股份有限公司 | Battery tray, fabrication method thereof, battery pack and electromobile |
| CN105789501A (en) * | 2014-12-23 | 2016-07-20 | 比亚迪股份有限公司 | Battery pack body and preparation method thereof, battery pack and electric vehicle |
-
2001
- 2001-03-09 CN CNB011091355A patent/CN1231981C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1374709A (en) | 2002-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1231981C (en) | Square lithim cell casing and its making process | |
| CN109848660B (en) | Preparation method of active cooling structure | |
| JP2010505220A (en) | Battery case and battery | |
| CN105414384A (en) | Preparation method of metal egg tray interlayer structure | |
| CN100414742C (en) | Clamping cartridge polymer pole ear welding method | |
| CN114094054A (en) | Multi-tab battery cell tab folding process, multi-tab battery cell and multi-tab battery | |
| CN101769690B (en) | Modular stainless steel aluminum alloy radiator and manufacturing method thereof | |
| CN103500844A (en) | Cylindrical multi-lug lithium ion battery and preparation method thereof | |
| CN100505354C (en) | Integral welding method of thermo-electric generation module | |
| CN105428632A (en) | Preparation method for high-porosity silver electrode | |
| CN202028877U (en) | Cell laser welding device | |
| CN207146269U (en) | A kind of special heat conducting pipe of LED front headlight of motor vehicle | |
| CN204204946U (en) | Disc type aluminium-to-nickel lug | |
| CN105140429A (en) | Laminated lithium battery aluminum shell structure and manufacturing method thereof | |
| CN104976448A (en) | Compound connecting piece and method for manufacturing the same | |
| CN1231982C (en) | Lithium cell cover plate with explosion-proof membrane and its making process | |
| CN204991824U (en) | Aluminium changes non - aluminium metal arc ear | |
| CN217166863U (en) | End cover and pipeline assembly | |
| CN2743951Y (en) | Explosion-proof power capacitor | |
| CN202940204U (en) | Silver contact structure of contact system | |
| CN212884504U (en) | Sheet forming die for cooling pipeline | |
| CN114069091A (en) | Cooling structure suitable for new forms of energy battery electricity core | |
| CN201740440U (en) | Solder coating type aluminum flat tube used for automotive heat exchanger | |
| CN206301923U (en) | A kind of thin-walled stretches cavity body filter | |
| CN105140458A (en) | Manufacturing process for non-joint aluminum coated non-aluminum metal tab |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: BIKE BATTERY CO., LTD., SHENZHEN CITY Free format text: FORMER OWNER: JILIN PROVINE HUARUAN TECHNOLOGY CO., LTD. Effective date: 20040416 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20040416 Address after: Kwai Chung Town Zhenda industrial zone of Longgang District of Shenzhen City, Guangdong Province, ten, 518000 Applicant after: Shenzhen Bak Battery Co., Ltd. Address before: 2403, room 24, floor 11, union business center, No. 130061, Xi'an Road, Jilin, Changchun, Applicant before: Jilin Huaruan Technology Co., Ltd. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170602 Address after: 518119 Beek Industrial Zone, Kwai Chung street, Dapeng New District, Guangdong, Shenzhen Patentee after: SHENZHEN BAK BATTERY CO., LTD. Address before: Kwai Chung Town Zhenda industrial zone of Longgang District of Shenzhen City, Guangdong Province, ten, 518000 Patentee before: Shenzhen Bak Battery Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051214 Termination date: 20190309 |