CN104795516B - Battery anode/cathode cover board production method and battery anode/cathode cover board - Google Patents
Battery anode/cathode cover board production method and battery anode/cathode cover board Download PDFInfo
- Publication number
- CN104795516B CN104795516B CN201510178236.9A CN201510178236A CN104795516B CN 104795516 B CN104795516 B CN 104795516B CN 201510178236 A CN201510178236 A CN 201510178236A CN 104795516 B CN104795516 B CN 104795516B
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- Prior art keywords
- copper fitting
- copper
- fitting
- cover plate
- battery positive
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 238
- 229910052802 copper Inorganic materials 0.000 claims abstract description 237
- 239000010949 copper Substances 0.000 claims abstract description 237
- 238000003466 welding Methods 0.000 claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- 229910000679 solder Inorganic materials 0.000 claims description 46
- 230000003746 surface roughness Effects 0.000 claims description 16
- 229910000906 Bronze Inorganic materials 0.000 claims description 8
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000010974 bronze Substances 0.000 claims description 8
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 230000004323 axial length Effects 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910001334 3003 aluminium alloy Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 3
- ALKZAGKDWUSJED-UHFFFAOYSA-N dinuclear copper ion Chemical compound [Cu].[Cu] ALKZAGKDWUSJED-UHFFFAOYSA-N 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 238000009987 spinning Methods 0.000 description 7
- 238000007514 turning Methods 0.000 description 5
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000630 rising effect 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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to a battery anode/cathode cover board production method. A copper work piece is fixed in a mounting hole of an insulating ring through copper-copper friction welding; enough temperature is generated during welding by reasonably selecting and arranging technological parameters; the metal on the welding surfaces of the two copper work pieces is subjected to plastic deformation, and such defects as bubbles and cracks are not generated at the welding seam part; meanwhile, the welding surfaces of the two copper work pieces are subjected to rotating friction under the action of pressure, so that the two copper work pieces are subjected to deformation in the axial direction, the radial size of the welding surfaces and the area near the welding surfaces is expanded and enlarged, the outer walls of the two copper work pieces are clung to the insulating ring, the insulating ring and an aluminum work piece are fit together tightly, the bonding strength among the components of the battery anode/cathode cover board is improved, and the service life is prolonged; besides, the cross section of the copper work piece is I-shaped, and the two ends of the copper work piece are both larger than the diameter of the mounting hole, so that the copper work piece can be prevented form being squeezed out from one side in the axial direction of the mounting hole.
Description
Technical field
The present invention relates to the production method and battery positive/negative cover plate of a kind of battery positive/negative cover plate, belong to spin friction
Weldering production field.
Background technology
There is cylindrical metal shell more high-capacity lithium battery, positive pole cover plate is respectively set in columned two bottom surfaces and is born
Polar cap plate.At present, the structure of existing positive/negative cover plate is as shown in figure 1, including circular alumiaum article 1 of the centre with through hole, lead to
Dead ring 2, the upper surface of the circular alumiaum article 1 of upper surface laminating of dead ring 2, the lower surface laminating of dead ring 2 are arranged with hole
The lower surface of circular alumiaum article 1, the copper fitting 3 with stub end 31 and small head end 32 passes through dead ring 2 and through hole 11, and respectively
It is fastened on dead ring 2 and coordinates with circular alumiaum article 1, wherein, jump-ring slot 321, jump-ring slot are molded on the side wall of small head end 32
Jump rings 4 are set in 321 so that copper fitting 3 is fixed in dead ring 2 and through hole, or can also change jump ring 4 into riveting pad,
So as to be fixedly connected circular alumiaum article 1 with copper fitting 3 by jump ring 4 or riveting pad, and insulated.
However, when being fixed by jump ring, the riveting mechanical means such as pad, exist because jump ring, riveting pad and shadow
Product design is rung, or the problem of fatigue fracture is produced because jump ring, riveting pad site are used for a long time.
Therefore, how to provide a kind of well-set battery positive/negative cover plate is the skill not solved also in the prior art
Art problem.
The content of the invention
Therefore, the technical problems to be solved by the invention are to overcome battery positive/negative cover plate entirety of the prior art
The unstable technical problem of structure, so as to propose that one kind can make the battery firm production method of positive/negative covering plate structure.
In order to solve the above technical problems, a kind of production method of battery positive/negative cover plate of the invention, including following step
Suddenly：
Using plate like aluminium part, and through hole is processed on alumiaum article；
Card sets dead ring in through hole, and the upper surface that dead ring has mounting hole, dead ring abuts in the upper table of alumiaum article
On face, the lower surface of dead ring is abutted on the lower surface of alumiaum article；
Using two copper fittings, copper fitting have 0.5-1mm bigger than mounting hole internal diameter with cylindrical boss and diameter
More than the cylindrical base of cylindrical boss diameter, cylindrical boss and cylindrical base are coaxially disposed, circular cylindrical projection countertop
Surface roughness in Ra1.6-Ra6.3；
The cylindrical boss of the first copper fitting is extend into dead ring and is together fixed with alumiaum article, the second copper fitting is consolidated
It is fixed that the circular cylindrical projection countertop alignment contact of the first copper fitting and the second copper fitting is formed into solder side on the spinning device, weld
Junction is located at the centre position of dead ring, and applies towards the second copper fitting direction and vertical with solder side to the first copper fitting
Power or power component, the component of the power or power is produced 150-300KN to the solder side of the first copper fitting and the second copper fitting
Pressure；
The pressure suffered by solder side is kept, and the second copper fitting is rotated relative to the first copper fitting, revolution is 600-
1000 revs/min, the second copper fitting is set to stop the rotation after 3-5s, the amount of being axially retracted is 1-2mm, by the first copper fitting and second
Copper fitting welds together；
The first copper fitting and the second copper fitting that will be welded together are cooled to room temperature, 200-300 DEG C/minute of cooling rate
Clock；
The first copper fitting for welding together and the second copper fitting and alumiaum article are machined out, with needed for being processed into
Shape, obtains battery positive/negative cover plate.
The production method of battery positive/negative cover plate of the invention, also including the circle to the first copper fitting and the second copper fitting
The step of cylindrical end tangs top surface is surface-treated to control the first copper fitting and the second copper fitting surface roughness.
The production method of battery positive/negative cover plate of the invention, the first copper fitting and the second copper fitting are red copper, alumiaum article
It is 1060 aluminium or 3003 aluminium, dead ring is PTFE.
The production method of battery positive/negative cover plate of the invention, after the second copper fitting stops the rotation, continues to solder side
Above-mentioned pressure is kept, the dwell time is no less than 10s.
The production method of battery positive/negative cover plate of the invention, the first copper fitting circular cylindrical projection countertop of selection has
Coniform groove or cone-shaped bulge, the circular cylindrical projection countertop of the second copper fitting of selection have the cylinder with the first copper fitting
Cone-shaped bulge or coniform groove that shape boss top surface coordinates, cone-shaped bulge are 1- with the axial length of coniform groove
2mm, by the cone-shaped bulge on the vertical end face of the second copper fitting or coniform groove and first before the second copper fitting of rotation
Coniform groove or cone-shaped bulge alignment on the vertical end face of copper fitting.
The production method of battery positive/negative cover plate of the invention, the bus of cone-shaped bulge and the axial direction of cone-shaped bulge
Angle it is bigger 3-5 ° than the axial angle of bus and the coniform groove of coniform groove.
The production method of battery positive/negative cover plate of the invention, the bus of cone-shaped bulge and the axial direction of cone-shaped bulge
Angle be 83-88 °.
The production method of battery positive/negative cover plate of the invention, the axial direction of the bus of coniform groove and coniform groove
Angle be 80-83 °.
The present invention also provides a kind of battery positive/negative cover plate, is given birth to using the production method of above-mentioned battery positive/negative cover plate
Product is obtained.
Above-mentioned technical proposal of the invention has advantages below compared to existing technology；
(1) production method of battery positive/negative cover plate of the invention, the cylindrical boss of copper fitting is arranged to than insulation
The big 0.5-1mm of mounting hole internal diameter of ring, makes cylindrical boss cross tight fit with mounting hole, improves dead ring and copper fitting and aluminum
The tight ness rating of part；And by reasonably selecting to set surface roughness, pressure, revolution, the amount of being axially retracted, cooling rate, table
Surface roughness, pressure, revolution and the amount of being axially retracted to cooperate and produce enough temperature when ensure that welding, makes the first copper
Metal at part and the second copper fitting solder side produces plastic deformation, and commissure does not produce the defects such as bubble, crackle.Together
When, because rotating friction under the effect of the pressure at the first copper fitting and the second copper fitting solder side, thus, the first copper
Part and the second copper fitting are deformed upon in the axial direction, and the radial dimension expansion of solder side and its near zone becomes big, makes the first bronze medal
The outer wall of product and the second copper fitting is close to dead ring, and makes together with dead ring also fits tightly on alumiaum article, to improve
Bonding strength between each part of battery positive/negative cover plate, improves service life.The section of copper fitting forms " work " word simultaneously
Shape, the diameter of the two ends of copper fitting than mounting hole is big, can prevent copper piece from mounting hole axial direction side extrusion.
(2) production method of battery positive/negative cover plate of the invention, circular cone is processed by the vertical end face of the first copper fitting
Shape groove or cone-shaped bulge, and the second copper fitting vertical end face process and the first copper fitting vertical end face coordinate
Cone-shaped bulge or coniform groove, it is 1-2mm that cone-shaped bulge is equal with the axial length of coniform groove.Cone-shaped bulge
Bus and cone-shaped bulge axial angle than the bus of coniform groove and the axial big 3- of angle of coniform groove
5 °, the bus of cone-shaped bulge and the axial angle of cone-shaped bulge are 83-88 °, the bus of coniform groove with it is coniform
The axial angle of groove is 80-83 °, and during welding, cone-shaped bulge is aligned with coniform recess axis.On the one hand, by circle
Taper is raised with coniform groove aligned fit, is the offer positioning of welding the first two copper fitting, on the other hand, in welding two
The solder bond face of conical surface is formed between individual copper fitting, bonded area is improve, weld strength is improve.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, below according to specific embodiment of the invention and combine
Accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is a kind of structural representation of battery positive/negative cover plate of the prior art；
Fig. 2 is the top view of battery positive/negative cover plate of the invention；
Fig. 3 is the longitudinal section of battery positive/negative cover plate of the invention；
Fig. 4 is the structural representation of the first copper fitting/the second copper fitting of the invention.
Reference is expressed as in figure：1- alumiaum articles；2- dead rings；3- copper fittings；31- stub ends；The small head ends of 32-；
321- jump-ring slots；322- screws；33- end faces；34- the first copper fitting/the second copper fittings；341- cylindrical bosses；342- cylinders
Shape base；4- jump rings.
Specific embodiment
Technical scheme is described in detail below in conjunction with the accompanying drawings.
Embodiment 1
A kind of production method of battery positive/negative cover plate of the present embodiment, comprises the following steps：
S1：Using plate like aluminium part, and through hole is processed in alumiaum article, alumiaum article is 1060 aluminium；
S2：Card sets dead ring in through hole, and the upper surface that dead ring has mounting hole, dead ring abuts in the upper of alumiaum article
On surface, the lower surface of dead ring is abutted on the lower surface of alumiaum article；Dead ring is made up of PTFE；
S3：Using two copper fittings, copper fitting have 0.5mm bigger than mounting hole internal diameter with cylindrical boss and diameter
More than the cylindrical base 342 of the diameter of cylindrical boss 341, cylindrical boss 341 and cylindrical base 342 are coaxially disposed, circle
The surface roughness of the top surface of cylindrical end tangs 341 is in Ra1.6, copper fitting red copper；
S4：The cylindrical boss of the first copper fitting is extend into dead ring and is together fixed with alumiaum article, by the second copper
Part is fixed on the spinning device, and the circular cylindrical projection countertop alignment contact of the first copper fitting and the second copper fitting is formed into welding
Face, solder side be located at dead ring centre position, and to the first copper fitting apply towards the second copper fitting direction and with welding
The component of the vertical power in face or power, makes the component of the power or power produce the solder side of the first copper fitting and the second copper fitting
The pressure of 150KN；
S5：The pressure suffered by solder side is kept, and the second copper fitting is rotated relative to the first copper fitting, revolution is 600
Rev/min, the second copper fitting is stopped the rotation after 3s, the amount of being axially retracted is 1mm, and the first copper fitting and the second copper fitting are welded
It is connected together；
S6：The first copper fitting for welding together and the second copper fitting and alumiaum article are machined out, to be processed into
Required shape, obtains battery positive/negative cover plate.
Embodiment 2
A kind of production method of battery positive/negative cover plate of the present embodiment, comprises the following steps：
S1：Using plate like aluminium part, and through hole is processed in alumiaum article, alumiaum article is 3003 aluminium；
S2：Card sets dead ring in through hole, and the upper surface that dead ring has mounting hole, dead ring abuts in the upper of alumiaum article
On surface, the lower surface of dead ring is abutted on the lower surface of alumiaum article；Dead ring is made up of PTFE；
S3：Using two copper fittings, copper fitting have 0.8mm bigger than mounting hole internal diameter with the He of cylindrical boss 341
With diameter greater than the cylindrical base 342 of the diameter of cylindrical boss 341, cylindrical boss 341 and cylindrical base 342 coaxially set
Put, the surface roughness of the top surface of cylindrical boss 341 is in Ra4.6, copper fitting red copper；
S4：The cylindrical boss 341 of the first copper fitting is extend into dead ring and is together fixed with alumiaum article, by the second bronze medal
Product is fixed on the spinning device, and the top surface of the cylindrical boss 341 alignment contact of the first copper fitting and the second copper fitting is formed
Solder side, solder side be located at dead ring centre position, and to the first copper fitting apply towards the second copper fitting direction and with
The component of the vertical power of solder side or power, makes the component of the power or power produce the solder side of the first copper fitting and the second copper fitting
The pressure of 200KN；
S5：The pressure suffered by solder side is kept, and the second copper fitting is rotated relative to the first copper fitting, revolution is 800
Rev/min, the second copper fitting is stopped the rotation after 4s, the amount of being axially retracted is 1.5mm, by the first copper fitting and the second copper fitting
Weld together；
S6：The first copper fitting for welding together and the second copper fitting and alumiaum article are machined out, to be processed into
Required shape, obtains battery positive/negative cover plate.
Embodiment 3
A kind of production method of battery positive/negative cover plate of the present embodiment, comprises the following steps：
S1：Using plate like aluminium part, and through hole is processed in alumiaum article, alumiaum article is 3003 aluminium；
S2：Card sets dead ring in through hole, and the upper surface that dead ring has mounting hole, dead ring abuts in the upper of alumiaum article
On surface, the lower surface of dead ring is abutted on the lower surface of alumiaum article；Dead ring is made up of PTFE；
S3：Using two copper fittings, copper fitting have 1mm bigger than mounting hole internal diameter with cylindrical boss 341 and straight
Footpath is more than the cylindrical base 342 of the diameter of cylindrical boss 341, and cylindrical boss 341 and cylindrical base 342 are coaxially disposed,
The surface roughness of the top surface of cylindrical boss 341 is in Ra6.3, copper fitting red copper；
S4：The cylindrical boss 341 of the first copper fitting is extend into dead ring and is together fixed with alumiaum article, by the second bronze medal
Product is fixed on the spinning device, and the top surface of the cylindrical boss 341 alignment contact of the first copper fitting and the second copper fitting is formed
Solder side, solder side be located at dead ring centre position, and to the first copper fitting apply towards the second copper fitting direction and with
The component of the vertical power of solder side or power, makes the component of the power or power produce the solder side of the first copper fitting and the second copper fitting
The pressure of 300KN；
S5：The pressure suffered by solder side is kept, and the second copper fitting is rotated relative to the first copper fitting, revolution is 1000
Rev/min, the second copper fitting is stopped the rotation after 5s, the amount of being axially retracted is 2mm, and the first copper fitting and the second copper fitting are welded
It is connected together：
S6：The first copper fitting for welding together and the second copper fitting and alumiaum article are machined out, to be processed into
Required shape, obtains battery positive/negative cover plate.
The production method of the battery positive/negative cover plate in embodiment 1-3, the cylindrical boss 341 of copper fitting is arranged to
Than the big 0.5-1mm of mounting hole internal diameter of dead ring, cylindrical boss 341 is crossed tight fit with mounting hole, improve dead ring and copper
The tight ness rating of product and alumiaum article；And by reasonably selecting to set surface roughness, pressure, revolution, the amount of being axially retracted, drop
Warm speed, surface roughness, pressure, revolution and the amount of being axially retracted to cooperate and produce enough temperature when ensure that welding,
The metal at the first copper fitting and the second copper fitting solder side is set to produce plastic deformation, and commissure does not produce bubble, crackle
Etc. defect.Meanwhile, because rotating friction under the effect of the pressure at the first copper fitting and the second copper fitting solder side, because
And, the first copper fitting and the second copper fitting are deformed upon in the axial direction, and the radial dimension expansion of solder side and its near zone becomes
Greatly, the outer wall of the first copper fitting and the second copper fitting is close to dead ring, and dead ring is also tightly fitted with alumiaum article
Together, the bonding strength between each part of battery positive/negative cover plate is improve, service life is improved.Formed weld simultaneously after
The section of copper fitting form I-shaped, the diameter of two end faces 33 of copper fitting than mounting hole is big, can prevent copper fitting
From mounting hole axial direction side extrusion.
Embodiment 4
A kind of production method of battery positive/negative cover plate of the present embodiment, comprises the following steps：
S1：Using plate like aluminium part, and through hole is processed in alumiaum article, alumiaum article is 1060 aluminium；
S2：Card sets dead ring in through hole, and the upper surface that dead ring has mounting hole, dead ring abuts in the upper of alumiaum article
On surface, the lower surface of dead ring is abutted on the lower surface of alumiaum article；Dead ring is made up of PTFE；
S3：Using two copper fittings, copper fitting have 0.5mm bigger than mounting hole internal diameter with the He of cylindrical boss 341
With diameter greater than the cylindrical base 342 of the diameter of cylindrical boss 341, cylindrical boss 341 and cylindrical base 342 coaxially set
Put, the surface roughness of the top surface of cylindrical boss 341 is in Ra1.6, copper fitting red copper；And in the cylindrical boss of the first copper fitting
341 top surfaces process coniform groove, and the cylinder with the first copper fitting is processed in the top surface of cylindrical boss 341 of the second copper fitting
The cone-shaped bulge that the top surface of shape boss 341 coordinates, cone-shaped bulge is 1mm with the axial length of coniform groove, coniform convex
The axial angle of the bus and the cone-shaped bulge that rise is 83 °, the axial folder of the bus of coniform groove and coniform groove
Angle is 80 °；
S4；The cylindrical boss 341 of the first copper fitting is extend into dead ring and is together fixed with alumiaum article, by the second bronze medal
Product is fixed on the spinning device, and the top surface of the cylindrical boss 341 alignment contact of the first copper fitting and the second copper fitting is formed
Solder side, solder side be located at dead ring centre position, and to the first copper fitting apply towards the second copper fitting direction and with
The component of the vertical power of solder side or power, makes the component of the power or power produce the solder side of the first copper fitting and the second copper fitting
The pressure of 150KN；
S5；The pressure suffered by solder side is kept, and the second copper fitting is rotated relative to the first copper fitting, revolution is 600
Rev/min, the second copper fitting is stopped the rotation after 3s, the amount of being axially retracted is 1mm, and the first copper fitting and the second copper fitting are welded
It is connected together；
S6；The first copper fitting for welding together and the second copper fitting and alumiaum article are machined out, to be processed into
Required shape, obtains battery positive/negative cover plate.
Embodiment 5
A kind of production method of battery positive/negative cover plate of the present embodiment, comprises the following steps：
S1；Using plate like aluminium part, and through hole is processed in alumiaum article, alumiaum article is 1060 aluminium；
S2；Card sets dead ring in through hole, and the upper surface that dead ring has mounting hole, dead ring abuts in the upper of alumiaum article
On surface, the lower surface of dead ring is abutted on the lower surface of alumiaum article；Dead ring is made up of PTFE；
S3；Using two copper fittings, copper fitting have 0.8mm bigger than mounting hole internal diameter with the He of cylindrical boss 341
With diameter greater than the cylindrical base 342 of the diameter of cylindrical boss 341, cylindrical boss 341 and cylindrical base 342 coaxially set
Put, the surface roughness of the top surface of cylindrical boss 341 is in Ra4.6, copper fitting red copper；And in the cylindrical boss of the first copper fitting
341 top surfaces process coniform groove, and the cylinder with the first copper fitting is processed in the top surface of cylindrical boss 341 of the second copper fitting
The cone-shaped bulge that the top surface of shape boss 341 coordinates, cone-shaped bulge is 1mm with the axial length of coniform groove, coniform convex
The axial angle of the bus and the cone-shaped bulge that rise is 86 °, the axial folder of the bus of coniform groove and coniform groove
Angle is 83 °；
S4：The cylindrical boss 341 of the first copper fitting is extend into dead ring and is together fixed with alumiaum article, by the second bronze medal
Product is fixed on the spinning device, and the top surface of the cylindrical boss 341 alignment contact of the first copper fitting and the second copper fitting is formed
Solder side, solder side be located at dead ring centre position, and to the first copper fitting apply towards the second copper fitting direction and with
The component of the vertical power of solder side or power, makes the component of the power or power produce the solder side of the first copper fitting and the second copper fitting
The pressure of 200KN；
S5：The pressure suffered by solder side is kept, and the second copper fitting is rotated relative to the first copper fitting, revolution is 800
Rev/min, the second copper fitting is stopped the rotation after 4s, the amount of being axially retracted is 1.5mm, by the first copper fitting and the second copper fitting
Weld together；
S6：The first copper fitting for welding together and the second copper fitting and alumiaum article are machined out, to be processed into
Required shape, obtains battery positive/negative cover plate.
Embodiment 6
A kind of production method of battery positive/negative cover plate of the present embodiment, comprises the following steps：
S1：Using plate like aluminium part, and through hole is processed in alumiaum article, alumiaum article is 1060 aluminium；
S2：Card sets dead ring in through hole, and the upper surface that dead ring has mounting hole, dead ring abuts in the upper of alumiaum article
On surface, the lower surface of dead ring is abutted on the lower surface of alumiaum article；Dead ring is made up of PTFE；
S3：Using two copper fittings, copper fitting have 1mm bigger than mounting hole internal diameter with cylindrical boss 341 and straight
Footpath is more than the cylindrical base 342 of the diameter of cylindrical boss 341, and cylindrical boss 341 and cylindrical base 342 are coaxially disposed,
The surface roughness of the top surface of cylindrical boss 341 is in Ra6.3, copper fitting red copper；And in the cylindrical boss 341 of the first copper fitting
Top surface processes coniform groove, and the cylinder with the first copper fitting is processed in the top surface of cylindrical boss 341 of the second copper fitting
The cone-shaped bulge that the top surface of boss 341 coordinates, cone-shaped bulge is 1mm, cone-shaped bulge with the axial length of coniform groove
The axial angle of bus and cone-shaped bulge be 88 °, the axial angle of the bus of coniform groove and coniform groove
It is 83 °；
S4：The cylindrical boss 341 of the first copper fitting is extend into dead ring and is together fixed with alumiaum article, by the second bronze medal
Product is fixed on the spinning device, and the top surface of the cylindrical boss 341 alignment contact of the first copper fitting and the second copper fitting is formed
Solder side, solder side be located at dead ring centre position, and to the first copper fitting apply towards the second copper fitting direction and with
The component of the vertical power of solder side or power, makes the component of the power or power produce the solder side of the first copper fitting and the second copper fitting
The pressure of 300KN；
S5：The pressure suffered by solder side is kept, and the second copper fitting is rotated relative to the first copper fitting, revolution is 1000
Rev/min, the second copper fitting is stopped the rotation after 5s, the amount of being axially retracted is 2mm, and the first copper fitting and the second copper fitting are welded
It is connected together；
S6：The first copper fitting for welding together and the second copper fitting and alumiaum article are machined out, to be processed into
Required shape, obtains battery positive/negative cover plate.
The production method of the battery positive/negative cover plate in embodiment 4-6 is the change in the method described in embodiment 1-3
Shape, possesses the advantage described in embodiment 1-3, and coniform groove or cone-shaped bulge are processed by the first copper fitting end face,
And the second copper fitting end face process with the first copper fitting end face coordinate cone-shaped bulge or coniform groove, it is coniform
It is raised it is equal with the axial length of coniform groove be 1-2mm.The bus of cone-shaped bulge and the axial folder of cone-shaped bulge
Angle is bigger 3-5 ° than the axial angle of bus and the coniform groove of coniform groove, and the bus of cone-shaped bulge is convex with coniform
The axial angle for rising is 83-88 °, and the bus of coniform groove is 80-83 ° with the axial angle of coniform groove, welding
When, cone-shaped bulge is aligned with coniform recess axis.On the one hand, by cone-shaped bulge and coniform groove aligned fit,
To weld the offer positioning of the first two copper fitting, on the other hand, the weldering of conical surface is formed between two copper fittings in welding
Faying face is connect, bonded area is improve, weld strength is improve.
It is pointed out that in embodiment 1-6, if the surface roughness of the end face of the copper fitting for using is not reaching to
Ra1.6-Ra6.3, then the end face to copper fitting be surface-treated, surface roughness is reached the control model of surface roughness
Enclose.In addition, after S6 steps, the net shape of copper fitting and alumiaum article can be controlled by machining, while also can be in copper
Screw 322 is molded on product, concrete shape is as shown in Figures 2 and 3.
Experimental example
Alumiaum article in the battery positive/negative cover plate that embodiment 1-6 is obtained is fixed, and applies what is gradually increased to copper fitting
Turning moment, when copper fitting is rotated relative to alumiaum article, records value now, can as the maximum of battery positive/negative cover plate
Turning moment is born, it is as shown in table 1 that maximum can bear turning moment.
Maximum can bear turning moment in the embodiment 1-6 of table 1
| Embodiment | Maximum can bear turning moment/NM |
| Embodiment 1 | 114 |
| Embodiment 2 | 123 |
| Embodiment 3 | 136 |
| Embodiment 4 | 147 |
| Embodiment 5 | 153 |
| Embodiment 6 | 151 |
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of implementation method.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need and unable to be exhaustive to all of implementation method.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (9)
1. a kind of production method of battery positive/negative cover plate, it is characterised in that comprise the following steps：
Using plate like aluminium part, and through hole is processed on alumiaum article；
Card sets dead ring in through hole, and the upper surface that dead ring has mounting hole, dead ring is abutted on the upper surface of alumiaum article,
The lower surface of dead ring is abutted on the lower surface of alumiaum article；
Using two copper fittings, copper fitting have 0.5-1mm bigger than mounting hole internal diameter with cylindrical boss and with diameter greater than
The cylindrical base of cylindrical boss diameter, cylindrical boss and cylindrical base are coaxially disposed, the table of circular cylindrical projection countertop
Surface roughness is in Ra1.6-Ra6.3；
The cylindrical boss of the first copper fitting is extend into dead ring and is together fixed with alumiaum article, the second copper fitting is fixed on
On whirligig, the circular cylindrical projection countertop alignment contact of the first copper fitting and the second copper fitting is formed into solder side, solder side
Positioned at the centre position of dead ring, and apply towards the second copper fitting direction and vertical with solder side power to the first copper fitting
Or the component of power, make the component of the power or power that the pressure of 150-300KN is produced to the solder side of the first copper fitting and the second copper fitting
Power；
The pressure suffered by solder side being kept, and the second copper fitting rotate relative to the first copper fitting, revolution is 600-1000 turns/
Point, the second copper fitting is stopped the rotation after 3-5s, the amount of being axially retracted is 1-2mm, by the first copper fitting and the second copper fitting
Weld together；
The first copper fitting and the second copper fitting that will be welded together are cooled to room temperature, 200-300 DEG C/min of cooling rate；
The first copper fitting for welding together and the second copper fitting and alumiaum article are machined out, to be processed into required shape
Shape, obtains battery positive/negative cover plate.
2. the production method of battery positive/negative cover plate according to claim 1, it is characterised in that also including to the first bronze medal
The circular cylindrical projection countertop of product and the second copper fitting is surface-treated to control the first copper fitting and the second copper fitting surface
The step of roughness.
3. the production method of battery positive/negative cover plate according to claim 1 and 2, it is characterised in that the first copper fitting and
Second copper fitting is red copper, and alumiaum article is 1060 aluminium or 3003 aluminium, and dead ring is PTFE.
4. the production method of battery positive/negative cover plate according to claim 1 and 2, it is characterised in that in the second copper fitting
After stopping the rotation, continue to keep solder side above-mentioned pressure, the dwell time is no less than 10s.
5. the production method of battery positive/negative cover plate according to claim 1 and 2, it is characterised in that the first bronze medal of selection
Product circular cylindrical projection countertop has coniform groove or cone-shaped bulge, the circular cylindrical projection countertop of the second copper fitting of selection
With cone-shaped bulge or coniform groove, cone-shaped bulge and circular cone that the circular cylindrical projection countertop with the first copper fitting coordinates
The axial length of shape groove is 1-2mm, will be coniform convex on the vertical end face of the second copper fitting before the second copper fitting of rotation
Rise or coniform groove is aligned with coniform groove or cone-shaped bulge on the vertical end face of the first copper fitting.
6. the production method of battery positive/negative cover plate according to claim 5, it is characterised in that the mother of cone-shaped bulge
The axial angle of line and cone-shaped bulge is bigger 3-5 ° than the axial angle of bus and the coniform groove of coniform groove.
7. the production method of battery positive/negative cover plate according to claim 5, it is characterised in that the mother of cone-shaped bulge
Line is 83-88 ° with the axial angle of cone-shaped bulge.
8. the production method of battery positive/negative cover plate according to claim 5, it is characterised in that the mother of coniform groove
Line is 80-83 ° with the axial angle of coniform groove.
9. a kind of battery positive/negative cover plate, it is characterised in that use the battery positive/negative as described in any in claim 1-8
The production method production of cover plate is obtained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510178236.9A CN104795516B (en) | 2015-04-15 | 2015-04-15 | Battery anode/cathode cover board production method and battery anode/cathode cover board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510178236.9A CN104795516B (en) | 2015-04-15 | 2015-04-15 | Battery anode/cathode cover board production method and battery anode/cathode cover board |
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| CN104795516B true CN104795516B (en) | 2017-05-24 |
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| CN109148936B (en) * | 2018-10-16 | 2024-03-29 | 苏州创能新能源实业有限公司 | High-torque power lithium battery |
| CN114227100B (en) * | 2021-11-23 | 2023-09-05 | 惠州锂威新能源科技有限公司 | Connection method of safety structure of soft package lithium ion battery |
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|---|---|---|---|---|
| CN1655389A (en) * | 2005-03-04 | 2005-08-17 | 北京中信国安盟固利新材料技术研究院有限公司 | High capacity lithium ion secondary battery with metal case |
| WO2007069820A1 (en) * | 2005-12-14 | 2007-06-21 | Lg Chem, Ltd. | Prismatic battery having electrolyte injection-hole capable of excellent sealing-disposition |
| CN102044640A (en) * | 2010-12-09 | 2011-05-04 | 唐建平 | Anti-explosion cover plate of lithium battery |
| CN102332545A (en) * | 2011-10-18 | 2012-01-25 | 无锡市金杨新型电源有限公司 | Polar plate type lithium battery cover plate |
| JP2013134869A (en) * | 2011-12-26 | 2013-07-08 | Toyota Motor Corp | Sealed battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6163783B2 (en) * | 2013-02-28 | 2017-07-19 | 三洋電機株式会社 | Rectangular secondary battery and manufacturing method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1655389A (en) * | 2005-03-04 | 2005-08-17 | 北京中信国安盟固利新材料技术研究院有限公司 | High capacity lithium ion secondary battery with metal case |
| WO2007069820A1 (en) * | 2005-12-14 | 2007-06-21 | Lg Chem, Ltd. | Prismatic battery having electrolyte injection-hole capable of excellent sealing-disposition |
| CN102044640A (en) * | 2010-12-09 | 2011-05-04 | 唐建平 | Anti-explosion cover plate of lithium battery |
| CN102332545A (en) * | 2011-10-18 | 2012-01-25 | 无锡市金杨新型电源有限公司 | Polar plate type lithium battery cover plate |
| JP2013134869A (en) * | 2011-12-26 | 2013-07-08 | Toyota Motor Corp | Sealed battery |
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