CN104795516A - 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
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- CN104795516A CN104795516A CN201510178236.9A CN201510178236A CN104795516A CN 104795516 A CN104795516 A CN 104795516A CN 201510178236 A CN201510178236 A CN 201510178236A CN 104795516 A CN104795516 A CN 104795516A
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- copper fitting
- copper
- fitting
- cover plate
- battery positive
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 229910052802 copper Inorganic materials 0.000 claims abstract description 247
- 239000010949 copper Substances 0.000 claims abstract description 247
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 246
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- 229910000679 solder Inorganic materials 0.000 claims description 50
- 230000003746 surface roughness Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 13
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 238000009987 spinning Methods 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 4
- 238000004381 surface treatment Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 16
- 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
- 238000005516 engineering process Methods 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 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 a kind of production method and battery positive/negative cover plate of battery positive/negative cover plate, belong to spin friction weldering production field.
Background technology
High-capacity lithium battery has cylindrical metal shell more, respectively arranges positive pole cover plate and negative pole cover plate in columned two bottom surfaces.At present, the structure of existing positive/negative cover plate as shown in Figure 1, comprise the circular aluminum product 1 that centre has through hole, dead ring 2 is arranged with in through hole, the upper surface of the upper surface laminating circular aluminum product 1 of dead ring 2, the lower surface of the lower surface laminating circular aluminum product 1 of dead ring 2, there is the copper fitting 3 of stub end 31 and little head end 32 through dead ring 2 and through hole 11, and be fastened on respectively on dead ring 2 and coordinate with circular aluminum product 1, wherein, shaping jump-ring slot 321 on the sidewall of little head end 32, arranging jump ring 4 in jump-ring slot 321 is fixed in dead ring 2 and through hole to make copper fitting 3, or also can change jump ring 4 into riveted joint pad, thus by jump ring 4 or riveted joint pad, circular aluminum product 1 is fixedly connected with copper fitting 3, and insulate.
But, when being fixed by jump ring, mechanical means such as riveted joint pad etc., exist because jump ring, riveted joint pad and affect product design, or use for a long time and produce the problem of fatigue fracture due to jump ring, riveted joint pad site.
Therefore, a kind of well-set battery positive/negative cover plate how is provided to be the technical barrier also do not solved in prior art.
Summary of the invention
Therefore, technical problem to be solved by this invention is to overcome the unstable technical problem of battery positive/negative cover plate overall structure of the prior art, thus proposition one can make battery positive/negative covering plate structure firmly production method.
For solving the problems of the technologies described above, the production method of a kind of battery positive/negative cover plate of the present invention, comprises the following steps:
Adopt plate like aluminium part, and process through hole on alumiaum article;
In through hole, dead ring established by card, and dead ring has installing hole, and the upper surface of dead ring abuts on the upper surface of alumiaum article, and the lower surface of dead ring abuts on the lower surface of alumiaum article;
Adopt two copper fittings, what copper fitting had a 0.5-1mm larger than installing hole internal diameter has the cylindrical base that cylindrical boss and diameter be greater than cylindrical boss diameter, cylindrical boss and cylindrical base are coaxially arranged, and the surface roughness of circular cylindrical projection countertop is at Ra1.6-Ra6.3;
The cylindrical boss of the first copper fitting is extend in dead ring and together fixes with alumiaum article, second copper fitting is fixed on the spinning device, first copper fitting is aimed to contact with the circular cylindrical projection countertop of the second copper fitting and forms solder side, solder side is positioned at the centre position of dead ring, and to the first copper fitting apply towards the second copper fitting direction and the component of the power vertical with solder side or power, make the component of this power or power produce the pressure of 150-300KN to the solder side of the first copper fitting and the second copper fitting;
Keep the pressure suffered by solder side, and the second copper fitting is rotated relative to the first copper fitting, revolution is 600-1000 rev/min, makes the second copper fitting stop the rotation after 3-5s, axial indent is 1-2mm, the first copper fitting and the second copper fitting to be welded together;
The first copper fitting welded together and the second copper fitting are cooled to room temperature, cooling rate 200-300 DEG C/min;
Machine work is carried out to the first copper fitting welded together and the second copper fitting and alumiaum article, to be processed into required form, obtains battery positive/negative cover plate.
The production method of battery positive/negative cover plate of the present invention, also comprises and carries out surface treatment to control the step of the first copper fitting and the second copper fitting surface roughness to the circular cylindrical projection countertop of the first copper fitting and the second copper fitting.
The production method of battery positive/negative cover plate of the present invention, the first copper fitting and the second copper fitting are red copper, and alumiaum article is 1060 aluminium or 3003 aluminium, and dead ring is PTFE.
The production method of battery positive/negative cover plate of the present invention, after the second copper fitting stops the rotation, continue to keep above-mentioned pressure to solder side, the dwell time is no less than 10s.
The production method of battery positive/negative cover plate of the present invention, the the first copper fitting circular cylindrical projection countertop selected has coniform groove or cone-shaped bulge, the circular cylindrical projection countertop of the second copper fitting selected has the cone-shaped bulge or coniform groove that coordinate with the circular cylindrical projection countertop of the first copper fitting, the axial length of cone-shaped bulge and coniform groove is 1-2mm, the cone-shaped bulge on the vertical end face of the second copper fitting or coniform groove is aimed at the coniform groove on the vertical end face of the first copper fitting or cone-shaped bulge before rotating the second copper fitting.
The production method of battery positive/negative cover plate of the present invention, the angle of the bus of cone-shaped bulge and the axis of cone-shaped bulge 3-5 ° larger than the angle of the bus of coniform groove and the axis of coniform groove.
The production method of battery positive/negative cover plate of the present invention, the angle of the bus of cone-shaped bulge and the axis of cone-shaped bulge is 83-88 °.
The production method of battery positive/negative cover plate of the present invention, the angle of the bus of coniform groove and the axis of coniform groove is 80-83 °.
The present invention also provides a kind of battery positive/negative cover plate, uses the production method of above-mentioned battery positive/negative cover plate to produce and obtains.
Technique scheme of the present invention has the following advantages compared to existing technology;
(1) production method of battery positive/negative cover plate of the present invention, the cylindrical boss of copper fitting is arranged to 0.5-1mm larger than the installing hole internal diameter of dead ring, make cylindrical boss and installing hole cross tight fit, improve the tightness of dead ring and copper fitting and alumiaum article; And by reasonably selecting to arrange surface roughness, pressure, revolution, axial indent, cooling rate, surface roughness, pressure, revolution and axial indent cooperatively interact when ensure that welding and produce enough temperature, make the metal at the first copper fitting and the second copper fitting solder side place produce plastic deformation, and commissure does not produce the defect such as bubble, crackle.Simultaneously, first copper fitting and the second copper fitting solder side place are because rotate friction under the effect of the pressure, thus, there is deformation in the axial direction in the first copper fitting and the second copper fitting, the radial dimension of solder side and near zone thereof expands and becomes large, makes the outer wall of the first copper fitting and the second copper fitting be close to dead ring, and dead ring and alumiaum article are also fit together tightly, bonding strength between each parts that improve battery positive/negative cover plate, improves useful life.The cross section of copper fitting forms " work " font simultaneously, and the two ends of copper fitting are all large than the diameter of installing hole, can stop copper piece and extrude from the axial side of installing hole.
(2) production method of battery positive/negative cover plate of the present invention, by processing coniform groove or cone-shaped bulge at the vertical end face of the first copper fitting, and the cone-shaped bulge or coniform groove that coordinate with the vertical end face of the first copper fitting is processed at the vertical end face of the second copper fitting, cone-shaped bulge is equal with the axial length of coniform groove is 1-2mm.The angle of the bus of cone-shaped bulge and the axis of cone-shaped bulge 3-5 ° larger than the angle of the bus of coniform groove and the axis of coniform groove, the angle of the bus of cone-shaped bulge and the axis of cone-shaped bulge is 83-88 °, the angle of the bus of coniform groove and the axis of coniform groove is 80-83 °, during welding, cone-shaped bulge is aimed at coniform recess axis.On the one hand, coordinated with coniform groove alignment by cone-shaped bulge, provide location for welding the first two copper fitting, on the other hand, forming the solder bond face of conical surface when welding between two copper fittings, improve bonded area, improve weld strength.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of a kind of battery positive/negative cover plate of the prior art;
Fig. 2 is the vertical view of battery positive/negative cover plate of the present invention;
Fig. 3 is the longitudinal section of battery positive/negative cover plate of the present invention;
Fig. 4 is the structural representation of the first copper fitting/the second copper fitting of the present invention.
In figure, Reference numeral is expressed as: 1-alumiaum article; 2-dead ring; 3-copper fitting; 31-stub end; The little head end of 32-; 321-jump-ring slot; 322-screw; 33-end face; 34-first copper fitting/the second copper fitting; 341-cylindrical boss; 342-cylindrical base; 4-jump ring.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail.
Embodiment 1
The production method of a kind of battery positive/negative of the present embodiment cover plate, comprises the following steps:
S1: adopt plate like aluminium part, and process through hole at alumiaum article, alumiaum article is 1060 aluminium;
S2: dead ring established by card in through hole, and dead ring has installing hole, and the upper surface of dead ring abuts on the upper surface of alumiaum article, and the lower surface of dead ring abuts on the lower surface of alumiaum article; Dead ring is made up of PTFE;
S3: adopt two copper fittings, what copper fitting had a 0.5mm larger than installing hole internal diameter has the cylindrical base 342 that cylindrical boss and diameter be greater than cylindrical boss 341 diameter, cylindrical boss 341 and cylindrical base 342 are coaxially arranged, the surface roughness of cylindrical boss 341 end face at Ra1.6, copper fitting red copper;
S4: the cylindrical boss of the first copper fitting is extend in dead ring and together fixes with alumiaum article, second copper fitting is fixed on the spinning device, first copper fitting is aimed to contact with the circular cylindrical projection countertop of the second copper fitting and forms solder side, solder side is positioned at the centre position of dead ring, and to the first copper fitting apply towards the second copper fitting direction and the component of the power vertical with solder side or power, make the component of this power or power produce the pressure of 150KN to the solder side of the first copper fitting and the second copper fitting;
S5: keep the pressure suffered by solder side, and the second copper fitting is rotated relative to the first copper fitting, revolution is 600 revs/min, makes the second copper fitting stop the rotation after 3s, and axial indent is 1mm, the first copper fitting and the second copper fitting to be welded together;
S6: machine work is carried out to the first copper fitting welded together and the second copper fitting and alumiaum article, to be processed into required form, obtains battery positive/negative cover plate.
Embodiment 2
The production method of a kind of battery positive/negative of the present embodiment cover plate, comprises the following steps:
S1: adopt plate like aluminium part, and process through hole at alumiaum article, alumiaum article is 3003 aluminium;
S2: dead ring established by card in through hole, and dead ring has installing hole, and the upper surface of dead ring abuts on the upper surface of alumiaum article, and the lower surface of dead ring abuts on the lower surface of alumiaum article; Dead ring is made up of PTFE;
S3: adopt two copper fittings, what copper fitting had a 0.8mm larger than installing hole internal diameter has the cylindrical base 342 that cylindrical boss 341 and diameter be greater than cylindrical boss 341 diameter, cylindrical boss 341 and cylindrical base 342 are coaxially arranged, the surface roughness of cylindrical boss 341 end face at Ra4.6, copper fitting red copper;
S4: the cylindrical boss 341 of the first copper fitting is extend in dead ring and together fixes with alumiaum article, second copper fitting is fixed on the spinning device, first copper fitting is aimed to contact with cylindrical boss 341 end face of the second copper fitting and forms solder side, solder side is positioned at the centre position of dead ring, and to the first copper fitting apply towards the second copper fitting direction and the component of the power vertical with solder side or power, make the component of this power or power produce the pressure of 200KN to the solder side of the first copper fitting and the second copper fitting;
S5: keep the pressure suffered by solder side, and the second copper fitting is rotated relative to the first copper fitting, revolution is 800 revs/min, makes the second copper fitting stop the rotation after 4s, and axial indent is 1.5mm, the first copper fitting and the second copper fitting to be welded together;
S6: machine work is carried out to the first copper fitting welded together and the second copper fitting and alumiaum article, to be processed into required form, obtains battery positive/negative cover plate.
Embodiment 3
The production method of a kind of battery positive/negative of the present embodiment cover plate, comprises the following steps:
S1: adopt plate like aluminium part, and process through hole at alumiaum article, alumiaum article is 3003 aluminium;
S2: dead ring established by card in through hole, and dead ring has installing hole, and the upper surface of dead ring abuts on the upper surface of alumiaum article, and the lower surface of dead ring abuts on the lower surface of alumiaum article; Dead ring is made up of PTFE;
S3: adopt two copper fittings, what copper fitting had a 1mm larger than installing hole internal diameter has the cylindrical base 342 that cylindrical boss 341 and diameter be greater than cylindrical boss 341 diameter, cylindrical boss 341 and cylindrical base 342 are coaxially arranged, the surface roughness of cylindrical boss 341 end face at Ra6.3, copper fitting red copper;
S4: the cylindrical boss 341 of the first copper fitting is extend in dead ring and together fixes with alumiaum article, second copper fitting is fixed on the spinning device, first copper fitting is aimed to contact with cylindrical boss 341 end face of the second copper fitting and forms solder side, solder side is positioned at the centre position of dead ring, and to the first copper fitting apply towards the second copper fitting direction and the component of the power vertical with solder side or power, make the component of this power or power produce the pressure of 300KN to the solder side of the first copper fitting and the second copper fitting;
S5: keep the pressure suffered by solder side, and the second copper fitting is rotated relative to the first copper fitting, revolution is 1000 revs/min, makes the second copper fitting stop the rotation after 5s, and axial indent is 2mm, the first copper fitting and the second copper fitting to be welded together:
S6: machine work is carried out to the first copper fitting welded together and the second copper fitting and alumiaum article, to be processed into required form, 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 0.5-1mm larger than the installing hole internal diameter of dead ring, make cylindrical boss 341 and installing hole cross tight fit, improve the tightness of dead ring and copper fitting and alumiaum article; And by reasonably selecting to arrange surface roughness, pressure, revolution, axial indent, cooling rate, surface roughness, pressure, revolution and axial indent cooperatively interact when ensure that welding and produce enough temperature, make the metal at the first copper fitting and the second copper fitting solder side place produce plastic deformation, and commissure does not produce the defect such as bubble, crackle.Simultaneously, first copper fitting and the second copper fitting solder side place are because rotate friction under the effect of the pressure, thus, there is deformation in the axial direction in the first copper fitting and the second copper fitting, the radial dimension of solder side and near zone thereof expands and becomes large, makes the outer wall of the first copper fitting and the second copper fitting be close to dead ring, and dead ring and alumiaum article are also fit together tightly, bonding strength between each parts that improve battery positive/negative cover plate, improves useful life.The cross section of the copper fitting simultaneously formed after welding forms " work " font, and two end faces 33 of copper fitting are all large than the diameter of installing hole, can stop copper fitting and extrude from the axial side of installing hole.
Embodiment 4
The production method of a kind of battery positive/negative of the present embodiment cover plate, comprises the following steps:
S1: adopt plate like aluminium part, and process through hole at alumiaum article, alumiaum article is 1060 aluminium;
S2: dead ring established by card in through hole, and dead ring has installing hole, and the upper surface of dead ring abuts on the upper surface of alumiaum article, and the lower surface of dead ring abuts on the lower surface of alumiaum article; Dead ring is made up of PTFE;
S3: adopt two copper fittings, what copper fitting had a 0.5mm larger than installing hole internal diameter has the cylindrical base 342 that cylindrical boss 341 and diameter be greater than cylindrical boss 341 diameter, cylindrical boss 341 and cylindrical base 342 are coaxially arranged, the surface roughness of cylindrical boss 341 end face at Ra1.6, copper fitting red copper; And process coniform groove at cylindrical boss 341 end face of the first copper fitting, the cone-shaped bulge coordinated with cylindrical boss 341 end face of the first copper fitting is processed at cylindrical boss 341 end face of the second copper fitting, the axial length of cone-shaped bulge and coniform groove is 1mm, the angle of the bus of cone-shaped bulge and the axis of cone-shaped bulge is 83 °, and the angle of the bus of coniform groove and the axis of coniform groove is 80 °;
S4; The cylindrical boss 341 of the first copper fitting is extend in dead ring and together fixes with alumiaum article, second copper fitting is fixed on the spinning device, first copper fitting is aimed to contact with cylindrical boss 341 end face of the second copper fitting and forms solder side, solder side is positioned at the centre position of dead ring, and to the first copper fitting apply towards the second copper fitting direction and the component of the power vertical with solder side or power, make the component of this power or power produce the pressure of 150KN to the solder side of the first copper fitting and the second copper fitting;
S5; Keep the pressure suffered by solder side, and the second copper fitting is rotated relative to the first copper fitting, revolution is 600 revs/min, makes the second copper fitting stop the rotation after 3s, and axial indent is 1mm, the first copper fitting and the second copper fitting to be welded together;
S6; Machine work is carried out to the first copper fitting welded together and the second copper fitting and alumiaum article, to be processed into required form, obtains battery positive/negative cover plate.
Embodiment 5
The production method of a kind of battery positive/negative of the present embodiment cover plate, comprises the following steps:
S1; Adopt plate like aluminium part, and process through hole at alumiaum article, alumiaum article is 1060 aluminium;
S2; In through hole, dead ring established by card, and dead ring has installing hole, and the upper surface of dead ring abuts on the upper surface of alumiaum article, and the lower surface of dead ring abuts on the lower surface of alumiaum article; Dead ring is made up of PTFE;
S3; Adopt two copper fittings, what copper fitting had a 0.8mm larger than installing hole internal diameter has the cylindrical base 342 that cylindrical boss 341 and diameter be greater than cylindrical boss 341 diameter, cylindrical boss 341 and cylindrical base 342 are coaxially arranged, the surface roughness of cylindrical boss 341 end face at Ra4.6, copper fitting red copper; And process coniform groove at cylindrical boss 341 end face of the first copper fitting, the cone-shaped bulge coordinated with cylindrical boss 341 end face of the first copper fitting is processed at cylindrical boss 341 end face of the second copper fitting, the axial length of cone-shaped bulge and coniform groove is 1mm, the angle of the bus of cone-shaped bulge and the axis of cone-shaped bulge is 86 °, and the angle of the bus of coniform groove and the axis of coniform groove is 83 °;
S4: the cylindrical boss 341 of the first copper fitting is extend in dead ring and together fixes with alumiaum article, second copper fitting is fixed on the spinning device, first copper fitting is aimed to contact with cylindrical boss 341 end face of the second copper fitting and forms solder side, solder side is positioned at the centre position of dead ring, and to the first copper fitting apply towards the second copper fitting direction and the component of the power vertical with solder side or power, make the component of this power or power produce the pressure of 200KN to the solder side of the first copper fitting and the second copper fitting;
S5: keep the pressure suffered by solder side, and the second copper fitting is rotated relative to the first copper fitting, revolution is 800 revs/min, makes the second copper fitting stop the rotation after 4s, and axial indent is 1.5mm, the first copper fitting and the second copper fitting to be welded together;
S6: machine work is carried out to the first copper fitting welded together and the second copper fitting and alumiaum article, to be processed into required form, obtains battery positive/negative cover plate.
Embodiment 6
The production method of a kind of battery positive/negative of the present embodiment cover plate, comprises the following steps:
S1: adopt plate like aluminium part, and process through hole at alumiaum article, alumiaum article is 1060 aluminium;
S2: dead ring established by card in through hole, and dead ring has installing hole, and the upper surface of dead ring abuts on the upper surface of alumiaum article, and the lower surface of dead ring abuts on the lower surface of alumiaum article; Dead ring is made up of PTFE;
S3: adopt two copper fittings, what copper fitting had a 1mm larger than installing hole internal diameter has the cylindrical base 342 that cylindrical boss 341 and diameter be greater than cylindrical boss 341 diameter, cylindrical boss 341 and cylindrical base 342 are coaxially arranged, the surface roughness of cylindrical boss 341 end face at Ra6.3, copper fitting red copper; And process coniform groove at cylindrical boss 341 end face of the first copper fitting, the cone-shaped bulge coordinated with cylindrical boss 341 end face of the first copper fitting is processed at cylindrical boss 341 end face of the second copper fitting, the axial length of cone-shaped bulge and coniform groove is 1mm, the angle of the bus of cone-shaped bulge and the axis of cone-shaped bulge is 88 °, and the angle of the bus of coniform groove and the axis of coniform groove is 83 °;
S4: the cylindrical boss 341 of the first copper fitting is extend in dead ring and together fixes with alumiaum article, second copper fitting is fixed on the spinning device, first copper fitting is aimed to contact with cylindrical boss 341 end face of the second copper fitting and forms solder side, solder side is positioned at the centre position of dead ring, and to the first copper fitting apply towards the second copper fitting direction and the component of the power vertical with solder side or power, make the component of this power or power produce the pressure of 300KN to the solder side of the first copper fitting and the second copper fitting;
S5: keep the pressure suffered by solder side, and the second copper fitting is rotated relative to the first copper fitting, revolution is 1000 revs/min, makes the second copper fitting stop the rotation after 5s, and axial indent is 2mm, the first copper fitting and the second copper fitting to be welded together;
S6: machine work is carried out to the first copper fitting welded together and the second copper fitting and alumiaum article, to be processed into required form, obtains battery positive/negative cover plate.
The production method of the battery positive/negative cover plate in embodiment 4-6 is the distortion in the method described in embodiment 1-3, possesses the advantage described in embodiment 1-3, by processing coniform groove or cone-shaped bulge at the first copper fitting end face, and the cone-shaped bulge or coniform groove that coordinate with the first copper fitting end face is processed at the end face of the second copper fitting, cone-shaped bulge is equal with the axial length of coniform groove is 1-2mm.The angle of the bus of cone-shaped bulge and the axis of cone-shaped bulge 3-5 ° larger than the angle of the bus of coniform groove and the axis of coniform groove, the angle of the bus of cone-shaped bulge and the axis of cone-shaped bulge is 83-88 °, the angle of the bus of coniform groove and the axis of coniform groove is 80-83 °, during welding, cone-shaped bulge is aimed at coniform recess axis.On the one hand, coordinated with coniform groove alignment by cone-shaped bulge, provide location for welding the first two copper fitting, on the other hand, forming the solder bond face of conical surface when welding between two copper fittings, improve bonded area, improve weld strength.
It is pointed out that in embodiment 1-6, if the surface roughness of the end face of the copper fitting used does not reach Ra1.6-Ra6.3, then surface treatment is carried out to the end face of copper fitting, surface roughness is reached the control range of surface roughness.In addition, after S6 step, the net shape of copper fitting and alumiaum article can be controlled by machine work, simultaneously also can on copper fitting shaping screw 322, concrete shape is as shown in Figures 2 and 3.
Experimental example
Alumiaum article in the battery positive/negative cover plate obtained by embodiment 1-6 is fixed, the turning moment increased gradually is applied to copper fitting, when copper fitting rotates relative to alumiaum article, record value now, bear turning moment as the maximum of battery positive/negative cover plate, maximum turning moment of bearing is as shown in table 1.
Maximumly in table 1 embodiment 1-6 bear turning moment
| Embodiment | Maximumly 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 for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (9)
1. a production method for battery positive/negative cover plate, is characterized in that, comprises the following steps:
Adopt plate like aluminium part, and process through hole on alumiaum article;
In through hole, dead ring established by card, and dead ring has installing hole, and the upper surface of dead ring abuts on the upper surface of alumiaum article, and the lower surface of dead ring abuts on the lower surface of alumiaum article;
Adopt two copper fittings, what copper fitting had a 0.5-1mm larger than installing hole internal diameter has the cylindrical base that cylindrical boss and diameter be greater than cylindrical boss diameter, cylindrical boss and cylindrical base are coaxially arranged, and the surface roughness of circular cylindrical projection countertop is at Ra1.6-Ra6.3;
The cylindrical boss of the first copper fitting is extend in dead ring and together fixes with alumiaum article, second copper fitting is fixed on the spinning device, first copper fitting is aimed to contact with the circular cylindrical projection countertop of the second copper fitting and forms solder side, solder side is positioned at the centre position of dead ring, and to the first copper fitting apply towards the second copper fitting direction and the component of the power vertical with solder side or power, make the component of this power or power produce the pressure of 150-300KN to the solder side of the first copper fitting and the second copper fitting;
Keep the pressure suffered by solder side, and the second copper fitting is rotated relative to the first copper fitting, revolution is 600-1000 rev/min, makes the second copper fitting stop the rotation after 3-5s, axial indent is 1-2mm, the first copper fitting and the second copper fitting to be welded together;
The first copper fitting welded together and the second copper fitting are cooled to room temperature, cooling rate 200-300 DEG C/min;
Machine work is carried out to the first copper fitting welded together and the second copper fitting and alumiaum article, to be processed into required form, obtains battery positive/negative cover plate.
2. the production method of battery positive/negative cover plate according to claim 1, it is characterized in that, also comprise and surface treatment is carried out to control the step of the first copper fitting and the second copper fitting surface roughness to the circular cylindrical projection countertop of the first copper fitting and the second copper fitting.
3. the production method of battery positive/negative cover plate according to claim 1 and 2, is characterized in that, the first copper fitting and the second copper fitting are red copper, and alumiaum article is 1060 aluminium or 3003 aluminium, and dead ring is PTFE.
4. the production method of the battery positive/negative cover plate according to any one of claim 1-3, is characterized in that, after the second copper fitting stops the rotation, continue to keep above-mentioned pressure to solder side, the dwell time is no less than 10s.
5. the production method of the battery positive/negative cover plate according to any one of claim 1-4, it is characterized in that, the the first copper fitting circular cylindrical projection countertop selected has coniform groove or cone-shaped bulge, the circular cylindrical projection countertop of the second copper fitting selected has the cone-shaped bulge or coniform groove that coordinate with the circular cylindrical projection countertop of the first copper fitting, the axial length of cone-shaped bulge and coniform groove is 1-2mm, before rotating the second copper fitting, the cone-shaped bulge on the vertical end face of the second copper fitting or coniform groove are aimed at the coniform groove on the vertical end face of the first copper fitting or cone-shaped bulge.
6. the production method of battery positive/negative cover plate according to claim 5, is characterized in that, the angle of the bus of cone-shaped bulge and the axis of cone-shaped bulge 3-5 ° larger than the angle of the bus of coniform groove and the axis of coniform groove.
7. the production method of the battery positive/negative cover plate according to claim 5 or 6, is characterized in that, the angle of the bus of cone-shaped bulge and the axis of cone-shaped bulge is 83-88 °.
8. the production method of the battery positive/negative cover plate according to claim 5 or 6 or 7, is characterized in that, the angle of the bus of coniform groove and the axis of coniform groove is 80-83 °.
9. a battery positive/negative cover plate, is characterized in that, uses the production method as the battery positive/negative cover plate as described in arbitrary in claim 1-8 to produce and obtains.
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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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| 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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