CN109647971A - A kind of lithium battery aluminium film rushes the method and device thereof of casing forming - Google Patents
A kind of lithium battery aluminium film rushes the method and device thereof of casing forming Download PDFInfo
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- CN109647971A CN109647971A CN201811271492.2A CN201811271492A CN109647971A CN 109647971 A CN109647971 A CN 109647971A CN 201811271492 A CN201811271492 A CN 201811271492A CN 109647971 A CN109647971 A CN 109647971A
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- China
- Prior art keywords
- aluminium film
- rushes
- casing forming
- concave template
- lithium battery
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 140
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 239000004411 aluminium Substances 0.000 title claims abstract description 116
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004080 punching Methods 0.000 claims abstract description 45
- 238000010112 shell-mould casting Methods 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims description 67
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 45
- 230000001105 regulatory effect Effects 0.000 claims description 42
- 230000003028 elevating effect Effects 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 2
- 241000209202 Bromus secalinus Species 0.000 abstract 1
- 239000011799 hole material Substances 0.000 description 38
- 239000000463 material Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000006073 displacement reaction Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 230000002411 adverse Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D33/00—Special measures in connection with working metal foils, e.g. gold foils
-
- 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
-
- 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
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The lithium battery aluminium film in being made is encapsulated the present invention relates to lithium ion battery and rushes casing forming technical field, and in particular to a kind of lithium battery aluminium film rushes the method and device thereof of casing forming.The method that the lithium battery aluminium film rushes casing forming first carries out pre- punching hole to aluminium film using rushing pit device in advance, so that aluminium film is obtained deformation pit, then carry out rushing casing forming to aluminium film in deformation pit using shell molding device is rushed.The method that lithium battery aluminium film of the invention rushes casing forming, improves and rushes casing forming depth, and it is thicker to rush casing forming rear shell quadrangle aluminum layer thickness.There is the basis of aluminium film once drawing due to rushing hole in advance, can reach during rushing casing forming in the later period than rushing deeper scour hole depth during hole in advance, and be plastically deformed during rushing casing forming few during relatively pre- punching hole, is able to achieve faster punching and cheats.
Description
Technical field
The aluminium film in being made is encapsulated the present invention relates to lithium ion battery and rushes casing forming technical field, and in particular to a kind of lithium electricity
Pond aluminium film rushes the method and device thereof of casing forming.
Background technique
It is part indispensable in current soft package lithium battery production that aluminium film, which rushes casing forming, and it is current for rushing shell speed and quality
Progressive direction；Current aluminium film Chong Keng mechanism mostly uses one-pass molding, stretching depth and stretch rear shell quadrangle aluminum layer thickness at
For bottleneck.
Summary of the invention
In order to overcome shortcoming and defect existing in the prior art, the purpose of the present invention is to provide a kind of lithium battery aluminium films
The method for rushing casing forming improves and rushes casing forming depth, and it is thicker to rush casing forming rear shell quadrangle aluminum layer thickness.
Another object of the present invention is to provide a kind of lithium battery aluminium films to rush shell molding device, increase it is pre- rush pit device,
The punching hole time is shortened, improves scour hole depth, aluminum hull quadrangle aluminum layer thickness is thicker after rushing casing forming.
The purpose of the invention is achieved by the following technical solution: a kind of method that lithium battery aluminium film rushes casing forming first uses
Pit device is rushed in advance, punching hole in advance is carried out to aluminium film, so that aluminium film is obtained deformation pit, then deforming pit using shell molding device is rushed
Aluminium film is carried out to rush casing forming.
Preferably, the pre- pit device that rushes includes the punching mechanism, top board and concave template set gradually from top to bottom；Institute
Stating punching mechanism is air ram structure, and the top board offers venthole, and the concave template offers clearance position, pre- punching hole
When, aluminium film is placed between top board and concave template, is passed through compressed air to venthole, compressed air is to jewelling under clearance position
Film, makes aluminium film to clearance position Direction distortion, and deformation pit is obtained in aluminium film.
Preferably, the clearance position is surrounded by bottom wall and the side wall upwardly extended from bottom wall, and the side wall is from top to bottom
Aduncate circular arc type, the bottom wall are provided with exhaust outlet.
Preferably, it is described it is pre- rush the elevating mechanism that pit device further includes pressure regulating mechanism and lift-up pressure regulating mechanism,
There are the pressure regulating mechanism multiple elasticity to go out force；When work, the elasticity goes out force and acts on the concave template, can make
The concave template deforms, so that the concave template and top board cooperation compress aluminium film.
Preferably, the pressure regulating mechanism include pedestal, be movably set in pedestal and through pedestal multiple power output bars,
For limit the limit plate for bar of contributing, work positioned at base bottom and the gas circuit cylinder manifold that is connect with pedestal and at the top of pedestal
When making, multiple power output bars are jacked up by being passed through air into gas circuit cylinder manifold, the multiple power output bars jacked up apply multiple works
With force in concave template, making concave template, deformation occurs, so that cooperating concave template and top board compresses aluminium film.
Another object of the present invention is achieved through the following technical solutions: a kind of lithium battery aluminium film rushes shell molding device, including
Pit device and shell molding device is rushed along pre- rush that aluminium film conveying direction is laid；The pre- pit device that rushes includes successively setting from top to bottom
The punching mechanism set, top board, concave template, pressure regulating mechanism and lift-up pressure regulating mechanism elevating mechanism, the punching press
Mechanism is air ram structure, and the top board offers venthole, and the concave template offers clearance position.
Preferably, the clearance position is surrounded by bottom wall and the side wall upwardly extended from bottom wall, and the side wall is from top to bottom
Aduncate circular arc type, the bottom wall are provided with exhaust outlet.
Preferably, there are the pressure regulating mechanism multiple elasticity to go out force, and the elastic force out acts on described recessed
Template can make the concave template deform.
Preferably, the pressure regulating mechanism include pedestal, be movably set in pedestal and through pedestal multiple power output bars,
For limit the limit plate for bar of contributing positioned at base bottom and the gas circuit cylinder manifold that is connect with pedestal and at the top of pedestal.
Preferably, the gas circuit cylinder manifold is hollow form structure, and the gas circuit cylinder manifold is provided with multiple air inlets and more
A venthole；The pedestal offers multiple through slots, and the power output bar is installed on the through slot；The top of the gas circuit cylinder manifold
It is provided with the multiple and one-to-one groove of the through slot, is provided at least one described outlet in each described groove
Hole, the venthole are connected to the through slot.
The beneficial effects of the present invention are: the method that lithium battery aluminium film of the invention rushes casing forming first passes through pre- punching hole for aluminium
Film is preforming, goes out one less than the deformation pit for actually rushing pit-size in punching hole position, participates in plasticity in this process and become
The aluminium film material of shape is more, not will lead to aluminium film material somewhere material and concentrates reduction, and will not leave behind the side being significantly plastically deformed
Boundary line can eliminate the trace rushed in advance during rushing casing forming, will not cause adverse effect to plastic-aluminum film outward appearance.Due to rushing hole in advance
Making aluminium film, once the basic of drawing exists, and can reach during rushing casing forming in the later period and deeper rushes hole during hole than rushing in advance
Depth, and be plastically deformed during relatively pre- punching hole less during rushing casing forming, it is able to achieve faster punching hole.Existing skill
Material concentrates reduction to mostly occur in four angular region of aluminum hull in the drawing process of punching hole in art, and due to there is pre- punching hole drawing in the present invention
Basis, four angular region material flow of aluminum hull is lost less during later period casing forming, and it is thicker to stretch rear shell quadrangle aluminum layer thickness.
Lithium battery aluminium film of the invention rushes shell molding device, is provided with before rushing casing forming and rushes pit device in advance, keeps aluminium film first
It carries out carrying out the final casing forming that rushes again after the processing of pre- punching hole, rush in advance hole processing deposits the basis of aluminium film once drawing
, it is subsequent rush casing forming during can reach than in the prior art using once the deeper depth of casing forming is rushed, in addition, pre-
It carries out rushing casing forming processing again after rushing hole processing, so that aluminium film is plastically deformed opposite nothing during rushing casing forming and rushes at hole in advance
It is few when reason, it is able to achieve and faster rushes casing forming.Aluminium film thickness is concentrated to reduce and be mostly occurred in formation in rushing shell drawing process
Four angular regions of aluminum hull, since once pre- punching hole carries out the basis of drawing, when rushing casing forming, four angular region material flow of aluminum hull is lost more
Few, aluminum hull quadrangle aluminum layer thickness is thicker after stretching.
It is of the invention it is pre- rush pit device, venthole is opened up on top board, compressed air is passed through by punching mechanism, is forced
The clearance position Direction distortion that the aluminium film being compacted is opened up on concave template forms deformation pit.Deflection passes through design concave template
Clearance position size and the pressure of compressed air, gassing time control.It should be less than when concave template clearance position size design
Aluminum hull is practical to rush shell size, and effect rushes influence of the shell to shell is finally rushed also for elimination as far as possible in advance.
Detailed description of the invention
Fig. 1 is the schematic perspective view that lithium battery aluminium film of the invention rushes shell molding device；
Fig. 2 is the structural schematic diagram that lithium battery aluminium film of the invention rushes shell molding device；
Fig. 3 is the pre- decomposition texture schematic diagram for rushing pit device of the invention；
Fig. 4 is the pre- process schematic for rushing casing forming of the invention；
Fig. 5 is the structural schematic diagram of pressure regulating mechanism of the invention；
Fig. 6 is the decomposition texture schematic diagram of pressure regulating mechanism of the invention.
Appended drawing reference are as follows: A, rush pit device in advance；B, shell molding device is rushed；1, top board；11, venthole；2, concave template；
21, clearance position；22, exhaust outlet；3, pressure regulating mechanism；31, pedestal；311, through slot；32, power output bar；321, mandril；322, bottom
Bar；33, gas circuit cylinder manifold；331, air inlet；332, venthole；333, groove；34, limit plate；341, limiting slot；4, elevator
Structure；5, rack；51, top mold holder；52, lower template.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made below with reference to examples and drawings 1-6 further
Explanation, the content that embodiment refers to not is limitation of the invention.
Embodiment one.
As shown in Figs 1-4, a kind of lithium battery aluminium film rushes shell molding device, including the pre- punching hole laid along aluminium film conveying direction
Device A and rush shell molding device B；It is described it is pre- rush pit device A include the punching mechanism set gradually from top to bottom, it is top board 1, recessed
The elevating mechanism 4 of template 2, pressure regulating mechanism 3 and lift-up pressure regulating mechanism 3, the punching mechanism are air ram structure,
The top board 1 offers venthole 11, and the concave template 2 offers clearance position 21.
Rushing pit device A in advance includes rack 5, and the rack 5 is provided with top mold holder 51 and lower template 52, and top board 1 is fixed on
The bottom of top mold holder 51, pressure regulating mechanism 3 are set to the top of lower template 52, and elevating mechanism 4 adjusts machine for lift-up pressure
Structure 3.When work, top mold holder 51 and top board 1 are fixed, aluminium film are passed through between top board 1 and concave template 2, and make aluminium
Film is close to top board 1, and 4 lift-up pressure regulating mechanism 3 of elevating mechanism cooperates top board 1 and pressure regulating mechanism 3 and compresses aluminium
Then film inputs compressed air by venthole 11 and carries out punching press, complete an aluminium film and rush hole process in advance.
Lithium battery aluminium film of the invention rushes shell molding device, is provided with before rushing casing forming and rushes pit device A in advance, keeps aluminium film first
It carries out carrying out the final casing forming that rushes again after the processing of pre- punching hole, rush in advance hole processing deposits the basis of aluminium film once drawing
, it is subsequent rush casing forming during can reach than in the prior art using once the deeper depth of casing forming is rushed, in addition, pre-
It carries out rushing casing forming processing again after rushing hole processing, so that aluminium film is plastically deformed opposite nothing during rushing casing forming and rushes at hole in advance
It is few when reason, it is able to achieve and faster rushes casing forming.Aluminium film thickness is concentrated to reduce and be mostly occurred in formation in rushing shell drawing process
Four angular regions of aluminum hull, since once pre- punching hole carries out the basis of drawing, when rushing casing forming, four angular region material flow of aluminum hull is lost more
Few, aluminum hull quadrangle aluminum layer thickness is thicker after stretching.
It is of the invention it is pre- rush pit device A, venthole 11 is opened up on top board 1, compressed air is passed through by punching mechanism,
21 Direction distortion of clearance position for forcing the aluminium film being compacted to open up on concave template 2 forms deformation pit.Deflection passes through design
The pressure of 21 size of clearance position of concave template 2 and compressed air, gassing time control.2 clearance position of concave template, 21 size is set
Timing practical less than aluminum hull should rush shell size, and effect rushes influence of the shell to shell is finally rushed also for elimination as far as possible in advance.
In the present embodiment, the clearance position 21 is surrounded by bottom wall and the side wall upwardly extended from bottom wall, the side wall be from
The aduncate circular arc type under, the bottom wall are provided with exhaust outlet 22.
Rouno Cormer Pregrinding Wheel surdimensionnement is set by the side wall of clearance position 21, avoids generating significantly, no during pre- punching hole
The plastic deformation trace easily eliminated.Under the action of compressed air, force the aluminium film being compacted on the concave template 2 below aluminium film
The clearance position 21 opened up deforms, and the air in clearance position 21 is discharged from exhaust outlet 22 by aluminium film deformable squeeze, makes
Aluminium film is rushed out a plastic deformation pit in the position of clearance position 21.
As seen in figs. 5-6, in the present embodiment, there are the pressure regulating mechanism 3 multiple elasticity to go out force, the concave template
2 cooperate with top board 1 for compressing aluminium film, and the elasticity goes out force and acts on the concave template 2, and the concave template 2 can be made to send out
Change shape.
It is of the invention it is pre- rush pit device A, aluminium film is compressed by top board 1 and concave template 2, is provided with below concave template 2
Pressure regulating mechanism 3, there are the pressure regulating mechanism 3 multiple elasticity to go out force, during compressing aluminium film, elasticity power output
Point acts on the concave template 2, is made between top board 1, aluminium film and concave template 2 by pressure regulating mechanism 3 and the cooperation of concave template 2
It fits closely, to uniformly compress aluminium film, has effectively eliminated top board 1, aluminium film and the concave template 2 compressed during aluminium film
Between parallelism error, greatly improve quality and speed that aluminium film rushes casing forming.Pressure regulating mechanism 3 of the invention has
Have it is multiple elasticity go out forces, can uniformly and dispersion output pressure, concave template 2 of the invention have morphotropism, it is easily deformable,
The parallelism error bring adverse effect between top board 1 in compaction process, aluminium film and concave template 2 can be offset.The present invention
Pressure regulating mechanism 3 and concave template 2 cooperate, convert surface pressure for the point pressure that pressure regulating mechanism 3 exports, then to aluminium film
It is compressed.
In the present embodiment, the pressure regulating mechanism 3 includes pedestal 31, is movably set in pedestal 31 and through pedestal 31
Multiple power output bars 32 are used for positioned at 31 bottom of pedestal and the gas circuit cylinder manifold 33 that connect with pedestal 31 and at the top of pedestal 31
The limit plate 34 of limit power output bar 32.
Gas circuit cylinder manifold 33 is located at 31 bottom of pedestal and connect with pedestal 31, and 33 external gas source of gas circuit cylinder manifold will simultaneously pass through
Uniform output to pedestal 31 is that power output bar 32 provides pneumatic drive, is subjected to displacement power output bar 32 in a certain range, gas
Dynamic drive force power output bar 32 is subjected to displacement upwards, and jacking concave template 2 is that concave template 2 provides pressing force, when top board 1, aluminium
There are when parallelism error between film and concave template 2, different floating displacements can occur for the power output bar 32 of corresponding position, make concave template
2 compression aluminium films are close to top boards 1 and eliminate parallelism error, simultaneously because the power of power output bar 32 not by the variation of floating displacement and
Variation, keeps the power for acting on concave template 2 uniform and dispersed distribution, and the force for spending force of any one power output bar 32 is all the same.
In the present embodiment, the gas circuit cylinder manifold 33 be hollow form structure, the gas circuit cylinder manifold 33 be provided with it is multiple into
Stomata 331 and multiple ventholes 332；The pedestal 31 offers multiple through slots 311, and the power output bar 32 is installed on the through slot
311；The top of the gas circuit cylinder manifold 33 be provided with it is multiple with the one-to-one groove 333 of the through slot 311, described in each
At least one described venthole 332 is provided in groove 333, the venthole 332 is connected to the through slot 311.
Gas circuit cylinder manifold 33 is hollow form structure, offers multiple air inlets 331 in the side wall of gas circuit cylinder manifold 33 and is used for
External gas source is located at the position in groove 333 at the top of gas circuit cylinder manifold 33 and offers multiple ventholes 332, venthole 332
Be connected to pedestal 31 for power output bar 32 pneumatic drive is provided, be inside gas circuit cylinder manifold 33 it is hollow, make multiple power output bars 32 by
The pneumatic drive size arrived is the same, ensure that the power output of pressure regulating mechanism 3 uniformly and disperses.Specifically in gas circuit cylinder manifold
33 tops are provided with multiple grooves 333 corresponding with through slot 311, groove 333 and the one hollow appearance of formation of through slot 311 when assembling
Receive chamber, power output bar 32 is located in this accommodating chamber, and each accommodating chamber is corresponding with one or more ventholes 332, passes through venthole 332
Pneumatic drive is provided into accommodating chamber, make to contribute the upward floating of bar 32 and acts on concave template 2 with certain top lift, respectively
The gas circuit of a accommodating chamber is exported from gas circuit cylinder manifold 33, becomes the power output of power output bar 32 by the variation of floating displacement
Change, the pneumatic drive size for being subject to multiple power output bars 32 is the same, and the power output for further ensuring each power output bar 32 is uniform
And disperse.
The power output bar 32 includes mandril 321 interconnected and bottom bar 322, and the outer diameter of the mandril 321 is less than described
The outer diameter of bottom bar 322；The limit plate 34 is provided with multiple limiting slots 341, and the internal diameter of the limiting slot 341 is greater than the mandril
321 outer diameter and the outer diameter for being less than the bottom bar 322, the mandril 321 may pass through the limiting slot 341.
Limit plate 34 is used to limit the floating displacement of power output bar 32, prevents power output bar 32 from deviating from pedestal 31, limiting slot 341
Internal diameter is greater than the outer diameter of the mandril 321 and is less than the outer diameter of the bottom bar 322, ensure that 321 part of mandril of power output bar 32
Limiting slot 341 can be passed through to provide pressure to concave template 2, and bottom bar 322 does not pass through limiting slot 341 and does not fall out pedestal
31。
Embodiment two.
As shown in figures 1 to 6, a kind of method that lithium battery aluminium film rushes casing forming, first using the pre- pit device A that rushes to aluminium film progress
Pre- punching hole makes aluminium film obtain deformation pit, then carries out rushing casing forming to aluminium film in deformation pit using shell molding device B is rushed.
The method that lithium battery aluminium film of the invention rushes casing forming first passes through pre- punching hole, and aluminium film is preforming, rushes in punching hole position
One is less than the deformation pit for actually rushing pit-size out, and the aluminium film material for participating in plastic deformation in this process is more, will not lead
It causes aluminium film material somewhere material to concentrate to reduce, and will not leave behind the boundary line being significantly plastically deformed, during rushing casing forming
The trace rushed in advance can be eliminated, adverse effect will not be caused to plastic-aluminum film outward appearance.Make the base of aluminium film once drawing due to rushing hole in advance
Plinth exists, and is can reach during rushing casing forming in the later period than rushing deeper scour hole depth during hole in advance, and is rushing casing forming
It is plastically deformed during relatively pre- punching hole in the process less, is able to achieve faster punching hole.In the prior art in the drawing process of punching hole
Material, which is concentrated to reduce, to mostly occur in four angular region of aluminum hull, and due to having the basis of pre- punching hole drawing, later period casing forming mistake in the present invention
Four angular region material flow of aluminum hull is lost less in journey, and it is thicker to stretch rear shell quadrangle aluminum layer thickness.
In the present embodiment, the pre- pit device A that rushes includes the punching mechanism set gradually from top to bottom, top board 1 and recessed
Template 2, the punching mechanism are air ram structure, and the top board 1 offers venthole 11, and the concave template 2 offers
Clearance position 21, when pre- punching is cheated, inputting compressed air by venthole 11 makes the clearance position opened up on the aluminium film concave template 2 being compacted
21 Direction distortions obtain deformation pit.
Venthole 11 is opened up on top board 1, compressed air is passed through by punching mechanism, forces the aluminium film that is compacted to recessed
21 Direction distortion of clearance position opened up in template 2.21 size of clearance position and compressed air that deflection passes through design concave template 2
Pressure, gassing time controls.Practical less than aluminum hull shell size should be rushed when 2 21 size design of clearance position of concave template, made
Influence of the shell to shell is finally rushed is rushed in advance with also for elimination as far as possible.
In the present embodiment, the clearance position 21 is surrounded by bottom wall and the side wall upwardly extended from bottom wall, the side wall be from
The aduncate circular arc type under, the bottom wall are provided with exhaust outlet 22.
Rouno Cormer Pregrinding Wheel surdimensionnement is set by the side wall of clearance position 21, avoids generating significantly, no during pre- punching hole
The plastic deformation trace easily eliminated.Under the action of compressed air, force the aluminium film being compacted on the concave template 2 below aluminium film
The clearance position 21 opened up deforms, and the air in clearance position 21 is discharged from exhaust outlet 22 by aluminium film deformable squeeze, makes
Aluminium film is rushed out a plastic deformation pit in the position of clearance position 21.
It is described pre- to rush the liter that pit device A further includes pressure regulating mechanism 3 and lift-up pressure regulating mechanism 3 in the present embodiment
Descending mechanism 4；There are the pressure regulating mechanism 3 multiple elasticity to go out force；When work, the elastic force out acts on described recessed
Template 2 can make the concave template 2 deform, and the concave template 2 compresses aluminium film with the cooperation of top board 1.
Aluminium film is compressed by top board 1 and concave template 2, pressure regulating mechanism 3, the bullet are provided with below concave template 2
Property mechanism have it is multiple elasticity go out forces, during compressing aluminium film, elasticity out force act on the concave template 2, pass through
Pressure regulating mechanism 3 and the cooperation of concave template 2 make to fit closely between top board 1, aluminium film and concave template 2, to uniformly compress
Aluminium film has effectively eliminated the parallelism error between top board 1, aluminium film and the concave template 2 during compressing aluminium film, greatly
Improve quality and speed that aluminium film rushes casing forming.There are pressure regulating mechanism 3 of the invention multiple elasticity to go out force, Neng Goujun
Even and dispersion output pressure, concave template 2 of the invention has morphotropism, easily deformable, can offset upper pressure in compaction process
Parallelism error bring adverse effect between plate 1, aluminium film and concave template 2.Pressure regulating mechanism 3 of the invention and concave template
2 cooperations, convert surface pressure for the point pressure that pressure regulating mechanism 3 exports, then compress to aluminium film.
In the present embodiment, the pressure regulating mechanism 3 includes pedestal 31, is movably set in pedestal 31 and through pedestal 31
Multiple power output bars 32 are used for positioned at 31 bottom of pedestal and the gas circuit cylinder manifold 33 that connect with pedestal 31 and at the top of pedestal 31
The limit plate 34 of limit power output bar 32, when work, is jacked up multiple power output bars 32 by being passed through air into gas circuit cylinder manifold 33,
The multiple power output bars 32 jacked up apply multiple force positions in concave template 2, and making concave template 2, deformation occurs, to make concave template
2, it is bonded between aluminium film and top board 1 close.
Gas circuit cylinder manifold 33 is located at 31 bottom of pedestal and connect with pedestal 31, and 33 external gas source of gas circuit cylinder manifold will simultaneously pass through
Uniform output to pedestal 31 is that power output bar 32 provides pneumatic drive, is subjected to displacement power output bar 32 in a certain range, gas
Dynamic drive force power output bar 32 is subjected to displacement upwards, and jacking concave template 2 is that concave template 2 provides pressing force, when top board 1, aluminium
There are when parallelism error between film and concave template 2, different floating displacements can occur for the power output bar 32 of corresponding position, make concave template
2 compression aluminium films are close to top boards 1 and eliminate parallelism error, simultaneously because the power of power output bar 32 not by the variation of floating displacement and
Variation, keeps the power for acting on concave template 2 uniform and dispersed distribution, and the force for spending force of any one power output bar 32 is all the same.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way,
Do not depart under the premise of present inventive concept it is any obviously replace it is within the scope of the present invention.
Claims (10)
1. a kind of method that lithium battery aluminium film rushes casing forming, it is characterised in that: first use is rushed pit device in advance and rushed in advance to aluminium film
Hole makes aluminium film obtain deformation pit, then carries out rushing casing forming to aluminium film in deformation pit using shell molding device is rushed.
2. the method that lithium battery aluminium film according to claim 1 rushes casing forming, it is characterised in that: described pre- to rush pit device packet
Include the punching mechanism, top board and concave template set gradually from top to bottom；The punching mechanism be air ram structure, it is described on
Pressing plate offers venthole, and the concave template offers clearance position, when pre- punching hole, by aluminium film be placed in top board and concave template it
Between, it is passed through compressed air to venthole, compressed air pushes aluminium film to clearance position, makes aluminium film to clearance position Direction distortion, in aluminium
Deformation pit is obtained on film.
3. the method that lithium battery aluminium film according to claim 2 rushes casing forming, it is characterised in that: the clearance position is by bottom wall
It is surrounded with the side wall upwardly extended from bottom wall, the side wall is that aduncate circular arc type, the bottom wall are provided with from top to bottom
Exhaust outlet.
4. the method that lithium battery aluminium film according to claim 2 rushes casing forming, it is characterised in that: described pre- to rush pit device also
Elevating mechanism including pressure regulating mechanism and lift-up pressure regulating mechanism, the pressure regulating mechanism have multiple elasticity power outputs
Point；When work, the elasticity goes out force and acts on the concave template, the concave template can be made to deform, so that the cavity plate
Plate and top board cooperation compress aluminium film.
5. the method that lithium battery aluminium film according to claim 4 rushes casing forming, it is characterised in that: the pressure regulating mechanism
Including pedestal, be movably set in pedestal and through multiple power output bars of pedestal, positioned at base bottom and the gas circuit that is connect with pedestal
Cylinder manifold and at the top of the pedestal for limit the limit plate for bar of contributing, when work, by being passed through sky into gas circuit cylinder manifold
Gas jacks up multiple power output bars, and the multiple power output bars jacked up apply multiple force positions in concave template, makes concave template that shape occur
Become, so that cooperating concave template and top board compresses aluminium film.
6. a kind of lithium battery aluminium film rushes shell molding device, it is characterised in that: including the pre- punching hole dress laid along aluminium film conveying direction
Set and rush shell molding device；The pre- pit device that rushes includes the punching mechanism, top board and concave template set gradually from top to bottom,
The punching mechanism is air ram structure, and the top board offers venthole, and the concave template offers clearance position.
7. lithium battery aluminium film according to claim 6 rushes shell molding device, it is characterised in that: the clearance position by bottom wall and
The side wall upwardly extended from bottom wall surrounds, and the side wall is that aduncate circular arc type, the bottom wall are provided with row from top to bottom
Port.
8. lithium battery aluminium film according to claim 6 rushes shell molding device, it is characterised in that: the pre- pit device that rushes also wraps
The elevating mechanism of pressure regulating mechanism and lift-up pressure regulating mechanism is included, the pressure regulating mechanism has multiple elasticity power outputs
Point, the elasticity go out force and act on the concave template, and the concave template can be made to deform.
9. lithium battery aluminium film according to claim 8 rushes shell molding device, it is characterised in that: the pressure regulating mechanism packet
Include pedestal, be movably set in pedestal and through pedestal multiple power output bars, positioned at base bottom and connect with pedestal gas circuit remittance
Flowing plate and the limit plate for being used to limit power output bar at the top of pedestal.
10. lithium battery aluminium film according to claim 9 rushes shell molding device, it is characterised in that: the gas circuit cylinder manifold is
Hollow form structure, the gas circuit cylinder manifold are provided with multiple air inlets and multiple ventholes；The pedestal offers multiple through slots,
The power output bar is installed on the through slot；It is provided at the top of the gas circuit cylinder manifold multiple recessed correspondingly with the through slot
Slot is provided at least one described venthole in each described groove, and the venthole is connected to the through slot.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811271492.2A CN109647971B (en) | 2018-10-29 | 2018-10-29 | Method and device for punching and forming aluminum film of lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811271492.2A CN109647971B (en) | 2018-10-29 | 2018-10-29 | Method and device for punching and forming aluminum film of lithium battery |
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| Publication Number | Publication Date |
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| CN109647971A true CN109647971A (en) | 2019-04-19 |
| CN109647971B CN109647971B (en) | 2020-06-02 |
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| CN201811271492.2A Active CN109647971B (en) | 2018-10-29 | 2018-10-29 | Method and device for punching and forming aluminum film of lithium battery |
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| JPH0536391A (en) * | 1991-01-23 | 1993-02-12 | Seiko Electronic Components Ltd | Manufacture of flat type battery |
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| CN107234159A (en) * | 2017-07-24 | 2017-10-10 | 东莞市超业精密设备有限公司 | A kind of aluminum plastic film shell molding device and its application method |
| CN206619652U (en) * | 2017-02-23 | 2017-11-07 | 宁德新能源科技有限公司 | Rush pit device |
| CN107994138A (en) * | 2017-11-30 | 2018-05-04 | 西安瑟福能源科技有限公司 | A kind of soft bag lithium ionic cell aluminum plastic film rushes shell structure and method |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0536391A (en) * | 1991-01-23 | 1993-02-12 | Seiko Electronic Components Ltd | Manufacture of flat type battery |
| CN2916932Y (en) * | 2006-03-14 | 2007-06-27 | 广州市番禺丰江电池制造有限公司 | Cylindrical lithium battery soft packing shell |
| CN102054942A (en) * | 2010-12-16 | 2011-05-11 | 天津力神电池股份有限公司 | Method for punching shells at two sides of aluminum-plastic packaging bag of polymer lithium ion battery by using shell repairing mold |
| CN103378320A (en) * | 2013-07-02 | 2013-10-30 | 东莞市鸿宝锂电科技有限公司 | Automatic forming machine for lithium battery aluminum plastic film |
| CN206619652U (en) * | 2017-02-23 | 2017-11-07 | 宁德新能源科技有限公司 | Rush pit device |
| CN107234159A (en) * | 2017-07-24 | 2017-10-10 | 东莞市超业精密设备有限公司 | A kind of aluminum plastic film shell molding device and its application method |
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| CN109647971B (en) | 2020-06-02 |
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