CN112547855A - Ear folding device and ear folding equipment of reverse-winding type battery cell - Google Patents
Ear folding device and ear folding equipment of reverse-winding type battery cell Download PDFInfo
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- CN112547855A CN112547855A CN202011551167.9A CN202011551167A CN112547855A CN 112547855 A CN112547855 A CN 112547855A CN 202011551167 A CN202011551167 A CN 202011551167A CN 112547855 A CN112547855 A CN 112547855A
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- 238000004804 winding Methods 0.000 title claims description 11
- 208000016509 ear folding Diseases 0.000 title abstract description 6
- 238000005452 bending Methods 0.000 claims abstract description 133
- 238000003825 pressing Methods 0.000 claims abstract description 117
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 230000005611 electricity Effects 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims description 34
- 230000006835 compression Effects 0.000 claims description 22
- 238000007906 compression Methods 0.000 claims description 22
- 238000010030 laminating Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005096 rolling process Methods 0.000 abstract description 5
- 210000004027 cell Anatomy 0.000 description 89
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 12
- 238000004080 punching Methods 0.000 description 10
- 239000002985 plastic film Substances 0.000 description 8
- 229920006255 plastic film Polymers 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/002—Positioning devices
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- 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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
-
- 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
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- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
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- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
- H01M10/0409—Machines for assembling batteries for cells with wound electrodes
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- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The application provides a roll up utmost point ear device and book utmost point ear equipment of book formula electricity core of turning over. The pole ear folding device of the back-rolling type battery cell comprises a base, a battery cell positioning assembly, a battery cell pressing mechanism and a pole ear bending mechanism. The battery cell positioning assembly comprises a positioning piece, and the positioning piece is connected with the base. The battery cell pressing mechanism comprises a first support, a pressing piece and a first driving assembly, the first support is connected with the base, the first driving assembly is respectively connected with the first support and the pressing piece, and the first driving assembly is used for driving the pressing piece to be close to or far away from the positioning piece. The tab of the battery cell is bent through the fixed bending piece and the movable bending piece, so that a first bending angle is formed at the joint of the side face of the battery cell and the end face of the tab, a second bending angle is formed at the winding center of the battery cell, and the tab bending operation of the battery cell is completed. Because the operation of folding the tab is automatically carried out through the tab folding device, the tab folding speed is effectively improved, and the production efficiency of the battery cell and the bending quality of the tab are further improved.
Description
Technical Field
The invention relates to the technical field of battery production and processing equipment, in particular to a tab folding device and tab folding equipment for a reverse-wound battery core.
Background
Under the market drive, lithium ion batteries are rapidly developed and widely applied to the fields of information, intelligent wearing, electronics, medical treatment and the like. The reverse winding type battery cell is used as one of the battery cells of the lithium ion battery, has a larger space utilization rate, and has a higher winding pole piece density under the same volume, so that the reverse winding type battery cell has a larger electric energy reserve.
The utmost point ear of reverse coiling formula electricity core is located the outside of rolling up the core, and in order to make the plastic-aluminum membrane of parcel electricity core have sufficient intensity, be convenient for the processing of plastic-aluminum membrane and promote the leakproofness that the top sealed among the plastic-aluminum membrane packaging technology, need buckle the utmost point ear piece of reverse coiling electricity core to make utmost point ear piece buckle to the central authorities of rolling up core tip. However, the conventional tab folding process for the reverse winding type battery cell mainly depends on manual operation, which has great instability and inaccuracy, increases labor cost, and reduces the production efficiency of the reverse winding type battery cell.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a tab folding device and a tab folding device of a reverse winding type battery cell, which can automatically fold tab sheets of the reverse winding type battery cell and can improve the battery production efficiency of the reverse winding type battery cell.
The purpose of the invention is realized by the following technical scheme:
a tab folding device for a reverse-wound battery cell comprises:
a base;
the battery cell positioning assembly comprises a positioning piece, and the positioning piece is connected with the base;
the battery cell pressing mechanism comprises a first support, a pressing piece and a first driving assembly, the first support is connected with the base, the first driving assembly is arranged on the first support, the power output end of the first driving assembly is connected with the pressing piece, the pressing piece and the positioning piece are arranged oppositely, and the first driving assembly is used for driving the pressing piece to be close to or far away from the positioning piece;
utmost point ear bending mechanism, utmost point ear bending mechanism includes the second support, fixes the piece of buckling, activity piece and the second drive assembly of buckling, the second support respectively with the base reaches the fixed piece of buckling is connected, fixed buckle with the setting element is adjacent to be set up, the second drive assembly set up in the second support, just the power take off end of second drive assembly with the activity is buckled the piece and is connected, the activity buckle with the fixed piece of buckling sets up relatively, the second drive assembly is used for the drive the activity is buckled the piece and is close to or keeps away from the fixed piece of buckling.
In one embodiment, the positioning member is provided with a plurality of positioning grooves, and the plurality of positioning grooves are arranged side by side.
In one embodiment, the battery cell positioning assembly further includes a positioning adjusting member, the positioning adjusting member is slidably connected to the base, the positioning adjusting member slides in a direction close to or away from the positioning member, and each positioning groove is located between the positioning adjusting member and the fixed bending member.
In one embodiment, the pressing piece comprises a connecting plate, a compression spring and a pressing plate, the connecting plate is connected with the power output end of the first driving component, the pressing plate is connected with the connecting plate in a sliding mode, the compression spring is located between the connecting plate and the pressing plate, and two ends of the compression spring are respectively abutted to the pressing plate and the connecting plate.
In one of them embodiment, the pressfitting board still includes clamp plate body, spliced pole and fixture block, the clamp plate body with the spliced pole is connected, the through-hole has been seted up to the connecting plate, the spliced pole wear to establish in the through-hole and with connecting plate sliding connection, the fixture block is located the connecting plate deviates from one side of clamp plate body, just the fixture block with the spliced pole is connected, the compression spring cover is located the spliced pole, just compression spring's both ends respectively with the connecting plate with clamp plate body butt, the fixture block is used for when compression spring is in natural state butt in the connecting plate is kept away from the side of clamp plate.
In one embodiment, the pressing member is slidably connected to the first bracket.
In one embodiment, the cell pressing mechanism further includes a sliding connection assembly, the sliding connection assembly includes a slide rail and a slide block, the slide rail is connected to the first support, the slide block is connected to the pressing assembly, and the slide rail is slidably connected to the slide block.
In one embodiment, the fixed bent piece is detachably connected with the second bracket.
In one embodiment, the second bracket has an elongated hole, the fixed bending member has a threaded hole, the threaded hole communicates with the elongated hole, the fixed bending member includes a threaded fastener, the threaded fastener penetrates through the elongated hole, the threaded fastener is screwed with the threaded hole, and one end of the threaded fastener abuts against a side of the second bracket away from the fixed bending member.
A tab folding device, comprising the tab folding device of the back-wound battery core in any embodiment.
Compared with the prior art, the invention has at least the following advantages:
1. the activity piece of buckling moves towards the direction that is close to the fixed piece of buckling under the drive of second drive assembly, the activity piece of buckling will contact with the utmost point ear of electric core in the motion process, the activity is buckled and is driven utmost point ear and buckle to the direction that is close to the fixed piece of buckling after piece and the utmost point ear contact, make utmost point ear form first dog-ear in the side of electric core and the junction of terminal surface, the activity is buckled the piece and is continued to buckle towards fixed displacement of buckling, it continues to buckle to drive utmost point ear, when the activity is buckled a piece and fixed piece butt of buckling, because the plane of buckling of fixed piece is located the coiling center of electric core just, consequently, utmost point ear will form the second dog-ear in the coiling center department of electric core, so, the automatic utmost point ear. Because the tab folding operation is automatically carried out through the tab folding device, the tab folding speed is effectively improved, and further the production efficiency of the battery cell and the bending quality of the tab are improved.
2. The pressing piece not only plays a role in abutting the battery cell so as to fix the battery cell on the positioning piece, but also can continue to press down after the pressing piece abuts against the battery cell, so that the battery cell is pressed to deform, the coiled battery cell is changed into an oval shape from a round shape, and the thickness of the battery cell is reduced, so that the thickness of a battery cell groove on an aluminum-plastic film wrapping the battery cell can be correspondingly reduced, and thus, when the battery cell groove of the aluminum-plastic film is punched, the punching thickness of the aluminum-plastic film can be reduced, the strength of the aluminum-plastic film is higher, and the battery cell can be better protected; in addition, the reduction of the thickness of the battery cell is beneficial to the whole battery cell to be lighter and thinner, so that the battery and a product using the battery are more attractive in appearance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a tab folding device of a reverse-wound battery cell in an embodiment;
fig. 2 is a schematic structural diagram of another view angle of the tab folding device for the reverse-wound battery cell shown in fig. 1;
fig. 3 is a structural schematic diagram of a further view angle of the tab folding device of the back-rolled battery cell shown in fig. 1;
fig. 4 is a schematic structural diagram of a tab bending mechanism of the tab bending device of the back-rolled battery cell shown in fig. 1;
fig. 5 is a schematic structural diagram of another view angle of the tab bending mechanism of the tab bending device of the back-rolled battery cell shown in fig. 1.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, a tab folding device 10 for a reverse-wound battery cell according to an embodiment includes a base 100, a battery cell positioning assembly 200, a battery cell pressing mechanism 300, and a tab bending mechanism 400. The battery cell positioning assembly 200 includes a positioning member 210, and the positioning member 210 is connected to the base 100. The cell pressing mechanism 300 includes a first support 310, a pressing member 320 and a first driving assembly 330, the first support 310 is connected to the base 100, the first driving assembly 330 is disposed on the first support 310, a power output end of the first driving assembly 330 is connected to the pressing member 320, the pressing member 320 is disposed opposite to the positioning member 210, and the first driving assembly 330 is configured to drive the pressing member 320 to approach to or keep away from the positioning member 210. The tab bending mechanism 400 includes a second support 410, a fixed bending piece 420, a movable bending piece 430 and a second driving assembly 440, the second support 410 is respectively connected with the base 100 and the fixed bending piece 420, the fixed bending piece 420 is adjacent to the positioning piece 210, the second driving assembly 440 is disposed on the second support 410, the power output end of the second driving assembly 440 is connected with the movable bending piece 430, the movable bending piece 430 is opposite to the fixed bending piece 420, and the second driving assembly 440 is used for driving the movable bending piece 430 to be close to or far away from the fixed bending piece 420.
In this embodiment, the battery cell positioning assembly 200 includes a positioning element 210, the positioning element 210 is installed on the base 100, and the positioning element 210 is used for placing a battery cell, so as to achieve an effect of assisting in fixing the battery cell. The cell pressing mechanism 300 includes a first support 310, a pressing member 320, and a first driving assembly 330, the first support 310 is mounted on the base 100, the first driving assembly 330 is mounted on the first support 310, the pressing member 320 is connected to the first driving assembly 330, the pressing member 320 is opposite to the positioning member 210, the first driving assembly 330 is specifically a first air cylinder and a first air pump, the first air cylinder is respectively connected to the first air pump and the pressing member 320, and the first driving assembly 330 is configured to drive the pressing member 320 to move, so that the pressing member 320 moves toward the positioning member 210 or away from the positioning member 210. The tab bending mechanism 400 includes a second support 410, a fixed bending member 420, a movable bending member 430 and a second driving assembly 440, the second support 410 is installed on the base 100, the second support 410 is used for being connected to the second driving assembly 440 and the fixed bending member 420, the second driving assembly 440 is connected to the movable bending member 430, the fixed bending member 420 is located adjacent to the positioning member 210, the movable bending member 430 is opposite to the fixed bending member 420, the second driving assembly 440 is specifically an air cylinder and an air pump, the air cylinder is connected to the air pump and the movable bending member 430, and the second driving assembly 440 is used for driving the movable bending member 430 to move, so that the movable bending member 430 moves toward the fixed bending member 420 or away from the fixed bending member 420.
Further, before the tab is folded, the battery core needs to be placed in the positioning element 210, because the fixed bending piece 420 is located adjacent to the positioning element 210, the battery core is positioned on the positioning element 210, and the pole piece of the battery core is located between the fixed bending piece 420 and the movable bending piece 430. In order to make the bent tab be located at the winding center of the battery cell, the bending plane of the fixed bending piece 420 is located at the winding center of the battery cell, and therefore, when the battery cell is placed in the positioning piece 210, the battery cell needs to be adjusted, so that the pole piece of the battery cell is located between the fixed bending piece 420 and the movable bending piece 430, and the pole piece of the battery cell is close to the movable bending piece 430, so that the movable bending piece 430 can be effectively bent with the tab of the battery cell in the movement process relative to the fixed bending piece 420. The process of the tab folding device for folding the tab of the reversely rolled battery cell is as follows: first, the battery cell is positioned on the positioning member 210; then, the pressing member 320 is driven by the first driving component 330 to move towards the direction close to the positioning member 210, and when the pressing member 320 contacts with the battery cell, the pressing member 320 stops moving, so that the battery cell is completely fixed under the positioning action of the positioning member 210 and the pressing action of the pressing member 320, which is beneficial to ensuring higher stability of the battery cell when the battery cell tab is bent, and further ensuring the bending quality of the tab; then, the movable bending piece 430 moves towards the direction close to the fixed bending piece 420 under the driving of the second driving assembly 440, the movable bending piece 430 contacts with the tab of the battery cell in the moving process, the movable bending piece 430 drives the tab to bend towards the direction close to the fixed bending piece 420 after contacting with the tab, so that the tab forms a first folding angle at the joint of the side surface and the end surface of the battery cell, the movable bending piece 430 continues to displace towards the fixed bending piece 420 to drive the tab to continue to bend, when the movable bending piece 430 abuts against the fixed bending piece 420, as the bending plane of the fixed bending piece 420 is just located at the winding center of the battery cell, the tab forms a second folding angle at the winding center of the battery cell, and thus, the tab bending operation of the battery cell is completed.
Further, the pressing piece 320 can not only play the abutting electric core, so that the electric core is fixed on the positioning piece 210, but also after the pressing piece 320 abuts against the electric core, the pressing piece 320 can continue to press down, so that the electric core is deformed under pressure, the coiled electric core is changed from a circle into an ellipse, and further the thickness of the electric core is reduced, correspondingly, the thickness of the electric core groove on the aluminum-plastic film wrapping the electric core can be correspondingly reduced, namely when the electric core groove of the aluminum-plastic film is punched, the punching thickness can be reduced, so that the strength of the aluminum-plastic film is higher, and the protection effect on the electric core is better; in addition, the reduction of the thickness of the battery cell is beneficial to the whole battery cell to be lighter and thinner, so that the battery and a product using the battery are more attractive in appearance.
As shown in fig. 2, in one embodiment, the positioning element 210 has a plurality of positioning grooves 211, and the positioning grooves 211 are arranged side by side. Setting element 210 is used for placing electric core and restricts electric core and roll, in order to guarantee that the in-process electric core of buckling utmost point ear can remain stable, in this embodiment, setting element 210 includes a plurality of constant head tanks 211, the one end of each constant head tank 211 is relative with the fixed position of buckling piece 420, the cell wall that constant head tank 211 was placed to electric core in constant head tank 211 can restrict electric core and roll, in order to keep electric core position stable, when constant head tank 211 was arranged in to electric core, the utmost point ear of electric core stretched out and stretched into from the one end of constant head tank 211 between fixed piece 420 and the activity piece 430 of buckling, the operation of placing of electric core.
As shown in fig. 2, in one embodiment, the battery cell positioning assembly 200 further includes a positioning adjusting member 220, the positioning adjusting member 220 is slidably connected to the base 100, the positioning adjusting member 220 slides towards a direction close to or away from the positioning member 210, and each positioning slot 211 is located between the positioning adjusting member 220 and the fixing bending member 420. The positioning adjusting piece 220 is equivalent to the groove wall of the positioning groove 211, when the battery cell is placed in the positioning groove 211, one end of the battery cell is adjacent to the fixed bending piece 420, and the other end of the battery cell is abutted against the positioning adjusting piece 220, so that the positions where the battery cells are placed can be arranged neatly; location regulating part 220 and base 100 sliding connection, through the distance of location regulating part 220 and constant head tank 211, can adapt to the electric core of different length for the utmost point ear of the electric core of different length stretches out the adjacent position that the end homoenergetic lies in fixed piece 420 of buckling just, in order to obtain good effect, even make this adaptability of rolling over utmost point ear device stronger, can roll over utmost point ear operation to the electric core of multiple length difference.
As shown in fig. 3, in one embodiment, the pressing element 320 includes a connecting plate 321, a compression spring 323 and a pressing plate 322, the connecting plate 321 is connected to the power output end of the first driving component 330, the pressing plate 322 is slidably connected to the connecting plate 321, the compression spring 323 is located between the connecting plate 321 and the pressing plate 322, and two ends of the compression spring 323 abut against the pressing plate 322 and the connecting plate 321, respectively. The pressing piece 320 can not only play the role of fixing the electric core, but also can compress tightly the electric core, make electric core thickness reduce, when the pressing piece 320 pushes down, first drive assembly 330 drives connecting plate 321 to move down, connecting plate 321 drives compression spring 323 and pressing plate 322 to move down, when pressing plate 322 contacts with the electric core, pressing plate 322 fixes the electric core, pressing plate 322 stops moving down this moment, and connecting plate 321 continues to move down, compression spring 323 is compressed, and then exert elasticity to pressing plate 322, pressure compresses tightly the electric core, make the thickness of electric core descend, because the packing force to the electric core comes from compression spring's 323 elasticity, can make the pressure to the electric core more moderate, pressure to the electric core when preventing rigidity from pushing down acts on too strongly, lead to damaging the condition emergence of electric core inner structure.
As shown in fig. 3, in one embodiment, the pressing plate 322 further includes a pressing plate body 322a, a connection column 322b and a fixture block 322c, the pressing plate body 322a is connected to the connection column 322b, the connection plate 321 is provided with a through hole, the connection column 322b is inserted into the through hole and slidably connected to the connection plate 321, the fixture block 322c is located on a side of the connection plate 321 away from the pressing plate body 322a, the fixture block 322c is connected to the connection column, the compression spring 323 is sleeved on the connection column 322b, two ends of the compression spring 323 are respectively abutted to the connection plate 321 and the pressing plate body 322a, and the fixture block 322c is used for abutting to a side surface of the connection plate 321 away from the pressing plate when the compression spring 323 is in a natural state. The connecting plate 321 is connected with the pressing plate 322 through a connecting column 322b, the connecting column 322b comprises a connecting column and a fixture block 322c, one end of the connecting column is fixedly connected with the pressing plate 322, the other end of the connecting column penetrates through a through hole of the connecting plate 321, the end part of the connecting column penetrating through the connecting plate 321 is connected with the fixture block 322c, when the pressing member 320 is not operated, the coupling plate 321 and the pressing plate 322 are separated from each other by the elastic force of the compression spring 323, when the connection column is separated to a certain distance, the latch 322c of the connection column 322b will abut against the connection plate 321 to prevent the connection plate 321 and the pressing plate 322 from being separated continuously, so as to maintain the relative position of the connection plate 321 and the pressing plate 322, when the pressing part 320 works, the connecting column 322b can also play a role in guiding, so that the connecting plate 321 and the pressing plate 322 move along the axial direction of the connecting column 322b, the stability of the pressing part 320 during pressing is improved, and the pressing effect on the battery cell is better.
As shown in fig. 3, in one embodiment, the pressing member 320 is slidably connected to the first bracket 310. The pressing member 320 moves toward the direction close to the positioning member 210 or away from the positioning member 210 under the action of the first driving component 330, in order to enhance the stability of the pressing member 320 during the movement, in this embodiment, the pressing member 320 is slidably connected with the first support 310, because the first support 310 is fixed on the base 100, and the pressing member 320 is slidably connected with the first support 310, when the pressing member 320 works, the pressing member 320 can move along the sliding connection direction with the first support 310 under the driving of the first driving component 330, so that the movement process of the pressing member 320 is more stable, the stability of the pressing member 320 during the pressing is improved, and further, the pressing effect on the battery core is better.
As shown in fig. 3, in one embodiment, the cell pressing mechanism 300 further includes a sliding connection assembly 340, the sliding connection assembly 340 includes a sliding rail 342 and a sliding block 341, the sliding rail 342 is connected to the first bracket 310, the sliding block 341 is connected to the pressing element 320, and the sliding rail 342 is connected to the sliding block 341 in a sliding manner. The pressing member 320 is slidably connected to the first support 310, in this embodiment, the cell pressing mechanism 300 further includes a sliding connection assembly 340, the pressing member 320 slides relative to the first support 310 through the sliding connection assembly 340, the pressing member 320 is connected to the sliding block 341, the first pressing member is connected to the sliding rail 342, the sliding rail 342 is slidably connected to the sliding block 341, and the pressing member 320 can move along the length direction of the sliding rail 342 under the action of the sliding block 341 and the sliding rail 342, and further, is slidably connected to the first support 310.
As shown in fig. 4, in one embodiment, the fixing bent part 420 is detachably connected to the second bracket 410. Because the thickness of the battery cores of different models is different, the distance between the winding center of the battery core and the outermost side of the battery core is also different, and the bending plane of the fixed bending piece 420 needs to be located at the corresponding position of the winding center of the battery core in the process of bending the tab, therefore, when the tab is bent for the battery cores of different thicknesses, the position of the fixed bending piece 420 needs to be adjusted, and the tab is adapted to the battery cores of different thicknesses.
As shown in fig. 5, in one embodiment, the second bracket 410 is opened with a long hole 411, the fixed bent piece 420 is opened with a threaded hole, the threaded hole is communicated with the long hole 411, the fixed bent piece 420 includes a threaded fastener 421, the threaded fastener 421 is inserted through the long hole 411, the threaded fastener 421 is screwed with the threaded hole, and one end of the threaded fastener 421 abuts against a side of the second bracket 410 away from the fixed bent piece 420. The fixed bending piece 420 is slidably connected to the second bracket 410 to change the position of the fixed bending piece 420, and further, the fixed bending piece 420 is matched with the position of the battery cell, in this embodiment, the second bracket 410 and the fixed bending piece 420 are fixed by the threaded fastener 421, when the position of the fixed bending piece 420 needs to be changed, the threaded fastener 421 can be loosened, so that the second bracket 410 and the fixed bending piece 420 can slide relative to each other, then the fixed bending piece 420 is moved along the length direction of the strip hole 411, the position of the fixed bending piece 420 is changed, the bending plane of the fixed bending piece 420 is opposite to the position of the winding center of the battery cell, and finally the fixed bending piece 420 and the second bracket 410 are fixed again by the threaded fastener 421, that is, the position adjustment of the fixed bending piece 420 is completed.
In one embodiment, the side surface of the movable bending member adjacent to the fixed bending member is provided with a plurality of polar lug grooves, the polar lug grooves are arranged side by side, the fixed bending member is provided with a plurality of protruding structures, the protruding structures are used for being embedded with the plurality of polar lug grooves in a one-to-one correspondence manner, and the plurality of polar lug grooves and the plurality of positioning grooves are arranged in a one-to-one correspondence manner and are arranged adjacently. When buckling electric core tab, the activity is buckled piece and utmost point ear contact and is driven utmost point ear and buckle to the direction of being close to fixed piece of buckling, make utmost point ear form first dog-ear in the side of electric core and the junction of terminal surface, however, the activity is buckled a piece and is probably identical with the contact position of utmost point ear at every turn, consequently, utmost point ear is when buckling and forming first dog-ear, unable every turn all accurate buckle towards the direction at the terminal surface coiling center of electric core, lead to buckle when piece and fixed piece butt of buckling, unable messenger's utmost point ear is located to form the second dog-ear at the coiling center of electric core, and then process out the defective products, need the later stage manual work to rectify, and influenced production efficiency. In this embodiment, a plurality of utmost point ear grooves have been seted up to the side that the piece is close to the fixed piece of buckling of activity, a plurality of utmost point ear grooves and the adjacent setting of a plurality of constant head tank one-to-ones, when the piece of activity of buckling pushes down, utmost point ear groove will move towards the utmost point ear of electric core, make utmost point ear get into utmost point ear inslot, when the piece of activity of buckling continues to push down, because utmost point ear is located utmost point ear inslot, the cell wall in utmost point ear groove can play restriction utmost point ear deflection, make the terminal surface coiling center of electric core that utmost point ear can be accurate buckle, and then improve the quality that utmost point ear buckled, reduce the defective rate, improve the machining efficiency.
In one embodiment, the fixed bending member includes a fixed portion and a protruding portion, the fixed portion is connected to the second bracket, the protruding portion is connected to the fixed portion, the protruding portion protrudes from a side surface of the fixed portion, which is adjacent to the movable bending member, the protruding portion is adjacent to the positioning member, and the protruding structures are disposed on a side surface of the protruding portion, which is adjacent to the movable bending member. When buckling to electric core utmost point ear, the activity is buckled piece and utmost point ear contact and is driven utmost point ear and buckle to the direction of being close to fixed piece of buckling for utmost point ear forms first dog-ear in the side of electric core and the junction of terminal surface, the one end that electric core was kept away from to the in-process utmost point ear of buckling of first dog-ear will be earlier with the fixed piece contact of buckling, first dog-ear and utmost point ear begin to bend between the tip of keeping away from electric core this moment, the second dog-ear begins to buckle promptly, when fixed piece of buckling and activity buckle a butt, just accomplished buckling to the second dog-ear. However, in the above-mentioned process of buckling to utmost point ear, because the tip that electric core was kept away from to utmost point ear will be with fixed the piece contact of buckling sooner, and when the tip that electric core was kept away from to utmost point ear and fixed the piece contact of buckling, the distance that the piece was buckled apart from fixed the piece of buckling to the activity is great, consequently the process of buckling of second dog-ear will become long, the folding point of the second dog-ear of utmost point ear to the part utmost point ear structure between the tip that electric core was kept away from to utmost point ear will carry out whole bending for the phenomenon that the dog-ear appears bending partially very easily when carrying out the folding of second dog-ear, and then lead to the. In this embodiment, the protruding portion is used for propping with the movable bending piece, so that the tab is folded to form a second break angle, because the protruding portion protrudes out of the side surface of the fixed portion adjacent to the movable bending piece, a gradient structure can be formed between the protruding portion and the fixed portion, when the tab is folded, the end portion of the tab, which is far away from the battery core, is firstly contacted with the fixed portion, and because the protruding portion protrudes out of the side surface of the fixed portion, the movable bending piece can be quickly propped against the protruding portion, so that the folding time of the second break angle is shortened, the probability of the second break angle, which is folded to cause the deflection, is reduced, the reject ratio of the tab is reduced, and the forming quality of the tab is improved.
Furthermore, the side face of the protruding part adjacent to the movable bending part and the side face of the fixing part adjacent to the bending part are in a slope transition shape. After the tip of keeping away from electric core at utmost point ear and the fixed part contact to and the in-process that the activity kink continued to push down, the bellying is close to the side of activity kink is close to with the fixed part inclined plane between the side of kink can play the supporting role, carries out the contact support to the second dog-ear folding point of utmost point ear to the part utmost point ear structure between the tip that utmost point ear kept away from electric core promptly, reduces the degree of buckling to this section utmost point ear structure, and then reduces utmost point ear deflection's probability, improves the shaping quality that utmost point ear was buckled.
In one embodiment, the movable bending piece is provided with punching grooves, the punching grooves are respectively communicated with the lug grooves, and the length directions of the punching grooves are respectively perpendicular to the length directions of the lug grooves; the utmost point ear device of rolling up formula electricity core still includes utmost point ear cutting mechanism, and utmost point ear cutting mechanism includes die-cut piece and third drive assembly, and the sliding tray has been seted up to the fixed piece of buckling, die-cut piece is located the sliding tray, and die-cut piece and fixed a sliding connection of buckling, the die-cut portion of die-cut piece and the side parallel and level of the piece of buckling of the adjacent activity of fixed piece of buckling, and the die-cut portion of die-cut piece is relative setting with die-cut groove, third drive assembly is connected with the base, the power take off end and the die-cut piece of third drive assembly are connected, and third drive assembly is used for driving die-cut piece and is close to or. In this embodiment, die-cut piece is used for die-cutting the utmost point ear after buckling, make the length of utmost point ear comparatively moderate, specifically, when activity is buckled piece and fixed connection piece butt, the utmost point ear has accomplished bending deformation, and the utmost point ear is located the utmost point ear inslot of activity piece of buckling, the direction motion that the die-cut piece of third drive assembly drive was close to the groove of punching this moment, die-cut piece is in the motion process with utmost point ear contact and carry out die-cut to the utmost point ear, make the partial utmost point ear of overlength got rid of, make the length of utmost point ear comparatively moderate, die-cut piece will be planted in the groove of punching in-process, the groove of punching is greater than utmost point ear groove with the degree of depth of the groove of punching, consequently, can play the die.
Furthermore, a waste collecting groove is formed in the fixed bending piece and located on one side, away from the positioning piece, of the punching groove. In this embodiment, die-cut piece carries out die-cut back to utmost point ear, and the utmost point ear that is located die-cut piece and keeps away from setting element one side is amputated by die-cut piece, and the utmost point ear waste material of being amputated drops to the fixed garbage collection groove of buckling, avoids the utmost point ear waste material to be taken care of the effect of being convenient for collect and clear up utmost point ear waste material by the condition that drops along with locating after die-cut.
The application also provides a tab folding device, which comprises the tab folding device 10 of the back-rolled battery cell described in any of the above embodiments. As shown in fig. 1, in one embodiment, a tab folding device 10 for a reverse-wound battery cell includes a base 100, a battery cell positioning assembly 200, a battery cell pressing mechanism 300, and a tab folding mechanism 400. The battery cell positioning assembly 200 includes a positioning member 210, and the positioning member 210 is connected to the base 100. The cell pressing mechanism 300 includes a first support 310, a pressing member 320 and a first driving assembly 330, the first support 310 is connected to the base 100, the first driving assembly 330 is disposed on the first support 310, a power output end of the first driving assembly 330 is connected to the pressing member 320, the pressing member 320 is disposed opposite to the positioning member 210, and the first driving assembly 330 is configured to drive the pressing member 320 to approach to or keep away from the positioning member 210. The tab bending mechanism 400 includes a second support 410, a fixed bending piece 420, a movable bending piece 430 and a second driving assembly 440, the second support 410 is respectively connected with the base 100 and the fixed bending piece 420, the fixed bending piece 420 is adjacent to the positioning piece 210, the second driving assembly 440 is disposed on the second support 410, the power output end of the second driving assembly 440 is connected with the movable bending piece 430, the movable bending piece 430 is opposite to the fixed bending piece 420, and the second driving assembly 440 is used for driving the movable bending piece 430 to be close to or far away from the fixed bending piece 420.
In this embodiment, before the tab is folded, the battery core needs to be placed in the positioning element 210, the fixed bending piece 420 is located at the adjacent position of the positioning element 210, the battery core is placed behind the positioning element 210, and the pole piece of the battery core extends out of the positioning element 210 and extends into the space between the fixed bending piece 420 and the movable bending piece 430. In order to make the utmost point ear after buckling to be located the coiling center of electric core, the plane of buckling of fixed piece 420 of buckling is located the coiling center department of electric core just, consequently, when placing electric core in setting element 210, need rotate electric core to the pole piece that makes electric core is located the outside that setting element 210 was kept away from to electric core, just can place electric core in setting element 210 in order to carry out the bending of utmost point ear. After the battery cell is placed in the positioning element 210, the tab folding device 10 of the back-rolled battery cell can be controlled to work, firstly, the pressing and combining element 320 is driven by the first driving component 330 to move towards the direction close to the positioning element 210, and when the pressing and combining element 320 is contacted with the battery cell, the pressing and combining element 320 stops moving, so that the battery cell is completely fixed under the positioning action of the positioning element 210 and the pressing and combining action of the pressing and combining element 320, the stability of the battery cell is higher when the tab of the battery cell is bent, and the bending quality of the tab is further ensured; then, the movable bending piece 430 is driven by the second driving assembly 440 to move towards a direction close to the fixed bending piece 420, the movable bending piece 430 is in contact with a tab of the battery cell in the moving process, the movable bending piece 430 drives the tab to bend towards the direction close to the fixed bending piece 420 after being in contact with the tab, so that the tab forms a first break angle at the joint of the side surface and the end surface of the battery cell, the movable bending piece 430 continues to move towards the fixed bending piece 420, and the tab is driven to continue to be bent, when the movable bending piece 430 abuts against the fixed bending piece 420, because the bending plane of the fixed bending piece 420 is just located at the winding center of the battery cell, the tab forms a second break angle at the winding center of the battery cell, and thus, the tab bending operation of the battery cell is completed.
Further, fix electric core through setting element 210 and pressfitting piece 320 to buckle through fixed piece 420 and the activity of buckling and buckle the utmost point ear of piece 430 to electric core, make utmost point ear form first dog-ear in the side of electric core and the junction of terminal surface, and locate to form the second dog-ear in the coiling center of electric core, and then accomplished the operation of book utmost point ear of electric core. Because the operation of folding the tab is automatically carried out through the tab folding device, the tab folding speed is effectively improved, and the production efficiency of the battery cell and the bending quality of the tab are further improved. The pressfitting piece 320 can not only play the role of fixing the electric core, but also can perform pressfitting on the electric core so as to reduce the thickness of the electric core, so that the strength of the aluminum plastic film wrapping the electric core is higher, and the electric core is integrally lighter and thinner.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a roll up book utmost point ear device of formula electricity core which characterized in that includes:
a base;
the battery cell positioning assembly comprises a positioning piece, and the positioning piece is connected with the base;
the battery cell pressing mechanism comprises a first support, a pressing piece and a first driving assembly, the first support is connected with the base, the first driving assembly is arranged on the first support, the power output end of the first driving assembly is connected with the pressing piece, the pressing piece and the positioning piece are arranged oppositely, and the first driving assembly is used for driving the pressing piece to be close to or far away from the positioning piece;
utmost point ear bending mechanism, utmost point ear bending mechanism includes the second support, fixes the piece of buckling, activity piece and the second drive assembly of buckling, the second support respectively with the base reaches the fixed piece of buckling is connected, fixed buckle with the setting element is adjacent to be set up, the second drive assembly set up in the second support, just the power take off end of second drive assembly with the activity is buckled the piece and is connected, the activity buckle with the fixed piece of buckling sets up relatively, the second drive assembly is used for the drive the activity is buckled the piece and is close to or keeps away from the fixed piece of buckling.
2. The tab folding device for the rewinding type electric core according to claim 1, wherein the positioning member has a plurality of positioning grooves, and the positioning grooves are arranged side by side.
3. The tab folding device for the recoil type battery cell of claim 2, wherein the battery cell positioning assembly further comprises a positioning adjusting member, the positioning adjusting member is slidably connected to the base, the positioning adjusting member slides toward a direction close to or away from the positioning member, and each positioning groove is located between the positioning adjusting member and the fixed bending member.
4. The tab folding device for the reverse-wound battery cell of claim 1, wherein the pressing member comprises a connecting plate, a compression spring and a pressing plate, the connecting plate is connected to the power output end of the first driving assembly, the pressing plate is slidably connected to the connecting plate, the compression spring is located between the connecting plate and the pressing plate, and two ends of the compression spring are respectively abutted to the pressing plate and the connecting plate.
5. The tab folding device for the reverse winding type battery cell according to claim 4, wherein the pressing plate further comprises a pressing plate body, a connecting column and a fixture block, the pressing plate body is connected with the connecting column, the connecting plate is provided with a through hole, the connecting column penetrates through the through hole and is slidably connected with the connecting plate, the fixture block is located on one side of the connecting plate away from the pressing plate body, the fixture block is connected with the connecting column, the compression spring is sleeved on the connecting column, two ends of the compression spring are respectively abutted against the connecting plate and the pressing plate body, and the fixture block is abutted against a side surface of the connecting plate away from the pressing plate when the compression spring is in a natural state.
6. The tab folding device for the back-wound battery cell according to claim 1, wherein the pressing member is slidably connected to the first support.
7. The tab folding device for the back-wound battery cell according to claim 6, wherein the battery cell laminating mechanism further comprises a sliding connection assembly, the sliding connection assembly comprises a sliding rail and a sliding block, the sliding rail is connected to the first bracket, the sliding block is connected to the laminating member, and the sliding rail is connected to the sliding block in a sliding manner.
8. The tab folding device for the back-rolled battery cell according to claim 1, wherein the fixed folding member is detachably connected to the second bracket.
9. The tab folding device for the reverse-wound battery core according to claim 8, wherein the second support is provided with a long hole, the fixing bending member is provided with a threaded hole, the threaded hole is communicated with the long hole, the fixing bending member comprises a threaded fastener, the threaded fastener penetrates through the long hole and is screwed with the threaded hole, and one end of the threaded fastener abuts against one side of the second support, which is away from the fixing bending member.
10. A tab folding device, which is characterized by comprising the tab folding device of the back-rolled battery cell of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011551167.9A CN112547855A (en) | 2020-12-24 | 2020-12-24 | Ear folding device and ear folding equipment of reverse-winding type battery cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011551167.9A CN112547855A (en) | 2020-12-24 | 2020-12-24 | Ear folding device and ear folding equipment of reverse-winding type battery cell |
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| CN112547855A true CN112547855A (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011551167.9A Pending CN112547855A (en) | 2020-12-24 | 2020-12-24 | Ear folding device and ear folding equipment of reverse-winding type battery cell |
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