CN106602148A - Soft package lithium core and manufacturing technology thereof - Google Patents
Soft package lithium core and manufacturing technology thereof Download PDFInfo
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- CN106602148A CN106602148A CN201611109111.1A CN201611109111A CN106602148A CN 106602148 A CN106602148 A CN 106602148A CN 201611109111 A CN201611109111 A CN 201611109111A CN 106602148 A CN106602148 A CN 106602148A
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- plate
- barrier film
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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
- H01M10/058—Construction or manufacture
- H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
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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
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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
- H01M10/0459—Cells or batteries with folded separator between plate-like electrodes
-
- 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
- H01M10/049—Processes for forming or storing electrodes in the battery container
-
- 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
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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
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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
- 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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a soft package lithium core and a manufacturing technology thereof. The soft package lithium core is used for improving the level of packaging, so that the safety performance of the core is improved. The core comprises positive plates, negative plates, diaphragms and a soft package shell, wherein the positive plates (A) are arranged between the first diaphragms and the second diaphragms, a diaphragm belt is formed through packaging in a heat sealing manner on the periphery of each positive plate, the diaphragm belts are arranged in the soft package shell in a Z-shaped folding manner, and a negative plate is clamped between every two adjacent diaphragm belts; positive lugs welded onto the positive plates extend to the outer side of the soft package shell after passing through the edges of the diaphragm belts; negative lugs welded onto the negative plates extend to the outer side of the soft package shell; and the interior of the soft package shell is filled with an electrolyte. Due to the fact that the Z-shaped folding manner is adopted without reel stress, the homogeneity of product is good, and the homogeneity in an assembly line type operating manner is better than that in a traditional lamination manner.
Description
Technical field
The invention is related to lithium battery lamination production technical field, specifically a kind of soft-packaging lithium battery cores and its make work
Skill.
Background technology
Soft pack cell (also known as " polymer battery core "), is widely present in some small size digital products.
The structure of current soft pack cell includes two kinds of laminated structure and wound form structure.
It is to form positive plate, barrier film, negative plate composition superposition in common laminated structure, its septation is disconnected
Open, barrier film is typically cut into the thin slice slightly larger than pole piece by the lamination of this structure, is then successively superimposed,
There is a problem of that lithium ion bypasses barrier film in the surrounding of barrier film, larger is affected on the charge-discharge performance of battery core.
In common wound form structure, positive plate, barrier film and negative plate be continuous strip, three superposition, then around
One center is wound, and forms a flat structure, and the canoe of this structure has reel stress, prolonged application
During, it may appear that arch camber, buckling phenomena, the generation of this phenomenon is due to the tensioning in winding process between each winding layer
Dynamics is inconsistent to be caused.
All there is certain technical advantage and technological deficiency in both the above mode, idea of the invention is that providing one kind more
Plus outstanding scheme.
The content of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of soft-packaging lithium battery cores and its processing technology, for square
The lamination of soft package lithium battery makes, there is provided a kind of processing technology of new way, more convenient, in hgher efficiency, effect is more
It is good, and the isolation effect of soft-packaging lithium battery cores, puncture-resistant effect are more preferable.
The technical solution adopted for the present invention to solve the technical problems is：
Soft-packaging lithium battery cores, including positive plate, negative plate, barrier film and Soft Roll shell, it is characterised in that
The barrier film includes the first barrier film and the second barrier film, and between first barrier film and the first barrier film positive plate is provided with
(A) surrounding, and in positive plate is packaged to form mode separation strapping by heat seal mode, and the mode separation strapping is in the way of Z-fold
In being arranged on Soft Roll shell, and negative plate is accompanied between two adjacent mode separation strappings；
The anode ear welded on the positive plate extends to Soft Roll outer side after through barrier film band edge；
The negative electrode lug welded on the negative plate extends to the outside of Soft Roll shell；
And in Soft Roll enclosure filled with electrolyte.
The processing technology of soft-packaging lithium battery cores, it is characterised in that sequentially follow the steps below：
Step one, mode separation strapping makes
First barrier film relieving mechanism first discharges the first barrier film, and the first barrier film falls in traction belts and tiles, Ran Houtong
The first continuous way release device release positive plate is crossed, each other axial symmetry is arranged adjacent positive plate, then is discharged by the second barrier film
Mechanism discharges the second barrier film, and positive plate (A) is encapsulated between first, second barrier film by the first continuous way release device, leads to
Cross electronic dividing plate control and cause it is adjacent between positive plate (A) spacing control at 2 millimeters, finally using heat device to positive pole
The surrounding of piece carries out heat seal, and the positive plate is fixed between two-layer barrier film and is interrupted, is uniformly distributed, and forms mode separation strapping；
Step 2, lamination makes
The mode separation strapping is carried out into Z-shaped continuous folding by fold mechanism, and passes through the second continuous way while folding
Release device release negative plate (B), the second continuous way release device is two, and respectively from front and rear sides to mode separation strapping
Interior release negative plate (B), the mode separation strapping after calculating the quantity of positive plate by Scissoring device severing, last collated formation
The lamination that mode separation strapping, negative plate are neatly superimposed；
Step 3, lamination prepackage
Described lamination is fitted in Soft Roll shell, and the anode ear on all positive plates is welded to form one, by institute
There is the negative pole lug welding on negative plate to form one, the merging of Soft Roll shell localized heat is left into an implementation of port and one goes out liquid
Mouthful,
Step 4, electrolyte fill is encapsulated with Soft Roll shell
By the way that electrolyte charging device is to the continuous topping up of Soft Roll inside the shell and displaces all inner airs,
Soft Roll shell is packaged by way of heat seal.
The first barrier film relieving mechanism is made up of let off roll, idler roller and nip rollss, the first barrier film position of web-like
It is laid in naturally in traction belts on let off roll and after idler roller and nip rollss.
The second barrier film relieving mechanism and the first barrier film relieving mechanism have identical structure.
The heat device includes cutter, quadrilateral connecting rod mechanism and the first cylinder, wherein, the cutter is a rectangle
Frame, the heat seal cutter is fixed in a heat seal frame, has the electrical heating that heat seal is carried out to positive plate surrounding in heat seal frame
Element, the heat seal frame upside is installed by one parallelogram linkage, an end of the parallelogram linkage
Portion stretches out and is hinged with frame, the parallel-crank mechanism have in the presence of the first cylinder one wave it is dynamic
Make, and during waving, the heat seal frame is in all the time horizontality.
The electronic dividing plate includes dividing plate and controlled motor, lead column, and the thickness of the dividing plate in the electronic dividing plate is arranged
For 2 millimeters, the dividing plate has up and down action under controlled motor driving along lead column.
The fold mechanism includes riser, connecting rod and electric linear push rod, wherein, the riser lower end is articulated in frame and sets
Standby upper, the middle part and top of the riser connect respectively connecting rod by way of being hinged, and parallel-crank mechanism are formed, when vertical
The mode separation strapping of state in place after, the fold mechanism action carries out the break-in of mode separation strapping and folds.
The first continuous way release device includes casing, base plate, raising plate, lifting body and ejecting mechanism, wherein, institute
It is rectangular ceramic case to state casing, and in the longitudinal direction, the length of the cabinets cavity is less than 2 millimeters of positive pole leaf length, width side
Equal upwards, after being put into when positive plate, positive plate has in the longitudinal direction a slightly raised trend,
In casing upper end, open-mouth is provided with a pair of draw-in grooves, and two draw-in grooves are oppositely arranged and are fixed on the upper edge of casing
Place, positive plate both sides edge draw-in groove is slidably；
One top board is set in the upper end of casing, the lower surface of the top board is the arcwall face being recessed upwards, and radian with
The radian of raising plate is identical,
Wherein the first breach avoided to the electrode outlet on positive plate is provided with a draw-in groove, while
It is provided with casing and aligns the second breach that electrode lead-out part point is avoided；
The raising plate is arc, and the upper surface of arc is provided with soft copper layer, and downside is lead column, lead column two
Side arranges with teeth；
A base plate is installed by way of being articulated and connected at the lower open mouth of casing, base plate can be with folding, open state
Under, positive plate is filled to box house, under closure state, for the jacking of positive plate；It is provided with the centre position of base plate
One circular hole, the lead column passes through circular hole, is provided with another symmetrically arranged gear on the downside of base plate, the gear with lead
It is engaged to the tooth on post, two gears are driven respectively by a pair oppositely arranged angular wheels by the first servomotor；
First guide plate and the second guide plate are respectively arranged with rear side on front side of casing draw-in groove, described second is oriented to
Ejecting mechanism is installed, wherein ejecting mechanism includes cylinder, head board and link on plate, wherein, the head board be thickness with
The equal alloy sheets of positive plate or ceramic wafer, the release front edge of board is inserted in draw-in groove, and rear end is by link and cylinder
Piston be attached, the reciprocating motion of head board is promoted by the action of cylinder.
The second continuous way release device has identical structure with the first continuous way release device.
The invention has the beneficial effects as follows：
1st, lamination high degree of automation, whole process is all automatically performed by machine, without the need for human intervention, improves production
Automatic level, efficiency improve.
2nd, due to using Z-fold mode, there is no reel stress, good product consistency, the operating type of pipeline system
It is better than traditional lamination process concordance.
3rd, efficiency high, the release of whole process barrier film, positive plate release, heat seal, negative plate release, by once, efficiency is carried
It is high by 50%.
4th, using special pole piece release device, positive and negative plate rate of release is fast, and not damaged, disclosure satisfy that actual need
Will.
Description of the drawings
Fig. 1 is lamination design sketch.
Fig. 2 is monolithic positive plate (negative plate) axonometric chart.
Fig. 3 is lamination schematic diagram.
Fig. 4 is one of lamination process.
Fig. 5 is lamination manufacturing process simulation drawing.
Fig. 6 is lamination production-line arrangement figure.
Fig. 7 is membrane unwinding roll end schematic diagram.
Fig. 8 is idler roller structure chart.
Fig. 9 is the axonometric chart of heat device.
Figure 10 is the front view of heat device.
Figure 11 is the axonometric chart of Scissoring device.
Figure 12 is the front view of Scissoring device.
Figure 13 is the axonometric chart of fold mechanism.
Figure 14 is three-dimensional Fig. 1 of continuous way pole piece release device.
Figure 15 is three-dimensional Fig. 2 of continuous way pole piece release device.
Figure 16 is three-dimensional Fig. 3 of continuous way pole piece release device.
Figure 17 is the sectional view of continuous way pole piece release device.
Figure 18 is the fundamental diagram of continuous way pole piece release device.
Figure 19 arranges platform schematic diagram for storage.
Figure 20 is lamination process flow chart.
Figure 21 is the schematic diagram that the air of electrolyte zero rushes liquid device.
Figure 22 is the structure chart that soft-package battery accommodates and shakes mechanism.
Figure 23 is soft-package battery cored structure schematic diagram.
In figure：1 barrier film release part, 11 first barrier film relieving mechanisms, 111 let off roll, 1111 nylon jackets, 112 idler rollers,
113 nip rollss, 12 second barrier film relieving mechanisms, 11 ' first barrier films, 12 ' second barrier films, 2 positive plates release part, 3 heat seal portions
Point, 31 cutters, 32 quadrilateral connecting rod mechanisms, 33 first cylinders, 34 heat seal frames, 35 pin joints, 4 negative plates release part, 5 arrange
Part, 6 reduce part, 61 gantry type frames, 62 cut-off knives, 63 second cylinders, 64 enumerators, 65 sheet metals, 66 sheet rubbers, 67 knives
Groove, 71 times traction belts, carry-over pinch rolls on 711,72 electronic dividing plates, 73 fold mechanisms, 731 risers, 732 connecting rods, 733 electric linears
Push rod, 8 storages arrange platform, 81 supporting plates, 82 elevating mechanisms, 83 assistant cylinders, 84 finishing plates, 9 continuous way release devices, 91 casees
Body, 911 draw-in grooves, 912 top boards, 913 first breach, 913 ' second breach, 92 base plates, 921 gears, 923 angular wheels, 922
One servomotor, 93 raising plates, 94 lifting bodies, 95 ejecting mechanisms, 951 cylinders, 952 head boards, 953 links, 901 first
Guide plate, 902 second guide plates, 101 electric pumps, 102 electrolyte storage tanks, 103 filters, 104 soft-package batteries accommodate and concussion
Mechanism, 1041 shock platforms, 1042 left and right reciprocal blessing plates, 1043 rocking arms, 1,044 first eccentrics, 1045 Damper Braces bars,
1046 push rods, 1,047 second eccentrics, 100 Soft Rolls.
Specific embodiment
Due to the difference of each manufacturer's production technology, polymer lithium electricity in the market is divided into takeup type (Sony, Toshiba
To represent), stacked (TCL, ATL are representative) two kinds of different structures.
Existing laminating machine and lamination principle are all successively video discs, i.e. using a continuous barrier film, barrier film is used folded
Piece machine carries out Z-shaped bending, and positive plate and being implanted in barrier film interlayer for negative plate interval are formed into lamination, and this mode works
Inefficiency, although automaticity can be improved, is still difficult to meet efficient production.
Common mentality of designing is to improve the feeding efficiency of barrier film, i.e. using continuous, the continuous film feeding of high speed, carried
High production capacity.
But traditional method is defective, problem is, when film feeding speed is reached after 1 meter per second, because barrier film has
Certain elasticity, certainly exists restoring force during high-speed coiling, cause stress, i.e. the lamination after winding, electrode can be wrapped up in
Tightly, buckling phenomena is caused.
For existing defect, the subject matter of the present invention is as follows：
Exploitation is a kind of soft pack cell and its processing technology, and theoretically, it is continuous that efficiency raising should be single-layer septum
It is more than the twice of lamination.
Exploitation is a kind of Soft Roll shell lithium cell, positive plate and the completely isolated encapsulation of negative plate, and in metal shell
Surface arranges insulating coating, and the cushion space of foam material, improves encapsulation quality.
Below by being introduced to its processing technology, referring to figs. 1 to Figure 20, its basic principle is, using bilayer every
The mode that film is superimposed simultaneously, positive plate therein or negative plate are superimposed in advance between two barrier films, then by heat seal
Preliminary encapsulation is carried out, is then folded over, be implanted into another negative plate or positive plate again in folding process, form what is be combined
Lamination effect, enters lamination is formed after arrangement, and the lamination of formation is packaged again with metal shell, welding electrode.
While folding, heat sealing can be carried out to the barrier film of first overlapping so that positive/negative plate is isolated from each other, and carries
High isolation effect between the two.
Simultaneously for the lamination speed of high speed, traditional sucking disc type mechanical hand cannot adapt to quick, continuous positive plate
Or the supply of negative plate, the carrying part of electrode slice is redesigned, to reaching the purpose of global optimization.
Based on the description above, there is provided a kind of lamination machinery, for the making of soft pack cell：As shown in Fig. 1 to Figure 20,
Including barrier film release part 1, positive plate release part 2, heat sealed portion 3, negative plate release part 4, finishing part
5th, part 6 and transport portion are reduced.
Barrier film release part 1 includes the first barrier film relieving mechanism 11, the second barrier film relieving mechanism 12, barrier film release part
Effect is with rational sequence one after another and speed the barrier film of rolling to be discharged, flatten, tiled.
Wherein the first barrier film relieving mechanism 11 is made up of let off roll 111, idler roller 112 and nip rollss 113, and the second barrier film is released
Laying mechanism is identical with the first barrier film relieving mechanism.
Wherein the first barrier film relieving mechanism 11 first discharges the first barrier film 11 ', after tiling, then discharges positive plate, then discharges
Second barrier film 12 ', positive plate A is encapsulated between two-layer barrier film, and is positioned, and finally carries out heat seal, forms being interrupted, equal
Even spaced positive plate, the spacing between two of which positive plate is arranged on 2 millimeters, and 2 millimeters of the interval is logical
Cross what electronic dividing plate was realized.
Membrane unwinding roller 111 is adopted determines torque buffer technology, i.e. the motor of let off roll 111 is servo digitalization electricity
Machine, can be digitized control, and row buffering is entered using determining moment device between let off roll 111 and motor power axle, determine power
Moment device structure includes：Inside and outside two nylon jackets 1111 being nested with, realize determining torque by the damping force arranged between nylon jacket
Transmission, under normal circumstances, keeps friction law, geo-stationary when driving torque exceedes setting torque, to realize between nylon jacket
Skid, prevent what excessively transmission from causing to barrier film excessively to tear, with reference to Fig. 7.
Idler roller 112 is using flexible tensioner technology, i.e. idler roller is a composite roll, and middle mandrel is steel shaft, steel shaft
Outer surface is set to quality of rubber materials, and mandrel two ends are arranged in frame by bearing.
Used as a kind of replaceable scheme, above-mentioned idler roller is the compositionss of flexible axle and rubber sleeve, and in the appearance of flexible axle
Face covers rubber sleeve, wherein, the curvature control of idler roller is unclamped in barrier film by rotating in R2 rice, prevents tension.Installing
During, flexible axle keeps two ends to keep certain angle.
Further, above-mentioned idler roller 112 adopts eccentric structure, i.e. described idler roller sheet as an eccentric rollers,
Eccentricity is controlled at 1 centimetre, and by eccentric transfer regularity lax purpose is realized, wherein, one end of idler roller installs one
Gear, gear is directly driven by a motor, and the electrode at this place is run with the motion of pulsed, drives idler roller to have interruption
Start and stop shake action, reaches the purpose of uncoiling, with reference to Fig. 8.
After uncoiling, there is no resilience in the first barrier film 11 ' being laid in lower traction belts in free flat
Stress.
It is super smooth roll to planish roller 113, and roller surface fineness therein reaches R1.6 (roughness), and diameter is not less than 1 meter,
Realize that cladding angle is not less than 90 degree, smoothly turning to for barrier film.
Second barrier film relieving mechanism 12 is identical with the first barrier film relieving mechanism, and for the release of the second barrier film 12 ', one is previous
After arrange, in the centre position of two barrier film relieving mechanisms, positive plate release part 2 and pneumatic barrier are set.
Positive plate release part 2 adopts continuous way release device 9, is labeled as the first continuous way release device, carries every time
One positive plate A, and positive plate A is placed on the first barrier film 11 ', the right setting intersected with each other of above-mentioned the first from left of positive plate one,
Wherein left positive plate is different with the position of right positive plate, and a positive and a negative is placed, and with reference to Fig. 4, it is right after the folding of positive plate to realize
Claim, be easy to the extraction of anode ear A1.Traditional sucking disc type mechanical hand has two problems, and first problem is that transporting velocity is slow, is needed
Inhale, carry, discharging three actions, needing pneumatic system to coordinate, it is difficult to quickly finish, Second Problem is, due to positive pole
The very thin thickness of piece, the generally aluminium foil of 0.1 millimeter to 0.3 millimeter of thickness, easily produce adhesion, once carry two panels, cause
Maloperation.
Continuous way release device 9, structure includes casing 91, base plate 92, raising plate 93, lifting body 94 and ejecting mechanism
95, referring now to figs. 14 through Figure 16, wherein, above-mentioned casing 91 is rectangular box, using clean ceramic case, can be prevented to wherein
Positive plate A pollute, in the longitudinal direction, the length of cabinets cavity is less than 2 millimeters of positive pole leaf length, phase on width
Deng after being put into when positive plate, positive plate A has in the longitudinal direction a slightly raised trend, with reference to Figure 18, due to just
Pole piece itself have certain elasticity, the resilience force with a tensioner, after positive plate is put into, the effect of raising plate in bottom
Under, positive plate raises up.
The upper end open-mouth of casing 91 is provided with the draw-in groove 911 of a pair of plastic materials, two draw-in grooves are oppositely arranged, are fixed on
At the upper edge of casing, the sides of positive plate A two can be in draw-in groove 911 slidably.
The position of draw-in groove 911, disclosure satisfy that moving freely for positive plate just, i.e. one positive plate of conveying every time,
Be not in the situation of multi-disc due to the restriction of draw-in groove local width.
A top board 912 is set in the upper end of casing 91, the lower surface of top board 912 is the arcwall face being recessed upwards, and arc
Degree is identical with the radian of raising plate 93, and this region is the recovery region of positive plate, and in this region, positive plate A launches, after flattening
The sides of positive plate A two are inserted in slot.
It is provided with the first breach 913 avoided to the electrode outlet on positive plate in a draw-in groove 911 wherein,
The second breach 913 ' avoided to electrode lead-out part point is provided with casing 91 simultaneously, for the extraction of electrode.
Raising plate 93 is the arc of a metal material, and the upper surface of arc 93 is provided with soft copper layer, arc
Lower surface is provided with a horizontal reinforcement, draws a columned lead column 931, lead column both sides on reinforcement downwards
Arrange with teeth 932.
A base plate 92 is installed by way of being articulated and connected at the lower open mouth of casing 91, base plate can be with folding, opening
Under state, positive plate A is filled to box house, under closure state, for the jacking of positive plate.
The centre position of base plate 92 is provided with a circular hole, above-mentioned lead column passes through circular hole, in the downside of base plate
Another symmetrically arranged gear 921 is provided with, gear 921 is engaged with the tooth 932 in lead column, forms transmission.Two teeth
Wheel is driven respectively by a pair of angular wheels 923 by the first servomotor 922.
On front side of the draw-in groove of casing 91 and rear side is respectively arranged with first guide plate 901 and the second guide plate 901, first
The effect of guide plate 901 is that positive plate is delivered at purpose, and malleation is provided with the downside of the first guide plate
Sealed gas chamber, the air inlet of sealed gas chamber is attached by an electromagnetic valve of gas circuit and malleation gas bag, by electromagnetic valve of gas circuit
To make-up gas in sealed gas chamber, inside and outside nozzle installing hole is provided with the first guide plate, in nozzle installing hole
Nozzle is installed, nozzle is not uniformly known in the first guide plate, wherein the structural reference figure of nozzle, the air pressure control of sealed gas chamber
At 0.2 MPa or so, brushed by gas, for balancing pole piece deadweight, mitigate the frictional resistance of pole piece and the first guide plate, protected
Card pole piece quality is in excellent rank.
The effect of the second guide plate 902 is to install ejecting mechanism 95, and wherein ejecting mechanism includes cylinder 951, head board
952 and link 953, wherein, head board 952 is the thickness alloy sheets equal with positive plate or ceramic wafer, release front edge of board
In being inserted into draw-in groove 911, rear end is attached by link 953 with the piston of cylinder.Promoted by the action of cylinder and released
The reciprocating motion of plate.
Further, above-mentioned head board 952 has two extreme positions, and initial threshold position is located at the effective of positive plate
Beyond region, final position is located at the release region of positive plate.
The top of lower traction belts 71 for discharging position in positive plate arranges the electronic dividing plate 72 of an Electronic control, it is electronic every
Plate includes dividing plate and controlled motor, lead column, and the thickness of the dividing plate in electronic dividing plate is set to 2 millimeters, is do not have obtuse angle structure,
Dividing plate is fastened between two adjacent positive plates, forms spacing positioning, it is ensured that the spacing uniformity of two pole pieces.It is electronic every
Plate 72 has up and down action process, and concrete structure refers to cut-off knife mechanism, is planer type structure, and cutter therein is changed into necessarily
The dividing plate of thickness, here is omitted.
Heat sealed portion 3 is set in the rear side of the second barrier film relieving mechanism 12, heat sealed portion is the heat seal of electrical heating heat seal pattern
Mechanism, the mechanism includes cutter 31, the cylinder 33 of quadrilateral connecting rod mechanism 32 and first, wherein, cutter 31 is a rectangle frame, on
State heat seal cutter to be fixed in a heat seal frame 34, there are electrical heating elements in heat seal frame, cutter can be heated to 200 and be taken the photograph
Family name's degree, it is sufficient to which barrier film is formed into partial melting, forms heat seal, and a parallelogram linkage is installed in the upside of heat seal frame 34
32, an end of parallelogram linkage stretches out and is hinged with frame, i.e. pin joint 35 in Fig. 9, and this is parallel
Quadrangular mechanism has an action waved in the presence of the first cylinder 33, and during waving, heat seal frame 34 is all the time
In horizontality.
Simultaneously adjacent to two positive plate of heat seal cutter carries out heat seal, and the structure chart of heat device refers to Fig. 9 and Figure 10
It is shown.
Heat seal frame can adopt the structure with buffer technology, and buffer spring is inlaid with heat seal frame in sight, realize automatic
Buffering.
After heat seal, diaphragm strip C that inner clamps hold positive plate is formed, diaphragm strip C is referred to, by continuous two diaphragm clips
Positive plate composition is held, wherein positive plate is equidistantly uniformly arranged, form some continuous laminations.
It is pull roll assembly in the rear side of heat seal cutter, above-mentioned pull roll assembly includes upper carry-over pinch rolls 711 and lower traction
Belt 71, lower traction belts can be moved under the driving of power motor, and the barrier film above drive is moved, with reference to figure
6。
Upper carry-over pinch rolls 711 adopt step motor drive, and upper traction roller surface is rubber cladding, and is set on the surface of rubber rollers
Decorative pattern is equipped with, traction dynamics are improved.
Cutting part 6 is provided with rear side of pull roll assembly, the cutting part is pneumatic type Scissoring device, the device includes
Gantry type frame 61, on gantry type frame arrange cut-off knife 62, gantry frame the second cylinder 63 effect under can folding up and down,
Complete cutting action, for example, each battery core is made up of 50 positive/negative plates, then each 50 pole piece carries out severing, be with
Total number, in the front side of Scissoring device or rear side an enumerator 64, the preferred magnetic strength enumerator of enumerator, by sensing are arranged
The number count of pole piece, for controlling the thickness of lamination.
To coordinate cut-off knife cutting, it is provided with the platform immediately below cut-off knife in a cutter groove 67, cutter groove and places flexible rubber cushion,
Cutting regularity is improved, and protects cut-off knife.
The sheet rubber 66 of one flexibility of bonding on rear side of a sheet metal 65, steel-sheet is provided with rear side of Scissoring device,
Sheet rubber 66 is in the half of hang, and sagging length for pole piece width under self-acting, with reference to Figure 11 and Figure 12.
One being placed with the side-lower position of the rear side of sheet rubber 66 and receiving arrangement platform 8, storage arranges platform with certainly
Dynamic elevating function, including supporting plate 81, elevating mechanism 82, detection switch, wherein elevating mechanism are located at the downside of supporting plate 81, for holding in the palm
The raising and lowering of plate 81, detection switch is used to detect the quantity of the diaphragm strip on supporting plate, and feeds back to control system, for controlling
The decline of supporting plate processed, often fall next lamination, and supporting plate declines the height of a lamination thickness, progressively declines automatically.In supporting plate 81
The left and right sides be respectively arranged with a baffle plate, baffle plate is used to limit position of the lamination in left and right orientation, because lamination is continuous
, so carrying out in the lateral direction thick spacing.
Both sides are provided with an assistant cylinder 83 before and after storage arranges platform 8, and on the piston rod of assistant cylinder one is installed
The individual finishing plate 84 being vertically arranged, when lamination in place after, by the reciprocal vibrations of two assistant cylinders, to barrier film lamination before and after
Both sides carry out concussion arrangement, improve neat degree, and wherein assistant cylinder is controlled on 50 left sides per minute from vibration frequency
It is right.
Both sides respectively arrange a negative plate release part 4, negative plate release part-structure before and after storage arranges platform
It is identical with positive plate release part-structure, all it is the continuous way relieving mechanism 9 for adopting, a piece of negative plate is adsorbed every time, realize fortune
Turn.
From unlike positive plate release part, the guide plate of wherein negative plate release part is in heeling condition, can be with
Easily released, facilitate negative plate quick in place.
Every time one negative plate of placement at both sides interval discharges part before and after.
Be provided with a fold mechanism 73 on front side of sheet rubber below Scissoring device, fold mechanism 73 include riser 731,
Connecting rod 732 and electric linear push rod 733, wherein, the lower end of riser 731 is articulated on chassis equipment, the middle part and top of riser 731
Connect connecting rod by way of being hinged respectively, form parallel-crank mechanism, and the sheet rubber formation to top is lifted, it is to avoid rubber
Film is out of control.When vertical state diaphragm strip in place after, the action of fold mechanism 73 carries out the break-in of lamination and folds, and realizes folding
Folded 90 degree, while folding, the insertion of both sides negative plate before and after realization is often folded once, is inserted one from the left and right sides and is born
Pole piece.
Above-mentioned fold mechanism can be substituted using horizontally disposed cylinder, and cylinder is fixed on equipment, then by gas
Lamination is carried out cylinder piston the superposition of intermittent, forms lamination.
The course of work is such：
First, the first barrier film relieving mechanism first discharges the first barrier film, and the first barrier film after release tiles in a natural manner
In lower traction belts, then the first barrier film discharges positive plate without expanding force, and 2 millimeters of left sides are kept between positive plate and positive plate
Right spacing, 2 millimeters of the interval is realized by pneumatic barrier, then discharges the second barrier film, the second barrier film without expanding force,
Positive plate is encapsulated between two-layer barrier film, heat seal is finally carried out, heat seal point is located at the edge of positive plate, and avoids electrode portion
Point, interruption, spaced positive plate are formed, the spacing between two of which positive plate is arranged on 2 millimeters, forms solid
Fixed mode separation strapping, the positive plate in mode separation strapping is independent of one another and spaced.
Then riser swings in the form of a pulse in fold mechanism, often swings a lamination mode separation strapping and folds once, and
While folding, both sides are implanted into a negative plate simultaneously before and after, form lamination, eventually pass the shape for arranging formation rule
Shape.
Soft-packaging lithium battery cores and its processing technology
The above-mentioned lamination folded is carried out into electrode welding and forms one, welding adopts Pressure Welding, and it is firm to weld, then will be upper
Lamination is stated using being put in a soft bag after barrier film parcel, electrolyte injection is then carried out, is finally packaged, encapsulation process
In electrode area increase electrode insulation set, formed soft-package battery.The soft-package battery has following structure：
Positive plate and negative plate interval setting, and one layer of barrier film is provided between the two, formed after barrier film heat seal, positive plate
With the electrode of negative plate independently bunchy, and outside is led to, Soft Roll band is the macromolecule resin material with insulating properties.
Soft package lithium battery processing technology,
Step one, is obtained positive plate and negative plate is stand-by through coating, cutting,
Step 2, preparation width be positive plate, the barrier film of 1.2 times of negative pole leaf length, it is stand-by
Step 3, above-mentioned first barrier film is laid in the lower traction belts of a continuous motion, while positive plate is occupied
In be uniformly placed on the first barrier film, above-mentioned positive plate uniform intervals are arranged using the mode of craft or machinery,
Compartment reserves 2 millimeters of surplus per side away from being maintained at 2 millimeters,
Step 4, the second barrier film is uniformly covered on the first barrier film, and to positive plate all standing is formed, and uses heat seal
Cutter carries out heat seal to the barrier film of positive plate surrounding, and heat seal process avoids electrode area, and continuous mode separation strapping is formed Jing after heat seal,
Spaced apart positive plate is formed in mode separation strapping,
Step 5, above-mentioned mode separation strapping is folded according to Z-shaped mode, and negative plate is inserted during folding, wherein
The electrode superposition of above-mentioned negative plate, the electrode superposition on positive plate, forms appearance as shown in Figure 1,
Step 6, is bundled after lamination is arranged using barrier film, forms square, and is put in a soft bag,
Step 7, soft bag is put in filling machine carries out pressing arrangement, formation rule shape, and carries out electrolyte
Fill,
Step 8, carries out heat seal encapsulation after static 1 to 2 hour, by the steam vent row on Soft Roll band after heat seal encapsulation
Except internal air, through repeatedly continuously rushing liquid, discharge opeing, the air of inside is excluded completely, finally steam vent is packaged.
A kind of air charging device of electrolyte zero, with reference to Figure 21, the device includes following structure：
Electric pump 101, electrolyte storage tank 102, filter 103, soft-package battery accommodate and concussion mechanism 104, wherein, electric pump
101 is the topping-up pump of model E2-R20B of UBA (excellent despot) brand, and electric pump extracts electrolyte into soft-package battery, by mistake
Filter 103 is filtered, and filter is double parallel constructions, with one for one, wherein, soft-package battery accommodates includes that vibrations are flat with concussion mechanism
Platform 1041, left and right reciprocal blessing plate 1042, motor, above-mentioned shock platforms 1041 are arranged with by a rocking arm
1043, the upper end of rocking arm is arranged on shock platforms middle part, and lower end is arranged on first eccentric 1044, meanwhile, in vibrations
Four corners of platform are provided with Damper Braces bar 1045, and Damper Braces bar refers to flexible with elasticity with telescopicing performance
Bar, above-mentioned first eccentric is controlled by a motor, and under the rotation of the first eccentric, above-mentioned shock platforms are in shake
Dynamic state.
The rotary cylinder of the left and right sides action simultaneously while fluid injection, rotary cylinder drives the second eccentric 1047, the
Soft Roll is back and forth clamped in release by driving push rod 1046, push rod resilience in the presence of stage clip for two eccentrics, this
Process is conducive to driving out of for the bubble in Soft Roll 100, with reference to Figure 22.
One circulation of maintenance is should ensure that during whole fill, at least ensures that there is no longer bubble is forced out.
Then the air vent of Soft Roll is blocked, closure mode is heat seal, forms permanent closure.
One reinforced sealing is set in the outside of Soft Roll heat seal position, the soft-package battery core of formation is with reference to shown in Figure 23
Structure.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of without departing from design spirit of the present invention, various changes of the relevant technical staff in the field to the present invention
Shape and improvement, all should expand in the protection domain as determined by claims of the present invention.
Claims (9)
1. soft-packaging lithium battery cores, including positive plate, negative plate, barrier film and Soft Roll shell, it is characterised in that
The barrier film includes the first barrier film (11 ') and the second barrier film (12 '), is provided between first barrier film and the first barrier film
Positive plate (A), and the surrounding in positive plate is packaged to form mode separation strapping by heat seal mode, the mode separation strapping is with Z-fold
Mode be arranged in Soft Roll shell, and accompany negative plate between two adjacent mode separation strappings；
The anode ear welded on the positive plate extends to Soft Roll outer side after through barrier film band edge；
The negative electrode lug welded on the negative plate extends to the outside of Soft Roll shell；
And in Soft Roll enclosure filled with electrolyte.
2. the processing technology of soft-packaging lithium battery cores described in claim 1, it is characterised in that sequentially follow the steps below：
Step one, mode separation strapping makes
First barrier film relieving mechanism (11) first discharges the first barrier film (11 '), and the first barrier film (11 ') falls in traction belts and puts down
Paving, then by positive plate release part release positive plate, each other axial symmetry is arranged adjacent positive plate, then by the second barrier film
Relieving mechanism (12) discharge the second barrier film (12 '), by positive plate release part by positive plate (A) be encapsulated in first, second every
Between film, by electronic dividing plate control and cause it is adjacent between positive plate (A) spacing control at 2 millimeters, finally using heat seal
Mechanism carries out heat seal to the surrounding of positive plate, and the positive plate is fixed between two-layer barrier film and is interrupted, is uniformly distributed, and is formed
Mode separation strapping；
Step 2, lamination makes
The mode separation strapping is carried out into Z-shaped continuous folding by fold mechanism (73), and is discharged by negative plate while folding
Part release negative plate (B), negative plate release part is two, and respectively from front and rear sides to mode separation strapping in release it is negative
Pole piece (B), the mode separation strapping after calculating the quantity of positive plate by Scissoring device severing, last collated formation mode separation strapping,
The lamination that negative plate is neatly superimposed；
Step 3, lamination prepackage
Described lamination is fitted in Soft Roll shell, and the anode ear on all positive plates is welded to form one, will be all negative
Negative pole lug welding on pole piece forms one, Soft Roll shell localized heat is merged and leaves an implementation of port and a liquid outlet,
Step 4, electrolyte fill is encapsulated with Soft Roll shell
By the way that electrolyte charging device is to the continuous topping up of Soft Roll inside the shell and displaces all inner airs,
Soft Roll shell is packaged by way of heat seal.
3. processing technology according to claim 2, it is characterised in that the first barrier film relieving mechanism (11) is by let off roll
(111), idler roller (112) and nip rollss (113) are constituted, and first barrier film of web-like is located on let off roll and through idler roller
It is laid in naturally in traction belts with after nip rollss.
4. processing technology according to claim 3, it is characterised in that the second barrier film relieving mechanism is released with the first barrier film
Laying mechanism has identical structure.
5. processing technology according to claim 2, it is characterised in that the heat device includes cutter (31), tetragon
Linkage (32) and the first cylinder (33), wherein, the cutter (31) is a rectangle frame, and the heat seal is fixed on cutter
In one heat seal frame (34), there is the electrical heating elements that heat seal is carried out to positive plate surrounding, the heat seal frame (34) in heat seal frame
A parallelogram linkage (32) is installed in upside, and an end of the parallelogram linkage stretches out simultaneously
It is hinged with frame, the parallel-crank mechanism has an action waved in the presence of the first cylinder (33), and waves
During, the heat seal frame (34) is in all the time horizontality.
6. processing technology according to claim 2, it is characterised in that the electronic dividing plate include dividing plate and controlled motor,
Lead column, the thickness of the dividing plate in the electronic dividing plate is set to 2 millimeters, the dividing plate (72) under controlled motor driving along
Lead column has up and down action.
7. processing technology according to claim 2, it is characterised in that the fold mechanism (73) includes riser (731), even
Bar (732) and electric linear push rod (733), wherein, riser (731) lower end is articulated on chassis equipment, the riser
(731) middle part and top connects respectively connecting rod by way of being hinged, and forms parallel-crank mechanism, when vertical state every
Film strips in place after, the fold mechanism (73) action carries out the break-in of mode separation strapping and folds.
8. processing technology according to claim 2, it is characterised in that the positive plate release part include casing (91),
Base plate (92), raising plate (93), lifting body (94) and ejecting mechanism (95), wherein, the casing (91) is rectangular ceramic case,
In the longitudinal direction, the length of the cabinets cavity is less than 2 millimeters of positive pole leaf length, equal on width, is working as positive plate
After being put into, positive plate (A) has in the longitudinal direction a slightly raised trend,
In casing (91) upper end, open-mouth is provided with a pair of draw-in grooves (911), and two draw-in grooves are oppositely arranged and are fixed on the upper of casing
Edge, positive plate (A) both sides edge draw-in groove (911) is slidably；
A top board (912) is set in the upper end of casing (91), the lower surface of the top board (912) is the arc being recessed upwards
Face, and radian is identical with the radian of raising plate (93),
Wherein the first breach (913) avoided to the electrode outlet on positive plate is provided with a draw-in groove (911),
It is provided with casing (91) simultaneously and aligns the second breach (913 ') that electrode lead-out part point is avoided；
The raising plate (93) is arc, and the upper surface of arc (93) is provided with soft copper layer, and downside is lead column
(931), lead column both sides arrange (932) with teeth；
A base plate (92) is installed by way of being articulated and connected at the lower open mouth of casing (91), base plate can be with folding, opening
Under state, to box house filling positive plate (A), under closure state, for the jacking of positive plate；In the centre of base plate (92)
Position is provided with a circular hole, and the lead column passes through circular hole, another symmetrically arranged gear is provided with the downside of base plate
(921), the gear (921) is engaged with the tooth (932) in lead column, and two gears are oppositely arranged by a pair respectively
Angular wheel (923), is driven by the first servomotor (922)；
First guide plate (901) and the second guide plate (901), institute are respectively arranged with casing (91) draw-in groove front side and rear side
State and install on the second guide plate (902) ejecting mechanism (95), wherein ejecting mechanism includes cylinder (951), head board (952) and connects
Frame (953) is connect, wherein, the head board (952) is the thickness alloy sheets equal with positive plate or ceramic wafer, the head board
Front end is inserted in draw-in groove (911), and rear end is attached by link (953) and the piston of cylinder, and cylinder promotes head board
Move back and forth.
9. processing technology according to claim 8, it is characterised in that the positive plate release part and negative plate release portion
Dividing has identical structure.
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|---|---|---|---|
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Effective date of registration: 20191204 Address after: 064200 No.1, row 1, bangkuan line, Jianming Town, Zunhua City, Tangshan City, Hebei Province Applicant after: Hebei zero point Amperex Technology Limited Address before: Room 2-201, Building 6, Pearl Garden South, Zhonghua West Road, Heze City, Shandong Province Applicant before: Kong Jinhe |