CN108199079A - Single battery is realized high capacity process and is prepared and plate-type battery group preparation method - Google Patents
Single battery is realized high capacity process and is prepared and plate-type battery group preparation method Download PDFInfo
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- CN108199079A CN108199079A CN201810037083.XA CN201810037083A CN108199079A CN 108199079 A CN108199079 A CN 108199079A CN 201810037083 A CN201810037083 A CN 201810037083A CN 108199079 A CN108199079 A CN 108199079A
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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
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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
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
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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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Abstract
It realizes high capacity process the invention discloses a kind of single battery and prepares and include positive plate (3) diaphragm (4) negative plate (6) insulating film (5) ... positive plate (3) diaphragm (4) negative plate (6) insulating film (5) and single battery flexible packaging film (8) with plate-type battery group preparation method, high power capacity single battery；Wherein, diaphragm (4) is interval in successively between positive plate (3) and negative plate (6), and insulating film (5) is interval in successively between negative plate (6) and positive plate (3)；Aluminum plastic film (shell) is wrapped in outermost；Anode includes plus plate current-collecting body and active material first layer, active material first：95.0% 99.0%, conductive agent：0.5% 3.0%, binding agent：0.5%‑2.0%；Cathode includes negative current collector and active material second layer, active material second：95.0% 99.0%, conductive agent：0.5% 2.0%, thickener：0 1.0%, binding agent：0.5‑3.0%.Single battery high power capacity of the present invention is high and volume energy density and high rate performance are also higher.
Description
Technical field
The present invention relates to a kind of battery production field, specifically a kind of single battery realizes high capacity process and preparation and plate
Formula battery pack preparation method.
Background technology
First commercial lithium battery was released since 1991, application has become the electronic equipment core technology for mainstream so far.
With the sternness increasingly of the increasingly depleted and environmental problem of petroleum resources, Substitute coal power station, the clean new energy of development are pure
Electric vehicle becomes the active demand that the whole world faces；But the energy content of battery under current conventional thought is difficult to meet quick again
The demand of all kinds of sci-tech products such as pure electric automobile, electric bicycle, the energy storage of distributed power generation station, the smart mobile phone of high growth.
The technology being disclosed at present is：Single battery is all single, i.e., be in single battery by positive plate-diaphragm-
One single of negative plate this three pieces composition is molding, and anode ear is drawn outside single battery from positive plate, from negative plate to list
Negative electrode lug is drawn outside body battery；Therefore the capacity of lithium titanate class single battery is 2.4 volts；The capacity of LiFePO4 class single battery
It is 3.2 volts；The capacity of three metaclass single batteries is 3.7 volts；The capacity of multiple aggregation species single battery is 4.3 volts.So
When needing high voltage, just a large amount of single battery is carried out in parallel；The volume that this has resulted in battery pack is very huge.
Therefore, the prior art can be improved well there are short slab and its huge room for improvement.
Invention content
The technical problems to be solved by the invention are：Overcome the shortcomings of background technology, a kind of simple and reasonable, list is provided
Body battery is realized high capacity process and is prepared and plate-type battery group preparation method.
The single battery of the present invention is realized high capacity process and is prepared and mainly employed using single with plate-type battery group preparation method
The design of multiple battery core parallel connection technologies and winding process in body battery, so as to increase the capacity of single battery significantly, also simultaneously
Greatly reduce battery pack, the volume of battery pack.The technical solution of high voltage single battery is as follows：It is using more in single battery
A battery core parallel connection technology and spooled laminations technique are made：According to shown in Fig. 1 sequentially include 1.:Positive plate (3)-diaphragm (4)-
Negative plate (6)-insulating film (5)-... positive plate (3)-diaphragm (4)-negative plate (6)-insulating film (5) and single battery Soft Roll
Fill film (8)；Wherein, diaphragm (4) is interval in successively between positive plate (3) and negative plate (6), and insulating film (5) is interval in negative successively
Between pole piece (6) and positive plate (3)；②:It is first that first positive plate (3) and the last one negative plate (6) is reserved；③:It connects
It the 2. to walk, according to sequence shown in Fig. 1 by negative plate (6) and positive plate (3) conductor adapting piece (9) welding ... cathode in parallel
Piece (6) and positive plate (3) are welded with conductor adapting piece (9) is in parallel, and according to required monomer battery voltage value and existing are used
Material system under conventional method the attainable monomer capability value of institute come calculate determine how many：Such negative plate (6)
With the parallel connection welding of positive plate (3)；Non-welded part between conductor adapting piece (9) and all pole pieces is between insulation board (7)
Every；④:Anode is welded together by reserved first positive pole aluminium foil collector and aluminium pole ears (1), and cathode is last by what is reserved
One negative copper foil collector and nickel lug (2) weld together；⑤:To be welded anode ear (1), negative electrode lug (2) and 3. in
The multigroup negative plate (6) and positive plate (3) that parallel connection is welded by the way of spooled laminations, are assembled into according to total sequence in 1.
Provide the more battery core monomers of winding of the number of plies；⑥:And the more battery core monomers of winding assembled in 5. are wrapped with aluminum plastic film (8)
Dress；⑦:Battery is melted into after filling electrolyte and encapsulation, aging, the single battery of required size is made.Anode is included just
Pole collector and active material first layer, active material first layer are made of the raw material of following mass percent：Active material first：
95.0%-99.0%, conductive agent：0.5%-3.0%, binding agent：0.5%-2.0%, wherein, the surface density of active material first layer is 15-
27mg/cm2, thickness are 109-177 μm.Cathode includes negative current collector and active material second layer, and active material second layer is by following
The raw material composition of mass percent：Active material second：95.0%-99.0%, conductive agent：0.5%-2.0%, thickener：0-1.0% glues
Tie agent：0.5-3.0%, wherein, the surface density 7-15mg/cm2 of active material second layer, 115-188 μm of thickness.
Applied to above-mentioned technical proposal, in the single battery, active material first is LiNixCoyMn (1-x-y) O2,
Wherein x=1/5~4/5, y=1/5~4/5, gram volume >=150mAh/g of active material first, conductive agent is conductive carbon, carbon nanometer
Any one or a few mixture in pipe, graphene and VGCF；Binding agent is PVDF.
Applied to each above-mentioned technical proposal, in the high power capacity single battery, active material second can be graphite, active
Gram volume >=330mAh/g of substance second；Conductive agent be conductive carbon, carbon nanotube, graphene and VGCF in any one or it is several
The mixture of kind；Thickener is sodium carboxymethylcellulose；Binding agent butadiene-styrene latex.
Applied to each above-mentioned technical proposal, the preparation method of high power capacity single battery, S1：Using plus plate current-collecting body and work
Property substance first layer prepares the anode of single battery：Wherein, active material first layer is made of the raw material of following mass percent：Activity
Substance first：95.0%-99.0%, conductive agent：0.5%-3.0%, binding agent：0.5%-2.0%, wherein, the face of active material first layer is close
It spends for 15-27mg/cm2, thickness is 109-177 μm；Shape first is mixed in active material first, conductive agent, binding agent and solvent
Then active material layer first layer slurry is coated on the surface of plus plate current-collecting body by Viability material layer first layer slurry, form activity
Material layer first layer, drying, then be compacted pole piece with roll squeezer, anode sheet is made, machine is then cut by institute using sheet-punching machine or film
State large stretch of anode pole piece that prescribed level is made and carries aluminum foil current collector；S2：Using negative current collector and active material second layer
Prepare the cathode of single battery：Wherein, active material second layer is made of the raw material of following mass percent：Active material second：
95.0%-99.0%, conductive agent：0.5%-2.0%, thickener：0-1.0%, binding agent：0.5-3.0%, wherein, active material second layer
Surface density 8-13mg/cm2,115-180 μm of thickness；First active material second, conductive agent, thickener, binding agent and solvent are mixed
It closes stirring and forms active material layer second layer slurry, then active material layer second layer slurry is coated on to the surface of negative current collector,
Active material layer second layer, drying are formed, then is compacted pole piece with roll squeezer, cathode sheet is made, then using sheet-punching machine or film
Machine is cut sheet is made prescribed level and carries the cathode pole piece of copper foil current collector；S3：The preparation of high power capacity single battery：According to figure
Sequence is included 1. shown in 1:Positive plate (3)-diaphragm (4)-negative plate (6)-insulating film (5)-... positive plate (3)-diaphragm
(4)-negative plate (6)-insulating film (5) and single battery flexible packaging film (8)；Wherein, diaphragm (4) is interval in positive plate (3) successively
Between negative plate (6), insulating film (5) is interval in successively between negative plate (6) and positive plate (3)；②:First by first just
Pole piece (3) and the last one negative plate (6) are reserved；③:Then it the 2. walks, according to sequence shown in Fig. 1 by negative plate (6) and positive plate
(3) negative plate (6) and positive plate (3) conductor adapting piece (9) welding in parallel are welded ... with conductor adapting piece (9) is in parallel, and
According to required monomer battery voltage value and existing material system under conventional method the attainable monomer capability value of institute
Come calculate determine how many：Such negative plate (6) and the welding in parallel of positive plate (3)；In conductor adapting piece (9) and institute
There is the non-welded part between pole piece to be spaced with insulation board (7)；④:Anode is by reserved first positive pole aluminium foil collector and aluminium
Lug (1) welds together, and cathode is welded together by reserved the last one negative copper foil collector and nickel lug (2)；⑤:
Anode ear (1), negative electrode lug (2) and multigroup negative plate (6) that 3. middle parallel connection is welded and positive plate (3) will be welded according in 1.
Total sequence by the way of spooled laminations, be assembled into the more battery core monomers of winding of the regulation number of plies；⑥:And it 5. middle will be assembled
The more battery core monomers of winding packed with aluminum plastic film (8)；⑦:Battery is melted into after filling electrolyte and encapsulation, aging,
The monomer-polymer lithium ion battery of size needed for being made.
Applied to each above-mentioned technical proposal, in the preparation method, active material first is LiNixCoyMn (1-x-y)
O2, wherein x=1/5~4/5, y=1/5~4/5, gram volume >=150mAh/g of active material first, conductive agent is conductive carbon, carbon is received
Any one or a few mixture in mitron, graphene and VGCF；Binding agent is PVDF.
Applied to each above-mentioned technical proposal, in the preparation method, active material second is graphite, active material second
Gram volume >=330mAh/g；Conductive agent is any one or a few the mixing in conductive carbon, carbon nanotube, graphene and VGCF
Object；Thickener is sodium carboxymethylcellulose；Binding agent butadiene-styrene latex.
The technical solution of battery pack is as follows：Applied to each above-mentioned technical proposal, a kind of production method of battery pack：S1：
Battery pack is calculated for the effective volume that utilizes：S2：Volumeter according to needed for effective volume and battery pack calculates battery
The positive and negative pole material system that monolithic design should use；S3：After determining material system, thin light big energy shell is fully taken into account
Internal structure and size obtain the designing scheme for the single battery that may be used；S4：The preparation of single battery, including:
S41：The anode of single battery is prepared using plus plate current-collecting body and active material first layer preparation：Wherein, active material first layer by with
The raw material composition of lower mass percent：Active material first：95.0%-99.0%, conductive agent：0.5%-3.0%, binding agent：0.5%-
2.0%, wherein, the surface density of active material first layer is 15-27mg/cm2, and thickness is 109-177 μm；First by active material first, lead
Electric agent, binding agent and solvent are mixed to form active material layer first layer slurry, are then coated with active material layer first layer slurry
On the surface of plus plate current-collecting body, active material layer first layer, drying are formed, then be compacted pole piece with roll squeezer, anode sheet are made,
Then sheet-punching machine or film is used to cut machine and the sheet is made prescribed level and carries the anode pole piece of aluminum foil current collector；S42：It adopts
The cathode of single battery is prepared with negative current collector and active material second layer：Wherein, active material second layer is by following quality percentage
The raw material composition of ratio：Active material second：95.0%-99.0%, conductive agent：0.5%-2.0%, thickener：0-1.0%, binding agent：
0.5-3.0%, wherein, the surface density 7-15mg/cm2 of active material second layer, 115-188 μm of thickness；First by active material second, lead
Electric agent, thickener, binding agent and solvent are mixed to form active material layer second layer slurry, then starch active material layer second layer
Material is coated on the surface of negative current collector, forms active material layer second layer, drying, then be compacted pole piece with roll squeezer, is made negative
Then very big piece cuts machine by large stretch of cathode pole piece that prescribed level is made and carries copper foil current collector using sheet-punching machine or film；
S43：The preparation of high power capacity single battery：According to shown in Fig. 1 sequentially include 1.:Positive plate (3)-diaphragm (4)-negative plate (6)-
Insulating film (5)-... positive plate (3)-diaphragm (4)-negative plate (6)-insulating film (5) and single battery flexible packaging film (8)；Its
In, diaphragm (4) is interval in successively between positive plate (3) and negative plate (6), and insulating film (5) is interval in negative plate (6) and just successively
Between pole piece (3)；②:It is first that first positive plate (3) and the last one negative plate (6) is reserved；③:Then it 2. walks, according to
Negative plate (6) and positive plate (3) are sequentially welded to ... negative plate (6) and anode shown in Fig. 1 with conductor adapting piece (9) is in parallel
Piece (3) is welded, and exist according to required monomer battery voltage value and existing material system with conductor adapting piece (9) is in parallel
Lower attainable monomer capability value of conventional method come calculate determine how many：Such negative plate (6) and positive plate (3)
Parallel connection welding；Non-welded part between conductor adapting piece (9) and all pole pieces is spaced with insulation board (7)；④:Anode is by pre-
The first positive pole aluminium foil collector and aluminium pole ears (1) stayed welds together, and cathode is by the last one reserved negative copper foil collection
Fluid and nickel lug (2) weld together；⑤:To be welded anode ear (1), negative electrode lug (2) and 3. middle parallel connection be welded it is more
Group negative plate (6) and positive plate (3) are assembled into the winding of the regulation number of plies according to total sequentially by the way of spooled laminations in 1.
More battery core monomers；⑥:And the more battery core monomers of winding assembled in 5. are packed with aluminum plastic film (8)；⑦:Filling electrolysis
Battery is melted into after matter and encapsulation, aging, the monomer-polymer lithium ion battery of required size is made；S5：According in S3
The designing scheme of high power capacity single battery that may be used carries out the assembling of battery pack.
Applied to each above-mentioned technical proposal, in the production method, the battery of high power capacity single battery may be used
Group designing scheme includes but not limited to following three kinds of designing schemes：Wherein, the first scheme is only with a kind of model and fits
The high power capacity single battery A of electric bicycle is closed, battery pack section is growth quadrangle during assembling, and side, front are into four sides
Shape；Second scheme is only with a kind of model and is suitble to the high power capacity single battery B of electric vehicle, and battery pack is cut during assembling
Face is into square, and side, front are growth quadrangles；The third scheme is big using a kind of big width of length and thickness
High power capacity single battery C that is thin and being suitble to power energy storage；It is arranged in order vertically and horizontally during assembling and connects into battery pack, battery
Group section, side are all that growth quadrangle, front are into the long quadrangle of wall shape.
Applied to each above-mentioned technical proposal, in the production method, active material first is LiNixCoyMn (1-x-y)
O2, wherein x=1/5~4/5, y=1/5~4/5, gram volume >=150mAh/g of active material first, conductive agent is conductive carbon, carbon is received
Any one or a few mixture in mitron, graphene and VGCF；Binding agent is PVDF.
Applied to each above-mentioned technical proposal, in the production method, active material second is graphite, active material second
Gram volume >=330mAh/g；Conductive agent is any one or a few the mixing in conductive carbon, carbon nanotube, graphene and VGCF
Object；Thickener is sodium carboxymethylcellulose；Binding agent butadiene-styrene latex.
Using the above scheme, beneficial effects of the present invention are：
First, single battery can realize high power capacity：High power capacity single battery is folded using plural parallel stage technique in single battery and winding
Blade technolgy is made, and according to required monomer battery voltage value and existing material system under conventional method institute's energy
The monomer capability value reached is determining to calculate；Such as 2.4 volts of the capacity of lithium titanate class single battery, but in list using the present invention
4.8 volts or more required high power capacity can be reached in body battery after plural parallel stage technique；Such as LiFePO4 class monomer electricity
The capacity in pond is 3.2 volts, but can reach 6.4 volts or more after plural parallel stage technique in single battery using the present invention
Required high power capacity；Such as three the capacity of metaclass single battery be 3.7 volts；For example the capacity of multiple aggregation species single battery is
4.3 volts, but 8.6 volts or more required height can be reached after plural parallel stage technique in single battery using the present invention
Capacity.
2nd, battery volume reduces：Because high power capacity single battery realizes monomer high power capacity, it is possible to reduce single battery
Between parallel connection, so including single battery and its battery pack can volume reduce 30%-50% with upper volume.
3rd, energy density increases：Because high power capacity single battery realizes monomer high power capacity, it is possible to increase single battery
Between series connection, so the energy density of more than 20%-50% can be increased including battery pack and its battery pack.Simultaneously using electricity
The excellent Soft Roll formula polymer Li-ion battery of chemical property.Battery appearance and size can be according to the shapes inside battery-pack exterior casing
Shape and size carry out optimized design, so as to preferably utilize the inner space of battery-pack exterior casing.Also improve the body of battery pack
Product energy density improves the course continuation mileage of electric vehicle.
4th, consistency increases：Battery volume reduces, single battery and its battery pack quantity are reduced, battery pack and its battery
Group packet can increase consistency, also be easier to realize wisdom management and easily putting maintenance into practice.
5th, internal resistance reduces：Stacked high power capacity single battery is used simultaneously, and lug is wider, so as to make the effective of electronics
Conductive cross-section product increase, the internal resistance of battery is just reduced than other modes battery, improve battery high-rate discharge ability and
Service efficiency.
6th, more superior cycle performance：Simultaneously under normal discharge conditions, the current distribution of lamination type electric tank discharge is more
Uniformly, the difference of inside battery polarization and inside battery each point is reduced, the cycle performance of battery is improved, so as to improve
The service life of battery pack.
7th, more preferably security performance：Simultaneously using current reduction of the laminated batteries by each pole piece, can mitigate big
Battery hair during current discharge
Thermal phenomenon and the safety accident that lug fusing is avoided to generate.
8th, preparation method of the invention is simple and practicable, and production efficiency is high, is conducive to popularity application.
Description of the drawings：
Fig. 1 is the full planing surface schematic diagram of single battery scheme of the present invention；
Fig. 2 is the single battery A using scheme shown in Fig. 1；
Fig. 3 is the single battery B using scheme shown in Fig. 1；
Fig. 4 is the single battery C using scheme shown in Fig. 1.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail：
The present embodiment is：The first pure electric vehicle bicycle use power battery pack, second of pure electric automobile power battery pack, the
Three kinds of distributed power generation energy storage station energy-storage battery groups；By calculating the volume inside board-like modular housing, remove protection board and
Volume shared by line related etc. obtains battery pack for the effective volume that utilizes.According to needed for effective volume and battery pack
Volumeter calculates battery cell and designs the positive and negative pole material system that should be used and its voltage value and capability value.
After determining material system and its voltage value, the internal structure and size of board-like shell are fully taken into account, can be adopted
Include but not limited to following three kinds of designing schemes with the designing scheme of high power capacity single battery：Wherein, the first scheme is only to adopt
With a kind of model and be suitble to the high power capacity single battery A of electric bicycle, battery pack section is growth quadrangle during assembling, side
Face, front are quadrangularlies；Second scheme is the high power capacity single battery only with a kind of model and suitable electric vehicle
B, battery pack section is into square during assembling, and side, front are growth quadrangles；The third scheme is using a kind of length
Spend that big width is big and thickness is thin and is suitble to the high power capacity single battery C of power energy storage；It is arranged in order vertically and horizontally during assembling
Connect into battery pack, battery pack section, side are all that growth quadrangle, front are into the long quadrangle of wall shape.
High power capacity single battery is made using multigroup battery core parallel connection technology in single battery and spooled laminations technique：
It is included according to sequence shown in Fig. 1 1.:Positive plate (3)-diaphragm (4)-negative plate (6)-insulating film (5)-... positive plate (3)-
Diaphragm (4)-negative plate (6)-insulating film (5) and single battery flexible packaging film (8)；Wherein, diaphragm (4) is interval in positive plate successively
(3) between negative plate (6), insulating film (5) is interval in successively between negative plate (6) and positive plate (3)；②:First by first
A positive plate (3) and the last one negative plate (6) are reserved；③:Then it the 2. walks, according to sequence shown in Fig. 1 by negative plate (6) and just
Pole piece (3) is welded with conductor adapting piece (9) is in parallel ... negative plate (6) and positive plate (3) conductor adapting piece (9) weldering in parallel
It connects, and the attainable monomer of institute holds under conventional method according to required monomer battery voltage value and existing material system
Magnitude come calculate determine how many：Such negative plate (6) and the welding in parallel of positive plate (3)；In conductor adapting piece (9) and
Non-welded part between all pole pieces is spaced with insulation board (7)；④:Anode by first reserved positive pole aluminium foil collector and
Aluminium pole ears (1) weld together, and cathode is welded together by reserved the last one negative copper foil collector and nickel lug (2)；
⑤:To be welded anode ear (1), negative electrode lug (2) and multigroup negative plate (6) that 3. middle parallel connection is welded and positive plate (3) according to
1. total sequence in is assembled into the more battery core monomers of winding of the regulation number of plies by the way of spooled laminations；⑥:It and will 5. middle institute
The more battery core monomers of winding of assembling are packed with aluminum plastic film (8)；Aluminum plastic film (or shell) is wrapped in outermost；The anode includes
Plus plate current-collecting body and active material first layer.The cathode includes negative current collector and active material second layer.The wherein described work
Property substance first layer is made of the raw material of following mass percent：Active material first：95%-99%, conductive agent 0.5%-3.0% glue
Agent 0.5%-2% is tied, the surface density of active material first layer is 15-27mg/cm2, and thickness is 109-177 μm.Wherein, the work
Property substance first can be LiNixCoyMn (1-x-y) O2, wherein x=1/5~4/5, y=1/5~4/5, the gram volume of active material first
>=150mAh/g, conductive agent are any one or a few the mixture in conductive carbon, carbon nanotube, graphene and VGCF；It is viscous
Knot agent is PVDF.
The active material second layer is made of the raw material of following mass percent：Active material second：95.0%-99.0%,
Conductive agent：0.5%-2.0%, thickener：0-1.0%, binding agent：0.5-3.0%, the surface density 7-15mg/ of active material second layer
Cm2,115-188 μm of thickness.Wherein, the active material second be graphite, gram volume >=330mAh/g of active material second；It leads
Electric agent is any one or a few the mixture in conductive carbon, carbon nanotube, graphene and VGCF；Thickener is fine for carboxymethyl
The plain sodium of dimension；Binding agent butadiene-styrene latex.Wherein, the preparation method of the anode is：First by active material first, conductive agent, PVDF and
Solvent is mixed to form active material layer first layer slurry, and active material layer first layer slurry then is coated on plus plate current-collecting body
Surface forms active material layer first layer, drying, then is compacted pole piece with roll squeezer, anode sheet is made, then using sheet-punching machine
Or film cuts machine and the sheet is made prescribed level and carries the anode pole piece of aluminum foil current collector.Wherein, the preparation of the cathode
Method is：First active material second, conductive agent, thickener, binding agent and solvent are mixed to form active material layer second layer slurry
Then active material layer second layer slurry is coated on the surface of negative current collector by material, form active material layer second layer, is dried, then
Pole piece is compacted with roll squeezer, cathode sheet is made, machine is then cut using sheet-punching machine or film, prescribed level is made in the sheet
And the cathode pole piece with copper foil current collector.
The preparation method of the high power capacity single battery is：According to shown in Fig. 1 sequentially include 1.:Positive plate (3)-diaphragm
(4)-negative plate (6)-insulating film (5)-... positive plate (3)-diaphragm (4)-negative plate (6)-insulating film (5) and single battery
Flexible packaging film (8)；Wherein, diaphragm (4) is interval in successively between positive plate (3) and negative plate (6), and insulating film (5) is spaced successively
Between negative plate (6) and positive plate (3)；②:It is first that first positive plate (3) and the last one negative plate (6) is reserved；
③:Then it the 2. walks, according to sequence shown in Fig. 1 by negative plate (6) and positive plate (3) conductor adapting piece (9) welding ... in parallel
Negative plate (6) and positive plate (3) are welded with conductor adapting piece (9) is in parallel, and according to required cell capacity value and existing
Material system under conventional method the attainable monomer capability value of institute come calculate determine how many：Such negative plate
(6) it is welded with the in parallel of positive plate (3)；Non-welded part between conductor adapting piece (9) and all pole pieces is with insulation board (7)
Interval；④:Anode is welded together by reserved first positive pole aluminium foil collector and aluminium pole ears (1), and cathode is by reserving most
The latter negative copper foil collector and nickel lug (2) weld together；⑤:Anode ear (1), negative electrode lug (2) and 3. will be welded
The multigroup negative plate (6) and positive plate (3) that middle parallel connection is welded using spooled laminations by the way of, are filled according to total sequence in 1.
It is made into the more battery core monomers of winding of the regulation number of plies；⑥:And by the more battery core monomer aluminum plastic films (8) of winding assembled in 5. into
Row packaging；⑦:Filling electrolyte and encapsulate after battery is melted into, aging, be made needed for size monomer-polymer lithium from
Sub- battery.
Embodiment 1
The preparation method of the battery pack of the present embodiment, it includes following preparation process：
The preparation of anode：Using NMP as solvent, by 95.5% nickle cobalt lithium manganate (LiNixCoyMn (1-x-y) O2, wherein x=1/5
~4/5, y=1/5~4/5), 1.6% conductive carbon, the segregation vinyl fluoride of 1.0% BP-2000 and 2% be mixed to form activity
Substance first layer slurry, the solid content of active material first layer slurry is 65%, then will be living using 16 μm of aluminium foils as plus plate current-collecting body
Property substance first layer slurry be coated on the surfaces of 16 μm of aluminium foils, form active material first layer, drying, then be compacted pole piece with roll squeezer
It is large stretch of that anode is made, then using sheet-punching machine or film cut machine by the sheet be made prescribed level and with aluminum foil current collector just
Pole pole piece.The preparation of cathode：Cathode uses Delanium as negative electrode active material, using deionized water as negative electrode slurry
Solvent, by 95.1% negative electrode active material, 1.2% conductive carbon, 1.5% sodium carboxymethylcellulose and 2.2% butadiene-styrene latex
Mixing forms active material second layer slurry, and the solid content of active material second layer slurry is 49%, using 10 μm of copper foils as anode
Then active material second layer slurry is coated on the surface of 10 μm of copper foils by collector, form active material second layer, drying, then use
Pole piece is compacted that cathode sheet is made by roll squeezer, then cuts machine using sheet-punching machine or film and the sheet is made prescribed level and band
There is the cathode pole piece of copper foil current collector.The preparation of high power capacity single battery：The preparation method of the high power capacity single battery is：According to
Sequence is included 1. shown in Fig. 1:Positive plate (3)-diaphragm (4)-negative plate (6)-insulating film (5)-... positive plate (3)-diaphragm
(4)-negative plate (6)-insulating film (5) and single battery flexible packaging film (8)；Wherein, diaphragm (4) is interval in positive plate (3) successively
Between negative plate (6), insulating film (5) is interval in successively between negative plate (6) and positive plate (3)；②:First by first just
Pole piece (3) and the last one negative plate (6) are reserved；③:Then it the 2. walks, according to sequence shown in Fig. 1 by negative plate (6) and positive plate
(3) negative plate (6) and positive plate (3) conductor adapting piece (9) welding in parallel are welded ... with conductor adapting piece (9) is in parallel,
And according to required monomer battery voltage value and existing material system under conventional method the attainable monomer capacity of institute
Value come calculate determine how many：Such negative plate (6) and the welding in parallel of positive plate (3)；In conductor adapting piece (9) and
Non-welded part between all pole pieces is spaced with insulation board (7)；④:Anode by first reserved positive pole aluminium foil collector and
Aluminium pole ears (1) weld together, and cathode is welded together by reserved the last one negative copper foil collector and nickel lug (2)；
⑤:To be welded anode ear (1), negative electrode lug (2) and multigroup negative plate (6) that 3. middle parallel connection is welded and positive plate (3) according to
1. total sequence in is assembled into the more battery core monomers of winding of the regulation number of plies by the way of spooled laminations；⑥:It and will 5. middle institute
The more battery core monomers of winding of assembling are packed with aluminum plastic film (8)；⑦:Add or inject nonaqueous electrolytic solution, electrolyte 1mol/L
LiPF4 solution, battery is melted into after encapsulation, aging, according to required size, A monomer-polymer lithium-ion electrics is made
Pond.
The grouping of battery：Stepping is carried out according to the capacity of single battery, internal resistance, voltage and K values；Every grade of capacity 100mAh,
Every grade of internal resistance 1m Ω, every grade of voltage 5mV, every grade of K values 0.02mV/h；Capacity, internal resistance, voltage and K values are respectively positioned on the list of identical shelves
Body can just be attributed to a total shelves.The assembling of battery pack：The thickness of monomer A is 5.0-65mm, preferably 15.0mm or hereinafter, monomer A
Width 50-300mm, preferably 100mm；The length 100-500mm of monomer A, preferably 200mm；Every piece of battery pack is all by above-mentioned ruler
Very little 4 pieces of single battery A for being located at identical total grade assemble according to series system.
Embodiment 2
The preparation method of the battery pack of the present embodiment, it includes following preparation process：
a）The preparation of anode：Using NMP as solvent, by 95.5% nickle cobalt lithium manganate (LiNixCoyMn (1-x-y) O2, wherein x=1/
5~4/5, y=1/5~4/5), 1.6% conductive carbon, the segregation vinyl fluoride of 1.0% BP-2000 and 2% be mixed to form activity
Substance first layer slurry, the solid content of active material first layer slurry is 65%, then will be living using 16 μm of aluminium foils as plus plate current-collecting body
Property substance first layer slurry be coated on the surfaces of 16 μm of aluminium foils, form active material first layer, drying, then be compacted pole piece with roll squeezer
It is large stretch of that anode is made, then using sheet-punching machine or film cut machine by the sheet be made prescribed level and with aluminum foil current collector just
Pole pole piece.
b）The preparation of cathode：Cathode uses Delanium to be starched as negative electrode active material using deionized water as cathode
The solvent of material, by 95.1% negative electrode active material, 1.2% conductive carbon, 1.5% sodium carboxymethylcellulose and 2.2% butylbenzene
Latex is mixed to form active material second layer slurry, and the solid content of active material second layer slurry is 49%, using 10 μm of copper foils as
Then active material second layer slurry is coated on the surface of 10 μm of copper foils by plus plate current-collecting body, form active material second layer, is dried,
Pole piece is compacted with roll squeezer again cathode sheet is made, machine is then cut using sheet-punching machine or film, prescribed level is made in the sheet
And the cathode pole piece with copper foil current collector.
c）The preparation of high power capacity single battery：The preparation method of the high power capacity single battery is：According to sequentially being wrapped shown in Fig. 1
It includes 1.:Positive plate (3)-diaphragm (4)-negative plate (6)-insulating film (5)-... positive plate (3)-diaphragm (4)-negative plate
(6)-insulating film (5) and single battery flexible packaging film (8)；Wherein, diaphragm (4) is interval in positive plate (3) and negative plate (6) successively
Between, insulating film (5) is interval in successively between negative plate (6) and positive plate (3)；②:First by first positive plate (3) and most
The latter negative plate (6) is reserved；③:Then it the 2. walks, connects negative plate (6) and positive plate (3) with conductor according to sequence shown in Fig. 1
Fitting (9) welding ... negative plate (6) in parallel and positive plate (3) are welded, and with conductor adapting piece (9) is in parallel according to required
Monomer battery voltage value and existing material system attainable monomer capability value of institute under conventional method are determining to calculate
How many is a：Such negative plate (6) and the welding in parallel of positive plate (3)；Between conductor adapting piece (9) and all pole pieces
Non-welded part is spaced with insulation board (7)；④:Anode is welded by reserved first positive pole aluminium foil collector and aluminium pole ears (1)
Together, cathode is welded together by reserved the last one negative copper foil collector and nickel lug (2)；⑤:It will be welded just
Lug (1), negative electrode lug (2) and multigroup negative plate (6) and positive plate that 3. middle parallel connection is welded are (according to the appearance of required single battery
B monomer polymer Li-ion battery is made in amount and size.
d）The grouping of battery：Stepping is carried out according to the capacity of single battery, internal resistance, voltage and K values, capacity 150mAh is every
Shelves, every grade of internal resistance 1m Ω, every grade of voltage 5mV, every grade of K values 0.02mV/h, capacity, internal resistance, voltage and K values are respectively positioned on identical shelves
Monomer can just be attributed to a total shelves.
e）The assembling of battery pack：The thickness of monomer B is 6.0-99mm, preferably 12.0mm or hereinafter, the width of monomer B
100-1500mm, preferably 200mm；The length 600-3300mm of monomer B, preferably 1800mm；Every piece of battery pack is all by above-mentioned size
Assemble positioned at identical total grade of 100 pieces of single battery B according to series system.
Embodiment 3
The preparation method of the battery pack of the present embodiment, it includes following preparation process：
a）The preparation of anode：Using NMP as solvent, by 95.5% nickle cobalt lithium manganate (LiNixCoyMn (1-x-y) O2, wherein x=1/
5~4/5, y=1/5~4/5), 1.6% conductive carbon, the segregation vinyl fluoride of 1.0% BP-2000 and 2% be mixed to form activity
Substance first layer slurry, the solid content of active material first layer slurry is 65%, then will be living using 16 μm of aluminium foils as plus plate current-collecting body
Property substance first layer slurry be coated on the surfaces of 16 μm of aluminium foils, form active material first layer, drying, then be compacted pole piece with roll squeezer
It is large stretch of that anode is made, then using sheet-punching machine or film cut machine by the sheet be made prescribed level and with aluminum foil current collector just
Pole pole piece.
b）The preparation of cathode：Cathode uses Delanium to be starched as negative electrode active material using deionized water as cathode
The solvent of material, by 95.1% negative electrode active material, 1.2% conductive carbon, 1.5% sodium carboxymethylcellulose and 2.2% butylbenzene
Latex is mixed to form active material second layer slurry, and the solid content of active material second layer slurry is 49%, using 10 μm of copper foils as
Then active material second layer slurry is coated on the surface of 10 μm of copper foils by plus plate current-collecting body, form active material second layer, is dried,
Pole piece is compacted with roll squeezer again cathode sheet is made, machine is then cut using sheet-punching machine or film, prescribed level is made in the sheet
And the cathode pole piece with copper foil current collector.
c）The preparation of high power capacity single battery：The preparation method of the single battery is：According to shown in Fig. 1 sequentially include 1.
Positive plate (3)-diaphragm (4)-negative plate (6)-insulating film (5)-... positive plate (3)-diaphragm (4)-negative plate (6)-insulating film
(5) and single battery flexible packaging film (8)；Wherein, diaphragm (4) is interval in successively between positive plate (3) and negative plate (6), insulation
Film (5) is interval in successively between negative plate (6) and positive plate (3)；②:First by first positive plate (3) and the last one is negative
Pole piece (6) is reserved；③:Then it the 2. walks, according to sequence shown in Fig. 1 by negative plate (6) and positive plate (3) with conductor adapting piece (9)
Parallel connection welding ... negative plate (6) and positive plate (3) are welded, and with conductor adapting piece (9) is in parallel according to required single battery
Voltage value and existing material system under conventional method the attainable monomer capability value of institute come calculate determine how many：
Such negative plate (6) and the welding in parallel of positive plate (3)；Non-solder portion between conductor adapting piece (9) and all pole pieces
Position is spaced with insulation board (7)；④:Anode is welded together by reserved first positive pole aluminium foil collector and aluminium pole ears (1), is born
Pole is welded together by reserved the last one negative copper foil collector and nickel lug (2)；⑤:Anode ear (1) will be welded, bear
The multigroup negative plate (6) and positive plate (3) that lug (2) and 3. middle parallel connection are welded use spooled laminations according to total sequence in 1.
Mode, be assembled into the more battery core monomers of winding of the regulation number of plies；⑥:And the more battery core monomer aluminium of winding that will be assembled in 5.
Plastic film (8) is packed；⑦:Add or inject nonaqueous electrolytic solution, electrolyte is the LiPF4 solution of 1mol/L, to battery after encapsulation
It is melted into, aging, C monomer polymer Li-ion battery is made according to the capacity and size of required single battery.
d）The grouping of battery：Stepping is carried out according to the capacity of single battery, internal resistance, voltage and K values, capacity 190mAh is every
Shelves, every grade of internal resistance 1m Ω, every grade of voltage 5mV, every grade of K values 0.02mV/h, capacity, internal resistance, voltage and K values are respectively positioned on identical shelves
Monomer can just be attributed to a total shelves.
e）The assembling of battery pack：The thickness of monomer C is 30.0-399mm, preferably 75.0mm or hereinafter, the width of monomer C
200-12000mm, preferably 1500mm；The length 600-36000mm of monomer C, preferably 3600mm；Each battery pack is all by above-mentioned ruler
Very little 9 pieces of single battery C for being located at identical total grade assemble according to series system.
It these are only the implementation example of the present invention, be not intended to restrict the invention, all spirit and original in the present invention
All any modification, equivalent and improvement made within then etc., are included within protection scope of the present invention：1. hair
It is bright to use existing material including but not limited to single battery, it also includes using the material newly created afterwards；2. present invention packet
Contain but be not limited to the battery core in single battery and put in order from left to right, from right to left or from top to bottom, from top to bottom；3.
The present invention uses winding, winding, lap wound method including but not limited to the battery core in single battery；4. the present invention includes but unlimited
In using flexible package and its material, rigid package and its material；5. the present invention is including but not limited to being used in power battery, energy storage
Battery, mobile battery, consumer electronics, household electrical appliances office equipment, production equipment field.
Claims (10)
1. a kind of single battery realizes the method for high power capacity it is characterized in that using battery core parallel connection technology multigroup in single battery
It is made with spooled laminations technique, includes according to sequence figure one Suo Shi 1., positive plate (3)-diaphragm (4)-negative plate (6)-exhausted
Velum (5)-... positive plate (3)-diaphragm (4)-negative plate (6)-insulating film (5) and single battery flexible packaging film (8)；Wherein,
Diaphragm (4) is interval in successively between positive plate (3) and negative plate (6), and insulating film (5) is interval in negative plate (6) and anode successively
Between piece (3)；It is 2. first that first positive plate (3) and the last one negative plate (6) is reserved；3. it then 2. walks, according to figure
Negative plate (6) and positive plate (3) are sequentially welded to ... negative plate (6) and positive plate shown in one with conductor adapting piece (9) is in parallel
(3) it is welded, and passed according to required monomer battery voltage value and existing material system with conductor adapting piece (9) is in parallel
Lower attainable cell voltage value of system method come calculate determine how many：Such negative plate (6) and positive plate (3) and
Connection welding；Non-welded part between conductor adapting piece (9) and all pole pieces is spaced with insulation board (7)；4. anode is by reserving
First positive pole aluminium foil collector and aluminium pole ears (1) weld together, cathode is by the last one reserved negative copper foil afflux
Body and nickel lug (2) weld together；5. will be welded anode ear (1), negative electrode lug (2) and 3. middle parallel connection be welded it is multigroup
According to total sequence in 1. by the way of spooled laminations, the winding for being assembled into the regulation number of plies is more for negative plate (6) and positive plate (3)
Battery core monomer；6. and the more battery core monomers of winding assembled in 5. are packed with aluminum plastic film (8)；7. fill electrolyte
And battery is melted into after encapsulating, aging, the single battery of required size is made；Anode includes plus plate current-collecting body and active matter
Matter first layer, active material first layer are made of the raw material of following mass percent：Active material first：95.0%-99.0%, conductive agent
0.5%-3.0%, binding agent 0.5%-2.0%, wherein, the surface density of active material first layer is 15-27mg/cm2, thickness 109-
177μm；Cathode include negative current collector and active material second layer, active material second layer by following mass percent raw material group
Into：Active material second：95.0%-99.0%, conductive agent：0.5%-2.0%, thickener：0-1.0%, binding agent：0.5-3.0%,
In, the surface density 7-15mg/cm2 of active material second layer, 115-188 μm of thickness；Active material first is LiNixCoyMn (1-x-y)
O2, wherein x=1/5~4/5, y=1/5~4/5, gram volume >=150mAh/g of active material first, conductive agent is conductive carbon, carbon is received
Any one or a few mixture in mitron, graphene and VGCF；Binding agent is PVDF；Active material second is graphite, living
Gram volume >=330mAh/g of property substance second；Conductive agent be conductive carbon, carbon nanotube, graphene and VGCF in any one or
Several mixtures；Thickener is sodium carboxymethylcellulose；Binding agent butadiene-styrene latex.
2. high power capacity single battery according to claim 1, it is characterised in that：Have in single battery multiple by positive plate
(3) the single battery core of-diaphragm (4)-negative plate (6) composition；There is insulating film (5) being spaced between its battery core and battery core.
3. high power capacity single battery according to claim 1 or 2, it is characterised in that：It is to be connected in parallel between multiple battery cores
's.
4. the high power capacity single battery according to claims 1 or 2 or 3, it is characterised in that：It is connected in parallel part and multiple battery cores
Between the position that should not be connected there is insulation board (7) to insulate, and play sealing function.
5. the high power capacity single battery according to claims 1 or 2 or 3 or 4, it is characterised in that：This multicore single battery energy
The capacity of acquisition is above one times and more times of single single battery；Electrolysis is filled in the high power capacity single battery of this multicore
Matter.
6. a kind of preparation method for the high power capacity single battery for being used to make battery pack, it is characterised in that：
S1：The anode of high power capacity single battery is prepared using plus plate current-collecting body and active material first layer：Wherein, active material first layer
It is made of the raw material of following mass percent：Active material first：95.0%-99.0%, conductive agent 0.5%-3.0%, binding agent 0.5%-
2.0%, wherein, the surface density of active material first layer is 15-27mg/cm2, and thickness is 109-177 μm；First by active material first, lead
Electric agent, binding agent and solvent are mixed to form activity substance first layer slurry, are then coated with activity substance first layer slurry
On the surface of plus plate current-collecting body, activity substance first layer is formed, is dried, then be compacted pole piece with roll squeezer, anode sheet is made,
Then sheet-punching machine or film is used to cut machine and the sheet is made prescribed level and carries the anode pole piece of aluminum foil current collector；S2：It adopts
The cathode of high power capacity single battery is prepared with negative current collector and active material second layer：Wherein, active material second layer is by following matter
Measure the raw material composition of percentage：Active material second：95.0%-99.0%, conductive agent：0.5%-2.0%, thickener：0-1.0% is bonded
Agent：0.5-3.0%, wherein, the surface density 7-15mg/cm2 of active material second layer, 115-188 μm of thickness；First by active material second,
Conductive agent, thickener, binding agent and solvent are mixed to form active material layer second layer slurry, then by active material layer second layer
Slurry is coated on the surface of negative current collector, forms active material layer second layer, drying, then be compacted pole piece with roll squeezer, is made
Cathode is large stretch of, then cuts machine by large stretch of cathode pole piece that prescribed level is made and carries copper foil current collector using sheet-punching machine or film；
S3：The preparation of high power capacity single battery：Include according to sequence figure one Suo Shi 1.:Positive plate (3)-diaphragm (4)-negative plate (6)-absolutely
Velum (5)-... positive plate (3)-diaphragm (4)-negative plate (6)-insulating film (5) and single battery flexible packaging film (8)；Wherein,
Diaphragm (4) is interval in successively between positive plate (3) and negative plate (6), and insulating film (5) is interval in negative plate (6) and anode successively
Between piece (3)；②:It is first that first positive plate (3) and the last one negative plate (6) is reserved；③:Then it 2. walks, according to figure
Negative plate (6) and positive plate (3) are sequentially welded to ... negative plate (6) and positive plate shown in one with conductor adapting piece (9) is in parallel
(3) it is welded, and passed according to required monomer battery voltage value and existing material system with conductor adapting piece (9) is in parallel
Lower attainable cell voltage value of system method come calculate determine how many：Such negative plate (6) and positive plate (3) and
Connection welding；Non-welded part between conductor adapting piece (9) and all pole pieces is spaced with insulation board (7)；④:Anode is by reserving
First positive pole aluminium foil collector and aluminium pole ears (1) weld together, cathode is by the last one reserved negative copper foil afflux
Body and nickel lug (2) weld together；⑤:To be welded anode ear (1), negative electrode lug (2) and 3. middle parallel connection be welded it is multigroup
According to total sequence in 1. by the way of spooled laminations, the winding for being assembled into the regulation number of plies is more for negative plate (6) and positive plate (3)
Battery core monomer；⑥:And the more battery core monomers of winding assembled in 5. are packed with aluminum plastic film (8)；⑦:Fill electrolyte
And battery is melted into after encapsulating, aging, the single battery of required size is made.
7. preparation method according to claim 6, it is characterised in that：Active material first is LiNixCoyMn (1-x-y) O2,
Wherein x=1/5~4/5, y=1/5~4/5, gram volume >=150mAh/g of active material first, conductive agent is conductive carbon, carbon nanometer
Any one or a few mixture in pipe, graphene and VGCF；Binding agent is PVDF；Active material second is graphite, active
Gram volume >=330mAh/g of substance second；Conductive agent be conductive carbon, carbon nanotube, graphene and VGCF in any one or it is several
The mixture of kind；Thickener is sodium carboxymethylcellulose；Binding agent butadiene-styrene latex.
8. a kind of production method of battery pack, it is characterised in that：S1：Battery pack is calculated for the effective volume that utilizes：S2：
Volumeter according to needed for effective volume and battery pack calculates the positive and negative pole material system that battery cell design should use；S3：
After determining material system, the internal structure and size of board-like shell are fully taken into account, obtains the high power capacity monomer electricity that may be used
The designing scheme in pond；S4：The preparation of high power capacity single battery, including:S41：Using plus plate current-collecting body and active material first layer
Prepare the anode of high power capacity single battery：Wherein, active material first layer is made of the raw material of following mass percent：Active material
First：95.0%-99.0%, conductive agent 0.5%-3.0%, binding agent 0.5%-2.0%, wherein, the surface density of active material first layer is 15-
27mg/cm2, thickness are 109-177 μm；First active material first, conductive agent, binding agent and solvent are mixed to be formed it is activity
Then activity substance first layer slurry is coated on the surface of plus plate current-collecting body, forms activity substance first by substance first layer slurry
Layer, drying, then be compacted pole piece with roll squeezer, anode sheet is made, machine is then cut using sheet-punching machine or film and makes the sheet
Into prescribed level and with aluminum foil current collector anode pole piece；S42：Gao Rong is prepared using negative current collector and active material second layer
Measure the cathode of single battery：Wherein, active material second layer is made of the raw material of following mass percent：Active material second：
95.0%-99.0%, conductive agent：0.5%-2.0%, thickener：0-1.0%, binding agent：0.5-3.0%, wherein, active material second layer
Surface density 7-15mg/cm2,115-188 μm of thickness；First active material second, conductive agent, thickener, binding agent and solvent are mixed
It closes stirring and forms active material layer second layer slurry, then active material layer second layer slurry is coated on to the surface of negative current collector,
Active material layer second layer, drying are formed, then is compacted pole piece with roll squeezer, cathode sheet is made, then using sheet-punching machine or film
Machine is cut sheet is made prescribed level and carries the cathode pole piece of copper foil current collector；S43：The preparation of high power capacity single battery：According to
Sequence is included 1. shown in figure one:Positive plate (3)-diaphragm (4)-negative plate (6)-insulating film (5)-... positive plate (3)-every
Film (4)-negative plate (6)-insulating film (5) and single battery flexible packaging film (8)；Wherein, diaphragm (4) is interval in positive plate successively
(3) between negative plate (6), insulating film (5) is interval in successively between negative plate (6) and positive plate (3)；②:First by first
A positive plate (3) and the last one negative plate (6) are reserved；③:Then the 2. walk, according to sequence figure one Suo Shi by negative plate (6) and
Positive plate (3) is welded with conductor adapting piece (9) is in parallel ..., and negative plate (6) and positive plate (3) conductor adapting piece (9) are in parallel
Welding, and according to required monomer battery voltage value and existing material system under conventional method the attainable monomer of institute
Voltage value come calculate determine how many：Such negative plate (6) and the welding in parallel of positive plate (3)；In conductor adapting piece (9)
Non-welded part between all pole pieces is spaced with insulation board (7)；④:Anode is by first reserved positive pole aluminium foil collector
Weld together with aluminium pole ears (1), cathode is welded on one by reserved the last one negative copper foil collector and nickel lug (2)
It rises；⑤:Anode ear (1), negative electrode lug (2) and multigroup negative plate (6) and positive plate (3) that 3. middle parallel connection is welded will be welded to press
By the way of spooled laminations, the more battery core monomers of winding of the regulation number of plies are assembled into according to the always sequence in 1.；⑥:And will 5. in
The more battery core monomers of winding assembled are packed with aluminum plastic film (8)；⑦:To battery after filling electrolyte and encapsulating
Into, aging, be made needed for size single battery；S5：According to the designing scheme of high power capacity single battery that may be used in S3
To carry out the assembling of battery pack.
9. production method according to claim 8, it is characterised in that：The design side of high power capacity single battery that may be used
Case includes but not limited to following three kinds of designing schemes：Wherein, the first scheme be only with a kind of model and be suitble to it is electronic from
The high power capacity single battery (A) of driving, battery pack section is growth quadrangle during assembling, and side, front are quadrangularlies；Second
Kind of scheme is only with a kind of model and is suitble to the high power capacity single battery (B) of electric vehicle, and battery pack section is during assembling
Into square, side, front are growth quadrangles；The third scheme is big using a kind of big width of length and thickness is thin
And it is suitble to the high power capacity single battery (C) of power energy storage；It is arranged in order vertically and horizontally during assembling and connects into battery pack, battery pack
Section, side are all that growth quadrangle, front are into the long quadrangle of wall shape.
10. production method according to claim 8, it is characterised in that：Active material first is LiNixCoyMn (1-x-y)
O2, wherein x=1/5~4/5, y=1/5~4/5, gram volume >=150mAh/g of active material first, conductive agent is conductive carbon, carbon is received
Any one or a few mixture in mitron, graphene and VGCF, binding agent PVDF；Active material second is graphite, living
Gram volume >=330mAh/g of property substance second；Conductive agent be conductive carbon, carbon nanotube, graphene and VGCF in any one or
Several mixtures, thickener are sodium carboxymethylcellulose, binding agent butadiene-styrene latex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037083.XA CN108199079A (en) | 2018-01-15 | 2018-01-15 | Single battery is realized high capacity process and is prepared and plate-type battery group preparation method |
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| CN114597349A (en) * | 2022-01-24 | 2022-06-07 | 东莞维科电池有限公司 | Lithium ion battery and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114597349A (en) * | 2022-01-24 | 2022-06-07 | 东莞维科电池有限公司 | Lithium ion battery and preparation method thereof |
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