CN107978800A - Single battery is realized the method and preparation and its battery pack preparation method of high pressure - Google Patents
Single battery is realized the method and preparation and its battery pack preparation method of high pressure Download PDFInfo
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- CN107978800A CN107978800A CN201810037081.0A CN201810037081A CN107978800A CN 107978800 A CN107978800 A CN 107978800A CN 201810037081 A CN201810037081 A CN 201810037081A CN 107978800 A CN107978800 A CN 107978800A
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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
- H01M10/05—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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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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
Abstract
The invention discloses a kind of method and preparation and its battery pack preparation method for single battery being realized high pressure, high pressure single battery includes positive plate (3) membrane (4) negative plate (6) membrane (4) ... positive plate (3) membrane (4) negative plate (6) membrane (4) and single battery flexible packaging film (8)；Wherein, membrane (4) is interval between positive plate (3) and negative plate (6) successively, and membrane (4) is interval between negative plate (6) and positive plate (3) successively；Aluminum plastic film (shell) is wrapped in outermost；Cathode 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%；Anode 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%.Monomer battery voltage 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, is specifically that one kind can realize high-tension single battery and its preparation side
The manufacture method of method and its battery pack.
Background technology
First commercial lithium battery was released since 1991, its application becomes the electronic equipment core technology of 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 the pure electric automobile of high growth, electric bicycle, the energy storage of distributed power generation station, smart mobile phone.
The technology being disclosed at present is：Single battery is all single, i.e., be in single battery by positive plate-membrane-
One single of negative plate this three pieces composition is molding, and anode ear is drawn to outside single battery from positive plate, from negative plate to list
Negative electrode lug is drawn outside body battery；Therefore the voltage of lithium titanate class single battery is 2.4 volts；The voltage of LiFePO4 class single battery
It is 3.2 volts；The voltage of three metaclass single batteries is 3.7 volts；The voltage of multiple aggregation species single battery is 4.3 volts.So
When needing high voltage, just substantial amounts of single battery is connected；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.
The content of the invention
The technical problems to be solved by the invention are：Overcome the shortcomings of background technology, there is provided it is a kind of simple and reasonable,
Single battery realizes the method and preparation and its battery pack preparation method of high pressure.
The method for single battery being realized high pressure of the present invention and preparation and its battery pack preparation method are mainly employed using single
The design of multiple battery core tandem process and winding process in body battery, so as to increase the voltage of single battery significantly, also at the same time
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 tandem process and spooled laminations technique are made：According to shown in Fig. 1 sequentially include 1.:Positive plate (3)-membrane (4)-
Negative plate (6)-membrane (4)-... positive plate (3)-membrane (4)-negative plate (6)-membrane (4) and single battery flexible packaging film
(8)；Wherein, membrane (4) is interval between positive plate (3) and negative plate (6) successively, and membrane (4) is interval in negative plate (6) successively
Between positive plate (3)；②:It is first that first positive plate (3) and last negative plate (6) is reserved；③:Then 2.
Step, according to order shown in Fig. 1 by negative plate (6) and positive plate (3) use conductor adapting piece (9) Series connection welding ... negative plate (6) and
Positive plate (3) conductor adapting piece (9) Series connection welding, and according to required monomer battery voltage value and existing material bodies
Tie up to lower attainable cell voltage value of conventional method calculate determine how many：Such negative plate (6) and positive plate
(3) Series connection welding；Non-welded part between conductor adapting piece (9) and all pole pieces is spaced with insulation board (7)；④:Just
Pole is welded together by reserved first positive pole aluminium foil collector and aluminium pole ears (1), and anode is by last reserved anode
Copper foil current collector and nickel lug (2) weld together；⑤:Anode ear (1), negative electrode lug (2) and 3. middle Series connection welding will be welded
Good multigroup negative plate (6) and positive plate (3) are assembled into the regulation number of plies according to total sequentially by the way of spooled laminations in 1.
The more battery core monomers of winding；⑥:And the more battery core monomers of winding assembled in 5. are packed with aluminum plastic film (8)；⑦:Add
Battery is melted into after note electrolyte and encapsulation, aging, the single battery of required size is made.Cathode includes plus plate current-collecting body
With active material first layer, 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
For 109-177 μm.Anode includes negative current collector and active material second layer, active material second layer by following mass percent original
Material composition：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.
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 pressure single battery, active material second can be graphite, active matter
Gram volume >=330mAh/g of matter second；Conductive agent is any one or a few in conductive carbon, carbon nanotubes, graphene and VGCF
Mixture；Thickener is sodium carboxymethylcellulose；Binding agent butadiene-styrene latex.
Applied to each above-mentioned technical proposal, the preparation method of high pressure single battery, S1：Using plus plate current-collecting body and activity
Material first layer prepares the cathode of single battery：Wherein, active material first layer is made of the raw material of following mass percent：Active matter
Matter 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
For 15-27mg/cm2, thickness is 109-177 μm；First active material first, conductive agent, binding agent and solvent are mixed to be formed
Active material layer first layer slurry, is then coated on the surface of plus plate current-collecting body by active material layer first layer slurry, forms active matter
Matter layer first layer, drying, then be compacted pole piece with roll squeezer, cathode sheet is made, machine is then cut by described in using sheet-punching machine or film
Prescribed level and the anode pole piece with aluminum foil current collector is made in sheet；S2：Using negative current collector and active material second layer system
The anode of standby 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
Close stirring and form 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, anode 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 pressure single battery：According to Fig. 1
Shown order is included 1.:Positive plate (3)-membrane (4)-negative plate (6)-membrane (4)-... positive plate (3)-membrane (4)-
Negative plate (6)-membrane (4) and single battery flexible packaging film (8)；Wherein, membrane (4) is interval in positive plate (3) and anode successively
Between piece (6), membrane (4) is interval between negative plate (6) and positive plate (3) successively；②:First by first positive plate (3)
It is reserved with last negative plate (6)；③:Then the 2. walk, according to order shown in Fig. 1 by negative plate (6) and positive plate (3) with leading
Body connector (9) Series connection welding ... negative plate (6) and positive plate (3) conductor adapting piece (9) Series connection welding, and according to institute
The monomer battery voltage value needed and existing the material system attainable cell voltage value of institute under conventional method calculate
It is a how many is determined：Such negative plate (6) and the Series connection welding of positive plate (3)；In conductor adapting piece (9) and all pole pieces
Between non-welded part with insulation board (7) be spaced；④:Cathode is by reserved first positive pole aluminium foil collector and aluminium pole ears
(1) weld together, anode is welded together by reserved last negative copper foil collector and nickel lug (2)；⑤:Will weldering
Anode ear (1), negative electrode lug (2) and multigroup negative plate (6) that 3. middle series welding connects and positive plate (3) are connected according to total in 1.
Order is assembled into the more battery core monomers of winding of the regulation number of plies by the way of spooled laminations；⑥:And the volume that will be assembled in 5.
Packed around more battery core monomers with aluminum plastic film (8)；⑦:Battery is melted into after filling electrolyte and encapsulation, aging, is made
The monomer-polymer lithium ion battery of required size.
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 nanotubes, graphene and VGCF
Thing；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, draw the designing scheme for the single battery that can be used；S4：The preparation of single battery, it includes:
S41：The cathode 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 is compacted pole piece with roll squeezer, cathode 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；S42：Adopt
The anode 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 is compacted pole piece with roll squeezer, is made negative
Very big piece, 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；
S43：The preparation of high pressure single battery：According to shown in Fig. 1 sequentially include 1.:Positive plate (3)-membrane (4)-negative plate (6)-absolutely
Velum (5)-... positive plate (3)-membrane (4)-negative plate (6)-membrane (4) and single battery flexible packaging film (8)；Wherein,
Membrane (4) is interval between positive plate (3) and negative plate (6) successively, and membrane (4) is interval in negative plate (6) and positive plate successively
(3) between；②:It is first that first positive plate (3) and last negative plate (6) is reserved；③:Then 2. walk, according to Fig. 1 institutes
Show order by negative plate (6) and positive plate (3) conductor adapting piece (9) Series connection welding ... negative plate (6) and positive plate (3)
With conductor adapting piece (9) Series connection welding, and according to required monomer battery voltage value and existing material system in tradition
Lower attainable cell voltage value of method come calculate determine how many：Such negative plate (6) and the series connection of positive plate (3)
Welding；Non-welded part between conductor adapting piece (9) and all pole pieces is spaced with insulation board (7)；④:Cathode is by reserved
First positive pole aluminium foil collector and aluminium pole ears (1) weld together, and anode is by last reserved negative copper foil collector
Weld together with nickel lug (2)；⑤:To be welded anode ear (1), negative electrode lug (2) and 3. middle series welding connect it is multigroup negative
According to total order in 1. by the way of spooled laminations, how electric the winding for being assembled into the regulation number of plies is for pole piece (6) and positive plate (3)
Core monomer；⑥:And the more battery core monomers of winding assembled in 5. are packed with aluminum plastic film (8)；⑦:Fill electrolyte simultaneously
Battery is melted into after encapsulation, aging, the monomer-polymer lithium ion battery of required size is made；S5：According to can be with S3
The designing scheme of the high pressure single battery of use carries out the assembling of battery pack.
Applied to each above-mentioned technical proposal, in the production method, the battery pack of high pressure single battery can be used
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 is adapted to
The high voltage single battery A of electric bicycle, battery pack section is growth quadrangle during assembling, and side, front are quadrangularlies；
Second scheme is only with a kind of model and is adapted to the high voltage single battery B of electric automobile, battery pack section during assembling
It is 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 be adapted to power energy storage high voltage single battery C；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.
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 nanotubes, graphene and VGCF
Thing；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 voltage：High pressure single battery is using plural serial stage technique and spooled laminations in single battery
Technique is made, and can be reached under conventional method according to required monomer battery voltage value and existing material system
To cell voltage value it is definite to calculate；Such as 2.4 volts of the voltage of lithium titanate class single battery, but in monomer using the present invention
4.8 volts or more required any high voltages can be reached in battery after plural serial stage technique；Such as LiFePO4 class
The voltage of single battery is 3.2 volts, but can reach 6.4 volts after plural serial stage technique in single battery using the present invention
Or more required any high voltage；Such as three the voltage of metaclass single battery be 3.7 volts；Such as multiple aggregation species monomer
The voltage of battery is 4.3 volts, but can reach after plural serial stage technique in single battery using the present invention 8.6 volts or
Required any high voltage above.
2nd, battery volume reduces：Because high pressure single battery realize monomer high voltage, it is possible to reduce single battery it
Between series connection, so including single battery and its battery pack can volume reduce 30%-50% with upper volume.
3rd, energy density increases：Because high pressure single battery realize monomer high voltage, it is possible to increase single battery it
Between parallel connection, so the energy density of more than 20%-50% can be increased including battery pack and its battery pack.At the same time using electrification
Learn the Soft Roll formula polymer Li-ion battery of function admirable.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 automobile.
4th, uniformity increases：Battery volume reduces, single battery and its battery pack quantity are reduced, battery pack and its battery
Group bag can increase uniformity, also be easier to realize wisdom management and easily putting maintenance into practice.
5th, internal resistance reduces：Stacked high pressure single battery is used at the same time, and lug is wider, so that effective biography of electronics
Sectional area increase is led, the internal resistance of battery is just reduced than other modes battery, the high-rate discharge ability of battery is improved and makes
Use efficiency.
6th, more superior cycle performance：At the same time 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：Current reduction of the laminated batteries by each pole piece is used at the same time, can be mitigated big
Battery-heating phenomenon during current discharge and the security incident for avoiding lug fusing from producing.
8th, preparation method of the invention is simple and practicable, and production efficiency is high, is conducive to popularity application.
Brief 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.
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 positive and negative pole material system and its voltage value that battery cell design should use.
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 pressure single battery：Wherein, the first scheme be only with
A kind of model and be adapted to the high voltage single battery A of electric bicycle, battery pack section is growth quadrangle during assembling, side
Face, front are quadrangularlies；Second scheme is the high voltage single battery only with a kind of model and suitable electric automobile
B, battery pack section is into square during assembling, and side, front are growth quadrangles；The third scheme is using a kind of long
Spend that big width is big and thickness is thin and is adapted to the high voltage 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 pressure single battery is made using multigroup battery core tandem process in single battery and spooled laminations technique：It
Including according to shown in Fig. 1 order 1.:Positive plate (3)-membrane (4)-negative plate (6)-membrane (4)-... positive plate (3)-membrane
(4)-negative plate (6)-membrane (4) and single battery flexible packaging film (8)；Wherein, membrane (4) be interval in successively positive plate (3) and
Between negative plate (6), membrane (4) is interval between negative plate (6) and positive plate (3) successively；②:First by first positive plate
(3) and last negative plate (6) is reserved；③:Then the 2. walk, according to order shown in Fig. 1 by negative plate (6) and positive plate (3)
With conductor adapting piece (9) Series connection welding ... negative plate (6) and positive plate (3) conductor adapting piece (9) Series connection welding, and press
According to required monomer battery voltage value and existing material system, the attainable cell voltage value of institute comes under conventional method
Calculate and determine that how many is a：Such negative plate (6) and the Series connection welding of positive plate (3)；In conductor adapting piece (9) and all poles
Non-welded part between piece is spaced with insulation board (7)；④:Cathode is by reserved first positive pole aluminium foil collector and aluminium pole ears
(1) weld together, anode is welded together by reserved last negative copper foil collector and nickel lug (2)；⑤:Will weldering
Anode ear (1), negative electrode lug (2) and multigroup negative plate (6) that 3. middle series welding connects and positive plate (3) are connected according to total in 1.
Order is assembled into the more battery core monomers of winding of the regulation number of plies by the way of spooled laminations；⑥:And the volume that will be assembled in 5.
Packed around more battery core monomers with aluminum plastic film (8)；Aluminum plastic film (or shell) is wrapped in outermost；The cathode includes anode collection
Body and active material first layer.The anode includes negative current collector and active material second layer.The wherein described active material first
Layer is made of the raw material of following mass percent：Active material first：95%-99%, conductive agent 0.5%-3.0%, binding agent
0.5%-2%, the surface density of active material first layer is 15-27mg/cm2, and thickness is 109-177 μm.Wherein, the active material
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 nanotubes, graphene and VGCF；Bond
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 is graphite, gram volume >=330mAh/g of active material second；Lead
Electric agent is any one or a few the mixture in conductive carbon, carbon nanotubes, graphene and VGCF；Thickener is fine for carboxymethyl
The plain sodium of dimension；Binding agent butadiene-styrene latex.Wherein, the preparation method of the cathode 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, cathode 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 anode
Method is：First active material second, conductive agent, thickener, binding agent and solvent are mixed to form active material layer second layer slurry
Active material layer second layer slurry, is then coated on the surface of negative current collector by material, forms active material layer second layer, is dried, then
Pole piece is compacted with roll squeezer, anode 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 pressure single battery is：According to shown in Fig. 1 sequentially include 1.:Positive plate (3)-membrane
(4)-negative plate (6)-membrane (4)-... positive plate (3)-membrane (4)-negative plate (6)-membrane (4) and single battery Soft Roll
Fill film (8)；Wherein, membrane (4) is interval between positive plate (3) and negative plate (6) successively, and membrane (4) is interval in anode successively
Between piece (6) and positive plate (3)；②:It is first that first positive plate (3) and last negative plate (6) is reserved；③:Then
2. the walks, according to order shown in Fig. 1 by negative plate (6) and positive plate (3) conductor adapting piece (9) Series connection welding ... negative plate
(6) and positive plate (3) conductor adapting piece (9) Series connection welding, and according to required monomer battery voltage value and existing
Material system under conventional method the attainable cell voltage value of institute come calculate determine how many：Such negative plate (6) and
The Series connection welding of positive plate (3)；Non-welded part between conductor adapting piece (9) and all pole pieces is spaced with insulation board (7)；
④:Cathode is welded together by reserved first positive pole aluminium foil collector and aluminium pole ears (1), and anode is by last reserved
Negative copper foil collector and nickel lug (2) weld together；⑤:Anode ear (1), negative electrode lug (2) and 3. middle series connection will be welded
The multigroup negative plate (6) and positive plate (3) being welded according to total order in 1. using spooled laminations by the way of, assembling established practice
The more battery core monomers of winding of given layer number；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 monomer-polymer lithium-ion electric of required size is made
Pond.
Embodiment 1
The preparation method of the battery pack of the present embodiment, it includes following preparation process：
The preparation of cathode：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
Material 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 material 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 cathode 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 anode：Anode uses Delanium to be used as cathode size using deionized water as negative electrode active material
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%, and cathode is used as using 10 μm of copper foils
Active material second layer slurry, is then coated on the surface of 10 μm of copper foils by collector, forms active material second layer, drying, then use
Pole piece is compacted that anode 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 pressure single battery：The preparation method of the high pressure single battery is：According to Fig. 1
Shown order is included 1.:Positive plate (3)-membrane (4)-negative plate (6)-membrane (4)-... positive plate (3)-membrane (4)-
Negative plate (6)-membrane (4) and single battery flexible packaging film (8)；Wherein, membrane (4) is interval in positive plate (3) and anode successively
Between piece (6), membrane (4) is interval between negative plate (6) and positive plate (3) successively；②:First by first positive plate (3)
It is reserved with last negative plate (6)；③:Then the 2. walk, according to order shown in Fig. 1 by negative plate (6) and positive plate (3) with leading
Body connector (9) Series connection welding ... negative plate (6) and positive plate (3) conductor adapting piece (9) Series connection welding, and according to institute
The monomer battery voltage value needed and existing the material system attainable cell voltage value of institute under conventional method calculate
It is a how many is determined：Such negative plate (6) and the Series connection welding of positive plate (3)；In conductor adapting piece (9) and all pole pieces
Between non-welded part with insulation board (7) be spaced；④:Cathode is by reserved first positive pole aluminium foil collector and aluminium pole ears
(1) weld together, anode is welded together by reserved last negative copper foil collector and nickel lug (2)；⑤:Will weldering
Anode ear (1), negative electrode lug (2) and multigroup negative plate (6) that 3. middle series welding connects and positive plate (3) are connected according to total in 1.
Order is assembled into the more battery core monomers of winding of the regulation number of plies by the way of spooled laminations；⑥:And the volume that will be assembled in 5.
Packed around more battery core monomers with aluminum plastic film (8)；⑦:Add or inject nonaqueous electrolytic solution, electrolyte is that the LiPF4 of 1mol/L is molten
Liquid, is melted into battery after encapsulation, aging, and according to required size, A monomer-polymer lithium ion batteries are made.
The packet 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 following, 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 positioned at identical total shelves assemble according to parallel way.
Embodiment 2
The preparation method of the battery pack of the present embodiment, it includes following preparation process：
a）The preparation of cathode：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
Material 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 material 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 cathode 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 anode：Anode uses Delanium to be starched as negative electrode active material using deionized water as anode
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
Active material second layer slurry, is then coated on the surface of 10 μm of copper foils by plus plate current-collecting body, forms active material second layer, is dried,
Pole piece is compacted with roll squeezer again anode 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 pressure single battery：The preparation method of the high pressure single battery is：According to sequentially including handle shown in Fig. 1
①:Positive plate (3)-membrane (4)-negative plate (6)-membrane (4)-... positive plate (3)-membrane (4)-negative plate (6)-membrane
(4) and single battery flexible packaging film (8)；Wherein, membrane (4) is interval between positive plate (3) and negative plate (6) successively, membrane
(4) it is interval in successively between negative plate (6) and positive plate (3)；②:First by first positive plate (3) and last anode
Piece (6) is reserved；③:Then the 2. walk, according to order shown in Fig. 1 by negative plate (6) and positive plate (3) conductor adapting piece (9) string
Connection welding ... negative plate (6) and positive plate (3) conductor adapting piece (9) Series connection welding, and according to required single battery electricity
Pressure value and existing material system under conventional method the attainable cell voltage value of institute come calculate determine how many：This
The negative plate (6) of sample and the Series connection welding of positive plate (3)；Non-welded part between conductor adapting piece (9) and all pole pieces
It is spaced with insulation board (7)；④:Cathode is welded together by reserved first positive pole aluminium foil collector and aluminium pole ears (1), anode
Welded together by reserved last negative copper foil collector and nickel lug (2)；⑤:Anode ear (1), anode will be welded
The multigroup negative plate (6) and positive plate that ear (2) and 3. middle series welding connect (are made according to the voltage and size of required single battery
B monomer polymer Li-ion battery.
d）The packet 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, the width 100- of preferably 12.0mm or following, monomer B
1500mm, preferably 200mm；The length 600-3300mm of monomer B, preferably 1800mm；Every piece of battery pack is all by the position of above-mentioned size
Assemble in 100 pieces of single battery B of identical total shelves according to parallel way.
Embodiment 3
The preparation method of the battery pack of the present embodiment, it includes following preparation process：
a）The preparation of cathode：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
Material 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 material 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 cathode 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 anode：Anode uses Delanium to be starched as negative electrode active material using deionized water as anode
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
Active material second layer slurry, is then coated on the surface of 10 μm of copper foils by plus plate current-collecting body, forms active material second layer, is dried,
Pole piece is compacted with roll squeezer again anode 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 pressure single battery：The preparation method of the single battery is：According to sequentially including shown in Fig. 1 1. just
Pole piece (3)-membrane (4)-negative plate (6)-membrane (4)-... positive plate (3)-... positive plate (3)-membrane (4)-anode
Piece (6)-membrane (4) and single battery flexible packaging film (8)；Wherein, membrane (4) is interval in positive plate (3) and negative plate (6) successively
Between, membrane (4) is interval between negative plate (6) and positive plate (3) successively；②:First by first positive plate (3) and finally
One negative plate (6) is reserved；③:Then the 2. walk, connect negative plate (6) with positive plate (3) with conductor according to order shown in Fig. 1
Part (9) Series connection welding ... negative plate (6) and positive plate (3) conductor adapting piece (9) Series connection welding, and according to required list
Body battery voltage value and existing the material system attainable cell voltage value of institute under conventional method have determined to calculate
How many：Such negative plate (6) and the Series connection welding of positive plate (3)；It is non-between conductor adapting piece (9) and all pole pieces
Welding position is spaced with insulation board (7)；④:Cathode is welded on by reserved first positive pole aluminium foil collector and aluminium pole ears (1)
Together, anode is welded together by reserved last negative copper foil collector and nickel lug (2)；⑤:Cathode will be welded
Ear (1), negative electrode lug (2) and multigroup negative plate (6) that 3. middle series welding connects and positive plate (3) are used according to total order in 1.
The mode of spooled laminations, is assembled into the more battery core monomers of winding of the regulation number of plies；⑥:And the more battery cores of winding that will be assembled in 5.
Monomer is packed with aluminum plastic film (8)；⑦:Add or inject nonaqueous electrolytic solution, electrolyte is the LiPF4 solution of 1mol/L, is encapsulated
Battery is melted into afterwards, aging, C monomer polymer Li-ion electricity is made according to the voltage and size of required single battery
Pond.
d）The packet 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 following, 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 positioned at identical total shelves assemble according to parallel way.
It these are only the implementation example of the present invention, be not intended to limit the invention, it is all in the spiritual and former of the present invention
All any modification, equivalent and improvement made within then etc., are included within protection scope of the present invention：A 1. hair
It is bright to use existing material including but not limited to single battery, also include using the material newly created afterwards；2. present invention bag
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 use 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 method that single battery realizes high pressure, it is characterised in that：It is using multigroup battery core tandem process in single battery
It is made with spooled laminations technique, includes according to order figure one Suo Shi 1., positive plate (3)-membrane (4)-negative plate (6)-every
Film (4)-... positive plate (3)-membrane (4)-negative plate (6)-membrane (4) and single battery flexible packaging film (8)；Wherein, membrane
(4) be interval in successively between positive plate (3) and negative plate (6), membrane (4) be interval in successively negative plate (6) and positive plate (3) it
Between；It is 2. first that first positive plate (3) and last negative plate (6) is reserved；3. then 2. walk, according to suitable shown in figure one
Sequence is by negative plate (6) and positive plate (3) with conductor adapting piece (9) Series connection welding ... negative plate (6) and positive plate (3) with leading
Body connector (9) Series connection welding, and according to required monomer battery voltage value and existing material system in conventional method
The attainable cell voltage value of lower institute come calculate determine how many：Such negative plate (6) and the series welding of positive plate (3)
Connect；Non-welded part between conductor adapting piece (9) and all pole pieces is spaced with insulation board (7)；4. cathode is by reserved the
One positive pole aluminium foil collector and aluminium pole ears (1) weld together, anode by last reserved negative copper foil collector and
Nickel lug (2) welds together；5. anode ear (1), negative electrode lug (2) and multigroup anode that 3. middle series welding connects will be welded
Piece (6) and positive plate (3) by the way of spooled laminations, are assembled into the more battery cores of winding of the regulation number of plies according to total order in 1.
Monomer；6. and the more battery core monomers of winding assembled in 5. are packed with aluminum plastic film (8)；7. filling electrolyte simultaneously seals
Battery is melted into after dress, aging, the single battery of required size is made；Cathode includes plus plate current-collecting body 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, and thickness is 109-177 μm；
Anode includes negative current collector and active material second layer, active material second layer are made of the raw material of following mass percent：Activity
Material second：95.0%-99.0%, conductive agent：0.5%-2.0%, thickener：0-1.0%, binding agent：0.5-3.0%, wherein, active matter
The surface density 7-15mg/cm2 of matter second layer, 115-188 μm of thickness.
2. high pressure single battery according to claim 1, 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
Any one or a few mixture in nanotube, graphene and VGCF；Binding agent is PVDF；Active material second is graphite,
Gram volume >=330mAh/g of active material second；Conductive agent is any one in conductive carbon, carbon nanotubes, graphene and VGCF
Or several mixture；Thickener is sodium carboxymethylcellulose；Binding agent butadiene-styrene latex.
3. high pressure single battery according to claim 1 or 2, it is characterised in that：Have in single battery multiple by cathode
The single battery core of piece (3)-membrane (4)-negative plate (6) composition；There is membrane (4) being spaced between its battery core and battery core.
4. according to the high pressure single battery described in claim 1 or 2 or 3, it is characterised in that：It is to be connected in series between multiple battery cores
's；The position that should not be connected being connected in series between part and multiple battery cores has insulation board (7) to insulate, and plays sealing
Effect.
5. according to the high pressure single battery described in claim 1 or 2 or 3 or 4, it is characterised in that：This multicore single battery can obtain
The voltage obtained is above one times and more times of single single battery；Electrolyte is filled with the high pressure single battery of this multicore.
A kind of 6. preparation method for the high pressure single battery for being used to make battery pack, it is characterised in that：
S1：The cathode of high pressure single battery is prepared using plus plate current-collecting body and active material first layer：Wherein, active material first layer by
The raw material composition 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 material first layer slurry, are then coated with activity material first layer slurry
On the surface of plus plate current-collecting body, activity material first layer is formed, is dried, then is compacted pole piece with roll squeezer, cathode 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：Adopt
The anode of high pressure single battery is prepared with negative current collector and active material second layer：Wherein, active material second layer is by following quality
The raw material composition of percentage：Active material second：95.0%-99.0%, conductive agent：0.5%-2.0%, thickener：0-1.0%, bonds
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 is compacted pole piece with roll squeezer, is made
Anode 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 pressure single battery：Include according to order figure one Suo Shi 1.:Positive plate (3)-membrane (4)-negative plate (6)-membrane
(4)-... positive plate (3)-membrane (4)-negative plate (6)-membrane (4) and single battery flexible packaging film (8)；Wherein, membrane
(4) be interval in successively between positive plate (3) and negative plate (6), membrane (4) be interval in successively negative plate (6) and positive plate (3) it
Between；②:It is first that first positive plate (3) and last negative plate (6) is reserved；③:Then 2. walk, according to suitable shown in figure one
Sequence is by negative plate (6) and positive plate (3) with conductor adapting piece (9) Series connection welding ... negative plate (6) and positive plate (3) with leading
Body connector (9) Series connection welding, and according to required monomer battery voltage value and existing material system in conventional method
The attainable cell voltage value of lower institute come calculate determine how many：Such negative plate (6) and the series welding of positive plate (3)
Connect；Non-welded part between conductor adapting piece (9) and all pole pieces is spaced with insulation board (7)；④:Cathode is by reserved the
One positive pole aluminium foil collector and aluminium pole ears (1) weld together, anode by last reserved negative copper foil collector and
Nickel lug (2) welds together；⑤:Anode ear (1), negative electrode lug (2) and multigroup anode that 3. middle series welding connects will be welded
Piece (6) and positive plate (3) by the way of spooled laminations, are assembled into the more battery cores of winding of the regulation number of plies according to total order in 1.
Monomer；⑥:And the more battery core monomers of winding assembled in 5. are packed with aluminum plastic film (8)；⑦:Filling electrolyte simultaneously seals
Battery is melted into after dress, 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, activity
Gram volume >=330mAh/g of material second；Conductive agent is any one in conductive carbon, carbon nanotubes, graphene and VGCF or several
The mixture of kind；Thickener is sodium carboxymethylcellulose；Binding agent butadiene-styrene latex.
A kind of 8. 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, draws the high pressure single battery that can be used
Designing scheme；S4：The preparation of high pressure single battery, it includes:S41：Prepared using plus plate current-collecting body and active material first layer
The cathode of high pressure 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
Activity material first layer slurry, is then coated on the surface of plus plate current-collecting body, forms activity material first by material first layer slurry
Layer, drying, then be compacted pole piece with roll squeezer, cathode 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：High pressure is prepared using negative current collector and active material second layer
The anode 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, the face of active material second layer is close
Spend 7-15mg/cm2,115-188 μm of thickness；First active material second, conductive agent, thickener, binding agent and solvent are mixed
Active material layer second layer slurry is formed, then active material layer second layer slurry is coated on to the surface of negative current collector, is formed and lived
Property material layer second layer, pole piece then is compacted by drying with roll squeezer, is made that anode is large stretch of, and then cutting machine using sheet-punching machine or film will
Prescribed level and the cathode pole piece with copper foil current collector is made in sheet；S43：The preparation of high pressure single battery：According to shown in figure one
Order is included 1.:Positive plate (3)-membrane (4)-negative plate (6)-membrane (4)-... positive plate (3)-membrane (4)-anode
Piece (6)-membrane (4) and single battery flexible packaging film (8)；Wherein, membrane (4) is interval in positive plate (3) and negative plate (6) successively
Between, membrane (4) is interval between negative plate (6) and positive plate (3) successively；②:First by first positive plate (3) and finally
One negative plate (6) is reserved；③:Then the 2. walk, connect negative plate (6) and positive plate (3) with conductor according to order figure one Suo Shi
Fitting (9) Series connection welding ... negative plate (6) and positive plate (3) conductor adapting piece (9) Series connection welding, and according to required
Monomer battery voltage value and existing material system attainable cell voltage value of institute under conventional method are definite to calculate
How many is a：Such negative plate (6) and the Series connection welding of positive plate (3)；Between conductor adapting piece (9) and all pole pieces
Non-welded part is spaced with insulation board (7)；④:Cathode is welded by reserved first positive pole aluminium foil collector and aluminium pole ears (1)
Together, anode is welded together by reserved last 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) that 3. middle series welding connects and positive plate (3) are sequentially adopted according to total in 1.
With the mode of spooled laminations, the more battery core monomers of winding of the regulation number of plies are assembled into；⑥:It is and the winding assembled in 5. is how electric
Core monomer is packed with aluminum plastic film (8)；⑦:Battery is melted into after filling electrolyte and encapsulation, required ruler is made in aging
Very little single battery；S5：The assembling of battery pack is carried out according to the designing scheme for the high pressure single battery that can be used in S3.
9. production method according to claim 8, it is characterised in that：The designing scheme for the high pressure single battery that can be used
Including but not limited to following three kinds of designing schemes：Wherein, the first scheme is only with a kind of model and is adapted to electrical salf-walking
The high voltage single battery (A) of car, battery pack section is growth quadrangle during assembling, and side, front are quadrangularlies；Second
Scheme is only with a kind of model and is adapted to the high voltage single battery (B) of electric automobile, and battery pack section is into during assembling
Square, side, front are growth quadrangles；The third scheme be big using a kind of big width of length and thickness it is thin and
It is adapted to the high voltage single battery (C) of power energy storage；It is arranged in order vertically and horizontally during assembling and connects into battery pack, battery pack is cut
Face, 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 material second；Conductive agent be conductive carbon, carbon nanotubes, 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 |
|---|---|---|---|
| CN201810037081.0A CN107978800A (en) | 2018-01-15 | 2018-01-15 | Single battery is realized the method and preparation and its battery pack preparation method of high pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037081.0A CN107978800A (en) | 2018-01-15 | 2018-01-15 | Single battery is realized the method and preparation and its battery pack preparation method of high pressure |
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| CN110364672A (en) * | 2019-06-11 | 2019-10-22 | 温州大学新材料与产业技术研究院 | A kind of button cell of high voltage and preparation method thereof |
| CN114221072A (en) * | 2019-01-09 | 2022-03-22 | 比亚迪股份有限公司 | Battery pack without module frame, vehicle and energy storage device |
| CN114597391A (en) * | 2022-03-18 | 2022-06-07 | 安徽力源新能源有限公司 | Lithium-rich manganese-based composite single crystal ternary/silicon oxide composite graphite lithium ion battery |
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Application publication date: 20180501 |