CN105428728B - Polymer power battery and preparation method - Google Patents
Polymer power battery and preparation method Download PDFInfo
- Publication number
- CN105428728B CN105428728B CN201511017348.2A CN201511017348A CN105428728B CN 105428728 B CN105428728 B CN 105428728B CN 201511017348 A CN201511017348 A CN 201511017348A CN 105428728 B CN105428728 B CN 105428728B
- Authority
- CN
- China
- Prior art keywords
- battery
- battery core
- core
- plastic film
- aluminum plastic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The present invention is applied to field of batteries, there is provided a kind of, polymer power battery preparation method and the polymer power battery made using this method.The polymer power battery preparation method, comprises the following steps：System volume, encapsulation：Core is packaged in aluminum plastic film, to form battery core, and at least position corresponding to a side in battery core on aluminum plastic film is packaged with communicating pipe；Baking, fluid injection：Communicating pipe is connected with filling machine, and to fluid injection in battery core；Chemical conversion：Electrode is powered and activated, and caused gas in battery core is discharged by communicating pipe；It is made：The aluminum plastic film of battery core side after excision chemical conversion, then carry out secondary encapsulation and form battery., can be by communicating pipe to battery core fluid injection in fluid injection by encapsulating communicating pipe on aluminum plastic film, and in chemical conversion, by discharging caused gas in battery core communicating pipe, so as to when aluminum plastic film encapsulates core, it is not provided with air bag or less air bag is set, reduces waste, reduce cost.
Description
Technical field
The invention belongs to field of batteries, more particularly to a kind of polymer power battery preparation method and made using this method
Polymer power battery.
Background technology
Polymer battery is usually the structure using aluminum plastic film encapsulation core.The making side of the polymer battery of prior art
Method is：First dispensing, then core is made, be then packaged, toast successively, fluid injection, pre- envelope, chemical conversion, two envelopes, partial volume step and make
Into polymer battery.It is general that parcel is packaged to core using aluminum plastic film when wherein encapsulating, and in encapsulation, not only will
Aluminum plastic film is encapsulated in core, but also reserved one section in the side of core, and seals and air bag is made, to be walked in follow-up fluid injection
, can be by adding electrolyte into air bag come to battery liquid-filling in rapid；After fluid injection is complete, bladder port is sealed in advance, then entered
Row chemical conversion；During to Battery formation, gas can be typically produced, these gases can be collected in air bag, also, in order to exclude to be melted into rank
Gas caused by section, the mode extruded generally by external force, by gas exclusion into air bag, so being typically to add in chemical conversion
Temperature, pressurization；It is to be changed it is complete after, air bag is evacuated, cut off, two sealing side again.And using conductance is high, capacity is big, compares table
The big dispensing in face and electrolyte make the big battery of capacity, and gas caused by chemical conversion is also more, thus polymerize in the prior art
The capacity of thing battery is higher, and when it makes, the volume of air bag is also bigger, and this mode can produce great waste, and increase
The production cost of battery.
The content of the invention
It is an object of the invention to provide a kind of polymer power battery preparation method, it is intended to solves existing polymer power
Cost is high when battery makes, wastes the problem of big.
The present invention is achieved in that a kind of polymer power battery preparation method, comprises the following steps：
System volume：Preparation positive pole dispensing and cathode blending, and the positive pole dispensing is coated on aluminium foil positive plate is made, will
The cathode blending, which is coated on copper foil, is made negative plate, then the positive plate and the negative plate are made into core；
Encapsulation：Aluminum plastic film is set, the core is packaged in the aluminum plastic film, and the electrode in the core is drawn
The aluminum plastic film, to form battery core, and at least position corresponding to a side in the battery core on the aluminum plastic film is packaged with
Communicating pipe；
Baking：The battery core after encapsulation is toasted；
Fluid injection：The communicating pipe is connected with filling machine, and to fluid injection in the battery core；
Chemical conversion：The electrode is powered and activated, and caused gas in the battery core is discharged by the communicating pipe；
It is made：The aluminum plastic film of battery core side after excision chemical conversion, then the aluminum plastic film in the battery core is carried out
Secondary encapsulation, the battery core sealed envelope is formed into battery.
The present invention, in fluid injection, can be directly connected to filling machine, pass through communicating pipe by encapsulating communicating pipe on aluminum plastic film
To battery core fluid injection, and in chemical conversion, by discharging caused gas in battery core communicating pipe, so that when aluminum plastic film encapsulates core,
Air bag can be not provided with or less air bag is set, to reduce waste, reduce cost, while conductance height, capacity can be used
Greatly, the dispensing bigger than surface and electrolyte, to make the bigger battery of capacity.
Another object of the present invention is to provide a kind of polymer power battery, the polymer power battery is by as described above
Polymer power battery preparation method be made.
The polymer power battery of the present invention is made using the above method, and so as to which its waste is smaller, capacity can make more
Greatly.
Brief description of the drawings
Fig. 1 is made using the polymer power battery high-multiplying power discharge that preparation method of the present invention makes and existing method
The comparison diagram of polymer power battery high-multiplying power discharge；
Fig. 2 is the internal resistance distribution map for the polymer power battery that preparation method of the present invention makes；
Fig. 3 is the internal resistance distribution map for the polymer power battery that existing method makes；
Fig. 4 is the net powder specific capacity distribution map of positive pole for the polymer power battery that preparation method of the present invention makes；
Fig. 5 is the net powder specific capacity distribution map of positive pole for the polymer power battery that existing method makes；
Fig. 6 is a kind of flow chart of polymer power battery preparation method provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 6, a kind of polymer power battery preparation method provided in an embodiment of the present invention, comprises the following steps：
System volume S1：Preparation positive pole dispensing and cathode blending, and the positive pole dispensing is coated on aluminium foil positive plate is made,
The cathode blending is coated on copper foil negative plate is made, then core is made in the positive plate and the negative plate；
Encapsulate S2：Aluminum plastic film is set, the core is packaged in the aluminum plastic film, and the electrode in the core is drawn
Go out the aluminum plastic film, to form battery core, and encapsulated on the aluminum plastic film in the position at least corresponding to a side of the battery core
There is communicating pipe；
Toast S3：The battery core after encapsulation is toasted；
Fluid injection S4：The communicating pipe is connected with filling machine, and to fluid injection in the battery core；
It is melted into S5：The electrode is powered and activated, and caused gas in the battery core is discharged by the communicating pipe；
S6 is made：The aluminum plastic film of battery core side after excision chemical conversion, then the aluminum plastic film in the battery core is entered
Row secondary encapsulation, the battery core sealed envelope is formed into battery.
By encapsulating communicating pipe on aluminum plastic film, in fluid injection S4, communicating pipe can be connected with filling machine, so as to
By communicating pipe to battery core fluid injection, and the reservoir quantity to battery core can be controlled at any time by filling machine, so as to can be with fluid injection
Without air bag or less air bag can be set；And when being melted into S5, it can be discharged again by communicating pipe caused by battery core
Gas, so as to collect gas without air bag；Then when aluminum plastic film encapsulates core, air bag can be not provided with or set less
Air bag, waste to reduce, reduce cost, can be with while in fluid injection, during due to that can control the injection rate of electrolyte, and be melted into
Directly it is vented by communicating pipe, thus big conductance height, capacity, the dispensing bigger than surface and electrolyte can be used, so as to
Preferably to produce the bigger battery of capacity.After chemical conversion, the aluminum plastic film of battery core side can be cut off, it is unnecessary to remove
Aluminum plastic film, and after cutting off unnecessary aluminum plastic film, opening occurs in battery core side, thus carries out secondary envelope to the aluminum plastic film in battery core
Dress, battery core is sealed, to form battery.In S6 steps are made air bag, pumping, sealing are punctured without using traditional
Process, efficiency can be improved.
Further, described be made before S6 steps also includes step：The fluid injection S4 steps are repeated to walk with the chemical conversion S5
Suddenly, until injection electrolyte reaches setting value in the battery core.The theoretical fluid injection value that the setting value can design for battery core,
It can be the value that the electrolyte that needs inject is determined during design.Set and repeat the fluid injection S4 steps and the chemical conversion S5 steps,
It by multiple fluid injection and chemical conversion, can make to be held into more electrolyte in battery core, and battery core is more fully activated, improve battery core
Electrical property.
Further, to repeat the fluid injection S4 steps not of the same race with being used in the chemical conversion S5 steps, during each fluid injection
The electrolyte of class.Different types of electrolyte is used in each fluid injection, then can be according to the state of battery core, designing needs to make
With different electrolyte, so as to improve the electrical property of battery core.Certainly, in some other embodiment, each fluid injection can also make
With the electrolyte of identical type.
Further, in the present embodiment, the fluid injection S4 steps are repeated twice with the chemical conversion S5 steps, first carry out first
Secondary fluid injection S4a：To the 60%~80% of battery core injection total fluid-injecting amount, then carry out chemical conversion S5a for the first time：The electrode is powered,
It is 3.5V~3.8V to charge to voltage range；Second of fluid injection S4b is carried out afterwards：Remaining electrolyte is injected to total to battery core supplement
Reservoir quantity, then carry out second of chemical conversion S5b：The electrode is powered, it is 3.8V~3.9V to charge to voltage range.By fluid injection S4
Step is repeated twice with chemical conversion S5 steps, and in first time fluid injection S4a, fluid injection only injects design or total fluid injection of theory to battery core
The 60%~80% of amount, so that these electrolyte quickly can be absorbed by battery core, efficiency is improved, then to battery core first timeization
Into it is 3.5V~3.8V battery core is charged to voltage range, so that electrolyte isoreactivity material can fully and quickly live in battery core
Change；Second of fluid injection S4b step and second of chemical conversion S5b step are carried out again, supplement remaining electrolyte, then carry out secondaryization
Into it is 3.8V~3.9V battery core is charged to voltage range, horizontal and living to improve the capacity performance of electrolyte isoreactivity material
Change performance, improve the electrical properties such as the capacity of battery core.
Preferably, when to battery core chemical conversion S5a for the first time, it is 3.6V~3.7V battery core is charged to voltage range, to carry
Overactivity efficiency.Preferably, when to second of chemical conversion S5b of battery core, it is 3.85V battery core is charged to voltage, so that battery core
Electrical property is optimal.
In other embodiments, fluid injection S4 steps and chemical conversion S5 steps can also be repeated more times, fluid injection several times with
Chemical conversion activation, preferably to carry out fluid injection and electricizing activation to battery core, improve the electrical property of battery core.
Further, also include the communicating pipe with evacuator being connected in the chemical conversion S5 steps, and described in control
Vacuum in aluminum plastic film.In S5 steps are melted into, communicating pipe is connected with evacuator, can be controlled by evacuator
Vacuum in aluminum plastic film, keep battery core to be melted under conditions of negative pressure, extracted out in time by communicating pipe caused in battery core
Gas, to ensure that (solid electrolyte interface film, English is solid to the SEI films at the positive pole interface of battery core and cathode interface
Electrolyte interface, abbreviation SEI film) growth uniformity, prevent gas from being remained between positive plate and negative plate,
And then prevent that analysing lithium phenomenon occurs, and improves the electrical property and security of battery core.
Further, the scope of air pressure is -0.01MPa~-0.1MPa in the aluminum plastic film.By air pressure range in aluminum plastic film
It is electric with efficient and good extraction even if vacuum is 0.01MPa~0.1MPa in aluminum plastic film for -0.01MPa~-0.1MPa
The gas produced on core, and when air pressure is higher than -0.01MPa (negative 0.01MPa), i.e., when vacuum is less than 0.01MPa, vacuum is not
Foot, gas is taken out unclean.Preferably, air pressure range is -0.06MPa~-0.08MPa in aluminum plastic film, makes vacuum in aluminum plastic film
For 0.06MPa~0.08MPa, so as to keep more preferably vacuum in aluminum plastic film, vacuum is less than 0.06 in aluminum plastic film, gas meeting
Take out unclean, and vacuum is higher than 0.08Mpa in aluminum plastic film, and electrolyte solution loss is too big.
Further, in the encapsulation S2 steps, the side of the aluminum plastic film is packaged with the connection communicating pipe and institute
State the chamber capsule of core.Aluminum plastic film encapsulate core when, core side formed chamber capsule, can preferably by communicating pipe come to
Battery core fluid injection, electrolysis liquid energy is set first to be injected into chamber capsule, then transit chamber capsule enters battery core, improves fluid injection efficiency；In addition, when in battery core
When producing gas, chamber capsule can also be introduced into, or is extracted into chamber capsule, then is discharged through communicating pipe, improves the efficiency of gas discharge.
Further, the block for blocking the communicating pipe is detachably installed on the communicating pipe.Set on communicating pipe
Block is put, when can switch or shift between fluid injection S4 steps, chemical conversion S5 steps, communicating pipe can be blocked, preferably to protect
Shield battery core simultaneously prevents electrolyte from leaking.Communicating pipe can be fiber glass reinforced polypropylene pipe (abbreviation PP pipes), and aluminium is encapsulated in facilitate
In plastic film.
Further, filling machine can use the fiber glass reinforced polypropylene bag (abbreviation PP bags) for being stored with electrolyte, then lead to
Cross flexible pipe PP bags are connected with communicating pipe, fluid injection is carried out to battery core by the way of having an intravenous drip in similar to hospital, so as to
While to battery core fluid injection, while being evacuated to battery core, to realize the synchronous processing efficiency for carrying out, improving battery of fluid injection, chemical conversion.
A communicating pipe is packaged with the present embodiment, on aluminum plastic film, fluid injection and chemical conversion are separated into progress.In other embodiments
In, multiple communicating pipes can also be encapsulated on aluminum plastic film, such as encapsulate two communicating pipes, one is connected with filling machine, another with
Evacuator is connected, and so as to be carried out to battery core fluid injection and chemical conversion simultaneously, while control that can also be more convenient is to battery core
Injection electrolyte process and to battery coreization activation charging process, with improve the electrical property of battery core and improve battery processing
Producing efficiency.Further, two communicating pipes was separately positioned on the opposite sides of battery core, then can from the side fluid injection of battery core,
And be vented from the opposite side of battery core, it can also preferably prevent electrolyte to be evacuated machine extraction.Certainly, can be sealed on aluminum plastic film
More communicating pipes are filled, so as to connect multiple filling machines, to improve fluid injection efficiency；It can in addition contain pass through different fluid injections
Machine injects different types of electrolyte to battery core, to improve the capacitance of battery core.
Further, in the present embodiment, in system volume S1 steps, positive pole dispensing is coated on aluminium foil positive plate is made, will
Cathode blending, which is coated on copper foil, is made negative plate, can disperse positive pole dispensing and cathode blending at a high speed using emulsifying homogeneous
Uniform and stable slurry is made in method, then is realized using extruding spraying process or transfer coated method.Further, in order to reduce
The thickness of positive plate and negative plate, can be to positive plate and negative plate to accommodate more electrode material in higher volume
Two pairs of rollers are carried out to roll.
Further, in order to improve processing efficiency, cost is reduced, the positive plate and negative plate of sheet can be made, is being incited somebody to action
Large stretch of positive plate and negative plate cuts into the positive plate and negative plate of fritter.Entire volume positive plate or negative pole can be used during cutting
Piece is divided into the technique of rouleau positive plate or negative plate, can also use sheet-punching machine that the positive plate of sheet and negative plate are washed into fritter
Positive plate and negative plate technique, can also be cut using die-cutting machine.
Further, by core made of positive plate and negative plate, core can be lamination, or winding
Structure.And when encapsulating communicating pipe on aluminum plastic film, the packaging machine with U-shaped end socket can be used to carry out, to prevent damage from connecting
Pipe.
Further, the polymer power battery preparation method of the embodiment of the present invention can use conductance is high, capacity is big,
The dispensing bigger than surface, in the present embodiment, the positive pole dispensing includes positive major ingredient, positive electrode binder and positive conductive agent.Its
In, the positive major ingredient can be cobalt acid lithium or ternary or LiFePO4 or LiMn2O4；The positive electrode binder is Kynoar
(English abbreviation PVDF)；The positive conductive agent is included in CNT (English abbreviation CNT), conductive black, graphene
One or more.Further, when using LiFePO4 for positive major ingredient, positive electrode binder can be added water-based viscous using PVDF
Tie agent, as aqueous binders can be acrylonitrile multiple copolymer aqueous dispersions, such as use propylene of the trade name for LA133
The aqueous dispersions of nitrile multiple copolymer add PVDF to make positive electrode binder.As conductive black can use trade name for
Super-p conductive black.It follows that the polymer power battery preparation method of the present invention can use a variety of electrode materials
Make positive pole dispensing.
In some other embodiment, it is preferable that when positive major ingredient uses LiFePO4, battery core charges to voltage range and is
3.65V~2.0V.
Further, the cathode blending includes negative major ingredient, negative electrode binder and cathode conductive agent.Wherein described negative major ingredient
For graphite or the modifier of graphite；The negative electrode binder is oiliness binding agent or aqueous binders；The cathode conductive agent bag
Include the one or more in CNT, conductive black, graphene.Specifically, the modifier of above-mentioned graphite can answer for silicon-carbon
Close graphite.Above-mentioned oiliness binding agent can be Kynoar (English abbreviation PVDF).Above-mentioned aqueous binders can be fourth
The water-based bonding of Atrolactamide (English abbreviation SBR) plus sodium carboxymethylcellulose (English abbreviation CMC), i.e. SBR+CMC systems
Agent.As conductive black can use conductive black of the trade name for Super-p.It follows that the polymer power of the present invention
Battery production method can use a variety of electrode materials to make cathode blending.
The embodiment of the invention also discloses a kind of polymer power battery, and the polymer power battery by gathering as described above
Compound electrokinetic cell preparation method is made.The polymer power battery is made using the above method, so as to which its waste is smaller,
Capacity can make bigger.
Below by way of using same ingredients, the polymer made using the polymer power battery preparation method of the present invention is moved
Power battery (battery hereinafter referred to as of the present invention) and the polymer power battery (hereinafter referred to as conventional batteries) that conventional method makes are right
Test comparison is tested to further illustrate the polymer power battery preparation method of the present invention to polymer power battery electrical property
Lifting effect：
Referring to Fig. 1, use battery high-multiplying power discharge 11 of the present invention and the comparison diagram of conventional batteries high-multiplying power discharge 91：
Because if polymer battery will use as electrokinetic cell, high power discharge is generally required, thus in high magnification
Electric discharge is lower, it is necessary to there is higher discharge capacity.Abscissa Discharge rate (c) represent discharge-rate, discharge-rate in Fig. 1
Refer to multiple of the battery discharge relative to battery nominal discharge current.Ordinate Discharge capacity rate in Fig. 1
(%) represents the discharge capacity ratio of battery.Fig. 1 center lines 11 represent the figure of taking out stitches of battery high-multiplying power discharge of the present invention；Line 91 represents
The figure of taking out stitches of conventional batteries high-multiplying power discharge.As shown in Figure 1, battery of the present invention passes through 5 with conventional batteries from 100% capacitance
Multiplying power discharging to 10 multiplying power dischargings are understood, in 10 multiplying power discharging, battery high-rate discharge ability of the present invention and conventional batteries
High-rate discharge ability is obviously improved.Thus, it will also realize in Fig. 1 that, the multiplying power output performance of battery battery core of the present invention compared to
The multiplying power output performance of conventional batteries is obviously improved, while illustrates the battery core of the polymer power battery preparation method of the present invention
Pole piece interface consistency and power out-put characteristic it is more preferable.
Fig. 2 and Fig. 3 are referred to, Fig. 2 is that the polymer power battery that preparation method of the present invention makes is (hereinafter referred to as of the invention
Battery) internal resistance distribution map；Fig. 3 is the internal resistance point for the polymer power battery (hereinafter referred to as conventional batteries) that existing method makes
Butut.Battery of the present invention is using the chemical synthesizing method of the present invention, i.e., is melted under negative pressure of vacuum, and carried out under 3.65V current potentials
Supplement injection electrolyte and manufactured battery of the present invention.
Abscissa represents internal resistance value, unit m Ω in Fig. 2；Ordinate represents battery distributed quantity frequency of the present invention；N is represented
The quantity of battery of the present invention is sampled, N 49, it is to sample the distributed quantity under each internal resistance of battery of the present invention directly to put Figure 12；Average table
Show the internal resistance average for sampling battery of the present invention, its average is 3.679m Ω；Line 13 represents the normal state point of the internal resistance of battery of the present invention
Cloth curve；Standard deviation is the standard deviation of the normal distribution of the internal resistance of battery of the present invention, and its standard deviation is 0.04368.
Abscissa represents internal resistance value, unit m Ω in Fig. 3；Ordinate represents conventional batteries distributed quantity frequency；N represents to adopt
The quantity of sample conventional batteries, N 49, it is the distributed quantity under sampling each internal resistance of conventional batteries directly to put Figure 92；Average represents sampling
The internal resistance average of conventional batteries, its average are 3.692m Ω；Line 93 represents the normal distribution curve of the internal resistance of conventional batteries；Standard
Difference is the standard deviation of the normal distribution of the internal resistance of conventional batteries, and its standard deviation is 0.09018.
From Fig. 2 and Fig. 3 contrast, polymer battery that polymer power battery preparation method of the invention obtains
The standard deviation of internal resistance normal distribution is smaller, and the internal resistance normal distribution curve of battery of the present invention is narrower, the battery core of battery of the present invention
The uniformity of internal resistance is obviously improved, thus shows that the polymer power battery preparation method of the present invention can preferably lift battery core
The uniformity of electrode interface, effectively eliminate the gas between interface.
Fig. 4 and Fig. 5 are referred to, Fig. 4 is that the polymer power battery that preparation method of the present invention makes is (hereinafter referred to as of the invention
Battery) the net powder specific capacity distribution map of positive pole；Fig. 5 is polymer power battery (the hereinafter referred to as tradition electricity that existing method makes
Pond) the net powder specific capacity distribution map of positive pole.
Abscissa represents the net powder specific capacity of positive pole, unit mAh/g in Fig. 4；Ordinate represents battery distributed quantity of the present invention
Frequency；N represents the quantity of sampling battery of the present invention, N 49, directly puts Figure 14 to sample the net powder specific capacity of each positive pole of battery of the present invention
Under distributed quantity；Average represents the net powder specific capacity average of positive pole of sampling battery of the present invention, and its average is 165.4mAh/g；Line
15 represent the normal distribution curve of the net powder specific capacity of positive pole of battery of the present invention；Standard deviation is the net powder ratio of positive pole of battery of the present invention
The standard deviation of the normal distribution of capacity, its standard deviation are 0.6539.
Abscissa represents the net powder specific capacity of positive pole, unit mAh/g in Fig. 5；Ordinate represents conventional batteries distributed quantity frequency
Rate；N represents the quantity of sampling conventional batteries, and N 49, it is point under the sampling net powder specific capacity of each positive pole of conventional batteries directly to put Figure 94
Cloth quantity；Average represents the net powder specific capacity average of positive pole of sampling conventional batteries, and its average is 163.5mAh/g；Line 95 represents to pass
The normal distribution curve of the net powder specific capacity of positive pole of system battery；Standard deviation is divided for the normal state of the net powder specific capacity of positive pole of conventional batteries
The standard deviation of cloth, its standard deviation are 0.7036.
From Fig. 4 and Fig. 5 contrast, polymer battery that polymer power battery preparation method of the invention obtains
The standard deviation of the net powder specific capacity normal distribution of positive pole is smaller, and the net powder specific capacity normal distribution curve of positive pole of battery of the present invention is more
It is narrow；The net powder specific capacity of the positive pole powder specific capacity neter than the positive pole of conventional batteries of battery of the present invention is bigger；It follows that present invention electricity
The positive electrode active materials capacity of the battery core in pond is played and is obviously improved, thus shows the polymer power battery preparation method of the present invention
Infiltration to electrolyte has positive promotion, is advantageous to effective performance of active material capacity, and then improve the electrical of battery core
Energy and capacitance.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (9)
- A kind of 1. polymer power battery preparation method, it is characterised in that：Comprise the following steps：System volume：Preparation positive pole dispensing and cathode blending, and the positive pole dispensing is coated on aluminium foil positive plate is made, by described in Cathode blending, which is coated on copper foil, is made negative plate, then the positive plate and the negative plate are made into core；Encapsulation：Aluminum plastic film is set, the core is packaged in the aluminum plastic film, and by described in the electrode extraction in the core Aluminum plastic film, to form battery core, and at least position corresponding to a side in the battery core on the aluminum plastic film is packaged with connection Pipe；Baking：The battery core after encapsulation is toasted；Fluid injection：The communicating pipe is connected with filling machine, and to fluid injection in the battery core；Chemical conversion：The electrode is powered and activated, and caused gas in the battery core is discharged by the communicating pipe；It is made：The aluminum plastic film of battery core side after excision chemical conversion, then the aluminum plastic film in the battery core is carried out secondary Encapsulation, the battery core sealed envelope is formed into battery；Described be made before step also includes step：The fluid injection step and the chemical conversion step are repeated, until being noted in the battery core Enter electrolyte and reach setting value.
- 2. polymer power battery preparation method as claimed in claim 1, it is characterised in that using not of the same race during each fluid injection The electrolyte of class.
- 3. polymer power battery preparation method as claimed in claim 1, it is characterised in that the fluid injection step and describedization It is repeated twice into step, first carries out first time fluid injection：To the 60%~80% of battery core injection total fluid-injecting amount, then carry out first time Into：The electrode is powered, it is 3.5V~3.8V to charge to voltage range；Second of fluid injection is carried out afterwards：Supplement and note to battery core Enter remaining electrolyte to total fluid-injecting amount, then carry out second of chemical conversion：To the electrode be powered, charge to voltage range for 3.8V~ 3.9V。
- 4. the polymer power battery preparation method as described in claim any one of 1-3, it is characterised in that the chemical conversion step In also include the communicating pipe with evacuator being connected, and control the vacuum in the aluminum plastic film.
- 5. the polymer power battery preparation method as described in claim any one of 1-3, it is characterised in that in the encapsulation step In rapid, the side of the aluminum plastic film, which is packaged with, connects the communicating pipe and the chamber capsule of the core.
- 6. the polymer power battery preparation method as described in claim any one of 1-3, it is characterised in that on the communicating pipe The detachable block being provided with for blocking the communicating pipe.
- 7. the polymer power battery preparation method as described in claim any one of 1-3, it is characterised in that the positive pole dispensing Including positive major ingredient, positive electrode binder and positive conductive agent, the positive major ingredient is cobalt acid lithium or ternary or LiFePO4 or LiMn2O4； The positive electrode binder is Kynoar；The positive conductive agent includes one kind in CNT, conductive black, graphene It is or a variety of.
- 8. the polymer power battery preparation method as described in claim any one of 1-3, it is characterised in that the cathode blending Including bearing major ingredient, negative electrode binder and cathode conductive agent, the negative major ingredient is the modifier of graphite or graphite；The negative pole bonds Agent is oiliness binding agent or aqueous binders；The cathode conductive agent includes one kind in CNT, conductive black, graphene It is or a variety of.
- 9. a kind of polymer power battery, it is characterised in that the polymer power battery is as described in claim any one of 1-8 Polymer power battery preparation method be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017348.2A CN105428728B (en) | 2015-12-29 | 2015-12-29 | Polymer power battery and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017348.2A CN105428728B (en) | 2015-12-29 | 2015-12-29 | Polymer power battery and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105428728A CN105428728A (en) | 2016-03-23 |
| CN105428728B true CN105428728B (en) | 2018-01-30 |
Family
ID=55506764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511017348.2A Active CN105428728B (en) | 2015-12-29 | 2015-12-29 | Polymer power battery and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105428728B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025186A (en) * | 2016-07-28 | 2016-10-12 | 广西卓能新能源科技有限公司 | Lithium-ion battery and preparation method thereof |
| CN109728239B (en) * | 2019-01-07 | 2022-07-12 | 惠州亿纬锂能股份有限公司 | Liquid injection method of battery and lithium ion battery prepared by same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281987A (en) * | 2008-05-22 | 2008-10-08 | 上海南都能源科技有限公司 | Ferrous phosphate lithium-based polyalcohol lithium battery and method for manufacturing the same |
| CN102117936A (en) * | 2009-12-30 | 2011-07-06 | 江苏富朗特新能源有限公司 | Method for forming flexibly packaged lithium ion battery |
| CN104409781A (en) * | 2014-11-19 | 2015-03-11 | 新余英泰能科技有限公司 | Method for manufacturing square power polymer lithium ion battery |
-
2015
- 2015-12-29 CN CN201511017348.2A patent/CN105428728B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281987A (en) * | 2008-05-22 | 2008-10-08 | 上海南都能源科技有限公司 | Ferrous phosphate lithium-based polyalcohol lithium battery and method for manufacturing the same |
| CN102117936A (en) * | 2009-12-30 | 2011-07-06 | 江苏富朗特新能源有限公司 | Method for forming flexibly packaged lithium ion battery |
| CN104409781A (en) * | 2014-11-19 | 2015-03-11 | 新余英泰能科技有限公司 | Method for manufacturing square power polymer lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105428728A (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104008893B (en) | The preparation method of lithium ion hybrid capacitors and lithium ion hybrid capacitors thereof | |
| CN109546205A (en) | Using the preparation method of the lithium ion battery of organo-mineral complexing gel polymer electrolyte | |
| CN102244303B (en) | Zinc-silver accumulator capable of work at low temperature | |
| CN105185986A (en) | High-capacity cylindrical 18650 lithium-ion battery and preparation method thereof | |
| CN103779600B (en) | A kind of lithium titanate battery and manufacture method | |
| CN107046131A (en) | A kind of LiFePO4 system lithium ion battery and preparation method | |
| CN104282935B (en) | A kind of lithium titanate battery and manufacture method | |
| CN101626097A (en) | High-liquid absorbing rate micro-nano structure polymer electrolyte membrane and preparation method thereof | |
| CN106229158B (en) | A kind of preparation method and composite negative plate, lithium-ion capacitor of composite negative plate | |
| CN103165899A (en) | Positive pole piece and preparation method thereof and battery | |
| CN106816626A (en) | Lithium ion battery with ion trap | |
| CN103682454B (en) | A kind of preparation method of lithium ion battery adopting lithium titanate anode | |
| CN204360933U (en) | Super lithium-ion capacitor | |
| CN102646813A (en) | Manufacturing method of lithium titanate lithium ion battery | |
| CN106449126B (en) | A kind of embedding lithium method using the 3rd electrode pair lithium-ion capacitor | |
| CN104143662B (en) | A kind of square box hat or lithium ion battery with aluminum shell chemical conversion new method | |
| CN109216647A (en) | Bipolar electrode piece, the bipolar battery containing the electrode slice and maintenance regeneration method | |
| CN104200999B (en) | A kind of lithium-ion energy storage device | |
| CN108400286A (en) | A kind of energy storage device preparation method based on high resiliency electrode | |
| CN104577191A (en) | Polymer lithium-ion battery and preparation method thereof | |
| CN108417921A (en) | A kind of preparation method and battery of high energy density cells | |
| CN105428728B (en) | Polymer power battery and preparation method | |
| CN109786841A (en) | A kind of preparation method of lithium ion electrochemical energy storage device | |
| CN109088059A (en) | A kind of lithium ion battery and preparation method thereof | |
| CN206480713U (en) | A kind of secondary cell and heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |