CN115513602A - Manufacturing process of power battery containing electrode with interface management layer structure - Google Patents
Manufacturing process of power battery containing electrode with interface management layer structure Download PDFInfo
- Publication number
- CN115513602A CN115513602A CN202211290286.2A CN202211290286A CN115513602A CN 115513602 A CN115513602 A CN 115513602A CN 202211290286 A CN202211290286 A CN 202211290286A CN 115513602 A CN115513602 A CN 115513602A
- Authority
- CN
- China
- Prior art keywords
- negative electrode
- management layer
- interface management
- positive
- film
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 229920000642 polymer Polymers 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims abstract description 25
- 238000013329 compounding Methods 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- 239000006256 anode slurry Substances 0.000 claims abstract description 7
- 239000006257 cathode slurry Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 60
- 238000003825 pressing Methods 0.000 claims description 22
- 239000006258 conductive agent Substances 0.000 claims description 21
- 229920001940 conductive polymer Polymers 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 13
- 239000007773 negative electrode material Substances 0.000 claims description 12
- 239000007774 positive electrode material Substances 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 7
- 239000006182 cathode active material Substances 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 6
- 239000004760 aramid Substances 0.000 claims description 4
- 229920003235 aromatic polyamide Polymers 0.000 claims description 4
- 239000011883 electrode binding agent Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 239000012528 membrane Substances 0.000 description 6
- 239000011149 active material Substances 0.000 description 5
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- 239000006230 acetylene black Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 239000002041 carbon nanotube Substances 0.000 description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 description 4
- 239000003273 ketjen black Substances 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 3
- 239000002134 carbon nanofiber Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 239000007784 solid electrolyte Substances 0.000 description 3
- 239000006183 anode active material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 2
- 239000002931 mesocarbon microbead Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920005569 poly(vinylidene fluoride-co-hexafluoropropylene) Polymers 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910020717 Li0.33La0.56TiO3 Inorganic materials 0.000 description 1
- 101001001642 Xenopus laevis Serine/threonine-protein kinase pim-3 Proteins 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000011884 anode binding agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 239000003013 cathode binding agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- -1 fluorine ions Chemical class 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920006112 polar polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
- H01M50/457—Separators, membranes or diaphragms characterised by the material having a layered structure comprising three or more layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/46—Separators, membranes or diaphragms characterised by their combination with 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
Abstract
The application relates to a power battery manufacturing process containing an interface management layer structure electrode, which comprises the following steps: manufacturing a positive polymer interface management layer film; manufacturing a negative electrode polymer interface management layer film; coating one side of the cathode slurry on the anode polymer interface management layer film to prepare an anode film; coating one side of the anode slurry on a negative polymer interface management layer film to prepare a negative electrode film; thermally compounding the anode film, the anode fluid aluminum net and the other anode film into an anode unit; thermally compounding the negative electrode film, the negative electrode fluid copper net and the other negative electrode film into a negative electrode unit; a plurality of positive electrode units and negative electrode units are stacked together in a staggered and reverse manner to form a battery cell; the stacked and integrated battery core is encapsulated and thermally flat-pressed, so that the interfaces of the battery core are highly fused and solidified, the problem of separation of the interfaces of the battery core is not easily generated during charging and discharging of the battery, the technical condition of the battery core is provided for manufacturing large-size batteries, and the batteries manufactured by using the battery core have higher energy density and safer performance.
Description
[ technical field ] A method for producing a semiconductor device
The application relates to a power battery manufacturing process containing an interface management layer structure electrode, and belongs to the technical field of power batteries.
[ background of the invention ]
Among the power batteries, there are three types of conventional pouch batteries, square-case batteries, and cylindrical batteries. Wherein the soft package battery can be thinner and 5mm-12mm in thickness. Rather than conventional batteries such as blade batteries. The aluminum foil is packaged by a traditional aluminum shell, the length direction is about 1000mm, the width direction is about 120mm, the thickness is about 10mm, and the aluminum foil is long-strip-shaped and is in the form of a blade. Because the monomer specific energy of blade battery is high, the radiating effect is good, space utilization is high, therefore blade battery uses under the discharge mode of high specific energy, high multiplying power and has more and more markets.
However, in the prior art, the size of the blade battery is limited by the process of the battery cell, and the large-size battery cell is easy to bend in the production process by using the existing structure and production mode, so that the interface layer is damaged, and therefore, the blade battery cannot be made into any large size in the width direction. Other traditional batteries can only be made of A4 paper, the thickness is generally 9mm-15mm, and the requirements of the market on large-size power batteries cannot be met.
Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.
[ summary of the invention ]
The application aims to provide a power battery manufacturing process suitable for a large-size ultrathin square high-polymer power battery and containing an electrode with an interface management layer structure.
The purpose of the application is realized by the following technical scheme: a manufacturing process of a power battery containing an electrode with an interface management layer structure is suitable for preparing a battery core of a large-size ultrathin square high-polymer power battery, and comprises the following steps:
manufacturing a positive electrode polymer interface management layer film comprising a first nonpolar diaphragm and first positive electrode conductive polymer interface management layer films positioned on two sides of the first nonpolar diaphragm;
manufacturing a negative electrode polymer interface management layer film comprising a second nonpolar diaphragm and second negative electrode conductive polymer interface management layer films positioned on two sides of the second nonpolar diaphragm;
coating one side of cathode slurry prepared from a cathode active material, a cathode adhesive and a cathode conductive agent on the cathode polymer interface management layer film to prepare a cathode film;
coating one side of anode slurry prepared from a negative electrode active material, a negative electrode adhesive and a negative electrode conductive agent on the negative electrode polymer interface management layer film to prepare a negative electrode film;
thermally compounding and pressing one side of the positive electrode film coated with the positive active material, a positive fluid aluminum net and one side of the other positive electrode film coated with the positive active material into a positive unit roll, and then cutting a tab to prepare a positive unit;
thermally compounding and pressing one side of the negative electrode film with the negative electrode active material, a negative electrode fluid copper net and one side of the other negative electrode film with the negative electrode active material into a negative electrode unit roll, and then cutting a tab to prepare a negative electrode unit;
the battery cell is formed by stacking a plurality of positive electrode units and negative electrode units in a staggered and reverse manner through a manipulator of a laminating machine to grab the battery cell;
and encapsulating and hot flat pressing the stacked and integrated battery cell.
Further, the material of the first nonpolar membrane and the second nonpolar membrane is at least one of PE, PP, PET, PEO, PAN, PA, PI and aramid.
Further, the positive electrode unit roll sequentially passes through a first heating zone, a second heating zone and a third heating zone in the thermal compounding and pressing process;
the temperature of the first heating zone is 60-90 ℃, the temperature of the second heating zone is 90-110 ℃, and the temperature of the third heating zone is 110-120 ℃.
Further, the composition ratio of the positive electrode active material, the positive electrode conductive agent, and the positive electrode binder in the positive electrode film is 94:4:2.
further, the thickness of the anode fluid aluminum net is 0.01-0.015 mm.
Further, the negative electrode unit roll sequentially passes through a fourth heating area, a fifth heating area and a sixth heating area in the thermal compounding and pressing process;
the temperature of the fourth heating area is 90-110 ℃, the temperature of the fifth heating area is 110-125 ℃, and the temperature of the sixth heating area is 125-130 ℃.
Further, the composition ratio of the negative electrode active material, the negative electrode conductive agent, and the negative electrode binder in the negative electrode film is 95:3:2.
furthermore, the thickness of the negative electrode fluid copper mesh is 0.06 mm-0.015 mm.
Further, two positive pressure rollers are arranged on the third heating area, a first gap for the positive unit coil to pass through is formed between the two positive pressure rollers, and the temperature of the positive pressure rollers is 110-120 ℃;
and two negative pressure rollers are arranged on the sixth heating area, a second gap for the negative unit to pass through is formed between the two negative pressure rollers, and the temperature of the negative pressure rollers is 125-130 ℃.
Further, the battery cell sequentially passes through a seventh heating zone, an eighth heating zone and a ninth heating zone when being subjected to the hot flat pressing;
the temperature of the seventh heating zone is 80-100 ℃, the temperature of the eighth heating zone is 100-120 ℃, and the temperature of the ninth heating zone is 120-140 ℃.
Compared with the prior art, the method has the following beneficial effects: this application produces the polymer polymerization bonding reaction through producing between anodal polymer interface management rete and the negative pole polymer interface management rete and makes whole electric core thermosetting form one and level the platelike and have the whole of mechanical strength and rigidity, and the interfacial layer stable performance of whole electric core. The interface is not easy to fall off when the interfaces of the battery are highly fused and solidified, and the problem of separation of the interfaces of the battery is not easy to occur when the battery is charged and discharged, so that the technical condition of the battery is provided for manufacturing large-size batteries, and the batteries manufactured by using the battery are higher in energy density and safer in performance.
[ description of the drawings ]
FIG. 1 is a schematic flow chart of a process for manufacturing a power battery with an electrode having an interface management layer structure in an embodiment.
Fig. 2 is a schematic structural diagram of a battery cell in the embodiment shown in fig. 1.
Description of reference numerals:
1-positive electrode unit, 11-positive electrode polymer interface management layer film, 111-first positive electrode conductive polymer interface management layer film, 112-first nonpolar diaphragm, 113-positive electrode active material;
2-negative electrode unit, 21-negative electrode polymer interface management layer film, 211-second nonpolar diaphragm, 212-second negative electrode conductive polymer interface management layer film, 213-negative electrode active material.
[ detailed description ] embodiments
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 to fig. 2, an embodiment of the present application discloses a manufacturing process of a power battery including an electrode with an interface management layer structure, which is suitable for preparing a battery cell of a large-sized ultra-thin square-shaped polymer power battery, and includes:
s1: manufacturing a positive electrode polymer interface management layer film 11 comprising a first non-polar separator 112 and first positive electrode conductive polymer interface management layer films 111 positioned on two sides of the first non-polar separator 112:
specifically, a first nonpolar membrane 112 is prepared, where the first nonpolar membrane 1125 is made of at least one component of PE, PP, PET, PEO, PAN, PA, PI, and aramid, and in this embodiment, the first nonpolar membrane 112 is made of PE, the first positive conductive polymer slurry is coated on both sides of the first nonpolar membrane 112 to form a first positive conductive polymer interface management layer film 111, the first positive conductive polymer interface management layer film 111 is made of PVDF-HFP, a solid electrolyte, a third binder, a third conductive agent, and a nano oxide, and the third binder is PVDF, which is a polar polymer skeleton phase; PVDF-HFP is a polar amorphous phase conductive polymer group, and exists in a continuous state on the surface of the first nonpolar separator 112 and in the micropores of the binder. Solid electrolytes include, but are not limited to, boehmite, LLZO, PIM-1 intercalated with lithium fluoride, li0.33La0.56TiO3, and the like. The solid electrolyte exists in a continuous state on the surface of the first non-polar separator 112 and in the pores. Wherein, the third conductive agent includes but is not limited to any one of VFCF, SPUER-Li, S-O, KS-6, KS-15, SFG-6, SFG-15, 350G, acetylene Black (AB), ketjen Black (KB), vapor Grown Carbon Fiber (VGCF), and Carbon Nanotube (CNT), and the VFCF can have better compatibility with the active material and polar fluid by modifying or introducing other ions, such as introducing fluorine ions on the surface of the VGCF through chemical reaction. SPUER-Li may be replaced by, for example, ketjen black ECP, acetylene black, carbon nanotubes, ks-6, etc.; or, alternatively, more than two of the third conductive agents may be used.
In this embodiment, the thickness of the first non-polar separator 112 is 0.005mm, the coating thickness of the first positive electrode conductive polymer paste is 0.0015mm, and the thickness of the positive electrode polymer interface management layer film 11 is 0.008mm.
S2: manufacturing a negative electrode polymer interface management layer film 21 including a second nonpolar separator 211 and second negative electrode conductive polymer interface management layer films 212 located on both sides of the second nonpolar separator 211:
a second nonpolar separator 211 is prepared, the second nonpolar separator 211 is made of at least one component of PE, PP, PET, PEO, PAN, PA, PI, and aramid, and in this embodiment, the second nonpolar separator 21116 is made of PE.
And coating the second negative conductive polymer slurry on two sides of the second nonpolar separator 211 to form a second negative conductive polymer interface management layer film 212, where the second negative conductive polymer interface management layer film 212 is composed of a fourth binder, a fourth conductive agent, and a nano oxide. Wherein the fourth conductive agent includes but is not limited to any one of VFCF, SPUER-Li, conductive carbon black SP, ketjen black ECP, acetylene black, carbon nanotubes, SFG-6,
in this embodiment, the thickness of the second nonpolar separator 211 is 0.005mm, the coating thickness of the second positive electrode conductive polymer paste is 0.0015mm, and the thickness of the negative electrode polymer interface management layer film 21 is 0.008mm.
S3: coating one side of cathode slurry made of a positive electrode active material 113, a positive electrode adhesive and a positive electrode conductive agent on the positive electrode polymer interface management layer film 11 to prepare a positive electrode film:
specifically, a cathode slurry made of a cathode active material 113, a cathode binder, and a cathode conductive agent is applied to one surface of the cathode polymer interface management layer film 11 to form the cathode polymer interface management layer film 11 containing the cathode active material 113.
Wherein, the positive active material 113 is lithium iron phosphate LFP, the positive conductive agent is conductive carbon black, the positive adhesive is PVDF, and the ratio of the positive active material 113, the positive conductive agent and the positive adhesive is 94:4:2, preparing cathode slurry in NMP (N-methyl pyrrolidone), uniformly coating the cathode slurry on the positive polymer interface management layer film 11 by a roller coating mode, and drying in vacuum for 16h at 120 ℃ to prepare the positive electrode film.
S4: coating one side of anode slurry made of a negative electrode active material 213, a negative electrode adhesive and a negative electrode conductive agent on the negative electrode polymer interface management layer film 21 to prepare a negative electrode film;
an anode slurry made of the anode active material 213, an anode binder, and an anode conductive agent is coated on one side of the anode polymer interface management layer film 21 to form the anode polymer interface management layer film 21 containing the anode active material 213.
The cathode active material 213 is mesocarbon microbeads MCMB, the cathode conductive agent is conductive carbon black, the cathode adhesive is PVDF, and the cathode active material 213, the cathode conductive agent and the cathode adhesive are mixed by a mixing ratio of 95:3:2, preparing anode slurry in NMP (N-methyl pyrrolidone), uniformly coating the anode slurry on one side of a negative electrode polymer interface management layer film 21 by a single-side coating process in a roll coating mode, drying for 16 hours in vacuum at 120 ℃, and rolling to form a negative electrode film.
S5: and (2) thermally compounding and pressing one side of the positive electrode film coated with the positive electrode active material 113, a positive electrode fluid aluminum net and the other side of the positive electrode film coated with the positive electrode active material 113 into a positive electrode unit roll, and then cutting a tab to prepare a positive electrode unit 1:
specifically, the active material-containing surface of the positive electrode film containing the positive electrode polymer interface management layer film 11, the positive electrode fluid aluminum mesh, and the active material-containing surface of the other positive electrode film containing the positive electrode polymer interface management layer film 11 are thermally laminated on a thermal laminating machine to form a positive electrode unit roll, and then a tab is cut and cut into the positive electrode unit 1.
The positive electrode polymer interface management layer film 11, the positive electrode fluid aluminum mesh, and the other positive electrode polymer interface management layer film 11 are sequentially passed through a first heating zone, a second heating zone, and a third heating zone on a thermal compounding machine during thermal compounding, wherein in the present embodiment, the temperature of the first heating zone is 60 to 90 ℃, the temperature of the second heating zone is 90 to 110 ℃, and the temperature of the third heating zone is 110 to 120 ℃. And the third heating area is provided with two positive pressure rollers, a first gap for the positive unit 1 to pass through is formed between the two positive pressure rollers, and the temperature of the positive pressure rollers is 110-120 ℃ so as to roll and press the positive unit roll through the positive pressure rollers.
The purpose of adopting the mesh structure for the anode fluid aluminum net is that the anode films on the two sides of the anode fluid aluminum net can be better attached to the anode fluid aluminum net through gaps of the mesh structure, and the thermal compounding effect is ensured.
In the embodiment, the thickness of the anode fluid aluminum net is 0.01 mm-0.015 mm.
S6: and (3) thermally compounding and pressing one side of the negative electrode film with the negative electrode active material 213, a negative electrode fluid copper net and the other side of the negative electrode film with the negative electrode active material 213 into a negative electrode unit roll, and then cutting a tab to prepare a negative electrode unit 2:
the negative electrode unit roll is formed by thermally laminating the active material-bearing surface of the negative electrode film containing the negative electrode polymer interface management layer film 21, the negative electrode fluid copper mesh, and the active material-bearing surface of the negative electrode film containing the negative electrode polymer interface management layer film 21 in a thermal laminating machine, and then cutting the tab and the negative electrode unit 2.
The negative electrode polymer interface management layer film 21, the negative electrode fluid copper mesh and the other negative electrode polymer interface management layer film 21 sequentially pass through a fourth heating area, a fifth heating area and a sixth heating area on a thermal compound machine during thermal compounding, in the embodiment, the temperature of the fourth heating area is 90-110 ℃, the temperature of the fifth heating area is 110-125 ℃, the temperature of the sixth heating area is 125-130 ℃, a negative electrode pressing roller is arranged in the sixth heating area, two negative electrode pressing rollers are arranged, a second gap for the negative electrode unit roll to pass through is formed between the two negative electrode pressing rollers, and the temperature of the negative electrode pressing roller is 125-130 ℃ so as to roll and press the negative electrode unit roll through the negative electrode pressing rollers.
The purpose of adopting the mesh structure for the cathode fluid copper mesh is that the cathode films on the two sides of the cathode fluid aluminum mesh can be better attached to the cathode fluid copper mesh through the gaps of the mesh structure, so that the heat compounding effect is ensured.
In the embodiment, the thickness of the anode fluid copper net is 0.06 mm-0.015 mm.
S7: and grabbing the sheets by a mechanical arm of a laminating machine, and stacking a plurality of the positive electrode units 1 and the negative electrode units 2 in a staggered and reverse manner to form the battery cell.
S8: encapsulating the stacked and integrated battery cell, and performing hot flat pressing:
specifically, when the cell is subjected to hot flat pressing, the cell passes through the seventh heating zone, the eighth heating zone and the ninth heating zone in sequence. In this embodiment, the temperature of the seventh heating zone is 80-100 ℃, the temperature of the eighth heating zone is 100-120 ℃, and the temperature of the ninth heating zone is 120-140 ℃.
After hot flat pressing, the electric core is first activated, dried and then packed into an aluminum-plastic composite bag or a battery shell, and then secondary activation and sealing are carried out.
The above is only one specific embodiment of the present application, and any other modifications based on the concept of the present application are considered as the protection scope of the present application.
Claims (10)
1. A power battery manufacturing process containing an interface management layer structure electrode is suitable for preparing a battery core of a large-size ultrathin square high-polymer power battery, and is characterized by comprising the following steps of:
manufacturing a positive electrode polymer interface management layer film comprising a first nonpolar diaphragm and first positive electrode conductive polymer interface management layer films positioned on two sides of the first nonpolar diaphragm;
manufacturing a negative electrode polymer interface management layer film comprising a second nonpolar diaphragm and second negative electrode conductive polymer interface management layer films positioned on two sides of the second nonpolar diaphragm;
coating one side of cathode slurry prepared from a cathode active material, a cathode adhesive and a cathode conductive agent on the cathode polymer interface management layer film to prepare a cathode film;
coating one side of anode slurry prepared from a negative electrode active material, a negative electrode adhesive and a negative electrode conductive agent on the negative electrode polymer interface management layer film to prepare a negative electrode film;
thermally compounding and pressing one side of the positive electrode film coated with the positive active material, a positive fluid aluminum net and one side of the other positive electrode film coated with the positive active material into a positive unit roll, and then cutting a tab to prepare a positive unit;
thermally compounding and pressing one side of the negative electrode film with the negative electrode active material, a negative electrode fluid copper net and one side of the other negative electrode film with the negative electrode active material into a negative electrode unit roll, and then cutting a tab to prepare a negative electrode unit;
the battery cell is formed by stacking a plurality of positive electrode units and negative electrode units in a staggered and reverse manner through a manipulator of a laminating machine to grab the battery cell;
and encapsulating and hot flat pressing the stacked and integrated battery cell.
2. The manufacturing process of the power battery containing the electrode with the interface management layer structure as claimed in claim 1, wherein the material of the first nonpolar separator and the second nonpolar separator is at least one of PE, PP, PET, PEO, PAN, PA, PI, and aramid.
3. The manufacturing process of the power battery containing the electrode with the interface management layer structure is characterized in that the anode unit roll sequentially passes through a first heating zone, a second heating zone and a third heating zone in the thermal compounding and pressing process;
the temperature of the first heating zone is 60-90 ℃, the temperature of the second heating zone is 90-110 ℃, and the temperature of the third heating zone is 110-120 ℃.
4. The manufacturing process of the power battery containing the electrode with the interface management layer structure, according to claim 3, is characterized in that the component ratio of the positive electrode active material, the positive electrode conductive agent and the positive electrode binder in the positive electrode film is 94:4:2.
5. the process for manufacturing the power battery containing the electrode with the interface management layer structure as claimed in claim 4, wherein the thickness of the anode fluid aluminum net is 0.01 mm-0.015 mm.
6. The manufacturing process of the power battery containing the electrode with the interface management layer structure is characterized in that the negative electrode unit roll sequentially passes through a fourth heating zone, a fifth heating zone and a sixth heating zone in the thermal compounding and pressing process;
the temperature of the fourth heating area is 90-110 ℃, the temperature of the fifth heating area is 110-125 ℃, and the temperature of the sixth heating area is 125-130 ℃.
7. The manufacturing process of the power battery containing the electrode with the interface management layer structure, according to claim 6, is characterized in that the component ratio of the negative electrode active material, the negative electrode conductive agent and the negative electrode binder in the negative electrode film is 95:3:2.
8. the process for manufacturing the power battery containing the electrode with the interface management layer structure as claimed in claim 7, wherein the thickness of the negative electrode fluid copper mesh is 0.06 mm-0.015 mm.
9. The manufacturing process of the power battery containing the electrode with the interface management layer structure, according to claim 6, is characterized in that two positive pressure rollers are arranged on the third heating zone, a first gap for the positive unit roll to pass through is formed between the two positive pressure rollers, and the temperature of the positive pressure roller is 110-120 ℃;
and two negative pressure rollers are arranged on the sixth heating area, a second gap for the negative unit to pass through is formed between the two negative pressure rollers, and the temperature of the negative pressure rollers is 125-130 ℃.
10. The manufacturing process of the power battery containing the electrode with the interface management layer structure, according to claim 6, is characterized in that the battery cell sequentially passes through a seventh heating zone, an eighth heating zone and a ninth heating zone when the battery cell is subjected to the hot flat pressing;
the temperature of the seventh heating zone is 80-100 ℃, the temperature of the eighth heating zone is 100-120 ℃, and the temperature of the ninth heating zone is 120-140 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211290286.2A CN115513602B (en) | 2022-10-21 | 2022-10-21 | Manufacturing process of power battery containing interface management layer structure electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211290286.2A CN115513602B (en) | 2022-10-21 | 2022-10-21 | Manufacturing process of power battery containing interface management layer structure electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115513602A true CN115513602A (en) | 2022-12-23 |
| CN115513602B CN115513602B (en) | 2024-01-26 |
Family
ID=84509688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211290286.2A Active CN115513602B (en) | 2022-10-21 | 2022-10-21 | Manufacturing process of power battery containing interface management layer structure electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115513602B (en) |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0521069A (en) * | 1991-07-12 | 1993-01-29 | Sanyo Electric Co Ltd | Nonaqueous electrolytic battery and electrode therefor |
| EP1261046A1 (en) * | 2001-05-25 | 2002-11-27 | Microbatterie GmbH | Method of manufacturing an electrode/separator assembly for galvanic elements |
| US20060105244A1 (en) * | 2002-06-08 | 2006-05-18 | Kejha Joseph B | Lithium based electrochemical devices having a ceramic separator glued therein by an ion conductive adhesive |
| CN101315993A (en) * | 2007-05-28 | 2008-12-03 | 东莞新能源电子科技有限公司 | Method for manufacturing stack type lithium ion battery |
| US20120058375A1 (en) * | 2010-09-03 | 2012-03-08 | Gs Yuasa International Ltd. | Battery |
| CN102460776A (en) * | 2009-05-26 | 2012-05-16 | 奥普图多特公司 | Batteries utilizing anode coatings directly on nanoporous separators |
| CN102544576A (en) * | 2012-02-21 | 2012-07-04 | 东莞新能源科技有限公司 | Lithium ion battery |
| JP2014137889A (en) * | 2013-01-16 | 2014-07-28 | Toyota Motor Corp | Lithium ion secondary battery and battery pack |
| CN104103791A (en) * | 2013-04-08 | 2014-10-15 | 中国科学院金属研究所 | Composite diaphragm for battery and preparation method thereof |
| CN104638213A (en) * | 2015-01-30 | 2015-05-20 | 湖南高远电池有限公司 | Ultrathin secondary battery and preparation method thereof |
| WO2016168715A1 (en) * | 2015-04-15 | 2016-10-20 | Optodot Corporation | Coated stacks for batteries and related manufacturing methods |
| CN106784990A (en) * | 2016-12-02 | 2017-05-31 | 国联汽车动力电池研究院有限责任公司 | A kind of long circulating nonaqueous electrolyte battery and preparation method thereof |
| CN107819153A (en) * | 2016-09-12 | 2018-03-20 | 中国科学院金属研究所 | A kind of new structure lithium ion battery and preparation method thereof |
| CN110323392A (en) * | 2018-03-30 | 2019-10-11 | 北京国能电池科技股份有限公司 | Rechargeable battery and preparation method thereof and electrical equipment |
| CN110323075A (en) * | 2018-03-30 | 2019-10-11 | 北京国能电池科技股份有限公司 | Diaphragm/electrode composite construction and preparation method thereof, purposes and supercapacitor |
| CN212136623U (en) * | 2020-04-09 | 2020-12-11 | 恒大新能源技术(深圳)有限公司 | Battery cell structure and lithium ion battery |
| CN114006050A (en) * | 2021-09-29 | 2022-02-01 | 林丰川 | Ultra-thin polymer lithium ion battery and preparation method thereof |
| CN114243219A (en) * | 2021-11-11 | 2022-03-25 | 成都市银隆新能源有限公司 | Multifunctional composite diaphragm and preparation method thereof |
| CN114284563A (en) * | 2021-12-02 | 2022-04-05 | 荣盛盟固利新能源科技股份有限公司 | High-safety semi-solid lithium ion battery and manufacturing method thereof |
| CN114530670A (en) * | 2022-01-17 | 2022-05-24 | 惠州锂威新能源科技有限公司 | Battery cell structure and secondary battery |
| CN114552130A (en) * | 2021-09-13 | 2022-05-27 | 万向一二三股份公司 | Pole piece structure for improving lithium ion battery thermal compounding process infiltration |
-
2022
- 2022-10-21 CN CN202211290286.2A patent/CN115513602B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0521069A (en) * | 1991-07-12 | 1993-01-29 | Sanyo Electric Co Ltd | Nonaqueous electrolytic battery and electrode therefor |
| EP1261046A1 (en) * | 2001-05-25 | 2002-11-27 | Microbatterie GmbH | Method of manufacturing an electrode/separator assembly for galvanic elements |
| US20060105244A1 (en) * | 2002-06-08 | 2006-05-18 | Kejha Joseph B | Lithium based electrochemical devices having a ceramic separator glued therein by an ion conductive adhesive |
| CN101315993A (en) * | 2007-05-28 | 2008-12-03 | 东莞新能源电子科技有限公司 | Method for manufacturing stack type lithium ion battery |
| CN102460776A (en) * | 2009-05-26 | 2012-05-16 | 奥普图多特公司 | Batteries utilizing anode coatings directly on nanoporous separators |
| US20120058375A1 (en) * | 2010-09-03 | 2012-03-08 | Gs Yuasa International Ltd. | Battery |
| CN102544576A (en) * | 2012-02-21 | 2012-07-04 | 东莞新能源科技有限公司 | Lithium ion battery |
| JP2014137889A (en) * | 2013-01-16 | 2014-07-28 | Toyota Motor Corp | Lithium ion secondary battery and battery pack |
| CN104103791A (en) * | 2013-04-08 | 2014-10-15 | 中国科学院金属研究所 | Composite diaphragm for battery and preparation method thereof |
| CN104638213A (en) * | 2015-01-30 | 2015-05-20 | 湖南高远电池有限公司 | Ultrathin secondary battery and preparation method thereof |
| WO2016168715A1 (en) * | 2015-04-15 | 2016-10-20 | Optodot Corporation | Coated stacks for batteries and related manufacturing methods |
| CN107819153A (en) * | 2016-09-12 | 2018-03-20 | 中国科学院金属研究所 | A kind of new structure lithium ion battery and preparation method thereof |
| CN106784990A (en) * | 2016-12-02 | 2017-05-31 | 国联汽车动力电池研究院有限责任公司 | A kind of long circulating nonaqueous electrolyte battery and preparation method thereof |
| CN110323392A (en) * | 2018-03-30 | 2019-10-11 | 北京国能电池科技股份有限公司 | Rechargeable battery and preparation method thereof and electrical equipment |
| CN110323075A (en) * | 2018-03-30 | 2019-10-11 | 北京国能电池科技股份有限公司 | Diaphragm/electrode composite construction and preparation method thereof, purposes and supercapacitor |
| CN212136623U (en) * | 2020-04-09 | 2020-12-11 | 恒大新能源技术(深圳)有限公司 | Battery cell structure and lithium ion battery |
| CN114552130A (en) * | 2021-09-13 | 2022-05-27 | 万向一二三股份公司 | Pole piece structure for improving lithium ion battery thermal compounding process infiltration |
| CN114006050A (en) * | 2021-09-29 | 2022-02-01 | 林丰川 | Ultra-thin polymer lithium ion battery and preparation method thereof |
| CN114243219A (en) * | 2021-11-11 | 2022-03-25 | 成都市银隆新能源有限公司 | Multifunctional composite diaphragm and preparation method thereof |
| CN114284563A (en) * | 2021-12-02 | 2022-04-05 | 荣盛盟固利新能源科技股份有限公司 | High-safety semi-solid lithium ion battery and manufacturing method thereof |
| CN114530670A (en) * | 2022-01-17 | 2022-05-24 | 惠州锂威新能源科技有限公司 | Battery cell structure and secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115513602B (en) | 2024-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5382130B2 (en) | Method for producing solid electrolyte battery | |
| CN106797046B (en) | Laminated battery and method for manufacturing the same | |
| US9634358B2 (en) | Method for producing all-solid-state battery, and all-solid-state battery | |
| US9312527B2 (en) | Separator having heat resistant insulation layers | |
| JP4665931B2 (en) | Anode and lithium ion secondary battery | |
| JP7069612B2 (en) | Manufacturing method of laminated electrode body, power storage element and laminated electrode body | |
| JP2009004181A (en) | Electrode for battery | |
| CN104170151A (en) | Method for manufacturing electrode assembly and electrochemical device comprising the electrode assembly made through the method | |
| JP5418088B2 (en) | Current collector for lithium ion secondary battery | |
| JP5601361B2 (en) | Battery electrode | |
| JP2010121029A (en) | Fiber-containing polymer film and method of manufacturing the same, and electrochemical device and method of manufacturing the same | |
| CN110931802A (en) | Preparation method and application of flexible light non-metal current collector and pole piece, lithium storage battery and preparation method thereof | |
| KR101586536B1 (en) | Manufacturing method of carbon fiber sheet current collector for all solid state rechargeable thin film lithium secondary battery, and all solid state rechargeable thin film lithium secondary battery comprising carbon fiber sheet current collector | |
| JP7209475B2 (en) | Battery manufacturing method | |
| JP2010199022A (en) | Method of manufacturing electrode for secondary battery, electrode for secondary battery, and secondary battery | |
| CN102013528A (en) | Improved lithium ion battery manufacture process | |
| JP2013182735A (en) | Method for manufacturing multilayered membrane electrode assembly and lithium ion secondary battery | |
| JP7302593B2 (en) | lithium polymer battery | |
| JP5704251B2 (en) | Assembled battery and method of manufacturing the assembled battery | |
| WO2019198495A1 (en) | Battery production method | |
| WO2019198454A1 (en) | Battery manufacturing method | |
| CN217103675U (en) | Adhesive tape and lithium battery | |
| CN115513602B (en) | Manufacturing process of power battery containing interface management layer structure electrode | |
| JP7087532B2 (en) | Negative negative for lithium ion secondary battery and lithium ion secondary battery | |
| CN114447262A (en) | Pole piece, coating device, battery cell, battery pack and manufacturing method of battery cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |