WO2024024979A1 - 電池の製造方法 - Google Patents
電池の製造方法 Download PDFInfo
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- WO2024024979A1 WO2024024979A1 PCT/JP2023/027877 JP2023027877W WO2024024979A1 WO 2024024979 A1 WO2024024979 A1 WO 2024024979A1 JP 2023027877 W JP2023027877 W JP 2023027877W WO 2024024979 A1 WO2024024979 A1 WO 2024024979A1
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- Prior art keywords
- electrode member
- separator
- layer
- fixing
- manufacturing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- 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
Definitions
- the present disclosure relates to a method for manufacturing a battery.
- a lithium ion battery has a multilayer structure including a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode. From the perspective of increasing the capacity of batteries, laminate batteries, which are manufactured by stacking multiple components, are attracting attention.
- Patent Document 1 discloses a method for manufacturing a battery stack.
- a positive electrode sheet, a separator, and a negative electrode sheet are stacked to provide a separator between the positive electrode sheet and the negative electrode sheet.
- the positive electrode sheet is manufactured by applying a positive electrode active material to both sides of a positive electrode current collector, and the positive electrode active material includes a component such as a positive electrode active material.
- the negative electrode sheet is manufactured by applying a negative electrode active material to both sides of a negative electrode current collector, and the negative electrode active material includes a component such as a negative electrode active material.
- Patent Document 1 International Publication No. 2015/162746
- the battery manufacturing method including forming active material-containing layers on both sides of a current collector, depending on the manufacturing conditions, the positive electrode, the separator And there is a possibility that the active material-containing layer collapses before or during stacking of the negative electrode.
- an active material-containing layer that is oriented in the direction of gravity without being supported by an object such as a current collector is likely to collapse.
- the active material-containing layer is more likely to collapse.
- a problem to be solved by an embodiment of the present disclosure is to provide a battery manufacturing method that prevents the active material-containing layer from collapsing during the battery manufacturing process.
- the present disclosure includes the following aspects. ⁇ 1> Preparing a first electrode member including a first current collector and a first layer including a first active material; a second current collector and a second layer including a second active material; preparing a second electrode member including; covering the first layer of the first electrode member with a separator; and fixing the separator covering the first layer of the first electrode member; turning the first electrode member and the separator while fixing the separator covering the first layer of the first electrode member to direct the separator toward the second electrode member; and directing the separator toward the second electrode member.
- the separator and the second electrode member are superimposed to form the first current collector, the first layer, the separator, the second layer, and the second current collector.
- fixing the separator includes fixing an outer edge portion of the separator outside the outer peripheral surface of the first layer of the first electrode member.
- fixing the separator includes fixing the outer edge of the separator at two or more fixing locations.
- the center of the first electrode member coincides with the center of the two or more fixing locations in plan view.
- ⁇ 5> The method for manufacturing a battery according to any one of ⁇ 1> to ⁇ 4>, wherein fixing the separator includes adsorbing an outer edge of the separator to a suction device.
- fixing the separator includes pressing an outer edge of the separator with a fixture.
- the distance L between the outer peripheral surface of the first layer of the first electrode member and the fixing tool and the thickness H of the first layer of the first electrode member are such that L>( The method for manufacturing a battery according to ⁇ 6>, which satisfies the relationship: H/10).
- the amount of deformation of the thickness of the first layer of the first electrode member is 50 minutes of the thickness of the first layer of the first electrode member immediately before fixing the separator.
- the temperature in the process from preparing each of the first electrode member and the second electrode member to overlapping the separator and the second electrode member is 20° C. or less, ⁇ 1> to The method for manufacturing a battery according to any one of ⁇ 8>.
- ⁇ 10> The thickness of the first layer of the first electrode member immediately before being stacked on the second electrode member versus the thickness of the first layer of the first electrode member after being stacked on the second electrode member.
- ⁇ 11> The method for manufacturing a battery according to any one of ⁇ 1> to ⁇ 10>, wherein the first electrode member is a positive electrode member and the second electrode member is a negative electrode member.
- ⁇ 12> The method for manufacturing a battery according to any one of ⁇ 1> to ⁇ 10>, wherein the first electrode member is a negative electrode member and the second electrode member is a positive electrode member.
- a battery manufacturing method that prevents collapse of an active material-containing layer during the battery manufacturing process.
- FIG. 1 is a schematic diagram of a method for manufacturing a battery according to an embodiment.
- FIG. 2 is a schematic diagram of a separator fixed using a suction device in a battery manufacturing method according to an embodiment.
- FIG. 3 is a schematic diagram of a separator fixed using a fixture in a battery manufacturing method according to an embodiment.
- FIG. 4 is a schematic diagram of a turning step and a stacking step in a method of manufacturing a battery according to an embodiment.
- a numerical range expressed using " ⁇ " means a range that includes the numerical values written before and after " ⁇ " as the lower limit and upper limit.
- the upper limit stated in one numerical range may be replaced with the upper limit of another numerical range described step by step, and the upper limit described in a certain numerical range
- the lower limit value given may be replaced by a lower limit value of a numerical range in other stepwise descriptions.
- the upper limit or lower limit described in a certain numerical range may be replaced with the value shown in the Examples.
- step includes not only independent steps but also steps that cannot be clearly distinguished from other steps if the intended purpose is achieved.
- the amount of each component in the composition means the total amount of the substances corresponding to each component.
- mass % and weight % have the same meaning, and “mass parts” and “weight parts” have the same meaning.
- ordinal numbers for example, “first” and “second” are terms used to distinguish elements, and do not limit the number of elements or the superiority of the elements.
- a method for manufacturing a battery includes the following (1) to (6).
- (1) Preparing a first electrode member including a first current collector and a first layer containing a first active material (hereinafter sometimes referred to as "first preparation step”).
- (2) Preparing a second electrode member including a second current collector and a second layer containing a second active material (hereinafter sometimes referred to as “second preparation step”).
- (3) Covering the first layer of the first electrode member with a separator hereinafter sometimes referred to as "covering step”.
- Fixing step (4) Fixing the separator covering the first layer of the first electrode member (hereinafter sometimes referred to as “fixing step”). (5) Turning the first electrode member and the separator while fixing the separator covering the first layer of the first electrode member to direct the separator toward the second electrode member (hereinafter sometimes referred to as “turning step”). . (6) Overlap the separator facing the second electrode member and the second electrode member to form the first current collector, the first layer, the separator, the second layer, and the second current collector. , in this order (hereinafter sometimes referred to as a "stacking process").
- a battery manufacturing method that prevents the active material-containing layer from collapsing during the battery manufacturing process.
- the reason why the above method can prevent the active material-containing layer from collapsing is presumed as follows.
- the first layer including the first active material is covered with a separator, and the separator covering the first layer is turned while being fixed, and then the first layer is turned.
- a structure including a current collector, a first layer, a separator, a second layer, and a second current collector in this order is formed. Since the first layer is protected by the separator as described above, it is possible to prevent the first layer from collapsing due to manufacturing conditions such as position, thickness, and material.
- one embodiment of the present disclosure provides a battery manufacturing method that prevents collapse of an active material-containing layer during the battery manufacturing process.
- FIG. 1 is a schematic diagram of a method for manufacturing a battery according to an embodiment.
- the method for manufacturing a battery according to the present disclosure is not limited to the embodiment shown in FIG. 1.
- FIG. 1(a) shows the first preparation step and the second preparation step.
- each of the first electrode member 30 and the second electrode member 60 is prepared.
- the first electrode member 30 includes a first current collector 10 and a first layer 20 containing a first active material in this order.
- the second electrode member 60 includes a second current collector 40 and a second layer 50 containing a second active material in this order.
- FIG. 1(b) shows the covering step and fixing step.
- the first layer 20 of the first electrode member 30 is covered with a separator 70, and the separator 70 covering the first layer 20 of the first electrode member 30 is fixed. Fixing the separator 70 maintains the state of the separator 70 covering the first layer 20 of the first electrode member 30 and prevents the first layer 20 from collapsing.
- the outer edge of the separator 70 is fixed outside the outer peripheral surface of the first layer 20 of the first electrode member 30.
- Figure 1(c) shows the turning process.
- the separator 70 is replaced by the second electrode member 60. directed towards. Separator 70 faces second layer 50 of second electrode member 60 .
- the separator 70 remains in a state covering the first layer 20 of the first electrode member 30 without separating from the first electrode member 30, so that the first layer 20 is prevented from collapsing. For example, even if the first layer 20 is oriented in the direction of gravity during the turning process, the separator 70 prevents the first layer 20 from collapsing.
- Figure 1(d) shows the stacking process.
- FIG. 1D by overlapping the separator 70 facing the second electrode member 60 and the second electrode member 60, the first electrode member 30, the separator 70, and the second electrode member A structure including 60 and 60 in this order is formed.
- the first current collector 10 the first layer 20 containing the first active material, the separator 70, the second layer 50 containing the second active material, and the second current collector 40 are In turn, a structure is formed.
- the first preparation step is to prepare a first electrode member including a first current collector and a first layer containing a first active material.
- the first current collector may be selected from known current collectors used in battery manufacturing. Examples of the first current collector include a positive electrode current collector and a negative electrode current collector.
- the positive electrode current collector examples include aluminum, aluminum alloy, stainless steel, nickel, and titanium.
- the positive electrode current collector is preferably made of aluminum or an aluminum alloy.
- the structure of the positive electrode current collector may be a single layer structure or a multilayer structure. It is also preferred that the positive electrode current collector is aluminum or stainless steel with a coating layer. Preferably, the coating layer contains carbon, nickel, titanium, or silver.
- the negative electrode current collector examples include aluminum, copper, copper alloy, stainless steel, nickel, and titanium.
- the negative electrode current collector is preferably made of aluminum, copper, a copper alloy, or stainless steel, and more preferably copper or a copper alloy.
- the structure of the negative electrode current collector may be a single layer structure or a multilayer structure. It is also preferred that the negative electrode current collector is aluminum, copper, copper alloy or stainless steel with a coating layer. Preferably, the coating layer contains carbon, nickel, titanium, or silver.
- the first active material may be selected from known active materials used in battery manufacturing. Examples of the first active material include a positive electrode active material and a negative electrode active material.
- Examples of the positive electrode active material include lithium-containing compounds.
- Examples of lithium-containing compounds include lithium-containing metal oxides.
- Examples of lithium-containing metal oxides include lithium-containing transition metal oxides.
- Examples of lithium-containing metal oxides include lithium-containing transition metal phosphates. Examples of transition metals include Co, Ni, Fe, Mn, Cu, and V.
- Examples of the positive electrode active material include a compound represented by LiMO2 .
- M includes at least a transition element belonging to the fourth period. M may include non-transition elements (eg, Al, Ca, Mg, and Zr).
- Examples of LiMO2 include LiCoO2 , Mg-doped LiCoO2 , LiNiO2 , Li(Ni,Co,Al) O2 (known as "NCA”) and Li(Ni,Mn,Co)O. 2 (known as “NMC”).
- Examples of the positive electrode active material include LiMn 2 O 4 .
- Examples of the positive electrode active material include a compound represented by LiMPO4 .
- M includes at least one selected from the group consisting of Mn, Fe, Co, and Ni.
- Examples of the positive electrode active material include a compound represented by (Li 1-x Z x )MPO 4 .
- M includes at least one selected from the group consisting of V, Cr, Mn, Fe, Co, and Ni.
- Z includes at least one selected from the group consisting of Ti, Zr, Nb, Al, and Mg.
- x is 0.005 to 0.05.
- positive electrode active materials include partially fluorinated compounds such as LiVPO 4 F.
- Examples of the positive electrode active material include fluorocarbon.
- Examples of the positive electrode active material include metal fluoride compounds.
- Examples of the metal fluoride compound include a metal fluoride compound represented by MF2 and a metal fluoride compound represented by MF3 .
- M includes Fe, Bi, Ni, Co, Ti or V.
- Examples of the positive electrode active material include vanadium oxide.
- negative electrode active materials include lithium metal, carbon, lithium interlayer carbon, lithium nitride, lithium alloy, silicon, bismuth, boron, gallium, indium, zinc, tin, tin oxide, antimony, aluminum, titanium oxide, molybdenum, and germanium. , manganese, niobium, vanadium, tantalum, gold, platinum, iron, copper, chromium, nickel, cobalt, zirconium, yttrium, molybdenum oxide, germanium oxide, silicon oxide and silicon carbide.
- the first layer may further contain other components.
- the first layer may include a carbonaceous material.
- the carbonaceous material include graphite, carbon powder, pyrolytic carbon, carbon black, carbon fiber, carbon microfiber, carbon nanotube, fullerene, and graphene sheet. Carbonaceous materials may be used as electrically conductive materials.
- the first layer may include an electrolyte. Examples of the electrolyte include lithium salt compounds. Examples of the lithium salt compound include lithium hexafluorophosphate (LiPF 6 ).
- the first layer may contain a solvent. Examples of the solvent include organic solvents. Examples of the solvent include carbonate compounds. Examples of the carbonate compound include chain carbonate compounds and cyclic carbonate compounds. Examples of chain carbonate compounds include ethylmethyl carbonate, dimethyl carbonate, and diethyl carbonate. Examples of the cyclic carbonate compound include ethylene carbonate and propylene carbonate.
- Examples of the first electrode member include a positive electrode member and a negative electrode member.
- the type of the first electrode member may be determined in consideration of the type of the second electrode member.
- the first electrode member may be a positive electrode member, and the second electrode member may be a negative electrode member.
- the first electrode member may be a negative electrode member, and the second electrode member may be a positive electrode member.
- a method for manufacturing a first electrode member includes forming a first layer containing a first active material on a first current collector.
- the first layer containing the first active material is formed by supplying a first composition containing the first active material onto the first current collector.
- the first composition is manufactured by mixing the first active material and optionally other components.
- the raw materials of the first composition may be mixed using a mixing device.
- the mixing device may be selected from known mixing devices. Examples of mixing devices include ball mills, bead mills, planetary mixers, blade mixers, roll mills, kneaders, and disc mills.
- the first composition may be supplied using a supply device.
- the feeding device may be selected from known feeding devices. Examples of the feeding device include a screw feeder, a disk feeder, a rotary feeder, and a belt feeder.
- the second preparation step is to prepare a second electrode member including a second current collector and a second layer containing a second active material.
- the second preparation step may be performed before the first preparation step.
- the second preparation step may be performed after the first preparation step.
- the second preparation step may be performed simultaneously with the first preparation step.
- the second current collector may be selected from known current collectors used in battery manufacturing. Examples of the second current collector include the current collectors described in the above "first preparation step” section.
- the second active material may be selected from known active materials used in battery manufacturing. Examples of the second active material include the active materials described in the "first preparation step" section above.
- the second layer may further contain other components.
- Other components include, for example, the other components described in the "first preparation step" section above.
- Examples of the second electrode member include a positive electrode member and a negative electrode member.
- the type of the second electrode member may be determined in consideration of the type of the first electrode member.
- the first electrode member may be a positive electrode member, and the second electrode member may be a negative electrode member.
- the first electrode member may be a negative electrode member, and the second electrode member may be a positive electrode member.
- the method of manufacturing the second electrode member is not limited as long as the desired second electrode member can be obtained.
- the second electrode member is manufactured by a method similar to the method for manufacturing the first electrode member described above.
- the covering step is to cover the first layer of the first electrode member with a separator.
- the separator may be selected from known separators used in battery manufacturing. Examples of the separator include solid or gel ion conductors. Examples of the separator include microporous membranes and nonwoven fabrics. Examples of microporous membranes include microporous polyolefin membranes. Examples of polyolefins include polyethylene and polypropylene. The microporous membrane may be a microporous membrane containing a liquid electrolyte.
- the structure of the separator may be a single layer structure or a multilayer structure. The separator may include a polyethylene layer, a polypropylene layer, and a polyethylene layer in this order. The separator may include a microporous polyolefin membrane and a nonwoven fabric in this order.
- the covering step may include covering the first current collector of the first electrode member in addition to the first layer of the first electrode member.
- the covering step may include covering the first electrode member.
- the fixing step is to fix the separator covering the first layer of the first electrode member.
- fixing the separator covering the first layer of the first electrode member means maintaining the state of the separator covering the first layer of the first electrode member.
- fixing the separator includes permanently fixing the separator and temporarily fixing the separator.
- the fixing location may be determined in consideration of the dimensions of the first current collector, the material of the first layer, the dimensions of the first layer, and the dimensions of the separator.
- the fixing step includes fixing the outer edge of the separator outside the outer peripheral surface of the first layer of the first electrode member.
- the fixing step includes fixing the outer edge of the separator outside the outer peripheral surface of the first electrode member. The method described above can minimize the force applied to the ends of the first layer, thereby preventing or reducing collapse and deformation of the first layer.
- the number of fixing locations may be determined in consideration of the dimensions of the first current collector, the material of the first layer, the dimensions of the first layer, and the dimensions of the separator.
- the fixing step includes fixing the separator at two or more fixing locations.
- the fixing step includes fixing the outer edge of the separator at two or more fixing locations. The method described above can improve fixation of the separator and prevent or reduce collapse of the first layer. It is preferable that the number of fixing locations is four or more.
- the distance between the center of the first electrode member and the center of the two or more fixing locations is preferably adjusted to the following range in plan view.
- the length of the first electrode member in the short direction of the first electrode member is D
- the distance between the center of the first electrode member and the centers of two or more fixing locations is 0 mm in plan view.
- ⁇ D/3mm is preferable
- 0mm ⁇ D/5mm is more preferable.
- the center of the first electrode member coincides with the centers of two or more fixing locations.
- the distance between the center of the first electrode member and the centers of the two or more fixing locations is preferably 0 mm in plan view.
- the method described above can prevent or reduce collapse and deformation of the first layer.
- the center of two or more fixed locations means one point that is equidistant from all of the two or more fixed locations.
- the method of fixing the separator is not limited.
- the separator may be fixed by mechanical, physical or chemical methods.
- the separator may be fixed using a suction device.
- an adsorption device can fix the separator by adsorption.
- the separator may be fixed using a fixture.
- the fixture can secure the separator by pressing down on the separator.
- the fixture can fix the separator by pinching the separator.
- the separator may be fixed using a heat sealer.
- a heat sealer can fix the separator by thermocompression bonding.
- the fixing step includes adsorbing the separator to an adsorption device. Furthermore, it is preferable that the fixing step includes adsorbing the outer edge of the separator to an adsorption device.
- the suction device faces the first current collector of the first electrode member.
- the adsorption device faces the first current collector of the first electrode member, the adsorption device, the first electrode member, and the separator are located in this order.
- the position of the adsorption device as described above improves the fixation of the separator.
- the suction device is a vacuum suction device.
- a vacuum suction device is a device that generates negative pressure to suction an object.
- the suction device may have a function of supporting the electrode member.
- the adsorption device may have a function of transporting the electrode member.
- the adsorption device may have a temperature regulating function.
- FIG. 2 is a schematic diagram of a separator fixed using a suction device in a battery manufacturing method according to an embodiment.
- the method using the adsorption device is not limited to the embodiment shown in FIG.
- the suction device 80 suctions the outer edge of the separator 70 outside the outer peripheral surface of the first electrode member 30.
- the fixed location is the contact point between the separator 70 and the adsorption device 80.
- the adsorption device 80 also adsorbs the first electrode member 30 including the first current collector 10 and the first layer 20.
- the fixing step includes holding the separator with a fixture. Furthermore, it is preferable that the fixing step includes pressing the outer edge of the separator with a fixing tool.
- Holding down the separator with the fixture may include sandwiching the separator (preferably the outer edge of the separator) and the first electrode member (preferably the first current collector).
- Holding down the separator with the fixture may include sandwiching the separator (preferably the outer edge of the separator) and a support that supports the first electrode member.
- Holding down the separator with the fixture includes sandwiching the separator (preferably the outer edge of the separator), the first electrode member (preferably the first current collector), and a support that supports the first electrode member. You can stay there.
- fixtures include electric grippers and air grippers.
- the support may have a function of transporting the electrode member.
- the support may have a temperature regulating function.
- Examples of the support include cylindrical articles such as rollers.
- Examples of the support include belt-shaped articles such as belts.
- Examples of the support include plate-shaped articles such as plates.
- the fixture does not contact the outer peripheral surface of the first layer of the first electrode member.
- the fixture is preferably separated from the outer peripheral surface of the first layer of the first electrode member.
- the distance L between the outer peripheral surface of the first layer of the first electrode member and the fixture and the thickness H of the first layer of the first electrode member satisfy the relationship L>(H/10). It is preferable. L and H may satisfy the relationship L>(H/5). L and H may satisfy the relationship L>H.
- the above method can prevent or reduce collapse and deformation of the first layer of the first electrode member.
- the distance between the outer peripheral surface of the first layer and the fixture means the shortest distance between the outer peripheral surface of the first layer and the surface of the fixture.
- the distance L between the outer circumferential surface of the first layer and the fixtures is expressed by the arithmetic mean of the shortest distances described above measured for each fixture.
- the "thickness of the first layer” is represented by the arithmetic mean of the thicknesses measured at nine locations.
- FIG. 3 is a schematic diagram of a separator fixed using a fixture in a battery manufacturing method according to an embodiment.
- the method of using the fixture is not limited to the embodiment shown in FIG. 3.
- the fixture 90 presses the outer edge of the separator 70 on the outer side of the outer peripheral surface of the first layer 20 of the first electrode member 30 .
- L indicates the distance between the outer peripheral surface of the first layer 20 of the first electrode member 30 and the fixture 90.
- H indicates the thickness of the first layer 20 of the first electrode member 30.
- the amount of deformation in the thickness of the first layer of the first electrode member is preferably small.
- the amount of deformation in the thickness of the first layer of the first electrode member is preferably 1/40 or less of the thickness of the first layer of the first electrode member immediately before fixing the separator.
- the amount of deformation in the thickness of the first layer of the first electrode member is preferably 1/50 or less of the thickness of the first layer of the first electrode member immediately before fixing the separator.
- the above method can prevent deterioration of battery performance and short circuit.
- the amount of deformation of the thickness of the first layer of the first electrode member in the fixing step is calculated by the following formula. Note that "
- " indicates an absolute value. Formula: Deformation amount
- the turning step is to turn the first electrode member and the separator while keeping the separator covering the first layer of the first electrode member fixed so that the separator faces the second electrode member.
- the separator faces the second electrode member through the turning process.
- the turning step includes orienting the separator to the second layer of the second electrode member.
- the turning of the first electrode member and separator accompanied by fixation of the separator can prevent the active material-containing layer from collapsing. Furthermore, according to the turning step, even if the thickness of the active material-containing layer becomes large, or even if the active material-containing layer becomes brittle due to the influence of the material, the active material-containing layer is unlikely to collapse.
- turning the first electrode member and the separator means changing the position and direction of the first electrode member and the separator.
- the method of changing the position and direction of the first electrode member and the separator is not limited.
- the turning step may include rotating the first electrode member and the separator. That is, the separator may be directed toward the second electrode member by rotating the first electrode member and the separator.
- the turning step may include changing the conveyance direction of the first electrode member and the separator. That is, the separator may be directed toward the second electrode member by changing the transport direction of the first electrode member and the separator.
- the conveyance direction may be changed using a known conveyance device. Examples of devices that can change the conveyance direction include rollers and conveyors. For example, the roller can change the conveyance direction by conveying the first electrode member and the separator along the outer peripheral surface of the roller.
- the stacking step includes stacking the separator facing the second electrode member and the second electrode member to form the first current collector, the first layer, the separator, the second layer, and the second current collector. and, in this order, to form a structure.
- the method of overlapping the separator and the second electrode member is not limited.
- the separator may be close to the second electrode member.
- the second electrode member may be close to the separator.
- the separator and the second electrode member may be close to each other.
- the separator facing the second electrode member remains covering the first layer of the first electrode member
- the separator facing the second electrode member remains covering the first layer of the first electrode member.
- the fixation of the separators may be released after the stacking process.
- the fixation of the separators may be released simultaneously with the completion of the stacking process.
- fixation of the separator for the purpose of permanent fixation may not be released.
- the stacking step may include pressurizing the first electrode member, the separator, and the second electrode member when stacking the separator and the second electrode member.
- the above method can improve the adhesion between the components.
- the ratio of the thickness of the first layer of the first electrode member after being superimposed on the second electrode member to the thickness of the first layer of the first electrode member immediately before being superimposed on the second electrode member is: It is preferably from 0.8 to 1, more preferably from 0.9 to 1, even more preferably from 0.95 to 1. The closer the above ratio is to 1, that is, the smaller the amount of deformation of the thickness of the first layer of the first electrode member in the stacking process, the more the deterioration of battery performance and short circuit are prevented.
- the thickness of the first layer of the first electrode member immediately before being stacked on the second electrode member means the thickness of the first layer of the first electrode member immediately before the stacking step.
- thickness of the first layer of the first electrode member after being stacked on the second electrode member refers to the thickness of the first layer of the first electrode member at the time when the stacking process is completed. means.
- the ratio of the thickness of the second layer of the second electrode member immediately before being stacked on the separator to the thickness of the second layer of the second electrode member after being stacked on the separator is 0.8 to 1. It is preferably 0.9 to 1, more preferably 0.95 to 1. The closer the above ratio is to 1, that is, the smaller the amount of deformation of the thickness of the second layer of the second electrode member in the stacking process, the more the deterioration of battery performance and short circuit are prevented.
- "thickness of the second layer of the second electrode member immediately before being stacked on the separator” means the thickness of the second layer of the second electrode member immediately before the stacking step.
- the thickness of the second layer of the second electrode member after being stacked on the separator means the thickness of the second layer of the second electrode member at the time when the stacking process is completed.
- the "thickness of the second layer” is represented by the arithmetic mean of the thicknesses measured at nine locations.
- the stacking step may be performed simultaneously with the end of the turning step. That is, the structure may be formed by overlapping the separator and the second electrode member at the same time that the separator faces the second electrode member through the turning process.
- FIG. 4 is a schematic diagram of a turning step and a stacking step in a method of manufacturing a battery according to an embodiment.
- roller 100 turns first electrode member 30 and separator 70 to direct separator 70 toward second electrode member 60 .
- the separator 70 faces the second electrode member 60 by the turning process, the separator 70 is stacked on the second electrode member 60 .
- the first current collector 10 the first layer 20 containing the first active material, the separator 70, the second layer 50 containing the second active material, and the second current collector 40 are formed in this order.
- a structure containing is formed.
- the battery manufacturing method may further include other steps. Other steps may be selected from steps applied to known battery manufacturing methods.
- the temperature during the process from preparing each of the first electrode member and the second electrode member to overlapping the separator and the second electrode member is preferably 25°C or less, more preferably 20°C or less.
- the temperature is preferably 15°C or lower, and more preferably 15°C or lower.
- the temperature is preferably 10°C or lower, more preferably 5°C or lower.
- the above method can prevent or reduce volatilization of the components contained in the first layer of the first electrode member and the second layer of the second electrode member, and can prevent a decrease in battery capacity.
- the lower limit of the temperature specified in the above method may be 0°C, 5°C, 10°C or 15°C.
- the temperature defined in the above method may be room temperature. That is, the room temperature may be set within the above range.
- the room temperature can be controlled directly or indirectly by controlling the temperature of the first layer of the first electrode member and the temperature of the second layer of the second electrode member.
- the temperature defined in the above method may be the temperature of the support that supports the first electrode member.
- the temperature of the support supporting the first electrode member can directly or indirectly control the temperature of the first layer of the first electrode member.
- the temperature defined in the above method may be the temperature of the support that supports the second electrode member.
- the temperature of the support supporting the second electrode member can be directly or indirectly controlled by the second layer of the second electrode member.
- Examples of the support include the supports described in the "fixing step” section above.
- the support for supporting the first electrode member may be the adsorption device described in the above section of "fixing step".
- the process from preparing each of the first electrode member and the second electrode member to overlapping the separator and the second electrode member includes the first preparation step, the second preparation step, the covering step, the fixing step, and the turning step. process and stacking process.
- the temperature in at least one step may be set within the above range.
- the temperature in the first preparation step may be set within the above range.
- the temperature in the second preparation step may be set within the above range.
- the temperature in the coating step may be set within the above range.
- the temperature in the fixing step may be set within the above range.
- the temperature in the turning step may be set within the above range.
- the temperature in the stacking process may be set within the above range.
- the method for manufacturing a battery may include pressurizing the structure obtained by the stacking step.
- the above method can improve the adhesion between the components.
- the temperature in the process of pressurizing the structure may be set within a preferable temperature range in each of the steps described above.
- the battery manufacturing method of the present disclosure is applied to various battery manufacturing methods using a current collector, an active material, and a separator.
- Preferred applications of the battery manufactured by the battery manufacturing method of the present disclosure include, for example, lithium ion secondary batteries.
- a first composition was prepared according to the following procedure at room temperature of 25°C.
- Electrolyte solution did.
- a conductive additive (2 g of Ketjen Black) and a positive electrode active material (174 g of lithium iron phosphate) as the first active material are mixed using a mixing device (“Awatori Rentaro” manufactured by Thinky Co., Ltd.). The mixture was stirred at 1500 rpm (revolutions per minute) for 30 seconds to prepare a kneaded product Y (176 g).
- Add electrolytic solution I got it.
- the volume ratio of the solid component to the liquid component in the first composition was 48:52.
- a carbon-coated aluminum foil (thickness: 20 ⁇ m, Ra: 0.5 ⁇ m) was prepared as a first current collector (specifically, a positive electrode current collector).
- Ra represents the arithmetic mean roughness of the surface of the first current collector (specifically, the carbon layer covering the aluminum foil).
- the first current collector was placed on a cooling plate adjusted to 5°C.
- the first composition was supplied onto the first current collector cooled by the cooling plate to form a first electrode member including the first current collector and a first layer containing the first active material. Table 1 shows the dimensions of each component of the first electrode member.
- a second composition was prepared according to the following procedure at room temperature of 25°C.
- Electrolyte solution X was prepared according to the method described above.
- the conductive additive (carbon black) and the negative electrode active material (graphite) as the second active material were weighed at a mass ratio of 2.7:63.4 so that the total amount was 159 g.
- the conductive additive and the negative electrode active material were stirred at 900 rpm for 18 seconds using a mixing device ("Awatori Rentaro" manufactured by Thinky Co., Ltd.) to prepare a kneaded material Z (159 g).
- Add electrolytic solution I got it.
- the volume ratio of solid component to liquid component in the second composition was 52:48.
- a copper foil (thickness: 10 ⁇ m, Ra: 0.55 ⁇ m) was prepared as a second current collector (specifically, a negative electrode current collector).
- Ra represents the arithmetic mean roughness of the surface of the second current collector.
- a second current collector was placed on a cooling plate adjusted to 5°C. The second composition was supplied onto the second current collector cooled by the cooling plate to form a second electrode member including the second current collector and a second layer containing the second active material. Table 1 shows the dimensions of each component of the second electrode member.
- each fixture is a motorized gripper.
- the four fixtures include two sets of two fixtures facing each other in the vertical direction of the first current collector, and each fixture extends along the outer edge of the separator along the horizontal direction of the first current collector. Fixed.
- the width of each fixture fixing the outer edge of the separator is 15 mm.
- the distance between two fixtures facing each other in the longitudinal direction of the first current collector is 212 mm.
- the distance from the center of one fixture to the center of the other fixture is 146 mm.
- the center of the first electrode member coincides with the centers of the four fixing locations.
- the obtained structure includes a first current collector, a first layer, a separator, a second layer, and a second current collector in this order.
- Examples 2-3> The presence or absence of collapse was evaluated by the same method as in Example 1, except that the dimensions of the electrode member were changed according to the description in Table 1. The evaluation results are shown in Table 1.
- Example 4 The presence or absence of collapse was evaluated using the same method as in Example 1, except that the separator was fixed by adsorbing the outer edge of the separator to a suction device instead of using a fixture. The evaluation results are shown in Table 1. Note that, in plan view, the suction device continuously suctions the outer edge of the separator outside the outer circumferential surface of the first layer along the lateral direction of the first current collector.
- the suction device is a vacuum suction device.
- Deformation rate ⁇ ([Thickness of the first layer before the stacking process] - [Thickness of the first layer after the stacking process])/[Thickness of the first layer before the stacking process] ⁇ x 100
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Abstract
Description
<1> 第1集電体と、第1活物質を含む第1層と、を含む第1電極部材を準備することと、第2集電体と、第2活物質を含む第2層と、を含む第2電極部材を準備することと、上記第1電極部材の上記第1層をセパレータで覆うことと、上記第1電極部材の上記第1層を覆う上記セパレータを固定することと、上記第1電極部材の上記第1層を覆う上記セパレータを固定したまま上記第1電極部材及び上記セパレータを転向させて上記セパレータを上記第2電極部材に向けることと、上記第2電極部材に向けられた上記セパレータと、上記第2電極部材とを重ね合わせて、上記第1集電体と、上記第1層と、上記セパレータと、上記第2層と、上記第2集電体と、をこの順に含む構造体を形成することと、を含む電池の製造方法。
<2> 上記セパレータの固定が、上記第1電極部材の上記第1層の外周面よりも外側で上記セパレータの外縁部を固定することを含む、<1>に記載の電池の製造方法。
<3> 上記セパレータの固定が、上記セパレータの外縁部を2つ以上の固定箇所で固定することを含む、<1>又は<2>に記載の電池の製造方法。
<4> 平面視において、上記第1電極部材の中心が、上記2つ以上の固定箇所の中心と一致する、<3>に記載の電池の製造方法。
<5> 上記セパレータの固定が、上記セパレータの外縁部を吸着装置に吸着させることを含む、<1>~<4>のいずれか1つに記載の電池の製造方法。
<6> 上記セパレータの固定が、上記セパレータの外縁部を固定具で押さえることを含む、<1>~<4>のいずれか1つに記載の電池の製造方法。
<7> 上記セパレータの固定において、上記第1電極部材の上記第1層の外周面と上記固定具との間隔L及び上記第1電極部材の上記第1層の厚さHが、L>(H/10)の関係を満たす、<6>に記載の電池の製造方法。
<8> 上記セパレータの固定において、上記第1電極部材の上記第1層の厚さの変形量が、上記セパレータを固定する直前の上記第1電極部材の上記第1層の厚さの50分の1以下である、<1>~<7>のいずれか1つに記載の電池の製造方法。
<9> 上記第1電極部材及び上記第2電極部材の各々を準備することから上記セパレータ及び上記第2電極部材を重ね合わせることまでの過程における温度が、20℃以下である、<1>~<8>のいずれか1つに記載の電池の製造方法。
<10> 上記第2電極部材の上に重ねられる直前の上記第1電極部材の上記第1層の厚さに対する上記第2電極部材の上に重ねられた後の上記第1電極部材の上記第1層の厚さの比が、0.9~1である、<1>~<9>のいずれか1つに記載の電池の製造方法。
<11> 上記第1電極部材が、正極部材であり、上記第2電極部材が、負極部材である、<1>~<10>のいずれか1つに記載の電池の製造方法。
<12> 上記第1電極部材が、負極部材であり、上記第2電極部材が、正極部材である、<1>~<10>のいずれか1つに記載の電池の製造方法。
以下、本開示に係る電池の製造方法について説明する。本開示の一実施形態において、電池の製造方法は以下の(1)~(6)を含む。
(1)第1集電体と、第1活物質を含む第1層と、を含む第1電極部材を準備すること(以下、「第1準備工程」という場合がある。)。
(2)第2集電体と、第2活物質を含む第2層と、を含む第2電極部材を準備すること(以下、「第2準備工程」という場合がある。)。
(3)第1電極部材の第1層をセパレータで覆うこと(以下、「被覆工程」という場合がある。)。
(4)第1電極部材の第1層を覆うセパレータを固定すること(以下、「固定工程」という場合がある。)。
(5)第1電極部材の第1層を覆うセパレータを固定したまま第1電極部材及びセパレータを転向させてセパレータを第2電極部材に向けること(以下、「転向工程」という場合がある。)。
(6)第2電極部材に向けられたセパレータと、第2電極部材とを重ね合わせて、第1集電体と、第1層と、セパレータと、第2層と、第2集電体と、をこの順に含む構造体を形成すること(以下、「積み重ね工程」という場合がある。)。
第1準備工程は、第1集電体と、第1活物質を含む第1層と、を含む第1電極部材を準備することである。
第2準備工程は、第2集電体と、第2活物質を含む第2層と、を含む第2電極部材を準備することである。
被覆工程は、第1電極部材の第1層をセパレータで覆うことである。
固定工程は、第1電極部材の第1層を覆うセパレータを固定することである。
式:変形量=|[セパレータを固定する直前の第1電極部材の第1層の厚さ]-[セパレータを固定した直後の第1電極部材の第1層の厚さ]|
転向工程は、第1電極部材の第1層を覆うセパレータを固定したまま第1電極部材及びセパレータを転向させてセパレータを第2電極部材に向けることである。セパレータは、転向工程によって第2電極部材に対向する。転向工程は、セパレータを第2電極部材の第2層に向けることを含むことが好ましい。
積み重ね工程は、第2電極部材に向けられたセパレータと、第2電極部材とを重ね合わせて、第1集電体と、第1層と、セパレータと、第2層と、第2集電体と、をこの順に含む構造体を形成することである。
電池の製造方法は、他の工程を更に含んでいてもよい。他の工程は、公知の電池の製造方法に適用される工程から選択されてもよい。
本開示の電池の製造方法は、集電体、活物質及びセパレータを用いる種々の電池の製造方法に適用される。本開示の電池の製造方法によって製造される電池の好ましい用途としては、例えば、リチウムイオン二次電池が挙げられる。
[第1準備工程]
25℃の室温で、以下の手順に従って第1組成物を調製した。
(1)炭酸エチレンと炭酸プロピレンと炭酸ジエチルとを含む混合物に、0.9mol/LのLiPF6溶液を混合し、さらに、ビニレンカーボネートを混合することによって、電解液X(115.7g)を調製した。
(2)導電助剤(ケッチェンブラック2g)と、第1活物質として正極活物質(リン酸鉄リチウム174g)とを、混合装置(株式会社シンキー製の「あわとり練太郎」)を用いて、1500rpm(revolutions per minute)で30秒撹拌し、混練物Y(176g)を調製した。
(3)混練物Y(176g)に電解液X(64g)を加え、混合装置(株式会社シンキー製の「あわとり練太郎」)を用いて、1500rpmで120秒撹拌して、第1組成物を得た。第1組成物における固体成分と液体成分との体積比率は、48:52であった。
25℃の室温で、以下の手順に従って第2組成物を調製した。
(1)既述の方法に従って電解液Xを調製した。
(2)導電助剤(カーボンブラック)と、第2活物質として負極活物質(黒鉛)とを、2.7:63.4の質量比率で総量が159gとなるように秤量した。導電助剤と負極活物質とを、混合装置(株式会社シンキー製の「あわとり練太郎」)を用いて、900rpmで18秒撹拌し、混練物Z(159g)を調製した。
(3)混練物Z(159g)に電解液X(64g)を加え、混合装置(株式会社シンキー製の「あわとり練太郎」)を用いて、900rpmで30秒撹拌して、第2組成物を得た。第2組成物における固体成分と液体成分との体積比率は、52:48であった。
25℃の室温で、第1電極部材の第1層をセパレータ(厚さ:20μm)で覆い、次に、第1層の外周面よりも外側で、4つの固定具を用いてセパレータの外縁部の4か所を固定した。各固定具は、電動グリッパーである。平面視において、4つの固定具は、第1集電体の縦方向において向かい合う2つの固定具を2組含み、各固定具は、第1集電体の横方向に沿ってセパレータの外縁部を固定している。セパレータの外縁部を固定している各固定具の幅は、15mmである。第1集電体の縦方向において向かい合う2つの固定具の間隔は、212mmである。第1集電体の横方向において隣り合う2つの固定具に関して、一方の固定具の中心から他方の固定具の中心までの距離は、146mmである。平面視において、第1電極部材の中心は、4つの固定箇所の中心と一致している。
25℃の室温で、セパレータの固定を維持したまま第1電極部材及びセパレータを180度反転させてセパレータを第2電極部材に向け、次に、セパレータと第2電極部材とを重ね合わせた。得られた構造体は、第1集電体と、第1層と、セパレータと、第2層と、第2集電体と、をこの順に含む。
転向工程及び積み重ね工程における活物質含有層の崩落の有無を目視で確認し、以下の基準に従って評価した。評価結果を表1に示す。
A:活物質含有層の崩落が起きなかった。
B:活物質含有層の崩落が起きた。
表1の記載に従って電極部材の寸法を変更したこと以外は、実施例1と同じ方法によって崩落の有無を評価した。評価結果を表1に示す。
固定具の代わりに、セパレータの外縁部を吸着装置に吸着させてセパレータを固定したこと以外は、実施例1と同じ方法によって崩落の有無を評価した。評価結果を表1に示す。なお、平面視において、吸着装置は、第1層の外周面よりも外側でセパレータの外縁部を、第1集電体の横方向に沿って連続的に吸着している。吸着装置は、真空吸着装置である。
セパレータを固定しなかったこと以外は、実施例1と同じ方法によって崩落の有無を評価した。評価結果を表1に示す。
出された。
式:変形量=|[セパレータを固定する直前の第1電極部材の第1層の厚さ]-[セパレータを固定した直後の第1電極部材の第1層の厚さ]|
式:変形率={([積み重ね工程前の第1層の厚さ]-[積み重ね工程後の第1層の厚さ])/[積み重ね工程前の第1層の厚さ]}×100
本明細書に記載された全ての文献、特許出願、及び技術規格は、個々の文献、特許出願、及び技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書中に参照により取り込まれる。
Claims (12)
- 第1集電体と、第1活物質を含む第1層と、を含む第1電極部材を準備することと、
第2集電体と、第2活物質を含む第2層と、を含む第2電極部材を準備することと、
前記第1電極部材の前記第1層をセパレータで覆うことと、
前記第1電極部材の前記第1層を覆う前記セパレータを固定することと、
前記第1電極部材の前記第1層を覆う前記セパレータを固定したまま前記第1電極部材及び前記セパレータを転向させて前記セパレータを前記第2電極部材に向けることと、
前記第2電極部材に向けられた前記セパレータと、前記第2電極部材とを重ね合わせて、前記第1集電体と、前記第1層と、前記セパレータと、前記第2層と、前記第2集電体と、をこの順に含む構造体を形成することと、
を含む電池の製造方法。 - 前記セパレータの固定が、前記第1電極部材の前記第1層の外周面よりも外側で前記セパレータの外縁部を固定することを含む、請求項1に記載の電池の製造方法。
- 前記セパレータの固定が、前記セパレータの外縁部を2つ以上の固定箇所で固定することを含む、請求項1又は請求項2に記載の電池の製造方法。
- 平面視において、前記第1電極部材の中心が、前記2つ以上の固定箇所の中心と一致する、請求項3に記載の電池の製造方法。
- 前記セパレータの固定が、前記セパレータの外縁部を吸着装置に吸着させることを含む、請求項1又は請求項2に記載の電池の製造方法。
- 前記セパレータの固定が、前記セパレータの外縁部を固定具で押さえることを含む、請求項1又は請求項2に記載の電池の製造方法。
- 前記セパレータの固定において、前記第1電極部材の前記第1層の外周面と前記固定具との間隔L及び前記第1電極部材の前記第1層の厚さHが、L>(H/10)の関係を満たす、請求項6に記載の電池の製造方法。
- 前記セパレータの固定において、前記第1電極部材の前記第1層の厚さの変形量が、前記セパレータを固定する直前の前記第1電極部材の前記第1層の厚さの50分の1以下である、請求項1又は請求項2に記載の電池の製造方法。
- 前記第1電極部材及び前記第2電極部材の各々を準備することから前記セパレータ及び前記第2電極部材を重ね合わせることまでの過程における温度が、20℃以下である、請求項1又は請求項2に記載の電池の製造方法。
- 前記第2電極部材の上に重ねられる直前の前記第1電極部材の前記第1層の厚さに対する前記第2電極部材の上に重ねられた後の前記第1電極部材の前記第1層の厚さの比が、0.9~1である、請求項1又は請求項2に記載の電池の製造方法。
- 前記第1電極部材が、正極部材であり、前記第2電極部材が、負極部材である、請求項1又は請求項2に記載の電池の製造方法。
- 前記第1電極部材が、負極部材であり、前記第2電極部材が、正極部材である、請求項1又は請求項2に記載の電池の製造方法。
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| EP23846709.6A EP4564496A4 (en) | 2022-07-28 | 2023-07-28 | Method for producing battery |
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|---|---|---|---|---|
| WO2015162746A1 (ja) | 2014-04-24 | 2015-10-29 | 日産自動車株式会社 | ロール状シート材の保持装置及び電池積層体の製造方法 |
| WO2017014233A1 (ja) * | 2015-07-22 | 2017-01-26 | 株式会社豊田自動織機 | リチウムイオン二次電池の電極組立体及びその製造方法 |
| JP2019216061A (ja) * | 2018-06-14 | 2019-12-19 | 三洋化成工業株式会社 | リチウムイオン電池用電極、及び、リチウムイオン電池 |
| JP2020061282A (ja) * | 2018-10-10 | 2020-04-16 | 三洋化成工業株式会社 | リチウムイオン電池及びその製造方法 |
| WO2020203113A1 (ja) * | 2019-03-29 | 2020-10-08 | パナソニック株式会社 | 積層電極体及び積層電極体の接着装置 |
| WO2021117908A1 (ja) * | 2019-12-12 | 2021-06-17 | Apb株式会社 | 電池システム |
| JP2022120966A (ja) | 2021-02-08 | 2022-08-19 | ブラザー工業株式会社 | 液体吐出装置、その制御方法及びプログラム |
-
2023
- 2023-07-28 EP EP23846709.6A patent/EP4564496A4/en active Pending
- 2023-07-28 CN CN202380056461.8A patent/CN119605005A/zh active Pending
- 2023-07-28 WO PCT/JP2023/027877 patent/WO2024024979A1/ja not_active Ceased
- 2023-07-28 JP JP2024537283A patent/JPWO2024024979A1/ja active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015162746A1 (ja) | 2014-04-24 | 2015-10-29 | 日産自動車株式会社 | ロール状シート材の保持装置及び電池積層体の製造方法 |
| WO2017014233A1 (ja) * | 2015-07-22 | 2017-01-26 | 株式会社豊田自動織機 | リチウムイオン二次電池の電極組立体及びその製造方法 |
| JP2019216061A (ja) * | 2018-06-14 | 2019-12-19 | 三洋化成工業株式会社 | リチウムイオン電池用電極、及び、リチウムイオン電池 |
| JP2020061282A (ja) * | 2018-10-10 | 2020-04-16 | 三洋化成工業株式会社 | リチウムイオン電池及びその製造方法 |
| WO2020203113A1 (ja) * | 2019-03-29 | 2020-10-08 | パナソニック株式会社 | 積層電極体及び積層電極体の接着装置 |
| WO2021117908A1 (ja) * | 2019-12-12 | 2021-06-17 | Apb株式会社 | 電池システム |
| JP2022120966A (ja) | 2021-02-08 | 2022-08-19 | ブラザー工業株式会社 | 液体吐出装置、その制御方法及びプログラム |
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Also Published As
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| EP4564496A1 (en) | 2025-06-04 |
| EP4564496A4 (en) | 2025-12-24 |
| US20250174730A1 (en) | 2025-05-29 |
| JPWO2024024979A1 (ja) | 2024-02-01 |
| CN119605005A (zh) | 2025-03-11 |
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