EP3894152A1 - Coupe de métaux mous par assistance ultrasonore - Google Patents
Coupe de métaux mous par assistance ultrasonoreInfo
- Publication number
- EP3894152A1 EP3894152A1 EP19897183.0A EP19897183A EP3894152A1 EP 3894152 A1 EP3894152 A1 EP 3894152A1 EP 19897183 A EP19897183 A EP 19897183A EP 3894152 A1 EP3894152 A1 EP 3894152A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- blade
- lithium
- storage device
- electrochemical storage
- 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.)
- Pending
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
- B23D15/04—Shearing machines or shearing devices cutting by blades which move parallel to themselves having only one moving blade
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D36/00—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut
- B23D36/0008—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
- B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
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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
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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
-
- 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
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
- H01M50/406—Moulding; Embossing; Cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D31/00—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
- B26D2001/002—Materials or surface treatments therefor, e.g. composite materials
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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
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
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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
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0082—Organic polymers
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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 invention relates to a method of cutting soft metals in general.
- the invention relates to a method using a system comprising a cutting blade driven by an ultrasonic vibration for cutting soft metals.
- the method according to the invention is implemented for cutting components used in the manufacture of electrochemical storage devices, for example lithium batteries. These components include anodes, cathodes, solid electrolytes, current collectors, and separators.
- Ultrasound is a mechanical and elastic wave, which propagates through fluid, solid, gaseous or liquid supports.
- the frequency range of ultrasound is between 16,000 and 10,000,000 Hertz. Such frequencies are too high to be perceived by the human ear.
- Ultrasound has several industrial applications. For example, they are used in non-destructive testing of parts. Ultrasound is also used in areas directly affecting living things, such as ultrasound, surgery (clearing of arteries, replacement of hip prostheses, liposuction, etc.). Other areas of use for ultrasound include mixing hardly miscible fluids, cleaning parts, removing dust, welding plastics and metals, machining [1]
- ultrasonic vibrations improve performance, either by reducing friction conditions or by creating the intense conditions required [1]
- Cutting is a mechanical operation of reducing dimensions which is done using a tool, often said to be sharp and which allows solid materials to be divided according to a precise geometry, in order to obtain pieces of reduced size. , or to separate different parts [2]
- Ultrasound has been used for a long time in very advanced technologies such as welding and medical imaging. Ultrasound technology has been applied to the cutting of food products, for example the cutting of pastries [3] This technology has developed considerably in this sector and today provides many solutions to the problems associated with the cutting of soft foods, sticky, fluffy, brittle, and / or heterogeneous [2]
- Ultrasound is not used as a cutting tool as such. They are used to improve the performance of a cutting tool, for example, a blade operated with a guillotine movement. Ultrasound is therefore applied to the blade. This can have a particular geometry.
- the ultrasonic assisted cutting technique makes it easy to cut difficult-to-cut materials.
- materials include carbon materials, rubber, thermoplastics, leather, fabrics, nonwovens, paper, plastic sheets, etc.
- cutting ductile materials such as soft metals, has always been considered to be more profitable by other techniques, such as standard cutting, EDM, electrochemistry [1]
- Cutting soft alkali metals such as lithium, sodium, potassium, etc. poses specific problems. We note for example the deformation of the parts to be cut, heating of the cutting tools, the buttering of the tools. In addition, a poor surface finish is often noted.
- the use of common tools such as saws, knives (cutter, guillotine, rotary blade, scissors etc.), sharp wires, heating wires, cutting lasers and other erosion techniques generally leads to results. unsatisfactory.
- assemblies are made which include these metals, such as lithium storage devices, the usual cutting techniques become impractical.
- the inventors have designed and implemented a process for cutting soft metals.
- the method according to the invention uses a system comprising a cutting blade animated by an ultrasonic vibration.
- the method is implemented for cutting components used in the manufacture of electrochemical storage devices, for example lithium batteries.
- Such components include anodes, cathodes, solid electrolytes, current collectors and separators. These components can be cut individually or when they are assembled, for example in the form of a multilayer assembly.
- the method is also implemented in a system for the manufacture and / or characterization of an electrochemical storage device.
- the method according to the invention allows the elimination of friction and therefore the reduction of cutting forces, the reduction of the short-circuit time of an assembled battery during cutting, the minimization of the buttering of the tool, reduced heating and wear of the tool used. Also, the method according to the invention makes it possible to obtain an improved cutting finish.
- the method uses a cutting tool animated by an ultrasonic vibration.
- the cutting tool comprises at least one blade coupled to an ultrasonic generator.
- the components of the electrochemical storage device can be cut individually, or during the manufacture of the device.
- the components of the electrochemical storage device can also be cut out when they are assembled, for example when it is desired to carry out an examination of the device in order to determine its architecture (characterization of the electrochemical storage device).
- the cutting tool can be coupled to a microscope and / or to a device which can be used to measure, for example the thickness of each layer of the various components of the electrochemical storage device.
- the invention relates to the following aspects:
- Method for cutting soft metals comprising the use of a cutting tool adapted to be animated by an ultrasonic vibration.
- the electrochemical storage device is a lithium accumulator, an “all solid” lithium accumulator, a lithium-ion accumulator, or a battery.
- the cutting blade is: a blade adapted to be actuated by a guillotine movement, a razor blade, a diamond blade, a blade 'exacto, a steel blade, a blade made of tungsten carbide, or a combination of these.
- the soft metals are metals having a high malleability at room temperature, preferably Pb, Na, Ca, Sr, K, Mg, Al, Sn, Au, Pt, Ba, Cu, Ag, Cd, In, Ga, Bi, Fe, Zn, Li, Ni, Pd, Cs, Rb and their alloys; or metals with a hardness lower than 4 on the Mohs scale.
- soft metals are soft alkali metals; preferably Li, Na, K, Mg, Ca or their alloys.
- Method for manufacturing and / or characterizing an electrochemical storage device comprising at least one step of cutting at least one component of the device electrochemical storage, the cutting being carried out using a cutting tool adapted to be animated by an ultrasonic vibration.
- the electrochemical storage device is a lithium accumulator, an “all solid” lithium accumulator, a lithium-ion accumulator, or a battery.
- the negative electrode consists of a metal sheet based on alkali metals, preferably lithium, lithium-aluminum alloys or the like
- the positive electrode consists of a composite mixture, preferably a material containing an active redox center (transition metal oxide), an electrically conductive filling material (carbon particles), a solid electrolyte material (ionic conductor)
- the solid electrolyte consists of polymer, glass, ceramic or a mixture of these
- the current collector consists of a metal sheet, preferably a sheet of AI, Ni, Cu, or a combination of these; optionally, the current collector is an anode material, for example lithium; and the separator is made of polymer or ceramic material.
- the cutting blade is: a blade adapted to be actuated by a guillotine movement, a razor blade, a diamond blade, a blade 'exacto, a steel blade, a blade made of tungsten carbide, or a combination of these.
- the cutting tool is a microtome.
- the manufacturing comprises at least one of the following steps: stacking or assembling the components of the electrochemical storage device; a re-dimension of the components of the electrochemical storage device; an extrusion of a billet from the fusion of an ingot of material constituting a component of the electrochemical storage device, preferably a lithium billet; a re-dimension of a stack or half-stack; and a stack of bifacial batteries.
- the cutting tool comprises: a blade of high hardness; and / or a blade whose surface has been modified by heat treatment, preferably carburetion, nitriding, quenching, ceramic deposition or a combination of these; and / or a blade made of a wear-resistant material, preferably tungsten carbide, silicon carbide, diamond, alumina, zirconium, silicon nitride or a combination thereof; and / or a blade made of an electrical insulating material.
- (22) System for the characterization of an electrochemical storage device (lithium accumulator or “all solid” lithium accumulator or a lithium-ion accumulator or battery), comprising: a cutting tool adapted to be driven by a vibration ultrasound, preferably the tool is a microtome; and / or a microscope; and / or a measuring device.
- the cutting tool comprises at least one cutting blade coupled to an ultrasonic generator.
- Electrochemical storage device obtained by a method which comprises the method as defined according to any one of the aspects (1) to (21) above, or which uses the system as defined according to any one of the aspects (1) to (23).
- Lithium accumulator or “all solid” lithium accumulator or a lithium-ion accumulator or battery obtained by a process which comprises the process as defined according to any one of aspects (1) to (21), or which uses the system as defined in any one of aspects (1) to (23).
- FIG. 1 Structure of an "all solid” lithium battery according to the prior art [4]
- Figure 2 Section of metallic lithium according to a standard process, without ultrasonic assistance.
- Figure 3 Cut of metallic lithium with ultrasonic assistance.
- Figure 4 Device for cutting a round lithium rod.
- Figure 5 Result of the cut of the round lithium rod according to Figure 4, A) without ultrasonic assistance, B) with ultrasonic assistance.
- Figure 6 Longitudinal section of a lithium ingot with ultrasonic assistance.
- the term "ultrasound” designates a mechanical and elastic wave, which propagates through fluid, solid, gaseous or liquid supports.
- the frequency range of ultrasound is generally between 16,000 and 10,000,000 Hertz.
- soft metals refers to metals with high malleability / plasticity at room temperature.
- metals are for example Pb, Na, Ca, Sr, K, Mg, Al, Sn, Au, Pt, Ba, Cu, Ag, Cd, In, Ga, Bi, Fe, Zn, Li, Ni, Pd, Cs, Rb and their alloys.
- soft alkali metals refers to alkali metals with high malleability / plasticity at room temperature.
- Such metals are for example Li, Na, K, Mg, Ca, and their alloys.
- all solid lithium battery designates a lithium battery in which the electrolyte is in solid form.
- electrochemical storage device designates an accumulator, a battery, a battery, a lithium accumulator, an “all solid” lithium accumulator, a lithium-ion accumulator or any other type of accumulator.
- cutting designates a mechanical operation making it possible to divide and / or separate a piece of solid material according to a determined geometry.
- the division and / or separation makes it possible to obtain pieces of reduced sizes and / or different geometric shapes.
- characterization designates a process by which the electrochemical storage device is examined in order to determine its architecture. We can for example measure the thickness of each layer of the different components of the stack. This examination process can be linked to a microscope and / or measuring device. This examination process incorporates the cutting method according to the invention, with a microtome (ultrasonic assistance microtomy) as cutting tool.
- microtome ultrasonic assistance microtomy
- the inventors have designed and implemented a process for cutting soft metals.
- the method according to the invention uses a system comprising a cutting blade animated by an ultrasonic vibration.
- the method is implemented for cutting components used in the manufacture of electrochemical storage devices, for example lithium batteries.
- Such components include anodes, cathodes, solid electrolytes, current collectors and separators. These components can be cut individually or when assembled, for example in the form of a multilayer assembly.
- the method is also implemented in a system for the manufacture and / or characterization of an electrochemical storage device.
- the method according to the invention allows the elimination of friction and therefore the reduction of cutting forces, the reduction of the short-circuit time of an assembled battery during cutting, the minimization of the buttering of the tool, reduced heating and wear of the tool used. Also, the method according to the invention makes it possible to obtain an improved cutting finish.
- the method uses a cutting tool animated by an ultrasonic vibration.
- the cutting tool comprises at least one blade coupled to an ultrasonic generator.
- the components of the electrochemical storage device can be cut individually, or during the manufacture of the device.
- the components of the electrochemical storage device can also be cut when they are assembled, for example when it is desired to carry out an examination of the device in order to determine its architecture (characterization of the electrochemical storage device).
- the cutting tool can be coupled to a microscope and / or to a device which can be used to measure, for example the thickness of each layer of the various components of the electrochemical storage device.
- the invention includes the application of ultrasonic assistance to the cutting of soft metals.
- the invention makes it possible to resolve the cutting problems of the components used in the manufacture of electrochemical storage devices, such as for example an "all solid" lithium accumulator, a lithium-ion accumulator, or a battery.
- Figure 1 reproduced from U. S. 6,030,421 [4] illustrates the structure of such an accumulator.
- the invention allows the cutting of an ingot used for the extrusion of a lithium strip.
- a lubricant such as a mineral cutting oil.
- the lubricant helps reduce heating of the workpiece and the cutting tool.
- Lubricant helps also eliminates surface oxidation from the tool and cut material and improves the cut finish.
- a cutting tool having a knife whose hardness is high and / or whose surface has been modified by various treatments (carburetion, nitriding, dipping, deposition ceramic, or a combination thereof). It may also be advantageous to use a cutting tool having a knife made of a wear-resistant material (tungsten carbide, silicon carbide, diamond, alumina, zirconium, silicon nitride or a combination of these ) and / or made of an electrical insulating material.
- a wear-resistant material tungsten carbide, silicon carbide, diamond, alumina, zirconium, silicon nitride or a combination of these
- the soft metals envisaged according to the invention are the metals having a high malleability (high plasticity) at room temperature.
- Such metals include Pb, Na, Ca, Sr, K, Mg, Al, Sn, Au, Pt, Ba, Cu, Ag, Cd, In, Ga, Bi, Fe, Zn, Li, Ni, Pd, Cs, Rb and their alloys.
- metals exhibiting malleability at higher temperatures can also be cut by the process according to the invention. In this case, the process is carried out by providing thermal protection to the cutting system by ultrasonic assistance.
- an “all solid” lithium accumulator is composed of several components.
- the negative electrode is generally made up of a light metal strip based on alkali metal: lithium metal, a lithium-aluminum alloy or any other similar.
- the negative electrode is generally composed of graphite as active material, deposited on a layer of current collector (generally made of Cu or Ni).
- the positive electrode generally consists of a composite mixture - material containing an active redox center (transition metal oxide), an electrically conductive filling material (usually carbon particles), a solid electrolyte material (ionic conductor); the composite material deposited on a current collector (generally a thin sheet of aluminum).
- the solid electrolyte generally consists of polymer, glass, ceramic or a mixture of these; and allows the conduction of lithium ions (Li + ).
- the “all solid” lithium battery is produced by the superposition of the positive electrode, the solid electrolyte and the negative electrode. The process is illustrated in Figure 1 of US 6,030,421 [4]
- the method is implemented in a system for the manufacture of an electrochemical storage device.
- the method according to the invention is also implemented in a system for the characterization of an electrochemical storage device.
- the system is suitable for use in the manufacture and characterization of an electrochemical storage device.
- the storage device can be a lithium accumulator, an “all solid” lithium accumulator, a lithium-ion accumulator, or a battery.
- Example 1 A piece of lithium is cut using a guillotine blade according to a standard process, without ultrasonic assistance (Figure 2A). Cutting tests show significant deformation of the part, due to the application of high pressure. There is also a poor surface finish (Figure 2B).
- Example 2 A piece of lithium is cut using a razor blade actuated using a 20 kHz ultrasound generator and a power of 750 W (Cole-Palmer) (Figure 3A). A small amount of light mineral oil is used as a lubricant to protect the lithium from oxidation during the cutting operation. The cut is made without force, quickly, and the surface finish is of good quality ( Figures 3B and 3C). The amplitude is modulated between 20 and 80%; this influences the cutting speed. Lithium does not adhere to the blade.
- Example 3 An ultrasound-assisted microtome is used to cut a stack to be studied under a microscope. A vibrating diamond blade cuts a complete pile to visualize the cross section. The section shows the different components of the battery (current collectors, anode, cathode, solid electrolyte, metal-plastic bag). The cut is clean, only a slight deformation of the different thicknesses of the components of the pile is observed.
- Example 4 During the manufacturing process of an “all solid” battery by stacking bifacial batteries, the energized (chemically active) battery is cut using a blade by ultrasonic assistance. A short circuit is created (sharp cut) by the action of the metal knife, but the speed of the cut and its sharpness eliminates the need to use chemical scarring of the edges of the pile.
- Example 5 An aluminum strip is split in order to reduce its width. An exacto blade by ultrasonic assistance is used in the process. A clean cut without tearing is obtained. This method is generally used to resize current collectors, anodes, cathodes, solid electrolytes, cells, half cells or any other combination of cell components. It is noted that the durability of the blade is increased.
- Example 6 A lithium ingot 6 inches in diameter and 24 inches long is poured by a melting process. The billet, once removed from the mold, has ends comprising imperfections (shrinkage area, porosity, inclusions). So that the ingot can be extruded without generating defects, the ends are cut using a steel blade having an ultrasonic assisted system. There is a fairly clean finish of the cuts.
- Example 7 Cutting by ultrasonic assistance was tested on several soft metals at room temperature.
- the metals tested include: Pb, Na, Ca, Mg, Al, Cu, Ni. All metals with a hardness below 4 on the Mohs scale are successfully cut and a fairly clean finish is noted.
- Example 8 Tests were carried out in order to measure the impact of the cutting pressure on the deformation of a round lithium rod 10 mm in diameter.
- the assembly used is shown in Figure 4.
- the rod is covered with mineral oil to reduce the heating of the blade.
- Figure 5A shows the result obtained after cutting without ultrasonic assistance.
- Figure 5B shows the result obtained after cutting with ultrasonic assistance. The difference is obvious: cutting with ultrasonic assistance produces a clean result. Indeed, the ultrasonic assistance greatly reduces the pressure applied to make the cut; and the metal remains practically intact, with no apparent deformation.
- Example 9 A test was carried out using an ultrasonic press with integrated generator (TED 2000X, Telsonic) with a sonotrode blade (TE 20 42328, Telsonic). The 150 mm wide by 60 mm high blade, covered with mineral oil and vibrating at an ultrasonic frequency (20 kHz), cut the lithium ingot along its effective length, cutting it precisely with a clean cut without significantly deforming the ingot. The section is shown in Figure 6.
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- Optics & Photonics (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Primary Cells (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
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- Secondary Cells (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA3027620A CA3027620A1 (fr) | 2018-12-13 | 2018-12-13 | Coupe de metaux mous par assistance ultrasonore |
PCT/CA2019/051782 WO2020118431A1 (fr) | 2018-12-13 | 2019-12-11 | Coupe de métaux mous par assistance ultrasonore |
Publications (2)
Publication Number | Publication Date |
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EP3894152A1 true EP3894152A1 (fr) | 2021-10-20 |
EP3894152A4 EP3894152A4 (fr) | 2022-08-17 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19897183.0A Pending EP3894152A4 (fr) | 2018-12-13 | 2019-12-11 | Coupe de métaux mous par assistance ultrasonore |
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US (2) | US20220048122A1 (fr) |
EP (1) | EP3894152A4 (fr) |
JP (1) | JP2022513794A (fr) |
KR (1) | KR20210100107A (fr) |
CN (1) | CN113195181A (fr) |
CA (2) | CA3027620A1 (fr) |
WO (1) | WO2020118431A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CA3027620A1 (fr) | 2018-12-13 | 2020-06-13 | Hydro-Quebec | Coupe de metaux mous par assistance ultrasonore |
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US1354505A (en) | 1919-05-24 | 1920-10-05 | Ohio Brass Co | Sectional insulator |
US3091144A (en) * | 1954-09-04 | 1963-05-28 | Villalobos Hum Fernandez-Moran | Method of cutting substances |
GB1354505A (en) * | 1970-09-09 | 1974-05-30 | Cadbury Ltd | Method of and apparatus for cutting a blanket of confectionery product |
FR2657552B1 (fr) | 1990-01-30 | 1994-10-21 | Elf Aquitaine | Procede et dispositif de decoupe d'un ensemble multicouche constitue d'une pluralite de couches minces. |
US5695510A (en) * | 1992-02-20 | 1997-12-09 | Hood; Larry L. | Ultrasonic knife |
DE69802134T2 (de) | 1997-04-23 | 2002-03-07 | Hydro Quebec | Dünnschicht Feststoff Lithiumzellen und Verfahren zur Herstellung |
JP3469488B2 (ja) * | 1999-01-21 | 2003-11-25 | 株式会社アルテクス | 超音波振動切断装置 |
JP3469516B2 (ja) * | 1999-12-09 | 2003-11-25 | 株式会社アルテクス | 超音波振動切断用ツール及びその製造方法 |
JP2008126391A (ja) * | 2006-11-24 | 2008-06-05 | Towa Corp | 構造物の加工方法及び装置 |
US8163409B2 (en) * | 2006-12-15 | 2012-04-24 | Panasonic Corporation | Evaluation method for safety upon battery internal short circuit, evaluation device for safety upon battery internal short circuit, battery, battery pack, and manufacturing method for battery and battery pack |
CN100536149C (zh) * | 2007-12-18 | 2009-09-02 | 李毅 | 一种硅薄膜太阳能电池及其制造方法 |
JP5456290B2 (ja) * | 2008-09-18 | 2014-03-26 | スタンレー電気株式会社 | 結像素子の作成方法 |
JP5316889B2 (ja) * | 2009-12-18 | 2013-10-16 | 精電舎電子工業株式会社 | 超音波カッター装置、及び超音波カッター装置用の工具ホーン |
JP6100165B2 (ja) | 2010-10-15 | 2017-03-22 | エイ123・システムズ・リミテッド・ライアビリティ・カンパニーA123 Systems, Llc | 一体型バッテリタブ |
JP5408210B2 (ja) * | 2011-09-02 | 2014-02-05 | 株式会社リコー | トナー及び現像剤 |
WO2014062214A1 (fr) * | 2012-10-19 | 2014-04-24 | Dow Global Technologies Llc | Appareil et procédé de découpe de matériaux formables et/ou repliables |
GB201604931D0 (en) * | 2016-03-23 | 2016-05-04 | Cellpath Ltd | Microtomy method and device |
CA3027620A1 (fr) | 2018-12-13 | 2020-06-13 | Hydro-Quebec | Coupe de metaux mous par assistance ultrasonore |
-
2018
- 2018-12-13 CA CA3027620A patent/CA3027620A1/fr not_active Abandoned
-
2019
- 2019-12-11 EP EP19897183.0A patent/EP3894152A4/fr active Pending
- 2019-12-11 WO PCT/CA2019/051782 patent/WO2020118431A1/fr unknown
- 2019-12-11 CA CA3120747A patent/CA3120747A1/fr active Pending
- 2019-12-11 JP JP2021533519A patent/JP2022513794A/ja active Pending
- 2019-12-11 US US17/312,971 patent/US20220048122A1/en not_active Abandoned
- 2019-12-11 KR KR1020217017598A patent/KR20210100107A/ko unknown
- 2019-12-11 CN CN201980082356.5A patent/CN113195181A/zh active Pending
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2023
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US20220048122A1 (en) | 2022-02-17 |
US20240001464A1 (en) | 2024-01-04 |
JP2022513794A (ja) | 2022-02-09 |
KR20210100107A (ko) | 2021-08-13 |
CA3120747A1 (fr) | 2020-06-18 |
EP3894152A4 (fr) | 2022-08-17 |
WO2020118431A1 (fr) | 2020-06-18 |
CN113195181A (zh) | 2021-07-30 |
CA3027620A1 (fr) | 2020-06-13 |
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