Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/04—Construction or manufacture in general
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
  • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
  • H01G11/78—Cases; Housings; Encapsulations; Mountings
  • H01G11/82—Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
  • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
  • H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
• • 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
  • H01M10/0468—Compression means for stacks of electrodes and separators
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/04—Construction or manufacture in general
  • H01M10/049—Processes for forming or storing electrodes in the battery container
• • 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
  • H01M10/0422—Cells or battery with cylindrical casing
• • 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 production method for
• An electrode assembly wherein an electrode assembly has at least one positive and one negative electrode, which are intended to convert electrical energy into chemically bonded energy during charging and chemically bonded into electrical energy during discharge.
• these electrodes are at least partially surrounded by an envelope, wherein the envelope is usually of a form-elastic nature. This elasticity of the shape allows a certain size change of the electrode assembly without significant forces being exerted on the electrodes or on the cladding. Such a change in size is often caused by thermal and chemical processes and is in the operation of the
• Energy storage device usually indispensable. Often are in known
• Energy storage devices one or more of these electrode assemblies received in a usually dimensionally stable housing device, wherein only individual sections of the housing device can be dimensionally stable and other form-elastic.
• this housing device enables the energy storage device to be securely received and fastened; on the other hand, a planned force can be exerted on the electrode assemblies by means of this housing device, thus counteracting their excessive expansion during operation.
• Housing device often an elastic deformable element, which is supported on this. Frequently, an elastic element is used which has substantially the same base area as the
• Electrode assembly since as the largest possible force on the electrode assembly can be achieved. This area is to be understood as the area between the two larger spatial areas
• this elastic element In order to achieve a high power density of the energy storage device, this elastic element usually has a small size in its third spatial extent. This has the consequence that the elastic element is often designed as a film-like element, therefore often has little dimensional stability and thus is usually difficult to handle during assembly.
• US4269907A and US5328778A each show sheet-like elastic members which are inserted between or in the electrode assemblies to exert a force on the electrode assemblies, especially when they expand.
• the US20101 19927A shows a dimensionally stable housing in which a plurality of electrode assemblies are introduced. These electrode assemblies are surrounded by one or more elastic members, which exert a force on the electrode assemblies, particularly when the electrode assemblies are due to thermal or chemical processes expand.
• the elastic elements for applying the force effect can have a foam-like material.
• An object of the present invention is to provide an improved
• the object is achieved with a method according to claim 1, an energy storage device according to claim 7 and a
• Energy storage device an energy storage device is manufactured, which comprises a housing device, an electrode assembly and a
• Electrode assembly foil device has.
• the housing device is designed as a dimensionally stable housing device.
• Electrode assembly has at least one positive electrode and one negative electrode.
• the energy storage device has an electrode assembly foil device.
• Electrode assembly foil means has first, second and third spatial extents. This third spatial extent is small compared to this first and second extension. Preferably, the first and second extents of the electrode assembly foil means substantially correspond to the two major spatial ones
• the electrode assembly foil device can be converted from a first to a second state by means of a pressure change. This first and second state differed from each other at least by a change in this third spatial extent.
• the method of making this Energy storage device has a sequence of operations.
• Electrode assembly foil device prevails, or changing a housing internal pressure, this at least within the
• the electrode assembly foil device is inserted into the housing device in a first step.
• the housing device is dimensionally stable, in which case the term "dimensionally stable" in the sense of the invention means, in particular, that the housing device does not substantially deform under the action of significant forces.
• a preferably elastically deformable device in particular an electrode assembly foil device, can be supported and thus a force effect on the
• a pressure ratio between a foil pressure, wherein this prevails within the electrode assembly foil device, and a housing internal pressure, wherein this prevails at least within the housing device is changed.
• a ratio of the quotient of this film pressure and this housing internal pressure wherein either the film pressure or the housing internal pressure can be in the numerator of the pressure ratio.
• Electrode assembly foil device to expand, such Expansion is particularly in the direction of preferably dimensionally stable
• Electrode assembly foil device accordingly preferably exerts on the electrode assembly a force effect, preferably in the form of a surface load.
• Housing device is a particularly simple insertion of this
• the electrode assembly foil device has a smaller extension in at least one spatial direction before the change in this pressure ratio than after, the underlying object is achieved.
• Electrode assembly preferably on the degree of change of
• Pressure ratio depends, it is possible that with otherwise identical components different electrode assemblies can be constructed. In particular, it is possible to vary the number of electrode assemblies and / or their thickness when used in the same housing device, and the changed thickness by different pressure conditions in the
• Electrode assembly foil device to take into account.
• An electrode assembly in the sense of the invention means a device which is used in particular for providing electrical energy.
• the electrode assembly has at least two electrodes
• the electrode assembly is dischargeable and rechargeable, with ions of a conductive salt of an electrolyte migrating through the separator.
• charging energy storage device takes place in the electrode assembly, a conversion of supplied electrical energy into chemical energy.
• the electrode assembly has at least one so-called.
• a housing device is to be understood as meaning a device which serves in particular to accommodate at least one, but preferably a plurality of electrode assemblies.
• the housing device is to be understood as meaning a device which serves in particular to accommodate at least one, but preferably a plurality of electrode assemblies.
• Housing device usually one or more dimensionally stable
• the term dimensionally stable means that such a housing element is essentially not deformed even under a significant force, in contrast to form-elastic elements, such as e.g. a plastic film, which is considerably deformable in certain spatial directions, even under the slightest force.
• Dimensionally stable housing elements have as one component in particular metallic materials, plastic or fiber-reinforced materials.
• the housing device preferably serves to at least partially prevent environmental influences such as external forces from the electrode assembly (s). Furthermore, the housing device serves in particular for a possibility of attachment of the energy storage device to other
• Machine elements in particular frame, carrier or
• an electrode assembly foil device is to be understood as meaning a device which, by means of the modification of a
• Pressure ratio of a first, in particular a compressed, in a second, in particular decompressed, state is convertible.
• these first and second states differ in particular in a change of at least one spatial extent of the
• Electrode assemblies-foil device In particular, the spatial relationship
• the printing ratio is formed, in particular, from a film printing which prevails within at least one part of the electrode assembly film device, whereby this interior of the electrode assembly film device can initially also be completely evacuated and further from a housing internal pressure.
• This housing internal pressure initially prevails at least within the housing device.
• a change in the pressure ratio ie by increasing the film pressure relative to the housing internal pressure or by lowering the internal pressure of the housing relative to the film pressure or a combination of both
• the electrode assembly foil device is transferred from this first in this second state.
• the transfer of this first into this second state is therefore according to the
• electrode assembly film device should be understood as an open-pored or closed-pored film device.
• Electrode assembly film device having cavities, said cavities are at least partially closed not gas-tight and so gas exchange between cavities with each other or with the environment surrounding the electrode assembly foil device is enabled.
• the electrode assembly foil device has cavities, these cavities being substantially gas-tightly closed, in particular with the environment surrounding the electrode assembly foil device no gas exchange takes place.
• the housing device is closed in a further step.
• the closing of the housing device is preferably to be understood as meaning the positive, non-positive or cohesive closing of the housing device. Further preferably, under the
• This cover device can preferably be connected to the housing device.
• this cover device in the case of a cohesive connection, glued or welded, in the case of a positive or non-positive connection, screwed, riveted, verklippt or pressed.
• an anaerobic adhesive is used to close the housing means.
• an adhesive is to be understood as meaning an adhesive which cures with completion of the supply of air.
• an adhesive of the aforementioned type has the advantage that it hardens only or the curing only significantly accelerated when the cover device is placed on the housing device, since in particular only at this time enters the air termination.
• an adhesive of the aforementioned type has the advantage that it hardens only or the curing only significantly accelerated when the cover device is placed on the housing device, since in particular only at this time enters the air termination.
• Adhesive conceivable, preferably a first component of
• Adhesive adheres to the housing device and adheres a second component of the adhesive of the lid device. It is preferably also conceivable that a first and a second component of this adhesive are applied to only one component (housing device, cover device) and activated by the joining of these two components. This can be achieved in an advantageous manner in that one of these two adhesive components is introduced into a pressure-sensitive packaging, which package releases its contents when a pressure is applied, as occurs when joining the two components mentioned. Such a two-component adhesive also offers the advantage over conventional adhesives that the curing of the adhesive does not begin until the housing device is closed. By using a multi-component adhesive, the application of the adhesive to the Zu spagenden component from the rest
• Production process at least locally, be separated thereby can reduce unwanted impurities and it is an improved
• the sequence of operations for manufacturing the energy storage device is arranged such that first the electrode assembly foil device is inserted into the housing device and subsequently the at least one electrode assemblies. In a further preferred embodiment, the sequence of operations is arranged in such a way that first the electrode assembly in the
• Housing device is used and subsequently the
• Electrode assemblies-foil device Further preferably, the
• Electrode assembly can be used in the housing device.
• the first-mentioned sequence of working steps offers the advantage that in particular the hard-to-handle electrode assembly foil device (high flexibility) can be inserted particularly easily into the housing device and thus a faster assembly of the energy storage device is made possible.
• the second-mentioned sequence of operations offers the advantage that the electrode assembly, which is sensitive to external influences, such as force effects, can be used very early in the production process in the protective housing device, thus becomes a
• the electrode assembly foil means forms a kind of protective sheath for the electrode assembly as long as it is outside the housing means.
• Electrode assemblies can be particularly easily used in the housing device, thus an improved Hers is part process provided.
• the electrode assembly film device expands and this preferably leads to the electrode assembly foil device at the
• Housing device supports and a force on the
• Foil printing after inserting the electrode assembly foil device in the housing means facilitates insertion, including the electrode assembly, and on the other hand by the advantageous
• Electrode assembly has improved functions of
• An advantage of the pressure increase within the electrode assembly foil device is that this device normally has a low volume and thus only a small amount Energy input is necessary to increase the pressure.
• the individual electrodes are preferably pressed together flat, here by the detachment of the electrodes is counteracted by thermal or chemical processes and enables an improved function of the energy storage device.
• Electrode assembly foil device reduces the housing internal pressure. In particular, by this pressure reduction, the expands
• Electrode assembly foil device this preferably leads to the electrode assembly foil device at the
• Housing device supports and a force on the
• Housing device prevailing, compared to the housing internal pressure higher, air pressure is pressed onto the housing device and thus an additional sealing effect of the housing device can be achieved.
• Energy storage device has at least one preferably dimensionally stable housing device, an electrode assemblies and at least one
• Electrode assembly foil device on.
• the electrode assembly foil device has a base, which is substantially the same
• the electrode assembly has a substantially rectangular base body. Further preferably, the electrode assembly also in the
• the electrodes of the electrode assembly are preferably wound around a cylinder axis.
• the decisive base area for the electrode assembly foil device is the base surface which these electrodes have before winding, or the lateral surface of this cylindrical base body.
• Electrode assembly foil means to the footprint of at least one electrode enables a preferably uniform pressure to be applied to a large area of the electrode assembly, which often has a positive effect on performance, particularly in the case of current removal and feed, thus providing an improved energy storage device.
• the electrode assembly foil means comprises a dimensionally stable element for uniform pressure distribution. This dimensionally stable element may preferably be used as a kind of intermediate plate between the electrode assembly foil device and the
• Electrode assembly understood. By the uniform
• Pressure distribution on the electrode assembly is an improved function of the energy storage device achievable because the individual electrodes are pressed flat against each other.
• the electrode assembly foil device has an open-pore structure.
• the electrode assembly foil device has an open-pore structure.
• Electrode assembly foil device to a material, wherein this has a foam-like structure and is elastically deformable.
• Materials with an open-pore structure generally have a preferably good elastic deformability and are suitable for high degrees of deformation.
• Electrode assembly foil device has a closed-pore structure.
• the closed pores of such a structure are filled with a compressible medium, preferably with a gas, more preferably with air.
• the filling of these pores is provided with a non-flammable, preferably with a reaction-inhibiting gas.
• Electrode assembly foil device as well as the electrode assembly is made possible in the housing device. Further preferably, by means of the closed-pored structure reactants, such as
• the electrode assembly foil device is received within the electrode assembly.
• the electrode assembly foil device is within the Electrode assembly included if this has a cylindrical basic shape.
• the electrode assembly foil device is wound around the cylinder axis, around which the electrodes of the
• Electrode assembly are wound.
• the styrene assembly are wound.
• the styrene assembly are wound.
• Electrode assembly foil means disposed inside or outside a sheath of the electrode assembly.
• Electrode assembly foil device in the electrode assembly is a particularly simple and space-saving design of the energy storage device allows and thus an improved energy storage device for
• FIG. 2 shows a section through an energy storage device with a rectangular cross-sectional area and two electrode assembly foil devices
• cylindrical electrode assembly having a circular cross-sectional area and an electrode assembly foil device
• FIG 3 shows an energy storage device before the electrode assemblies with electrode assembly foil device are inserted into the housing device.
• Fig. 1 shows a section through an energy storage device.
• the energy storage device has two electrode assembly foil devices 1, a plurality of electrode assemblies 2, a housing 3 and a cover device 4.
• the electrode assembly film device 1 is supported on the one hand on the housing device 3 and exerts on the Electrode assemblies 2 from a force effect. By means of this force effect, the function of the electrode assemblies is improved because a detachment of the
• Housing device 3 stiffening ribs 5 on.
• the rigidity of the housing device 3 is increased, on the other hand the surface area of the latter is increased and thus improved heat dissipation from the housing device 3 is achieved.
• Electrode assemblies as typically occurs when energy is stored and expelled, usually expand the electrode assemblies, this expansion can in extreme cases to a separation of the
• Electrodes within the electrode assemblies come. With increased expansion of the electrode assemblies 2, the force effect that the electrode assembly film device 1 on the
• Electrode assemblies 2 exerts, thus the function of the
• the electrode assembly 2 shows a section through a cylindrical energy storage device, wherein the electrode assembly 2 here has a circular cross-sectional area, radially outside the electrode assembly 2 is the
• Electrode assembly foil device 1 is arranged.
• Electrode assembly foil device 1 is supported on the
• Housing device 3 and generates a force on the
• Electrode Assembly 2 The electrode assembly 2 is wound around the cylinder axis 6.
• the film pressure PEBF that is to say the pressure within the electrode assembly film device
• the ambient pressure PU G the ambient pressure also prevailing within the housing device. Due to the greater ambient pressure, the electrode assembly foil device is compressed, especially in its third spatial extension 7c.
• the first spatial extent 7a and the second spatial extent 7b of the electrode assembly foil device largely correspond to the first 8a and second 8b spatial extent of the electrode assembly.

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• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Power Engineering (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Secondary Cells (AREA)
• Battery Electrode And Active Subsutance (AREA)

Applications Claiming Priority (2)

Publications (1)

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Citations (6)

• 2011
  • 2011-11-02 DE DE102011117471A patent/DE102011117471A1/de not_active Withdrawn
• 2012
  • 2012-10-04 WO PCT/EP2012/004191 patent/WO2013064205A1/de active Application Filing

Patent Citations (7)

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