WO2012045439A2 - Gehäuse zur aufnahme einer flachen elektrochemischen zelle - Google Patents
Gehäuse zur aufnahme einer flachen elektrochemischen zelle Download PDFInfo
- Publication number
- WO2012045439A2 WO2012045439A2 PCT/EP2011/004944 EP2011004944W WO2012045439A2 WO 2012045439 A2 WO2012045439 A2 WO 2012045439A2 EP 2011004944 W EP2011004944 W EP 2011004944W WO 2012045439 A2 WO2012045439 A2 WO 2012045439A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- walls
- cells
- side walls
- cell
- Prior art date
Links
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
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Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/033—Making of fire-extinguishing materials immediately before use of gel
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/04—Processes
Definitions
- Housing for receiving a flat electrochemical cell
- the invention relates to a housing for accommodating at least one flat electrochemical cell with a sealing seam extending at least in part at its edge, an arrangement of a plurality of such cells in such a housing and a method for producing such a housing or such an arrangement.
- Electrochemical energy storage devices also referred to below as electrochemical cells or galvanic cells, are frequently produced in the form of flat, stackable units, from which so-called batteries for various applications can be produced by combining a plurality of such cells.
- electrochemical cells also referred to below as electrochemical cells or galvanic cells
- batteries for various applications can be produced by combining a plurality of such cells.
- DE 10 2009 005 124 A1 has, for example, proposed arrangements of such cells in which the cells are held in frames which are provided with suitable construction elements in order to mechanically stabilize the cells Aggregate aggregates from multiple cells.
- the present invention has for its object to provide a technical teaching for the mechanical fixation or housing flat electrochemical cells, which avoids or overcomes the disadvantages and limitations of known solutions as far as possible.
- This object is achieved by a housing for accommodating at least one flat electrochemical cell with a sealing seam according to claim 1 extending at least in part at its edge, by an arrangement of a plurality of such cells according to claim 9 and by a method for producing such a housing or such Arrangement according to claim 12 solved.
- the dependent claims relate to advantageous developments of the invention.
- a housing for receiving at least one flat electrochemical cell with a sealing seam running at its edge at least in regions, wherein the housing has two housing side walls arranged substantially parallel to one another which have in their inner surfaces for each cell to be received a pair of opposing notches configured to receive the at least one sealed seam of the respective cell.
- any device is to be understood that is suitable to shield an electrochemical cell or an aggregation of multiple electrochemical cells against unwanted or disturbing influences from the outside and / or the environment of the electrochemical cell or the aggregation of such electrochemical To protect cells from unwanted effects that may result from the operation of such cells.
- a housing preferably prevents or impedes unwanted mass transfer or mass transfer or energy exchange between the interior of the housing and the environment.
- an electrochemical cell is to be understood as meaning an electrochemical energy store, ie a device which stores energy in chemical form, delivers it in electrical form to a consumer and preferably also in electrical form from a charging device. can accommodate device.
- electrochemical energy stores are galvanic cells or fuel cells.
- a flat electrochemical cell is to be understood as meaning an electrochemical cell whose external shape is characterized by two essentially parallel surfaces whose vertical distance from one another is shorter than the average length of the cell measured parallel to these surfaces. Between these surfaces, often surrounded by a packaging or a cell housing, the electrochemically active components of the cell are arranged. Such cells are often surrounded by a multilayer foil packaging, which has at the edges of the cell packaging a sealed seam, which is formed by a permanent joining or closing of the foil packaging in the region of the sealed seam. Such cells are often referred to as pouch cells or as coffeebag cells.
- the embodiment of the pair of opposite incisions provided for receiving the at least one sealed seam of the respective cell relates to the shape, size and arrangement of these incisions suitable for this purpose.
- a housing in which at least one arranged between the two housing side walls housing wall is provided which has an incision in its inner surface for each cell to be received, which is designed to receive the at least one sealed seam of the at least one cell.
- a housing wall arranged between the two housing side walls preferably forms the bottom of the housing and / or the cover of the housing.
- a further housing wall disposed between the two housing sidewalls may also be a housing intermediate wall separating a plurality of layers of electrochemical cells housed within a housing.
- a further preferred embodiment of the invention provides at least one intermediate housing wall arranged between two incisions, which is preferably arranged between two adjacent electrochemical cells.
- Such intermediate housing walls preferably serve to thermally and / or mechanically separate the adjacent electrochemical cells from one another in order to avoid or prevent unwanted interactions between adjacent electrochemical cells as far as possible.
- At least one of the housing walls, housing partition walls or housing side walls is at least partially made of a compressible, particularly preferably an elastic material.
- a compressible particularly preferably an elastic material.
- materials made of a foam preferably of a polyethylene foam plastic.
- Such materials are particularly suitable for absorbing mechanical vibrations, shock or other potentially harmful influences and their
- the housing as housing comprising the entire cell body, preferably at battery module level, whereby application-specific vibration or thermal loads are isolated or at least partially absorbed.
- it is provided to adjust the housing block or the housing walls, housing partition walls or housing side walls with pockets material side so that even with an aging cell by partial elasticity of the material can be maintained optimal for cell operation pressure over the life of the cell.
- the optimum pressure can thus be maintained, which in particular has a positive effect on the life of cells which contain Separion separators, the process of aging and thus the life of the cell can be.
- the housing or the housing walls, housing partition walls or housing side walls are preferably protected against undesired effects to the outside by means of a multilayer composite material, by means of a hybrid material or by means of a fiber composite material or by means of similar lightweight construction materials.
- Preferably good heat conductive materials are used.
- an elastomer is used as the base or matrix material for this fiber composite material.
- the reinforcing fibers in this material are multidirectional, preferably targeted or unidirectional.
- an increase in the component strength of the walls of the housing is preferably achieved and thus the safety of the battery housing is increased.
- the deformation of the housing walls, housing partition walls or housing side walls is preferably influenced.
- a directed, locally different deformation of the housing walls, housing partition walls or housing side walls is thus achieved.
- housing partition walls or housing side walls is achieved in particular that this expands in existing cavities or recesses which surround the battery case.
- a directed deformation are preferably the uncontrolled contact with objects which Surrounded battery case, eg frame parts or other battery case, avoided and thus increases the safety of the battery case.
- the reinforcing fibers of this fiber composite material for this side wall according to the invention preferably consist of a plastic. Preferably, this has a deviating from the base material expansion behavior.
- these reinforcing fibers are made of nylon or aramid.
- the reinforcing fibers may also be made of a material of a group of materials other than plastic, e.g. it can be glass, metal, ceramic or carbon fibers.
- the reinforcing fibers have a thickness of 1 ⁇ to 1,000 pm, preferably from 10 ⁇ to 100 ⁇ and particularly preferably from 20 pm to 40 ⁇ on.
- the elongation behavior of these reinforcing fibers can be preferably determined by their geometry, e.g. by the normal cross-sectional area to the main stress direction, or preferably by its modulus of elasticity. Due to the different expansion behavior of the reinforcing fibers and the base material can influence the deformation behavior of this side wall and thus increase the safety of the battery case.
- the side wall is at least partially made of a plastic having an elongation at break of 100% to 1,000%, such as polyolefin, of a plastic having an elongation at break of 50% to 500%, such as polyamide or a plastic with an elongation at break of 5% 80%, such as polycarbonate.
- the side wall is at least partially made of a plastic from the group of poly-ethylene-propylene-dienes (EPDM).
- EPDM poly-ethylene-propylene-dienes
- this plastic is not chemically attacked or decomposed by the contents of an electrochemical energy storage device or by the reaction products thereof. It is preferably prevented by a coating or by a protective device that reactive ingredients come into contact with this side wall.
- a suitable choice of the plastic for the side wall prevents Reactive substances escape from the battery case, thus increasing safety.
- the thermal conductivity is preferably achieved by a high proportion of thermally conductive fibers, which preferably consist of a material having the aforementioned thermal conduction properties.
- a fiber composite material has a fiber content of 30 to 95% by volume, preferably 40 to 80% by volume and more preferably 50 to 65% by volume.
- this is a material with a high thermal conductivity, preferably with a thermal conductivity at 20 ° C of 40 to 1000 W / (K * m), preferably 100 to 400 W / (K * m) and particularly preferably about 220 W. / (K * m).
- this material comprises aluminum as an essential component, further constituents may preferably be manganese, magnesium, copper, silicon, nickel, zinc and beryllium.
- a hybrid material is to be understood as meaning a material which, in regions, consists of a plastic, preferably of a fiber-reinforced plastic and preferably at least partially of a metallic material.
- the hybrid material preferably has good thermal conduction properties
- this thermal conductivity is less than 0.5 W / (K * m), preferably less than 0.2 W / (K * m), and more preferably less than 0.1 W / (K * m), each at 20 ° C. Due to the favorable thermal conduction properties and in the case of a hybrid material and the good insulation properties of the battery case, the temperature balance of the energy storage devices can be easily influenced and thus increase the reliability.
- the housing or the arrangement according to the invention preferably has a cell pressure distribution layer.
- the serves Cell pressure distribution layer of the planar distribution of a force or a pressure which is exerted by a foreign body on this cell pressure distribution layer.
- the cell pressure distribution layer separates the battery cell from a foreign body.
- a cell pressure distribution layer comprises at least one material from the following group, which includes: iron-containing alloys, steel, light metals such as aluminum, titanium or magnesium, in particular crosslinked plastics, plastics with fillers and / or fabrics / layers, in particular carbon , Glass and / or aramid fibers.
- a cell pressure distribution layer honeycomb structures, in particular with aramid fibers and / or a metal foil, wherein particularly preferably the longitudinal axes of the honeycomb are arranged in the direction of the acting foreign body.
- the honeycombs are closed in the longitudinal direction with a cover layer.
- the cell pressure distribution layer preferably has a rib or web, which particularly preferably extends in the direction of an expected foreign body.
- the cell pressure distribution layer is preferably arranged only in predetermined areas of the housing or of the arrangement, particularly preferably in areas in which a danger by a foreign body with in particular a small end face is to be expected.
- a cell pressure distribution layer is at least partially electrically conductive, in particular by means of a metallic coating and / or a metal wire.
- the housing has at least partially a material from the following group, which includes: iron-containing alloys, steel, light metals such as aluminum, titanium or magnesium, plastics such as in particular PP, PA or PE, which are especially crosslinked and which in particular with fillers and / or woven / laid, in particular with glass and / or aramid fibers.
- the housing has a honeycomb structure at least in some areas, particularly preferably with aramid fibers and / or with a metal foil, with particular preference being given to Longitudinal axes of the honeycomb are arranged in the direction of the acting foreign body.
- the material of the housing walls, housing partition walls or housing side walls with flame retardant additives or with extinguishing agents or with extinguishing agent additives, in case of fire of a cell extinguishing effect as close to the source of the fire and preferably also without action to achieve from the outside.
- a fire is to be understood as any process in which the energy store or parts of the energy store or its surroundings transform or decompose in an undesired chemical reaction. Fires in this sense are in particular exothermic chemical reactions of components or components of an energy storage device or its environment, which often occur as a result of overheating of the energy storage device or its components.
- an extinguishing agent is to be understood as meaning a substance or a substance mixture which exerts a extinguishing effect, ie preferably an inhibiting effect on fires and / or prevents or impedes the formation of fires.
- an extinguishing effect should preferably be understood to mean an effect which counteracts a fire, ie which can prevent or mitigate the consequences or the development of a fire.
- extinguishing agents or their preferred ingredients are substances which deprive a fire source of a chemical reactant without which the fire can not be sustained, or which inhibit a chemical reaction conducive to the initiation or maintenance of a fire.
- Extinguishing agents are preferably prepared by mixing an extinguishing additive or a flame retardant additive with a solvent or with a carrier.
- fire-retardant additives are preferably so-called D extinguishing powder (also: metal fire powder, metal fire extinguisher powder, M powder) or a so-called ABC extinguishing powder, ie preferably an extinguishing agent additive or fire retardant additive, which is predominantly finely ground Ammonium phosphate and ammonium sulfate.
- preferred D-erosion powders preferably consist mainly of very finely ground alkali chlorides (often sodium chloride). A special feature of these substances is their high reaction and temperature stability.
- Preferred extinguishing agent additives or fire retardant additives in the context of this invention are so-called gelling agents which, in connection with other materials, solvents or carriers such as, preferably water, preferably form adhesive and preferably viscous gels or viscoelastic fluids, preferably characterized by their high adhesiveness to burning objects and their surfaces are distinguished.
- Gelling agents are preferred examples of extinguishing agent additives, which are preferably based on so-called superabsorbents, and which are preferably kept as powder or solid materials or else as emulsions.
- Superabsorbents can often take up many times their weight or volume of water or other carrier substance. Water-based gels which are formed by corresponding superabsorbents by mixing with water have the advantage over conventional foam carpets that an airtight barrier layer is formed which lasts longer than conventional foam carpets and which releases significantly less water to the combustible material.
- a viscoelastic fluid is to be understood as meaning a fluid which has the property of viscoelasticity.
- An (ideal) fluid is understood to mean a substance which does not have any (slower) shear of any desired degree Resists resistance.
- compressible fluids gases
- incompressible fluids liquids
- the superordinate term "fluid” is used because most physical laws apply (approximately) equally to gases and liquids, and many of their properties differ only quantitatively, but not fundamentally qualitatively, because of their behavior real fluids can be classified into "Newtonian fluids.””with the descriptive fluid mechanics and non-Newtonian fluids with the descriptive rheology.
- the difference here is in the flow behavior of the medium, which is described by the functional relationship of shear stress or shear stress and distortion velocity or shear rate.
- Viscoelasticity refers to the time, temperature and / or frequency dependent elasticity of fluids such as e.g. of polymeric melts or solids, such as plastics.
- the viscoelasticity is characterized by a partially elastic, partially viscous behavior. After removal of an external force, the material returns only incompletely to its original state; the remaining energy is dissipated in the form of flow processes.
- a gel is to be understood to mean a finely dispersed system comprising at least one first, often solid and at least one second, frequently liquid phase.
- a gel often constitutes a colloid.
- the solid phase forms a spongy, three-dimensional network whose pores are filled by a liquid or by a gas. Both phases often penetrate completely.
- Colloids are particles or droplets which are finely distributed in another medium (solid, gas or liquid), the dispersion medium.
- an electrochemical energy storage in which the extinguishing agent or the extinguishing agent additive is a solid or an elastically deformable material or is contained in such a material.
- the term solid in this context should also include pressed aggregations of powders or foams, preferably elastically deformable foams.
- an electrochemical energy store in which the extinguishing agent or the extinguishing agent additive is arranged as a spacer or edge protection plates between each two adjacent electrochemical cells or between an electrochemical cell and a housing wall.
- an electrochemical energy store in which the extinguishing agent or the extinguishing agent additive can absorb or contain a multiple of its volume of water.
- the extinguishing agent or the extinguishing agent additive can absorb or contain a multiple of its volume of water.
- extinguishing agents based on gelling agents preferably those which contain extinguishing agent additives based on so-called superabsorbers.
- an electrochemical energy store in which the extinguishing agent or the extinguishing agent additive contains at least one polymer, preferably a copolymer, particularly preferably an acrylamide copolymer or a sodium acrylate copolymer.
- an electrochemical energy store is provided in which the extinguishing agent or the extinguishing agent additive contains at least one fatty acid ester.
- an electrochemical energy store in which the extinguishing agent or the extinguishing agent additive contains at least one surfactant.
- an electrochemical energy store is provided in which the extinguishing agent or the extinguishing agent additive at least one mixture or an emulsion of water and at least one fatty acid ester, at least one polymer, preferably a copolymer, particularly preferably an acrylamide Copoiymer or a sodium acrylate copolymer.
- an electrochemical energy store wherein the extinguishing agent is a mixture or a.
- an electrochemical energy store is provided, is used in the extinguishing agent additive in conjunction with water and a mixture or an emulsion of about 50% of at least one polymer, about 10% of at least one surfactant and about 40% at least of an ester oil.
- the carrier substance, with which the extinguishing agent additive can mix to form an extinguishing agent a coolant which flows through a closed during normal operation of the energy storage coolant circuit, which is designed so that the coolant in certain cases from the closed fire Coolant circuit leak and can develop at these points a extinguishing effect.
- a coolant is to be understood as meaning a fluid material, preferably a gaseous or liquid heat transport medium, which absorbs heat from its surroundings, transporting this heat by flow, and can also deliver this heat to its environment, and which is suitable due to its physical properties, heat by heat conduction and / or heat transport via aerodynamic or hydrodynamic currents, especially via convection currents to transport in the heat transport medium.
- heat transfer media commonly used in the art are, for example, air or water or other common coolants.
- gases or liquids are also used, such as chemically inert (less reactive) gases or liquids, such as noble gases or liquefied noble gases or substances with high heat capacity and / or thermal conductivity.
- a flowable material should be understood to mean any material in which a flow can develop in an aerodynamic or hydrodynamic sense, or in which such a flow can be maintained.
- examples of such materials are in particular gases and liquids. But even in a mixture of liquids or gases and finely divided solids, so-called aerosols, or in colloidal solutions flows in this sense can be maintained or arise.
- a particularly preferred device according to the invention has a device for stabilizing the coolant pressure in the case of local leakage of the coolant from the coolant circuit in the event of fire.
- This embodiment of the invention may be associated with a substantial or complete preservation of the refrigerant pressure and thus the cooling effect, when the refrigerant escapes in places from the cooling circuit to develop its extinguishing effect at these points.
- the occasional leakage of the coolant in case of fire is preferably effected by valves with a preferably mechatronic or sensory triggering mechanism. So it is possible to use an extinguishing agent in case of fire targeted to apply to a continuous cell and so to prevent the so-called cascade effect.
- water is used as a coolant, and in which this coolant flows through a closed during normal operation of the energy storage cooling circuit, which is designed so that the water can escape in certain cases from the closed coolant circuit in case of fire and mixed with an extinguishing agent additive upon exiting the coolant loop to form a gel or viscoelastic fluid.
- an extinguishing agent additive consisting of a mixture of at least one polymer, at least one surfactant and at least one ester oil.
- an additive consisting of a mixture of about 50% of at least one polymer, about 10% of at least one surfactant and about 40% of at least one ester oil.
- the beneficial effects of the cooling and extinguishing mixture or the additive are due to the viscoelasticity of the cooling and extinguishing mixture and its ability to bind water.
- the adhesive force of the coolant can also be increased on smooth surfaces. The liquid does not drain off unused.
- the evaporation rate of the liquid can be considerably reduced even at higher temperatures.
- the liquid consumption can be significantly reduced.
- the liquid incorporated in a gel structure can exert an increased cooling effect due to the relatively high layer thickness and the reduced rate of evaporation. This effect is of particular importance in combating fires at very high temperatures.
- the extinguishing agent additive in some preferred embodiments, is preferably in the form of a mixture consisting of P wt% of at least one polymer, T wt% of at least one surfactant and E wt% of at least one ester oil, based on the total amount of the additive :
- This may preferably be an arrangement of cooling channels, heat conductors or heat pipes. In this way it is possible to stabilize the operating temperature of the electrochemical cells and in this way to contribute to the most efficient and safe operation of the electrochemical cells.
- the heat-conducting or heat-transporting structures are preferably cooling channels, wires or similar structures in comb-shape or in YO-form, the are preferably arranged axially and wide legs.
- the housing block or the entire arrangement is mechanically stabilized and held, and that the cooling approaches the cells on the substance side and has the function of a load-bearing element which acts to inhibit vibration.
- Preferred materials in this context are C fibers, copper, heat conducting foils or cooling fins.
- At least one of the housing walls, housing partition walls or housing side walls has a preferably gas-filled cavity.
- Such cavities preferably serve to allow expansion of the electrochemical cells during operation and to accommodate the associated increase in volume of the cells in order to avoid or reduce adverse effects of such volume increases of individual cells on adjacent cells.
- the sealing seams of the cells are at least partially and at least partially embedded in the recesses in the housing walls and / or in the housing side walls.
- the cells are held in the housing by frictional engagement between the cells and at least one of the housing walls, housing partitions or housing side walls.
- a method for producing a housing or an arrangement according to the invention is further provided, in which the housing is wholly or partially cut from a strand.
- Fig. 1 shows schematically a first embodiment of a flat electrochemical cell
- Fig. 2 shows schematically a second embodiment of a flat electrochemical cell
- Fig. 3 shows a schematic arrangement of an inventive arrangement
- a plurality of electrochemical cells according to a preferred embodiment of the invention.
- FIG. 4 schematically shows a further preferred exemplary embodiment of an arrangement according to the invention.
- FIG. 5 is a schematic sectional view of a section of an inventive arrangement.
- Figure 1 shows schematically an embodiment of a flat electrochemical cell 2, in which the Abieiter 6a and 6b, ie the electrical connections of the cell are led out at opposite ends of the cell from the wrapping or packaging of the cell.
- the packaging or wrapping of the electrochemical cell is closed at the side by means of a sealing seam 3, which is formed, for example, by a heat-sealing step or similar process steps in which, for example, the multiple layers of the packaging film are connected to one another in a fluid-like manner so that a mass transfer between the interior of the electrochemical cell and its environment is practically impossible.
- the sealing seam 3 is regularly considerably thinner than the actual body of the electrochemical cell.
- the sealed seam is suitable for being inserted into an incision in a housing wall of a housing according to the invention for accommodating one or more such electrochemical cells.
- Figure 2 shows schematically a further preferred embodiment of a flat electrochemical cell, in which the arresters 6a and 6b are led out at the same end from the edge of the enclosure or packaging of the electrochemical cell. Since in this embodiment the flat electrochemical cell at the opposite end no arresters are led out of the edge region of the cell 2, the width of the sealing seam 3 at this opposite end is narrower than at the end from which the arresters 6a and 6b are led out.
- the embodiment of the electrochemical cell shown in Figure 1 is therefore particularly suitable for housing forms in which 2 opposite housing side walls of the housing according to the invention have incisions in which the sealing seam 3 can be embedded, whereas that shown in Figure 2 embodiment of an electrochemical cell in a special way suitable, with its sealed seam 3 not only in incisions be embedded in the two side walls but also in an incision in the bottom plate of a housing.
- FIG. 3 schematically shows an exemplary embodiment of a housing according to the invention with two housing side walls 4 lying opposite one another, which have recesses 5 in which the sealing seams 3 of a plurality of electrochemical cells 2 with dischargers 6 are embedded. Between the electrochemical cells housing intermediate walls 8 are arranged.
- a perspective side view of a preferred embodiment of a housing 1 according to the invention schematically shows the figure 4, in which electrochemical cells of the construction shown in Figure 2, in which the Abieiter protrude at the same end of the galvanic cell from the wall area with their sealing seams 3 in the Sections 5 of the housing side walls 4 of the housing 1 are recessed.
- FIG. 5 schematically shows an enlarged view of a detail of an arrangement according to the invention, in which an electrochemical cell 2 with its sealing seams 3 is embedded in notches 5 of two opposing 4 of a housing.
- the illustrations in the figures are preferably schematic and in particular often not necessarily true to scale.
- the present invention and its embodiments provide the advantageous possibility to dispense with a frame construction for electromagnetic cells and insert the cells instead with their sealed seam directly into a housing according to the invention.
- the sealing seam of the electrochemical cells with appropriate choice of the housing material, which preferably consists of a compressible and elastic material, particularly preferably made of a foam plastic material to protect.
- the housing material which preferably consists of a compressible and elastic material, particularly preferably made of a foam plastic material to protect.
- the cell can be held by a frictional engagement over the entire surface and thereby additionally relieved.
- those embodiments of the invention that rely on appropriate materials and / or the possibility of using housing partitions provide additional protection against mechanical effects on the cells, for example against the effects of unwanted vibrations.
- a foamed plastic is given the advantageous possibility that the electrochemical cells can expand their volume, without thereby undesirable effects on adjacent cells or other damage to be feared.
- manufacturing tolerances in the manufacture of electrochemical cells can be well compensated by suitably embodied embodiments of the invention. With appropriate choice of material significant weight savings compared to batteries are possible in which the electrochemical cells are held by frame structures.
- housing intermediate walls can be embedded in these housing intermediate walls in those embodiments which provide such intermediate walls, for example, wire elements. This is particularly advantageous, for example, if the housing intermediate walls made of a foam plastic material.
- wire elements for example, if the housing intermediate walls made of a foam plastic material.
- other heat conduction or heat transfer means can be embedded in the housing partitions or in other housing walls.
- housing or parts of this housing according to the invention are made of foam material, such foam blocks can be produced inexpensively as an endless product or as a strand cost and tailored to fit.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Dispersion Chemistry (AREA)
- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Fire-Extinguishing Compositions (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11770350.4A EP2625733A2 (de) | 2010-10-04 | 2011-10-04 | Gehäuse zur aufnahme einer flachen elektrochemischen zelle |
JP2013532069A JP2013546120A (ja) | 2010-10-04 | 2011-10-04 | 平坦な電気化学セルを収容するためのハウジング |
KR20137011375A KR20130117779A (ko) | 2010-10-04 | 2011-10-04 | 평판 전기화학 전지를 수용하기 위한 하우징 |
CN2011800479538A CN103140957A (zh) | 2010-10-04 | 2011-10-04 | 用于容纳扁平的电化学单元的壳体 |
US13/877,744 US20130288100A1 (en) | 2010-10-04 | 2011-10-04 | Housing for accommodating a flat electrochemical cell |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010047453.3 | 2010-10-04 | ||
DE201010047453 DE102010047453A1 (de) | 2010-10-04 | 2010-10-04 | Gehäuse zur Aufnahme einer flachen elektrochemischen Zelle |
Publications (2)
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WO2012045439A2 true WO2012045439A2 (de) | 2012-04-12 |
WO2012045439A3 WO2012045439A3 (de) | 2012-07-19 |
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PCT/EP2011/004944 WO2012045439A2 (de) | 2010-10-04 | 2011-10-04 | Gehäuse zur aufnahme einer flachen elektrochemischen zelle |
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US (1) | US20130288100A1 (de) |
EP (1) | EP2625733A2 (de) |
JP (1) | JP2013546120A (de) |
KR (1) | KR20130117779A (de) |
CN (1) | CN103140957A (de) |
DE (1) | DE102010047453A1 (de) |
WO (1) | WO2012045439A2 (de) |
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- 2011-10-04 JP JP2013532069A patent/JP2013546120A/ja active Pending
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- 2011-10-04 EP EP11770350.4A patent/EP2625733A2/de not_active Withdrawn
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Also Published As
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EP2625733A2 (de) | 2013-08-14 |
US20130288100A1 (en) | 2013-10-31 |
CN103140957A (zh) | 2013-06-05 |
KR20130117779A (ko) | 2013-10-28 |
DE102010047453A1 (de) | 2012-04-05 |
JP2013546120A (ja) | 2013-12-26 |
WO2012045439A3 (de) | 2012-07-19 |
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