EP1352449B1 - Device for electric contact for textile material and use thereof for joule heating - Google Patents
Device for electric contact for textile material and use thereof for joule heating Download PDFInfo
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- EP1352449B1 EP1352449B1 EP02712001A EP02712001A EP1352449B1 EP 1352449 B1 EP1352449 B1 EP 1352449B1 EP 02712001 A EP02712001 A EP 02712001A EP 02712001 A EP02712001 A EP 02712001A EP 1352449 B1 EP1352449 B1 EP 1352449B1
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- Prior art keywords
- electrical contact
- fibrous material
- contact according
- fibrous
- adhesive
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/04—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation using electrically conductive adhesives
Definitions
- the present invention relates to a device for electrical contact between a power supply and a layer of a fibrous flexible conductive material and the use of this device for heating by Joule effect.
- the document FR 2,588,127 describes a device according to the preamble of claim 1.
- the layer of conductive material in the case where it would be necessary to give the layer of conductive material a non-planar shape, for example a curved or pleated shape, it is also difficult to obtain a continuous electrical contact over long lengths. This is particularly the case when the said material is used for heating by Joule effect, for which the heating should be as homogeneous as possible, so it is necessary to obtain a distribution of current in the fabric as homogeneous as possible over the entire length of the contact. The resultant of this effect will give a current transmission as homogeneous as possible over the entire surface of the material used between the two electrical contacts.
- An object of the present invention is therefore to overcome the aforementioned drawbacks by proposing a device for making an effective electrical contact between a direct or alternating current power supply and a layer of a flexible, predominantly fibrous conductive material, without damaging the material. fibrous, nor alter its mechanical strength.
- Another object of the present invention is to provide a device for producing a quasi-continuous electrical contact zone between said fibrous material and the power supply.
- the adhesive may consist mainly of an adhesive or resin itself conductive, or an adhesive or resin doped for example with silver, copper, graphite ... or an adhesive or a resin containing electrically conductive (micro) particles.
- the separate overlapping regions are arranged diametrically opposite, to allow the passage of electric current on all, or at least a major part of the layer of said fibrous material.
- the total thickness of the device allows its folding at the area covered with the adhesive and the metal ribbon.
- This folding can be a pleating, a crenellation, a winding of the layer on itself or on a support, or any other shaping that the flexibility of the layer of fibrous material allows.
- the thickness of the superposition of the metal ribbon and the adhesive layer may be in a wide range from 0.001 mm to 5 mm, and more particularly between 0.05 mm and 2 mm, the fibrous material may have a thickness between 0.1 mm and 10 mm, preferably between 0.4 mm and 5 mm.
- the intensity of the current delivered is a function of the contact resistance between the metal ribbon and the predominantly fibrous material and also depends on the width of the overlap zone. This width can be between 0.001 mm (ribbon in the form of a thread) and about 500 mm (flat ribbon). It is important when said contact resistance or the resistivity of the conductive adhesive used is large. This width must also be important if it is necessary to have a power delivered in the high fibrous material. However, if the ribbon is in the form of a wire, it is necessary to multiply the number of connections with the power supply.
- the overlapping zone by its superimposed structure, makes it possible to stiffen the fibrous material and thus the conventional connections to a power supply can be used: metal clips, welds, rivets, screws, etc. without damaging said material.
- this connection can be in a single point or in a multiplicity of points. A single point is preferred, for technical and economic reasons, the metal strip having the advantage of distributing the current over the entire length of the overlap area.
- said material is coated with a conductive varnish, at least in said overlap zone.
- the role of this varnish is mainly to stiffen the contact, improve interfiber contact, and thus reduce the electrical contact resistance while smoothing the surface of the fibrous material.
- the mechanical and electrical contacts between said fibrous material and the adhesive are improved, and by the same contacts between the fibrous material and the power supply.
- this device can be embedded in an electrical and / or thermal insulating material.
- the insulating material is provided with at least one perforation allowing a connection to the power supply, for example by screwing or riveting, electric lug or "banana” type plug, or the device is embedded with its connection in the insulating material.
- the metal strip has a resistivity approximately between 10 -8 and 10 -4 ⁇ .m, preferably between 10 -7 and 10 -4 ⁇ .m.
- the resistance of this ribbon must be lower than the contact resistance on the fibrous material.
- Said ribbon may for example be based on copper, zinc, aluminum, silver, nickel, iron, nickel-chromium, lead, or any other metal suitable for its electrical properties, thermal and mechanical or based on an alloy of these metals.
- the metal strip may also be replaced by an electrically conductive polymer material.
- the adhesive and the varnish must have a resistivity generally lower than that of said fibrous material. They may contain for example conductive (micro) particles that provide very many points of contact of very low electrical resistance.
- Said predominantly fibrous material that can be used in the present invention can be chosen from carbon or activated carbon materials in the form of a fabric, a felt or a fiber agglomerate.
- Their resistivity is generally of the order of 10 -4 to 10 -1 ⁇ .m.
- This predominantly fibrous material may be reinforced with a mesh, a grid or a network of another material of non-conductive mechanical reinforcement.
- Said reinforcing material may for example be polypropylene, cellulosic fibers, glass or quartz fibers.
- the electrically conductive fibrous material then serves as a heating element, and can be used for example for panels radiants, interior elements of ovens, fireplaces, exhausts, etc.
- the fibrous material is also an adsorbent material (based on activated carbon for example) and has previously adsorbed molecules (for example organic odor and / or pollutant molecules), the heating thereof allows the departure by desorption of these adsorbed molecules, and thus the regeneration of said material. It is also possible to use the device to simply measure the resistance or electrical resistivity of this type of fibrous material. Another use of the device according to the invention relates to the destocking of fuel molecules previously stored within the fibrous material.
- the device according to the present invention can also be used for the polarization of a fibrous surface, for example for the electrostatic capture of particles and dust.
- the fibrous material provided with the device according to the invention can also be used as an electrode in an electrolysis bath.
- the fibrous material (1) is a carbon fabric (activated or not), here constituted of woven fibers (warp and weft) (2).
- This material (1) which is electrically conductive (resistivity of the order of 10 -3 ⁇ .m) is covered, on two overlapping zones z 1 and z 2 of width l 1 and l 2 , located at the two opposite ends.
- this metal strip (4) corresponds to those of the respective covering areas of width l 1 , l 2 and length L 1 , L 2
- the thickness of the copper strip (4) is in this example about 35 ⁇ m and its width (l 1 l 2 ) of 19 mm, its resistivity is of the order of 1.7 10 -8 ⁇ .m.
- a metal ribbon / adhesive pair for example, a commercially available metal strip used for shielding connectors and cables against electromagnetic interference, grounding and drainage of electrostatic charges can be used.
- this metal ribbon / adhesive assembly has the main role of ensuring the transmission of the current between the power supply (5) and the fibrous material (1).
- the adhesive is an acrylic based glue containing conductive microparticles (6), as shown in section on the figure 2 .
- the resistivity through this adhesive is of the order of 5.10 -3 ⁇ .m.
- the device according to the invention can be doubled, that is to say be provided on both sides of the fibrous material (1), as schematically dashed on the figure 2 (adhesive (3 ') and metal ribbon (4')).
- the overlap areas z 1 and z 2 can be located, always on the opposite ends of the fibrous material (1), one on one side of said material, the other on the other face of the same material, thus allowing a better electrical circulation through this fibrous material.
- the carbon fabric (1) serves as an adsorbent material (for example if the fibrous material is activated carbon-based fabric or felt) it is advantageous to have the largest possible exchange surface with a minimum space requirement. It may therefore be advantageous for example to wind the said material on itself or to fold or wrinkle.
- the figure 3 shows such an arrangement by pleating.
- the fibrous material (1) here having the general shape of a cylinder (7), is folded into a multitude of folds (8) parallel to each other and parallel to the axis (9) of said cylinder (7).
- the device according to the invention can be placed at the two ends of said cylinder (7), on overlapping zones (z) located either inside or outside the cylinder, or one inside. the other outside, or even inside and outside this cylinder, at each end.
- connection (10) with the power supply (5) is here realized in a single point, by means of a weld made on the surface of the metal strip (4), at each end of said cylinder (7), of which only an end is represented on the figure 3 .
- the figure 4 shows a variant of the device according to the invention, where the superposition of a fibrous material (1), sandwiched between two conductive adhesive couples (3) / metal ribbon (4), is embedded in a insulating material (11) both electrical and thermal, which is for example an epoxy resin.
- FIG. 5a and 5b present two examples of connection.
- the cable (12) of the power supply which is directly connected to one of the metal strips (4), by means of a soldering of the wires (13) of said cable, after having removed the insulating sheath ( 14).
- a conductive element (15) is welded to one of the metal strips (4) before being embedded in the insulating material (11).
- This element (15) has a female part (16) which communicates with the outside of the block of insulating material (11) and makes it possible to receive a "banana” type plug (not shown), a cable connected to the power supply.
- the fibrous material (1) which is generally flexible and very flexible, can be reinforced by bonding with a mechanically stronger material (18). Such a variant is presented at figure 6 , or the colaminate portion (19) is disposed opposite the covering area by the adhesive (3) and the metal strip (4) of the device according to the invention, with respect to the fibrous material (1).
- the device according to the present invention can also serve as an electrical contact between two identical or different fibrous material modules (1a and 1b).
- An example is shown schematically in the figure 7 .
- the two fibrous materials (1a and 1b) are provided at their adjacent ends with a device according to the invention (respective couples conductive adhesive (3a, 3b) (not shown) / metal tape (4a, 4b)) between which is fixed , by gluing also by means of a conductive adhesive (not shown), an additional device comprising at least one (preferably two) metal ribbon (4c).
- a device according to the invention couples conductive adhesive (3a, 3b) (not shown) / metal tape (4a, 4b) between which is fixed , by gluing also by means of a conductive adhesive (not shown), an additional device comprising at least one (preferably two) metal ribbon (4c).
- Such an arrangement is used, for example, for placing Joule heating modules in series for the desorption of molecules previously adsorbed on activated carbon fabrics or felts.
Landscapes
- Resistance Heating (AREA)
- Laminated Bodies (AREA)
- Surface Heating Bodies (AREA)
- Inorganic Fibers (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Central Heating Systems (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Cleaning In General (AREA)
- Multicomponent Fibers (AREA)
Abstract
Description
La présente invention concerne un dispositif pour contact électrique entre une alimentation électrique et une couche d'un matériau conducteur souple fibreux et l'utilisation de ce dispositif pour le chauffage par effet Joule. Le document
Lorsque l'on souhaite alimenter en courant électrique des matériaux conducteurs ohmiques de type fibreux, tels que des tissus, des feutres, des matériaux composites aiguilletés, en carbone (activé ou non), leur structure, leur état de surface et l'absence de rigidité ne permettent pas de faire appel à des techniques classiques de contact électrique. En effet, il n'est pas possible de réaliser directement des points de soudure à leur surface. Il est également difficile d'utiliser des vis ou des rivets sans endommager le matériau fibreux, ni altérer sa tenue mécanique. Par exemple, les pinces métalliques peuvent provoquer des déchirures de la couche du matériau fibreux sous l'effet des tensions ou tractions mécaniques.When it is desired to supply electrical current ohmic fibrous-type conductor materials, such as fabrics, felts, needle-punched composite materials, carbon (activated or not), their structure, their surface condition and the absence of rigidity does not allow to use conventional techniques of electrical contact. Indeed, it is not possible to directly make solder points on their surface. It is also difficult to use screws or rivets without damaging the fibrous material or altering its mechanical strength. For example, the metal clamps can tear the layer of the fibrous material under the effect of voltages or mechanical pulls.
Il n'est pas non plus possible d'utiliser des contacts du type barreaux de cuivre rigides avec lesquels il est difficile de contrôler la pression exercée sur le matériau fibreux, ni de mettre en forme ce dernier. En outre, de tels barreaux n'assurent qu'un faible contact avec la surface irrégulière des fibres du matériau conducteur que l'on cherche à raccorder à une alimentation électrique. Ces inconvénients sont encore accentués lorsque le matériau fibreux, généralement souple et très flexible, est de faible épaisseur.It is also not possible to use rigid copper rod type contacts with which it is difficult to control the pressure exerted on the fibrous material, or to shape it. In addition, such bars provide only a slight contact with the uneven surface of the fibers of the conductive material that is sought to connect to a power supply. These disadvantages are further accentuated when the fibrous material, generally flexible and very flexible, is thin.
En outre, dans le cas où il serait nécessaire de donner à la couche de matériau conducteur une forme non plane, par exemple une forme courbe ou plissée, il est également difficile d'obtenir un contact électrique continu sur des longueurs importantes. C'est notamment le cas lorsque le dit matériau est utilisé pour un chauffage par effet Joule, pour lequel le chauffage doit être lé plus homogène possible, donc il convient d'obtenir une distribution de courant dans le tissu la plus homogène possible sur toute la longueur du contact. La résultante de cet effet donnera une transmission de courant la plus homogène possible sur toute la surface du matériau mis en oeuvre entre les deux contacts électriques.In addition, in the case where it would be necessary to give the layer of conductive material a non-planar shape, for example a curved or pleated shape, it is also difficult to obtain a continuous electrical contact over long lengths. This is particularly the case when the said material is used for heating by Joule effect, for which the heating should be as homogeneous as possible, so it is necessary to obtain a distribution of current in the fabric as homogeneous as possible over the entire length of the contact. The resultant of this effect will give a current transmission as homogeneous as possible over the entire surface of the material used between the two electrical contacts.
Un objet de la présente invention est par conséquent de pallier les inconvénients précités en proposant un dispositif permettant de réaliser un contact électrique efficace entre une alimentation électrique en courant continu ou alternatif et une couche d'un matériau conducteur souple majoritairement fibreux, sans endommager le matériau fibreux, ni altérer sa tenue mécanique.An object of the present invention is therefore to overcome the aforementioned drawbacks by proposing a device for making an effective electrical contact between a direct or alternating current power supply and a layer of a flexible, predominantly fibrous conductive material, without damaging the material. fibrous, nor alter its mechanical strength.
Un autre objet de la présente invention est de proposer un dispositif permettant de réaliser une zone de contact électrique quasi continu entre le dit matériau fibreux et l'alimentation électrique.Another object of the present invention is to provide a device for producing a quasi-continuous electrical contact zone between said fibrous material and the power supply.
Selon l'invention ces objectifs sont atteints avec le dispositif selon la revendication 1.According to the invention these objectives are achieved with the device according to
Ainsi la présence de l'adhésif conducteur qui suit parfaitement les irrégularités de la surface du matériau fibreux permet un contact électrique en une multiplicité de points (et ainsi un contact quasi continu) entre le matériau fibreux et le ruban métallique, donc électriquement conducteur, sur toute la zone de recouvrement. La couche d'adhésif permet à la fois de solidariser le ruban métallique avec le matériau fibreux et d'autoriser le passage du courant entre ces deux derniers. L'adhésif peut être constitué majoritairement d'une colle ou résine elle-même conductrice, ou d'une colle ou résine dopée par exemple à l'argent, au cuivre, au graphite... ou encore d'une colle ou d'une résine renfermant des (micro)particules électriquement conductrices.Thus the presence of the conductive adhesive which perfectly follows the irregularities of the surface of the fibrous material allows electrical contact at a multiplicity of points (and thus a quasi-continuous contact) between the fibrous material and the ribbon metallic, and therefore electrically conductive, over the entire overlap area. The adhesive layer makes it possible both to secure the metal ribbon with the fibrous material and to allow the passage of current between these two last. The adhesive may consist mainly of an adhesive or resin itself conductive, or an adhesive or resin doped for example with silver, copper, graphite ... or an adhesive or a resin containing electrically conductive (micro) particles.
De préférence, les zones de recouvrement séparées sont disposées de manière diamétralement opposée, afin d'autoriser le passage du courant électrique sur l'ensemble, ou du moins sur une majeure partie de la couche dudit matériau fibreux.Preferably, the separate overlapping regions are arranged diametrically opposite, to allow the passage of electric current on all, or at least a major part of the layer of said fibrous material.
De manière avantageuse, l'épaisseur totale du dispositif permet son pliage au niveau de la zone recouverte de l'adhésif et du ruban métallique. Ce pliage peut être un plissage, un crénelage, un enroulage de la couche sur elle-même ou sur un support, ou toute autre mise en forme que la souplesse de la couche de matériau fibreux autorise. L'épaisseur de la superposition du ruban métallique et de la couche d'adhésif peut être comprise dans une large gamme allant de 0,001 mm à 5 mm, et plus particulièrement entre 0,05 mm et 2 mm, le matériau fibreux pouvant présenter une épaisseur comprise entre 0,1 mm et 10 mm, de préférence entre 0,4 mm et 5 mm.Advantageously, the total thickness of the device allows its folding at the area covered with the adhesive and the metal ribbon. This folding can be a pleating, a crenellation, a winding of the layer on itself or on a support, or any other shaping that the flexibility of the layer of fibrous material allows. The thickness of the superposition of the metal ribbon and the adhesive layer may be in a wide range from 0.001 mm to 5 mm, and more particularly between 0.05 mm and 2 mm, the fibrous material may have a thickness between 0.1 mm and 10 mm, preferably between 0.4 mm and 5 mm.
L'intensité du courant délivré est fonction de la résistance de contact entre le ruban métallique et le matériau majoritairement fibreux et dépend aussi de la largeur de la zone de recouvrement. Cette largeur peut être comprise entre 0,001 mm (ruban sous forme d'un fil) et 500 mm environ (ruban plan). Elle est importante lorsque ladite résistance de contact ou la résistivité de l'adhésif conducteur utilisé est grande. Cette largeur doit également être importante s'il est nécessaire d'avoir une puissance délivrée dans le matériau fibreux élevée.
Cependant, si le ruban est sous la forme d'un fil, il est nécessaire de multiplier le nombre de raccords avec l'alimentation électrique.The intensity of the current delivered is a function of the contact resistance between the metal ribbon and the predominantly fibrous material and also depends on the width of the overlap zone. This width can be between 0.001 mm (ribbon in the form of a thread) and about 500 mm (flat ribbon). It is important when said contact resistance or the resistivity of the conductive adhesive used is large. This width must also be important if it is necessary to have a power delivered in the high fibrous material.
However, if the ribbon is in the form of a wire, it is necessary to multiply the number of connections with the power supply.
Avec le dispositif selon l'invention, la zone de recouvrement, de par sa structure superposée, permet de rigidifier le matériau fibreux et ainsi les raccords classiques à une alimentation électrique peuvent être utilisés : pinces métalliques, soudures, rivets, vis, etc... sans détériorer le dit matériau. De manière avantageuse, ce raccord peut être en un seul point ou en une multiplicité de points. Un point unique est préféré, pour des raisons techniques et économiques, le ruban métallique ayant pour avantage de distribuer le courant sur toute la longueur de la zone de recouvrement.With the device according to the invention, the overlapping zone, by its superimposed structure, makes it possible to stiffen the fibrous material and thus the conventional connections to a power supply can be used: metal clips, welds, rivets, screws, etc. without damaging said material. Advantageously, this connection can be in a single point or in a multiplicity of points. A single point is preferred, for technical and economic reasons, the metal strip having the advantage of distributing the current over the entire length of the overlap area.
Selon une variante de réalisation du dispositif selon l'invention, entre le matériau majoritairement fibreux et la couche d'adhésif, le dit matériau est enduit d'un vernis conducteur, au moins dans ladite zone de recouvrement. Le rôle de ce vernis est principalement de rigidifier le contact, d'améliorer le contact interfibres, et donc de diminuer la résistance électrique de contact tout en lissant la surface du matériau fibreux. Ainsi les contacts mécaniques et électriques entre ledit matériau fibreux et l'adhésif sont améliorés, et par même les contacts entre le matériau fibreux et l'alimentation électrique.According to an alternative embodiment of the device according to the invention, between the predominantly fibrous material and the adhesive layer, said material is coated with a conductive varnish, at least in said overlap zone. The role of this varnish is mainly to stiffen the contact, improve interfiber contact, and thus reduce the electrical contact resistance while smoothing the surface of the fibrous material. Thus the mechanical and electrical contacts between said fibrous material and the adhesive are improved, and by the same contacts between the fibrous material and the power supply.
Selon une autre variante du dispositif selon l'invention, ce dispositif peut être noyé dans un matériau isolant électrique et/ou thermique. Dans ce cas soit le matériau isolant est pourvu d'au moins une perforation permettant un raccordement à l'alimentation électrique, par exemple par vissage ou rivetage, cosse électrique ou fiche de type "banane", soit le dispositif est noyé avec son raccord dans le matériau isolant.According to another variant of the device according to the invention, this device can be embedded in an electrical and / or thermal insulating material. In this case, the insulating material is provided with at least one perforation allowing a connection to the power supply, for example by screwing or riveting, electric lug or "banana" type plug, or the device is embedded with its connection in the insulating material.
De manière avantageuse, le ruban métallique présente une résistivité comprise approximativement entre 10-8 et 10-4 Ω.m, de préférence comprise entre 10-7 et 10-4 Ω.m. Dans tous les cas la résistance de ce ruban doit être inférieure à la résistance de contact sur le matériau fibreux. Ledit ruban peut par exemple être à base de cuivre, de zinc, d'aluminium, d'argent, de nickel, de fer, de nickel-chrome, de plomb, ou de tout autre métal approprié pour ses propriétés à la fois électriques, thermiques et mécaniques ou à base d'un alliage de ces métaux. Le ruban métallique peut également être remplacé par un matériau polymère conducteur électrique.Advantageously, the metal strip has a resistivity approximately between 10 -8 and 10 -4 Ω.m, preferably between 10 -7 and 10 -4 Ω.m. In all cases the resistance of this ribbon must be lower than the contact resistance on the fibrous material. Said ribbon may for example be based on copper, zinc, aluminum, silver, nickel, iron, nickel-chromium, lead, or any other metal suitable for its electrical properties, thermal and mechanical or based on an alloy of these metals. The metal strip may also be replaced by an electrically conductive polymer material.
Pour un meilleur transfert électrique entre l'alimentation électrique et le matériau fibreux, l'adhésif et le vernis doivent présenter une résistivité globalement inférieure à celle dudit matériau fibreux. Ils peuvent renfermer par exemple des (micro)particules conductrices qui assurent de très nombreux points de contact de résistance électrique très faible.For a better electrical transfer between the power supply and the fibrous material, the adhesive and the varnish must have a resistivity generally lower than that of said fibrous material. They may contain for example conductive (micro) particles that provide very many points of contact of very low electrical resistance.
Ledit matériau majoritairement fibreux utilisable dans la présente invention peut être choisi parmi les matériaux en carbone ou en carbone activé sous la forme d'un tissu, d'un feutre ou d'un agglomérat de fibres. Leur résistivité est généralement de l'ordre de 10-4 à 10-1 Ω.m.Said predominantly fibrous material that can be used in the present invention can be chosen from carbon or activated carbon materials in the form of a fabric, a felt or a fiber agglomerate. Their resistivity is generally of the order of 10 -4 to 10 -1 Ω.m.
Ce matériau majoritairement fibreux peut être renforcé d'un maillage, d'un grillage ou d'un réseau en un autre matériau de renforcement mécanique non conducteur. Ledit matériau de renforcement peut être par exemple du polypropylène, des fibres cellulosiques, des fibres de verre ou de quartz.This predominantly fibrous material may be reinforced with a mesh, a grid or a network of another material of non-conductive mechanical reinforcement. Said reinforcing material may for example be polypropylene, cellulosic fibers, glass or quartz fibers.
Une utilisation intéressante du dispositif selon la présente invention est lors du chauffage électrique du matériau majoritairement fibreux par effet Joule. Le matériau fibreux électriquement conducteur sert alors d'élément chauffant, et peut être employé par exemple pour des panneaux radiants, des éléments intérieurs de fours, de cheminées, de pots d'échappement, etc....An interesting use of the device according to the present invention is during the electric heating of the predominantly fibrous material by Joule effect. The electrically conductive fibrous material then serves as a heating element, and can be used for example for panels radiants, interior elements of ovens, fireplaces, exhausts, etc.
Si le matériau fibreux est également un matériau adsorbant (à base de carbone activé par exemple) et qu'il a préalablement adsorbé des molécules (par exemple des molécules organiques odorantes et/ou polluantes), le chauffage de celui-ci permet le départ par désorption de ces molécules adsorbées, et ainsi la régénération dudit matériau. Il est aussi possible d'utiliser le dispositif pour simplement mesurer la résistance ou la résistivité électrique de ce type de matériau fibreux. Une autre utilisation du dispositif selon l'invention concerne le déstockage de molécules combustibles préalablement stockées au sein du matériau fibreux.If the fibrous material is also an adsorbent material (based on activated carbon for example) and has previously adsorbed molecules (for example organic odor and / or pollutant molecules), the heating thereof allows the departure by desorption of these adsorbed molecules, and thus the regeneration of said material. It is also possible to use the device to simply measure the resistance or electrical resistivity of this type of fibrous material. Another use of the device according to the invention relates to the destocking of fuel molecules previously stored within the fibrous material.
Le dispositif selon la présente invention peut également être utilisé pour la polarisation d'une surface fibreuse, par exemple pour la captation électrostatique de particules et de poussières.The device according to the present invention can also be used for the polarization of a fibrous surface, for example for the electrostatic capture of particles and dust.
Le matériau fibreux muni du dispositif selon l'invention peut aussi être utilisé comme électrode dans un bain d'électrolyse.The fibrous material provided with the device according to the invention can also be used as an electrode in an electrolysis bath.
La présente invention va maintenant être mieux explicitée par des exemples non limitatifs se référant à des figures illustratives sur lesquelles tous les éléments ont été agrandis pour une meilleure compréhension. Sur celles-ci :
- la
figure 1 montre, selon une vue éclatée, la superposition des couches formant le dispositif de l'invention, - la
figure 2 montre en coupe la superposition des couches du dispositif au niveau de la zone de recouvrement, - la
figure 3 montre en perspective un exemple d'arrangement par pliage du dispositif, - la
figure 4 montre en perspective une variante du dispositif de l'invention noyé dans un matériau isolant, - les
figures 5a et 5b présentent en coupe deux exemples de raccordement du dispositif à l'alimentation électrique, - la
figure 6 montre en perspective un matériau fibreux renforcé et - la
figure 7 montre une liaison entre deux modules de matériau fibreux par l'intermédiaire d'un dispositif supplémentaire selon la présente invention.
- the
figure 1 shows, in an exploded view, the superposition of the layers forming the device of the invention, - the
figure 2 shows in section the superposition of the layers of the device at the level of the overlap zone, - the
figure 3 shows in perspective an example of arrangement by folding the device, - the
figure 4 shows in perspective a variant of the device of the invention embedded in an insulating material, - the
Figures 5a and 5b show in section two examples of connection of the device to the power supply, - the
figure 6 shows in perspective a reinforced fibrous material and - the
figure 7 shows a connection between two modules of fibrous material via an additional device according to the present invention.
Selon l'exemple présenté à la
On peut utiliser comme couple ruban métallique/adhésif par exemple un ruban métallique du commerce, utilisé pour le blindage de connecteurs et de câbles contre les interférences électromagnétiques, la mise à la terre et le drainage de charges électrostatiques. Ici cet ensemble ruban métallique/adhésif a pour rôle principal d'assurer la transmission du courant entre l'alimentation électriques(5) et le matériau fibreux (1).As a metal ribbon / adhesive pair, for example, a commercially available metal strip used for shielding connectors and cables against electromagnetic interference, grounding and drainage of electrostatic charges can be used. Here, this metal ribbon / adhesive assembly has the main role of ensuring the transmission of the current between the power supply (5) and the fibrous material (1).
L'adhésif est une colle à base acrylique renfermant des microparticules (6) conductrices, comme présenté en coupe sur la
Il est à noter que le dispositif selon l'invention peut être doublé, c'est à dire être prévu sur les deux faces du matériau fibreux (1), comme schématisé en pointillés sur la
Dans le cas où le tissu carboné (1) servirait de matériau adsorbant (par exemple si le matériau fibreux est un tissu ou un feutre à base de carbone activé) il est intéressant d'avoir une surface d'échange la plus importante possible avec un encombrement minimum. Il peut donc être avantageux par exemple d'enrouler le dit matériau sur lui-même ou encore de le plier ou de le plisser. La
Le raccord (10) avec l'alimentation électrique (5) est ici réalisé en un seul point, au moyen d'une soudure faite à la surface du ruban métallique (4), à chacune des extrémités dudit cylindre (7), dont seule une extrémité est représentée sur la
La
Ce type d'assemblage permet notamment d'enrober et de protéger le raccordement à l'alimentation électrique. Les
Le matériau fibreux (1), généralement souple et très flexible, peut être renforcé par colaminage avec un matériau plus résistant mécaniquement (18). Une telle variante est présentée à la
Sur la
Les arrangements selon ces deux dernières variantes peuvent être présents simultanément ou non.The arrangements according to these last two variants may be present simultaneously or not.
Le dispositif selon la présente invention peut également servir de contact électrique entre deux modules de matériaux fibreux (1a et 1b) identiques ou différents. Un exemple est présenté schématiquement à la
Exemple de réalisation :
- On utilise un dispositif tel que présenté à la
figure 1 , dans lesquels les constituants ont les caractéristiques suivantes :- ruban métallique (4) en cuivre de résistivité 1,7 10-8 Ω.m à 20°C de largeur l1 = l2 = 19 mm et d'épaisseur 0,035 mm
- adhésif (3) (à base acrylique contenant des particules conductrices) de résistance 0,005 Ω et d'épaisseur 0,031mm,
- matériau fibreux (1) en tissu de carbone activé de résistivité 16 10-4 Ω.m à 20°C et d'épaisseur 0,5 mm
- We use a device as presented to the
figure 1 in which the constituents have the following characteristics:- metallic ribbon (4) of resistivity copper 1.7 10 -8 Ω.m at 20 ° C width l 1 = l 2 = 19 mm and thickness 0.035 mm
- adhesive (3) (acrylic based containing conductive particles) with a resistance of 0.005 Ω and a thickness of 0.031 mm,
- fibrous material (1) made of activated carbon fabric having a resistivity of 16 10 -4 Ω.m at 20 ° C and a thickness of 0.5 mm
Claims (18)
- Device comprising a layer of electrically conductive flexible material (1) which is principally fibrous for electrical contact between an electrical supply (5) and said flexible material layer, characterized in that the material (1) is covered, over at least two separated overlapping regions (Z1, Z2), with a superposed layer of an electrically conductive adhesive (3) and a metallic strip (4).
- Device for electrical contact according to claim 1, characterized in that its total thickness permits its bending at the overlapping zone (Z1, Z2) of the adhesive (3) and the metallic strip (4).
- Device for electrical contact according to any one of the preceding claims, characterized in that between the principally fibrous material (1) and the adhesive layer (3), said material (1) is coated with a conductive varnish (17), at least in said overlapping region (Z1, Z2).
- Device for electrical contact according to any one of the preceding claims, characterized in that the metallic strip (4) has a resistivity comprised approximately between 10-8 and 10-4 Ω.m, preferably between 10-7 and 10-4 Ω.m.
- Device for electrical contact according to any one of the preceding claims, characterized in that the metallic strip (4) is of copper, zinc, aluminum, silver, nickel, chromium, iron, lead base or an alloy of these metals.
- Device for electrical contact according to any one of the preceding claims, characterized in that it is embedded in an electrically and/or thermally insulating material (11).
- Device for electrical contact according to claim 6, characterized in that the insulating material (11) is provided with at least one perforation permitting connection to the electrical supply (5), by screwing or riveting.
- Device for electrical contact according to claim 6, characterized in that it is embedded with its connection in the insulating material (11).
- Device for electrical contact according to any one of the preceding claims, characterized in that the principally fibrous material (1) can be reinforced with a mesh, a grill or a network of another mechanically reinforcing non-conductive material (18).
- Device for electrical contact according to claim 9, characterized in that said reinforcing material (18) is polypropylene, cellulosic fibers, glass or quartz fibers.
- Device for electrical contact according to any one of the preceding claims, characterized in that said principally fibrous material (1) is selected from a cloth, a felt or an agglomerate of fibers (2), of carbon or activated carbon.
- The use of device according to any one of the preceding claims for electrical heating of principally fibrous material by the Joule effect.
- The use according to claim 12 for radiant panels.
- The use according to claim 12 for internal elements of ovens, chimneys or exhaust pipes.
- The use according to claim 12 for the regeneration of the fibrous material (1).
- The use according to claim 12 for releasing combustible molecules previously stored within the fibrous material (1).
- The use of the device according to any one of claims 1 to 11, for the polarization of a fibrous surface.
- The use of the device according to any one of claims 1 to 11, for a fibrous material serving as an electrode in an electrolytic bath.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0100752A FR2819942B1 (en) | 2001-01-19 | 2001-01-19 | DEVICE FOR ELECTRICAL CONTACT FOR FIBROUS MATERIALS AND ITS USE FOR JOUL EFFECT HEATING |
| FR0100752 | 2001-01-19 | ||
| PCT/FR2002/000196 WO2002058194A1 (en) | 2001-01-19 | 2002-01-18 | Device for electric contact for textile material and use thereof for joule heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1352449A1 EP1352449A1 (en) | 2003-10-15 |
| EP1352449B1 true EP1352449B1 (en) | 2009-10-21 |
Family
ID=8859036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02712001A Expired - Lifetime EP1352449B1 (en) | 2001-01-19 | 2002-01-18 | Device for electric contact for textile material and use thereof for joule heating |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6891107B2 (en) |
| EP (1) | EP1352449B1 (en) |
| JP (1) | JP2004523861A (en) |
| AT (1) | ATE446597T1 (en) |
| BR (1) | BR0206287A (en) |
| CA (1) | CA2434598C (en) |
| DE (1) | DE60234080D1 (en) |
| FR (1) | FR2819942B1 (en) |
| WO (1) | WO2002058194A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7840272B2 (en) * | 2005-06-03 | 2010-11-23 | Medrelief Inc. | Methods for modulating osteochondral development using bioelectrical stimulation |
| JP6749698B2 (en) * | 2015-09-04 | 2020-09-02 | 国立研究開発法人科学技術振興機構 | Connector board, sensor system and wearable sensor system |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU502325B2 (en) * | 1975-07-29 | 1979-07-19 | Zirconal Processes Ltd. | The modular construction of furnaces |
| US4442139A (en) * | 1979-12-11 | 1984-04-10 | Raychem Corporation | Elements comprising fibrous materials |
| US4367585A (en) * | 1979-12-26 | 1983-01-11 | Western Electric Company, Inc. | Methods for the termination and connectorization of multi-conductor flat cable |
| US4918814A (en) * | 1984-12-20 | 1990-04-24 | Redmond John P | Process of making a layered elastomeric connector |
| US4660908A (en) * | 1985-08-05 | 1987-04-28 | Ameron, Inc. | Grounding saddle |
| FR2588127A1 (en) * | 1985-10-02 | 1987-04-03 | Pernot Roger | Earthing glove |
| US4733059A (en) * | 1987-06-15 | 1988-03-22 | Thermon Manufacturing Company | Elongated parallel, constant wattage heating cable |
| DE9013380U1 (en) * | 1990-09-21 | 1990-11-29 | SEKURIT SAINT-GOBAIN Deutschland GmbH & Co. KG, 52066 Aachen | Power connection element for a heated car window |
| FR2692426B1 (en) * | 1992-06-11 | 1994-08-26 | Seb Sa | Heating plate for heating container, in particular for kettle. |
| US6734363B1 (en) * | 1992-07-07 | 2004-05-11 | International Business Machines Corporation | Lightweight electronic equipment conductor with coolant permeable support |
| US6080267A (en) * | 1994-04-26 | 2000-06-27 | Lithium Technology Corporation | Method of electroconductive fastening of current collectors and terminals in electrochemical devices |
| US6414286B2 (en) * | 1999-04-22 | 2002-07-02 | Malden Mills Industries, Inc. | Electric heating/warming fibrous articles |
-
2001
- 2001-01-19 FR FR0100752A patent/FR2819942B1/en not_active Expired - Fee Related
-
2002
- 2002-01-18 BR BR0206287-9A patent/BR0206287A/en not_active Application Discontinuation
- 2002-01-18 US US10/250,944 patent/US6891107B2/en not_active Expired - Fee Related
- 2002-01-18 DE DE60234080T patent/DE60234080D1/en not_active Expired - Lifetime
- 2002-01-18 CA CA2434598A patent/CA2434598C/en not_active Expired - Fee Related
- 2002-01-18 JP JP2002558372A patent/JP2004523861A/en active Pending
- 2002-01-18 EP EP02712001A patent/EP1352449B1/en not_active Expired - Lifetime
- 2002-01-18 WO PCT/FR2002/000196 patent/WO2002058194A1/en active Application Filing
- 2002-01-18 AT AT02712001T patent/ATE446597T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CA2434598C (en) | 2010-12-21 |
| US6891107B2 (en) | 2005-05-10 |
| BR0206287A (en) | 2004-01-13 |
| FR2819942B1 (en) | 2003-05-30 |
| ATE446597T1 (en) | 2009-11-15 |
| JP2004523861A (en) | 2004-08-05 |
| WO2002058194A1 (en) | 2002-07-25 |
| DE60234080D1 (en) | 2009-12-03 |
| EP1352449A1 (en) | 2003-10-15 |
| FR2819942A1 (en) | 2002-07-26 |
| CA2434598A1 (en) | 2002-07-25 |
| US20040053518A1 (en) | 2004-03-18 |
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