C10M 105/76 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un composé organique non macromoléculaire contenant du silicium
B21B 27/10 - Lubrification, refroidissement ou chauffage des cylindres extérieurement
B21B 3/00 - Laminage des matériaux faits d'alliages particuliers dans la mesure où la nature de l'alliage exige ou permet l'emploi de méthodes ou de séquences particulières
B21B 45/02 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs pour lubrifier, refroidir ou nettoyer
H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
2.
VOLATILE METHYL SILOXANE LUBRICANT FOR LAMINATION OF LITHIUM SHEETS INTO LITHIUM THIN FILMS
A volatile methyl siloxane is used as a lubricant in the process of laminating lithium or lithium alloy sheets into lithium or lithium alloy films. Polydimethylsiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, and dodecamethylhexasiloxane are each shown to be highly spreadable and compressible, to provide adequate lubrication for laminating an extruded lithium sheet into a thin lithium film, and to readily evaporate therefrom after lamination. Advantageously, the volatile methyl siloxane lubricant cannot therefore contaminate an electrochemical cell made from the lithium film.
C10M 105/76 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un composé organique non macromoléculaire contenant du silicium
C10M 107/50 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un composé macromoléculaire contenant du silicium
3.
ELECTROCHEMICAL CELL OR BATTERY WITH REDUCED IMPEDANCE AND METHOD FOR PRODUCING SAME
The invention disclosed is a method for decreasing the internal resistance or impedance of a battery or electrochemical cell is described which comprises the step of discharging the battery or cell until it reaches an overdischarge condition and maintaining the battery or cell in the overdischarge condition for a period of time sufficient to effect a diminution of the internal resistance or impedance of a battery or electrochemical cell; and a battery or electrochemical cell having a reduced impedance.
An electrochemically active material is disclosed in which the particles of electrochemically active material have a zeta potential of less than 25 mV in absolute value (-25 m V to 0 mV; 0 mV to 25 mV) as measured in the medium (water and/or organic solvent) in which the particles are dispersed.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/13 - Électrodes pour accumulateurs à électrolyte non aqueux, p. ex. pour accumulateurs au lithiumLeurs procédés de fabrication
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
5.
Electrode material for lithium electrochemical cells
An electrochemically active material is disclosed in which the particles of electrochemically active material have a zeta potential of less than 25 mV in absolute value (−25 mV to 0 mV; 0 mV to 25 mV) as measured in the medium (water and/or organic solvent) in which the particles are dispersed.
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 10/0565 - Matériaux polymères, p. ex. du type gel ou du type solide
H01M 4/1391 - Procédés de fabrication d'électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
6.
THIN FILM ELECTROCHEMICAL CELL FOR LITHIUM POLYMER BATTERIES AND MANUFACTURING METHOD THEREFOR
An electrochemical cell sub-assembly and a method for manufacturing same. The electrochemical cell sub-assembly includes a current collector sheet having a pair of opposite surfaces and a pair of opposite edges, each surface being coated with a respective layer of electrode material. A layer of polymer electrolyte envelopes both layers of electrode material and one of the pair of edges of the current collector sheet, thereby encapsulating the one edge of the current collector sheet while leaving exposed the other edge of the current collector sheet.
H01M 10/0585 - Structure ou fabrication d'accumulateurs ayant uniquement des éléments de structure plats, c.-à-d. des électrodes positives plates, des électrodes négatives plates et des séparateurs plats
H01M 6/18 - Éléments avec électrolytes non aqueux avec électrolyte solide
7.
Current collecting terminal with PTC layer for electrochemical cells
An electrochemical cell battery having current collecting terminals acting as security device. The current collecting terminals utilize layers of PTC materials strategically positioned whereby if a temperature of an electrochemical cell rises above the transition temperature of the layer of PTC material, electrical current is prevented to flow between electrochemical cells by the layer of PTC material.
H01M 10/637 - Systèmes de commande caractérisés par l’emploi de dispositifs sensibles à la température, p. ex. dispositifs NTC, PTC ou bimétalSystèmes de commande caractérisés par la commande du courant interne circulant à travers la batterie, p. ex. par commutation
H01M 10/613 - Refroidissement ou maintien du froid
A battery pack for an electric or hybrid vehicle having battery connectors for connecting batteries in series and a battery connector are disclosed that reduces the risks of potential electric shocks during assembly, servicing and in emergency situation. The battery connector includes an interrupter having disconnect capabilities in the event of the vehicle being involved in a collision.
B60L 3/04 - Coupure de l'alimentation en énergie en cas de fausse manœuvre
H01H 35/14 - Interrupteurs actionnés par changement de l'accélération, p. ex. par choc ou vibration, interrupteur à inertie
H01R 11/01 - Éléments de connexion individuels assurant plusieurs emplacements de connexion espacés pour des organes conducteurs qui sont ou qui peuvent être interconnectés de cette façon, p. ex. pièces d'extrémité pour fils ou câbles supportées par le fil ou par le câble et possédant des moyens pour faciliter la connexion électrique avec quelqu'autre fil, borne, ou organe conducteur, répartiteurs caractérisés par la forme ou par la disposition de l'interconnexion entre leurs emplacements de connexion
A battery pack having battery connectors for connecting batteries in series and a battery connector are disclosed that reduce the risks of potential electric shocks during assembly and servicing of a battery pack.
An electrochemical cell battery is disclosed having current collecting terminals acting as security device. The battery includes a plurality of electrochemical cells connected in series or parallel. Each electrochemical cell has a current collecting terminal connecting the positive current collectors together and a current collecting terminal connecting the negative current collectors together. The current collecting terminals each have a folded extension arm for electrically connecting two adjacent electrochemical cells together. The folded extension arms have a shape memory characteristic and are electrically connected together via a welding metal having a fusion temperature Tf of less than 180°C whereby if a temperature of an electrochemical cells rises above the fusion temperature Tf of the welding metal, the welded connection melts and the folded extension arms of the current collecting terminals spring back to their initial shape thereby severing the electrical connection between the electrochemical cells.
H01H 37/60 - Moyens pour produire une action brusque
H01H 37/76 - Élément de contact actionné par fusion d'une matière fusible, actionné par combustion d'une matière combustible ou par explosion d'une matière explosive
A battery pack having battery connectors for connecting batteries in series and a battery connector are disclosed that reduce the risks of potential electric shocks during assembly and servicing of a battery pack.
A battery pack for an electric or hybrid vehicle having battery connectors for connecting batteries in series and a battery connector are disclosed that reduces the risks of potential electric shocks during assembly, servicing and in emergency situation. The battery connector includes an interrupter having disconnect capabilities in the event of the vehicle being involved in a collision.
f of the welding metal, the welded connection melts and the folded extension arms of the current collecting terminals spring back to their initial shape thereby severing the electrical connection between the electrochemical cells.
H01M 2/00 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES - Détails de construction ou procédés de fabrication des parties non actives
H01M 10/50 - Chauffage, refroidissement ou régulation de la température (commande de température en général G05D 23/00)
14.
CURRENT COLLECTING TERMINAL FOR ELECTROCHEMICAL CELLS
An electrochemical cell battery is disclosed having current collecting terminals acting as security device. The battery includes a plurality of electrochemical cells connected in series or parallel. Each electrochemical cell has a current collecting terminal connecting the positive current collectors together and a current collecting terminal connecting the negative current collectors together. The current collecting terminals each have a folded extension arm for electrically connecting two adjacent electrochemical cells together. The folded extension arms have a shape memory characteristic and are electrically connected together via a welding metal having a fusion temperature Tf of less than 180°C whereby if a temperature of an electrochemical cells rises above the fusion temperature Tf of the welding metal, the welded connection melts and the folded extension arms of the current collecting terminals spring back to their initial shape thereby severing the electrical connection between the electrochemical cells.
H01H 37/60 - Moyens pour produire une action brusque
H01H 37/76 - Élément de contact actionné par fusion d'une matière fusible, actionné par combustion d'une matière combustible ou par explosion d'une matière explosive
H01M 2/34 - Connexions conductrices du courant pour les éléments avec des moyens pour empêcher un usage ou une décharge indésirables
A battery pack for an electric or hybrid vehicle having battery connectors for connecting batteries in series and a battery connector are disclosed that reduces the risks of potential electric shocks during assembly, servicing and in emergency situation. The battery connector includes an interrupter having disconnect capabilities in the event of the vehicle being involved in a collision.
H01H 39/00 - Dispositifs de commutation actionnés par une explosion produite à l'intérieur du dispositif et amorcée par un courant électrique
B60L 11/18 - utilisant de l'énergie fournie par des piles primaires, des piles secondaires ou des piles à combustibles
H01H 35/14 - Interrupteurs actionnés par changement de l'accélération, p. ex. par choc ou vibration, interrupteur à inertie
H01M 2/00 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES - Détails de construction ou procédés de fabrication des parties non actives
H01R 11/01 - Éléments de connexion individuels assurant plusieurs emplacements de connexion espacés pour des organes conducteurs qui sont ou qui peuvent être interconnectés de cette façon, p. ex. pièces d'extrémité pour fils ou câbles supportées par le fil ou par le câble et possédant des moyens pour faciliter la connexion électrique avec quelqu'autre fil, borne, ou organe conducteur, répartiteurs caractérisés par la forme ou par la disposition de l'interconnexion entre leurs emplacements de connexion
A battery pack having battery connectors for connecting batteries in series and a battery connector are disclosed that reduce the risks of potential electric shocks during assembly and servicing of a battery pack.
An electrochemical cell battery is disclosed having current collecting terminals acting as security device. The battery includes a plurality of electrochemical cells connected in series or parallel; each electrochemical cell having a current collecting terminal connecting the positive current collectors together and a current collecting terminal connecting the negative current collectors together; the current collecting terminals each having a folded extension arm for electrically connecting two adjacent electrochemical cells together. The current collecting terminals utilize layers of PTC materials strategically positioned whereby if a temperature of an electrochemical cell rises above the transition temperature of the layer of PTC material, electrical current is prevented to flow between electrochemical cells by the layer of PTC material.
18.
CURRENT COLLECTING TERMINAL FOR ELECTROCHEMICAL CELLS
An electrochemical cell battery is disclosed having current collecting terminals acting as security device. The battery includes a plurality of electrochemical cells connected in series or parallel; each electrochemical cell having a current collecting terminal connecting the positive current collectors together and a current collecting terminal connecting the negative current collectors together; the current collecting terminals each having a folded extension arm for electrically connecting two adjacent electrochemical cells together. The current collecting terminals utilize layers of PTC materials strategically positioned whereby if a temperature of an electrochemical cell rises above the transition temperature of the layer of PTC material, electrical current is prevented to flow between electrochemical cells by the layer of PTC material.
A method for making a battery is disclosed which comprises providing a plurality of Electrochemical Cell (EC) bundles; providing a current collecting terminal having first and second ends; electrically connecting the projections of the sheet like electrodes extending from one end a first EC bundle together via the first end of the current collecting terminal; electrically connecting the projections of the sheet like electrodes extending from one end of a second EC bundle together via the second end of the current collecting terminal such that the first and second EC bundles are mechanically and electrically connected together and form a string of at least two EC bundles; and folding the string of at least two EC bundles by bending the current collecting terminal connecting the at least two EC bundles together such that the first and second EC bundles are positioned in a side by side relationship.
JOHNSON MATTHEY PUBLIC LIMITED COMPANY (Royaume‑Uni)
Inventeur(s)
Geoffroy, Denis
Liang, Guoxian
Gauthier, Michel
Lahrs, Thorsten
Ravet, Nathalie
Parent, Michel
Vallee, Alain
Leblanc, Patrick
Cotton, Frederic
Abrégé
The invention relates to a material C-AxM(XO4)y that consists of particles of a compound of the formula AxM(XO4)y, wherein said particles comprise a carbon deposit deposited by means of pyrolysis on at least a portion of the surface thereof, and where: A is Li alone or partially replaced by at most 10 atomic % of Na or K; M is Fe(II), or ?n(II), or mixtures thereof alone or partially replaced by at most 30 atomic % of one or more metals selected from Mn, Ni and Co and/or at most 5 % of Fe(III); XO4 is PO4 alone or partially replaced by at most 10 molar % of at least one group selected from SO4, Si04 and MoO4; and where said material has a calcium impurity content of lower than about 1000 ppm.
H01M 4/136 - Électrodes à base de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFy
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
21.
ELECTRODES AND ELECTRODE MATERIAL FOR LITHIUM ELECTROCHEMICAL CELLS
An electrode and an electrode material for lithium electrochemical cells are disclosed. The electrode material is in powder form and has a particle size distribution wherein the measured particle size distribution of the electrode material has a median size D5o ranging from 1.5μm and 3μm, a D10 ≥ 0.5μm, a D90 ≤10.0 μm, and a calculated ratio (D90 / D 10) / D50 ≥ 3.0 which is indicative of a peak of the measured particle size distribution on the left of the median D50 which improves the loading and energy density of the electrode produced with this electrode material powder.
An electrode and an electrode material for lithium electrochemical cells are disclosed. The electrode material is in powder form and has a particle size distribution wherein the measured particle size distribution of the electrode material has a me-dian size D5o ranging from 1.5µm and 3µm, a D10 >= 0.5µm, a D90 <=10.0 µm, and a calculated ratio (D90 / D10) / D50 >= 3.0 which is indicative of a peak of the measured particle size distribution on the left of the median D50 which improves the loading and energy density of the electrode produced with this electrode material powder.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
H01M 4/52 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
24.
PROCESS FOR MAKING ELECTRODES FOR LITHIUM BASED ELECTROCHEMICAL CELLS
A process for making an electrode sheet for lithium electrochemical cells is disclosed. The process comprises the steps of : a) admixing a polyether polymer or copolymer soluble in water, at least one lithium salt, at least one electrochemically active material and water to form a water-based solution/suspension containing by weight at least 20% active electrode material, at least 5 % of a polyether polymer or copolymer, and at least 1.5 % lithium salt; b) coating the water-based solution/suspension in the form of an electrode thin film onto an electrode support; and, c) drying the electrode thin film to obtain an electrode thin sheet having less than 1000ppm of residual water. The electrode thin sheet thereby formed has less than 10% porosity after drying. The drying step is preferably carried out through a dryer/oven tunnel having incremental drying zones.
A process for making an electrode sheet for lithium electrochemical cells is disclosed. The process comprises the steps of : a) admixing a polyether polymer or copolymer soluble in water, at least one lithium salt, at least one electrochemically active material and water to form a water-based solution/suspension containing by weight at least 20% active electrode material, at least 5 % of a polyether polymer or copolymer, and at least 1.5 % lithium salt; b) coating the water-based solution/suspension in the form of an electrode thin film onto an electrode support; and, c) drying the electrode thin film to obtain an electrode thin sheet having less than 1000ppm of residual water. The electrode thin sheet thereby formed has less than 10% porosity after drying. The drying step is preferably carried out through a dryer/oven tunnel having incremental drying zones.
A process for making an electrode sheet for lithium electrochemical cells is disclosed. The process comprises the steps of: a) admixing a polyether polymer or copolymer soluble in water, at least one lithium salt, at least one electrochemically active material, water and an organic solvent miscible with water in a water/organic solvent ratio of a maximum of 50% organic solvent by volume to form a water-based solution/suspension containing by weight at least 20% active electrode material, at least 5% of a polyether polymer or copolymer, and at least 1.5% lithium salt; b) coating the water-based solution/suspension in the form of an electrode thin film onto an electrode support; and, c) drying the electrode thin film to obtain an electrode thin sheet having less than 1000 ppm of residual water.
B05D 5/12 - Procédés pour appliquer des liquides ou d'autres matériaux fluides aux surfaces pour obtenir des effets, finis ou des structures de surface particuliers pour obtenir un revêtement ayant des propriétés électriques spécifiques
27.
Process for making electrodes for lithium based electrochemical cells
A process for making an electrode sheet for a solid lithium electrochemical cells is disclosed. The process comprises the steps of: a) admixing a polyether polymer or copolymer, at least one lithium salt, at least one electrochemically active material and purified water to form an aqueous solution/suspension containing by weight at least 40% purified water, at least 20% active electrode material, up to 10% electrically conductive material, at least 5% polyether polymer or copolymer, and at least 1.5% lithium salt; b) coating the aqueous solution/suspension in the form of an electrode thin film onto an electrode support; and, c) evaporating the water from the electrode thin film to obtain an electrode sheet having less than 1000 ppm of residual water. The evaporation step is preferably carried out through a dryer/oven tunnel having incremental drying zones.
B05D 3/02 - Traitement préalable des surfaces sur lesquelles des liquides ou d'autres matériaux fluides doivent être appliquésTraitement ultérieur des revêtements appliqués, p. ex. traitement intermédiaire d'un revêtement déjà appliqué, pour préparer les applications ultérieures de liquides ou d'autres matériaux fluides par cuisson
A solid polymer electrolyte for a battery is disclosed. The solid polymer electrolyte includes a first polymer capable of solvating a lithium salt, a lithium salt, and a second polymer which is at least partially miscible with the first polymer or rendered at least partially miscible with the first polymer; at least a portion of the second polymer being crystalline or vitreous at the internal operating temperature of the battery.
A solid polymer electrolyte for a battery is disclosed. The solid polymer electrolyte includes a first polymer capable of solvating a lithium salt, a lithium salt, and a second polymer which is at least partially miscible with the first polymer or rendered at least partially miscible with the first polymer; at least a portion ofjhe second polymer being crystalline or vitreous at the internal operating temperature of the battery.
The invention provides a current collecting terminal for use in an electrochemical battery formed from a plurality of Electrochemical (EC) bundles. The current collecting terminal has a first end and a second end, and comprises a first conductive component and a second conductive component for electrically connecting a pair of RC bundles together. At the first end of the current collecting terminal, the first conductive component and the second conductive component each overlap a main face of respective sheet-like current collecting elements of a first EC bundle. At the second end, the first conductive component and the second conductive component each overlap a main face of respective sheet-like current collecting elements of a second EC bundle. The first conductive component and the second conductive component are both in electrical communication with the first EC bundle and the second EC bundle.
H01M 50/529 - Connexions entre éléments à travers des cloisons, p. ex. dans un bac de batterie
H01M 50/541 - Connexion de plusieurs conducteurs ou languettes d’électrodes empilées en forme de plaque, p. ex. barrettes ou ponts de pôles d’électrode pour accumulateurs au plomb
An apparatus for monitoring a thickness of a film in motion. The apparatus comprises a roller for receiving and supporting the film in motion, the roller being adapted to rotate about an axis of rotation. The apparatus also comprises a position detector for detecting when the roller is in a specific angular position as the roller rotates about the axis of rotation. The apparatus further comprises a measurement unit aligned with a specific portion of the roller and coupled to the position detector. The measurement unit is responsive to a detection of the roller being in the specific angular position to measure the thickness of the film.
G01L 5/04 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour la mesure de la tension dans les éléments flexibles, p. ex. dans les cordages, les câbles, les fils métalliques, les filaments, les courroies ou les bandes
32.
METHOD AND APPARATUS FOR MEASURING A THICKNESS OF A THIN FILM IN MOTION
An apparatus for monitoring a thickness of a film in motion. The apparatus comprises a roller for receiving and supporting the film in motion, the roller being adapted to rotate about an axis of rotation. The apparatus also comprises a position detector for detecting when the roller is in a specific angular position as the roiler rotates about the axis of rotation. The apparatus further comprises a measurement unit aligned with a specific portion of the roller and coupled to the position detector. The measurement unit is responsive to a detection of the roller being in the specific angular position to measure the thickness of the film.
G01B 21/08 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer la longueur, la largeur ou l'épaisseur pour mesurer l'épaisseur
G01B 11/06 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la longueur, la largeur ou l'épaisseur pour mesurer l'épaisseur
An electrochemical cell sub-assembly and a method for manufacturing same. The electrochemical cell sub-assembly includes a current collector sheet having a pair of opposite surfaces and a pair of opposite edges, each surface being coated with a respective layer of electrode material. A layer of polymer electrolyte envelopes both layers of electrode material and one of the pair of edges of the current collector sheet, thereby encapsulating the one edge of the current collector sheet white leaving exposed the other edge of the current collector sheet.
An electrochemical cell sub-assembly and a method for manufacturing same. The electrochemical cell sub-assembly includes a current collector sheet having a pair of opposite surfaces and a pair of opposite edges, each surface being coated with a respective layer of electrode material. A layer of polymer electrolyte envelopes both layers of electrode material and one of the pair of edges of the current collector sheet, thereby encapsulating the one edge of the current collector sheet while leaving exposed the other edge of the current collector sheet.
A process for laminating at least one electrode sheet onto an electrically conductive support film is provided. The process comprises heating the electrically conductive support film and laminating the at least one electrode sheet onto at least one side of the heated electrically conductive support film. An apparatus for laminating at least one electrode sheet onto an electrically conductive support film is also provided. The apparatus comprises lamination rollers forming a nip and means for carrying the electrically conductive support film and the at least one electrode sheet to the nip formed by the lamination rollers. The apparatus also comprises a heater for heating the electrically conductive support film before the electrically conductive support film reaches the nip formed by the lamination rollers.
B05C 1/08 - Appareillages dans lesquels un liquide ou autre matériau fluide est appliqué à la surface de l'ouvrage par contact avec un élément portant le liquide ou autre matériau fluide, p. ex. un élément poreux imprégné du liquide à appliquer sous forme de revêtement pour appliquer un liquide ou autre matériau fluide à un ouvrage de longueur indéfinie en utilisant un rouleau
B05D 1/28 - Procédés pour appliquer des liquides ou d'autres matériaux fluides aux surfaces par transfert de liquides ou d'autres matériaux fluides, à partir de la surface d'éléments porteurs, p. ex. de pinceaux, tampons, rouleaux
B05D 3/02 - Traitement préalable des surfaces sur lesquelles des liquides ou d'autres matériaux fluides doivent être appliquésTraitement ultérieur des revêtements appliqués, p. ex. traitement intermédiaire d'un revêtement déjà appliqué, pour préparer les applications ultérieures de liquides ou d'autres matériaux fluides par cuisson
B05D 5/12 - Procédés pour appliquer des liquides ou d'autres matériaux fluides aux surfaces pour obtenir des effets, finis ou des structures de surface particuliers pour obtenir un revêtement ayant des propriétés électriques spécifiques
A method of charging an electrochemical generator having a plurality of electrochemical cells. The method includes the step of charging the plurality of electrochemical cells such that the total voltage of the generator reaches a predetermined voltage level, followed by the steps of selecting a particular electrochemical cell and charging the particular electrochemical cell to its respective maximum voltage, such that the cathode(s) of the particular electrochemical cell is(are) restored to a fully-charged state. Once it has been restored to its fully-charged state, the particular electrochemical cell is allowed to discharge itself down to a nominal voltage. Each of the plurality of electrochemical cells of the generator is selected and charged to its respective maximum voltage in turn, according to a predetermined selection sequence.
A process for laminating at least one electrode sheet onto an electrically conductive support film is provided. The process comprises heating the electrically conductive support film and laminating the at least one electrode sheet onto at least one side of the heated electrically conductive support film. An apparatus for laminating at least one electrode sheet onto an electrically conductive support film is also provided. The apparatus comprises lamination rollers forming a nip and means for carrying the electrically conductive support film and the at least one electrode sheet to the nip formed by the lamination rollers. The apparatus also comprises a heater for heating the electrically conductive support film before the electrically conductive support film reaches the nip formed by the lamination rollers.
An apparatus for maintaining a stack of electrochemical cells of an electrochemical generator in a state of compression. The apparatus comprises a pair of holding members, each one of the holding members being positioned at a respective extremity of the stack of electrochemical cells. The apparatus also comprises anchoring devices for maintaining the holding members at a predetermined distance from one another to thereby maintain the stack of electrochemical cells in a state of compression. Also provided is an electrochemical generator comprising an enclosure, a stack of electrochemical cells positioned in the enclosure, and an apparatus as defined above for maintaining the stack of electrochemical cells in a state of compression.
A polymer electrochemical generator having a plurality of electrochemical cells, each including at least one current collecting terminals, as well as a resilient heat sink material positioned adjacent and in mechanical contact with the current collecting terminals. The resilient heat sink material is electrically resistive and thermally conductive. A thermally conductive structural housing having walls encloses the plurality of electrochemical cells and the resilient heat sink material. The walls of the structural housing are positioned adjacent the resilient heat sink material and are in thermal contact therewith, for dissipating thermal energy generated by the plurality of electrochemical cells.
H01M 10/655 - Structures solides pour l'échange ou la conduction de la chaleur
H01M 10/0565 - Matériaux polymères, p. ex. du type gel ou du type solide
H01M 10/653 - Moyens de commande de la température associés de façon structurelle avec les éléments caractérisés par des matériaux électriquement isolants ou thermiquement conducteurs
H01M 10/6551 - Surfaces spécialement adaptées à la dissipation de la chaleur ou à la radiation, p. ex. nervures ou revêtements
40.
CATHODE MATERIAL FOR POLYMER BATTERIES AND METHOD OF PREPARING SAME
The invention provides a pre-mix of positive electrode material in transportable solid form comprising polymer and solid particles of electrochemically active material and/or electronically conductive additives and a process for preparing a pre-mix positive electrode in transportable solid form. The pre-mix positive electrode material may also comprise an alkali metal salt either dissolved or dispersed in the mixture. The invention also provides making a cathode film from the transportable solid pre-mix of positive electrode material.
brevets
