# US 2013/0157111 A1 · Bipolar electrochemical battery with an improved casing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0157111 A1 - Document ID: US20130157111A1 - Status: Published application - Kind: A1 - Application number: 13/818,191 - Filed: 2011-08-23 - Published: 2013-06-20 - Earliest claimed: 2010-08-24 - Assignees: Commissariat A L'enrgie Atomique Et Aux Ene Alt - Inventors: Marianne Chami; Lionel Picard - Web page: https://patentgrep.com/patent/US20130157111A1 ## CPC - H01M 10/044: {with bipolar electrodes} - H01M 10/0413: {Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes} - H01M 10/0418: {with bipolar electrodes} - H01M 10/0468: {Compression means for stacks of electrodes and separators} - H01M 50/103: prismatic or rectangular (H01M50/109, H01M50/11 take precedence) - H01M 50/121: Organic material - H01M 50/258: Modular batteries; Casings provided with means for assembling - H01M 50/547: characterised by the disposition of the terminals on the cells - H01M 50/55: on the same side of the cell - H01M 50/557: Plate-shaped terminals - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 50/124: having a layered structure - H01M 50/1245: {characterised by the external coating on the casing} - H01M 50/131: characterised by physical properties, e.g. gas permeability, size or heat resistance - H01M 50/44: Fibrous material - H01M 2004/029: {Bipolar electrodes} - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A casing for a lithium bipolar electrochemical battery including a bipolar element. The casing includes a composite material including a matrix and at least one porous reinforcement, the matrix of which includes at least one hardened polymer impregnating the at least one porous reinforcement, wherein the at least one porous reinforcement and the at least one hardened polymer encase the bipolar element and maintain a determined pressure on either side of the bipolar element to maintain a determined contact between its constituents. ## Claims ### Claim at position 1 1-16. (canceled) ### Claim 17 A bipolar lithium electrochemical battery comprising: at least one bipolar element; and a casing encapsulating the bipolar element; wherein the casing includes a composite material, including a matrix and at least one porous reinforcement, the matrix of which including at least one hardened polymer impregnating the at least one porous reinforcement, wherein the at least one porous reinforcement and the at least one hardened polymer encase the bipolar element and apply a determined pressure to either side of the bipolar element, to maintain a determined contact between its constituents. ### Claim 18 (depends on 17) The lithium bipolar electrochemical battery according to claim 17, wherein the at least one porous reinforcement is fabric and/or a mat. ### Claim 19 (depends on 17) The lithium bipolar electrochemical battery according to claim 17, wherein the at least one porous reinforcement includes at least two portions, one on each face of the bipolar element. ### Claim 20 (depends on 17) The lithium bipolar electrochemical battery according to claim 17, wherein poles forming charging terminals of the battery include tabs that extend towards outside the battery from within the battery, projecting from the at least one hardened polymer. ### Claim 21 (depends on 17) The lithium bipolar electrochemical battery according to claim 17, wherein poles forming charging terminals of the battery include at least first and second contacts, the first contact fitted on to one face of the battery, and the second contact is of opposite polarity and fitted on to another face of the battery. ### Claim 22 (depends on 21) The lithium bipolar electrochemical battery according to claim 21, wherein the poles include at least four contacts, wherein each face of the battery includes at least two poles, one negative and one positive, with a pole in each corner, and both poles of one face face each of the two poles of the other face, and wherein two poles of a given corner are of same polarity. ### Claim 23 (depends on 17) The lithium bipolar electrochemical battery according to claim 17, wherein the at least one porous reinforcement is made from carbon fibers and the hardened polymer is an epoxy resin. ### Claim 24 A method for producing a casing of a lithium bipolar electrochemical battery including a bipolar element, the method comprising: installing a subassembly including a bipolar element between two portions of at least one porous reinforcement impregnated by at least one polymer or one or more monomers in a mold; applying a determined pressure to either side of the two impregnated reinforcement portions of the subassembly in the mold, until the at least one polymer is hardened. ### Claim 25 (depends on 24) The method according to claim 24, wherein the method includes impregnation of both porous reinforcing portions after they are installed exposed around the bipolar element. ### Claim 26 (depends on 24) The method according to claim 24, wherein the installing includes installing porous reinforcing portions that have been pre-impregnated by at least one polymer or one or more monomers. ### Claim 27 (depends on 24) The method according to claim 24, wherein the applying is accomplished at ambient temperature. ### Claim 28 (depends on 24) The method according to claim 24, wherein the applying is accomplished with a pressure between 0.05 MPa and 0.5 MPa. ### Claim 29 (depends on 21) An assembly including a stack of batteries according to claim 21, wherein contacts of opposite polarity between two adjacent batteries are in contact. ### Claim 30 (depends on 21) An assembly including a row of batteries according to claim 21, wherein contacts of a same polarity are connected to one another by an electrical connecting strip. ### Claim 31 (depends on 22) An assembly including a stack of batteries according to claim 22, wherein the contacts of a same polarity between two adjacent batteries are in contact. ### Claim 32 (depends on 31) An assembly according to claim 31, wherein all batteries have a same unit power.