# US 2012/0021272 A1 · Separator for gel electrolyte storage batteries > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2012/0021272 A1 - Document ID: US20120021272A1 - Status: Published application - Kind: A1 - Application number: 12/733,870 - Filed: 2008-10-17 - Published: 2012-01-26 - Earliest claimed: 2007-10-20 - Assignees: Exide Technologies - Inventors: Friedrich Kramm; Georg Meckl; Harald Niepraschk; Peter Nemec-Losert - Web page: https://patentgrep.com/patent/US20120021272A1 ## CPC - H01M 10/10: Immobilising of electrolyte - H01M 50/414: Synthetic resins, e.g. thermoplastics or thermosetting resins - H01M 50/44: Fibrous material - H01M 50/466: U-shaped, bag-shaped or folded - H01M 50/474: characterised by their position inside the cells - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - Y10T 29/49108: Electric battery cell making - 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A method of synthetic imaging comprising the steps of: emitting a first electromagnetic signal having a first frequency from a first radiation source, emitting at least one second electromagnetic signal having a second frequency from a second radiation source, wherein the first and second frequencies are different from each other, substantially simultaneously receiving the first signal and the second signal with a first receiver, substantially simultaneously receiving the first signal and the second signal with at least one second receiver, arranging an object on the path of at least one electromagnetic signal between the radiation sources and the receivers, wherein the signals are reflected by the object before they meet the receivers, and computing an image of the object from the signals received by the receivers and a device for practicing the method. ## Claims ### Claim at position 1 1-24. (canceled) ### Claim 25 A separator (1) for electrode plates (2) of storage batteries having two substantially rectangular layers (3, 3′) of a flat separator material, which layers come to lie in mutually superposed relationship, wherein the two layers of separator material are connected together at least portion-wise in the region of their edges, forming a casing or pocket for the introduction of an electrode plate and the separator material has a separator leaf (6) with ribs (5, 5′) on its mutually opposite surfaces, the configuration of the ribs (5) on a surface of the separator leaf has a multiplicity of intersection points (5″) with the configuration of the ribs (5′) on the opposite surface of the separator leaf. ### Claim 26 (depends on 25) A separator according to claim 25 wherein the ribs (5, 5′) project from the surface of the separator leaf (6) and are of a height of between 0.3 mm and 2 mm, preferably between 0.5 mm and 1.5 mm. ### Claim 27 (depends on 25) A separator according to claim 25 wherein a centre-to-centre spacing of adjacent ribs (5, 5′) on the same surface of the separator leaf (6) is between 1 mm and 12 mm. ### Claim 28 (depends on 26) A separator according to claim 26 wherein the ribs (5, 5′) at least on a surface of the separator leaf (6) extend in substantially parallel relationship. ### Claim 29 (depends on 25) A separator according to claim 25 wherein the two layers (3, 3′) are produced in one piece and come to lie in mutually superposed relationship by folding ### Claim 30 (depends on 25) A separator according to claim 25 wherein the two rectangular layers (3, 3′) which come to lie in mutually superposed relationship are connected together completely at an outside edge of the separator (1) over the entire length of the side edge and are connected together at least partly at the oppositely disposed outside edge of the separator. ### Claim 31 (depends on 25) A separator according to claim 25 wherein the two rectangular layers (3, 3′) which come to lie in mutually superposed relationship are connected together completely at an outside edge of the separator (1) over the entire length of the side edge and are connected together at least portion-wise at the adjoining outside edge of the separator. ### Claim 32 (depends on 25) A separator according to claim 25 wherein the layers (3, 3′) are connected together at least partially by welding or knurling. ### Claim 33 (depends on 25) A separator according to claim 25 wherein the separator material is porous polyethylene or porous polyvinylychloride. ### Claim 34 (depends on 25) A separator according to claim 25 wherein the separator leaf (6) is of a thickness of between 0.1 and 0.6 mm, ### Claim 35 (depends on 25) A separator according to claim 25 wherein at least one additional separation layer in the form of a fiber mat is provided between the layers (3, 3′), which upon insertion of an electrode plate (2) into the separator (1) is arranged between the separator material and the electrode plate. ### Claim 36 A method for retaining an electrode plate (2) in gel storage batteries using a separator having two substantially rectangular layers (3, 3′) of a flat separator material, which layers come to lie in mutually superposed relationship, wherein the two layers of separator material are connected together at least partly in the region of their edges, forming a casing or pocket for the introduction of an electrode plate. ### Claim 37 (depends on 36) The method of claim 36 wherein the separator material has a separator leaf (6) with ribs (5, 5′) on both mutually opposite surfaces of the separator leaf (6) and the configuration of the ribs (5) on a surface of the separator leaf has a multiplicity of intersection points (5″) with the configuration of the ribs (5′) on the opposite surface of the separator leaf. ### Claim 38 (depends on 37) The method of claim 37 wherein the ribs (5, 5′) at least on a surface of the separator leaf (6) extend in substantially parallel relationship. ### Claim 39 (depends on 36) The method of claim 36 wherein the two layers (3, 3′) are produced in one piece and come to lie in mutually superposed relationship by folding and the two rectangular layers (3, 3′) which come to lie in mutually superposed relationship are connected together completely at an outside edge of the separator (1) over the entire length of the outside edge ### Claim 40 (depends on 36) The method of claim 36 wherein the separator material is porous. ### Claim 41 (depends on 36) The method of claim 36 wherein the separator leaf (6) is of a thickness of between 0.15 and 0.4 mm. ### Claim 42 (depends on 36) The method of claim 36 wherein at least one additional separation layer in the form of a fiber mat is provided between the layers, and which upon insertion of an electrode plate (2) into the separator (1) is arranged between the separator material and the electrode plate. ### Claim 43 (depends on 25) A storage battery having a separator (1) according to claim 25.