# US 8,785,029 B2 · Connection plate for battery terminals and method for manufacturing connection plate for battery terminals > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,785,029 B2 - Document ID: US8785029B2 - Status: Granted - Kind: B2 - Application number: 13/996,278 - Filed: 2011-12-07 - Published: 2013-11-28 - Granted: 2014-07-22 - Earliest claimed: 2010-12-28 - Assignees: Neomax Materials Co., Ltd. - Applicants: Yoshimitsu Oda; Masaharu Yamamoto; Masaaki Ishio - Inventors: Yoshimitsu Oda; Masaharu Yamamoto; Masaaki Ishio - Web page: https://patentgrep.com/patent/US8785029B2 ## CPC - B21K 23/04: flanged articles (B21K1/28 takes precedence; flanging tubes B21D) - H01B 1/023: {Alloys based on aluminium} - H01B 1/026: {Alloys based on copper} - H01M 50/507: comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules - H01M 50/522: Inorganic material - H01R 43/0221: {Laser welding (H01R43/0228 takes precedence)} - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - Y10T 29/49204: Contact or terminal manufacturing - Y10T 29/49213: Metal - Y10T 29/49224: with coating - B21K: MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS (making particular articles by working sheet metal without essentially removing material B21D; processing wire B21F; making pins, needles or nails B21G; making particular articles by rolling B21H; forging machines, pressing machines, hammering machines, in general B21J; making chains B21L; plating B23K) - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - 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 connection plate for battery terminals capable of inhibiting a base and a battery terminal connection portion from being detached from each other is provided. This connection plate for battery terminals (2) includes a battery terminal connection portion (4) fitted into a second hole (31) of a base (3) made of first metal, including a hole for connection (42) into which a second battery terminal (1b) is inserted and a flange portion (4b), while the battery terminal connection portion is constituted by at least a first layer (40) made of second metal, arranged on a side opposite to the base and a second layer (41) made of third metal, arranged between the base and the first layer. ## Claims ### Claim 1 A connection plate for battery terminals (2, 402), comprising: a plate-like base (3) including a first hole (30) into which a first battery terminal (1a) made of first metal is inserted and a second hole (31) into which a second battery terminal (1b) made of second metal different from the first metal is inserted, made of metal identical to the first metal; and a battery terminal connection portion (4, 404) fitted into an inner peripheral surface (31a) of the second hole of the base, including a hole for connection (42) into which the second battery terminal is inserted and a flange portion (4b, 404c) arranged on at least one of an upper surface (3a) and a lower surface (3b) of the base, wherein the battery terminal connection portion is constituted by at least a first layer (40) made of metal identical to the second metal, arranged on a side opposite to the base and a second layer (41) made of third metal different from the first metal and the second metal, arranged between the base and the first layer. ### Claim 2 (depends on 1) The connection plate for battery terminals according to claim 1, wherein an intermetallic compound layer (5) containing alloy made of the first metal constituting the base and the third metal constituting the second layer is formed on an interface between the base and the second layer of the battery terminal connection portion. ### Claim 3 (depends on 2) The connection plate for battery terminals according to claim 2, wherein the intermetallic compound layer is formed on an interface between the inner peripheral surface of the second hole of the base and the second layer of the battery terminal connection portion and on an interface between at least one of the upper surface and the lower surface of the base and the second layer of the battery terminal connection portion in the flange portion. ### Claim 4 (depends on 1) The connection plate for battery terminals according to claim 1, wherein the battery terminal connection portion is made of a cladding material constituted by at least the first layer and the second layer. ### Claim 5 (depends on 1) The connection plate for battery terminals according to claim 1, wherein the first metal is one of Al and Cu, the second metal is the other of Al and Cu, and the third metal is Ni. ### Claim 6 (depends on 5) The connection plate for battery terminals according to claim 5, wherein the second layer of the battery terminal connection portion has a thickness of at least 5 μm. ### Claim 7 (depends on 5) The connection plate for battery terminals according to claim 5, wherein the first metal is Al, and the second metal is Cu, and a thickness of the first layer made of Cu is larger than a thickness of the second layer made of Ni in the battery terminal connection portion. ### Claim 8 (depends on 1) The connection plate for battery terminals according to claim 1, wherein the flange portion is annularly formed to circumferentially surround the second hole. ### Claim 9 (depends on 1) The connection plate for battery terminals according to claim 1, wherein a thickness of the flange portion is at least a thickness of a portion fitted into the inner peripheral surface of the second hole of the base in the battery terminal connection portion. ### Claim 10 (depends on 1) The connection plate for battery terminals according to claim 1, wherein the second battery terminal is configured to be inserted into the hole for connection from a side of the lower surface of the base toward a side of the upper surface thereof, and the flange portion is arranged on at least the upper surface of the base. ### Claim 11 (depends on 1) The connection plate for battery terminals according to claim 1, wherein the flange portion has a first flange portion (4b) arranged on the upper surface of the base and a second flange portion (404c) arranged on the lower surface of the base. ### Claim 12 (depends on 11) The connection plate for battery terminals according to claim 11, wherein the second battery terminal is configured to be inserted into the hole for connection from a side of the lower surface of the base toward a side of the upper surface thereof, and a thickness of the second flange portion is smaller than a thickness of the first flange portion in the battery terminal connection portion. ### Claim 13 (depends on 1) The connection plate for battery terminals according to claim 1, wherein the battery terminal connection portion is constituted by the first layer, the second layer, and a third layer (444) arranged on a side of the first layer closer to the hole for connection, made of fourth metal having higher corrosion resistance as compared with the second metal constituting the first layer. ### Claim 14 (depends on 13) The connection plate for battery terminals according to claim 13, wherein the fourth metal constituting the third layer of the battery terminal connection portion is made of a metal material absorbing more laser light employed in laser welding than the second metal constituting the second battery terminal. ### Claim 15 (depends on 13) The connection plate for battery terminals according to claim 13, wherein the third metal and the fourth metal are made of identical metal. ### Claim 16 (depends on 1) The connection plate for battery terminals according to claim 1, wherein the first hole of the base is so configured that the first battery terminal is inserted thereinto without the battery terminal connection portion therebetween, and the second hole of the base is so configured that the second battery terminal is inserted thereinto with the battery terminal connection portion therebetween. ### Claim 17 A method for manufacturing a connection plate for battery terminals (2, 402), comprising steps of: providing a first hole (30) into which a first battery terminal (1a) made of first metal is inserted and a second hole (31) into which a second battery terminal (1b) made of second metal different from the first metal is inserted in a plate-like base (3) made of metal identical to the first metal; preparing a plate-like member (104, 304) constituted by at least a first layer (40) made of metal identical to the second metal and a second layer (41) made of third metal different from the first metal and the second metal; and forming a battery terminal connection portion (4, 404) including a hole for connection (42) into which the second battery terminal is inserted and a flange portion (4b, 404c) arranged on at least one of an upper surface (3a) and a lower surface (3b) of the base, fitted into an inner peripheral surface (31a) of the second hole of the base by press working in a state where a side of the second layer of the plate-like member is arranged to cover the second hole of the base and a part of the upper surface of the base. ### Claim 18 (depends on 17) The method for manufacturing a connection plate for battery terminals according to claim 17, further comprising a step of forming an intermetallic compound layer (5) containing alloy made of the first metal constituting the base and the third metal constituting the second layer on an interface between the base and the second layer of the battery terminal connection portion by diffusion annealing after the step of forming the battery terminal connection portion. ### Claim 19 (depends on 17) The method for manufacturing a connection plate for battery terminals according to claim 17, wherein the step of preparing the plate-like member includes a step of forming the plate-like member made of a cladding material by applying a prescribed pressure to bond a first metal plate made of the second metal and a second metal plate made of the third metal to each other. ### Claim 20 (depends on 17) The method for manufacturing a connection plate for battery terminals according to claim 17, wherein the step of forming the battery terminal connection portion includes a step of forming the battery terminal connection portion including the flange portion and the hole for connection, fitted into the inner peripheral surface of the second hole of the base by the press working in a state where the side of the second layer of the plate-like member circularly or annularly formed is arranged to cover the second hole of the base and the part of the upper surface of the base.