# US 9,521,771 B2 · Device case and method of manufacturing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,771 B2 - Document ID: US9521771B2 - Status: Granted - Kind: B2 - Application number: 13/864,116 - Filed: 2013-04-16 - Published: 2013-10-17 - Granted: 2016-12-13 - Earliest claimed: 2012-04-17 - Assignees: GS Yuasa International Ltd. - Applicants: GS Yuasa International, Ltd. - Inventors: Hidenori Shishido; Makoto Murakami - Web page: https://patentgrep.com/patent/US9521771B2 ## CPC - H05K 13/00: Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components - B23K 15/006: {of rectilinear seams} - B23K 26/244: Overlap seam welding - B23K 26/26: of rectilinear seams - B23K 26/32: taking account of the properties of the material involved - H01M 50/169: by welding, brazing or soldering - B23K 2101/12: Vessels - B23K 2101/18: Sheet panels - B23K 2101/36: Electric or electronic devices - B23K 2103/10: Aluminium or alloys thereof - Y02E 60/10: Energy storage using batteries - Y10T 29/49908: Joining by deforming - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM - 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A device case includes: a case body having a side wall and an opening; a lid plate for closing the opening, an end portion of the lid plate being projected from an outer surface of the side wall; and a welded portion that joins the lid plate with the side wall. The lid plate has a beam receiving area located in a vicinity of an end portion of the lid plate for receiving a beam emitted vertically with respect to the beam receiving area. ## Claims ### Claim 1 A device case, comprising: a case body comprising a side wall and an opening; a lid pate for dosing the opening, an end portion of the lid plate being projected horizontally from an outer surface of the side wall; and a welded portion that joins the lid plate with the side wall, a power generating element disposed within the device case, wherein the lid plate comprises a beam receiving area located in a vicinity of the end portion of the lid plate configured for receiving a beam emitted vertically with respect to the beam receiving area, wherein the beam receiving area extends on a top surface of the lid plate in a direction that the end portion of the lid plate projects from the outer surface of the side wall, wherein the welded portion extends over the end portion of the lid plate, extends to the top surface of the lid plate, and does not reach an inner surface of the side wall, wherein a thickness of the welded portion in a thickness direction of the lid plate is more than a thickness of the welded portion in a thickness direction of the side wall, and wherein, in the thickness direction of the side wall, the welded portion bulges beyond the outer surface of the side wall, and in the thickness direction of the lid plate, the welded portion reaches the top surface of the lid plate. ### Claim 2 (depends on 1) The device case according to claim 1, wherein the welded portion extends inside the side wall and ends at the outer surface of the side wall. ### Claim 3 (depends on 1) The device case according claim 1, wherein the end portion of the lid plate extends in a horizontal direction and the outer surface of the side wall extends in a vertical direction such that a gap is defined below the end portion of the lid plate, the gap extending to the outer surface of the side wall. ### Claim 4 (depends on 1) The device case according to claim 1, wherein the welded portion does not reach inner surfaces of the lid plate and the side wall. ### Claim 5 (depends on 1) The device case according to claim 1, wherein the welded portion projects from the outer surface of the side wall. ### Claim 6 (depends on 1) The device case according to claim 1, wherein the welded portion does not project from the outer surface of the side wall. ### Claim 7 (depends on 1) The device case according to claim 1, wherein the welded portion extends to an outer surface of the lid plate. ### Claim 8 (depends on 1) A method of manufacturing the device case according to claim 1, the case body including a first plate member and the lid plate including a second plate member, the method comprising: bringing the second plate member into contact with an end of the first plate member; and applying a beam to a contact portion between the first plate member and the second plate member to form a welded portion, wherein an end portion of the second plate member is horizontally projected from an outer surface of the first plate member in the bridging, wherein the beam is applied to an outer surface of the second pate member opposite to a surface in contact with the first plate member in the applying, wherein the welded portion extends over the end portion of the second plate member and does not reach an inner surface of the first plate member, and wherein the beam is applied vertically to a beam receiving area that extends on a top surface of the second plate member in a direction that the end portion of the second plate member projects from the outer surface of the first plate member. ### Claim 9 (depends on 8) The method of manufacturing the device case according to claim 8, wherein the welded portion projects from the outer surface of the first plate member. ### Claim 10 (depends on 8) The method of manufacturing the device case according to claim 8, wherein a center in the beam receiving area applied with the beam in the outer surface of the second plate member is displaced by a distance p from the outer surface of the first plate member toward the inner surface of the first plate member, and the distance p satisfies 0 mm≦p≦0.4 mm. ### Claim 11 (depends on 8) The method of manufacturing the device case according to claim 8, wherein the end portion of the second plate member projects from the outer surface of the first plate member by a length x satisfying 0 mm