US 12,136,746 B2
Method for producing busbar, busbar, and battery module
Yasumasa Kojima, Hyogo (JP); and Hiroyuki Mihara, Osaka (JP)
Assigned to SANYO Electric Co., Ltd., Osaka (JP)
Appl. No. 17/286,032
Filed by SANYO Electric Co., Ltd., Osaka (JP)
PCT Filed Sep. 2, 2019, PCT No. PCT/JP2019/034420
§ 371(c)(1), (2) Date Apr. 16, 2021,
PCT Pub. No. WO2020/090216, PCT Pub. Date May 7, 2020.
Claims priority of application No. 2018-202973 (JP), filed on Oct. 29, 2018.
Prior Publication US 2021/0384589 A1, Dec. 9, 2021
Int. Cl. H01M 50/505 (2021.01); H01M 10/48 (2006.01); H01M 50/204 (2021.01); H01M 50/209 (2021.01); H01M 50/224 (2021.01); H01M 50/298 (2021.01); H01M 50/50 (2021.01); H01M 50/569 (2021.01); H01M 50/289 (2021.01)
CPC H01M 50/505 (2021.01) [H01M 10/482 (2013.01); H01M 50/204 (2021.01); H01M 50/209 (2021.01); H01M 50/224 (2021.01); H01M 50/298 (2021.01); H01M 50/50 (2021.01); H01M 50/569 (2021.01); H01M 50/289 (2021.01)] 12 Claims
OG exemplary drawing
 
1. A method for producing a busbar that electrically connects a plurality of batteries, the method comprising
forming a plurality of terminal joints that are joined to output terminals of the respective batteries by applying pressure to pressure-weld a plurality of electric wires in a plurality of first regions in a bundle of the plurality of electric wires, each first region being a depressed portion of a second region, such that the thickness of the first region is less than the thickness of the remainder of the second region, the first regions being arranged at a predetermined interval in an extending direction of the bundle, wherein the forming of the terminal joints includes forming a slope having a thickness gradually increasing from the thickness of the first region to the thickness of the remainder of the second region.
 
7. A busbar electrically connecting a plurality of batteries, the busbar comprising:
a plurality of terminal joints that are joined to output terminals of the respective batteries; and a coupler that connects the plurality of terminal joints, wherein the coupler is formed of a non-pressure-welded part in a bundle of a plurality of electric wires, and each of the plurality of terminal joints is formed of a pressure-welded part in the bundle, wherein the pressure welded part comprises at least one first region, each first region being a depressed portion of a second region, such that the thickness of the first region is less than the thickness of the remainder of the second region, and each of the terminal joints has a slope at an edge close to the coupler, the slope having a thickness gradually increasing toward the coupler from the thickness of the first region to the thickness of the remainder of the second region.