US 12,444,794 B2
Secondary battery and method of manufacturing the same
Masayuki Kageyama, Kyoto (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed by MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed on Feb. 25, 2022, as Appl. No. 17/680,709.
Application 17/680,709 is a continuation of application No. PCT/JP2020/033539, filed on Sep. 4, 2020.
Claims priority of application No. 2019-180790 (JP), filed on Sep. 30, 2019.
Prior Publication US 2022/0181726 A1, Jun. 9, 2022
Int. Cl. H01M 50/178 (2021.01); H01M 10/0587 (2010.01); H01M 50/105 (2021.01); H01M 50/107 (2021.01); H01M 50/136 (2021.01); H01M 50/179 (2021.01); H01M 50/184 (2021.01); H01M 50/186 (2021.01)
CPC H01M 50/178 (2021.01) [H01M 10/0587 (2013.01); H01M 50/105 (2021.01); H01M 50/107 (2021.01); H01M 50/136 (2021.01); H01M 50/179 (2021.01); H01M 50/184 (2021.01); H01M 50/186 (2021.01)] 13 Claims
OG exemplary drawing
 
1. A secondary battery comprising:
a battery device including a positive electrode and a negative electrode;
an outer package member having flexibility, wherein the outer package member accommodates the battery device, and includes a seal part at one end and includes no seal part at any position other than the one end;
a positive electrode wiring line coupled to the positive electrode and led to an outside of the outer package member via the seal part; and
a negative electrode wiring line coupled to the negative electrode and led to the outside of the outer package member via the seal part, wherein
the outer package member has a flat and columnar shape, with a longitudinal axis of the columnar shape extending in the columnar direction,
the outer package member has an enclosed structure sealed only at one location on one side of the battery device, and
in the seal part, mutually opposed portions in the columnar shape of the outer package member are joined to each other where the seal part includes a joint surface in which the mutually opposed portions of the outer package member are joined to each other and extend along a plane in a direction of the longitudinal axis, and the seal part is bent to allow the joint surface to be inclined at a bent point along the longitudinal axis at the one end, where the bent point is between:
an end of the outer package, and
ends of both of the positive electrode and the negative electrode nearest the one end.