US 12,463,300 B2
Electricity storage device and electricity storage module
Shinya Motokawa, Hyogo (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/268,902
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Sep. 17, 2019, PCT No. PCT/JP2019/036273
§ 371(c)(1), (2) Date Feb. 16, 2021,
PCT Pub. No. WO2020/066729, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 2018-185787 (JP), filed on Sep. 28, 2018.
Prior Publication US 2021/0328310 A1, Oct. 21, 2021
Int. Cl. H01M 50/54 (2021.01); H01M 10/0585 (2010.01); H01M 50/176 (2021.01); H01M 50/209 (2021.01); H01M 50/264 (2021.01); H01M 50/293 (2021.01); H01M 50/474 (2021.01); H01M 50/531 (2021.01); H01M 50/533 (2021.01); H01M 50/55 (2021.01); H01M 50/553 (2021.01); H01M 50/557 (2021.01); H01M 50/586 (2021.01); H01M 50/59 (2021.01)
CPC H01M 50/54 (2021.01) [H01M 10/0585 (2013.01); H01M 50/209 (2021.01); H01M 50/531 (2021.01); H01M 50/533 (2021.01); H01M 50/55 (2021.01); H01M 50/553 (2021.01); H01M 50/557 (2021.01); H01M 50/586 (2021.01); H01M 50/59 (2021.01); H01M 50/176 (2021.01); H01M 50/264 (2021.01); H01M 50/293 (2021.01); H01M 50/474 (2021.01)] 9 Claims
OG exemplary drawing
 
1. An electricity storage device comprising:
an outer can having an opening;
an electrode body having a pair of electrode plates and housed in the outer can;
a sealing plate that closes the opening with a sealing surface of the sealing plate;
a pair of output terminals arranged on the sealing plate in a first direction that is a longitudinal direction of the sealing plate;
a pair of current collectors by which the pair of electrode plates of the electrode body is electrically connected to the pair of output terminals respectively through respective collector plates;
an electrode body holder that is housed in the outer can and has an insulating property; and
a pair of fixing mechanisms that are arranged outside the pair of output terminals in the first direction respectively and fix the electrode body holder to the sealing plate,
wherein:
each of the electrode plates has a collector tab having a band-shape that extends from its corresponding electrode plate while curving on a side of the opening of the outer can,
each of the current collectors is configured by the collector tab and the collector plate that are physically contacted to each other,
the electrode body holder includes:
a flat plate extending in a second direction perpendicular to the sealing plate with one side of the flat plate being in parallel to the first direction; and
a pair of first fixing parts protruding in the second direction toward the sealing plate from both ends of the flat plate in the first direction,
the sealing plate includes:
a pair of second fixing parts protruding in the second direction toward the pair of first fixing parts from both outside parts being located outside the pair of output terminals in the first direction on the sealing surface respectively,
each of the pair of fixing mechanisms is configured to include one of the pair of the first fixing parts and one of the pair of the second fixing parts that are directly contacted to each other, and
the collector tabs are arranged between the pair of fixing mechanisms.