US 9,812,740 B2
Battery unit
Keiichi Tanii, Ibaraki (JP)
Assigned to HITACHI MAXELL, LTD., Osaka (JP)
Appl. No. 14/371,708
Filed by Keiichi Tanii, Ibaraki (JP)
PCT Filed Jan. 11, 2012, PCT No. PCT/JP2012/050392
§ 371(c)(1), (2), (4) Date Jul. 10, 2014,
PCT Pub. No. WO2013/105231, PCT Pub. Date Jul. 18, 2013.
Prior Publication US 2014/0335379 A1, Nov. 13, 2014
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/42 (2006.01); H01M 2/10 (2006.01); H01M 2/30 (2006.01); H01M 2/02 (2006.01); H01M 10/04 (2006.01)
CPC H01M 10/4257 (2013.01) [H01M 2/1038 (2013.01); H01M 2/30 (2013.01); H01M 10/425 (2013.01); H01M 2/0222 (2013.01); H01M 10/0427 (2013.01); H01M 10/0436 (2013.01); H01M 2220/30 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A battery unit used as a power source for a device comprising terminals, the battery unit comprising:
a coin shaped flat battery having a cylindrical positive electrode exterior can with a bottom and a cylindrical negative electrode sealing can with a bottom that covers an opening of the positive electrode exterior can, the open end of a side wall of the positive electrode exterior can being fitted on an outer circumferential surface of a side wall of the negative electrode sealing can; and
a single substrate layered above the flat battery and provided on a side of the negative electrode sealing can, the substrate having a circular disc shape,
the substrate having:
a circuit component mounted on an inner surface of the substrate facing to the negative electrode sealing can; and
a ground external terminal formed on an outer surface of the substrate opposite to the inner surface and electrically connected to the negative electrode sealing can, and
wherein the positive electrode exterior and the negative external terminal are adapted to respectively contact to the terminals of the device.