US 11,699,828 B2
Battery including tensioning band bonded to side walls of battery cells by band bonding material
Markus Schmitt, Tamm (DE); Ionut Marian Lica, Schwieberdingen (DE); Martin Kassner, Weil der Stadt (DE); and Roman Marx, Moensheim (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Feb. 1, 2021, as Appl. No. 17/163,689.
Claims priority of application No. 10 2020 201 139.7 (DE), filed on Jan. 30, 2020.
Prior Publication US 2021/0242527 A1, Aug. 5, 2021
Int. Cl. H01M 50/293 (2021.01); H01M 10/04 (2006.01); H01M 50/209 (2021.01); H01M 10/0525 (2010.01)
CPC H01M 50/293 (2021.01) [H01M 10/0481 (2013.01); H01M 10/0525 (2013.01); H01M 50/209 (2021.01)] 16 Claims
OG exemplary drawing
 
1. A battery (100) comprising:
a plurality of battery cells (10), which are assembled to form a cell stack and are received in a cell housing (20), wherein the battery cells (10) are bonded to a base (21) of the cell housing (20) by a heat conductive bonding material (TIM),
a plurality of spacer elements (11), wherein a spacer element (11) of the plurality of spacer elements (11) is arranged in each case between two adjacent battery cells (10) of the plurality of battery cells (10), and
two end plates (22), which delimit the cell stack at ends, wherein the end plates (22) are connected by at least one tensioning band (23) that at least partially surrounds the cell stack circumferentially,
wherein the at least one tensioning band (23) includes a first portion extending along and bonded to side walls of the battery cells (10) by a band bonding material,
wherein the at least one tensioning band (23) includes a second portion connected to an end plate of the two end plates (22),
wherein the at least one tensioning band (23) has a slot (24) formed in a region of connection of the second portion to the end plate (22), the slot (24) including two sidewalls that are spaced apart and that extend parallel to a longitudinal axis of the slot (24),
wherein the slot (24) further includes rounded, bulb-shaped portions (25) at opposite ends of the slot, and
wherein, perpendicular to the longitudinal axis of the slot, the rounded, bulb-shaped portions (25) extend outside of the two sidewalls and away from the longitudinal axis of the slot (24).