US 12,136,704 B2
Battery including bipolar cells that have an edge insulating device
Ralf Angerbauer, Moeglingen (DE); Bernd Schumann, Rutesheim (DE); Florian Schmid, Korntal (DE); Joerg Thielen, Briedel (DE); Christian Diessner, Muehlacker-Muehlhausen (DE); Mark Kotik, Rochester Hills, MI (US); David Naughton, Oxford, MI (US); Jerome Homann, Renningen (DE); Anne Serout, Stuttgart (DE); Laura Bauer, Altendorf (DE); Stephen Scott, Fairborn, OH (US); Dan Schneider, Orion, MI (US); and Gary Mosley, Cincinnati, OH (US)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/054,985
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed May 17, 2019, PCT No. PCT/EP2019/062797
§ 371(c)(1), (2) Date Nov. 12, 2020,
PCT Pub. No. WO2019/228828, PCT Pub. Date Dec. 5, 2019.
Claims priority of provisional application 62/678,009, filed on May 30, 2018.
Prior Publication US 2021/0218065 A1, Jul. 15, 2021
Int. Cl. H01M 10/0562 (2010.01); H01M 10/0585 (2010.01); H01M 50/174 (2021.01)
CPC H01M 10/0585 (2013.01) [H01M 10/0562 (2013.01); H01M 50/174 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A battery comprising a stacked arrangement of electrochemical cells, each electrochemical cell comprising
a bipolar plate that includes a substrate, a first active material layer disposed on a first surface of the substrate, and a second active material layer disposed on a second surface of the substrate, the second surface being opposed to the first surface, the first active material layer having a first active material layer peripheral edge that is spaced apart from, and disposed closer to a center of the substrate than, a substrate peripheral edge, the second active material layer being a material that is different than the material of the first active material layer, the second active material layer having a second active material layer peripheral edge that is spaced apart from the substrate peripheral edge,
a solid electrolyte layer that is disposed on the second surface so as to encapsulate the second active material layer including the second active material layer peripheral edge, and
an edge insulating device that includes a sheet of electrically insulating material, the edge insulating device including an outer peripheral edge and an inner peripheral edge, the edge insulating device being disposed between the peripheral edges of the substrates of a pair of adjacent cells in such a way that
the outer peripheral edge is disposed further from the center of the substrate than the substrate peripheral edge,
the edge insulating device physically contacts and is directly secured to the first surface of one cell of the pair of adjacent cells or the solid electrolyte layer of the other cell of the pair of adjacent cells,
the outer peripheral edge is spaced apart from, and disposed further from the center of the substrates than, the bipolar plate peripheral edge,
the inner peripheral edge is spaced apart from, and disposed closer to the center of the substrates than, the bipolar plate peripheral edge and the second active material layer peripheral edge, and
the inner peripheral edge is disposed further from the center of the substrates than the first active material layer peripheral edge,
wherein
when the edge insulating device physically contacts and is directly secured to the first surface of the one cell of the pair of adjacent cells, the edge insulating device is movable relative to the solid electrolyte layer of other cell of the pair of adjacent cells, and
when the edge insulating device physically contacts and is directly secured to the solid electrolyte layer of the other cell of the pair of adjacent cells, the edge insulating device is movable relative to the first surface of the one cell of the pair of adjacent cells.