Electric vehicle propulsion system and method utilizing solid-state rechargeable electrochemical cells

摘要

A vehicle propulsion system comprising a plurality of solid state rechargeable battery cells configured to power a drivetrain. In accordance with once aspect of the invention, a transportation system that is powered at least in part by electricity stored in the form of rechargeable electrochemical cells. According to an embodiment of the present invention, these cells are combined in series and in parallel to form a pack that is regulated by charge and discharge control circuits that are programmed with algorithms to monitor state of charge, battery lifetime, and battery health.

主权项

1. An energy storage apparatus comprising a plurality of solid state rechargeable battery cells configured to power an appliance, the apparatus comprising:
a substrate member comprising a surface region; a stack of electrochemical cells configured overlying the surface region of the substrate member, each electrochemical cell formed overlying the surface of a thickness of material, said electrochemical cell having an overall thickness of less than 50 microns, each of said electrochemical cells comprising:
the thickness of material;a positive electrode material comprised of a transition metal oxide or a transition metal phosphate, the positive electrode material characterized by a thickness between 0.5 micron and 50 microns;a solid state layer of a ceramic, polymer, or glassy material configured for conducting lithium or magnesium ions during a charge and discharge process, the solid state layer characterized by a thickness between 0.1 micron and 5 microns; anda negative electrode material configured for electrochemical insertion or plating of ions during the charge and discharge process, the negative electrode material characterized by a thickness between 0.5 micron and 50 microns; and an electrically conductive material coupled with the positive electrode material and free from contact with the negative electrode material, wherein said layer of positive and negative electrode materials each have a total surface area greater than 0.5 meters, wherein the substrate member is made of at least a polymer, a metal, a semiconductor, or an insulator; whereupon the positive electrode material comprises a positive electrode layer; the negative electrode material comprises a negative electrode layer; the electrically conductive material comprising an electrically conductive layer, whereupon the plurality of electrochemical cells, each of the electrochemical cells comprising the positive electrode layer, the solid state layer, the negative electrode layer, are continuously wound or stacked; and wherein a plurality of the battery cells has an energy density of at least 700 Watt-hours per liter.