Patent application number | Description | Published |
20100190047 | VARIABLE VOLUME CONTAINMENT FOR ENERGY STORAGE DEVICES - A stacked energy storage device (ESD) has at least two cell segments arranged in a stack. Each cell segment may have a first electrode unit having a first active material electrode, a second electrode unit having a second active material electrode, and an electrolyte layer between the active material electrodes. Variable volume containment may be used to control the inter-electrode spacing within each cell segment. In some embodiments, one or more dynamic flexible gaskets may be included in each cell segment to seal the electrolyte within the cell segment and to deform in preferred directions. In some embodiments, hard stops may set the inter-electrode spacing of the ESD. | 07-29-2010 |
20100203384 | ELECTRODE FOLDS FOR ENERGY STORAGE DEVICES - A stacked energy storage device (ESD) has at least two conductive substrates arranged in a stack. Each cell segment may have a first electrode unit having a first active material electrode, a second electrode unit having a second active material electrode, and an electrolyte layer between the active material electrodes. Each active material electrode may have a plurality of folded sections and planar sections to increase the ESD capacity, for example, by increasing number of interfaces within each cell segment. | 08-12-2010 |
20100304191 | ENERGY STORAGE DEVICES HAVING CELLS ELECTRICALLY COUPLED IN SERIES AND IN PARALLEL - A stacked energy storage device (ESD) has at least two cell segments arranged in a stack. Each cell segment may have a first electrode unit having a first active material electrode, a second electrode unit having a second active material electrode, and an electrolyte layer between the active material electrodes. The ESD includes at least two sub-stacks, where the elements of each respective sub-stack are electrically coupled in series with other elements of the sub-stack. The sub-stacks may be placed in a single stack, and the sub-stacks may be electrically coupled in parallel, in series, or both, with other sub-stacks to create an ESD with a particular voltage and current capacity. The entire stack may be contained by a single pair of end caps. | 12-02-2010 |
20110059362 | METHODS FOR FORMING FOAMED ELECTRODE STRUCTURES - Electrode structures may include an electronically conductive foam in contact with an electronically conductive substrate. In some embodiments, the foam may be formed by coating a porous precursor material in contact with a substrate with an electronically conductive material and subsequently removing the precursor material. In some embodiments, the foam may be formed by removing a non-conductive component of a composite material in contact with a substrate, leaving a conductive component in contact with the substrate. Electrode structures may be coated with electronically conductive materials or sintered at elevated temperature to improve durability and conductivity. | 03-10-2011 |
20110070488 | HIGH PERFORMANCE ELECTRODES - Techniques, arrangements and compositions are provided to incorporate nanostructured materials into electrodes for energy storage devices. Materials such as, for example, carbon nanotubes, silicon nanowires, silicon carbide nanowires, zinc nanowires, and other materials may be used to modify electrode properties such as electronic conductivity, thermal conductivity, or durability, for example. In some embodiments, nanostructured materials may be added to electrode formulations such as, for example, slurries or powders. Nanostructured materials may be deposited directly onto active material particles or electrode components. In some embodiments, coatings may be used to assist in deposition. | 03-24-2011 |
20130011720 | STACKING AND SEALING CONFIGURATIONS FOR ENERGY STORAGE DEVICES - An energy storage device is provided that includes a bipolar conductive substrate having a first side coupled to a first substack and a second side coupled to a second substack. The first and second substacks have a plurality of alternately stacked positive and negative monopolar electrode units. Each respective monopolar electrode unit has a first and second active material electrode layer on opposing sides of a conductive pathway. A separator is provided between adjacent monopolar electrode units. The conductive pathways of the positive monopolar electrode units are electronically coupled to form a positive tabbed current bus, and the conductive pathways of the negative monopolar electrode units are electronically coupled to form a negative tabbed current bus. The negative tabbed current bus of the first substack and the positive tabbed current bus of the second substack are coupled to the first and second side of the bipolar conductive substrate respectively. | 01-10-2013 |
20140272477 | HYBRID ELECTROCHEMICAL CELL SYSTEMS AND METHODS - Disclosed herein are systems, devices, and methods for a hybrid electrochemical cell which utilizes two different chemistries in the same cell. According to one aspect, the hybrid cell includes a first pair of electrode units which form a first electrochemical cell and a second pair of electrode units, which form a second electrochemical cell. The second electrochemical cell utilizes a different chemistry than the first electrochemical cells, but both chemistries share a common electrolyte. The hybrid cell further comprises a common electrolyte layer provided between each pair of electrodes. In certain implementations, the common electrolyte layer is a single cavity such that the electrolyte is shared between both the first and the second electrochemical cell. | 09-18-2014 |
20140370374 | VARIABLE VOLUME CONTAINMENT FOR ENERGY STORAGE DEVICES - A stacked energy storage device (ESD) has at least two cell segments arranged in a stack. Each cell segment may have a first electrode unit having a first active material electrode, a second electrode unit having a second active material electrode, and an electrolyte layer between the active material electrodes. Variable volume containment may be used to control the inter-electrode spacing within each cell segment. In some embodiments, one or more dynamic flexible gaskets may be included in each cell segment to seal the electrolyte within the cell segment and to deform in preferred directions. In some embodiments, hard stops may set the inter-electrode spacing of the ESD. | 12-18-2014 |