Abstract: A system for manufacturing an electrode for a battery cell includes N?1 pairs of rollers configured to press and calendar dry mixing materials to form an active material layer of the electrode, where N is an integer greater than one. The dry mixing materials include an active material, a conductive filler, and a binder. At least one of the N?1 pairs of rollers includes a first roller operating at a first line speed and a second roller operating at a second line speed different than the first line speed. An Nth pair of rollers including a third roller operating at a third line speed and a fourth roller operating at a fourth line speed that is the same as the third line speed to laminate the active material layer to a current collector.

Abstract: An electrode for a battery cell includes a current collector and an active material layer arranged on the current collector. In some examples, the active material layer includes an active material, a conductive additive, a positive temperature coefficient (PTC) material, and a binder. In other examples, the active material layer includes active material with an outer coating including PTC material. In other examples, a PTC layer is arranged on the active material layer.

Abstract: Some embodiments disclosed herein are directed to battery management systems utilizing thin-film pressure sensors to determine anomalous conditions associated with battery modules. Some embodiments may include receiving a pressure measurement from the thin-film pressure sensor disposed between two battery cells in a battery module, and determining, based on the pressure measurement from the thin-film pressure sensor, an abnormal condition associated with the battery module. Other embodiments may be disclosed or claimed.

Abstract: A cathode electrode includes a cathode current collector and a cathode active material layer comprising a plurality of cathode active material particles including nickel and a plurality of nano-particles that are mechanically inlaid on outer surfaces of the plurality of cathode active material particles to form a plurality of inlaid cathode active material particles.

Abstract: A cathode electrode includes a multi-functional cathode current collector including a cathode current collector and a layer including a positive temperature coefficient (PTC) material arranged adjacent to the cathode current collector. A cathode active material layer is arranged on the multi-functional cathode current collector and includes a cathode active material including nickel.

Abstract: A battery cell includes A anode electrodes including an anode active material layer comprising lithium metal active material and an anode current collector, C cathode electrodes including a cathode active material layer comprising LiFePO4 (LFP) active material and a cathode current collector, and S separators arranged between the A anode electrodes and the C cathode electrodes, where A, C, and S are integers greater than one. The S separators comprise a substrate including a coating layer.

Abstract: A solid-state battery cell, such as a lithium-ion cell, is assembled with a solid electrolyte layer member positioned between co-extensive surface layers of an anode active layer member and a cathode active material layer member. At least one of the engaging surfaces of the solid electrolyte layer is not flat. It is formed with a topographical pattern comprising recesses in a flat surface, or a surface of projections and recesses, and placed against a compatibly-shaped, mating surface of the anode layer and/or the cathode layer. The re-shaping of the surface(s) of the solid electrolyte layer and adjoining electrode layer(s) is to significantly increase the effective contact area with the facing layer of electrode material and improve the conduction of ions across the interface. A thin film of interlayer material may be placed between the surfaces of the facing cell members with the specially shaped adjacent faces.

Abstract: An active material component of a composition for forming an electrode of a battery in a dry process is provided. The active material component includes a dry powder including a plurality of grains of an active material. The active material component further includes an electrically conductive filler material attached to each of the plurality of grains.

Abstract: In an embodiment, an electrolyte includes a lithium salt and a cosolvent, where the cosolvent comprises a cyclic carbonate-containing solvent and a linear carbonate-containing solvent. In an embodiment, a battery includes an anode, a cathode, an electrolyte and a separator. The anode includes an anode current collector and an anode active layer. The anode active layer comprises a lithiated silicon oxide or a combination of lithiated silicon oxide and carbon present in an amount of 20 wt % or greater, based on a total weight of the anode active layer. The cathode includes a cathode current collector and a cathode active layer. The electrolyte includes a lithium salt and a cosolvent that includes a cyclic carbonate-containing solvent and a linear carbonate-containing solvent.

Abstract: Aspects of the disclosure include systems and methods for manufacturing thermally stable nickel-rich cathodes. An exemplary method can include providing an active material including a plurality of active material particles. The plurality of active material particles include nickel. A nanoparticle slurry additive having a plurality of nanoparticles is provided. The plurality of nanoparticles include one or more of a thermally stable olivine type material, a thermally stable spinel type material, and a thermally stable manganese-nickel dioxide type material. The method includes forming a slurry by mixing the active material and the nanoparticle slurry additive. The plurality of nanoparticles form a thermal inhibitor layer on and in direct contact with a surface of the plurality of active material particles. A free-standing electrode film is formed by calendering the slurry and the free-standing electrode film is laminating to a current collector to define a thermally stable nickel-rich cathode.

Abstract: A battery that cycles lithium ions includes a negative electrode and an ionically conductive electrolyte. The negative electrode includes an electroactive material comprising a silicon oxide-based material. The electrolyte includes an organic solvent, a lithium salt, and a ternary additive system comprising a phosphite compound, a borate compound, and a sulfate compound.

Abstract: A thermal device comprises a first layer of a non-metallic material that is a good conductor of heat and electricity, that includes a first terminal and a second terminal, and that has a first surface and a second surface; a metallic material disposed on the first surface of the first layer; a first plastic layer disposed on the metallic material; and a second plastic layer disposed on the second surface of the first layer. The first plastic layer and the second plastic layer include a plastic material that is a good conductor of heat.

Abstract: A battery that cycles lithium ions includes a negative electrode and an ionically conductive electrolyte. The negative electrode includes electroactive negative electrode particles embedded in a polytetrafluoroethylene matrix. The electrolyte includes an organic solvent, an inorganic lithium salt, and a functional additive consisting of a chemical compound including a bis(trifluoromethanesulfonimide group and a substituted phenyl group.

Abstract: A bipolar capacitor assisted battery includes a bipolar capacitor including a first capacitor, and a second capacitor. The second capacitor is connected in series with the first capacitor. A lithium ion battery is connected in parallel to the bipolar capacitor.

Abstract: A battery includes: a positive output terminal; a negative output terminal; a first battery module that is connected to the positive output terminal and the negative output terminal and that includes: a first string of first and second types of battery cells that are electrically connected in series, where the first type is different than the second type; and a second battery module that is electrically connected in parallel with the first battery module and that includes: a second string of the first and second types of battery cells that are electrically connected in series.

Abstract: A method includes determining a state of charge (SOC) of the battery and charging the battery using a plurality of charging steps. If the SOC of the battery is less than a predetermined SOC, the battery is charged at a first charge rate (C-rate) in a range from 3 C to 4 C in a first step until the SOC of the battery increases by a first ?SOC. After the first ?SOC, the battery is charged in the constant current mode at a second C-rate of 3?(1/n) C in a second step to (2+n?1)th step until the SOC of the battery increases by a second ?SOC, where n is an integer greater than zero. After the second ?SOC, the battery is charged in the constant current mode at a third C- rate of 2+ (1/n) C in a (2+n)th step until the SOC of the battery increases by a third ?SOC.

Abstract: A state of charge (SOC) balancing system includes: first and second batteries; first and second capacitors; an SOC module configured to determine first and second SOCs of the first and second batteries, respectively; and a switching module configured to selectively, when the first SOC is greater than the second SOC: (i) electrically connect the first and second capacitors in parallel; (ii) electrically connect the first battery to the first and second capacitors while the first and second capacitors are electrically connected in parallel; (iii) electrically disconnect the first battery from the first and second capacitors; (iv) electrically connect the first and second capacitors in series; (v) electrically connect the second battery to the first and second capacitors while the first and second capacitors are electrically connected in series; and (vi) electrically disconnect the second battery from the first and second capacitors.

Abstract: An electrochemical cell that cycles lithium ions includes a positive electrode that includes a positive electroactive material, a negative electrode that includes a silicon-containing negative electroactive material, a separating layer disposed between the positive electrode and the negative electrode, and an electrolyte that is in contact with at least one of the positive electroactive material, the negative electroactive material, and the separating layer. The electrolyte includes greater than or equal to about 0.1 wt. % to less than or equal to about 10 wt. % of a phosphite-type additive.

Abstract: A negative electrode for an electrochemical cell that cycles lithium includes a negative electrode including an electroactive material layer disposed on a current collector that has lithiated silicon oxide (LSO) negative electroactive material at ? about 10 weight % to ? about 30 weight % of a total weight of the electroactive material layer and a carbonaceous negative electroactive material, such as graphite. An electrochemical cell that incorporates such a negative electrode may also include a second electrode comprising a porous positive active material layer comprising a positive lithium containing, nickel-rich electroactive material, such as a lithium nickel manganese cobalt aluminum oxide, a porous separating layer disposed between the first electrode and the second electrode and an electrolyte disposed in pores of the separating layer.

Abstract: A battery cell includes a cathode electrode comprising a cathode coating arranged on a cathode current collector and a separator. A dual function interlayer comprising capacitor material and lithium-ion source material is arranged one of between the cathode coating and the cathode current collector and between the cathode coating and the separator. An anode electrode is arranged adjacent to the separator and comprising an anode coating arranged on an anode current collector.