Gm Global Technolgoy Operations, Inc.

Other

Adc Telecommunications, Inc.

Parallel Limited

Strong Force Iot Portfolio 2016, LLC

Altobridge Limited

Robert D Schmidt

Lance Kazumi Uyehara

Mark F Schutzer

Ilan Vardi

John O'Connell

Rahul BrajeshKumar Jain

Gilad Peleg

Xingcheng Xiao

Siu Bun Chan

QiMing Zhu

Mark William Verbrugge

Gayatri Vyas Dadheech

Chandra S Namuduri

Mei Cai

Anil Kumar Sachdev

Brian James Koch

Fang Dai

James R Salvador

Neeraj S Shidore

Andrew Clay Bobel

Shuru Chen

Jing Gao

Alok Warey

Shuonan Xu

Ratandeep S Kukreja

Daad B Haddad

Jeffrey D Cain

William Osad

Jiagang Xu

Nicholas P Pieczonka

Rahul Jain

Antonio Duaine Ulisse

A device for thermal control of a battery system includes a heating control module configured to generate an alternating current (AC) heating current and heat the battery system to a desired temperature by applying the AC heating current to the battery system over a selected heating time duration. The heating control module is configured to monitor a rate of increase of a temperature of the battery system during the applying, during the heating time duration, perform a periodic impedance measurement, the periodic impedance measurement including application of a measurement signal having a selected frequency range to the battery system for a measurement period, a length of the measurement period select to minimize a difference between a desired rate of increase and the monitored rate of increase, and adjust the AC heating current during the applying based on the temperature and the impedance measurement.

Control of alternating current battery heating using in-situ measurements

A solid-state electrolyte for an electrochemical cell that cycles lithium ions is provided. The solid-state electrolyte includes a sintered layer that includes a plurality of lithiated zeolite particles having pores and a lithium-containing material disposed in at least a portion of the pores of the lithiated zeolite particles. For example, each lithiated zeolite particle has a porosity greater than or equal to about 20 vol. % to less than or equal to about 80 vol. %, and the lithium-containing material occupies greater than or equal to about 20% to less than or equal to about 80% of a total porosity of each lithiated zeolite particle. In certain instances, the sintered layer further includes a superionic additive that is also disposed in a portion of the pores of the lithiated zeolite particles, such that the sintered layer has an ionic conductivity between about 1×10S·cmand about 1×10S·cm.

Solid-state electrolytes including lithiated zeolite particles and lithium-containing materials and methods of forming the same

A dilatometer for measuring battery dilation including: a battery cell with a first electrode and a second electrode; an internal magnetic sensing element; and a magnetic force sensor. The internal magnetic sensing element is configured to move in response to expansion the first electrode and remain stationary in response to expansion of the second electrode during dilation of the battery cell. The magnetic force sensor is stationary relative to the battery cell and configured to sense a change in magnetic force strength between the internal magnetic sensing element and the magnetic force sensor. A controller is configured to measure dilation of the first electrode independent of dilation of the second electrode based on the change in the magnetic force strength between the internal magnetic sensing element and the magnetic force sensor.

Magnetic force dilatometer for measuring dilation of individual electrode

Methods for forming sulfur polyacrylonitrile are provide. In certain variations, the method includes contacting sulfur and polyacrylonitrile to form an admixture, sealing a container holding the admixture, heating the admixture to a first temperature venting the container holding the admixture to release gases generated during the heating of the admixture to the first temperature, re-sealing the container holding the admixture, and heating the admixture to a second temperature. In other variations, the method includes contacting sulfur and polyacrylonitrile to form an admixture, heating the admixture to a first temperature, sealing a container holding the admixture, and heating the admixture to a second temperature. The second temperature is greater than the first temperature.

Method for preparing sulfur-polyacrylonitrile (SPAN)

A monitoring assembly for an electrochemical cell of a secondary lithium battery includes a porous sensory structure and a transducer. The porous sensory structure includes a sensory layer disposed on a major surface of a porous separator and a buffer layer disposed between the sensory layer and a facing surface of a negative electrode layer. The buffer layer electrically isolates the sensory layer from the facing surface of the negative electrode layer. The sensory layer includes an electrically conductive material and is configured to produce a response to an input signal or to a physical stimulus received within the electrochemical cell. The transducer is configured to process the response produced by the sensory layer to generate an output signal indicative of a diagnostic condition within the electrochemical cell.

Electrochemical cell monitoring assembly

An aquarium skimmer device can include a filter body that attaches to a water pump, filter, or power head, wherein the filter body is configured to hold a filter medium for filtering water that passes through the filter body. The skimmer device can also include a funnel holder that attaches to a top of the filter body, and a funnel assembly comprising a funnel. The funnel assembly can be received by the funnel holder and configured to float up and down with respect to the funnel holder with changes in water level, and a wide opening of the funnel is positioned one inch or less below a surface of the water.

Aquarium skimmer devices, systems, and methods

The present disclosure provides an electrochemical cell that includes an electrically conductive material layer, a precursor material disposed on or adjacent to a first surface of the electrically conductive material layer, and an electroactive material layer disposed on or adjacent to the precursor material. In certain variations, the precursor material forms a continuous layer and a solid-electrolyte interface layer is disposed on or adjacent to an exposed surface of the electroactive material layer. In other variations, the precursor material forms a plurality of distinct precursor structures disposed on the first surface of the electrically conductive material layer in a predetermined pattern, such that at least a portion of each distinct precursor structure is unobstructed by the electroactive material layer. The distinct precursor structures are configured to form surface structures that chemically attach the solid-electrolyte interface layer and the electrically conductive material layer.

Current collectors having surface structures for controlling formation of solid-electrolyte interface layers

A pool skimmer device includes float harness that is attached to a cylindrical shaped device, which includes a self-adjusting funnel positioned at the distal end of the extension body, the funnel having a wide opening positioned at the distal end of the extension body and a narrow opening, and a funnel profile extending between the wide opening and the narrow opening, a coarse skimmer basket, a ballast collar and an outlet to the pool's filtration system, in which the outlet can be replaced with a submersible water pump and filter.

Pool skimmer devices, systems, and methods

One embodiment is directed to a system for providing wireless coverage and capacity for a public land mobile network within a building. The system comprises a pico base station comprising multiple transceiver units. The pico base station is installed in the building. The system further comprises a plurality of antennas located within the building. The plurality of antennas are located remotely from the pico base station. The pico base station is communicatively coupled to the public land mobile network. The pico base station is communicatively coupled to the plurality of antennas.

Multiple-TRX pico base station for providing improved wireless capacity and coverage in a building

A pool skimmer device includes a mounting plate configured to attached to a pool skimmer basket, an extension body extending from the mounting plate to a distal end, and a funnel positioned at the distal end of the extension body, the funnel comprising a wide opening positioned at the distal end of the extension body and a narrow opening, and a funnel profile extending between the wide opening and the narrow opening.

Methods of making a solid-state electrochemical cell that cycles lithium ions are provided that include applying a liquid metal composition comprising gallium to a first major surface of either a solid-state electrolyte or a solid electrode (e.g., lithium metal) in the presence of an oxidant and in an environment substantially free of water to reduce surface tension of the liquid metal composition so that it forms a continuous layer over the first major surface. The first major surface having the continuous layer of liquid metal composition is contacted with a second major surface to form a continuous interfacial layer between the solid-state electrolyte and the solid electrode. Solid-state electrochemical cells formed by such methods are also provided, where the metal composition comprising gallium is a liquid in a temperature range of greater than or equal to about 20&#xb0; C. to less than or equal to about 30&#xb0; C.

Liquid metal interfacial layers for solid electrolytes and methods thereof

The present disclosure relates to electroactive materials for use in electrodes of lithium-ion electrochemical cells and methods of making the same, for example, methods for lithiating electroactive materials. A method of lithiating an electroactive material may include dispersing an electroactive material precursor within a room-temperature electrolyte that includes a lithium-based salt and contacting the electrolyte mixture and a lithium source so as to cause the lithium source to ionize and form lithium ions. The lithium ions may react with the electroactive material precursor to form a fully lithiated electroactive material (e.g., greater than 70% of total lithiation). The method further includes, in certain aspects, electrochemically discharging the fully lithiated electroactive material to form a lithiated electroactive material having an optimized lithiation state (e.g., less than or equal to about 40% of a first lithiation state of the fully lithiated electroactive material).

Methods of lithiating electroactive materials

A powered or non-powered pool skimmer device can include a funnel assembly comprising a funnel having a wide opening and a narrow opening, and a funnel profile extending between the wide opening and the narrow opening, a funnel plate to allow the funnel to freely float or be manually adjusted to position the funnel just beneath the water surface, a filter assembly positioned below the funnel assembly, and a main body with no bottom, so water can flow freely into the swimming pool's main filter system, that fits into an existing skimmer in both height and diameter extending along an axis, which can be locked into the skimmer via a skimmer adapter ring, wherein the funnel assembly, the filter assembly, and the pump assembly are positioned within the main body and arranged along the axis.

A method of modifying a carbonate layer formed on a surface of an electrochemical cell component is provided. The surface includes a ceramic oxide. The carbonate layer includes a carbonate and is substantially non-conductive to lithium ions and sodium ions. The method includes contacting the carbonate layer with a modifying agent to form a mixture and causing the modifying agent to incorporate into the carbonate layer and form a modified hybrid layer including a eutectic mixture of the modifying agent and the carbonate. The modified hybrid layer is conductive to lithium ions and sodium ions.

Additive to ceramic ion conducting material to mitigate the resistive effect of surface carbonates and hydroxides

A powered pool skimmer device can include a funnel assembly comprising a the funnel having a wide opening and a narrow opening, and a funnel profile extending between the wide opening and the narrow opening, a filter assembly positioned below the funnel assembly, a pump assembly positioned below the filter assembly, the pump assembly including a pump configured to draw water through the funnel assembly and filter assembly and exhaust it through an exhaust, and a main body extending along an axis, wherein the funnel assembly, the filter assembly, and the pump assembly are positioned within the main body and arranged along the axis.

Growing community of inventors

Redwood City, CA, United States of America

Robert D Schmidt