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    Battery Protection Systems for Detecting Conductive Liquid Ingress and Associated Devices and Methods
    33.
    发明申请
    Battery Protection Systems for Detecting Conductive Liquid Ingress and Associated Devices and Methods 有权

    公开(公告)号：US20230066939A1

    公开(公告)日：2023-03-02

    申请号：US18047521

    申请日：2022-10-18

    Applicant: Google LLC

    Inventor： James Robert Lim ,  Haoxing Zhang ,  David Wang ,  Dietrich Shing-Quan Ho ,  Yuanyuan Song

    IPC: H02J7/00

    Abstract: This application is directed to an electronic device powered by one or more rechargeable battery cells. The electronic device includes a first negative temperature coefficient (NTC) thermistor proximate to the battery cells, and an open capacitor coupled in parallel with the NTC thermistor. The open capacitor has an open area and two electrodes that are at least partially exposed via the open area and electrically isolated. The electronic device further includes a control circuit coupled to the NTC thermistor and the open capacitor. The control circuit is configured to detect a voltage drop across the NTC thermistor and the open capacitor if conductive liquid enters the open area of the capacitor and electrically connects the two electrodes that are at least partially exposed via the open area.

    Secure communication in mobile digital pages
    35.
    发明授权
    Secure communication in mobile digital pages 有权

    公开(公告)号：US11166155B2

    公开(公告)日：2021-11-02

    申请号：US16466203

    申请日：2019-05-06

    Applicant: Google LLC

    Inventor： Jay Akkad ,  Nikhil Rao ,  Anshul Gupta ,  David Wang ,  Ian Baker

    IPC: H04L29/06 ,  H04W12/03 ,  G06F16/22 ,  G06F9/54 ,  G06F21/62 ,  G06F21/64

    Abstract: Secure communication in mobile digital pages is provided. The system receives an electronic document and validates the electronic document for storage in a cache server. The system receives a request for the electronic document and provides it to a viewer component on a client computing device. The viewer component loads the electronic document in an iframe. The viewer component executes a runtime component to receive, via a secure communication channel, a tag from the electronic document. The system receives the tag and selects a data value for transmission to the viewer component. The viewer components provides the data value to cause the runtime component to execute an action with the data value.

    Extending Battery Life After Long-Term and High-Temperature Storage
    36.
    发明公开
    Extending Battery Life After Long-Term and High-Temperature Storage 审中-公开

    公开(公告)号：US20240356357A1

    公开(公告)日：2024-10-24

    申请号：US18253288

    申请日：2022-10-26

    Applicant: Google LLC

    Inventor： James Robert Lim ,  Chang Hong Ye ,  David Wang ,  Yuandan Li

    IPC: H02J7/00

    CPC classification number: H02J7/007194 ,  H02J7/0048 ,  H02J7/005 ,  H02J7/0069

    Abstract: The present document describes techniques for extending battery life after long-term and high-temperature storage. These techniques delay charging of a battery to detect battery conditions and determine whether the battery was exposed to high temperatures while in an idle or low-power state for a long period of time. These techniques include a methodology to relax and refresh an anode surface of the battery, after high-temperature storage, through distinct and tailored discharges prior to beginning a normal charge profile. These techniques can be applied to a wide range of chemistry platforms, which may have kinetic (Li-ion) limitations, to extend the longevity of the battery by reducing lithium plating and capacity degradation caused by long-term, high-temperature storage.

    Thermal Gradient Battery Monitoring System and Methods
    37.
    发明公开
    Thermal Gradient Battery Monitoring System and Methods 审中-公开

    公开(公告)号：US20230304951A1

    公开(公告)日：2023-09-28

    申请号：US18312477

    申请日：2023-05-04

    Applicant: Google LLC

    Inventor： David Wang ,  Arun Raghupathy ,  James Robert Lim ,  Ihab A. Ali ,  Chang Hong Ye

    IPC: G01N25/72 ,  G01R31/371 ,  G01R31/392

    CPC classification number: G01N25/72 ,  G01R31/371 ,  G01R31/392

    Abstract: A battery pack includes a battery, a first temperature sensor configured to provide a first temperature value associated with a temperature of the battery, a heat source disposed proximate to the battery and configured to heat the battery, a second temperature sensor configured to provide a second temperature value associated with a temperature of the heat source, and a control board coupled to the first temperature sensor and the second temperature sensor, wherein the control board is configured to receive the first temperature value and the second temperature value. The control board is configured to compare the first temperature value and the second temperature value to determine a temperature gradient between the battery and the heat source and transmit an alert if the temperature gradient exceeds a first temperature gradient threshold.

    SYSTEMS AND METHODS FOR MONITORING HIGH CHARGE LEVELS IN RECHARGEABLE BATTERIES
    39.
    发明申请
    SYSTEMS AND METHODS FOR MONITORING HIGH CHARGE LEVELS IN RECHARGEABLE BATTERIES 有权

    公开(公告)号：US20220239134A1

    公开(公告)日：2022-07-28

    申请号：US17319815

    申请日：2021-05-13

    Applicant: Google LLC

    Inventor： Michael Jonathon Chen ,  William Alan Saperstein ,  James Robert Lim ,  David Wang

    IPC: H02J7/00

    Abstract: An indexed sequence of bits in a buffer is allocated for tracking a battery charging state. The indexed sequence of bits has a first number of bits. A battery voltage of a rechargeable battery is sampled at a sampling rate. For each sampled battery voltage, the battery voltage is compared with a voltage threshold. A next bit position in the indexed sequence of bits is identified. In accordance with a determination that a comparison result is true, a predefined first value is added to the next bit position. A second number of bits that are filled with the predefined first value is determined. A ratio between the second number and the first number is also determined. In accordance with a determination that the ratio exceeds a threshold step-down ratio, a battery charge voltage is stepped down. The rechargeable battery is charged to a step-down voltage.

    Geolocation Based Battery Settings
    40.
    发明申请
    Geolocation Based Battery Settings 有权

    公开(公告)号：US20220140627A1

    公开(公告)日：2022-05-05

    申请号：US17084517

    申请日：2020-10-29

    Applicant: GOOGLE LLC

    Inventor： David Wang ,  James Robert Lim ,  Chang Hong Ye ,  Arun Prakash Raghupathy

    IPC: H02J7/00

    Abstract: A battery provisioning method is implemented by an outdoor electronic device having a rechargeable battery. The electronic device obtains geolocation information of a geographic location where the electronic device is located. The electronic device further obtains outdoor temperature information of the geographic location based on the geolocation information. A battery setting of the rechargeable battery is determined based on the outdoor temperature information, and used to provision the rechargeable battery of this electronic device. In some implementations, the rechargeable battery is provisioned with an upper limit for a state of charge at each time of installing and initializing the electronic device. During normal operation, the rechargeable battery of the electronic device is charged up to the upper limit for the state of charge, while the upper limit for the state of charge of the rechargeable battery may be updated periodically or upon request.

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