公开(公告)号：US20240353361A1

公开(公告)日：2024-10-24

申请号：US18758223

申请日：2024-06-28

Applicant: Google LLC

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

IPC: G01N25/72 ,  G01R31/371 ,  G01R31/392 ,  H01M10/615 ,  H01M10/63

CPC classification number: G01N25/72 ,  G01R31/371 ,  G01R31/392 ,  H01M10/615 ,  H01M10/63

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.

公开(公告)号：US12050190B2

公开(公告)日：2024-07-30

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 ,  H01M10/615 ,  H01M10/63

CPC classification number: G01N25/72 ,  G01R31/371 ,  G01R31/392 ,  H01M10/615 ,  H01M10/63

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.

公开(公告)号：US11680918B2

公开(公告)日：2023-06-20

申请号：US17032679

申请日：2020-09-25

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.

公开(公告)号：US20240258805A1

公开(公告)日：2024-08-01

申请号：US18564466

申请日：2022-12-14

Applicant: Google LLC

Inventor： David Wang ,  Arun Prakash Raghupathy ,  Chang Hong Ye ,  Ford Rylander

IPC: H02J7/00

CPC classification number: H02J7/00309 ,  H02J7/00034 ,  H02J7/0048 ,  H02J7/007194 ,  H02J2310/22 ,  H02J2310/62

Abstract: The present document describes techniques for safe battery charging during high ambient temperatures. These techniques extend device runtime during peak use periods when ambient temperature is high by increasing the possibility for battery charging during high ambient temperature conditions. In an example, a device, during high ambient temperatures, checks future ambient temperatures over a network to identify if the minimum future ambient temperature over a block of time within the next N number of days is predicted to be sufficiently low that, when combined with device-performance throttling, is estimated to reduce the temperature of the battery to below the maximum charge temperature to enable the battery to be safely charged. The device can also use the future ambient temperatures to budget current battery usage by implementing and/or adjusting device-performance throttling.

公开(公告)号：US20220099606A1

公开(公告)日：2022-03-31

申请号：US17032679

申请日：2020-09-25

Applicant: Google LLC

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

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

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.

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.

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.

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.