公开(公告)号：US11668756B2

公开(公告)日：2023-06-06

申请号：US17032668

申请日：2020-09-25

Applicant: Google LLC

Inventor： David Wang ,  Lauren Francine Chanen ,  James Robert Lim ,  Pak Heng Lau

IPC: G01R31/392 ,  G01L9/00 ,  H01M10/48 ,  G01R31/389 ,  G01R31/36

CPC classification number: G01R31/392 ,  G01L9/0002 ,  G01R31/3644 ,  G01R31/389 ,  H01M10/48

Abstract: A method for monitoring battery degradation including receiving, from a pressure sensor, a first pressure value associated with a battery pack, comparing the first pressure reading to a first pressure threshold value and if the first pressure reading is greater than the first pressure threshold value, applying a first battery discharge pulse to the battery pack. The method further includes calculating a first internal resistance value of the battery pack in response to the first battery discharge pulse, comparing the first internal resistance value to an initial internal resistance value, and transmitting an alert to an electronic device if the first internal resistance value exceeds the initial internal resistance value.

公开(公告)号：US20220099749A1

公开(公告)日：2022-03-31

申请号：US17032668

申请日：2020-09-25

Applicant: Google LLC

Inventor： David Wang ,  Lauren Francine Chanen ,  James Robert Lim ,  Pak Heng Lau

IPC: G01R31/392 ,  G01R31/389 ,  G01R31/36 ,  H01M10/48 ,  G01L9/00

Abstract: A method for monitoring battery degradation including receiving, from a pressure sensor, a first pressure value associated with a battery pack, comparing the first pressure reading to a first pressure threshold value and if the first pressure reading is greater than the first pressure threshold value, applying a first battery discharge pulse to the battery pack. The method further includes calculating a first internal resistance value of the battery pack in response to the first battery discharge pulse, comparing the first internal resistance value to an initial internal resistance value, and transmitting an alert to an electronic device if the first internal resistance value exceeds the initial internal resistance value.

公开(公告)号：US20230335824A1

公开(公告)日：2023-10-19

申请号：US18044035

申请日：2021-09-02

Applicant: Google LLC

Inventor： David Wang ,  Pak Heng Lau ,  Lauren Francine Chanen ,  James Robert Lim

IPC: H01M10/6571 ,  H01M50/519 ,  H01M10/655 ,  H01M50/24 ,  H01M10/615 ,  H01M10/48 ,  H01M10/637 ,  H01M10/627 ,  H01M50/509

CPC classification number: H01M10/627 ,  H01M10/486 ,  H01M10/615 ,  H01M10/637 ,  H01M10/655 ,  H01M10/6571 ,  H01M50/24 ,  H01M50/509 ,  H01M50/519 ,  H01M2220/10

Abstract: This application is directed to a battery having a heating element. A connector of the battery includes a first terminal, a second terminal, and a heater terminal. One or more rechargeable battery cells are electrically coupled to the first and second terminals of the connector. The heating element is in contact with a subset of the battery cells, and includes a resistive heater path that is electrically coupled to the first and heater terminals of the connector and generates heat to warm the battery when a heater voltage is applied to the heater terminal. A waterproof material is wrapped around an exterior of the heating element and battery cells and prevents ambient water from contacting the heater element and battery cells. The waterproof material includes an opening to allow at least the first and second terminals of the connector to be electrically coupled to a logic board.