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公开(公告)号：US12149106B2
公开(公告)日：2024-11-19
申请号：US18405408
申请日：2024-01-05
Applicant: Google LLC
Inventor： Michael Jonathon Chen , William Alan Saperstein , James Robert Lim , David Wang
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.
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公开(公告)号：US20240283179A1
公开(公告)日：2024-08-22
申请号：US18638231
申请日：2024-04-17
Applicant: Google LLC
Inventor： David Wang , Chien-Yueh Tung , Hsi Pin Chuang , James Robert Lim
CPC classification number: H01R12/79 , H05K1/028 , H05K1/189 , H01R43/26 , H05K2201/10037 , H05K2201/10189 , H05K2201/10522 , H05K2201/10545
Abstract: The disclosure describes a battery connector that includes a bendable axis configured to enable a first portion of the battery connector to be electrically connected to a corresponding connector prior to connecting a second portion. A flexible printed circuit may connect the first portion to the second portion and the bendable axis may be located along the flexible printed circuit. A hinge may connect the first portion to the second portion and enable the first portion to bend with respect to the second portion. A flexible printed circuit connected to the battery connector may enable the battery connector to wrap around an edge of a printed circuit board so that the first portion of the battery connector is connected to a first side of the printed circuit board and the second portion of the battery connector is connected to a second side of the printed circuit board.
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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.
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公开(公告)号：US11689033B2
公开(公告)日：2023-06-27
申请号：US17228872
申请日：2021-04-13
Applicant: Google LLC
Inventor： Haoxing Zhang , David Wang , James Robert Lim , Dietrich Shing-Quan Ho
IPC: H02J7/00
CPC classification number: H02J7/0029 , H02J7/0047 , H02J7/0068
Abstract: This application is directed to protecting a battery or battery by a battery protection system including two distinct protection integrated circuits (PICs). The two PICs are configured to determine whether a drive current of the battery is at fault and generate distinct switching signals indicating whether the drive current of the battery is at fault. The two PICs are interchangeable with each other. The battery protection system further includes control logic and two switching components. The control logic is configured to combine the switching signals provided by the two PICs to provide a combined switching signal. Each switching component is coupled to the control logic and configured to control a current path of charging and discharging the battery based on the combined switching signal.
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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.
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Patent Agency Ranking
公开(公告)号：US20220224128A1
公开(公告)日：2022-07-14
申请号：US17144807
申请日：2021-01-08
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.
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公开(公告)号：US20210376623A1
公开(公告)日：2021-12-02
申请号：US17228872
申请日：2021-04-13
Applicant: Google LLC
Inventor： Haoxing Zhang , David Wang , James Robert Lim , Dietrich Shing-Quan Ho
IPC: H02J7/00
Abstract: This application is directed to protecting a battery or battery by a battery protection system including two distinct protection integrated circuits (PICs). The two PICs are configured to determine whether a drive current of the battery is at fault and generate distinct switching signals indicating whether the drive current of the battery is at fault. The two PICs are interchangeable with each other. The battery protection system further includes control logic and two switching components. The control logic is configured to combine the switching signals provided by the two PICs to provide a combined switching signal. Each switching component is coupled to the control logic and configured to control a current path of charging and discharging the battery based on the combined switching signal.
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公开(公告)号：US12255292B2
公开(公告)日：2025-03-18
申请号：US18606897
申请日：2024-03-15
Applicant: Google LLC
Inventor： James Robert Lim , Wei Li , Brian Conner , Brett Wilson
Abstract: An example outdoor mounted device includes a first battery configured to operate at a low temperature range that at least includes negative 20 Celsius; a second battery configured to operate at a high temperature range; a temperature sensor; and processing circuitry configured to: determine, based on data received from the temperature sensors, a current temperature; responsive to determining that the current temperature is within the low temperature range, cause one or more components of the computing device to operate using electrical energy sourced from the first battery; and responsive to determining that the current temperature is within the high temperature range, cause the one or more components of the computing device to operate using electrical energy sourced from the second battery.
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公开(公告)号：US20240372376A1
公开(公告)日：2024-11-07
申请号：US18651359
申请日：2024-04-30
Applicant: Google LLC
Inventor： David Wang , James Robert Lim
IPC: H02J7/00 , G01R31/367 , G01R31/371 , H01M10/42 , H01M50/574 , H01M50/584
Abstract: The present document describes methods and systems for battery authentication. In aspects, the battery includes an identifier (ID) resistor integrated into the battery label and having at least one exposed resistor contact. The location of the resistor contact can be used for mechanical keying for identification of the battery. The ID resistor has a resistance value that corresponds to a type of the battery. To detect the ID resistor, a device can have electrical contacts (e.g., pogo pins) that are exposed in a battery housing and that electrically connect to the resistor contact(s) of the battery. The device can use a lookup table to identify the type of the battery based on the resistance value of the ID resistor. Such identification of the type of the battery enables authentication of the battery to the device and initiation of one or more functions based on whether the battery is valid.
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10.发明授权公开(公告)号：US12051926B2
公开(公告)日：2024-07-30
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
CPC classification number: H02J7/0031 , H02J7/0013
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.
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