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.

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.

公开(公告)号：US11934285B2

公开(公告)日：2024-03-19

申请号：US17151015

申请日：2021-01-15

Applicant: GOOGLE LLC

Inventor： Haoxing Zhang ,  Dietrich Shing-Quan Ho ,  Hung-Yang Lee ,  William Saperstein

IPC: G06F11/30 ,  G06F1/3287 ,  G06F13/20 ,  G06F13/40 ,  G06F13/42 ,  H04N23/60

CPC classification number: G06F11/3051 ,  G06F1/3287 ,  G06F13/20 ,  G06F13/4022 ,  G06F13/4068 ,  G06F13/4081 ,  G06F13/4282 ,  G06F13/4291 ,  H04N23/60 ,  G06F2213/0016

Abstract: An accessory interface for an electronic host device includes a digital communication bus including a plurality of communication lines configured to pass data between the electronic host device and an electronic accessory device. The accessory interface further includes detection circuitry selectively coupled to the plurality of communication lines via a multiplexer and configured to detect analog voltage levels across the plurality of communication lines, determine a device type of the electronic accessory device based on the detected analog voltage levels, and control the multiplexer to couple the plurality of communication lines to a host processor of the electronic host device upon determining the device type of the electronic accessory device. The host processor is configured to receive the device type of the electronic accessory device and transmit data via the plurality of communication lines to the electronic accessory device in accordance with the device type of the electronic accessory device.

公开(公告)号：US20210376625A1

公开(公告)日：2021-12-02

申请号：US17222230

申请日：2021-04-05

Applicant: Google LLC

Inventor： James Robert Lim ,  David Wang ,  Bonnie Yip ,  Haoxing Zhang

IPC: H02J7/00 ,  H01M10/42 ,  H02H7/18

Abstract: This application is directed to a battery protection system including a sense resistor, a comparator, a switching component, and a protection integrated circuit (PIC). The sense resistor is electrically coupled in series with one of a plurality of rechargeable battery cells that are coupled in parallel in a battery. The comparator is coupled to the sense resistor and configured to compare a voltage drop across the sense resistor with a reference voltage to determine whether a subset of the rechargeable battery cells is not charging in the battery. The switching component is coupled to the battery, while the PIC is coupled to the comparator and the switching component. The PIC is configured to control charging and discharging of the battery including disabling the battery from being charged in accordance with a determination that a subset of the rechargeable battery cells is not charging in the battery.

公开(公告)号：US11482872B2

公开(公告)日：2022-10-25

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.

公开(公告)号：US20220232154A1

公开(公告)日：2022-07-21

申请号：US17151015

申请日：2021-01-15

Applicant: GOOGLE LLC

Inventor： Haoxing Zhang ,  Dietrich Shing-Quan Ho ,  Hung-Yang Lee ,  William Saperstein

IPC: H04N5/232 ,  G06F13/20 ,  G06F13/42 ,  G06F1/3287

Abstract: An accessory interface for an electronic host device includes a digital communication bus including a plurality of communication lines configured to pass data between the electronic host device and an electronic accessory device. The accessory interface further includes detection circuitry selectively coupled to the plurality of communication lines via a multiplexer and configured to detect analog voltage levels across the plurality of communication lines, determine a device type of the electronic accessory device based on the detected analog voltage levels, and control the multiplexer to couple the plurality of communication lines to a host processor of the electronic host device upon determining the device type of the electronic accessory device. The host processor is configured to receive the device type of the electronic accessory device and transmit data via the plurality of communication lines to the electronic accessory device in accordance with the device type of the electronic accessory device.

公开(公告)号：US20240313268A1

公开(公告)日：2024-09-19

申请号：US18122878

申请日：2023-03-17

Applicant: Google LLC

Inventor： James Robert Lim ,  Shang Shi ,  Haoxing Zhang ,  Kelly Jitsuo Tsudama

IPC: H01M10/42 ,  G01R31/36 ,  G06F1/16

CPC classification number: H01M10/4221 ,  G01R31/3646 ,  G06F1/1635

Abstract: The present document describes techniques associated with right-to-repair battery-replacement methodologies and applications thereof. These techniques include detecting a replacement battery in an electronic device (a new battery or the same battery reinstalled), authenticating the replacement battery, and monitoring battery characterization and health of the replacement battery. Using these techniques fulfills sustainability and right-to-repair options, aligning with customer rights and government regulations. Further, these techniques enable replacement of an embedded battery in a user's device and detection that the replacement battery was installed and is safe for use by the device. A battery health monitor may be implemented on the device to monitor the health of the replacement battery. In some aspects, the battery health monitor may be a subscription-based service implemented via an application executed on the device or via a system-level application.

公开(公告)号：US20230246470A1

公开(公告)日：2023-08-03

申请号：US18159553

申请日：2023-01-25

Applicant: Google LLC

Inventor： James Robert Lim ,  David Wang ,  Haoxing Zhang ,  Shang Shi

IPC: H02J7/00 ,  G01R19/165 ,  G01R31/3835

CPC classification number: H02J7/007182 ,  H02J7/0029 ,  G01R19/16542 ,  G01R31/3835

Abstract: The present document describes battery zero-voltage (0V) detection methodologies and applications thereof. These techniques detect the occurrence of the 0V condition and enable the device to continue operation after one 0V condition. These techniques may, however, shut down the device after detecting a second occurrence of the 0V condition of the battery. In an aspect, a combination of hardware and software is used at a system side of a device, when the device is connected to an external power source, to detect a 0V condition and/or distinguish the 0V condition from an undervoltage-protection (UVP) condition.

公开(公告)号：US11637434B2

公开(公告)日：2023-04-25

申请号：US17222230

申请日：2021-04-05

Applicant: Google LLC

Inventor： James Robert Lim ,  David Wang ,  Bonnie Yip ,  Haoxing Zhang

IPC: H02J7/00 ,  H01M10/42 ,  H02H7/18

Abstract: This application is directed to a battery protection system including a sense resistor, a comparator, a switching component, and a protection integrated circuit (PIC). The sense resistor is electrically coupled in series with one of a plurality of rechargeable battery cells that are coupled in parallel in a battery. The comparator is coupled to the sense resistor and configured to compare a voltage drop across the sense resistor with a reference voltage to determine whether a subset of the rechargeable battery cells is not charging in the battery. The switching component is coupled to the battery, while the PIC is coupled to the comparator and the switching component. The PIC is configured to control charging and discharging of the battery including disabling the battery from being charged in accordance with a determination that a subset of the rechargeable battery cells is not charging in the battery.

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.