-
公开(公告)号：US12057592B2
公开(公告)日：2024-08-06
申请号：US17032685
申请日：2020-09-25
Applicant: Google LLC
Inventor： David Wang , Lauren Francine Chanen , James Robert Lim , Neha Ravi Dixit , Alexander P. Wroblewski
IPC: H01M50/209 , H01M50/105 , H01M50/138
CPC classification number: H01M50/209 , H01M50/105 , H01M50/138
Abstract: A battery pack includes a battery, an outer enclosure housing the battery to form a battery pack, and an expandable portion extending from the outer enclosure and allowing the battery pack to expand along an X-axis of the battery pack. The expandable portion includes an inner portion, an outer portion, and a gap portion between the inner portion and the outer portion. The inner portion and the outer portion have a sealing layer to seal off an interior space and the gap portion is devoid of the sealing layer. The sealing layer allows for fluid communication between the gap portion and the interior space when a pressure exerted on the sealing layer exceeds a pressure threshold. The expandable portion includes folds allowing the expandable portion to fold toward the battery pack in an initial folded configuration and expand away from the battery pack in an at least partially unfolded configuration.
-
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.
-
13.发明授权公开(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：US20220285957A1
公开(公告)日：2022-09-08
申请号：US17195305
申请日：2021-03-08
Applicant: Google LLC
Inventor： James Robert Lim , Michael Jonathon Chen , Mitchell Aaron Jones , William Alan Saperstein , David Wang
IPC: H02J7/00
Abstract: Techniques to detect faults in a battery with at least two parallel battery cells. In some examples, a cell may fail or become disconnected. The circuitry of this disclosure may determine whether a battery pack has a fault by measuring battery parameters at the positive and negative terminals. When the circuitry detects a fault, the circuitry may adjust the charge rate so that the charge does not exceed the maximum charge rate of any single cell of the battery pack. In some examples, the circuitry may shut off the charge current to the battery pack to ensure that the charge rate does not exceed the maximum charge rate of any single cell. To avoid false positive fault detection, the circuitry of this disclosure may verify the detected fault and the parameters of the charging cycle before reducing the charging current.
-
公开(公告)号：US20190213866A1
公开(公告)日：2019-07-11
申请号：US16351965
申请日：2019-03-13
Applicant: GOOGLE LLC
Inventor： Tyler Moore , Kelly Veit , Joseph Jaoudi , Geo Hsu , David Wang , David Liem , Terry Simons , Michael Kwiatkowski
CPC classification number: G08B29/02 , G08B19/005 , G08B25/002 , G08B29/14
Abstract: Systems and methods for handling latent anomalies in field devices are described herein. When an anomaly is detected, the system can earmark the presence of the detected anomaly with a flag or other notification, and announce the existence of the anomaly to a user. In some embodiments, a self-test may be distributed to devices in the field that may be potentially affected by the latent anomaly so that those devices can monitor for the presence of the anomaly and take appropriate action if detected.
-
Patent Agency Ranking
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.
-
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.
-
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：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.
-
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.
-
-
-
-
-
-
-
-
-
Search Results
44
records
(took 0.016 seconds)
