公开(公告)号：US10944271B1

公开(公告)日：2021-03-09

申请号：US16588021

申请日：2019-09-30

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Ming Feng ,  Benjamin Thomas Gaide

IPC: H02J7/00 ,  H01R13/22 ,  H03K5/24

Abstract: A first device, such as a charger, includes electrical contacts to supply power to a second device, such as a wearable device. The first device includes a detection circuit that measures a sense voltage proportional to an effective resistance, which includes resistances of the contacts, an internal resistance of the second device, and any contaminants between the contacts. When the sense voltage is within a range, the detection circuit determines the second device is compatible and correctly oriented and determines there are insufficient contaminants to alter the effective resistance. The first device de-energizes the contacts while the sense voltage is outside of a voltage range and provides a power supply to one or more of the contacts when the sense voltage is within the voltage range. In some aspects, the detection circuit may delay the power supply for a period of time to avoid false detection events.

公开(公告)号：US10804717B1

公开(公告)日：2020-10-13

申请号：US15832487

申请日：2017-12-05

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Benjamin Thomas Gaide ,  Bryan Holmdahl

IPC: H02J7/00

Abstract: A resettable battery input control apparatus includes disconnect circuitry that allows for a battery or other power source to be disconnected from a load in an electronic device. A processor, such as a power management integrated circuit, may assess operating data indicative of operation of the electronic device. If the processor determines a fault condition, the disconnect circuitry is activated. In the event that the processor itself fails, the disconnect circuitry will fail safe and disconnect the battery from the load. Once disconnected, the battery remains disconnected until external power is applied. In one implementation the disconnect circuitry may comprise a field-effect transistor acting as a low-side switch that operates to disconnect the negative terminal of the battery from the load.

公开(公告)号：US11119142B1

公开(公告)日：2021-09-14

申请号：US15888983

申请日：2018-02-05

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Benjamin Thomas Gaide ,  Donald Joseph Brunnett

IPC: G01R31/08 ,  G01R27/16 ,  G01R17/02 ,  G01R31/58 ,  H01B9/00

Abstract: A device may utilize a cable that includes connectors and conductors to transfer signals, electrical power, or both. Some cable failures result in an inability to transfer signals. Other failures may result from different cables being used at different times, resulting in a mismatch in which the cable is rated to transfer less power than what could otherwise be delivered by the power source. Parameters, such as cable impedance, transmitter gain, signal conditioning, and so forth that are associated with use of the cable are monitored at different times. If the values of these parameters from one time to another exceed a threshold value, a fault in the cable is determined. A notification about the impending or actual failure of the cable may be presented, and a suitable cable may be recommended for purchase. For example, a hyperlink may be provided to allow for purchase of the suitable cable.

公开(公告)号：US11662391B1

公开(公告)日：2023-05-30

申请号：US17073573

申请日：2020-10-19

Applicant: Amazon Technologies, Inc.

Inventor： Ramez Nachman ,  Don Brunnett ,  Bryan Holmdahl ,  Benjamin Thomas Gaide

IPC: G01R31/385 ,  G01R31/367 ,  H01M10/44 ,  H01M10/42 ,  H01M50/569

CPC classification number: G01R31/385 ,  G01R31/367 ,  H01M10/4285 ,  H01M10/446 ,  H01M50/569

Abstract: Systems, methods, and computer-readable media are disclosed for dynamic adjustments to battery parameters using battery metrics. The device may be configured to determine a first value indicative of a battery voltage output during a first time interval, determine a second value indicative of a temperature during the first time interval, and determine a first acceleration factor for the battery during the first time interval based at least in part on the first value and the second value. The device may determine an adjusted number of charge cycles completed during the first time interval using the first acceleration factor, determine a total adjusted number of charge cycles of the battery, determine that the total adjusted number of charge cycles is equal to or greater than a first threshold, and cause the first maximum output voltage value to be reduced.

公开(公告)号：US10671136B1

公开(公告)日：2020-06-02

申请号：US15875413

申请日：2018-01-19

Applicant: Amazon Technologies, Inc.

Inventor： Benjamin Thomas Gaide

IPC: G06F1/00 ,  G06F1/28 ,  G06F1/3206 ,  G06F1/3287

Abstract: This disclosure describes techniques for detecting and recovering from faults in computing devices. The faults being detected may consume amounts of power within normal consumption parameters of the device, such as under upper-current protection limits of a power adapter. The power adapter may include components which prevent power from being supplied to the device if the current drawn by the device is not periodically reduced to less than a threshold amount of current. The device may include logic which causes the device to periodically reduce the current drawn from the power adapter to less than the threshold amount of current to reset a timer of the components of the power adapter. Thus, the device may periodically reduce the current drawn when the device is operating normally, but fail to reduce the current drawn when experiencing a fault, which results in the power adapter shutting off power to the faulted device.

公开(公告)号：US20240097462A1

公开(公告)日：2024-03-21

申请号：US17940509

申请日：2022-09-08

Applicant: Amazon Technologies, Inc.

Inventor： Mohammed Sameed Shafi ,  Benjamin Thomas Gaide ,  Marko Bundalo

IPC: H02J7/00 ,  H02J50/90

CPC classification number: H02J7/0036 ,  H02J7/0048 ,  H02J50/90

Abstract: Systems, methods, and computer-readable media are disclosed for improved wireless battery charging. The device may include a battery, and may be configured to determine that the battery is de-coupled from a wireless charger at a first time, determine that the battery is coupled to the wireless charger at a second time, determine that a first elapsed time between the first time and the second time is equal to or less than a first threshold, and cause charging of the battery to be disabled for a first time duration.

公开(公告)号：US11451068B1

公开(公告)日：2022-09-20

申请号：US16551170

申请日：2019-08-26

Applicant: Amazon Technologies, Inc.

Inventor： Ramez Nachman ,  Bryan Holmdahl ,  Don Brunnett ,  Benjamin Thomas Gaide

IPC: H02J7/00 ,  G01K1/14 ,  G01R31/3835 ,  G01R31/367

Abstract: Systems, methods, and computer-readable media are disclosed for battery-specific adjustments to maximum battery voltage. In one embodiment, an example device may include a battery, at least one memory that stores computer-executable instructions, and at least one processor. The device may be configured to determine a first value indicative of a first length of time the battery was at a first voltage and a first temperature, determine a second value indicative of a second length of time the battery was at a second voltage and a second temperature, determine that a sum of the first value and the second value satisfies a first threshold, and cause a maximum output voltage value to be reduced from a first maximum output voltage value to a second maximum output voltage value.