公开(公告)号：US10884475B1

公开(公告)日：2021-01-05

申请号：US15698562

申请日：2017-09-07

Applicant: Amazon Technologies, Inc.

Inventor： John Wang ,  Matthew Wong ,  Marko Bundalo ,  Yuting Yeh ,  Kamran Mohajer ,  Vidhyananth Ramasamy Venkatasamy ,  Girish Sidhmalswamy Ghongdemath ,  Shuoqin Wang ,  Jason Allan Graetz

IPC: G06F1/32 ,  G01R31/36 ,  G06F1/3212 ,  G06F1/3287 ,  G01R31/367 ,  G01R31/389 ,  G01R31/3842

Abstract: A portable electronic device determines a battery available power for the device's battery and manages device power usage based upon the battery available power. The device includes a battery and a controller. The controller is configured to receive a first voltage value for the battery at a first time, a first current value for the battery, a second voltage value for the battery at a second time, and a second current value for the battery. It is determined that a time difference between the first time and the second time exceeds a predetermined time threshold. An estimated resistance of the battery is determined based at least on a first difference between the first current value and the second current value and a second difference between the first voltage value and the second voltage value. Real-time power usage of the device is controlled based on the estimated resistance of the battery.

公开(公告)号：US10361406B1

公开(公告)日：2019-07-23

申请号：US15277867

申请日：2016-09-27

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： David Wang ,  Ramez Nachman ,  James Robert Lim ,  Bryan Holmdahl ,  Yuting Yeh ,  Matthew Wong

IPC: H01M14/00 ,  H01M2/02 ,  H01M2/08 ,  H01M10/0525 ,  H01M10/42

Abstract: A power source, designed to be bent or flexed during use, may include a layer of anode material having a length greater than a layer of cathode material to accommodate for movement of the cathode or anode layers during flexing of the power source. An enclosure containing the cathode and anode materials may include an inner protective layer proximate to the cathode and anode layers and a water-impermeable layer external to the inner protective layer. The water-impermeable layer may have a pleated or corrugated configuration that may be extended when the power source is bent under application of a flexure stress, preventing damage or deformation to the water-impermeable layer.