公开(公告)号：US20210351586A1

公开(公告)日：2021-11-11

申请号：US16869620

申请日：2020-05-08

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： MUHAMAD RIDZUAN AZIZAN ,  CHEN KOK YEOH ,  WAI MUN LEE ,  MOHD FAISAL ABDULLAH ,  KOW CHEE CHONG ,  MACWIEN KRISHNAMURTHI

IPC: H02H9/02 ,  H02H1/00 ,  H02H3/08

Abstract: An apparatus and method for providing a selectively reduced voltage to a portable electronic device are disclosed. When a determination is made that an output voltage from a voltage source exceeds a predefined maximum permitted voltage, a plurality of circuitries, including an adaptive active current limiting circuitry, are enabled in order to derive the reduced voltage from the output voltage. The reduced voltage is at least at or below the predefined maximum permitted voltage and is supplied to the portable electronic device by battery circuitry that includes the active current limiting circuitry.

公开(公告)号：US20220399614A1

公开(公告)日：2022-12-15

申请号：US17303961

申请日：2021-06-11

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： MUHAMAD RIDZUAN AZIZAN ,  KOW CHEE CHONG ,  MD REDUAN MD SAAD ,  CHEN KOK YEOH ,  MACWIEN KRISHNAMURTHI

IPC: H01M50/483

Abstract: A battery, method and battery operated portable communication device are provided with protection from excessive current and thermal conditions. A plurality of protection circuits are coupled in series within a common charge/discharge path of the battery. The first protection circuit is configured to block current by opening a switch in response to a voltage drop across the switch and a current sense resistor in the common charge/discharge path. The second protection circuit provides redundancy under conditions where the first switch might fail, where the second switch will block current through the current sense resistor.

公开(公告)号：US20210351600A1

公开(公告)日：2021-11-11

申请号：US16869627

申请日：2020-05-08

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： MUHAMAD RIDZUAN AZIZAN ,  CHEN KOK YEOH ,  WAI MUN LEE ,  MOHD FAISAL ABDULLAH ,  KOW CHEE CHONG ,  MACWIEN KRISHNAMURTHI

IPC: H02J7/00 ,  H01M2/22

Abstract: Battery circuitry forms part of apparatus for connecting a battery power source to a portable electronic device. The battery circuitry is configured to detect a transitioning of an enable signal, caused by actuation of a power switch, from a de-asserted state to an asserted state. In response to detecting the transitioning of the enable signal, the battery circuitry is further configured to open an electrical path within the battery circuitry. The path, when opened, connects the battery power source in a manner that permits powering on of the portable electronic device.