公开(公告)号：US20230208163A1

公开(公告)日：2023-06-29

申请号：US17561779

申请日：2021-12-24

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Muhamad Ridzuan AZIZAN ,  Kow Chee CHONG ,  Macwien KRISHNAMURHTI ,  Wai Mun LEE ,  Chen Kok YEOH ,  Yik Chuang Joseph TING

IPC: H02J7/00 ,  H01M10/46 ,  H01M10/48 ,  H01M10/42 ,  H01M10/0525

CPC classification number: H02J7/0036 ,  H02J7/0047 ,  H02J7/00032 ,  H01M10/46 ,  H01M10/48 ,  H01M10/425 ,  H01M10/0525 ,  H02J2207/20 ,  H01M2220/30

Abstract: An example system comprises a battery and a battery-powered device. Battery contacts and a data interface are therebetween. The battery includes low-power and high-power circuits to output power, from a cell, to the battery-powered device via the contacts. The high-power circuit outputs power higher than the low-power circuit. A switch(es) connects and disconnects the high-power circuit to/from the contacts, the low-power circuit connected to the contacts when the switch disconnects the high-power circuit. A voltage detector: detects a battery-voltage on the contacts and an output voltage on the data interface; when the output voltage is greater than the battery-voltage, controls the switch to connect the high-power circuit to the contacts; and when the output voltage is below the battery-voltage, controls the switch to disconnect the high-power circuit from the contacts. The battery-powered device provides the output voltage on the data interface as powered from the contacts by the battery.

公开(公告)号：US20210075206A1

公开(公告)日：2021-03-11

申请号：US16563424

申请日：2019-09-06

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Muhamad Ridzuan AZIZAN ,  Macwien KRISHNAMURHTI ,  Kow Chee CHONG ,  Chen Kok YEOH

IPC: H02H1/04 ,  H02H3/093 ,  H02H3/32 ,  H02H9/02

Abstract: A device, battery and method for spark detection based on transient currents is provided. The battery includes: a cell; an interface; a first protection circuit and a second protection circuit. The first protection circuit comprises a first switch between the cell and the interface. The second protection circuit comprises a second switch between the cell and the interface. The first protection circuit is configured to: measure a load current on the cell; and open the first switch according to a first delay time based on the measurement of the load current. The second protection circuit is configured to: measure a transient current on the cell above the load current; and open the second switch according to a second delay time, lower than the first delay time, based on the measurement of the transient current.