US 12,216,176 B2
Distributed battery property measurement system
Yijing Lin, Beijing (CN); and Yiwei Bai, Shanghai (CN)
Assigned to Analog Devices International Unlimited Company, Limerick (IE)
Filed by Analog Devices International Unlimited Company, Limerick (IE)
Filed on Dec. 9, 2022, as Appl. No. 18/064,051.
Claims priority of application No. PCT/CN2021/137081 (WO), filed on Dec. 10, 2021.
Prior Publication US 2023/0184847 A1, Jun. 15, 2023
Int. Cl. G01R 31/396 (2019.01); G01R 31/3842 (2019.01); G01R 31/389 (2019.01); G01R 31/392 (2019.01); H02J 7/00 (2006.01)
CPC G01R 31/396 (2019.01) [G01R 31/3842 (2019.01); G01R 31/389 (2019.01); G01R 31/392 (2019.01); H02J 7/0047 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A battery management system comprising:
a host microcontroller, operated in accordance with a first clock signal;
a first sensor, configured to measure a first value of a first group of one or more cells in a battery system;
a first analog front end (AFE) circuit, wherein the first AFE circuit is operated in accordance with a second clock signal that is unsynchronized with the first clock signal, the first AFE circuit comprising:
a first pulse-width modulation (PWM) controller, configured to at least one of enable or power on the first sensor while a first PWM signal from the first PWM controller is in a first state, and configured to at least one of disable or power off the first sensor while the first PWM signal is in a second state;
a first storage register, configured to receive a representation of the first value measured while the first sensor is on and enabled, and configured to store the received first value until another representation of the first value is received; and
wherein the first AFE circuit transfers a representation of a value in the first storage register to the host microcontroller in response to a request from the host microcontroller.