US 12,267,036 B2
Method and system for controlling fan, and electronic device employing method
Kuan-Ming Wang, New Taipei (TW); Yung-Ping Lin, New Taipei (TW); and Po-Tsun Kuo, New Taipei (TW)
Assigned to CHAMP TECH OPTICAL (FOSHAN) CORPORATION, Foshan (CN); and Foxconn Technology Co., Ltd., New Taipei (TW)
Filed by CHAMP TECH OPTICAL (FOSHAN) CORPORATION, Foshan (CN); and Foxconn Technology Co., Ltd., New Taipei (TW)
Filed on Aug. 18, 2023, as Appl. No. 18/235,625.
Claims priority of application No. 202310892595.5 (CN), filed on Jul. 19, 2023.
Prior Publication US 2025/0030359 A1, Jan. 23, 2025
Int. Cl. H02P 7/29 (2016.01); F04D 27/00 (2006.01)
CPC H02P 7/2913 (2013.01) [F04D 27/004 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A fan control method applied to a control device, the control device being provided with a pulse width modulation (PWM) controller and being configured to control a plurality of fans arranged in a plurality of working areas, the fan control method comprising:
presetting a plurality of fan operation frequencies, wherein each of the plurality of fan operation frequencies corresponds to different working areas;
receiving a fan operation request and adjusting a frequency of the PWM controller to a first objective frequency based on the fan operation request, wherein the first objective frequency is one of the plurality of fan operation frequencies; and
sending the first objective frequency to the plurality of fans to drive a first fan of the plurality of fans to run, wherein the first fan is arranged in a first objective working area, and the first objective working area is one of the plurality of working areas corresponding to the first objective frequency.