US 12,218,538 B2
Technique for controlling voltage to be supplied to electric appliance
Katsuhito Fujinami, Anjo (JP); Ken Yamauchi, Anjo (JP); and Yasuyuki Fujimoto, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Feb. 25, 2022, as Appl. No. 17/680,459.
Prior Publication US 2022/0278539 A1, Sep. 1, 2022
Int. Cl. H02J 7/00 (2006.01); A41D 1/00 (2018.01); H01M 50/204 (2021.01); H01M 50/247 (2021.01)
CPC H02J 7/0045 (2013.01) [A41D 1/002 (2013.01); H01M 50/204 (2021.01); H01M 50/247 (2021.01); H02J 7/007182 (2020.01); A41D 2400/12 (2013.01); H01M 2220/30 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A voltage control device comprising:
an appliance connector configured to be selectively connected to a first electric appliance or a second electric appliance;
a voltage output circuit configured to (i) receive a direct voltage from a direct-current power source and (ii) output an operating voltage based on the direct voltage, the operating voltage being variable;
a manual switch configured to be manually operated by a user of the voltage control device; and
a controller configured to:
(i) control, in response to the first electric appliance being connected to the appliance connector, the voltage output circuit so as to fix the operating voltage; and
(ii) control, in response to the second electric appliance being connected to the appliance connector, the voltage output circuit so as to vary the operating voltage in accordance with a manual operation applied to the manual switch.