US 11,940,338 B2
Electric-carrier power-supply device and method for detecting potential power failure
Chen Yi Liang, New Taipei (TW); and Yung Chen Chang, New Taipei (TW)
Assigned to WISTRON CORP., New Taipei (TW)
Filed by Wistron Corp., New Taipei (TW)
Filed on Aug. 25, 2022, as Appl. No. 17/822,208.
Prior Publication US 2023/0400367 A1, Dec. 14, 2023
Int. Cl. G01L 1/18 (2006.01); G01R 31/3835 (2019.01); B60L 50/60 (2019.01)
CPC G01L 1/18 (2013.01) [G01R 31/3835 (2019.01); B60L 50/60 (2019.02)] 20 Claims
OG exemplary drawing
 
1. An electric-carrier power-supply device, for use in an electric carrier, the electric-carrier power-supply device comprising:
a piezoresistive sensor;
a battery interface, connected to an on-board battery and receiving power from the on-board battery; and
a power-management unit (PMU), controlling power to a motor of the electric carrier,
wherein a piezoresistive strain gage is disposed between a contact area between the battery interface and the on-board battery, and detects a pressure value of the contact area;
wherein the piezoresistive sensor receives the pressure value detected by the piezoresistive strain gage, and converts the pressure value into a resistance value;
wherein a resistance-value-determination signal is generated by the piezoresistive sensor;
wherein the power-management unit provides power to the motor in response to the resistance-value-determination signal which is determined by the power-management unit as within a safe resistance value range.