Design of a Personal Mobility Device for Elderly Users

Table 6

Comparison of a commercial elderly EV and the EPMD.

Condition	The commercial EV	The EPMD
Motor	Gear motor	BLDC motor
	2 × 250 W	500 W
Battery	Li-ion battery	Li-ion battery
	24 V, 20 Ah, 480 Wh	48 V, 13 Ah, 624 Wh
Charge time	7.41 hr	2.89 hr
Structural material	Aluminum	Carbon steel
EV weight	45 kg	70 kg
Maximum carry weight	100 kg	200 kg
Maximum speed	5 km/hr	25 km/hr
Usable time (5 km/hr)	4.98 hr	3.98 hr
Usable distance (5 km/hr)	24.92 km	19.92 km
Sensor system	No	Yes
EV cost	770 USD	880.4 USD