Abstract: A power-supplying battery of an electric vehicle includes a plurality of chargeable batteries that are grouped into at least two first battery groups, and the chargeable batteries of each first battery group are divided into at least two second battery groups that are electrically connected in parallel. Each first battery group is electrically connected to each other in parallel to form a complete set of the power-supplying battery. During charging of the power-supplying battery, an external charging power source is set in electric conduction with the power-supplying battery and a current or a voltage of the charging power source is supplied, in a divided manner, to charge each first battery group and the second battery groups thereof. During discharging of the power-supplying battery, a voltage or a current of each first battery group is combined with each other for output as a total.

Abstract: A charging method for stably charging battery and extending power supply period for an electric vehicle includes: providing, according to a required voltage of a driving motor of an electric vehicle, a first battery group, which includes at least two electrically connected first batteries having a first internal resistance; separately providing at least one second battery, which has a voltage equal to a voltage of the first batteries and has a second internal resistance; electrically connecting each first battery of which a difference between the first internal resistance and the second internal resistance is less than or equal to 1.5? to the second battery; and charging the first battery group and the second battery, with a charging termination point being set as a voltage value of 75%-95% of an average voltage of the first battery group and a voltage value of 75%-95% of the voltage of the second battery.

Abstract: A multiple redundant solar power system comprises a primary solar power set, a secondary solar power set, a first control unit, and a second control unit. The primary solar power set includes a first solar panel, a first battery, and a first electrical output line. The secondary solar power set includes a second solar panel, a second battery, and a second electrical output line. The first control unit is connected between the first battery and the second battery. When the first battery has a low voltage, electrical power can be supplied from the second battery to the first battery. The second control unit is connected between the first battery and an external electrical power source. When the second battery has a low voltage, electrical power can be supplied from the external electrical power source to the first battery.

Abstract: A multiple redundant solar power system comprises a primary solar power set, a secondary solar power set, a first control unit, and a second control unit. The primary solar power set includes a first solar panel, a first battery, and a first electrical output line. The secondary solar power set includes a second solar panel, a second battery, and a second electrical output line. The first control unit is connected between the first battery and the second battery. When the first battery has a low voltage, electrical power can be supplied from the second battery to the first battery. The second control unit is connected between the first battery and an external electrical power source. When the second battery has a low voltage, electrical power can be supplied from the external electrical power source to the first battery.