The Patent Literature 3 discloses a high-output non-aqueous electrolyte capacitor.Q:Ĭ++ How to tell if an object has been explicitly deleted? The Patent Literature 2 discloses a hybrid vehicle mounted with a DC-DC converter, a battery pack, a plurality of electric power storage devices and a motor that use a high-density battery as a main power source. The Patent Literature 1 discloses a vehicle battery system in which a battery system is structured to enable charging and discharging by the input of DC current from an external power supply. However, in order to use the electric double layer capacitor for power supply, the electric double layer capacitor should be charged in a short period of time. Thus, energy is supplied by a rechargeable electric double layer capacitor, a fuel cell and the like instead of the lithium-ion battery in order to ensure a high output and high efficiency. On the other hand, in the second method, as a cell voltage of the fuel cell increases, a power generation rate decreases, and as the power generation rate decreases, a cell temperature increases, causing a decrease in cell durability and a decrease in fuel efficiency. However, in the first method, a cost of battery material is increased, causing an increase in cost. In the first method, a battery with large capacity is demanded for the increase in capacity. The electric vehicles (EV) and hybrid vehicles (HEV) may be classified into two groups: a motor in the electric vehicles (EV) is driven by a battery and a motor in the hybrid vehicles (HEV) is driven by a fuel cell.Īs methods of electrifying automobiles, a first method is to increase a capacity of a lithium-ion battery and a second method is to use a metal oxide fuel cell.

Professional.In recent years, to reduce environmental load and global warming, electric vehicles (EV) or hybrid vehicles (HEV), which use a motor to drive a driving shaft to drive a wheel, have been put to practical use.

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