What is an EV battery?

Electric vehicle batteries are divided into two categories: battery and fuel cell. The battery is suitable for pure electric vehicles, including lead acid battery, nickel hydrogen battery, sodium sulfur battery, secondary lithium battery, air battery and ternary lithium battery.

Fuel cells are dedicated to fuel cell electric vehicles, including alkaline fuel cells (AFC), phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC), proton exchange membrane fuel cells (PEMFC), and direct methanol fuel cells (DMFC).

Battery function of electric vehicle

There are slight differences with different types of electric vehicles. In pure electric vehicles equipped with batteries only, the role of batteries is the only power source of the vehicle driving system. However, in hybrid electric vehicles equipped with traditional engines (or fuel cells) and batteries, the battery can not only act as the main power source of the vehicle drive system, but also act as an auxiliary power source.

It can be seen that the battery plays the role of the main power source of the vehicle driving system at low speed and during startup; In full load acceleration, it acts as an auxiliary power source; It plays the role of storing energy during normal driving, deceleration and braking.