Power Supplies for Electric Vehicles

The power supply of electric vehicles is mainly divided into two types: main power supply and auxiliary power supply. The main power supply usually refers to the batteries that provide the main driving power for electric vehicles, such as storage batteries and fuel cells. Batteries are suitable for pure electric vehicles, including lead-acid batteries, nickel-metal hydride batteries, sodium sulfur batteries, secondary lithium batteries, air batteries, ternary lithium batteries, etc. Fuel cells are dedicated to fuel cell electric vehicles, including alkaline fuel cells (AFC), phosphate fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC), proton exchange membrane fuel cells (PEMFC), direct methanol fuel cells (DMFC), etc.

The auxiliary power supply is to provide power for other auxiliary devices of electric vehicles, generally 12V or 24V DC low-voltage power supply. It mainly provides the energy required for various auxiliary devices such as power steering, brake force regulation control, lighting, air conditioning, electric Windows and doors.

In addition, there are special types of power supplies, such as fast charging sources and on-board generators, which are often considered power solutions for specific application scenarios, rather than part of the standard configuration of electric vehicles.