Power system includes which parts

Pure electric vehicle power system is mainly composed of three parts: electric drive system, power system and auxiliary system.

The electric drive system consists of an electric motor, a controller, a power converter, a mechanical transmission device and wheels. The electric motor acts like an engine in an ordinary car, converting the electrical energy stored in the power battery into kinetic energy to drive the wheels when it is working, or converting the kinetic energy on the wheels into electrical energy and returning it to the power battery when braking is required.

Hybrid Electric Vehicle Powertrain - A hybrid electric vehicle is a vehicle that can derive power from consumable fuel or rechargeable energy, or from an energy storage device. Hybrid electric vehicles in accordance with the power system structure is divided into series hybrid electric vehicles, parallel hybrid electric vehicles, mixed hybrid electric vehicles three.

Tandem hybrid system is the simplest of all hybrid systems, it removes the transmission in ordinary cars, the structure is equivalent to a pure electric car plus a gasoline engine. Because the engine has been controlled by the controller in the optimal speed range when working, so in the middle and low-speed driving. It consumes less fuel than a conventional car. It can save about 30 percent of fuel.

But the series hybrid system also has its obvious disadvantages, its engine for the generator power to go through a second conversion. Will lose a lot of energy, so when the car at high speeds, the series hybrid system will be higher fuel consumption than the ordinary gasoline engine. A parallel hybrid electric vehicle has two systems, an engine and an electric motor, both of which can independently supply torque to the conventional system.

Hybrid hybrid system

A hybrid hybrid system combines a series hybrid system and a parallel hybrid system, and consists mainly of an engine, a generator, an electric motor, a motor controller, a power distributor and a power battery. When its engine is running, the power generated will first be split into two parts via the power distributor, with one part directly driving the vehicle.

The other part drives the generator to generate electricity. Hybrid hybrid powertrain electric vehicles use pure electric and series modes during startup and low-speed driving, when they have the advantage of a series powertrain, which can take full advantage of the electric vehicle's low power output requirements, and efficiently replenish power for the energy storage device.