New energy vehicles

New energy vehicles is a new automotive product type, because the development

time is not long, the technology is still not mature, so has not yet formed a widely

accepted concept, but it certainly is new energy automobile is compared to the

traditional fuel vehicles, the new energy vehicles, according to the definition of the

scope of the concept size, there are two types of narrow and broad

statement.Generalized: used in gasoline and diesel oil as power source of the

car.Special: a non conventional vehicle fuel as the advanced technology of

powercontrol and drive, the formation of technology has advanced principle, new

technology, new structure of automobile.New energy vehicles, including fuel cell cars,

hybrid cars, hydrogen powered cars and solar car etc..Hybrid electric vehicle is a

vehicle equipped with more than two source:battery, fuel cell, solar cell,Turbine

locomotive.The current hybrid vehicles generally refers to the diesel generator, plus

battery cars.

Advantages:Vehicle starting and stopping, driven only by the battery, do not reach a

certain speed,The engine will not work, therefore, can make the engine has been

maintained in the best condition, good dynamic performance, very low emissions, and

the source and power are the engine, gas can only. Its principle is simply the motor

and engine the reasonable arrangement of power output machine.

Disadvantages:There are two sets of power,Management control system plus two sets

of dynamic,Complex structure,Difficult,The price is high and long distance speed is

not fuel-efficient.Pure electric vehicle is composed entirely of rechargeable battery

(such as lead-acid batteries, nickel cadmium batteries, nickel hydrogen batteries or

lithium ion batteries provide power source for car).Pure electric vehicle motor fuel to

replace machine, low noise, no pollution,and by the use of electrical energy single,

electric control system of hybrid electric vehicle is greatly simplified compared.

Reduces the cost, the price also can compensate the battery. Pure electric vehicle is

mainly used for the airport, community, courts and other places.

Disadvantages: only in certain

range, the market is smaller. The main reason is

because of various categories, the prevailing prices high, life is short, the size and

weight of the large, long charging time, serious shortcomings.Fuel cell vehicles refers

to the hydrogen, methanol as the fuel, the current through the chemical reaction,

depending on the electric motor driven vehicles. The battery power is through the

chemical reaction of hydrogen and oxygen, rather than through the combustion,

directly into electrical energy.The chemical reaction process of fuel cell does not

produce harmful products,therefore the fuel cell vehicle is a car without pollution,

energy conversion efficiency of the fuel cell of high 2 ~ 3 times than the internal

combustion engine, so the use of environmental protection and energy, fuel cell

vehiclesand is an ideal vehicle.Household car is more and more, oil prices more and

more expensive, every car company began to research and development of new

energy vehicles. 1.Introduction

Chery since 2000 we have engaged in the research and development of the new

energy vehicles, through more than ten years of independent innovation, the new

energy vehicles business experienced three important stages of development; From

2001 to 2005, the company with the national 863 project for the carrier, joint top

Chinese universities and research institutes, undertake and completed a number of

national 863 electric vehicle research subject, the major projects in just3 years time,

complete the ISG moderate hybrid and pure electric vehicles of the rational

development model. From 2005 to 2008, approved by ministry of a "by national

energy conservation and environmental protection automotive engineering technology

research center", based on the basic completion of the new energy vehicles of the

industrialization of the research and development, the establishment of a sound energy

saving and new energy vehicle development system, the world first-class new energy

test center, trial-produce center, in the electric car key components and core

technology, the company has formed a set of key parts research, testing, application

and industrialization of calibration ability, in the motor, motor drive system, DC/DC,

advanced power battery, the battery management system, the vehicle controller,

initially forming a batch production ability, have the new energy vehicles, the core

technology of the calibration technology and experiment technology. New energy