Electric cars Technical Overview

First, electric vehicles, electric cars Technical Overview

Electric cars electric vehicles refers to the power-driven vehicle with a motor drive the wheels moving in line with the road traffic, safety requirements and regulations of the vehicle. It uses stored in the battery power to initiate. Sometimes a car in the drive to use 12 or 24 batteries, and sometimes need more.

1. Electric car technology features

Non-polluting electric cars electric vehicles, low noise.

Electric cars electric vehicles work without the internal combustion engine vehicle emissions, electric vehicles, electric cars do not produce exhaust pollution, electric vehicles, electric cars on environmental protection and clean air is very useful for electric vehicles electric cars is almost a “Zero.” As we all know, the internal combustion engine vehicle emissions of CO, HC and NOX, particulates, laptop battery manufacturer ozone and other pollutants to form photochemical smog and acid rain, acid fog.

Non-electric cars electric vehicles internal combustion engine noise, motor noise is also smaller than the internal combustion engine. Electric vehicles, electric cars noise on human hearing, neurological, cardiovascular, digestive, endocrine, immune system is also hazardous.

Electric vehicles, energy-efficient electric car, diversification

Electric cars electric vehicles studies have shown that electric vehicles, energy efficiency of electric cars over gasoline engine vehicle. Especially in urban operations, motor vehicle stop-and-go, low speed, electric vehicles, electric cars more suitable. Electric vehicles, electric cars less power consumption when the car stopped, the electric car electric car in the braking process, the motor can be automatically converted to generators, braking deceleration energy to achieve the re-use. Some studies have shown that after the same crude oil refining, power generation to the power plant, after filling into the battery, then battery-powered cars (as VGP-BPS13), their energy efficiency through the use of refined into gasoline, then gasoline engine-driven car, so conducive to conservation energy and reduce carbon dioxide emissions.

On the other hand, electric vehicles, the application of electric cars to be effective in reducing dependence on oil resources may be limited for the more important oil area. Power to the battery can be recharged by coal, natural gas, hydro, nuclear, solar Panel, wind, tidal and other energy conversion. In addition, if the battery at night, you can avoid the peak, is conducive to a balanced power system load, reduce costs.

Simple structure, easy to use maintenance

Electric cars electric vehicles internal combustion engine vehicle than the simple structure, functioning, less transmission components, electric vehicle electrical repair and maintenance workload of small cars. When using AC induction motors, the motors need maintenance and, more importantly, easy manipulation of electric vehicles.

Electric vehicles, electric cars use the high cost of power supply, continued driving a short length

At present, electric vehicles, electric cars such as the internal combustion engine vehicle technology is not perfect, especially for electric cars electric vehicle power supply (batteries) short life span, the use of high cost. Electric vehicle batteries electric cars energy of a small reservoir, a mileage charge is not satisfactory, the price of more expensive electric cars, laptop battery. However, from the perspective of development, with the advances in technology, the human and material resources into the electric car electric cars will be gradually be resolved. Electric vehicles will gradually popular, their prices will inevitably reduce the cost and use.

3, electric vehicles, electric car technology include:

Battery-driven technologies: nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, sodium sulfur batteries, lithium-ion batteries, fuel cells and so on, should have specific power and high specific energy, to meet the power and continued driving mileage requirements: charging time short cycle of charge and more action to facilitate the use and life assurance.

Electric vehicles, electric car motor technology: There are four main motor: DC motor, permanent magnet motors, switched reluctance motor, AC induction motor. Require light weight, high efficiency, good reliability.

Electric vehicles, electric car drive system control and integration of technology: the use of single-chip microcomputer and power devices with a control system, power devices using IGBT (Insulated-Gate Bipolar Transistor).

Electric vehicles, electric car battery technology monitoring and management system
Electric vehicles, electric car charging systems technology
Electric cars electric vehicles and vehicle layout matching techniques

Second, the electric car electric cars at home and abroad the status quo and development trend

Since the nineties the twentieth century, electric vehicles from abroad, the electric car technology, the key focus on battery technology research, the U.S. Big Three auto companies to invest 2.6 billion U.S. dollars, to conduct collaborative research, the United States battery manufacturers USABC joint project also the target point of electric vehicles, electric batteries for cars. The current status of battery technology and electric vehicles, electric cars practical requirements there is still a considerable distance, so that electric vehicles, electric cars in terms of dynamic performance, continued driving mileage, the manufacturing cost and reliability can not be compared to conventional car. Electric vehicles, electric cars basically depend on the prospects for a breakthrough in battery technology. In recent years, Ni-MH, lithium, and other types of fuel cells has been relatively good,laptop battery a lot of money into research, lead-acid, nickel cadmium batteries and other traditional work is also under way to improve.

State Science Commission, the Planning Commission in the “85″, “Ninth Five-Year Plan” was organized during the research topic of electric vehicles, electric vehicles, recently again, the electric car project is included in “Tenth Five-Year Plan”, the domestic automobile enterprises, institutions of higher learning research units to study the electric car to take a positive attitude, through the conversion of electric vehicles, electric cars, many rounds of trial, in pursuit of the “15″ reached the end of the industrialization of electric vehicles.

Third, electric vehicles, electric cars, “15″ objectives and key content

objectives: to address critical technology, the completion of electric vehicles can be practical, the electric car, electric car development, and industrialization.
main elements: the design of electric vehicles; advanced battery technology; drive motor and control system; vehicle monitoring and management system, the environment and supporting the use of technology.