First We Should Develop Dual-Mode EV

A taxi with a displacement of 1.6 liters is different from a private car, for operating time of a private car is little. It is possible that operating time of a private car is 2 to 3 hours, while that of a taxi is 22 hours. As a result, fuel consumption and emissions of a taxi are equivalent to 10 private cars. Fuel consumption and emissions of a bus are equivalent to that of 30 to 40 private cars. Where oil comes from? Where emissions will go? These are the questions we have to take into serious account. Therefore, from an economic point of view, I think China should first develop electric buses. My opinion is to give priority to the development of pure electric buses.

　　We all know that the public transportation’s requirements for battery, especially fixed route, fixed region and fixed time, then the Chinese government can take care of them. Unlike private cars, government can affect buses. To conclude, I recommend first develop electric buses.

　　Private cars are used to go to work and travel. At this time it is necessary for us to develop dual-mode electric vehicles. Chinese government can’t build many charging stations in short time, or it is impossible to cover all cities at once. So, I think that in this field we can focus on the development of dual-mode electric vehicles, which has certain market demands. Dual-mode electric vehicles not only can meet the requirement for going to work, but also can be fuel-efficient as hybrids. Therefore, we feel that in the field of private cars, we should develop dual-mode electric vehicles. This is my point of view.

　　Sales of our dual-mode electric vehicles are good in Shenzhen. 50 taxies produced by BYD are operating. Shelf life of battery originally sold by us is 5 years, and now through actual operation data we are sure that this is reasonable. This is my experience and views, thank you!

　　He Yi: The Forum requests me to ask a question on behalf of Internet users, because response of the mini blog is very active. So I want to ask Mr. Wang a question on behalf the Internet users. The core of developing electric vehicles is technology, and the biggest challenge is also technology. As a symbolic auto manufacturer in China, it is said that BYD has overcome battery technology of electric vehicles, so Internet uses hope you can explain current condition of BYD battery and the future planning.

　　Wang: The battery science is actually a materials science, because advances in materials leading to advances in battery. Batteries are also developing very fast, from lead-acid battery to the current lithium battery, and cobalt battery used on our cell phones. Now lithium is the best battery. We can separate lithium battery into several categories. With the advances in materials, each battery has its advantages.

　　Unlike cell phone battery, car battery should be safer. Car battery is calculated by kWh, if it explodes the power will like a car bomb. It is necessary for car system to choose a more secure battery, so a battery has been selected for it doesn’t break in under high temperature. But it also has shortcomings for can be up to 150 watts. As technology advances, 3 percent can be increased. According to past experience, it can be further improved. This is because we want to find a balance between performance and security. At present, lithium iron phosphate battery is still relatively good. Nowadays, BYD is paying attention to development of lithium iron phosphate battery.

　　A university in the United States applied for patents involving batteries in 1991. There are a lot of patents about batteries, such as connection of one hundred and two hundred batteries, which can apply for more than one hundred patents. We did earlier and saw farther, so we registered it. It is difficult for the future generations to bypass our patent. Because of the early time, we have advantage. (Translator: Qinghua/Wade)

　　See Original Chinese Report Please Clicks:

　　http://auto.sohu.com/20101212/n278247018.shtml

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