Ma Guilong: "lithium batteries" promotion of electric vehicles long way to go
Ma Guilong professor at Tsinghua University, has twenty years of research dedicated to electric bikes, the industry known as "China's first electric car people." Professor Ma Guilong early inventions technology laid the foundation for industrial development and direction, and free to contribute their patents, with the results of their research to guide the development of industrial technology.
Interview Record:
First, the research process
Reporter: In your electric bicycle industry is a technology veteran, can not be introduced to the course of your research?
Malaysia: Domestic electric cars first appeared in the wheel hub motors, Tsinghua University developed a "speed switch to", "pulse width modulation" in the nineties is relatively new technology, I was as the inventor applied for a patent. 97 years after the maturity of the technology, the electric bicycle into the industry, began mass production. "Daluge", "Chizuru", "Red Flag" and other manufacturers already have some before this foundation, but are in R & D stage. In 1998 the national standard (GB17761-1999) before the promulgation of Japan November 2, 1995 adopted a national standard --- foot power, hand speed is not allowed, I and Guangzhou "Wuyang" factory, "Wei Roth, "co-production pedal sensor, passed the testing standards in Japan, and became the first export of products into the Japanese market.
Second, the "Li-ion battery technology" to promote long way to go
Reporter: In your electric bike in the next research direction? In comparison to the current industry concern, "Li-ion battery technology" to see how?
Malaysia: Many bike between the various components within the many complex routes interfere with each other, if there are problems, can not immediately identify the fault location. Research should be the next alternative chip lead, the development of "wireless LAN communication technology." For example, the console with the battery, the motor part of the no contact, but several components are connected by wireless communication technology to control each other.
In addition, people are concerned about lithium than in many technical indicators to be superior to conventional lead-acid batteries, lithium battery technology there is a significant advance. But its battery management system technology is not perfect. In the long run, the recycling of lithium batteries is a problem to be solved. Lead-acid batteries, while not a "green" battery, but can all be recycled. The lithium battery technology has not been able to do the existing recycling. The current approach to waste lithium batteries are mostly used deep approach, such an approach, while the pollution, accumulation of excess weight, up to a certain depth and temperature of the environment likely to cause the battery to explode. From this consideration, I think, the promotion of lithium battery recycling is not sound in the case of promotion to be careful, otherwise easily lead to new sources of pollution.
Third, consumers need to guard against misleading marketing slogan
Reporter: Many manufacturers claim to be "self-power", as long as the foot can generate electricity, this technology is the truth?
Ma: In the current market, many manufacturers of electric bicycles slogan unscientific, misleading consumers. Such as "self-generating type" bike, cycling can be said of human generation, that argument is no scientific basis. Only the body is equipped with energy recovery system, and only in the case of braking can be "energy recovery", the so-called "foot one step there is electricity," the current electric bicycle up and down repeatedly, the damage to the battery. The misleading propaganda of such consumers should always be vigilant to avoid fooled.
Fourth, the rapid development of China's electric bicycle
Reporter: What are the factors promoting the rapid development of China's electric bike?
Ma: In our country, to promote the rapid development of electric bicycle three factors.
First, China's traditional industries of inheritance. China has a basic bicycle, motorcycle basis for such traditional industries to modern electric bicycle business is very large.
Second, from the reform and opening up, China's rapid economic development, living standards raised, there is higher demand for travel, a huge demand for the industry.
Third, energy and environmental issues, a large number of schools, Academy of Sciences of the investment in research in this area increased. Tsinghua University, plays a technical foundation in the field work for this study provides direction for development.
And then, the development of electric vehicles are now faced with the technological updates and breakthroughs, electric bicycle models to go "light, small, energy-saving" direction, and "motor" of that section to the "greater New York moment, more climbing slope capability, cheaper materials "direction.
Fifth, China's technological level of the world's leading electric bike
Reporter: At present, the inner world of electric bikes in what position?
Malaysia: Domestic electric bicycle in a leading position in the international arena. Marked by our technology are the original and better than other countries, and we can do industrial, product reliability. America and Japan and other countries mainly rely on imports from China. However, the quality of our product needs to be improved in many irregular small factories down production costs in various ways, to engage in price competition, but also reduces the production quality. If this problem can be resolved, most likely as China's electric bicycle as a bicycle producer and exporter of power.
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