Energy-saving environmental protection lithium battery set off craze
With the constant fluctuations in international oil prices, energy saving environmentally friendly lithium battery in the limelight once again a hot topic. From 6 months, the number of international auto companies and electronics companies are using large-scale lithium battery joint investment. Including Toyota and Matsushita, Nissan and NEC, the public and Sanyo, Bosch and Samsung, they believe that lithium batteries in the coming years will gradually replace the nickel-metal hydride batteries, lead the direction of development of hybrid vehicles. Lithium in the heat of global investment background, Chinese automobile enterprises in this area of research is what kind of? Experts on the lithium battery is holding what kind of attitude? Recently, the reporter interviewed specifically on this issue who has studied the domestic lithium battery several experts.
Mercedes-Benz vehicles using lithium batteries technology
China's iron phosphate lithium battery research breakthrough has been made
Lin Cheng told reporters, demanding automotive lithium batteries. It requires the use of vehicles in a variety of conditions, must protect the security, there could be no fire or explosion. The first is the impetus for electric vehicle batteries, in this country has made great breakthroughs have begun to take industrial scale. But 5,6 years ago, with the battery electric vehicle accidents often occur, so the battery also gradually be diluted. Now, the domestic lithium battery research and progress rapidly, especially in the battery safety issues, has made great progress.
Lin Cheng told this reporter lithium batteries include lithium manganese oxide and lithium iron phosphate batteries. Currently, the development of the domestic lithium manganese oxide has begun to take shape. Lithium iron phosphate as higher security, longer lifetime, will become an important direction for future development of lithium batteries is also the vehicle of foreign R & D focus. At present, the domestic iron phosphate lithium battery studies are progressing well, especially in some of the patent on a breakthrough, the bus provided by the Beijing Olympic Games is to use self-developed lithium iron phosphate lithium battery.
"Of course and study abroad, compared to the lithium batteries, the domestic lithium battery research still a gap, but the country's emphasis on increasing lithium batteries, the next will be R & D focus." Lin Cheng told reporters.
Large-scale lithium batteries for electric cars need some time
Henan Huanyu Group is a battery from the battery to the plastic parts and related hardware battery manufacturing, equipment manufacturing, electronics manufacturing, a complete industrial chain of Enterprise Group, has undertaken the project of Science and Technology Li-ion battery research and development.
"At present the domestic lithium battery research and foreign, compared, the difference is mainly reflected in the cell's control system and power management systems." Deng Lun-ho right told reporters there is Guonei on battery research is at Gezi developed state. Currently, some companies have been able to provide the corresponding lithium battery electric vehicle accessory products, supporting the general lithium battery cover 200 to 500 km.
Deng Lun-ho told reporters that high prices are the domestic lithium battery, power management system problem has not yet been resolved. Charging electric vehicles also face the problem. Currently, the general line at home can not charge lithium batteries for electric vehicles to be equipped with a small charger, and charging time is very long, very troublesome. Abroad, in order to solve this problem, generally regard the charging stations and gas stations together. Domestic battery charging station is not built up a large scale.
Deng Lun-ho believes that the current consumer acceptance of electric cars with lithium batteries up there difficulty: "the price of a conventional electric vehicle is about twice the same configuration or even higher gasoline locomotives, domestic consumers have not yet sufficient economic prepared to accept the power and electric vehicles. "
Lithium iron phosphate promising prospects
The boy to reporter, electric vehicle battery research and development experience from the lead-acid batteries, nickel-hydrogen battery to the development of lithium batteries, each battery advantages and disadvantages.
Lead-acid battery to get the first, using the longest time, is battery series. The safety performance of the best lead-acid batteries, rare explosion, fire and other phenomena, but not too attractive for energy storage. Later, people developed the nickel-hydrogen batteries, storage energy and power than the effect of the ideal lead-acid batteries, but due to Ni-MH battery charging hydrogen generated in the process prone to explosion, so Ni-MH battery in business may or may not state.
To the year 2000, people have developed a lithium battery. Lithium batteries are lead-acid batteries store power for 2 to 3 times, but because it contains a lithium-ion active in the metal layer surface, prone to spontaneous combustion in the air, explosions, etc., are at higher risk. So now the main national research and development on lithium to control its security and stability.
"A rechargeable lithium battery can probably around 1000, in which storage iron phosphate lithium battery is better than lithium cobalt oxide and lithium manganese oxide effects worse, but it's the best safety performance, than the lead acid battery energy storage much higher, so now the most favored lithium iron phosphate. "the boy said.
The three problems of domestic lithium battery research
Quan-Shi Chen said in an interview: "Now the state attaches great importance to research on lithium batteries, '863 'project, the state invested 66 million yuan, all for the lithium battery research and development. We are with Japan, the United States walk in the lithium battery research and development such as the forefront of developed countries, China lithium battery manufacturing precision, equipment, standards development lags behind the details. "
Quan-Shi Chen told reporters that at present there are three issues of domestic lithium battery research. The first is the consistency of manufacture. As in lithium battery manufacturing process and equipment gaps, making the production process mixed domestic lithium battery manufacturing standards also fail to consistency. Li-ion battery electric vehicles are used in series or parallel with, if the consistency issues are not well, then the large-scale production of lithium batteries also can not be used in electric vehicles.
Second, intellectual property rights. Currently in the iron phosphate lithium battery research breakthrough has been made, but because of U.S. patents in this area, so although we have some links to independent research and development, but in intellectual property issues, but also do not know how to respond.
The third issue is the selection of raw materials. Now the raw materials used in lithium battery production can not all imported, mainly from China, but domestic raw materials, through international certification, production of the lithium battery in order to be internationally recognized, so part of the certification of raw materials still exist some problems.
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