Development of new energy automotive batteries avoid impulsive

In the new energy vehicles popular today, as the four electric vehicle lithium battery cathode material for lithium iron phosphate, into a hot concept.

Since the beginning of this year, the lithium iron phosphate patent battle constantly appeared in press reports upgrade. Several major multinational corporations from Europe and America have called lithium iron phosphate core technology patent, they played the patent battle. Moreover, more recent media reports, Phostech companies from Canada and China battery manufacturer negotiations, and that “entry fee” 10 million U.S. dollars, that producing 1 tonne of lithium iron phosphate pay the demanding requirements of 2500 U.S. dollars.
Patent battle seems to have given the technology increased the more mysterious aura. However, it appears too early on lithium iron phosphate has high hopes, the dell inspiron 6000 battery  experts pointed out that lithium iron phosphate battery powered electric vehicles is not an effective solution.

“Do not iron phosphate lithium battery electric vehicles in the role of exaggerated.” MOST 973 plan electric vehicle energy storage project’s chief scientist, Professor Ma Zifeng Shanghai Jiaotong University, said, “the academic point of view, lithium iron phosphate is not may be the future of new energy vehicles main battery. the current lithium ion battery cathode materials are mainly four types of lithium iron phosphate, lithium cobalt oxide, lithium manganese oxide, and ternary materials. from a single cell voltage of view, lithium iron phosphate ratio of cobalt much lower lithium and other materials, lithium iron phosphate energy density is low, the battery system, large volume, large-scale use may not be appropriate, more technical argument needs to be done. struggle on many of our companies rush to lithium iron phosphate project, easily foreign enterprises advantage of the loopholes. ”

Avoid blind launched

In recent years, new energy development of the automotive market is booming up. Data show that by 2012, China will create 500 000 new energy automobile production capacity to 20,000 yuan battery bicycles (Considering hybrid and pure electric vehicles) the average estimates, the domestic auto battery market could reach 10 billion yuan, equivalent to the current market growth in lithium battery 1 times. 2020, new energy vehicles driven global automotive battery market demand for more than 200 billion yuan. It is undeniable that China’s automotive battery industry will usher in rapid development of the golden opportunity.

In contrast, in the hot new energy vehicle market behind the corresponding cell technology is also increasingly put on the agenda. At present, development of new energy vehicles showing the layout of pure electric vehicles, fuel cell vehicles and hybrid abreast of the situation. Pure electric vehicles on the market today mainly use the batteries are nickel metal hydride batteries, lead acid batteries and lithium batteries. Should be said that not all technologies are good enough, there are some flaws, many laboratories and enterprises still have to improve.

Present from the whole, lithium batteries are still a security issue. Either manganese or iron phosphate, lithium, from the cycle life, reliability, security, charging and discharging performance of the various defects in terms of there. “Domestic power dell vostro 1310 battery  recently in 2012 (600,627, stock it) pool project enterprise is very large, can be no real breakthrough. Lithium batteries in five parts: cathode material, anode material, electrolyte, separator, packaging, each of are all important items are a core technology. of which the same has been the incredible. “Tang’s Environmental Energy Technology, Changshu Institute of the Changsha Yongkang said.

As a result, the frenzy of the lithium iron phosphate is partly reflected the mentality of the majority of Chinese enterprises. Technology is not yet mature in a subject, do not put more effort and money spent on technology research, but the choice quickly launched, this is really a waste of resources.

In addition, the quality of the domestic lithium battery there are still large gap with foreign, mainly production of different decisions. Zhejiang University, Professor of Chemical Engineering and Materials Science, Wang Lianbang said: “Chinese enterprises mechanization and automation vary greatly with the foreign countries, many of which are handmade. A battery also can not see, hundreds of batteries in a series, the difference is obvious. on the quality of the shortfall is the consistency of the battery. from raw material to product, which has a lot of processes. a number of different products that are not the same quality. 100 batteries, there are 2 may not be very good. This is the mode of production the problem, not a year or two to make up. ”

Sand Yongkang also believes that consistency is not guaranteed a big problem. “The way to do mobile phone battery is because the small cell phone battery. An open electric car 150 kilometers, storage capacity to 15 kwh, 20 kWh battery pack, cell phone apple 13 macbook air batteries may be one watt, the equivalent of 15 000 times. most of our businesses to use the machine plus the manual way, consistency is not high. are still very low yield. “