June 22, in recent years, the media, the lithium-ion battery cathode material - lithium iron phosphate is very confusing reports of patent disputes.
Currently in China, lithium-ion battery is a local company involved in the choice for battery electric vehicles. And also widely used lead-acid batteries and nickel-metal hydride batteries, lithium-ion battery energy storage better, greater energy density, longer cycle life, no memory effect recharge better, and can basically meet the size, life span, Power and other electric vehicles require a higher demand.
Reporters learned that the lithium-ion battery performance depends on two factors: First, the quality of lithium iron phosphate; second lithium-ion battery production equipment.
Lithium-ion battery production process is extremely complex, the necessary equipment and testing instruments of more than 100 species. From the point of view this exhibition, in addition to individual testing instruments, domestic enterprises can meet the basic needs of all the equipment, but the import of key equipment is reliable. Production processes such as batteries, anode and cathode materials must be uniform coating is critical to ensure consistency of single cell processes, it is mainly the domestic equipment; imported membrane coating nanoscale thickness of only 30-40 microns, domestic equipment simply can not do; in the battery electrolyte into the single links, workshop environment requires not only a constant humidity and temperature, but also require clean, mixed with an electrolyte in the dust, it may cause the battery to short circuit.
Currently on a global scale, the initial commercialization of electric vehicles and plug-in hybrid expensive, mainly because the manufacturing cost of lithium-ion batteries get down, the biggest one is the investment in equipment. It is understood, Shenzhen, BYD is the construction of a new lithium-ion battery production base, all equipment imported from Japan, a total investment of more than 50 billion, the purpose is to maintain its electric vehicles in the domestic market leader. The problem is, the next 10 years, the commercialization of electric vehicles will not be a major breakthrough, when such a large investment costs can be recovered?
