Comprehensive report 】 【 high lithium electricity at present, China is already the world‘s largest lithium ion battery manufacturing base, more than 45% of the world‘s total output, but the overall is still in the industrial chain of low-end. Lithium ion batteries in China started late, development is fast, rely mainly on the imported technology and equipment, its products has been basically can meet the digital, electrical appliances, electric bicycles and small electric vehicles need to farm. High power and energy storage battery gap shrinking in the past two years, but the distance is still relatively large, is the bottleneck restricting the development of electric vehicles in China.
To strengthen technology research and development
In "state council on accelerating the decision of the cultivating and developing strategic emerging industries" identified in seven strategic emerging industries, "new energy", "new materials" and "new energy vehicles" is the world‘s attention and struggling to grab the commanding heights of the important areas, huge space for development. New energy and new energy vehicles development urgent need large capacity storage battery and lithium ion power battery safe and reliable. Lithium ion battery is one of the key elements decide the success or failure of the new energy vehicles.
The current lithium ion battery in safety, range, service life and cost, to increase and improve the use convenience, etc.
Diaphragm is one of the lithium ion battery four key components, it cost more than about 20% of the cost of the battery. Diaphragm directly influences the performance of the battery capacity, safety, functional characteristics, cycle life and reliability. Lithium-ion batteries, higher requirements on the performance of the diaphragm. Chemical and electrochemical stability, and must have enough good electrolyte adsorption ability, good ion permeability, good electrical insulation, proper pore size and porosity, enough mechanical properties, such as mechanical properties, good thermal stability. Is the technical barriers to higher cell one of the lining of the key components in the structure.
The quality and level of the diaphragm directly affects the quality of the battery, is the key technology of diaphragm industry presses for solution. Diaphragm market capacity at present, the end of 2015 domestic diaphragm can output has reached its effective capacity has reached 1.5 billion square meters, the annual output of 700 million square meters, 2015 2015 the domestic market demand of about 2015 square meters. Is expected by the end of 2016 China‘s total output of the diaphragm can be more than 2.3 billion square meters, more than global demand for battery diaphragm. However, high-end power lithium battery diaphragm industry is still in short supply, high-end diaphragm products quality gap with foreign products in the narrow, but the gap is bigger, still rely on import, have information, high-end imports 70% of membrane, membrane import rate more than 40%.
Vigorously implement the surpassing strategy
In order to ensure the lithium battery, sustainable and healthy development of the diaphragm industry advantage with rapid development of industry should be grasped, constantly enhance the level of membrane technology, to meet the high performance power battery and the demand of large capacity storage battery.
A, vigorously implement the strategy of surpassing efforts to narrow the gap with foreign high-end film. The current global market concentration is higher, diaphragm agms have accounted for more than 54% market share, the last four of the world, such as they are relying on technology, capital strength, dominating the world. Diaphragm industry started late in China, gradually developed mainly through the introduction of technology and equipment, mainly in the low-end market, low production concentration and, research and development, lack of innovation. Because of the influence of raw materials on the properties of the diaphragm is huge, a handful of big foreign companies have independent polymer laboratory, develop their own special material, and the lack of real can meet the need for stability of diaphragm material source of supply. The diaphragm controllable porosity, functional coating, organic and inorganic blend materials there is a big gap.
So the diaphragm industry should adhere to the "guide", vigorously implement the surpassing strategy, trying to close the gap. Vigorously promoting high-end products, accelerate the diaphragm in the global industrial chain from low-end to high-end. To stem from the source head low level repeated construction, to improve and upgrade the existing production technology and equipment; To innovation and replace the imported oriented, vigorously develop new products, adhere to the differentiation development, promote structural adjustment, and gradually form a reasonable proportion of high, medium and low-end products product structure. "Much starker choices-and graver consequences-in planning, plastic association will join together and diaphragm industry product upgrade schedule for basic, key generic technology research special plan. To avoid when the current industry prosperity to the problem of blind investment, avoid to form new overcapacity, want to focus on the structure optimization and elevated, quality and benefit.
Second, should be about development of new energy vehicles and lithium ion battery, truly understand the downstream battery maker of diaphragm, especially the requirement of power lithium battery diaphragm. Current to meet the needs of the development of new energy vehicles and energy-saving car quickly, the lithium battery industry is facing a sharp rise in the battery energy density and battery manufacturing costs plunged two tasks. Lithium battery industry is put forward to improve the battery energy density and ensure continued life greatly the goal of ascension, are stepping up to the development of the positive and negative, electrolyte materials and the improvement of production technology, at the same time put forward new and higher requirements of diaphragm material. Diaphragm industry to adapt to the new requirements, and strive to do technical research, solve various high performance battery industry in urgent need of the diaphragm, to improve the product quality rate, improving thermal stability and diaphragm ultrathin membrane, improve the diaphragm liquid absorption ability, research and development new diaphragm product such as polymer electrolyte membrane, fiber membrane new breakthroughs are obtained, at the same time focus on fuel cells and other new type electric batteries required for the development of the diaphragm.
Three, accelerate the construction of innovation system of vertical, vigorously carry out collaborative innovation and joint research, to unite with the upstream petrochemical enterprises, enhance the development of lithium battery diaphragm is special material, the factor affecting the quality of the diaphragm in addition to process technology and equipment, the key is the lack of meets the needs of the diaphragm production special lithium battery diaphragm material.
Four, vigorously promote innovation driven development. The new technology revolution and industry revolution is the global rise. Intelligent manufacturing, network manufacturing, digital manufacturing are profoundly change production manufacturing and service mode. Diaphragm industry to seize the opportunity, accelerate the construction of Internet + project, as actively, develop industry innovation and industry upgrading. To speed up the talent, technology and capital aggregation of innovation resources, accelerate the construction of diaphragm industry innovation system, strive for the diaphragm of the domestic special breakthrough, strive for breakthrough of home-made diaphragm dedicated production equipment to have independent intellectual property rights of new techniques, new materials, new technology breakthrough.
The lithium battery and the diaphragm has a great potential for future development of the industry. To reduce carbon emissions requirements in terms of traffic will promote the development of new energy vehicles, at the same time, domestic governance haze action, which is mainly composed of electric cars will also further promote the sustainable and rapid development of new energy automotive industry, bring power lithium battery industry development opportunities. In addition, along with the strengthening of lead-acid battery environmental pollution treatment, lithium battery replacement for new opportunities and promising prospects of lithium battery and diaphragm industry.
