Battery Routine Depends On Government Policy
Author: Source: Datetime: 2016-11-26 11:07:07
In January 14, 2016 the Ministry of Industry released the "new energy vehicles to promote the use of recommended models directory", based on security considerations, the use of ternary battery electric bus failed to enter the directory, which can not enjoy government subsidies and tax-free Preferential policies.
Electric bus is the ternary lithium battery and lithium iron phosphate battery between the important positions. New energy vehicle battery is king, as accounted for 40% of the cost of new energy vehicles, power battery, its product performance, reliability, life mileage, life and so determines the success of new energy vehicles. Ternary lithium batteries and lithium iron phosphate batteries have their own advantages and disadvantages, the former product performance, highlight the advantages of life mileage, while the latter in the safety and reliability and long cycle on the prominent advantages.
In 2015, the electric passenger car battery capacity of 9.63GWh (gigawatt hours), accounting for all the new energy vehicles to 61%. Lost the electric bus position of the ternary battery, lifepo4 battery in the struggle with the temporary fall under the wind.
With the inventory fraud, policy plugging and access barriers to improve the new energy vehicles subsidy policy will soon be released. It is reported that, as the deception of the new energy section of the bus, will bear the brunt of cutting subsidies, new energy passenger cars, fuel cell vehicle subsidies are relatively stable, the new energy vehicles, new energy vehicles to support signs of obvious.
Policy shift, the new energy vehicle market structure is about to change - the proportion of new energy vehicles in the market decline at the same time, new energy passenger cars, new energy vehicles, new energy vehicles will increase the proportion of momentum. As the latter three are mainly equipped with ternary batteries, ternary battery demand is expected to grow substantially.
In fact, ternary battery policy shift in June has occurred. June 20, the Ministry of Industry issued "automotive power battery industry standard conditions" business directory (fourth) list, selected in the 31 single enterprise and a system enterprise, the main business for the three battery business up to 21 Home, accounting for up to 68%, compared with the list of the previous three batches increased significantly.
More importantly, the ternary battery is to solve the "mileage anxiety" that plagued the development of new energy vehicles, the main bottleneck of the technical development line. As LFP battery energy density is low, low temperature performance is poor, resulting in new energy vehicle life is poor, and driving range is the primary reference factor for consumers, so manufacturers need higher energy density of the battery, which is the ternary battery Better than lithium iron phosphate batteries. As the automotive industry's subversive, Tesla NCA is the use of high-performance ternary lithium battery materials, leading the industry trend.
At the same time, the State Council promulgated the "energy-saving and new energy automotive industry development plan (2012-2020)" also mentioned, EKG (single cell energy density) by 2020 power battery module energy density 300Wh / kg (corresponding Single cell energy density of at least 330Wh / kg or more), which makes more and more power battery companies and vehicle companies will turn to ternary lithium batteries.
Technological development and policy support under the dual outlet, the ternary face explosive growth of the battery window, the market penetration of space to enhance the huge. In the short term, ternary battery is expected to double, the agency predicted that in 2016 ternary battery demand is expected to double from 2015 to 9.5GWh 4.4GWh; in the long term, ternary battery exists 10 times the growth in 2020, three The demand for battery cells can reach 55.4GWh (including passenger cars) or 50.5GWh (excluding buses), compared to 11.6 times or 10.5 times the 2015 growth.
(GGII) is expected to be more optimistic, its 2016 power battery demand 32GWh, ternary battery demand will reach 12.5GWh, an increase of more than 200%, optimistic estimates, in 2020 three Yuan battery demand is expected to reach 90GWh, compared to 2015 growth of more than 20 times.
2016 "two sessions" period, the Ministry of Industry Miao Wei stressed that the new energy vehicles have two major bottlenecks, one of which is the product side, to focus on capturing the battery as the representative of the product performance, reliability, life mileage, life and other problems . These several problems, ternary lithium iron phosphate and lithium iron phosphate batteries have advantages and disadvantages, the former product performance, highlight the advantages of life mileage, while the latter in terms of reliability and long cycle of outstanding advantages.
In fact, the "mileage anxiety" is plagued by the development of new energy vehicles, the main bottleneck, charging facilities, and the charge is not perfect, such as the problem of slow charging for new energy vehicles, "mileage anxiety" is very prominent.
According to statistics, the first car in terms of family life to reach 320 km mileage to meet the daily needs of the use. In the current performance of lithium battery conditions, to achieve the mileage of this electric car will be very high cost, it is difficult to large-scale promotion.
In order to take into account the issue of cost-effective, the current mainstream of the new energy vehicles mileage are 200 km from top to bottom, with the gradual deepening of the promotion to meet the needs of most consumers continue to improve the mileage has become a new energy vehicle development .
Improve mileage is nothing less than the installation of more batteries and improve the unit cell energy density of the two paths, obviously to improve the energy density of the unit battery is more sustainable way, which is the cathode material to determine the lithium battery energy density of the most important factor .
According to the different cathode materials, lithium-ion batteries can be divided into lithium cobalt oxide (LCO), lithium iron phosphate (LFP), lithium manganese oxide (LMO), ternary material four battery line, and ternary battery full name should be three Lithium-ion battery materials, the official name should be nickel manganese cobalt manganese (NCM) and nickel cobalt lithium aluminate (NCA).
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