Zhejiang Online? March 29, the Zheshang March 30 (Reporter Jiang Huamin internship reporter Cao Shi Qi), the country's first new energy vehicles set Exhibition Center - Hangzhou New Energy Automobile Exhibition Center officially opened. This is following the Hangzhou launched the first national new energy vehicles trade fair in October last year, and again creatively focus exhibition to drum up support for the popularization of new energy vehicles "."

It is understood that the exhibition center will set the new energy automotive consulting, purchase, charging for electricity, sale, and other functions in one, for Hangzhou ordinary citizens to purchase and use of new energy vehicles to provide one-stop caring services. Exhibition center has been settled Zotye, universal (FAW Haima), BYD, Condi five brands of a variety of new energy vehicles. At the same time, its adjacent to Hangzhou, the number of source electric vehicle charge (F) power plant is also officially put into use.

With the questions of the users of new energy vehicles, Ben Wang promptly contact the person in charge of the Exhibition Center, visit interview request, and will soon be permitted. So my colleagues and I get on camera, direct drive to the Exhibition Center.

Zotye 5008 pure electric vehicle for only 99800

11:00, Nibea Hill Road, Tianmu intersection the car, the reporter saw the building in front of 12 eye-catching banner "Hangzhou new energy automobile exhibition center".

Into the exhibition hall, on each side of parked a number of new energy vehicles, left, the Premarin electric vehicles and the State Grid Advisory Centre on the right Zotye electric vehicles occupy more than half of the space, the most inside parked cars BYD F3DM .

As not the weekend, coupled with the pre-publicity nor the general trend of slightly deserted exhibition hall, sparse public consultation around the public Tailang Wyatt electric vehicles to their concerns.

Accompanied by reporters, to see the strange shape of Longview, was immediately attracted to the past. Longview's biggest bright spot is a large space. The length of 4089mm, 2666mm wheelbase, 1871mm of width and 1695mm of height, constitute a large space, of Longview, the best in its class with a total mass of 2150 kg.

Longview uses a 6 edition of the "3 +3" model design, innovative seat layout make people feel eyes lit up. Of integration of the shift lever and center console, front central space more spacious, coupled with a higher body, front and rear head, adequate leg room.

The Zotye sales staff told reporters that the original price of $ 250,000 Longview pure electric vehicles (battery included) countries, the Hangzhou government subsidies and manufacturers advance payment of electricity and a series of preferential subsidies, the current price of only 150 000 yuan, original price 21 million Zotye 5008 pure electric vehicles (battery included) after the discount price is reduced to 99,800 yuan.

Public the Tailang Wyatt pure electric vehicles, the use of two sales model: one with a battery vehicle sales model; another quick-change mode of the battery lease. Hangzhou rental prices remove the subsidies, the monthly cost of 3000 yuan.

An interview with the gallery to look at cars Naidu, she said, recent price rise of fierce, the expenses have gone up, I heard that electric vehicles, environmentally friendly and economical, so specially came to see. When asked more interested in the exhibition hall Which model, she pointed to the front of the congregation Tailang Wyatt pure electric vehicles.

36-year-old Master Xu, Hefei, Lai Hang work has been for many years, two or three years ago began to run rental. Some time ago I heard that Hangzhou has electric taxi, but also a good reputation in the taxi industry, so take time to rest to Hall around.

According to to Zotye new energy automotive marketing center Taoyun De general manager, opened yesterday, the scene is very hot, there are 32 people bookings for purchase Zotye pure electric vehicles, and even has two ordinary citizens the day of purchase orders and two electric vehicles. Tao total also revealed that Thai people will be in years and then released two new pure electric vehicle models to meet the needs of more people.

The performance of electric vehicles in the end? Fully charged, a number of kilometers run? Top speed?

With these questions, the reporter consulted Chen Lu chief of the the Zotye new energy vehicles, marketing center, he said, the battery of the Thai people for private buyers pure electric vehicle configuration than the electric taxi 18kwh capacity is much higher, once fully charged After running 200 km, the maximum speed can reach 120 yards. Calculated in accordance with now peak and valley electricity hair, running 100 kilometers or 20 dollars, fuel car running 200 km cost of 100 yuan, so, so you figure it is very cost-effective.

Chen Kechang also revealed that although the exhibition hall more brands of electric vehicles, but the real road, the private purchase only Zotye electric vehicles.

For the use of electric vehicles, the Zotye new energy automotive marketing center Taoyun De general manager with special emphasis on electric vehicles using lithium batteries used with the charge, usually used to keep, do not wait until the battery runs out and then charge, otherwise battery influential.

Electric vehicles do not drink oil "no" tail "

13:00, the reporter riding a "do not eat oil," there is no "tail" Zotye 5008 electric car, to experience the fun of driving an electric car.

With ordinary fuel vehicles in the appearance of electric vehicles, no different from the front of the car engine was replaced by motor to the rear of the car less the root of the exhaust pipe. Look at the interior, although the models car, but the reverse image, DVD navigation, multi-function affect the system is readily available.

Electric vehicles at home charging, once filled with the required eight hours, go to the charging station can use the fast charge equipment, full of the will of tens of minutes.

Car from the center of the exhibition through the West Lake Scenic Area, the Qiantang a bridge, came to Riverside's high-tech industrial park and then return. Start, acceleration, and uphill, passing all normal, very comfortable to sit inside, almost feel no difference and fuel cars. Just a stop light, the car does not need to consume electricity and very quiet, within the car there is no gasoline, motion sickness of the passengers was a great boon.

Hangzhou supporting facilities?

Hangzhou has built the ancient Tsui, Xixi, north of the city, south of West Lake Culture Square cradle for power plants, to meet the 3000 charge for electricity demand of electric vehicles. Hangzhou Planning Bureau, Hangzhou City electric car charging stations developed by the recent construction of the distribution plan "to the end of 2012, Hangzhou plans to completion of the charge (F) power plant 38, 145 distribution centers, 3,500 sets of charging piles. Then, the service radius of each network will not be more than 5 kilometers, can protect the electric car Cheong Hang worry.

Reporter's notes: the car of progress and development at the same time, the habits with the change. The popularization of new energy vehicles, not just transport, the change in the way of travel, is the interpretation of the concept of a new life, as the public Zhang said: "I believe that when the Hangzhou people are beginning to use electric vehicles, Hangzhou will be more fresh air, our cities will become more environmentally friendly.

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The center display, sales, leasing, consulting, test drive a wide range of services, the business body, Hangzhou, the first franchise of new energy vehicles, is also a local "green travel, eco-Hangzhou" propaganda model window. On one side of the Exhibition Center, charging facilities is also the scene of the national grid marks are eye-catching display. Full build from Hangzhou Power battery transshipment warehouse, the standard charge pile energy supplement facilities 11 show, attracted the attention of many people, asking the public to charge for electricity, wave and wave.

According to the Hangzhou Power Authority, a staff member, the electric vehicle charging facilities exhibition area of ​​about 160 square meters, they will be here long-term establishment of the convenience of the public and the purchaser of consulting and business services window naked car, where to buy in the Exhibition Center or vehicle with standard battery interface consumers can handle the formalities of the

"network" directly in the field, enjoy the intelligent charging for electricity network services provided by the State Grid. Launched and Hangzhou electricity for power mode matching for the private car for the first time naked car sales "to attract the eye of a large number of people come to consult the electric vehicle price and charging the public a constant stream. Zhejiang Wanxiang Group to launch several "hippocampal system" electric vehicle products have radiation to other provinces in 26 cities, the exhibition is the first time for the field of private cars, and the main "naked car sales, and sold the vehicles without batteries another charge to the national grid for electricity service network per kilometer, 0.5 yuan leasing, energy supplement for electricity ", quick and convenient, but also do not have to worry about battery life, the car costs also drop a lot. An appearance of new models, naked car priced at 128,000, after the private purchase of coin-related procedures and invoices to apply for the subsidy of 60,000 yuan to the Hangzhou Municipal Finance Bureau, the actual purchase costs as little as 60,000 yuan, many The crowd of citizens have said that such a low price and car costs impressive.

It is reported that Hangzhou use of a dual national and local financial subsidies, and multiple convenience, such as licensing policies to accelerate the popularity of the use to promote new energy vehicles, the city has to develop new energy vehicles 23, has been in public transportation, electricity, postal services, rental, courier and private the passenger area of ​​the development of new energy vehicles over 780 vehicles, including private passenger cars, 87, 2012 the city's electric car ownership is expected to reach 23,000.

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Since electric vehicles use lithium batteries, to solve the electric bikes light weight, the appearance of product demand, however, shipped some time is not long, the technology did not reach the perfect, there are many problems to be solved, the lithium battery is a class of battery lithium metal or lithium alloy anode material, the use of non-aqueous electrolyte solution, the reaction: Li + MnO2 was = Rhombohedral LiMnO2 the reaction for the oxidation-reduction reaction, used in electric vehicle technology is still further improved.

The lithium-ion battery with the development of digital products widely used because it has many advantages such as high energy density, high voltage, non-polluting, does not contain lithium metal, high cycle life, no memory effect and fast charge and discharge, As technology continues to change, Japan's Sony Corp. to develop carbon materials for the anode, the cathode of lithium batteries in lithium-containing compounds, the positive terminal of the battery when charging the battery, lithium-ion generation lithium-ion generated after electrolyte movement to the cathode, as the carbon anode was layered structure, it has a lot of porous anode of lithium ion embedded in the porous carbon layer, an embedded lithium-ion is more, the higher the charge capacity, production high-performance lithium batteries.

Current on the electric bicycle market, mostly referenced by only single cells in series, parallel from the high-power lithium-ion battery in the application process, the lithium battery problems in discrete between the various single cell greater safety and service life of the entire battery pack, which affects every single cell of this management tool is not only able to manage and protect the battery pack, and in the discharge also make the voltage of each battery to maintain a balanced consistent. To ensure that all batteries in the battery pack with a voltage line balanced charge, until all the battery is fully until the charging.

Therefore, the use of lithium batteries of electric bicycles a significant advantage not only double the energy than lead-acid batteries, high charge and discharge times, and switch to the same weight of lithium batteries can travel 100 ~ 150km, 5 of lead-acid batteries times, giant, there is great potential for development.

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Production line in the high degree of automation of the diaphragm, the diaphragm thickness are based on the online high precision non-contact thickness gauges and fast feedback control system for automatic detection and control. The uniformity of thickness of the diaphragm, including the vertical thickness uniformity and lateral thickness uniformity. The lateral thickness uniformity is particularly important. Generally require control within ± 1 micron.
Mechanical properties

The mechanical properties of the diaphragm is an important factor to affect its application, if the diaphragm ruptures, it will short circuit, reducing the yield, thus requiring the process of the battery pack and use the charge and discharge structures, the diaphragm itself has a certain mechanical strength. The mechanical strength of the diaphragm can be used to measure puncture resistance and tensile strength.
Tensile strength and membrane processes associated with the tensile strength of the diaphragm. Uniaxial tension, the film in the stretching direction, strength and vertical direction; while the biaxial stretch, the diaphragm consistency will be similar in both directions. General tensile strength longitudinal strength to reach 100mP transverse strength can not be too over the General Assembly led to the lateral shrinkage increases, this contraction will increase the risk of lithium battery manufacturer, positive and negative contact.

Anti-puncture strength of anti-puncture strength is imposed in a given needle-shaped material used to expose the diaphragm sample quality, and use it to divide trend of short circuit occurs in the assembly process. Due to the diaphragm is sandwiched between rugged positive and negative film, you need a lot of stress. To prevent short circuits, so the diaphragm must have a certain anti-puncture strength. Experience, anti-puncture strength values ??of 300 to 500 g.

Through performance
Through the performance available in a certain period of time and pressure, the amount of membrane gas characterization, mainly reflecting the patency of the lithium ions through the membrane. The size of the diaphragm through the diaphragm porosity, pore size, pore shape and pore twists and turns and so divide the internal pore structure factors affect results.

As a lithium battery separator material itself has a porous structure, porous in the diaphragm material shall be uniformly distributed. Generally in the pore size of 0.03μm ~ 0.12μm, pore size is too small will increase the resistance, too easy to make the positive and negative contacts or dendrites pierce the short-circuit.
Diaphragm manufacturers now basic to the permeability, porosity index to measure the permeability. Porosity is the volume percentage of holes in the volume of the monomer film, and the density of raw materials, resins and films. Existing lithium-ion battery separator porosity between 40% to 50%.
Physical and chemical properties.

Wettability, good wettability and wetting speed is conducive to improve the affinity of the diaphragm and the electrolyte, to expand the contact surface of the diaphragm and the electrolyte, thus increasing the ionic conductivity, improve performance and capacity of battery charge and discharge. Divide on the wettability of the electrolyte through the determination of the liquid absorption rate and liquid holdup measured.
The chemical stability of the membrane in the electrolyte should be maintained long-term stability, no reaction with the electrolyte and electrode material. Its chemical stability is evaluated by measuring the electrolyte corrosion resistance capacity and the expansion and contraction rate.

Thermal stability of the battery charge and discharge process releases heat, especially when a short circuit or overcharge, there will be a lot of heat release. Therefore, when the temperature, the diaphragm should be to maintain the original integrity and mechanical properties of play to isolate positive and negative, to prevent short-circuit the role.

Safety performance as the lithium gradually expanded the scope of application, especially in the field of battery power, the safety of lithium-ion battery to become the most important part of the lithium battery manufacturers. As lithium is the most critical core material, a higher demand on the diaphragm.
Li-ion battery separators generally are able to provide an additional feature is thermal shutdown. This feature can provide an additional security protection for lithium-ion battery. The main parameters of the function of the the obturator temperature and the rupture of membrane temperature.

The obturator temperature microporous closed when the temperature, the exothermic reaction from the heat, charge-off or the battery external short circuit occurs when the internal battery, these cases will have a lot of heat. When the temperature close to the diaphragm melting point, porous closed to form a thermal shutdown, thereby blocking the ions continue to transfer and the formation of the circuit, play a role in the protection of the battery. General PE of 130 ℃ ~ 140 ℃, PP 150 ℃. Rupture of membranes, the temperature refers to the self-heating of the internal battery, external short circuit inside the battery temperature increases, more than closure temperature occlusive micropore blocking current through hot melt performance temperature to rise further, causing the diaphragm rupture, the battery short circuit. Rupture when the temperature is the rupture of membrane temperature. High-quality diaphragm the obturator temperature lower and higher rupture temperature.

China's lithium-ion battery industry development
China is now the global battery manufacturing power, battery production and export volume ranked first in the world. Of lithium-ion battery industry began in late 1997, through an introduction, learning, research and development road of industrialization. The lithium-ion battery production in China in 2000 was only 035 million.

After 2001, with the rapid rise of the lithium-ion battery companies in Shenzhen BYD, BAK, B & K, Tianjin power of God, the lithium-ion battery industry has begun to enter the phase of rapid growth. In 2004 reached 800 million, soared to 38 percent market share in the global market after Japan. In 2005 ~ 2008, China's lithium-ion battery global market share stable at around 34 percent, since the formation of a situation that Japan and South Korea. China's output of lithium batteries is about $ 2 billion in 2010 sales revenue of about 18 billion yuan.

The lithium-ion battery export volume in 2010 was 1.195 billion. Supporting international companies in 2010, Japan accounted for 42%, South Korea accounted for 38%, China accounted for only 18%. The huge demand for lithium-ion battery, lithium battery company in China in the global market share is decreasing competitiveness weakened.

At present, China has developed into a compelling focus for the global lithium industry as one of the world's largest manufacturing base for lithium-ion batteries, BYD, the power of God, BAK, ATL enterprises. The lithium-ion battery manufacturer in Guangzhou, Tianjin, Shandong, Jiangsu, Zhejiang, southern China (Guangdong and Fujian) lithium battery production still accounts for 65% of domestic market share in other provinces accounted for 10%. Lithium production the most representative of the South China region Shenzhen, entrenched BYD, BAK, B & K China Guangdong Bao many famous enterprises, the formation of industrial clusters.

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