1. Requirements for cable environment
Natural environment: Rechargeable car cable is exposed to sunlight, humidity and freezing for a long time, so the cable needs to be UV resistant and low temperature resistant. China covers a wide area and needs to meet the requirements of different regional conditions. Artificial environment: Dragging, twisting, bending, stretching and other phenomena will inevitably occur during the charging process, which is easy to cause mechanical damage. Therefore, it is necessary to reduce the bending stress and increase the softness of the cable. In the use of the process may also cause corrosion of the acid base liquid, so it needs to have excellent resistance to change.
2. Functional requirements
In addition to charging, electric vehicles also need communication and automatic control when necessary.
3. Safety requirements
Ev charging process time is short, high current intensity, high frequency of use, to ensure good insulation, but also requires that the material has a certain temperature resistance, anti-aging performance, and halogen-free flame retardant and low smoke density when burning.
Cable sheath refers to the outermost layer of the cable, also known as the outer quilt. Play the role of isolating internal insulation layer and the outside, prevent insulation from moisture, so that the internal mechanical damage. Therefore, the cable in the use of the sheath material has strict requirements.
TPU (thermoplastic polyurethane elastomer) is a kind of special elastomer with wide hardness range and good elasticity and toughness under high hardness. In addition, TPU has a low specific gravity of only 1.0~1.2g/cm3, so it is more economical to produce more products with the same weight.
德国：TUV 2PFG 1908、DEKRA K175
On March 26, the Ministry of Finance, the ministry, the Ministry of Science and Technology, development and reform commission jointly issued "about further perfecting fiscal subsidy policy of new energy automobile application notice, clear according to the new energy automobile scale, factors such as cost reduction, and subsidies TuiPo exit regulation, reduce passenger car new energy, new energy bus, new energy truck subsidies standards, promote the industry evolution, prevent market ups and downs.
In the 2019 subsidy policy, new energy vehicles with a range of less than 250 kilometers will no longer receive subsidies, while subsidies for other models will also be sharply reduced, and higher technical standards will be set for vehicles. At the end of the three-month transition period, local governments will no longer subsidize the purchase of new energy vehicles and instead use the money to support charging infrastructure.
The main factors restricting the development of the new energy automobile industry are all kinds of obstacles in the use process, such as the convenience of charging infrastructure and the restriction of the existing urban management laws and regulations on the development of new energy automobiles. In view of this, the government has reduced subsidies and instead used funds to support charging infrastructure to meet the demand for new energy vehicle development.
Beijing: About 127,000 charging piles have been built by April 2018. About 2,000 of them, or 20,000 in total, have been built in the public sector, "he said. A public charging network with a service radius of 2km within the third ring road, 2km within the fourth ring road, 3km within the fifth ring Road, and 5km within the sixth ring road is formed. The ratio of public charging piles to personal electric vehicles is about 1:6. In terms of the market pattern, at least 70% of the public charging piles in Beijing are in the hands of the State Grid Beijing Electric Power Company, Putian New Energy, Beijing Auto Electric And Xingxing Charging. By the end of 2017, State Grid Beijing Electric Power had 7,200 public charging piles in Beijing, accounting for 35 percent of the city's market share. Putian New Energy has about 2,000 public charging piles in Beijing, Xing Xing Has put into operation 3,300 public charging piles in Beijing, and Beijing Auto Electric has built more than 5,000 charging piles in Beijing.
Tianjin: In 2017, there were 4,000 new public charging piles in tianjin, more than 8,000 in total, basically forming a charging network within a 2-kilometer radius of the urban area. Tianjin State Grid Electric Power Company speeds up the improvement of electric vehicle charging and changing network layout. In 2018, 87 charging stations and 1,486 charging piles of various types were built.
Hebei province: By the end of the 13th Five-Year Plan, there will be 1,970 charging stations and 65,625 charging piles in the province. Among them, there are 1,533 public charging stations and 25,730 charging piles. There are 437 special charging stations and 39,895 charging piles.
Shanxi Province: From 2016 to 2020, the total investment of electric vehicle charging facilities in Shanxi Province is expected to exceed 5.2 billion yuan, of which 2.4 billion yuan is invested in charging (changing) stations and 2.8 billion yuan in charging piles. By the end of 2020, an electricity charging (changing) infrastructure system consisting of 343 centralized charging (changing) stations (including 283 urban centralized charging stations and 60 high-speed intercity fast charging stations), 190,000 decentralized charging piles and one intelligent charging service platform will be completed.
Jilin Province: During the "13th Five-Year Plan" period, 119 new charging stations have been added in the province, including 18 bus charging stations, 15 taxi charging stations, 7 special vehicle charging stations such as logistics sanitation stations, 42 urban public charging stations and 37 inter-city fast charging stations. The number of new charging piles will reach 87,526 (excluding the existing 67), including 8,363 distributed public charging piles and 79,163 dedicated charging piles for public and private passenger vehicles.
Shanghai: The scale of new energy charging facilities in Shanghai will reach 103,000 by 2017; It is estimated that by 2020, the total number of charging piles in Shanghai will be no less than 211,000, and there will be 68 bus parking stations with charging functions. Among them, there should be no less than 28,000 public charging piles and no less than 131 public charging stations in the city. In the future, the volume of charging piles in the main urban area of Shanghai will be distributed at least once every 5 kilometers.
Jiangsu Province: By the end of 2017, jiangsu has built 154 urban fast charging stations, bus charging stations, high-speed fast charging stations, charging towers and other charging facilities, and put 2,000 charging piles into operation, realizing the full coverage of the fast charging network in expressway service areas across the province. In the urban core areas of Nanjing and Suzhou, build a 2-kilometer charging ring. From 2017 to 2020, Nanjing plans to build 1,290 new public charging stations and 15,108 charging piles. By the end of the 13th Five-Year Plan, the total scale of public charging infrastructure in Nanjing will reach: 1,542 charging stations and 20,457 charging piles. Zhejiang Province: by 2020, it will build more than 800 centralized charging stations and 210,000 decentralized charging piles. Among them, more than 400 dedicated charging and changing stations in the public service sector, more than 198,000 self-used charging piles for users, more than 240 public charging stations and more than 12,000 public charging piles of various types, and more than 160 inter-city fast charging stations of expressways have been built.
Jiangxi Province: By the end of 2020, the province will have built 260 charging stations and about 100,000 charging piles.
Fujian province: By 2020, the province will have built 280,000 charging facilities of various types and more than 180 inter-city charging stations by the end of 2017.
Anhui Province: By 2020, it will add 500 centralized charging stations and 180,000 decentralized charging piles. Among them, 200 bus charging stations, 60 taxi charging stations, 50 special vehicle charging stations such as sanitation and logistics will be added, 150,000 user specific charging piles will be added, 70 urban public charging stations and 30,000 distributed public charging piles will be added, and 120 inter-city fast charging stations will be added.
Shandong Province: By the end of 2020, Shandong province will invest 11.86 billion yuan in the construction of charging and changing facilities, and plans to build about 350,000 charging piles and 920 charging stations. At present, 1,103 charging stations and 18,135 charging piles have been built in the province.
Guangdong province: By the end of the 13th Five-Year Plan period, the construction of pearl River Delta loop high-speed G94, Shenhai Guangzhou Branch Line S15, Guangzhou-Macau High Speed G4W, Guangzhou-Huizhou High speed S21, and Guan-Buddha High speed G94 (11) service area intercity fast charging stations will be completed in the province, so as to realize the completion of the Pearl River Delta loop charging network. From 2016 to 2020, the total investment in the construction of charging facilities in the province will be about 54 billion yuan. By 2020, Guangdong will have built about 1,490 centralized charging stations and 350,000 decentralized charging piles.
Guangxi: Up to December 2015, Nanning has built 5 charging stations, 4 fast charging piles 50, 1 slow charging pile 8. According to the Industry Development Plan of Nanning Refueling (Gas and charging) Stations (2015-2020), the number of refueling (gas and charging) stations in Nanning city is planned to be 514 by 2020, including 476 gas stations, 10 gas stations, 14 charging stations and 14 joint refueling (gas and charging) stations.
Hainan Province: By 2020, 28,000 charging piles (including 23,126 user specific charging piles and 4,874 distributed public charging piles) and 30 public charging and changing stations should be built in Hainan province. By 2020, the total investment scale of charging infrastructure in The province will be 1.443 billion yuan. Henan Province: by 2020, there will be over 1,000 centralized charging stations and over 100,000 decentralized charging piles of various types. Hubei Province: By the end of 2017, a total of 18,000 charging piles had been built in Hubei Province, including 12,000 in Wuhan. By 2020, Hubei will invest in 376 charging stations and 47,072 charging piles, eventually realizing inter-city interconnection of charging and changing services within Hubei province.
Hunan Province: By December 2016, Hunan province had built more than 60 charging stations, more than 5,000 decentralized charging piles, and 18 charging stations in the Hunan section of beijing-Hong Kong-Macao Expressway. By 2020, Hunan province will add 415 centralized charging stations and 200,000 decentralized charging piles. Meanwhile, it is stipulated that all new residential parking lots should be equipped with 100% charging infrastructure or reserve construction and installation conditions.
Sichuan province: There are more than 1,000 public charging piles in Sichuan. Chengdu has built 14 charging stations, 201 fast-charging DC charging piles and 679 distributed AC charging piles. By 2020, Sichuan will strive to build 270,000 charging piles, 604 centralized charging stations, including 140 bus charging stations, 91 taxi charging stations, 89 special vehicle charging stations, 88 urban public charging stations, and 196 charging stations in intercity expressway service areas.
Chongqing: By the end of 2017, the city had built 794 charging stations (including 12 electrical changing stations) and 5,044 charging piles, covering 37 districts and counties. By 2020, Chongqing aims to build 150,000 units, with one public charging and changing station per kilometer in the main urban area. Guizhou Province: By 2020, no less than 20% of the parking Spaces for provincial and state-owned enterprises to build charging facilities, and no less than 10% for municipal and county-level authorities to build charging facilities.
Yunnan Province: By 2020, Yunnan province plans to build over 350 centralized charging stations, including over 74 public charging stations, over 100 bus charging stations, over 62 taxi charging stations, over 52 intercity fast charging stations, over 42 dedicated charging stations for transpo logistics vehicles, and over 20 charging stations in scenic spots. More than 163,000 distributed charging piles are planned to be built, including more than 148,000 dedicated charging piles for official vehicles and private cars (more than 99,000 in residential areas, more than 49,000 in public institutions and enterprises and institutions), and more than 15,000 distributed public charging piles.
Shaanxi Province: Plans to add more than 454 centralized charging stations and more than 94,400 decentralized charging piles by 2020. Among them, there were over 107 new bus charging stations, 78 taxi charging stations, 67 special vehicle charging stations such as sanitation and logistics, 118 intercity fast charging stations, 84 urban public charging stations, 17,500 distributed public charging piles and 76,900 dedicated charging piles for users.
Qinghai province: By 2020, 40 charging stations and 20,000 charging piles will be built to meet the charging needs of 20,000 electric vehicles.
Xinjiang: By 2020, Xinjiang will add 180 centralized charging stations and 13,800 decentralized charging piles to meet the charging needs of 28,800 electric vehicles in xinjiang, and promote electric vehicles in seven areas, including buses, logistics vehicles, sanitation vehicles, scenic spots, taxis, official vehicles and private cars.
By the end of 2017, China had reached 450,000 charging piles of various types, including 240,000 for private use and 210,000 for public use, ranking first in the world, 14 times that of 2014. At present, there are 240,000 private charging piles in China, all of which are ac slow charging. Among them, 83,000 are in Beijing, 78,000 in Shanghai and 39,000 in Guangdong. The holding quantity of charging piles in three places accounts for more than 80% of the national total, and the concentration ratio is high.
Type polyether TPU sheathed cable effectively solves the traditional halogen free wire in flame retardant, soft, and other physical properties between the difficult technical problem to balance, namely on the basis of flame retardant grades, implementation of soft wire materials, and other physical indicators achieve a good balance between all reached the international standard type polyether TPU performance is good, the market price is also high. However, due to its excellent performance, the thickness of cable sheath TPU material of the same specification is only about half that of other materials, and the good economy, appearance and long service life of the cable are favored by most customers at present. In the future, TPU has a very broad development prospect.