Pengzhou Electric Vehicle Maintenance Project
The country attaches great importance to the development of new energy vehicle charging equipment, and all regions will naturally increase efforts to promote development. Taking Nanning as an example, it is estimated that by 2020, there will be about 21550 new energy vehicles in Nanning. In order to meet the charging needs of the majority of car users, by 2020, Nanning will need nearly 20000 charging poles and nearly 100 charging stations. At present, the development of electric vehicle public charging equipment in Nanning is still in the primary stage. At present, the number of electric vehicles and the number of charging piles are seriously unbalanced, and the phenomenon of vehicles without piles and piles without vehicles occurs from time to time. The main reason is that the all smart service platform has not been built yet and needs further improvement.
Pengzhou Electric Vehicle Maintenance Project
At present, solar cells are divided into several types according to the raw materials, structures and manufacturing methods used. Among them, crystalline silicon solar cells mostly refer to monocrystalline silicon solar cells and polycrystalline silicon solar cells using silicon semiconductor substrates as raw materials; In addition, there are amorphous silicon solar cells, which are made by evaporating amorphous silicon on glass substrates rather than silicon substrates based on the same film preparation method as liquid crystal panels. Monocrystalline silicon solar cells form solar cells on monocrystalline silicon substrates, and there are also products with conversion efficiency up to about 20%, which have excellent performance and reliability. However, the price of silicon substrate as raw material is expensive, and the power generation cost per watt is high. Although the conversion efficiency of polycrystalline silicon solar cells is lower than that of monocrystalline silicon solar cells, they have the advantage of relatively low cost.
Pengzhou Electric Vehicle Maintenance Project
What should be paid attention to when charging electric vehicle batteries? When the electric vehicle starts and goes uphill, it is necessary to avoid emergency braking and acceleration as much as possible, because large current discharge will be formed during this process, which will damage the performance of the battery. There are also two points that need special attention when stopping for a long time. 1. Parking without power supply should be avoided: unlike traditional gasoline vehicles, electric vehicles have their own "unique taste" for the state of vehicle parking. If the "hungry stomach" is used too long, it will "rebel". When the electric vehicle is parked in the case of power loss, the battery is prone to sulfation, blocking the electric ion channel, resulting in insufficient charging and declining battery capacity. 2. Deep discharge shall be carried out regularly: when the electric vehicle is almost out of power, undervoltage protection will automatically occur, but during this process, its voltage is unstable, and it will also be up and down, causing repeated undervoltage protection status
Pengzhou Electric Vehicle Maintenance Project
Any problems arising from development must be solved with a development perspective and innovative practice. By innovating the operation mode of "mixed ownership", Shenzhen has solved the problem of "one kilometer after Z" in the promotion of new energy public transport, and the measures to realize the pure electrification of exclusive public transport are worthy of reference for the industry. "The charging pile has a large capital investment and rapid technology update. Without the intervention of companies with technical reserves and market power, it would be difficult for enterprises to survive." As one of the top three bus companies in Shenzhen, Yu Gang, the chairman of Shenzhen Bus Group, has a deep understanding of the "charging pile problem" encountered in the promotion of pure electric bus. Yu Gang introduced that the public transport group in a city in China had invested more than 200 million yuan to build 200 charging piles, each charging pile cost about 1 million yuan, 2-3 times the market price. Z could not recover the cost at last, and because it could not keep up with the technology update, many equipment was currently idle.
