Chengdu Private Car Charging Pile Service Center
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
Chengdu Private Car Charging Pile Service Center
Miao Wei, minister of the Ministry of Industry and Information Technology, said at the China Electric Vehicle Hundred Talents Forum (2018) that the current vehicle to pile ratio of 3.5:1 across the country still cannot meet consumers' demand for charging. With the continuous growth of the number of new energy vehicles, the problem of insufficient structural supply of charging infrastructure has become increasingly prominent, and the overall scale is still lagging behind. In 2020, China plans to build about 500000 public charging piles. However, compared with the annual production and sales of 2 million vehicles and 5 million vehicles in the 2020 plan, the number of charging piles still does not match, and the vehicle pile ratio even tends to deteriorate. In addition, the layout of charging facilities in China is also not reasonable. The utilization rate of public charging piles is less than 15%. A sustainable business development model has not yet been formed. There is still a two-way contradiction between operating enterprises' profitability difficulties and consumers' high charging prices.
Chengdu Private Car Charging Pile Service Center
9. Anti rust (anti oxidation) protection The iron shell of the charging pile (bolt) and the exposed iron support and parts shall be provided with double-layer anti rust measures, and the non-ferrous metal shell shall also be provided with anti oxidation protective film or anti oxidation treatment; 10. The wind protection charger installed on the platform and exposed parts shall be able to withstand the relative wind speed in different areas and at different heights specified in Table 9 of GB/T 4797.5-9 Natural Environmental Conditions for Electrical and Electronic Products - Precipitation and Wind; 11. The shell door of the anti-theft protection electric pile (bolt) shall be equipped with an anti-theft lock, and the bolt fixing the AC charging pile (bolt) must be installed or removed after opening the shell door; 12. The temperature rise requires that the AC charging pile (plug) operates continuously under rated load for a long time, and the temperature rise of internal heating elements and parts shall not exceed the provisions in Table 2 of Q/GDW 397 2009;
Chengdu Private Car Charging Pile Service Center
The scheme of the charger in the ground charging station, which is composed of a rectifier that can convert the input AC power into DC power and a power converter that can adjust the DC power. By inserting the plug with wires into the supporting socket on the electric vehicle, DC power is input into the battery to charge it. The charger is equipped with a locking lever to facilitate the insertion and removal of the plug. At the same time, the lever can also provide a signal to confirm that it has been locked to ensure safety. According to the communication between the charger and the on-board battery management system, the power converter can adjust the DC charging power online, and the charger can display the charging voltage, charging current, charging amount and charging cost. This is just the basic principle of the charging pile. Many details should be constantly improved in practical application, and a convenient use scheme has been obtained.
Chengdu Private Car Charging Pile Service Center
The charging pile industry comes with the development of new energy vehicles. In 2020, the charging pile will be included in the new infrastructure and written into the government work report, which will become the precondition for developing new energy vehicles, stimulating new consumption demand and helping the industry upgrade. Under the exploration of new business model and the guidance of a new round of policies, new channels for the development of charging piles have been opened, ushering in new opportunities. The charging pile industry chain is divided into supply terminals such as equipment manufacturers and power suppliers, operation terminals such as operators and new energy vehicle enterprises, and support terminals such as map navigation and payment functions. The core link is the operation end, which is responsible for the investment, construction and operation management of the charging pile. At present, Chinese funded enterprises, private capital and vehicle enterprises are all involved in the operation.
Chengdu Private Car Charging Pile Service Center
As the energy supply device of electric vehicle, the charging performance of electric vehicle charging post is related to the service life and charging time of the battery pack. This is also one of the aspects that consumers are most concerned about before buying electric vehicles. It is the basic principle for the design of electric vehicle charger to realize fast, efficient, safe and reasonable power supply for the power battery. In addition, the applicability of the charger to various power batteries should also be considered. The control system of the fast charger consists of: the control system of the fast charger adopts an intelligent variable pulse charging mode, that is, charging current pulse, including charging pulse T1, intermittent pulse T2 and discharge pulse T3.
