Tongren Guangxi Charge Point Service Provider
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.
Tongren Guangxi Charge Point Service Provider
Safety requirements (1) The substation shall be equipped with safety bulletin board, warning board, safety signal light and alarm bell. (2) The warning sign of "Stop, High Voltage Danger" shall be hung outside the door of the high-voltage distribution room and transformer room or on the safety column of the substation. The warning signs must face the outside of the fence. (3) There shall be obvious operation instructions on the high-voltage distribution device. The grounding point of the equipment shall have obvious signs. (4) There should be obvious signs of "safe passage" or "emergency exit" in the room. In addition, the layout design of substation and distribution equipment shall facilitate installation, operation, handling, maintenance, test and monitoring. High and low voltage distribution room, transformer room, capacitor room and control room should not have unrelated pipes and lines passing through. New energy vehicles should first focus on cities, but the busy IX region is often short of land, and the cost of land is high. In this regard, the government needs to give preferential policies to promote the construction of charging facilities. The development and operation of electric vehicle charging stations by electric power enterprises have inherent advantages.
Tongren Guangxi Charge Point Service Provider
AC type: Technical requirements for AC charging pile (plug) 1. Requirements for environmental conditions: ① Working environment temperature: - 20 ℃~+50 ℃; ② Relative humidity: 5%~95%; ③ Altitude: ≤ 1000m; ④ Installation site: outdoor; ⑤ Seismic capacity: ground horizontal acceleration 0.3g; Ground vertical acceleration 0.15g; The equipment shall be able to withstand three continuous sine waves under simultaneous action, and the safety factor shall be greater than 1.67; 2. Structural requirements: ① The shell of AC charging pile (bolt) shall be firm; ② In structure, it is necessary to prevent hands from easily touching the exposed part; ③ The AC charging post (bolt) shall be a steel composite structure with a thickness of more than 1.0, and the surface shall be treated with plastic immersion, and the requirements for heat dissipation shall be fully considered. The charging pile (bolt) shall have good shielding function against electromagnetic interference; ④ The charging pile (bolt) shall have sufficient support strength;
Tongren Guangxi Charge Point Service Provider
DC piles are the inevitable choice of public piles in the future: at present, the proportion of public AC and DC charging piles remains around 6:4, and the proportion of AC piles is more, mainly because in the early stage of the industry development, slow charging AC piles are very suitable for manufacturers to seize the market, relying on the characteristics of simple structure, mature technology and low cost, However, after the technology and market of charging piles become mature, DC piles are the inevitable choice for future public charging piles. The average charging time of the DC charging pile is 1 hour and 54 minutes. 85% of the users can finish charging within 2.5 hours, while the average charging time of the AC charging pile is 5 hours and 45 minutes. 66.2% of the users need more than 5 hours of lengthy charging time. The difference between the two nearly 4 hours of time directly determines the obvious use preference of the car owner Z.
Tongren Guangxi Charge Point Service Provider
Functional features: 1. Provide human-computer interaction; Provide DC and AC charging interfaces; 2. With voice prompt function; With card swiping function; 3. It has the function of printing vouchers; 4. Real time communication with BMS to obtain information such as power battery type, unit voltage, residual capacity, temperature and alarm; 5. Generate control commands and switch signals to the charger, control the start and stop of the charger, and obtain the status information of the charger; 6. Complete safety protection control logic such as connection state judgment, interlocking, control guidance of charging interface; 7. With CAN2.0B and RS485 communication interfaces, it can communicate with centralized monitoring and submit charging status information; 8. It has the protection functions of electric leakage, short circuit, overvoltage, undervoltage, overcurrent, etc. to ensure the safe and reliable operation of the charging pile (plug); The protection grade is IP54.
Tongren Guangxi Charge Point Service Provider
On board charging device refers to the device installed on the electric vehicle that uses the ground AC power grid and the on-board power supply to charge the battery pack, including the on-board charger (Figure 1-13), the on-board charging generator set and the operating energy recovery charging device. A AC power cable with a plug is directly inserted into the charging socket of the electric vehicle to charge the battery. On board charging devices usually use contact chargers with simple structure and convenient control, or inductive chargers. It is designed completely according to the type of on-board battery, with strong pertinence. Off board charging device, i.e. ground charging device, mainly includes special charger, special charging station, general charger, charging station for public places (Figure 1-14), etc. It can meet various charging modes of various batteries. Generally, the off board charger has large power, volume and weight to adapt to various charging modes.
