Dalian Jinpu New District: Helping achieve the "dual carbon" goal and starting the construction of new energy vehicle charging network
Dalian Jinpu New District further accelerates the construction of new energy vehicle charging stations. So far, 37 charging stations and 514 charging terminals have been built, achieving a charging coverage rate of 80% within 2 kilometers of the charging network in core urban areas and 60% within 4 kilometers of charging networks in peripheral urban areas, which can meet the energy replenishment needs of nearly 10,000 new energy vehicles. .
In order to implement the national "double carbon" strategic goal, Jinpu New District has launched the construction of a new energy vehicle charging network. It plans to gradually build a "1-kilometer charging ecosystem" through three stages of construction, and then create a "charging network" A smart charging network that integrates three networks: , Internet of Vehicles, and the Internet. There are more than 20 charging stations and about 310 terminals under construction in Jinpu New District, which will further increase the coverage of the regional charging network. It is reported that Jinpu New District will accelerate the construction of various new energy vehicle charging stations, including public fast charging stations, park charging stations and community charging stations, and innovatively carry out optical storage charging and discharging demonstration station projects to facilitate the masses and promote While promoting consumption and protecting people’s livelihood, we will help accelerate the realization of the “double carbon” goal.
As we all know, electric vehicle charging piles are mainly divided into two categories, one is DC charging piles, commonly known as "fast charging piles", and the other is AC charging piles, commonly known as "slow charging piles". The charging power of DC charging piles is generally 30kW, 60kW, and 120kW, and the charging power of AC charging piles is generally 3.5kW, 7kW, and 14kW.
How to design electrical fire-proof and current-limiting protectors for these two types of charging piles has become a difficult problem for many designers. These two types of charging piles will be discussed below.
For DC charging piles, generally three-phase power outputs DC through the AC/DC module. Calculated based on 30kW, the AC side current is about 50A, and the 60kW AC side is about 100A. According to the design requirements, in the AC Install three-phase 50A/100A on the side or install a DC current-limiting protector on the DC side. Currently, all current-limiting protectors on the market are AC, and there are few three-phase current-limiting protectors. It is recommended to use an insulation monitor to monitor the insulation condition of the insulated charging pile.
For AC charging piles, the mains power is usually directly connected. Calculated based on the power of the dual-gun 14kW, the rated current is about 63A. According to the design requirements, matching electrical fire protection can be designed at the front end of the charging pile according to the rated current. Current limiting protector.
ASCP series electrical fire-proof current-limiting protectors are specially developed by Ankerui to protect short circuits, overloads and other problems in low-voltage distribution lines. They can overcome the short-circuit currents existing in traditional circuit breakers, air switches and monitoring equipment. It has disadvantages such as large, long time to cut off the short-circuit current, large arc sparks generated during short-circuit, and short service life. When a short-circuit fault occurs, the short-circuit current can be quickly limited at microsecond speed to achieve arc extinguishing protection, thereby significantly reducing electrical In case of fire accident, ensure the safety of people and property in the place of use.
ASCP series electrical fire-proof current-limiting protectors can be widely used in schools, hospitals, shopping malls, hotels, entertainment venues, temples, cultural relics buildings, libraries, archives, exhibitions, residences, warehouses, kindergartens, Line protection for terminal trunks and branches in various power consumption places such as buildings for the elderly, dormitories, electric vehicle charging stations, rental shopping malls, wholesale markets, bazaars, Class A, B and C dangerous goods warehouses.
For the protection of AC slow charging piles in electric vehicle charging stations, current-limiting protectors of different specifications can be selected according to different powers. For 3.5kW slow charging piles, ASCP200-20D can be used , for 7kW slow charging pile, you can use ASCP200-40B, for 14kW double gun slow charging pile, you can use ASCP200-63D.
When installing a current-limiting protector on an electric vehicle charging pile, it is recommended to use one charging pile and one protector. The protector is installed next to the charging pile. If it is outdoors, the protector can be installed in a waterproof box. middle.
The new energy vehicle industry continues to develop. The General Office of the State Council also recently issued the "New Energy Vehicle Industry Development Plan (2021-2035)". In 2020, more than 25,000 charging pile-related companies were added, and the industry showed a scene of hundreds of schools of thought contending. The 2021 World Intelligent and Connected Vehicles Conference will be held in Beijing, and the number of new energy vehicles in the country exceeds 6 million.
We should firmly follow national policies and strive to build new infrastructure.
Let more consumers use new energy vehicles and charge safely anytime and anywhere. Of course, while charging safely and reliably, we must also prevent electrical fires and protect people's lives and property.