Electric vehicle charging piles generally provide two charging methods: general charging and fast charging. People can use a specific charging card to swipe the card on the HMI interface provided by the charging pile to perform corresponding charging methods, charging time, and cost data printing, etc. Operation, the charging pile display can display data such as charging amount, cost, charging time and so on.
Now the new energy vehicle market is getting hotter, many people are starting to buy new energy vehicles, and many new energy vehicle owners are beginning to choose home charging piles. So, how to choose an electric vehicle charging pile? What are the precautions? Which one is better to choose? These are the concerns that users care most.
1. Considering the needs of use
Generally, cost of DC charging piles is high, and the cost of AC charging piles is lower. If it is a personal installation of charging piles, it is recommended to use AC charging piles. The maximum charging power of AC charging piles can be 7KW, and it takes 6-10 hours to fully charge on average. After returning home from work, park the electric car and charge it. Do not delay using it the next day. Moreover, the demand for power distribution is not very large, and the common 220V power supply can be connected and used. Individuals do not have too much need for charging time. DC charging piles are suitable for new residential areas, parking lots, and places with relatively large charging mobility.
2. Considering the installation
The installation cost of DC charging piles is relatively high, including the wire laying cost. The AC charging pile can be used when it is connected to a 220V power supply. The maximum charging power of the AC charging pile is 7KW, the charging power of the DC charging pile is generally 60KW to 80KW, and the input current of a single gun can reach 150A--200A, which is a huge test for the power supply line. In some old community, even one can't be installed there. The charging power of some large-scale vehicle DC charging piles can reach 120KW to 160KW, and the charging current can reach 250A. The requirements for construction wires are very strict, and the load requirements for power distribution cabinets are very high.
3. Considering the user
Certainly faster charging speed is better. It only takes a few minutes to refuel a fuel vehicle. If the charging time of an electric vehicle is too long, it will inevitably affect the user experience. If a DC charging pile is used, the charging will be completed in about an hour at most. If an AC charging pile is used, it may take 6 - 10 hours to complete the charging. If you are in urgent need of a car or run a long distance, this charging method is extremely inconvenient, and there will definitely not be a fuel car that is convenient to refuel.
Comprehensive consideration, when choosing a charging pile, you should choose a suitable charging pile according to the actual situation. Residential communities should try to choose AC charging piles, which have a small load on the power supply. Basically, everyone can accept the charging for one night after work. If it is in public places, public parking lots, public charging stations, shopping malls, theaters and other public places, it is more convenient to install DC charging piles .
How to choose a home charging pile.
Considering the cost , most of the charging piles for household cars are AC piles. So today I will talk about household AC piles, and I will not go into details about DC piles. Before discussing how to choose a pile, let 's talk about the classification of household AC charging piles.
Categorized by installation method, it is mainly divided into two categories: wall-mounted charger and portable charger.
The wall-mounted type needs to be installed and fixed on the parking space, and it is divided by power. The mainstream is 7KW, 11KW, 22KW.
7KW means charging 7 kWh in 1 hour, which is about 40 kilometers
11KW means charging 11 kWh in 1 hour, which is about 60 kilometers
22KW means charging 22 kWh in 1 hour, which is about 120 kilometers
Portable charger, as the name implies, it can be moved, does not require fixed installation. It does not require wiring, and uses a household socket directly, but the current is relatively small, 10A, 16A are the most commonly used. The corresponding power is 2.2kw and 3.5kw.
Let's discuss how to choose a suitable charging pile:
Firstly, consider the degree of suitability of the model
Although all charging piles and car charging interfaces are now manufactured in accordance with the new national standard, they are 100% matched to each other for charging. However, the maximum charging power that different models can accept is not determined by the charging pile , but by the on-board charger in the car . In short, if your car can only accept a maximum of 7KW, even if you use a 20KW power charging pile, it can only be at a speed of 7KW.
Here are roughly three types of cars:
① Pure electric or hybrid models with small battery capacity, such as HG mini, on-board charger power of 3.5kw, generally 16A, 3.5KW piles can meet the demand;
② Pure electric models with larger battery capacity or extended-range hybrids (such as Volkswagen Lavida, Ideal ONE), with a power of 7kw on-board chargers, can match 32A, 7KW charging piles;
electric models with high battery life , such as Tesla's full range and Polestar's full range of on - board chargers with a power of 11kw, can match the 380V11KW charging pile
Secondly, users should also consider the home charging environment
In addition to considering the adaptation of the car and the pile, it is also necessary to understand the power situation of your own community. The 7KW charging pile is 220V, you can apply for a 220V meter, and the 11KW or higher power charging pile is 380V, you need to apply for 380V 's electricity meter.
At present, most residential quarters can apply for 220V meters, and villas or self-built houses can apply for 380V meters. Whether or not the meter can be installed, and what type of meter to install, you need to apply to the property and power supply bureau first (the application is approved, and the power supply bureau will install the meter for free) for opinions, and their opinions shall prevail.
Thirdly, users need consider the price
The price of charging piles varies greatly, ranging from hundreds to thousands of RMB, causing the price difference. The most important thing is the difference in power. The price of 11KW is about 3000 or more, the price of 7KW is 1500-2500, and 3.5 The portable price of KW is under 1500.
combining the two factors of the adapted model and the home charging environment , the charging pile of the required specification can basically be selected, but even under the same specification, there will be a price gap of 2 times. What is the reason for this gap?
First of all, the manufacturers are different
The brand power and premium of different manufacturers are definitely different. How laymen distinguish the brand from the quality depends on the certification. CQC or CNAS certification means compliance with relevant national requirements and regulations, and it is also an important indicator for car companies to evaluate when selecting supporting suppliers.
The product materials are different
The materials used here include 3 aspects: shell, process, circuit board shell are installed outdoors, not only to deal with high temperature or low temperature environments, but also to prevent rain and lightning, so the protection level of the shell material must not be lower than IP54 level, and in order to adapt to various bad weather, to deal with changes in temperature difference, material The PC board is the best, it is not easy to become brittle, and it can better withstand high temperature and aging. Piles with good quality are generally made of PC material, and the quality is generally made of ABS material, or PC+ABS mixed material
The tip products of brand manufacturers are one-time injection molding, the material is thick, strong and resistant to falling, while those of ordinary manufacturers are injection-molded in separate pieces, which will crack as soon as they are dropped; The number of times of pulling is more than 10,000 times, and it is durable. The tips of ordinary manufacturers are nickel-plated and are easily damaged.
The circuit board of the high-end pile is an integrated circuit board, and there is only one board inside, and it has undergone high-temperature durability experiments, which is relatively reliable, while the circuit boards of ordinary manufacturers are non-integrated and may not have undergone high-temperature experiments.
The conventional startup methods include plug-and-charge and credit card charging. Plug and charge is not secure enough, and there is a risk of electricity theft. Swiping the card to charge will need to save the card, which is not very convenient. At present, the mainstream startup method is to make an appointment for charging through the APP , which is both safe and can be charged on demand, enjoying the dividends of the valley electricity price. The powerful charging pile manufacturers will develop their own APP, from hardware to software, to provide comprehensive services to customers.
Post time: Sep-28-2022