The car electric charger home is mainly composed of the charging pile body, charging gun, charging cable, power supply and control system, etc., which are characterized by easy use, high safety, and long service life. There are two installation methods of charging piles: built-in type and wall-mounted type, among which the wall-mounted charging pile is simple and convenient to install, which is suitable for the needs of most home users.
The difference between fast charging and slow charging
1. The charging speed is different
Fast charging, as the name suggests, is fast. It can fully charge an electric vehicle in a shorter period of time, and the charging process can usually be completed in tens of minutes. Slow charging, on the other hand, refers to a slower form of charging, which typically takes several hours to fully charge. This means that for users, fast charging can extend the range of an electric vehicle faster.
2. The charging power is different
Fast charging stations have a high power output, typically reaching tens of kilowatts or even hundreds of kilowatts. This high-power charging method can quickly deliver power to electric vehicles. Slow charging, on the other hand, has a lower charging power, typically between a few kilowatts and a dozen kilowatts. Despite the slow charging speed of slow charging, its lower power output can reduce the pressure on the charging equipment and extend the service life of the charging equipment.
3. The scope of application of charging is different
Fast charging is mainly used in scenarios where electric vehicles need to be charged quickly, such as long-distance travel or when there is an urgent need to increase the range. Slow charging, on the other hand, is suitable for long-term stays, such as charging at home or at work for a long time. Slow charging can better combine EV charging with parking time, providing a more convenient charging service.
4. Security varies
Due to the high power output of fast charging piles, a certain amount of heat is generated when charging. Therefore, fast charging piles need to adopt a more complex heat dissipation system to ensure the safety and stability of the charging pile. However, the power of the slow charging pile is low, and the heat dissipation requirements of the charging pile itself are relatively low, so its design and maintenance costs are relatively low.
Charging method of charging pile
There are two charging methods: constant current charging and constant voltage charging.
(1) Constant current charging method
The constant current charging method is a charging method that uses the method of adjusting the output voltage of the charging device or changing the series resistance with the battery to keep the charging current intensity unchanged. The control method is simple, but because the acceptable current capacity of the battery is gradually decreasing with the charging process, in the later stage of charging, the charging current is mostly used for electrolysis of water, producing gas, and making the gas output too high; therefore, the stage charging method is often selected.
(2) Constant-voltage charging method
The voltage of the charging power supply remains constant throughout the charging time, and the current gradually decreases as the voltage at the end of the battery gradually increases. Compared with the constant-current charging method, the charging process is closer to the optimal charging curve. Fast charging with constant voltage is required because the battery electromotive force is low at the beginning of charging, the charging current is very large, and as the charging progresses, the current will gradually decrease, so only a simple control system is required.
The difference between DC charging piles and AC charging piles
(1) AC charging pile:
The AC electric vehicle charging pile, commonly known as "slow charging," is a power supply device that is fixedly installed outside the electric vehicle and connected to the AC power grid to provide AC power for the on-board charger of the electric vehicle (that is, the charger fixed on the electric vehicle). The AC charging pile only provides power output, has no charging function, and needs to be connected to the on-board charger 
to charge the electric vehicle. It is equivalent to just playing the role of controlling the power supply.
Charging stations are currently divided into Car Electric Charger Home and DC charging piles. The output of AC pile single-phase/three-phase alternating current is converted into DC power to charge the on-board battery through the on-board charger, and the power is generally small (7 KW, 22 KW, 40 KW, and other powers), and the charging speed is generally slow, so it is generally installed in the car park of the community.
(2) DC charging pile:
A DC electric vehicle charging station, commonly known as "fast charging," is a power supply device that is fixed outside the electric vehicle, connected to the AC power grid, and can provide DC power for the power battery of the off-board electric vehicle. The input voltage of the DC charging pile is three-phase, four-wire AC 380 V ±15%, the frequency is 50 Hz, and the output is adjustable DC power, which directly charges the power battery of the electric vehicle. Since the DC charging pile adopts a three-phase, four-wire power supply, it can provide sufficient power, and the output voltage and current adjustment range are large, which can meet the requirements of fast charging.
A DC charging pile (or off-board charger) is used to directly output DC power to charge the on-board battery with large power (60 KW, 120 KW to 200 KW, or even higher) and fast charging speed, so it is generally installed in charging stations next to highways.
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Q: Can car electric charger home be connected to multiple models of electric vehicles?
A: Yes. At present, the home charging piles on the market all support multiple models of electric vehicles, including Tesla and overseas brands. When choosing a charging station, we need to confirm whether the selected charging station supports the model you own.
Q: Are there a lot of safety issues when using home charging piles?
A: Under normal circumstances, home charging piles are very safe to use. There are some safety issues that need to be paid attention to only when installing and maintaining. In order to avoid potential safety hazards, it is recommended that you decide brands and products that meet authoritative standards, purchase products and receive real services in formal channels.
Q: Is the charging pile easy to use?
A: With the continuous progress of technology, the use of charging piles is becoming more and more convenient. At present, many charging piles are intelligently designed, which can remotely control the charging progress through the mobile phone APP, and also support the automatic charging function without manual intervention. At the same time, many commercial charging stations support simultaneous charging of multiple piles, which can meet the needs of consumers for multiple electric vehicles.
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