The 7KW AC charging station motherboard and the 3.5KW AC charging station motherboard each have their own

 characteristics in household use. The following is a specific comparison:

Charging speed

• 7KW AC charging station motherboard: The rated power is 7 kW, the rated current is usually 32A, and the charging speed is relatively fast. Taking an electric vehicle with a battery capacity of 40kWh as an example, it takes about 5-6 hours to fully charge using a 7KW slow charging station from completely dead.

• 3.5KW AC charging station motherboard: The rated power is 3.5 kW, the rated current is 16A, and the charging speed is slow. Using a 3.5KW slow charging station for the same vehicle requires nearly twice the time, which is 11-12 hours.

he impact on household circuits

• 7KW AC charging station motherboard: When working, the current is relatively high, and the load requirements for household circuits are high. Generally, the wire diameter of household circuits is required to be at least 6 square millimeters, and a 32A air switch and a 40A leakage protection device need to be equipped. If the capacity of the home circuit is insufficient, it may be necessary to upgrade and modify the circuit, such as replacing the meter, wires, etc.

• 3.5KW AC charging station motherboard: With low power and relatively low current, it has low load requirements for household circuits. Generally, existing household circuits can meet its usage requirements without the need for additional modifications to the circuit.

Charging efficiency

• 7KW AC charging station motherboard: Although theoretically faster, there will be a certain power loss during the actual charging process, usually around 5% -10%. However, even so, its charging efficiency advantage over 3.5KW charging piles is still significant.

• 3.5KW AC charging station motherboard: Due to the low charging power, the heat generated during the charging process is relatively small, and the temperature rise control of the battery is more precise, which helps to extend the service life of the battery, especially suitable for long-term slow charging scenarios.

Function and Experience

• 7KW AC charging station motherboard: often equipped with intelligent display screen, mobile APP remote control, scheduled charging and other functions, making the charging process more convenient and intelligent. At the same time, it has multiple safety protection mechanisms, such as overvoltage protection, undervoltage protection, overcurrent protection, etc., to ensure the safety and reliability of the charging process.

• 3.5KW AC charging station motherboard: The function is relatively simple, usually only having basic charging functions and necessary safety protection measures, such as leakage protection, over temperature protection, etc., but it is sufficient to meet basic needs for use in home environments.

Price

• 7KW AC charging pile motherboard: Due to its high power and relatively high technical content, its price is usually higher than that of 3.5KW AC charging pile motherboard. Generally speaking, the price of a high-quality 7KW AC charging station motherboard is around 1000 yuan, while the overall price of the supporting charging station may be around 2000-3000 yuan.

• 3.5KW AC charging station motherboard: The price is relatively low, usually around 200-300 yuan, and the overall price of the supporting charging station may be around 1000-2000 yuan, which has a certain price advantage.

Applicable scenarios

• 7KW AC charging station motherboard: More suitable for household users who have high requirements for charging time, such as those who commute long distances, need to use vehicles frequently, or have multiple electric vehicles at home that need to be charged.

• 3.5KW AC charging station motherboard: suitable for household users who do not require high charging time or frequent charging needs, such as the elderly and short distance travel users. At the same time, in some areas with tight power supply, 3.5KW charging piles have a smaller load on the power grid and are also more advantageous.
  
  

In summary, if household electricity conditions permit and there are high requirements for charging time, a 7KW AC charging station motherboard is more suitable; If the requirements for charging time are not high, and cost-effectiveness and minimal impact on the power grid are emphasized, a 3.5KW AC charging pile motherboard is a good choice.