OEM ODM portable ev charging cable For Sale

Electric vehicle charging station is a station for charging electric vehicles. With the popularity of electric vehicles, electric vehicle charging stations will definitely become the focus of the development of the automotive industry and energy industry. Electric vehicle charging stations can better solve the problem of fast charging, energy saving and emission reduction.

Origin of Electric Vehicle Charging Station

The development of electric vehicle charging stations in China is inevitable, and seizing the first opportunity is also the way to win for enterprises. At present, although the state has strongly advocated and the enterprises are eager to move, it is not easy to get electric cars into the common people's home in the short term. National policy can give (car purchase compensation, on the road, etc.), while the electric car charging station network can not be built in the short term, mainly because the rapid charging of electric vehicles need instant powerful power electricity, the conventional power grid can not meet, must build a special charging network, which involves the entire national grid transformation, the national grid transformation is not trivial, costly, from the discussion, the project to become a network, not overnight can be achieved.

Charging method

After the electric car battery is discharged, DC electricity is passed through the battery in the direction opposite to the discharge current to restore its working ability, a process called battery charging. When charging the battery, the positive terminal of the battery is connected to the positive terminal of the power supply, and the negative terminal of the battery is connected to the negative terminal of the power supply, and the voltage of the charging power supply must be higher than the total electric potential of the battery. There are two charging methods: constant current charging and constant voltage charging.

✔️Constant current charging method

Constant current charging method is a charging method that uses the method of adjusting the output voltage of the charging device or changing the resistance in series with the battery to keep the charging current intensity constant. The control method is simple, but because the acceptable current capacity of the battery is gradually decreasing with the charging process, to the late stage of charging, the charging current is mostly used for electrolysis of water, generating gas and making the outgassing too much, therefore, the stage charging method is often chosen.

✔️Constant voltage charging method

The voltage of the charging power supply maintains a constant value during all the charging time, and the current gradually decreases as the terminal voltage of the battery gradually increases. Compared with the constant current charging method, the charging process is closer to the optimal charging curve. With constant voltage fast charging, the charging current is high due to the low electric potential of the battery at the beginning of charging, and the current will gradually decrease as the charging proceeds, so only a simple control system is needed.

This charging method has little electrolytic water and avoids overcharging the battery. However, the current is too high at the beginning of charging, which has a great impact on the battery life, and it is easy to make the battery pole plate bend, causing the battery to be scrapped. In view of this shortcoming, constant voltage charging is rarely used, only when the charging power supply voltage is low and the current is high. For example, during the operation of the car, the battery is charged with constant voltage charging method.

Conclusion

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