OEM 100 kw ev dc ac charging station manufacturer factory

In recent years, the popularity of electric vehicles has become higher and higher, and we see more and more green cars. As one of the basic supporting facilities of electric vehicles, the charging pile market has developed rapidly and gradually entered the public view. Charging has also become the daily demand of electric vehicle owners.

So, what are the knowledge points that owners must get about electric vehicle charging?

What are the charging methods for electric vehicles?

At present, there are five charging methods for electric vehicles, namely, slow charging, fast charging, power change, wireless charging and mobile charging. Most electric vehicles in the market support slow charging and fast charging, and are equipped with slow charging and fast charging interfaces. Other charging methods have not been widely used.

Slow charging: also known as conventional charging and on-board charging, it is applicable to on-board charger and family wall mounted charging pile. The charging current and power are relatively small, and the charging time is generally 6 to 8 hours.

Fast charging: also known as ground charging and emergency charging, it includes two forms: charging station and mobile charging trolley. It mainly uses large current to directly charge the battery through the off-board charger, so that the battery can be charged to about 80% of the power in a short time. Generally, it can be fully charged in one hour.

Power change: charge the car battery by replacing the power battery. That is, when the power battery is exhausted, replace the battery pack with a fully charged battery, and send the replaced battery to the replacement station for slow charging.

Wireless charging: when wires and cables are not used, the wireless charging source board embedded in roads and parking spaces is automatically connected to the power grid for charging and discharging. This charging method is convenient and safe to use, but it has not been used in mass production for the time being.

Mobile charging: namely mobile charging (MAC), which is an extension of wireless charging. Electric vehicle owners do not need to look for a charging station. They spend time to charge it. They can charge it when cruising on the road. The mobile charging system will be buried under a section of road, marking out the charging section, and no additional space is required.

Will the battery be lost by using fast charging?

To be exact, frequent fast charging will cause some damage to the battery compared with slow charging.

Because the fast charging adopts a current several times or even 10 times higher than the standard charging current. In the fast charge mode, when the charge reaches about 80%, the subsequent charge will be filled in the form of slow charge. If fast charging is used frequently, it will accelerate the polarization of the battery cell, resulting in lithium evolution of the cell.

In the process of lithium precipitation, lithium ions will decrease, which will eventually lead to the decline of battery capacity, and then affect the battery life. However, in addition to the lithium iron phosphate battery, the lithium metal will return to lithium ion and the critical temperature will return to normal after a short rest after fast charging. However, frequent fast charging will reduce the reduction capacity of the battery.

In order to ensure that the electric vehicle can better solve the range, the owner can choose the practice of "daily slow charging and emergency fast charging", or supplement it by slow charging once a week.

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