EVCOME EV charging stations for better life---Top EV charging stations manufacturers & suppliers in China.
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EVCOME EV charging stations for better life---Top EV charging stations manufacturers & suppliers in China.
After the electric vehicle battery is discharged, direct current is passed through the battery in the opposite direction to the discharge current to restore its working capacity. This process is called battery charging. When the battery is charging, the positive pole of the battery is connected to the positive pole of the power supply, and the negative pole of the battery is connected to The negative pole of the power supply is connected, and the voltage of the charging power supply must be higher than the total electromotive force of the battery. There are two charging methods: constant current charging and constant voltage charging. 1. The constant current charging method, the constant current charging method is to adjust the output voltage of the charging equipment or change the resistance in series with the battery to keep the charging current intensity constant. The control method is simple, but due to new energy charging Pile manufacturers believe that the current capacity of the battery gradually decreases as the charging process progresses. In the later stage of charging, the charging current is mostly used for electrolyzing water, generating gas, and causing excessive gas output. Therefore, stage charging is often used. . Second, stage charging method. This method includes two-stage charging method and three-stage charging method. ① The two-stage method adopts a fast charging method combining constant current and constant voltage. The main car charging pile manufacturer charges with a constant current to a predetermined voltage value, and then changes to a constant voltage to complete the remaining charging. Generally, between the two stages The conversion voltage is the constant voltage of the second stage. ②Three-stage charging method The car charging pile uses constant current charging at the beginning and end of charging, and constant voltage charging at the center. When the current decays to a predetermined value, it is changed from the second stage to the third stage. This method can reduce the gas output Reduced to. There are few charging piles for pure electric vehicles, but as a fast charging method, it is subject to certain restrictions. Third, the constant voltage charging method, the voltage of the charging power source maintains a stable value throughout the charging time, and as the voltage of the charging pile solution at the battery end gradually increases, the current gradually decreases. Compared with the constant current charging method, the charging process is closer to In the best charging curve, charge quickly with a stable voltage. Because the electromotive force of the battery is lower than that of the charging pile at the initial stage of charging, the charging current is very large. As the charging progresses, the current will gradually decrease. Therefore, only a simple control system is required. Smart charging piles provide charging services for electric vehicles, and are committed to making charging piles in all places can be charged, enabling electric vehicles at any time, so that your electric vehicles can be driven at any time, smart charging piles, first of all, with the help of the Internet and mobile payment smart devices, Provide intelligent charging pile ODM service for community residents. At present, the penetration rate of smart charging piles for battery cars is far from enough. There are still many residential areas and commercial areas that have launched smart charging piles for battery cars. Employees provide an area where they can park electric bicycles, and at the same time, they can replenish energy for their electric bicycles in time to prepare for the next trip, charging pile OEM.
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