What are the characteristics of batteries for electric vehicles?

Electric vehicle battery discharge, with direct current in the opposite direction to the discharge current through the battery, so that it restores the ability to work, this process is called battery charging. Battery charging, the positive terminal of the battery is connected to the positive terminal of the power supply, the negative terminal of the battery is connected to the negative terminal of the power supply, the charging power supply voltage must be higher than the total electromotive force of the battery. There are two types of charging methods: constant current charging and constant voltage charging.

Electric vehicle charging technology charging method research: conventional charging system is based on the design of the internationally recognized rules of thumb before 1940. One of the most famous is the "ampere-hour rule": the charging current amperage, should not exceed the number of ampere-hours of the battery to be charged. In practice, the rate of conventional charging is limited by the temperature rise and gas generation of the battery during the charging process. This phenomenon is important for the minimum time necessary to charge the battery.

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