Electric Bike Factory shares the basic charging methods of battery chargers with constant current charging and constant voltage charging. Constant current charging uses a constant current charging. The advantage is that it will not overcurrent and can be full. The disadvantage is that if you forget to power off later, it is easy to pass. Charging and water loss; constant voltage charging is charging with a constant voltage,

The advantage is that as the charging time increases, the charging current gradually decreases, and forgetting to manage will not damage the battery. The disadvantage is that when a battery with more discharge begins to charge, the current may be large, which is easy to cause damage to the charger and deformation of the battery plate. The most common charger is to combine the advantages of the first two, which is the so-called current limiting and constant pressure type. When this charger starts charging, it is in a current-limiting and unregulated state, and it switches to a constant voltage mode at an appropriate time according to the charging current and the battery terminal voltage. Even when a battery that has been discharged more starts to charge, the current will not be very large due to the current limiting circuit. As the charging time increases, the charging current gradually decreases, and to a certain extent, it will be converted to constant voltage charging (some instructions are called floating. Charge). This method is divided into two stages and three stages. Based on this, there is also a so-called smart negative pulse charger. In fact, in the current limit stage, the battery is short-circuited for 1-2 milliseconds every second. The battery short-circuited for 1-2 milliseconds is the discharge. The advantage is to strengthen the polar plate acceptance (charging ) The ability to cool the polar plates is beneficial to reduce the vulcanization of the polar plates. There is also a supplementary charging method that changes from charging at a later stage to constant-voltage charging to a constant-voltage pulse-width supplementary charging method, and so on. It should be particularly pointed out that for the chargers connected in series, some of them claim to be intelligent, but they only exaggerate the publicity. In fact, they are the above content. Their disadvantage is that they cannot identify the quality of each battery in the series, especially non-brand batteries. The common problem is poor consistency. Whether the charger works in current limiting or constant voltage mode is to test the total voltage in series instead of the terminal voltage of each battery to determine the decision. When the performance of one of them deteriorates, the misjudgment will accelerate the damage of the other two (either overcharged or undercharged or even reversed). The best method is also equalized charging. Here, the equalized charging is to charge each battery independently, for example, 36 volts, three 12 volt batteries are used in series. Using three notebook second-hand power supplies to transform into three 13.5V-13.9V chargers to simultaneously charge three batteries at regular intervals (that is, plug in without charging) can extend the battery life by several times.

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