Method and device for battery equalizing charge

Abstract

The invention discloses a method and device for battery equalizing charge. The device comprises a battery pack with a plurality of single batteries, a charger and a connecting device which comprises more than three independent conductors, wherein each conductor connects with the output end of the charger; the input end of the charger connects with a power supply through conductor wires and plugs; said more than three conductors can respectively connect with the positive and negative poles of each single battery in the battery pack in order to realize the equalizing charge for each single battery; and a battery status indicator which is arranged on the charger corresponds to each single battery in the battery pack and a charging status indicator is also arranged on the charger. Compared with the prior art, in the method provided by the invention, a plurality of charging loops are utilized to charge each single battery in the battery pack; and a plurality of charging indicators on the charger are used for indicating the battery status and the charging status, thus solving the problem that respective single batteries in the battery pack are overcharged or undercharged, thereby realizing the equalizing charge and prolonging the service life.

Description

technical field [0001] The invention relates to a battery charging method and device, in particular to a method and a charging device capable of performing balanced charging on a battery pack with multiple single batteries. Background technique [0002] The traditional battery charging method generally uses a charger to charge the battery pack in a single series. For example, when charging battery groups for electric bicycles, electric vehicles, battery stackers and electric forklifts, all single batteries in the battery group must be charged. After charging for a period of time, the voltage of some of the batteries has reached the saturation point. In addition, the voltage of some batteries has not reached the saturation point, and the entire battery pack is often charged at this time, thus causing some batteries to be overcharged. [0003] On the other hand, when the total voltage of the entire battery pack reaches the rated voltage value, the voltage of some single batte...

AI Technical Summary

Problems solved by technology

For example, when charging battery groups for electric bicycles, electric vehicles, battery stackers and electric forklifts, all single batteries in the battery group must be charged. After charging for a period of time, the voltage of some of the batteries has reached the saturation point. In addition, the voltage of some batteries has not reached the saturation point. At this time, the entire battery pack is often charged, which causes some batteries to be overcharged.

[0003] On the other hand, when the total voltage of the entire battery pack reaches the rated voltage value, the voltage of some of the individual batteries has not reached the voltage saturation point. At this time, the charger stops working, resulting in undercharging of individual batteries.

Therefore, long-term overcharging or undercharging of individual batteries in the battery pack will lead to polarization of the high and low voltage of the battery pack, which will seriously affect the service life of the battery pack.

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