Equilibrium charging method of batteries

Abstract

The invention discloses an equilibrium charging method of batteries, and belongs to the field of equilibrium charging. The equilibrium charging method comprises a main circuit, a plurality of single lithium batteries, a plurality of single lithium battery protection chips, a charge control MOS transistor grid, a discharge control MOS transistor grid, a charge control switching device, a control circuit and a discharge control switching device, wherein one pin of each single lithium battery protection chip is connected with a shunt discharge branch, and the shunt discharge branch is further provided with a branch resistor and a shunt discharge branch switching device. The equilibrium charging method can protect the battery pack and automatically charge and cut off the power supply, can realize the advantage of equilibrium charge, and solves the problem that the existing battery equilibrium charging method mostly realizes equilibrium charge at the charger end, the chargers for equilibrium charge are mostly customized and thus only suitable for batteries with corresponding models, the limitation is great, and the design and application cost of the lithium battery pack charger is increased.

Description

technical field [0001] The invention relates to the field of balanced charging, and more specifically, relates to a battery balanced charging method. Background technique [0002] Balanced charging, referred to as equalized charging, is charging to balance the characteristics of the battery. It means that during the use of the battery, due to individual differences in the battery, temperature differences and other reasons, the battery terminal voltage is unbalanced. In order to avoid the deterioration of this unbalanced trend, It is necessary to increase the charging voltage of the battery pack and activate and charge the battery to achieve a maintenance method to balance the characteristics of each battery in the battery pack and prolong the battery life. [0003] Most of the existing battery equalization charging methods are to achieve equalization charging at the charger end, and most of the chargers used for equalization charging are specially customized, so they are onl...

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Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a battery equalization charging method, which has the advantages of being able to protect the battery pack, automatically charging and powering off, and being able to achieve balanced charging, and solves the existing battery balancing problem. Most of the charging methods are to achieve balanced charging at the charger end, and the chargers used for balanced charging are mostly customized, so they are only suitable for the corresponding type of battery, which has relatively large limitations and increases the cost of lithium battery pack charger design and application. The problem

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