Efficient battery energy overall balancing method

Abstract

The invention discloses an efficient battery energy overall balancing method. according to the efficient battery energy overall balancing method, the battery energy overall balance comprises a batterypack and a balance system. The battery pack is formed by connecting a plurality of single batteries in series through a circuit. The balance system is composed of a plurality of balance units, each balance unit corresponds to each single battery one to one, and the balance units are used for balancing the voltage of the single batteries and battery series-connection overall voltage. The balance unit comprises a voltage detection module, an intelligent control module and a boosting module. The voltage detection module is used for detecting the voltage of the single batteries on the series batteries. The output end of the voltage detection module is electrically connected with the input end of the intelligent control module. The output end of the intelligent control module is electrically connected with the boosting module. The boosting module is used for boosting voltage of the single battery detected by the voltage detection module in an overcharge state, so that voltage of the singlebattery is boosted to the overall voltage of battery series connection. The method has the advantages that the battery overheat protection circuit is different from adjacent balance and resistance balance, the whole battery balance is achieved, no loss is caused, the power balance efficiency is high, the battery is accurately tracked and protected, overheating of the battery is avoided, and energy is saved.

Description

Technical field: [0001] The invention belongs to the technical field of battery capacity balance, and in particular relates to an efficient overall battery energy balance method. Background technique: [0002] The battery components are connected in series and parallel. The parallel battery pack requires the same voltage of each battery, and the output voltage is equal to the voltage of one battery. The parallel battery pack can provide stronger current. The series battery pack is to obtain high voltage, the most common application It is new energy vehicles, UPS uninterruptible power supply, and applications that require DC high voltage. In these applications, dozens or even hundreds of battery cells are used in series. In the series battery pack, the difference between the cells is always It is inevitable. Taking the capacity as an example, the difference will never disappear. With the increase of the number of charging and discharging, the capacity difference will graduall...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an efficient battery energy overall balance method in order to solve the above problems. It solves the problem that when charging batteries connected in series at present, the charging efficiency is different due to the different performance of the batteries. Some batteries are fully charged, and some batteries are not Reaching, causing some of the single cells on the battery pack to be overcharged or not yet fully charged, and even cause the battery to overheat, which is not conducive to energy saving and charging protection of the battery.

Images