Universal quick charging method for chargeable battery

Abstract

The invention discloses a universal fast charging method of batteries which can be charged, measuring receivable extent from battery to current to determine the magnitude and turn-on / off of corresponding charging current, by this, during charging, it can effectively avoid or reduce marginal reactions such as electrolyte electrolysis in a battery, current charging effect enhancement, etc; it can reduce electrode polarization phenomenon, and enhance charging efficiency by finding a charging current according with or lighter than battery charging extent; it also includes intermittent charging method and short-time reversely charging to effectively reduce the phenomena of electrode polarization and heating of battery during charging.

Description

technical field [0001] The invention relates to a charging method for a rechargeable battery. Background technique [0002] The charging methods and devices for various rechargeable batteries are a relatively mature field. Generally speaking, the charging methods of rechargeable batteries are mostly constant current charging, constant voltage charging and the combination of these two charging methods. These methods have the advantages of simple charging circuit and easy charging method, but they also have the advantages of slow charging speed, The disadvantages of low charging efficiency, reduced battery life and fast charging with high current can easily cause the battery temperature to be too high. With the development and progress of semiconductor components, some more complex charging methods have become possible through the use of integrated circuits and microprocessors. These charging methods can charge batteries more quickly and effectively. For example, US patents U...

AI Technical Summary

Problems solved by technology

Generally speaking, the charging methods of rechargeable batteries are mostly constant current charging, constant voltage charging and the combination of these two charging methods. These methods have the advantages of simple charging circuit and easy charging method, but they also have the advantages of slow charging speed, Low charging efficiency, shortened battery life and fast charging with high current can easily cause the battery temperature to be too high

With the development and progress of semiconductor components, some more complex charging methods have become possible through the use of integrated circuits and microprocessors. These charging methods can charge batteries more quickly and effectively. For example, US patents US4829225 and US5307000 use Pulse charging (including positive charge pulse and reverse discharge pulse) charging method, by measuring the change of battery voltage (or the area change of the battery voltage curve with time) after two pulses before and after to determine whether the charging current should be reduced, the The charging method requires high voltage measurement accuracy, which is difficult to implement; and this method always contains reverse discharge pulses, which affects the overall charging efficiency. This method is not easy to implement when the battery is charged to a high degree.

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