Quick charge method and device for secondary battery

Abstract

The invention provides a quick charge method and device for a secondary battery. The method comprises the following steps: S1, current or voltage pulse is applied to a charge battery for a certain time, the index parameters of the battery are measured in real time, if each index parameter is less than the preset value, current pulse or voltage pulse is continuously applied, and if any one of the index parameters is greater than or equal to the preset value, charging is stopped for a certain time; S2, 0.001-1C of current is applied to the charge battery, if each of the index parameters is less than the preset value, the step S1 is repeated through using current or voltage pulse smaller than that of the step S1, and if any one of the index parameters is greater than or equal to the preset value, the charging process is ended. The invention further provides a device corresponding to the method, which comprises an applying module and an adjustment module, and through the adoption of the charge method provided by the invention, the charge battery can be protected more efficiently, so that the charge efficiency of the charge battery is improved.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to a fast charging method and device for a secondary battery. Background technique [0002] Fast charging methods and devices for various secondary batteries are a relatively mature field. Generally speaking, the fast charging methods of secondary 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 disadvantage of slow charging speed. , low charging efficiency, reduced battery life and high current fast charging can easily cause the battery temperature to be too high. [0003] With the development and progress of semiconductor components and parts, by using integrated circuits and microprocessors, some more complicated charging methods have become possible, and these charging methods can charge batte...

AI Technical Summary

Problems solved by technology

[0004] However, the above charging method requires high voltage measurement accuracy and 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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