Method and device for detecting state of overcurrent protector of battery

Abstract

The invention discloses a method and a device for detecting a state of an overcurrent protector of a battery. The method comprises the following steps of: acquiring voltage Uout of a power supply source, and voltage Ubat of the battery connected with the power supply source via the overcurrent protector, and calculating U, wherein U is equal to the absolute value of Uout minus Ubat; when U is more than or equal to UL and less than or equal to UH, and the absolute value of Ibat is less than or equal to Imin, adjusting the voltage of the power supply source to be U'out, wherein UL is the minimum value of a difference value between the voltage of the power supply source and the voltage of the battery, UH is the maximum value of the difference value between the voltage of the power supply source and the voltage of the battery, Ibat is a current value of the battery and Imin is a current detection precision value of equipment for detecting the current of the battery; acquiring the voltage of the battery U'bat after the voltage of the power supply source is adjusted, and calculating U', wherein U' is equal to an absolute value of U'out minus U'bat; and judging the state of the overcurrent protector of the battery according to a relation of U' and UH. By the invention, in case of a smaller difference value between the voltage of the battery and the voltage of the power supply, the state of the overcurrent protector of the battery can be precisely detected by adjusting the voltage of the power supply and comparing the difference value between the voltage at two ends of the overcurrent protector again, and the detection cost can be lowered.

Description

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AI Technical Summary

Benefits of technology

This technology helps quickly identify if an electronic device's power source has trouble or needs maintenance without having it be taken offline for testing purposes. It uses this detected signal from another part called the current sensor that measures how much electricity flows through its terminals when connected to other parts like batteries. By doing these measurements with different voltages at both ends of each component, we are able to predict whether they should stop working properly before any damage occurs due to excessive electrical currents flowing into them during normal use.

Problems solved by technology

This technical problem addressed in this patents relates to improving the reliability and efficiency of detecting excessive current (I) flow through batteries during normal use conditions such as under heavy loads.

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