Polling detection circuit and method based on battery protection chip and battery protection chip

Abstract

The invention discloses a polling detection circuit and method based on a battery protection chip and the battery protection chip, and the circuit comprises a polling signal generation module which generates a first selection signal and a second selection signal based on a basic clock signal, a plurality of state signals and the priority of a plurality of detection items; the input array selection module is used for selecting one of a plurality of reference signals and one of a plurality of feedback signals based on a first selection signal and outputting the selected signals to the comparator; the comparator is used for comparing the received feedback signal with a reference signal and outputting a corresponding indication signal; and the output sampling module is used for sampling the indication signal according to the second selection signal and updating a plurality of state signals according to a sampling result. According to the method, time and resource allocation of effective polling detection can be carried out as required in a certain long polling period based on the priorities of a plurality of detection items, so that the polling efficiency of key performance parameters is improved on the basis of ensuring the polling timeliness.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a polling detection circuit and method based on a battery protection chip and the battery protection chip. Background technique [0002] With the continuous development and widespread popularity of mobile terminals, batteries, as power supply components for mobile terminals, are becoming more and more important. Therefore, how to take corresponding measures to protect the battery when the mobile terminal fails will also directly affect the stability of the mobile terminal. [0003] The existing battery protection technology generally monitors the electrical parameters of the circuit where the battery is located in real time, such as the current value, voltage value, and instantaneous power of the circuit in real time. However, in this method, it is necessary to traverse and poll each detection item at a fixed interval. In some cases, some polling has no practical significance, ...

AI Technical Summary

Problems solved by technology

However, in this method, it is necessary to traverse and poll each detection item at a fixed interval. In some cases, some polling has no practical significance, resulting in waste of power consumption and waste of polling resources; The power consumption and polling resource waste will be more obvious

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