Battery capacity detection system

Abstract

The invention provides a battery electric quantity detection system. The system comprises a CPU, a voltage comparator, a filtering integration circuit, a battery and a storage medium, wherein a PWM control unit is arranged in the CPU and is used for outputting a PWM signal and inputting the PWM signal to a reverse input end of the voltage comparator through a filter circuit; the voltage of the battery end is input to the positive input end of the voltage comparator through a divider resistor; the output end of the voltage comparator is connected to the CPU, the CPU is connected with the storage medium, the storage medium is used for calling stored data and instructions by the CPU, the CPU acquires a voltage frequency division coefficient and a power supply domain voltage value, the voltageof a battery end is calculated by adjusting the output of the PWM controller according to the corresponding relation between the voltage and the battery capacity, and finally, the value of the electric quantity of the battery is obtained.

Description

technical field [0001] The invention relates to the technical field of human batteries, in particular to a battery power detection system. Background technique [0002] With the continuous development of science and technology, more and more electronic products are inseparable from batteries. Battery technology is widely used in various fields. With the advancement of science and technology, batteries are an indispensable and important component of electronic equipment in daily use. , the health of the battery is directly related to the service life of the electronic device, and due to the insufficient battery power supply, the abnormality of the device often occurs, which is very bad for the user experience and increases the maintenance cost of the customer. It is an important concern for users when purchasing electronic devices. One of the indicators, so fast and accurate acquisition of battery power is an important part of electronic product design. [0003] Adding an in...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of science and technology, more and more electronic products are inseparable from batteries. Battery technology is widely used in various fields. With the advancement of science and technology, batteries are an indispensable and important component of electronic equipment in daily use. , the health of the battery is directly related to the service life of the electronic device, and due to the insufficient battery power supply, the abnormality of the device often occurs, which is very bad for the user experience and increases the maintenance cost of the customer. It is an important concern for users when purchasing electronic devices. One of the indicators, so fast and accurate acquisition of battery power is an important part of electronic product design

[0003] Adding an independent power management integrated circuit to electronic equipment will greatly increase the design cost of the product. Most customers are sensitive to the increase in cost and reduce the competitiveness of the product. Therefore, generally no power management integrated circuit is added to the product.

However, due to the addition of an independent power supply IC, additional peripheral devices are required to work normally, and corresponding developers need to have relevant development experience, which will greatly increase the cost of the product, as well as the difficulty of development, and prolong the product design cycle.

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