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Current detection chip, battery and electronic equipment

A current detection and chip technology, applied in the direction of measuring current/voltage, measuring electricity, measuring devices, etc., can solve problems such as affecting users' use and changing on-resistance of transistors

Active Publication Date: 2020-11-13
SHENZHEN INJOINIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the battery fast charging technology, the voltage of the battery changes rapidly, which leads to the change of the on-resistance of the transistor in the battery protection circuit, which causes the current detection of the battery during the charging and discharging process, which affects the user's use

Method used

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  • Current detection chip, battery and electronic equipment
  • Current detection chip, battery and electronic equipment
  • Current detection chip, battery and electronic equipment

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. The embodiments listed in this application can be properly combined with each other without mutual conflict.

[0030] With the development of science and technology, the functions of electronic devices (such as smart phones, wearable devices, tablet computers, etc.) have become more and more powerful, and users can use electronic devices for office and entertainment, so that electronic devices have become a part of people's daily life. an integral part of life. However, the battery life of electronic devices is limited, requiring users to charge the electronic devices continuously. In order to ensure that users can use electronic devices normally, fast charging has become a mainstrea...

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Abstract

The embodiment of the invention provides a current detection chip, a battery and electronic equipment. The current detection chip is used for carrying out current detection on the battery in the charging and discharging process, the current detection chip comprises a current compensation circuit used for generating a first compensation current, the first compensation current linearly changes alongwith the change of a power supply voltage from the battery, the comparison circuit comprises a first input end and a second input end, the selection circuit is used for receiving the first compensation current and selecting the first compensation current to be inputted to a first input end of the comparison circuit or a second input end of the comparison circuit, and the comparison circuit is used for comparing the current of the first input end of the comparison circuit with the current of the second input end of the comparison circuit and outputting an indication signal according to a comparison result, and the indication signal is used for indicating whether the charging-discharging process of the battery is over-current. The current detection chip, the battery and the electronic equipment provided by the invention are advantaged in that current detection accuracy of the battery in the charging and discharging process is improved.

Description

technical field [0001] The present application relates to the technical field of fast charging, in particular to a current detection chip, a battery and electronic equipment. Background technique [0002] With the advent of the intelligent era, the continuous improvement of software and hardware has greatly increased the power consumption of electronic devices such as mobile phones, thus, fast charging technology came into being. In the battery fast charging technology, the voltage of the battery changes rapidly, which causes the on-resistance of the transistor in the battery protection circuit to change, thereby causing the current detection of the battery during charging and discharging, which affects the user's use. Contents of the invention [0003] The present application provides a current detection chip, a battery and an electronic device for improving the accuracy of current detection in the charging and discharging process of a battery. [0004] In the first aspe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/385G01R19/165
CPCG01R31/382G01R19/16542
Inventor 唐晓
Owner SHENZHEN INJOINIC TECH