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 affecting users' use, changes in transistor conduction resistance, etc.
Active Publication Date: 2020-12-29
SHENZHEN INJOINIC TECH
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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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[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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Embodiments of the present application provide a current detection chip, a battery, and electronic equipment. The current detection chip is used for current detection during charging and discharging of the battery. The current detection chip includes: a current compensation circuit for generating a first compensation current. A compensation current changes linearly with the change of the power supply voltage from the battery; the comparison circuit includes a first input terminal and a second input terminal; a selection circuit is used to receive the first compensation current and select the first compensation current to be input to the comparison The first input terminal of the circuit or the second input terminal of the comparison circuit; the comparison circuit is used to compare the current of the first input terminal of the comparison circuit and the current of the second input terminal of the comparison circuit, and output an indication signal according to the comparison result, and the indication signal is used for Indicates whether the charging and discharging process of the battery is over-current. The present application provides a current detection chip, a battery and electronic equipment for improving the accuracy of current detection during the charging and discharging process of a battery.
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...
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IPC IPC(8): G01R31/385G01R19/165
CPCG01R31/382G01R19/16542
Inventor 唐晓
Owner SHENZHEN INJOINIC TECH