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Mobile phone USB charging line circuit for automatically powering off when fully charged

An automatic power-off and charging line technology, which is applied to battery disconnection circuits, battery circuit devices, electric vehicles, etc., can solve the problems of potential safety hazards, waste of electric energy, easy to forget, etc., to achieve protection from overcharging, saving electricity, The effect of preventing overcharging and heating

Inactive Publication Date: 2018-11-23
合肥斯姆雷品牌管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is easy to forget in the normal charging state, resulting in a waste of electric energy, and there are also potential safety hazards

Method used

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  • Mobile phone USB charging line circuit for automatically powering off when fully charged

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Embodiment Construction

[0011] In order to make it easy to understand the technical means, creative features, goals and effects achieved by the present invention, the present invention will be further explained in conjunction with specific embodiments below.

[0012] Such as figure 1 Shown: a fully charged and automatically powered off mobile phone USB charging cable circuit, input terminal DC1, output terminal DC2, resistor R1, diode D1, capacitor C1, resistor R2, diode D2, transistor Q1, resistor R3, transistor Q2, relay J1, normally open contact J1-1, transistor Q3, resistor R4, capacitor C2, transistor Q4, diode D3 and resistor R5; the anode of input terminal DC1 is connected to one end of resistor R1, the anode of diode D1, one end of resistor R2, and diode D2 The anode, one end of the relay J1 and one end of the normally open contact J1-1, the cathode of the input terminal DC1 are grounded; the other end of the resistor R1 is grounded, the anode of the diode D1, the other end of the resistor R2 an...

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PUM

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Abstract

The invention provides a mobile phone USB charging line circuit for automatically powering off when fully charged. The mobile phone USB charging line circuit is characterized by comprising a USB charging line, wherein one end of the USB charging line is arranged as an input terminal DC1, and the other end of the USB charging line is arranged as an output terminal DC2; the input terminal DC1 and the output terminal DC2 are connected through an anti-overcharge circuit. According to the mobile phone USB charging line circuit for automatically powering off when fully charged, the charging line ofa traditional USB is improved, a battery in the mobile phone cannot be overcharged after being fully charged, therefor the battery in the mobile phone is protected from overcharging, the service lifeof the lithium battery in the mobile phone is prolonged, and electricity is saved. At the same time, the occurrence of overcharging and heating conditions of the mobile phone battery is prevented andthe safety of life and property is ensured.

Description

Technical field [0001] The invention relates to the technical field of mobile phone accessories, in particular to a mobile phone USB charging line circuit that is fully charged and automatically powered off. Background technique [0002] With the continuous development of electronic technology, mobile devices such as smart phones and tablet computers have been widely used in people’s lives. People can install corresponding applications according to their needs to provide people with more convenient services. However, in providing convenient At the same time of service, the battery power of mobile devices such as smart phones and tablet computers is rapidly consumed. Therefore, people need to frequently use charging cables to charge the batteries. [0003] The existing charging line adopts the universal serial bus (English full name: Un i versal Ser i a l Bus, abbreviated as: USB) to meet the requirements of charging different mobile devices. Wherein, the USB cable includes a conne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0031
Inventor 孟凡志
Owner 合肥斯姆雷品牌管理有限公司
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