Mobile phone charger with automatic power-off protection function

Abstract

The invention discloses a mobile phone charger with an automatic power-off protection function. The mobile phone charger comprises a rectifying filtering unit, a power supply unit, a first switch unit, a control unit, and a charger output end, wherein the input end of the rectifying filtering unit is connected with the output end of a power supply, and the output end of the rectifying filtering unit is connected with the input end of the power supply unit; a power port is connected with the input end of the rectifying filtering unit; the first switch unit is connected with both the output endof the power supply unit and the charger output end; the control unit is connected with both the first switch unit and the charger output end; a voltage comparison unit is further arranged between thecontrol unit and the charger output end; and a second switch unit is arranged between the voltage comparison unit and the charger output end, and is connected with the control unit. The mobile phonecharger has the characteristics that the voltage of a mobile phone is detected at fixed times for control of the charging time, and a charging circuit is completely disconnected after the mobile phoneis fully charged, so that the mobile phone can be effectively protected; and high convenience in use, high safety and high durability are achieved.

Description

technical field [0001] The invention relates to a mobile phone charger, in particular to a mobile phone charger with an automatic power-off protection function. Background technique [0002] In daily life, mobile phones provide the convenience of communication. As mobile phones become more and more intelligent, mobile phones provide more help to people's clothing, food, housing, transportation, etc., and become an indispensable existence. Therefore, mobile phone chargers have also entered every family. When the current charger is charging the mobile phone, it relies on the power manager of the mobile phone itself to manage the charging. When it is fully charged, it will stop charging. , and continue charging, such repeated charging will cause the battery and the charging line to continue to be heated, which will affect the service life, and even cause the phone to overheat and cause the battery to explode and fire. Contents of the invention [0003] The technical problem ...

AI Technical Summary

Problems solved by technology

Therefore, mobile phone chargers have also entered every family. When the current charger is charging the mobile phone, it relies on the power manager of the mobile phone itself to manage the charging. When it is fully charged, it will stop charging. , and continue charging, such repeated charging will cause the battery and the charging line to continue to be heated, which will affect the service life, and even cause the phone to overheat and cause the battery to explode and fire

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