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Vehicle-mounted APO (Automatic Power Off) phone charging circuit

A mobile phone charging and vehicle charging technology, applied in battery circuit devices, circuit devices, current collectors, etc., can solve problems such as large fires and other hidden dangers, achieve enhanced use safety, avoid excessive damage, and achieve power-off protection Effect

Inactive Publication Date: 2016-03-30
WUHU RUIXIN ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a vehicle-mounted automatic power-off mobile phone charging circuit to solve the problem in the prior art that the charger is not unplugged for a long time and there are great fire hazards and other hidden dangers

Method used

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  • Vehicle-mounted APO (Automatic Power Off) phone charging circuit
  • Vehicle-mounted APO (Automatic Power Off) phone charging circuit

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Embodiment

[0020] A mobile phone charging circuit with automatic power-off in the vehicle, such as figure 1 , including electrolytic capacitor C1, resistor R1, chip MC34063, capacitor C2, resistor R2, resistor R3, resistor R4, triode Q1, voltage regulator tube ZD1, inductor L1, electrolytic capacitor C3; pin 6 of the chip MC34063 is connected to the vehicle through the relay KA1 The positive terminal of the charging circuit, the relay KA1 is connected to the positive terminal of the electrolytic capacitor C1, the negative terminal of the electrolytic capacitor C1 is connected to the negative terminal of the vehicle charging circuit, the pin 6 of the chip MC34063 is connected to the pin 8 of the chip MC34063 through the resistor R1, the chip Pin 8 of MC34063 is respectively connected to pin 7 of chip MC34063, pin 1 of chip MC34063, and the collector of transistor Q1. The base of transistor Q1 is connected to pin 2 of chip MC34063. The base of transistor Q1 is also connected through resisto...

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Abstract

The invention provides a vehicle-mounted APO (Automatic Power Off) phone charging circuit, comprising an electrolytic capacitor C1, a resistor R1, a chip MC34063, a capacitor C2, a resistor R2, a resistor R3, a a resistor R4, a triode Q1, a stabilivolt ZD1, an inductor L1 and an electrolytic capacitor C3, wherein a pin 6 of the chip MC34063 is connected with the positive access end of a vehicle-mounted charging circuit through a relay KA1. The vehicle-mounted APO phone charging circuit has the function of automatically disconnecting the vehicle-mounted charging circuit from a power supply. The APO phone charging circuit has the advantages of realizing power-off protection of a charger, enhancing the use safety of the charger and avoiding such potential safety hazards of the charger as earlier damage or spontaneous combustion due to long-term working; after powering off, since the charger does not work continuously, energy can be saved to some degree.

Description

technical field [0001] The invention relates to a charging circuit for a vehicle-mounted automatic power-off mobile phone. Background technique [0002] The mobile phone charger converts high voltage into low voltage through a transformer. If it is not unplugged for a long time, it will always work. The charger still consumes power if it is not unplugged, and the largest power consumption of the mobile phone charger is 308 milliwatts. The charger is not unplugged from the power socket. Although the charger is not connected to the mobile phone, the circuit board inside the charger is powered on and still working, which will still consume power. [0003] After the charger works for a long time, the charger will heat up, and the insulation layer of the coil may be melted, causing a short circuit. The charger is very small, there is no space and no heat dissipation, whether it is overheated or short-circuited, it is easy to cause combustion. Generally, a mobile phone can be f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 朱成华崔俊国
Owner WUHU RUIXIN ELECTRONICS TECH CO LTD
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