Intelligent charging circuit for mobile power supply

Abstract

The invention discloses an intelligent charging circuit for a mobile power supply. The intelligent charging circuit comprises a transformer T, a diode D1, a diode D2, a one-way silicon controlled rectifier VS1, a light emitting diode (LED), a relay J and a capacitor C1, wherein the two ends of a coil L1 of the transformer T are connected with the two ends of a 220V alternating current; one end of a coil L2 of the transformer T is connected with the positive electrode of the diode D1 and the negative electrode of the diode D2 separately; the negative electrode of the diode D1 is connected with the grounding capacitor C1, a coil of the grounding relay J and the negative electrode of a grounding diode D4 separately; the negative electrode of the diode D2 is connected with the negative electrode of a diode D3, a resistor R1 and the A pole of the one-way silicon controlled rectifier VS1 separately; the K pole of the one-way silicon controlled rectifier VS is connected with a resistor R5 and a contact J-1 of the relay J; and the other end of the contact J-1 of the relay J is connected with the positive electrode of a storage battery E. The intelligent charging circuit for the mobile power supply adopts the silicon controlled rectifier as the main control element, and is simple in circuit structure, low in cost, small in size, low in heating, and quite suitable for popularization and use.

Description

technical field [0001] The invention relates to a mobile power supply, in particular to an intelligent charging circuit for a mobile power supply. Background technique [0002] With the continuous improvement of people's living standards, electronic devices have become an indispensable part of life, especially mobile devices such as mobile phones and tablet computers. However, such electronic devices generally have the disadvantage of poor battery life. This problem has been solved well, but the mobile power banks that appear on the market generally have the defects of complex structure, single function, and low safety performance, and news that the mobile power bank explodes during charging is often reported. [0003] Many existing mobile power supplies use triodes or time-base chips as charging self-stop controllers, but the use of a large number of triodes will increase the heat generated by the charger, and heat sinks need to be added, resulting in a larger volume of the...

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of people's living standards, electronic devices have become an indispensable part of life, especially mobile devices such as mobile phones and tablet computers. However, such electronic devices generally have the disadvantage of poor battery life. This problem has been solved well, but the mobile power banks appearing on the market generally have the defects of complex structure, single function, and low safety performance, and there are often news that the mobile power bank explodes during the charging process.

[0003] Many existing mobile power supplies use triodes or time-base chips as charging self-stop controllers, but the use of a large number of triodes will increase the heat generated by the charger, and heat sinks need to be added, resulting in a larger volume of the mobile power supply. The time base chip will lead to weak anti-interference ability, which is very unfavorable for the miniaturization of mobile power. How to reduce the size and ensure charging safety is the direction of research in the industry

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