CN202918028U

CN202918028U - Handset charger capable of automatically stopping charging before completing charging in case of making and receiving calls

Info

Publication number: CN202918028U
Application number: CN 201220644832
Authority: CN
Inventors: 王成李
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-26
Filing date: 2012-11-26
Publication date: 2013-05-01
Anticipated expiration: 2022-11-26

Abstract

The utility model relates to a handset charger capable of automatically stopping charging before completing charging in case of making and receiving calls, comprising a common charger, a control treatment module and an antenna. A power supply outgoing line of the common charger is provided with the control treatment module; a housing is provided with the antenna which is in connection with the control treatment module through a signal connection line; the control treatment module comprises a detection circuit, a control treatment circuit and a switch circuit. The handset charger has a simple structure and provides the control treatment module for a power supply outgoing line of the common charger to realize automatic charging stop in case of making and receiving calls when a handset is being charged, which can avoid impact to an inferior cell, effectively guarantees personal safety, meanwhile protects the cell and prolong the service life of the cell.

Description

Before finishing, a kind of charging connects the charger for mobile phone of the automatic stop function of making a phone call

Technical field

The utility model relates to a kind of charger for mobile phone, connects the charger for mobile phone of the automatic stop function of making a phone call before especially a kind of charging is finished.

Background technology

In daily life, our custom connects in the situation of cell-phone charging makes a phone call, plays games, and has ignored safety.Scientific experiment shows that mobile phone is under the charge condition to be conversed, and can cause that cell-phone charging is in repeatedly on off operating mode, impels voltage and current unstable, causes battery of mobile phone impaired, and especially the impulsive force for some batteries inferior is large, might blast.

Summary of the invention

The purpose of this utility model provides the charger for mobile phone that connects the automatic stop function of making a phone call before a kind of charging is finished, and effectively prevents the generation of personal safety accident, protects simultaneously battery impaired, increases battery life.

The technical scheme that the utility model technical solution problem is taked is: the charger for mobile phone that connects the automatic stop function of making a phone call before a kind of charging is finished, comprise common charger, control processing module and antenna, increase the control processing module on the power supply output line road of described common charger, and be provided with antenna at its shell, be connected on the control processing module by holding wire.

Described control processing module, it comprises testing circuit, control treatment circuit and switching circuit.

Operation principle is as follows: when mobile phone is under the charge condition, connect when making a phone call, testing circuit is by the electromagnetic wave signal of antenna reception around mobile phone, and signal is through filter and amplification, transfer to the control treatment circuit through comparison circuit, the light-emitting diode in the drive circuit is shinny simultaneously; When if signal is continuous high-low level or high level, control treatment circuit output high level is to switching circuit, the switching circuit conducting, and 5V voltage is disconnected, and mobile phone disconnects charging; When if signal is continuous low level, control treatment circuit output low level, the switching circuit cut-off, switching circuit output 5V voltage is realized cell-phone charging.

The beneficial effects of the utility model are: the utility model is simple in structure; increase the control processing module on the power supply output line road of common charger; realize that mobile phone is under charge condition; connect the autoshutdown charge function of making a phone call; avoid the impact to battery inferior, the cause danger situation effectively guarantees personal safety; protect simultaneously battery, increase battery life.

Description of drawings

Fig. 1 is the utility model charger for mobile phone structure chart.

Fig. 2 is the circuit block diagram that the utility model adopts.

Fig. 3 is a kind of physical circuit instance graph of the utility model.

Embodiment

Further specify the utility model below in conjunction with accompanying drawing.

With reference to Fig. 1, before finishing, a kind of charging connects the charger for mobile phone of the automatic stop function of making a phone call, and it comprises common charger 1, control processing module 2 and antenna 3; Increase control processing module 2 on the power supply output line road of described common charger 1, and be provided with antenna 3 at its shell, be connected on the control processing module 2 by holding wire 4.

Fig. 2 is the circuit block diagram that charger for mobile phone control processing module adopts, and it comprises testing circuit 5, control treatment circuit 6 and switching circuit 7; When described testing circuit 5 detects electromagnetic wave signal, signal is shinny by filter and amplification rear drive light-emitting diode, and synchronous signal transfers on the comparator and compares, and the output high-low level is to control treatment circuit 6, information according to input signal, output control treatment circuit 6 is exported corresponding signal to switching circuit 7, if when switching circuit 7 receives high level, 5V voltage is disconnected, cell-phone charging disconnects, if the low level of receiving, the 5V voltage turn-on, mobile phone is in charged state.

Fig. 3 is charger for mobile phone physical circuit instance graph, in the legend, testing circuit 5 enters four series connection high frequency detector diode D1 by antenna one termination, D2, D3, strengthen among the D4 and receive signal, capacitor C 1 one ends and diode D4 negative pole join, the other end and resistance R 1 one ends, capacitor C 2 one ends, the base stage of triode Q1 is joined, the other end of resistance R 1 links to each other with the collector electrode of triode Q1, the other end of capacitor C 1 and triode Q1 emitter be ground connection altogether, one end of the collector electrode of triode Q1 and resistance R 2, one end of capacitor C 3 joins, another termination power 5V of resistance R 2, the positive pole of the other end of capacitor C 3 and light-emitting diode D5, the 2nd pin of comparator LM358 joins; The other end of light-emitting diode D5 and the positive pole of D1 join, the 3rd pin of LM358 meets deflection machine RW1, another termination power 5V of RW1, the 1st pin joins with the P1.0 mouth of the MSP430 of control treatment circuit 6, the base stage of the triode Q2 of P1.1 mouth and switching circuit 7 is joined simultaneously, the collector electrode of one termination Q2 of resistance R 3, other end catcher machine charger out-put supply V+, grounded emitter.

Claims

1. connect the charger for mobile phone of the automatic stop function of making a phone call before a charging is finished, comprise common charger (1), control processing module (2) and antenna (3); It is characterized in that: increase control processing module (2) on the power supply output line road of described common charger (1), and be provided with antenna (3) at its shell, be connected on the control processing module (2) by holding wire (4).

2. charger for mobile phone according to claim 1 is characterized in that: described control processing module (2) comprises testing circuit (5), control treatment circuit (6) and switching circuit (7).