Dual charging cell power supply apparatus for mobile communication terminal

Abstract

A double charged battery supply device for communication terminals power detection end of 1, the input end of 2 are connected with the input end of 4 and connected with the positive output end of 8, the first signal output end of 1 is connected with the control signal input end of 2, the second signal output end of 1 is connected with the control signal input end of 4, the input end of the first voltage detection input end of 1, output end of 2, the input of 3 are connected with the positive of 6, the second voltage test input end of 1, the output of 4, input of 5 are connected with the positive of 7, the negative of 6, 7 are linked to the earth, the output of the first control signal is connected with the input of 3, the second output end of 1 is linked to the input of 5, the output of 3 with output of 5, the earth ends of 2 and 3 are connected with the negative end of 6, and those of 4 and 5 are connected with the negative of 7.

Description

Technical field: [0001] The invention relates to the field of power supply technology, in particular to a dual rechargeable battery power supply device for a mobile communication terminal. Background technique: [0002] When mobile communication terminal (GSM mobile phone, CDMA mobile phone, PHS etc.) is used, often run into the situation that rechargeable battery has no electricity, and rechargeable battery will be charged in time. But all there are some problems in the single rechargeable battery system of mobile communication terminal at present, as: 1, the optimal charging time of rechargeable battery (lithium battery or nickel-metal hydride battery) is when its electric quantity is used up substantially, and the user feels very Difficult to judge; 2. Since the power consumption of the mobile communication terminal changes at any time, it is difficult to judge when the rechargeable battery in the mobile communication terminal is exhausted. When it is found that the recha...

AI Technical Summary

Problems solved by technology

But all there are some problems in the single rechargeable battery system of mobile communication terminal at present, as: 1, the optimal charging time of rechargeable battery (lithium battery or nickel-metal hydride battery) is when its electric quantity is used up substantially, and the user feels very Difficult to judge; 2. Since the power consumption of the mobile communication terminal changes at any time, it is difficult to judge when the rechargeable battery in the mobile communication terminal is exhausted. When it is found that the rechargeable battery in the mobile communication terminal needs to be charged , may not have the charging conditions (the charger is not brought with you or there is no external power supply for charging) or there is no backup battery, so that the mobile communication terminal cannot continue to be used

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