KR19990016011A - Battery recharging device and method of digital cell phone - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

Battery recharging device and method of digital cell phone.

I. The technical problem to be solved by the invention

Battery recharging is performed using the solar cell attached to the terminal.

All. Summary of Solution of the Invention

The method of recharging a battery of a digital cell phone includes a first process of entering a paging mode at power-on and continuously consuming a battery, a second process of generating electrical energy by using a light quantity irradiated by a solar cell, and a battery charging condition. A third process of operating an optical sensor when a corresponding amount of light is irradiated, a fourth process of charging a voltage and a current output from the solar cell to the battery when the optical sensor is operated, and the first process of turning off a power Except for the fifth process to sequentially perform the second process, the third process, the fourth process.

la. Important uses of the invention

The battery life of the terminal can be extended.

Description

Battery recharging device and method of digital cell phone

The present invention relates to an apparatus and method for charging a battery of a digital cell phone, and more particularly, to an apparatus and method for battery recharging using sunlight.

In the digital cellular system, the battery of the terminal is charged through a terminal charger or a vehicle charger.

Hereinafter, a configuration of a conventional cellular phone will be described with reference to FIG. 1.

The controller 10 generally controls the operation of the cellular phone according to the program. Flash memory 20 stores program and service data for overall control of the cellular phone. RAM 30 temporarily stores data generated during program execution. The EEPROM40 stores telephone numbers, electronic serial numbers (ESNs), system parameters, and so on.

The RF transceiver 50 is connected to the antenna AT1 to transmit and receive an RF signal. The analog signal processor 60 down-converts and digitizes the received RF signal to a baseband frequency domain, or up-converts the digital data to a transmission RF signal.

The digital modulation and demodulation section 70 modulates or demodulates the CDMA signal. The PCM codec unit 80 is responsible for various processes in accordance with the digital transmission of the voice signal, such as the digitization of the voice signal to be transmitted and the restoration of the voice signal through the analogization of the received signal.

The power supply unit 90 supplies a predetermined level of power to each device of the cellular phone so that the devices can operate smoothly. The battery 100 preserves the voltage and current charged through a separate charger and provides the power supply unit 90 when the cellular phone is powered on.

In general, a power save method for prolonging the use time without recharging in a digital cellular system (CDMA System; Code Division Multiple Access System) is performed in a battery or a paging mode of a terminal. A method that reduces power consumption through software algorithm improvement or hardware circuit improvement is used.

In other words, power saving through the above-mentioned battery performance improvement, software algorithm, and hardware circuit improvement is an improvement obtained by minimizing the usage per unit time within a limited resource, that is, a certain amount of battery capacity. Before the battery of the application is developed, it contains limitations.

Accordingly, an object of the present invention is to provide a method for performing battery recharge using a solar cell in a cellular phone.

Another object of the present invention is to provide a method for extending the standby time of a cellular phone.

A method of recharging a battery of a digital cell phone to achieve the above objects includes a first process of continuously entering a paging mode when the power is turned on and continuously consuming a battery, a second process of generating solar energy by the solar cell according to the amount of light irradiated; A third process of operating an optical sensor when an amount of light meeting a battery charging condition is irradiated, a fourth process of charging a voltage and a current output from the solar cell to the battery when the optical sensor is operated, and powering off When the second process, the third process, and the fourth process except for the first process, characterized in that consisting of a fifth process sequentially performed.

Another object of the present invention is to provide an apparatus for recharging a battery using a solar cell in a cellular phone.

A digital cell phone for achieving the above object is a solar cell attached to the outside of the digital cell phone to generate electrical energy using sunlight, and outputs from the solar cell when a certain amount of light is detected by detecting the sunlight. It further comprises an optical sensor for switching the voltage and current to the battery built in the digital cell phone.

1 is a block diagram of a cellular phone according to the prior art.

2 is a block diagram of a cellular phone according to the present invention;

3 is an operation flowchart for performing a battery recharge according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a cellular phone with a solar cell according to an embodiment of the present invention.

The controller 10 generally controls the operation of the cellular phone according to the program. Flash memory 20 stores program and service data for overall control of the cellular phone. RAM 30 temporarily stores data generated during program execution. The EEPROM40 stores telephone numbers, electronic serial numbers (ESNs), system parameters, and so on.

The RF transceiver 50 is connected to the antenna AT1 to transmit and receive an RF signal. The analog signal processor 60 down-converts and digitizes the received RF signal to a baseband frequency domain, or up-converts the digital data to a transmission RF signal.

The digital modulation and demodulation section 70 modulates or demodulates the CDMA signal. The PCM codec unit 80 is responsible for various processes in accordance with the digital transmission of the voice signal, such as the digitization of the voice signal to be transmitted and the restoration of the voice signal through the analogization of the received signal.

The power supply unit 90 supplies a predetermined level of power to each device of the cellular phone so that the devices can operate smoothly. The battery 100 preserves the voltage and current charged through a separate charger and provides the power supply unit 90 when the cellular phone is powered on.

The solar cell 110 converts the electrical energy into electrical energy using the amount of light to be radiated and outputs the electrical energy. The solar cell is also attached to the front or back of the cell phone or the back of the battery. The optical sensor 120 is turned on when a predetermined amount of light is irradiated to perform a switching function of charging the battery 100 with the voltage and current from the solar cell 110.

Hereinafter, the approximate signal flow according to the above configuration will be described.

The voice signal of the 800 MHz band received from the RF transceiver 50 and the message signal transmitted from the base station to the terminal are down-converted by the analog signal processor 60 and lowered to the 1,2288 MHz band.

The down-converted signal from the analog signal processor 60 to the digital signal is input to the digital modulation and demodulation unit 70 and separated into a voice signal and a base station message. The voice signal is input to the PCM codec 80, and the base station message signal is passed to the controller 10. Is processed.

On the other hand, the voice signal input from the microphone (MIC) is framed together with the message to be transmitted from the digital modulation / demodulation unit 70 to the base station via the PCM codec 80, up-converted through the analog signal processor 60, and then the RF transceiver 50 Propagated through the air.

Hereinafter, a charging process using the solar cell 110 of the cellular phone according to the present invention will be described in detail with reference to FIG. 3. Hereinafter, the terminal means the cellular phone.

As shown in FIG. 3, the operation mode according to the present invention is divided into two types.

First, there is a case where the user turns on the terminal and the terminal enters the standby state, and when the user does not turn on the terminal.

When the user turns on the terminal, the terminal enters a paging mode and starts to consume 100 batteries. The above is the operation process from step 311 to step 315.

In addition, the optical sensor 120 attached to the terminal in the paging mode continuously checks the external environmental situation (light quantity) to check whether the amount of light that can charge the battery 100. At this time, if the amount of light that can charge the battery 100, the optical sensor 120 is operated, and if the amount of light that can charge the battery 100, the optical sensor 120 continues to check the amount of light.

Herein, the operation of the optical sensor 120 means that the optical sensor 120 is turned on by recognizing a certain amount of light (defined by the circuit designer), and according to the present invention, a voltage such that the solar cell 110 can charge the battery 100 and It is designed to turn on when the amount of light that can output the current is recognized. In this case, the threshold for charging the battery 100 may be, for example, 8.2V and 900mA, based on a commercially available terminal.

That is, in terms of recognizing light, the solar cell 110 or the optical sensor 120 is the same, but the solar cell 110 recognizes light to make electrical energy, whereas the optical sensor 120 is turned on when the light is recognized to some extent, and thus the solar cell. It is used as a concept of switching to transfer the voltage and current output from the 110 to the battery 100.

In a larger sense, it is also a concept of a comparator when the output voltage of the solar cell 110 is turned on when a certain level or more is turned on.

The above is the operation process from step 317 to step 319.

Eventually, the optical sensor 120 is operated so that the terminal enters the recharging mode. That is, the output voltage and current of the solar cell 110 are input to the battery 100 through the optical sensor 120 to recharge the battery 100 of the terminal. The above is the operation process in step 321.

Operation from step 311 to step 321 is an operation process in the power-on state of the terminal, the operation process in the power off state is described as follows.

First, since the terminal is currently in a state of no battery consumption and power is turned off, the controller 10 of the terminal may not be involved in charging the battery or provide a separate voltage related to the charging. That is, the battery 100 must be recharged without additional battery consumption.

Therefore, the optical sensor 120 attached to the terminal continuously checks the external environment (light quantity) to check whether the condition for charging the battery 100 is satisfied.

At this time, when the battery 100 charging condition is satisfied, the optical sensor 120 operates. Here, the operation principle of the optical sensor 120 is activated when a certain amount of light is irradiated without supplying a constant current or voltage.

Therefore, if the amount of light that the optical sensor 120 operates matches the required amount of light of the solar cell 110 capable of outputting a voltage and a current meeting the battery 100 charging condition, the battery 100 charge threshold is measured without additional power consumption. Can be performed. The above is the operation process from step 323 to step 325.

Eventually, the optical sensor 120 is operated so that the terminal enters the recharging mode. That is, the output voltage and current of the solar cell 110 are input to the battery 100 through the optical sensor 120 to recharge the battery 100 of the terminal. The above is the operation process in step 327.

As described above, the present invention is not a battery power save using a method of reducing the consumption of a battery, which is determined by a certain amount, but is an active power save method that recharges the battery when a specific condition is satisfied. Therefore, it can provide more usage time than the standby time or battery use of the existing terminal, and the user can carry it in the hand while recharging by sunlight without any additional action.

Claims (3)

In a digital cell phone, A solar cell attached to the outside of the digital cell phone to make electrical energy using sunlight; Recharging the battery of the digital cell phone further comprises an optical sensor for detecting the sunlight and for switching the voltage and current output from the solar cell to a battery built in the digital cell phone when a predetermined amount of light is inspected Device. A method for recharging a battery of a digital cell phone having a solar cell and an optical sensor, A first process of continuously entering a paging mode when the power is turned on and continuously consuming a battery; A second process of making electrical energy by using the amount of light irradiated by the solar cell; A third process of operating the optical sensor when an amount of light meeting a battery charging condition is irradiated; A fourth process of charging the battery with a voltage and a current output from the solar cell when the optical sensor is operated; And a fifth process of sequentially performing the second process, the third process, and the fourth process, except for the first process, when the power is turned off. The method of claim 2, The operation of the optical sensor, Recharging the voltage and current output from the solar cell to the battery.