Charging system and method for charging communication terminal
A technology of a communication terminal and a charging method, which is applied to battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of increased battery charging time, current consumption, and no consideration of the current consumption of mobile communication terminals.
Inactive Publication Date: 2004-07-07
LG ELECTRONICS INC
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Problems solved by technology
[0015] However, the mobile communication terminal consumes the current supplied from the charger during the operation of the LCD screen display and the backlight of the keypad and during the operation of the mobile communication terminal by the user.
That is, the charger performs battery charging by only outputting a preset current value corresponding to the battery capacity without considering the amount of current consumed by the mobile communication terminal
Therefore, if the current consumption of the mobile communication terminal increases, the amount of charging current to the battery decreases, causing a problem that the time to complete battery charging increases.
Method used
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[0026] By way of example, the invention is discussed below with reference to a mobile communication terminal. However, the present invention can also be utilized with other types of communication devices that require charging.
[0027] A charging system and method for charging a communication terminal according to an embodiment of the present invention supplies a battery with a constant current by supplying the battery with a compensation current equal to a current input to the communication terminal regardless of whether the communication terminal is in operation. The invention will now be described with reference to the accompanying drawings.
[0028] figure 2 It is a schematic block diagram of a charging system for a mobile communication terminal according to an embodiment of the present invention. figure 2 The charging system 1 includes a battery 230 , a mobile communication terminal 200 connected to the battery 230 , and a charger 100 .
[0029] The charger 100 include...
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A charging system and method for charging a communication terminal are provided which supply to a battery a compensation current equivalent to an amount of current input to a communication terminal. The charging method includes detecting a value of current flowing to a communication terminal when a battery attached to the communication terminal is being charged by a charging device, outputting to the charging device a data signal corresponding to the detected current value, and adding a compensation current to the current input to the battery based on the detected current value. Regardless of an operation of the communication terminal, a constant current is supplied to the battery being charged, and thus, time taken for completing charging of the battery can be reduced.
Description
technical field [0001] The present invention relates to a charging system and method for charging a communication terminal, such as a mobile communication terminal. Background technique [0002] Generally, a battery for a mobile communication terminal includes three or four terminals connected to a charger. If the battery includes three terminals, they are typically a (+) terminal, a (-) terminal, and an ID terminal. If the battery includes four terminals, a temperature check terminal for checking battery temperature changes is also included. [0003] The ID terminal checks the capacity of the rechargeable battery. The battery capacity can be determined from the resistance connected to the ID terminal. Resistor values are generally determined by the manufacturer. Because the resistor is generally located between the ID terminal and the (-) terminal of the battery, the charger can determine the battery capacity by checking the resistance located between the two terminal...
Claims
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IPC IPC(8): H02J7/04H02J7/00
CPCH02J7/0068H02J7/00
Inventor 金相友
Owner LG ELECTRONICS INC