WO2004102767A1 - A charger for the various batterys of the cellular phones and the control method of the charger - Google Patents

A charger for the various batterys of the cellular phones and the control method of the charger Download PDF

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Publication number
WO2004102767A1
WO2004102767A1 PCT/KR2004/001089 KR2004001089W WO2004102767A1 WO 2004102767 A1 WO2004102767 A1 WO 2004102767A1 KR 2004001089 W KR2004001089 W KR 2004001089W WO 2004102767 A1 WO2004102767 A1 WO 2004102767A1
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WIPO (PCT)
Prior art keywords
terminal
voltage
battery
charging
microcomputer
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Application number
PCT/KR2004/001089
Other languages
French (fr)
Inventor
Byong-Seop Yoo
Original Assignee
Byong-Seop Yoo
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Application filed by Byong-Seop Yoo filed Critical Byong-Seop Yoo
Publication of WO2004102767A1 publication Critical patent/WO2004102767A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • H02J7/0049—Detection of fully charged condition
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention relates to a charging device for various types of mobile phones and a method of controlling the same. The charging device and method of the present invention can automatically charge all types o batteries. A plurality of contact terminals are provided on the housing of the charging device, a mobile phone is mounted on the charging device, the voltages of the contact terminals are automatically checked by a microcomputer, and a current is applied to contact terminals, which correspond to positive input terminals, through a charging circuit. Accordingly, the charging device can be used regardless of the types of mobile phones, so that cost reduction can be achieved.

Description

DESCRIPTION A CHARGER FOR THE VARIOUS BATTERYS OF THE CELLULAR PHONES AND THE CONTROL METHOD OF THE CHARGER
Technical Field
The present invention relates to a charging device for various types of mobile phones and a method of controlling the same.
Background Art
Generally, a battery for a mobile phone includes cells, a protection circuit, and battery terminals. The cells and the protection circuit are mounted in the housing of the battery, and the battery terminals are formed to be protruded to an outside. In this case, the battery terminals are electrically connected to the protection circuit by lead wires, and include positive and negative power input terminals, an S terminal adapted to" identify the type or voltage capacity of the battery, and a T terminal connected to a thermistor to prevent overheating attributable to charge. The locations, polarities or number of contacts to which power is applied are different according to the manufacturers or models of mobile phones . In contrast, the charging terminals of a charging device are formed on the upper portion of the housing of the charging device to be protruded from a terminal socket with the number of the charging terminals being identical to that of the battery terminals, and are electrically connected to a charging circuit placed in the housing of the charging device by lead wires. In this case, since the locations, spaces and sizes of the charging terminals are fixed to locations, spaces and sizes that allow the charging terminals to ,be accurately connected to the battery terminals when the battery and the charging device are engaged with each other, available charging devices are limited depending on the type of the mobile phone (model of battery) .
That is, in the case of replacing a used mobile phone, a problem arises in that a separate charging device for a new mobile phone must be purchased, so that the charging device for the used mobile phone becomes waste that is not used any longer, which causes environmental pollution and waste of resources.
Description of Drawings
FIG. 1 is a perspective view of a battery and a charging device for a mobile phone to illustrate an embodiment of a charging device for various types of mobile phones according to the present invention; FIG. 2 is a perspective view schematically showing that permanent magnets of FIG. 1 are attached to each other by magnetic attraction;
FIG. 3 is a view schematically showing a microcomputer that switches the battery terminals and charging terminals by internal ports;
FIG. 4 is a cross section schematically showing the structures of the battery terminals and the contact terminals of the charging device according to the present invention; and
FIG. 5 is a flowchart schematically showing a process of charging the battery through switching operations in the microcomputer of the charging device for various types of mobile phones according to the present invention.
Disclosure
Technical Problem
The present invention is devised to solve the above problems, and an object of the present invention is to provide a charging device for various types of mobile phones, which can automatically charge all types of batteries in such a way that a plurality of minute contact terminals having elastic members are provided on upper inner sides of the housing of the charging device, the voltages of the contact terminals are automatically checked by a microcomputer when a battery is mounted on the charging device and battery terminals provided on the rear side of the battery are in contact with the contact terminals, and a current is applied to positive contact terminals through a charging circuit.
Another object of the present invention is to allow easy mounting of the mobile phone on the charging device in such a way that a magnet having N and S poles is attached to a rear cover of the battery, and a magnet having S and N poles is provided on an upper side of the housing at locations that allow the contact terminals of the charging device and the charging terminals of the battery to correspond with each other, so that the magnet of the battery and the magnet of the housing are arranged to be in contact with each other by magnetic attraction between opposite poles.
Technical Solution
Accordingly, in order to accomplish the above object, the present invention provides a battery charging device for various types of mobile phones, including four or more contact terminals provided on an upper portion of a housing to correspond to battery terminals of a battery of a mobile phone, switching ports A included in the housing to switch the plurality of contact terminals and check voltages of the contact terminals, an Analog Digital Converter (ADC) input unit converting an analog voltage signal, checked in each contact terminal, into a digital voltage signal, a microcomputer comparing the digital voltage signal, output from the ADC input unit, with a reference value and controlling ports B by issuing a certain control signal, and the switching ports B switching charging terminals of the charging device in response to the control signal issued by the microcomputer and supplying a current to the corresponding contact terminals .
The battery may include a magnet having N and S poles attached on a rear cover thereof, and the housing may include a magnet having S and N poles provided on an upper portion thereof to allow the contact terminals of the charging device and the battery terminals of the battery to correspond to each other, so that the magnet of the battery and the magnet of the housing may come in contact with each other by magnetic attraction between opposite poles .
In order to accomplish the above object, the present invention provides A method of controlling a charging device for various types of mobile phones in which a control process of a microcomputer is performed in such a way that: when battery terminals of a mobile phone are connected to contact terminals for charging the battery, the microcomputer automatically detects the connection and generates an operation signal; when the battery of the mobile phone is discharged, voltage measurement is impossible because the battery terminal is locked, so that an instant current impulse of 1 mA is applied to a SBl of ports B for 10 to 15 minutes to release the lock; when the lock is released, the microcomputer turns on a SA1, checks a terminal voltage VI of a contact terminal 1, compares the terminal voltage VI with a reference voltage Vr, and, if the terminal voltage VI is higher than the reference voltage Vr, the microcomputer determines that the contact terminal 1 is a positive input terminal, and turns on the SBl through the ports B; when the SBl is turned on, a current fed through the charging circuit is supplied to the contact terminal 1 and a corresponding battery terminal, so that the battery is charged, and in this case, the microcomputer compares again the terminal voltage VI with a buffer voltage Vc; if the terminal voltage VI is lower than the buffer voltage Vc, the microcomputer displays an indication of charging being performed, and simultaneously returns and continues to perform the charging operation, while, if the terminal voltage VI is equal to or higher than the buffer voltage Vc, the microcomputer displays an indication of charging having been completed, and the charging process is completed; if the terminal voltage VI of the contact terminal 1 is lower than the reference voltage Vr, the SAl is turned off, and an instant current impulse of 1 mA is applied to the SB2 of the ports B for 10 to 15 ms; when the lock is released, the microcomputer turns on the SA2, checks a terminal voltage V2 of a contact terminal 2, and compares the terminal voltage V2 with the reference voltage Vr, and if the terminal voltage V2 is higher than the reference voltage Vr, the microcomputer determines that the contact terminal 2 is a positive input terminal and turns on the SB2 through the ports B; when the SB2 is turned on, the current fed through the charging circuit is supplied to the contact terminal 2 and a corresponding battery terminal, so that the battery is charged, and in this case, the microcomputer compares again the terminal voltage V2 with the buffer voltage Vc; if the terminal voltage V2 is lower than the buffer voltage Vc, the microcomputer displays an indication of charging being performed, and simultaneously returns and continues to perform the charging process, while, if the terminal voltage V2 is equal to or higher than the buffer voltage Vc, the microcomputer displays an indication of charging having been completed and the charging process is completed; if a terminal voltage Vn-1 of a contact terminal n is lower than the reference voltage Vr, the SAn-1 is turned off and an instant current impulse of 1 mA is applied to the SBn of the ports B for 10 to 15' s; when the lock is released, the microcomputer turns on the San, checks a terminal voltage Vn of a contact terminal n, and compares the terminal voltage Vn with the reference voltage Vr, and if the terminal voltage Vn is higher than the reference , voltage Vr, the microcomputer determines that the contact terminal n is a positive input terminal and turns on the SBn through the ports B; when the SBn is turned on, the current fed through the charging circuit is supplied to the contact terminal n and a corresponding battery terminal, so that the battery is charged, and in this case, the microcomputer compares again the terminal voltage Vn with the buffer voltage Vc; and if the terminal voltage Vn is lower than the buffer voltage Vc, the microcomputer displays an indication of charging being performed and simultaneously returns and continues to perform the charging process, while, if the terminal voltage V2 is equal to or higher than the buffer voltage Vc, the microcomputer displays an indication of charging having been completed and the charging process is completed.
Advantageous Effects
A charging device for various types of mobile phones and a method of controlling the same according to the present invention can automatically charge all types of batteries in such a way that a plurality of minute contact terminals having elastic members are provided on an upper inner side of the housing of the charging device, a mobile phone is mounted on the charging device, the voltages of the contact terminals are automatically checked by a microcomputer when battery terminals provided on the rear side of the battery come in contact with the contact terminals, and a current is applied to contact terminals, which correspond to positive input terminals, through a charging circuit. Accordingly, the charging device can be not only used without separately purchasing a new charging device even when a user purchases a new mobile phone, but also a cost-saving effect is considerable because various types of mobile phones used in a home can be charged by a single charging device, and the waste of costs occurring when a used mobile phone is wasted to replace the used mobile phone can be prevented.
Furthermore, a magnet having N and S poles is attached on the rear cover of the battery, and a magnet having S and N poles is provided on the upper portion of the housing at locations that allow the contact terminals of the charging device and the battery terminals of the battery to correspond to each other, so that the magnet of the battery and the magnet of the housing are brought into contact with each other by magnetic attraction between opposite poles, thus facilitating the attachment of the mobile phone to the charging device and preventing the case where the mobile phone is not charged due to the incorrect attachment thereof.
Best Mode
FIG. 1 is a perspective view of a battery and a charging device for a mobile phone to illustrate an embodiment of a charging device for various types of mobile phones according to the present invention. FIG. 2 is a perspective view schematically showing that permanent magnets of FIG. 1 are attached to each other by magnetic attraction. FIG. 3 is a view schematically showing a microcomputer that switches the battery terminals and charging terminals by internal ports. FIG. 4 is a cross section schematically showing the structures of the battery terminals and contact terminals of the charging device according to the present invention. FIG. 5 is a flowchart showing a process of charging the battery through switching operations in the microcomputer according to the present invention.
As shown in FIG. 1, the charging device for various types of mobile phones of the present invention, which accommodates a mobile phone on a charging holder supplied with power and charges the battery of the mobile phone, includes a battery 10 of the mobile phone that has a plurality of battery terminals 14 for charging the battery 10 on a rear cover 11, and a charging device 20 that includes four or more contact terminals 24 on the upper portion 21 of a housing to correspond to those of the battery terminals 14, and charges the battery 10 in such a way that the contact terminals 24 for charging the battery are automatically checked by the microcomputer 100 and, then, a current is supplied to the contact terminals 24 for charging the battery through a charging circuit (not shown) .
Each of the contact terminals 24 is a kind of terminal for checking a voltage, which is distinguished from charging terminals used in a conventional charging device 20. The microcomputer 100 compares the set voltages of the battery terminals 14 in contact with the contact terminals 24, checks the battery terminals 14 and the contact terminals 24 that correspond to positive input terminals, and switches charging terminals 140 corresponding to the contact terminals 24, so that a current for charging the battery is supplied to the checked battery terminals 14.
Furthermore, to apply the charging device to the battery of a common mobile phone having four battery terminals, the width of each contact terminal 24 is smaller than that of each battery terminal 14, the number of the contact terminals 24 is larger than that of the battery terminals 14, and the contact terminals 24 are elastically protruded upward by elastic members included in the contact terminals 24.
In an one embodiment of the present invention, the width of each contact terminal 24 is formed to be 0.5 times that of each battery terminal or less, the number of the contact terminals 24 is equal to or larger than ten to allow the contact terminals 24 to be spaced at minute regular intervals, and the contact terminals 24 are elastically protruded upward by the elastic members 30, such as springs, included therein to be used regardless of the heights of the battery terminals 14.
The reason why the width of the each contact terminal 24 is prescribed to be 0.5 times that of the smallest one of the widths of the battery terminals 14 and the spaces between the battery terminals 14 is to show an embodiment in which the contact terminals 14 are in contact with the battery terminals 14 regardless of the types of mobile phones. With this embodiment, the scope of the present invention is not limited. Even if a plurality of contact terminals 24 simultaneously come in contact with a single battery terminal 14, the microcomputer 100 supplies a current to only a single contact terminal 24, so that the charging of the battery is not hindered. Accordingly, regardless of the types of mobile phones, when the contact terminals 24 are in contact with the battery terminals 14 of a mobile phone, the microcomputer 100 can detect the polarity of each corresponding battery terminal 14 and the capacity of the battery through the contact terminals 24 in contact with the battery terminal 14, and perform a charging process.
Furthermore, in the present invention, when a mobile phone is seated on a charging device, the fixation of a location using magnets can be performed as shown in FIGS. 1 and 2 to accurately bring the terminals into contact with each other.
That is, a magnet having an N pole 12 and an S pole 13 is attached on the rear cover 11 of the battery, a magnet having an S pole 22 and an N pole 23 is provided on the upper portion 21 of the housing at locations that allow the contact terminals 24 of the charging device and the battery terminals 14 of the battery to correspond to each other, so that the magnetic poles 12 and 13 of the battery and the magnetic poles 22 and 23 of the housing are arranged to come in contact with each other by magnetic attraction between opposite poles.
As the magnets, magnetic bodies, such as permanent magnets or electromagnets, in which N and S poles are divided, can be used. In the present invention, the battery terminals and the contact terminals are brought into contact with each other at precise locations using the principle of the magnetic attraction in which N and S poles attract each other.
Meanwhile, as shown in FIG. 3, the microcomputer 100 integrally includes a plurality of switching ports A 110 measuring the voltages of respective contact terminals 24 by switching the contact terminals 24, an ADC input unit 120 converting an analog voltage signal, checked in the contact terminal 24, into a digital voltage signal, and a plurality of switching ports B 130 supplying a current through a charging circuit (not shown) by switching the respective charging terminals 140 of the charging device 20 in accordance with the measurement results of the contact terminals 24.
The microcomputer 100 is formed of one chip, and is provided with separate switching ports A and B 110 and 130 to control • a plurality of transmitters (not shown) functioning as switches . Since the transmitters functioning as switches are well known, a detailed description thereof is omitted.
The ports B 130 perform the switching operations as many times as the number of the contact terminals 24. In the present invention, the random number of the contact terminals 24, n, has been set and described, as shown in FIG. 3. As shown in FIG. 1 for an embodiment of the present invention, if the number of the contact terminals is equal to or larger than ten, the contact terminals 24 can be used as terminals for checking voltages. That is, by the control of the microcomputer 100, the ports B 130 turn on a SAl 131 and measure the terminal voltage of a battery terminal that is in contact with a contact terminal 1. Since the measured terminal voltage is an analog signal, the ADC input unit 120 converts the analog signal into a digital signal and transmits the digital signal to the microcomputer 100, and the microcomputer 100 compares the terminal voltage with a reference voltage Vr. If, as a result of the comparison, the terminal voltage is equal to or higher than the reference voltage, the microcomputer 100 determines that the terminal voltage is positive, and performs a charging operation by turning on a SBl 111 and enabling the charging circuit (not shown) to supply a current to the battery terminal 14 through a corresponding contact terminal 24.
Meanwhile, if the terminal voltage of the SAl 131 is lower than the reference voltage, the microcomputer 100 turns off the SAl 131 and turns on a SA2, and repeatedly performs the above operation. The above operation is repeated until the SAn is operated, and the charging process of supplying the current to a terminal, which corresponds to a positive input terminal, is completed.
Meanwhile, when the battery terminals 14 kept in a pocket or bag are in contact with a conductive material, such as a metal material, short circuit may occur in the mobile phone, so that the battery terminals 14 included in a battery housing have surfaces whose parts are depressed inward, as shown in FIG. 4.
Accordingly, each of the contact terminals 24 of the charging device must be protruded upward to come in contact with the depressed battery terminals 14. It is preferable that the height of the protruded contact terminal 24 is higher than that of the charging terminal provided in the conventional charging device by 2 to 5 mm or more to be used in various mobile phones . Of course, the contact terminals 24 are pushed into terminal accommodation spaces 34 by the action of elastic members 30, as shown in FIG. 4, so that the contact terminals 24 can be used regardless of the heights of battery terminals 14 that are different according to mobile phones. The respective battery terminals 14 and the contact terminals 24 are manufactured using a conductive material, and the respective contact terminals 24 are connected to an internal circuit by lead wires .
That is, each contact terminal 24 included in the battery housing is integrated with a stopper member 32 located on an outer lower portion of the contact terminal 24, and a terminal accommodation space 34 including the elastic member 30 therein to allow the contact terminal 24 to be pushed into the inside thereof is formed under the contact terminal 24, so that, when the mobile phone is separated from the charging device, the contact terminal 24 moves to the upper part by a restoring force of the elastic member 30 until the stopper member 32 reaches a stopper protrusion 33 provided on the upper portion of the terminal accommodation space 34. Meanwhile, the microcomputer of the present invention performs a control process in accordance with a flowchart shown in FIG. 5.
When the battery terminals 14 of the mobile phone are connected to the contact terminals 24 for charging the battery at step S10, the microcomputer 100 automatically detects the connection and generates an operation signal at step Sll.
If the battery of the mobile phone has been discharged, voltage measurement is impossible because the battery terminals 14 are locked. Accordingly, an instant current impulse of 1 mA is applied to the SBl 111 of the ports B 130 for 10 to 15 minutes at step S12 to release the lock.
When the lock is released, the microcomputer 100 turns on the SAl 131 at step S13, checks the terminal voltage VI of a contact terminal 1 and compares the terminal voltage VI with a reference voltage Vr at step S14. If, as a result of the comparison, the terminal voltage VI is higher than the reference voltage Vr, the microcomputer 100 determines that the contact terminal 1 is a positive input terminal, and turns on the SBl 111 through the ports B 130 at step S15.
When the SBl 111 is turned on, the current fed through the charging circuit (not shown) is supplied to the contact terminal 1 and the corresponding battery terminal 14, so that the battery 10 is charged. In this case, the microcomputer 100 compares again the terminal voltage VI with a buffer voltage Vc at step S16. If the terminal voltage VI is lower than the buffer voltage Vc, the microcomputer 100 displays an indication of charging being performed at step S17, and simultaneously returns and continues to perform the charging process . If the terminal voltage VI is equal to or higher than the buffer voltage Vc, the microcomputer 100 displays an indication of charging having been completed at step S18, and the charging process is completed.
Meanwhile, if the terminal voltage VI of the contact terminal 1 is lower than the reference voltage Vr, the SAl 111 is turned off, and an instant current impulse of 1 mA is applied to the SB2 of the ports B 130 for 10 to 15 ms at step S22.
When the lock is released, the microcomputer 100 turns on a SA2 at step S23 and checks the terminal voltage V2 of a contact terminal 2, and compares the terminal voltage V2 with the reference voltage Vr at step S24. If, as a result of the comparison, the terminal voltage V2 is higher than the reference voltage Vr, the microcomputer 100 determines that the contact terminal 2 is a positive input terminal, and turns on the SB2 through the ports B 130.
When the SB2 is turned on, the current fed through the charging circuit is supplied to the contact terminal 2 and the corresponding battery terminal 14, so that the battery 10 is charged. In this case, the microcomputer 100 compares again the terminal voltage V2 with the buffer voltage Vc at step S26.
If the terminal voltage V2 is lower than the buffer voltage Vc, the microcomputer 100 displays an indication of charging being performed at step S27, and simultaneously returns and continues to perform the charging process. If the terminal voltage V2 is equal to or higher than the buffer voltage Vc, the microcomputer 100 displays an indication of charging having been completed at step S28, and the charging process is completed.
Since the above process is repeated as many times as the number of the contact terminals, intermediate operations are omitted, and a process for the n-th contact terminal 24 is described below.
If the terminal voltage Vn_! of the contact terminal n-
1 is lower than the reference voltage Vr, the SAn-1 is turned off, and an instant current impulse of 1 mA is applied to the SBn 119 of the ports B 130 for 10 to 15 ms at step S32.
When the lock is released, the microcomputer 100 turns on the SAn 139 at step S32 and checks the terminal voltage Vn of a contact terminal n, and compares the terminal voltage Vn with the reference voltage Vr at step S34. If, as a result of the comparison, the terminal voltage Vn is higher than the reference voltage Vr, the microcomputer 100 determines that the contact terminal n is a positive input terminal, and turns on the SBn 139 through the ports B 130 at step S35.
When the SBn 139 is turned on, the current fed through the charging circuit is supplied to the contact terminal n and the battery terminal 14, so that the battery 10 is charged. In this case, the microcomputer 100 compares again the terminal voltage Vn with the buffer voltage Vc at step S36. If, as a result of the comparison, the terminal voltage Vn is lower than the buffer voltage Vc, the microcomputer 100 displays an indication of charging being performed at step S37, and simultaneously returns and continues to perform the charging process . If, as a result of the comparison, the terminal voltage V2 is equal to or higher than the buffer voltage Vc, the microcomputer 100 displays an indication of charging having been completed at step S38, and the charging process is completed.
Meanwhile, although in the flowchart shown in FIG. 5, an "immediate input" process in which, when a positive input terminal is checked by successive switching operations through ports A 110, a microcomputer immediately turns on a corresponding charging terminal 140 through the ports B 130, has been described, an "input after checking" process in which all of contact terminals 24 are switched through the ports A 110 and then corresponding charging terminals 140 detected as the positive input terminals through the ports B 130 are sequentially turned on, also exhibits the same result as the "immediate input process," so that a description of the detailed control operations thereof is omitted.
The present invention can be variously1 modified, and only a specific embodiment has been described in the best mode. Accordingly, the scope of the present invention is not limited by the specific embodiment described in the best mode, but it should be understood that various modifications, additions and substitutions within the scope and spirit of the invention defined by the attached claims are included in the present invention.

Claims

1. A battery charging device for various types of mobile phones, comprising: four or more contact terminals (24) provided on an upper portion (21) of a housing to correspond to battery terminals (14) of a battery of a mobile phone; switching ports A (110) provided in the housing to switch the plurality of contact terminals (24) and check voltages of the contact terminals; an Analog Digital Converter (ADC) input unit (120) converting an analog voltage signal, checked in each contact terminal (24), into a digital voltage signal; a microcomputer (100) comparing the digital voltage signal, output from the ADC input unit (120) , with a reference value and controlling ports B (130) by issuing a certain control signal; and the switching ports B (130) switching charging terminals (140) of the charging device in response to the control signal issued by the microcomputer (24) and supplying a current to corresponding contact terminals.
2. The battery charging device as set forth in claim 1, wherein the battery includes a magnet having an N pole (12) and an S pole (13) attached on a rear cover thereof, and the housing includes a magnet having S pole (22) and an N pole (23) provided on an upper portion thereof at locations that allow the contact terminals of the charging device and the battery terminals of the battery to correspond to each other, so that the magnetic poles (12, 13) of the battery and the magnetic poles (22, 23) of the housing are brought into contact with each other by magnetic attraction between opposite poles .
3. The battery charging device as set forth in claim 1, wherein the contact terminals (24) each have a width smaller than that of each battery terminals (14), the number of the contact terminals (24) is larger than that of the battery terminals (14), and the contact terminals (24) are protruded upward by elastic members (30) included therein.
4. A method of controlling a charging device for various types of mobile phones in which a control process of a microcomputer is performed in such a way that: when battery terminals (14) of a mobile phone are connected to contact terminals (24) for charging the battery (S10) , the microcomputer (100) automatically detects the connection and generates an operation signal
(Sll); when the battery of the mobile phone is discharged, voltage measurement is impossible because the battery terminal (14) is locked, so that an instant current impulse of 1 mA is applied to a SBl of ports B (130) for 10 to 15 minutes to release the lock (S12); when the lock is released, the microcomputer (100) turns on a SAl of the ports A (110) (S13) , checks a terminal voltage VI of a contact terminal 1, compares the terminal voltage VI with a reference voltage Vr, (S14) and, if the terminal voltage VI is higher than the reference voltage Vr, the microcomputer determines that the contact terminal 1 is a positive input terminal, and turns on the SBl through the ports B (130) (S15) ; when the SBl is turned on, a current fed through the charging circuit is supplied to the contact terminal 1 and a corresponding battery terminal (14), so that the battery is charged, and in this case, the microcomputer (100) compares again the terminal voltage VI with a buffer voltage Vc (SI6) ; if the terminal voltage VI is lower than the buffer voltage Vc, the microcomputer displays an indication of charging being performed (S17), and simultaneously returns and continues to perform the charging operation, while, if the terminal voltage VI is equal to or higher than the buffer voltage Vc, the microcomputer displays an indication of charging having been completed (S18) , and the charging process is completed; if the terminal voltage VI of the contact terminal 1 is lower than the reference voltage Vr, the SAl of the port A (110) is turned off, and an instant current impulse of 1 mA is applied to the SB2 of the ports B (130) for 10 to 15 ms (S22); when the lock is released, the microcomputer (100) turns on the SA2 of the ports A (110) (S23) , checks a terminal voltage V2 of a contact terminal 2, and compares the terminal voltage V2 with the reference voltage Vr (S24), and if the terminal voltage V2 is higher than the reference voltage Vr, the microcomputer (100) determines that the contact terminal 2 is a positive input terminal and turns on the SB2 through the ports B (130) (S25) ; when the SB2 is turned on, the current fed through the charging circuit is supplied to the contact terminal 2 and a corresponding battery terminal (14), so that the battery is charged, and in this case, the microcomputer compares again the terminal voltage V2 with the buffer voltage Vc (S26) ; if the terminal voltage V2 is lower than the buffer voltage Vc, the microcomputer displays an indication of charging being performed (S27), and simultaneously returns and continues to perform the charging process, while, if the terminal voltage V2 is equal to or higher than the buffer voltage Vc, the microcomputer displays an indication of charging having been completed and the charging process is completed (28); if a terminal voltage Vn-1 of a contact terminal n is lower than the reference voltage Vr, the SAn-1 of the ports
A (110) is turned off and an instant current impulse of 1 mA is applied to the SBn of the ports B (130) for 10 to 15 ms (S32); when the lock is released, the microcomputer (100) turns on the SAn of the port A (110) (S33) , checks a terminal voltage Vn of a contact terminal n, and compares the terminal voltage Vn with the reference voltage Vr (S34), and if the terminal voltage Vn is higher than the reference voltage Vr, the microcomputer determines that the contact terminal n is a positive input terminal and turns on the SBn through the ports B (130) (S35) ; when the SBn is turned on, the current fed through the charging circuit is supplied to the contact terminal n and a corresponding battery terminal (14), so that the battery is charged, and in this case, the microcomputer (100) compares again the terminal voltage Vn with the buffer voltage Vc (S36) ; and if the terminal voltage Vn is lower than the buffer voltage Vc, the microcomputer displays an indication of charging being performed (S37) and simultaneously returns and continues to perform the charging process, while, if the terminal voltage V2 is equal to or higher than the buffer voltage Vc, the microcomputer displays an indication of charging having been completed (S38) and the charging process is completed.
PCT/KR2004/001089 2003-05-17 2004-05-11 A charger for the various batterys of the cellular phones and the control method of the charger WO2004102767A1 (en)

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KR1020030031425A KR100402916B1 (en) 2003-05-17 2003-05-17 Cellular phone charger and method for controlling the same

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FR2907906A1 (en) * 2006-09-25 2008-05-02 Jye Chuang Electronic Co Ltd Battery polarity automatic detection device uses detector units to detect positive voltage that connects the positive poles of the detector device to the detector terminals and positive poles of the battery

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Publication number Priority date Publication date Assignee Title
KR101072949B1 (en) 2011-06-27 2011-10-17 에치디프로 주식회사 Battery charge apparatus for mobile phone
CN110875611A (en) * 2018-08-30 2020-03-10 宁德时代新能源科技股份有限公司 Charging circuit and control method thereof

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US6169388B1 (en) * 1999-06-11 2001-01-02 Nokia Mobile Phones Limited Charging method and device
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Publication number Priority date Publication date Assignee Title
FR2907906A1 (en) * 2006-09-25 2008-05-02 Jye Chuang Electronic Co Ltd Battery polarity automatic detection device uses detector units to detect positive voltage that connects the positive poles of the detector device to the detector terminals and positive poles of the battery

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