KR20120032377A - System for charging battery using charging gender - Google Patents

Abstract

PURPOSE: A battery charging system using a charging gender is provided to prevent a battery from being damaged and minimize the size of the charging gender. CONSTITUTION: A charging system includes a TTA 24 pin charger. A portable terminal includes an input terminal and charges a battery through a step-up voltage. The step-up voltage is inputted through the input terminal. A charging gender(200) includes a first interface unit(210) and a second interface unit(220). The first interface unit is connected to a connector(120) of the TTA 24 pin charger. The second interface unit is connected to a micro USB terminal or fire wire terminal(310).

Description

Battery charging system using charging gender {system for charging battery using charging gender}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery charging system using a charging gender. In particular, a micro USB input terminal having a 5V input voltage or a Fire Wire input terminal having a 12V input voltage is a TTA 24-pin charger that outputs 4.2V. In order to charge the battery (lithium ion battery) of the mobile terminal through, it is not only possible to determine whether the battery is installed or whether the battery is fully charged, but also includes a voltage boost function without a separate auxiliary battery, and 5V as an input voltage. By using a charging gender that can charge a battery of a mobile terminal having a micro USB input terminal or a Fire Wire input terminal having a 12V input voltage, the size of the charging gender is reduced and the battery is prevented from being damaged. To a battery charging system using a suitable charging gender.

In recent years, with the development of semiconductor technology, portable terminals (or multimedia devices) have become smaller and lighter in size, which makes them easier to carry. The user can search for the desired information or store the retrieved information anytime, anywhere, regardless of time or place, while moving or indoors using the portable terminal, and can reproduce the desired information. Such mobile terminals have become a necessity of modern man.

In particular, among mobile terminals, the conventional mobile phone has been a main function of a call function for talking with the other party, but gradually a MP3 player, a portable multimedia player (PMP), a digital multimedia broadcasting (DMB) device, and a digital camera are used. It is the most widely used as many additional add-ons like this are added.

In general, a cellular phone is a 24-pin input / output terminal (hereinafter referred to as a "24-pin standard terminal") according to the "I / O terminal connection standard of a mobile telephone terminal" adopted by the Telecommunication Technology Association (TTA). use.

Mobile phones using existing 24-pin standard terminals have low transmission speeds for transmitting and receiving data with external devices. In other words, the 24-pin standard terminal is unsuitable for mobile phones that need to transfer large amounts of data at high speed, and is difficult to mount in mobile phones that are becoming increasingly slim due to large layouts.

As mobile phones become increasingly slimmer and smaller, manufacturers can charge and replace data faster than traditional 24-pin standard terminals, and attach new I / O terminals to the cellular phone with a smaller layout than conventional 24-pin standard terminals. It was.

Manufacturers also offer separate genders for connecting devices using the 24-pin standard terminals with mobile phones using the new I / O terminals. That is, gender is an adapter (or converter) for connecting an input / output terminal having a different standard, for example, a conventional mobile phone charger using a 24-pin input / output terminal and a mobile phone using a different input / output terminal for each manufacturer.

Recently, products have been introduced for smartphones with a TTA 24-pin standard charger, USB or micro USB built-in, and a gender system that can be connected to an iPhone or iPod to charge the battery.

For example, the iPhone can't be replaced. So a variety of charging products are being launched and sold. For some time, the 24-pin standard has been used as a standard charging standard in Korea, and as the 24-pin standard has been released, the charging adapter has disappeared from the mobile phone package. Instead, the charging adapter is a free gift and sometimes has to be purchased separately. In fact, for a while, the 24-pin specification was well followed, allowing a single charging adapter to charge a variety of mobile phones.

Of course, there has been a variety of charge standard products for a while until a new standard called TTA 20-pin has been released. In the case of 20-pin, the domestic standard has been proposed as an international standard, but the smart phone, which is the most popular these days, uses most of the micro 5-pin.

In the case of smartphones, the micro 5 pin is used as a charging and sync standard, but Apple's iPhone / iPod / iPad uses a 30-pin dock connector that has been used since the iPod.

In addition, the iPhone, which has a built-in battery and cannot be replaced, has been a negative factor for users who are used to using existing mobile phones, and various methods are used to solve this inconvenience. For example, a spare battery, battery case and 24-pin charging gender.

By the way, this 24-pin charging gender has had as many complaints as demand. It wasn't charging properly. Apple needs to charge at 5V, but the domestic 24-pin charging adapter is 4.2V. As a result, the charging gender must boost this part steadily to charge properly. So in the case of a 24-pin charging gender, there's a spare small battery, a dummy battery.

The small battery included in this charging gender is charged on a 24-pin adapter and then boosted to charge iPhones and iPods.

However, as the battery is embedded in the charging gender in this way, the volume of the gender becomes large and becomes large, which is not suitable as a portable device, and also causes a problem that full charge cannot be reached.

The present invention was devised to solve the above problems of the prior art, a micro USB input terminal having a 5V input voltage or a 12V input voltage as a TTA 24-pin charger outputting 4.2V. ) In order to charge the battery (lithium ion battery) of the mobile terminal through the input terminal, it is possible to determine whether the battery is installed and whether the battery is fully charged. By using a charging gender that can charge a battery of a mobile terminal having a micro USB input terminal with an input voltage or a Fire Wire input terminal with a 12V input voltage, the size of the charging gender is reduced and the battery Providing a battery charging system with a suitable charging gender to prevent damage The purpose.

In order to solve the above problems, the constituent means of the battery charging system using the present invention, the charging gender, is a TTA 24-pin charger, an input having a boost voltage higher than the input voltage input from the TTA 24-pin charger. A mobile terminal for charging a battery using a boosted voltage input through the input terminal, a first interface connected to a connector of the TTA 24-pin charger, and a micro USB terminal or a fire wire terminal; And a charging gender for outputting a boosted voltage boosted by the input voltage input through the first interface to a micro USB terminal or a fire wire terminal of the portable terminal through the second interface. Characterized in that made.

Here, the input terminal of the portable terminal is characterized in that the micro-USB input terminal for requesting 5V input or the fire wire input terminal for requesting 12V input.

The charging gender may include a voltage booster configured to boost the input voltage input through the first interface unit to the boosted voltage and output the boosted voltage to the second interface unit, and receive a boosted voltage output from the second interface unit to receive a voltage of 3.8V to After the voltage regulator outputs a voltage between 4V and a voltage between 3.8V and 4V output from the voltage regulator, the voltage controller stops the operation and determines whether the mobile terminal is fully charged or whether an abnormal current is generated. Characterized in that it comprises a control unit for detecting.

In addition, the TTA 24-pin charger first outputs a battery sense voltage between 1V and 2.6V to the first interface unit, and then recognizes a voltage between 3.8V and 4V output from the voltage adjuster and then outputs 4.2V. It characterized in that the charging voltage of the output to the first interface unit.

In addition, the controller periodically measures the current output to the second interface unit to periodically measure the charge voltage of the battery, if the charge voltage is a battery voltage of the battery generates a 4.2V voltage to the TTA 24-pin charger And performing a buffer checking operation for outputting to the buffer.

Here, the buffer confirmation operation of the controller is characterized in that it is performed for 3 minutes to 5 minutes.

The controller may measure the current output to the second interface unit and stop the operation of the voltage boosting unit if it is determined that the abnormal current is present.

According to a battery charging system using a charging gender of the present invention having the above-described problems and solutions, a micro-wire input terminal having a 5V input voltage or a fire wire having a 12V input voltage is a TTA 24-pin charger that outputs 4.2V. (Fire Wire) In order to charge the battery (lithium ion battery) of the mobile terminal through the input terminal, it is possible to determine whether the battery is installed and whether the battery is fully charged, or to include a voltage boost function without installing a separate auxiliary battery. The size of the charging gender can be reduced by using a charging gender which can charge a battery of a mobile terminal having a micro USB input terminal having a 5 V input voltage or a Fire Wire input terminal having a 12 V input voltage. It has an advantage that can prevent and damage the battery.

1 is a block diagram of a battery charging system using a charging gender according to an embodiment of the present invention.
2 is a block diagram of a charging gender according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of a battery charging system using a charging gender of the present invention having the above problems, solving means and effects.

1 is a block diagram of a battery charging system using a charging gender according to an exemplary embodiment of the present invention.

As shown in FIG. 1, a battery charging system using a charging gender according to an exemplary embodiment of the present invention includes a TTA 24-pin charger 100, a mobile terminal 300, and a charging gender 200 connecting them to each other. do.

The charging gender 200 according to the present invention includes a first interface unit 210 which is an input terminal of a slot type for inserting a connector 120 of a charger connected to a cable 110 from a TTA 24-pin charger 100 on one side of a body. ) Is formed, and a second interface portion 220 for insertion into the micro USB input terminal or the fire wire input terminal 310 provided in the mobile terminal 300 is formed on the opposite side or the side surface. .

Therefore, the connector 120 of the TTA 24-pin charger 100 is inserted into the first interface 210 corresponding to the input terminal of the charging gender 200 and then the second interface 220 of the charging gender 200 is inserted. ) Is inserted into the micro USB input terminal or the fire wire input terminal 310 provided in the mobile terminal 300, 4.2V output from the TTA 24-pin charger 100 by the charging gender 200 Voltage is boosted to a voltage for use in the mobile terminal 300 (for example, a 5V voltage required as an input of a micro USB input terminal or a 12V voltage required as an input of a fire wire input terminal). As a result, the battery of the mobile terminal can be charged.

The TTA 24-pin charger 100 is a charger used as a standard charging standard in Korea, and is a charger that outputs 4.2V to charge an existing domestic mobile phone. The TTA 24-pin charger 100 outputs 4.2V as a charging voltage when the battery is connected, and supplies a stepped output voltage to check whether the battery is connected to the battery when initially connected to the power terminal.

That is, when the TTA 24-pin charger 100 is initially connected to a power supply terminal (outlet), the TTA 24-pin charger 100 primarily outputs a voltage between 1V and 2.6V as a battery detection voltage. More specifically, when connected to the initial power supply terminal, rather than outputting a voltage of 4.2V directly, the output voltage is supplied while raising the voltage from 1V to 2.6V for a predetermined time.

After outputting the battery detection voltage, the TTA 24-pin charger 100 determines whether the battery is connected through a feedback voltage or a current. If it is connected, supply a charging voltage of 4.2V.

That is, to protect the battery, 4.2V is not applied immediately, but a voltage of about 2.6V is preferentially applied, and when the battery is recognized, a voltage of 4.2V, which is a charging voltage, is supplied.

In summary, the TTA 24-pin charger 100 first outputs a battery sensing voltage between 1V and 2.6V to the first interface unit 210 of the charging gender 200, and then the voltage of the charging gender 200. After recognizing the voltage between 3.8V and 4V output from the adjuster 240, an operation of outputting a charging voltage of 4.2V to the first interface unit 210 is performed.

The mobile terminal 300 equipped with a battery charged by the TTA 24-pin charger 100 has an input terminal 310 having a boosted voltage higher than an input voltage input from the TTA 24-pin charger 100. It is provided. Then, the battery is charged using the boosted voltage input through the input terminal 310.

The input terminal 310 of the portable terminal 300 may correspond to a micro USB input terminal requiring 5V as an input or a fire wire input terminal requiring 12V as an input. Specifically, the mobile terminal includes a smart phone having a 5-pin or 8-pin micro USB input terminal having 5 V as an input voltage, or an iPhone / iPod having a 30-pin Fire Wire input terminal having a 12 V input voltage as the input terminal. This may be the case.

In summary, the mobile terminal 300 is a terminal having a micro USB input terminal having a 5V input voltage or a wire fire input terminal having a 12V input voltage, and charging a lithium ion battery through such an input terminal. do. On the other hand, in some cases, the input voltage is not limited to 5V or 12V, and a mobile terminal having an input terminal having a voltage of 5V or more as an input voltage may also be applicable.

The TTA 24-pin charger 100 and the mobile terminal 300 are connected by a charging gender 200. The charging gender 200 includes a first interface unit 210 for connecting with the connector 120 of the TTA 24-pin charger 100, and a micro USB input terminal or a fire wire of the portable terminal 300. (fire wire) and a second interface 220 for connecting to the input terminal 310 is provided. Specifically, the first interface unit 210 is a 24-pin connection terminal, and the second interface unit 220 is a 5-pin / which may be connected to a micro USB input terminal or a fire wire input terminal 310. Corresponds to the 8- or 30-pin connection terminals.

The charging gender 200 is the first interface unit 210 and the micro USB input terminal or fire wire (fire wire) input terminal 310 connected to the connector 120 of the TTA 24-pin charger 100 as described above A second interface unit 220 connected to the second terminal unit 220, and a boosted voltage obtained by boosting the input voltage input through the first interface unit 210 through the second interface unit 220 of the portable terminal. A micro USB input terminal or a fire wire (fire wire) input terminal 310 to output the function.

A detailed configuration of the charging gender 200 that performs the above function is as shown in FIG. 2.

As shown in FIG. 2, the charging gender 200 includes a first USB interface 210 connected to the connector 120 of the TTA 24-pin charger 100 and a micro USB input terminal of the portable terminal 300 or the like. The second interface unit 220 is connected to a fire wire input terminal 310.

In addition, the charging gender 200 inputs an input voltage input through the first interface unit 210 from a micro USB input terminal or a fire wire input terminal 310 provided in the portable terminal. The voltage booster 230 boosts the boosted voltage corresponding to the voltage and outputs the boosted voltage to the second interface 220.

Specifically, the voltage boosting unit 230 receives a voltage corresponding to the input voltage supplied from the TTA 24-pin charger 100 through the first interface unit 210, and is provided in the mobile terminal 300. The voltage is increased to 5V or 12V corresponding to the input voltage required by the micro USB input terminal or the fire wire input terminal 310 and output to the second interface unit 220.

The voltage boosting unit 230 boosts the input voltage to 5V and outputs it to the second interface unit 220 when the portable terminal 300 includes a micro USB input terminal having 5V as an input. When the portable terminal 300 includes a fire wire input terminal for inputting 12V, the input voltage is boosted to 12V and output to the second interface unit 220.

Since the voltage input to the voltage booster 230 is an output voltage supplied from the TTA 24-pin charger 100, as described above, the battery sensed voltage or the 4.2 V voltage is charged between 1V and 2.6V. Voltage is a voltage input step by step.

As will be described later, when the battery sensing voltage, which is a voltage between 1V and 2.6V, is first applied as an input voltage and is boosted by the voltage boosting unit 230, the voltage adjusting unit 240 may output the second interface unit 220. ) Outputs voltage with current between 3.8V and 4V.

That is, when the second USB interface 220 and the micro USB input terminal or the fire wire input terminal of the battery-equipped portable terminal are normally connected, the boosted voltage (5V or 12V) is increased in the voltage booster 230. The voltage adjusting unit 240 outputs a voltage between 3.8V and 4V by inputting the boosted voltage. If the second interface unit 220 and the micro USB input terminal or the fire wire input terminal of the portable terminal are not normally connected or the battery is not mounted in the portable terminal, the voltage boosting unit 230 boosts the voltage. The voltage 5V or 12V will not be output, and as a result, the voltage adjusting unit 240 outputs a voltage of 0V because the boosted voltage is not input.

The voltage adjusting unit 240 may be designed to output an output voltage differently depending on whether a voltage or current is normally input when the battery is normally created or a voltage or current is normally input when the battery is normally connected to the micro USB. .

For example, a voltage or current that may be determined when the battery is normally installed in the portable terminal 300 and a voltage or current value that may be determined when the second interface is connected to the micro USB and the like in a normal state (first The input range value) can be determined by a preliminary experiment, and the voltage or current range value is output to the second interface unit 220 when the battery is not installed or the second interface unit is not connected to the micro USB. Since it is different from the range value (second input range value) of the voltage or current to be input, when the first input range value is input, a voltage between 3.8V and 4V is output, and the second input range value is inputted. In this case, the circuit can be configured to output a voltage of 0V. This can be accomplished through various circuits.

The voltage output from the voltage adjuster 240 is input to the TTA 24-pin charger 100 and the controller 250. When the TTA 24-pin charger 100 receives the 0V voltage from the voltage adjuster 240, the TTA 24-pin charger 100 outputs a voltage of OV without outputting the 4.2V voltage, which is the charging voltage, and outputs a voltage between 3.8V and 4V. In case of input, 4.2V, the charging voltage is output.

At the same time, when the controller 250 detects a voltage between 3.8V and 4V, the voltage output from the voltage adjuster 240, the controller 250 performs a control to stop the operation of the voltage adjuster 240. When the voltage output from the voltage adjuster is 0V, the controller continuously detects whether a voltage between 3.8V and 4V is output from the voltage adjuster.

The reason why the controller 250 controls only the operation of the voltage adjuster 240 to stop when the voltage output from the voltage adjuster 240 is a voltage between 3.8V and 4V is normal for the mobile terminal 300. It is determined that the battery is mounted and the second interface unit is normally connected to the micro USB or the like, and the battery step-up or the terminal connection check is no longer performed through the voltage adjusting unit 240. This is to supply a voltage (5V or 12V) to the mobile terminal 300 so that battery charging proceeds normally.

On the other hand, the controller 250 may be configured to stop the operation of the voltage boosting unit 230 and the voltage adjusting unit 240 when the voltage output from the voltage adjusting unit 240 is 0V. The reason is that even if the voltage of OV is supplied from the TTA 24-pin charger, a minute voltage such as a parasitic voltage is applied to the voltage boosting unit 230 to be boosted, and then supplied to a portable terminal which is not equipped with a battery, or unnecessary. This is to prevent the voltage adjusting unit 240 from being operated.

Here, the important matters correspond to the case where the voltage output from the voltage adjusting unit 240 is 0V, and the controller 250 stops the operation of the voltage boosting unit 230 and the voltage adjusting unit 240. Periodically, the voltage boosting unit 230 and the voltage adjusting unit 240 should be controlled to operate normally. The reason is that when the battery is normally installed in the portable terminal after the current state, the charging voltage is normally applied to the battery.

As described above, when the controller 250 receives a voltage between 3.8V and 4V from the voltage adjuster 240, the controller 250 stops the operation of the voltage adjuster 240 to perform the battery installation check operation. The voltage booster 230 is boosted to a voltage of 5V or 12V by inputting the charging voltage supplied from the TTA 24-pin charger 100 so as to be normally supplied to the battery.

Here, the important point is that the control unit 250 outputs a voltage between 3.8V and 4V from the voltage adjusting unit, while the TTA 24-pin charger 100 supplies a charging voltage of 4.2V, the mobile terminal 300 It continuously detects whether the battery is fully charged and whether there is an abnormal current.

Specifically, the controller 250 periodically measures the current output to the second interface unit 220 to periodically measure the charging voltage of the battery, but if the charging voltage is a buffer voltage of the battery, the voltage is 4.2V. Generates a buffer check operation to output to the TTA 24-pin charger 100. The buffer checking operation of the controller 250 is performed for 3 to 5 minutes.

As such, the reason why the controller performs the buffer confirmation operation for a predetermined time is to allow the TTA 24-pin charger 100 to recognize that the buffer is almost completed and to reduce the current by itself.

When the controller 250 generates the 4.2V voltage and outputs the voltage to the TTA 24-pin charger 100, the TTA 24-pin charger 100 recognizes that the battery is almost fully charged, and when the buffer is completed, the circuit Does not flow current.

If the battery is fully charged, if voltage and current are continuously applied to the battery, the battery may be damaged, and the controller 250 periodically checks whether the battery is fully charged.

The method of periodically measuring the current output to the second interface unit 220 to periodically measure the charging voltage of the battery may be performed in various circuit configurations. For example, the current flowing to the second interface unit may be continuously changed while the battery is being charged, and eventually, when the battery is fully charged, the current flowing to the second interface unit may be set to a value within a predetermined range. When the current passes a predetermined resistance, the voltage across the resistor may be measured to determine whether the battery is charged or fully charged.

Meanwhile, the controller 250 continuously measures the current output from the second interface unit while 4.2 V, the charging voltage is applied, from the TTA 24-pin charger to determine whether there is an abnormal current. After the controller measures the current, when it is determined that an abnormal current such as an overcurrent occurs, the abnormal current such as overcurrent flows into the portable terminal, thereby preventing the battery or the internal circuit of the portable terminal from being damaged. An operation of stopping the operation of 230 is performed.

On the other hand, the operation of the voltage boosting unit 230 or the voltage adjusting unit 240 by the control unit 250 operates in a stopped state or a normal state, the return to the stopped state or normal state is the control unit 250 The operation is controlled by turning on or off the switches provided at the front or rear ends of the voltage boosting unit 230 and the voltage adjusting unit 250. Of course, the operation of the voltage boosting unit 230 and the voltage adjusting unit 250 may be controlled through various methods other than the on or off of the switch.

100: TTA 24-pin charger 120: charger connector
200: charging gender 210: first interface unit
220: second interface unit 230: voltage boosting unit
240: voltage adjusting unit 250: control unit
300: portable terminal 310: micro USB / Firewire terminal

Claims (7)

TTA 24-pin charger;
A mobile terminal having an input terminal for inputting a boost voltage higher than an input voltage input from the TTA 24-pin charger, and charging the battery using the boost voltage input through the input terminal;
A boosted voltage provided with a first interface connected to the connector of the TTA 24-pin charger and a second interface connected to the micro USB terminal or the fire wire terminal, and boosting the input voltage input through the first interface; And a charging gender to output the micro USB terminal or the fire wire terminal of the portable terminal through the second interface unit.
The method according to claim 1,
The input terminal of the portable terminal is a battery charging system using a charging gender, characterized in that the micro-USB input terminal that requires 5V input or the fire wire input terminal that requires 12V input.
The method according to claim 2, wherein the charging gender,
A voltage boosting unit boosting an input voltage input through the first interface unit to the boosting voltage and outputting the voltage to the second interface unit;
A voltage adjusting unit which receives the boosted voltage output to the second interface unit and outputs the voltage between 3.8V and 4V;
And a controller for recognizing a voltage between 3.8V and 4V output from the voltage adjusting unit, stopping the operation of the voltage adjusting unit, and detecting whether the mobile terminal is fully charged or whether an abnormal current is generated. Battery charging system using a charging gender.
The method according to claim 3,
The TTA 24-pin charger first outputs a battery sensing voltage between 1V and 2.6V to the first interface unit, and then recognizes a voltage of 4.2V after recognizing a voltage between 3.8V and 4V output from the voltage adjusting unit. Battery charging system using a charging gender, characterized in that for outputting a voltage to the first interface unit.
The method according to claim 3,
The controller periodically measures the current output to the second interface unit and periodically measures the charging voltage of the battery. When the charging voltage is a buffer voltage of the battery, the controller generates a 4.2V voltage and outputs the voltage to the TTA 24-pin charger. Battery charging system using a charging gender, characterized in that for performing a buffer check operation.
The method according to claim 5,
The buffer confirmation operation of the control unit is a battery charging system using a charging gender, characterized in that performed for 3 to 5 minutes.
The method according to claim 3,
The control unit measures the current output to the second interface unit, if it is determined that the abnormal current, the battery charging system using a charging gender, characterized in that to stop the operation of the voltage boosting unit.

Images