KR101554605B1 - Mobile phone cover comprising auxiliary battery - Google Patents

Abstract

The present invention relates to an auxiliary battery integrated type mobile phone cover with a built-in auxiliary battery. To this end, the auxiliary battery integrated type mobile phone cover according to one embodiment of the present invention includes a cover plate formed to be detachably attachable to the rear surface of the mobile phone, for protecting the rear surface of the mobile phone, and an auxiliary An auxiliary battery charging circuit portion disposed above the inner surface of the battery pack to charge the auxiliary battery using an input terminal for receiving an external power supply and an external power supply provided at an upper portion of the inner surface of the battery pack, And an output terminal arranged to supply electric power of the auxiliary battery to the cellular phone.

Description

{MOBILE PHONE COVER COMPRISING AUXILIARY BATTERY}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile phone cover, and more particularly, to a mobile phone cover with an auxiliary battery integrated with an auxiliary battery.

2. Description of the Related Art Generally, a mobile phone has been developed as a portable and convenient form of communication as an essential means of communication in modern life such as telephone conversation, text transmission / reception, Internet access, and the like.

In the case where such a mobile phone is carried without a means for storing it separately, there is a problem that the mobile phone is dropped during the activity to cause discomfort or damage due to the impact. To prevent such a problem, various cases for protecting the mobile phone have been developed and used have.

In addition, a built-in battery that can not be replaced or a basic battery that can be replaced is disposed in the mobile phone. Recently, various technologies have been developed to increase the battery usage of the mobile phone as the power consumption of the mobile phone increases. A secondary battery pack is produced and sold as a way to overcome the limitation of the battery capacity of the mobile phone. When the user purchases the secondary battery pack and separately charges the secondary battery pack, the secondary battery pack is connected to the USB Use a separate cable, such as a cable, to charge the phone's primary battery.

However, in the case of such an auxiliary battery pack, there is a disadvantage that the user must carry the auxiliary battery pack separately from the cellular phone. Also, there is a disadvantage that the mobile phone and the auxiliary battery pack must be separately charged even when charging is performed.

KR 20-0446164 Y1

It is an object of the present invention to provide a mobile phone cover which can solve the inconvenience of separately carrying the auxiliary battery by integrally forming the auxiliary battery in the mobile phone cover.

It is another object of the present invention to provide a cellular phone cover which can wirelessly charge a basic battery or a secondary battery of a cellular phone, including a wireless charging coil and a wireless charging circuit for wireless charging.

A cover plate detachably attached to a rear surface of the mobile phone according to an embodiment of the present invention to protect the rear surface of the mobile phone; An auxiliary battery disposed above the inner surface of the cover plate to be detachably attached to the mobile phone; An input terminal disposed above the inner surface to receive external power; An auxiliary battery charging circuit unit disposed above the inner surface to charge the auxiliary battery using external power supplied to the input terminal; And an output terminal disposed on the inner surface to supply power of the auxiliary battery to the cellular phone.

The output terminal may be formed to be coupled to a wireless charging terminal formed on the rear surface of the cellular phone main body.

The auxiliary battery integrated type mobile phone cover may be mounted on the rear surface of the mobile phone body in place of the back cover of the mobile phone.

The auxiliary battery integrated type mobile phone cover may be in the form of a case coupled to the outside of the mobile phone.

The input terminal may be configured to be exposed on one side of the cover plate, and may be connected to the external terminal.

The input terminal may be a USB terminal.

A sealing member for sealing the auxiliary battery may be covered on the cover plate.

The sealing member may be covered on the cover plate to seal the auxiliary battery charging circuit portion, the input terminal, and the output terminal, and only the terminal electrode that is the output terminal may be exposed from the sealing member .

And a boost circuit for boosting the output voltage of the auxiliary battery to a rated voltage of the mobile phone.

At this time, the output terminal of the input terminal is connected to the input terminal of the charging circuit part of the auxiliary battery, and the external power is transmitted to the auxiliary battery charging circuit part. The output terminal of the auxiliary battery is connected to the auxiliary battery, Wherein the boosting circuit unit is connected between an output terminal of the auxiliary battery and an input terminal of the output terminal to boost the output voltage of the auxiliary battery and deliver the boosted voltage to the cellular phone, The battery of the mobile phone is first charged through the output terminal using a power source and the auxiliary battery is charged with the remaining power of the external power except the power transmitted to the output terminal, The power value of the external power source The greater of the value of the power value to the second battery, and the need for power that is required can have a value of maximum input power.

The output terminal of the input terminal is connected to the input terminal of the auxiliary battery charging circuit unit and the input terminal of the output terminal to transmit the external power supply to one or both of the auxiliary battery charging circuit unit and the output terminal, And the auxiliary battery charging circuit unit charges the auxiliary battery using the external power supply, and the boosting circuit unit is connected between the output terminal of the auxiliary battery and the input terminal of the output terminal, And the battery is charged through the output terminal by using the external power, and the remaining power of the external power, excluding the power transmitted to the output terminal, Can charge secondary battery The power value of the external power supplied to the input terminal may have a value of maximum input power plus a value of a maximum power required by the cellular phone and a value of power required by the auxiliary battery .

According to another aspect of the present invention, there is provided an auxiliary battery integrated type mobile phone cover, comprising: a cover plate for detachably attaching a rear surface of the mobile phone to protect the rear surface of the mobile phone; An auxiliary battery disposed above the inner surface of the cover plate to be detachably attached to the mobile phone; An input terminal disposed above the inner surface to receive external power; An auxiliary battery charging circuit unit disposed above the inner surface to charge the auxiliary battery using external power supplied to the input terminal; An output terminal disposed above the inner surface to supply electric power of the auxiliary battery to the cellular phone; A wireless charging coil disposed above the inner surface and configured to magnetically couple with a coil of an external non-contact charging device; And a wireless charging circuit unit charging the battery of the mobile phone or the auxiliary battery using an induction power induced in the wireless charging coil.

The output terminal may be coupled to a wireless charging terminal formed on the back surface of the cellular phone main body.

The auxiliary battery integrated type mobile phone cover may be mounted on the rear surface of the mobile phone body in place of the rear cover of the mobile phone.

The auxiliary battery integrated type mobile phone cover may be in the form of a case coupled to the outside of the mobile phone.

The input terminal may be configured to be exposed on one side of the cover plate, and may be connected to the external terminal.

The input terminal may be a USB terminal.

A sealing member for sealing the auxiliary battery may be covered on the cover plate.

The sealing member may be covered on the cover plate so as to seal the auxiliary battery charging circuit unit, the input terminal, the output terminal, the wireless charging coil, and the wireless charging circuit unit, and only the terminal electrode of the output terminal May be formed to be exposed from the sealing member.

The auxiliary battery integrated type mobile phone cover may further include a step-up circuit unit for stepping up the output voltage of the auxiliary battery to a rated voltage of the mobile phone.

At this time, the output terminal of the input terminal is connected to the input terminal of the auxiliary battery charging circuit portion, and the external power is transmitted to the charging circuit portion of the auxiliary battery. The output terminal of the auxiliary battery is connected to the auxiliary battery, And the boosting circuit unit is connected between the output terminal of the auxiliary battery and the input terminal of the output terminal to boost the output voltage of the auxiliary battery and transmit the boosted voltage to the cellular phone, A coil is connected to the wireless charging circuit section and an output terminal of the wireless charging circuit section is connected to an input terminal of the auxiliary battery charging circuit section so that the battery of the mobile phone is preferentially And the external power source or the external power source FIG doedoe configured to be capable of charging the secondary battery with the remaining power, except the power delivered into the output terminal of the power, the external power supply or the inductive power may have a value of electric power to the mobile phone is required to the maximum.

The output terminal of the input terminal is connected to the input terminal of the auxiliary battery charging circuit portion and the input terminal of the output terminal to transfer the external power supply to one or both of the auxiliary battery charging circuit portion and the output terminal, The output terminal of the battery charging circuit is connected to the auxiliary battery so that the auxiliary battery charging circuit part charges the auxiliary battery using the external power supply and the voltage booster circuit part is connected between the output terminal of the auxiliary battery and the input terminal of the output terminal And the output terminal of the wireless charging circuit is connected between the input terminal of the auxiliary battery charging circuit and the input terminal of the output terminal, , Wherein the external power source Is configured such that the battery of the cellular phone is firstly charged through the output terminal using the induction power and the auxiliary battery is charged with the remaining power of the external power or the induction power excluding the power transmitted to the output terminal The external power or the inductive power may have a value of a maximum value of the power required by the cellular phone and a value of the power required by the auxiliary battery.

The auxiliary battery integrated type mobile phone cover according to the present invention has an advantage that a user does not need to carry the auxiliary battery separately by incorporating the auxiliary battery in the mobile phone cover which can be detachably attached to the rear surface of the mobile phone body.

In addition, the auxiliary battery integrated type mobile phone cover according to the present invention has an advantage that the auxiliary battery and the wireless charging coil are disposed in the cellular phone cover, thereby charging the basic battery or the auxiliary battery of the cellular phone by the non-contact charging method.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a rear view of a cellular phone incorporating a secondary battery integrated cellular phone cover of the present invention. FIG.
FIG. 2 is a perspective view of a cover for an auxiliary battery integrated type mobile phone according to an embodiment of the present invention.
3 is a side sectional view of the auxiliary battery integrated type cellular phone cover of Fig.
Fig. 4 is a diagram showing a first example of the circuit configuration of the auxiliary battery integrated type mobile phone cover of Fig. 2;
Fig. 5 is a diagram showing a second example of the circuit configuration of the auxiliary battery integrated type cellular phone cover of Fig. 2;
FIG. 6 is a graph showing changes in voltage with time of the auxiliary battery and the cell phone battery when the auxiliary battery integrated type mobile phone cover of FIG. 2 is mounted on the mobile phone.
FIG. 7 is a perspective view of a cover for an auxiliary battery integrated type mobile phone according to another embodiment of the present invention.
8 is a side sectional view of the auxiliary battery integrated type cellular phone cover of Fig. 7;
Fig. 9 is a diagram showing a first example of the circuit configuration of the auxiliary battery integrated type cellular phone cover of Fig. 7;
10 is a diagram showing a second example of the circuit configuration of the auxiliary battery integrated type mobile phone cover of Fig.

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

Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art, and the following embodiments may be modified in various other forms, The present invention is not limited to the following embodiments. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an," and "the" include plural forms unless the context clearly dictates otherwise. Also, "comprise" and / or "comprising" as used herein specify the presence of stated shapes, numbers, steps, operations, elements, elements, and / , But does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups. As used herein, the term "and / or" includes any and all combinations of any of the listed items.

Although the terms first, second, etc. are used herein to describe various elements, regions and / or regions, it should be understood that these elements, components, regions, layers and / Do. These terms do not imply any particular order, top, bottom, or top row, and are used only to distinguish one member, region, or region from another member, region, or region. Thus, the first member, region or region described below may refer to a second member, region or region without departing from the teachings of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing embodiments of the present invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, embodiments of the present invention should not be construed as limited to any particular shape of the regions illustrated herein, but should include variations in shape resulting from, for example, manufacture.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a rear view of a cellular phone incorporating a secondary battery integrated cellular phone cover of the present invention. FIG.

1 shows a back side of a cellular phone 10 such as a smart phone. More specifically, FIG. 1 shows a state in which the rear cover, which is basically mounted on the cellular phone 10, is detached. A battery 14 is inserted into the center of the rear surface of the mobile phone 10. The battery 14 is basically a battery provided when the mobile phone 10 is sold.

In addition, a separate terminal 16 for receiving external power is provided on the rear surface of the cellular phone 10. The terminal 16 may be a terminal for wireless charging, for example, designed in advance for expandability in manufacturing the cellular phone 10. The wireless charging terminal is provided on the assumption that the rear cover is replaced with a separate rear cover that supports wireless charging when the cellular phone 10 is manufactured and a separate rear cover for wireless charging is connected to the wireless charging terminal And a coil for wireless charging is provided.

If a separate rear cover for supporting wireless charging is mounted on the cellular phone 10 and then the cellular phone 10 is placed on a separate charging pad, wireless charging can be performed by a magnetic induction method.

A terminal 180 for NFC (Near Field Communication) is provided on the rear surface of the cellular phone 10. The NFC terminal 180 is connected to the NFC antenna to perform short-range wireless communication. When the NFC antenna is mounted on the base cover of the mobile phone 10 or the separately available cover, it is possible to perform near field wireless communication through the NFC antenna 180. The present invention utilizes the same terminal as the wireless charging terminal It does not need to carry the spare battery pack separately, but it covers the cover of the mobile phone with integral battery built into the back cover. 2 to 10, a description will be made of the auxiliary battery integrated type mobile phone cover according to the present invention.

FIG. 2 is a perspective view of a cover for an auxiliary battery integrated type mobile phone according to an embodiment of the present invention.

Referring to FIG. 2, the auxiliary battery integrated type mobile phone cover 100 according to an embodiment of the present invention includes a cover plate 110, an input terminal 120, an auxiliary battery 160, a PCB substrate, a sealing member 190).

The cover plate 110 may be made of a synthetic resin material such as plastic of a rigid material. Needless to say, it is needless to say that it may be made of other materials such as metal as long as it has a rigidity enough to form a cover body in addition to a synthetic resin material.

The input terminal 120 is a terminal for receiving external power, and generally a USB input terminal may be used. Various types of USB input terminals may exist depending on the pin type, and in recent years, Micro type USB input terminals have been widely used. Of course, even if it is not a USB input terminal, any type of input terminal may be used as long as it can receive external power. At this time, the USB input terminal may receive external power, but it may also be connected to a device such as a computer to transmit and receive data. The input terminal 120 is formed with a cable receiving portion 120a exposed to the lower side surface of the cellular phone cover 100. A cable such as an external USB cable is connected to the cable receiving portion 120a.

The auxiliary battery 160 is a battery installed to supply auxiliary power to the cellular phone 10 of Fig. The auxiliary battery 160 is formed in the form of a thin plate, and is attached to the upper part of the inner surface of the cell phone cover 100 which is detachably attached to the rear surface of the cell phone 10. As the auxiliary battery 160, various kinds of batteries can be used, and examples thereof include a lithium polymer battery.

The PCB substrate is provided with an auxiliary battery charging circuit portion 140, a boosting circuit portion 170, and an output terminal 180.

The auxiliary battery charging circuit unit 140 receives external power applied to the input terminal 120 and charges the auxiliary battery 160.

The booster circuit unit 170 boosts the output voltage of the auxiliary battery 160 to the rated voltage of the cellular phone 10. Generally, a cell phone such as a smart phone needs a voltage of about 5V, but the output voltage of the auxiliary battery 160 is about 3.8V, so that the voltage is increased to 5V. In general, a DC / DC converter may be used as the voltage-boosting circuit unit 170. [

The output terminal 180 is a terminal arranged to transmit the power generated from the auxiliary battery 160 to the cellular phone 10. [ Specifically, one end of the output terminal 180 is connected to the output terminal of the booster circuit portion 170, and the other end, that is, the terminal electrode 180a is connected to the terminal 16 of the cellular phone 10 of Fig. That is, the terminal electrode 180a is formed in a shape in which two electrodes are protruded. The terminal 16 of the cellular phone 10 is formed in the shape of a hole, and the terminal electrode 180a is inserted into the terminal 16 And has an electrically connected structure.

3 is a side sectional view of the auxiliary battery integrated type cellular phone cover of Fig.

3 is a side sectional view of the cellular phone cover 100 of FIG. 2 viewed from the right side, and the illustration of the voltage-raising circuit portion 170 is omitted.

3, a cover plate 110 constituting the body of the mobile phone cover 100 is disposed at the bottom of the mobile phone 100, and an input terminal 120, an auxiliary battery 160, a charging circuit 140, The step-up circuit unit 170, and the output terminal 180 are mounted.

A sealing member 190 for sealing these configurations is covered on the upper portion of the input terminal 120, the auxiliary battery charging circuit portion 140, the auxiliary battery 160, and the output terminal 180. The sealing member 190 is formed of a synthetic resin material and the input terminal 120, the auxiliary battery charging circuit 140, the auxiliary battery 160, and the output terminal 180 are exposed to the user of the mobile phone cover 100 And fixes the structures more stably.

2, a cable receiving portion 120a is formed in the input terminal 120. The cable receiving portion 120a is formed on the side of the cover plate 110 such that the cable receiving portion 120a is exposed on the side surface of the cover plate 110, A hole is formed in the cover plate 110.

A terminal electrode 180a is formed on the output terminal 180. The terminal electrode 180a is an electrode to be connected to the terminal 16 of the cell phone 10. The terminal electrode 180a penetrates through the sealing member 190, 100, respectively.

Fig. 4 is a diagram showing a first example of the circuit configuration of the auxiliary battery integrated type mobile phone cover of Fig. 2;

4, external power is applied to the input terminal 120, and the auxiliary battery charging circuit unit 140 charges the auxiliary battery 160 by the applied external power. The boosting circuit unit 170 charges the auxiliary battery 160 The output voltage of the battery 160 is stepped up to be transferred to the output terminal 180.

At this time, the external power source may be applied by the USB cable, and the output terminal 180 may be connected to the terminal 16 formed on the rear surface of the cellular phone 10. As described above, the terminal 16 is a terminal provided in advance in manufacturing the cellular phone 10 for expandability, and may be a wireless charging terminal.

Specifically, the output terminal of the input terminal 120 is connected to the input terminal of the auxiliary battery charging circuit unit 140, and transfers the external power to the auxiliary battery charging circuit unit 140. The output terminal of the auxiliary battery charging circuit unit 140 is connected to the auxiliary battery 160 so that the auxiliary battery charging circuit unit 140 can charge the auxiliary battery 160 using an external power source.

The booster circuit unit 170 is connected between the output terminal of the auxiliary battery 160 and the input terminal of the output terminal 180 so as to boost the output voltage of the auxiliary battery 160 and transmit the boosted voltage to the cellular phone.

In the case of having the above circuit configuration, the auxiliary battery integrated type mobile phone cover 100 according to an embodiment of the present invention preferentially charges the battery of the mobile phone through the output terminal 180 using an external power source, 180) of the auxiliary battery 160. The auxiliary battery 160 may be charged with power other than the power transmitted to the auxiliary battery 160. [ At this time, the power value of the external power supplied to the input terminal may have a value of the maximum input power plus a value of the power required by the cellular phone and a value of the power required by the auxiliary battery.

For example, if the cell phone requires a current of about 640 mA while charging and the secondary battery 160 requires a current of 1 A, the maximum value of the current supplied from the external power supply may have a value of 1650 mA of current . That is, when a current of 1650 mA is inputted to the input terminal 120, a current of 650 mA is branched toward the output terminal 180, and the current of the remaining 1A is branched to the auxiliary battery 160, At the same time, it is possible to charge at the maximum capacity. This is because a direct circuit connection is established between the input terminal 120 and the output terminal 180 so that power supplied to the input terminal 120 can be diverted toward the output terminal 180.

Of course, when a current value of less than 1650 mA is input to the input terminal 120, for example, a current of 1000 mA is input, a current of 650 mA is branched toward the output terminal 180, And may be used to charge the battery 160.

Fig. 5 is a diagram showing a second example of the circuit configuration of the auxiliary battery integrated type cellular phone cover of Fig. 2;

The second example of the circuit configuration of FIG. 5 is different from the circuit configuration of FIG. 4 in that the input terminal 120 is not directly connected to the output terminal 180 but connected only through the auxiliary battery charging circuit unit 140, I have. Therefore, the roles of the remaining components are similar to those in FIG. 4, so only the operation with the difference will be described.

5, the battery of the cellular phone is preferentially charged through the output terminal 180 by using an external power supply, and the auxiliary battery 160 is charged with the remaining power excluding the power transmitted to the output terminal 180 of the external power. The power value of the external power supplied to the input terminal 120 may be calculated by adding the value of the power required by the cellular phone and the value of the power required by the auxiliary battery to the value of the maximum input power A large value can be a value of the maximum input power.

That is, in the circuit of FIG. 5, when the cellular phone requires a current of about 640 mA at the time of charging and the auxiliary battery 160 requires a current of 1A, the current that can be supplied to the input terminal 120 at the maximum is 1A . Accordingly, when a current of 1A is supplied to the input terminal 120, the output terminal 180 preferentially consumes a current of 650 mA, and the auxiliary battery 160 charges the remaining 350 mA. Therefore, in this case, the charging time of the auxiliary battery 160 may be somewhat longer than the rated charging time.

4 and 5, the input terminal 120 and the output terminal 180 may have a structure in which they are directly connected to each other or may have a structure in which they are cut off, Of course it is.

FIG. 6 is a graph showing changes in voltage with time of the auxiliary battery and the cell phone battery when the auxiliary battery integrated type mobile phone cover of FIG. 2 is mounted on the mobile phone.

Referring to FIG. 6, the voltage of the auxiliary battery is buffered to maintain an initial voltage of 4.35 V, maintains a constant voltage of 3.8 V for a predetermined period after the initial voltage drop, and then gradually discharges from time t1 And is completely discharged at the time t2.

On the other hand, the cell phone battery voltage is buffered to maintain the voltage of 4.35V. Since the auxiliary battery voltage is not discharged until t2, the voltage of the cell phone battery maintains the buffer state. After t2 time, After the voltage drop has been maintained, the voltage starts to discharge after t3 and eventually becomes fully discharged.

That is, when the mobile phone 10 is mounted with the auxiliary battery integrated type mobile phone cover 100 according to the present invention, since the mobile phone battery maintains a charging state of almost 100 pros until the auxiliary battery 160 is discharged, It is possible to feel that the usage time of the actual mobile phone 10 increases dramatically. In addition, since the mobile phone cover 100 is only required to be mounted in place of the rear cover of the mobile phone 10, the inconvenience of purchasing a separate auxiliary battery pack and carrying it is eliminated.

FIG. 7 is a perspective view of a cover for an auxiliary battery integrated type mobile phone according to another embodiment of the present invention.

FIG. 7 shows an embodiment in which a wireless charging circuit and a wireless charging coil are further added to the auxiliary battery integrated type mobile phone cover 100 according to the embodiment of FIG.

Referring to FIG. 7, the auxiliary battery integrated type mobile phone cover 200 according to another exemplary embodiment of the present invention includes a cover plate 210, an input terminal 220, an auxiliary battery 260, A PCB board on which an NFC terminal 285 is mounted and a power supply unit 250 connected to the power charging unit 230 and the auxiliary battery charging circuit unit 240. The boosting circuit unit 270 has an output terminal 280, And a sealing member (290).

The cover plate 210, the input terminal 220, the auxiliary battery charging circuit portion 240, the auxiliary battery 260, the booster circuit portion 270, the output terminal 280 and the sealing member 290 are similar to the embodiment of FIG. 2 Since only the reference numerals are different, a detailed description thereof will be omitted from the description of FIG.

The power receiving unit 250 will be described first with the configuration added in the embodiment of FIG. A wireless charging coil 250 is disposed at the center of the power receiving unit 250 and an NFC antenna 250b is disposed at an edge surrounding the wireless charging coil 250a.

The wireless charging coil 250a serves as a secondary coil used in the contactless charging system. The wireless charging coil 250a is formed to have a thin thickness for miniaturization of the cellular phone cover 200 and has a structure in which coils are arranged in a circular shape. The wireless charging coil 250a may be formed on a PCB substrate by a technique such as etching on a synthetic resin material so as to be thinned.

The NFC antenna 250b is electrically connected to the NFC terminal 285 and performs short-range wireless communication. The protruded terminal electrode 285a of the NFC terminal 285 is coupled to the terminal 18 for NFC of the cellular phone 10 of Fig.

The wireless charging circuit unit 230 serves to charge the battery of the cellular phone 10 or the auxiliary battery 260 using the magnetic induction voltage applied to the wireless charging coil 250a.

8 is a side sectional view of the auxiliary battery integrated type cellular phone cover of Fig. 7;

8, the configuration is the same except that the power receiving unit 250, the wireless charging circuit unit 230, and the NFC terminal 285 are added, as compared with FIG. 3. Therefore, The description of FIG. 3 is hereby incorporated by reference.

An input terminal 220 is disposed on the leftmost side of the inner surface of the cover plate 210 and a power receiving unit 250 is disposed on the cover plate 210 on the right side of the input terminal 220. [ And an auxiliary battery 260 is disposed on the power receiving unit 250. A PCB substrate is disposed on the right side of the upper portion of the inner surface of the cover plate 210 and an auxiliary battery charging circuit portion 240, a booster circuit portion 270 and a wireless charging terminal 280 are disposed thereon. For convenience of illustration, the illustration of the wireless charging circuit portion 230 and the NFC terminal 285 is omitted.

However, the configuration of FIG. 8 is only an embodiment, and it goes without saying that the arrangement of the configuration of FIG. 8 may be variably performed.

Fig. 9 is a diagram showing a first example of the circuit configuration of the auxiliary battery integrated type cellular phone cover of Fig. 7;

Referring to FIG. 9, an external power source is applied to the input terminal 220, and the battery of the mobile phone connected through the auxiliary battery 260 or the output terminal 280 is charged.

The auxiliary battery 260 charges the auxiliary battery 260 based on an external power source applied to the input terminal 220. The boosting circuit unit 270 boosts the output voltage of the auxiliary battery 260 and outputs the output voltage to the output terminal 280. [ .

The wireless charging circuit unit 230 is connected to the auxiliary battery 260 or the battery of the mobile phone based on the magnetic induction voltage applied to the wireless charging coil 250a through magnetic coupling with the primary coil of the wireless charging pad As shown in FIG.

At this time, the wireless charging circuit unit 230 can supply the magnetic induction voltage to the output terminal 280 to charge the battery of the mobile phone, and the self induction voltage can be transferred to the auxiliary battery 260 for charging. At this time, when charging the auxiliary battery 260, the wireless charging circuit 230 transmits a control command to the auxiliary battery charging circuit 240 to charge the auxiliary battery 260, Can be charged.

At this time, the NFC antenna 250b is connected to the NFC terminal 285 through the electric wiring, and the NFC terminal 285 is coupled to the wireless charging terminal 18 of FIG. 1 to transmit the antenna signal sensed from the outside .

In other words, the auxiliary battery integrated type mobile phone cover 200 according to another embodiment of the present invention is connected to the terminal 16 formed on the rear surface of the mobile phone 10 and charges the battery of the mobile phone 10 using the auxiliary battery 260 It is possible to charge the battery of the mobile phone 10 or the auxiliary battery 250 by using the magnetic induction voltage applied to the wireless charging coil 250a.

The output terminal of the input terminal 220 is connected to the input terminal of the auxiliary battery charging circuit portion 240 and the input terminal of the output terminal 280 so that external power is supplied to one of the auxiliary battery charging circuit portion 240 and the output terminal 280 Can be delivered to both.

The output terminal of the auxiliary battery charging circuit unit 240 is connected to the auxiliary battery 260 so that the auxiliary battery charging circuit unit 240 charges the auxiliary battery 260 using the external power supply. And the input terminal of the output terminal 280 to boost the output voltage of the auxiliary battery 260 and deliver it to the cellular phone.

The wireless charging coil 250a is connected to the wireless charging circuit unit 230 and the output terminal of the wireless charging circuit unit 230 is connected to the input terminal of the auxiliary battery charging circuit unit 240 and the input terminal of the output terminal 280. [

The mobile phone cover 200 according to the above-described configuration preferentially charges the battery of the mobile phone through the output terminal 280 using an external power source or an inductive power, and supplies power to the output terminal of the external power source or the inductive power The external power source or the inductive power may have a value of a maximum value of the power required by the cellular phone and a value of the power required by the auxiliary battery 260 have.

4 except that the supplied power may be an inductive power as well as an external power supply, so that further explanation is omitted.

10 is a diagram showing a second example of the circuit configuration of the auxiliary battery integrated type mobile phone cover of Fig.

10, since the configuration of FIG. 10 is the same as that of FIG. 4 except that a wireless charging circuit unit 230 and a wireless charging coil 250a are added to the configuration of FIG. 4, redundant description will be omitted. 9, there is a difference in that the input terminal 220 and the output terminal 280 are not directly connected to each other, which is the same as that described in the description of FIG. 9, and thus description thereof will be omitted.

Power may be supplied to the auxiliary battery 260 or the output terminal 280 through the induction power applied from the wireless charging coil 250a in addition to the external power input through the input terminal 220 in FIG. The value of the external power supplied to the input terminal 220 or the value of the inductive power supplied to the wireless charging circuit unit 230 as shown in FIG. 5 is a value of the power required by the auxiliary battery 260, Of the value of the maximum input power. Although the auxiliary battery integrated type cover 200 of the present invention is described as being mounted in place of the basic rear cover of the cellular phone in the above embodiment, Possible is obvious.

The embodiments of the present invention have been described with reference to the drawings. It is to be understood, however, that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It will be possible to implement other embodiments, and therefore the true scope of protection of the present invention should be determined by the technical scope of the appended claims.

100: All-in-one battery cover
110: Cover plate
120: input terminal
140: auxiliary battery charging circuit part
160: auxiliary battery
170:
180: Output terminal
190: sealing member

Claims (22)

delete delete delete delete delete delete delete delete delete A cover plate detachably attached to a rear surface of the mobile phone to protect the rear surface of the mobile phone;
An auxiliary battery disposed above the inner surface of the cover plate to be detachably attached to the cell phone;
An input terminal disposed on the inner surface to receive external power;
An auxiliary battery charging circuit unit disposed above the inner surface to charge the auxiliary battery using external power supplied to the input terminal;
A step-up circuit unit for stepping up the output voltage of the auxiliary battery to a rated voltage of the mobile phone; And
And an output terminal disposed above the inner surface to supply power of the auxiliary battery to the cellular phone,
Wherein the output terminal is formed such that one end thereof is connected to the output terminal of the booster circuit portion and the other end is connected to a wireless charging terminal formed on the rear surface of the cellular phone main body,
An output terminal of the input terminal is connected to an input terminal of the auxiliary battery charging circuit unit to transmit the external power supply to the auxiliary battery charging circuit unit,
An output terminal of the auxiliary battery charging circuit unit is connected to the auxiliary battery so that the auxiliary battery charging circuit unit charges the auxiliary battery using the external power supply,
Wherein the boosting circuit unit is connected between an output terminal of the auxiliary battery and an input terminal of the output terminal so as to boost the output voltage of the auxiliary battery and deliver the boosted output voltage to the cellular phone,
Wherein the auxiliary battery is configured to charge the battery of the mobile phone through the output terminal by using the external power source and to charge the auxiliary battery with power other than the power transmitted to the output terminal of the external power source,
Wherein the power value of the external power supplied to the input terminal of the input terminal has a maximum value of a value of a power required by the cellular phone and a value of a power required by the auxiliary battery, Battery-integrated phone cover.
A cover plate detachably attached to a rear surface of the mobile phone to protect the rear surface of the mobile phone;
An auxiliary battery disposed above the inner surface of the cover plate to be detachably attached to the cell phone;
An input terminal disposed on the inner surface to receive external power;
An auxiliary battery charging circuit unit disposed above the inner surface to charge the auxiliary battery using external power supplied to the input terminal;
A step-up circuit unit for stepping up the output voltage of the auxiliary battery to a rated voltage of the mobile phone; And
And an output terminal disposed above the inner surface to supply power of the auxiliary battery to the cellular phone,
Wherein the output terminal is formed such that one end thereof is connected to the output terminal of the booster circuit portion and the other end is connected to a wireless charging terminal formed on the rear surface of the cellular phone main body,
An output terminal of the input terminal is connected to an input terminal of the auxiliary battery charging circuit section and an input terminal of the output terminal to transmit the external power supply to one or both of the auxiliary battery charging circuit section and the output terminal,
An output terminal of the auxiliary battery charging circuit unit is connected to the auxiliary battery so that the auxiliary battery charging circuit unit charges the auxiliary battery using the external power supply,
Wherein the boosting circuit unit is connected between an output terminal of the auxiliary battery and an input terminal of the output terminal so as to boost the output voltage of the auxiliary battery and deliver the boosted output voltage to the cellular phone,
Wherein the auxiliary battery is configured to charge the battery of the mobile phone through the output terminal by using the external power source and to charge the auxiliary battery with power other than the power transmitted to the output terminal of the external power source,
Wherein the power value of the external power supply supplied to the input terminal of the input terminal has a value of a maximum input power plus a value of a power required by the cellular phone and a value of a power required by the auxiliary battery, Battery-integrated phone cover.
delete delete delete delete delete delete delete delete delete A cover plate detachably attached to a rear surface of the mobile phone to protect the rear surface of the mobile phone;
An auxiliary battery disposed above the inner surface of the cover plate to be detachably attached to the cell phone;
An input terminal disposed on the inner surface to receive external power;
An auxiliary battery charging circuit unit disposed above the inner surface to charge the auxiliary battery using external power supplied to the input terminal;
A step-up circuit unit for stepping up the output voltage of the auxiliary battery to a rated voltage of the mobile phone;
An output terminal disposed above the inner surface to supply electric power of the auxiliary battery to the cellular phone;
A wireless charging coil disposed above the inner surface and configured to magnetically couple with a coil of an external solid state charging device; And
And a wireless charging circuit unit charging the battery of the mobile phone or the auxiliary battery using induction power induced in the wireless charging coil,
Wherein the output terminal is formed such that one end thereof is connected to the output terminal of the booster circuit portion and the other end is connected to a wireless charging terminal formed on the rear surface of the cellular phone main body,
An output terminal of the input terminal is connected to an input terminal of the auxiliary battery charging circuit unit to transmit the external power supply to the auxiliary battery charging circuit unit,
An output terminal of the auxiliary battery charging circuit unit is connected to the auxiliary battery so that the auxiliary battery charging circuit unit charges the auxiliary battery using the external power supply,
The boost circuit unit is connected between the output terminal of the auxiliary battery and the input terminal of the output terminal to boost the output voltage of the auxiliary battery and deliver it to the cellular phone,
Wherein the wireless charging coil is connected to the wireless charging circuit portion and the output terminal of the wireless charging circuit portion is connected to the input terminal of the auxiliary battery charging circuit portion,
The battery of the mobile phone is first charged through the output terminal using the external power or the induction power and the auxiliary battery is charged with the remaining power of the external power or the induction power except the power transmitted to the output terminal Respectively,
Wherein the power value of the external power source or the inductive power has a value of a maximum input power among a value of a power required by a cellular phone and a value of a power required by the auxiliary battery, .
A cover plate detachably attached to a rear surface of the mobile phone to protect the rear surface of the mobile phone;
An auxiliary battery disposed above the inner surface of the cover plate to be detachably attached to the cell phone;
An input terminal disposed on the inner surface to receive external power;
An auxiliary battery charging circuit unit disposed above the inner surface to charge the auxiliary battery using external power supplied to the input terminal;
A step-up circuit unit for stepping up the output voltage of the auxiliary battery to a rated voltage of the mobile phone;
An output terminal disposed above the inner surface to supply electric power of the auxiliary battery to the cellular phone;
A wireless charging coil disposed above the inner surface and configured to magnetically couple with a coil of an external solid state charging device; And
And a wireless charging circuit unit charging the battery of the mobile phone or the auxiliary battery using induction power induced in the wireless charging coil,
Wherein the output terminal is formed such that one end thereof is connected to the output terminal of the booster circuit portion and the other end is connected to a wireless charging terminal formed on the rear surface of the cellular phone main body,
An output terminal of the input terminal is connected to an input terminal of the auxiliary battery charging circuit section and an input terminal of the output terminal to transmit the external power supply to one or both of the auxiliary battery charging circuit section and the output terminal,
An output terminal of the auxiliary battery charging circuit unit is connected to the auxiliary battery so that the auxiliary battery charging circuit unit charges the auxiliary battery using the external power supply,
The boost circuit unit is connected between the output terminal of the auxiliary battery and the input terminal of the output terminal to boost the output voltage of the auxiliary battery and deliver it to the cellular phone,
Wherein the wireless charging coil is connected to the wireless charging circuit unit and the output terminal of the wireless charging circuit unit is connected to the input terminal of the auxiliary battery charging circuit unit and the input terminal of the output terminal,
The battery of the mobile phone is first charged through the output terminal using the external power or the induction power and the auxiliary battery is charged with the remaining power of the external power or the induction power except the power transmitted to the output terminal Respectively,
Wherein the power value of the external power supply or the inductive power has a value of a maximum input power plus a value of a power required by the cellular phone and a value of a power required by the auxiliary battery. .

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