CN203761089U - Charging system - Google Patents

Charging system Download PDF

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Publication number
CN203761089U
CN203761089U CN201420056087.XU CN201420056087U CN203761089U CN 203761089 U CN203761089 U CN 203761089U CN 201420056087 U CN201420056087 U CN 201420056087U CN 203761089 U CN203761089 U CN 203761089U
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CN
China
Prior art keywords
charging
power supply
battery core
resistance
usb interface
Prior art date
Application number
CN201420056087.XU
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Chinese (zh)
Inventor
张加亮
刘丰硕
陈彪
吴克伟
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广东欧珀移动通信有限公司
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Priority to CN201420056087.XU priority Critical patent/CN203761089U/en
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Publication of CN203761089U publication Critical patent/CN203761089U/en

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Abstract

The utility model is applicable to the field of mobile terminals and provides a charging system which comprises a charging adapter and a mobile terminal. The charging adapter comprises a second USB interface, and an adjusting circuit which is used for carrying out rectifying filtering on city electricity to acquire an original power supply signal, carrying out voltage adjusting on the original power supply signal, and outputting the power supply signal after voltage adjusting from a power supply signal output end. The mobile terminal comprises a first USB interface. A Pth first power supply line in the first USB interface and a Pth second power supply line in the second USB interface are in corresponding insertion joint. A Qth first ground line in the first USB interface and a Qth second ground line in the second USB interface are in corresponding insertion joint. P is greater than or equal to 2, and Q is greater than or equal to 2. Each first power supply line and a corresponding second power supply line are in insertion joint. At least two charging circuits can be provided, thus the charging system can support the charging of high current more than 3 amperes.

Description

Charging system

Technical field

The utility model belongs to field of mobile terminals, relates in particular to a kind of charging system.

Background technology

Along with the progress in epoch, the Internet and mobile radio communication provide the function application of magnanimity.User not only can use mobile terminal to carry out tradition application, for example: use smart mobile phone to answer or call; Meanwhile, user not only can use mobile terminal to carry out web page browsing, picture transmission, game etc.

When using mobile terminal to process thing, owing to using the frequency of mobile terminal to increase, a large amount of electric weight that consume mobile terminal battery core of meeting, thus need often to charge; Due to the quickening of rhythm of life, the urgent thing that especially happens suddenly is more and more, and user wishes to carry out large current charge to the battery core of mobile terminal.

Existing mobile terminal, use charging adapter charging often to adopt MICRO USB interface (to comprise the MICRO USB plug in charging adapter, also comprise the MICRO USB socket in mobile terminal) charging of pegging graft, because this MICRO USB interface only comprises: there is a power line, there is a ground wire, therefore existing MICRO USB interface can only be charged by a power line and a ground wire formation Yi road charge circuit, thereby can only the maximum charging current of supporting 3 amperes (A), therefore, charging rate is slow, loses time.

Utility model content

The purpose of this utility model is to provide a kind of charging system, to solve existing mobile terminal and existing charging adapter, adopt the charging of pegging graft of MICRO USB interface, because existing MICRO USB interface only can provide a charge circuit, cause the slow problem of charging rate.

The utility model provides charging system, comprises charging adapter and mobile terminal, and described charging adapter comprises:

Secondary USB interface, has P second source line, Q the second ground wire and N the second data wire, and P is more than or equal to 2, Q and is more than or equal to 2, N and is more than or equal to 1;

Circuit tuning, has power end, power supply signal output and earth signal output; The external civil power of power end, power supply signal output is all connected with P second source line, and earth signal output is all connected with Q the second ground wire; Described Circuit tuning, for civil power is carried out rectifying and wave-filtering and obtains original power supply signal, carries out voltage adjustment the power supply signal from power supply signal output output voltage is adjusted to original power supply signal;

Described mobile terminal comprises:

The first USB interface, has P the first power line, Q the first ground wire and N the first data wire; Individual the first power line of P in described the first USB interface and the corresponding grafting of P second source line in described secondary USB interface, individual the first ground wire of Q in described the first USB interface and Q the corresponding grafting of the second ground wire, the first data wire of the N in described the first USB interface and the corresponding grafting of the second data wire of the N in described secondary USB interface in described secondary USB interface.

Further, described mobile terminal also comprises:

The first controller, has collection terminal and the first data terminal, and its first data terminal is connected with one or more the first data wires in described the first USB interface; Described the first controller, for receive the magnitude of voltage of the described battery core of battery core connector output from collection terminal, sends the magnitude of voltage of described battery core from the first data terminal.

Further, described charging adapter also comprises:

Second controller, has control end and the 3rd data terminal, and its control end is connected with the controlled end of described Circuit tuning, and its 3rd data terminal is connected with one or more the second data wires in described secondary USB interface; Described second controller, for the magnitude of voltage of the battery core from the 3rd data terminal mobile terminal receive, by the magnitude of voltage of described battery core and the contrast of predeterminated voltage value, sends adjustment instruction according to comparing result from control end;

Described Circuit tuning, the adjustment instruction receiving specifically for basis is carried out voltage adjustment to original power supply signal and from power supply signal output, is exported the power supply signal of predetermined current value.

Further, described Circuit tuning also comprises current detection circuit, it detects output and is connected with the calibration terminal of described second controller, for passing through the current value of power supply signal described in detection resistance detection, and detected current value is sent to described second controller;

Wherein, described second controller, also, for according to the difference of described detected current value and described predetermined current value, sends calibration command to described Circuit tuning; Described Circuit tuning, also for re-starting voltage adjustment the power supply signal from power supply signal output output calibration according to described calibration command to described original power supply signal.

Further, described mobile terminal also comprises:

Switching circuit, comprise battery core end, charging end, the first controlled end and the second controlled end, its battery core end connects the positive pole of described battery core, the first power line of the first USB interface described in its charging termination, the first control end of the first controller described in the first controlled termination, the second control end of the first controller described in the second controlled termination; Described switching circuit, for when receiving the connection instruction of described the first controller transmission from the first controlled end, is communicated with charging end and battery core end so that described charging adapter charges to described battery core; When receiving the first open command of described the first controller transmission from the second controlled end, the connection that disconnects charging end and battery core end is charged to described battery core to stop described charging adapter.

Further, described mobile terminal also comprises:

Reverse-connection preventing circuit, there is hot end, cold end and control output end, the first power line of the first USB interface described in its high potential termination, the first ground wire of the first USB interface described in its electronegative potential termination, its control output end connects the 3rd controlled end of switching circuit, for export the second open command to described switching circuit when from described hot end access earth signal and from described cold end access power supply signal, so that being electrically connected to of described switching circuit disconnection charging end and battery core end.

Further, described switching circuit comprises: the second electric capacity, the 3rd electric capacity, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first Schottky diode, the second Schottky diode, the 3rd Schottky diode, NPN type triode and switch module;

The first end of described the second resistance, the second end of described switch module, the second end of the first end of described the second electric capacity and described the second resistance is the battery core end of described switching circuit respectively accordingly, charging end, the first controlled end, the second controlled end, the first end of described the 3rd resistance and the second end be the corresponding base stage that connects the second end and the described NPN type triode of described the second resistance respectively, the anode of described the 3rd Schottky diode and negative electrode connect respectively emitter and the ground of described NPN type triode accordingly, the anode of described the first Schottky diode and negative electrode connect respectively the first end of described the second resistance and the second end of described the second electric capacity accordingly, the first end of described the second Schottky diode and the second end connect respectively the second end of described the second electric capacity and the first end of described the 4th resistance accordingly, the first end of described the 3rd electric capacity and the second end connect respectively negative electrode and the ground of described the first Schottky diode accordingly, the first end of the 4th resistance and ground described in the first termination of described the 5th resistance, the collector electrode of described NPN type triode connects the second end of described the 4th resistance, the second end of described switch module and controlled end connect respectively the first end of described the second resistance and the second end of described the 4th resistance accordingly.

Further, described switch module comprises: the 3rd switch chip and the 4th switch chip;

The grid pin of the source electrode pin of the source electrode pin of described the 3rd switch chip, the 4th switch chip and the 4th switch chip be the second end, first end and the controlled end of described switch module respectively accordingly, and the grid pin of described the 3rd switch chip and drain electrode pin are respectively with the grid pin of described the 4th switch chip with drain that pin is corresponding to join.

Further, described reverse-connection preventing circuit comprises:

The 6th resistance, the first N-type metal-oxide-semiconductor and the second N-type metal-oxide-semiconductor;

The source electrode of the second end of the source electrode of described the first N-type metal-oxide-semiconductor, described the 6th resistance and described the second N-type metal-oxide-semiconductor is hot end, cold end and the control output end of described reverse-connection preventing circuit respectively accordingly, the grid of described the first N-type metal-oxide-semiconductor and drain electrode connect respectively grid and the drain electrode of described the second N-type metal-oxide-semiconductor accordingly, the grid of the first N-type metal-oxide-semiconductor described in the first termination of described the 6th resistance.

Further, described the first power line, described the first ground wire, described second source line and described the second ground wire all adopt phosphor bronze C7025 to make.

The beneficial effects of the utility model: obtain the first USB interface after existing MICRO USB socket is improved, obtain secondary USB interface after existing MICRO USB plug is improved; After the first USB interface and secondary USB interface grafting, because every first power line can be pegged graft with corresponding second source line, can at least provide two charge circuits; Thereby when using the first USB interface and secondary USB interface to peg graft charging, can support 3 amperes of large current charges above, also can realize a mobile terminal by large current delivery to another mobile terminal to drive this another mobile terminal work.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the utility model embodiment, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the composition structure chart of the charging system that provides of the utility model embodiment;

Fig. 2 is the cut-away view of the USB interface that provides of the utility model embodiment;

Fig. 3 is the charging circuit figure of mobile terminal in the charging system that provides of the utility model embodiment.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.For technical scheme described in the utility model is described, below by specific embodiment, describe.

It should be noted that, the charging adapter in the embodiment of the present invention comprises: power supply adaptor, charger, IPAD, smart mobile phone etc. can the terminal of out-put supply signal so that battery core (battery core of mobile terminal) is charged.

It should be noted that, the utility model embodiment provides the first universal serial bus (Universal SerialBus, USB) interface, and this first usb 1 is arranged on mobile terminal, can be used for the transmission of power supply signal; Meanwhile, also provide secondary USB interface 2, this secondary USB interface 2 is arranged on charging adapter.After the first usb 1 and secondary USB interface 2 pegged graft, every first power line in the first usb 1 and the corresponding grafting of every second source line in secondary USB interface 2, and then at least two-way charge circuit can be provided, realize large current charge more than 3A.

The composition structure of the charging system that the utility model embodiment shown in Fig. 1 provides, wherein Fig. 1 only shows the part relevant to utility model.Simultaneously, the internal structure of the first usb 1 shown in Fig. 2, it should be noted that, Fig. 2 is the first usb 1 in order to illustrate that the utility model embodiment provides only, thus only provided there are two power lines, the structural representation of two ground wires and three data lines.It should be noted that, the internal structure of the secondary USB interface 2 in charging adapter and the corresponding grafting of the internal structure of the first usb 1, for example every first power line in the first usb 1 and the corresponding grafting of every second source line in secondary USB interface 2, every first data wire in the first usb 1 and the corresponding grafting of every second data wire in secondary USB interface 2; Therefore, the utility model embodiment does not provide the structural representation of secondary USB interface 2.

Shown in Fig. 1 and Fig. 2, the charging system that the utility model embodiment provides, comprises charging adapter and mobile terminal, and described charging adapter comprises:

Secondary USB interface 2, has P second source line, Q the second ground wire and N the second data wire, and P is more than or equal to 2, Q and is more than or equal to 2, N and is more than or equal to 1;

Circuit tuning 3, has power end, power supply signal output and earth signal output; The external civil power of power end, power supply signal output is all connected with P second source line, earth signal output is all connected with Q the second ground wire, described Circuit tuning 3, for civil power being carried out to rectifying and wave-filtering and obtaining original power supply signal, carries out voltage adjustment the power supply signal from power supply signal output output voltage is adjusted to original power supply signal;

Described mobile terminal comprises:

The first usb 1, has P the first power line, Q the first ground wire and N the first data wire; Individual the first power line of P in described the first usb 1 and the corresponding grafting of P second source line in described secondary USB interface 2; Individual the first ground wire of Q in described the first usb 1 and Q the corresponding grafting of the second ground wire, the first data wire of the N in described the first usb 1 and the corresponding grafting of the second data wire of the N in described secondary USB interface 2 in described secondary USB interface 2.

In the present embodiment, in the time need to using charging adapter to charge to the battery core of mobile terminal, user can peg graft the first usb 1 and secondary USB interface 2, and then, individual the first power line of P in described the first usb 1 and the corresponding grafting of P second source line in described secondary USB interface 2, individual the first ground wire of Q in described the first usb 1 and Q the corresponding grafting of the second ground wire, the first data wire of the N in described the first usb 1 and the corresponding grafting of the second data wire of the N in described secondary USB interface 2 in described secondary USB interface 2.And then when battery core is charged, at least two charge circuits can be provided, and (number of charge circuit is: the minimum value in P or Q).The electric current that wherein each charge circuit can bear is at least the electric current of existing charge circuit (charge circuit that existing MCIRO USB interface provides), therefore, than existing MCIRO USB interface (charge circuit only providing), the first usb 1 that the utility model embodiment provides and secondary USB interface 2 can be supported larger charging current (3A or more than).

And then 3 pairs of civil powers that access from power end of Circuit tuning carry out, rectifying and wave-filtering, generating original power supply signal; Then, the voltage of original power supply signal is adjusted, the power supply signal after output voltage is adjusted, charges to the battery core of mobile terminal by this power supply signal, wherein can support 3A or above charging current.

Preferably, when the first usb 1 is made for to USB plug, secondary USB interface 2 is made for to USB socket.On the contrary, when secondary USB interface 2 is made for to USB plug, the first usb 1 is made for to USB socket.Like this, can guarantee the good grafting of the first usb 1 and secondary USB interface 2, comprise: guaranteed that Q the first ground wire in described the first usb 1 is connected with Q the good of the second ground wire in described secondary USB interface 2, guaranteed that N the first data wire in described the first usb 1 is connected with N the good of the second data wire in described secondary USB interface 2.

Preferably, because the first usb 1 and secondary USB interface 2 can bear large electric current (3A or more than), therefore, mobile terminal can also drive another mobile terminal (having secondary USB interface 2) work by the first usb 1.

In another embodiment of the utility model, described mobile terminal also comprises:

The first controller 6, has collection terminal and the first data terminal, and its first data terminal is connected with one or more the first data wires in described the first usb 1; Described the first controller 6, for receive the magnitude of voltage of the described battery core of battery core connector output from collection terminal, sends the magnitude of voltage of described battery core from the first data terminal.

Particularly, the electric weight of the battery core of battery core connector Real-time Collection mobile terminal (magnitude of voltage of battery core); Meanwhile, the first controller 6 receives the magnitude of voltage of the described battery core of battery core connector output in real time; And from the first data terminal, send out the magnitude of voltage of described battery core, with the magnitude of voltage that sends described battery core through the first usb 1 and secondary USB interface 2 to second controller 7.

In another embodiment of the utility model, described charging adapter also comprises:

Second controller 7, has control end and the 3rd data terminal, and its control end is connected with the controlled end of described Circuit tuning 3, and its 3rd data terminal is connected with one or more the second data wires in described secondary USB interface 2; Described second controller 7, for the magnitude of voltage of the battery core from the 3rd data terminal mobile terminal receive, by the magnitude of voltage of described battery core and the contrast of predeterminated voltage value, sends adjustment instruction according to comparing result from control end;

Described Circuit tuning 3, the adjustment instruction receiving specifically for basis is carried out voltage adjustment to original power supply signal and from power supply signal output, is exported the power supply signal of predetermined current value.

What wherein, according to reality, charging needed to set during described predeterminated voltage value; Set this predeterminated voltage value, specifically for: when the voltage of battery core reaches enough high, charging current is reduced to predetermined current value (current value below 3A), carries out low current charge (charging current below 3A).

In the present embodiment, second controller 7 is from the magnitude of voltage of the battery core of the 3rd data terminal mobile terminal receive.Then, if the magnitude of voltage of this battery core, lower than predeterminated voltage value, is not exported adjustment instruction; If the magnitude of voltage of this battery core is more than or equal to predeterminated voltage value, instruction is adjusted in output, and described Circuit tuning 3 is adjusted instruction according to this, and the current value of the power supply signal from the output of power supply signal output is reduced to predetermined current value.

In another embodiment of the utility model, described Circuit tuning 3 also comprises:

Current detection circuit 31, it detects output and is connected with the calibration terminal of described second controller 7, for passing through the current value of power supply signal described in detection resistance detection, and detected current value is sent to described second controller 7;

Described second controller 7, if be not also described predetermined current value for described detected current value, sends calibration command to described Circuit tuning 3;

Described Circuit tuning 3, also for re-starting voltage adjustment the power supply signal from power supply signal output output calibration according to described calibration command to described original power supply signal.

In the present embodiment, after the current value of the power supply signal from the output of power supply signal output being reduced to predetermined current value when Circuit tuning 3 according to this adjustment instruction, in order further to guarantee that Circuit tuning 3 is predetermined current value from the current value of the power supply signal of power supply signal output output, the detection resistance that current detection circuit 31 has by it detects in real time from the current value of the power supply signal of power supply signal output output, and current detection circuit 31 is sent to described second controller 7 in real time by detected current value then; And then when described detected current value is not described predetermined current value, second controller 7 sends calibration command to described Circuit tuning 3, the voltage of 3 pairs of described original power supply signals of Circuit tuning is readjusted, and the power supply signal (i.e. power supply signal calibration after) of output after readjusting, the current value of the power supply signal after progressively guaranteeing to readjust of take is predetermined current value.

In another embodiment of the utility model, described mobile terminal also comprises:

Switching circuit 4, comprise battery core end, charging end, the first controlled end and the second controlled end, its battery core end connects the positive pole of described battery core, the first power line of the first usb 1 described in its charging termination, the first control end of the first controller 6 described in the first controlled termination, the second control end of the first controller 6 described in the second controlled termination; Described switching circuit 4 is for being communicated with charging end and battery core end charge to described battery core with described charging adapter when receiving the connection instruction that described the first controller 6 sends from the first controlled end, when receive the connection that disconnects charging end and battery core end when the first paragraph of described the first controller 6 transmissions is opened instruction from the second controlled end, to stop described charging adapter, to described battery core, charges.

It should be noted that, the battery core connector that mobile terminal comprises, also for generate anodal activation signal when whether detection battery core positive pole contacts, when whether detection battery core negative pole contacts, generate negative pole activation signal, when detecting the electric weight of battery core, generate electric quantity signal, described anodal activation signal, described negative pole activation signal and described electric quantity signal are sent to described the first controller 6.

And then, the first controller 6 can judge that whether good contact battery core is anodal for the anodal charging contact of charging circuit of mobile terminal according to the described anodal activation signal receiving, according to the described negative pole activation signal receiving, be judged as the negative pole charging contact good contact battery core negative pole whether of the charging circuit of mobile terminal, and determine according to described electric quantity signal whether the voltage of described battery core surpasses voltage threshold.

If anodal charging contact detected, be good contact battery core positive pole, and negative pole charging contact is good contact battery core negative pole, and the voltage of battery core is lower than voltage threshold, the first controller 6 sends and is communicated with instructions to switching circuit 4.And then when receiving the connection instruction of described the first controller 6 transmissions from the first controlled end, described switching circuit 4 is communicated with charging end and battery core ends; Described charging adapter can charge to the battery core of mobile terminal by switching circuit 4.

If anodal charging contact detected and be good contact battery core positive pole not, and negative pole charging contact is good contact battery core negative pole not, and the voltage of battery core is higher than voltage threshold, the first controller 6 sends and is communicated with instruction to switching circuit 4, and the first controller 6 can send connection instruction first paragraph to switching circuit 4 in time and hold instruction.Then, switching circuit 4, when receiving first paragraph that described the first controller 6 sends from the second controlled end and open instruction, disconnects the connection of charging end and battery core end, to stop described charging adapter to the charge circuit of described battery core charging.

In another embodiment of the utility model, described mobile terminal also comprises:

Reverse-connection preventing circuit 5, there is hot end, cold end and control output end, the first power line of the first usb 1 described in its high potential termination, the first ground wire of the first usb 1 described in its electronegative potential termination, its control output end connects the 3rd controlled end of switching circuit 4, for when from described hot end access earth signal and from described cold end access power supply signal to described switching circuit 4 output the second open command, with being electrically connected to of described switching circuit 4 disconnection charging ends and battery core end.

In the present embodiment, in order to prevent when battery core is charged, from the positive pole of battery core, accessed earth signal, from the negative pole of battery core, accessed power supply signal simultaneously, therefore at hot end and cold end for example, to whether power supply signal and earth signal being connect instead to (the first usb 1 and secondary USB interface 2 reversal connections, thereby be earth signal from the signal of telecommunication of the first power line access of the first usb 1, while is power supply signal from the signal of telecommunication of the first ground wire access of the first usb 1) detect, thereby can guarantee that the signal of telecommunication accessing from the first power line of the first usb 1 is power supply signal, from the signal of telecommunication of the first ground wire access of the first usb 1, it is earth signal.

In addition, if be earth signal from the signal of telecommunication of the first power line access of the first usb 1, from the signal of telecommunication of the first ground wire access of the first usb 1, be power supply signal simultaneously, reverse-connection preventing circuit 5 can be to described switching circuit 4 output the second open command; Then, the timely disconnection of switching circuit 4 charging end is electrically connected to battery core end, to disconnect the charging of charging adapter to the battery core of mobile terminal.Like this, can carry out anti-reverse protection to the internal circuit of the battery core of mobile terminal and mobile terminal (comprising charging circuit).

Fig. 3 shows the physical circuit of the charging circuit that in the charging system that the utility model embodiment provides, mobile terminal has, and for convenience of description, only shows the part relevant to the utility model embodiment.

Wherein, preferably, described switching circuit 4 comprises: the second capacitor C 2, the 3rd capacitor C 3, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the first Schottky diode D11, the second Schottky diode D12, the 3rd Schottky diode D13, NPN type triode Q1 and switch module 41;

The first end of described the second resistance R 2, the second end of described switch module 41, the second end of the first end of described the second capacitor C 2 and described the second resistance R 2 is the battery core end of described switching circuit 4 respectively accordingly, charging end, the first controlled end and the second controlled end, the first end of described the 3rd resistance R 3 and the second end be the corresponding base stage that meets the second end and the described NPN type triode Q1 of described the second resistance R 2 respectively, the anode of described the 3rd Schottky diode D13 and negative electrode connect respectively emitter and the ground of described NPN type triode Q1 accordingly, the anode of described the first Schottky diode D11 and negative electrode connect respectively the first end of described the second resistance R 2 and the second end of described the second capacitor C 2 accordingly, the first end of described the second Schottky diode D12 and the second end connect respectively the second end of described the second capacitor C 2 and the first end of described the 4th resistance R 4 accordingly, the first end of described the 3rd capacitor C 3 and the second end connect respectively negative electrode and the ground of described Schottky diode D1 accordingly, the first end of the 4th resistance R 4 and ground described in the first termination of described the 5th resistance R 5, the collector electrode of described NPN type triode Q1 connects the second end of described the 4th resistance R 4, the second end of described switch module 41 and controlled end connect respectively the first end of described the second resistance R 2 and the second end of described the 4th resistance R 4 accordingly.

In concrete application, when receiving connection instruction (UNICOM's instruction of high potential) from the first controlled end, the controlled end of described switch module 41 also receives the signal of telecommunication of high potential, and then, the second end of described switch module 41 and first end electric connection, and then form charging end through switch module 41 electric pathway to battery core end, and then the power supply signal accessing from the first power line of the first usb 1 can charge through the battery core of 4 pairs of mobile terminals of switching circuit.

When receiving the first open command of high potential from the second controlled end, NPN type triode Q1 conducting, then the controlled end of described switch module 41 receives the signal of telecommunication of electronegative potential, being electrically connected between the second end of cut-off switch module 41 and first end, thereby disconnect charging end to the electric pathway of battery core end, stop the charging through the battery core of 4 pairs of mobile terminals of switching circuit.

Preferably, described switch module 41 comprises: the 3rd switch chip U3 and the 4th switch chip U4; The grid pin of the source electrode pin of the source electrode pin of described the 3rd switch chip U3, the 4th switch chip U4 and the 4th switch chip U4 be the second end, first end and the controlled end of described switch module 41 respectively accordingly, and the grid pin of described the 3rd switch chip U3 and drain electrode pin are respectively with the grid pin of described the 4th switch chip U4 with drain that pin is corresponding to join.

At the present embodiment, when the controlled end of switch module 41 receives the signal of telecommunication of high potential, the grid pin G4 of the grid pin G3 of the 3rd switch chip U3 and the 4th switch chip U4 also receives the signal of telecommunication of high potential simultaneously, and then the source electrode pin S3 of described the 3rd switch chip U3 electrically conducts with drain electrode pin D3, the source electrode pin S4 of described the 4th switch chip U4 and drain electrode pin D4 electrically conduct, and then the source electrode pin S4 of the source electrode pin S3 of the 3rd switch chip U3 and the 4th switch chip U4 forms electric pathway, the first end of switch module 41 and the second end electric connection.

On the contrary, when the controlled end of switch module 41 receives the signal of telecommunication of electronegative potential, the grid pin G4 of the grid pin G3 of the 3rd switch chip U3 and the 4th switch chip U4 also receives the signal of telecommunication of electronegative potential simultaneously, and then the source electrode pin S3 of described the 3rd switch chip U3 can not electrically conduct with drain electrode pin D3, the source electrode pin S4 of described the 4th switch chip U4 and drain electrode pin D4 can not electrically conduct, and then the source electrode pin S4 of the source electrode pin S3 of the 3rd switch chip U3 and the 4th switch chip U4 can not form electric pathway, the first end of switch module 41 and the second end do not conduct.And then can not be through the battery core charging of 4 pairs of mobile terminals of switching circuit from the power supply signal of high potential charging input end access.

Preferably, described reverse-connection preventing circuit 5 comprises:

The 6th resistance R 6, the first N-type metal-oxide-semiconductor Q2 and the second N-type metal-oxide-semiconductor Q3;

The source electrode of the second end of the source electrode of described the first N-type metal-oxide-semiconductor Q2, described the 6th resistance R 6 and described the second N-type metal-oxide-semiconductor Q3 is hot end, cold end and the control output end of described reverse-connection preventing circuit 5 respectively accordingly, the grid of described the first N-type metal-oxide-semiconductor Q2 and drain electrode connect respectively grid and the drain electrode of described the second N-type metal-oxide-semiconductor Q3 accordingly, the grid of the first N-type metal-oxide-semiconductor Q2 described in the first termination of described the 6th resistance R 6.

Particularly, when the hot end of described reverse-connection preventing circuit 5 has accessed earth signal, while having accessed power supply signal from cold end simultaneously, the first N-type metal-oxide-semiconductor Q2 and the equal conducting of the second N-type metal-oxide-semiconductor Q3, and then, the controlled end of switch module 41 has accessed the signal of telecommunication of electronegative potential, and the first end of switch module 41 and the second end can not form electric pathway, disconnects the charge circuit charging through the battery core of 4 pairs of mobile terminals of switching circuit from the power supply signal of high potential charging input end access.

In another embodiment of the utility model, described the first power line, described the first ground wire, described second source line and described the second ground wire all adopt phosphor bronze C7025 to make.

What deserves to be explained is, the power and ground of the existing MICRO USB interface for the battery core charging to mobile terminal all adopts conductance to make less than 20% metal copper foil.Yet all the first power lines that the first usb 1 of mobile terminal comprises and described the first ground wire all adopt conductance can reach 50% phosphor bronze C7025 and make.Correspondingly, all second source lines that the secondary USB interface 2 of charging adapter comprises and described the second ground wire all adopt conductance can reach 50% phosphor bronze C7025 and make.

Like this, therefore with respect to existing MICRO USB interface, the first usb 1 and secondary USB interface 2 that the utility model embodiment provides can be supported larger charging current.Thereby after the first usb 1 and secondary USB interface 2 pegged graft, charging adapter can carry out the charging (can support 3A and above charging current) of large electric current by secondary USB interface 2 and first usb 1 of pegging graft to the battery core of mobile terminal.

Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; make without departing from the concept of the premise utility some alternative or obvious modification that are equal to; and performance or purposes identical, all should be considered as belonging to the utility model by the definite scope of patent protection of submitted to claims.

Claims (10)

1. a charging system, comprises charging adapter and mobile terminal, it is characterized in that,
Described charging adapter comprises:
Secondary USB interface, has P second source line, Q the second ground wire and N the second data wire, and P is more than or equal to 2, Q and is more than or equal to 2, N and is more than or equal to 1;
Circuit tuning, has power end, power supply signal output and earth signal output; The external civil power of power end, power supply signal output is all connected with P second source line, and earth signal output is all connected with Q the second ground wire; Described Circuit tuning, for civil power is carried out rectifying and wave-filtering and obtains original power supply signal, carries out voltage adjustment the power supply signal from power supply signal output output voltage is adjusted to original power supply signal;
Described mobile terminal comprises:
The first USB interface, has P the first power line, Q the first ground wire and N the first data wire; Individual the first power line of P in described the first USB interface and the corresponding grafting of P second source line in described secondary USB interface, individual the first ground wire of Q in described the first USB interface and Q the corresponding grafting of the second ground wire, the first data wire of the N in described the first USB interface and the corresponding grafting of the second data wire of the N in described secondary USB interface in described secondary USB interface.
2. charging system as claimed in claim 1, is characterized in that, described mobile terminal also comprises:
The first controller, has collection terminal and the first data terminal, and its first data terminal is connected with one or more the first data wires in described the first USB interface; Described the first controller, for receive the magnitude of voltage of the described battery core of battery core connector output from collection terminal, sends the magnitude of voltage of described battery core from the first data terminal.
3. charging system as claimed in claim 2, is characterized in that, described charging adapter also comprises:
Second controller, has control end and the 3rd data terminal, and its control end is connected with the controlled end of described Circuit tuning, and its 3rd data terminal is connected with one or more the second data wires in described secondary USB interface; Described second controller, for the magnitude of voltage of the battery core from the 3rd data terminal mobile terminal receive, by the magnitude of voltage of described battery core and the contrast of predeterminated voltage value, sends adjustment instruction according to comparing result from control end;
Described Circuit tuning, the adjustment instruction receiving specifically for basis is carried out voltage adjustment to original power supply signal and from power supply signal output, is exported the power supply signal of predetermined current value.
4. charging system as claimed in claim 3, it is characterized in that, described Circuit tuning also comprises current detection circuit, it detects output and is connected with the calibration terminal of described second controller, be used for by the current value of power supply signal described in detection resistance detection, and detected current value is sent to described second controller;
Wherein, described second controller, also, for according to the difference of described detected current value and described predetermined current value, sends calibration command to described Circuit tuning; Described Circuit tuning, also for re-starting voltage adjustment the power supply signal from power supply signal output output calibration according to described calibration command to described original power supply signal.
5. charging system as claimed in claim 2, is characterized in that, described mobile terminal also comprises:
Switching circuit, comprise battery core end, charging end, the first controlled end and the second controlled end, its battery core end connects the positive pole of described battery core, the first power line of the first USB interface described in its charging termination, the first control end of the first controller described in the first controlled termination, the second control end of the first controller described in the second controlled termination; Described switching circuit, for when receiving the connection instruction of described the first controller transmission from the first controlled end, is communicated with charging end and battery core end so that described charging adapter charges to described battery core; When receiving the first open command of described the first controller transmission from the second controlled end, the connection that disconnects charging end and battery core end is charged to described battery core to stop described charging adapter.
6. charging system as claimed in claim 5, is characterized in that, described mobile terminal also comprises:
Reverse-connection preventing circuit, there is hot end, cold end and control output end, the first power line of the first USB interface described in its high potential termination, the first ground wire of the first USB interface described in its electronegative potential termination, its control output end connects the 3rd controlled end of switching circuit, for export the second open command to described switching circuit when from described hot end access earth signal and from described cold end access power supply signal, so that being electrically connected to of described switching circuit disconnection charging end and battery core end.
7. charging system as claimed in claim 5, it is characterized in that, described switching circuit comprises: the second electric capacity, the 3rd electric capacity, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first Schottky diode, the second Schottky diode, the 3rd Schottky diode, NPN type triode and switch module;
The first end of described the second resistance, the second end of described switch module, the second end of the first end of described the second electric capacity and described the second resistance is the battery core end of described switching circuit respectively accordingly, charging end, the first controlled end, the second controlled end, the first end of described the 3rd resistance and the second end be the corresponding base stage that connects the second end and the described NPN type triode of described the second resistance respectively, the anode of described the 3rd Schottky diode and negative electrode connect respectively emitter and the ground of described NPN type triode accordingly, the anode of described the first Schottky diode and negative electrode connect respectively the first end of described the second resistance and the second end of described the second electric capacity accordingly, the first end of described the second Schottky diode and the second end connect respectively the second end of described the second electric capacity and the first end of described the 4th resistance accordingly, the first end of described the 3rd electric capacity and the second end connect respectively negative electrode and the ground of described the first Schottky diode accordingly, the first end of the 4th resistance and ground described in the first termination of described the 5th resistance, the collector electrode of described NPN type triode connects the second end of described the 4th resistance, the second end of described switch module and controlled end connect respectively the first end of described the second resistance and the second end of described the 4th resistance accordingly.
8. charging system as claimed in claim 7, is characterized in that, described switch module comprises: the 3rd switch chip and the 4th switch chip;
The grid pin of the source electrode pin of the source electrode pin of described the 3rd switch chip, the 4th switch chip and the 4th switch chip be the second end, first end and the controlled end of described switch module respectively accordingly, and the grid pin of described the 3rd switch chip and drain electrode pin are respectively with the grid pin of described the 4th switch chip with drain that pin is corresponding to join.
9. charging system as claimed in claim 6, is characterized in that, described reverse-connection preventing circuit comprises:
The 6th resistance, the first N-type metal-oxide-semiconductor and the second N-type metal-oxide-semiconductor;
The source electrode of the second end of the source electrode of described the first N-type metal-oxide-semiconductor, described the 6th resistance and described the second N-type metal-oxide-semiconductor is hot end, cold end and the control output end of described reverse-connection preventing circuit respectively accordingly, the grid of described the first N-type metal-oxide-semiconductor and drain electrode connect respectively grid and the drain electrode of described the second N-type metal-oxide-semiconductor accordingly, the grid of the first N-type metal-oxide-semiconductor described in the first termination of described the 6th resistance.
10. charging system as claimed in claim 1, is characterized in that, described the first power line, described the first ground wire, described second source line and described the second ground wire all adopt phosphor bronze C7025 to make.
CN201420056087.XU 2014-01-28 2014-01-28 Charging system CN203761089U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103762690A (en) * 2014-01-28 2014-04-30 广东欧珀移动通信有限公司 Charging system
CN106129494A (en) * 2016-07-28 2016-11-16 广东欧珀移动通信有限公司 Battery and protection circuit plate thereof and electronic equipment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103762690A (en) * 2014-01-28 2014-04-30 广东欧珀移动通信有限公司 Charging system
WO2015113343A1 (en) * 2014-01-28 2015-08-06 广东欧珀移动通信有限公司 Charging system
CN103762690B (en) * 2014-01-28 2016-08-24 广东欧珀移动通信有限公司 Charging system
US9859742B2 (en) 2014-01-28 2018-01-02 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Charging system
US10153652B2 (en) 2014-01-28 2018-12-11 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Charging system
US10224734B2 (en) 2014-01-28 2019-03-05 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Charging system
CN106129494A (en) * 2016-07-28 2016-11-16 广东欧珀移动通信有限公司 Battery and protection circuit plate thereof and electronic equipment

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