CN103746420B - Mobile terminal wireless charging circuit - Google Patents
Mobile terminal wireless charging circuit Download PDFInfo
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- CN103746420B CN103746420B CN201310752423.4A CN201310752423A CN103746420B CN 103746420 B CN103746420 B CN 103746420B CN 201310752423 A CN201310752423 A CN 201310752423A CN 103746420 B CN103746420 B CN 103746420B
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Abstract
The invention discloses a kind of mobile terminal wireless charging circuit, including the radio source signal receiving terminal and charging module of circuit connection successively；The mobile terminal wireless charging circuit also includes voltage control module and voltage transformation module；The baseband chip and the output end connection voltage transformation module of the input connection mobile terminal of the voltage control module；The input of the voltage transformation module connects the radio source signal receiving terminal, and the output end of the voltage transformation module connects the charging module, and the control end of the voltage transformation module is connected with the voltage control module.The present invention can reduce consuming of the electric energy in charging module, reduce the caloric value of mobile terminal and save electric energy.
Description
Technical field
The present invention relates to telecommunications field, more particularly to a kind of mobile terminal wireless charging circuit.
Background technology
Mobile terminal wireless charging circuit of the prior art, as shown in figure 1, including wireless receiving end, charging module and
Current detection module；The circuit connection successively of the wireless receiving end, charging module, current detection module and battery；The charging
Module and current detection module are connected with the baseband chip circuitry phase.Its operation principle is as follows：The power supply that system will be exchanged
By being wirelessly sent to the wireless receiving end, the dc source that 5V is adjusted to after the reception processing of wireless receiving end is exported to hand
Machine.Usual battery is that 3.2-4.2V is interval to charge, then in the case where charging voltage is 5V, there is a big chunk energy ezpenditure
On charging module [（Usually charging voltage-cell voltage）× charging current] all form of thermal energy has consumed the consumption of this part
Dissipate.This mobile terminal wireless charging circuit of the prior art, not only energy utilization rate is low, and energy loss is serious and causes
Mobile terminal caloric value big problem.
The content of the invention
It is an object of the invention to provide a kind of mobile terminal wireless charging circuit.
Mobile terminal wireless charging circuit provided by the present invention includes that the radio source signal of circuit connection successively is received
End and charging module；The mobile terminal wireless charging circuit also includes voltage control module and voltage transformation module；The electricity
Press the baseband chip of the input connection mobile terminal of control module and output end connects the voltage transformation module；The voltage
The input of modular converter connects the radio source signal receiving terminal, is filled described in the output end connection of the voltage transformation module
Electric module, the control end of the voltage transformation module is connected with the voltage control module.
Mobile terminal wireless charging circuit provided by the present invention, by changing the output voltage of voltage transformation module, enters
And change the input voltage of charging module, the input voltage of the charging module is more adapted to the charging electricity of battery of mobile terminal
Pressure, so as to reduce consuming of the electric energy in charging module, reduces the caloric value of mobile terminal and saves electric energy.
Brief description of the drawings
Fig. 1 is the mobile terminal wireless charging circuit modular structure schematic diagram described in the embodiment of the present invention one；
Fig. 2 is the mobile terminal wireless charging circuit structure chart described in the embodiment of the present invention one；
Wherein：
100 radio source signal receiving terminals
The battery of 300 charging module 400
The voltage control module of 500 voltage transformation module 600
The detection module of 700 baseband chip 800
L1 inductance R1 first resistors
R2 second resistance R3 3rd resistors
The resistance of the 4th resistance R5 of R4 the 5th
The resistance of the 6th resistance R7 of R6 the 7th hinders
C1 the first electric capacity the second electric capacity of C2
The electric capacity J switching devices of C3 the 3rd
M1 the first current detecting the second current detectings of port M2 port
M3 charge controls enable signal output port TDC-DC voltage conversion chips
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As shown in figure 1, the present embodiment provides a kind of mobile terminal wireless charging circuit, including circuit connection successively is wireless
Power supply signal receiving terminal 100 and charging module 300；The mobile terminal wireless charging circuit also includes voltage control module 600
With voltage transformation module 500；The baseband chip 700 of the input connection mobile terminal of the voltage control module 600 and output
The end connection voltage transformation module 500；The input of the voltage transformation module 500 connects the radio source signal and receives
End 100, the output end of the voltage transformation module 500 connects the charging module 300, the control of the voltage transformation module 500
End processed is connected with the voltage control module 600.
It will be understood by those skilled in the art that the voltage control module 600 receives the change of the transmission of the baseband chip 700
Pressure output enables control signal, and enables the work that control signal controls the voltage transformation module 500 according to transformation output
Make state, change the output voltage of the voltage transformation module 500 with this, and then change the input voltage of charging module 300,
The input voltage of the charging module 300 more adapts to the charging voltage of battery of mobile terminal 400, so as to reduce electric energy charge
The consuming of module 300, reduces the caloric value of mobile terminal and saves electric energy.
Further, the mobile terminal wireless charging circuit that the present embodiment is provided, also including a detection module 800, is used for
Detect the charging voltage and charging current of battery of mobile terminal 400；The detection module 800 is connected to the base band core of mobile terminal
Between the output end of piece 700 and charging module 300.It will be understood by those skilled in the art that 800 pairs of charging moulds of the detection module
The charging voltage and charging current of the output end of block 300, i.e. battery 400 are detected, and testing result is fed back into the base
Microarray strip 700, baseband chip 700 sends transformation output and enables control according to the testing result to the voltage control module 600
Signal, the mobile terminal wireless charging circuit that this sample embodiment is provided automatically according to the charging voltage of battery 400 and can fill
Electric current controls the input voltage of charging module 300, the more accurate intelligence of control.
As shown in Fig. 2 the voltage transformation module 500 includes DC-DC voltage conversion chips T, inductance L1, the second electric capacity C2
With the 3rd electric capacity C3；The inductance L1 is electrically connected to the radio source signal receiving terminal 100 with the DC-DC voltage conversions
Between the first port SW of chip T；Described second electric capacity C2 one end connects the radio source signal receiving terminal 100 and the other end
Ground connection；The fifth port VOUT and the other end that described 3rd electric capacity C3 one end connects the DC-DC voltage conversion chips T are grounded.
The voltage control module 600 includes receiver board intelligent control chip, first resistor R1, second resistance R2 and the first electric capacity C1；
The receiver board intelligent control chip respectively with the 3rd port EN, the first resistor R1 of the DC-DC voltage conversion chips T
One end be connected；The other end of the first resistor R1 is connected to the 4th port FB of the DC-DC voltage conversion chips T
On；The equal one end of the second resistance R2 and the first electric capacity C1 connects the 4th port FB of the DC-DC voltage conversion chips T and another
One end is grounded.The physical circuit of the voltage transformation module 500 that the present embodiment is provided, using the DC-DC voltage conversion chips T
The 3rd port EN receive the transformation output that the voltage control module 600 sends and enable control signal, it is and defeated according to the transformation
Go out to enable the magnitude of voltage of control signal adjustment output signal and exported by the fifth port VOUT, so as to adjust charging module
300 input voltage, reduces consuming of the electric energy in charging module 300, reduces the caloric value of mobile terminal and saves electric energy.
DC-DC voltage conversion chip TDC-DC voltage conversion chip TDC-DC voltage conversion chip TDC-DC voltage conversion cores
Piece TDC-DC voltage conversion chip TDC-DC voltage conversion chip TDC-DC voltage conversion chip TDC-DC voltage conversion chips
TDC-DC voltage conversion chip TDC-DC voltage conversion chips T
As shown in Fig. 2 the charging module 300 includes a switching device J；The detection module 800 includes the 5th resistance
R5, the 6th resistance R6 and the 7th resistance resistance R7；The first port of the switching device J and the 3rd port short circuit；The derailing switch
4th port of part J connects the fifth port VOUT of the voltage transformation module 500；The fifth port of the switching device J, institute
The 6th port for stating switching device J connects charge control enable signal output part and the base of the baseband chip 700 respectively
First current detecting port M1 of microarray strip 700；Described 5th resistance R5 one end connect the 6th port of the switching device J and
The other end connects the second current detecting port M2 of the baseband chip 700；Described 6th resistance R6 one end connects the switch
It is grounded after 4th port of device J and other end connection the 7th resistance resistance R7.The detection module 800 can also include the
Three resistance R3 and the 4th resistance R4；One end connects the DC-DC voltages and turns after the 3rd resistor R3 and the 4th resistance R4 concatenations
The fifth port VOUT and the other end for changing chip T are grounded；The receiver board intelligent control chip is also connected to described including one
Output voltage detection port between three resistance R3 and the 4th resistance R4.It will be understood by those skilled in the art that the base band core
Piece 700 enables signal output port M3 and exports charging control signal by the charge control, so that the work of controlling switch device J
Make state, when the switching device J is conducting state, battery 400 can be charged；When the switching device J is closing
During state, then stop charging.In charging process, the baseband chip 700 is by the first current detecting port M1, second
Current detecting port M2 detects charging current and charging voltage, so as to be sent out to the voltage control module 600 according to detection case
Control signal is sent, the input voltage that charging module 300 is adjusted according to the real-time status for charging is achieved that, so as to reduce electric energy exist
The consuming of charging module 300, reduces the caloric value of mobile terminal and saves electric energy.
Communication bus and the circuit of the baseband chip 700 that the receiver board intelligent control chip passes through baseband chip 700
Connection.
The switching device is analog switch.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
Modified with to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (5)
1. a kind of mobile terminal wireless charging circuit, including the radio source signal receiving terminal (100) of circuit connection and fill successively
Electric module (300)；The mobile terminal wireless charging circuit also includes voltage control module (600) and voltage transformation module
(500)；The baseband chip (700) of the input connection mobile terminal of the voltage control module (600) and output end connection institute
State voltage transformation module (500)；The input of the voltage transformation module (500) connects the radio source signal receiving terminal
(100), the output end of the voltage transformation module (500) connects the charging module (300), the voltage transformation module
(500) control end is connected with the voltage control module (600)；The mobile terminal wireless charging circuit also includes an inspection
Survey module (800), charging voltage and charging current for detecting battery of mobile terminal (400)；The detection module (800) is even
It is connected between the output end of the baseband chip of mobile terminal (700) and charging module (300)；The voltage transformation module (500)
Including DC-DC voltage conversion chips T, inductance L1, the second electric capacity C2 and the 3rd electric capacity C3；The inductance L1 is electrically connected to described
Between radio source signal receiving terminal (100) and the first port SW of the DC-DC voltage conversion chips T；Second electric capacity
C2 one end connects the radio source signal receiving terminal (100) and the other end is grounded；3rd electric capacity C3 one end connection is described
Fifth port VOUT and the other end ground connection of DC-DC voltage conversion chips T；It is characterized in that：The voltage control module (600)
Including receiver board intelligent control chip, first resistor R1, second resistance R2 and the first electric capacity C1；The receiver board Based Intelligent Control core
Piece the 3rd port EN respectively with the DC-DC voltage conversion chips T, one end of the first resistor R1 are connected；Described
The other end of one resistance R1 is connected on the 4th port FB of the DC-DC voltage conversion chips T；The second resistance R2 and
The 4th port FB and the other end that the equal one end of one electric capacity C1 connects the DC-DC voltage conversion chips T are grounded.
2. mobile terminal wireless charging circuit as claimed in claim 1, it is characterised in that：The charging module (300) includes
One switching device J；The detection module (800) includes the 5th resistance R5, the 6th resistance R6 and the 7th resistance R7；The derailing switch
The first port of part J and the 3rd port short circuit；4th port of the switching device J connects the voltage transformation module (500)
Fifth port VOUT；The fifth port of the switching device J, the 6th port of the switching device J connect the base respectively
The charge control of microarray strip (700) enables the first current detecting port M1 of signal output part and the baseband chip (700)；Institute
State that the 5th resistance R5 one end connects the 6th port of the switching device J and the other end connects the of the baseband chip (700)
Two current detecting port M2；Described 6th resistance R6 one end connects the 4th port of the switching device J and other end connection institute
It is grounded after stating the 7th resistance R7.
3. mobile terminal wireless charging circuit as claimed in claim 2, it is characterised in that：The detection module (800) is also wrapped
Include 3rd resistor R3 and the 4th resistance R4；One end connects the DC-DC electricity after the 3rd resistor R3 and the 4th resistance R4 concatenations
The fifth port VOUT and the other end of pressure conversion chip T are grounded；The receiver board intelligent control chip is also connected to institute including one
State the output voltage detection port between 3rd resistor R3 and the 4th resistance R4.
4. mobile terminal wireless charging circuit as claimed any one in claims 1 to 3, it is characterised in that：Receiver board intelligence
Control chip is connected by the communication bus of baseband chip (700) with the baseband chip (700) circuit.
5. mobile terminal wireless charging circuit as claimed in claim 2 or claim 3, it is characterised in that：The switching device J is simulation
Switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752423.4A CN103746420B (en) | 2013-12-31 | 2013-12-31 | Mobile terminal wireless charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752423.4A CN103746420B (en) | 2013-12-31 | 2013-12-31 | Mobile terminal wireless charging circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103746420A CN103746420A (en) | 2014-04-23 |
| CN103746420B true CN103746420B (en) | 2017-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310752423.4A Active CN103746420B (en) | 2013-12-31 | 2013-12-31 | Mobile terminal wireless charging circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN103746420B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398209B (en) * | 2019-08-13 | 2023-01-03 | 北京小米移动软件有限公司 | Wireless charging device, system, control method, terminal device and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202333932U (en) * | 2011-11-18 | 2012-07-11 | 赵华 | ZIGBEE based energy-saving intelligent wireless charging device |
| CN102842948A (en) * | 2012-09-24 | 2012-12-26 | 上海华勤通讯技术有限公司 | Mobile terminal |
| CN202759261U (en) * | 2012-07-03 | 2013-02-27 | 东莞市中恒浩机电科技有限公司 | Wireless charging type mobile power supply |
| CN203660603U (en) * | 2013-12-31 | 2014-06-18 | 上海华勤通讯技术有限公司 | Wireless charging circuit for mobile terminal |
-
2013
- 2013-12-31 CN CN201310752423.4A patent/CN103746420B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202333932U (en) * | 2011-11-18 | 2012-07-11 | 赵华 | ZIGBEE based energy-saving intelligent wireless charging device |
| CN202759261U (en) * | 2012-07-03 | 2013-02-27 | 东莞市中恒浩机电科技有限公司 | Wireless charging type mobile power supply |
| CN102842948A (en) * | 2012-09-24 | 2012-12-26 | 上海华勤通讯技术有限公司 | Mobile terminal |
| CN203660603U (en) * | 2013-12-31 | 2014-06-18 | 上海华勤通讯技术有限公司 | Wireless charging circuit for mobile terminal |
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| Publication number | Publication date |
|---|---|
| CN103746420A (en) | 2014-04-23 |
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Address after: 201203 Shanghai city Pudong New Area Zhangjiang Keyuan Road No. 399 Building No. 1 Applicant after: HUAQIN TELECOM TECHNOLOGY Co.,Ltd. Address before: 201203 Shanghai city Pudong New Area Zhangjiang Keyuan Road No. 399 Building No. 1 Applicant before: SHANGHAI HUAQIN TELECOM TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 201203 Building 1, 399 Zhangyuan Road, Zhangjiang, Pudong New Area, Shanghai Patentee after: Huaqin Technology Co.,Ltd. Address before: 201203 Building 1, 399 Zhangyuan Road, Zhangjiang, Pudong New Area, Shanghai Patentee before: Huaqin Technology Co.,Ltd. Address after: 201203 Building 1, 399 Zhangyuan Road, Zhangjiang, Pudong New Area, Shanghai Patentee after: Huaqin Technology Co.,Ltd. Address before: 201203 Building 1, 399 Zhangyuan Road, Zhangjiang, Pudong New Area, Shanghai Patentee before: HUAQIN TELECOM TECHNOLOGY Co.,Ltd. |