CN103746420A - Mobile terminal wireless charging circuit - Google Patents
Mobile terminal wireless charging circuit Download PDFInfo
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- CN103746420A CN103746420A CN201310752423.4A CN201310752423A CN103746420A CN 103746420 A CN103746420 A CN 103746420A CN 201310752423 A CN201310752423 A CN 201310752423A CN 103746420 A CN103746420 A CN 103746420A
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Abstract
The invention discloses a mobile terminal wireless charging circuit, which comprises a wireless power supply signal receiving end and a charging module in sequential connection through a circuit, wherein the mobile terminal wireless charging circuit also comprises a voltage control module and a voltage conversion module, the input end of the voltage control module is connected with a base band chip of a mobile terminal, in addition, the output end of the voltage control module is connected with the voltage conversion module, the input end of the voltage conversion module is connected with the wireless power supply signal receiving end, the output end of the voltage conversion module is connected with the charging module, and the control end of the voltage conversion module is connected with the voltage control module. The mobile terminal wireless charging circuit has the advantages that the consumption of the electric energy at the charging module can be reduced, the heating quantity of the mobile terminal is reduced, and in addition, the electric energy is saved.
Description
Technical field
The present invention relates to telecommunications field, relate in particular 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, comprises wireless interface receiving end, charging module and current detection module; Described wireless interface receiving end, charging module, current detection module and battery successively circuit are connected; Described charging module is all connected with described baseband chip circuitry phase with current detection module.Its operation principle is as follows: system is by the power supply of interchange by being wirelessly sent to described wireless interface receiving end, and the DC power supply that is adjusted into 5V after wireless receiving end reception & disposal is exported to mobile phone.Conventionally battery is the interval charging of 3.2-4.2V, and so in the situation that charging voltage is 5V, this part consumes all heat energy form and dissipates in [(being generally charging voltage-cell voltage) * charging current] on charging module energy consumption greatly.This mobile terminal wireless charging circuit of the prior art, not only energy utilization rate is low, and energy loss is serious and caused the large problem of mobile terminal caloric value.
Summary of the invention
The object of this invention is to provide a kind of mobile terminal wireless charging circuit.
Mobile terminal wireless charging circuit provided by the present invention comprises radio source signal receiving end and the charging module that circuit connects successively; Described mobile terminal wireless charging circuit also comprises voltage control module and voltage transformation module; Baseband chip and output that the input of described voltage control module connects mobile terminal connect described voltage transformation module; The input of described voltage transformation module connects described radio source signal receiving end, and the output of described voltage transformation module connects described charging module, and the control end of described voltage transformation module is connected with described voltage control module.
Mobile terminal wireless charging circuit provided by the present invention, by changing the output voltage of voltage transformation module, and then the input voltage of change charging module, make the input voltage of described charging module more adapt to the charging voltage of battery of mobile terminal, thereby minimizing electric energy expends charging module, reduce the caloric value of mobile terminal and also save electric energy.
Accompanying drawing explanation
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 ends
300 charging module 400 batteries
500 voltage transformation module 600 voltage control module
700 baseband chip 800 detection modules
L1 inductance R1 the first resistance
R2 the second resistance R 3 the 3rd resistance
R4 the 4th resistance R 5 the 5th resistance
R6 the 6th resistance R 7 the 7th resistance resistance
C1 the first capacitor C 2 second electric capacity
C3 the 3rd electric capacity J switching device
M1 first current detecting port M2 the second current detecting port
Enable signal output port TDC-DC voltage transitions chip is controlled in M3 charging
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong 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, comprises circuit connects successively radio source signal receiving end 100 and charging module 300; Described mobile terminal wireless charging circuit also comprises voltage control module 600 and voltage transformation module 500; Baseband chip 700 and output that the input of described voltage control module 600 connects mobile terminal connect described voltage transformation module 500; The input of described voltage transformation module 500 connects described radio source signal receiving end 100, the output of described voltage transformation module 500 connects described charging module 300, and the control end of described voltage transformation module 500 is connected with described voltage control module 600.
It will be appreciated by those skilled in the art that, described voltage control module 600 receives the transformation output enable control signal that described baseband chip 700 sends, and according to described transformation output enable control signal, control the operating state of described voltage transformation module 500, with this, change the output voltage of described voltage transformation module 500, and then the input voltage of change charging module 300, the input voltage of described charging module 300 adapts to the charging voltage of battery of mobile terminal 400 more, thereby reduce electric energy expending at charging module 300, reduce the caloric value of mobile terminal and save electric energy.
Further, the mobile terminal wireless charging circuit that the present embodiment provides, also comprises a detection module 800, for detection of charging voltage and the charging current of battery of mobile terminal 400; Described detection module 800 is connected between the baseband chip 700 of mobile terminal and the output of charging module 300.It will be appreciated by those skilled in the art that, the output of 800 pairs of charging modules 300 of described detection module, the charging voltage and the charging current that are battery 400 detect, and testing result is fed back to described baseband chip 700, baseband chip 700 sends transformation output enable control signal according to this testing result to described voltage control module 600, the mobile terminal wireless charging circuit that the present embodiment provides like this, can be automatically according to the charging voltage of battery 400 and charging current, control the input voltage of charging module 300, control more accurately intelligence.
As shown in Figure 2, described voltage transformation module 500 comprises DC-DC voltage transitions chip T, inductance L 1, the second capacitor C 2 and the 3rd capacitor C 3; Described inductance L 1 circuit is connected between described radio source signal receiving end 100 and the first port SW of described DC-DC voltage transitions chip T; Described second capacitor C 2 one end connect described radio source signal receiving end 100 and other end ground connection; Described the 3rd capacitor C 3 one end connect five-port VOUT and the other end ground connection of described DC-DC voltage transitions chip T.Described voltage control module 600 comprises dash receiver intelligent control chip, the first resistance R 1, the second resistance R 2 and the first capacitor C 1; Described dash receiver intelligent control chip is connected with the 3rd port EN of described DC-DC voltage transitions chip T, one end of described the first resistance R 1 respectively; The other end of described the first resistance R 1 is connected on the 4th port FB of described DC-DC voltage transitions chip T; Described the second resistance R 2 is connected the 4th port FB and the other end ground connection of described DC-DC voltage transitions chip T with first equal one end of capacitor C 1.The physical circuit of the voltage transformation module 500 that the present embodiment provides, utilize the 3rd port EN of described DC-DC voltage transitions chip T to receive the transformation output enable control signal that described voltage control module 600 sends, and adjust the magnitude of voltage of output signal and export by described five-port VOUT according to this transformation output enable control signal, thereby regulate the input voltage of charging module 300, minimizing electric energy expends charging module 300, reduces the caloric value of mobile terminal and also saves electric energy.
DC-DC voltage transitions chip TDC-DC voltage transitions chip TDC-DC voltage transitions chip TDC-DC voltage transitions chip TDC-DC voltage transitions chip TDC-DC voltage transitions chip TDC-DC voltage transitions chip TDC-DC voltage transitions chip TDC-DC voltage transitions chip TDC-DC voltage transitions chip T
As shown in Figure 2, described charging module 300 comprises a switching device J; Described detection module 800 comprises the 5th resistance R 5, the 6th resistance R 6 and the 7th resistance resistance R7; The first port of described switching device J and the 3rd port short circuit; The 4th port of described switching device J connects the five-port VOUT of described voltage transformation module 500; The 6th port of the five-port of described switching device J, described switching device J connects respectively the charging control enable signal output of described baseband chip 700 and the first current detecting port M1 of described baseband chip 700; Described the 5th resistance R 5 one end connect the 6th port of described switching device J and the second current detecting port M2 that the other end connects described baseband chip 700; Described the 6th resistance R 6 one end connect the 4th port of described switching device J and the other end and connect ground connection after described the 7th resistance resistance R7.Described detection module 800 can also comprise the 3rd resistance R 3 and the 4th resistance R 4; Described the 3rd resistance R 3 is connected five-port VOUT and the other end ground connection of described DC-DC voltage transitions chip T with one end after the 4th resistance R 4 serial connections; Described dash receiver intelligent control chip also comprises that one is connected to the output voltage detection port between described the 3rd resistance R 3 and the 4th resistance R 4.It will be appreciated by those skilled in the art that, described baseband chip 700 is controlled enable signal output port M3 output charging control signal by described charging, thereby the operating state of control switch device J, when described switching device J is conducting state, can charge to battery 400; When described switching device J is closed condition, stop charging.In charging process, described baseband chip 700 detects charging current and charging voltage by described the first current detecting port M1, the second current detecting port M2, thereby transmit control signal to described voltage control module 600 according to detection case, just realized the input voltage of adjusting charging module 300 according to the real-time status of charging, thereby minimizing electric energy expends charging module 300, reduce the caloric value of mobile terminal and also save electric energy.
Described dash receiver intelligent control chip is connected with described baseband chip 700 circuit by the communication bus of baseband chip 700.
Described switching device is analog switch.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a mobile terminal wireless charging circuit, comprises circuit connects successively radio source signal receiving end (100) and charging module (300); It is characterized in that: described mobile terminal wireless charging circuit also comprises voltage control module (600) and voltage transformation module (500); Baseband chip (700) and output that the input of described voltage control module (600) connects mobile terminal connect described voltage transformation module (500); The input of described voltage transformation module (500) connects described radio source signal receiving end (100), the output of described voltage transformation module (500) connects described charging module (300), and the control end of described voltage transformation module (500) is connected with described voltage control module (600).
2. mobile terminal wireless charging circuit as claimed in claim 1, is characterized in that: described mobile terminal wireless charging circuit also comprises a detection module (800), for detection of charging voltage and the charging current of battery of mobile terminal (400); Described detection module (800) is connected between the baseband chip (700) of mobile terminal and the output of charging module (300).
3. mobile terminal wireless charging circuit as claimed in claim 2, is characterized in that: described voltage transformation module (500) comprises DC-DC voltage transitions chip (T), inductance L 1, the second capacitor C 2 and the 3rd capacitor C 3; Described inductance L 1 circuit is connected between described radio source signal receiving end (100) and first port (SW) of described DC-DC voltage transitions chip (T); Described the second electric capacity (C2) one end connects described radio source signal receiving end (100) and other end ground connection; Described the 3rd electric capacity (C3) one end connects five-port (VOUT) and the other end ground connection of described DC-DC voltage transitions chip (T).
4. mobile terminal wireless charging circuit as claimed in claim 3, is characterized in that: described voltage control module (600) comprises dash receiver intelligent control chip, the first resistance (R1), the second resistance (R2) and the first electric capacity (C1); Described dash receiver intelligent control chip is connected with the 3rd port (EN) of described DC-DC voltage transitions chip (T), one end of described the first resistance (R1) respectively; The other end of described the first resistance (R1) is connected on the 4th port (FB) of described DC-DC voltage transitions chip (T); Described the second resistance (R2) is connected the 4th port (FB) and other end ground connection of described DC-DC voltage transitions chip (T) with the equal one end of the first electric capacity (C1).
5. mobile terminal wireless charging circuit as claimed in claim 4, is characterized in that: described charging module (300) comprises a switching device (J); Described detection module (800) comprises the 5th resistance (R5), the 6th resistance (R6) and the 7th resistance resistance (R7); The first port of described switching device (J) and the 3rd port short circuit; The 4th port of described switching device (J) connects the five-port (VOUT) of described voltage transformation module (500); The five-port of described switching device (J), the 6th port of described switching device (J) connect respectively the charging control enable signal output of described baseband chip (700) and the first current detecting port (M1) of described baseband chip (700); Described the 5th resistance (R5) one end connects the 6th port of described switching device (J) and the second current detecting port (M2) that the other end connects described baseband chip (700); The 4th port and the other end that described the 6th resistance (R6) one end connects described switching device (J) connect the rear ground connection of described the 7th resistance resistance (R7).
6. mobile terminal wireless charging circuit as claimed in claim 5, is characterized in that: described detection module (800) also comprises the 3rd resistance (R3) and the 4th resistance (R4); Described the 3rd resistance (R3) is connected five-port (VOUT) and the other end ground connection of described DC-DC voltage transitions chip (T) with one end after the 4th resistance (R4) serial connection; Described dash receiver intelligent control chip also comprises that one is connected to the output voltage detection port between described the 3rd resistance (R3) and the 4th resistance (R4).
7. the mobile terminal wireless charging circuit as described in any one in claim 1 to 6, is characterized in that: dash receiver intelligent control chip is connected with described baseband chip (700) circuit by the communication bus of baseband chip (700).
8. the mobile terminal wireless charging circuit as described in any one in claim 1 to 6, is characterized in that: described switching device (J) is analog switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752423.4A CN103746420B (en) | 2013-12-31 | 2013-12-31 | Mobile terminal wireless charging circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752423.4A CN103746420B (en) | 2013-12-31 | 2013-12-31 | Mobile terminal wireless charging circuit |
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| Publication Number | Publication Date |
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| CN103746420A true CN103746420A (en) | 2014-04-23 |
| CN103746420B CN103746420B (en) | 2017-06-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398209A (en) * | 2019-08-13 | 2021-02-23 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398209A (en) * | 2019-08-13 | 2021-02-23 | 北京小米移动软件有限公司 | Wireless charging device, system, control method, terminal device and storage medium |
| 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 |
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| CN103746420B (en) | 2017-06-30 |
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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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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. |