CN105790328A - Charger and charging system with charger - Google Patents
Charger and charging system with charger Download PDFInfo
- Publication number
- CN105790328A CN105790328A CN201410807315.7A CN201410807315A CN105790328A CN 105790328 A CN105790328 A CN 105790328A CN 201410807315 A CN201410807315 A CN 201410807315A CN 105790328 A CN105790328 A CN 105790328A
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- Prior art keywords
- charging
- electrical switch
- charging manager
- resistance
- power module
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- Y02E70/40—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a charger, which is used for charging terminal equipment. The charger comprises a charging manager, an interface and a power module, wherein the charging manager is connected with the power module; the charging manager communicates with the terminal equipment through the interface to obtain power information of the terminal equipment; and the charging manager adjusts a control voltage output by the power module according to power information of the terminal equipment, and outputs a corresponding charging voltage to the terminal equipment according to the control voltage. The invention further provides a charging system with the charger. The charger and the charging system with the charger communicate with the terminal equipment through the charging manager to adjust the charging voltage output by the charging manager, so that the charging requirements of the terminal equipment are met; and the charging time of the terminal equipment is shortened.
Description
Technical field
The present invention relates to a kind of charger and there is the charging system of this charger.
Background technology
At present, along with the battery capacity of mobile equipment is increasing, the charging current of its needs also increasing, and charger is when exporting electric current and being bigger, its output voltage produces very big pressure drop after wire, thus causing charge efficiency poor so that the charging interval is elongated.
Summary of the invention
In view of the foregoing, it is necessary to a kind of charger reducing the charging interval is provided and there is the charging system of this charger.
A kind of charger, including a charging manager, an interface and a power module, this power module is connected with this charging manager, and this charging manager is the terminal unit charging being connected with this interface by this interface, and communicates to obtain the power information of this terminal unit with this terminal unit；This charging manager exports corresponding feedback signal to this power module according to the power information of this terminal unit, this power module adjusts the output to the control voltage of this charging manager according to the feedback signal received, and this charging manager is according to charging voltage corresponding to this control voltage output to this terminal unit.
A kind of charging system, including a charging manager, an interface, a power module and a terminal unit, this power module is connected with this charging manager, this charging manager is the terminal unit charging being connected with this interface by this interface, and communicates to obtain the power information of this terminal unit with this terminal unit；This charging manager exports corresponding feedback signal to this power module according to the power information of this terminal unit, this power module adjusts the output to the control voltage of this charging manager according to the feedback signal received, and this charging manager is according to charging voltage corresponding to this control voltage output to this terminal unit.
Above-mentioned charger and there is the charging system of this charger communicated by this charging manager and this terminal unit, to obtain the power information of this terminal unit, this charging manager regulates the control voltage of this power module output according to the power information of this terminal unit, and then according to charging voltage corresponding to this control voltage output to terminal unit, improve the charge efficiency of terminal unit, decrease the charging interval of this terminal unit.
Accompanying drawing explanation
Fig. 1 is the block diagram of the better embodiment of charging system of the present invention.
Fig. 2 is the circuit diagram that in Fig. 1, charger is connected with terminal unit.
Main element symbol description
| Charging system | 100 |
| Charger | 20 |
| Power module | 10 |
| AC-DC converter | U1 |
| Charging manager | U2 |
| USB interface | U3 |
| Terminal unit | U4 |
| Field effect transistor | Q1-Q2 |
| Resistance | R1-R5 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Refer to Fig. 1 and Fig. 2, the better embodiment of charging system 100 of the present invention includes charger 20 and a terminal unit U4 to be charged, and this charger 20 is for being charged for this terminal unit U4.This charger 20 includes power module 10, charging manager U2 and USB (universal serial bus) (UniversalSerialBus, USB) interface U3.This power module 10 is connected with this charging manager U2, and this charging manager U2 is connected with this terminal unit U4 by this USB interface U3, and communicates with this terminal unit U4.In present embodiment, this charging manager U2 exports corresponding feedback signal with terminal unit U4 to this power module 10 after communicating, this power module 10 regulates the control voltage of output according to the feedback signal that receives, and this charging manager U2 is according to charging voltage corresponding to this control voltage output to this terminal unit U4.
In present embodiment, pin VOUT, DM and DP of this charging manager U2 is corresponding with pin PWR, D-and D+ of USB interface U3 respectively to be connected, the equal ground connection of pin GND and pin ILIM of this charging manager U2, the pin GND ground connection of this USB interface U3.Wherein, pin D-and D+ of pin DM and DP and this USB interface U3 of this charging manager U2 is corresponding to be connected to be transmitted data when charging manager U2 is with the U4 communication of this terminal unit, and the pin PWR of pin VOUT and this USB interface U3 of this charging manager U2 is connected provides charging voltage for for terminal unit U4.
In present embodiment, this power module 10 is for the control voltage of the feedback signal output correspondence according to this charging manager U2 output.This power module 10 includes an AC-DC converter U1, resistance R1-R5, field effect transistor Q1-Q2.The default voltage pin 5V of this AC-DC converter U1 passes sequentially through resistance R1 and R2 ground connection, and the feedback voltage pin FB of this AC-DC converter U1 is connected to the node between this resistance R1 and R2, the grounding pin GND ground connection of this AC-DC converter U1.The default voltage pin 5V of this AC-DC converter U1 is connected by the drain D of resistance R3 and this field effect transistor Q1, and the drain D also by resistance R4 and this field effect transistor Q2 is connected.Node between the source S of this field effect transistor Q1 with this resistance R1 and R2 is connected, and the grid G of this field effect transistor Q1 is connected with the first signal pins Vset1 of this charging manager U2, to receive the first feedback signal of charging manager U2 output.Node between the source S of this field effect transistor Q2 with this resistance R1 and R2 is connected, and the grid G of this field effect transistor Q2 is connected with the secondary signal pin Vset2 of this charging manager U2, to receive the second feedback signal of charging manager U2 output.The default voltage pin 5V of this AC-DC converter U1 is also connected with the voltage input pin VIN of this charging manager U2, and is connected by the enable pin EN of resistance R5 and this charging manager U2.
In present embodiment, the output formula of this charger 20 is: P=U × I(1)
Wherein P is the output of charger 20, and U is the charging voltage of charger 20, and I is the output electric current of charger 20.From the output formula P of charger 20 it can be seen that when charger 20 output electric current I constant, the P proportional change with the change of charging voltage U of its output.
In present embodiment, this charging manager U2 is communicated by USB interface U3 and this terminal unit U4, for obtaining the power information of this terminal unit U4.This charging manager U2 is additionally operable to according to feedback signal corresponding to the power information output acquired to this power module 10, so that the control voltage that this power module 10 is according to the feedback signal output correspondence received, so, making this charger 20 when charging for different terminal unit U4, this charging manager U2 can regulate the control voltage of this power module 10 output according to the power information of this terminal unit U4.
When being different terminal unit chargings when using this charger 20, this charging manager U2 controls this charger 20 according to the power information of this terminal unit U4 and exports different output electric current I, and by the feedback signal of its first signal pins Vset and secondary signal pin Vset2 output correspondence to this power module 10 so that this power module 10 regulates the control voltage exported according to the feedback signal received.
When the terminal unit U4 charging that charger 20 is low constant power demand, as when this charging manager U2 control this charger 20 output electric current I be 0.1A time, this charging manager U2 exports low level first feedback signal grid G to field effect transistor Q1 by the first signal pins Vset1, low level second feedback signal grid G to this field effect transistor Q2 is exported so that this field effect transistor Q1 and Q2 is turned off also by secondary signal pin Vset2.The output voltage that can be obtained this power module 10 by basic circuit principle knowledge meets below equation:
Vout=Vfb×(1+r2/r1)(2)
Wherein, Vout is the control voltage of this power module 10 output, and Vfb is the feedback voltage pin FB of this AC-DC converter U1 reference voltage fed back, and r1 is the resistance value of resistance R1, and r2 is the resistance value of resistance R2.
When the terminal unit U4 charging that charger 20 is mid power demand, as when this charging manager U2 control this charger 20 output electric current I be 1A time, this charging manager U2 exports first feedback signal grid G to field effect transistor Q1 of a high level by the first signal pins Vset1, low level second feedback signal grid G to this field effect transistor Q2 is exported also by secondary signal pin Vset2, this field effect transistor Q1 is turned on, and field effect transistor Q2 ends.The control voltage Vout of the output that can be obtained this power module 10 by basic circuit principle knowledge meets below equation:
Vout=Vfb×(1+r2/r1+r2/r3)(3)
Wherein, r3 is the resistance value of resistance R3.Learn according to formula (3), the control voltage Vout of this power module 10 output can be regulated by choosing the resistance value r3 of suitable resistance R3 within the specific limits.
When the terminal unit U4 charging that charger 20 is high power demand, it is 2A that this charging manager U2 controls the electric current I of this charger 20 output, now, this charging manager U2 exports first feedback signal grid G to field effect transistor Q1 of a high level by the first signal pins Vset1, second feedback signal grid G to this field effect transistor Q2 of a high level is exported so that this field effect transistor Q1 and field effect transistor Q2 is both turned on also by secondary signal pin Vset2.Now, the control voltage Vout of this power module 10 output meets below equation:
Vout=Vfb×(1+r2/r1+r2/r3+r2/r4)(4)
Wherein, r4 is the resistance value of resistance R4.According to formula (4) it can be seen that by the suitable resistance value r4 choosing resistance R4, it is possible to regulate the control voltage Vout of this charging module 10 output within the specific limits.
Can draw in conjunction with formula (1), formula (2), formula (3) and formula (4), when the power demand of this terminal unit U4 increases, the control voltage Vout of this power module 10 output will corresponding increase, and along with the raising controlling voltage Vout of this power module 10 output, the charging voltage U of this charger 20 is also improving, also improve the output P of this charger 20 to a certain extent, decrease the charging interval of this terminal unit U4, improve the charge efficiency into terminal unit U4.
In present embodiment, this field effect transistor Q1 and Q2 can be replaced NPN type triode and other has the switch of identical function.
Above-mentioned charging system 100 is during charging, communicated by the charging manager U2 in this charger 20 and this terminal unit U4, to obtain the power information of this terminal unit U4, this charging manager U2 controls conducting and the cut-off of this field effect transistor Q1 and field effect transistor Q2 according to this power information, to change the charging voltage of this charger 20 output.Charging system 100 also can export corresponding electric current according to the power information of terminal unit U4, so that charging system 100 reduces the charging interval by regulating charging voltage and electric current, also improves the efficiency into charger charging.
Claims (10)
1. a charger, including a charging manager, an interface and a power module, this power module is connected with this charging manager, and this charging manager is the terminal unit charging being connected with this interface by this interface, and communicates to obtain the power information of this terminal unit with this terminal unit；This charging manager exports corresponding feedback signal to this power module according to the power information of this terminal unit, this power module adjusts the output to the control voltage of this charging manager according to the feedback signal received, and this charging manager is according to charging voltage corresponding to this control voltage output to this terminal unit.
null2. charger as claimed in claim 1，It is characterized in that: this power module includes an AC-DC converter、The first to the second electrical switch and the first to the 5th resistance，The default voltage pin of this AC-DC converter passes sequentially through the first resistance and the second resistance eutral grounding，Node between this first resistance and second resistance is connected with the feedback voltage pin of this AC-DC converter，The earth terminal ground connection of this AC-DC converter，The default voltage pin of this AC-DC converter is connected with the first end of this first electrical switch also by the 3rd resistance，Node between second end of this first electrical switch with this first resistance and second resistance is connected，3rd end of this first electrical switch is connected with the first signal pins of this charging manager，The default voltage pin of this AC-DC converter is also connected with the voltage input pin of this charging manager，And be connected with the enable pin of this charging manager by the 4th resistance；First end of this second electrical switch is connected with the default voltage pin of this AC-DC converter by the 5th resistance, node between second end of this second electrical switch with this first resistance and second resistance is connected, and the 3rd end of this second electrical switch is connected with the secondary signal pin of this charging manager.
3. charger as claimed in claim 2, it is characterized in that: when charging manager is by the first power information of this interface arrival self terminal equipment, this charging manager controls power module output one first electric current to this terminal unit, first signal pins of this charging manager exports first feedback signal, first end to this first electrical switch of a high level, the secondary signal output pin of this charging manager exports low level second feedback signal the 3rd end to this second electrical switch, this first electrical switch turns on, this second electrical switch ends, this power module output one first voltage.
4. charger as claimed in claim 3, it is characterized in that: when charging manager is by the second power information of this interface arrival self terminal equipment, this charging manager controls power module output one second electric current to this terminal unit, first signal pins of this charging manager exports first feedback signal, first end to this first electrical switch of a high level, and the secondary signal pin of this charging manager exports second feedback signal the 3rd end to the second electrical switch of a high level, first electrical switch conducting, second electrical switch conducting, this power module output one second voltage.
5. charger as claimed in claim 4, it is characterized in that: this interface is a USB, this the first to the second electrical switch is a NMOS field effect transistor or is a NPN type triode, and the first end of this first to the second electrical switch, the second end and the 3rd end correspond respectively to the drain electrode of described NMOS field effect transistor, source electrode and grid or the colelctor electrode of this NPN type triode, emitter stage and base stage.
6. a charging system, including a charging manager, an interface, a power module and a terminal unit, this power module is connected with this charging manager, this charging manager is the terminal unit charging being connected with this interface by this interface, and communicates to obtain the power information of this terminal unit with this terminal unit；This charging manager exports corresponding feedback signal to this power module according to the power information of this terminal unit, this power module adjusts the output to the control voltage of this charging manager according to the feedback signal received, and this charging manager is according to charging voltage corresponding to this control voltage output to this terminal unit.
null7. charging system as claimed in claim 6，It is characterized in that: this power module includes an AC-DC converter、The first to the second electrical switch and the first to the 5th resistance，The default voltage pin of this AC-DC converter passes sequentially through the first resistance and the second resistance eutral grounding，Node between this first resistance and second resistance is connected with the feedback voltage pin of this AC-DC converter，The earth terminal ground connection of this AC-DC converter，The default voltage pin of this AC-DC converter is connected with the first end of this first electrical switch also by the 3rd resistance，Node between second end of this first electrical switch with this first resistance and second resistance is connected，3rd end of this first electrical switch is connected with the first signal pins of this charging manager，The default voltage pin of this AC-DC converter is also connected with the voltage input pin of this charging manager，And be connected with the enable pin of this charging manager by the 4th resistance；First end of this second electrical switch is connected with the default voltage pin of this AC-DC converter by the 5th resistance, node between second end of this second electrical switch with this first resistance and second resistance is connected, and the 3rd end of this second electrical switch is connected with the secondary signal pin of this charging manager.
8. charging system as claimed in claim 7, it is characterized in that: when charging manager is by the first power information of this interface arrival self terminal equipment, this charging manager controls power module output one first electric current to this terminal unit, first signal pins of this charging manager exports first feedback signal, first end to this first electrical switch of a high level, the secondary signal output pin of this charging manager exports low level second feedback signal the 3rd end to this second electrical switch, this first electrical switch turns on, this second electrical switch ends, this power module output one first voltage.
9. charging system as claimed in claim 8, it is characterized in that: when charging manager is by this interface arrival self terminal equipment second power information, this charging manager controls power module output one second electric current to this terminal unit, first signal pins of this charging manager exports first feedback signal, first end to this first electrical switch of a high level, and the secondary signal pin of this charging manager exports second feedback signal the 3rd end to the second electrical switch of a high level, first electrical switch conducting, second electrical switch conducting, this power module output one second voltage.
10. charging system as claimed in claim 9, it is characterized in that: this interface is a USB, this the first to the second electrical switch is a NMOS field effect transistor or is a NPN type triode, and the first end of this first to the second electrical switch, the second end and the 3rd end correspond respectively to the drain electrode of described NMOS field effect transistor, source electrode and grid or the colelctor electrode of this NPN type triode, emitter stage and base stage.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410807315.7A CN105790328A (en) | 2014-12-23 | 2014-12-23 | Charger and charging system with charger |
| TW104100605A TWI595725B (en) | 2014-12-23 | 2015-01-09 | Charger and charging system including the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410807315.7A CN105790328A (en) | 2014-12-23 | 2014-12-23 | Charger and charging system with charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105790328A true CN105790328A (en) | 2016-07-20 |
Family
ID=56386300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410807315.7A Pending CN105790328A (en) | 2014-12-23 | 2014-12-23 | Charger and charging system with charger |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105790328A (en) |
| TW (1) | TWI595725B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487204A (en) * | 2010-12-03 | 2012-06-06 | 深圳富泰宏精密工业有限公司 | Charging device |
| CN202454839U (en) * | 2012-01-13 | 2012-09-26 | 特通科技有限公司 | Connector with built-in charging integrated circuit |
| CN103208850A (en) * | 2013-04-12 | 2013-07-17 | 惠州Tcl移动通信有限公司 | Universal serial bus (USB) charging system with variable charging voltage, charger and intelligent terminal |
| CN103795128A (en) * | 2014-03-06 | 2014-05-14 | 黄宇嵩 | Two-step constant current high-power charger with computer USB port for mobile phone battery |
| CN104092274A (en) * | 2014-07-29 | 2014-10-08 | 深圳市至高通信技术发展有限公司 | Intelligent charger with output voltage changing function |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM254813U (en) * | 2001-09-21 | 2005-01-01 | O2Micro Inc | Power management for battery powered appliances |
| US7605568B2 (en) * | 2006-03-10 | 2009-10-20 | Atmel Corporation | Deep under voltage recovery in a battery pack |
| JP4660523B2 (en) * | 2007-09-19 | 2011-03-30 | レノボ・シンガポール・プライベート・リミテッド | Charging system that controls charging at the surface temperature of the battery cell |
| US8143862B2 (en) * | 2009-03-12 | 2012-03-27 | 02Micro Inc. | Circuits and methods for battery charging |
| TW201308061A (en) * | 2011-08-12 | 2013-02-16 | Acer Inc | USB charging devices, and methods thereof |
-
2014
- 2014-12-23 CN CN201410807315.7A patent/CN105790328A/en active Pending
-
2015
- 2015-01-09 TW TW104100605A patent/TWI595725B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487204A (en) * | 2010-12-03 | 2012-06-06 | 深圳富泰宏精密工业有限公司 | Charging device |
| CN202454839U (en) * | 2012-01-13 | 2012-09-26 | 特通科技有限公司 | Connector with built-in charging integrated circuit |
| CN103208850A (en) * | 2013-04-12 | 2013-07-17 | 惠州Tcl移动通信有限公司 | Universal serial bus (USB) charging system with variable charging voltage, charger and intelligent terminal |
| CN103795128A (en) * | 2014-03-06 | 2014-05-14 | 黄宇嵩 | Two-step constant current high-power charger with computer USB port for mobile phone battery |
| CN104092274A (en) * | 2014-07-29 | 2014-10-08 | 深圳市至高通信技术发展有限公司 | Intelligent charger with output voltage changing function |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201633645A (en) | 2016-09-16 |
| TWI595725B (en) | 2017-08-11 |
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Application publication date: 20160720 |
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