CN100403621C - Power supplier - Google Patents
Power supplier Download PDFInfo
- Publication number
- CN100403621C CN100403621C CNB2004100947775A CN200410094777A CN100403621C CN 100403621 C CN100403621 C CN 100403621C CN B2004100947775 A CNB2004100947775 A CN B2004100947775A CN 200410094777 A CN200410094777 A CN 200410094777A CN 100403621 C CN100403621 C CN 100403621C
- Authority
- CN
- China
- Prior art keywords
- impedance
- voltage
- power supply
- battery
- coupled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a power supply device which is used for supplying a power supply required by a load device. The power supply device comprises a battery, an adjustable power supply converter and a control circuit, wherein the battery is used for selectively outputting the power supply required by the load device, and the battery is provided with a current flowmeter; the power supply converter is used for receiving AC voltage and converting the AC voltage into a first DC voltage or a second DC voltage, and the power supply converter is also used for receiving a regulation signal; when the regulation signal is an enable signal, the power supply converter can output the second DC voltage which is lower than the output voltage of the battery; the control circuit is coupled with the battery and the power supply converter. When the electric quantity of the battery is calculated, a regulating signal is regulated to the enable signal by the control circuit, and the power supply converter can output the second DC voltage which enables the battery to discharge to the load device, so that the electric quantity of the battery can be recalculated by the current flowmeter.
Description
Technical field
The present invention relates to a kind of power supply device, particularly relate to the power supply device of battery with self-teaching program.
Background technology
Please refer to Fig. 1, it shows the calcspar of the conventional power source feeding mechanism of first example.Power supply device 100 comprises AC-DC power supply transducer 102, connector 104, charging circuit 106, first switch 108, battery pack 110, microcontroller 112 and load device 114.Power supply device 100 is in order to provide load device 114 required power supply, and load device 114 for example is a mobile computer.AC-DC power supply transducer 102 receives AC power AC and is converted to DC power supply DC.Wherein, AC power AC for example is civil power AC110/220V.DC power supply DC directly offers the required power supply of mobile computer 114 via connector 104, or via the battery charge in 106 pairs of battery pack of charging circuit 110, at this moment, battery does not provide power supply to mobile computer 114.When AC-DC power supply transducer 102 does not receive AC power AC, microcontroller just makes the output voltage of battery offer mobile computer 114 via first switch 108 108 conductings of first switch.
When needs are carried out the program of battery self-teaching, after power supply device 100 is full of electricity with battery 110 by charging circuit 106 earlier, discharge fully again.In the time will discharging, because AC-DC power supply transducer 102 can't turn off voluntarily, so can continue output DC source DC to mobile computer 114.So power supply device 100 can require the user to pull out plug, to cut off the electric connection of AC-DC power supply transducer 102 and civil power, so that battery 110 can be to mobile computer 114 discharges.When for example power supply unit 100 uses on mobile computer 114, have a picture via program and inform that the user pulls away civil power with AC-DC power supply transducer 102.Then, 108 conductings of microcontroller 112 control first switch allow battery 110 via 114 discharges of 108 pairs of mobile computers of first switch, the voltage of battery 110 is discharged to is lower than final voltage, to reach so-called discharge fully.But this way must manual operation, and the burden that increases the user also causes user's inconvenience.
So known have a kind of practice to produce in addition.Please refer to Fig. 2, it shows the calcspar of the conventional power source feeding mechanism of second example.In this power supply device 100 ', increase second switch 116 in power supply device, it is coupled between AC-DC power supply transducer 102 and the mobile computer 114.Utilize microcontroller 112 control second switches 116 to end, make second switch 116 isolate the DC power supply DC that AC-DC power supply transducer 102 is provided.Battery 110 can be discharged via 108 pairs of mobile computers of first switch, and need manual operation AC-DC power supply transducer 102 not pulled away civil power.But the DC power supply DC that such practice will cause AC-DC power supply transducer 102 to be provided is isolated completely.At this moment, if the user is when pulling away battery 110, mobile computer 114 will be unexpected loses power supply, will cause the damage of the internal data of computer.So plant the cost that way not only needs second switch 116 in addition, also may cause the bigger loss of user.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of power supply unit, the problem when needing in the program that solves self-teaching battery discharged fully.
According to purpose of the present invention, a kind of power supply device is proposed, in order to provide a load device required power supply, this power supply device comprises: a battery, in order to optionally to export the required power supply of this load device, this battery has a current flow meter, in order to measure the magnitude of current that this battery flows into or flows out, to calculate the electric weight of this battery; One adjustable power supply changeover device, in order to receive an alternating voltage, to be converted to one first direct voltage or one second direct voltage, this adjustable power supply changeover device is more adjusted signal in order to receive one, when this adjustment signal is activation, this adjustable power supply changeover device is just exported this second direct voltage, and the size system of this second direct voltage is lower than the output voltage of this battery; An and control circuit, be coupled to this battery and this adjustable power supply changeover device, in the time will calculating the electric weight of this battery, it is activation that this control circuit makes this adjustment signal, this adjustable power supply changeover device is just exported this second direct voltage, and this control circuit makes this battery to this load device discharge, so that this current flow meter can recomputate the electric weight of this battery.
The present invention also proposes a kind of power supply device, in order to provide a load device required power supply, this power supply device comprises: a battery, in order to optionally to export the required power supply of this load device, this battery has a current flow meter, in order to measuring the magnitude of current that this battery flows into or flows out, calculating the electric weight of this battery, this current flow meter is also exported an electric weight indicating signal according to the electric weight of this battery; One adjustable power supply changeover device, in order to receive an alternating voltage, to be converted to one first direct voltage or one second direct voltage, this adjustable power supply changeover device is more adjusted signal in order to receive one, when this adjustment signal is activation, this adjustable power supply changeover device is just exported this second direct voltage, this adjustable power supply changeover device comprises: a transducer main circuit, has a voltage output end and voltage back coupling end, this transducer main circuit is in order to after being converted to this alternating voltage one first direct voltage or this second direct voltage, in this voltage output end output; One first impedance, the end system of this first impedance is coupled to this voltage output end, and the other end of this first impedance is coupled to this voltage back coupling end; One second impedance, an end of this second impedance are coupled to this voltage back coupling end, and to export a feedback voltage to this voltage back coupling end, the other end of this second impedance is coupled to a fixed voltage; One the 3rd impedance lies in this adjustment signal when being activation, and the 3rd impedance system is in parallel with this first impedance; One the first transistor, have one first emitter, one first base stage and one first collector electrode, this first collector electrode is coupled to this voltage back coupling end, this first base stage receives this adjustment signal, one end of the 3rd impedance is coupled to this voltage output end, and the other end of the 3rd impedance is coupled to this first emitter; And one the 4th impedance, an end of the 4th impedance is coupled to this voltage output end, and the other end of the 4th impedance is coupled to this first base stage; An and control circuit, system is coupled to this battery and this adjustable power supply changeover device, in the time will calculating the electric weight of this battery, it is that activation is so that this first transistor conducting that this control circuit makes this adjustment signal, after this first transistor conducting, the 3rd impedance system is in parallel with this second impedance, and this voltage output end is exported this second direct voltage, and this control circuit makes this battery to this load device discharge, so that this current flow meter can recomputate the electric weight of this battery; Wherein, this adjustable power supply changeover device is adjusted the voltage of this voltage output end according to the size of this feedback voltage, when this adjustment signal is activation, the 3rd impedance system is in parallel with this second impedance, this voltage output end is exported this second direct voltage, otherwise this voltage output end is exported this first direct voltage.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and be described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 is the calcspar of the conventional power source supply of first example.
Fig. 2 is the calcspar of the conventional power source supply of second example.
Fig. 3 is the calcspar according to the power supply device of a preferred embodiment of the present invention.
Fig. 4 is the circuit diagram of part power supply changeover device.
Fig. 5 is the circuit diagram of the voltage controller 216 of Fig. 3.
The reference numeral explanation
100,100 ': power supply device
102: the AC-DC power supply transducer
104: connector
106: charging circuit
108: the first switches
110: battery
112: microcontroller
114: load device
116: second switch
200: power supply device
202: power supply changeover device
204: control circuit
206: load device
208: charging circuit
210: switch
212: battery
214: microcontroller
216: voltage controller
218: the transducer main circuit
220: adjust circuit
Embodiment
Please refer to Fig. 3, it shows the calcspar according to a kind of power supply device of a preferred embodiment of the present invention.Power supply device 200 comprises an adjustable power supply changeover device 202, a control circuit 204, a battery 212 and load device 206, and load device 206 for example is a mobile computer.Power supply device 200 is in order to provide mobile computer required power supply.Adjustable power supply changeover device 202 receives alternating voltage AC to be converted to the first direct voltage DC1 or the second direct voltage DC2, and AC power AC is civil power AC110/220V for example.Adjustable power supply changeover device 202 is also adjusted signal ADJ in order to receive one, and when adjustment signal ADJ was activation, adjustable power supply changeover device 202 was just exported the second direct voltage DC2, otherwise, the adjustable power supply changeover device 202 outputs first direct voltage DC1.Control circuit 204 comprises switch 210, charging circuit 208, voltage controller 216 and microcontroller 214.Battery 212 comprises current flow meter (not in Fig. 3), in order to measure the magnitude of current that battery 212 flows into or flows out, with the electric weight of counting cell 212, and exports an electric weight indicating signal ID according to the electric weight of battery 212.Microcontroller 214 is in order to output controlling signal Ctrl 1, switch signal Ctrl 2 and charging signals CS.Charging circuit 208 is coupled to power supply changeover device 202, when charging circuit 208 receives the charging signals CS that is exported by microcontroller 214, to battery 212 chargings.Voltage controller 216 is adjusted signal ADJ according to controlling signal Ctrl1 with output.Switch 210 is coupled between battery 212 and the mobile computer 206, and according to switch signal Ctrl 2 with conducting.
In the ordinary course of things, power supply device 200 receives alternating voltage AC, and power supply device 200 will directly provide the first direct voltage DC1 to mobile computer 206, and can not provide mobile computer 206 required power supply by battery 212.Perhaps, when electric weight indicating signal ID represents that the electric weight of battery 212 is not enough, microcontroller 214 output charging signals CS.Charging circuit 208 charges to battery 212 according to charging signals CS.
Another kind of situation, when power supply changeover device 202 pulled away civil power, when perhaps control circuit did not receive the power supply that power supply changeover device 202 supplied, switch signal Ctrl 2 just exported by microcontroller 214 so that switch 210 conductings.During switch 210 conductings, battery 212 just can provide mobile computer 206 required power supply.
When carrying out the program of battery self-teaching, after elder generation is full of electricity with battery 212, discharge fully again.So microcontroller 214 is output charging signals CS earlier, so that 212 chargings of 208 pairs of batteries of charging circuit.When battery 212 is full of electricity, for example the electric weight of electric weight indicating signal ID pilot cell 212 then will allow battery 212 discharge fully for being full of.Because power supply changeover device 202 still continues to provide the first DC power supply DC1 to use to mobile computer 206, in order to allow battery 212 discharge to mobile computer 206.Must be lower than a final voltage (End voltage) by power supply changeover device 202 output voltages, could allow 212 pairs of mobile computers of battery 206 discharge.So microcontroller 214 is then exported controlling signal Ctrl 1 and switch signal Ctrl 2.It is activation that voltage controller 216 just makes adjustment signal ADJ according to controlling signal Ctrl 1.Power supply changeover device 202 receives adjusts signal ADJ, is activation when adjusting signal ADJ, just changes the output second direct voltage DC2.And switch 210 is also according to switch signal Ctrl 2 conductings, because this moment, the output voltage of battery 212 was higher than the second direct voltage DC2, power supply device 200 will not provide the second direct voltage DC2 to load device 206, and control circuit 204 only makes 206 discharges of 212 pairs of load devices of battery.At this moment, battery 212 will continue load device 206 discharge, and the electric weight of representing battery 212 to electric weight indicating signal ID is when not enough, and the current flow meter stops counting, and recalculates the electric weight of battery 212.So just do not need the user to cut off and being connected of civil power so that battery can be discharged from being about to power supply changeover device 202.
Furthermore, spirit of the present invention is to control adjustable power supply changeover device 202 output voltage sizes, makes its final voltage that is lower than battery 212, just allows the second direct voltage DC2 less than final voltage.Please refer to Fig. 4, it shows the circuit diagram of the power supply changeover device 202 of part.Power supply changeover device 202 comprises transducer main circuit 218, the first impedance R1, the second impedance R2 and adjusts circuit 220 that impedance R1, R2 for example are resistance.Transducer main circuit 218 has a voltage output end Vout and voltage back coupling end FB.Transducer main circuit 218 is in order to being converted to direct voltage DC1 or DC2 with alternating voltage AC (not in Fig. 4), and exports in voltage output end Vout.The end of the first impedance R1 is coupled to voltage output end Vout, and its other end is coupled to voltage back coupling end FB.The end of the second impedance R2 is coupled to voltage back coupling end FB, feedbacks to voltage with reset voltage VF and holds FB, and the other end of the second impedance R2 is coupled to a fixed voltage, and this fixed voltage for example is an earthed voltage.When the first direct voltage DC1 via the bleeder circuit that R1 and R2 formed, when producing feedback voltage VF in node N, transducer main circuit 218 is made comparisons feedback voltage VF and internal reference voltage, to control the size of the first direct voltage DC1.When feedback voltage VF changed, transducer main circuit 218 was just adjusted the size of its voltage of being exported in voltage output end Vout, so that feedback voltage VF keeps certain value.Therefore by the size that changes feedback voltage VF, just can reach the output voltage of adjusting transducer main circuit 218.
Power supply changeover device 202 has one and adjusts circuit 220, and this adjusts circuit 220 in order to when adjustment signal ADJ is activation, changes the size of feedback voltage VF, so that the power supply changeover device 202 outputs second direct voltage DC2.The second direct voltage DC2 is defined as less than a final voltage, and final voltage is the defined magnitude of voltage of manufacturer of current flow chip IC, when the output voltage of battery 212 is lower than final voltage (End voltage) interval scale battery electric quantity deficiency, also just represent battery to discharge fully.
Adjust circuit 220 and comprise the first transistor Q1, the 3rd impedance R3 and the 4th impedance R4.Impedance R3, R4 for example are resistance.The first transistor Q1 for example is a positive-negative-positive double carriers junction transistor (BJT), and it has first emitter E 1, the first base stage B1 and the first collector electrode C1.The first collector electrode C1 is coupled to voltage back coupling end FB.The first base stage B1 receives and adjusts signal ADJ.The end of the 3rd impedance R3 is coupled to voltage output end Vout, and its other end is coupled to first emitter E 1.One end of the 4th impedance is coupled to voltage output end Vout, and its other end is coupled to the first base stage B1.When adjusting signal ADJ activation, the first transistor Q1 conducting, the 3rd impedance R3 is just in parallel with the first impedance R1, makes direct voltage DC1 produce feedback voltage VF via the bleeder circuit that R1 and R3 and R2 formed of parallel connection.Because R1 in parallel and the equivalent resistance of R3 be less than the resistance value of R1, thus transducer main circuit 218 for feedback voltage VF is remained on certain value, its output voltage will be come down to the second direct voltage DC2.
Please refer to Fig. 5, it shows the circuit diagram of the voltage controller 216 of Fig. 3.Voltage controller 216 is adjusted signal ADJ according to controlling signal Ctrl 1 output, and voltage controller 216 includes transistor seconds Q2 and the 5th impedance R5.Transistor seconds Q2 for example is a NPN type double carriers junction transistor (BJT), and it has second emitter E 2, the second base stage B2 and the second collector electrode C2.Signal ADJ is adjusted in second collector electrode C2 output.The second base stage B2 receives controlling signal Ctrl 1.The other end that the end of the 5th impedance R5 is coupled to 2, the five impedances of second emitter E is coupled to ground voltage.When microcontroller 214 is sent controlling signal Ctrl 1 for high-voltage level, for example high-voltage level is 3.3V, transistor seconds Q2 conducting, an electric current I will flow through transistor seconds Q2, and the electric current I that is second collector electrode C2 output adjustment signal ADJ is (3.3-VBE2)/R7=2.5mA.
When being 2.5mA, will make the first transistor Q1 conducting, and make power supply changeover device 202 export the second direct voltage DC2 by the electric current I of adjusting signal ADJ.Please be simultaneously with reference to Fig. 4 and Fig. 5, for example, when feedback voltage VF is that 2.5V, final voltage are that 9V, the first impedance R1 are that 61.9K ohm, the second impedance R2 are that 10K ohm, the 3rd impedance R3 are 21.5K ohm and the 4th impedance R4 when being 1.5K ohm, divide following two kinds of situation discussion:
First kind of situation: when supposing that adjustment signal ADJ is disabled, electric current I is 0mA, the collector current IC1 of the first transistor Q1 approximates (0mA * R4-VEB1)/R3=(0mA * 1.5K Ω-0.6V)/21K Ω=-27.6 μ A, VEB1 is first emitter E 1 of the first transistor Q1 and the voltage difference between the first base stage B1, collector current IC1 is that on behalf of the first transistor Q1, negative value do not have conducting, export first direct voltage DC1 in voltage output end Vout this moment, and its voltage approximates (VF/R2-IC1) * R1+VF=(2.5V/10K Ω-0) * 61.9K+2.5V=18V.
Second kind of situation: when adjustment signal ADJ is activation, electric current I increases to 2.5mA, IC1 approximates=(2.5mA * 1.5K Ω-0.6V)/21K Ω=0.145mA, and export second direct voltage DC2 in voltage output end Vout this moment, its voltage approximates (VF/R2-IC1) * R1+VF=, and (2.5V/10K Ω-0.145mA) * 61.9K+2.5V=9V approximates the final voltage of battery.So when the voltage of second base stage B2 reception is 0V (when controlling signal Ctrl 1 is disabled), the output voltage of power supply changeover device 202 is that the first direct voltage DC1 is 18V, when the voltage of second base stage B2 reception is 3.3V (when controlling signal Ctrl 1 is activation), the output voltage of power supply changeover device 202 is that the second direct voltage DC2 is 9V.
In addition, when breaking down in battery 212 discharge processes, 202 moments of power supply changeover device are supplied by the second direct voltage DC2, to continue to offer the required power supply of mobile computer 206.
The power supply device that the above embodiment of the present invention is disclosed, the output voltage size by adjusting power supply changeover device makes it be lower than the final voltage of battery.So battery can be discharged to mobile computer, allow the output voltage of battery be discharged to the size of final voltage.Problem to need in the solution battery self-teaching program to discharge fully more solves when in the discharge process battery failures taking place, and can allow power supply changeover device that power supply is provided at once, avoids the damage of the internal data of computer.
In sum; though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; those skilled in the art under the premise without departing from the spirit and scope of the present invention; can be used for a variety of modifications and variations, so protection scope of the present invention is as the criterion with claim of the present invention.
Claims (8)
1. power supply device, in order to provide a load device required power supply, this power supply device comprises:
One battery, in order to optionally to export the required power supply of this load device, this battery has a current flow meter, in order to measure the magnitude of current that this battery flows into or flows out, to calculate the electric weight of this battery;
One adjustable power supply changeover device, in order to receive an alternating voltage, to be converted to one first direct voltage or one second direct voltage, this adjustable power supply changeover device is also adjusted signal in order to receive one, when this adjustment signal is activation, this adjustable power supply changeover device is just exported this second direct voltage, and the size of this second direct voltage is lower than the output voltage of this battery; And
One control circuit, be coupled to this battery and this adjustable power supply changeover device, in the time will calculating the electric weight of this battery, it is activation that this control circuit makes this adjustment signal, this adjustable power supply changeover device is just exported this second direct voltage, and this control circuit makes this battery to this load device discharge, so that this current flow meter can recomputate the electric weight of this battery.
2. power supply device as claimed in claim 1, wherein, this current flow meter is also exported an electric weight indicating signal according to the electric weight of this battery, and this control circuit comprises:
One microcontroller when this electric weight indicating signal indicates the electric weight of this battery to be deficiency, is exported a charging signals; And
One charging circuit is coupled to this adjustable power supply changeover device, when this charging circuit receives this charging signals, to this battery charge.
3. power supply device as claimed in claim 2, wherein this adjustable power supply changeover device comprises:
One transducer main circuit has a voltage output end and voltage back coupling end, and this transducer main circuit is in order to after being converted to this alternating voltage this first direct voltage or this second direct voltage, in this voltage output end output;
One first impedance, an end of this first impedance is coupled to this voltage output end, and the other end of this first impedance is coupled to this voltage back coupling end,
One second impedance, an end of this second impedance are coupled to this voltage back coupling end, and to export a feedback voltage to this voltage back coupling end, the other end of this second impedance is coupled to a fixed voltage; And
One the 3rd impedance, when this adjustment signal was activation, the 3rd impedance was in parallel with this first impedance;
Wherein, this adjustable power supply changeover device is adjusted the voltage of this voltage output end according to the size of this feedback voltage, when this adjustment signal is activation, the 3rd impedance is in parallel with this second impedance, this voltage output end is exported this second direct voltage, otherwise this voltage output end is exported this first direct voltage.
4. power supply device as claimed in claim 3, wherein this adjustable power supply changeover device also comprises:
One the first transistor, have one first emitter, one first base stage and one first collector electrode, this first collector electrode is coupled to this voltage back coupling end, this first base stage receives this adjustment signal, one end of the 3rd impedance is coupled to this voltage output end, and the other end of the 3rd impedance is coupled to this first emitter; And
One the 4th impedance, an end of the 4th impedance is coupled to this voltage output end, and the other end of the 4th impedance is coupled to this first base stage.
5. power supply device as claimed in claim 4, wherein this control circuit also comprises:
One transistor seconds has one second emitter, one second base stage and one second collector electrode, and this second collector electrode is in order to export this adjustment signal, and this second base stage receives a controlling signal; And
One the 5th impedance, an end of the 5th impedance is coupled to this second emitter, and the other end of the 5th impedance is coupled to this fixed voltage;
Wherein, when this controlling signal is activation, this transistor seconds conducting, one first electric current flows through the 4th impedance, this transistor seconds and the 5th impedance, makes this adjustment signal transfer activation to, so, this the first transistor conducting makes the 3rd impedance in parallel in fact with this first impedance.
6. power supply device, in order to provide a load device required power supply, this power supply device comprises:
One battery, in order to optionally to export the required power supply of this load device, this battery has a current flow meter, in order to measure the magnitude of current that this battery flows into or flows out, calculating the electric weight of this battery, this current flow meter is also exported an electric weight indicating signal according to the electric weight of this battery;
One adjustable power supply changeover device, in order to receive an alternating voltage, to be converted to one first direct voltage or one second direct voltage, this adjustable power supply changeover device is also adjusted signal in order to receive one, when this adjustment signal is activation, this adjustable power supply changeover device is just exported this second direct voltage, and this adjustable power supply changeover device comprises:
One transducer main circuit has a voltage output end and voltage back coupling end, and this transducer main circuit is in order to after being converted to this alternating voltage one first direct voltage or this second direct voltage, in this voltage output end output;
One first impedance, an end of this first impedance is coupled to this voltage output end, and the other end of this first impedance is coupled to this voltage back coupling end;
One second impedance, an end of this second impedance are coupled to this voltage back coupling end, and to export a feedback voltage to this voltage back coupling end, the other end of this second impedance is coupled to a fixed voltage;
One the 3rd impedance, when this adjustment signal was activation, the 3rd impedance was in parallel with this first impedance;
One the first transistor, have one first emitter, one first base stage and one first collector electrode, this first collector electrode is coupled to this voltage back coupling end, this first base stage receives this adjustment signal, one end of the 3rd impedance is coupled to this voltage output end, and the other end of the 3rd impedance is coupled to this first emitter; And
One the 4th impedance, an end of the 4th impedance is coupled to this voltage output end, and the other end of the 4th impedance is coupled to this first base stage; And
One control circuit, be coupled to this battery and this adjustable power supply changeover device, in the time will calculating the electric weight of this battery, it is that activation is so that this first transistor conducting that this control circuit makes this adjustment signal, after this first transistor conducting, the 3rd impedance is in parallel with this second impedance, and this voltage output end is exported this second direct voltage, and this control circuit makes this battery to this load device discharge, so that this current flow meter can recomputate the electric weight of this battery;
Wherein, this adjustable power supply changeover device is adjusted the voltage of this voltage output end according to the size of this feedback voltage, when this adjustment signal is activation, the 3rd impedance is in parallel with this second impedance, this voltage output end is exported this second direct voltage, otherwise this voltage output end is exported this first direct voltage.
7. power supply device as claimed in claim 6, wherein, this current flow meter is also exported an electric weight indicating signal according to the electric weight of this battery, and this control circuit comprises:
One microcontroller when this electric weight indicating signal indicates the electric weight of this battery to be deficiency, is exported a charging signals; And
One charging circuit is coupled to this adjustable power supply changeover device, when this charging circuit receives this charging signals, to this battery charge.
8. power supply device as claimed in claim 6, wherein this control circuit comprises:
One transistor seconds has one second emitter, one second base stage and one second collector electrode, and this second collector electrode is in order to export this adjustment signal, and this second base stage receives a controlling signal; And
One the 5th impedance, an end of the 5th impedance is coupled to this second emitter, and the other end of the 5th impedance is coupled to this fixed voltage;
Wherein, when this controlling signal is activation, this transistor seconds conducting, one first electric current flows through the 4th impedance, this transistor seconds and the 5th impedance, makes this adjustment signal transfer activation to, so, this the first transistor conducting makes the 3rd impedance in parallel in fact with this first impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100947775A CN100403621C (en) | 2004-11-18 | 2004-11-18 | Power supplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100947775A CN100403621C (en) | 2004-11-18 | 2004-11-18 | Power supplier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1780084A CN1780084A (en) | 2006-05-31 |
| CN100403621C true CN100403621C (en) | 2008-07-16 |
Family
ID=36770245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100947775A Active CN100403621C (en) | 2004-11-18 | 2004-11-18 | Power supplier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100403621C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101260307B1 (en) * | 2006-09-04 | 2013-05-03 | 삼성전자주식회사 | Power supply apparatus |
| US20100318814A1 (en) * | 2009-06-10 | 2010-12-16 | Quanta Computer Inc. | Power management device and point of sales terminal apparatus using thereof |
| TWI676333B (en) * | 2017-08-21 | 2019-11-01 | 仁寶電腦工業股份有限公司 | Electronic apparatus and charging method thereof |
| CN110858752A (en) * | 2018-08-24 | 2020-03-03 | 浦登有限公司 | Power adapter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043938C (en) * | 1995-02-17 | 1999-06-30 | 宏碁电脑股份有限公司 | Power supply circuit capable of eliminating memory effect of cell |
| US6049193A (en) * | 1998-12-23 | 2000-04-11 | Twinhead International Corp. | Method and device for executing a battery auto-learning |
| CN1259788A (en) * | 1998-12-16 | 2000-07-12 | 精工电子有限公司 | Power supply circuit |
-
2004
- 2004-11-18 CN CNB2004100947775A patent/CN100403621C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043938C (en) * | 1995-02-17 | 1999-06-30 | 宏碁电脑股份有限公司 | Power supply circuit capable of eliminating memory effect of cell |
| CN1259788A (en) * | 1998-12-16 | 2000-07-12 | 精工电子有限公司 | Power supply circuit |
| US6049193A (en) * | 1998-12-23 | 2000-04-11 | Twinhead International Corp. | Method and device for executing a battery auto-learning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1780084A (en) | 2006-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106787055B (en) | A kind of charging circuit, system, method and terminal | |
| CN102640076B (en) | Power converter with reduced power consumption when toggling between sleep and normal modes during device charging | |
| CN103457348B (en) | Semiconductor integrated circuit and operating method thereof | |
| US7017055B1 (en) | Hub that can supply power actively | |
| CN1881738B (en) | Charge mode control circuit and method | |
| US7345451B2 (en) | Power supply device | |
| CN109148990A (en) | Wireless charging method, electronic equipment, wireless charging device and wireless charging system | |
| CN107231012B (en) | A kind of method of quick charge, terminal, charger and system | |
| CN105098890B (en) | Charging data line and charger | |
| CN111934416B (en) | Uninterrupted power supply battery hot plug device | |
| CN108134424A (en) | The method and charging equipment for mobile phone of charging current are controlled in a kind of mobile phone charging process | |
| CN210379328U (en) | Battery charging system | |
| CN107546814A (en) | A kind of charging base and electronic product | |
| WO2019109951A1 (en) | Portable electric energy system, and measurement method for remaining electric quantity of battery pack | |
| CN109510272A (en) | A kind of charge control method and charging circuit | |
| CN100403621C (en) | Power supplier | |
| CN104767243B (en) | A kind of charging method and device and charging circuit and the charging system with the circuit | |
| CN110138024A (en) | Battery charge controller, charging system and charge control method | |
| CN206894285U (en) | One kind of multiple charging modes automatic identification control circuits | |
| CN105490333B (en) | Quickly charging battery control circuit, adapter and mobile device | |
| CN109378868B (en) | Electronic equipment power supply circuit and electronic equipment | |
| CN207368712U (en) | A kind of battery charger with temperature negative-feedback | |
| CN207234474U (en) | A kind of charging base and electronic product | |
| CN110365082A (en) | Electric power management circuit, electronic equipment and method for managing power supply | |
| CN206364531U (en) | Supply unit and charging system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |