CN2651822Y - Back-up unitary computer power supply - Google Patents
Back-up unitary computer power supply Download PDFInfo
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- CN2651822Y CN2651822Y CN 03274595 CN03274595U CN2651822Y CN 2651822 Y CN2651822 Y CN 2651822Y CN 03274595 CN03274595 CN 03274595 CN 03274595 U CN03274595 U CN 03274595U CN 2651822 Y CN2651822 Y CN 2651822Y
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Abstract
The utility model relates to a support integrated computer power supply, which is designed for resolves the problems as big bulk and inconvenient utilization caused by the separated structure of the existing ATX power supply and UPS. The computer power supply of the utility model comprises an ATX power supply circuit, a charging circuit, an inverting circuit and a switching circuit; wherein, the inverting circuit transfers the battery voltage into the voltage similar with that of the commercial electricity alternating current; one input of the switching circuit is an inverter output voltage and another input is commercial electricity AC; while the output end of the switching circuit is connected to the AC input end of the ATX power supply circuit. When the commercial electricity AC is in normal, the switch circuit takes the commercial electricity AC as the output voltage, and when the commercial electricity AC is in abnormal, the switching circuit takes the voltage inputted by the inverting circuit as the output voltage; wherein, the ATX power supply circuit, the charging circuit, the inverting circuit and the switching circuit are all positioned inside the same standard power supply shell; the whole computer power supply is small in bulk, which can be mounted directly inside the computer machine case, thus bringing great convenience for assembly and utilization.
Description
Technical field
The utility model relates to computer power supply, more particularly, relates to the integrated computer power supply of a kind of backup type.
Background technology
Existing computer power supply is ATX (ATX is a kind of new PC mainboard framework standard) power supply normally.Its major function with civil power exchange be converted to computer operation required ± 12V, ± direct supplys such as 5V, 3.3V, 5VSB.Since ATX be by civil power as the input (China is the 220V alternating current), if city's electrical anomaly, when for example power outage taking place, computing machine can't be worked.
Present solution is to adopt UPS (uninterrupted power source), with UPS as standby power supply, when civil power just often by mains-supplied; When city's electrical anomaly, then change inverter power supply by UPS.
But ATX power supply of the prior art and UPS are separately independently, and the ATX power supply is installed in the computer cabinet, and UPS generally is placed on cabinet.Its shortcoming is the manufacturing cost height, need take more space, and uses very inconvenient.
The utility model content
At the above-mentioned defective of prior art, the utility model to solve the ATX power supply of active computer and UPS be isolating construction the cost height, the volume that bring big, use problem such as inconvenience, provide a kind of backup type integrated computer power supply.
The technical scheme that its technical matters that solves the utility model adopts is: construct the integrated computer power supply of a kind of backup type, comprising the civil power of input being exchanged the ATX power circuit that is converted to the required working power of computing machine, wherein also comprise inverter circuit and commutation circuit; Described inverter circuit is converted to the cell voltage of input and exports after exchanging essentially identical voltage with civil power; The output terminal of a described inverter of input termination of described commutation circuit, another input end can connect civil power and exchange, and the output terminal of commutation circuit is connected to the ac input end of described ATX power circuit; Described commutation circuit exchanges just often at civil power and exchanges as its output voltage with civil power, exchanges the voltage imported with inverter circuit when unusual as its output voltage at civil power; Described ATX power circuit, inverter circuit and commutation circuit are installed in the same reference power supply housing.
In the integrated computer power supply of backup type of the present utility model, comprise also exchanging being connected that be used for charging circuit that battery is charged, described charging circuit is also adorned in the described reference power supply housing with civil power.
Wherein, described ATX power circuit, charging circuit, inverter circuit and commutation circuit can be located on two or the polylith printed circuit board (PCB), and connect as one by lead; Also they can be located on the same printed circuit board.
Scheme of the present utility model is equivalent to existing computer ATX electric power circuit and UPS are integrated, thereby forms the integrated computer power supply of backup type, when city's electrical anomaly, can be computing machine continual power supply is provided.Owing to adopted integrated design, the volume of the integrated computer power supply of whole backup type is small and exquisite, can directly be contained in the ATX computer cabinet, gives assembling and use all to bring great convenience.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the circuit connection diagram of charging circuit in preferred embodiment of the utility model;
Fig. 3 is the circuit connection diagram of inverter circuit in preferred embodiment of the utility model;
Fig. 4 is the circuit connection diagram of commutation circuit in preferred embodiment of the utility model;
Fig. 5 is the circuit connection diagram of ATX power circuit in preferred embodiment of the utility model.
Embodiment
Figure 1 shows that theory diagram of the present utility model, comprising ATX power circuit, battery, charging circuit, inverter circuit and commutation circuit.Two-wire among the figure is that ac signal, single line are dc signal, and the arrow direction is the voltage transmission direction.Wherein, the ATX power circuit can adopt the ATX power circuit in the common computer power supply, is used for the civil power interchange is converted to the required working power of computing machine.Charging circuit can exchange with civil power and be connected, and is used for battery is charged.And inverter circuit is used for cell voltage is converted to and exchanges essentially identical alternating voltage with civil power.Commutation circuit then is used to switch, and when civil power exchanges when unusual, exchanges input power supply as the ATX power circuit with civil power; When civil power exchanges just often with the output voltage of the inverter circuit input power supply as the ATX power circuit.
In the utility model, ATX power circuit, charging circuit, inverter circuit and commutation circuit are installed in the same reference power supply housing.During specific design, ATX power circuit, charging circuit, inverter circuit and commutation circuit can be located on two or the polylith printed circuit board (PCB), and connect as one by lead; Also they can be located on the same printed circuit board.Bottom in the reference power supply housing is fixed NI-G (or ni-mh) battery with suitable mode, can reach the purpose of the integrated computer power supply of backup type.
As Fig. 2, Fig. 3, Fig. 4 and Fig. 5 is the circuit connection diagram of charging circuit, inverter circuit, commutation circuit and ATX power circuit in preferred embodiment of the utility model.To describe respectively below.
One, charging circuit
Charging circuit among Fig. 2 can charge to NI-G, Ni-MH battery or lead-acid accumulator.And when charging is saturated, stop automatically charging.Its charging current is adjustable continuously from 0 to 1.5A.The nominal voltage of battery is 14.4V.
As can be seen from Figure 2, when the undertension at battery BAT1 two ends, the partial pressure value of resistance R 103 sliding ends can not make triode Q105 conducting, Q104 is by the R109 conducting, thereby drive Q101, Q102, Q103 conducting, D106 is luminous, and the expression work at present is in charged state.The sliding end of regulating R107 can change the size of charging current.Along with the battery both end voltage rises to certain value (when promptly being full of electricity) gradually, the partial pressure value of R103 sliding end makes the Q105 conducting, and Q104 ends, and Q101, Q102, Q103 end, and D106 extinguishes, and the indication charging finishes.Q102 is by R104, and the Voltage Feedback amount when improving different electric current improves circuit stability.
Two, inverter circuit
As shown in Figure 3, the DC voltage of being drawn by the both positive and negative polarity of battery among Fig. 2 is introduced through terminal A, B.Wherein U201 cooperates with crystal oscillator Y201, is used to produce 100HZ pulse accurately, becomes the 50HZ square wave through U202JK trigger two divided-frequency, and driving power pipe Q201, Q202 alternate conduction, DC voltage is become the 50HZ square wave, boost to the 220V square wave through transformer B201 again, export through terminal C, D.Its U203 is used for the 14.4V voltage of battery output is become 5V voltage, as the working power of U201, U202.
U201 among Fig. 3 is the program-controlled frequency divider of CMOS, and its model is 5G8630.Frequency dividing ratio in 1～30000, have 57 kinds available, external 30KHZ crystal oscillator Y201.The 9th pin output frequency of U201 is that 30KHZ～0.001HZ is controlled, and degree of stability is better than 30PPM.Crystal oscillator Y201 all can work in 2MHZ, and this circuit adopts the 30KHZ vibration, meets voltage VDD (being noble potential) at 3,4,6 pin, and 2,5,7 pin meet VSS (being electronegative potential), and frequency division gets 100HZ output for 300 times.All control pins all have protective resistance, and therefore, can open a way (unsettled) uses.
U202 among Fig. 3 is two JK flip-flop, and its model is 74HC109, the JK end link to each other d type flip flop, again the 9th pin is fed back to input end, just become the T trigger of two divided-frequency.
Q201, Q202 are the BD651 high power valves, two pipe conductings in turn, and saturation voltage drop UCES ≈ 1V adds switch moment consume, total actual power loss is about P ≈ UCES*IC=3.33W, needs radiation fin.
Output transformer can be used the power transformer of 220V 2*12V, and 2*12V is as elementary, and former 220V uses as secondary output.
Wherein, Q201, Q202 want enough thick (more than the 2MM) to the line of the positive and negative end of C205, B201 and power supply.
Three, power supply switch circuit
As shown in Figure 4, introduce through terminal C, D by the alternating voltage that the transformer B201 among Fig. 3 draws, civil power (～220V) alternating current with inverter circuit output switches by relay J 301.
When the civil power normal power supply, relay coil gets electric adhesive, and civil power is powered to the ATX power circuit by normally opened contact.
When the civil power power down, the relay coil dead electricity discharges, and the normally closed contact closure is sent the alternating current of inverter circuit output into the ATX power circuit immediately, guarantees uninterrupted power supply.Capacitor C301 among the figure is used for discharging the energy of a charge that C301 stores to the ATX power circuit when switching, and can not interrupt because of switching with the work that guarantees the ATX power supply.
Four, ATX power circuit
As shown in Figure 5, the ATX power circuit can be used for reference the two-piece type power management chip realization high reliability design of current trend.The AC power of being exported by commutation circuit is introduced through E, F terminal, through inductance T1, T5, and the filtering circuit formed of C1, C2, C3 the power supply spike is carried out filtering, guarantee the cleaning of power supply.The rectifier bridge that D21～D24 forms, by T elimination alternating component, C5, C6 form equalizing capacitance, R2, R3 form equalizing resistance, derive the pulsating current of about 300V in the center of equalizing resistance and deliver to T3, become the voltage that is fit to standard through transformation and secondary many group windings, at last by grouping rectification, filtering circuit obtain ± 12V, ± the required assigned voltages of computer operation such as 5V, 3.3V and 5VSB.
The auxiliary servo circuit of ATX power supply adopts twin-core sheet TL494 (IC1) and LM393 (IC2) to form, and can finish in good time power supply, overcurrent protection, overvoltage protection, POWER GOOD signal is provided, cuts off a series of functions such as current supply circuit when brownout.
Claims (7)
1, the integrated computer power supply of a kind of backup type comprising the civil power of input being exchanged the ATX power circuit that is converted to the required working power of computing machine, is characterized in that,
Also comprise inverter circuit and commutation circuit; Described inverter circuit is converted to the cell voltage of input and exports after exchanging essentially identical voltage with civil power;
The output terminal of a described inverter of input termination of described commutation circuit, another input end can connect civil power and exchange, and the output terminal of commutation circuit is connected to the ac input end of described ATX power circuit; Described commutation circuit exchanges just often at civil power and exchanges as its output voltage with civil power, exchanges the voltage imported with inverter circuit when unusual as its output voltage at civil power;
Described ATX power circuit, inverter circuit and commutation circuit are installed in the same reference power supply housing.
2, the integrated computer power supply of backup type according to claim 1 is characterized in that, also comprises exchanging with civil power being connected, and is used for the charging circuit that battery is charged; Described charging circuit also is installed in the described reference power supply housing.
3, the integrated computer power supply of backup type according to claim 2 is characterized in that, in the described charging circuit, comprises transformer B101 and rectifier bridge (D101-104); Between the positive output end of described rectifier bridge and negative output terminal, four branch roads are arranged, wherein,
What connect successively in first branch road is resistance R 103, the resistance R 102 of band tap, collector and emitter and the resistance R 104 of triode Q102; The collector of triode Q102 is also in parallel with the collector of triode Q101, and the emission collection of triode Q101 is connected to the base stage of triode Q102;
What connect successively in second branch road is emitter and collector, diode D106, the resistance R 106 of triode Q103, the resistance R 107 and the resistance R 108 of band tap; Be parallel with resistance 105 at diode D106 two ends; The tap terminals of resistance R 107 is connected to the base stage of triode Q101; Also be connected to and resistance R 107, R108 voltage stabilizing diode D107 in parallel;
What connect successively in the 3rd branch road is emitter and collector and the resistance R 110 of resistance R 109, triode Q104; The emitter of triode Q104 is also connected to the base stage of triode Q103;
What connect successively in the 4th branch road is the emitter and collector of triode Q105, and the collector of triode Q105 is also connected to the base stage of triode Q104; The base stage of triode Q105 is connected to the tap terminals of resistance R 103;
The collector of the positive output end of described rectifier bridge and triode Q102 is respectively the positive and negative end of charge power supply.
4, according to the integrated computer power supply of each described backup type among the claim 1-3, it is characterized in that, in described inverter circuit, cooperate with crystal oscillator Y201, be used to produce 100HZ pulse accurately by the program-controlled frequency divider U201 of CMOS; The two divided-frequency that is connected into by two JK flip-flop U202 becomes 10050HZ into the 50HZ square wave again, and driving power pipe Q201, Q202 alternate conduction, and the DC voltage of input is become the 50HZ square wave; Boost to the 220V square wave through transformer B201 again, export through terminal C, D.
5, according to the integrated computer power supply of each described backup type among the claim 1-3, it is characterized in that, comprise relay J 301 and storage capacitor C301 in the described commutation circuit; Two incoming lines that civil power exchanges are connected to the two ends of relay coil, and receive a pair of normally closed contact of relay; Two incoming lines of inverter circuit then are connected to a pair of normally opened contact of relay; After the other end of described normally opened contact and the other end of normally closed contact are in parallel respectively, be connected to the ac input end of ATX power circuit through two output lines, described capacitor C 301 is connected between described two output lines.
6, according to the integrated computer power supply of each described backup type among the claim 1-3, it is characterized in that, described ATX power circuit, charging circuit, inverter circuit and commutation circuit are located on two or the polylith printed circuit board (PCB), and interconnect by corresponding lead.
7, according to the integrated computer power supply of each described backup type among the claim 1-3, it is characterized in that described ATX power circuit, charging circuit, inverter circuit and commutation circuit are located on the same printed circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03274595 CN2651822Y (en) | 2003-09-17 | 2003-09-17 | Back-up unitary computer power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03274595 CN2651822Y (en) | 2003-09-17 | 2003-09-17 | Back-up unitary computer power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2651822Y true CN2651822Y (en) | 2004-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03274595 Expired - Fee Related CN2651822Y (en) | 2003-09-17 | 2003-09-17 | Back-up unitary computer power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2651822Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103124103A (en) * | 2012-11-22 | 2013-05-29 | 许继集团有限公司 | Electricity utilization system of 10KV station of converter station and mutual switching and reverse switching methods of electricity utilization system through spare power automatic switching |
| CN106297694A (en) * | 2016-08-29 | 2017-01-04 | 合肥惠科金扬科技有限公司 | A kind of TFT LCD liquid crystal display screen display delayed control method |
-
2003
- 2003-09-17 CN CN 03274595 patent/CN2651822Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103124103A (en) * | 2012-11-22 | 2013-05-29 | 许继集团有限公司 | Electricity utilization system of 10KV station of converter station and mutual switching and reverse switching methods of electricity utilization system through spare power automatic switching |
| CN103124103B (en) * | 2012-11-22 | 2015-07-01 | 许继集团有限公司 | Electricity utilization system of 10KV station of converter station and mutual switching and reverse switching methods of electricity utilization system through spare power automatic switching |
| CN106297694A (en) * | 2016-08-29 | 2017-01-04 | 合肥惠科金扬科技有限公司 | A kind of TFT LCD liquid crystal display screen display delayed control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |