CN204304779U - The bidirectional DC voltage converter of ups system - Google Patents
The bidirectional DC voltage converter of ups system Download PDFInfo
- Publication number
- CN204304779U CN204304779U CN201520033313.7U CN201520033313U CN204304779U CN 204304779 U CN204304779 U CN 204304779U CN 201520033313 U CN201520033313 U CN 201520033313U CN 204304779 U CN204304779 U CN 204304779U
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- CN
- China
- Prior art keywords
- fet
- ups system
- voltage converter
- bidirectional
- battery
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- 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.)
- Expired - Fee Related
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- Dc-Dc Converters (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The bidirectional DC voltage converter of ups system, it comprises FET Q1, FET Q2 and inductance L 1; This FET Q1 and the grid of FET Q2 are connected data terminal PWM1 and the data terminal PWM2 of the controller of ups system respectively; The source electrode of FET Q1 connects the drain electrode of FET Q2, is also connected the positive terminal BAT+ of the battery of ups system by inductance L 1; The drain electrode of FET Q1 connects the dc bus positive terminal BUSV of ups system; The source electrode of FET Q2 connects negative pole end BAT-and the dc bus negative pole end BUSN of battery.The utility model realizes the discharge and recharge of battery by bi-directional voltage conversion, and circuit is simple, and cost is low.
Description
Technical field
The utility model relates to a kind of bidirectional DC voltage converter of ups system.
Background technology
In UPS (interruptible power system, uninterrupted power source) system, DC voltage converter is absolutely necessary in the discharge and recharge of battery, the input termination battery of DC voltage converter, exports termination dc bus.When commercial power interruption or when exceeding voltage or frequency range, battery provides electric energy to output loading by the DC voltage converter of booster type, and when city power recovery is normal, electric energy then supplies to charge a battery by the DC voltage converter of voltage-dropping type.Existing ups system often adopts Boost DC voltage changer or step-down type dc voltage changer simultaneously, increases system complexity.Also have ups system to adopt buck-boost type DC voltage converter, but existing buck-boost type DC voltage converter not only internal structure is complicated, and cost is high, expensive.
Utility model content
For the deficiencies in the prior art, the utility model is intended to the bidirectional DC voltage converter providing a kind of ups system solved the problems of the technologies described above.
For achieving the above object, the utility model adopts following technical scheme:
A bidirectional DC voltage converter for ups system, it comprises FET Q1, FET Q2 and inductance L 1;
This FET Q1 and the grid of FET Q2 are connected data terminal PWM1 and the data terminal PWM2 of the controller of ups system respectively; The source electrode of FET Q1 connects the drain electrode of FET Q2, is also connected the positive terminal BAT+ of the battery of ups system by inductance L 1; The drain electrode of FET Q1 connects the dc bus positive terminal BUSV of ups system; The source electrode of FET Q2 connects negative pole end BAT-and the dc bus negative pole end BUSN of battery.
Preferably, bidirectional DC voltage converter also comprises an electric capacity C1, and electric capacity C1 is connected between the positive terminal BAT+ of battery and negative pole end BAT-.
Preferably, bidirectional DC voltage converter also comprises an electric capacity C2, and electric capacity C2 is connected between dc bus positive terminal BUSV and negative pole end BUSN.
The utility model realizes the discharge and recharge of battery by bi-directional voltage conversion, and circuit is simple, and cost is low.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the better embodiment of the bidirectional DC voltage converter of the utility model ups system.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the utility model is described further:
Refer to Fig. 1, the utility model relates to a kind of bidirectional DC voltage converter of ups system, and its better embodiment comprises FET Q1, FET Q2, inductance L 1, electric capacity C1 and electric capacity C2.
This FET Q1 and the grid of FET Q2 are connected data terminal PWM1 and the data terminal PWM2 of the controller (not shown) of ups system respectively; The source electrode of FET Q1 connects the drain electrode of FET Q2, is also connected the positive terminal BAT+ of the battery of ups system by inductance L 1; The drain electrode of FET Q1 connects the dc bus positive terminal BUSV of ups system; The source electrode of FET Q2 connects negative pole end BAT-and the dc bus negative pole end BUSN of battery, with ground connection.
Electric capacity C1 is connected between the positive terminal BAT+ of battery and negative pole end BAT-, and electric capacity C2 is connected between dc bus positive terminal BUSV and negative pole end BUSN.Electric capacity C1 and electric capacity C2 all strobes.
Below the operation principle of this preferred embodiment is described:
When civil power power-off or the power supply trouble of ups system, controller, is ended to FET Q1 to make FET Q1 by its data terminal PWM1 output low level signal.Meanwhile, controller exports PWM modulation signal to FET Q2 by its data terminal PWM2, makes battery, inductance L 1 and FET Q2 form a Switching Power Supply, to power to output loading.
When the mains-supplied of ups system is recovered normal, controller, is ended to FET Q2 to make FET Q2 by its data terminal PWM2 output low level signal.Meanwhile, controller exports PWM modulation signal FET Q1 by its data terminal PWM1, makes dc bus, FET Q1 and inductance L 1 form a charge power supply, charges a battery.
So, namely by the conversion of this circuit realiration bi-directional voltage, circuit is simple, and cost is low.
For a person skilled in the art, according to technical scheme described above and design, other various corresponding change and distortion can be made, and all these change and distortion all should belong within the protection domain of the utility model claim.
Claims (3)
1. a bidirectional DC voltage converter for ups system, is characterized in that: it comprises FET Q1, FET Q2 and inductance L 1;
This FET Q1 and the grid of FET Q2 are connected data terminal PWM1 and the data terminal PWM2 of the controller of ups system respectively; The source electrode of FET Q1 connects the drain electrode of FET Q2, is also connected the positive terminal BAT+ of the battery of ups system by inductance L 1; The drain electrode of FET Q1 connects the dc bus positive terminal BUSV of ups system; The source electrode of FET Q2 connects negative pole end BAT-and the dc bus negative pole end BUSN of battery.
2. the bidirectional DC voltage converter of ups system as claimed in claim 1, is characterized in that: bidirectional DC voltage converter also comprises an electric capacity C1, and electric capacity C1 is connected between the positive terminal BAT+ of battery and negative pole end BAT-.
3. the bidirectional DC voltage converter of ups system as claimed in claim 1 or 2, is characterized in that: bidirectional DC voltage converter also comprises an electric capacity C2, and electric capacity C2 is connected between dc bus positive terminal BUSV and negative pole end BUSN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520033313.7U CN204304779U (en) | 2015-01-16 | 2015-01-16 | The bidirectional DC voltage converter of ups system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520033313.7U CN204304779U (en) | 2015-01-16 | 2015-01-16 | The bidirectional DC voltage converter of ups system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204304779U true CN204304779U (en) | 2015-04-29 |
Family
ID=53110286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520033313.7U Expired - Fee Related CN204304779U (en) | 2015-01-16 | 2015-01-16 | The bidirectional DC voltage converter of ups system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204304779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3930162A3 (en) * | 2020-06-25 | 2022-03-09 | Samsung Electronics Co., Ltd. | Bi-directional voltage converter of smart card and smart card including the same |
-
2015
- 2015-01-16 CN CN201520033313.7U patent/CN204304779U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3930162A3 (en) * | 2020-06-25 | 2022-03-09 | Samsung Electronics Co., Ltd. | Bi-directional voltage converter of smart card and smart card including the same |
| US11599760B2 (en) | 2020-06-25 | 2023-03-07 | Samsung Electronics Co., Ltd. | Bi-directional voltage converter of smart card and smart card including the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20190116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |