CN204304779U - The bidirectional DC voltage converter of ups system - Google Patents

The bidirectional DC voltage converter of ups system Download PDF

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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
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.)
Expired - Fee Related
Application number
CN201520033313.7U
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Chinese (zh)
Inventor
彭富
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENZHEN HELIOR TECHNOLOGY Co Ltd
Original Assignee
SHENZHEN HELIOR TECHNOLOGY Co Ltd
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Filing date
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Priority to CN201520033313.7U priority Critical patent/CN204304779U/en
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Publication of CN204304779U publication Critical patent/CN204304779U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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

The bidirectional DC voltage converter of ups system
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.
CN201520033313.7U 2015-01-16 2015-01-16 The bidirectional DC voltage converter of ups system Expired - Fee Related CN204304779U (en)

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

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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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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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