CN213903642U - Alarm device of high-gain DC-DC converter - Google Patents
Alarm device of high-gain DC-DC converter Download PDFInfo
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- CN213903642U CN213903642U CN202022465943.5U CN202022465943U CN213903642U CN 213903642 U CN213903642 U CN 213903642U CN 202022465943 U CN202022465943 U CN 202022465943U CN 213903642 U CN213903642 U CN 213903642U
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- 239000003990 capacitor Substances 0.000 claims abstract description 48
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000004146 energy storage Methods 0.000 claims description 23
- 230000005669 field effect Effects 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
本实用新型公开一种高增益DC‑DC变换器的报警装置，包括高增益DC‑DC变换器、过压检测电路、报警开关和蜂鸣器LS；所述高增益DC‑DC变换器包括电源输入端和电源输出端；所述过压检测电路包括稳压二极管DT与光耦合器OC；所述光耦合器OC包括发光二极管与光敏三极管；所述报警开关包括三极管VT1、三极管VT2、二极管D4、电容C4、电阻R2、继电器K1和报警开关电源；所述电阻R2分别连接光敏三极管的集电极和三极管VT1的基极；所述三极管VT1的发射极连接报警开关电源；所述蜂鸣器LS连接报警开关电源。本实用新型能够快速进行过压检测并能及时告警，利于维修人员迅速处理避免对自身及负载设备造成损坏。
The utility model discloses an alarm device for a high-gain DC-DC converter, comprising a high-gain DC-DC converter, an overvoltage detection circuit, an alarm switch and a buzzer LS; the high-gain DC-DC converter includes a power supply Input terminal and power output terminal; the overvoltage detection circuit includes a zener diode DT and an optocoupler OC; the optocoupler OC includes a light-emitting diode and a phototransistor; the alarm switch includes a transistor VT1, a transistor VT2, and a diode D4 , capacitor C4, resistance R2, relay K1 and the alarm switching power supply; the resistance R2 is respectively connected to the collector of the phototransistor and the base of the triode VT1; the emitter of the triode VT1 is connected to the alarm switching power supply; the buzzer LS Connect the alarm switch power supply. The utility model can quickly carry out overvoltage detection and give an alarm in time, which is beneficial for maintenance personnel to handle quickly and avoid damage to themselves and load equipment.
Description
Technical Field
The utility model relates to a high-gain DC-DC converter technical field, more specifically relates to an alarm device of high-gain DC-DC converter.
Background
With the development of energy technology, the application of new energy such as photovoltaic and the like is greatly popularized and applied as a hot point in the current electric power industry, but the requirements of new energy systems on the power electronic technology are higher and higher. The small-capacity power supply represented by photovoltaic has the characteristics of low voltage and large quantity, and in practical application, a photovoltaic system with a lower voltage level can be incorporated into a power grid or directly provide electric energy for a user after the voltage of the photovoltaic system is raised through a high-gain DC-DC converter.
The high-gain DC-DC converter adopted in the prior art does not have an overvoltage detection function, once the overvoltage phenomenon occurs to the output voltage, maintenance personnel do not process the overvoltage phenomenon in time, a power supply is always in a starting state, and the high-gain DC-DC converter and load equipment can be damaged after a long time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can carry out overvoltage detection fast and can in time report an emergency and ask for help or increased vigilance, do benefit to the maintenance personal and handle the alarm device who avoids causing the high gain DC-DC converter of damage to self and load equipment rapidly.
In order to solve the above problems, an alarm device of a high-gain DC-DC converter is provided, which comprises a high-gain DC-DC converter, an overvoltage detection circuit, an alarm switch and a buzzer LS; the high-gain DC-DC converter comprises a power supply input end and a power supply output end; the overvoltage detection circuit comprises a voltage stabilizing diode DT and an optical coupler OC; the optical coupler OC comprises a light-emitting diode and a phototriode; the cathode DT of the voltage stabilizing diode is connected with the output end of the power supply, and the anode of the voltage stabilizing diode DT is connected with the anode of the light emitting diode; the cathode of the light emitting diode is grounded; the source electrode of the phototriode is grounded; the alarm switch comprises a triode VT1, a triode VT2, a diode D4, a capacitor C4, a resistor R2, a relay K1 and an alarm switch power supply; the resistor R2 is respectively connected with the collector of the phototriode and the base of the triode VT 1; the emitter of the triode VT1 is connected with an alarm switching power supply; the collector of the triode VT1 is respectively connected with the base of the capacitor C4 and the base of the triode VT 2; the collector of the triode VT2 is respectively connected with the anode of the diode D4 and the relay K1; the negative electrode of the diode VD is connected with an alarm switch power supply; the relay is connected with an alarm switch power supply; the emitter electrodes of the capacitor C4 and the triode VT2 are grounded; the buzzer LS is connected with an alarm switch power supply;
the high-gain DC-DC converter further comprises an input capacitor CL, an output capacitor C3, an inductor L1, an inductor L2, an inductor L3, a switch component S1, a switch component S2, a switch component S3, a diode D1, a diode D2, a diode D3, an energy storage capacitor C1 and an energy storage capacitor C2; the input capacitor CL is connected with a power supply input end; one end of the inductor L1 is connected with a power input end, and the other end of the inductor L1 is respectively connected with the switch component S1 and the anode of the diode D1; one end of the inductor L2 is connected with a power input end, the other end of the inductor L2 is respectively connected with one end of the switch component S2 and one end of the energy storage capacitor C1, and the other end of the energy storage capacitor C1 is respectively connected with the cathode of the diode D1 and the anode of the diode D2; one end of the inductor L3 is connected with a power input end, the other end of the inductor L3 is respectively connected with one end of the switch component S2 and one end of the energy storage capacitor C2, and the other end of the energy storage capacitor C2 is respectively connected with the cathode of the diode D2 and the anode of the diode D3; and the cathode of the diode D3 and the output capacitor C3 are respectively connected with the power supply output end.
In particular, the inductance values of the inductor L1, the inductor L2, and the inductor L3 are all equal.
In particular, the capacitance values of the energy storage capacitor C1 and the energy storage capacitor C2 are all equal.
Particularly, the switch assembly S1, the switch assembly S2 and the switch assembly S3 are all composed of diodes and field effect transistors; the anode of the diode is connected with the source electrode of the field effect transistor, and the cathode of the diode is connected with the drain electrode of the field effect transistor.
In particular, the capacitance C4 is 10 muF.
In particular, the transistor VT1 is model number 9014.
In particular, the model of the triode VT2 is 3DG 12.
In particular, the resistance value of the resistor R2 is 47k omega.
The utility model has the advantages that:
the utility model discloses simple structure, facilitate promotion. The high-gain DC-DC converter adopts a plurality of parallel switch capacitors, can realize wide voltage input range and high voltage gain, the output end of the power supply is connected with the overvoltage detection circuit, and the overvoltage detection circuit works when the load voltage reaches the reverse breakdown voltage of the voltage stabilizing diode, so that the precision and the reliability of the overvoltage detection circuit are effectively improved; the overvoltage detection circuit is connected with the alarm switch, and once overvoltage abnormity occurs, the buzzer which receives the electric signal can automatically alarm, so that maintenance personnel can rapidly handle the alarm to avoid damage to the buzzer and the load equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic circuit diagram according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.
As shown in fig. 1, the alarm device of the high-gain DC-DC converter of the present embodiment includes a high-gain DC-DC converter, an overvoltage detection circuit, an alarm switch, and a buzzer LS. The high-gain DC-DC converter comprises a power input end and a power output end.
The overvoltage detection circuit includes a zener diode DT and an optocoupler OC. The optical coupler OC includes a light emitting diode and a photo transistor. And the cathode DT of the voltage stabilizing diode is connected with the power output end, and the anode of the voltage stabilizing diode DT is connected with the anode of the light emitting diode. The cathode of the light emitting diode is grounded. The source of the phototriode is grounded.
The alarm switch comprises a triode VT1, a triode VT2, a diode D4, a capacitor C4, a resistor R2, a relay K1 and an alarm switch power supply. The resistor R2 is respectively connected with the collector of the phototriode and the base of the transistor VT 1. The emitter of the triode VT1 is connected with an alarm switch power supply; the collector of the triode VT1 is respectively connected with the capacitor C4 and the base of the triode VT 2. The collector of the transistor VT2 is connected to the anode of the diode D4 and the relay K1, respectively. The negative electrode of the diode VD is connected with an alarm switch power supply. The relay is connected with the alarm switch power supply. The emitter of the capacitor C4 and the transistor VT2 are grounded. The buzzer LS is connected with the alarm switch power supply. The capacitance C4 is 10 muF. The transistor VT1 is of type 9014. The model of the triode VT2 is 3DG 12. The resistance of the resistor R2 is 47k Ω.
The high-gain DC-DC converter further comprises an input capacitor CL, an output capacitor C3, an inductor L1, an inductor L2, an inductor L3, a switch component S1, a switch component S2, a switch component S3, a diode D1, a diode D2, a diode D3, an energy storage capacitor C1 and an energy storage capacitor C2. The input capacitor CL is connected to the power input terminal. One end of the inductor L1 is connected to the power input terminal, and the other end is connected to the switch module S1 and the anode of the diode D1. One end of the inductor L2 is connected to the power input end, the other end is connected to one end of the switch module S2 and one end of the energy storage capacitor C1, and the other end of the energy storage capacitor C1 is connected to the cathode of the diode D1 and the anode of the diode D2. One end of the inductor L3 is connected to the power input end, the other end is connected to one end of the switch module S2 and one end of the energy storage capacitor C2, and the other end of the energy storage capacitor C2 is connected to the cathode of the diode D2 and the anode of the diode D3. The cathode of the diode D3 and the output capacitor C3 are connected to the power output terminal, respectively, and set at C3=470 uH. Inductance L1, inductance L2, inductance L3's inductance value equals, the embodiment of the utility model provides an establish L1= L2= L3=125 uH. The capacitance values of the energy storage capacitor C1 and the energy storage capacitor C2 are equal, and C1= C2=10uF is set. The switch module S1, the switch module S2 and the switch module S3 are all composed of diodes and field effect transistors. The anode of the diode is connected with the source electrode of the field effect transistor, and the cathode of the diode is connected with the drain electrode of the field effect transistor. When input power UL =10V, adopt the switch tube drive phase place to differ 120 degrees in proper order, the duty cycle is 0.7, and output voltage =100V, explains the utility model discloses can obtain higher voltage gain.
The utility model discloses a theory of operation and application method:
use the utility model discloses the time, insert the power at power input end, at the required load of power output end installation, can use. When this with novel overvoltage anomaly appears, buzzer just can automatic buzzing report to the police.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes and modifications can be made by the owner within the scope of the appended claims, and the protection scope of the present invention should not be exceeded by the claims.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022465943.5U CN213903642U (en) | 2020-10-30 | 2020-10-30 | Alarm device of high-gain DC-DC converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022465943.5U CN213903642U (en) | 2020-10-30 | 2020-10-30 | Alarm device of high-gain DC-DC converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213903642U true CN213903642U (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022465943.5U Expired - Fee Related CN213903642U (en) | 2020-10-30 | 2020-10-30 | Alarm device of high-gain DC-DC converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213903642U (en) |
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2020
- 2020-10-30 CN CN202022465943.5U patent/CN213903642U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210806 |