CN215452809U - High-voltage power supply with wide input voltage range - Google Patents
High-voltage power supply with wide input voltage range Download PDFInfo
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- CN215452809U CN215452809U CN202121467691.8U CN202121467691U CN215452809U CN 215452809 U CN215452809 U CN 215452809U CN 202121467691 U CN202121467691 U CN 202121467691U CN 215452809 U CN215452809 U CN 215452809U
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Abstract
The utility model discloses a high-voltage power supply with a wide input voltage range, which comprises an input module, a rectifying and filtering module, a comparison module, a driving module, a boosting module, a converter module, an output module and a feedback module, wherein the rectifying and filtering module is used for rectifying and filtering an alternating-current power supply output by the input module, the comparison module is used for comparing the voltage output by the rectifying and filtering module with a high-voltage preset value, the driving module is used for driving the boosting module and the converter module to work, and the feedback module is used for feeding back the voltage obtained by the output module to the converter module.
Description
Technical Field
The utility model relates to the technical field of power supplies, in particular to a high-voltage power supply with a wide input voltage range.
Background
Most of existing power supplies adopt linear voltage-stabilized power supplies, however, although linear voltage-stabilized power supplies have the advantages of stable output voltage, strong reliability and the like, voltage transformation is required to be carried out by using a power frequency transformer.
Therefore, it is an urgent need to solve the above problems by providing a new technical solution.
SUMMERY OF THE UTILITY MODEL
Accordingly, the present invention is directed to a high voltage power supply with a wide input voltage range, so as to solve the above-mentioned problems.
In order to achieve the purpose, the utility model provides the following technical scheme:
a high-voltage power supply with a wide input voltage range comprises an input module, a rectifying and filtering module, a comparison module, a driving module, a boosting module, a converter module, an output module and a feedback module.
In the above scheme, the input module is used for inputting an ac power.
In the above scheme, the rectifying and filtering module is connected to the input module, and the rectifying and filtering module is configured to rectify and filter the ac power output by the input module.
In the above scheme, the comparison module is connected to the rectification filter module, and the comparison module is configured to compare the voltage output by the rectification filter module with a high-voltage preset value.
In the above scheme, the driving module is connected to the comparing module, the boosting module and the converter module are both connected to the driving module, the converter module is connected to the boosting module, and the driving module is configured to drive the boosting module and the converter module to operate.
In the above scheme, the output module is connected to the converter module, the feedback module is connected to the output module and the converter module, and the feedback module is configured to feed back the voltage obtained by the output module to the converter module.
In the above solution, the rectifying and filtering module includes an EMI filter circuit and a rectifying circuit, the EMI filter circuit is connected to the rectifying circuit, the EMI filter circuit includes a first capacitor C1, a first inductor L1 and a second capacitor C2, a first end of the first capacitor C1 and a first end of the first inductor L1 are both connected to the positive electrode of the output terminal of the input module, a second end of the first capacitor C1 is connected to ground, a first end of the second capacitor C2 is connected to the second end of the first inductor L1, and a second end of the second capacitor C2 is connected to ground; the rectifying circuit comprises a rectifying bridge B and a third capacitor C3, wherein the first end of the rectifying bridge B is connected with the first end of the second capacitor C2, the second end of the rectifying bridge B is connected with the second end of the second capacitor C2, the first end of the third capacitor C3 is connected with the third end of the rectifying bridge B, and the second end of the third capacitor C3 is connected with the fourth end of the rectifying bridge B and connected to the ground.
In the above scheme, the comparison module compares the voltage output by the rectification filter module with a high-voltage preset value by using a hysteresis comparator.
In the above scheme, the driving module uses a relay to drive the boost module and the converter module to operate.
In the above solution, the boost module includes a boost input circuit and a boost chip, the boost input circuit includes an NMOS transistor N and a fourth capacitor C4, a drain of the NMOS transistor N is connected to the output terminal of the driving module, a first end of the fourth capacitor C4 is connected to a source of the NMOS transistor N, and a gate of the NMOS transistor N and a second end of the fourth capacitor C4 are both connected to ground; the input end of the boost chip is connected with the first end of the fourth capacitor C4.
In the above solution, the boost module further includes a boost output circuit, the boost output circuit includes a fifth capacitor C5, a transistor Q, a first diode D1, a sixth capacitor C6, a first resistor R1, a seventh capacitor C7, a second resistor R2, and a second diode D2, a first end of the fifth capacitor C5 is connected to the output terminal of the boost chip, a base of the transistor Q is connected to a second end of the fifth capacitor C5, an emitter of the transistor Q is connected to ground, an anode of the first diode D1 is connected to a collector of the transistor Q, a first end of the sixth capacitor C6 is connected to a cathode of the first diode D1, a second end of the sixth capacitor C6 is connected to ground, a first end of the first resistor R1 is connected to a first end of the sixth capacitor C6, a second end of the first resistor R1 is connected to ground, a first end of the seventh capacitor C7 is connected to the first end of the first resistor R1, a second end of the seventh capacitor C7 is connected to ground, a first end of the second resistor R2 is connected to the first end of the seventh capacitor C7, an anode of the second diode D2 is connected to the second end of the second resistor R2, and a cathode of the second diode D2 is connected to ground.
In the above scheme, the converter module is configured to convert the voltage output by the rectifying and filtering module and the voltage output by the boosting module into a required voltage, and the converter module employs a full-bridge type converter transformer.
In the above scheme, the feedback module includes a photoelectric coupler, an adjustable voltage stabilizer and a feedback resistance circuit having a plurality of feedback resistances, the photoelectric coupler is connected with the adjustable voltage stabilizer, and both the photoelectric coupler and the adjustable voltage stabilizer are connected with the feedback resistance circuit.
In conclusion, the beneficial effects of the utility model are as follows: the multiple modules are adopted to obtain the voltage required by the load through rectification filtering, rectification filtering output comparison, boosting, conversion and output feedback of alternating current input, and the method has the characteristics of wide voltage adjustment range, high adjustment precision and high-voltage output.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
FIG. 1 is a schematic diagram of the high voltage power supply with a wide input voltage range according to the present invention.
Fig. 2 is a circuit diagram of a rectifying and filtering module according to the present invention.
FIG. 3 is a circuit diagram of the boost module of the present invention.
Fig. 4 is a schematic diagram of the feedback module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
As shown in fig. 1, the high-voltage power supply with a wide input voltage range of the present invention includes an input module, a rectifying and filtering module, a comparing module, a driving module, a boosting module, a converter module, an output module, and a feedback module.
The connection relationship between the above modules of the present invention will be further described in detail with reference to the accompanying drawings.
Further, the input module is used for inputting an alternating current power supply; the rectification filtering module is connected with the input module and is used for rectifying and filtering the alternating current power supply output by the input module; the comparison module is connected with the rectification filter module and is used for comparing the voltage output by the rectification filter module with a high-voltage preset value; the driving module is connected with the comparison module, the boosting module and the converter module are both connected with the driving module, the converter module is connected with the boosting module, and the driving module is used for driving the boosting module and the converter module to work; the output module is connected with the converter module, the feedback module is connected with the output module and the converter module, and the feedback module is used for feeding back the voltage acquired by the output module to the converter module.
As shown in fig. 2, the rectification filter module includes an EMI filter circuit and a rectification circuit, the EMI filter circuit is connected to the rectification circuit, the EMI filter circuit includes a first capacitor C1, a first inductor L1 and a second capacitor C2, a first end of the first capacitor C1 and a first end of the first inductor L1 are both connected to the positive electrode of the output terminal of the input module, a second end of the first capacitor C1 is connected to ground, a first end of the second capacitor C2 is connected to the second end of the first inductor L1, and a second end of the second capacitor C2 is connected to ground; the rectifying circuit comprises a rectifying bridge B and a third capacitor C3, wherein the first end of the rectifying bridge B is connected with the first end of the second capacitor C2, the second end of the rectifying bridge B is connected with the second end of the second capacitor C2, the first end of the third capacitor C3 is connected with the third end of the rectifying bridge B, and the second end of the third capacitor C3 is connected with the fourth end of the rectifying bridge B and connected to the ground.
Further, the comparison module adopts a hysteresis comparator to compare the voltage output by the rectification filter module with a high-voltage preset value.
Further, the driving module drives the boosting module and the converter module to work by adopting a relay.
In this embodiment, when the comparison module obtains that the voltage output by the rectifying and filtering module is smaller than the high-voltage preset value, the driving module drives the boosting module to boost the voltage output by the rectifying and filtering module to the high-voltage preset value, and then the converter module converts the voltage output by the boosting module into the required voltage to supply to the load; when the voltage output by the rectifying and filtering module is higher than the high-voltage preset value, the driving module drives the converter module to convert the voltage output by the rectifying and filtering module into the voltage required by the load.
As shown in fig. 3, the boost module includes a boost input circuit and a boost chip, the boost input circuit includes an NMOS transistor N and a fourth capacitor C4, a drain of the NMOS transistor N is connected to the output terminal of the driving module, a first end of the fourth capacitor C4 is connected to a source of the NMOS transistor N, and a gate of the NMOS transistor N and a second end of the fourth capacitor C4 are both connected to ground; the input end of the boost chip is connected with the first end of the fourth capacitor C4.
Further, the boost module further includes a boost output circuit, the boost output circuit includes a fifth capacitor C5, a transistor Q, a first diode D1, a sixth capacitor C6, a first resistor R1, a seventh capacitor C7, a second resistor R2, and a second diode D2, a first end of the fifth capacitor C5 is connected to the output terminal of the boost chip, a base of the transistor Q is connected to a second end of the fifth capacitor C5, an emitter of the transistor Q is connected to ground, an anode of the first diode D1 is connected to a collector of the transistor Q, a first end of the sixth capacitor C6 is connected to a cathode of the first diode D1, a second end of the sixth capacitor C6 is connected to ground, a first end of the first resistor R1 is connected to a first end of the sixth capacitor C6, a second end of the first resistor R1 is connected to ground, a first end of the seventh capacitor C7 is connected to the first end of the first resistor R1, a second end of the seventh capacitor C7 is connected to ground, a first end of the second resistor R2 is connected to the first end of the seventh capacitor C7, an anode of the second diode D2 is connected to the second end of the second resistor R2, and a cathode of the second diode D2 is connected to ground.
In this embodiment, the first end of the first resistor R1 is connected to the output end of the boost output circuit.
In this embodiment, the fourth capacitor C4 and the seventh capacitor C7 are polar capacitors, the transistor Q is a PNP-type transistor, the second diode D2 is a light emitting diode, the second diode D2 is used for indicating the output state of the boost output circuit, and the second diode D2 is turned on when the output is normal.
Further, the converter module is configured to convert the voltage output by the rectifying and filtering module and the voltage output by the boosting module into a required voltage, and the converter module employs a full-bridge type converter transformer.
As shown in fig. 4, the feedback module includes a photocoupler, an adjustable voltage regulator, and a feedback resistance circuit having a plurality of feedback resistors, the photocoupler is connected to the adjustable voltage regulator, and both the photocoupler and the adjustable voltage regulator are connected to the feedback resistance circuit.
In this embodiment, the voltage obtained by the output module is fed back to the converter module, and the converter module adjusts the voltage output to the output module according to the voltage obtained by the output module until the voltage reaches the voltage required by the output module, thereby improving the adjustment precision.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A wide input voltage range high voltage power supply, comprising: the device comprises an input module, a rectifying and filtering module, a comparison module, a driving module, a boosting module, a converter module, an output module and a feedback module;
the input module is used for inputting an alternating current power supply;
the rectification filtering module is connected with the input module and is used for rectifying and filtering the alternating current power supply output by the input module;
the comparison module is connected with the rectification filter module and is used for comparing the voltage output by the rectification filter module with a high-voltage preset value;
the driving module is connected with the comparison module, the boosting module and the converter module are both connected with the driving module, the converter module is connected with the boosting module, and the driving module is used for driving the boosting module and the converter module to work;
the output module is connected with the converter module, the feedback module is connected with the output module and the converter module, and the feedback module is used for feeding back the voltage acquired by the output module to the converter module.
2. The high voltage power supply with wide input voltage range according to claim 1, wherein the rectifying and smoothing module comprises an EMI filter circuit and a rectifying circuit, the EMI filter circuit is connected with the rectifying circuit, the EMI filter circuit comprises a first capacitor C1, a first inductor L1 and a second capacitor C2, a first terminal of the first capacitor C1 and a first terminal of the first inductor L1 are both connected with the positive electrode of the output terminal of the input module, a second terminal of the first capacitor C1 is connected to ground, a first terminal of the second capacitor C2 is connected with a second terminal of the first inductor L1, and a second terminal of the second capacitor C2 is connected to ground; the rectifying circuit comprises a rectifying bridge B and a third capacitor C3, wherein the first end of the rectifying bridge B is connected with the first end of the second capacitor C2, the second end of the rectifying bridge B is connected with the second end of the second capacitor C2, the first end of the third capacitor C3 is connected with the third end of the rectifying bridge B, and the second end of the third capacitor C3 is connected with the fourth end of the rectifying bridge B and connected to the ground.
3. The wide input voltage range high voltage power supply of claim 1, wherein said comparison module employs a hysteresis comparator to compare the voltage output by said rectifying and filtering module with a high voltage preset value.
4. The wide input voltage range high voltage power supply of claim 1, wherein said drive module uses a relay to drive said boost module and said converter module to operate.
5. The high voltage power supply with wide input voltage range according to claim 1, wherein the boost module comprises a boost input circuit and a boost chip, the boost input circuit comprises an NMOS transistor N and a fourth capacitor C4, the drain of the NMOS transistor N is connected with the output terminal of the driving module, the first end of the fourth capacitor C4 is connected with the source of the NMOS transistor N, and the gate of the NMOS transistor N and the second end of the fourth capacitor C4 are both connected to ground; the input end of the boost chip is connected with the first end of the fourth capacitor C4.
6. The high voltage power supply with wide input voltage range according to claim 5, wherein the boost module further comprises a boost output circuit, the boost output circuit comprises a fifth capacitor C5, a transistor Q, a first diode D1, a sixth capacitor C6, a first resistor R1, a seventh capacitor C7, a second resistor R2 and a second diode D2, a first end of the fifth capacitor C5 is connected to the output terminal of the boost chip, a base of the transistor Q is connected to a second end of the fifth capacitor C5, an emitter of the transistor Q is connected to ground, an anode of the first diode D1 is connected to a collector of the transistor Q, a first end of the sixth capacitor C6 is connected to a cathode of the first diode D1, a second end of the sixth capacitor C6 is connected to ground, a first end of the first resistor R1 is connected to a first end of the sixth capacitor C6, the second terminal of the first resistor R1 is connected to ground, the first terminal of the seventh capacitor C7 is connected to the first terminal of the first resistor R1, the second terminal of the seventh capacitor C7 is connected to ground, the first terminal of the second resistor R2 is connected to the first terminal of the seventh capacitor C7, the anode of the second diode D2 is connected to the second terminal of the second resistor R2, and the cathode of the second diode D2 is connected to ground.
7. The wide input voltage range high voltage power supply of claim 1, wherein said converter module is configured to convert the voltage output by said rectifying-filtering module and the voltage output by said boosting module into a desired voltage, and said converter module employs a full-bridge type transformer.
8. The wide input voltage range high voltage power supply of claim 1, wherein the feedback module comprises an opto-coupler, an adjustable voltage regulator, and a feedback resistance circuit having a plurality of feedback resistances, the opto-coupler being connected to the adjustable voltage regulator, the opto-coupler and the adjustable voltage regulator both being connected to the feedback resistance circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121467691.8U CN215452809U (en) | 2021-06-29 | 2021-06-29 | High-voltage power supply with wide input voltage range |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121467691.8U CN215452809U (en) | 2021-06-29 | 2021-06-29 | High-voltage power supply with wide input voltage range |
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| CN215452809U true CN215452809U (en) | 2022-01-07 |
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| CN202121467691.8U Active CN215452809U (en) | 2021-06-29 | 2021-06-29 | High-voltage power supply with wide input voltage range |
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- 2021-06-29 CN CN202121467691.8U patent/CN215452809U/en active Active
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Address after: No. 470, binwen Road, Binjiang District, Hangzhou, Zhejiang 310000 Patentee after: ZHEJIANG VOCATIONAL College OF COMMERCE Address before: No. 470, binwen Road, Binjiang District, Hangzhou, Zhejiang 310000 Patentee before: Zhejiang Business Vocational and Technical College (Hangzhou business technical school) |
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Effective date of registration: 20220831 Address after: 310000 room 601-8, 6th floor, building 3, No. 500, Qiuyi Road, Binjiang District, Hangzhou, Zhejiang Province Patentee after: Hangzhou shaobang Technology Co.,Ltd. Address before: No. 470, binwen Road, Binjiang District, Hangzhou, Zhejiang 310000 Patentee before: ZHEJIANG VOCATIONAL College OF COMMERCE |