High-precision voltage stabilizing circuit

Abstract

The utility model provides a high-precision voltage stabilizing circuit. The high-precision voltage stabilizing circuit comprises a rectifier module, a boost module and an inverter module, wherein the input end of the rectification module is used for inputting alternating voltage, the output end of the rectification module is connected with the input end of the boosting module, the output end of the boosting module is connected with the input end of the inversion module, and the output end of the inversion module is used for outputting the alternating voltage; the voltage stabilizing circuit further comprises a first MCU unit and a second MCU unit, the first MCU unit and the second MCU unit are each provided with an ADC module, the first MCU unit is connected with the boosting module through an ADC pin and an IO port for outputting PWM, and the second MCU unit is connected with the inversion module through an ADC pin and an IO port for outputting PWM. In other words, the voltage stabilizing circuit is high in voltage stabilizing precision, pure in power output and high in impact resistance.

Description

Technical Field

[0001] The present application belongs to the technical field of voltage stabilizing circuits, and more specifically, relates to a high-precision voltage stabilizing circuit. Background Art

[0002] Common voltage-stabilized power supplies typically use a relay structure. These structures maintain a stable output voltage through a transformer, rectification, filtering, voltage regulation, and feedback. The input voltage passes through a transformer, undergoes rectification and filtering, and then enters the voltage regulator. The voltage regulator typically includes a feedback loop to control the output voltage within a certain range.

[0003] However, common voltage-stabilized power supplies may experience output fluctuations in actual operation, resulting in output voltage fluctuations or ripples. They may also experience poor response to load changes, causing output voltage fluctuations. They may also be affected by noise and interference from other electronic devices or the external environment, resulting in unstable output voltages. Utility Model Content

[0004] The present application provides a high-precision voltage stabilization circuit with high voltage stabilization accuracy.

[0005] The technical solution adopted in this application is a high-precision voltage stabilization circuit, including a rectifier module, a boost module and an inverter module; wherein,

[0006] The input end of the rectifier module is used for inputting AC voltage, the output end of the rectifier module is connected to the input end of the boost module, the output end of the boost module is connected to the input end of the inverter module, and the output end of the inverter module is used for outputting AC voltage; and

[0007] The voltage stabilizing circuit also includes a first MCU unit and a second MCU unit, each of which has an ADC module. The first MCU unit is connected to the boost module through an ADC pin and an IO port that outputs PWM, and the second MCU unit is connected to the inverter module through an ADC pin and an IO port that outputs PWM.

[0008] That is to say, in the voltage stabilization circuit of the present application, a first MCU unit with an ADC adoption module is provided, which is then connected to the boost module via the ADC pin and the IO port for outputting PWM, and a second MCU unit with an ADC adoption module is then connected to the inverter module via the ADC pin and the IO port for outputting PWM. In this way, the first MCU unit can first sample, collect, judge, and correct the front-stage voltage of the boost module to ensure the accuracy of the high-voltage DC voltage output by the boost module, and then the second MCU unit can first sample, collect, judge, and correct the front-stage voltage of the inverter module to ensure the accuracy of the output AC voltage, thereby achieving a high-precision voltage stabilization output. Compared with common voltage stabilization power supplies, this method has high voltage stabilization accuracy and pure power output, and the isolation and correction method of the first MCU unit and the second MCU unit makes the circuit more shock-resistant.

[0009] As a preferred solution of the present invention, it further includes a display screen, which is connected to the AC voltage output end of the inverter module and is used to display data of the AC voltage output.

[0010] As a preferred solution of the present invention, an auxiliary power supply is further included, and an output end of the auxiliary power supply is connected to the display screen for providing power to the display screen.

[0011] As a preferred solution of the present invention, the output end of the auxiliary power supply is also connected to the first MCU unit and the second MCU unit respectively, for providing power to the first MCU unit and the second MCU unit.

[0012] As a preferred solution of the present invention, the input end of the auxiliary power supply is connected to the output end of the rectifier module.

[0013] As a preferred solution of the present invention, the rectifier module, boost module and inverter module each include a filter structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0015] Figure 1 This is a structural block diagram of a high-precision voltage stabilization circuit provided in an embodiment of the present application.

[0016] Reference numerals:

[0017] 100, rectifier module; 200, boost module; 300, inverter module; 400, first MCU unit; 500, second MCU unit; 600, display screen; 700, auxiliary power supply. Specific embodiments

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0019] It should be noted that when a meta-structure is referred to as being "fixed to" or "disposed on" another meta-structure, it may be directly on the other meta-structure or indirectly on the other meta-structure. When a meta-structure is referred to as being "connected to" another meta-structure, it may be directly connected to the other meta-structure or indirectly connected to the other meta-structure.

[0020] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In some application descriptions, "plurality" means two or more, unless otherwise specifically defined.

[0022] See Figure 1 The present application provides a high-precision voltage stabilization circuit, including a rectifier module 100, a boost module 200 and an inverter module 300.

[0023] Among them, the input end of the rectifier module 100 is used for inputting AC voltage, the output end of the rectifier module 100 is connected to the input end of the boost module 200, the output end of the boost module 200 is connected to the input end of the inverter module 300, and the output end of the inverter module 300 is used for outputting AC voltage.

[0024] Specifically, the rectifier module 100 is used to convert the input AC voltage into DC voltage, the boost module 200 is used to convert the low-voltage DC voltage converted by the rectifier module 100 into a high-voltage DC voltage, and the inverter module 300 then converts the high-voltage DC voltage output by the boost module 200 into AC voltage.

[0025] Furthermore, the voltage stabilizing circuit further includes a first MCU unit 400 and a second MCU unit 500. The first MCU unit 400 and the second MCU unit 500 each have an ADC module.

[0026] The first MCU unit 400 is connected to the boost module 200 via an ADC pin and an IO port for outputting PWM, and the second MCU unit 500 is connected to the inverter module 300 via an ADC pin and an IO port for outputting PWM.

[0027] Specifically, the first MCU unit 400 samples the front-stage voltage of the boost module 200 through ADC sampling to collect the front-stage voltage information of the boost module 200, and can determine whether the front-stage voltage is within a preset stable range through the first MUC unit. If the front-stage voltage is out of the range or does not reach the ideal voltage value, the first MCU unit 400 can correct the front-stage voltage by outputting the PWM duty cycle to ensure the accuracy of the high-voltage DC voltage output by the subsequent boost module 200.

[0028] The second MCU unit 500 samples the front-stage voltage of the inverter module 300 through ADC sampling to collect the front-stage voltage information of the boost module 200, and can use the second MUC unit to determine whether the front-stage voltage is within a preset stable range. If the front-stage voltage exceeds the range or does not reach the ideal voltage value, the second MCU unit 500 can correct the front-stage voltage by outputting the PWM duty cycle to ensure the accuracy of the AC voltage output by the subsequent inverter module 300.

[0029] That is, in the voltage stabilization circuit of the present application, a first MCU unit 400 having an ADC adoption module is provided, which is then connected to the boost module 200 via the ADC pin and the IO port for outputting PWM, and a second MCU unit 500 having an ADC adoption module is then connected to the inverter module 300 via the ADC pin and the IO port for outputting PWM. In this way, the first MCU unit 400 can first sample, collect, judge, and correct the front-stage voltage of the boost module 200 to ensure the accuracy of the high-voltage DC voltage output by the boost module 200, and then the second MCU unit 500 can first sample, collect, judge, and correct the front-stage voltage of the inverter module 300 to ensure the accuracy of the output AC voltage, thereby achieving a stable and high-precision output. Compared with common voltage-stabilized power supplies, this method has high voltage stabilization accuracy and pure power output, and the isolation and correction method of the first MCU unit 400 and the second MCU unit 500 make the circuit more shock-resistant.

[0030] Optionally, in some embodiments, the voltage stabilization circuit may further include a display screen 600 , which is connected to the AC voltage output terminal of the inverter module 300 and is configured to display data on the AC voltage output. For example, the display screen 600 may display the voltage, frequency, conversion efficiency, current, power, and accumulated power usage of the AC voltage output of the inverter module 300 .

[0031] Furthermore, the voltage stabilizing circuit may further include an auxiliary power supply 700 , wherein an output end of the auxiliary power supply 700 is connected to the display screen 600 for providing power to the display screen 600 .

[0032] In some embodiments, the output end of the auxiliary power supply 700 is also connected to the first MCU unit 400 and the second MCU unit 500 respectively, so as to provide power to the first MCU unit 400 and the second MCU unit 500.

[0033] In some embodiments, the input end of the auxiliary power supply 700 is connected to the output end of the rectifier module 100, so that the DC voltage output by the rectifier module 100 can directly power the display screen 600, the first MCU unit 400 and the second MCU unit 500 through the auxiliary power supply 700, without the need to set up an additional independent power supply.

[0034] In some embodiments, in order to further improve the anti-shock capability of the voltage stabilization circuit, the rectifier module 100 , the boost module 200 , and the inverter module 300 each include a filtering structure.

[0035] For example, filter capacitors may be connected in parallel to the rectifier module 100 , the boost module 200 , and the inverter module 300 , respectively, to achieve filtering.

[0036] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of some applications should be included in the scope of protection of some applications.

Claims

1. A high-precision voltage stabilizing circuit, characterized in that: It includes a rectifier module, a boost module and an inverter module; among which, The input end of the rectifier module is used for inputting AC voltage, the output end of the rectifier module is connected to the input end of the boost module, the output end of the boost module is connected to the input end of the inverter module, and the output end of the inverter module is used for outputting AC voltage; and The voltage stabilizing circuit also includes a first MCU unit and a second MCU unit, each of which has an ADC module. The first MCU unit is connected to the boost module through an ADC pin and an IO port that outputs PWM, and the second MCU unit is connected to the inverter module through an ADC pin and an IO port that outputs PWM.

2. A high-precision voltage stabilizing circuit according to claim 1, characterized in that: It also includes a display screen, which is connected to the AC voltage output end of the inverter module and is used to display data of the AC voltage output.

3. A high-precision voltage stabilizing circuit as claimed in claim 2, characterized in that: An auxiliary power supply is also included, and an output end of the auxiliary power supply is connected to the display screen for providing power to the display screen.

4. A high-precision voltage stabilizing circuit as claimed in claim 3, characterized in that: The output end of the auxiliary power supply is also connected to the first MCU unit and the second MCU unit respectively, for providing power to the first MCU unit and the second MCU unit.

5. A high-precision voltage stabilizing circuit as claimed in claim 4, characterized in that: The input end of the auxiliary power supply is connected to the output end of the rectifier module.

6. A high-precision voltage stabilizing circuit according to any one of claims 1 to 5, characterized in that: The rectifier module, boost module and inverter module each include a filter structure.

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