CN218958792U - Direct-current power supply conversion circuit - Google Patents
Direct-current power supply conversion circuit Download PDFInfo
- Publication number
- CN218958792U CN218958792U CN202223075148.0U CN202223075148U CN218958792U CN 218958792 U CN218958792 U CN 218958792U CN 202223075148 U CN202223075148 U CN 202223075148U CN 218958792 U CN218958792 U CN 218958792U
- Authority
- CN
- China
- Prior art keywords
- output module
- resistor
- module
- capacitor
- voltage
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a direct current power supply conversion circuit, which relates to a voltage supply circuit, and comprises: the direct-current power supply module is used for supplying direct current and outputting the direct current to the switch driving module, the boosting output module, the step-down output module and the negative voltage output module; the switch driving module is used for driving and controlling the output voltage lifting amplitude of the boosting output module and the step-down output module; the boost output module is used for boosting and outputting positive voltage; the step-down output module is used for step-down output of positive voltage; a negative voltage output module for outputting a constant negative voltage; the direct current power supply module is connected with the switch driving module, the boosting output module, the step-down output module and the negative voltage output module, and compared with the prior art, the utility model has the beneficial effects that: the utility model outputs adjustable positive voltage through the boost output module and the buck output module, outputs fixed negative voltage through the negative voltage output module, and supplies output voltage according to actual electricity utilization conditions.
Description
Technical Field
The utility model relates to a voltage supply circuit, in particular to a direct current power supply conversion circuit.
Background
The direct current power supply is provided with a positive electrode and a negative electrode, the potential of the positive electrode is high, the potential of the negative electrode is low, and when the two electrodes are communicated with the circuit, a constant potential difference can be maintained between the two ends of the circuit, so that current from the positive electrode to the negative electrode is formed in an external circuit. Such as dry cell batteries, accumulators, dc generators, etc.
The existing direct current power supply lacks a voltage conversion device, so that the output voltage application range is smaller, the requirements of users cannot be fully met, and improvement is needed.
Disclosure of Invention
The utility model aims to provide a direct-current power supply conversion circuit so as to solve the problem of smaller application range of output voltage.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a dc power conversion circuit comprising:
the direct-current power supply module is used for supplying direct current and outputting the direct current to the switch driving module, the boosting output module, the step-down output module and the negative voltage output module;
the switch driving module is used for driving and controlling the output voltage lifting amplitude of the boosting output module and the step-down output module;
the boost output module is used for boosting and outputting positive voltage;
the step-down output module is used for step-down output of positive voltage;
a negative voltage output module for outputting a constant negative voltage;
the direct current power supply module is connected with the switch driving module, the boosting output module, the step-down output module and the negative voltage output module, and the switch driving module is connected with the boosting output module and the step-down output module.
As still further aspects of the utility model: the switch driving module comprises a timer U1, a resistor R2, a potentiometer RP1, a capacitor C2 and a resistor R3, wherein one end of the resistor R1 is connected with the direct-current power supply module, the other end of the resistor R1 is connected with one end of the resistor R2, the No. 4 pin of the timer U1 and the No. 8 pin of the timer U1, the other end of the resistor R2 is connected with the No. 7 pin of the timer U1 and one end of the potentiometer RP1, the other end of the potentiometer RP1 is connected with the No. 2 pin of the timer U1, the No. 6 pin of the timer U1 and one end of the capacitor C1, the other end of the capacitor C1 is grounded, the No. 5 pin of the timer U1 is grounded through the capacitor C2, the No. 1 pin of the timer U1 is connected with one end of the resistor R3, and the other end of the resistor R3 is connected with the step-up output module and the step-down output module.
As still further aspects of the utility model: the boost output module comprises a diode D2, a capacitor C4 and a resistor R5, wherein the positive electrode of the diode D2 is connected with one end of the input side of a transformer W and the D electrode of a MOS tube V1, the G electrode of the MOS tube V1 is connected with a switch driving module, the S electrode of the MOS tube V1 is connected with a buck output module, the other end of the input side of the transformer W is connected with a direct current power supply module, the negative electrode of the diode D2 is connected with one end of the capacitor C4, one end of the resistor R5 and the output voltage VOUT2, the other end of the capacitor C4 is grounded, and the other end of the resistor R5 is grounded.
As still further aspects of the utility model: the step-down output module comprises a resistor R6, a resistor R7 and a capacitor C3, wherein one end of the resistor R6 is connected with one end of the resistor R7, one end of the capacitor C5 and the S pole of the MOS tube V1, the other end of the resistor R6 is grounded, the other end of the capacitor C5 is grounded, the other end of the resistor R7 outputs a voltage VOUT3, the G pole of the MOS tube V1 is connected with the switch driving module, the D pole of the MOS tube V1 is connected with one end of the input side of the transformer W and the step-up output module, and the other end of the input side of the transformer W is connected with the direct current power supply module.
As still further aspects of the utility model: the negative voltage output module comprises a capacitor C3, a resistor R4 and a diode D1, wherein one end of the capacitor C3 is connected with one end of the output side of the transformer W and one end of the resistor R4, the other end of the capacitor C3 is grounded, the other end of the resistor R4 is connected with the output voltage VOUT1 and the positive electrode of the diode D1, and the negative electrode of the diode D1 is grounded.
Compared with the prior art, the utility model has the beneficial effects that: the utility model outputs adjustable positive voltage through the boost output module and the buck output module, outputs fixed negative voltage through the negative voltage output module, and supplies output voltage according to actual electricity utilization conditions.
Drawings
Fig. 1 is a schematic diagram of a dc power conversion circuit.
Fig. 2 is a circuit diagram of a dc power conversion circuit.
Fig. 3 is a voltage-current diagram of a zener diode.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
Referring to fig. 1, a dc power conversion circuit includes:
the direct-current power supply module is used for supplying direct current and outputting the direct current to the switch driving module, the boosting output module, the step-down output module and the negative voltage output module;
the switch driving module is used for driving and controlling the output voltage lifting amplitude of the boosting output module and the step-down output module;
the boost output module is used for boosting and outputting positive voltage;
the step-down output module is used for step-down output of positive voltage;
a negative voltage output module for outputting a constant negative voltage;
the direct current power supply module is connected with the switch driving module, the boosting output module, the step-down output module and the negative voltage output module, and the switch driving module is connected with the boosting output module and the step-down output module.
In particular embodiments: the output voltage of the dc power module may be supplied by a dry battery, a storage battery, a dc generator, or the like.
In this embodiment: referring to fig. 2, the switch driving module includes a timer U1, a resistor R2, a potentiometer RP1, a capacitor C2, and a resistor R3, wherein one end of the resistor R1 is connected to the dc power module, the other end of the resistor R1 is connected to one end of the resistor R2, a pin 4 of the timer U1, and a pin 8 of the timer U1, the other end of the resistor R2 is connected to a pin 7 of the timer U1, one end of the potentiometer RP1, the other end of the potentiometer RP1 is connected to a pin 2 of the timer U1, a pin 6 of the timer U1, and one end of the capacitor C1, the other end of the capacitor C1 is grounded through the capacitor C2, the pin 3 of the resistor U1 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the boost output module and the buck output module.
The timer U1 is a 555 timer, the charging and discharging speed of the capacitor C1 is changed by adjusting the resistance value of the potentiometer RP1, the duty ratio of the square wave output by the No. 3 pin of the timer U1 is further changed, the conduction frequency of the MOS tube V1 is controlled, and the output voltage of the boosting output module and the output voltage of the step-down output module are further controlled.
In this embodiment: referring to fig. 2, the boost output module includes a diode D2, a capacitor C4, and a resistor R5, wherein a positive electrode of the diode D2 is connected to one end of an input side of the transformer W and a D electrode of the MOS transistor V1, a G electrode of the MOS transistor V1 is connected to the switch driving module, a S electrode of the MOS transistor V1 is connected to the buck output module, the other end of the input side of the transformer W is connected to the dc power module, a negative electrode of the diode D2 is connected to one end of the capacitor C4, one end of the resistor R5, the output voltage VOUT2, the other end of the capacitor C4 is grounded, and the other end of the resistor R5 is grounded.
When the MOS tube V1 is turned on, the input side of the transformer W stores electric energy, when the MOS tube V1 is turned off, the current originally flowing to the MOS tube V1 flows to the capacitor C4 instead because the current on the coil (inductor) cannot be suddenly changed, so that the voltage on the capacitor C4 is increased, the boosting is completed, and the voltage VOUT2 is output.
In this embodiment: referring to fig. 2, the buck output module includes a resistor R6, a resistor R7, a capacitor C3, one end of the resistor R6 is connected to one end of the resistor R7, one end of the capacitor C5, an S pole of the MOS transistor V1, the other end of the resistor R6 is grounded, the other end of the capacitor C5 is grounded, the other end of the resistor R7 outputs a voltage VOUT3, the G pole of the MOS transistor V1 is connected to the switch driving module, the D pole of the MOS transistor V1 is connected to one end of the input side of the transformer W, the boost output module, and the other end of the input side of the transformer W is connected to the dc power module.
In unit time, the on time of the MOS tube V1 is 50% (for example), and the ratio of the input voltage to the output voltage of the MOS tube V1 is 2:1, so that the unit on time of the MOS tube V1 is changed by adjusting the duty ratio of the square wave, the voltage reduction amplitude is changed, and the output voltage VOUT3 is outputted.
In this embodiment: referring to fig. 2 and 3, the negative voltage output module includes a capacitor C3, a resistor R4, and a diode D1, wherein one end of the capacitor C3 is connected to one end of the output side of the transformer W and one end of the resistor R4, the other end of the capacitor C3 is grounded, the other end of the resistor R4 is connected to the output voltage VOUT1 and the positive electrode of the diode D1, and the negative electrode of the diode D1 is grounded.
The input side of the transformer W flows to the current from top to bottom, the output side of the transformer W flows to the current from bottom to top, the diode D1 is a zener diode, and the magnitude of the output voltage VOUT1 is the rated voltage of the zener diode D1.
For example, 30V can be used, the positive voltage VOUT2 can be selected to be 20V (the user can control by adjusting the square wave duty ratio), the negative voltage VOUT1 is selected to be-10V (the power is controlled by a voltage stabilizing diode), and the user obtains 30V direct current. The actual user, the user obtains the required voltage by changing the magnitudes of the output voltages VOUT2 and VOUT3 to match VOUT 1.
The working principle of the utility model is as follows: the direct current power supply module supplies direct current and outputs the direct current to the switch driving module, the boosting output module, the step-down output module and the negative voltage output module, the switch driving module drives and controls the output voltage lifting amplitude of the boosting output module and the step-down output module, the boosting output module boosts and outputs positive voltage, the step-down output module steps down and outputs positive voltage, and the negative voltage output module outputs constant negative voltage.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The direct current power supply conversion circuit is characterized in that:
the direct current power supply conversion circuit includes:
the direct-current power supply module is used for supplying direct current and outputting the direct current to the switch driving module, the boosting output module, the step-down output module and the negative voltage output module;
the switch driving module is used for driving and controlling the output voltage lifting amplitude of the boosting output module and the step-down output module;
the boost output module is used for boosting and outputting positive voltage;
the step-down output module is used for step-down output of positive voltage;
a negative voltage output module for outputting a constant negative voltage;
the direct current power supply module is connected with the switch driving module, the boosting output module, the step-down output module and the negative voltage output module, and the switch driving module is connected with the boosting output module and the step-down output module.
2. The direct current power supply conversion circuit according to claim 1, wherein the switch driving module comprises a timer U1, a resistor R2, a potentiometer RP1, a capacitor C2 and a resistor R3, one end of the resistor R1 is connected with the direct current power supply module, the other end of the resistor R1 is connected with one end of the resistor R2, a pin 4 of the timer U1 and a pin 8 of the timer U1, the other end of the resistor R2 is connected with a pin 7 of the timer U1 and one end of the potentiometer RP1, the other end of the potentiometer RP1 is connected with a pin 2 of the timer U1, a pin 6 of the timer U1 and one end of the capacitor C1, the other end of the capacitor C1 is grounded, a pin 5 of the timer U1 is grounded through the capacitor C2, a pin 3 of the timer U1 is connected with one end of the resistor R3, and the other end of the resistor R3 is connected with the step-up output module and the step-down output module.
3. The direct current power conversion circuit according to claim 1, wherein the boost output module comprises a diode D2, a capacitor C4 and a resistor R5, wherein a positive electrode of the diode D2 is connected with one end of an input side of the transformer W and a D electrode of the MOS transistor V1, a G electrode of the MOS transistor V1 is connected with the switch driving module, a S electrode of the MOS transistor V1 is connected with the buck output module, the other end of the input side of the transformer W is connected with the direct current power module, a negative electrode of the diode D2 is connected with one end of the capacitor C4, one end of the resistor R5 and the output voltage VOUT2, the other end of the capacitor C4 is grounded, and the other end of the resistor R5 is grounded.
4. The direct current power conversion circuit according to claim 1, wherein the step-down output module comprises a resistor R6, a resistor R7 and a capacitor C3, one end of the resistor R6 is connected with one end of the resistor R7, one end of the capacitor C5 and the S pole of the MOS transistor V1, the other end of the resistor R6 is grounded, the other end of the capacitor C5 is grounded, the other end of the resistor R7 outputs the voltage VOUT3, the G pole of the MOS transistor V1 is connected with the switch driving module, the D pole of the MOS transistor V1 is connected with one end of the input side of the transformer W, the step-up output module, and the other end of the input side of the transformer W is connected with the direct current power module.
5. The dc power conversion circuit according to claim 3 or 4, wherein the negative voltage output module comprises a capacitor C3, a resistor R4, and a diode D1, one end of the capacitor C3 is connected to one end of the output side of the transformer W, one end of the resistor R4, the other end of the capacitor C3 is grounded, the other end of the resistor R4 is connected to the output voltage VOUT1, the positive electrode of the diode D1, and the negative electrode of the diode D1 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223075148.0U CN218958792U (en) | 2022-11-21 | 2022-11-21 | Direct-current power supply conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223075148.0U CN218958792U (en) | 2022-11-21 | 2022-11-21 | Direct-current power supply conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218958792U true CN218958792U (en) | 2023-05-02 |
Family
ID=86102707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223075148.0U Active CN218958792U (en) | 2022-11-21 | 2022-11-21 | Direct-current power supply conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218958792U (en) |
-
2022
- 2022-11-21 CN CN202223075148.0U patent/CN218958792U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103066666B (en) | A kind of booster type battery charging management system and control method thereof | |
| CN115208305B (en) | Stable photovoltaic power generation intelligent power supply system | |
| Halder | Charge controller of solar photo-voltaic panel fed (SPV) battery | |
| US20170117730A1 (en) | Efficient supercapacitor charging technique by a hysteretic charging scheme | |
| CN115514219A (en) | Three-level DCDC converter with flying capacitor, system and control method | |
| CN112510998B (en) | Solar MPPT booster unit | |
| CN218958792U (en) | Direct-current power supply conversion circuit | |
| TW200903960A (en) | Cascade power converter | |
| CN100499950C (en) | Self-adaptive output white light LED driver | |
| JP2004336974A (en) | Power supply | |
| CN111555416B (en) | Battery charge-discharge control circuit | |
| CN113783463A (en) | Electric field force generating set | |
| CN201122906Y (en) | Synchronous commutation control circuit | |
| JP2003067065A (en) | Battery incorporated type power converting device | |
| CN208675108U (en) | It is a kind of to be depressured the direct-current switch power supply conversion circuit that boosted | |
| CN220022629U (en) | DC-DC boosting power supply | |
| CN210693810U (en) | Motor control device and electric toothbrush | |
| CN217036762U (en) | Intelligent photovoltaic energy storage emergency power supply | |
| CN116418249B (en) | AC/DC bidirectional conversion circuit | |
| CN213425806U (en) | Energy storage circuit and energy storage system | |
| CN219659449U (en) | Pre-charging circuit, charging circuit and charging device | |
| CN204559398U (en) | Wind power generation adjustable fly-back power circuit | |
| CN104022645A (en) | Constant-frequency fixed turning-off time control device of switching converter | |
| CN217741587U (en) | AC voltage lifting and converting device | |
| CN221408463U (en) | Charging circuit and system with shared interface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |