CN220401608U - Circuit for converter capable of adaptively adjusting load range according to temperature - Google Patents
Circuit for converter capable of adaptively adjusting load range according to temperature Download PDFInfo
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- CN220401608U CN220401608U CN202321153678.4U CN202321153678U CN220401608U CN 220401608 U CN220401608 U CN 220401608U CN 202321153678 U CN202321153678 U CN 202321153678U CN 220401608 U CN220401608 U CN 220401608U
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- 239000003990 capacitor Substances 0.000 claims description 20
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- 230000005611 electricity Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 3
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- 238000002955 isolation Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- 238000009529 body temperature measurement Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of converter circuits, in particular to a circuit for a converter capable of adaptively adjusting a load range according to temperature. According to the utility model, the conversion unit takes power through the input module connected with the mains supply, converts the mains supply into a power supply required by a load through the conversion module, outputs the converted power supply to the temperature control unit through the output module, and the temperature control unit correspondingly adjusts the voltage output to the load according to the detected working temperature of the load, and adjusts the working voltage range of the load so as to avoid damage of the load caused by long-term high-temperature operation.
Description
Technical Field
The utility model relates to the technical field of converter circuits, in particular to a circuit for a converter, which can adaptively adjust a load range according to temperature.
Background
The DC converter is a DC conversion device for converting a DC basic power supply into other voltage types, converting DC electric energy into voltage or current required by a load, chopping a constant DC voltage into a series of pulse voltages through quick on-off control of power electronic devices, and changing the pulse width of the pulse series through control of the change of a duty ratio so as to realize the regulation of an average value of output voltages.
The converter circuit comprises an input circuit, an active clamping circuit, a transformer and an output circuit, wherein the input circuit comprises at least two stages of voltage equalizing units and at least two stages of primary winding units, the primary winding units are connected with the voltage equalizing units in parallel, and the primary winding units are connected with each other in series; each stage of primary winding unit comprises a main switching tube and a primary winding, the main switching tube and the primary winding are connected in series, synchronous driving signals are applied to the control end of the main switching tube, the primary winding is controlled in phase and is in common with a magnetic core, the main switching tube is driven by an isolation driving transformer, an active clamping circuit is directly driven by a control chip, the isolation driving transformer or a high-voltage driving unit is not needed, the product volume is reduced, soft switching is realized, the product efficiency is improved, but when the transformer circuit is used, the working voltage range of a load cannot be adjusted, the load is caused to operate in a full-load state for a long time, the heating value of the load is large when the load operates in the full-load state, and the load is in a high-temperature state for a long time and is easy to fail.
In order to facilitate the adjustment of the operating voltage range of a load according to the temperature of the load so that the load operates at a suitable temperature, a circuit for a converter is proposed that adaptively adjusts the load range according to the temperature.
Disclosure of Invention
The present utility model is directed to a circuit for an inverter that adaptively adjusts a load range according to temperature, so as to solve the problems set forth in the background art.
In order to achieve the above object, the present utility model provides a circuit for a converter for adaptively adjusting a load range according to a temperature, comprising a conversion unit and a temperature control unit, wherein the conversion unit comprises an input module, a conversion module and an output module, the input module is connected with the conversion module, the conversion module is connected with the output module, and the output module is connected with the temperature control unit;
the input module is used for being connected with the mains supply, the conversion module is used for converting the mains supply into a direct current power supply required by a load, the direct current power supply is output to the temperature control unit through the output module, and the temperature control unit adjusts the voltage value output to the load according to the temperature of the load.
As a further improvement of the present technical solution, the temperature control unit comprises a thermistor RL provided on a load, wherein,
one end of the thermistor RL is connected with the capacitor C2 and the resistor R15 in parallel with the diodes DW and D11, and the other end of the thermistor RL is connected with the diode D12 in parallel with the potentiometer RP3;
the capacitor C2 is connected with the other end of the diode D12, the resistor R13 is connected with the transistor BT in parallel, the resistor R13 is connected with the resistors R11 and R12, the resistor R11 is connected with a load, the resistor R12 is connected with the resistor R14, the other end of the potentiometer RP3 is connected with the other end of the diode DW in parallel, the resistor R15 is connected with the transistor BT and the diode D11 in parallel, and the diode D11 is connected with the load.
As a further improvement of the technical scheme, the temperature control unit further comprises a potentiometer RP2, wherein one end of the potentiometer RP2 is connected with the resistor R13, and the other end of the potentiometer RP2 is connected with the capacitor C2.
As a further improvement of the technical scheme, the input module comprises a transformer T1 and a rectifier bridge BG, wherein a main winding of the transformer T1 is connected with 220V, and a secondary winding of the transformer T1 is connected with the rectifier bridge BG.
As a further improvement of the technical solution, the conversion module comprises a diode D1 and a triode Q1,
one end of the triode Q1 is connected with the diode D1 in parallel connection with an inductor L, the inductor L is connected with the rectifier bridge BG, the diode D1 is connected with the capacitor C1 in parallel connection with a resistor R1, and the resistor R1 is connected with the other end of the capacitor C1 and the other end of the triode Q1 in parallel connection with the rectifier bridge BG.
As a further development of the solution, the output module comprises a comparator a,
the comparator A is connected with the amplifier VT, one end of the amplifier VT is connected with the resistor R2 in parallel connection with the other end of the diode D1, the other end of the amplifier VT is connected with the resistors R3 and R5, the comparator A is connected with the potentiometer RP1 and the diode D2 in parallel connection with the other end of the resistor R2, one end of the potentiometer RP1 is connected with the other end of the resistor R3, the other end of the potentiometer RP1 is connected with the resistor R4, and the resistor R4 is connected with the other end of the resistor R5 and the other end of the diode D2 in parallel connection with the resistor R1.
Compared with the prior art, the utility model has the beneficial effects that:
in the circuit for the converter capable of adaptively adjusting the load range according to the temperature, the conversion unit takes electricity through the input module connected with the mains supply, and after the mains supply is converted into a power supply required by the load through the conversion module, the converted power supply is output to the temperature control unit through the output module, the temperature control unit correspondingly adjusts the voltage output to the load according to the detected working temperature of the load, and the working voltage range of the load is adjusted so as to avoid damage of the load caused by long-term high-temperature operation.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a circuit diagram of a conversion unit according to the present utility model;
fig. 3 is a circuit diagram of a temperature control unit according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1-3, the present embodiment provides a circuit for a converter for adaptively adjusting a load range according to a temperature, which includes a conversion unit and a temperature control unit, wherein the conversion unit includes an input module, a conversion module and an output module, the input module is connected with the conversion module, the conversion module is connected with the output module, and the output module is connected with the temperature control unit;
the input module is used for being connected with the mains supply, the transformation module is used for converting the mains supply into a direct current power supply required by the load, the direct current power supply is output to the temperature control unit through the output module, and the temperature control unit adjusts the voltage value output to the load according to the temperature of the load.
Principle of: the conversion unit takes electricity through the input module connected with the mains supply, converts the mains supply into a power supply required by the load through the conversion module, outputs the converted power supply to the temperature control unit through the output module, correspondingly adjusts the voltage output to the load according to the detected working temperature of the load, and adjusts the working voltage range of the load so as to avoid damage of the load caused by long-term high-temperature operation.
In order to facilitate the corresponding regulation of the voltage output to the load according to the temperature of the load, the temperature control unit comprises a thermistor RL provided on the load, wherein,
one end of the thermistor RL is connected with the capacitor C2, the resistor R15 and the diodes DW and D11 in parallel, and the other end of the thermistor RL is connected with the diode D12 and the potentiometer RP3 in parallel;
the capacitor C2 is connected with the other end of the diode D12, the resistor R13 is connected with the transistor BT in parallel, the resistor R13 is connected with the resistors R11 and R12, the resistor R11 is connected with the load, the resistor R12 is connected with the resistor R14 and the other end of the potentiometer RP3 and connected with the other end of the diode DW in parallel, the resistor R15 is connected with the transistor BT and connected with the diode D11 in parallel, and the diode D11 is connected with the load.
In the circuit, a capacitor C2 is charged by a potentiometer RP3, when the voltage of the capacitor C2 is equal to or greater than the voltage division value of the potentiometer RP3 and a thermistor RL, a diode D12 is cut off, the capacitor C2 is charged by a resistor R13, when the temperature of a load end rises, the resistance of the thermistor R6 is reduced, the voltage division points of the potentiometer RP3 and the thermistor RL are reduced, the trigger angle is increased, the voltage output to the load end is reduced, so that the temperature of the load end is controlled to be reduced, when the temperature of the load end is reduced and is lower than a set value, the resistance of the thermistor RL is increased, the voltage division voltage of the potentiometer RP3 and the thermistor RL is increased, the trigger angle is reduced, and the voltage of the load end is increased, so that the effect of regulating the load temperature by controlling the working voltage range of the load is achieved.
In order to eliminate the temperature measurement error, the temperature control unit further comprises a potentiometer RP2, wherein one end of the potentiometer RP2 is connected with a resistor R13, and the other end of the potentiometer RP2 is connected with a capacitor C2.
The potentiometer RP2 is used for temperature correction, when the resistance value of the potentiometer RP2 is increased, the charging curve of the capacitor C2 is flattened, the triggering angle of the silicon controlled rectifier is increased, and the voltage is reduced, so that the temperature measuring error of the temperature control unit to a load can be eliminated.
In order to take electricity from the commercial power, the input module comprises a transformer T1 and a rectifier bridge BG, a main winding of the transformer T1 is connected with 220V, and an auxiliary winding of the transformer T1 is connected with the rectifier bridge BG.
After the mains supply is converted by the transformer T1, the rectifier bridge BG is used for chopping and intercepting current, so that alternating current to direct current is realized, and electricity is taken from the mains supply.
To facilitate the conversion of power to power required by the load, the conversion module includes a diode D1 and a transistor Q1,
one end of the triode Q1 is connected with the diode D1 in parallel connection with the inductor L, the inductor L is connected with the rectifier bridge BG, the diode D1 is connected with the capacitor C1 in parallel connection with the resistor R1, and the resistor R1 is connected with the other end of the capacitor C1 and the other end of the triode Q1 in parallel connection with the rectifier bridge BG.
The circuit is a typical Boost converter circuit and is composed of an inductor L, a triode Q1, a diode D1 and a capacitor C1, and has the advantages of less radio frequency interference and lower noise.
For outputting a stable power supply, the output module comprises a comparator a,
the comparator A is connected with the amplifier VT, one end of the amplifier VT is connected with the other end of the diode D1 in parallel, the other end of the amplifier VT is connected with the resistors R3 and R5 in parallel and the resistor R11 in parallel, the comparator A is connected with the potentiometer RP1 and the diode D2 in parallel and the resistor R2 in parallel, one end of the potentiometer RP1 is connected with the other end of the resistor R3, the other end of the potentiometer RP1 is connected with the resistor R4, and the resistor R4 is connected with the other end of the resistor R5, the other end of the diode D2 in parallel and the resistor R1 and the diode D11 in parallel.
In the circuit, when the input voltage increases, the output voltage increases, the feedback voltage also increases, and compared with the reference voltage, the difference voltage is amplified by the comparison amplifying circuit, and the inter-voltage of the amplifier VT is increased, so that the maintenance voltage is basically constant, and a stable power supply is output.
According to the circuit for the change device capable of adaptively adjusting the load range according to the temperature, when the circuit is specifically used, the change unit takes electricity through the input module connected with the mains supply, and after the mains supply is converted into a power supply required by a load through the change module, the converted power supply is output to the temperature control unit through the output module, the temperature control unit supplies power for the load to enable the load to work, when the temperature of the load end rises, the resistance value of the thermistor R6 is reduced, the voltage division points of the potentiometer RP3 and the thermistor RL are reduced, the triggering angle is increased, the voltage output to the load end is reduced, so that the temperature of the load end is controlled to be reduced, when the temperature of the load end is reduced and is lower than a set value, the resistance value of the thermistor RL is increased, the voltage division electricity of the potentiometer RP3 and the thermistor RL is increased, the triggering angle is reduced, and the voltage of the load end is increased, so that the effect of adjusting the load temperature through controlling the working voltage range of the load is achieved.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The circuit for the converter capable of adaptively adjusting the load range according to the temperature is characterized in that: the temperature control device comprises a conversion unit and a temperature control unit, wherein the conversion unit comprises an input module, a conversion module and an output module, the input module is connected with the conversion module, the conversion module is connected with the output module, and the output module is connected with the temperature control unit;
the input module is used for being connected with the mains supply, the conversion module is used for converting the mains supply into a direct current power supply required by a load, the direct current power supply is output to the temperature control unit through the output module, and the temperature control unit adjusts the voltage value output to the load according to the temperature of the load.
2. The circuit for a converter according to claim 1, wherein the load range is adaptively adjusted according to temperature, wherein: the temperature control unit comprises a thermistor RL arranged on a load, wherein,
one end of the thermistor RL is connected with the capacitor C2 and the resistor R15 in parallel with the diodes DW and D11, and the other end of the thermistor RL is connected with the diode D12 in parallel with the potentiometer RP3;
the capacitor C2 is connected with the other end of the diode D12, the resistor R13 is connected with the transistor BT in parallel, the resistor R13 is connected with the resistors R11 and R12, the resistor R11 is connected with a load, the resistor R12 is connected with the resistor R14, the other end of the potentiometer RP3 is connected with the other end of the diode DW in parallel, the resistor R15 is connected with the transistor BT and the diode D11 in parallel, and the diode D11 is connected with the load.
3. The circuit for a converter according to claim 2, wherein the load range is adaptively adjusted according to temperature, wherein: the temperature control unit further comprises a potentiometer RP2, one end of the potentiometer RP2 is connected with the resistor R13, and the other end of the potentiometer RP2 is connected with the capacitor C2.
4. The circuit for a converter according to claim 1, wherein the load range is adaptively adjusted according to temperature, wherein: the input module comprises a transformer T1 and a rectifier bridge BG, wherein a main winding of the transformer T1 is connected with 220V, and a secondary winding of the transformer T1 is connected with the rectifier bridge BG.
5. The circuit for a converter according to claim 4, wherein the load range is adaptively adjusted according to temperature, wherein: the conversion module comprises a diode D1 and a triode Q1;
one end of the triode Q1 is connected with the diode D1 in parallel connection with an inductor L, the inductor L is connected with the rectifier bridge BG, the diode D1 is connected with the capacitor C1 in parallel connection with a resistor R1, and the resistor R1 is connected with the other end of the capacitor C1 and the other end of the triode Q1 in parallel connection with the rectifier bridge BG.
6. The circuit for a converter according to claim 5, wherein the load range is adaptively adjusted according to temperature, wherein: the output module comprises a comparator A;
the comparator A is connected with the amplifier VT, one end of the amplifier VT is connected with the resistor R2 in parallel connection with the other end of the diode D1, the other end of the amplifier VT is connected with the resistors R3 and R5, the comparator A is connected with the potentiometer RP1 and the diode D2 in parallel connection with the other end of the resistor R2, one end of the potentiometer RP1 is connected with the other end of the resistor R3, the other end of the potentiometer RP1 is connected with the resistor R4, and the resistor R4 is connected with the other end of the resistor R5 and the other end of the diode D2 in parallel connection with the resistor R1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321153678.4U CN220401608U (en) | 2023-05-15 | 2023-05-15 | Circuit for converter capable of adaptively adjusting load range according to temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321153678.4U CN220401608U (en) | 2023-05-15 | 2023-05-15 | Circuit for converter capable of adaptively adjusting load range according to temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220401608U true CN220401608U (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321153678.4U Active CN220401608U (en) | 2023-05-15 | 2023-05-15 | Circuit for converter capable of adaptively adjusting load range according to temperature |
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| Country | Link |
|---|---|
| CN (1) | CN220401608U (en) |
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2023
- 2023-05-15 CN CN202321153678.4U patent/CN220401608U/en active Active
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