CN103956923A - High-performance switching-mode power supply device and control method thereof - Google Patents
High-performance switching-mode power supply device and control method thereof Download PDFInfo
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Abstract
The invention discloses a high-performance switching-mode power supply device and a control method thereof. The high-performance switching-mode power supply device comprises a shell and a switching-mode power supply circuit arranged inside the shell. The switching-mode power supply circuit comprises an alternating current access end, a control switch, a main power module, an auxiliary power module and a temperature control module. The temperature control module comprises a temperature control circuit, a polarity diverter switch, a thermoelectric piece and a temperature sensor. The thermoelectric piece is installed on the shell. The output end of the temperature sensor is connected with the first input end of the temperature control circuit. The first output end of the temperature control circuit is connected with the input end of the control switch, and the second output end of the temperature control circuit is connected with the first input end of the polarity diverter switch. The output end of the polarity diverter switch is connected with the input end of the thermoelectric piece. The output end of the auxiliary power module is respectively connected with the temperature control circuit and the input end of the polarity diverter switch. According to the high-performance switching-mode power supply device and the control method of the high-performance switching-mode power supply device, temperature can be automatically regulated, stability is good, reliability is high, and the high-performance switching-mode power supply device can be widely applied in the industry of switching-mode power supplies.
Description
Technical field
The present invention relates to field of switch power, particularly relate to a kind of high performance switching power unit and control method thereof.
Background technology
The heat dissipating method that Switching Power Supply mainly adopts is at present natural heat dissipation, by the mode of fin or fan cooling, dispels the heat, and these two kinds of radiating mode radiating effects are limited, and when ambient temperature is high, radiating effect can be given a discount greatly.In addition, while using Switching Power Supply, can adopt air conditioner refrigerating, the cold air that utilizes air conditioner to produce blows to Switching Power Supply, and then takes away the heat energy of Switching Power Supply, but the mode of this employing air conditioner refrigerating, energy consumption is large, and because air conditioner volume is larger, is difficult for mobile, can not realize Switching Power Supply is carried out to local cooling, cooling-down effect is not good.And the operating temperature range of Switching Power Supply is between-25 ℃ ~ 75 ℃ at present, when exceeding this temperature range, the power supply of Switching Power Supply just there will be labile state.The equipment more severe to some operational environment, the portable communications command system in national defence electric equipment product for example, need to often carry out outdoor work, northerly certain areas particularly, the temperature in winter can arrive below-35 ℃, and summer is under being exposed to the sun of the sun, temperature can reach more than 75 ℃, current Switching Power Supply heat radiation cannot meet the demand of this harsh operational environment, causes Switching Power Supply normally working, and affects the stability of equipment.
Summary of the invention
In order to solve above-mentioned technical problem, the object of this invention is to provide a kind of high performance switching power unit, another object of the present invention is to provide its control method of a kind of high performance switching power unit.
The technical solution adopted for the present invention to solve the technical problems is:
A high performance switching power unit, comprises shell and switching power circuit is in the enclosure set, described switching power circuit comprises interchange incoming end, control switch, main power source module, accessory power supply module and temperature control modules;
The input of described interchange incoming end is connected with AC power, the first output of described interchange incoming end is connected with the input of accessory power supply module, the second output of described interchange incoming end is connected with the first input end of control switch, the output of described control switch is connected with the first input end of main power source module, and the first output of described accessory power supply module is connected with the second input of main power source module;
Described temperature control modules comprises temperature-control circuit, reversing switch, thermoelectricity sheet and temperature sensor, described thermoelectricity sheet is arranged on shell, the output of described temperature sensor is connected with the first input end of temperature-control circuit, the first output of described temperature-control circuit is connected with the second input of control switch, the second output of described temperature-control circuit is connected with the first input end of reversing switch, the output of described reversing switch is connected with the input of thermoelectricity sheet, the second output of described accessory power supply module is connected with the second input of temperature-control circuit, the 3rd output of described accessory power supply module is connected with the second input of reversing switch.
Further, described accessory power supply module comprises AC transformer, rectification circuit and voltage stabilizing circuit, the first output of described interchange incoming end is connected with the input of voltage stabilizing circuit by AC transformer and rectification circuit successively, the first output of described voltage stabilizing circuit is connected with the second input of main power source module, the second output of described voltage stabilizing circuit is connected with the second input of temperature-control circuit, and the 3rd output of described voltage stabilizing circuit is connected with the second input of reversing switch.
Further, described main power source module comprises ac filter circuit, bridge rectifier, PFC booster circuit and DC-DC change-over circuit, the output of described control switch is connected with the first input end of PFC booster circuit by ac filter circuit and bridge rectifier successively, the output of described PFC booster circuit is connected with the input of DC-DC change-over circuit, and the first output of described voltage stabilizing circuit is connected with the second input of PFC booster circuit.
Further, described reversing switch adopts dpdt relay or power switch pipe.
Further, described control switch adopts controllable silicon or relay.
Further, described voltage stabilizing circuit adopts LDO chip.
Further, described rectification circuit adopts full-wave rectifying circuit or half-wave rectifying circuit.
The technical solution adopted for the present invention to solve the technical problems is:
A control method for high performance switching power unit, comprising:
The real time temperature of the shell of S1, the real-time sense switch supply unit of employing temperature sensor, and send to temperature-control circuit;
S2, temperature-control circuit receive this real time temperature and judge that this real time temperature is whether in normal temperature interval, if, connect control switch and send control signal and control reversing switch in normally off, and return execution step S1, otherwise this real time temperature is greater than maximum temperature threshold value, performs step S3 if judge, if otherwise judge that this real time temperature is less than minimum temperature threshold, performs step S4;
S3, send the operating state that control signal is controlled reversing switch, thereby the DC power supply of switching voltage stabilizing circuit output is connected to the polarity of thermoelectricity sheet, make the positive pole of DC power supply be connected to the positive pole of thermoelectricity sheet and the negative pole of DC power supply is connected to after the negative pole of thermoelectricity sheet, return to execution step S1;
S4, send the operating state that control signal is controlled reversing switch, thereby the DC power supply of switching voltage stabilizing circuit output is connected to the polarity of thermoelectricity sheet, make the negative pole of DC power supply be connected to the positive pole of thermoelectricity sheet and the positive pole of DC power supply is connected to after the negative pole of thermoelectricity sheet, return to execution step S1.
The invention has the beneficial effects as follows: a kind of high performance switching power unit of the present invention, by adopting the real time temperature of temperature sensor Real-time Collection switching power unit, temperature-control circuit judges and controls according to judged result the operating state of reversing switch to this real time temperature, thereby controlling the thermoelectricity sheet being fixed on shell heats or freezes, thereby can to the temperature of switching power unit, adjust in real time, adapt to different operational environments.This switching power unit is simple in structure, and can automatically carry out temperature adjusting according to the temperature of operational environment, can season oneself to cold operational environment or extremely hot operational environment, and good stability and reliability are high.
Another beneficial effect of the present invention is: the control method of a kind of high performance switching power unit of the present invention, by adopting after the real time temperature of temperature sensor Real-time Collection switching power unit, by temperature-control circuit, this real time temperature is judged and controls according to judged result the operating state of reversing switch, thereby controlling the thermoelectricity sheet being fixed on shell heats or freezes, thereby can to the temperature of switching power unit, adjust in real time, adapt to different operational environments.This control method controllable switch supply unit carries out temperature adjusting automatically according to the temperature of operational environment, thereby makes switching power unit can season oneself to cold operational environment or extremely hot operational environment, and the stability and the reliability that have improved switching power unit are high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the structured flowchart of a kind of high performance switching power unit of the present invention;
Fig. 2 is the structured flowchart of a specific embodiment of a kind of high performance switching power unit of the present invention.
Embodiment
For the ease of following description, the following explanation of nouns of given first:
PFC:Power Factor Correction, power factor correction;
DC-DC change-over circuit: DC-to-DC change-over circuit, refers in DC circuit, the electric energy of a magnitude of voltage be become the device of the electric energy of another magnitude of voltage.
With reference to Fig. 1, the invention provides a kind of high performance switching power unit, comprise shell and switching power circuit is in the enclosure set, described switching power circuit comprises interchange incoming end, control switch, main power source module, accessory power supply module and temperature control modules;
The input of described interchange incoming end is connected with AC power, the first output of described interchange incoming end is connected with the input of accessory power supply module, the second output of described interchange incoming end is connected with the first input end of control switch, the output of described control switch is connected with the first input end of main power source module, and the first output of described accessory power supply module is connected with the second input of main power source module;
Described temperature control modules comprises temperature-control circuit, reversing switch, thermoelectricity sheet and temperature sensor, described thermoelectricity sheet is arranged on shell, the output of described temperature sensor is connected with the first input end of temperature-control circuit, the first output of described temperature-control circuit is connected with the second input of control switch, the second output of described temperature-control circuit is connected with the first input end of reversing switch, the output of described reversing switch is connected with the input of thermoelectricity sheet, the second output of described accessory power supply module is connected with the second input of temperature-control circuit, the 3rd output of described accessory power supply module is connected with the second input of reversing switch.
Be further used as preferred embodiment, with reference to Fig. 2, described accessory power supply module comprises AC transformer, rectification circuit and voltage stabilizing circuit, the first output of described interchange incoming end is connected with the input of voltage stabilizing circuit by AC transformer and rectification circuit successively, the first output of described voltage stabilizing circuit is connected with the second input of main power source module, the second output of described voltage stabilizing circuit is connected with the second input of temperature-control circuit, and the 3rd output of described voltage stabilizing circuit is connected with the second input of reversing switch.
Be further used as preferred embodiment, described main power source module comprises ac filter circuit, bridge rectifier, PFC booster circuit and DC-DC change-over circuit, the output of described control switch is connected with the first input end of PFC booster circuit by ac filter circuit and bridge rectifier successively, the output of described PFC booster circuit is connected with the input of DC-DC change-over circuit, and the first output of described voltage stabilizing circuit is connected with the second input of PFC booster circuit.
Be further used as preferred embodiment, described reversing switch adopts dpdt relay or power switch pipe.
Be further used as preferred embodiment, described control switch adopts controllable silicon or relay.
Be further used as preferred embodiment, described voltage stabilizing circuit adopts LDO chip.
Be further used as preferred embodiment, described rectification circuit adopts full-wave rectifying circuit or half-wave rectifying circuit.
The present invention also provides a kind of control method of high performance switching power unit, comprising:
The real time temperature of the shell of S1, the real-time sense switch supply unit of employing temperature sensor, and send to temperature-control circuit;
S2, temperature-control circuit receive this real time temperature and judge that this real time temperature is whether in normal temperature interval, if, connect control switch and send control signal and control reversing switch in normally off, and return execution step S1, otherwise this real time temperature is greater than maximum temperature threshold value, performs step S3 if judge, if otherwise judge that this real time temperature is less than minimum temperature threshold, performs step S4;
S3, send the operating state that control signal is controlled reversing switch, thereby the DC power supply of switching voltage stabilizing circuit output is connected to the polarity of thermoelectricity sheet, make the positive pole of DC power supply be connected to the positive pole of thermoelectricity sheet and the negative pole of DC power supply is connected to after the negative pole of thermoelectricity sheet, return to execution step S1;
S4, send the operating state that control signal is controlled reversing switch, thereby the DC power supply of switching voltage stabilizing circuit output is connected to the polarity of thermoelectricity sheet, make the negative pole of DC power supply be connected to the positive pole of thermoelectricity sheet and the positive pole of DC power supply is connected to after the negative pole of thermoelectricity sheet, return to execution step S1.
Below in conjunction with embodiment, the present invention will be further described.
With reference to Fig. 2, a kind of high performance switching power unit, comprises shell and switching power circuit is in the enclosure set, switching power circuit comprises interchange incoming end, control switch, main power source module, accessory power supply module and temperature control modules;
The input that exchanges incoming end is connected with AC power, the first output that exchanges incoming end is connected with the input of accessory power supply module, the second output that exchanges incoming end is connected with the first input end of control switch, the output of control switch is connected with the first input end of main power source module, and the first output of accessory power supply module is connected with the second input of main power source module;
Temperature control modules comprises temperature-control circuit, reversing switch, thermoelectricity sheet and temperature sensor, thermoelectricity sheet is arranged on shell, the output of temperature sensor is connected with the first input end of temperature-control circuit, the first output of temperature-control circuit is connected with the second input of control switch, the second output of temperature-control circuit is connected with the first input end of reversing switch, the output of reversing switch is connected with the input of thermoelectricity sheet, the second output of accessory power supply module is connected with the second input of temperature-control circuit, the 3rd output of accessory power supply module is connected with the second input of reversing switch.Temperature sensor is arranged in the shell of switching power unit, therefore detect in real time the real time temperature that temperature data obtaining can be considered switching power unit, temperature-control circuit judges this real time temperature, thereby control the thermoelectricity sheet being fixed on shell, heat or freeze, reaching the object of the temperature of adjusting switching power unit.
Accessory power supply module comprises AC transformer, rectification circuit and voltage stabilizing circuit, the first output that exchanges incoming end is connected with the input of voltage stabilizing circuit by AC transformer and rectification circuit successively, the first output of voltage stabilizing circuit is connected with the second input of main power source module, the second output of voltage stabilizing circuit is connected with the second input of temperature-control circuit, and the 3rd output of voltage stabilizing circuit is connected with the second input of reversing switch.In the present embodiment, accessory power supply module is converted to the AC power of 220V the AC power of 18V by AC transformer, the DC power supply that is 16.2V by rectification circuit rectification again, then carries out voltage stabilizing by voltage stabilizing circuit, obtains the DC power supply that magnitude of voltage is 12V.
Main power source module comprises ac filter circuit, bridge rectifier, PFC booster circuit and DC-DC change-over circuit, the output of control switch is connected with the first input end of PFC booster circuit by ac filter circuit and bridge rectifier successively, the output of PFC booster circuit is connected with the input of DC-DC change-over circuit, and the first output of voltage stabilizing circuit is connected with the second input of PFC booster circuit.The output of DC-DC change-over circuit is the DC output end of this switching power unit, and the DC power supply of the voltage stabilizing circuit output of accessory power supply module is used to temperature-control circuit, thermoelectricity sheet and PFC booster circuit that direct voltage is provided.
In the present embodiment, reversing switch adopts dpdt relay or power switch pipe, and control switch adopts controllable silicon or relay, and rectification circuit adopts full-wave rectifying circuit or half-wave rectifying circuit, and voltage stabilizing circuit adopts LDO chip.LDO refers to low dropout regulator, means low pressure difference linear voltage regulator, and the LDO chip that the present embodiment adopts preferably adopts the chip that other model of military project level is LM317.In addition, temperature sensor can adopt thermistor or temperature sensing integrated chip, and temperature-control circuit can adopt comparator or adopt any MCU chip with AD translation function etc., and it is the MCU chip of STC12C5202AD that the present embodiment preferably adopts model.
The shell of switching power unit adopts highly heat-conductive material, is generally metal shell, and thermoelectricity sheet is fixedly installed on shell, thereby can be realized the refrigeration of switching power unit or be heated by this shell.The control method of this switching power unit, comprising:
The real time temperature of the shell of S1, the real-time sense switch supply unit of employing temperature sensor, and send to temperature-control circuit;
S2, temperature-control circuit receive this real time temperature and judge that this real time temperature is whether in normal temperature interval, if, connect control switch and send control signal and control reversing switch in normally off, and return execution step S1, otherwise this real time temperature is greater than maximum temperature threshold value, performs step S3 if judge, if otherwise judge that this real time temperature is less than minimum temperature threshold, performs step S4; Judgement switching power unit, when normal temperature is interval, is just connected control switch, to main power source module power supply, like this can be so that switching power unit be operated in normal temperature range, and stable and reliably;
S3, send the operating state that control signal is controlled reversing switch, thereby the DC power supply of switching voltage stabilizing circuit output is connected to the polarity of thermoelectricity sheet, make the positive pole of DC power supply be connected to the positive pole of thermoelectricity sheet and the negative pole of DC power supply is connected to after the negative pole of thermoelectricity sheet, return to execution step S1;
S4, send the operating state that control signal is controlled reversing switch, thereby the DC power supply of switching voltage stabilizing circuit output is connected to the polarity of thermoelectricity sheet, make the negative pole of DC power supply be connected to the positive pole of thermoelectricity sheet and the positive pole of DC power supply is connected to after the negative pole of thermoelectricity sheet, return to execution step S1.
Normal temperature interval refers to the temperature range between minimum temperature threshold and maximum temperature threshold value, is the temperature range of the normal work of switching power unit, exceeds this temperature range, and switching power unit is too high or too low for temperature, cannot normally work.Therefore, need to according to temperature sensor Real-time Collection to temperature data control the work of thermoelectricity sheet, make thermoelectricity sheet refrigeration or heat, thereby changing the temperature of switching power unit.And thermoelectricity sheet, when freezing, heating, does not have any noise, reliability is high, can guarantee stablizing, working normally of this switching power unit, and adopt thermoelectricity sheet to carry out temperature adjusting, simple in structure.
The operation principle of thermoelectricity sheet is: when the positive and negative polarities of DC power supply are received the both positive and negative polarity of thermoelectricity sheet, different connections, thermoelectricity sheet has different functions, if DC power anode connects the positive pole of thermoelectricity sheet, the negative pole of DC power supply connects the negative pole of thermoelectricity sheet, thermoelectricity sector-meeting refrigeration; DC power anode connects the negative pole of thermoelectricity sheet, and DC power cathode connects the positive pole of thermoelectricity sheet, and thermoelectricity sector-meeting heats.Because the DC power supply that the switching power unit of the present embodiment is exported by voltage stabilizing circuit is the input that is connected to thermoelectricity sheet by reversing switch, it is the both positive and negative polarity of thermoelectricity sheet, therefore the operating state that can control reversing switch is controlled the polarity that is linked into the positive pole of thermoelectricity sheet and the DC power supply of negative pole, thereby controls the operating state of thermoelectricity sheet.And temperature-control circuit detects switching power unit when normal temperature is interval, controls reversing switch in normally off, thereby cuts off the power supply of thermoelectricity sheet, stops refrigeration or heats.Therefore, the switching power unit of the present embodiment can be realized the automatic adjusting to Switching Power Supply temperature.Because the assemblies such as the AC transformer of switching power unit, rectification circuit do not have temperature limiting, adopt thermoelectricity sheet, can so that switching power unit in ambient temperature, exceed-25 ℃ ~ 75 ℃ this automatically carry out temperature adjusting when interval, thereby stable, work reliably.
More than that better enforcement of the present invention is illustrated, but the invention is not limited to embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (8)
1. a high performance switching power unit, is characterized in that, comprises shell and switching power circuit is in the enclosure set, and described switching power circuit comprises interchange incoming end, control switch, main power source module, accessory power supply module and temperature control modules;
The input of described interchange incoming end is connected with AC power, the first output of described interchange incoming end is connected with the input of accessory power supply module, the second output of described interchange incoming end is connected with the first input end of control switch, the output of described control switch is connected with the first input end of main power source module, and the first output of described accessory power supply module is connected with the second input of main power source module;
Described temperature control modules comprises temperature-control circuit, reversing switch, thermoelectricity sheet and temperature sensor, described thermoelectricity sheet is arranged on shell, the output of described temperature sensor is connected with the first input end of temperature-control circuit, the first output of described temperature-control circuit is connected with the second input of control switch, the second output of described temperature-control circuit is connected with the first input end of reversing switch, the output of described reversing switch is connected with the input of thermoelectricity sheet, the second output of described accessory power supply module is connected with the second input of temperature-control circuit, the 3rd output of described accessory power supply module is connected with the second input of reversing switch.
2. a kind of high performance switching power unit according to claim 1, it is characterized in that, described accessory power supply module comprises AC transformer, rectification circuit and voltage stabilizing circuit, the first output of described interchange incoming end is connected with the input of voltage stabilizing circuit by AC transformer and rectification circuit successively, the first output of described voltage stabilizing circuit is connected with the second input of main power source module, the second output of described voltage stabilizing circuit is connected with the second input of temperature-control circuit, the 3rd output of described voltage stabilizing circuit is connected with the second input of reversing switch.
3. a kind of high performance switching power unit according to claim 2, it is characterized in that, described main power source module comprises ac filter circuit, bridge rectifier, PFC booster circuit and DC-DC change-over circuit, the output of described control switch is connected with the first input end of PFC booster circuit by ac filter circuit and bridge rectifier successively, the output of described PFC booster circuit is connected with the input of DC-DC change-over circuit, and the first output of described voltage stabilizing circuit is connected with the second input of PFC booster circuit.
4. a kind of high performance switching power unit according to claim 1, is characterized in that, described reversing switch adopts dpdt relay or power switch pipe.
5. a kind of high performance switching power unit according to claim 1, is characterized in that, described control switch adopts controllable silicon or relay.
6. a kind of high performance switching power unit according to claim 2, is characterized in that, described voltage stabilizing circuit adopts LDO chip.
7. a kind of high performance switching power unit according to claim 2, is characterized in that, described rectification circuit adopts full-wave rectifying circuit or half-wave rectifying circuit.
8. the control method of a kind of high performance switching power unit as claimed in claim 1, is characterized in that, comprising:
The real time temperature of the shell of S1, the real-time sense switch supply unit of employing temperature sensor, and send to temperature-control circuit;
S2, temperature-control circuit receive this real time temperature and judge that this real time temperature is whether in normal temperature interval, if, connect control switch and send control signal and control reversing switch in normally off, and return execution step S1, otherwise this real time temperature is greater than maximum temperature threshold value, performs step S3 if judge, if otherwise judge that this real time temperature is less than minimum temperature threshold, performs step S4;
S3, send the operating state that control signal is controlled reversing switch, thereby the DC power supply of switching voltage stabilizing circuit output is connected to the polarity of thermoelectricity sheet, make the positive pole of DC power supply be connected to the positive pole of thermoelectricity sheet and the negative pole of DC power supply is connected to after the negative pole of thermoelectricity sheet, return to execution step S1;
S4, send the operating state that control signal is controlled reversing switch, thereby the DC power supply of switching voltage stabilizing circuit output is connected to the polarity of thermoelectricity sheet, make the negative pole of DC power supply be connected to the positive pole of thermoelectricity sheet and the positive pole of DC power supply is connected to after the negative pole of thermoelectricity sheet, return to execution step S1.
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| CN201410179134.4A CN103956923A (en) | 2014-04-30 | 2014-04-30 | High-performance switching-mode power supply device and control method thereof |
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| CN201410179134.4A CN103956923A (en) | 2014-04-30 | 2014-04-30 | High-performance switching-mode power supply device and control method thereof |
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| CN106123245A (en) * | 2016-08-11 | 2016-11-16 | 合肥通用电源设备有限公司 | A kind of monitoring system for air conditioning unit power supply changeover device |
| CN106288172A (en) * | 2016-08-11 | 2017-01-04 | 合肥通用电源设备有限公司 | A kind of protection system driving power supply for air-conditioning |
| CN106873462A (en) * | 2017-03-16 | 2017-06-20 | 青岛海尔空调电子有限公司 | The method of the electrical equipment control chip, circuit and multiplexed port treatment of multiplexed port |
| CN113825355A (en) * | 2020-12-09 | 2021-12-21 | 哈尔滨理工大学 | Control device of switching power supply |
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