CN108282916A - Power supply high-temperature protection method, circuit and LED illuminator - Google Patents
Power supply high-temperature protection method, circuit and LED illuminator Download PDFInfo
- Publication number
- CN108282916A CN108282916A CN201810073140.XA CN201810073140A CN108282916A CN 108282916 A CN108282916 A CN 108282916A CN 201810073140 A CN201810073140 A CN 201810073140A CN 108282916 A CN108282916 A CN 108282916A
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- Prior art keywords
- temperature
- power supply
- power
- module
- power source
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000005611 electricity Effects 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims description 19
- 239000004744 fabric Substances 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- 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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Control Of Voltage And Current In General (AREA)
- Dc-Dc Converters (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to a kind of power supply high-temperature protection method, circuit and LED illuminators, wherein power supply high-temperature protection method according to power source temperature by adjusting the output power of power supply, to realize power supply continue working at high operating temperatures.Once more than power supply chip setting temperature when, will not power cutoff output, by adjusting the output power of power supply, the temperature for reducing power supply, after temperature restores normal, power supply is automatically regulated to be normal output, power source life can effectively be extended, ensure electricity system long-term stable operation.
Description
Technical field
The present invention relates to power protection fields, shine in particular to a kind of power supply high-temperature protection method, circuit and LED
Body.
Background technology
Existing regular tap power supply, output power is constant, is used within the scope of Normal Environmental Temperature, will not to itself and
Rear class illuminator impacts, but more than normal temperature range or bad radiating condition, can make power supply itself
Calorific value steeply rises, and overheating itself damage or service life is caused to reduce.
Existing temperature detect switch (TDS) power supply, when the temperature is excessively high, direct power cutoff output, with LED brightening or illumination
Occasion is simultaneously not suitable for.
Invention content
The object of the present invention is to provide a kind of power supply high-temperature protection method and circuits, to solve the above problems.
To achieve the goals above, technical solution used in the embodiment of the present invention is as follows：
An embodiment of the present invention provides a kind of power supply high-temperature protection method, the power supply overtemperature prote method passes through according to electricity
Source temperature adjusts the output power of power supply, to realize power supply continue working at high operating temperatures.
It is described to adjust the method packet of the output power of power supply according to power source temperature in preferred embodiments of the present invention
It includes：
Monitor power source temperature；
The power source temperature received is compared with preset temperature；
If the power source temperature received is greater than or equal to preset temperature, controls power supply and float downward output power.
In preferred embodiments of the present invention, the method that the control power supply floats downward output power includes：
Adjust electric power output voltage；
Adjust electric power outputting current；Or
Adjust power supply duty ratio.
It is described also to be wrapped come the method for adjusting the output power of power supply according to power source temperature in preferred embodiments of the present invention
It includes：
If the power source temperature received is greater than or equal to preset temperature, controls radiating module and increase down power.
The embodiment of the present invention additionally provides a kind of power supply high-temperature protection circuit, and the power supply high-temperature protection circuit includes temperature
Monitoring modular, main control module and drive module；
The temperature monitoring module, the main control module and the drive module are electrically connected successively；
The temperature monitoring module is suitable for monitoring power source temperature and is sent to the main control module；
The main control module is suitable for the power source temperature received being compared with preset temperature；
If the drive module is suitable for the power source temperature that receives and is greater than or equal to preset temperature, control power supply float downward it is defeated
Go out power.
In preferred embodiments of the present invention, the power supply high-temperature protection circuit further includes radiating module；
The radiating module is electrically connected with drive module, and the power source temperature suitable for being received when the main control module is big
Heat radiation power is increased by the drive module when in or equal to.
In preferred embodiments of the present invention, the temperature monitoring module includes thermistor, hot cloth idol, two pole of temperature measuring type
Pipe, temperature measuring type triode or temperature switch.
In preferred embodiments of the present invention, the main control module includes normal integrated circuit, digital integrated electronic circuit or list
Piece machine.
In preferred embodiments of the present invention, the main control module is integrated with the drive module on one piece of circuit board.
Compared with the existing technology, the embodiment of the present invention has the advantages that：
An embodiment of the present invention provides a kind of power supply high-temperature protection method, circuit and LED illuminators, wherein power supply is high
Warm guard method according to power source temperature by adjusting the output power of power supply, to realize that power supply continues work at high operating temperatures
Make.When more than the temperature of power supply chip setting, will not power cutoff output reduce by adjusting the output power of power supply
The temperature of power supply, after temperature restores normal, power supply is automatically regulated to be normal output, can effectively extend power source life, ensures
Electricity system long-term stable operation.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 shows a kind of flow chart for power supply high-temperature protection method that the embodiment of the present invention is provided.
Fig. 2 shows a kind of principle schematics for power supply high-temperature protection circuit that the embodiment of the present invention is provided.
Fig. 3 shows a kind of circuit diagram for power supply high-temperature protection circuit that the embodiment of the present invention is provided.
In figure：100- power supply high-temperature protection circuits；110- temperature monitoring modules；120- main control modules；130- drive modules.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
First embodiment
As shown in Figure 1, the present invention provides a kind of power supply high-temperature protection methods.Power supply high-temperature protection method passes through according to electricity
Source temperature adjusts the output power of power supply, to realize power supply continue working at high operating temperatures.Wherein come according to power source temperature
The method for adjusting the output power of power supply includes the following steps：
S110：Monitor power source temperature.
The real time temperature of power supply, wherein temperature-monitoring element are monitored by temperature-monitoring element, can are but are not limited only to,
Thermistor, thermocouple, temperature measuring type diode, temperature measuring type triode and temperature switch.
S120：The power source temperature received is compared with preset temperature.
The step S110 power source temperatures monitored are compared with preset temperature on a control device, preset temperature is electricity
Maximum temperature when source is normal.Wherein, control device can be but be not limited only to, normal integrated circuit, digital integrated electronic circuit with
And microcontroller.
S130：If the power source temperature received is greater than or equal to preset temperature, controls power supply and float downward output power.
When the power source temperature that control device receives be greater than or equal to preset temperature, by the power supply control chip of power supply come
Output power is floated downward, to reduce the temperature of power supply.
Wherein, the method that control power supply floats downward output power can export by adjusting electric power output voltage, adjustment power supply
Electric current；Or the mode of power supply duty ratio is adjusted to realize.
Further include come the method for adjusting the output power of power supply according to power source temperature：If the power source temperature received be more than or
Equal to preset temperature, then controls radiating module and increase down power.When the temperature of power supply is more than preset temperature, dissipated by increasing
Thermal power, quickly to cool down to power supply.
Second embodiment
Referring to Fig. 2, the embodiment of the present invention additionally provides a kind of power supply high-temperature protection circuit 100, power supply high temperature protection electricity
Road 100 includes temperature monitoring module 110, main control module 120 and drive module 130.
Temperature monitoring module 110, main control module 120 and drive module 130 are electrically connected successively, temperature monitoring module
110 are suitable for monitoring power source temperature and are sent to main control module 120, the power source temperature that main control module 120 is suitable for receive with it is pre-
If temperature is compared, if the power source temperature that drive module 130 is suitable for receiving is greater than or equal to preset temperature, power supply is controlled
Float downward output power.Wherein, main control module 120 is integrated in drive module 130 on one piece of circuit board.
Power supply high-temperature protection circuit 100 further includes radiating module；Radiating module is electrically connected with drive module 130, and suitable
Heat radiation power is increased by drive module 130 when the power source temperature received when main control module 120 is greater than or equal to.
In the present embodiment, temperature monitoring module 110 is using thermistor.In other embodiments, temperature monitoring
Module 110 includes thermistor, hot cloth idol, temperature measuring type diode, temperature measuring type triode or temperature switch.
In the present embodiment, main control module 120 is normal integrated circuit.In other embodiments, main control module 120 includes
Simple electronic circuit, normal integrated circuit, digital integrated electronic circuit or microcontroller.
In the present embodiment, drive module 130 is relay and triode, in other embodiments, it can be but not
It is only limitted to, it is triode, relay, one-way or bi-directional silicon-controlled.
Referring to Fig. 3, Fig. 3 shows a kind of circuit for power supply high-temperature protection circuit 100 that the embodiment of the present invention is provided
Schematic diagram.
Operation principle is as follows, and thermistor R4 forms bleeder circuit with resistance R9, is the reverse side of voltage comparator Lm393
Comparison voltage is provided, wherein thermistor R4 is negative tempperature coefficient thermistor.Slide rheostat R3 is voltage comparator Lm393
In-phase end provide reference voltage, when power source temperature be greater than or equal to preset temperature when, comparison voltage be more than reference voltage, voltage
Comparator Lm393 output control signals make triode Q1 be connected, to make relay K be connected, the contact closure of relay K.
The contact of its repeat circuit K and the control chip of power supply are electrically connected, when control chip detects touching for relay K
When point is closed, control power supply floats downward output power.
3rd embodiment
The embodiment of the present invention additionally provides a kind of LED illuminator.LED illuminator passes through above-mentioned power supply high-temperature protection circuit
100 protect power supply.
In conclusion an embodiment of the present invention provides a kind of power supply high-temperature protection method, circuit and LED illuminator,
In, power supply high-temperature protection method according to power source temperature by adjusting the output power of power supply, to realize power supply in the condition of high temperature
Lower continue working.Once more than power supply chip setting temperature when, will not power cutoff output, by adjusting the output work of power supply
Rate reduces the temperature of power supply, and after temperature restores normal, power supply is automatically regulated to be normal output, can effectively extend the power supply longevity
Life ensures electricity system long-term stable operation.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.
Claims (10)
1. a kind of power supply high-temperature protection method, which is characterized in that the power supply overtemperature prote method by according to power source temperature come
The output power for adjusting power supply, to realize power supply continue working at high operating temperatures.
2. power supply high-temperature protection method as described in claim 1, which is characterized in that described to adjust power supply according to power source temperature
The method of output power include：
Monitor power source temperature；
The power source temperature received is compared with preset temperature；
If the power source temperature received is greater than or equal to preset temperature, controls power supply and float downward output power.
3. power supply high-temperature protection method as claimed in claim 2, which is characterized in that
The control power supply method of floating downward output power includes：
Adjust electric power output voltage；
Adjust electric power outputting current；Or
Adjust power supply duty ratio.
4. power supply high-temperature protection method as claimed in claim 2, which is characterized in that
It is described to further include come the method for adjusting the output power of power supply according to power source temperature：
If the power source temperature received is greater than or equal to preset temperature, controls radiating module and increase down power.
5. a kind of power supply high-temperature protection circuit, which is characterized in that the power supply high-temperature protection circuit includes temperature monitoring module, master
Control module and drive module；
The temperature monitoring module, the main control module and the drive module are electrically connected successively；
The temperature monitoring module is suitable for monitoring power source temperature and is sent to the main control module；
The main control module is suitable for the power source temperature received being compared with preset temperature；
If the power source temperature that the drive module is suitable for receiving is greater than or equal to preset temperature, controls power supply and float downward output work
Rate.
6. power supply high-temperature protection circuit as claimed in claim 5, which is characterized in that the power supply high-temperature protection circuit further includes
Radiating module；
The radiating module and drive module are electrically connected, and the power source temperature suitable for being received when the main control module be more than or
Equal to when pass through the drive module increase heat radiation power.
7. power supply high-temperature protection circuit as claimed in claim 5, which is characterized in that
The temperature monitoring module includes thermistor, hot cloth idol, temperature measuring type diode, temperature measuring type triode or temperature switch.
8. power supply high-temperature protection circuit as claimed in claim 5, which is characterized in that
The main control module includes normal integrated circuit, digital integrated electronic circuit or microcontroller.
9. power supply high-temperature protection circuit as claimed in claim 5, which is characterized in that
The main control module is integrated with the drive module on one piece of circuit board.
10. a kind of LED illuminator, which is characterized in that the LED illuminator passes through such as claim 5-9 any one of them electricity
Source high-temperature protection circuit protects power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073140.XA CN108282916A (en) | 2018-01-25 | 2018-01-25 | Power supply high-temperature protection method, circuit and LED illuminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073140.XA CN108282916A (en) | 2018-01-25 | 2018-01-25 | Power supply high-temperature protection method, circuit and LED illuminator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108282916A true CN108282916A (en) | 2018-07-13 |
Family
ID=62805045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810073140.XA Pending CN108282916A (en) | 2018-01-25 | 2018-01-25 | Power supply high-temperature protection method, circuit and LED illuminator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108282916A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873040A (en) * | 2018-08-30 | 2020-03-10 | 安徽美芝制冷设备有限公司 | Protection circuit and system of variable frequency compressor and refrigerator |
| CN114615776A (en) * | 2022-03-09 | 2022-06-10 | 珠海市圣昌电子有限公司 | Power supply overheating protection staged load reduction method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869155A (en) * | 2012-09-06 | 2013-01-09 | 上海晶丰明源半导体有限公司 | LED (light-emitting diode) driving source control circuit and control method thereof |
| CN105050295A (en) * | 2015-08-28 | 2015-11-11 | 深圳市志和兴业电子有限公司 | Over-temperature protection circuit of light-emitting diode (LED) drive power supply |
| CN205566699U (en) * | 2015-12-15 | 2016-09-07 | 广州亿赐照明有限公司 | High -power LED drive power supply of anti thunderbolt |
-
2018
- 2018-01-25 CN CN201810073140.XA patent/CN108282916A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869155A (en) * | 2012-09-06 | 2013-01-09 | 上海晶丰明源半导体有限公司 | LED (light-emitting diode) driving source control circuit and control method thereof |
| CN105050295A (en) * | 2015-08-28 | 2015-11-11 | 深圳市志和兴业电子有限公司 | Over-temperature protection circuit of light-emitting diode (LED) drive power supply |
| CN205566699U (en) * | 2015-12-15 | 2016-09-07 | 广州亿赐照明有限公司 | High -power LED drive power supply of anti thunderbolt |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873040A (en) * | 2018-08-30 | 2020-03-10 | 安徽美芝制冷设备有限公司 | Protection circuit and system of variable frequency compressor and refrigerator |
| CN114615776A (en) * | 2022-03-09 | 2022-06-10 | 珠海市圣昌电子有限公司 | Power supply overheating protection staged load reduction method and system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180713 |