CN203775489U - Electronic control device for LED module - Google Patents
Electronic control device for LED module Download PDFInfo
- Publication number
- CN203775489U CN203775489U CN201420144979.5U CN201420144979U CN203775489U CN 203775489 U CN203775489 U CN 203775489U CN 201420144979 U CN201420144979 U CN 201420144979U CN 203775489 U CN203775489 U CN 203775489U
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- Prior art keywords
- circuit
- pfc
- wave filtering
- led module
- current rectifying
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- 238000001914 filtration Methods 0.000 claims description 35
- 238000009434 installation Methods 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000005286 illumination Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
Classifications
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- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
An electronic control device for an LED module comprises a switch power unit which is provided with a thermal protecting circuit. When the temperature on the circuit reaches a first preset temperature value, the thermal protecting circuit triggers the output end of the switch power unit for stopping operation. The output end of the switching power unit is serially connected with a power reducing protecting unit. The power reducing protecting unit comprises a thermistor which is configured for detecting temperature on the circuit. Furthermore when the temperature on the circuit is higher than a second preset temperature value, the thermistor reduces the output current of the switch power unit to 30%-40% until the temperature detected by the thermistor on the circuit is lower than a second preset temperature value which is lower than the first preset temperature value. The electronic control device for the LED module according to the utility model can settle overheat damage or electronic control device failure for the LED module caused by overheat of electronic elements, and can provide stable constant voltage/current illuminating power for lamp of an LED light source.
Description
Technical field
The utility model relates to a kind of LED module electronic-controlled installation.
Background technology
In actual application, LED module electronic-controlled installation, claims again Switching Power Supply, is for adopting the module of LED light source that the control device of constant voltage and current is provided.LED module can use with electronic-controlled installation the electronic component material that various caloric values are higher, as isolating transformer, and field effect transistor, electrochemical capacitor etc., and these electronic components are all to there being the maximum operation (service) temperature that can ensure its material that can normally work.Simultaneously, for adapting to electronics miniaturization, LED module reaches various requirement of shelter and convenient trend of installing while use with electronic-controlled installation, circuit module or chip need to be placed in and try one's best in little space (electronic component be generally all welded on tellite add various protection), when LED module is during with the normal work of electronic-controlled installation or operation irregularity, may because its space of living in is too small, electronic component cannot dispel the heat in time, easily cause electronic component material internal temperature to raise and produce the maximum temperature while normally use higher than this electronic component material, make electronic component cisco unity malfunction, LED module is caused to irreversible cross pyrolytic damage or electronic component inefficacy with electronic-controlled installation.
For this reason; generally configure thermal protection circuit (as 110 degree shutdown protective circuits) both at home and abroad in electronic-controlled installation at LED module; in the time that the working temperature of electronic component reaches a certain preset temperature value (if common value is 110 DEG C); this overheating protection circuit action; and trigger LED module electronic-controlled installation and stop the output of voltage or electric current, adopt the light fixture of LED light source to extinguish simultaneously.But, when thermel protection device action, adopt the light fixture of LED light source extinguish and do not reach the object of illumination, and be prone to stroboscopic phenomenon in this process.
Utility model content
For the deficiencies in the prior art, the utility model proposes a kind of LED module electronic-controlled installation, can solve overheated pyrolytic damage excessively or the LED module electronic-controlled installation causing of electronic component and lose efficacy, can provide stable constant voltage/constant current mains lighting supply for the light fixture that adopts LED light source again.
In order to achieve the above object, the technical scheme that the utility model adopts is as follows:
A kind of LED module electronic-controlled installation, comprise that one is used to the switching power supply that adopts the light fixture of LED light source that driving power is provided, this switching power supply comprises a thermal protection circuit, in the time that the temperature on circuit reaches the first preset temperature value, the output that this thermal protection circuit triggers this switching power supply quits work; The output of described switching power supply is also connected in series with one and falls power protected location, this falls power protected location and comprises a thermistor, this thermistor is configured to the temperature on detection circuit, and when the temperature on circuit is during higher than the second preset temperature value, this thermistor impels the output current of this switching power supply to be reduced to 30%-40%, until thermistor detects temperature on circuit lower than this second preset temperature value, now, this falls power protected location and impels the output current of switching power supply to return to normal condition; And this second preset temperature value is lower than the first preset temperature value.
Preferably, described switching power supply also comprises the first current rectifying and wave filtering circuit, pfc circuit, voltage conversion circuit, the second current rectifying and wave filtering circuit, PWM-PFC combined controller, constant-current constant-voltage circuit and PFC control circuit; Wherein, the first current rectifying and wave filtering circuit, pfc circuit, voltage conversion circuit and the second current rectifying and wave filtering circuit are electrically connected successively, the input of the first current rectifying and wave filtering circuit is connected to AC power, and the output of the second current rectifying and wave filtering circuit is connected to the input that falls power protected location; Described PFC control circuit is electrically connected between pfc circuit and PWM-PFC combined controller, for improve the power factor of whole circuit by pfc circuit; Described constant-current constant-voltage circuit is electrically connected between the second current rectifying and wave filtering circuit and PWM-PFC combined controller; Described voltage conversion circuit is electrically connected to PWM-PFC combined controller.
Preferably, described the second current rectifying and wave filtering circuit comprises an electrochemical capacitor and a thermistor, one end of this electrochemical capacitor is connected to the positive output end of this second current rectifying and wave filtering circuit, and the other end of this electrochemical capacitor is connected in series the negative output terminal that is connected to this second current rectifying and wave filtering circuit after this thermistor.
Preferably, LED module also comprises an overload protecting circuit with electronic-controlled installation, and this overload protecting circuit is electrically connected between voltage conversion circuit and PWM-PFC combined controller.
Preferably, LED module also comprises an overvoltage crowbar with electronic-controlled installation, and this overvoltage crowbar is electrically connected between the second current rectifying and wave filtering circuit and PWM-PFC combined controller.
Compared with prior art, the utility model is connected in series with one at the output of switching power supply and falls power protected location, in the time that it detects temperature on circuit higher than the second preset temperature value (as 85 DEG C), this falls power protected location and impels the output current of switching power supply to be reduced to 30%-40%, in the time that the temperature on circuit returns to lower than the second preset temperature value, this falls power protected location and impels the output current of switching power supply to return to normal condition, and the second preset temperature value is lower than the first preset temperature value corresponding to heat protection action, thereby make LED module electronic-controlled installation all the time below temperature (as 110 DEG C) corresponding to heat protection action, can solve overheated pyrolytic damage excessively or the LED module electronic-controlled installation causing of electronic component lost efficacy, can provide stable constant voltage/constant current mains lighting supply for the light fixture that adopts LED light source again.And further by setting up a thermistor being connected in series with electrochemical capacitor in the second current rectifying and wave filtering circuit to eliminate stroboscopic phenomenon.
Brief description of the drawings
Fig. 1 is the structural representation of the preferred embodiment of the utility model LED module electronic-controlled installation.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further, understands the utility model technological thought required for protection so that clearer.
In the specific descriptions of following preferred embodiment, with reference to the appended accompanying drawing that forms the utility model part.Appended accompanying drawing shows by way of example can realize specific embodiment of the present utility model.The embodiment of example is not intended to limit according to all embodiment of the present utility model.Be appreciated that not departing under the prerequisite of scope of the present utility model, can utilize other embodiment, also can carry out the amendment of structural or logicality.Therefore, following specific descriptions are also nonrestrictive, and scope of the present utility model is limited by appended claim.
Refer to Fig. 1, the utility model relates to a kind of LED module electronic-controlled installation, and its preferred embodiments comprises switching power supply 200 and falls power protected location 300.
Switching power supply 200 is used to and adopts the light fixture 400 of LED light source that driving power is provided, and it comprises the first current rectifying and wave filtering circuit 210, pfc circuit 220, voltage conversion circuit 230, the second current rectifying and wave filtering circuit 240, PWM-PFC combined controller 250, constant-current constant-voltage circuit 260, PFC control circuit 221, overload protecting circuit 271, overvoltage crowbar 272 and thermal protection circuit 273.
Wherein, the first current rectifying and wave filtering circuit 210, pfc circuit 220, voltage conversion circuit 230 and the second current rectifying and wave filtering circuit 240 are electrically connected successively, the output that the input of the first current rectifying and wave filtering circuit 210 is connected to AC power 100, the second current rectifying and wave filtering circuits 240 is connected to the input that falls power protected location 300; PFC control circuit 221 is electrically connected between pfc circuit 220 and PWM-PFC combined controller 250, for improve the power factor of whole circuit by pfc circuit 220; The input of constant-current constant-voltage circuit 260 is electrically connected to the output of the second current rectifying and wave filtering circuit 240, the output of this constant-current constant-voltage circuit 260 is electrically connected to the input of PWM-PFC combined controller, makes this switching power supply 200 for adopting the light fixture 400 of LED light source that constant current constant voltage service is provided.Voltage conversion circuit 230 is electrically connected to PWM-PFC combined controller 250, and control cycle based on PWM-PFC combined controller 250 ground control switch power supply, to realize the adjusting to voltage conversion circuit 230 output voltages.
Meanwhile, overload protecting circuit 271, overvoltage crowbar 272 and thermal protection circuit 273 are the protective circuit device of this LED module electronic-controlled installation configuration; Wherein, overload protecting circuit 271 is electrically connected between voltage conversion circuit 230 and PWM-PFC combined controller 250; Overvoltage crowbar 272 is electrically connected between the second current rectifying and wave filtering circuit 240 and PWM-PFC combined controller 250; Thermal protection circuit 273 is electrically connected to PWM-PFC combined controller 250; be used for providing overtemperature protection; in the time that the temperature on circuit reaches the first preset temperature value (as 110 DEG C); this thermal protection circuit 273 moves; and the output that triggers this switching power supply 200 quits work, stop output voltage/electric current.
In some other embodiment, protective circuit device also can be set up other protective circuits, as surge protection circuit, lightning protection circuit, undervoltage turnoff circuit and adjusting control circuit etc.
Falling power protected location 300 is connected between switching power supply 200 and light fixture 400; it is configured to the temperature on detection circuit; and when the temperature on circuit is during higher than the second preset temperature value; this falls power protected location and impels the output current of this switching power supply 200 to be reduced to 30%-40%; now; the heating that circuit because operating current reduces electronic component also reduces; detect returning to lower than this second preset temperature value (as 85 DEG C) on circuit until this falls power protected location 300, and this second preset temperature value is lower than the first preset temperature value.In the time that the temperature on circuit returns to lower than the second preset temperature value (as 85 DEG C), this falls power protected location 300 and impels switching power supply 200 to return to normal condition to the electric current that adopts the light fixture 400 of LED light source to export.Preferably, the selection range of this second preset temperature value is 85 DEG C-105 DEG C.
In the present embodiment, fall power protected location 300 and comprise a thermistor, this thermistor is connected in series in the output of switching power supply 200.In the time that thermistor reaches the second preset temperature value (as 85 DEG C), the resistance value of thermistor increases, impel the output current of this switching power supply 200 to be reduced to 30%-40%, by the time the temperature on circuit is reduced to below the second preset temperature value, the resistance value of thermistor returns to normal value, thereby guarantees that switching power supply 200 returns to normal condition to the electric current that adopts the light fixture 400 of LED light source to export.In some other embodiment, also further by setting up a thermistor being connected in series with electrochemical capacitor in the second current rectifying and wave filtering circuit to eliminate stroboscopic phenomenon, particularly, this second current rectifying and wave filtering circuit comprises an electrochemical capacitor and a thermistor, one end of this electrochemical capacitor is connected to the positive output end of this second current rectifying and wave filtering circuit, and the other end of this electrochemical capacitor is connected in series the negative output terminal that is connected to this second current rectifying and wave filtering circuit after this thermistor.
The utility model is connected in series with one at the output of switching power supply and falls power protected location, in the time that it detects temperature on circuit higher than the second preset temperature value (as 85 DEG C), this falls power protected location and impels switching power supply to the current reduction that adopts the light fixture 400 of LED light source to export to 30%-40%, in the time that the temperature on circuit returns to lower than the second preset temperature value, this falls power protected location and impels switching power supply to return to normal condition to the electric current that adopts the light fixture 400 of LED light source to export, and the second preset temperature value is lower than the first preset temperature value corresponding to heat protection action, thereby make LED module electronic-controlled installation all the time below temperature (as 110 DEG C) corresponding to heat protection action, can solve overheated pyrolytic damage excessively or the LED module electronic-controlled installation causing of electronic component lost efficacy, can provide stable constant voltage/constant current mains lighting supply for the light fixture that adopts LED light source again.By this LED module with the falling power protected location and can realize and adopt the light fixture of LED light source to extinguish never of electronic-controlled installation, thereby reach the object of illumination.
For a person skilled in the art, can be according to technical scheme described above and design, make other various corresponding changes and distortion, and these all changes and distortion all should belong to the protection range of the utility model claim within.
Claims (5)
1. a LED module electronic-controlled installation, comprise that one is used to the switching power supply that adopts the light fixture of LED light source that driving power is provided, this switching power supply comprises a thermal protection circuit, in the time that the temperature on circuit reaches the first preset temperature value, the output that this thermal protection circuit triggers this switching power supply quits work, it is characterized in that: the output of described switching power supply is also connected in series with one and falls power protected location, this falls power protected location and comprises a thermistor, this thermistor is configured to the temperature on detection circuit, and when the temperature on circuit is during higher than the second preset temperature value, this thermistor impels the output current of this switching power supply to be reduced to 30%-40%, until thermistor detects temperature on circuit lower than this second preset temperature value, now, this falls power protected location and impels the output current of switching power supply to return to normal condition, and this second preset temperature value is lower than the first preset temperature value.
2. LED module electronic-controlled installation as claimed in claim 1, is characterized in that: described switching power supply also comprises the first current rectifying and wave filtering circuit, pfc circuit, voltage conversion circuit, the second current rectifying and wave filtering circuit, PWM-PFC combined controller, constant-current constant-voltage circuit and PFC control circuit; Wherein, the first current rectifying and wave filtering circuit, pfc circuit, voltage conversion circuit and the second current rectifying and wave filtering circuit are electrically connected successively, the input of the first current rectifying and wave filtering circuit is connected to AC power, and the output of the second current rectifying and wave filtering circuit is connected to the input that falls power protected location; Described PFC control circuit is electrically connected between pfc circuit and PWM-PFC combined controller, for improve the power factor of whole circuit by pfc circuit; Described constant-current constant-voltage circuit is electrically connected between the second current rectifying and wave filtering circuit and PWM-PFC combined controller; Described voltage conversion circuit is electrically connected to PWM-PFC combined controller.
3. LED module electronic-controlled installation as claimed in claim 2, it is characterized in that: described the second current rectifying and wave filtering circuit comprises an electrochemical capacitor and a thermistor, one end of this electrochemical capacitor is connected to the positive output end of this second current rectifying and wave filtering circuit, and the other end of this electrochemical capacitor is connected in series the negative output terminal that is connected to this second current rectifying and wave filtering circuit after this thermistor.
4. LED module electronic-controlled installation as claimed in claim 2, is characterized in that: LED module electronic-controlled installation also comprises an overload protecting circuit, and this overload protecting circuit is electrically connected between voltage conversion circuit and PWM-PFC combined controller.
5. LED module electronic-controlled installation as claimed in claim 2; it is characterized in that: LED module electronic-controlled installation also comprises an overvoltage crowbar, this overvoltage crowbar is electrically connected between the second current rectifying and wave filtering circuit and PWM-PFC combined controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420144979.5U CN203775489U (en) | 2014-03-27 | 2014-03-27 | Electronic control device for LED module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420144979.5U CN203775489U (en) | 2014-03-27 | 2014-03-27 | Electronic control device for LED module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203775489U true CN203775489U (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420144979.5U Expired - Fee Related CN203775489U (en) | 2014-03-27 | 2014-03-27 | Electronic control device for LED module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203775489U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942855A (en) * | 2017-11-23 | 2018-04-20 | 深圳市稻兴实业有限公司 | The guard method of laser during a kind of laser projection device operation |
| CN111376751A (en) * | 2018-12-29 | 2020-07-07 | 长城汽车股份有限公司 | Vehicle charging management method and system |
| CN111901928A (en) * | 2020-01-03 | 2020-11-06 | 杭州市中策职业学校 | Subway LED lamp driving power supply capable of correcting power factor and power adjusting method |
| CN112512163A (en) * | 2020-12-08 | 2021-03-16 | 四川力士达智慧照明科技有限公司 | Output overvoltage protection control circuit and drive circuit |
| CN112586088A (en) * | 2020-04-21 | 2021-03-30 | 深圳市大疆创新科技有限公司 | Drive system and movable platform |
-
2014
- 2014-03-27 CN CN201420144979.5U patent/CN203775489U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942855A (en) * | 2017-11-23 | 2018-04-20 | 深圳市稻兴实业有限公司 | The guard method of laser during a kind of laser projection device operation |
| CN111376751A (en) * | 2018-12-29 | 2020-07-07 | 长城汽车股份有限公司 | Vehicle charging management method and system |
| CN111901928A (en) * | 2020-01-03 | 2020-11-06 | 杭州市中策职业学校 | Subway LED lamp driving power supply capable of correcting power factor and power adjusting method |
| CN111901928B (en) * | 2020-01-03 | 2022-06-10 | 杭州市中策职业学校 | Subway LED lamp driving power supply capable of correcting power factor and power adjusting method |
| CN112586088A (en) * | 2020-04-21 | 2021-03-30 | 深圳市大疆创新科技有限公司 | Drive system and movable platform |
| CN112512163A (en) * | 2020-12-08 | 2021-03-16 | 四川力士达智慧照明科技有限公司 | Output overvoltage protection control circuit and drive circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20160327 |