CN204425707U - A kind of LED lamp power supply - Google Patents
A kind of LED lamp power supply Download PDFInfo
- Publication number
- CN204425707U CN204425707U CN201420852117.8U CN201420852117U CN204425707U CN 204425707 U CN204425707 U CN 204425707U CN 201420852117 U CN201420852117 U CN 201420852117U CN 204425707 U CN204425707 U CN 204425707U
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- Prior art keywords
- power supply
- circuit
- led lamp
- lamp power
- constant
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- 239000004065 semiconductor Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 210000005069 ears Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004020 luminiscence type 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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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a kind of LED lamp power supply, it includes an AC-DC input port, a cell input terminal mouth, Single port commutation circuit and a constant-current control circuit, wherein: when cell input terminal mouth connects battery, the output voltage of battery exports constant-current control circuit to by the normally-closed contact of relay, and then utilizes battery to LED lamp Power supply; When AC-DC input port is connected to AC-DC power supply, the output voltage of AC-DC power supply loads on coil, make relay generation saltus step, its normally-closed contact disconnects and normally opened contact closes, the output voltage of AC-DC power supply exports constant-current control circuit to by closed normally opened contact, and then utilizes AC-DC power supply to LED lamp Power supply.This LED lamp power utilization relay achieves the automatic selection to feeder ear, using battery and AC-DC power supply alternatively as the feeder ear of LED lamp power supply, effectively prevent because two kinds of power supplys access simultaneously and wastes electric energy.
Description
Technical field
The utility model relates to power supply, particularly relates to a kind of LED lamp power supply.
Background technology
LED power is that power supply supply is converted to specific electric current and voltage with the power supply changeover device of driving LED luminescence, and under normal circumstances, the input of LED drive power comprises high pressure industrial frequency AC, low-voltage direct, high voltage direct current, low-voltage high-frequency interchange etc.For direct-current input-type LED power, it generally adopts the battery of specific voltage or online AC-DC Power supply, when the two is connected to the input of LED power simultaneously, LED power alternatively cannot connect above-mentioned two feeder ears, so two kinds of feeder ears are powered to LED power under parallel connection, but this supply power mode easily causes waste of energy, is unfavorable for Long-Time Service.Therefore, existing LED power lacks a kind of function automatically can selecting feeder ear.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of one of battery and AC-DC power supply can automatically selected as the LED lamp power supply of feeder ear.
For solving the problems of the technologies described above, the utility model adopts following technical scheme.
A kind of LED lamp power supply, it includes: an AC-DC input port, and it is for accessing the output voltage of AC-DC power supply; One cell input terminal mouth, it is for accessing the output voltage of battery; Single port commutation circuit, it includes a relay, coil one end of described relay connects AC-DC input port, the other end ground connection of this coil, described relay comprises one group of normally-closed contact and one group of normally opened contact, the front end of described normally-closed contact connects cell input terminal mouth, and the front end of described normally opened contact connects AC-DC input port, the rear end of described normally-closed contact and the rear end of normally opened contact be interconnected and the two tie point as the output of port commutation circuit; One constant-current control circuit, its input is connected to the output of port commutation circuit, and described constant-current control circuit is used for exporting constant current to LED lamp.
Preferably, the voltage of described AC-DC input port and the access of cell input terminal mouth is 36V direct voltage.
Preferably, also include: a 12V-24V input port, it is for accessing 12V-24V direct voltage; One Boost circuit, its input is connected to 12V-24V input port, and its output is connected to the input of constant-current control circuit, and the 12V-24V dc voltage boost that described Boost circuit is used for being inputted is converted to 36V direct voltage; One PWM drive circuit, its output is connected to the control end of Boost circuit, and described PWM drive circuit is used for exporting PWM drive singal to Boost circuit.
Preferably, described constant-current control circuit includes constant-current driven chip and peripheral circuit thereof.
Preferably, also include an adjusting control circuit, described adjusting control circuit includes single-chip microcomputer, the peripheral circuit of this single-chip microcomputer, button and resistor voltage divider circuit, described button and resistor voltage divider circuit are connected to the I/O mouth of single-chip microcomputer, resistor voltage divider circuit includes multiple fly-wheel diode, the anode of each fly-wheel diode is connected to an I/O mouth of single-chip microcomputer by a divider resistance, the Enable Pin of constant-current driven chip is connected to again after the negative electrode of multiple fly-wheel diode is interconnected, described single-chip microcomputer is according to the triggering times of button and trigger duration and to the divider resistance on-load voltage of predetermined number.
Preferably, described Boost circuit includes metal-oxide-semiconductor, inductance and diode, one end of described inductance is connected to 12V-24V input port, the other end of described inductance is connected to the anode of diode, the negative electrode of described diode is as the output of Boost circuit, the drain electrode of described metal-oxide-semiconductor is connected to the anode of diode, and the source electrode of described metal-oxide-semiconductor connects electronegative potential, the grid of described metal-oxide-semiconductor as Boost circuit control end and be connected to the output of described PWM drive circuit.
Preferably, described PWM drive circuit includes PWM driving chip and peripheral circuit thereof.
In LED lamp power supply disclosed in the utility model, when cell input terminal mouth connects battery, the output voltage of battery exports constant-current control circuit to by the normally-closed contact of relay, and then utilizes battery to LED lamp Power supply; When AC-DC input port is connected to AC-DC power supply, the output voltage of AC-DC power supply loads on coil, make relay generation saltus step and self-locking, its normally-closed contact disconnects and normally opened contact closes, the output voltage of AC-DC power supply exports constant-current control circuit to by closed normally opened contact, and then utilizes AC-DC power supply to LED lamp Power supply.This LED lamp power utilization relay achieves the automatic selection to feeder ear, using battery and AC-DC power supply alternatively as the feeder ear of LED lamp power supply, effectively prevent because two kinds of power supplys access simultaneously and wastes electric energy.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of the utility model LED lamp power supply.
Fig. 2 is the schematic diagram of port commutation circuit and constant-current control circuit.
Fig. 3 is the schematic diagram of 12V-24V input port, Boost circuit and PWM drive circuit.
Fig. 4 is the schematic diagram of adjusting control circuit.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in more detail.
The utility model discloses a kind of LED lamp power supply, shown in composition graphs 1 to Fig. 4, it includes AC-DC input port 1, cell input terminal mouth 2, Single port commutation circuit 3 and a constant-current control circuit 4, wherein:
AC-DC input port 1 is for accessing the output voltage of AC-DC power supply;
Cell input terminal mouth 2 is for accessing the output voltage of battery;
Port commutation circuit 3 includes a relay K 1, coil one end of described relay K 1 connects AC-DC input port 1, the other end ground connection of this coil, described relay K 1 comprises one group of normally-closed contact and one group of normally opened contact, the front end of described normally-closed contact connects cell input terminal mouth 2, the front end of described normally opened contact connects AC-DC input port 1, the rear end of described normally-closed contact and the rear end of normally opened contact be interconnected and the two tie point as the output of port commutation circuit 3;
The input of constant-current control circuit 4 is connected to the output of port commutation circuit 3, and described constant-current control circuit 4 is for exporting constant current to LED lamp 10.
In above-mentioned LED lamp power supply, when cell input terminal mouth 2 connects battery, the output voltage of battery exports constant-current control circuit 4 to by the normally-closed contact of relay K 1, and then utilizes battery to LED lamp Power supply; When AC-DC input port 1 is connected to AC-DC power supply, the output voltage of AC-DC power supply loads on coil, relay K 1 is made saltus step to occur and self-locking, its normally-closed contact disconnects and normally opened contact closes, the output voltage of AC-DC power supply exports constant-current control circuit 4 to by closed normally opened contact, and then utilizes AC-DC power supply to LED lamp Power supply.This LED lamp power utilization relay K 1 achieves the automatic selection to feeder ear, using battery and AC-DC power supply alternatively as the feeder ear of LED lamp power supply, effectively prevent because two kinds of power supplys access LED lamp power supply simultaneously and wastes electric energy.
In the present embodiment, the voltage that described AC-DC input port 1 and cell input terminal mouth 2 access is 36V direct voltage.
As the LED lamp power supply of multi input port, in order to access 12V-24V direct current supply voltage, this LED lamp power supply also includes 12V-24V input port 5, Boost circuit 6 and a PWM drive circuit 7, wherein:
12V-24V input port 5 is for accessing 12V-24V direct voltage;
The input of Boost circuit 6 is connected to 12V-24V input port 5, and its output is connected to the input of constant-current control circuit 4, and described Boost circuit 6 is converted to 36V direct voltage for the 12V-24V dc voltage boost inputted;
The output of PWM drive circuit 7 is connected to the control end of Boost circuit 6, and described PWM drive circuit 7 is for exporting PWM drive singal to Boost circuit 6.
As a kind of optimal way, described constant-current control circuit 4 includes constant-current driven chip U2 and peripheral circuit thereof.
On this basis, for meeting the Dimming operation of user, this LED lamp power supply also includes an adjusting control circuit 8, described adjusting control circuit 8 includes single-chip microcomputer U4, the peripheral circuit of this single-chip microcomputer U4, button S1 and resistor voltage divider circuit 9, described button S1 and resistor voltage divider circuit 9 are connected to the I/O mouth of single-chip microcomputer U4, resistor voltage divider circuit 9 includes multiple fly-wheel diode (D5, D6, D7), the anode of each fly-wheel diode is connected to an I/O mouth of single-chip microcomputer U4 by a divider resistance, the Enable Pin of constant-current driven chip U2 is connected to again after the negative electrode of multiple fly-wheel diode is interconnected, described single-chip microcomputer U4 is according to the triggering times of button S1 and trigger duration and to the divider resistance on-load voltage of predetermined number.The concrete gear setting example of this adjusting control circuit 8 is if: button S1 is by being once one grade, be second gear by secondary, be third gear by three times, namely one grade is 100% brightness, and second gear is the brightness of 50%, third gear closes voltage output LED lamp 10 is extinguished, gear shift is carried out in the circulation of three gears, meanwhile, also comprises long by 3 seconds functions: long by button 3 seconds, if be 100% brightness gear current, then LED lamp 10 is directly extinguished.
As the preferred structure of Boost circuit 6, described Boost circuit 6 includes metal-oxide-semiconductor Q1, inductance L 1 and diode D2, one end of described inductance L 1 is connected to 12V-24V input port 5, the other end of described inductance L 1 is connected to the anode of diode D2, the negative electrode of described diode D2 is as the output of Boost circuit 6, the drain electrode of described metal-oxide-semiconductor Q1 is connected to the anode of diode D2, the source electrode of described metal-oxide-semiconductor Q1 connects electronegative potential, the grid of described metal-oxide-semiconductor Q1 as Boost circuit 6 control end and be connected to the output of described PWM drive circuit 7, described PWM drive circuit 7 includes PWM driving chip U1 and peripheral circuit thereof.
Disclosed in the utility model, LED lamp power utilization relay K 1 achieves the automatic selection to feeder ear, using battery and AC-DC power supply alternatively as the feeder ear of LED lamp power supply, effectively prevent because two kinds of power supplys access simultaneously and wastes electric energy.In addition, adjusting control circuit 8 is utilized can also to adjust the operating state of LED lamp 10 neatly.
The above is the utility model preferred embodiment, is not limited to the utility model, all make in technical scope of the present utility model amendment, equivalent to replace or improvement etc., all should be included in scope that the utility model protects.
Claims (7)
1. a LED lamp power supply, is characterized in that including:
One AC-DC input port, it is for accessing the output voltage of AC-DC power supply;
One cell input terminal mouth, it is for accessing the output voltage of battery;
Single port commutation circuit, it includes a relay, coil one end of described relay connects AC-DC input port, the other end ground connection of this coil, described relay comprises one group of normally-closed contact and one group of normally opened contact, the front end of described normally-closed contact connects cell input terminal mouth, and the front end of described normally opened contact connects AC-DC input port, the rear end of described normally-closed contact and the rear end of normally opened contact be interconnected and the two tie point as the output of port commutation circuit;
One constant-current control circuit, its input is connected to the output of port commutation circuit, and described constant-current control circuit is used for exporting constant current to LED lamp.
2. LED lamp power supply as claimed in claim 1, is characterized in that, the voltage of described AC-DC input port and the access of cell input terminal mouth is 36V direct voltage.
3. LED lamp power supply as claimed in claim 2, is characterized in that, also include:
One 12V-24V input port, it is for accessing 12V-24V direct voltage;
One Boost circuit, its input is connected to 12V-24V input port, and its output is connected to the input of constant-current control circuit, and the 12V-24V dc voltage boost that described Boost circuit is used for being inputted is converted to 36V direct voltage;
One PWM drive circuit, its output is connected to the control end of Boost circuit, and described PWM drive circuit is used for exporting PWM drive singal to Boost circuit.
4. LED lamp power supply as claimed in claim 3, it is characterized in that, described constant-current control circuit includes constant-current driven chip and peripheral circuit thereof.
5. LED lamp power supply as claimed in claim 4, it is characterized in that, also include an adjusting control circuit, described adjusting control circuit includes single-chip microcomputer, the peripheral circuit of this single-chip microcomputer, button and resistor voltage divider circuit, described button and resistor voltage divider circuit are connected to the I/O mouth of single-chip microcomputer, resistor voltage divider circuit includes multiple fly-wheel diode (D5, D6, D7), the anode of each fly-wheel diode is connected to an I/O mouth of single-chip microcomputer by a divider resistance, the Enable Pin of constant-current driven chip is connected to again after the negative electrode of multiple fly-wheel diode is interconnected, described single-chip microcomputer is according to the triggering times of button and trigger duration and to the divider resistance on-load voltage of predetermined number.
6. LED lamp power supply as claimed in claim 5, it is characterized in that, described Boost circuit includes metal-oxide-semiconductor, inductance and diode, one end of described inductance is connected to 12V-24V input port, the other end of described inductance is connected to the anode of diode, the negative electrode of described diode is as the output of Boost circuit, the drain electrode of described metal-oxide-semiconductor is connected to the anode of diode, the source electrode of described metal-oxide-semiconductor connects electronegative potential, the grid of described metal-oxide-semiconductor as Boost circuit control end and be connected to the output of described PWM drive circuit.
7. LED lamp power supply as claimed in claim 6, it is characterized in that, described PWM drive circuit includes PWM driving chip and peripheral circuit thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420852117.8U CN204425707U (en) | 2014-12-29 | 2014-12-29 | A kind of LED lamp power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420852117.8U CN204425707U (en) | 2014-12-29 | 2014-12-29 | A kind of LED lamp power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425707U true CN204425707U (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420852117.8U Expired - Fee Related CN204425707U (en) | 2014-12-29 | 2014-12-29 | A kind of LED lamp power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204425707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105188211A (en) * | 2015-09-02 | 2015-12-23 | 绍兴恒力特微电子有限公司 | Light-emitting diode (LED) circuit compatible with low-voltage and high-voltage input and constant-power output |
-
2014
- 2014-12-29 CN CN201420852117.8U patent/CN204425707U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105188211A (en) * | 2015-09-02 | 2015-12-23 | 绍兴恒力特微电子有限公司 | Light-emitting diode (LED) circuit compatible with low-voltage and high-voltage input and constant-power output |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210106 Address after: 518000 Room 301, building B4, block B, 35 Fuyuan 1st Road, Xinhe community, Fuhai street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Zhaobang Intelligent Technology Co.,Ltd. Address before: 518000 B3 building, 3 industrial zone, new street and neighborhood committee, Fuyong, Shenzhen, Baoan District, Guangdong Patentee before: Shenzhen Dokocom Energy Technology Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 |