CN206674257U - A kind of LED power and LED lamp for supporting hot plug - Google Patents
A kind of LED power and LED lamp for supporting hot plug Download PDFInfo
- Publication number
- CN206674257U CN206674257U CN201720361148.7U CN201720361148U CN206674257U CN 206674257 U CN206674257 U CN 206674257U CN 201720361148 U CN201720361148 U CN 201720361148U CN 206674257 U CN206674257 U CN 206674257U
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- current
- load
- module
- hot plug
- led
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The utility model provides a kind of LED power and LED lamp for supporting hot plug, it is characterized in that detect circuit including load condition, the load condition detection circuit realiration load and unloaded detection, described load condition detection circuit includes current detection module and current comparing module, the current detection module and load in series, the current detection module is in parallel with current comparing module, and the output end of the current comparing module is connected with the input port of judging unit.Realize the connection status of quick detection load, particularly load one disconnects is switched to low current state by circuit immediately, it ensure that it is low current working condition to be supported on access moment, only normal mode of operation is just switched to after load stabilization access, destruction of the load access moment to LED is avoided, therefore hot plug can be supported using the light fixture of LED power power supply.
Description
Technical field
Technical field of LED illumination is the utility model is related to, more particularly to a kind of LED load guard method and LED light fixtures.
Background technology
LED lamp is answered due to the effect, longer service life and outstanding environmental protection characteristic of its good illumination more
With all starting progressively to instead of traditional incandescent lamp and common bulb in occasion, therefore the popularization of LED lamp is also increasingly wider, with
The raising of the popularity rate of LED lamp, also begins to progressively expose the various problems of LED lamp.The LED non-normal use life-spans are sent out
Raw damage is the problem of one of them is important to be solved.Analysis finds, when the output of LED load and LED power is in connecing
Touch it is bad in the state of, loose contact namely frequently occur LED load power on/off, high current be present in LED Contacts
Impact and make it that junction temperature is too high and cause LED to damage, be a major reason for causing LED lamp to damage.LED power supply category
In low-voltage power supply, therefore directly safety problem is not present in operation, and is also required to plug LED lamp in many application scenarios,
Namely hot plug, and be easiest to be in contact bad and cause LED light fixtures to damage in hot plug process.
Utility model content
For disadvantages described above, the utility model purpose is causing LED lamp fragile in how avoiding hot plug process
The problem of, realize and improve LED lamp service life.
In order to solve problem above, the utility model proposes a kind of LED power for supporting hot plug, it is characterised in that bag
Include load condition detection circuit, the load condition detection circuit realiration load and unloaded detection, the inspection of described load condition
Slowdown monitoring circuit includes current detection module and current comparing module, the current detection module and load in series, the current detecting
Module is in parallel with current comparing module, and the output end of the current comparing module is connected with the input port of judging unit.
The LED power of described support hot plug, it is characterised in that also including current control circuit, the current control electricity
The conversion of normal current and no-load current is realized on road, and the current control circuit includes current limiting module and electric current modulus of conversion
Block, the current limiting module and load in series, the input of the current conversion module and output end respectively with current limit
The both ends of module are connected, and the control terminal of the current conversion module is connected with the output port of judging unit.
The LED power of described support hot plug, it is characterised in that load condition detection circuit output end directly with master
Chip feedback control end connects, and realizes the output current and output voltage of control rear class.
The LED power of described support hot plug, it is characterised in that also including current control circuit, the current control electricity
The conversion of normal current and no-load current is realized on road, and the current control circuit includes current limiting module and electric current modulus of conversion
Block, the current limiting module are connected with the control terminal of judging unit, realize the output current and output voltage of control rear class.
The LED power of described support hot plug, it is characterised in that the current detection module is resistance, current sense
Device, constantan wire, current sense chip, current transformer, diode or triode.
The LED power of described support hot plug, it is characterised in that the current detection module is resistance R1, the electric current
Comparison module is comparator U3, the resistance R1 and load in series, two inputs of the comparator U3 respectively with the electricity
Resistance R1 both ends are connected, and the output end of the comparator U3 is connected with the input port of judging unit.
The LED power of described support hot plug, it is characterised in that current limiting module be resistance R2, the resistance R2 with
Load in series；Current conversion module be power tube D1, the power tube D1 input and output end respectively with resistance R2 two
End is connected, and the control terminal of the power tube D1 is connected with the output port of judging unit.
The LED power of described support hot plug, it is characterised in that current limiting module MOSFET, BJT, relay,
Controllable silicon or gate-controlled switch device；Described judging unit is digital control device, analog controller part.
The LED power of described support hot plug, it is characterised in that described judging unit is MCU controllers, described negative
State detection circuit and load in series are carried, the load condition detection circuit output end is connected with the input port of MCU controllers
Connect, the output port of MCU controllers is connected with the control terminal of current control circuit；The output port of the MCU controllers is extremely
Two kinds of control signals are exported less；The current control circuit comprises at least two kinds of circuit operating patterns, the current control circuit
Mode of operation by the MCU controllers output port export control signal control.
A kind of LED lamp for supporting hot plug, it is characterised in that include the branch described in claim 1 to 9 any one
Hold the LED power of hot plug.
The utility model can realize the connection status of quick detection load, particularly load a disconnection and immediately cut circuit
Low current state is changed to, ensure that it is low current working condition to be supported on access moment, only just switch after load stabilization access
To normal mode of operation, destruction of the load access moment to LED is avoided, therefore can prop up using the light fixture of LED power power supply
Hold hot plug.
Brief description of the drawings
Fig. 1 is the LED power circuit diagram for supporting hot plug.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1 is the LED power circuit diagram for supporting hot plug.AC/DC, decompression constant-current circuit, load condition detection electricity
Road, current control circuit and MCU controllers U1；High-voltage alternating is converted into constant low pressure direct current by AC/DC, is depressured constant-current circuit
Low-voltage direct is converted into voltage needed for LED for step-down conversion circuit, while plays constant pressure and flow effect；Load condition detection electricity
Whether road detection load is correctly accessed, and different status signals is exported according to whether load accesses；Load as LED load.Specifically
For：Load condition detection circuit is made up of sampling resistor R1 and comparator U3, resistance R1 and load in series, two of comparator U3
Both ends of the input respectively with resistance R1 are connected, and comparator U3 output end is connected with the input port AD1 of MCU controllers.
Current control circuit is made up of power tube D1 and resistance R2, resistance R2 and load in series, power tube D1 input and output end
The both ends with resistance R2 are connected respectively, and power tube D1 control terminal is connected with the PWM output ports of MCU controllers.
When LED load accesses output end, resistance R1 both ends can form potential difference；And when LED load does not access, electricity
R1 both ends are hindered without potential difference.The potential difference signal at R1 both ends is converted to unloaded or load signal and passes to MCU by comparator U3
Controller U1 processing；R2 is connected in LED load loop, and D1 is in parallel with R2, and R2 resistance can be according to the most unskilled labourer of LED load
Selection is adjusted as current requirements.
When power output end does not load access, load circuit is open circuit, and resistance R1 2 ends do not have electric current to flow through, than
It is high level compared with device U3 outputs, MCU controllers U1 monitors the input port AD1 input high levels of MCU controllers, controlled immediately
PWM ends output low level shut-off D1, that is, the resistance R2 that connected load circuit, wait connect LED load more next time；When
The moment of LED load access, LED load are connected with resistance R2, and resistance R2 is used as current-limiting resistance in load circuit, will load
Loop works current limit works in desired low current mode of operation, protects LED load in access moment not by high current
Impact damage；After power output end, which accesses, to be loaded, resistance R1 2 ends have electric current to flow through, comparator U3 output low levels, CU
Controller U1 monitors the input port AD1 input low levels of MCU controllers, can increase delay operation 10mS~100mS, protects
PWM ends output high level is controlled to open power tube D1 again after demonstrate,proving the access safe and reliable under low current state of LED load,
LED load current loop forms loop by D1, is bypassed equivalent to resistance R2, the work of LED load total current.
Because the LED drive power realizes the connection status of quick detection load, particularly load a disconnection and immediately will
Circuit is switched to low current state, ensure that it is low current working condition to be supported on access moment, only after load stabilization access
Normal mode of operation is just switched to, avoids destruction of the load access moment to LED, therefore using the lamp of LED power power supply
Tool can support hot plug.
Above disclosed is only a kind of the utility model embodiment, can not limit this right model with this certainly
Enclose, one of ordinary skill in the art will appreciate that realizing all or part of flow of above-described embodiment, and weighed according to the utility model
Profit requires made equivalent variations, still falls within the scope that the utility model is covered.
Claims (10)
1. a kind of LED power for supporting hot plug, it is characterised in that detect circuit, the load condition detection including load condition
Circuit realiration loads compares mould with unloaded detection, described load condition detection circuit including current detection module and electric current
Block, the current detection module and load in series, the current detection module is in parallel with current comparing module, and the electric current compares
The output end of module is connected with the input port of judging unit.
2. the LED power according to claim 1 for supporting hot plug, it is characterised in that also including current control circuit, institute
State the conversion that current control circuit realizes normal current and no-load current, the current control circuit include current limiting module and
Current conversion module, the current limiting module and load in series, input and the output end of the current conversion module are distinguished
It is connected with the both ends of current limiting module, the control terminal of the current conversion module is connected with the output port of judging unit
Connect.
3. the LED power according to claim 1 for supporting hot plug, it is characterised in that load condition detects the output of circuit
End is directly connected with master chip feedback control end, realizes the output current and output voltage of control rear class.
4. the LED power according to claim 1 for supporting hot plug, it is characterised in that also including current control circuit, institute
State the conversion that current control circuit realizes normal current and no-load current, the current control circuit include current limiting module and
Current conversion module, the current limiting module are connected with the control terminal of judging unit, realize control rear class output current and
Output voltage.
5. the LED power according to claim 2 for supporting hot plug, it is characterised in that the current detection module is electricity
Resistance, current sensor, constantan wire, current sense chip, current transformer, diode or triode.
6. the LED power according to claim 2 for supporting hot plug, it is characterised in that the current detection module is resistance
(R1), the current comparing module is comparator (U3), the resistance (R1) and load in series, two of the comparator (U3)
Both ends of the input respectively with the resistance (R1) are connected, the output end of the comparator (U3) and the input port of judging unit
It is connected.
7. the LED power according to claim 4 for supporting hot plug, it is characterised in that current limiting module MOSFET,
BJT, relay, controllable silicon or gate-controlled switch device；Described judging unit is digital control device, analog controller part.
8. the LED power according to claim 5 for supporting hot plug, it is characterised in that current limiting module is resistance
(R2), the resistance (R2) and load in series；Current conversion module is power tube (D1), the input of the power tube (D1) with
Both ends of the output end respectively with resistance (R2) are connected, the control terminal and the output port phase of judging unit of the power tube (D1)
Connection.
9. the LED power of the support hot plug according to claim 1 to 7 any one, it is characterised in that described judgement
Unit is MCU controllers, load condition detection circuit and load in series, the load condition detection circuit output end with
The input port of MCU controllers is connected, and the output port of MCU controllers is connected with the control terminal of current control circuit；Institute
The output port for stating MCU controllers at least exports two kinds of control signals；The current control circuit comprises at least two kinds of circuit works
Operation mode, the control signal that the mode of operation of the current control circuit is exported by the output port of the MCU controllers control.
10. a kind of LED lamp for supporting hot plug, it is characterised in that include the support described in claim 1 to 9 any one
The LED power of hot plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720361148.7U CN206674257U (en) | 2017-04-07 | 2017-04-07 | A kind of LED power and LED lamp for supporting hot plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720361148.7U CN206674257U (en) | 2017-04-07 | 2017-04-07 | A kind of LED power and LED lamp for supporting hot plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206674257U true CN206674257U (en) | 2017-11-24 |
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ID=60367054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720361148.7U Active CN206674257U (en) | 2017-04-07 | 2017-04-07 | A kind of LED power and LED lamp for supporting hot plug |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111065184A (en) * | 2019-12-16 | 2020-04-24 | 毛昭祺 | Hot-pluggable LED driving power supply and control method thereof |
| CN111224437A (en) * | 2018-11-24 | 2020-06-02 | 深圳市三奇科技有限公司 | Battery control panel working method, battery control panel and unmanned aerial vehicle |
-
2017
- 2017-04-07 CN CN201720361148.7U patent/CN206674257U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224437A (en) * | 2018-11-24 | 2020-06-02 | 深圳市三奇科技有限公司 | Battery control panel working method, battery control panel and unmanned aerial vehicle |
| CN111065184A (en) * | 2019-12-16 | 2020-04-24 | 毛昭祺 | Hot-pluggable LED driving power supply and control method thereof |
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