CN104684189B - A kind of LED drive circuit and flameproof luminaire - Google Patents
A kind of LED drive circuit and flameproof luminaire Download PDFInfo
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- CN104684189B CN104684189B CN201310642606.0A CN201310642606A CN104684189B CN 104684189 B CN104684189 B CN 104684189B CN 201310642606 A CN201310642606 A CN 201310642606A CN 104684189 B CN104684189 B CN 104684189B
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Abstract
The invention belongs to lighting technical field, in particular to a kind of LED drive circuit and flameproof luminaire.LED drive circuit provided by the present invention includes drive module, mining battery protector, battery and current limliting module.The LED drive circuit is powered using accumulators store electric energy and for entire LED drive circuit, and is protected using mining battery protector to battery, and battery is avoided over-voltage, under-voltage, overcurrent or short circuit phenomenon occur；In addition, utilizing multiple exported current limitations of diode pair battery in current limliting module；Meanwhile drive module being made only to export the electric current for being lower than the one third of rated operational current of LED module.The above measure all greatly strengthens the safety of LED drive circuit, meets the requirement of intrinsicallysafecircuit.Since entire LED drive circuit has very high safety, allow flameproof luminaire using light and handy shell, to enhance the portability of flameproof luminaire.
Description
Technical field
The invention belongs to lighting technical field, in particular to a kind of LED drive circuit and flameproof luminaire.
Background technique
Currently used flameproof luminaire, generally using very thick metallic walls plus the thick Transparent Parts system for reaching several centimetres
At lamp casing.Its reason with mine in there are many fuel gas, the driving circuit of ordinary lamp and lantern inevitably will appear failure,
Cause it is on fire from explosion, to light the fuel gas outside lamps and lanterns.Therefore, in order to make up lamps and lanterns driving circuit safety not
Foot driving circuit is isolated with extraneous fuel gas using thick and heavy shell, so that even if the electronic component inside lamps and lanterns is quick-fried
It fries on fire, the fuel gas outside lamp housing will not be lighted, to achieve the effect that flame proof.It can be risen using such flame proof mode
To good explosion-proof effect, but several kilograms easily of thick and heavy shell, cause lamps and lanterns very heavy, especially for wear-type or hand
Formula mine lamp is mentioned, is used very inconvenient.
Therefore, existing flameproof luminaire has that driving circuit safety is low.
Summary of the invention
The purpose of the present invention is to provide a kind of LED drive circuits, it is intended to solve existing mine anti-explosion mining flame-proofing lamp
Tool has that driving circuit safety is low.
A kind of LED drive circuit, including the drive module for connecting LED module and the LED module being driven to work；
The LED drive circuit further includes mining battery protector, battery and current limliting module；
The input terminal of the anode and the mining battery protector of the battery connects to form the LED drive circuit altogether
The ground terminal of positive charging end, the cathode of the battery and the mining battery protector connects to form the LED drive circuit altogether
Negative charging end and be connected to ground；
The output end of the mining battery protector connects the input terminal of the current limliting module, the output of the current limliting module
The power end of end and the drive module connects the positive output end to form the LED drive circuit altogether, and the drive module, which has, drives
Moved end, the driving end of the drive module are the negative output terminal of the LED drive circuit；
The electric current of the drive module output is less than the one third of the rated operational current of the LED module, the limit
Flow module includes the diode that multiple head and the tail are sequentially connected in series.
Another object of the present invention, which also resides in, provides a kind of flameproof luminaire, including LED module, further includes above-mentioned
LED drive circuit.
LED drive circuit provided by the present invention includes drive module, mining battery protector, battery and current limliting
Module.The LED drive circuit is powered using accumulators store electric energy and for entire LED drive circuit, and is protected using mining battery
Shield device protects battery, and battery is avoided over-voltage, under-voltage, overcurrent or short circuit phenomenon occur；In addition, utilizing current limliting module
In multiple exported current limitations of diode pair battery；Meanwhile drive module being made only to export the specified work lower than LED module
Make the electric current of the one third of electric current.The above measure all greatly strengthens the safety of LED drive circuit, meets essential safety electricity
The requirement on road.Since entire LED drive circuit has very high safety, allow flameproof luminaire using light and handy shell
Body, to enhance the portability of flameproof luminaire.
Detailed description of the invention
Fig. 1 is the structure chart of LED drive circuit provided by first embodiment of the invention 1；
Fig. 2 is the exemplary circuit structure chart of LED drive circuit provided by first embodiment of the invention；
Fig. 3 is the exemplary circuit structure chart of LED drive circuit provided by second embodiment of the invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
LED drive circuit provided by the present invention includes drive module, mining battery protector, battery and current limliting
Module solves the problems, such as that there are driving circuit safety is low for existing mine anti-explosion flameproof luminaire.
Embodiment 1
Fig. 1 shows the structure of LED drive circuit provided by the present embodiment, for ease of description, illustrates only and this
The relevant part of embodiment, details are as follows:
LED drive circuit provided by the present embodiment includes the drive module for connecting LED module and LED module being driven to work
10。
Further, LED drive circuit further includes mining battery protector U1, battery BAT and current limliting module 20.
Specifically, the input terminal of the anode and mining battery protector U1 of battery BAT connects to form LED drive circuit altogether
The ground terminal of positive charging end, the cathode of battery BAT and mining battery protector U1 are connected to ground altogether and form LED drive circuit
Negative charging end；
The input terminal of the output end connection current limliting module 20 of mining battery protector U1, the output end of current limliting module 20 and drive
The power end of dynamic model block 10 connects the positive output end to form LED drive circuit altogether, and drive module 10 has driving end, drive module 10
Driving end be LED drive circuit negative output terminal.
Specifically, the positive charging end of LED drive circuit and negative charging end are for accessing electric current to realize to battery BAT's
Charging, the positive output end of LED drive circuit and negative output terminal are for connecting LED module, and output services electric current is to LED module.
Further, one third of the electric current that drive module 10 exports lower than the rated operational current of LED module, current limliting
Module 20 includes multiple end to end diodes.
In the present embodiment, mining battery protector can be model BK2.5L(B) mining battery protector；It stores
Battery BAT can be ferric phosphate lithium cell.
In the present embodiment, as shown in Fig. 2, current limliting module 20 may include:
First diode D1, the second diode D2 and third diode D3；
The cathode of first diode D1 connects the anode of the second diode D2, the cathode connection the three or two of the second diode D2
The anode of pole pipe D3, the input terminal of first diode D1 are the input terminals of current limliting module 20, and the anode of third diode D3 is limit
The input terminal of flow module 20.
In the present embodiment, it other than the use higher ferric phosphate lithium cell of safety is as battery, additionally uses specially
Mining battery protector U1, mainly to the over-voltage of battery, under-voltage, overcurrent, short circuit is protected.And in battery
On output loop, uses multiple diodes and carry out multiple protective.
Mining battery protector U1 in the present embodiment, multiple diodes are provided to meet the essential safety world and design
, it is all to belong to protection circuit.Without these circuits, it can also work, but circuit is in unsafe condition, can not be used in mining
In lamps and lanterns.
In the present embodiment, as shown in Fig. 2, drive module 10 may include:
Second resistance R2, switch K1, capacitor C1 and LED drive chip U2；
The power end VDD and driving end LED of LED drive chip U2 is power end and the driving end of drive module 10 respectively,
The first end of the setting end SET and second resistance R2 of LED drive chip U2 are connected to the first end of switch K1 altogether, and the second of switch K1
End is connected to the power end VDD of LED drive chip U2 with the first end of capacitor C1 altogether, the test lead TEST of LED drive chip U2 with
Ground terminal GND is connected to ground altogether, and the second end of second resistance R2 and the second end of capacitor C1 are connected to ground altogether.
In the present embodiment, LED drive chip U2 can be model T6327A-2210BWG, T6327A-3210BWG,
The LED drive chip of T6327A-2210ADG or T6327A-3210ADG.
In the present embodiment, LED drive chip U2 supports the operating voltage of 2.7V to 5V.Two section 3.2V phosphoric acid can be used
The power storage module that it is 6.4V that lithium iron battery, which is connected in series,；Since battery to main control chip before powering, to pass through mining electricity
Pond protector and three diodes, voltage will reduce 2.4V, in this way, arriving the voltage of main control chip just 2.7 between 5V.
There are switching circuit and current detection circuit inside LED drive chip U2, can be obtained according to the model of selected chip
Different electric current output.In addition, LED drive chip U2 is low pressure poor chip, power consumption itself is very low, can effectively extend making for battery
With the time, and has static electricity on human body's protective capacities more than 5KV.
In the present embodiment, the switch of lamps and lanterns, light modulation and flashing operation are all the setting ends according to LED drive chip U2
What the level signal of SET was realized.Resistance R2 is to be mentioned to the setting end SET of LED drive chip U2 in circuit steady operation
For a low level signal.Switch, light modulation and the flashing operation of lamps and lanterns are all mentioned from switch K1 to the setting end SET of driving chip U2
The time span of the high level signal of confession determines.Specifically, second level light modulation, three may be implemented according to the model of used chip
The function that grade light modulation, flashing are flashed with SOS signal combines.
Although present mechanics of communication is very flourishing, SOS signal emergency is seldom used, under mine, in case of
Not the case where not being available to communication apparatus.Issuing this original method of SOS distress signal with light is most effective way.
LED drive circuit provided by the present embodiment is supplied using battery BAT storage electric energy and for entire LED drive circuit
Electricity, and battery BAT is protected using mining battery protector U1, avoid battery BAT from over-voltage, under-voltage, overcurrent occur
Or short circuit phenomenon；In addition, utilizing the exported current limitation of multiple diode pair battery BAT in current limliting module 20；Meanwhile making
Electric current of drive module 10 outputs lower than the one third of the rated operational current of LED module.The above measure all greatly enhances
The safety of LED drive circuit, meets the requirement of intrinsicallysafecircuit.Since entire LED drive circuit has very high peace
Quan Xing allows flameproof luminaire using light and handy shell, to enhance the portability of flameproof luminaire.
Embodiment 2
In the present embodiment, as shown in figure 3, current limliting module 20 includes:
4th diode D4, the 5th diode D5 and first resistor R1；
The cathode of 4th diode D4 connects the anode of the 5th diode D5, the first electricity of cathode connection of the 5th diode D5
The first end of R1 is hindered, the input terminal of the 4th diode D4 is the input terminal of current limliting module 20, and the second end of first resistor R1 is limit
The input terminal of flow module 20.
In the present embodiment, since diode is not belonging to infallible component, and resistance is belonged to infallible component and is replaced using a resistance
One of diode in an embodiment is changed, so that there is infallible component current limliting in circuit.When unreliable component failure, also
There is infallible component protecting, to avoid causing coal-mine fire or explosion.
Specifically, first resistor R1 can use metalfilmresistor or Wound-rotor type resistance.
Embodiment 3
The implementation of the present embodiment is established on the basis of the various embodiments described above.
In the present embodiment, LED drive circuit further includes the 6th diode；
The anode of the cathode connection battery of 6th diode, the anode of the 6th diode is the second of LED drive circuit
Positive charging end.
In the present embodiment, increased 6th diode can make LED drive circuit safer during the charging process, avoid
The unstable electronic component to inside LED drive circuit of charging current causes to damage.
Embodiment 4
The implementation of the present embodiment is established on the basis of the various embodiments described above.
It further include any of the above-described implementation the purpose of the present embodiment is that providing a kind of flameproof luminaire, including LED module
LED drive circuit in example.
In the present embodiment, LED module can be using the white light high power light source of the 1A of rated operational current, drive module
The electric current of 10 reality output 210mA drives LED module, remaining component inside LED drive circuit is also all using being lower than
The operating current of the one third of rated operational current drives, to further enhance the safety of the flameproof luminaire.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of LED drive circuit, special including the drive module for connecting LED module and the LED module being driven to work
Sign is:
The LED drive circuit further includes mining battery protector, battery and current limliting module；
The input terminal of the anode and the mining battery protector of the battery connects to form just filling for the LED drive circuit altogether
The ground terminal of electric end, the cathode of the battery and the mining battery protector connects to form the negative of the LED drive circuit altogether
Charging end is simultaneously connected to ground；
The output end of the mining battery protector connects the input terminal of the current limliting module, the output end of the current limliting module with
The power end of the drive module connects the positive output end to form the LED drive circuit altogether, and the drive module has driving end,
The driving end of the drive module is the negative output terminal of the LED drive circuit；
The electric current of the drive module output is less than the one third of the rated operational current of the LED module, the current limliting mould
Block includes the diode that multiple head and the tail are sequentially connected in series；
The drive module includes:
Second resistance, switch, capacitor and LED drive chip；
The power end of the LED drive chip and driving end are power end and the driving end of the drive module, the LED respectively
The setting end of driving chip and the first end of the second resistance are connected to the first end of switch, the second end of the switch and institute altogether
The first end for stating capacitor is connected to the power end of LED drive chip altogether, and the test lead of the LED drive chip is connected to altogether with ground terminal
The second end of ground, the second end of the second resistance and the capacitor is connected to ground altogether；
The current limliting module includes:
4th diode, the 5th diode and first resistor；
The cathode of 4th diode connects the anode of the 5th diode, described in the cathode connection of the 5th diode
The input terminal of the first end of first resistor, the 4th diode is the input terminal of the current limliting module, the first resistor
Second end is the input terminal of the current limliting module；
The first resistor R1 uses metalfilmresistor or Wound-rotor type resistance.
2. LED drive circuit as described in claim 1, which is characterized in that
The current limliting module includes:
First diode, the second diode and third diode；
The cathode of the first diode connects the anode of second diode, described in the cathode connection of second diode
The anode of third diode, the input terminal of the first diode are the input terminal of the current limliting module, the third diode
Anode be the current limliting module input terminal.
3. LED drive circuit as described in claim 1, which is characterized in that the LED drive circuit further includes the six or two pole
Pipe；
The cathode of 6th diode connects the anode of the battery, and the anode of the 6th diode is that the LED drives
Second positive charging end of dynamic circuit.
4. LED drive circuit as described in claim 1, which is characterized in that the mining battery protector is model
The mining battery protector of BK2.5L (B).
5. LED drive circuit as described in claim 1, which is characterized in that the LED drive chip is model T6327A-
The LED drive chip of 2210BWG, T6327A-3210BWG, T6327A-2210ADG or T6327A-3210ADG.
6. LED drive circuit as described in claim 1, which is characterized in that the battery is ferric phosphate lithium cell.
7. a kind of flameproof luminaire, including LED module, which is characterized in that the flameproof luminaire include claim 1 to
6 described in any item LED drive circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310642606.0A CN104684189B (en) | 2013-12-03 | 2013-12-03 | A kind of LED drive circuit and flameproof luminaire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310642606.0A CN104684189B (en) | 2013-12-03 | 2013-12-03 | A kind of LED drive circuit and flameproof luminaire |
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| Publication Number | Publication Date |
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| CN104684189A CN104684189A (en) | 2015-06-03 |
| CN104684189B true CN104684189B (en) | 2019-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310642606.0A Active CN104684189B (en) | 2013-12-03 | 2013-12-03 | A kind of LED drive circuit and flameproof luminaire |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2645399Y (en) * | 2003-09-28 | 2004-09-29 | 陕西星源照明灯具有限公司 | Miner's lamp with secondary light source |
| CN102223748A (en) * | 2011-06-17 | 2011-10-19 | 苏州半导体总厂有限公司 | Drive method and drive power source of light-emitting diode (LED) lamp with alternating current power supply |
| CN103188842A (en) * | 2011-12-29 | 2013-07-03 | 海洋王照明科技股份有限公司 | Miner lamp |
-
2013
- 2013-12-03 CN CN201310642606.0A patent/CN104684189B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2645399Y (en) * | 2003-09-28 | 2004-09-29 | 陕西星源照明灯具有限公司 | Miner's lamp with secondary light source |
| CN102223748A (en) * | 2011-06-17 | 2011-10-19 | 苏州半导体总厂有限公司 | Drive method and drive power source of light-emitting diode (LED) lamp with alternating current power supply |
| CN103188842A (en) * | 2011-12-29 | 2013-07-03 | 海洋王照明科技股份有限公司 | Miner lamp |
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| Publication number | Publication date |
|---|---|
| CN104684189A (en) | 2015-06-03 |
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