CN206251405U - A kind of power supply change-over device for LED - Google Patents
A kind of power supply change-over device for LED Download PDFInfo
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- CN206251405U CN206251405U CN201621434626.4U CN201621434626U CN206251405U CN 206251405 U CN206251405 U CN 206251405U CN 201621434626 U CN201621434626 U CN 201621434626U CN 206251405 U CN206251405 U CN 206251405U
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Abstract
The utility model discloses a kind of power supply change-over device for LED, including constant-current supply module, DCDC power modules, voltage detection module and relay, the input of constant-current supply module and DCDC power modules is connected with a control source module, the output end of constant-current supply module and DCDC power modules is connected with LED, control source module is connected by voltage detection module with relay, and relay connects constant-current supply module and DCDC power modules respectively.By voltage detection module detection access is that high input voltage or low pressure are input into, constant-current supply module drive LED is connected by relay when needing high input voltage to provide power supply, connecting DCDC power modules by relay when needing low pressure to be input into and providing power supply drives LED.No matter by high input voltage or low pressure input can lightening LED lamp, have the advantages that it is easy to use, while have also increased dramatically the service life of battery.
Description
Technical field
The utility model is related to LED applied technical fields, more particularly to a kind of power supply change-over device for LED.
Background technology
As the sustainable development of industry and the leap of technology break through, LED has been widely used in display, television set and has adopted
The multiple fields such as light decoration and illumination.LED has that low cost, energy consumption are low, effect on environment is small, stability is strong and is easy to control etc.
Advantage, such as these advantages, have all embodied bright prospects of the LED light emitting diodes in lighting field.
Prior art is all, for LED provides power supply, to specifically include using mains-supplied and use by independently-powered
DCDC power supplys are powered two ways.Wherein, civil power input can drive LED after connecing constant-current supply, if but now input voltage
Just cannot lightening LED lamp less than 40V；And LED can be also driven using DCDC power supplys, if but now input high pressure also cannot point
Bright LED.No matter above-mentioned which kind of mode, can only all use a kind of power supply mode, it is impossible to meet the demand of various power supply modes.Example
During as aboard ship used LED, needing to be switched to civil power when beaching and be powered, DCDC electricity is then switched to when navigation
Source is powered.
Therefore, how to be input into by high input voltage and low pressure can lightening LED lamp this problem for industry urgent need to resolve.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of Power convert dress for LED
Put, no matter by high input voltage or low pressure be input into can lightening LED lamp, have the advantages that it is easy to use, while also greatly
Increased the service life of battery.
The utility model solve technical scheme that its technical problem used for：A kind of Power convert dress for LED
Put, including constant-current supply module, DCDC power modules, voltage detection module and relay, the constant-current supply module and DCDC
The input of power module is connected with a control source module, and the output end of the constant-current supply module and DCDC power modules connects
LED is connected to, the control source module is connected by voltage detection module with relay, and the relay connects constant current respectively
Power module and DCDC power modules.
Further, the voltage detection module includes the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, the control source module
The G poles of the first metal-oxide-semiconductor Q1 are connected by resistance R1 and diode D1, the control source module connects second by resistance R2
The G poles of metal-oxide-semiconductor Q2, the control source module is connected by diode D2 with relay, and the S poles of the first metal-oxide-semiconductor Q1 connect
Ground, has been arranged in parallel diode D3 and resistance R3, the D of the first metal-oxide-semiconductor Q1 between the G poles and S poles of the first metal-oxide-semiconductor Q1
Pole is extremely connected with the G of the second metal-oxide-semiconductor Q2, the S poles ground connection of the second metal-oxide-semiconductor Q2, between the G poles and S poles of the second metal-oxide-semiconductor Q2 simultaneously
Connection is provided with diode D4, electric capacity C1 and resistance R4, and the D poles of the second metal-oxide-semiconductor Q2 are connected with relay.
Further, the conducting voltage of the diode D1 is 33V.
Further, the control source module connects civil power and low tension battery respectively.
Further, the voltage of the civil power is alternating current 220V.
Further, the voltage of the low tension battery is direct current 24V.
The beneficial effects of the utility model have：By voltage detection module detection access is that high input voltage or low pressure are defeated
Enter, constant-current supply module drive LED is connected by relay when needing high input voltage to provide power supply, be input into when low pressure is needed
DCDC power modules are connected by relay when power supply is provided and drives LED.User can as needed select different power supplys, nothing
By by high input voltage or low pressure be input into can lightening LED lamp, have the advantages that it is easy to use, while have also increased dramatically
The service life of battery.
Brief description of the drawings
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail, wherein：
Fig. 1 is the module diagram of the utility model power supply change-over device；
Fig. 2 is the circuit theory diagrams of the utility model voltage detection module.
Specific embodiment
Referring to Fig. 1, Fig. 1 is the module diagram of the utility model power supply change-over device.A kind of power supply for LED turns
Changing device, including constant-current supply module 1, DCDC power modules 2, voltage detection module 3 and relay 4, the constant-current supply mould
The input of block 1 and DCDC power modules 2 is connected with a control source module 5, the constant-current supply module 1 and DCDC power supply moulds
The output end of block 2 is connected with LED, and the control source module 5 is connected by voltage detection module 3 with relay 4, it is described after
Electrical equipment 4 connects constant-current supply module 1 and DCDC power modules 2 respectively.By the detection access of voltage detection module 3 is defeated high pressure
Enter or low pressure input, connecting constant-current supply module 1 by relay 4 when needing high input voltage to provide power supply drives LED,
DCDC power modules 2 are connected by relay 4 when needing low pressure to be input into and providing power supply and drives LED.User can be as needed
The different power supplys of selection, no matter by high input voltage or low pressure input can lightening LED lamp, have the advantages that it is easy to use,
The service life of battery is have also increased dramatically simultaneously.
Referring to Fig. 2, Fig. 2 is the circuit theory diagrams of the utility model voltage detection module 3.The voltage detection module 3 is wrapped
The first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 is included, the control source module 5 connects the first metal-oxide-semiconductor by resistance R1 and diode D1
The G poles of Q1, the control source module 5 connects the G poles of the second metal-oxide-semiconductor Q2 by resistance R2, and the control source module 5 passes through
Diode D2 is connected with relay 4, the S poles ground connection of the first metal-oxide-semiconductor Q1, between the G poles and S poles of the first metal-oxide-semiconductor Q1
Diode D3 and resistance R3 is arranged in parallel, the D poles of the first metal-oxide-semiconductor Q1 are extremely connected with the G of the second metal-oxide-semiconductor Q2, the 2nd MOS
The S poles ground connection of pipe Q2, diode D4, electric capacity C1 and resistance R4 have been arranged in parallel between the G poles and S poles of the second metal-oxide-semiconductor Q2,
The D poles of the second metal-oxide-semiconductor Q2 are connected with relay 4.
Specifically, the conducting voltage of the diode D1 is 33V, and the control source module 5 connects civil power and low respectively
Pressure battery, the voltage of the civil power is alternating current 220V, and the voltage of the low tension battery is direct current 24V.
Voltage detection module 3 is connected with control source module 5, and the control source module 5 connects civil power and low pressure respectively
Battery.Relay 4 connects constant-current supply module 1, it is necessary to relay 4 when using low tension battery when user needs to use civil power
Connect DCDC power modules 2.
When access be civil power when, the voltage of the detection input of voltage detection module 3, the civil power of alternating current 220V is whole through gap bridge heap
After stream, the voltage of 300V or so is obtained, then pass sequentially through resistance R1, diode D1, diode D3 and resistance R3, in a MOS
The G poles of pipe Q1 obtain high level, now the first metal-oxide-semiconductor Q1 conductings.Accordingly, the G extremely low levels of the second metal-oxide-semiconductor Q2, second
Metal-oxide-semiconductor Q2 is in cut-off state, is not turned on, therefore relay 4 is just failure to actuate, and civil power drives LED by constant-current supply module 1
Lamp, LED is lit.
When access be low tension battery when, the voltage of the detection input of voltage detection module 3, direct current 24V sequentially passes through electricity
Resistance R1 and diode D1, because the conducting voltage of diode D1 is 33V, direct current 24V deficiencies turn on diode D1, voltage
Cannot get through, resistance R3 ground connection, then the G extremely low levels of the first metal-oxide-semiconductor Q1, the first metal-oxide-semiconductor Q1 is in cut-off state.Because the
One metal-oxide-semiconductor Q1 is off state, and direct current 24V is in electricity high by the G poles of the metal-oxide-semiconductors of resistance R2 to second Q2, the second metal-oxide-semiconductor Q2
Flat, the second metal-oxide-semiconductor Q2 conductings, relay 4 is connected, and direct current 24V is directly inputted to DCDC power modules 2, DCDC by relay 4
Power module 2 drives LED, LED to be lit.
The above, simply better embodiment of the present utility model, but the utility model is not limited to above-mentioned reality
Example is applied, as long as it reaches technique effect of the present utility model with any same or similar means, should all belong to of the present utility model
Protection domain.
Claims (6)
1. a kind of power supply change-over device for LED, it is characterised in that：Including constant-current supply module（1）, DCDC power modules
（2）, voltage detection module（3）And relay（4）, the constant-current supply module（1）With DCDC power modules（2）Input with
One control source module（5）It is connected, the constant-current supply module（1）With DCDC power modules（2）Output end be connected with LED
Lamp, the control source module（5）By voltage detection module（3）With relay（4）It is connected, the relay（4）Connect respectively
Connect constant-current supply module（1）With DCDC power modules（2）.
2. a kind of power supply change-over device for LED according to claim 1, it is characterised in that：The voltage detecting
Module（3）Including the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, the control source module（5）Connected by resistance R1 and diode D1
Connect the G poles of the first metal-oxide-semiconductor Q1, the control source module（5）The G poles of the second metal-oxide-semiconductor Q2, the voltage are connected by resistance R2
Input module（5）By diode D2 and relay（4）It is connected, the S poles ground connection of the first metal-oxide-semiconductor Q1, first metal-oxide-semiconductor
D poles and the second metal-oxide-semiconductor Q2 of diode D3 and resistance R3, the first metal-oxide-semiconductor Q1 have been arranged in parallel between the G poles and S poles of Q1
G be extremely connected, the S poles of the second metal-oxide-semiconductor Q2 ground connection has been arranged in parallel diode between the G poles and S poles of the second metal-oxide-semiconductor Q2
D4, electric capacity C1 and resistance R4, the D poles of the second metal-oxide-semiconductor Q2 and relay（4）It is connected.
3. a kind of power supply change-over device for LED according to claim 2, it is characterised in that：The diode D1
Conducting voltage be 33V.
4. a kind of power supply change-over device for LED according to claim 1, it is characterised in that：The control source
Module（5）Civil power and low tension battery are connected respectively.
5. a kind of power supply change-over device for LED according to claim 4, it is characterised in that：The electricity of the civil power
It is alternating current 220V to press.
6. a kind of power supply change-over device for LED according to claim 4, it is characterised in that：The low pressure electric power storage
The voltage in pond is direct current 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621434626.4U CN206251405U (en) | 2016-12-23 | 2016-12-23 | A kind of power supply change-over device for LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621434626.4U CN206251405U (en) | 2016-12-23 | 2016-12-23 | A kind of power supply change-over device for LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206251405U true CN206251405U (en) | 2017-06-13 |
Family
ID=59008132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621434626.4U Active CN206251405U (en) | 2016-12-23 | 2016-12-23 | A kind of power supply change-over device for LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206251405U (en) |
-
2016
- 2016-12-23 CN CN201621434626.4U patent/CN206251405U/en active Active
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