CN206807828U - A kind of conversion equipment - Google Patents
A kind of conversion equipment Download PDFInfo
- Publication number
- CN206807828U CN206807828U CN201720725220.XU CN201720725220U CN206807828U CN 206807828 U CN206807828 U CN 206807828U CN 201720725220 U CN201720725220 U CN 201720725220U CN 206807828 U CN206807828 U CN 206807828U
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- CN
- China
- Prior art keywords
- oxide
- semiconductor
- metal
- constant
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The utility model discloses a kind of conversion equipment, 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 voltage input module, constant-current supply module and the output end of DCDC power supplys are connected with LED, voltage input module is connected by voltage detection module with relay, and relay connects constant-current supply module and DCDC power modules respectively；Constant-current supply module includes one and is used to control the output DCDC control modules of constant current value, the over-voltage detection circuit being connected with DCDC control modules, a current sampling resistor, output current translation circuit, and overvoltage protection resistance.The utility model is that high input voltage or low pressure input by voltage detection module detection access, realizes two kinds of conversions of power supply, easy to use, greatly increases the service life of battery.
Description
Technical field
It the utility model is related to LED applied technical fields, more particularly to a kind of LED power supply change-over device.
Background technology
As the sustainable development of industry and the leap of technology break through, LED has been widely used in display, television set is adopted
The multiple fields such as light decoration and illumination.LED has that cost is low, energy consumption is low, effect on environment is small, stability is strong and is easy to control etc.
Advantage, such as these advantages, all embody bright prospects of the LED light emitting diodes in lighting field.
Prior art is all to provide power supply by independently-powered for LED, is specifically included using mains-supplied and using DCDC
Power supply power supply two ways.Wherein, civil power input connects drivable LED after constant-current supply, but now if input voltage is small
Just can not lightening LED lamp in 40V；And LED can also be driven using DCDC power supplys, but now if input high pressure can not also be lighted
LED etc..Which kind of above-mentioned mode can only all use a kind of power supply mode, can not meet the needs of a variety of power supply modes.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a conversion equipment, and no matter high it is
Pressure or low pressure can lightening LED lamp, realize the Power convert of LED.
The purpose of this utility model is realized using following technical scheme：
A kind of conversion equipment, including constant-current supply module, DCDC power modules, voltage detection module and relay, it is described
The input of constant-current supply module and DCDC power modules is connected with a voltage input module, constant-current supply module and DCDC power supplys
Output end be connected with LED, voltage input module is connected by voltage detection module with relay, and the relay connects respectively
Connect constant-current supply module and DCDC power modules；The constant-current supply module includes one and is used to control output constant current value
DCDC control modules, the over-voltage detection circuit being connected with DCDC control modules, one are connected in the loop of constant-current supply module
Current sampling resistor, at least one output current translation circuit in parallel with the current sampling resistor, and at least one company
The overvoltage protection resistance being connected between the output current translation circuit and over-voltage detection circuit；The output current translation circuit
The first metal-oxide-semiconductor is electrically connected at including a switch, a grid and the first metal-oxide-semiconductor of switch electric connection and one
Current transformation sample circuit between drain electrode and the output of constant-current supply module, the source ground of first metal-oxide-semiconductor, overvoltage detection
Circuit includes the voltage sampling resistor of two series connection, and the overvoltage protection input of DCDC control modules is connected to two voltage samplings
Between resistance, overvoltage protection resistant series are between two voltage sampling resistors and the grid of the first metal-oxide-semiconductor, each output electricity
Stream translation circuit all connects an overvoltage protection resistance.
Preferably, voltage detection module includes the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, voltage input module by a resistance R1 and
The grid of diode D1 the first metal-oxide-semiconductors of connection, voltage input module are connected to the grid of the second metal-oxide-semiconductor by a resistance R2, electricity
Pressure input module is connected by diode D2 with relay, the source ground of the first metal-oxide-semiconductor, the grid and source electrode of the first metal-oxide-semiconductor
Between be arranged in parallel diode D3 and resistance R3, the drain electrode of the first metal-oxide-semiconductor connects with the grid of the second metal-oxide-semiconductor, the second metal-oxide-semiconductor
Source ground, diode D4, electric capacity C1 and resistance R4 are parallel between the grid and source electrode of the second metal-oxide-semiconductor, the second metal-oxide-semiconductor
Drain electrode is connected with relay.
Preferably, the conducting voltage of the diode D1 is 33V.
Preferably, voltage input module connects civil power and low tension battery respectively.
Preferably, the DCDC control modules include a constant current feedback input end, the constant current feedback input end and electric current
One end of sample resistance is electrically connected with.
Compared with prior art, the beneficial effects of the utility model are：
What the utility model detected access by voltage detection module is that high input voltage or low pressure input, when needing high pressure
Constant-current supply module drive LED is connected by relay when input provides power supply, led to when needing low pressure input to provide power supply
Cross relay and connect DCDC power modules driving LED, realize two kinds of conversions of power supply, it is easy to use, greatly increase battery
Service life.
Brief description of the drawings
Fig. 1 is a kind of function structure chart of conversion equipment of the present utility model；
Fig. 2 is the circuit structure diagram of voltage detection module of the present utility model.
Embodiment
Below, with reference to accompanying drawing and embodiment, the utility model is described further：
As depicted in figs. 1 and 2, the utility model provides a kind of conversion equipment, and it includes constant-current supply module, DCDC power supplys
The input and a voltage input module of module, voltage detection module and relay, constant-current supply module and DCDC power modules
Connection, the output end of constant-current supply module and DCDC power supplys are connected with LED, voltage input module by voltage detection module with
Relay is connected, and relay connects constant-current supply module and DCDC power modules respectively.
Voltage detection module includes the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, and voltage input module passes through a resistance R1 and diode
The grid of D1 the first metal-oxide-semiconductors of connection, voltage input module are connected to the grid of the second metal-oxide-semiconductor, control source by a resistance R2
Module is connected by diode D2 with relay, the source ground of the first metal-oxide-semiconductor, between the grid and source electrode of the first metal-oxide-semiconductor simultaneously
Connection is provided with diode D3 and resistance R3, and the drain electrode of the first metal-oxide-semiconductor connects with the grid of the second metal-oxide-semiconductor, the source electrode of the second metal-oxide-semiconductor
Ground connection, is parallel with diode D4, electric capacity C1 and resistance R4 between the grid and source electrode of the second metal-oxide-semiconductor, the drain electrode of the second metal-oxide-semiconductor with
Relay is connected.Wherein, diode D1 conducting voltage is 33V.
Voltage input module connects civil power and low tension battery respectively.
When access be civil power when, the voltage of voltage detection module detection input, the civil power of alternating current 220V is whole through gap bridge heap
After stream, 300V or so voltage is obtained, then passes sequentially through resistance R1, diode D1, diode D3 and resistance R3, in metal-oxide-semiconductor Q1
Grid go out to obtain high level, now metal-oxide-semiconductor Q1 is turned on, corresponding, and metal-oxide-semiconductor Q2 grid be low level, and metal-oxide-semiconductor Q2 is in section
Only state, it is not turned on, therefore relay is failure to actuate, civil power passes through constant-current supply module drive LED.What it is when access is that low pressure stores
During battery, the voltage of voltage detection module detection input, direct current 24V passes through resistance R1 and diode D2 successively, because diode
D1 conducting voltage is 33V, so direct current 24V deficiencies turn on diode D1, voltage cannot get through, resistance R3 ground connection, metal-oxide-semiconductor Q1
Grid be low level, metal-oxide-semiconductor Q1 is in cut-off state.First metal-oxide-semiconductor Q1 is off state, and direct current 24V is arrived by resistance R2
Metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q2 grid are in high level, metal-oxide-semiconductor Q2 conductings, and relay is connected, and direct current 24V is direct by relay
DCDC power modules are input to, so as to drive LED.
Constant-current supply module includes the DCDC control modules and DCDC control modules for being used to control output constant current value
The over-voltage detection circuit of connection, one be connected on current sampling resistor in the loop of constant-current supply module, it is at least one with it is described
Current sampling resistor output current translation circuit in parallel, and at least one it is connected to the output current translation circuit and mistake
Overvoltage protection resistance between pressure detection circuit.It is electrical that output current translation circuit includes a switch, a grid and switch
Electric current between first metal-oxide-semiconductor of connection and a drain electrode for being electrically connected at the first metal-oxide-semiconductor and the output of constant-current supply module
Transform sampling circuit, the source ground of first metal-oxide-semiconductor.
Over-voltage detection circuit includes the voltage sampling resistor of two series connection, and the overvoltage protection input of DCDC control modules connects
It is connected between two voltage sampling resistors, overvoltage protection resistant series are in two voltage sampling resistors and the grid of the first metal-oxide-semiconductor
Between, each output current translation circuit connects an overvoltage protection resistance.Defining two voltage sampling resistors one is
Resistance a mono- is resistance b, and resistance b is not connected to resistance a one end ground connection.
DCDC control modules include a DCDC control chip, and coordinate the peripheral circuit of the chip, its internal tool
Body principle is prior art, and therefore not to repeat here.Over-voltage detection circuit is used to provide whole constant-current supply for DCDC control modules
Loop in voltage swing signal, to trigger overvoltage protection switch by DCDC control chips in due course, so as to right
Whole circuit carries out overvoltage protection.According in general voltage sampling principle, under normal circumstances, voltage sampling resistor b is carried in
On voltage be sampling voltage because voltage sampling resistor b one end ground connection, voltage 0.When voltage rise in loop, take
Sample voltage also raises, when more than given threshold, DCDC control chips just switch-off power output switching terminal.Current sampling resistor
For obtaining the size of current in whole loop, according to the feedback, DCDC control chips can control or adjust the electric current of its output
Value.
DCDC control modules include a constant current feedback input end, and the one of the constant current feedback input end and current sampling resistor
End is electrically connected with.
Constant-current supply of the present utility model can complete the output of a variety of current values using output current translation circuit, so as to
Adapting to different LED loads so that a power supply can apply a variety of occasions, both reduce production cost, also save resource,
The use of user is additionally favorable for simultaneously.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
Corresponding change and deformation, and all these changes and deformation should all belong to the protection of the utility model claims
Within the scope of.
Claims (5)
- A kind of 1. conversion equipment, it is characterised in that including constant-current supply module, DCDC power modules, voltage detection module and after The input of electrical equipment, the constant-current supply module and DCDC power modules is connected with a voltage input module, constant-current supply module Be connected with LED with the output end of DCDC power supplys, voltage input module is connected by voltage detection module with relay, it is described after Electrical equipment connects constant-current supply module and DCDC power modules respectively；The constant-current supply module includes one and is used to control output constant The DCDC control modules of current value, the over-voltage detection circuit being connected with DCDC control modules, one are connected on constant-current supply module Current sampling resistor, at least one output current translation circuit in parallel with the current sampling resistor in loop, Yi Jizhi Few overvoltage protection resistance being connected between the output current translation circuit and over-voltage detection circuit；The output current Translation circuit includes a switch, a grid and the first metal-oxide-semiconductor of switch electric connection and one and is electrically connected at first Current transformation sample circuit between the drain electrode of metal-oxide-semiconductor and the output of constant-current supply module, the source ground of first metal-oxide-semiconductor, Over-voltage detection circuit includes the voltage sampling resistor of two series connection, and the overvoltage protection input of DCDC control modules is connected to two Between voltage sampling resistor, overvoltage protection resistant series are each between two voltage sampling resistors and the grid of the first metal-oxide-semiconductor Individual output current translation circuit all connects an overvoltage protection resistance.
- 2. conversion equipment as claimed in claim 1, it is characterised in that the voltage detection module includes the second metal-oxide-semiconductor, the 3rd Metal-oxide-semiconductor, voltage input module connect the grid of the first metal-oxide-semiconductor by a resistance R1 with diode D1, and voltage input module passes through One resistance R2 is connected to the grid of the second metal-oxide-semiconductor, and voltage input module is connected by diode D2 with relay, the first metal-oxide-semiconductor Source ground, diode D3 and resistance R3, the leakage of the first metal-oxide-semiconductor have been arranged in parallel between the grid and source electrode of the first metal-oxide-semiconductor Pole is connected with the grid of the second metal-oxide-semiconductor, the source ground of the second metal-oxide-semiconductor, and two are parallel between the grid and source electrode of the second metal-oxide-semiconductor Pole pipe D4, electric capacity C1 and resistance R4, the drain electrode of the second metal-oxide-semiconductor are connected with relay.
- 3. conversion equipment as claimed in claim 2, it is characterised in that the conducting voltage of the diode D1 is 33V.
- 4. conversion equipment as claimed in claim 1, it is characterised in that voltage input module connects civil power and low pressure electric power storage respectively Pond.
- 5. conversion equipment as claimed in claim 1, it is characterised in that it is defeated that the DCDC control modules include a constant current feedback Enter end, one end electric connection of the constant current feedback input end and current sampling resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720725220.XU CN206807828U (en) | 2017-06-20 | 2017-06-20 | A kind of conversion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720725220.XU CN206807828U (en) | 2017-06-20 | 2017-06-20 | A kind of conversion equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206807828U true CN206807828U (en) | 2017-12-26 |
Family
ID=60749397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720725220.XU Expired - Fee Related CN206807828U (en) | 2017-06-20 | 2017-06-20 | A kind of conversion equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206807828U (en) |
-
2017
- 2017-06-20 CN CN201720725220.XU patent/CN206807828U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20171226 Termination date: 20190620 |