CN208922671U - A kind of portable type solar energy LED display board - Google Patents
A kind of portable type solar energy LED display board Download PDFInfo
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- CN208922671U CN208922671U CN201821834727.XU CN201821834727U CN208922671U CN 208922671 U CN208922671 U CN 208922671U CN 201821834727 U CN201821834727 U CN 201821834727U CN 208922671 U CN208922671 U CN 208922671U
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- circuit
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- lithium battery
- anode
- led display
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Abstract
The utility model discloses a kind of portable type solar energy LED display boards, it is characterised in that: including charging storage unit and LED display control unit；Charging storage unit includes lithium battery, lithium battery voltage sample circuit, voltage comparator, the rectifier circuit that electric main is rectified, solar panel, the power output end of solar panel and the output end of rectifier circuit are in parallel, circuit after parallel connection is also connected with filter regulator circuit, the output end of filter regulator circuit is connected to the first voltage input terminal of voltage comparator after passing through bleeder circuit, the output end of filter regulator circuit also passes through switching circuit and connect respectively with the second voltage input terminal of the anode of lithium battery and voltage comparator, lithium battery anode is connect with the sampling end of lithium battery voltage sample circuit, the utility model is on the basis of traditional Led display board, it joined the function of charging storage, the characteristics of capable of generating electricity outdoors in combination with solar panel, it is used in combination, people are met for portable L The demand of ed display board.
Description
Technical field
The utility model relates to LED display technical fields, and in particular to a kind of portable type solar energy LED display board.
Background technique
The important medium that Led display board is propagated as information, has been widely used in indoor and outdoor and has needed to show figure
The public place that service content and service aim publicity are carried out with Chinese character, such as megastore, station, harbour, subway station, food and drink report
Valence, building lamp decoration, traffic lights, Landscape Lighting and all kinds of working windows etc..Obviously, Led, which is shown, has become city lighting, shows
One important symbol of generationization and informationized society.But for open air, the Led display board especially temporarily set up, due to outer
Power supply is connect, the laying for route is very troublesome, and with high costs.This requires one kind not to need external power supply, energy
Precharge or the Led display board for having power generator in itself, portable type solar energy Led display board are exactly needed in this background
It asks down and expedites the emergence of.
Utility model content
Based on the deficiencies of the prior art, the utility model provides a kind of portable type solar energy Led display board, in conjunction with Led
The practicability of display board in daily life, while this self-contained solar panels, can carry out to included battery every now and then
Charging supplements electricity, meets people for the outdoor portable demand of Led display board.
To achieve the above object, the technical solution of the utility model are as follows:
A kind of portable type solar energy LED display board, it is characterised in that: including charging storage unit and LED display control unit；
The charging storage unit includes lithium battery, lithium battery voltage sample circuit, voltage comparator, carries out to electric main
The output end of rectifier circuit, the solar panel of rectification, the power output end of solar panel and rectifier circuit is simultaneously
Connection, the circuit after parallel connection are also connected with filter regulator circuit, and the output end of the filter regulator circuit after bleeder circuit by connecting
The first voltage input terminal in the voltage comparator is connect, for providing reference voltage, the filtering voltage regulation for lithium battery
The output end of circuit also passes through switching circuit and connect respectively with the second voltage input terminal of the anode of lithium battery and voltage comparator,
The lithium battery anode is also connect with the sampling end of the lithium battery voltage sample circuit, and when lithium battery voltage sampling electricity
When the voltage of road acquisition is lower than reference voltage, the voltage comparator output signal control switch circuit is opened for the lithium
Battery charging, when the voltage of lithium battery voltage sample circuit acquisition is higher than reference voltage, the voltage comparator
The not signal that output control switch circuit is opened, the output end of the filter regulator circuit are not lithium battery charging；
The LED display control unit includes LED common anode lattice module, single-chip microcontroller, latch and several LED triodes
Drive module, each I/O port of the first delivery outlet of the single-chip microcontroller are connected respectively each described LED triode and drive
The driving end of dynamic model block, the output end of each LED triode drive module are connected respectively LED common anode lattice module
Each common-anode, second delivery outlet of single-chip microcontroller connects the latch, each I/O port point of the latch output
It is not correspondingly connected with the cathode of the LED light of the common-anode of LED common anode lattice module.
Further, several described LED triode drive module structures are identical, include the first PNP triode and electricity
Resistance, the I/O port connection of the first delivery outlet of the grid and single-chip microcontroller of first PNP triode, tri- pole the first PNP
It is grounded after resistance described in the drain series of pipe, the source electrode of first PNP triode connects positive pole, the LED common anode point
Each common-anode of array module is connect with the drain electrode of the first PNP triode respectively, is connected to the yin of the LED light on same common-anode
Pole is connect with the IO of latch respectively.
Further, the both ends of the lithium battery be also parallel with for being overcharged to lithium battery, over-discharge and short circuit overcurrent
The li-ion cell protection unit of protection.
Further, the li-ion cell protection unit includes the battery protection chip and its peripheral circuit of model DW01.
Further, the bleeder circuit includes first resistor R1 and the first zener diode D3, the first resistor
First end is connect with the output end of the filter regulator circuit, and second end is connect with the cathode of the first zener diode D3,
The plus earth of the first zener diode D3, the cathode of the first zener diode D3 and the cathode of voltage comparator connect
It connects.
Further, the voltage of the first zener diode D3 negative pole end is 4.2V.
Further, the sample circuit includes the second resistance R5 being cascaded and first capacitor C5, and described first
The other end of capacitor C5 is grounded, and the other end of the second resistance R5 and the anode of lithium battery connect.
Further, the switching circuit includes the second PNP type triode and 3rd resistor R9, second positive-negative-positive three
The drain electrode of pole pipe is connect with the output end of the filter regulator circuit, the output end connection of grid and voltage comparator, source electrode point
It is not connect with the anode of the anode of lithium battery and voltage comparator, when the voltage of sample circuit acquisition is lower than 4.3V, voltage ratio
Low-voltage is exported compared with device, the conducting of the second PNP triode charges to lithium battery；When sampling circuit samples voltage is higher than 4.3V
When, voltage comparator output HIGH voltage, the second PNP triode cut-off does not charge to lithium battery.
Preferably, the latch uses the latch of model 74HC573.
The utility model has the following beneficial effects: joined the function of charging storage, together on the basis of traditional Led display board
When combine solar panel the characteristics of capable of generating electricity outdoors, be used in combination, meet people for portable Led display board
Demand, application prospect are good.
Detailed description of the invention
Fig. 1 be the utility model specific embodiment the rectifier circuit being connect respectively with alternating current and solar panel and
The filter regulator circuit being connect with rectifier circuit；
Fig. 2 is switching circuit, sample circuit, comparator and the li-ion cell protection unit of the utility model specific embodiment
Catenation principle figure；
Fig. 3 is the structure principle chart of the LED display control unit of the utility model specific embodiment.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to the design of the utility model, specific structure and generation
It clearly and completely describes, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment
It is a part of the embodiment of the utility model, rather than whole embodiments, it is based on the embodiments of the present invention, the skill of this field
Art personnel other embodiments obtained without creative efforts belong to the model of the utility model protection
It encloses.
A kind of portable solar energy Led display board provided in this embodiment is one kind itself with charging storage function, and
The device of information needed is intelligently shown in Led display board by control circuit.
The device includes three layers: positive layer Led display panel；Middle layer charging storage unit, Led display control unit two
Circuit control unit；Back layer solar panel.
As shown in Figs. 1-2, charging storage unit, design charging process can pass through electric main or solar panel direct current
Two ways.Including lithium battery, lithium battery voltage sample circuit, voltage comparator, electric main, electric main is rectified
Rectifier circuit, solar panel, the power output end of solar panel and the output end of rectifier circuit are in parallel, and
Circuit after connection is also connected with filter regulator circuit, and the output end of the filter regulator circuit is by being connected to institute after bleeder circuit
The first voltage input terminal for stating voltage comparator, for providing reference voltage for lithium battery, the filter regulator circuit
Output end also passes through switching circuit and connect respectively with the second voltage input terminal of the anode of lithium battery and voltage comparator, the lithium
Anode is also connect with the sampling end of the lithium battery voltage sample circuit, and when the lithium battery voltage sample circuit acquires
Voltage be lower than reference voltage when, the voltage comparator output signal control switch circuit is opened for the lithium battery and fills
Electricity, when the voltage of lithium battery voltage sample circuit acquisition is higher than reference voltage, the voltage comparator is not exported
The signal that control switch circuit is opened, the output end of the filter regulator circuit are not lithium battery charging；
Exchange 220v exchanges 22v by becoming after transformation, is converted to direct current by full bridge rectifier, then passes through filter
Wave rectification circuit is converted to required voltage, and filter rectifier makees low-and high-frequency filtering using two polar capacitors C1, C2, connects
Three terminal regulator LM7815CT exports direct voltage 15V, and back reconnects bipolarity capacitor C3, C4 and makees low-and high-frequency filtering, then connects
Voltage-stablizer LM317AH is met, by adjusting resistance R6, stablizes both ends output in 5V.In addition, solar panel (15V < voltage
Value < 22V) it is linked into the output end of full bridge rectifier, and by diode D6, prevent and mutually gone here and there after AC transformation.In this way,
When not having electric main charging, punching electricity can be realized by solar panel.
The bleeder circuit includes first resistor R1 and the first zener diode D3, the first end of the first resistor and institute
The output end connection of filter regulator circuit is stated, second end is connect with the cathode of the first zener diode D3, and described first is steady
The plus earth of diode D3 is pressed, the cathode of the first zener diode D3 and the cathode of voltage comparator connect.
The voltage of the first zener diode D3 negative pole end is 4.2V.
The lithium battery voltage sample circuit includes the second resistance R5 being cascaded and first capacitor C5, and described first
The other end of capacitor C5 is grounded, and the other end of the second resistance R5 and the anode of lithium battery connect.
The switching circuit includes the second PNP type triode and 3rd resistor R9, the drain electrode of second PNP type triode
Connect with the output end of the filter regulator circuit, the connection of the output end of grid and voltage comparator, source electrode respectively with lithium battery
Anode and voltage comparator anode connection, when sample circuit acquisition voltage be lower than 4.3V when, voltage comparator output it is low
Voltage, the second PNP triode conducting, charges to lithium battery；When sampling circuit samples voltage is higher than 4.3V, voltage compares
Device output HIGH voltage, the second PNP triode cut-off, does not charge to lithium battery.
The present embodiment charging storage unit mainly passes through rectifier circuit or solar battery after pressure stabilizing, through over sampling ratio
It charges to circuit to lithium battery, charging and discharging lithium battery process is monitored by li-ion cell protection unit, prevents from overcharging, mistake
It puts and short-circuit.
Led display control unit is mainly by single-chip minimum system, the row data control circuit of Led dot matrix, Led dot matrix
Column scan driving circuit composition.
As shown in figure 3, the LED display control unit hardware circuit includes LED dot matrix common anode module, single-chip microcontroller, latch
Device and several LED triode drive modules, the operating voltage of every LED of LED dot matrix common anode module is about 1.8V, and electric current is about
10mA.When dot matrix common anode end is connected to high level as column (y), and female end a line (x) level is low at this time, the position dot matrix (x, y)
The Led set is lit.When carrying out column scan with the signal of certain frequency, while when row data constantly export, as long as frequency is sufficient
It is enough fast, due to the persistence of vision effect of people, just feel to see complete text and pattern, to this, we use two of single-chip microcontroller
Port carries out column scan and the output of row data.
Due to the operating current about 10mA of every Led, and one-chip machine port does not supply so big electric current, and to this, we will
The port of the defeated trip data of single-chip microcontroller is connected to latch 74HC573, on the one hand prevents high-frequency signal from interfering, loss of data；It is another
Aspect is by latch as buffering, and to every Led power supply, and latch 74HC573 can also load the electric current of 10mA.In order to every
There is appropriate brightness when Led work, while preventing overcurrent from burning out Led, resistance need to be accessed before Led.Electric current is arranged in we
15mA, and 74HC573 exports low pressure about 0.2V, Led operating voltage about 1.5V, power supply+5V are through triode Vce inside 74HC573
About 0.2V is lost in saturation voltage, and by calculating, which is about 200 ohm, for 8*8 dot matrix, when all rows (8 of a certain column
Led) it is all bright when, there are about 120mA for electric current, this electric current for single-chip microcontroller is excessive, need to independently be driven by circuit, we are right
Each column Led is driven with a PNP triode circuit.When single-chip microcontroller column end signal exports high level, PNP triode is not
Logical, Led common anode is terminated at low level, and permutation does not work；When single-chip microcontroller column end signal exports low level, PNP triode conducting,
Led common anode end is pulled to high level, and permutation can be bright, and particular circuit configurations include: each IO of the first delivery outlet of single-chip microcontroller
Mouth is connected respectively the driving end of each LED triode drive module, each described LED triode drive module
Output end be connected respectively each common-anode of LED common anode lattice module, described in the second delivery outlet of single-chip microcontroller connection
Latch, each I/O port of the latch output are connected respectively the LED light of the common-anode of LED common anode lattice module
Cathode.Several described LED triode drive module structures are identical, include the first PNP triode and resistance, described first
One I/O port of the first delivery outlet of the grid and single-chip microcontroller of PNP triode connects, the drain series of first PNP triode
It is grounded after the resistance, the source electrode of first PNP triode connects positive pole, each of described LED common anode lattice module
Common-anode is connect with the drain electrode of the first PNP triode respectively, be connected to the cathode of the LED light on same common-anode respectively with latch
The IO connection of device.
In conclusion each row data of single-chip microcontroller Single port output Led dot matrix are prevented by data register in latch
High-frequency signal interference, loss of data, and by latch to every Led power supply；Another port is synchronous to carry out Led column scan ,+5V
Power-supply system gives single-chip microcontroller, latch and column drive circuit power supply respectively.
It is the preferred embodiment of the utility model it should be noted that described above, the utility model not office
It is limited to above embodiment, as long as its technical effect for reaching the utility model with identical means, it is practical new all should belong to this
The protection scope of type.
Claims (9)
1. a kind of portable type solar energy LED display board, it is characterised in that: including charging storage unit and LED display control unit；
The charging storage unit includes lithium battery, lithium battery voltage sample circuit, voltage comparator, rectifies to electric main
Rectifier circuit, solar panel, the power output end of solar panel and the output end of rectifier circuit are in parallel, and
Circuit after connection is also connected with filter regulator circuit, and the output end of the filter regulator circuit is by being connected to institute after bleeder circuit
The first voltage input terminal for stating voltage comparator, for providing reference voltage for lithium battery, the filter regulator circuit
Output end also passes through switching circuit and connect respectively with the second voltage input terminal of the anode of lithium battery and voltage comparator, the lithium
Anode is also connect with the sampling end of the lithium battery voltage sample circuit, and when the lithium battery voltage sample circuit acquires
Voltage be lower than reference voltage when, the voltage comparator output signal control switch circuit is opened for the lithium battery and fills
Electricity, when the voltage of lithium battery voltage sample circuit acquisition is higher than reference voltage, the voltage comparator is not exported
The signal that control switch circuit is opened, the output end of the filter regulator circuit are not lithium battery charging；
The LED display control unit includes LED common anode lattice module, single-chip microcontroller, latch and the driving of several LED triodes
Module, each I/O port of the first delivery outlet of the single-chip microcontroller are connected respectively each described LED triode driving mould
The driving end of block, the output end of each LED triode drive module are connected respectively each of LED common anode lattice module
A common-anode, second delivery outlet of single-chip microcontroller connect the latch, each I/O port of the latch output is right respectively
The cathode of the LED light of the common-anode of LED common anode lattice module should be connected.
2. portable type solar energy LED display board as described in claim 1, it is characterised in that: several described LED triodes drive
Dynamic model block structure is identical, includes the first PNP triode and resistance, and the of the grid of first PNP triode and single-chip microcontroller
One I/O port of one delivery outlet connects, and is grounded after resistance described in the drain series of first PNP triode, the first PNP
The source electrode of triode connects positive pole, each common-anode of the LED common anode lattice module respectively with the first PNP triode
Drain electrode connection, the cathode for the LED light being connected on same common-anode are connect with the IO of latch respectively.
3. portable type solar energy LED display board as described in claim 1, it is characterised in that: the both ends of the lithium battery are also simultaneously
It is associated with for being overcharged to lithium battery, the li-ion cell protection unit of over-discharge and short circuit overcurrent protection.
4. portable type solar energy LED display board as claimed in claim 3, it is characterised in that: the lithium battery includes unit packet
Include the battery protection chip and its peripheral circuit of model DW01.
5. portable type solar energy LED display board as described in claim 1, it is characterised in that: the bleeder circuit includes first
Resistance R1 and the first zener diode D3, the first end of the first resistor are connect with the output end of the filter regulator circuit,
Second end is connect with the cathode of the first zener diode D3, the plus earth of the first zener diode D3, and described
The cathode of one zener diode D3 and the cathode of voltage comparator connect.
6. portable type solar energy LED display board as claimed in claim 5, it is characterised in that: the first zener diode D3
The voltage of negative pole end is 4.2V.
7. portable type solar energy LED display board as described in claim 1, it is characterised in that: the sample circuit includes series connection
The other end ground connection of second resistance R5 and first capacitor C5, the first capacitor C5 together, the second resistance R5's is another
The anode of one end and lithium battery connects.
8. portable type solar energy LED display board as described in claim 1, it is characterised in that: the switching circuit includes second
PNP type triode and 3rd resistor R9, the drain electrode of second PNP type triode connect with the output end of the filter regulator circuit
It connecing, the output end connection of grid and voltage comparator, source electrode is connect with the anode of the anode of lithium battery and voltage comparator respectively,
When the voltage of sample circuit acquisition is lower than 4.3V, voltage comparator exports low-voltage, the second PNP triode conducting, to lithium electricity
It charges in pond；When sampling circuit samples voltage is higher than 4.3V, voltage comparator output HIGH voltage, the second PNP triode is cut
Only, it does not charge to lithium battery.
9. portable type solar energy LED display board as described in claim 1, it is characterised in that: the latch uses model
The latch of 74HC573.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821834727.XU CN208922671U (en) | 2018-11-08 | 2018-11-08 | A kind of portable type solar energy LED display board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821834727.XU CN208922671U (en) | 2018-11-08 | 2018-11-08 | A kind of portable type solar energy LED display board |
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| Publication Number | Publication Date |
|---|---|
| CN208922671U true CN208922671U (en) | 2019-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821834727.XU Expired - Fee Related CN208922671U (en) | 2018-11-08 | 2018-11-08 | A kind of portable type solar energy LED display board |
Country Status (1)
| Country | Link |
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| CN (1) | CN208922671U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147588A (en) * | 2018-11-08 | 2019-01-04 | 广东中诚阳能科技有限公司 | A kind of portable type solar energy LED display board |
-
2018
- 2018-11-08 CN CN201821834727.XU patent/CN208922671U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147588A (en) * | 2018-11-08 | 2019-01-04 | 广东中诚阳能科技有限公司 | A kind of portable type solar energy LED display board |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190531 Termination date: 20211108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |