In-depth Demand Report | Disassembling Indoor Led Panel Lights

Our common scenery complementary street light on the city roads, in the rainy day can rely on wind power, when the sun is shining, you can use of photovoltaic power generation, it's really hard to affect the normal use of scenery complementary street light, whether it is a rainy day or sunny day, is the season in summer or in winter snow swirling through, scenery complementary street lamp can work.

The stability of the energy use of scenery complementary street lamps, scenery complementary street lamp factory this is resolved, the annual change of solar energy and diurnal variation is relatively stable, and the change of the wind power is more complex, such as there are white year cycle of the seasons and for day and night change cycle of the solar wind and the wind valley, etc.

And scenery complementary street lamp system is used to get the reasonable collocation of seasonal load and load day and night.

As a result, the efficiency of scenery complementary street lamp can play it system, which reduces the scenery complementary street lamps use price, let people can feel the performance of scenery complementary street lamp is very important and lighting effect, make the energy security of street lamp to protect our living environment.

LED lighting, with its high energy saving, long life, the characteristics of the environmental protection has become the focus of people widely.

High brightness LED light source in recent years because of its manufacturing technology by leaps and bounds, and its production cost and decreasing, now use LED light source as high brightness, high efficiency and energy saving lighting source to save electricity, no carbon has become the world's voracious demand, to create a LED lighting lamps and lanterns is on the rise of new industry, the industrial chain is increasingly perfect, the technology is updated day by day.

Basic working principle

BP2808 BP2808 is specifically to drive the LED light source of constant current control chip.

BP2808 work in continuous current mode step-down system chip of LED light source control through the peak current and ripple current, so as to realize the LED light source of constant average current.

Chips use very few external components to realize constant current control, analog dimming and PWM dimming, and other functions.

System applied voltage range from 12 VDC to 600 VDC, the duty ratio up to 100%;
Suitable for ac 85 v -

Wide input voltage 265 v, is mainly used in the isolation of the LED lamps and lanterns of the power drive system.

BP2808 adopts the patent technology of the source driver and constant current compensation technology, makes constant current drive LED light source, the ac 85 v -
265 v range change is less than + / - 3%.

Combining BP2808 patent technology application circuit of driving system, makes the 18 w LED fluorescent lamp and practical solutions, the ac 85 v -

Within the scope of the 265 v system efficiency is higher than 90%.
In ac 85 v -

265 v input range, BP2808 can drive from 3 w to the 36 w LED light source array, so widely used in E14 / E27 / PAR30 PAR38 / GU10 lamp cup and LED fluorescent lamp, etc.


BP2808 with multiple leds protection function including LED open-circuit protection, LED a short circuit protection, over temperature protection.

Once the system failure occurs, the power system automatic into protection state, until the fault lifted, system to automatically back into the normal working mode.

Reuse DIM pin LED simulation system of the lamps and lanterns that move light, PWM dimming, and the dynamic temperature protection.
BP2808 using SOP8 encapsulation.


the LED fluorescent lamp used typical design
article LED fluorescent lamp, LED light source lamp power drive plan, there are many current unfenced solution because of its high efficiency, small volume, low cost and dominant, and use PWMLED drive controller for the LED fluorescent lamp and the vast majority of drive power supply.

In fact the traditional fluorescent fluorescent lamp are isolation scheme.

to AC176V -

Full voltage 264 v input, for example, mainly BP2808 chip is used to design load for small power of the LED light source series, and the LED fluorescent lamp, the whole design of the system block diagram is shown in figure 1.

The whole circuit by anti surge/lightning protection, EMI filter, full bridge rectifier, passive power factor correction (
PPFC)
, starting voltage (

Including feedforward compensation, boot after feed flow of power supply and drive to soften)

, constant current compensation, PWM control, the source drive, LED light source array, and the sampling resistor, Toff time setting, energy storage inductors, the fly-wheel diode and so on various parts.



the LED light source array design is 0.
06 w white LED (
SMT or straw hat lamp)

24 series, 12 series parallel scheme, drive 288 small power WLED, total power 18 w.

Full voltage 18 w LED fluorescent lamp switch constant-current source circuit design as shown in figure 2, the function of each part as the scarlet letter.

Figure in the resistance to lightning of EMC and EMI filter circuit, power supply is the use of feed flow has been in the inside of the chip rectifier diode.



from AC220V, ac mains inlet with 1 a fuse F1 and anti surge pressure sensitive resistance Vz1 / lightning;

After is the EMI filter, composed of Ld1, Lc1 and Cx1, Cx2;

DB1 is full bridge rectifier, interior is four high voltage silicon diode;

CE1 and CE2, R10 and D2 and D4 passive power factor correction circuit;

BP2808 chips by R15, step-down the R17 R16 starting resistance, C3, feedforward compensation and the Dz1, C2, R18 and internal circuit of patent of BP2808 BP2808 after compensation circuit voltage regulator control circuit with constant current power supply, the system starts due to the small static current control circuit, and the chip within the OUT to VCC feed flow diode can offer BP2808 work power, resistance R15 - at this time

17 on current will be greatly reduced, thus the total system power consumption is greatly reduced, system efficiency is improved obviously.

Patent the source driver circuit consists of MOS tube Q1, D6, Rg, Rt, Rcs and BP2808 internal circuit composition, its distinguishing feature is effectively reduce the power consumption, improve the precision of constant current.

Drive system, the source of drive circuit reduce consumption of system current, especially in the traditional high pressure differential power supply path similar to R15 -

The current on the 17th, which, in turn, reduces the power consumption, improve the efficiency.

D6, Rg can make the switch opening drive soft, shut off the drive to keep strong, both improve EMI, and as far as possible without sacrificing efficiency.

With LED light source parallel output filter capacitor C0 to reduce the current ripple on the LED light source.


BP2808 CS side to collect current sampling resistance Rs1 ~ Rs2 peak current, controlled by the internal logic in a single cycle OUT feet signal pulse duty ratio of constant current control, constant current output and D5, LM1 fly-wheel circuit merge to LED light source, constant current power supply.

LED light source array combination changes, the resistance of Rs1 ~ Rs2 resistance also want to change, make the output current of the circuit to meet the requirements of the LED light source array combination.


PCB arrangement is the key to getting the product, so the PCB to get the line to design according to the requirements of power electronic safety codes.

This circuit can be universal in T10, T8 fluorescent tubes, because of two different pipe size, the width of the two pieces of PCB will be different, to reduce the height of all parts, so that in the T10, T8 tubes.

Figure 3 is T10 constant-current source board pictures, 30 component installation 0.
8 mm thick epoxy single-sided PCB.



so AC85V - design
-

Full voltage 264 v input, but also want to consider PFC, LED light source array can be designed to be 0.

06 w white LED 12 series, 24 series parallel scheme.

BP2808 do LED fluorescent lamp power supply drive power supply design, suggested that the output voltage

When solar street light led the choose and buy back, it is found that such a street lamp before installation, need to know the specific installation steps, in order to better to install.

What is the solar street light led step by the chapter?

Will tell everyone about a simple below:
a, first need to field investigation of the road, so as to better for solar street light point, still need to put the tag is best, in order to better late for construction work.

Organizers and machinery to embedded light pole pit construction, at this point, the operator is the need to guarantee safety.



2, when come into the light pole of embedded parts, require placing of concrete, and the embedded parts are mostly made up of a steel welding, will play the role of a fixed light pole.

After wait for embedded parts are fixed with concrete, at this time, you need to prepare light pole lifting problem.

Light pole, before lifting the ground is need to put some panels, lamps, light pole, panels, lamp arm go line, all of you need to install in place.


3, everything is installed, check there are no mistakes, do light pole can use crane hoisting.

Then, once a hoisting need lights to test.

The light test completed, we have to give is the light pole.

If the need for secondary embedded, don't need to do surface treatment, there should be ground exposed bolt, you need to use the cement to cover.


the above steps are completed all the installation work, to ensure that when installed, can have very good effect.

After all, solar street light led installation is more complex, need to do each step, more smoothly to ensure the lamp installation, think you to provide more convenient.


the will tell you about the installation of solar street light led step, is to want to help people better to use and install the lamps and lanterns, guarantee when use, the lamps and lanterns can have very good effect, especially to those who pass by to provide more convenient, not in the walk, can't see the road ahead.

Solar panels on the location of the hot spots and invisible tape location are prone to the back bulge, and when the two overlap more prone to the back bulge, mainly because the panel temperature caused by too much angry words.

The sun in the solar panels in the use of the


solar panels on the hot spot and the location of the invisible tape is easy to make the back bulge if two overlap, backplane uplift the possibility of larger, mainly because of the temperature of the panels are too high.

When used solar panels, solar panels absorb part of the sun itself will be converted into heat energy, caused the temperature of panels internal components to soar.

Uv absorber of EVA will absorb ultraviolet light is converted into heat energy, and spread the inside parts.

In general, the normal work of the solar energy battery components temperature about 70 ℃
80℃。

Many experiments prove that hotan employees on new energy, the rise of temperature will affect the power output of solar panels.

Rising the temperature of the module itself every 1 ℃, module about 1 W output power will be reduced.

Therefore, should be considered in the process of back material choice back material coefficient of thermal conductivity.

Coefficient of thermal conductivity and the materials and components on the basis of the backboard itself.
Heat is mainly composed of transmission medium.

In this case, the hotan new energy will explain the solution: solar panels bulge when cell in operation, to ensure that the input cell and qualified for the standard battery.
In the process of welding, such as welding, virtual welding.

Should be avoided and should be laid paste invisible tape according to the drawing.

In recent years, with the continuous improvement of people's awareness of environmental protection, more and more cities pay more attention to the choice of smart street lights when they are choosing street lights. So what are the characteristics of smart street lights that have attracted so many companies to purchase?
For smart street lights, its very important feature is that it can play a very good energy-saving effect. Compared with traditional street lights, its energy-saving effect is very good. For cities, this can also save a lot of other resources.
Secondly, there is another feature of smart street lights, which can play a very good role in beautifying the city. This is mainly because there are many types of street lights, so when choosing urban facilities Hou can also make better decorations according to the overall style of the city, which has a very good role in promoting the development of the city.
In addition, in addition to the above features, smart street lights have one of the biggest advantages, that is, their smart street lights. Compared with ordinary street lights, the brightness can be adjusted according to the actual situation. Yes, in this way, a lot of manual inspection costs can be saved. At the same time, repair and maintenance work is very convenient.

It is precisely because of the continuous improvement of smart street lamp production technology, its technical level is also constantly improving, in this way, the safety and stability of the product has also been well improved, which can meet the needs of more and more people Up. Especially when making a choice, you can also customize it according to your actual needs.