Household indoor solar lamp lighting

Solar lamps are used for indoor lighting in many places in life, which not only saves electricity, but also is safe and environmentally friendly. So now some friends will install household solar lamps in their own yards and share indoor solar lamp lighting.

Domestic indoor solar lamp lighting 1 1. Which is better for household solar lamps?

1, solar lamp has two structures, one is split and the other is integrated. Split type is that the solar panel and the lamp holder are separated by a line. The advantage of this structure is that the solar panel can be installed at any position at will, and the battery can be charged more effectively by sunlight. However, it is best for the solar panels to face south, so that the light will last longer and the lighting will last longer.

2. The integrated type has no such function. The solar panel is located where the lamp is installed, and only the angle can be adjusted, but the orientation cannot be changed. It may be sunny only one morning or one afternoon a day, which leads many people to report that the lighting time at night is very short.

Second, how to buy solar lights?

1, composition of solar lamp

Lamp panel (including lamp beads and aluminum substrate), solar panel (including polysilicon and monocrystalline silicon), lithium battery (including lithium iron and ternary) and controller.

2, using power calculation

Rainy day lighting power, lighting time, battery life.

If a 30W lamp is used, the lighting time is 8 hours per day, and the power consumption is 30W*8H=240W (the power consumption for lighting for 8 hours per day is 30W).

The next step is to obtain the capacity requirements of the battery pack that should be configured. Generally, 3.2V lithium-iron single string /3.7V ternary single string battery pack is used under 20W, and 9.6V (lithium-iron 3 string)/12.8V (lithium-iron 4 string)/1.1v (ternary triple string) is used under 20w. We use 3 yuan 1 1. 1V lithium battery pack to calculate: 240w/11v = 21.62a It is recommended to take even integer values, and/kloc-0 is required.

When the battery capacity comes out, calculate the power generation. Photovoltaic panels are generally 18V or less 120W or more and 36V. Watch the voltage. Generally, the average daily sunshine time is 3 to 5 hours (sufficient sunshine at noon and weak sunshine in the morning and afternoon). This can be found in Baidu, the local average sunshine time.

Three. Frequently asked questions about solar lamps

1. If the battery is bigger, will the lighting time be longer?

The actual power generation can't keep up, and the battery will not last long. Lithium batteries and solar panels should be connected to adjust the parameters. Simply adjust 1 parameters are all edge balls.

2. If there are more beads, will it be brighter than if there are fewer beads?

No, brightness is related to power and light efficiency.

3. Is lithium-ion battery better than ternary lithium battery?

Theoretically, they all have a cycle life, but in fact, most lithium-iron batteries used in the lighting industry are old batteries.

How to install solar lights in indoor solar lighting 2?

Firstly, install the battery panel, and determine the inclination of the battery panel according to the ground conditions, so that it can be fully refracted by the sun; Then install the fixing bracket of the lamp, and install the battery panel on the bracket; Then bury the storage battery underground, connect the controller and the electromagnetic wire, install the photovoltaic panel, and put the controller into the lamp post; Finally, lay the wires and test whether they can be used.

Matters needing attention in the use of LED solar lamp

1, the working voltage of LED is 0. 1V, and the working current can change around 20mA. For safety reasons, series current limiting resistors are generally used, which leads to huge energy loss. Lawn lights are best not to be used, and the brightness of LED will change according to the working voltage. This is a good way to use a boost circuit or a simple constant current circuit. In short, the current should be automatically limited, otherwise the LED will be damaged.

2. Generally, the peak current of LED is 50 100mA, and the reverse voltage is about 6V. Especially when the solar cell is reversely connected or discharged, please be careful not to exceed this limit. If the boost circuit is too high, it may exceed this limit and the LED may be damaged.

3. The temperature characteristics of 3.LED are not good. When the temperature rises by 5, the luminous flux drops by 3. Be careful when using it in summer.

4. The working voltage is very discontinuous, and the working voltages of LEDs of the same model and batch are different to some extent, so it is not suitable for parallel use, and it must be used in parallel, and the current must be considered.

5. Static electricity will have a great influence on ultra-bright white LED. Anti-static function is provided during installation, and the operator should wear anti-static wrist. Sometimes you may not see the ultra-bright white LED damaged by static electricity, but it will shorten its life.