Working principle of solar photovoltaic junction box
Solar photovoltaic junction box is a connector between the solar cell array composed of solar cell modules and the solar charging control device. It is a cross-field comprehensive design integrating electrical design, mechanical design and material science. Solar cell module junction box is very important in the composition of solar module, the main function is to connect the solar cell generated electricity to the external line. The junction box is glued to the backplane of the component by silicone gel. The outgoing cables in the component are connected to the internal cables in the junction box, and the internal cables are connected to the external cables to enable the component to connect to the external cables. There are diodes in the junction box to ensure that the components can work properly when the light is blocked.
The solar junction box can generate an electric current under a certain level of light, which can be used by connecting electrical appliances. The premise is that the current generated per unit time is greater than the consumption of the appliance. In practical application, this kind of direct use situation is relatively few. It’s usually used as a whole system.
Types of solar photovoltaic junction boxes
At present, the common solar junction box mainly consists of single crystal, polycrystal and amorphous materials. Among them, single crystal is the best, high efficiency, high price; The polycrystalline efficiency is 2% lower, the price is similar, and the life span of these two is more than 25 years; Amorphous low efficiency, short life, but cheap. From the cost-effective point of view, or the highest single crystal.
The main functional characteristics of solar photovoltaic junction box
The power of the solar photovoltaic junction box was tested under standard conditions: temperature 25 degrees, AM1.5, 1000W/M2. It’s usually denoted by WP, but it can also be denoted by W. The power tested under this standard is called nominal power.
1. The shell is made of imported advanced raw materials, with extremely high anti-aging and UV resistance;
2. It is suitable for outdoor use under harsh environmental conditions, and the actual use is more than 25 years.
3. 2 to 6 wiring terminals can be built in as required.
4. All connection modes adopt quick-connect plug-in mode.
Post time: Mar-08-2023