With the popularity of broadband in the community, to the users with a great degree of convenience, but at the same time encountered other problems, such as the connection of the user into the line in the community, if the connection is improper, then it may affect the stability of the use of the product, so how to install the junction box has become a very important problem.Those who are engaged in electrician may be familiar with what a junction box is, but do you know the function of the junction box?Today Xiaobian will give you a popular science.
1. Structure of junction box
The general junction box is composed of a box cover, a box body, a terminal, a diode, a connecting line and a connector.
Function of each part of the junction box
The shell should have strong anti-aging and ultraviolet resistance;In line with the use requirements of outdoor harsh environment conditions;
The self-locking function makes the connection more convenient and firm;Must have waterproof seal design, scientific anti-electric shock insulation protection, with better safety performance;Wiring terminals should be firmly installed with good weldability with the confluence.
Diodes are divided into: bypass diode and anti - recoil diode.The main function of the diode is the single - pass function.
Bypass diode: its main function is to prevent the hot spot effect of the component.Hot spot effect: When a portion of the cell is blocked by a foreign body while the module is in use, it will be used as a load to consume the energy generated by other solar cell modules that are illuminated.The shaded solar cell gets hotter and hotter and hotter and hotter, and that's called the hot spot effect.If a foreign body blocks the battery, the local battery does not work, and the temperature of the local battery keeps rising and heating will eventually lead to the battery burning out.
When the solar panel is working normally, the bypass diode will not work, but when the hot spot effect is encountered, the bypass diode will automatically cross the battery string and connect with other battery strings to continue to work.The main purpose of the bypass diodes we use today is to prevent the battery from burning up.
Anti-recoil diode: assembly that prevents battery current from flowing back when there is no light.
Connector, connector wire: with good insulation performance, male and female plug with self-locking function is more convenient and reliable solar panels and electrical connection.
The function of junction box: 1. Enhance the safety performance of the component 2. Seal the current output part of the component (lead part)3.Make the use of components more convenient and reliable.
