CN201467019U - Quick-plug waterproof array combiner box - Google Patents

Abstract

The utility model relates to a quick plug-in waterproof array combiner box, which is composed of a box body and a control circuit in the box body, wherein the control circuit is composed of positive and negative bus bars, positive and negative terminal blocks, circuit breakers, lightning protection devices, Composed of kickback diodes, the connectors of solar modules are connected in series to form strings, and the positive and negative poles of multiple strings are connected in parallel to the positive and negative terminal rows to achieve parallel confluence, and then connected to the positive and negative busbars. An anti-recoil diode is connected in series on the positive side of the string. The combiner box is connected in array form, which is very convenient to operate, saves time and reduces labor; lightning protection devices are installed in the array, which greatly improves safety; the installed anti-recoil diodes can effectively improve system performance; plug-in type The wiring method is very convenient for future array maintenance and repair.

Description

Quick-plug waterproof array combiner box

technical field

The utility model belongs to the technical field of photovoltaic power generation applications, in particular to a quick-insert waterproof array combiner box.

Background technique

Traditional energy is decreasing day by day, and the harm to the environment is becoming more and more prominent. During this period, the world is turning its attention to renewable energy. Among renewable energy, solar energy has become the focus of people's attention due to its unique advantages. A solar power station is a major way of utilizing solar energy. A solar power station mainly connects several solar modules in series and parallel to form a certain array, and then connects the array with a controller (independent system including storage battery) or an inverter (grid-connected system) When there is sunlight, the solar cell can generate electricity to charge the battery, or convert the direct current to alternating current through the inverter, and then connect it to the grid.

In this process, the wiring of solar modules is cumbersome and complicated. The existing main way is to use pvc pipe to thread, and add a waterproof junction box at the joint. This process is cumbersome to operate and relatively low in safety. First of all, the anti-recoil diodes between the arrays cannot be installed; secondly, the lightning protection of the arrays cannot be installed, and the safety is low; thirdly, there are too many connectors, leaving potential safety hazards.

In addition, if it is a large-scale solar power station, the wiring will be very complicated, which will increase a lot of labor and be prone to errors.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a fast plug-in waterproof array combiner box with fast wiring and simple operation.

The utility model solves its technical problem and realizes by taking the following technical solutions:

A quick plug-in waterproof array combiner box, which is composed of a box body and a control circuit inside the box, wherein the control circuit is composed of positive and negative bus bars, positive and negative terminal blocks, circuit breakers, lightning protection devices, and anti-recoil diodes , the connectors of solar modules are connected in series to form strings. The positive and negative poles of multiple strings are respectively connected in parallel to the positive and negative terminal rows to achieve parallel confluence, and then connected to the positive and negative busbars. The positive side of each string An anti-recoil diode is connected in series.

Moreover, the positive and negative busbars are connected to a circuit breaker, and a lightning protection device is connected in parallel on the circuit of the circuit breaker.

Advantage and positive effect of the present utility model are:

1. The combiner box adopts array wiring, which is very convenient to operate, saves time and reduces labor.

2. A lightning protection device is installed in the array of the combiner box, which greatly improves the safety.

3. Anti-recoil diodes are installed in the combiner box, which improves the system performance.

4. The combiner box is a plug-in type wiring, which is very convenient for array maintenance and repair in the future.

5. The connection of this combiner box is neat and beautiful.

Description of drawings

Fig. 1 is the array wiring schematic diagram of the utility model solar module;

Fig. 2 is the circuit principle diagram of the present utility model;

Fig. 3 is a schematic diagram of the physical connection of the present invention.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the utility model.

A quick plug-in waterproof array combiner box is composed of a box body 3 and a control circuit inside the box body. The control circuit is composed of positive and negative bus bars 6, positive and negative terminal blocks 7, circuit breaker 4 (K), lightning protection device 5 (B), and anti-recoil diode D. The connector 2 of the solar module 1 is in series Form a group string, and the group string can be multiple and form an array. The figure of this embodiment shows an array of eight group strings; To the positive and negative busbars; each positive side of the string is connected in series with an anti-kickback diode D, which can effectively prevent reverse charging between each string array due to voltage inconsistency, or the grid side The current backcharged to the solar array can also prevent the hot spot effect caused by shadow shading.

The positive and negative bus bars can be connected to the inverter or controller through the circuit breaker K, and the lightning protection device B is connected in parallel on the circuit of the circuit breaker to improve safety.

The working principle of the utility model is:

Connect solar modules in series to form strings. In series, you can use the connectors between solar modules and modules to connect, and then connect in parallel; when connecting in parallel, you can use a combiner box to perform parallel confluence, and then connect to the inverter or controller; use terminal blocks Conduct wiring, use copper plates for confluence, and connect anti-recoil diodes in series on the positive side of each road to prevent reverse charging between each series array due to voltage inconsistency, or reverse charging of the current on the grid side to the solar array, and prevent the formation of shadows hot spot effect. When wiring, we connect the wire connector directly to the terminal block of the combiner box, and then connect the wire connector of the array to the wire connector of the combiner box.

Claims (2)

1. a speed is inserted formula waterproof array header box, constitute by the control circuit in casing and the casing, it is characterized in that: control circuit is made of both positive and negative polarity bus-bar, both positive and negative polarity connecting terminal block and circuit breaker, lightning protection device, anti-recoil diode, the electric wire connecting junction of solar components is a series connection form formation group string, be connected in parallel respectively anode and cathode terminals row of the both positive and negative polarity of a plurality of groups of strings realizes that parallel connection confluxes, be connected on the both positive and negative polarity bus-bar side of the positive electrode of each the group string anti-recoil diode of all connecting then.

2. speed according to claim 1 is inserted formula waterproof array header box, and it is characterized in that: the both positive and negative polarity bus-bar connects a circuit breaker, is parallel with lightning protection device on the circuit of circuit breaker.

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