CN217789632U

CN217789632U - Intelligent photovoltaic junction box utilizing photovoltaic cable for communication

Info

Publication number: CN217789632U
Application number: CN202221825407.4U
Authority: CN
Inventors: 宋睿; 于继铭
Original assignee: Xia Neng Technology Beijing Co ltd
Current assignee: Xia Neng Technology Beijing Co ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-11-11
Anticipated expiration: 2032-07-15

Abstract

The utility model discloses an utilize intelligent photovoltaic terminal box of photovoltaic cable communication, including intelligent terminal box and pulse receiver, the intelligent terminal box includes that voltage is relatively with select switch module, circuit breaker module, pulse emission module, filtering module and pulse receiving module, pulse receiver includes that the pulse accepts module, alarm module, data display module. This simplify intelligent terminal box structure need not extra communication cable, realizes the location to the photovoltaic module who goes wrong under the condition that does not increase photovoltaic system wiring, reduces the cost of intelligent terminal box, simplifies intelligent terminal box structure, need not extra communication cable, realizes the location to the photovoltaic module who goes wrong under the condition that does not increase photovoltaic system wiring, reduces the cost of intelligent terminal box.

Description

Intelligent photovoltaic junction box utilizing photovoltaic cable for communication

Technical Field

The utility model relates to a photovoltaic terminal box field specifically is an utilize intelligent photovoltaic terminal box of photovoltaic cable communication.

Background

The photovoltaic junction box is a connector between a photovoltaic cell array formed by photovoltaic cell components and a photovoltaic charging control device, and provides a combined connection scheme of a photovoltaic cell panel for users. The intelligent junction box is a product integrating intelligent control into the solar energy industry in the leading edge technology of solar energy, the existing intelligent junction box is generally realized by adding an intelligent chip circuit on the basis of a common junction box, chinese patent document CN112422078A (application number: 202011303031.6) discloses a junction box and a connector with high-temperature automatic turn-off function for a photovoltaic component, the temperature in the photovoltaic junction box and the temperature of the connected connector are measured in real time, the temperature is compared with a set temperature threshold value, and the photovoltaic junction box or the photovoltaic connector is automatically turned off or turned on to be electrically connected through a control switch; two temperature thresholds of a turn-off temperature and a reset temperature are set in the device; when the real-time measured temperature reaches a turn-off temperature threshold value, the control switch automatically turns off the electrical connection; when the real-time measured temperature value reaches the reset temperature threshold value, the control switch automatically restores the electrical connection; the device in the junction box and the device in the connector are two sets of devices which work independently; after the control switch automatically turns off the electrical connection, a continuous heating source caused by direct current arc in the photovoltaic module or increased contact resistance between metal pieces or high temperature generated by exceeding rated current in a circuit is eliminated, and the junction box or the connector is actively prevented from being burnt due to high temperature and overload current. The photovoltaic junction box automatically realizes control and turn-off through temperature measurement and comparison. The existing intelligent junction box is complex in structure, and needs to be additionally connected with a communication line due to the fact that extra communication requirements exist, so that photovoltaic installation wiring becomes more complex, most of the existing intelligent junction boxes are expensive in cost, and therefore the intelligent photovoltaic junction box utilizing photovoltaic cable communication is provided.

Disclosure of Invention

The utility model aims at prior art's defect, provide an utilize photovoltaic cable communication's intelligent photovoltaic terminal box to solve the problem that above-mentioned background art provided.

In order to achieve the above purpose, the utility model provides a following technical scheme: the intelligent photovoltaic junction box comprises an intelligent junction box and a pulse receiver, wherein the intelligent junction box comprises a voltage comparison and selection switch module, a circuit breaker module, a pulse transmitting module, a filtering module and a pulse receiving module, and the pulse receiver comprises a pulse receiving module, an alarm module and a data display module.

As a preferred technical solution of the present invention, the output terminal of the disconnection switch module is connected to the input terminal of the selection switch module in comparison with the voltage;

as a preferred technical scheme of the utility model, the output of voltage ratio and selection switch module links to each other with the input of pulse emission module.

As a preferred technical scheme of the utility model, the output of pulse receiving module links to each other with filtering module and pulse emission module's input.

As a preferred technical scheme of the utility model, the output of filtering module links to each other with pulse emission module's input.

The utility model has the advantages that: this simplify intelligent terminal box structure need not extra communication cable, realizes the location to the photovoltaic module who goes wrong under the condition that does not increase photovoltaic system wiring, reduces the cost of intelligent terminal box, simplifies intelligent terminal box structure, need not extra communication cable, realizes the location to the photovoltaic module who goes wrong under the condition that does not increase photovoltaic system wiring, reduces the cost of intelligent terminal box.

Drawings

Fig. 1 is a schematic structural view of the intelligent junction box of the present invention;

fig. 2 is a schematic structural diagram of the pulse receiver of the present invention;

fig. 3 is a logic diagram of the intelligent junction box of the present invention.

In the figure: the intelligent terminal box comprises an intelligent terminal box 1, a comparison and selection switch module 11, a circuit breaker module 12, a pulse transmitting module 13, a filtering module 14 and a pulse receiving module 15;

the device comprises a pulse receiver 2, a pulse receiving module 21, an alarm module 22 and a data display module 23.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined.

Example (b): referring to fig. 1-3, the present invention provides a technical solution: an intelligent photovoltaic junction box utilizing photovoltaic cables to communicate comprises an intelligent junction box 1 and a pulse receiver 2, wherein the intelligent junction box 1 comprises a voltage comparison and selection switch module 11, a circuit breaker module 12, a pulse transmitting module 13, a filtering module 14 and a pulse receiving module 15, and the pulse receiver 2 comprises a pulse receiving module 21, an alarm module 22 and a data display module 23.

The output end of the circuit breaker module 12 is connected with the input end of the voltage comparison and selection switch module 11;

the output end of the voltage comparison and selection switch module 11 is connected with the input end of the pulse transmitting module 13.

The output end of the pulse receiving module 15 is connected with the input ends of the filtering module 14 and the pulse transmitting module 13.

The output end of the filtering module 14 is connected with the input end of the pulse transmitting module 13.

The working principle is as follows: an intelligent photovoltaic junction box utilizing photovoltaic cable communication comprises an intelligent junction box 1, a voltage comparison and selection switch module 11, a circuit breaker module 12, a pulse transmitting module 13, a filtering module 14 and a pulse receiving module 15; the device comprises a pulse receiver 2, a pulse receiving module 21, an alarm module 22 and a data display module 23; the intelligent junction box firstly compares voltage, current and temperature through a comparator, and if the data is not in a set range, a pulse signal is emitted outwards through a photovoltaic cable; the pulse receiving module 15 receives n pulse signals transmitted from the previous component, eliminates the pulse signals through the filtering module 14, and transmits n +1 pulse signals to the next component through the pulse transmitting module; the circuit breaking switch module 12 comprises a switch matrix, and a power supply channel is selected through the switch matrix to control circuit breaking and short-circuit operation so as to switch the solar module; and finally, the pulse signals are transmitted to a pulse receiver 2 arranged in front of the inverter along the photovoltaic cable, the pulse receiver 2 collects the pulse signals and uploads the pulse signals to an alarm module, and the number of the received pulse signals is displayed through a data display module, so that the problem of the number of the components is displayed.

Example (c): when a problem occurs in the 5 th component in a string of photovoltaic components, the 5 th component sends 1 pulse signal to the 4 th component, the 4 th component receives the signal, eliminates the signal through filtering, and sends two pulse signals to the 3 rd component \8230 \ 8230, the 1 st component receives 4 signals in total, the signals are eliminated through filtering, then 5 pulse signals are sent out, and finally, a pulse receiver receives the 5 pulse signals, displays the number 5 and uploads the 5 pulse signals to an alarm system.

This simplify intelligent terminal box structure need not extra communication cable, realizes the location to the photovoltaic module that goes wrong under the condition that does not increase photovoltaic system wiring, reduces the cost of intelligent terminal box, simplifies intelligent terminal box structure, need not extra communication cable, realizes the location to the photovoltaic module that goes wrong under the condition that does not increase photovoltaic system wiring, reduces the cost of intelligent terminal box.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention.

Claims

1. An intelligent photovoltaic junction box using photovoltaic cable communication, comprising an intelligent junction box (1) and a pulse receiver (2), characterized in that: the intelligent junction box (1) comprises a voltage comparison and selection switch module (11), a circuit breaking switch module (12), a pulse transmitting module (13), a filtering module (14) and a pulse receiving module (15), and the pulse receiver (2) comprises a pulse receiving module (21), an alarm module (22) and a data display module (23).

2. The intelligent photovoltaic junction box communicating by means of photovoltaic cables as claimed in claim 1, wherein: the output end of the circuit breaking switch module (12) is connected with the input end of the voltage comparison and selection switch module (11).

3. The intelligent photovoltaic junction box communicating by means of photovoltaic cables as claimed in claim 1, wherein: the output end of the voltage comparison and selection switch module (11) is connected with the input end of the pulse transmitting module (13).

4. The intelligent photovoltaic junction box communicating by means of photovoltaic cables as claimed in claim 1, wherein: the output end of the pulse receiving module (15) is connected with the input ends of the filtering module (14) and the pulse transmitting module (13).

5. The intelligent photovoltaic junction box communicating by means of photovoltaic cables as claimed in claim 1, wherein: the output end of the filtering module (14) is connected with the input end of the pulse transmitting module (13).