Intelligent combiner box with temperature and humidity control system

Abstract

The utility model discloses an intelligent combiner box with a temperature and humidity control system, which solves the problem that the conventional intelligent combiner box has no functions of temperature and humidity control, fire prevention, automatic protection and the like. According to the technical scheme, the device comprises a box body, and a confluence incoming line circuit breaker, a confluence outgoing line main circuit breaker, a smoke probe, a temperature and humidity control system and an electric manual operation device which are arranged in the box body, wherein the temperature and humidity control system comprises a temperature probe, a humidity sensing module, a fan and a heater; the temperature probe and the humidity sensing module are respectively used for detecting the temperature and the humidity in the box body, the fan works independently to reduce the temperature in the box body or works in cooperation with the heater to reduce the humidity in the box body, the smoke probe is used for detecting the smoke concentration in the box body, and the electric manual operation device is provided with a motor and a driving part driven by the motor. And the driving piece is used for driving a handle of the bus outlet main circuit breaker to act.

Description

[Technical Field]

[0001] This utility model belongs to the field of photovoltaic technology, specifically relating to combiner boxes. [Background Technology]

[0002] With the booming development of the photovoltaic industry and various new energy power station types, the application of combiner boxes is becoming increasingly widespread. In a photovoltaic power generation system, the combiner box is a wiring device that ensures the orderly connection of photovoltaic inverters and the current collection function. This device ensures that the photovoltaic system can easily disconnect the circuit during maintenance and inspection, minimizes the scope of power outages when a photovoltaic system malfunctions, and ensures that photovoltaic power generation is not affected by individual line problems. Currently, most combiner boxes on the market only have the functions of current collection and lightning protection. The various branches are collected by circuit breakers, and then output is completed by larger circuit breakers and cables. However, the status of the internal equipment and the safety performance of the combiner box itself are not monitored or protected by corresponding mechanisms. This requires adding more equipment and cables to analyze data from each combiner front-end inverter or other branch equipment, which is difficult to construct, and the equipment, materials, and construction costs are relatively high. Furthermore, there is a drawback: signal loss can easily lead to difficulties in subsequent operation and maintenance. At the same time, existing combiner boxes on the market have almost no self-protection functions, lacking features such as temperature and humidity control, fire prevention, theft prevention, and automatic protection. [Utility Model Content]

[0003] To address the shortcomings of existing technologies, the present invention aims to provide an intelligent combiner box with a temperature and humidity control system, thereby resolving the deficiencies in existing intelligent combiner boxes regarding functions such as temperature and humidity control, fire prevention, and automatic protection.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A smart combiner box with a temperature and humidity control system includes a box body and a combiner incoming line circuit breaker, a combiner outgoing line main circuit breaker, a smoke detector, a temperature and humidity control system, and an electric manual operating device disposed within the box body. The temperature and humidity control system includes a temperature probe, a humidity sensing module, a fan, and a heater. The combiner incoming line circuit breaker is connected to an inverter, and the combiner outgoing line main circuit breaker is connected to the low-voltage side of a transformer. The temperature probe and humidity sensing module are used to detect the internal temperature and humidity of the box body, respectively. The fan works independently to reduce the internal temperature of the box body or works in conjunction with the heater to reduce the internal humidity of the box body. The smoke detector is used to detect the smoke concentration inside the box body. The electric manual operating device is equipped with a motor and a drive component driven by the motor. The drive component is used to drive the handle of the combiner outgoing line main circuit breaker.

[0006] When the temperature inside the enclosure reaches the set upper limit, and / or when the smoke concentration inside the enclosure reaches the set upper limit, the fan starts to exhaust smoke, and the electric manual operating device drives the handle of the main circuit breaker of the busbar to open and disconnect the power supply.

[0007] Preferably, the temperature and humidity control system further includes a temperature and humidity controller connected to the temperature probe and humidity sensing module, which controls the fan and heater based on the temperature and humidity information inside the chamber.

[0008] Preferably, the intelligent junction box further includes a contactor module disposed inside the box. The contactor module is connected to a temperature and humidity controller, a fan, a heater, and an electric manual control device. The contactor module controls the fan, heater, and electric manual control device based on the detection information from the temperature probe, humidity sensor module, and smoke probe.

[0009] Preferably, the incoming bus circuit breaker and the outgoing bus circuit breaker are arranged side by side in the upper part of the enclosure, the fan is located on the upper side wall of the enclosure, and the heater is located near the fan.

[0010] Preferably, the enclosure is also equipped with a surge protector connected to the contactor module.

[0011] Preferably, the enclosure is further provided with a door status switch for detecting the door status and an audible and visual alarm connected to the door status switch.

[0012] Preferably, the enclosure is equipped with a lighting system.

[0013] Preferably, the enclosure is also equipped with a current transformer to detect the current and voltage information of the bus line.

[0014] Preferably, the enclosure is equipped with a grounding busbar, which is connected to a grounding wire.

[0015] The technical solution adopted in this utility model has the following beneficial effects:

[0016] Compared to existing intelligent combiner boxes, this device is equipped with a smoke detector, a temperature and humidity control system, and an electric manual operating device. The temperature and humidity control system uses a temperature probe and a humidity sensor module to detect the internal temperature and humidity of the box, respectively. A fan operates independently to lower the internal temperature or works in conjunction with a heater to lower the internal humidity. The smoke detector detects the smoke concentration inside the box. The electric manual operating device includes a motor and a drive mechanism that drives the handle of the main circuit breaker for the combiner line. This enhances the sensing capabilities for temperature, humidity, and smoke data within the combiner box, while the electric manual operating device automatically controls the circuit breaker's opening and closing for appropriate protection measures.

[0017] If the temperature is too high, the temperature and humidity control system will trigger a relay to connect the relevant circuits, and the cabinet fan will automatically start to cool down. If the humidity is too high, the temperature and humidity control system will trigger a relay to connect the relevant circuits, and the heater will automatically reduce the humidity. If the temperature inside the cabinet reaches the set upper limit or the smoke concentration inside the cabinet reaches the set upper limit, the relay will be triggered, the fan will start to exhaust smoke, and the electric manual operating device will drive the handle of the main circuit breaker of the busbar to open and cut off the power. After the fault is restored, the main circuit breaker of the busbar can be closed by the electric manual operating device.

[0018] In addition, the enclosure is equipped with a door status switch for detecting the door status and an audible and visual alarm connected to the door status switch. If the enclosure door is opened during operation, the audible and visual alarm will be triggered by the door status switch to provide a warning. At the same time, the internal lighting system can also be turned on to provide maintenance lighting.

[0019] Furthermore, some components and functions of existing intelligent combiner boxes are retained, such as surge protectors, transformers, and grounding bars.

[0020] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0021] The utility model will be further described below with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of an intelligent combiner box with a temperature and humidity control system according to the present invention;

[0023] Figure 2 This is a schematic diagram of an intelligent combiner box with a temperature and humidity control system according to the present invention;

[0024] Attached reference numerals: 1-Enclosure, 2-Incoming bus circuit breaker, 3-Outgoing bus main circuit breaker, 4-Electric manual control device, 5-Temperature and humidity controller, 6-Contactor module, 7-Instrument transformer, 8-Fan, 9-Grounding busbar, 10-Humidity sensing module, 11-Door status switch, 12-Smoke detector, 13-Temperature probe, 14-Heater, 15-Surge protector, 16-Audible and visual alarm, 17-Door.

Detailed Implementation Methods

[0025] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0026] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0027] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "inner," and "outer," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Reference Figure 1 and Figure 2As shown, this embodiment provides an intelligent combiner box with a temperature and humidity control system, including a box body 1 and a combiner incoming line circuit breaker 2, a combiner outgoing line main circuit breaker 3, a smoke detector 12, a temperature and humidity control system, and an electric manual operating device 4, all installed inside the box body. The box body 1 is connected to a box door 17.

[0032] The temperature and humidity control system includes a temperature probe 13, a humidity sensing module 10, a fan 8, and a heater 14. The incoming busbar circuit breaker 2 is connected to the inverter outside the enclosure, and the outgoing busbar circuit breaker 3 is connected to the low-voltage side of the transformer. The temperature probe 13 and humidity sensing module 10 are used to detect the internal temperature and humidity of the enclosure, respectively. The fan 8 works alone to reduce the internal temperature or works in conjunction with the heater 14 to reduce the internal humidity. The smoke probe 12 is used to detect the smoke concentration inside the enclosure. The electric manual control device 4 has a motor and a drive component driven by the motor. The drive component is used to drive the handle of the outgoing busbar circuit breaker. This simulates the action of a human hand on the handle of the outgoing busbar circuit breaker. For example, the drive component can use a cam-linkage mechanism, where the motor drives the cam, the cam drives the linkage, and the linkage drives the handle of the outgoing busbar circuit breaker.

[0033] When the temperature inside the enclosure reaches the set over-temperature limit, the electric manual control device activates the handle of the main circuit breaker, causing it to trip and disconnect the power supply. Alternatively, when the smoke detector detects that the smoke concentration inside the enclosure exceeds the set limit, the fan starts to exhaust smoke, and the electric manual control device activates the handle of the main circuit breaker, causing it to trip and disconnect the power supply. Of course, if both the temperature inside the enclosure reaches the set over-temperature limit and the smoke detector detects that the smoke concentration inside the enclosure exceeds the set limit, the fan will also start to exhaust smoke, and the electric manual control device will activate the handle of the main circuit breaker, causing it to trip and disconnect the power supply.

[0034] Furthermore, the temperature and humidity control system also includes a temperature and humidity controller 5 connected to the temperature probe 13 and the humidity sensing module 10. The temperature and humidity controller 5 controls the fan 8 and the heater 14 based on the temperature and humidity information inside the box. The intelligent junction box also includes a contactor module 6 located inside the box. The contactor module 6 is connected to the temperature and humidity controller 5, the fan 8, the heater 14, and the electric manual control device 4. The contactor module 6 has a first control module, a second control module, and a third control module that control the fan, the heater, and the electric manual control device respectively. The contactor module 6 controls the fan, the heater, and the electric manual control device based on the detection information from the temperature probe, the humidity sensing module, and the smoke probe.

[0035] Specifically, the incoming bus circuit breaker 2 and the outgoing bus circuit breaker 3 are arranged side by side in the upper part of the enclosure. The fan 8 is located on the upper side wall of the enclosure, and the heater 14 is located near the fan. The air blown out by the fan is heated by the heater, and the hot air circulates inside the enclosure, reducing the humidity inside. If the heater is not working, the fan alone can cool the inside of the enclosure.

[0036] Furthermore, some components and functions of existing intelligent combiner boxes are retained. The box 1 also houses a surge protector 15 connected to the contactor module 6. The box 1 also includes a door status switch 11 for detecting the door's status and an audible and visual alarm 16 connected to the door status switch. After the equipment is put into operation, if the combiner box door is accidentally opened, the door status switch 11 will activate the audible and visual alarm 16 to issue an audible and visual warning, and simultaneously activate the internal lighting system to provide maintenance lighting. Maintenance personnel can check the status, perform maintenance, or resolve potential hazards before resetting the system. The box also contains a current transformer 7, which detects the current and voltage information of the combiner lines. The box 1 contains a grounding busbar 9, which is connected to the grounding wire.

[0037] It is understandable that the aforementioned incoming circuit breaker, outgoing circuit breaker, temperature and humidity controller, contactor module, transformer, fan, grounding busbar, humidity sensing module, door status switch, smoke detector, temperature probe, heater, surge protector, and audible and visual alarm can all be mature products already available on the market.

[0038] Before the equipment is put into use, the AC cable is connected to the incoming circuit breaker inside the combiner box through the inverter at the front end. The outgoing circuit breaker leads the cable to the low-voltage side of the transformer at the back end. The current, voltage and other information of the combiner line can be detected through the current transformer.

[0039] After the equipment is put into operation, when the internal temperature of the combiner box reaches or exceeds the system's set critical value, the temperature probe 13 acquires the internal temperature data and transmits it to the relay contacts in the temperature and humidity controller, causing the first control module in the contactor module 6 to activate. The fan 8 then starts working, blowing air into the box. After a period of time, when the internal temperature drops below the set value, the relay contacts in the temperature and humidity controller open, and the fan automatically stops. When the internal temperature of the combiner box rapidly reaches the system's set over-temperature limit, the temperature probe 13 acquires the internal temperature data and transmits it to the relay contacts in the temperature and humidity controller 5, causing the third control module in the contactor module 6 to activate. At this time, the electric manual operating device is powered on, the motor operates, and the handle of the combiner outgoing line main circuit breaker moves, causing the combiner outgoing line main circuit breaker to trip and disconnect the power. After the fault is identified and eliminated, manual reactivation can be resumed.

[0040] After the equipment is put into operation, due to the influence of external environmental factors, when the humidity inside the junction box reaches or exceeds the critical value set by the system, the humidity sensing module 10 detects the humidity data inside the box and transmits it to the relay contact of the temperature and humidity controller 5, causing the second control module in the contactor module 6 to operate. At this time, the heater 14 is powered on and starts to work, heating the inside of the box. After a period of time, when the humidity inside the box is lower than the set value, the relay contact in the temperature and humidity controller 5 opens, and the heater stops automatically.

[0041] After the equipment is put into operation, if smoke is emitted inside the combiner box and may cause a fire, the smoke detector 12 will detect that the smoke concentration inside the combiner box reaches the system set value. At the same time, the fan 8 will be triggered to start to exhaust the smoke. Simultaneously, the electric manual control device 4 will be triggered to connect the power supply. The motor will move and drive the handle of the combiner outgoing line main circuit breaker to move. The combiner outgoing line main circuit breaker will trip and cut off the power supply. After the maintenance personnel receive the alarm information, they will go to the site to investigate and eliminate the hidden danger. After that, they will manually close the circuit breaker to restore the power supply.

[0042] This utility model, while retaining the original lightning protection and busbar disconnection functions, adds the ability to sense temperature, humidity, and smoke data of the busbar box itself. It also features audible and visual alarms and automatic circuit breaker control for corresponding protection measures, making it a multi-functional automatic protection unit. This busbar box incorporates multiple automatic protection measures, using commonly available equipment. The sensors are compact and inexpensive, making it highly suitable for various modes and scenarios in new energy power generation projects. While reducing operation and maintenance costs, it further improves fault handling efficiency, indirectly increasing power generation time while protecting equipment, thus bringing higher returns to investors.

[0043] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A smart junction box with a temperature and humidity control system, characterized in that, The device includes a housing and, within the housing, a busbar incoming circuit breaker, a busbar outgoing main circuit breaker, a smoke detector, a temperature and humidity control system, and an electric manual operating device. The temperature and humidity control system includes a temperature probe, a humidity sensing module, a fan, and a heater. The busbar incoming circuit breaker is connected to an inverter, and the busbar outgoing main circuit breaker is connected to the low-voltage side of a transformer. The temperature probe and humidity sensing module are used to detect the internal temperature and humidity of the housing, respectively. The fan works independently to reduce the internal temperature or works in conjunction with the heater to reduce the internal humidity. The smoke detector is used to detect the smoke concentration inside the housing. The electric manual operating device includes a motor and a drive component driven by the motor. The drive component is used to drive the handle of the busbar outgoing main circuit breaker. When the temperature inside the enclosure reaches the set upper limit, and / or when the smoke concentration inside the enclosure reaches the set upper limit, the fan starts to exhaust smoke, and the electric manual operating device drives the handle of the main circuit breaker of the busbar to open and disconnect the power supply.

2. The intelligent combiner box according to claim 1, characterized in that, The temperature and humidity control system also includes a temperature and humidity controller connected to a temperature probe and a humidity sensing module. The temperature and humidity controller controls the fan and heater based on the temperature and humidity information inside the chamber.

3. The intelligent combiner box according to claim 2, characterized in that, The intelligent junction box also includes a contactor module located inside the box. The contactor module is connected to a temperature and humidity controller, a fan, a heater, and an electric manual control device. The contactor module controls the fan, heater, and electric manual control device based on the detection information from the temperature probe, humidity sensor, and smoke probe.

4. The intelligent combiner box according to claim 1, characterized in that, The incoming bus circuit breaker and the outgoing bus circuit breaker are arranged side by side in the upper part of the enclosure. The fan is located on the upper side wall of the enclosure, and the heater is located near the fan.

5. The intelligent combiner box according to claim 3, characterized in that, The enclosure is also equipped with a surge protector that is connected to the contactor module.

6. The intelligent combiner box according to claim 1, characterized in that, The enclosure is also equipped with a door status switch for detecting the door status and an audible and visual alarm connected to the door status switch.

7. The intelligent combiner box according to claim 1, characterized in that, The enclosure is equipped with a lighting system.

8. The intelligent combiner box according to claim 1, characterized in that, The enclosure is also equipped with a current transformer, which detects the current and voltage information of the bus line.

9. The intelligent combiner box according to claim 1, characterized in that, The enclosure is equipped with a grounding busbar. The grounding busbar is connected to the grounding wire.

Images