A small household non-inductive access exit grid-connected box

Abstract

The utility model relates to a grid-connected equipment technical field especially, is a kind of small domestic non-inductive access exit grid-connected box, including box, inverter, first circuit breaker, distributed power access unit and socket, the front end of mounting panel is provided with first joint and second joint, inverter is arranged in box, inverter is provided with battery pack interface, battery pack interface is used to connect energy storage battery, first joint and second joint are connected with the output end of inverter, the input end of inverter is provided with photovoltaic input interface, and the output end of inverter is provided with load joint.The utility model can automatically start generator and complete power supply switching when power interruption, the whole process is fast and stable, load is uninterrupted power supply, realizes zero perception power failure, effectively protects sensitive electrical equipment, when power recovery, system automatically controls hybrid inverter and is preferentially switched to power supply mode, and sends stop command to diesel generator, realizes the orderly, safe exit of generator.

Description

Technical Field

[0001] This utility model relates to the field of grid-connected equipment technology, and in particular to a small household seamless access and disconnection grid-connected box. Background Technology

[0002] With the transformation of the energy structure and the popularization of distributed energy systems, household users have placed higher demands on the reliability, economy, and intelligence of electricity supply. As an important component of clean and renewable energy, photovoltaic power generation has been widely used in residential settings.

[0003] Traditional grid-connected solutions typically configure photovoltaic inverters, energy storage systems, generator interfaces, and mains power connections independently. Switching between these power sources relies on manual operation or simple relay logic control, lacking a unified coordination and management mechanism. When the mains power fails, the system often experiences significant switching delays, leading to short-term power loss in the load and affecting the normal operation of sensitive electrical equipment (such as computers, communication equipment, and refrigerators), a phenomenon known as "sensory power outage." Furthermore, during the mains power restoration process, if synchronous detection and orderly disconnection are not achieved, it can easily lead to diesel generators operating in parallel with the grid, creating a risk of backfeeding, threatening the safety of grid maintenance personnel, and violating grid connection regulations. Utility Model Content

[0004] This invention aims to at least solve the technical problems existing in the prior art. To this end, this invention proposes a small household seamless access and disconnection grid box, which is compact in structure, supports multi-source collaborative operation, and improves the safety and continuity of household power supply.

[0005] A small, household, seamless grid-connected box according to some embodiments of the present invention includes a box body, an inverter, a first circuit breaker, a distributed power supply access unit, and a socket. The box body has a housing space, and a mounting plate is provided at the front end of the housing space. A first connector and a second connector are provided at the front end of the mounting plate. The inverter is disposed within the box body, and a connecting frame is provided within the box body. The first circuit breaker and the distributed power supply access unit are both disposed on the connecting frame. The first connector is used to connect to mains power, and the second connector is used to connect to the output terminal of a generator. The inverter has a battery pack interface for connecting an energy storage battery. The distributed power supply access unit, the first connector, and the second connector are connected to the input terminal of the inverter. The input terminal of the inverter has a photovoltaic input interface. The output terminal of the inverter is connected in series with the first circuit breaker and the socket, and a load connector is provided at the output terminal of the inverter.

[0006] A small, household-use, seamless connection and disconnection network box according to some embodiments of the present invention has at least the following beneficial effects: This invention integrates mains power, a diesel generator, photovoltaic modules, and energy storage batteries into a hybrid inverter. A distributed power access unit monitors the system status in real time, enabling automatic generator startup and power switching during mains power outages. The entire process is fast and stable, ensuring uninterrupted power supply and achieving zero-perceptible power outages. This effectively protects sensitive electrical equipment and significantly improves the reliability and continuity of household power. The distributed power access unit and the hybrid inverter are linked via a communication protocol, allowing real-time monitoring of the mains power status. When mains power is restored, the system automatically controls the hybrid inverter to prioritize switching to mains power mode and issues a shutdown command to the diesel generator, ensuring the orderly and safe shutdown of the generator. This avoids asynchronous parallel operation between the generator and the grid, completely eliminating the risk of backfeeding, ensuring the safety of grid maintenance personnel, and complying with grid connection safety standards. This grid-connected box integrates core components such as mains power access, generator interface, inverter, circuit breaker, distributed power access unit, and load output socket into a single compact and rationally laid-out structure. Modular installation via mounting plates and connecting brackets reduces external wiring, lowers construction complexity, and improves system integrity and reliability. It is suitable for rapid deployment and subsequent maintenance in home power distribution environments. The sockets and load connectors on the enclosure facilitate direct connection of local loads by users. At the same time, it can be connected to a monitoring terminal through the communication interface of the inverter or distributed power access unit to realize real-time display and remote management of data such as operating status, power information, and fault alarms, thereby improving the system's intelligence level and user experience.

[0007] According to some embodiments of the present invention, a small household seamless access and disconnection grid box is provided, wherein an incandescent lamp is provided on the top of the connecting frame, the first circuit breaker is connected in series with the incandescent lamp, and the incandescent lamp is connected in parallel with the socket.

[0008] According to some embodiments of the present invention, a small household seamless access and disconnection grid box is provided with two incandescent lamps on the top of the connecting frame. The first circuit breaker is connected in series with the two incandescent lamps respectively, and the two incandescent lamps are connected in parallel.

[0009] According to some embodiments of the present invention, a small household seamless access and disconnection grid box is provided, wherein two second circuit breakers are provided on the connecting frame, and the two second circuit breakers are connected in series with the two incandescent lamps respectively.

[0010] According to some embodiments of the present invention, a small household seamless access and disconnection grid-connected box is provided. The connecting frame includes a rear frame and a front frame. The inverter and the incandescent lamp are both mounted on the rear frame. A first crossbar is provided in the middle of the front frame. The second circuit breaker and the distributed power supply access unit are both mounted on the first crossbar. A second crossbar is provided at the top of the front frame. The first circuit breaker and the socket are both mounted on the second crossbar.

[0011] According to some embodiments of the present invention, a small household seamless access and disconnection grid connection box is provided at the front end of the box body.

[0012] According to some embodiments of the present invention, a small household seamless access and disconnection grid-connected box is provided at the front end of the accommodating space, the mounting plate is provided at the bottom of the inner door, the inner door has a window, and the front end of the inverter is provided with a display screen, which is located inside the window.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model embodiment with the front door and inner door hidden.

[0016] Figure 3 This is a schematic diagram of the inverter structure according to an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of an embodiment of the present utility model.

[0018] Reference numerals: 1. Enclosure; 2. Inverter; 3. First circuit breaker; 4. Distributed power supply access unit; 5. Socket; 6. Accommodation space; 7. Mounting plate; 8. First connector; 9. Second connector; 10. Connecting frame; 11. Battery pack interface; 12. Photovoltaic input interface; 13. Load connector; 14. Incandescent lamp; 15. Second circuit breaker; 16. Rear frame; 17. Front frame; 18. First crossbar; 19. Second crossbar; 20. Front door; 21. Inner door; 22. Display screen; 23. Third circuit breaker. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, left, right, front, and back, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] like Figures 1-4 As shown in the figure, this utility model embodiment provides a small household seamless access and disconnection network box.

[0024] A small, household, seamless grid-connected box includes a housing 1, an inverter 2, a first circuit breaker 3, a distributed power supply unit 4, and a socket 5. The housing 1 has an internal storage space 6, with a mounting plate 7 at its front end. The mounting plate 7 has a first connector 8 and a second connector 9 at its front end. The inverter 2 is housed within the housing 1, which also has a connecting frame 10. The first circuit breaker 3 and the distributed power supply unit 4 are both mounted on the connecting frame 10. The first connector 8 is used to connect to mains power, and the second connector 9 is used to connect to the output of a generator. The inverter 2 has a battery pack interface 11 for connecting an energy storage battery. The distributed power supply unit 4, the first connector 8, and the second connector 9 are connected to the input of the inverter 2. The input of the inverter 2 has a photovoltaic input interface 12. The output of the inverter 2 is connected in series with the first circuit breaker 3 and the socket 5, and the output of the inverter 2 has a load connector 13.

[0025] This invention integrates mains power, a diesel generator, photovoltaic modules, and energy storage batteries into a hybrid inverter 2, with a distributed power access unit 4 monitoring the system status in real time. In the event of a mains power outage, the system automatically starts the generator and completes the power switch. The entire process is fast and stable, ensuring uninterrupted power supply to the load, achieving zero-perceptible power outages, effectively protecting sensitive electrical equipment, and significantly improving the reliability and continuity of household power. The distributed power access unit 4 and the hybrid inverter 2 are linked via a communication protocol, allowing real-time monitoring of the mains power status. When mains power is restored, the system automatically controls the hybrid inverter 2 to prioritize switching to mains power supply mode and issues a shutdown command to the diesel generator, achieving an orderly and safe generator shutdown. This avoids asynchronous parallel operation between the generator and the grid, completely eliminating the risk of backfeeding and ensuring the safety of grid maintenance personnel. This grid-connected box is fully compliant with grid connection safety standards. It integrates core components such as mains power access, generator interface, inverter 2, first circuit breaker 3, distributed power access unit 4, load connector 13, and socket 5 into a single enclosure 1, resulting in a compact structure and rational layout. Modular installation is achieved through mounting plate 7 and connecting frame 10, reducing external wiring, lowering construction complexity, and improving system integrity and reliability. It is suitable for rapid deployment and subsequent maintenance in residential power distribution environments. The socket 5 and load connector 13 on enclosure 1 facilitate direct connection of local loads by users. Simultaneously, it can connect to a monitoring terminal via the communication interface of inverter 2 or distributed power access unit 4, enabling real-time display and remote management of operating status, power information, fault alarms, and other data, thus enhancing the system's intelligence and user experience.

[0026] This embodiment describes a small, household-use, seamless grid connection / disconnection box. An incandescent lamp 14 is mounted on the top of the connecting frame 10. The first circuit breaker 3 is connected in series with the incandescent lamp 14, and the incandescent lamp 14 is connected in parallel with the socket 5. Specifically, the incandescent lamp 14 is mounted on the top of the connecting frame 10 and connected in series with the first circuit breaker 3, while also being connected in parallel with the socket 5. This allows the incandescent lamp 14 to be used as a system operation status indicator or local lighting. When the first circuit breaker 3 is closed and the system is powered, the incandescent lamp 14 automatically illuminates, visually reflecting the power supply status. This facilitates nighttime operation or troubleshooting, improving the device's human-machine interface and ease of use. It is understood that... Figure 2 In the middle, no incandescent bulb was installed on the lamp holder.

[0027] This embodiment describes a small, household-grade, seamless grid connection / disconnection box. The top of the connecting frame 10 is equipped with two incandescent lamps 14. The first circuit breaker 3 is connected in series with each of the two incandescent lamps 14, and the two incandescent lamps 14 are connected in parallel. Specifically, the parallel connection of the two incandescent lamps 14 improves the lighting brightness and coverage, ensuring sufficient illumination inside and around the box 1.

[0028] This embodiment describes a small, household-grade, seamless connection and disconnection grid-connected box. The connecting frame 10 is equipped with two second circuit breakers 15, each connected in series with one of the two incandescent lamps 14. Specifically, by configuring two second circuit breakers 15 connected in series with each of the two incandescent lamps 14, independent on / off control and overload protection for each lamp 14 are achieved. Users can turn on one or both lamps according to their actual lighting needs, saving energy and facilitating fault isolation and lamp replacement, thus improving the safety and flexibility of the lighting circuit.

[0029] This embodiment describes a small household seamless grid connection box. The connecting frame 10 includes a rear frame 16 and a front frame 17. The inverter 2 and the incandescent lamp 14 are both mounted on the rear frame 16. A first crossbar 18 is provided in the middle of the front frame 17. The second circuit breaker 15 and the distributed power access unit 4 are both mounted on the first crossbar 18. A second crossbar 19 is provided at the top of the front frame 17. The first circuit breaker 3 and the socket 5 are both mounted on the second crossbar 19. Specifically, a modular connecting frame 10 structure consisting of a rear frame 16 and a front frame 17 is adopted to achieve orderly zoning of electrical components: the inverter 2 and the incandescent lamp 14 are installed on the rear frame 16 to ensure stable heat dissipation of the main power devices; the second circuit breaker 15 and the distributed power supply access unit 4 are located on the first crossbar 18, and the first circuit breaker 3 and the socket 5 are located on the second crossbar 19, forming a hierarchical functional area layout, optimizing the utilization of internal space, improving wiring standardization and maintenance convenience, and facilitating mass production and on-site maintenance.

[0030] This embodiment describes a small, household-use, seamless grid connection / disconnection box. The box 1 has a front door 20 at its front end. Specifically, the front door 20 effectively seals the accommodating space 6, preventing dust, moisture, and foreign objects from entering the box 1 and protecting critical electrical components such as the inverter 2 and the first circuit breaker 3. Simultaneously, the front door 20 provides physical protection, preventing users from accidentally touching live parts, significantly improving equipment operational safety and environmental adaptability.

[0031] This embodiment describes a small, household-use, contactless grid connection / disconnection box. The front of the accommodating space 6 has an inner door 21, and the mounting plate 7 is located at the bottom of the inner door 21. A window is provided on the inner door 21, and a display screen 22 is located at the front of the inverter 2, within the window. Specifically, an inner door 21 with a window is added to the front of the accommodating space 6, and the mounting plate 7 is located at the bottom of the inner door 21. The display screen 22 of the inverter 2 faces the window. This design allows users to directly read the operating parameters on the display screen 22 through the window without opening the front door 20, achieving non-contact status monitoring. This improves operational convenience and information acquisition efficiency while ensuring safe isolation.

[0032] In this embodiment, a small household seamless access and disconnection grid box is provided, wherein a third circuit breaker 23 is provided on the connecting frame 10, and the socket 5 is connected in series with the third circuit breaker 23.

[0033] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A small, household-use, seamless connection and disconnection grid box, characterized in that: The system includes a housing, an inverter, a first circuit breaker, a distributed power supply unit, and a socket. The housing has a storage space, and a mounting plate is located at the front end of the storage space. The mounting plate has a first connector and a second connector at its front end. The inverter is housed within the housing, which also has a connecting frame. The first circuit breaker and the distributed power supply unit are both mounted on the connecting frame. The first connector is used to connect to mains power, and the second connector is used to connect to the output of a generator. The inverter has a battery pack interface for connecting an energy storage battery. The distributed power supply unit, the first connector, and the second connector are connected to the input of the inverter. The input of the inverter has a photovoltaic input interface. The output of the inverter is connected in series with the first circuit breaker and the socket, and the output of the inverter has a load connector.

2. The small household seamless connection and disconnection grid box according to claim 1, characterized in that: An incandescent lamp is installed on the top of the connecting frame. The first circuit breaker is connected in series with the incandescent lamp, and the incandescent lamp is connected in parallel with the socket.

3. A small household seamless connection and disconnection network box according to claim 2, characterized in that: Two incandescent lamps are installed on the top of the connecting frame. The first circuit breaker is connected in series with the two incandescent lamps respectively, and the two incandescent lamps are connected in parallel.

4. A small household seamless connection and disconnection grid box according to claim 3, characterized in that: The connecting frame is equipped with two second circuit breakers, which are connected in series with the two incandescent lamps respectively.

5. A small household seamless connection and disconnection grid box according to claim 4, characterized in that: The connecting frame includes a rear frame and a front frame. The inverter and the incandescent lamp are both mounted on the rear frame. A first crossbar is provided in the middle of the front frame. The second circuit breaker and the distributed power supply access unit are both mounted on the first crossbar. A second crossbar is provided at the top of the front frame. The first circuit breaker and the socket are both mounted on the second crossbar.

6. A small household seamless access and disconnection grid box according to claim 1, characterized in that: The front of the enclosure is provided with a front door.

7. A small household seamless connection and disconnection grid box according to claim 6, characterized in that: The accommodating space has an inner door at its front end, the mounting plate is located at the bottom of the inner door, the inner door has a window, and the inverter has a display screen at its front end, which is located inside the window.

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