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CN-224218355-U - Photovoltaic conversion module, photovoltaic alternating current module and photovoltaic system

CN224218355UCN 224218355 UCN224218355 UCN 224218355UCN-224218355-U

Abstract

The application discloses a photovoltaic conversion assembly, a photovoltaic alternating-current assembly and a photovoltaic system, which relate to the technical field of photovoltaics and comprise a micro inverter and a micro storage unit, wherein a first connecting terminal and a second connecting terminal are arranged at the output end of the micro inverter, the first connecting terminal is used for being connected with an adjacent photovoltaic assembly in parallel, the second connecting terminal is used for being connected with electrical equipment or a grid-connected system, and the micro storage unit is connected with the micro inverter. According to the photovoltaic conversion assembly, the grid connection can be directly realized through the second connecting terminal of the output end of the micro-inverter, an alternating current bus is not needed to be connected, meanwhile, the direct current of the photovoltaic assembly can be stored through the micro-storage unit, so that when the photovoltaic assembly does not generate electricity, the micro-storage unit can convert the direct current into the alternating current through the micro-inverter for grid connection, the output efficiency of the photovoltaic system is ensured, and meanwhile, the stability of the photovoltaic system is improved.

Inventors

  • HE PENG
  • CHEN GUOJING
  • ZHENG BENBEN
  • ZHANG JIE

Assignees

  • 南京光献科技有限公司

Dates

Publication Date
20260508
Application Date
20250307

Claims (10)

  1. 1. A photovoltaic conversion module, comprising: The micro-inverter (101), wherein the output end of the micro-inverter (101) is provided with a first connecting terminal (1011) and a second connecting terminal (1012), the first connecting terminal (1011) is used for being connected with an adjacent photovoltaic module (300) in parallel, and the second connecting terminal (1012) is used for being connected with electrical equipment or a grid-connected system; and the micro-storage unit (200) is connected with the micro-inverter (101).
  2. 2. The photovoltaic conversion module according to claim 1, characterized in that the first connection terminals (1011) are two, and the first connection terminals (1011) are one of male and female plug terminals.
  3. 3. The photovoltaic conversion assembly according to claim 1, characterized in that the output of the micro-inverter (101) is further provided with a first direct current connector (103), the first direct current connector (103) being connected with the micro-storage unit (200).
  4. 4. A photovoltaic conversion module according to claim 3, characterized in that the micro-inverter (101) and the micro-storage unit (200) are both rod-shaped structures, and the first dc connector (103) of the micro-inverter (101) is plug-connected with the micro-storage unit (200).
  5. 5. The photovoltaic conversion assembly according to claim 1, characterized in that the second connection terminal (1012) comprises a plug for connection with an electrical device or grid-connected system.
  6. 6. The photovoltaic conversion module according to claim 1, characterized in that the first connection terminal (1011) and the second connection terminal (1012) are connected to the output of the micro-inverter (101) by means of an ac cable (106), respectively.
  7. 7. A photovoltaic ac module characterized by comprising a junction box (102) and the photovoltaic conversion module according to any one of claims 1 to 6, wherein the junction box (102) is connected to an input terminal of the micro inverter (101).
  8. 8. The photovoltaic ac module according to claim 7, characterized in that the input of the micro-inverter (101) is provided with a second dc connector (105), and the micro-inverter (101) is connected to the junction box (102) by means of the second dc connector (105).
  9. 9. The photovoltaic ac module according to claim 8, characterized in that the positive and negative poles of the output of the junction box (102) are connected to the second dc connector (105) by a dc cable (104) and/or that the end of the dc cable (104) is provided with a plug terminal (1041) that plugs into the second dc connector (105).
  10. 10. A photovoltaic system, characterized in that it comprises one or more photovoltaic modules (300), and each photovoltaic module (300) is provided with a photovoltaic ac module according to any one of claims 7 to 9.

Description

Photovoltaic conversion module, photovoltaic alternating current module and photovoltaic system Technical Field The application relates to the technical field of photovoltaics, in particular to a photovoltaic conversion assembly, a photovoltaic alternating current assembly and a photovoltaic system. Background The traditional photovoltaic system generally comprises a direct current component and an inverter, and when the inverter fails or part of the photovoltaic component is affected by the problems of damage, local shadow, dirt, inclination angle, azimuth, different ageing degrees, tiny cracks and the like, the configuration of the photovoltaic system is offset, so that the output efficiency is reduced. Therefore, how to improve the stability of the photovoltaic system while guaranteeing the output efficiency of the photovoltaic system is a technical problem to be solved by those skilled in the art. Disclosure of utility model Therefore, the present application is directed to a photovoltaic conversion module, which can ensure the output efficiency of a photovoltaic system and improve the stability of the photovoltaic system. Another object of the present application is to provide a photovoltaic ac module having the above photovoltaic conversion module. Another object of the present application is to provide a photovoltaic system having the above photovoltaic ac module. In order to achieve the above purpose, the present application provides the following technical solutions: a photovoltaic conversion assembly comprising: The output end of the micro inverter is provided with a first connecting terminal and a second connecting terminal, the first connecting terminal is used for being connected with an adjacent photovoltaic module in parallel, and the second connecting terminal is used for being connected with electrical equipment or a grid-connected system; And the micro-storage unit is connected with the micro-inverter. Alternatively, in the above photovoltaic conversion module, the first connection terminals are two, and the first connection terminal is one of a male plug terminal and a female plug terminal. Optionally, in the above photovoltaic conversion module, the output end of the micro inverter is further provided with a first dc connector, and the first dc connector is connected with the micro storage unit. Optionally, in the above photovoltaic conversion module, the micro inverter and the micro storage unit are both in a rod-shaped structure, and the first dc connector of the micro inverter is connected with the micro storage unit in a plug-in connection. Optionally, in the above photovoltaic conversion module, the second connection terminal includes a plug for connecting with an electrical device or a grid-connected system. Optionally, in the above photovoltaic conversion module, the first connection terminal and the second connection terminal are connected to an output terminal of the micro inverter through an ac cable, respectively. A photovoltaic ac module comprising a junction box and the photovoltaic conversion module of any of the above, the junction box being connected to an input of the micro-inverter. Optionally, in the photovoltaic ac module, the input end of the micro inverter is provided with a second dc connector, and the micro inverter is connected with the junction box through the second dc connector. Optionally, in the photovoltaic ac module, the positive electrode and the negative electrode of the output end of the junction box are connected with the second dc connector through a dc cable. Optionally, in the photovoltaic ac module, an end of the dc cable is provided with a plug terminal that plugs into the second dc connector. A photovoltaic system comprising one or more photovoltaic modules, each of which has a photovoltaic ac module as claimed in any one of the preceding claims disposed thereon. According to the photovoltaic conversion assembly, the first connecting terminal and the second connecting terminal are arranged at the output end of the micro inverter, the photovoltaic conversion assembly can be connected with the micro inverter of the adjacent photovoltaic assembly in parallel through the first connecting terminal, and the photovoltaic conversion assembly is connected with electrical equipment or a grid-connected system through the second connecting terminal, so that an AC bus cable is not required to be connected to the grid, and grid connection is performed. In addition, the micro-storage unit can be connected with the micro-inverter, and when the micro-inverter is not connected with the grid, direct current generated by the photovoltaic module can be stored in the micro-storage unit, so that when the photovoltaic module does not generate electricity, the micro-storage unit can convert the direct current into alternating current through the micro-inverter for grid connection. According to the photovoltaic conversion assembly provided by the application, the second c