A photovoltaic system includes an inverter and a plurality of photovoltaic units connected to the inverter. Each photovoltaic unit includes a controller and one or more photovoltaic modules connected to the controller. The controller in each photovoltaic unit is further configured to obtain a power carrier signal sent by a controller in another photovoltaic unit of the plurality of photovoltaic units, determine an attenuation reference factor of the power carrier signal based on the obtained power carrier signal, and send the attenuation reference factor to the inverter. The inverter is further configured to group the plurality of photovoltaic units based on the attenuation degree of the power carrier signal obtained by each photovoltaic unit. This application can implement automatic grouping of photovoltaic units.

The invention relates to a movable shingle arrangement of rectangular strip modules comprising a covering of solar cells on carrier materials that differ according to choice, such that the shingle arrangement can be arranged in such a way as to allow it to be unfolded, extended or set up as a canopy. The problem addressed is that of providing a novel connecting structure for a movable shingle arrangement, wherein supporting structures for mounting and displacement purposes are formed on an arranged system of rails that can be extended or swung out. The shingle arrangement (1) according to the invention consists of coupled rectangular strip modules (2), which are covered with crystalline and thin-layer solar cells (3) and overlap one another. A system of rails (6, 21) is arranged along at least two outer edges (18). Formed under the system of rails (6, 21) are supporting structures suitable for mounting and guiding purposes. Arranged on the rectangular strip modules (2) is/are one, two or more rows of solar cells (3), which are arranged next to one another and are interconnected in such a way that there is a maximum possible surface coverage with active photovoltaic solar-cell material. In the extended state, the rectangular strip modules (2) overlap like shingles. Along at least one long side (19) of the rectangular strip module (2), a defined perforated structure made up of depressions or through-openings (9) is arranged in such a way that elevations, balls or pins (10) of an adjacently arranged rectangular strip module (2) engage in this perforated structure, and so a mechanically stable connection is produced. The rectangular strip modules (2) are coupled to one another by means of a cable pull or a system of rails (5) in such a way that they can be extended or retracted manually or automatically. In the pulled-in or retracted state, the rectangular strip modules (2) arranged longitudinally or transversely alongside one another lie one above the other in a stack or one alongside the other in a shingle box (23). The rectangular strip modules (2) may be set up for example in an upwardly sloping manner by means of a system of double rails, in order to make an optimum energy yield possible.

The invention relates to a movable shingle arrangement of rectangular strip modules comprising a covering of solar cells on carrier materials that differ according to choice, such that the shingle arrangement can be arranged in such a way as to allow it to be unfolded, extended or set up as a canopy. The problem addressed is that of providing a novel connecting structure for a movable shingle arrangement, wherein supporting structures for mounting and displacement purposes are formed on an arranged system of rails that can be extended or swung out. The shingle arrangement (1) according to the invention consists of coupled rectangular strip modules (2), which are covered with crystalline and thin-layer solar cells (3) and overlap one another. A system of rails (6, 21) is arranged along at least two outer edges (18). Formed under the system of rails (6, 21) are supporting structures suitable for mounting and guiding purposes. Arranged on the rectangular strip modules (2) is/are one, two or more rows of solar cells (3), which are arranged next to one another and are interconnected in such a way that there is a maximum possible surface coverage with active photovoltaic solar-cell material. In the extended state, the rectangular strip modules (2) overlap like shingles. Along at least one long side (19) of the rectangular strip module (2), a defined perforated structure made up of depressions or through-openings (9) is arranged in such a way that elevations, balls or pins (10) of an adjacently arranged rectangular strip module (2) engage in this perforated structure, and so a mechanically stable connection is produced. The rectangular strip modules (2) are coupled to one another by means of a cable pull or a system of rails (5) in such a way that they can be extended or retracted manually or automatically. In the pulled-in or retracted state, the rectangular strip modules (2) arranged longitudinally or transversely alongside one another lie one above the other in a stack or one alongside the other in a shingle box (23). The rectangular strip modules (2) may be set up for example in an upwardly sloping manner by means of a system of double rails, in order to make an optimum energy yield possible.

A connector (7) includes: a first connector part (10) having a first module side connection part connected to one end of an OSFP module in the front (F), having a first substrate side connection part connected to a substrate, and installed on the substrate; a second connector part (20) provided at a position such that the first module side connection part is interposed between the substrate and the second connector part (20), having a second module side connection part connected to one end of an OSFP module at the front (F), having a second substrate side connection part connected to the substrate, and stacked on the first connector part (10); and an intermediate part (30) provided between the first connector part (10) and the second connector part (20), and a cooling flow path in which air flows from the front (F) side toward the rear (R) side of the connector (7) is formed in the intermediate part (30).

A connector (7) includes: a first connector part (10) having a first module side connection part connected to one end of an OSFP module in the front (F), having a first substrate side connection part connected to a substrate, and installed on the substrate; a second connector part (20) provided at a position such that the first module side connection part is interposed between the substrate and the second connector part (20), having a second module side connection part connected to one end of an OSFP module at the front (F), having a second substrate side connection part connected to the substrate, and stacked on the first connector part (10); and an intermediate part (30) provided between the first connector part (10) and the second connector part (20), and a cooling flow path in which air flows from the front (F) side toward the rear (R) side of the connector (7) is formed in the intermediate part (30).

A power conversion circuit is used in a solar array suitable for, e.g., roadside adjacent installation. The power conversion circuit includes an inverter with a first stage electrically coupled to one or more solar panels. A third stage of the circuit has a DC to AC converter that provides less than a 50 VAC load voltage to a load, and a second stage that is coupled between the first and third stages and provides an isolated electrical power coupling therebetween. A sync interface communicatively couples a controller to other controllers dedicated to one or more other respective inverters of the solar array via a sync signal. The controllers synchronize the third stages of the inverters via the sync signal. The third stages of the inverters are coupled in series to provide a load output voltage.

A power conversion circuit is used in a solar array suitable for, e.g., roadside adjacent installation. The power conversion circuit includes an inverter with a first stage electrically coupled to one or more solar panels. A third stage of the circuit has a DC to AC converter that provides less than a 50 VAC load voltage to a load, and a second stage that is coupled between the first and third stages and provides an isolated electrical power coupling therebetween. A sync interface communicatively couples a controller to other controllers dedicated to one or more other respective inverters of the solar array via a sync signal. The controllers synchronize the third stages of the inverters via the sync signal. The third stages of the inverters are coupled in series to provide a load output voltage.

A photoelectric conversion module includes a substrate, a photoelectric conversion element mounted on the substrate, and a connector mounted on the substrate, the connector including a terminal that is electrically coupled to the photoelectric conversion element, wherein the connector is configured such that coupling the connector to a connector of another photoelectric conversion module causes the photoelectric conversion element to be electrically coupled to a photoelectric conversion element of the another photoelectric conversion module.

A photoelectric conversion module includes a substrate, a photoelectric conversion element mounted on the substrate, and a connector mounted on the substrate, the connector including a terminal that is electrically coupled to the photoelectric conversion element, wherein the connector is configured such that coupling the connector to a connector of another photoelectric conversion module causes the photoelectric conversion element to be electrically coupled to a photoelectric conversion element of the another photoelectric conversion module.

Disclosed is a sliced cell photovoltaic module, comprising one or more cell units connected in series, wherein each cell unit comprises one cell string sequence or a plurality of cell string sequences connected in series or in parallel; each cell string sequence comprises one cell string or a plurality of cell strings connected in parallel by means of a bus bar; and each cell string comprises a plurality of small cell slices connected in series by means of connection materials; the spacing between the plurality of small cell slices is −2 to 5 mm, wherein each small cell slice is one of 2-8 independent small cell slices obtained by means of laser cutting a solar cell with a size of 156*156 to 300*300, etc.; each small cell slice has a positive electrode and a back electrode; and the positions of each positive electrode and each back electrode are superposed with each other or are respectively at the edges of two ends of the small cell slice. According to the photovoltaic module of the present application, the module power is greatly improved, and a sharp increase in a short-circuit current of the module cannot be caused, such that the power loss cannot be increased, and a potential failure risk, caused by an increase in a rated current of a junction box, of the module can also be avoided.