Classifications

• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
  • H10F77/00—Constructional details of devices covered by this subclass
  • H10F77/40—Optical elements or arrangements
  • H10F77/42—Optical elements or arrangements directly associated or integrated with photovoltaic cells, e.g. light-reflecting means or light-concentrating means
  • H10F77/488—Reflecting light-concentrating means, e.g. parabolic mirrors or concentrators using total internal reflection
• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
  • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
  • H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/50—Photovoltaic [PV] energy
  • Y02E10/52—PV systems with concentrators

Definitions

• the invention relates to a solar module with a plurality of bilaterally active solar cells which are arranged above an arrangement of a plurality of channel-shaped mirrors which run parallel to one another and which deflect the part of the solar radiation incident next to the solar cells onto the underside of the solar cells.
• Such a solar module is from M. Collares-Pereira et al., Proc. 7. Europ. PV Solar En. Conference, Sevilla 1986, pp. 1226 to 1228 and has a large number of circular disk-shaped solar cells, which are arranged asymmetrically above the respective channel-shaped reflectors.
• the channel-shaped mirrors have an asymmetrical parabolic profile on average.
• the solar cells which are light-sensitive on both sides, are arranged in the mass of a light-scattering cover plate.
• the object of the invention is to create a solar module of the type mentioned at the outset which can be constructed simply and inexpensively and which has a high degree of efficiency.
• the trough-shaped mirrors are semicircular in cross section and the solar cells are rectangular in shape with a width substantially corresponding to the diameter of the trough-shaped mirrors, and in that the solar cells each protrude half across the mirror opening transversely to the longitudinal direction of the trough-shaped mirrors.
• FIG. 1 shows a detail of the solar module according to the invention in a perspective view
• Fig. 3 shows the underside of a solar cell with the
• Discharge grid and a centrally arranged busbar Discharge grid and a centrally arranged busbar
• Fig. 4 shows a concentrator arrangement with several solar elements
• Fig. 5 shows a solar module with several solar cells, which are each constructed from several solar elements and two concentrators.
• FIG. 1 shows a perspective view of a solar module 1 with a multiplicity of double-sided effective solar cells 2 to 10, which are arranged between a transparent, light-scattering glass pane 11 and a reflector structure 12.
• the reflector structure 12 consists of a multiplicity of channel-shaped mirrors 13 which are arranged parallel to one another and are arranged close to one another.
• the flat end surfaces of the reflector structure 12 on the end faces of the trough-shaped mirrors 13 are preferably designed to be reflective in order to avoid light losses as far as possible. Even the inactive ones Narrow edge surfaces 14 of the solar cells 2 to 10 shown enlarged in FIG. 1 can be mirrored to reduce radiation losses.
• the trough-shaped mirrors 13 can be produced in various ways.
• a reflector body 15 can be seen which has trough-shaped recesses 16 and 17 which run parallel to one another and which have mirror surfaces 18 and 19 assigned to the solar cell 2 .
• the cutouts 16, 17 and the mirror surfaces 18, 19 are semicircular in section at right angles to the longitudinal axis of the channel-shaped mirrors 13.
• the mirror surfaces 18, 19 can e.g. by coating the reflector body 15 with a material that reflects sunlight well.
• the solar cell 2 protrudes laterally beyond the cutouts 16, 17, which are semicircular in section, to approximately the middle of the openings 20, 21 pointing upward in FIG. 2.
• the lower edges 22, 23 of the solar cell 2 are slightly set back from a straight line which runs through the center points of the circles which describe the semicircular shape of the trough-shaped mirrors 13.
• the width of the solar cell 2 corresponds exactly to the diameter of the semicircular recesses 16, 17, the lower edges 22, 23 each lie at a distance of half the web width of the web 24 between the openings Take 16, 17 offset from the center points 26 in the direction of the web 24.
• FIG. 2 shows the radiation indicated by arrows 25, which partially strikes the top 26 of the rectangular solar cell 2, as can be seen in FIG. 1. Another part of the radiation illustrated by the arrows 25 penetrates into the recesses 16, 17, which are mirrored, and is deflected toward the underside 27 of the solar cell 2.
• the underside 27 extends approximately with one half over the mirrored, semi-circular recess 16 and with approximately the other half over the mirrored, semi-circular recess 17.
• the structure shown in detail in FIG. 2 can be replaced, instead of by a more or less solid reflector body 15, by means of individual trough-shaped mirrors 13 which are correspondingly formed from sheet metal and which are connected to their edges, or by a one-piece sheet metal bent in accordance with the numerous trough-shaped mirrors 13 getting produced.
• the sheet metal used to create the trough-shaped mirror 13 is mirrored on the concave side in order to deflect it into the trough-shaped mirror 13 to cause incident radiation on the undersides 27 of the solar cells 2 to 10.
• the inner diameter of the trough-shaped mirrors 13 made of sheet metal again corresponds to the solar cell width, that is to say the distance between the two edge surfaces 14 shown in FIG. 2.
• the reflector structure with trough-shaped mirrors 13 is to mirror semicircular rods or troughs or solid glass or plastic on the convex outside and the flat end faces and optically along the radial planes to the top surfaces of the solar cells 2 to 10 as well as the Couple cover 11.
• the semicircular rods can be coupled to the solar cells 2 to 10 and the cover 11 in such a way that in each case two adjacent solid glass or plastic semicircular rods are provided with a recess which extends axially and has a depth which corresponds to the overall height of the solar cells 2 to 10.
• the recesses project from the right or left edge to approximately just before the straight line running through the center points 26. Since the trough-shaped mirrors 13 made of solid, externally mirrored material each have a semicircular cut, there is a favorable material utilization if round bars are divided along their central plane.
• the semicircular bars in addition to the contact surfaces of the solar cells 2 to 10 with a rectangular cross section
• the height of the overall height "of Solar ⁇ cells 2 to 10 corresponds to, and is well optically coupled to the cover. 11 on the surfaces of the Rand ⁇ 14 of the solar cells 2 to 10 pioneering sides are rectangular in cross-section paragraphs mirrored just like the round outside of the semicircular rods.
• the trough-shaped mirrors 13 are made from solid glass or plastic round rods halved in the longitudinal direction without a recess for receiving the solar cells on the side facing the glass plate 11, channels are formed between the glass plate 11 and the flat upper sides of the semicircular rods, the height of the overall height of the solar cells 2 to 10 and their width corresponds to the lateral spacing of the solar cells 2 to 10 or the diameter of the semicircular rods. These channels can also be used for cooling purposes in that gases or liquids are caused to flow through these channels.
• FIG. 4 shows in section several solar elements 201, 202, 203 and 204 of a bilaterally active concentrator arrangement 200, which is composed of an upper concentrator 210 and a lower concentrator 220.
• the solar elements 201 to 204 are light-sensitive both on the top and on the bottom.
• the upper concentrator 210 has, for example, the shape that can be seen in FIG. 4, which allows light incident on the upper side 230 to be concentrated and guided to the upper sides of the solar elements 201 to 204. Accordingly, the solar light affecting the underside 240 is concentrated on the undersides of the solar elements 201 to 204.
• the upper concentrator 210 and the lower concentrator 220 of the concentrator arrangement 200 are each constructed identically.
• FIG. 5 shows how a plurality of concentrator arrangements 200, 300 and 400, each with a multiplicity of solar elements 201 to 204, are used instead of the solar cells 2, 5 and 8 which can be seen in FIG. 1.
• the concentrator arrangements 200, 300, 400 become very thin, so that the optical conditions correspond to those in FIGS. 1 and 2.
• the side surfaces 245 are provided with mirrors in order to keep the light losses as small as possible.
• a plurality of solar cells 2, 3, 4 or 5, 6, 7 or 8, 9, 10 are arranged in a row.
• a further possibility of arranging the solar cells 2 to 10 is to arrange the solar cells 3, 6 and 9 laterally offset by one solar cell width in relation to the solar cells 2, 4 or 5, 7 and 8, 10, so that the solar cells 2 to 10 are not arranged in strips, but rather like a chessboard.

Landscapes

• Photovoltaic Devices (AREA)
• Optical Elements Other Than Lenses (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6342075

Family Applications (1)

Country Status (4)

Cited By (8)

Families Citing this family (7)

Citations (2)

Family Cites Families (1)

• 1987
  • 1987-12-08 DE DE19873741485 patent/DE3741485A1/de active Granted
• 1988
  • 1988-11-07 WO PCT/DE1988/000689 patent/WO1989005520A1/de active IP Right Grant
  • 1988-11-07 EP EP88909972A patent/EP0347443B1/de not_active Expired - Lifetime
  • 1988-11-07 AT AT88909972T patent/ATE79485T1/de not_active IP Right Cessation
  • 1988-11-07 DE DE8888909972T patent/DE3873757D1/de not_active Expired - Lifetime

Patent Citations (2)

Non-Patent Citations (2)

Also Published As

Similar Documents

Legal Events