CN206620094U - The chiasma type concentrator optics of transparent material - Google Patents

Abstract

The utility model is related to the chiasma type concentrator optics of transparent material（1）, it has：The entrance aperture of convex cylindrical shape（2）, the rotation axis of the convex cylindrical shape perpendicular to the summit of main parabolic shape speculum, wherein, the entrance aperture（2）Position correspond to focal line position；Main body, the main body is limited by two offside walls, in the shape for being inverted tack rectangle cone, the basal surface of the main body（3）With the solar cell module being joined seamlessly to it by transparent material（8）Similar size, and the chiasma type concentrator optics is characterised by：Two individually receive half-angles, one perpendicular to another, both of which is along optical axis；And an outgoing half-angle freely defined.

Description

The chiasma type concentrator optics of transparent material

Technical field

The utility model is related to the chiasma type concentrator optics of transparent material.

Background technology

Parabolic shape speculum is commonly used to which direct solar radiation is gathered on focal line.In most cases, this is too Positive energy concentrator is used to heating fluid to produce process heat or produce for assembling solar energy（CSP）The steam in power plant. Produce such speculum on an industrial scale.

It is possible to such line focusing reflective mirror being used as condensation photovoltaic（CPV）The first aggregation stage of system.Patent Shen Please PCT/EP2014/052359 be related to while generating CPV electric power and heat energy（CPVT）Heliotechnics.This patent application is carried " beam manipulating element " is arrived, it gathers the light assembled in advance by speculum on solar cell for the second time.This two Secondary aggregation is theme of the present utility model, i.e. the chiasma type light collection optics for rectangle solar cell module.

Second Aggregation will all work in two focal planes（Explanation sees below）, to reach the poly- of at least hundred times Collection level, so that economically best to utilize CPV batteries, commonly referred many knot devices.Aggregation more than 100 is claimed For height（HCPV）.In addition, target is the high optical efficiency and big acceptance angle of optical element.In addition, leave the light of optics Angle should not become too low, to minimize reflection on the solar cell.Optical element must have into regard to producer face This benefit, production can be realized by molding process.

The challenge for realizing such high aggregation using parabolic shape speculum is these linear reflective mirrors not with abundant High precision is produced.There is form error, particularly on linear direction.The light of irradiation on the receiver can have the several years Standard deviation.Thus, it is found that conventional secondary optics element（Such as, convex lens or Fresnel Lenses）It is difficult to institute above Aggregation, efficiency, acceptance angle, the angle of emergence and the cost-benefit target mentioned.The utility model realizes these targets.

Utility model content

The utility model provides a kind of chiasma type concentrator optics of transparent material, and it has：Convex cylindrical shape Into aperture, the rotation axis of the convex cylindrical shape perpendicular to the summit of main parabolic shape speculum, wherein, the access aperture The position of mouth corresponds to the position of focal line；Main body, the main body is limited by two offside walls, in the shape for being inverted tack rectangle cone, The basal surface of the main body has the size similar with the solar cell module that it is joined seamlessly to by transparent material, and institute Chiasma type concentrator optics is stated to be characterised by：Two individually receive half-angles, one perpendicular to another, both of which edge Optical axis；And an outgoing half-angle freely defined.

Brief description of the drawings

Fig. 1 is according to chiasma type light collection optics of the present utility model.

Fig. 2 a show reception half angle θ together with outgoing half angle θ '.

Fig. 2 b show to receive half-angle ψ together with corresponding outgoing half-angle ψ '.

Fig. 3 is shown according to fixed structure of the present utility model.

Fig. 4 shows solar cell module.

Fig. 5 shows the cross section of mechanical beams.

Fig. 6 shows the clamping to solar cell module by the fixture being placed into the recess of mechanical beams.

Fig. 7 shows the nut on nipple.

Embodiment

The utility model is related to chiasma type light collection optics（Fig. 1, hereinafter referred to concentrator, optical element, element, Or optics）, it uses transparent material（Such as, glass（For example, B270）Or be suitable for bearing through the intensity of its light Any transparent material）It is made.In view of the following, it can be built by mathematical algorithm and optimize optical element（1）：Optics The physical property of the material of element, such as its refractive index；The physical property of the material adjacent with optical element, such as its refraction Rate；And the geometry of optical element, such as into aperture（2）Size, outgoing aperture（3）Size and optical element Height.Optical element be integrated in described in the utility model with solar cell module and mechanical fixed part In chiasma type concentrating component.

The geometry in the entrance aperture of optical element further by its x directions length, its y directions width Degree, its curvature are described, and the geometry can be with the radius determined and sphere, the aspherical or free form at center.

Converging optical element assembles light.In the plane formed by axis z and axis x and by axis z and axis y shapes Into plane in, relative to optical axis Z measure light enter aperture on maximum incident angle degree（Referred to as receive half-angle）.Similarly, The angle of emergence of light is defined after the outgoing aperture.According to snell law, the angle of emergence can be set so that even if neighbouring material Material is not air, and light still leaves optical element with some desired angle.

The structure of optical element starts from two-dimensional design：Length or width and the corresponding angle of emergence based on outgoing aperture, Under conditions of given incidence angle in same in two described planes, algorithm try to achieve into aperture corresponding length or Width and shape, and optical element height.This shape is entirely two dimension.In order to produce stereoscopic optical element, by institute State shape to rotate around optical axis Z, or extend along any one of axis x or y, built perpendicular to measuring wherein for described Incidence angle plane.

In fig. 2 a, briefly depict reception half angle θ together with outgoing half angle θ '.The height of optical element（4）It is given as From the outgoing aperture of optical element to neck（5）.Fig. 2 b show to receive half-angle ψ together with corresponding outgoing half-angle ψ '.

The utility model solves one based on two incidence angles in not exclusively two incidence angles come meaningfully The problem of building converging optical element.The big I at the two angles is extremely different.Optics neither rotates nor extended, but It is made up of following two results：By make shape in one plane obtained by following above construction procedures with another By the shape ' intersection ' obtained by construction procedures in plane）.The chiasma type optical element of gained necessarily keeps one of plane （There is that plane of smaller reception half-angle in typically two）In entrance aperture height and shape.Chiasma type optics member Part, which receives and is gathered in these two pair, receives all light incident in half-angle.

Converging optical element is manufactured with glass and in cost-efficient mode needs the process of glass molding.Element Two parts（Without undercutting）Formed by former, the former is pressed together so that the glass blocks of heating wherein, the glass Glass block will become optical element.In order to ensure the filling of mould, mould can be from being not in actual contact, but must remain certain Distance（Flange（6））, excessive glass left by the distance.The glass enclosure forms flange around the circle of optical element one.This flange Sometimes ratio is assembled to optical efficiency or geometry（That is, into orifice area and the ratio of outgoing orifice area, the entrance aperture Area is projected in the plane formed by axis x and y with the outgoing orifice area both of which）There is negative effect.

By the way that flange is placed under the neck of optical element and parallel to y on the both sides parallel to x directions Flange is set to follow the shape into aperture on the both sides in direction, the utility model solves convex due to what is necessarily led in the mill The problem of efficiency or aggregation caused by edge are reduced.

It can prune, saw and remove, grind off or otherwise remove the flange formed by excessive glass.It will actually remove flat Row is in the flange in x directions, to allow optical element being positioned to direct adjacent gapless each other.

Flange can be additionally operable to optical element being fixed in retainer.For ease of accurate, durable and cost-effectively solid Determine chiasma type concentrator optics, flange（6）Shape can be optimised for following the shape for entering aperture as shown in Figure 1 Shape so that it can easily be clamped to retainer.Such retainer can be（For example）Extruded aluminium configuration part or die casting Part, its along optics width support optics.Alternatively, recess can be cut out in glass flange, so as to retaining element To prevent moving in y-direction, without contact optical active surface.

Can be by providing the fixed structure for being used for keeping optical element（7）Further to make flange（6）Become complicated, such as scheme Shown in 3.

Fig. 4 shows the solar cell module in direct brazing interconnection technique（8）, herein with knot device more than five （9）, formed and chiasma type light collection optics（1）Outgoing aperture（3）Size and shape matching rectangle.Show bypass Diode（10）.By pressure is applied to region（11）On, appropriate location can be retained the assembly in.

Fig. 5 shows mechanical beams（12）Cross section, herein to extrude configuration part, be used for solar cell module（8）/ collection Middle device（1）The retainer of combination and the pipeline of heat transmission medium（13）.Solar cell module（8）It is placed to mechanical beams（12） Surface（14）On, for pressing and keeping the fixture of solar cell module can be placed into recess（15）In.

Shown in Fig. 6 by being placed into mechanical beams（12）（For example, extruding configuration part）Recess（15）In fixture （16）To solar cell module（8）Clamping.Once fixed structure is set in optical element（7）（Fig. 3）, such fixture It just can also be used to be maintained to be close to by chiasma type concentrator optics to extrude configuration part（Similar to for mechanical beams（12） Extrude configuration part）Appropriate location.

Fig. 7 shows in welding and nipple（17）On nut, it maintains framework（18）, and then by solar-electricity Pond component（8）The surface for extruding configuration part fixed to mechanical beams（14）On.

Claims (10)

1. a kind of chiasma type concentrator optics of transparent material（1）, it has：The entrance aperture of convex cylindrical shape（2）, institute The rotation axis of convex cylindrical shape is stated perpendicular to the summit of main parabolic shape speculum, wherein, the entrance aperture（2）Position Corresponding to the position of focal line；Main body, the main body is limited by two offside walls, in the shape for being inverted tack rectangle cone, the main body Basal surface（3）With the solar cell module being joined seamlessly to it by transparent material（8）Similar size, and it is described Chiasma type concentrator optics is characterised by：Two individually receive half-angles, one perpendicular to another, both of which along Optical axis；And an outgoing half-angle freely defined.

2. chiasma type concentrator optics according to claim 1（1）, wherein, the entrance aperture（2）The shape Shape is aspherical or free form.

3. chiasma type concentrator optics according to claim 1, wherein, the shape of the side wall is followed from entering Man-hole opening is delivered to the condition of the total internal reflection of the light in outgoing aperture.

4. chiasma type concentrator optics according to claim 1（1）, wherein, flange（6）Position in the following manner, I.e. so that it neither damages optical efficiency, and geometry aggregation ratio is not damaged, especially, the flange can follow the entrance aperture （2）The shape, and should be located at the chiasma type concentrator optics neck（5）Under.

5. chiasma type concentrator optics according to claim 1（1）, wherein, flange allows the optics It is fixed in supporting construction, and is characterized in that：The flange（6）One or more of groove（7）, wherein, one or Multiple springs can clamp the chiasma type concentrator optics（1）；Or be characterized in that：One or more grooves, wherein, One or more tongues of the supporting construction can keep the chiasma type concentrator optics（1）.

6. chiasma type concentrator optics according to claim 1（1）, wherein, the chiasma type concentrator optics device Part（1）The light is gathered in solar cell module（8）In two or more square or rectangle solar cell on, it is described It is connected in parallel and is oriented to form long rectangular shape to square or rectangle solar cell electricity, wherein, long side is positioned On the focussing direction of master concentrator.

7. chiasma type concentrator optics according to claim 6（1）, wherein, the chiasma type concentrator optics device Part（1）The light is gathered in solar cell module（8）In a rectangle solar cell on, the rectangle solar-electricity Pond has length on the direction of the master concentrator, and the length is at least the 2.5 of the width of the solar cell Times.

8. chiasma type concentrator optics according to claim 1（1）, wherein, the chiasma type concentrator optics device The light is gathered in solar cell module by part（8）On, the solar cell module is pressed against positioned at institute by spring State solar cell module（8）Following mechanical beams（12）Surface（14）On, the spring itself is fixed on the mechanical beams （12）In recess（15）In.

9. chiasma type concentrator optics according to claim 8, wherein, the chiasma type concentrator optics （1）The light is gathered in solar cell module（8）On, the solar cell module passes through plate（18）It is pressed against and is located at The solar cell module（8）The following mechanical beams（12）The surface（14）On, the plate covers the sun Can battery component（8）Outer framework and itself and the solar cell（9）Electric insulation.

10. chiasma type concentrator optics according to claim 9（1）, wherein, the plate（18）Pass through nipple （17）On one or more nuts fix, the nipple is soldered to positioned at the solar cell module（8）Below The mechanical beams（12）The surface（14）Go up and it is passed through in the solar cell module（8）With the plate（18）In Mating hole.