Concentrated solar cell modules and concentrated solar cell strips
By using an integrated, molded focusing element design, the problem of poor stability of focusing optical elements is solved, resulting in higher stability and photoelectric conversion efficiency, extended service life, and reduced production complexity and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI XIANJIA SEMICONDUCTOR TECHNOLOGY CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-30
Smart Images
Figure CN224438935U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic technology, and in particular to a concentrating solar cell module and a concentrating solar cell strip. Background Technology
[0002] Concentrated photovoltaic (CPV) technology, as a low-carbon and environmentally friendly power generation technology, has been widely used. Gallium arsenide (GaAs) CPV, as a representative of CPV technology, significantly outperforms other technologies, such as silicon, in terms of photoelectric conversion efficiency. CPV technology uses relatively inexpensive concentrating optical elements to focus sunlight onto relatively small photovoltaic cells. However, it is difficult to uniformly concentrate light at a high magnification onto the effective area of the solar cell using Fresnel lenses; the light spot may be larger or smaller than the solar cell size. The former results in significant solar energy loss, affecting the module's solar conversion efficiency; the latter, with the focused light spot on the solar cell, leads to excessive local energy concentration, causing excessive local current and severe heat generation, which can range from affecting photoelectric conversion efficiency to damaging the solar cell.
[0003] Currently, concentrating optical elements are typically mounted above solar cells to enhance the focusing effect of sunlight. However, in existing technologies, concentrating optical elements are mostly independent and separate, prepared individually and then glued onto the solar cells. This method has significant drawbacks: the adhesive ages over time, severely affecting light transmittance and shortening lifespan; furthermore, the adhesive connection has poor stability, making the concentrating optical elements prone to detachment under vibration, impact, or other external forces during module transportation and installation. Utility Model Content
[0004] In view of this, the present invention provides a concentrating solar cell module and a concentrating solar cell strip, which at least solves the problem of poor stability of concentrating optical elements in the prior art.
[0005] To achieve one, some, or all of the above objectives, or other objectives, the first aspect of this utility model provides a concentrating solar cell module, including a base, a packaging bracket, solar cells, and a concentrating element. The packaging bracket surrounds the base and extends upward relative to the base, forming a cavity with the base. The base has a first positive electrode contact and a first negative electrode contact. The solar cells are disposed within the cavity, with the positive electrode of the solar cells electrically connected to the first positive electrode contact and the negative electrode of the solar cells electrically connected to the first negative electrode contact. The concentrating element includes an integrally formed first concentrating part and a second concentrating part. The first concentrating part fills the remaining space within the cavity. The second concentrating part is disposed on the upper surface of the first concentrating part, and the projection of the bottom of the second concentrating part onto the base covers the projection of the light-receiving surface of the solar cells onto the base, and falls entirely within the projection range of the top of the first concentrating part onto the base.
[0006] Furthermore, the second light-concentrating part includes a top incident surface and a peripheral surface, and the area of the top incident surface is larger than the bottom area of the second light-concentrating part.
[0007] Furthermore, the shape of the top incident surface is selected from one of a plane, a sphere, or a freeform surface.
[0008] Furthermore, the peripheral surface is selected from one of a plane, a composite parabola, or a freeform surface.
[0009] Furthermore, the second light-concentrating part is a transparent solid structure formed by the top incident surface and the peripheral side surface.
[0010] Furthermore, the base includes an insulating portion that vertically penetrates the base, the insulating portion dividing the base into a first region and a second region that are mutually insulated, the first positive terminal being located in the first region and vertically penetrating the base, and the first negative terminal being located in the second region and vertically penetrating the base.
[0011] Furthermore, the solar cell is disposed on the upper surface of the first region of the base, the positive electrode of the solar cell is electrically connected to the first positive electrode contact by welding, and the negative electrode of the solar cell is electrically connected to the first negative electrode contact by bonding wire.
[0012] The second aspect of this utility model provides a concentrating solar cell strip, including a circuit board strip and a plurality of the above-mentioned concentrating solar cell modules, wherein each of the concentrating solar cell modules is arranged at intervals on the upper surface of the circuit board strip, and each of the concentrating solar cell modules is electrically connected to the circuit board strip.
[0013] Furthermore, the circuit board strip includes a substrate, a first insulating layer, a circuit layer, and a second insulating layer stacked from bottom to top. The circuit layer includes lead-out contacts, a plurality of contact groups, and leads. The contact groups include a second positive contact and a second negative contact. The lead-out contacts are disposed at both ends of the circuit layer. The plurality of contact groups are spaced apart in the middle of the circuit layer, and adjacent contact groups are connected by the leads. The second insulating layer covers the leads but does not cover the lead-out contacts and each contact group. The second positive contact is electrically connected to the first positive contact of the concentrating solar cell module, and the second negative contact is electrically connected to the first negative contact of the concentrating solar cell module.
[0014] Furthermore, each of the concentrating solar cell modules is arranged in a single row at intervals along the length of the circuit board strip, and the projection of each of the concentrating solar cell modules on the circuit board strip is completely within the outline of the circuit board strip.
[0015] Implementing the embodiments of this utility model will have the following beneficial effects:
[0016] This invention discloses a concentrating solar cell module and concentrating solar cell strip, which are integrally molded with a concentrating element. The first concentrating part fills the cavity formed by the encapsulation bracket and the base, forming a stable bond with them, thus solving the problem of the concentrating element easily detaching. Furthermore, the integral molding design avoids the use of additional adhesives, preventing the decrease in light transmittance caused by adhesive aging and extending the service life of the concentrating solar cell module. Simultaneously, the concentrating element completely seals the solar cell, preventing the intrusion of moisture and dust, improving the stability and lifespan of the solar cell. In addition, by setting the bottom of the second concentrating part on the base to completely cover the projection of the light-receiving surface of the solar cell on the base, and with the bottom of the second concentrating part being smaller than the top of the first concentrating part, it ensures that the concentrated light reaches the light-receiving surface of the solar cell to the maximum extent, reducing light loss. Moreover, the integral molding process of the concentrating element also reduces the step of separately installing the concentrating optical element, lowering production complexity and cost, making it suitable for mass production. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] in:
[0019] Figure 1This is a schematic diagram of the structure of a concentrated solar cell module in one embodiment;
[0020] Figure 2 This is a schematic diagram of the mold structure for the fabrication process of the focusing element in one embodiment;
[0021] Figure 3 This is a schematic diagram of the concentrating solar cell module in yet another embodiment;
[0022] Figure 4 This is a schematic diagram of the concentrating solar cell module in yet another embodiment;
[0023] Figure 5 This is a schematic diagram of the concentrating solar cell module in yet another embodiment;
[0024] Figure 6 This is a schematic diagram of the concentrating solar cell module in yet another embodiment;
[0025] Figure 7 This is a top view of a concentrated solar cell module without a concentrating element in one embodiment.
[0026] Figure 8 This is a schematic diagram of the structure of a concentrating solar cell strip in one embodiment;
[0027] Figure 9 This is a schematic cross-sectional view of a circuit board strip in one embodiment;
[0028] Figure 10 This is a top view of the circuit board strip in one embodiment.
[0029] Explanation of the attached drawing numbers:
[0030] 100: Concentrated solar cell module;
[0031] 1: Base; 11: First positive contact; 12: First negative contact; 13: Insulation part;
[0032] 2: Packaging bracket; 3: Solar cell; 31: Positive electrode; 32: Negative electrode;
[0033] 4: Concentrating element; 41: First concentrating part; 42: Second concentrating part; 421: Incident surface; 422: Peripheral surface;
[0034] 5: Mold; 51: Injection port; 6: Bonding line; 7: Mounting base plate; 8: Fastener;
[0035] 200: Circuit board strip;
[0036] 201: Substrate; 202: First insulating layer; 203: Circuit layer; 2031: Lead-out contact; 2032: Contact group; 2032a: Second positive contact; 2032b: Second negative contact; 2033: Lead wire; 204:
[0037] Second insulating layer. Detailed Implementation
[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.
[0039] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0040] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0041] Reference Figure 1This utility model discloses a concentrating solar cell module 100, including a base 1, a packaging bracket 2, solar cells 3, and a concentrating element 4. The packaging bracket 2 surrounds the base 1 and extends upward relative to the base 1, forming a cavity with the base 1. The base 1 has a first positive electrode contact 11 and a first negative electrode contact 12. The solar cells 3 are disposed within the cavity, and the positive electrode 31 of the solar cells 3 is electrically connected to the first positive electrode contact 11. The negative electrode 32 of the solar cell 3 is electrically connected to the first negative electrode contact 12. The light-concentrating element 4 includes an integrally formed first light-concentrating part 41 and a second light-concentrating part 42. The first light-concentrating part 41 fills the remaining space in the cavity. The second light-concentrating part 42 is disposed on the upper surface of the first light-concentrating part 41. The projection of the bottom of the second light-concentrating part 42 on the base 1 covers the projection of the light-receiving surface of the solar cell 3 on the base 1, and falls entirely within the projection range of the top of the first light-concentrating part 41 on the base 1.
[0042] In this embodiment, the encapsulation bracket 2 and the base 1 enclose a cavity with an open top. The depth of the cavity is greater than the thickness of the solar cell 3, and the area of the top opening of the encapsulation bracket is greater than the area of the solar cell 3, which facilitates the insertion of the solar cell 3 through the top opening and the electrical connection during installation.
[0043] The concentrating element 4 is integrally molded using transparent optical materials (such as epoxy resin, silicone, etc.). The first concentrating part 41 and the second concentrating part 42 are integrally molded. The first concentrating part 41 is a block that fills the remaining space in the cavity, which on the one hand fixes and seals the solar cell 3 to prevent it from being affected by the external environment; on the other hand, it also gives the concentrating element 4 a strong adhesive base, and the bottom is firmly bonded to the cavity of the encapsulation bracket 2 and the base 1, making it difficult to fall off.
[0044] The second concentrator 42 is used to concentrate light, and the incident light shines from the bottom of the second concentrator 42 onto the light-receiving surface of the solar cell 3. By setting the bottom of the second concentrator 42 on the base 1 to completely cover the orthogonal projection of the light-receiving surface of the solar cell 3 on the base 1, and by setting the bottom of the second concentrator 42 to be smaller than the top of the first concentrator 41, it is ensured that the concentrated light shines onto the light-receiving surface of the solar cell 3 as much as possible, thereby reducing light loss.
[0045] For example, refer to Figure 2 The preparation method of the focusing element 4 can be carried out by the following steps:
[0046] S1: Based on the pre-designed structure of the second focusing part 42 of the focusing element 4 and the structure of the encapsulation bracket 2, a matching injection mold 5 is designed and manufactured, wherein the mold 5 has an injection port 51. The mold 5 can be made of plastic, silicone, epoxy resin, etc., and can be a soft mold or a hard mold. The surface of the mold cavity needs to be cleaned, and a release agent is evenly sprayed onto the surface of the mold cavity. The release agent can be selected from organofluorine compounds, siloxane compounds, silicone oil-based, phenolic resin-based, wax (oil)-based release agents, industrial petrolatum, paraffin wax, sulfonated vegetable oil, etc. It is understood that the shape of the corresponding injection mold 5 will change accordingly depending on the structure of the focusing element 4.
[0047] S2: Set the mold 5 outside the encapsulation bracket 2 on which the solar cells have been installed, and fix the mold 5 on the pre-prepared mounting base plate 7 by the fastener 8. Inject the pre-selected secondary optical raw material liquid into the mold 5 through the injection port 51 to fill the cavity of the encapsulation bracket 2 and the cavity of the mold 5. The secondary optical raw material liquid includes, for example, a mixture of epoxy resin and curing agent, or a mixture of silicone and curing agent.
[0048] S3: Curing is performed at the curing temperature corresponding to the secondary optical raw material liquid. After curing and molding, the mold is cooled and demolded, and the mold 5 is removed to prepare the light-concentrating element 4. The first light-concentrating part 41 located in the cavity of the packaging bracket 2 and the second light-concentrating part 42 outside the packaging bracket 2 are integrally formed.
[0049] In this embodiment, the first concentrating part 41 of the concentrating element 4 fills the cavity 5 and forms a stable bond with the encapsulation bracket 2 and the base 1, solving the problem of the concentrating element easily falling off. The one-piece molding design avoids the use of additional adhesives for bonding and also avoids the problem of reduced light transmittance due to adhesive aging, thus extending the service life of the concentrating solar cell module. Furthermore, the concentrating element 4 completely seals the solar cell 3, preventing the intrusion of moisture, dust, etc., and improving the stability and service life of the solar cell 3. In addition, the one-piece molding process of the concentrating element 4 also reduces the steps of separately installing concentrating optical elements, reducing production complexity and cost, and making it suitable for mass production.
[0050] In one specific embodiment, refer to Figure 1 as well as Figures 3-6 The second light-concentrating part 42 includes a top incident surface 421 and a peripheral surface 422, and the area of the top incident surface 421 is larger than the bottom area of the second light-concentrating part 42.
[0051] In this embodiment, the top incident surface 421 is used to receive external light (such as the light emitted from a Fresnel lens). By designing the area of the top incident surface 421 to be larger than the bottom area, the second light-gathering part 42 can receive a wider range of incident light, thus expanding the light-gathering range.
[0052] Figures 3-6 The straight line with an arrow indicates the direction of light propagation. Light rays incident from the top incident surface 421 enter the interior of the concentrator element 4, and after at least one reflection by the peripheral surface 422, illuminate the light-receiving surface of the solar cell 3. The peripheral surface 422 can guide the incident light rays, causing them to converge towards the bottom through inward reflection, gradually compressing and focusing a large range of light rays onto the light-receiving surface of the solar cell 3. In this embodiment, the concentrator element 4 is made of transparent optical materials such as epoxy resin and silicone (refractive index 1.4-1.6), whose refractive index is significantly greater than that of air (approximately 1.0). When light rays strike the peripheral surface 422 from inside the concentrator element 4 at an angle of incidence greater than the critical angle, total internal reflection is triggered—the light rays do not refract out of the concentrator element, but are all reflected back into the concentrator element by the peripheral surface 422.
[0053] Since the bottom area of the second concentrator 42 is small and falls completely within the top area of the first concentrator 41, the converged light can be smoothly transmitted to the solar cell 3 through the first concentrator 41, avoiding energy loss due to light diffusion and improving the overall photoelectric conversion efficiency.
[0054] In a preferred embodiment, the bottom area of the second light-concentrating part 42 is equal to the area of the light-receiving surface of the solar cell 3, so that the light can be concentrated only on the effective light-receiving surface of the solar cell 3, reducing light loss.
[0055] In some specific embodiments, reference is made to Figure 1 as well as Figures 3-6 The shape of the top incident surface 421 is selected from one of the following: a plane, a sphere, or a freeform surface.
[0056] In some specific embodiments, reference is made to Figure 1 as well as Figures 3-6 The peripheral surface 422 is selected from one of the following: a plane, a composite parabola, and a freeform surface.
[0057] The specific dimensional features of the top incident surface 421 and the peripheral surface 422 of the concentrating element 4 can be simulated by existing optical simulation software based on the structure of the specific photovoltaic panel, so as to maximize the convergence of the light transmitted from the Fresnel lens onto the light-receiving surface of the solar cell 3.
[0058] In one specific embodiment, the second light-concentrating part 42 is a transparent solid structure enclosed by the top incident surface 421 and the peripheral side surface 422. The light-concentrating element 4 is a solid structure integrally molded from a transparent optical material (such as epoxy resin, silicone, etc.), and the top incident surface 421 and the peripheral side surface 422 together form the outer contour of the second light-concentrating part 42. This structure is easy to integrally mold by injection molding, and the bottom of the light-concentrating element 4 is firmly connected to the base 1, reducing the risk of falling off. At the same time, the process is simple and conducive to mass production.
[0059] In one specific embodiment, refer to Figure 1 and Figure 7 The base 1 includes an insulating portion 13 that extends vertically through the base. The insulating portion 13 divides the base into a first region and a second region that are mutually insulated. The first positive terminal 11 is located in the first region and extends vertically through the base 1, and the first negative terminal 12 is located in the second region and extends vertically through the base 1.
[0060] In this embodiment, the insulating part 13 can be made of insulating materials such as ceramic to block the current conduction between the first region 14 and the second region 15. The first positive electrode contact 11 can be formed entirely or partially by conductive materials such as metal in the first region 14, and similarly, the first negative electrode contact 12 can be formed entirely or partially by conductive materials such as metal in the second region 15. Through the structural design of vertically penetrating the base 1, the positive and negative electrodes of the solar cell 3 can be quickly and conveniently connected to the external circuit through these two contacts, eliminating the need for complex lead wiring and soldering operations after the concentrator 4 is installed. This avoids the risk of detachment caused by external force impact on the concentrator 4 due to cumbersome operations, simplifies the electrical connection path, reduces the risk of poor contact, and significantly improves the stability and assembly efficiency of the overall structure.
[0061] In one specific embodiment, refer to Figure 7 The solar cell 3 is disposed on the upper surface of the first region of the base 1. The positive electrode 31 of the solar cell 3 is electrically connected to the first positive electrode contact 11 by welding. The negative electrode 32 of the solar cell 3 is electrically connected to the first negative electrode contact 12 by bonding wire 6.
[0062] In this embodiment, the positive electrode 31 of the solar cell 3 is connected to the first positive electrode contact 11 by means such as laser welding. The negative electrode 32 of the solar cell 3 is connected to the first negative electrode contact 12 via bonding wires, which are made of metal wires with good conductivity and flexibility. No excess leads are exposed during the entire connection process, avoiding structural interference caused by exposed leads. This provides a regular space for the subsequent injection molding of the concentrator 4, allowing the first concentrating part 41 of the concentrator 4 to fill the cavity 5 more tightly, forming a gapless and firm bond with the encapsulation bracket 2 and the base 1. This further reduces the risk of the concentrator 4 falling off and extends the module's service life.
[0063] Reference Figure 8 This utility model provides a concentrating solar cell strip, including a circuit board strip 200 and the aforementioned concentrating solar cell modules 100. Each of the concentrating solar cell modules 100 is arranged at intervals on the upper surface of the circuit board strip 200, and each of the concentrating solar cell modules 100 is electrically connected to the circuit board strip 200.
[0064] In this embodiment of the invention, the circuit board 200 contains conductive lines for electrically connecting each concentrating solar cell module 100. Each concentrating solar cell module 100 is arranged in a single row along its length on the upper surface of the circuit board 200, with the spacing determined according to actual concentrating requirements, for example, several centimeters apart. Each concentrating solar cell module 100 and the circuit board 200 achieve a stable electrical connection through a simple structure. Specifically, the module can be welded to the corresponding conductive lines on the circuit board 200 via the first positive terminal 11 and the first negative terminal 12 on the module base 1. This eliminates the need for complex leads, avoiding contact or pulling of the concentrating elements during lead arrangement, thus reducing the risk of the concentrating elements falling off. It also makes the entire battery strip structure more compact, improving the overall reliability of the battery strip. Simultaneously, the compact structure reduces space occupation during transportation, lowering transportation and maintenance costs.
[0065] In one specific embodiment, refer to Figure 9 and Figure 10The circuit board 200 includes a substrate 201, a first insulating layer 202, a circuit layer 203, and a second insulating layer 204 stacked from bottom to top. The circuit layer 203 includes lead-out contacts 2031, a plurality of contact groups 2032, and leads 2033. The contact groups 2032 include a second positive contact 2032a and a second negative contact 2032b. The lead-out contacts 2031 are located at both ends of the circuit layer 203, and the plurality of contact groups 2032 are spaced apart. The middle part of the circuit layer 203 and adjacent contact groups 2032 are connected by the lead wire 2033; the second insulating layer 204 covers the lead wire 2033 but does not cover the lead-out contact 2031 and each of the contact groups 2032; the second positive contact 2032a is electrically connected to the first positive contact 11 of the concentrating solar cell module 100, and the second negative contact 2032b is electrically connected to the first negative contact 12 of the concentrating solar cell module 100.
[0066] In this embodiment, the substrate material includes, for example, epoxy resin fiberglass board, and the insulating layer material includes, for example, polyimide, epoxy resin, etc. The circuit layer 203 is formed by etching copper foil, and the lead-out contacts 2031 are used for connection with external circuits; the spacing of the contact group 2032 matches the arrangement spacing of the concentrating solar cell module 100, ensuring that the first positive and negative contacts of each concentrating solar cell module 100 can be connected to the corresponding second positive and negative contacts; the lead wires 2033 electrically connect adjacent contact groups 2032.
[0067] A conventional process is used to stack a substrate 201 and a first insulating layer 202. Then, on the first insulating layer 202, lead contacts 2031, contact groups 2032, and leads 2033 are formed according to a predetermined design circuit using processes such as photolithography and electroplating. Finally, a second insulating layer 204 is applied to the surface of the leads 2033 through processes such as coating and curing. The second insulating layer 204 uses the same or similar material as the first insulating layer 202, ensuring that the lead contacts 2031 and contact groups 2032 are exposed, facilitating subsequent electrical connections with other components. Concentrated solar cell modules 100 are sequentially placed on the corresponding contact groups 2032. The second positive electrode contact 2032a is electrically connected to the first positive electrode contact 11, and the second negative electrode contact 2032b is electrically connected to the first negative electrode contact 12, using conductive adhesive or reflow soldering techniques.
[0068] In one specific embodiment, refer to Figure 9Each of the concentrating solar cell modules 100 is arranged in a single row at intervals along the length of the circuit board 200, and the projection of each concentrating solar cell module 100 on the circuit board 200 is completely within the outline of the circuit board 200. The entire concentrating solar cell strip has a regular and stable structure, thereby reducing the risk of damage to the concentrating solar cell modules 100 due to collisions or compression during transportation and installation, and also reducing the risk of the concentrating element 4 being detached by external force.
[0069] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.
Claims
1. A concentrated solar cell module, characterized in that, The device includes a base, a packaging bracket, solar cells, and a concentrating element. The packaging bracket surrounds the base and extends upward relative to the base, forming a cavity with the base. The base has a first positive terminal and a first negative terminal. The solar cells are disposed within the cavity, with the positive terminal of the solar cells electrically connected to the first positive terminal and the negative terminal of the solar cells electrically connected to the first negative terminal. The concentrating element includes an integrally formed first concentrating part and a second concentrating part. The first concentrating part fills the remaining space within the cavity, and the second concentrating part is disposed on the upper surface of the first concentrating part. The projection of the bottom of the second concentrating part onto the base covers the projection of the light-receiving surface of the solar cells onto the base and falls entirely within the projection range of the top of the first concentrating part onto the base.
2. The concentrated solar cell module as described in claim 1, characterized in that, The second light-concentrating part includes a top incident surface and a peripheral surface, and the area of the top incident surface is larger than the bottom area of the second light-concentrating part.
3. The concentrated solar cell module as described in claim 2, characterized in that, The shape of the top incident surface is selected from one of the following: a plane, a sphere, or a freeform surface.
4. The concentrating solar cell module as described in claim 2, characterized in that, The peripheral surface is selected from one of the following: a plane, a composite parabola, or a freeform surface.
5. The concentrating solar cell module as described in claim 2, characterized in that, The second light-concentrating part is a transparent solid structure formed by the top incident surface and the peripheral side surface.
6. The concentrating solar cell module as described in claim 1, characterized in that, The base includes an insulating portion that extends vertically through the base, dividing the base into a first region and a second region that are mutually insulated. The first positive terminal is located in the first region and extends vertically through the base, and the first negative terminal is located in the second region and extends vertically through the base.
7. The concentrating solar cell module as described in claim 6, characterized in that, The solar cell is disposed on the upper surface of the first region of the base. The positive electrode of the solar cell is electrically connected to the first positive electrode contact by welding, and the negative electrode of the solar cell is electrically connected to the first negative electrode contact by bonding wire.
8. A concentrating solar cell strip, characterized in that, The circuit board includes a circuit board and a plurality of concentrated solar cell modules as described in any one of claims 1-7, wherein each of the concentrated solar cell modules is arranged at intervals on the upper surface of the circuit board and each of the concentrated solar cell modules is electrically connected to the circuit board.
9. The concentrating solar cell strip as described in claim 8, characterized in that, The circuit board strip includes a substrate, a first insulating layer, a circuit layer, and a second insulating layer stacked from bottom to top. The circuit layer includes lead-out contacts, a plurality of contact groups, and leads. The contact groups include a second positive contact and a second negative contact. The lead-out contacts are located at both ends of the circuit layer. The plurality of contact groups are spaced apart in the middle of the circuit layer, and adjacent contact groups are connected by the leads. The second insulating layer covers the leads but does not cover the lead-out contacts and each contact group. The second positive contact is electrically connected to the first positive contact of the concentrating solar cell module, and the second negative contact is electrically connected to the first negative contact of the concentrating solar cell module.
10. The concentrating solar cell strip as described in claim 8, characterized in that, Each of the concentrating solar cell modules is arranged in a single row at intervals along the length of the circuit board strip, and the projection of each of the concentrating solar cell modules on the circuit board strip is completely within the outline of the circuit board strip.