Solar light source imitating LED lamp bead and solar light source simulator thereof

Abstract

The invention discloses an imitated solar light source LED lamp bead and a solar light source simulator thereof. The imitated solar light source LED lamp bead comprises a substrate, a plurality of LED chips, packaging glue and fluorescent powder. The solar light source simulator comprises a plurality of simulated solar light source LED lamp beads which are spliced in an array mode. According to the invention, a plurality of LED chips are matched on each wave band, and a plurality of fluorescent powders are reasonably proportioned, so that the matching degree of the spectrum and the solar spectrum is high, and the spectrum is expanded to a 360-1300nm wave band range and is closer to the real solar spectrum. Compared with a conventional xenon lamp light source, the xenon lamp light source provided by the invention has the advantages of higher spectrum matching degree, low starting temperature, remarkable and better safety and longer service life; and a filtering structure does not need to be designed to filter some unnecessary peaks. Compared with an imitated solar light source for daily illumination, the imitated solar light source is wider in wave band range and suitable for the research and development and test fields of perovskite cells, laminated cells, silicon solar cells, organic cells, photocatalysis, photohydrolysis, photoreaction, material aging and the like.

Description

Technical Field

[0001] The invention relates to a sunlight-simulating light source LED lamp bead and a sunlight-simulating light source comprising the solar spectrum LED lamp bead. Background Art

[0002] Thin-film batteries are thin-film solar cells with a layered structure. They are a highly efficient energy product and have become a new trend in the development of the international photovoltaic market. Thin-film batteries or other types of solar cells must be tested for performance and standards before leaving the factory. The solar cell test system needs to use a specific artificial light source to illuminate the battery, and obtain the corresponding test value through the feedback of the battery performance.

[0003] At present, the traditional testing method is to use a xenon lamp (xenon arc lamp) as a sunlight simulator to test solar cells. A xenon lamp is a high-intensity gas discharge lamp that ionizes xenon gas and generates arc light through an instantaneous 20kV high-voltage pulse. After filtering the arc light, people get sunlight simulation light.

[0004] However, xenon lamps have the following defects as a sunlight-simulating light source: (1) The starting voltage of xenon lamps is as high as 20kV, which is dangerous and prone to safety accidents in laboratories. (2) The optical structure of xenon lamps is complex, and there are many far-deviating peaks in the spectrum of xenon lamps. Technicians need to design complex filter structures to filter out these peaks before they can be used to simulate sunlight. (3) The color temperature of xenon lamps is around 6000K, and the wavelength before 750nm is very similar to sunlight, but the wavelength after 750nm is poorly matched with sunlight.

[0005] There are also some LED lights that imitate the spectrum of sunlight on the market, but their uses are different from the above. They are used for reading lighting and other purposes, mainly for human eyes to see. The wavelength of light that human eyes can perceive is generally between 400nm and 700nm, so these LED lights can only imitate the spectrum of the visible light band; however, if such sunlight-imitation lighting is applied to the testing of solar cells, it is not suitable. Summary of the invention

[0006] In order to overcome the shortcomings of the prior art, one of the purposes of the present invention is to provide a solar-simulating LED lamp bead, and the second purpose is to provide a solar light source simulator including a solar-simulating LED lamp bead, which can solve the problems of poor safety, the need to match complex filtering structures, and poor matching with sunlight in the prior art of xenon lamps as solar simulation light sources.

[0007] The present invention is achieved through the following technical solutions:

[0008] A sunlight-simulating LED lamp bead comprises: a substrate, a plurality of LED chips, a packaging glue and a fluorescent powder; the LED chip is fixed on the substrate by bonding with the packaging glue, and the fluorescent powder is mixed in the packaging glue; the LED chip comprises: a first chip with a wavelength of 365-370nm, a second chip with a wavelength of 380-385nm; a third chip with a wavelength of 390-395nm; a fourth chip with a wavelength of 395-400nm, a fifth chip with a wavelength of 405-410nm, a sixth chip with a wavelength of 420-425nm, a seventh chip with a wavelength of 435-440nm, and a seventh chip with a wavelength of 450-460nm. chip, an eighth chip with a wavelength of 450-455nm, a ninth chip with a wavelength of 460-465nm, a tenth chip with a wavelength of 470-475nm, an eleventh chip with a wavelength of 700-748nm, a twelfth chip with a wavelength of 750-790nm, a thirteenth chip with a wavelength of 800-852nm, a fourteenth chip with a wavelength of 860-890nm, a fifteenth chip with a wavelength of 900-948nm, a sixteenth chip with a wavelength of 970-985nm, a seventeenth chip with a wavelength of 1000-1070nm, and an eighteenth chip with a wavelength of 1100-1300nm;

[0009] The phosphor includes a mixed first phosphor, a second phosphor and a third phosphor, the emission wavelength of the first phosphor is 510-530nm, the emission wavelength of the second phosphor is 480-500nm, and the emission wavelength of the third phosphor is 650-670nm; the ratio of the first phosphor, the second phosphor and the third phosphor is 85%: 10%: 5%; the weight proportion of the phosphor to the packaging glue is 7wt%.

[0010] Furthermore, the first phosphor is a green phosphor, the second phosphor is a cyan phosphor, and the third phosphor is a red phosphor.

[0011] Further, the number of the first chips is 3, the number of the second chips is 2, the number of the third chips is 2, the number of the fourth chips is 1, the number of the fifth chips is 3, the number of the sixth chips is 3, the number of the seventh chips is 6, the number of the eighth chips is 11, the number of the ninth chips is 9, the number of the tenth chips is 7, the number of the eleventh chips is 4, the number of the twelfth chips is 5, the number of the thirteenth chips is 8, the number of the fourteenth chips is 5, the number of the fifteenth chips is 5, the number of the sixteenth chips is 3, the number of the seventeenth chips is 13, and the number of the eighteenth chips is 10.

[0012] Furthermore, the LED chips include: a first chip string, a second chip string, a third chip string, a fourth chip string, a fifth chip string, a sixth chip string, a seventh chip string, an eighth chip string, a ninth chip string, and a tenth chip string connected in parallel; the first chip string includes: a ninth chip, a fourth chip, a first chip, an eighth chip, a seventeenth chip, a fourteenth chip, a seventeenth chip, a fourteenth chip, a tenth chip, and an eighteenth chip connected in series in sequence; the second chip string includes: an eighth chip, a thirteenth chip, a twelfth chip, a first chip, a ninth chip, a sixth chip, a seventh chip, a eighth chip, a ninth chip, and an eighteenth chip connected in series in sequence The third chip string includes the following connected in series: the fifteenth chip, the ninth chip, the seventeenth chip, the seventh chip, the fifth chip, the eleventh chip, the seventeenth chip, the ninth chip, the tenth chip, the eighteenth chip; the fourth chip string includes the following connected in series: the eighth chip, the fifteenth chip, the twelfth chip, the first chip, the seventh chip, the eleventh chip, the eighth chip, the fifteenth chip, the tenth chip, the eighteenth chip; the fifth chip string includes the following connected in series: the sixteenth chip, the ninth chip, the seventeenth chip, the fifth chip, the eleventh chip, the seventeenth chip, the ninth chip, the tenth chip, the eighteenth chip; chip, the seventh chip, the fifth chip, the twelfth chip, the fourteenth chip, the tenth chip, the tenth chip, the eighteenth chip; the sixth chip string includes the eighth chip, the seventeenth chip, the thirteenth chip, the second chip, the seventh chip, the eleventh chip, the sixth chip, the fifteenth chip, the seventeenth chip, the eighteenth chip connected in series in sequence; the seventh chip string includes the fourteenth chip, the ninth chip, the second chip, the seventh chip, the fifth chip, the twelfth chip, the seventeenth chip, the seventeenth chip, the tenth chip, the eighteenth chip connected in series in sequence; the eighth chip string includes the eighth chip, the seventeenth chip, the thirteenth chip, the second chip, the seventh chip, the fifth chip, the twelfth chip, the seventeenth chip, the seventeenth chip, the tenth chip, the eighteenth chip connected in series in sequence The following are the components of the first chip, the second chip, the third chip, the fourth chip, the eleventh chip, the sixth chip, the seventeenth chip, the seventeenth chip and the eighteenth chip; the ninth chip string includes the following connected in series in sequence: the seventeenth chip, the ninth chip, the thirteenth chip, the eighth chip, the eighth chip, the ninth chip, the fifteenth chip, the thirteenth chip, the tenth chip and the eighteenth chip; the tenth chip string includes the following connected in series in sequence: the eighth chip, the sixteenth chip, the thirteenth chip, the third chip, the ninth chip, the eighth chip, the eighth chip, the fourteenth chip, the thirteenth chip and the eighteenth chip.

[0013] Furthermore, the components and proportions of the packaging glue are: UC520: HR-660-2: B490A: A glue: B glue = 0.12: 0.0086: 0.012: 1: 1.

[0014] Furthermore, for the chip strings of the same group, the LED chips are connected in pairs by gold wire welding to achieve series connection.

[0015] Furthermore, the solar-imitation light source LED lamp bead further comprises: a lens, which is mounted upside down on the substrate to surround the LED chip.

[0016] Furthermore, the substrate is a latex material substrate.

[0017] A solar light source simulator comprises the solar light source imitating LED lamp beads, and a plurality of the solar light source imitating LED lamp beads are spliced ​​in an array.

[0018] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0019] The solar-imitation LED lamp beads provided by the present invention have multiple LED chips that cooperate in various bands, and multiple phosphors are reasonably proportioned. The light emitted by each LED chip in cooperation with the phosphors can achieve an effect similar to "carving" along the solar spectrum in each band. The spectrum has a high degree of matching with the solar spectrum, and extends to a band range of 360 to 1300 nm, which is closer to the real solar spectrum. The solar-imitation LED lamp beads provided by the present invention are easy to array and splice large-area light sources. They are used as solar simulation light sources in the performance test of solar cells, and the battery performance feedback obtained is more realistic.

[0020] Compared with previous xenon lamp light sources: (1) the present invention has a higher spectral matching degree, low starting temperature, low operating temperature, and significantly better safety; (2) the working life is longer, which can save costs and lamp replacement and calibration time; (3) because the LED optical structure is simpler, there is no need to design additional filtering structures to filter out some unnecessary peaks, and the operation is more direct and simple.

[0021] Compared with the solar-like light source used for daily lighting, the wavelength range of the present invention is wider and is suitable for research and development and testing fields such as perovskite cells, stacked cells, silicon solar cells, organic cells, photocatalysis, photohydrolysis, photoreaction, and material aging. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure shows a top view of the structure of the solar light source lamp bead of the present invention;

[0023] Figure 2 Shown is a spectrum diagram of the lamp bead of the present invention and sunlight.

[0024] In the figure: 10, substrate; 20, LED chip; 21, first chip string; 22, second chip string; 23, third chip string; 24, fourth chip string; 25, fifth chip string; 26, sixth chip string; 27, seventh chip string; 28, eighth chip string; 29, ninth chip string; 210, tenth chip string. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0026] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figure 1 As shown, the present invention discloses a solar-light-simulating LED lamp bead, comprising: a substrate 10 made of insulating material, a plurality of LED chips 20 for color display, packaging glue, and phosphor. The installation structure of the lamp bead is: the LED chip 20 is fixed on the substrate 10 by means of packaging glue, and the phosphor is mixed in the packaging glue.

[0030] The LED chips 20 are LED chips of various wavelength bands. The phosphors are prepared by mixing various phosphors.

[0031] Embodiment 1

[0032] The LED chips 20 include: a first chip with a wavelength of 365-370nm, a second chip with a wavelength of 380-385nm; a third chip with a wavelength of 390-395nm; a fourth chip with a wavelength of 395-400nm, a fifth chip with a wavelength of 405-410nm, a sixth chip with a wavelength of 420-425nm, a seventh chip with a wavelength of 435-440nm, an eighth chip with a wavelength of 450-455nm, a ninth chip with a wavelength of 460-465nm, and a The tenth chip has a wavelength of 470-475nm, the eleventh chip has a wavelength of 700-748nm, the twelfth chip has a wavelength of 750-790nm, the thirteenth chip has a wavelength of 800-852nm, the fourteenth chip has a wavelength of 860-890nm, the fifteenth chip has a wavelength of 900-948nm, the sixteenth chip has a wavelength of 970-985nm, the seventeenth chip has a wavelength of 1000-1070nm, and the eighteenth chip has a wavelength of 1100-1300nm.

[0033] The phosphor includes a first phosphor, a second phosphor and a third phosphor. The emission wavelength of the first phosphor is 510-530 nm, the emission wavelength of the second phosphor is 480-500 nm, and the emission wavelength of the third phosphor is 650-670 nm. The ratio of the first phosphor, the second phosphor and the third phosphor is 85%: 10%: 5%. The weight ratio of the phosphor to the packaging glue is 7 wt%. Specifically, the first phosphor is a green phosphor, the second phosphor is a cyan phosphor, and the third phosphor is a red phosphor.

[0034] More specifically, the number of first chips is 3, the number of second chips is 2, the number of third chips is 2, the number of fourth chips is 1, the number of fifth chips is 3, the number of sixth chips is 3, the number of seventh chips is 6, the number of eighth chips is 11, the number of ninth chips is 9, the number of tenth chips is 7, the number of eleventh chips is 4, the number of twelfth chips is 5, the number of thirteenth chips is 8, the number of fourteenth chips is 5, the number of fifteenth chips is 5, the number of sixteenth chips is 3, the number of seventeenth chips is 13, and the number of eighteenth chips is 10.

[0035] More specifically, the LED chip 20 of the present lamp bead adopts a circuit connection structure of ten series and ten parallels, which includes a first chip string 21, a second chip string 22, a third chip string 23, a fourth chip string 24, a fifth chip string 25, a sixth chip string 26, a seventh chip string 27, an eighth chip string 28, a ninth chip string 29 and a tenth chip string 210 connected in parallel.

[0036] Among them, the first chip string 21 includes the following chips connected in series in sequence: a ninth chip, a fourth chip, a first chip, an eighth chip, a seventeenth chip, a fourteenth chip, a seventeenth chip, a fourteenth chip, a tenth chip, and an eighteenth chip.

[0037] The second chip string 22 includes the following chips connected in series: an eighth chip, a thirteenth chip, a twelfth chip, a first chip, a ninth chip, a sixth chip, a thirteenth chip, a sixteenth chip, a thirteenth chip, and an eighteenth chip.

[0038] The third chip string 23 includes the following chips connected in series in sequence: a fifteenth chip, a ninth chip, a seventeenth chip, a seventh chip, a fifth chip, an eleventh chip, a seventeenth chip, a ninth chip, a tenth chip, and an eighteenth chip.

[0039] The fourth chip string 24 includes the following chips connected in series: an eighth chip, a fifteenth chip, a twelfth chip, a first chip, a seventh chip, an eleventh chip, an eighth chip, a fifteenth chip, a tenth chip, and an eighteenth chip.

[0040] The fifth chip string 25 includes the following chips connected in series in sequence: a sixteenth chip, a ninth chip, a seventeenth chip, a seventh chip, a fifth chip, a twelfth chip, a fourteenth chip, a tenth chip, a tenth chip, and an eighteenth chip.

[0041] The sixth chip string 26 includes the following chips connected in series: an eighth chip, a seventeenth chip, a thirteenth chip, a second chip, a seventh chip, an eleventh chip, a sixth chip, a fifteenth chip, a seventeenth chip, and an eighteenth chip.

[0042] The seventh chip string 27 includes the following chips connected in series in sequence: a fourteenth chip, a ninth chip, a second chip, a seventh chip, a fifth chip, a twelfth chip, a seventeenth chip, a tenth chip, and an eighteenth chip.

[0043] The eighth chip string 28 includes the following chips connected in series in sequence: an eighth chip, a seventeenth chip, a twelfth chip, a third chip, a seventh chip, an eleventh chip, a sixth chip, a seventeenth chip, a seventeenth chip, and an eighteenth chip.

[0044] The ninth chip string 29 includes the following chips connected in series in sequence: the seventeenth chip, the ninth chip, the thirteenth chip, the eighth chip, the eighth chip, the ninth chip, the fifteenth chip, the thirteenth chip, the tenth chip, and the eighteenth chip.

[0045] The tenth chip string 210 includes the eighth chip, the sixteenth chip, the thirteenth chip, the third chip, the ninth chip, the eighth chip, the eighth chip, the fourteenth chip, the thirteenth chip, and the eighteenth chip connected in series in sequence.

[0046] Specifically, the components and proportions of the packaging glue are UC520:HR-660-2:B490A:A glue:B glue=0.12:0.0086:0.012:1:1.

[0047] The solar-light-mimicking LED lamp beads provided by the present invention have a variety of LED chips 20 that are matched in various bands, and a variety of phosphors are reasonably proportioned. The light emitted by each LED chip 20 in cooperation with the phosphors can achieve an effect similar to "carving" along the solar spectrum in various bands (such as Figure 2 As shown, curve T1 is the spectrum of the scattered light of the lamp bead, and curve T2 is the solar spectrum of real sunlight. The spectrum matches the solar spectrum very well and extends to the band range of 360-1300nm, which is closer to the real solar spectrum. The solar light source LED lamp bead provided by the present invention is easy to array and splice a large area of ​​light source. It is used as a solar simulation light source in the performance test of solar cells, and the battery performance feedback obtained is more realistic.

[0048] Compared with previous xenon lamp light sources: (1) the present invention has a higher spectral matching degree, low starting temperature, low operating temperature, and significantly better safety; (2) the working life is longer, which can save costs and lamp replacement and calibration time; (3) because the LED optical structure is simpler, there is no need to design additional filtering structures to filter out some unnecessary peaks, and the operation is more direct and simple.

[0049] Compared with the solar-like light source used for daily lighting, the wavelength range of the present invention is wider and is suitable for research and development and testing fields such as perovskite cells, stacked cells, silicon solar cells, organic cells, photocatalysis, photohydrolysis, photoreaction, and material aging.

[0050] Preferably, for the same group of chip strings, the LED chips 20 are connected in pairs by welding with gold wires to achieve the series connection of the same chip string. Of course, the gold wires can be replaced by copper wires.

[0051] Preferably, the sunlight-simulating LED lamp bead further comprises a lens, which is mounted upside down on the substrate 10 so as to cover the outside of all LED chips 20 , and the light emitted by the LED is scattered out of the lamp bead after passing through the lens.

[0052] Preferably, the substrate 10 is made of latex material, which has insulating properties.

[0053] The present invention also discloses a solar light source simulator, including the above-mentioned solar light source imitation LED lamp beads, and multiple LED lamp beads are spliced ​​into a large-area light source array to simulate the solar light source. Any solar light source simulator that uses the same or substantially the same solar light source imitation LED lamp beads as the above-mentioned shall be within the protection scope of the present invention.

[0054] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A solar-light-imitation LED lamp bead, characterized in that: include: A substrate, a plurality of LED chips, a packaging adhesive and phosphors; the LED chips are bonded and fixed on the substrate by the packaging adhesive, and the phosphors are mixed in the packaging adhesive; The LED chips include: a first chip with a wavelength of 365-370nm, a second chip with a wavelength of 380-385nm; a third chip with a wavelength of 390-395nm; a fourth chip with a wavelength of 395-400nm, a fifth chip with a wavelength of 405-410nm, a sixth chip with a wavelength of 420-425nm, a seventh chip with a wavelength of 435-440nm, an eighth chip with a wavelength of 450-455nm, a ninth chip with a wavelength of 460-465nm, and a The tenth chip has a length of 470-475nm, the eleventh chip has a wavelength of 700-748nm, the twelfth chip has a wavelength of 750-790nm, the thirteenth chip has a wavelength of 800-852nm, the fourteenth chip has a wavelength of 860-890nm, the fifteenth chip has a wavelength of 900-948nm, the sixteenth chip has a wavelength of 970-985nm, the seventeenth chip has a wavelength of 1000-1070nm, and the eighteenth chip has a wavelength of 1100-1300nm; The phosphor includes a mixed first phosphor, a second phosphor and a third phosphor, the emission wavelength of the first phosphor is 510-530nm, the emission wavelength of the second phosphor is 480-500nm, and the emission wavelength of the third phosphor is 650-670nm; the ratio of the first phosphor, the second phosphor and the third phosphor is 85%: 10%: 5%; the weight proportion of the phosphor to the packaging glue is 7wt%.

2. The solar light source lamp bead according to claim 1, characterized in that: The first phosphor is a green phosphor, the second phosphor is a cyan phosphor, and the third phosphor is a red phosphor.

3. The solar-light-imitation LED lamp bead according to claim 1, characterized in that: The number of the first chips is 3, the number of the second chips is 2, the number of the third chips is 2, the number of the fourth chips is 1, the number of the fifth chips is 3, the number of the sixth chips is 3, the number of the seventh chips is 6, the number of the eighth chips is 11, the number of the ninth chips is 9, the number of the tenth chips is 7, the number of the eleventh chips is 4, the number of the twelfth chips is 5, the number of the thirteenth chips is 8, the number of the fourteenth chips is 5, the number of the fifteenth chips is 5, the number of the sixteenth chips is 3, the number of the seventeenth chips is 13, and the number of the eighteenth chips is 10.

4. The solar-light-imitation LED lamp bead according to claim 1, characterized in that: The LED chips include: a first chip string, a second chip string, a third chip string, a fourth chip string, a fifth chip string, a sixth chip string, a seventh chip string, an eighth chip string, a ninth chip string and a tenth chip string connected in parallel to each other; The first chip string includes: a ninth chip, a fourth chip, a first chip, an eighth chip, a seventeenth chip, a fourteenth chip, a seventeenth chip, a fourteenth chip, a tenth chip, and an eighteenth chip connected in series in sequence; The second chip string includes: an eighth chip, a thirteenth chip, a twelfth chip, a first chip, a ninth chip, a sixth chip, a thirteenth chip, a sixteenth chip, a thirteenth chip, and an eighteenth chip connected in series in sequence; The third chip string includes the following chips connected in series: a fifteenth chip, a ninth chip, a seventeenth chip, a seventh chip, a fifth chip, an eleventh chip, a seventeenth chip, a ninth chip, a tenth chip, and an eighteenth chip; The fourth chip string includes the following chips connected in series: an eighth chip, a fifteenth chip, a twelfth chip, a first chip, a seventh chip, an eleventh chip, an eighth chip, a fifteenth chip, a tenth chip, and an eighteenth chip; The fifth chip string includes: a sixteenth chip, a ninth chip, a seventeenth chip, a seventh chip, a fifth chip, a twelfth chip, a fourteenth chip, a tenth chip, a tenth chip, and an eighteenth chip connected in series in sequence; The sixth chip string includes the following chips connected in series: an eighth chip, a seventeenth chip, a thirteenth chip, a second chip, a seventh chip, an eleventh chip, a sixth chip, a fifteenth chip, a seventeenth chip, and an eighteenth chip; The seventh chip string includes: a fourteenth chip, a ninth chip, a second chip, a seventh chip, a fifth chip, a twelfth chip, a seventeenth chip, a tenth chip, and an eighteenth chip connected in series in sequence; The eighth chip string includes the following chips connected in series: an eighth chip, a seventeenth chip, a twelfth chip, a third chip, a seventh chip, an eleventh chip, a sixth chip, a seventeenth chip, a seventeenth chip, and an eighteenth chip; The ninth chip string includes: a seventeenth chip, a ninth chip, a thirteenth chip, an eighth chip, an eighth chip, a ninth chip, a fifteenth chip, a thirteenth chip, a tenth chip, and an eighteenth chip connected in series in sequence; The tenth chip string includes the following chips connected in series in sequence: an eighth chip, a sixteenth chip, a thirteenth chip, a third chip, a ninth chip, an eighth chip, an eighth chip, a fourteenth chip, a thirteenth chip, and an eighteenth chip.

5. The solar-light-imitation LED lamp bead according to claim 1, characterized in that: The components and proportions of the packaging glue are: UC520: HR-660-2: B490A: A glue: B glue = 0.12: 0.0086: 0.012: 1:

1.

6. The sunlight-simulating LED lamp bead as claimed in claim 4, characterized in that: For the chip strings of the same group, the LED chips are connected in pairs by gold wire welding to achieve series connection.

7. The solar-light-imitation LED lamp bead according to claim 1, characterized in that: The sunlight-simulating LED lamp bead further comprises: a lens, which is mounted upside down on the substrate to surround the LED chip.

8. The solar-light-imitation LED lamp bead according to claim 1, characterized in that: The substrate is a latex substrate.

9. A solar light source simulator, characterized in that: It comprises a plurality of solar-imitation LED lamp beads as claimed in any one of claims 1 to 8, wherein the plurality of solar-imitation LED lamp beads are array-joined.

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