Solar photovoltaic device simulator LED

Abstract

The utility model belongs to the technical field of LEDs, and particularly relates to a solar photovoltaic device simulator LED, which comprises a plurality of LED wafers, a support, silica gel and fluorescent glue, the support is provided with a bowl cup, a positive electrode and a negative electrode, the plurality of LED wafers are arranged in the bowl cup and are connected in series with the positive electrode and the negative electrode through gold wire bonding, and the fluorescent glue is coated on the LED wafers; and the plurality of LED wafers comprise a first LED wafer with the wavelength of 310 to 315 nm, a second LED wafer with the wavelength of 350 to 370 nm, a third LED wafer with the wavelength of 400 to 410 nm, a fourth LED wafer with the wavelength of 440 to 445 nm, a fifth LED wafer with the wavelength of 450 to 455 nm, a sixth LED wafer with the wavelength of 465 to 470 nm and a seventh LED wafer with the wavelength of 475 to 485 nm. The device can be safely and effectively applied to a solar photovoltaic device simulator, and the output utilization rate of photovoltaic products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED, in particular to a solar photovoltaic device simulator LED. Background Art

[0002] The mainstream form of solar photovoltaic (PV) device simulator light sources at present is a combination of more than a dozen light sources. Such solar photovoltaic device simulator light sources will have the problem of spot processing, which will cause waste of lamp structure design and increase costs. In addition, this combination will also have spectral instability, resulting in the inability to accurately simulate the sunlight AM1.5G spectrum. Utility Model Content

[0003] The purpose of the utility model is to provide a solar photovoltaic device simulator LED, which can at least solve one of the problems existing in the above-mentioned prior art, so as to achieve high color rendering index and high SSI spectrum similarity, and the S / P ratio and M / P ratio parameters are higher than those of sunlight with the same color temperature, and the simulated sunlight AM1.5G spectrum reaches the A+ standard, and can be applied to the fields of solar photovoltaic device simulators and healthy lighting.

[0004] The utility model adopts the following technical solutions to solve the above technical problems: Provide a solar photovoltaic device simulator LED, including multiple LED chips, a bracket, silica gel and fluorescent glue, the bracket has a bowl and positive and negative electrodes, multiple LED chips are arranged in the bowl, and each LED chip is connected in series with the positive and negative electrodes through gold wire bonding, and the fluorescent glue is coated on each LED chip;

[0005] The plurality of LED chips include a first LED chip with a peak wavelength of 310-315nm, a second LED chip with a peak wavelength of 350-370nm, a third LED chip with a peak wavelength of 400-410nm, a fourth LED chip with a main wavelength of 440-445nm, and a solar photovoltaic device simulator LED with a main wavelength of 450-455nm. The LED chips are characterized by comprising a plurality of LED chips, a bracket, silica gel and fluorescent glue, wherein the bracket has a bowl and positive and negative electrodes, and the plurality of LED chips are arranged in the bowl, and each LED chip is connected in series with the positive and negative electrodes by gold wire bonding, and the fluorescent glue is coated on each LED chip;

[0006] Among them, the multiple LED chips include a first LED chip with a peak wavelength of 310-315nm, a second LED chip with a peak wavelength of 350-370nm, a third LED chip with a peak wavelength of 400-410nm, a fourth LED chip with a main wavelength of 440-445nm, a fifth LED chip with a main wavelength of 450-455nm, a sixth LED chip with a main wavelength of 465-470nm and a seventh LED chip with a main wavelength of 475-485nm.

[0007] The solar photovoltaic device simulator LED of the utility model can be safely and effectively applied to a solar photovoltaic (PV) device simulator to improve the output utilization rate of photovoltaic products.

[0008] Optionally, an area ratio of the first LED chip, the second LED chip, the third LED chip, the fourth LED chip, the fifth LED chip, the sixth LED chip, and the seventh LED chip is 1:1:1.1:1:1:1.

[0009] Optionally, the quantity ratio of the first LED chip, the second LED chip, the third LED chip, the fourth LED chip, the fifth LED chip, the sixth LED chip, and the seventh LED chip is 1:1:1.2:2:2:1.

[0010] Optionally, the bowl has a left installation area and a right installation area, the left installation area is provided with the first LED chip, the second LED chip, the fifth LED chip, the sixth LED chip and the seventh LED chip, and the right installation area is provided with the third LED chip, the fourth LED chip, the fifth LED chip and the sixth LED chip.

[0011] Optionally, the left mounting area is provided with two columns of the LED chips, the left column includes one of the first LED chips, and the right column includes one of the fifth LED chips, one of the seventh LED chips, one of the second LED chips, and one of the sixth LED chips;

[0012] The right mounting area is provided with the LED chips on both sides, the left column includes a sixth LED chip, a fourth LED chip, a fifth LED chip and a fourth LED chip, and the right column includes a third LED chip.

[0013] Optionally, the top edge of the bowl is chamfered.

[0014] Compared with the prior art, the solar photovoltaic device simulator LED of the utility model has at least the following beneficial effects: the light color quality of the solar photovoltaic device simulator LED satisfies Ra>98, R1-R15>90, Rg>98, Rf>95, S / P ratio and M / Pratio are higher than sunlight with the same color temperature, the color temperature satisfies the specified chromaticity standard 603 coordinates, the chromaticity coordinates meet the 3-order color tolerance chromaticity standard, the SSI (300-830) coefficient of similarity with sunlight 6000K is >93%, the SSI (350-830) coefficient of similarity with sunlight 6000K is >93%, and it meets the IEC-60904-2020 standard and complies with the sunlight AM1.5G spectrum A+ standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the LED structure of a solar photovoltaic device simulator provided by an embodiment of the utility model.

[0016] Figure 2 It is a cross-sectional view of a solar photovoltaic device simulator LED provided in an embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the welding wires of the solar photovoltaic device simulator LED provided in the embodiment of the utility model.

[0018] Figure 4 It is a light emitting spectrum curve diagram of the solar photovoltaic device simulator LED provided in the embodiment of the utility model.

[0019] Figure 5 This is a spectrum similarity calculation diagram between a solar photovoltaic device simulator LED and a 6000K SSI provided in an embodiment of the utility model.

[0020] Figure 6 It is a SSI spectrum similarity calculation diagram of a solar photovoltaic device simulator LED provided in an embodiment of the utility model.

[0021] Figure 7 This is a test report of the solar photovoltaic device simulator LED provided by the embodiment of the utility model.

[0022] Figure 8 It is the required index of the chromaticity landing point bin diagram of the solar photovoltaic device simulator LED provided by the embodiment of the utility model.

[0023] Fig. 9 The mainstream form of the solar photovoltaic device simulator LED provided by the embodiment of the utility model is a spectrum diagram of a dozen light source combinations.

[0024] Reference numerals:

[0025] 1—first LED chip 1 2—second LED chip 2 3—third LED chip 3

[0026] 4—Fourth LED chip 4 5—Fifth LED chip 5 6—Sixth LED chip 6

[0027] 7—seventh LED chip 7 16—bowl 16 17—bracket 17

[0028] 18—Fluorescent glue 18. DETAILED DESCRIPTION

[0029] The following is combined with Figures 1 to 9 The technical solution of the utility model is further described in detail. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. Although this specification is described according to the implementation mode, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The various embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0030] like Figures 1-2 As shown, the embodiment of the utility model provides a solar photovoltaic device simulator LED, including multiple LED chips, a bracket 17, silica gel and fluorescent glue 18. The fluorescent glue 18 includes blue powder, green powder, red powder and infrared fluorescent powder. The bracket 17 has a bowl 16 and positive and negative electrodes. The multiple LED chips are arranged in the bowl 16, and each LED chip is connected in series with the positive and negative electrodes through gold wire bonding, and the fluorescent glue 18 is coated on each LED chip.

[0031] Among them, the multiple LED chips include a first LED chip 1 with a peak wavelength of 310-315nm, a second LED chip 2 with a peak wavelength of 350-370nm, a third LED chip 3 with a peak wavelength of 400-410nm, a fourth LED chip 4 with a main wavelength of 440-445nm, a fifth LED chip 5 with a main wavelength of 450-455nm, a sixth LED chip 6 with a main wavelength of 465-470nm and a seventh LED chip 7 with a main wavelength of 475-485nm.

[0032] The light color quality of the solar photovoltaic device simulator LED of the utility model satisfies Ra>98, R1-R15>90, Rg>98, Rf>95, the S / P ratio and M / P ratio are higher than those of sunlight with the same color temperature, the color temperature meets the specified chromaticity standard 603 coordinates, the chromaticity coordinates meet the 3-order color tolerance chromaticity standard, the SSI (300-830) coefficient of similarity with sunlight 6000K is>93%, the SSI (350-830) coefficient of similarity with sunlight 6000K is>93%, and it meets the IEC-60904-2020 standard and meets the sunlight AM1.5G spectrum A+ standard.

[0033] The solar photovoltaic device simulator LED of the utility model can be safely and effectively applied to a solar photovoltaic (PV) device simulator to improve the output utilization rate of photovoltaic products.

[0034] It should be noted that the blue light hazard efficiency K B，V To calculate, that is, the blue light hazard weighted radiance L B The ratio of the corresponding photometric value is calculated as:

[0035]

[0036] Among them, K m =683lm / W, V(λ) is the spectral luminous efficiency (or visibility function), and B(λ) is the blue light hazard weighting function. K B，V Characterizes the relative amount of blue light components in visible radiation. When the brightness of lighting products is the same, K B，V The higher it is, the more likely the light source is to harm the retina.

[0037] Refer to the EC-60904-2020 standard solar simulator classification standards, as shown in Table 1:

[0038]

[0039] Table 1

[0040] The calculation results of the present invention are shown in Table 2 below:

[0041]

[0042] Table 2

[0043] In another embodiment of the utility model, the area ratio of the first LED chip 1, the second LED chip 2, the third LED chip 3, the fourth LED chip 4, the fifth LED chip 5, the sixth LED chip 6, and the seventh LED chip 7 is 1:1:1.1:1:1:1.

[0044] In another embodiment of the utility model, the quantity ratio of the first LED chip 1, the second LED chip 2, the third LED chip 3, the fourth LED chip 4, the fifth LED chip 5, the sixth LED chip 6, and the seventh LED chip 7 is 1:1:1.2:2:2:1.

[0045] In another embodiment of the utility model, the fluorescent glue 18 is formed by preparing a 6500K fluorescent glue solution, which is a mixture of glue and blue powder with an emission wavelength of 470-485nm, green powder with an emission wavelength of 530-540nm, red powder with an emission wavelength of 650-660nm, infrared fluorescent powder with an emission wavelength of 725-735nm, infrared fluorescent powder with an emission wavelength of 795-805nm, infrared fluorescent powder with an emission wavelength of 880-900nm, infrared fluorescent powder with an emission wavelength of 1010-1030nm and infrared fluorescent powder with an emission wavelength of 1140-1160nm.

[0046] In another embodiment of the utility model, the 6500K fluorescent glue solution is prepared by glue: blue powder with an emission wavelength of 480nm: green powder with an emission wavelength of 530nm: fluorescent powder with an emission wavelength of 650nm: infrared fluorescent powder with an emission wavelength of 730nm: infrared fluorescent powder with an emission wavelength of 800nm: infrared fluorescent powder with an emission wavelength of 890nm: infrared fluorescent powder with an emission wavelength of 1024nm: infrared fluorescent powder with an emission wavelength of 1150nm in a ratio of 3: (0.05-0.15): (0.4-0.6): (0.12-0.16): (0.9-1.1): (0.9-1.1): (0.9-1.1): (1.5-1.8): (1.5-1.8). Specifically, the 6500K fluorescent glue solution is made of glue: blue powder with an emission wavelength of 480nm: green powder with an emission wavelength of 530nm: phosphor with an emission wavelength of 650nm: infrared phosphor with an emission wavelength of 730nm: infrared phosphor with an emission wavelength of 800nm: infrared phosphor with an emission wavelength of 890nm: infrared phosphor with an emission wavelength of 1024nm: infrared phosphor with an emission wavelength of 1150nm = 3: 0.05: 0.4: 0.12: 0.9: 0.9: 0.9: 1.5: 1.5, or = 3: 0.15: 0.6: 0.16: 1.1: 1.1: 1.1: 1.8: 1.8, or = 3: 0.07: 0.5: 0.14: 1: 1: 1: 1.7: 1.6.

[0047] In another embodiment of the utility model, the bowl has a left installation area and a right installation area, the left installation area is provided with the first LED chip, the second LED chip, the fifth LED chip, the sixth LED chip and the seventh LED chip, and the right installation area is provided with the third LED chip, the fourth LED chip, the fifth LED chip and the sixth LED chip. By arranging the LED chips of each specific wavelength in this partition, it is beneficial for the LED of the utility model to have a similarity coefficient of SSI (300-830) > 93% with sunlight 6000K, a similarity coefficient of SSI (350-830) > 93% with sunlight 6000K, and meet the IEC-60904-2020 standard and the sunlight AM1.5G spectrum A+ standard.

[0048] Specifically, the left mounting area is provided with two columns of the LED chips, the left column includes one of the first LED chips, and the right column includes one of the fifth LED chips, one of the seventh LED chips, one of the second LED chips, and one of the sixth LED chips. The right mounting area is provided with two sides of the LED chips, the left column includes one of the sixth LED chips, one of the fourth LED chips, one of the fifth LED chips, and one of the fourth LED chips, and the right column includes one of the third LED chips.

[0049] Furthermore, the top edge of the bowl is chamfered, which can improve the light effect of the LED light source.

[0050] Preferably, the blue powder with an emission wavelength of 470-485 nm is Lu3Al5O 12 :Ce 3+ Ingredients: The green powder having an emission wavelength of 530-540 nm is Lu3Al5O 12 :Ce 3+ The red powder with an emission wavelength of 650-660nm is CaAlSiN3:Eu; the infrared phosphor with an emission wavelength of 725-735nm is Ga4GeO8:Cr 3+ composition, and a half-wave width of 120-130nm; the infrared phosphor with an emission wavelength of 795-805nm is Ga4GeO8:Cr 3+ The half-wave width can be 140nm, 150nm or 160nm; the infrared phosphor with an emission wavelength of 880-900nm is Ga4GeO8:Cr 3+ The half-wave width can be 140nm, 150nm or 160nm; the infrared phosphor with an emission wavelength of 1010-1030nm is Ga4GeO8:Cr 3+The half-wave width can be 160nm, 170nm or 180nm; the infrared phosphor with an emission wavelength of 1140-1160nm is Ga4GeO8:Cr 3+ Component, half-wave width is 140nm, 150nm or 160nm.

[0051] Through the above structural design and configuration, the light color quality of the LED light source of the solar light device simulator of the utility model embodiment satisfies the spectral energy ratio of: Ф e (300-470nm): Ф e (470-561nm): Ф e (561-657nm): Ф e (657-772nm): Ф e (772-919nm): Ф e (919-1200nm) = (15%-16%): (17.5%-18.5%): (16.5%-17.5%): (14.8%-16%): (17.8%-18.3%): (15.7%-16.1%). This is OK, meeting the IEC-60904-2020 standard and complying with the sunlight AM1.5G spectrum A+ standard.

[0052] At the same time, the light color quality of the solar light device simulator LED light source of the embodiment of the utility model also meets the following relative spectral heights: 500-850nm≥0.45; 850-1200nm≥0.2; the peak wavelength is 480-490nm.

[0053] The utility model also provides a method for preparing a solar photovoltaic device simulator LED, comprising the following steps:

[0054] Step S100: The first LED chip 1, the second LED chip 2, the third LED chip 3, the fourth LED chip 4, the fifth LED chip 5, the sixth LED chip 6 and the seventh LED chip 7 are arranged in the bowl 16, and fixed on the bracket 17 by a die bonding machine through insulating glue or silver glue, and baked in an oven at 150-160° C. for 2 h±10 min after the die bonding is completed, so that the first LED chip 1, the second LED chip 2, the third LED chip 3, the fourth LED chip 4, the fifth LED chip 5, the sixth LED chip 6 and the seventh LED chip 7 are completely fixed in the bowl 16;

[0055] Step S200: connecting the first LED chip 1, the second LED chip 2, the third LED chip 3, the fourth LED chip 4, the fifth LED chip 5, the sixth LED chip 6 and the seventh LED chip 7 to the positive and negative electrodes by gold wire bonding using a gold wire bonding machine;

[0056] Step S300: preparing a fluorescent glue solution, wherein the fluorescent glue solution is a mixture of glue and blue powder, green powder, red powder and infrared fluorescent powder;

[0057] Step S400: pour the prepared fluorescent glue solution into the glue barrel of the glue dispensing machine. After the glue and bubbles are discharged, the fluorescent glue solution is dispensed into the bowl 16 according to the color parameter requirements. After the dispensing is completed, it is baked at 80℃ / 0.5H+160℃ / 4H.

[0058] Step S500: After the baked LED is threshed, it is spectroscopically tested according to the given color parameters, so that the LED light color quality formed in the bowl cup 16 satisfies Ra>98, R1-R15>90, Rg>98, Rf>95, S / P ratio and M / Pratio are higher than the sunlight with the same color temperature, the color temperature meets the specified chromaticity standard 603 coordinates, the chromaticity coordinates meet the 3-order color tolerance chromaticity standard, the SSI (300-830) coefficient of similarity with sunlight 6000K is>93%, the SSI (350-830) coefficient of similarity with sunlight 6000K is>93%, and it meets the IEC-60904-2020 standard and meets the sunlight AM1.5G spectrum A+ standard.

[0059] Furthermore, the solar photovoltaic device simulator LED produced by the above-mentioned preparation method of this embodiment can be reflected according to the following four tables compared with sunlight.

[0060] Among them, Table 3 is a comparison table of S / P ratio and M / P ratio of the solar photovoltaic device simulator LED and sunlight 6000K provided in the embodiment of the utility model.

[0061]

[0062] Table 3

[0063] Among them, Table 4 is the blue light hazard efficiency K of the solar photovoltaic device simulator LED and sunlight 6000K provided by the embodiment of the utility model B，V Comparison table.

[0064] project <![CDATA[K B，V ]]> 6000K sunlight 0.00091431 The utility model 0.000914784 <![CDATA[Comparison (K B，V(本实用新型) / K B，V(6000Ksunlight )]]> 100.05％

[0065] Table 4

[0066] Among them, Table 5 is a spectral parameter table of the solar photovoltaic device simulator LED provided in the embodiment of the utility model.

[0067]

[0068]

[0069] Table 5

[0070] Furthermore, after testing the solar photovoltaic device simulator LED of the embodiment of the utility model, the photobiological hazard type test (IECIEC 62471:2006) results can be shown in Table 6 below:

[0071]

[0072] Table 6

[0073] It can be seen that the solar photovoltaic device simulator LED provided by the embodiment of the utility model has at least the following beneficial effects:

[0074] 1. The parameters of S / P ratio (2.36) and M / P ratio (1.056) are both greater than or equal to the same color temperature sunlight with the same spectrum [same sunlight S / P ratio (2.36) and M / P ratio (1.043)], which makes people feel comfortable, clear vision, and soft light beautiful visual experience;

[0075] 2. SSI (300-830nm)>93, SSI (350-830nm)>93, excellent spectral similarity parameters, restore the color of natural light, let people experience nature and enjoy the sun bath;

[0076] 3. The relative spectral intensity of 650-700nm is >0.4. Repeated low-intensity irradiation on the retina can continuously promote retinal choroidal circulation, improve scleral hypoxia, and thus continuously control the growth of the eye axis, making it easier for the human eye to see objects, solving visual fatigue and preventing myopia;

[0077] 4.K B，V (Blue light hazard efficiency) = 0.000914784, which is the same as the K of sunlight with the same color temperature. B，V (Blue light hazard efficiency) is equal (i.e. K B，V / K B，V (6000K sunlight) = 100%), in line with the blue light exemption RG0 standard, the eye protection spectrum is healthier;

[0078] 5. With reference to the IEC-60904-2020 standard, it complies with the sunlight AM1.5G spectrum A+ standard and can be safely and effectively applied to solar photovoltaic (PV) device simulators to improve the output utilization rate of photovoltaic products.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solar photovoltaic device simulator LED, Features: It includes a plurality of LED chips, a bracket, silica gel and fluorescent glue, wherein the bracket has a bowl and positive and negative electrodes, and the plurality of LED chips are arranged in the bowl, and each LED chip is connected in series with the positive and negative electrodes by gold wire bonding, and the fluorescent glue is coated on each LED chip; Among them, the multiple LED chips include a first LED chip with a peak wavelength of 310-315nm, a second LED chip with a peak wavelength of 350-370nm, a third LED chip with a peak wavelength of 400-410nm, a fourth LED chip with a main wavelength of 440-445nm, a fifth LED chip with a main wavelength of 450-455nm, a sixth LED chip with a main wavelength of 465-470nm and a seventh LED chip with a main wavelength of 475-485nm.

2. The solar photovoltaic device simulator LED according to claim 1, Features: The area ratio of the first LED chip, the second LED chip, the third LED chip, the fourth LED chip, the fifth LED chip, the sixth LED chip, and the seventh LED chip is 1:1:1.1:1:1:

1.

3. The solar photovoltaic device simulator LED according to claim 1, Features: The number ratio of the first LED chip, the second LED chip, the third LED chip, the fourth LED chip, the fifth LED chip, the sixth LED chip, and the seventh LED chip is 1:1:1.2:2:2:

1.

4. The solar photovoltaic device simulator LED according to claim 3, Features: The bowl has a left installation area and a right installation area. The left installation area is provided with the first LED chip, the second LED chip, the fifth LED chip, the sixth LED chip and the seventh LED chip, and the right installation area is provided with the third LED chip, the fourth LED chip, the fifth LED chip and the sixth LED chip.

5. The solar photovoltaic device simulator LED according to claim 4, Features: The left mounting area is provided with two columns of the LED chips, the left column includes one of the first LED chips, and the right column includes one of the fifth LED chips, one of the seventh LED chips, one of the second LED chips and one of the sixth LED chips; The right mounting area is provided with the LED chips on both sides, the left column includes a sixth LED chip, a fourth LED chip, a fifth LED chip and a fourth LED chip, and the right column includes a third LED chip.

6. The solar photovoltaic device simulator LED according to any one of claims 1 to 5, Features: The top edge of the bowl is chamfered.

Images