Solar simulation device and photovoltaic test system
By using a combined design of heat sink and compressed air nozzle in a solar energy simulation device, the problem of a sharp rise in temperature in the photovoltaic IV test is solved, extending the service life of the equipment and improving stability.
Patent Information
- Application Number
- CN202323391359.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-12
AI Technical Summary
In the prior art, xenon lamps have a sharp rise in temperature during photovoltaic IV tests, which shortens their service life, affects the stability of equipment operation and increases the cost of use.
A solar energy simulation device is designed, including the upper cover of the light box and the lower body of the light box. By setting a heat dissipation member and a compressed air nozzle in the lower body of the light box, the heat dissipation member is penetrated with the cavity for heat dissipation, and the xenon lamp electrode is cooled through the compressed air nozzle. Cool down.
It effectively alleviates the problem of shortening the service life of xenon lamps in high temperature environments and improves the overall operating stability and service life of the equipment.
Smart Images
Figure CN222192305U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of comprehensive photovoltaic cell testing equipment, in particular to a solar energy simulation device and a photovoltaic testing system. Background Art
[0002] Photovoltaic IV testing is a test method for evaluating the performance of solar cells. It measures the current and voltage values of solar cells at different voltages and currents to obtain the current-voltage (IV) curve. By analyzing this curve, we can understand various parameters of solar cells, such as open circuit voltage, short circuit current, maximum power point and conversion efficiency; these parameters are very important because they directly affect the power generation capacity and performance of solar cells.
[0003] In photovoltaic IV testing, we usually use solar simulators to act as sunlight to ensure the accuracy and consistency of the test. In the prior art, solar simulators are mainly set up with xenon lamps as the light source of the light box. During the test, the temperature around the xenon lamp will rise sharply, especially when the test interval is short. The service life of the xenon lamp will be greatly shortened in a high temperature environment, affecting the overall operating stability of the equipment and increasing the cost of using the equipment. Utility Model Content
[0004] The utility model aims to provide a solar energy simulation device and a photovoltaic test system to alleviate the technical problem existing in the prior art that the temperature around the xenon lamp rises sharply during the test, especially when the test interval is short, the service life of the xenon lamp is greatly shortened in a high temperature environment, affecting the overall operating stability of the equipment.
[0005] In a first aspect, the utility model provides a solar energy simulation device, comprising a light box upper cover and a light box lower body, wherein the light box upper cover is covered on the top of the light box lower body, and a cavity is enclosed between the light box upper cover and the light box lower body;
[0006] The upper cover of the light box includes a heat sink and a lamp holder, the lamp holder extends into the cavity, the heat sink is connected to the cavity; the lamp holder is used for detachably connecting to the lamp body;
[0007] The lower body of the lamp box includes a plurality of compressed air nozzles, which are installed around the positions of the positive and negative electrodes of the lamp body, with the air outlets of the plurality of compressed air nozzles facing the positive and negative electrodes of the lamp body, and the plurality of compressed air nozzles are used to cool down the positive and negative electrodes of the lamp body.
[0008] In combination with the first aspect, the utility model provides a first possible implementation manner of the first aspect, wherein a light guide assembly is disposed in the lower body of the light box, the light guide assembly includes a first light guide barrel and a second light guide barrel, and the first light guide barrel is disposed between the lamp body and the second light guide barrel;
[0009] The inner diameter of the first light guide barrel is adapted to the lamp body, and the first light guide barrel is used for primary light guidance of the lamp body;
[0010] The inner diameter of the second light guide barrel is greater than the inner diameter of the first light guide port, and the second light guide barrel is used for secondary light guidance of the light transmitted by the lamp body through the first light guide barrel.
[0011] In combination with the first possible implementation of the first aspect, the utility model provides a second possible implementation of the first aspect, wherein the lower body of the light box is also provided with a plurality of diffuse reflective plates, and the inner wall of the first light guide barrel, the inner wall of the second light guide barrel and the inner wall of the cavity are all provided with a plurality of the diffuse reflective plates.
[0012] In combination with the second possible implementation of the first aspect, the utility model provides a third possible implementation of the first aspect, wherein the side wall of the lower body of the light box is provided with multiple air inlets, the heat sink is an axial flow fan, and an air duct is formed between the multiple air inlets and the heat sink, and the air duct is used to dissipate heat from the components in the cavity.
[0013] In combination with the third possible implementation of the first aspect, the utility model provides a fourth possible implementation of the first aspect, wherein the lower body of the light box also includes an adjustment plate, the cavity is provided with a light outlet, the adjustment plate is arranged at the light outlet, and the adjustment plate is used to evenly disperse the light transmitted by the light guide barrel.
[0014] In combination with the fifth possible implementation of the first aspect, the utility model provides a fifth possible implementation of the first aspect, wherein the adjustment sheet is made of a transparent material, and the uniformity of the adjustment sheet is adapted to the uniformity of the light emitted by the lamp body.
[0015] In combination with the fifth possible implementation of the first aspect, the utility model provides a sixth possible implementation of the first aspect, wherein the light box upper cover also includes a frame, and the heat sink and the lamp holder are both detachably connected to the frame.
[0016] In combination with the sixth possible implementation of the first aspect, the utility model provides a seventh possible implementation of the first aspect, wherein a through hole is provided at the end of the frame facing the heat sink, and the heat sink is detachably connected to the frame along the through hole.
[0017] In combination with the sixth possible implementation of the first aspect, the utility model provides an eighth possible implementation of the first aspect, wherein the light box upper cover is connected to the light box lower cover via a hinge.
[0018] In a second aspect, the utility model also provides a photovoltaic testing system, comprising the solar energy simulation device described above.
[0019] The embodiments of the utility model bring the following beneficial effects: the upper cover of the light box is covered on the top of the lower body of the light box, and a cavity is enclosed between the upper cover of the light box and the lower body of the light box, so that the lamp head, lamp body and other components have sufficient installation space and heat dissipation space. During the operation of the lamp body such as the xenon lamp used to simulate the solar optical fiber, since the lamp body is detachably connected to the lamp head and the lamp head is deeply inserted into the cavity, a heat sink is arranged on the upper cover of the light box, and the heat sink is connected to the cavity. The operation of the heat sink can control the surface temperature of the components in the cavity including the lamp body. Furthermore, since the most serious heat generation of the lamp body is the position of its positive and negative electrodes, in this embodiment, a plurality of compressed air nozzles are installed on the surrounding sides of the positions of the positive and negative electrodes of the lamp body, and the air outlets of the plurality of compressed air nozzles are directed toward the positive and negative electrodes of the lamp body. The refrigeration principle of compressed air is used to directly blow the heat source electrodes of the lamp body for targeted cooling, thereby alleviating the technical problem in the prior art that the temperature around the xenon lamp rises sharply during testing, especially when the test interval is short, and the xenon lamp is in a high temperature environment, which affects the overall operation stability of the equipment, thereby improving the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 A schematic diagram of the overall structure of a solar energy simulation device provided by an embodiment of the utility model;
[0022] Figure 2 A schematic diagram of the internal structure of a solar energy simulation device provided by an embodiment of the utility model;
[0023] Figure 3 A schematic diagram of the connection structure between the upper cover and the lower cover of the light box in the solar energy simulation device provided by the embodiment of the utility model;
[0024] Figure 4 A schematic diagram of the structure of the upper cover of the light box in the solar simulation assembly provided by the embodiment of the utility model;
[0025] Figure 5 A schematic diagram of the position of a compressed air nozzle in a solar energy simulation assembly provided by an embodiment of the utility model;
[0026] Figure 6 A schematic diagram of the structure of an adjusting member in a solar energy simulation assembly provided in an embodiment of the utility model.
[0027] Icons: 100 - light box upper cover; 110 - heat sink; 120 - lamp holder; 130 - lamp body; 140 - frame; 200 - light box lower body; 210 - compressed air nozzle; 220 - second light guide barrel; 230 - adjustment plate; 300 - hinge. DETAILED DESCRIPTION
[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] like Figure 1 - Figure 6 As shown, the utility model provides a solar energy simulation device, comprising a light box upper cover 100 and a light box lower body 200, wherein the light box upper cover 100 covers the top of the light box lower body 200, and a cavity is enclosed between the light box upper cover 100 and the light box lower body 200;
[0032] The light box upper cover 100 includes a heat sink 110 and a lamp holder 120. The lamp holder 120 extends into the cavity, and the heat sink 110 is connected to the cavity. The lamp holder 120 is used for detachably connecting the lamp body 130.
[0033] The lower body 200 of the lamp box includes a plurality of compressed air nozzles 210, which are installed around the positions of the positive and negative electrodes of the lamp body 130, the air outlets of the plurality of compressed air nozzles 210 are facing the positive and negative electrodes of the lamp body 130, and the plurality of compressed air nozzles 210 are used to cool down the positive and negative electrodes of the lamp body 130.
[0034] The upper cover 100 of the light box is covered on the top of the lower body 200 of the light box, and a cavity is enclosed between the upper cover 100 and the lower body 200 of the light box, so that the lamp head 120, the lamp body 130 and other components have sufficient installation space and heat dissipation space. During the operation of the lamp body 130 used to simulate solar optical fiber such as a xenon lamp, since the lamp body 130 is detachably connected to the lamp head 120, and the lamp head 120 is deeply inserted into the cavity, the heat sink 110 is arranged on the upper cover 100 of the light box, and the heat sink 110 is connected with the cavity. The operation of the heat sink 110 can control the surface temperature of the components in the cavity including the lamp body 130, and further Since the most serious heat generation place of the lamp body 130 is the position of its positive and negative electrodes, in this embodiment, multiple compressed air nozzles 210 are installed on the surrounding sides of the positions of the positive and negative electrodes of the lamp body 130, and the air outlets of the multiple compressed air nozzles 210 are facing the positive and negative electrodes of the lamp body 130. The cooling principle of compressed air is used to directly blow the heat source electrodes of the lamp body 130 to perform targeted cooling, thereby alleviating the technical problem in the prior art that the temperature around the xenon lamp will rise sharply during testing, especially when the test interval is short, the xenon lamp will affect the overall operating stability of the equipment in a high temperature environment, thereby improving the service life of the equipment.
[0035] It should be noted that the compressed air nozzle is a fine nozzle used to spray compressed air; the compressed air nozzle can adopt a variety of spray methods, including dry mist, wet mist and mixed spray, etc.; multiple modes are used together to ensure that the temperature of the lamp body 130 is constant. In addition, the compressed air nozzle can also be used in combination with other nozzles to form a more complex cleaning system.
[0036] Furthermore, a light guide assembly is disposed in the lower body 200 of the light box, and the light guide assembly includes a first light guide barrel and a second light guide barrel 220, and the first light guide barrel is disposed between the lamp body 130 and the second light guide barrel 220;
[0037] The inner diameter of the first light guide barrel is adapted to the lamp body 130, and the first light guide barrel is used for primary light guidance of the lamp body 130; the inner diameter of the second light guide barrel 220 is adapted to the cavity, and the second light guide barrel 220 is used for secondary light guidance of the lamp body 130 transmitting light through the first light guide barrel.
[0038] In order to make the intensity of light transmitted by the lamp body 130 along the light outlet of the cavity stronger, in the present embodiment, the lower body 200 of the light box is provided with a first light guide barrel and a second light guide barrel 220, wherein the first light guide barrel is arranged on the side close to the lamp body 130, and the inner diameter of the first light guide barrel is slightly larger than the lamp body 130, so that the light of the lamp body 130 can be fully transmitted and the energy loss is reduced, and the primary light guidance is performed, and the second light guide barrel 220 is arranged on the side close to the light outlet, and the inner diameter of the second light guide barrel 220 is larger than the first light guide barrel, which is used for secondary light guidance of the light transmitted by the lamp body 130 through the first light guide barrel, and the light has sufficient coverage area.
[0039] It should be noted that the first light guide barrel can be arranged in the form of being externally arranged on the lamp body, or can be arranged in the form of being internally arranged inside the lamp body.
[0040] Furthermore, the lower body 200 of the light box is also provided with a plurality of diffuse reflective plates, and the inner wall of the first light guide barrel, the inner wall of the second light guide barrel 220 and the inner wall of the cavity are all provided with a plurality of diffuse reflective plates.
[0041] In this embodiment, the inner wall of the first light guide barrel, the inner wall of the second light guide barrel 220 and the inner wall of the cavity are all provided with a plurality of diffuse reflective plates, and the setting of the diffuse reflective plates can evenly reflect the incident light in all directions, thereby realizing efficient use of light.
[0042] Furthermore, a plurality of air inlets are disposed on the side wall of the light box lower body 200, the heat sink 110 is an axial flow fan, and an air duct is formed between the plurality of air inlets and the heat sink 110, and the air duct is used to dissipate heat from the components in the cavity.
[0043] In this embodiment, the heat sink 110 is an axial flow fan, which is low-cost and easy to use. By providing a plurality of air inlets on the side wall of the lower body 200 of the light box, an air duct is formed between the air inlet and the heat sink 110. When the heat sink 110 is running, the air flow in the cavity is accelerated, thereby reducing the surface temperature of the components in the cavity and maintaining a constant temperature.
[0044] It should be noted that the heat sink 110 may also be a heat sink such as a compression air conditioner.
[0045] Furthermore, the lower body 200 of the light box also includes an adjusting plate 230, the cavity is provided with a light outlet, and the adjusting plate 230 is arranged at the light outlet, and the adjusting plate 230 is used to evenly disperse the light transmitted by the light guide barrel.
[0046] During the transmission process, the light intensity gradually decreases along its straight line direction to both sides. In order to make the light emitted from the light outlet more uniform, the material distribution inside the adjustment plate 230 can be changed so that the light can be refracted inside the adjustment plate 230, thereby achieving the effect of uniform light at the light outlet.
[0047] Furthermore, the adjustment sheet 230 is made of a transparent material, and the uniformity of the adjustment sheet 230 matches the uniformity of the light emitted by the lamp body 130 .
[0048] The adjustment plate 230 can be made of acrylic plate, pure white glass and other materials. By adjusting the internal thickness and refractive index, the uniformity of the adjustment plate 230 is adapted to the uniformity of the light emitted by the lamp body 130, thereby achieving the effect of uniform light intensity at the light outlet.
[0049] Furthermore, the light box upper cover 100 further includes a frame 140 , and the heat sink 110 and the lamp holder 120 can be detachably connected to the frame 140 .
[0050] Furthermore, a through hole is provided at the end of the frame 140 facing the heat sink 110 , and the heat sink 110 is detachably connected to the frame 140 along the through hole.
[0051] The heat sink 110 and the lamp holder 120 can be detachably connected to the frame 140 by threaded connection, plug-in connection, etc., which is convenient for later maintenance and replacement of components. At the same time, a through hole is provided at the end of the frame 140 facing the heat sink 110, and the through hole is connected with the internal cavity, so as to form an air duct between the heat sink 110 and the inside of the cavity, thereby ensuring the constant temperature of the components in the cavity.
[0052] Furthermore, the light box upper cover 100 is connected to the light box lower cover via a hinge 300 .
[0053] The hinge 300 has the advantages of simple operation, strong load-bearing capacity, and convenient installation. At the same time, the light box upper cover 100 and the light box lower cover can also be connected by but not limited to plug-in, threaded connection and other connection methods.
[0054] In a second aspect, this embodiment further provides a photovoltaic testing device, comprising the solar energy simulation device described above.
[0055] Its connection structure and working principle have been described above and will not be repeated here.
[0056] The technical effects are as follows:
[0057] This utility model has five main features:
[0058] 1. Use compressed air nozzle 210 to directly dissipate heat from the xenon lamp electrode:
[0059] The most serious heat generation of the xenon lamp is at the positive and negative electrodes of the xenon lamp. By utilizing the cooling principle of the compressed air nozzle 210, the heat source electrodes of the xenon lamp are directly blown to achieve a cooling effect.
[0060] 2. Use axial flow fans to discharge the heat inside the light box to the outside:
[0061] The axial flow fan is installed on the top of the light box, and the openings around the light box body are used as air inlets to form an air duct for heat dissipation;
[0062] 3. Use the flip-top method to change the lamp:
[0063] Considering the convenience of on-site users to change lamps, a simple lamp replacement design is implemented;
[0064] 4. Reserve uniformity adjustment sheet 230 at the bottom of the light box:
[0065] By using the adjustment sheet 230, the light intensity within the specified area is kept uniform, and a uniformity adjustment layer is specially designed to meet customer requirements;
[0066] 5. The overall internal optical path uses a diffuse reflector plate method and a light guide component method.
[0067] By using a diffuse reflector and a light guide barrel assembly, the light intensity passing through the light outlet of the light box can be made stronger.
[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A solar energy simulation device, characterized in that: The light box comprises a light box upper cover (100) and a light box lower body (200), wherein the light box upper cover (100) covers the top of the light box lower body (200), and a cavity is enclosed between the light box upper cover (100) and the light box lower body (200); The light box upper cover (100) comprises a heat sink (110) and a lamp holder (120); the lamp holder (120) extends into the cavity, and the heat sink (110) is connected to the cavity; the lamp holder (120) is used for detachably connecting to the lamp body (130); The lower body (200) of the lamp box includes a plurality of compressed air nozzles (210), and the plurality of compressed air nozzles (210) are installed on the peripheral sides of the positions of the positive and negative electrodes of the lamp body (130), and the air outlets of the plurality of compressed air nozzles (210) are oriented toward the positive and negative electrodes of the lamp body (130), and the plurality of compressed air nozzles (210) are used to cool down the positive and negative electrodes of the lamp body (130).
2. The solar energy simulation device according to claim 1, characterized in that: A light guide assembly is arranged in the lower body (200) of the light box, and the light guide assembly comprises a first light guide barrel and a second light guide barrel (220), wherein the first light guide barrel is arranged between the lamp body (130) and the second light guide barrel (220); The inner diameter of the first light guide barrel is adapted to the lamp body (130), and the first light guide barrel is used for primary light guidance of the lamp body (130); The inner diameter of the second light guide barrel (220) is greater than that of the first light guide barrel, and the second light guide barrel (220) is used for secondary light guidance of the light transmitted by the lamp body (130) through the first light guide barrel.
3. The solar energy simulation device according to claim 2, characterized in that: The lower body (200) of the light box is also provided with a plurality of diffuse reflective plates, and the inner wall of the first light guide barrel, the inner wall of the second light guide barrel (220) and the inner wall of the cavity are all provided with a plurality of the diffuse reflective plates.
4. The solar energy simulation device according to claim 2, characterized in that: The side wall of the lower body (200) of the light box is provided with a plurality of air inlets, the heat sink (110) is an axial flow fan, and an air duct is formed between the plurality of air inlets and the heat sink (110), and the air duct is used to dissipate heat from the components in the cavity.
5. The solar energy simulation device according to claim 4, characterized in that: The light box lower body (200) further comprises an adjustment sheet (230), the cavity is provided with a light outlet, the adjustment sheet (230) is arranged at the light outlet, and the adjustment sheet (230) is used to evenly disperse the light transmitted by the light guide barrel.
6. The solar energy simulation device according to claim 5, characterized in that: The adjustment sheet (230) is made of a transparent material, and the uniformity of the adjustment sheet (230) matches the uniformity of the light emitted by the lamp body (130).
7. The solar energy simulation device according to claim 1, characterized in that: The light box upper cover (100) further comprises a frame (140), and the heat sink (110) and the lamp holder (120) are both detachably connected to the frame (140).
8. The solar energy simulation device according to claim 7, characterized in that: The frame (140) is provided with a through hole at an end portion facing the heat sink (110), and the heat sink (110) is detachably connected to the frame (140) along the through hole.
9. The solar energy simulation device according to claim 1, characterized in that: The light box upper cover (100) is connected to the light box lower body (200) via a hinge (300).
10. A photovoltaic testing system, characterized in that: A solar energy simulation device comprising any one of claims 1 to 9.