Battery string detection equipment

Abstract

The utility model provides cell string detection equipment, and relates to the technical field of solar cell detection equipment. The battery string detection device can comprise a rack, a bearing assembly, at least one solar simulator and an IV tester. The bearing assembly is arranged on the rack and used for bearing a battery string. The at least one solar simulator is arranged on one side of the bearing assembly and used for providing a light source. Wherein the shape of the cross section of the light emitted by at least one solar simulator is matched with the shape of the cell string, and the light covers the cell string. The IV tester comprises a probe row in contact with the battery string, and the IV performance of the battery string is detected through the probe row. The battery string detection equipment can monitor the performance of the battery string, further monitor the tandem connection quality of the battery pieces, screen the electrical performance grade of the battery string in advance, and improve the photoelectric conversion efficiency of a battery assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell detection and preparation, in particular to a battery string detection device. Background Art

[0002] In the pursuit of high efficiency and high photoelectric conversion efficiency, the detection standards for the electrical performance of solar cells on the production line are also constantly improving.

[0003] Currently, the existing IV test technology generally only includes the performance detection of solar cells and battery modules. In this way, only the performance advantages and disadvantages of the detected modules can be judged, and it is impossible to know which link has problems during the manufacturing process of the battery module. In the process of obtaining the battery module from the solar cells, there is also a process of forming a battery string from the solar cells. The connection quality of the battery string and some other factors in this process will also affect the performance of the final battery module. At present, the production process of forming a battery string from solar cells and then forming a battery module from the battery string has been fully automated. However, after the battery string is formed, the performance of the battery string is not detected. The connection quality of the solar cells directly affects the performance of the module. Therefore, it is particularly important to monitor the connection quality of the solar cells during the production process of the battery module.

[0004] In the electrical performance detection system of the battery string, the most critical solar simulator has the best spectral mismatch of A+ level according to the latest international standard IEC-60904-9-2020. However, it is difficult for the spectrum of the current solar simulator to maintain a high degree of matching for a long time. In the existing technology, a spectrometer is generally used to directly detect the light emitted by the solar simulator. However, the light irradiated on the target object is often not the same light as the detected light, resulting in differences in the light intensity and spectrum of the light, and further causing errors in the adjustment of the light of the solar simulator, resulting in inaccurate detection results. Summary of the Utility Model

[0005] An object of the first aspect of the utility model is to provide a battery string detection device to solve the problem that the photoelectric conversion efficiency of the finished battery module is low due to the lack of detection of the performance of the battery string in the existing technology.

[0006] In particular, the utility model also provides a battery string detection device for performing IV performance detection on the battery string, including:

[0007] A frame;

[0008] A carrying component, arranged on the frame, for carrying the battery string;

[0009] At least one solar simulator, which is arranged on one side of the carrying component for providing light source; wherein, the cross-sectional shape of the light emitted by the at least one solar simulator matches the shape of the battery string and covers the battery string; and

[0010] IV tester, which includes a probe row in contact with the battery string, and the IV performance of the battery string is detected through the probe row.

[0011] Optionally, it further includes a homogenizing sheet, which is arranged between the at least one solar simulator and the battery string, so that the light emitted by the solar simulator irradiates the battery string after passing through the homogenizing sheet.

[0012] Optionally, the homogenizing sheet includes a grid glass, and a plurality of unevenly arranged grid points are provided on its surface, so that the light emitted by the solar simulator is homogenized after passing through the grid points.

[0013] Optionally, the number of the at least one solar simulator is multiple, and the light emitted by adjacent solar simulators overlaps at least partially before irradiating the homogenizing sheet; the light spots emitted by the multiple solar simulators form a continuous homogenized light spot that matches the shape of the battery string after passing through the homogenizing sheet, and the homogenized light spot covers all areas of the battery string.

[0014] Optionally, the carrying component includes:

[0015] Support frame;

[0016] Carrier plate, which is arranged at the support frame, and the carrier plate is used to carry the battery string;

[0017] At least one first driving component; and

[0018] Fixing component, which is used to support the probe row and drive the probe row to move along a first preset direction under the drive of the first driving component; wherein, the first preset direction is the direction in which the battery strings extend side by side.

[0019] Optionally, each of the first driving components includes:

[0020] Motor;

[0021] Drive wheel, which rotates under the drive of the motor; and

[0022] Drive belt, which is arranged on the drive wheel to move when the drive wheel rotates.

[0023] Optionally, the fixing component includes:

[0024] Gantry, which is connected to the drive belt to drive the gantry to move along the first preset direction when the drive belt moves;

[0025] A fixing base for fixing the probe row, the fixing base is connected to the gantry to drive the probe row to move along the first preset direction when the gantry moves; and

[0026] A sliding table electric cylinder is arranged between the gantry and the fixing base to drive the fixing base to move relative to the carrier plate along a second preset direction, so that the probe row approaches or moves away from the battery string; wherein, the second preset direction is perpendicular to the first preset direction.

[0027] Optionally, at least one through hole is provided at the carrier plate;

[0028] The carrying component further includes an adsorption component, the adsorption component is arranged at the through hole, and the adsorption component is configured to blow air into the through hole so that the battery string is adsorbed at the carrier plate.

[0029] Optionally, a second driving component is further included, and the second driving component is connected to the support frame to drive the support frame to move along a third preset direction; wherein, the third preset direction is perpendicular to the first preset direction, and the third preset direction is perpendicular to the second preset direction.

[0030] Optionally, a temperature control component is further included, and the temperature control component includes:

[0031] A temperature detection device is arranged on one side of the battery string for detecting the temperature of the battery string;

[0032] A control module is connected to the temperature detection device to issue a control instruction according to the temperature detected by the temperature detection device; and

[0033] A cooling device is arranged on one side of the battery string for receiving the control instruction of the control module and then adjusting the fluid flow rate so that the temperature of the battery string is within a preset range.

[0034] Optionally, the solar simulator includes:

[0035] A light source for emitting solar simulation light; and

[0036] A shaping component for shaping the simulation light emitted by the light source into a light spot with a preset cross-sectional shape; the preset shape is a rectangle or a square.

[0037] Optionally, the shaping component includes a first fly-eye lens, and the first fly-eye lens is arranged on one side of the light source to homogenize the simulation light and form light of the preset shape and then emit it.

[0038] Optionally, the first fly-eye lens includes a plurality of sub-lenses, and each sub-lens has the preset shape.

[0039] Optionally, the solar simulator further includes:

[0040] A dichroic mirror disposed between the light source and the first fly-eye lens to divide the simulated light emitted by the light source into two beams, one beam entering the first fly-eye lens after coming out of the dichroic mirror and then exiting; and

[0041] A spectrometer disposed on the side of the dichroic mirror to receive the other beam of light from the dichroic mirror, thereby performing real-time monitoring and feedback on the light emitted by the light source.

[0042] Optionally, the dichroic mirror forms an angle of 45 degrees with the side where the light source is disposed.

[0043] Optionally, the solar simulator further includes a second fly-eye lens disposed between the spectrometer and the dichroic mirror, so that the light emitted by the light source is homogenized by the second fly-eye lens and then irradiated to the spectrometer;

[0044] Wherein, the second fly-eye lens is the same as the first fly-eye lens.

[0045] Optionally, the solar simulator further includes:

[0046] A first Fresnel lens disposed on the side of the first fly-eye lens opposite to the light source, so that the light emitted from the first fly-eye lens passes through the first Fresnel lens and then exits; and

[0047] A second Fresnel lens disposed between the second fly-eye lens and the spectrometer, so that the light emitted by the light source passes through the second fly-eye lens and the second Fresnel lens and then is irradiated into the spectrometer.

[0048] Optionally, the light source is an LED light source; the LED light source includes at least one set of simulated light groups, each set of simulated light groups is provided with a plurality of LED lamp beads of different wavelengths, and the wavelength range of the light emitted by the LED lamp beads in each set of simulated light groups is M to N; the light emitted by the LED lamp beads in all the simulated light groups forms simulated sunlight that highly fits the AM1.5 spectrum; wherein, M < N, and the range of M is 300nm ≤ M < 1200nm, and the range of N is 300nm < N ≤ 1200nm.

[0049] Optionally, all the simulated light groups are disposed on the same side of the solar simulator, and in the wavelength range M to N of the light emitted by the lamp beads of each set of simulated light groups, M is equal to 300nm and N is equal to 1200nm.

[0050] Optionally, part of the simulated light groups are arranged on the first side of the solar simulator, and the wavelength range of the light emitted by the lamp beads of each simulated light group on the first side is M to X, where M is equal to 300 nm and 300 nm < X < 1200 nm;

[0051] The other simulated light groups are arranged on the second side of the solar simulator, and the wavelength of the light emitted by the lamp beads of each simulated light group on the second side is X to N; where 300 nm < X < 1200 nm and N is equal to 1200 nm;

[0052] Wherein, the first side and the second side are perpendicular to each other.

[0053] Optionally, part of the simulated light groups are arranged on the first side of the solar simulator, and the wavelength range of the light emitted by the lamp beads of each simulated light group on the first side is X to N; where 300 nm < X < 1200 nm and N is equal to 1200 nm;

[0054] The other simulated light groups are arranged on the second side of the solar simulator, and the wavelength of the light emitted by the lamp beads of each simulated light group on the second side is M to X; where M is equal to 300 nm and 300 nm < X < 1200 nm;

[0055] Wherein, the first side and the second side are perpendicular to each other.

[0056] Optionally, the simulated light groups on each side of the solar simulator each include a plurality, and the plurality of simulated light groups are arranged in an array;

[0057] The LED lamp beads of each simulated light group are arranged in an array.

[0058] Optionally, each simulated light group further includes a plurality of lamp cups, each lamp cup is matched with one of the LED lamp beads, and each LED lamp cup is closely attached to the corresponding LED lamp bead, so that the light emitted by the LED lamp bead is converged by the corresponding lamp cup and then emitted.

[0059] Optionally, the light source is a xenon lamp light source, and the shaping component includes a lamp cover arranged outside the xenon lamp, and the lamp cover has an opening, and the shape of the opening is the preset shape.

[0060] Optionally, the solar simulator further includes a filter, which is arranged on one side of the xenon lamp light source, so that the light emitted by the xenon lamp forms simulated sunlight that highly fits the AM1.5 spectrum after passing through the filter.

[0061] Optionally, the solar simulator further includes a light homogenizer disposed on a side of the filter away from the xenon light source, so that the light emitted from behind the filter is homogenized by the light homogenizer and then emitted.

[0062] The battery string detection device of this solution may include a frame, a carrying component, at least one solar simulator, and an IV tester. The carrying component can carry the battery string, the solar simulator provides a light source, and the IV tester detects the IV performance of the battery string, enabling the monitoring of the performance of the battery string, and further enabling the monitoring of the stringing quality of the battery cells. The electrical performance level of the battery string can be screened in advance, improving the photoelectric conversion efficiency of the battery module.

[0063] In this solution, a homogenizing sheet is provided between the solar simulator and the battery string, making the light irradiating on the battery string more uniform, ensuring that the light irradiating on the battery string to be tested meets the 3A requirement, and thus making the data detected for the battery string more accurate.

[0064] This solution may include multiple solar simulators, and the light emitted by adjacent solar simulators at least partially overlaps before irradiating on the homogenizing sheet. Through the homogenizing sheet, the overlapping part of the light from multiple solar simulators can be homogenized, avoiding excessive light intensity in the overlapping part and affecting the detection of the battery string.

[0065] The battery string needs to be set on the carrier plate of this solution. To ensure that the battery string does not move during the detection process, through holes are provided at the carrier plate, and an adsorption component is provided at the through holes. The adsorption component can be a Bernoulli chuck. By blowing air through the Bernoulli chuck to the through holes of the carrier plate, the battery string is adsorbed to the carrier plate.

[0066] This solution detects the temperature of the battery string through a temperature detection device and controls the temperature of the battery string to keep it within a preset range. When the temperature is within the preset range, the flow rate of the fluid in the cooling device remains unchanged. When the temperature is too high, the flow rate of the fluid in the cooling device is increased. When the temperature is too low, the flow rate of the fluid in the cooling device is decreased or the cooling device is turned off. Keeping the temperature of the battery string within the preset range ensures more accurate data when detecting the IV performance of the battery string.

[0067] The solar simulator of this solution may include a light source and a shaping component. The shaping component shapes the light emitted by the light source into a rectangular or square light spot, which can then match the rectangular battery string, minimizing light loss as much as possible while meeting the light source requirements for battery string detection.

[0068] The solar simulator of this solution may also include a dichroic mirror and a spectrometer. The light source irradiates light on the dichroic mirror, and the dichroic mirror divides the light into two beams. One beam irradiates the target (i.e., the battery string), and the other beam irradiates the spectrometer, so that the light irradiating the spectrometer and the target is the light at the same position. Furthermore, the properties of the light detected in the spectrometer are consistent with the properties of the light irradiating the target, and thus the subsequent detection structure is more accurate.

[0069] The wavelength range of the light emitted by the lamp beads in each simulation light group of this solution is M to N; M < N, and the range of M is 300nm ≤ M < 1200nm, and the range of N is 300nm < N ≤ 1200nm. The wavelength range of the light emitted by the lamp beads in all simulation light groups is 300nm to 1200nm. That is, the solar simulator of this solution can finally select lamp beads in the 300nm to 1200nm region for fitting, so that a variety of lamp beads can meet the high matching of fitting, and the finally obtained spectral grade reaches a higher grade (such as A+), and can be maintained at this grade for a long time, and can always maintain extremely low spectral mismatch during the electrical performance detection process.

[0070] In this solution, simulation light groups are arranged on both the first side and the second side of the solar simulator, and the wavelengths of the light emitted by the simulation light groups on both sides do not cross, which can reduce the manufacturing difficulty of the dichroic mirror, reduce the manufacturing cycle and manufacturing cost of the dichroic mirror.

[0071] A spectrometer is arranged at the solar simulator of this solution. The light emitted by the light source enters the spectrometer partially after passing through the dichroic mirror. The spectrometer is used to monitor the light beam in real time, collect spectral data, realize the monitoring of the spectrum and light intensity of the light source, and thus can adjust the spectrum and light intensity of the light source in real time to meet the detection requirements.

[0072] A compound eye lens is arranged at the solar simulator of this solution, so that the light emitted from the dichroic mirror passes through the compound eye lens and then emits, and thus the light emitted by the solar simulator is more uniform.

[0073] The light emitted from the compound eye lens of the solar simulator of this solution can be focused on a certain plane after passing through the Fresnel lens, and thus the light spot at the focal plane is more collimated and homogenized.

[0074] In the series welding battery detection equipment of this solution, the above-mentioned solar simulator is used to provide a light source, and an IV tester is used to detect the IV performance of the battery string to be tested during the battery string welding process, so as to monitor the series connection quality of the series welding battery sheets and improve the photoelectric conversion efficiency of the finished battery module.

[0075] The series welding battery detection device of this solution uses the above-mentioned solar simulator, which can emit uniform light. In addition, a grid glass is provided below the solar simulator, so that the light emitted from the solar simulator is further homogenized, and then the light irradiating the battery string to be tested meets the 3A requirement, thereby making the detection of the IV performance at different positions more accurate and the data more real.

[0076] The light emitted by multiple solar simulators in this solution at least partially overlaps to avoid discontinuity between the lights of different solar simulators. After the lights emitted by multiple solar simulators at least partially overlap and are homogenized through the grid glass, a uniform distribution of the light intensity in the area of the series welding battery slice to be tested is achieved.

[0077] Based on the following detailed description of the specific embodiments of the present invention in conjunction with the drawings, those skilled in the art will more clearly understand the above and other objects, advantages and features of the present invention. Description of the Drawings

[0078] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the drawings in an exemplary but non-limiting manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0079] Figure 1 is a schematic structural diagram of a battery string detection device according to a specific embodiment of the present invention;

[0080] Figure 2 is a schematic structural diagram of a homogenizing sheet according to a specific embodiment of the present invention;

[0081] Figure 3 is a schematic structural diagram of a bearing assembly and a second driving assembly at an angle according to a specific embodiment of the present invention;

[0082] Figure 4 is a schematic structural diagram of a bearing assembly and a second driving assembly at another angle according to a specific embodiment of the present invention;

[0083] Figure 5 is a schematic structural diagram of a bearing assembly, a second driving assembly and a temperature control assembly according to a specific embodiment of the present invention;

[0084] Figure 6 is a schematic structural diagram of a solar simulator according to a specific embodiment of the present invention;

[0085] Figure 7 is a schematic structural diagram of a solar simulator at an angle according to a specific embodiment of the present invention;

[0086] Figure 8 It is a schematic structural diagram of another angle of a solar simulator according to a specific embodiment of the present invention;

[0087] Figure 9 It is a side view of a compound eye lens of a solar simulator according to a specific embodiment of the present invention;

[0088] Figure 10 It is a top view of a compound eye lens of a solar simulator according to a specific embodiment of the present invention;

[0089] Figure 11 It is a top view of a compound eye lens of a solar simulator according to another specific embodiment of the present invention;

[0090] Figure 12 It is a schematic optical path diagram of a solar simulator with light sources arranged on two sides according to a specific embodiment of the present invention;

[0091] Figure 13 It is a schematic structural diagram of a solar simulator according to another specific embodiment of the present invention.

[0092] Explanation of reference numerals:

[0093] Battery string detection device - 10; Frame - 200; Carrying assembly - 300; Support frame - 310; Carrier plate - 320; Through hole - 321; Adsorption assembly - 322; First driving assembly - 330; Motor - 331; Driving wheel - 332; Transmission belt - 333; Fixing assembly - 340; Gantry - 341; Fixing seat - 342; Slide table electric cylinder - 343;

[0094] Solar simulator - 100; Homogenizing sheet - 400; Grid points - 401; Second driving assembly - 500; Temperature control assembly - 600; Temperature detection device - 610; Cooling device - 620;

[0095] Light source 101; Simulation optical group - 110; Lamp cup - 111; First side - 120; Second side - 130; Dichroic mirror - 140; Spectrometer - 150; First compound eye lens - 160; Sub - lens - 161; First Fresnel lens - 170; Second compound eye lens - 180; Second Fresnel lens - 190;

[0096] Xenon lamp - 102; Filter - 103; Light homogenizing sheet - 104. Detailed implementation manners

[0097] In the description of this embodiment, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "height", "upper", "lower", "left", "right", "vertical", "horizontal", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation to the present utility model.

[0098] As a specific embodiment of the present utility model, as Figure 1 shown, this embodiment provides a battery string detection device 10 for performing IV performance detection on a battery string. Specifically, the battery string detection device 10 of this embodiment may include a frame 200, a loading assembly 300, at least one solar simulator 100, and an IV tester (not shown in the figure). Among them, the loading assembly 300 is disposed on the frame 200 for loading the battery string. At least one solar simulator 100 is disposed on one side of the loading assembly 300 for providing light. Among them, the cross-sectional shape of the light emitted by at least one solar simulator 100 matches the shape of the battery string and covers the battery string. The IV tester may include a probe row that contacts the battery string, and the IV performance of the battery string is detected through the probe row.

[0099] Specifically, the battery string detection device 10 of this embodiment may include a frame 200, a loading assembly 300, at least one solar simulator 100, and an IV tester. The loading assembly 300 can load the battery string, the solar simulator 100 provides light, and the IV tester detects the IV performance of the battery string, which can realize the monitoring of the performance of the battery string, and further realize the monitoring of the stringing quality of the battery cells. The electrical performance level of the battery string can be screened in advance, and the photoelectric conversion efficiency of the battery module can be improved.

[0100] As a specific embodiment of the present utility model, as shown in Figure 1 and Figure 2 shown, the battery string detection device 10 of this embodiment may further include a homogenizing sheet 400, which is disposed between at least one solar simulator 100 and the battery string, so that the light emitted by the solar simulator 100 irradiates the battery string after passing through the homogenizing sheet 400.

[0101] In this embodiment, the homogenizing sheet 400 is disposed between the solar simulator 100 and the battery string, so that the light irradiating the battery string is more uniform, the light irradiating the battery string to be tested meets the 3A requirement, and further the data for detecting the battery string is more accurate.

[0102] As a specific embodiment of the present utility model, the homogenizing sheet 400 of this embodiment may include a grid glass, on the surface of which there are a plurality of unevenly arranged grid points 401, so that the light emitted by the solar simulator 100 is homogenized after passing through the grid points 401.

[0103] Specifically, the distribution of the grid points 401 in the grid glass of this embodiment is related to the intensity of the light of the solar simulator 100, the shape of the light spot, etc. And the distribution of the grid points 401 is also related to the number of the solar simulators 100. Specifically, the optical system of the grid points 401 is simulated and designed, and finally the modulation of the irradiation uniformity is realized.

[0104] As a specific embodiment of the present utility model, as Figure 1 shown, the number of at least one solar simulator 100 in this embodiment is multiple, and the light emitted by adjacent solar simulators 100 overlaps at least partially before irradiating the homogenizing sheet 400. The light spots emitted by the multiple solar simulators 100 form a continuous homogenized light spot that matches the shape of the battery string after passing through the homogenizing sheet 400, and the homogenized light spot covers all areas of the battery string.

[0105] Specifically, the solar simulator 100 of this embodiment may include multiple ones, and the light emitted by adjacent solar simulators 100 overlaps at least partially before irradiating the homogenizing sheet 400. Through the homogenizing sheet 400, the overlapping part of the light of the multiple solar simulators 100 can be homogenized, avoiding the excessive light intensity of the overlapping part and affecting the detection of the battery string.

[0106] Since the shape of the battery string in this embodiment is generally rectangular. The light irradiated by the solar simulator 100 of this embodiment can also be rectangular, so that it can be ensured that the sunlight at the battery string reaches the required energy level with the smallest irradiation area.

[0107] Of course, the number of the solar simulators 100 can be adjusted according to the size of the battery string. When one solar simulator 100 cannot cover the entire battery string, multiple solar simulators 100 can be set, and the light emitted by the multiple solar simulators 100 can still be rectangular.

[0108] As a specific embodiment of the present utility model, as Figure 3 and Figure 4 shown, the carrier assembly 300 of this embodiment may include a support frame 310, a carrier plate 320, at least one first driving assembly 330 and a fixing assembly 340. Among them, the carrier plate 320 is arranged at the support frame 310, and the carrier plate 320 is used to carry the battery string. The fixing assembly 340 is used to support the probe row and drive the probe row to move along a first preset direction under the drive of the first driving assembly 330. Among them, the first preset direction is the direction in which the battery strings extend side by side.

[0109] Specifically, in this embodiment, the probe rows are moved in the first preset direction, so as to adapt to battery strings of different sizes.

[0110] Specifically, this embodiment may include two fixing components 340. The two fixing components 340 are respectively connected to one set of probe rows and are matched with the two ends of the battery string through the movement of the two fixing components 340.

[0111] As a specific embodiment of the present utility model, each first driving component 330 of this embodiment may include a motor 331, a driving wheel 332, and a transmission belt 333. The driving wheel 332 rotates driven by the motor 331. The transmission belt 333 is arranged on the driving wheel 332 to move when the driving wheel 332 rotates.

[0112] Specifically, one first driving component 330 is respectively arranged on both sides of each fixing component 340. The two first driving components 330 jointly drive the fixing component 340 to move. Additionally, the other two second driving components jointly drive the other fixing component 340 to move.

[0113] As a specific embodiment of the present utility model, the fixing component 340 of this embodiment may include a gantry 341, a fixing base 342, and a slide electric cylinder 343. Wherein, the gantry 341 is connected to the transmission belt 333 to drive the gantry 341 to move along the first preset direction when the transmission belt moves. The fixing base 342 is used to fix the probe rows, and the fixing base 342 is connected to the gantry 341 to drive the probe rows to move along the first preset direction when the gantry 341 moves. The slide electric cylinder 343 is arranged between the gantry 341 and the fixing base 342 to drive the fixing base 342 to move relative to the carrier plate 320 along the second preset direction, so as to make the probe rows approach or move away from the battery string; wherein, the second preset direction is perpendicular to the first preset direction.

[0114] The fixing component 340 of this embodiment may include a gantry 341, a fixing base 342, and a slide electric cylinder 343. The gantry 341 is driven to move by the first driving component 330, the probe rows are fixed on the fixing base 342, and the slide electric cylinder 343 can drive the probe rows to move up and down relative to the gantry 341, so as to drive the probe rows to contact the battery string and then perform IV performance detection.

[0115] As a specific embodiment of the present utility model, at least one through hole 321 is provided at the carrier plate 320 of this embodiment. The bearing component 300 may further include an adsorption component 322. The adsorption component 322 is arranged at the through hole 321, and the adsorption component 322 is configured to blow air into the through hole so as to adsorb the battery string at the carrier plate 320.

[0116] Specifically, a battery string needs to be arranged on the carrier board 320 of this embodiment. To ensure that the battery string does not move during the detection process, through holes 321 are arranged at the carrier board 320, and an adsorption component 322 is arranged at the through holes 321. The adsorption component 322 can be a Bernoulli chuck. By blowing air through the Bernoulli chuck at the through holes 321 of the carrier board 320, the battery string is adsorbed at the carrier board 320.

[0117] Specifically, each carrier board 320 of this embodiment may include two through holes, and one adsorption component 322 is arranged at each through hole 321.

[0118] As a specific embodiment of the present utility model, the battery string detection device 10 of this embodiment may further include a second driving component 500. The second driving component 500 is connected to the support frame 310 to drive the support frame 310 to move along a third preset direction; wherein, the third preset direction is perpendicular to the first preset direction, and the third preset direction is perpendicular to the second preset direction.

[0119] Specifically, the second driving component 500 is mainly used to drive the carrier board 320 to drive the battery string to move along the third preset direction, so as to enable the position of the battery string to match the position of the light irradiated by the solar simulator 100.

[0120] As a specific embodiment of the present utility model, as Figure 5 shown, the battery string detection device 10 of this embodiment may further include a temperature control component 600. The temperature control component 600 may include a temperature detection device 610, a control module, and a cooling device 620. Among them, the temperature detection device 610 is arranged on one side of the battery string to detect the temperature of the battery string. The control module is connected to the temperature detection device 610 to issue a control instruction according to the temperature detected by the temperature detection device 610. The cooling device 620 is arranged on one side of the battery string to receive the control instruction of the control module and then adjust the fluid flow rate so that the temperature of the battery string is within a preset range.

[0121] Specifically, the temperature detection device 610 may be a temperature sensor, which can detect the temperature of the battery string. Specifically, the cooling device 620 of this embodiment may be an air-cooled or water-cooled structure. Heat is removed through the flow of gas or liquid to cool the battery string. More specifically, the cooling device 620 of this embodiment is an air knife, and the outlet of the air knife faces the battery string. The battery string is cooled by blowing relatively clean gas from the air knife towards the battery string.

[0122] Specifically, the temperature of the battery string is detected by the temperature detection device 610, and the temperature of the battery string is controlled so that the temperature of the battery string is maintained within a preset range. When the temperature is within the preset range, the flow rate of the fluid of the cooling device 620 is kept unchanged. When the temperature is too high, the flow rate of the fluid of the cooling device 620 is increased. When the temperature is too low, the flow rate of the fluid of the cooling device 620 is decreased or the cooling device 620 is turned off. Keeping the temperature of the battery string within the preset range ensures more accurate data when detecting the IV performance of the battery string.

[0123] As a specific embodiment of the present utility model, as Figures 6 to 8 shown, the solar simulator 100 of this embodiment may include a light source 101 and a shaping component. Among them, the light source 101 is used to emit solar simulation light. The shaping component is used to shape the simulation light emitted by the light source 101 into a light spot with a preset cross-sectional shape; the preset shape is a rectangle or a square.

[0124] Specifically, in this embodiment, the shaping component shapes the light emitted by the light source 101 into a rectangular or square light spot, so that it can match the rectangular battery string, and can reduce the light loss as much as possible while meeting the light source 101 required for battery string detection.

[0125] Specifically, as Figure 9 shown, the shaping component of this embodiment may include a first fly-eye lens 160. The first fly-eye lens 160 is disposed on one side of the light source 101 to homogenize the simulation light and form a light with a preset shape and then emit it.

[0126] Specifically, in this embodiment, the first fly-eye lens 160 is disposed on one side of the light source 101, so that the light emitted from the light source 101 is more uniform after passing through the first fly-eye lens 160. When the first fly-eye lens 160 forms a preset shape, the light spot of the emitted light can be formed into a preset shape. The shape of the fly-eye lens is related to the shape of the irradiated target. Specifically, this shape can be changed according to actual needs. For example, when the solar simulator 100 of this embodiment needs to irradiate a solar cell with light, since the solar cell is generally rectangular, the fly-eye lens 160 is also designed to be rectangular, so that the light emitted from the first fly-eye lens 160 is rectangular when irradiating a plane. Of course, in other embodiments, the first fly-eye lens 160 can also be designed into shapes such as a square, a circle, an ellipse, etc., so that the light emitted from the first fly-eye lens 160 is square, circular, elliptical, etc. Preferably, the first fly-eye lens 160 of this embodiment is designed into a square or a rectangle.

[0127] Specifically, the first fly-eye lens 160 of this embodiment may include a plurality of sub-lenses 161, and each sub-lens 161 has a preset shape. For example, Figure 10The shape of the sub-lens 161 shown is square, while Figure 11 the shape of the sub-lens 161 shown is rectangular. The R value of the curved surface of each sub-lens 161 can be obtained through simulation design as needed. The material used for the first compound eye lens 160 is plastic. Specifically, the shape of the sub-lens 161 in this embodiment can also be freely designed as needed. Specifically, since the shape of the battery string irradiated in this embodiment is rectangular, in order to ensure that the light irradiated on the battery string is also basically rectangular, the shape of the sub-lens 161 of the first compound eye lens 160 in this embodiment is designed to be rectangular.

[0128] As a specific embodiment of the present invention, as Figures 6 - 8 shown, the solar simulator 100 in this embodiment may further include a dichroic mirror 140 and a spectrometer 150. Among them, the dichroic mirror 140 is disposed between the light source 101 and the first compound eye lens 160 to divide the simulated light emitted by the light source 101 into two beams, and one beam enters the first compound eye lens 160 and then exits after coming out of the dichroic mirror 140. The spectrometer 150 is disposed on the side of the dichroic mirror 140 to receive the other beam of light from the dichroic mirror 140, and then to perform real-time monitoring and feedback on the light emitted by the light source 101.

[0129] In this embodiment, the light source 101 irradiates light at the dichroic 140, and the dichroic mirror 140 divides the light into two beams. One beam irradiates on the target object (i.e., the battery string), and the other beam irradiates on the spectrometer 150, so that the light irradiating on the spectrometer 150 and the target object is the light at the same position, and further makes the properties of the light detected in the spectrometer 150 consistent with the properties of the light irradiating on the target object, thereby making the subsequent detection structure more accurate.

[0130] Specifically, the dichroic mirror 140 in this embodiment forms a 45-degree angle with the side where the light source 101 is disposed.

[0131] Specifically, as Figure 12 shown, the dichroic mirror 140 forms a 45-degree angle with the side where the light source 101 is disposed, so that after the light emitted by the light source 101 passes through the dichroic mirror 140, a part directly passes through the dichroic mirror 140 and exits, and a part is reflected by the dichroic mirror 140 and then exits.

[0132] If light sources 101 are provided above and on the side of the solar simulator 100, the light from the two light sources 101 can coincide at the dichroic mirror 140 and then be emitted. The light emitted by the upper simulation optical group 110 is irradiated into the dichroic mirror 140. Approximately 90% of the light is transmitted through the dichroic mirror 140, and approximately 10% of the light is reflected from the dichroic mirror 140 and emitted from the left side of the solar simulator 100. When the light emitted by the side simulation optical group 110 is irradiated into the dichroic mirror 140, approximately 90% of the light is reflected from the dichroic mirror 140, and approximately 10% of the light is transmitted through the dichroic mirror 140.

[0133] The solar simulator 100 of this embodiment further includes a second fly-eye lens 180. The second fly-eye lens 180 is disposed between the spectrometer 150 and the dichroic mirror 140 so that the light emitted by the light source 101 is homogenized by the second fly-eye lens 180 and then irradiated onto the spectrometer 150. Among them, the second fly-eye lens 180 is the same as the first fly-eye lens 160.

[0134] Specifically, the second fly-eye lens 180 can homogenize the light emitted from the dichroic mirror 140, and further make the light irradiated onto the spectrometer 150 more uniform after passing through the second fly-eye lens 180.

[0135] The shape of the second fly-eye lens 180 and the shape of the sub-lenses are consistent with those of the first fly-eye lens, ensuring that the light irradiated onto the spectrometer 150 and the emitted light are basically the same.

[0136] As a specific embodiment of the present utility model, as Figures 6 - 8 shown, the solar simulator 100 of this embodiment may further include a first Fresnel lens 170. The first Fresnel lens 170 may be disposed on the side of the first fly-eye lens 160 opposite to the light source 101, so that the light emitted from the first fly-eye lens 160 passes through the first Fresnel lens 170 and then is emitted.

[0137] Specifically, after the light emitted from the first fly-eye lens 160 passes through the first Fresnel lens 170 in this embodiment, the light can be focused on a certain plane, thereby realizing more collimated and uniform light spots at the focal plane.

[0138] As a specific embodiment of the present utility model, the solar simulator 100 of this embodiment may further include a second Fresnel lens 190. The second Fresnel lens 190 is disposed between the second fly-eye lens 180 and the spectrometer 150, and the light emitted from the second fly-eye lens 180 passes through the second Fresnel lens 190 and then is irradiated onto the spectrometer 150.

[0139] The second Fresnel lens 190 and the first Fresnel lens 170 in this embodiment use the same type of lens.

[0140] Specifically, the light source in the solar simulator 100 of this embodiment is an LED light source. The LED light source includes at least one set of simulation light groups 110. In each simulation light group 110, a plurality of LED lamp beads with different wavelengths are arranged, and the wavelength range of the light emitted by the LED lamp beads in each set of simulation light groups 110 is M to N; the light emitted by the LED lamp beads in all the simulation light groups 110 forms simulated sunlight that highly fits the AM1.5 spectrum; where M < N, and the range of M is 300nm ≤ M < 1200nm, and the range of N is 300nm < N ≤ 1200nm.

[0141] Specifically, the LED lamp beads in this embodiment can be circular or square. By arranging a plurality of LED lamp beads to fit the AM1.5 solar spectrum, since the service life of LED lamp beads is generally about 2 years, the service life of the entire solar simulator 100 can be extended.

[0142] The light source 101 of this embodiment uses an LED light source, which reduces the energy consumption of the solar simulator 100 by a large amount compared with the thermal light source of the traditional solar simulator 100. Reducing energy consumption also reduces the afterglow effect of the IV test system. In addition, the light intensity output of the LED lamp beads of the solar simulator 100 in this embodiment is relatively stable. At a certain temperature, the current stability determines the light intensity stability, and the electronic control part can ensure that the light intensity fluctuation of each flash is small. The selected LED lamp beads of the solar simulator 100 in this embodiment only have light with wavelengths from 300nm to 1200nm, and there is no infrared light pollution and EL imaging interference.

[0143] In addition, the wavelength range of the light emitted by the lamp beads in each simulation light group 110 of this embodiment is M to N; M < N, and the range of M is 300nm ≤ M < 1200nm, and the range of N is 300nm < N ≤ 1200nm. The wavelength range of the light emitted by the lamp beads in all the simulation light groups 110 is 300nm to 1200nm. That is, the solar simulator 100 of this embodiment can finally select lamp beads in the wavelength range of 300nm to 1200nm for fitting, so that a variety of lamp beads can meet the high matching of fitting, and the finally obtained spectral grade reaches a relatively high grade (such as A+), and can be maintained at this grade for a long time, and can always maintain a very low spectral mismatch during the electrical performance detection process.

[0144] Specifically, each simulation light group 110 in this embodiment can fit to form light with a certain wavelength range, and the light rays of all the simulation light groups 110 are superimposed to simulate the AM1.5 solar spectrum.

[0145] As a specific embodiment of the present invention, as Figure 6As shown, all the simulated optical groups 110 of this embodiment are arranged on the same side of the solar simulator 100. In the wavelength range M to N of the light emitted by the lamp beads of each simulated optical group 110, M is equal to 300 nm and N is equal to 1200 nm.

[0146] Specifically, when all the simulated optical groups 110 of this embodiment are arranged on the same side of the solar simulator 100, since the sunlight simulation in the solar simulator 100 is completely carried out by the light emitted by the simulated optical groups 110 on this side, the wavelength of the light emitted by it must cover all wavelength ranges, that is, from 300 nm to 1200 nm. Of course, the number of simulated optical groups 110 on the same side can be one or more. When the number of simulated optical groups 110 is one, the lamp beads inside it can be arranged in an array according to the shape and size of the side of the solar simulator 100. When the number of simulated optical groups 110 is multiple, multiple simulated lights can be arranged in an array according to the shape and size of the side of the solar simulator 100.

[0147] As another specific embodiment of the present utility model, as Figure 7 and Figure 8 shown, some of the simulated optical groups 110 of this embodiment are arranged on the first side 120 (such as the upper side in the figure) of the solar simulator 100. In the wavelength range M to X of the light emitted by the lamp beads of each simulated optical group 110 on the first side 120, where M is equal to 300 nm and 300 nm < X < 1200 nm. The other simulated optical groups 110 are arranged on the second side 130 (such as the right side in the figure) of the solar simulator 100. The wavelength of the light emitted by the lamp beads of each simulated optical group 110 on the second side 130 is X to N; where 300 nm < X < 1200 nm and N is equal to 1200 nm. Among them, the first side 120 and the second side 130 are perpendicular to each other.

[0148] As another specific embodiment of the present utility model, as Figure 7 and Figure 8 shown, some of the simulated optical groups 110 of this embodiment are arranged on the first side 120 of the solar simulator 100. In the wavelength range of X to N of the light emitted by the lamp beads of each simulated optical group 110 on the first side 120; where 300 nm < X < 1200 nm and N is equal to 1200 nm; the other simulated optical groups 110 are arranged on the second side 130 of the solar simulator 100. The wavelength of the light emitted by the lamp beads of each simulated optical group 110 on the second side 130 is M to X; where M is equal to 300 nm and 300 nm < X < 1200 nm; among them, the first side 120 and the second side 130 are perpendicular to each other.

[0149] Specifically, the first side 120 in this embodiment can be the upper side of the solar simulator 100, and the second side 130 can be the side of the solar simulator 100 ( Figure 7 and Figure 8 setting the light source on the right side in is just one of the embodiments). According to the above two embodiments, the wavelength range of all the simulation light groups 110 located on the two sides is from 300 nm to 1200 nm. However, the wavelength range of the light emitted by the simulation light groups 110 located on the first side 120 and the wavelength range of the light emitted by the simulation light groups 110 located on the second side 130 cannot intersect or mix with each other.

[0150] Specifically, the lamp beads of each simulation light group 110 are arranged in an array.

[0151] Specifically, each side of the solar simulator 100 can include multiple simulation light groups 110, and the multiple simulation light groups 110 are arranged in an array. Specifically, 4 simulation light groups 110 are provided at each side of the solar simulator 100 in this embodiment.

[0152] When all the simulation light groups 110 are arranged on the upper surface of the solar simulator 100, the angle between the dichroic mirror 140 and the upper surface is 45 degrees. The light emitted by the simulation light groups 110 irradiates on the dichroic mirror 140, and about 90% of the light is transmitted through the dichroic mirror 140, and about 10% of the light is reflected from the dichroic mirror 140 and emitted from the side of the solar simulator 100 (such as Figure 7 the left side in).

[0153] When some of the simulation light groups 110 are arranged on the upper side of the solar simulator 100 and some of the simulation light groups 110 are arranged on the side of the solar simulator 100 (such as Figure 7 the right side in), the angles between the dichroic mirror 140 and the upper side and the side are both 45°. The light emitted by the simulation light groups 110 on the upper side irradiates on the dichroic mirror 140, and about 90% of the light is transmitted through the dichroic mirror 140, and about 10% of the light is reflected from the dichroic mirror 140 and emitted from the left side of the solar simulator 100. When the light emitted by the simulation light groups 110 on the side irradiates on the dichroic mirror 140, about 90% of the light is reflected from the dichroic mirror 140, and about 10% of the light is transmitted through the dichroic mirror 140.

[0154] Specifically, preferably in this embodiment, simulation light groups 110 are arranged on both the upper surface and the side of the solar simulator 100. In this way, the number or area of the simulation light groups 110 located on the same side can be reduced, and then the area of the dichroic mirror 140 can be reduced, and further the cost can be reduced.

[0155] In addition, since the reflectivity and transmittance of the dichroic mirror 140 are related to the coating on it, the coating parameters can be designed according to the classification of the light wavelength of the lamp beads to achieve the design of the reflectivity and transmittance of the dichroic mirror 140 in different directions. In this embodiment, the wavelengths of the light emitted by the simulation optical groups 110 on the upper side and the side of the solar simulator 100 do not cross, which can reduce the manufacturing difficulty of the dichroic mirror 140, and reduce the manufacturing cycle and cost of the dichroic mirror 140.

[0156] When only the simulation optical group 110 is provided on the upper surface of the solar simulator 100, the spectrometer 150 is arranged on the left side of the solar simulator 100, so that the light reflected from the dichroic mirror 140 can be received. When the simulation optical groups 110 are provided on both the upper side and the right side of the solar simulator 100, the spectrometer 150 is arranged on the left side of the solar simulator 100, which can receive the light reflected by the light emitted by the simulation light on the upper side in the dichroic mirror 140, and at the same time, it can also receive the light transmitted by the light emitted by the simulation optical group 110 on the right side in the dichroic mirror 140. The spectrometer 150 is used to monitor the light beam in real time, collect spectral data, realize the monitoring of the spectrum and light intensity of the light source, and the monitored spectrum and light intensity are the light at the same position as the spectrum and light intensity irradiated on the target object, so as to improve the accuracy and consistency of the detection, so that the spectrum and light intensity of the light source can be adjusted in real time subsequently to meet the detection requirements and improve the accuracy of the detection results.

[0157] As a specific embodiment of the present utility model, as Figure 8 shown, each group of simulation optical groups 110 in this embodiment may further include a plurality of lamp cups 111, each lamp cup 111 is matched with one of the lamp beads, and each lamp cup 111 is closely attached to the corresponding lamp bead, so that the light emitted by the lamp bead is converged by the corresponding lamp cup 111 and then emitted.

[0158] In this embodiment, the lamp cup 111 collimates the divergent light emitted by the lamp bead.

[0159] As another specific embodiment of the present utility model, as Figure 13 shown, the light source 101 in this embodiment is a xenon lamp light source. Among them, the shaping component may include a lamp cover arranged outside the xenon lamp 102, and the lamp cover has an opening, and the shape of the opening is a preset shape.

[0160] Specifically, by directly arranging a lamp cover outside the xenon lamp 102, a light spot with a preset shape is formed on the xenon lamp 102, so that the shape of the battery string can be matched, and thus the detection requirements can be met.

[0161] As a specific embodiment of the present utility model, the solar simulator 100 of this embodiment may further include a filter, which is arranged on one side of the xenon light source, so that the light emitted by the xenon lamp 102 forms simulated sunlight that highly fits the AM1.5 spectrum after passing through the filter 103.

[0162] In this embodiment, the filter forms simulated sunlight that highly fits the AM1.5 spectrum from the light emitted by the xenon lamp, thereby meeting the light source required for the IV test of the battery string.

[0163] As a specific embodiment of the present utility model, the solar simulator 100 of this embodiment may further include a light homogenizing plate 104, which is arranged on the side of the filter 103 away from the xenon light source, so that the light emitted from behind the filter 103 is homogenized by the light homogenizing plate 104 and then emitted.

[0164] The solar simulator 100 of this embodiment may further include a light homogenizing plate 104, so that the light irradiated by the xenon lamp 102 is more uniform after passing through the light homogenizing plate 104.

[0165] At this point, those skilled in the art should recognize that although multiple exemplary embodiments of the present utility model have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present utility model can still be directly determined or derived from the content disclosed in the present utility model without departing from the spirit and scope of the present utility model. Therefore, the scope of the present utility model should be understood and determined to cover all these other variations or modifications.

Claims

1. A battery string detection device for performing IV performance detection on a battery string, characterized in that, Comprising: A frame; A bearing assembly, disposed on the frame, for bearing the battery string; At least one solar simulator, which is arranged on one side of the bearing assembly for providing a light source; wherein, the cross-sectional shape of the light emitted by the at least one solar simulator matches the shape of the battery string and covers the battery string; and An IV tester, which includes a probe row in contact with the battery string, and the IV performance of the battery string is detected through the probe row.

2. The battery string detection device according to claim 1, wherein It further includes a homogenizing sheet, which is arranged between the at least one solar simulator and the battery string, so that the light emitted by the solar simulator irradiates the battery string after passing through the homogenizing sheet.

3. The battery string detection device according to claim 2, wherein The homogenizing sheet includes a grid glass, and a plurality of unevenly arranged grid points are provided on its surface, so that the light emitted by the solar simulator is homogenized after passing through the grid points.

4. The battery string detection device according to claim 2, wherein The number of the at least one solar simulator is multiple, and the light emitted by adjacent solar simulators overlaps at least partially before irradiating the homogenizing sheet; the light spots emitted by the multiple solar simulators form a continuous homogenized light spot that matches the shape of the battery string after passing through the homogenizing sheet, and the homogenized light spot covers all areas of the battery string.

5. The battery string detection device according to claim 1, wherein The bearing assembly includes: A support frame; A carrier plate, arranged at the support frame, and the carrier plate is used for bearing the battery string; At least one first driving component; and A fixing component, which is used for supporting the probe row and driving the probe row to move along a first preset direction under the drive of the first driving component; wherein, the first preset direction is the direction in which the battery strings extend side by side.

6. The battery string detection device according to claim 5, wherein Each of the first driving components includes: A motor; A driving wheel, which rotates under the drive of the motor; and A transmission belt, arranged on the driving wheel to move when the driving wheel rotates.

7. The battery string detection device according to claim 6, wherein The fixing component includes: A gantry, which is connected to the transmission belt to drive the gantry to move along the first preset direction when the transmission belt moves; A fixing seat, used for fixing the probe row, and the fixing seat is connected to the gantry to drive the probe row to move along the first preset direction when the gantry moves; and A slide table electric cylinder, which is arranged between the gantry and the fixing seat to drive the fixing seat to move relative to the carrier plate along a second preset direction, so that the probe row approaches or moves away from the battery string; wherein, the second preset direction is perpendicular to the first preset direction.

8. The battery string detection device according to claim 5, wherein At least one through hole is provided at the carrier plate; The carrying component further includes an adsorption component, which is arranged at the through hole. The adsorption component is configured to blow air into the through hole so as to adsorb the battery string at the carrier plate.

9. The battery string detection device according to claim 7, wherein it further includes a second driving component, which is connected to the support frame to drive the support frame to move along a third preset direction; wherein, the third preset direction is perpendicular to the first preset direction, and the third preset direction is perpendicular to the second preset direction.

10. The battery string detection device according to any one of claims 1-9, wherein it further includes a temperature control component, and the temperature control component includes: a temperature detection device, which is arranged on one side of the battery string and is used to detect the temperature of the battery string; a control module, which is connected to the temperature detection device to issue a control instruction according to the temperature detected by the temperature detection device; and a cooling device, which is arranged on one side of the battery string and is used to receive the control instruction of the control module and then adjust the fluid flow rate so that the temperature of the battery string is within a preset range.

11. The battery string detection device according to any one of claims 1-9, wherein the solar simulator includes: a light source, which is used to emit solar simulation light; and a shaping component, which is used to shape the simulation light emitted by the light source into a light spot with a preset cross-sectional shape; the preset shape is a rectangle or a square.

12. The battery string detection device according to claim 11, wherein the shaping component includes a first fly-eye lens, and the first fly-eye lens is arranged on one side of the light source to homogenize the simulation light and form the light with the preset shape and then emit it.

13. The battery string detection device according to claim 12, wherein the first fly-eye lens includes a plurality of sub-lenses, and each sub-lens has the preset shape.

14. The battery string detection device according to claim 12, wherein the solar simulator further includes: a dichroic mirror, which is arranged between the light source and the first fly-eye lens to divide the simulation light emitted by the light source into two beams. One beam enters the first fly-eye lens after coming out of the dichroic mirror and then is emitted; and a spectrometer, which is arranged on the side of the dichroic mirror to receive the other beam of light of the dichroic mirror, and then perform real-time monitoring and feedback on the light emitted by the light source.

15. The battery string detection device according to claim 14, wherein the dichroic mirror forms a 45-degree angle with the side where the light source is arranged.

16. The battery string detection device according to claim 14, wherein the solar simulator further includes a second fly-eye lens, and the second fly-eye lens is arranged between the spectrometer and the dichroic mirror to homogenize the light emitted by the light source through the second fly-eye lens and then irradiate it to the spectrometer; wherein, the second fly-eye lens is the same as the first fly-eye lens.

17. The battery string detection device according to claim 16, wherein the solar simulator further includes: A first Fresnel lens, which is disposed on a side of the first compound eye lens opposite to the light source, such that light emitted from the first compound eye lens passes through the first Fresnel lens and then exits; and A second Fresnel lens, which is disposed between the second compound eye lens and the spectrometer, so that light emitted from the light source passes through the second compound eye lens and the second Fresnel lens and then irradiates into the spectrometer.

18. The battery string detection device according to claim 11, wherein The light source is an LED light source; the LED light source includes at least one set of simulated light groups, and each of the simulated light groups is provided with a plurality of LED beads of different wavelengths, and the wavelength range of the light emitted by the LED beads in each of the simulated light groups is M to N; the light emitted by the LED beads in all of the simulated light groups forms simulated sunlight that highly fits the AM1.5 spectrum; wherein, M < N, and the range of M is 300nm ≤ M < 1200nm, and the range of N is 300nm < N ≤ 1200nm.

19. The battery string detection device according to claim 18, wherein All of the simulated light groups are disposed on the same side of the solar simulator, and in the wavelength range M to N of the light emitted by the beads of each of the simulated light groups, M is equal to 300nm and N is equal to 1200nm.

20. The battery string detection device according to claim 18, wherein Some of the simulated light groups are disposed on a first side of the solar simulator, and the wavelength range of the light emitted by the beads of each of the simulated light groups on the first side is M to X, wherein, M is equal to 300nm, and 300nm < X < 1200nm; The other simulated light groups are disposed on a second side of the solar simulator, and the wavelength of the light emitted by the beads of each of the simulated light groups on the second side is X to N; wherein, 300nm < X < 1200nm and N is equal to 1200nm; wherein, the first side and the second side are perpendicular to each other.

21. The battery string detection device according to claim 18, wherein Some of the simulated light groups are disposed on a first side of the solar simulator, and the wavelength range of the light emitted by the beads of each of the simulated light groups on the first side is X to N; wherein, 300nm < X < 1200nm and N is equal to 1200nm; The other simulated light groups are disposed on a second side of the solar simulator, and the wavelength of the light emitted by the beads of each of the simulated light groups on the second side is M to X; wherein, M is equal to 300nm and 300nm < X < 1200nm; wherein, the first side and the second side are perpendicular to each other.

22. The battery string detection device according to claim 19 or 20, wherein Each side of the solar simulator has a plurality of the simulated light groups, and the plurality of simulated light groups are arranged in an array; The LED beads of each of the simulated light groups are arranged in an array.

23. The battery string detection device according to claim 18, wherein Each of the simulation optical units further includes a plurality of lamp cups, each of the lamp cups being matched with one of the LED lamp beads, and each of the lamp cups being closely attached to the corresponding LED lamp bead, so that the light emitted by the LED lamp bead is converged by the corresponding lamp cup and then emitted.

24. The battery string detection device according to claim 11, wherein the light source is a xenon lamp light source, the shaping component includes a lamp cover disposed outside the xenon lamp, and the lamp cover has an opening, and the shape of the opening is the preset shape.

25. The battery string detection device according to claim 24, wherein the solar simulator further includes a filter disposed on one side of the xenon lamp light source, so that the light emitted by the xenon lamp forms simulated sunlight that highly fits the AM1.5 spectrum after passing through the filter.

26. The battery string detection device according to claim 25, wherein the solar simulator further includes a light homogenizing plate disposed on the side of the filter away from the xenon lamp light source, so that the light emitted from behind the filter is homogenized by the light homogenizing plate and then emitted.

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