Photovoltaic cell test probe row

Abstract

The invention relates to the technical field of photovoltaic battery piece testing, in particular to a photovoltaic battery piece testing probe row which comprises a base body. The test probe comprises a tube body, the tube body is uniformly, vertically and slidably connected in the positioning hole of the seat body and is connected with a self-adaptive height mechanism arranged on the surface of the seat body, and a first spring, an inclined block cylinder and a probe head are sequentially arranged in the tube body; vibration suppression mechanisms are respectively arranged at the joints of the cylindrical surface of the inclined block, the surface of one end of the needle inside the tube body and the inner wall of the tube body. The structure is reasonable, spring pressure is uniformly transmitted through the inclined block cylinder design, and the probe is prevented from being damaged; a vibration suppression mechanism is integrated, so that the damping ratio of the test probe is greatly improved, high-frequency vibration is effectively absorbed, and the signal-to-noise ratio of a detection signal is enhanced; the thermal expansion compensation mechanism accurately compensates needle deformation to ensure that data are correct; the self-adaptive height mechanism flexibly adapts to photovoltaic cells of different thicknesses, the detection efficiency and flexibility are remarkably improved, and the overall performance is excellent.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic cell testing, and in particular to a testing probe row for photovoltaic cells. Background Art

[0002] In the production process of photovoltaic cells, the electrical performance detection link plays a crucial role in quality control. As the core component of this link, the structural design of the probe row directly affects the accuracy and efficiency of detection. Currently, the probe row system mainly consists of two core modules: a seat body and testing probes. The testing probes are further refined into three key parts: a tube body, a spring, and a needle head. Although this traditional design can theoretically meet the basic electrical performance testing requirements, in actual industrial applications, several significant drawbacks have emerged:

[0003] Firstly, due to the structural design problem of the device itself, the mechanical stability is insufficient. During use, the spring pressure cannot be evenly transmitted to the needle head, resulting in the probe being offset or damaged due to local stress concentration, which seriously affects the accuracy of detection.

[0004] Secondly, the change in ambient temperature will cause the device to deform, resulting in data differences and greatly reducing the detection accuracy.

[0005] Finally, the structural design of the device limits its applicability and it is difficult to flexibly adapt to photovoltaic cells of different thicknesses, which restricts the improvement of detection efficiency to a certain extent. Summary of the Invention

[0006] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0007] To this end, the object of the present invention is to provide a testing probe row for photovoltaic cells. The structure of the present invention is reasonable. The spring pressure is evenly transmitted through the inclined block cylinder design to prevent the probe from being damaged; a vibration suppression mechanism is integrated to greatly increase the damping ratio of the testing probe, effectively absorb high-frequency vibrations, and enhance the signal-to-noise ratio of the detection signal; a thermal expansion compensation mechanism accurately compensates for the deformation of the needle head to ensure accurate data; an adaptive height mechanism flexibly adapts to photovoltaic cells of different thicknesses, significantly improving the detection efficiency and flexibility, and the overall performance is excellent.

[0008] To achieve the above object, the present invention provides a testing probe row for photovoltaic cells, including:

[0009] A seat body;

[0010] Testing probes: including a tube body, the tube body is uniformly and vertically slidably connected in the positioning holes of the seat body and is connected to an adaptive height mechanism provided on the surface of the seat body. A first spring, an inclined block cylinder, and a needle head are sequentially arranged inside the tube body. Among them,

[0011] One end of the first spring is fixedly connected to the inner top wall of the tube body, and the other end of the first spring is fixedly connected to the conical surface at the top of the inclined block cylinder. One end of the needle head is provided with a conical portion adapted to the conical surface and is in contact connection with the conical surface at the bottom of the inclined block cylinder. The other end of the needle head penetrates through the bottom of the tube body.

[0012] A thermal expansion compensation mechanism is provided on the inclined block cylinder.

[0013] Vibration suppression mechanisms are respectively provided at the joints between the surface of the inclined block cylinder and the surface of the end of the needle head located inside the tube body and the inner wall of the tube body.

[0014] In addition, a photovoltaic cell testing probe row proposed according to the above application may also have the following additional technical features:

[0015] Specifically, the tube body includes an upper tube body and a lower tube body. The upper tube body and the lower tube body are respectively vertically slidably connected to the inner walls of the positioning holes of the seat body and are connected by a middle connecting rod. The first spring is located inside the upper tube body, the needle head is located inside the lower tube body, the inclined block cylinder includes an upper inclined block column and a lower inclined block column, and the upper inclined block column and the lower inclined block column are connected by a thermal expansion compensation mechanism. The ends of the upper inclined block column and the lower inclined block column away from the thermal expansion compensation mechanism are respectively slidably connected to the inner walls of the upper tube body and the lower tube body.

[0016] Specifically, the thermal expansion compensation mechanism includes an upper threaded seat, a lower threaded seat, a positioning seat and a bimetal sheet. Among them, the upper threaded seat and the lower threaded seat are respectively threadedly connected to the bottom of the upper inclined block column and the top of the lower inclined block column. The positioning seat is uniformly fixedly connected to the bottom of the upper threaded seat, the bimetal sheet is uniformly fixedly connected to the top of the lower threaded seat, and one ends of multiple groups of bimetal sheets away from the top of the lower threaded seat are respectively hinged and fixed to the surfaces of multiple groups of positioning seats.

[0017] Specifically, the bimetal sheet includes an invar alloy sheet, an aluminum alloy sheet, a titanium alloy sheet and a copper alloy sheet arranged in sequence.

[0018] Specifically, through grooves are opened on the surface of the seat body at positions corresponding to the upper threaded seat and the lower threaded seat.

[0019] Specifically, annular grooves are respectively opened on the surface of the end of the upper inclined block column located inside the upper tube body, the surface of the end of the lower inclined block column located inside the lower tube body, and the surface of the end of the needle head located inside the lower tube body. The vibration suppression mechanisms are respectively arranged in the three groups of annular grooves, and the vibration suppression mechanism is a low-friction thin-layer silica gel with a thickness of 0.5 - 1 mm.

[0020] Specifically, the adaptive height mechanism includes a side mounting portion, an adjusting rod, a second spring, an arc contact head, and a synchronization seat. Among them, the side mounting portion is uniformly and fixedly connected to the surface of the seat body. The adjusting rod is vertically slidably connected to the inner wall of the side mounting portion, and a second spring is fixedly connected between the adjusting rod and the inner wall of the side mounting portion. One end of the adjusting rod penetrates through the bottom of the side mounting portion and is fixedly connected with the arc contact head. The synchronization seat is vertically slidably connected to the surface of the side mounting portion and is threadedly connected to the top of the upper tube body. One end of the synchronization seat penetrates into the interior of the side mounting portion and is fixedly connected with the adjusting rod.

[0021] Specifically, both ends of the first spring are ground flat and tightened. A column groove is formed on the surface of the conical surface at the top of the upper inclined block column. One end of the first spring is located in the column groove and is fixedly connected to the inner wall of the column groove. Additional aspects and advantages of the present invention will be partially given in the following description, and some will become obvious from the following description, or will be understood through the practice of the present invention.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. The structure of the present invention is reasonable. An inclined block cylinder is arranged between the spring and the needle tip on the test probe of the present invention. The inclined block cylinder can evenly transfer the spring pressure to the needle tip, avoiding probe deviation or damage caused by local stress concentration. The design of the inclined portion restricts the lateral movement of the probe, ensuring the precise alignment of the needle tip with the contact point of the photovoltaic component, reducing the fluctuation of the contact resistance, significantly improving its operating stability, and having a good use effect.

[0024] 2. The present invention also provides a vibration suppression mechanism on the test probe. The vibration suppression mechanism can significantly increase the damping ratio of the test probe, effectively absorb the high-frequency vibration energy, improve the signal-to-noise ratio of the detection signal, and further improve the use effect.

[0025] 3. The present invention also provides a thermal expansion compensation mechanism on the test probe. When the needle tip deforms due to environmental changes, the thermal expansion compensation mechanism can respond synchronously and change its shape, thereby effectively adjusting the distance between the upper threaded seat and the lower threaded seat to achieve precise dimensional compensation. This design significantly improves the use effect of the device and ensures its stability and accuracy under various conditions.

[0026] 4. The present invention also provides an adaptive height mechanism on the seat body. The adaptive height mechanism enables the test probe to easily adapt to photovoltaic cells of different thicknesses, greatly improving the flexibility and efficiency of detection, and having a good use effect. Description of the Drawings

[0027] The above-mentioned and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0028] Figure 1 Schematic diagram of a test probe row structure for a photovoltaic cell of the present invention;

[0029] Figure 2 Schematic diagram of a test probe in a test probe row for a photovoltaic cell of the present invention;

[0030] Figure 3 Schematic diagram of an inclined block cylinder structure in a test probe row for a photovoltaic cell of the present invention;

[0031] Figure 4 Schematic diagram of a thermal expansion compensation mechanism structure in a test probe row for a photovoltaic cell of the present invention;

[0032] Figure 5 Schematic diagram of a multi-metal sheet structure in a test probe row for a photovoltaic cell of the present invention.

[0033] As shown in the figure:

[0034] 1. Base body; 2. Test probe; 21. Tube body; 22. First spring; 23. Inclined block cylinder; 24. Needle head;

[0035] 241. Conical part; 3. Adaptive height mechanism; 4. Thermal expansion compensation mechanism; 5. Vibration suppression mechanism;

[0036] 211. Upper tube body; 212. Lower tube body; 213. Middle connecting rod; 231. Upper inclined block column; 232. Lower inclined block column;

[0037] 41. Upper threaded seat; 42. Lower threaded seat; 43. Positioning seat; 44. Multi-metal sheet;

[0038] 441. Invar alloy sheet; 442. Aluminum alloy sheet; 443. Titanium alloy sheet; 444. Copper alloy sheet;

[0039] 11. Through groove; 51. Annular groove;

[0040] 31. Side mounting part; 32. Adjusting rod; 33. Second spring; 34. Arc contact head; 35. Synchronous seat. Detailed implementation method

[0041] The following details the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0042] The following will describe a test probe row for a photovoltaic cell according to an embodiment of the present invention in conjunction with the accompanying drawings.

[0043] As Figures 1-5 shown, a test probe row for a photovoltaic cell according to an embodiment of the present invention includes:

[0044] A seat body 1;

[0045] A test probe 2: including a tube body 21, the tube body 21 is uniformly and vertically slidably connected in the positioning holes of the seat body 1 and is connected to an adaptive height mechanism 3 provided on the surface of the seat body 1. Inside the tube body 21, a first spring 22, an inclined block cylinder 23, and a needle head 24 are sequentially arranged. Among them,

[0046] One end of the first spring 22 is fixedly connected to the inner top wall of the tube body 21, and the other end of the first spring 22 is fixedly connected to the conical surface at the top of the inclined block cylinder 23. One end of the needle head 24 is provided with a conical portion 241 adapted to the conical surface and is in contact connection with the conical surface at the bottom of the inclined block cylinder 23. The other end of the needle head 24 penetrates out of the bottom of the tube body 21;

[0047] A thermal expansion compensation mechanism 4 is provided on the inclined block cylinder 23;

[0048] Vibration suppression mechanisms 5 are respectively provided at the connection between the surface of the inclined block cylinder 23 and the surface of the end of the needle head 24 located inside the tube body 21 and the inner wall of the tube body 21.

[0049] Specifically, the structure of the present invention is reasonable. The use of the inclined block cylinder 23 ingeniously solves the problem that the spring pressure cannot be evenly transmitted to the needle head 24, thereby effectively avoiding the phenomenon of offset or damage of the probe 24 caused by local stress concentration. The damping ratio of the test probe 2 is significantly enhanced through the vibration suppression mechanism 5, which can efficiently absorb high-frequency vibration energy, and thus greatly improves the signal-to-noise ratio of the detection signal. The thermal expansion compensation mechanism 4 can accurately compensate for the deformation of the needle head 24 caused by temperature changes, thereby ensuring the accuracy of the data and avoiding data errors. The adaptive height mechanism 3 enables the device to easily adapt to photovoltaic cells of different thicknesses, greatly improving the flexibility and efficiency of detection, and having a good use effect.

[0050] In an embodiment of the present invention, as Figure 2As shown in the figure, the tube body 21 includes an upper tube body 211 and a lower tube body 212. The upper tube body 211 and the lower tube body 212 are respectively vertically slidably connected to the inner wall of the positioning hole of the seat body 1 and are connected by a middle connecting rod 213. The first spring 22 is located inside the upper tube body 211, the needle head 24 is located inside the lower tube body 212, the inclined block cylinder 23 includes an upper inclined block column 231 and a lower inclined block column 232, and the upper inclined block column 231 and the lower inclined block column 232 are connected by a thermal expansion compensation mechanism 4. The ends of the upper inclined block column 231 and the lower inclined block column 232 far from the thermal expansion compensation mechanism 4 are respectively slidably connected to the inner walls of the upper tube body 211 and the lower tube body 212.

[0051] Specifically, the split design of the tube body 21 and the inclined block cylinder 23 not only simplifies the installation process of the thermal expansion compensation mechanism 4 but also ensures that the mechanism can smoothly contact the external air. This design enables the thermal expansion compensation mechanism 4 to more sensitively respond to environmental temperature changes, achieve synchronous deformation with the needle head 24, thereby precisely adjusting and compensating for the dimensional changes caused by temperature changes, and greatly improving the overall performance and adaptability of the system.

[0052] In an embodiment of the present invention, as Figure 4 shown, the thermal expansion compensation mechanism 4 includes an upper threaded seat 41, a lower threaded seat 42, a positioning seat 43, and a bimetal sheet 44. Among them, the upper threaded seat 41 and the lower threaded seat 42 are respectively threadedly connected to the bottom of the upper inclined block column 231 and the top of the lower inclined block column 232. The positioning seat 43 is uniformly fixedly connected to the bottom of the upper threaded seat 41, and the bimetal sheet 44 is uniformly fixedly connected to the top of the lower threaded seat 42. One ends of multiple groups of bimetal sheets 44 far from the top of the lower threaded seat 42 are respectively hinged and fixed to the surfaces of multiple groups of positioning seats 43.

[0053] Specifically, the structural design of the thermal expansion compensation mechanism 4 is ingenious. Its core lies in the ingenious use of the bimetal sheet 44 and its precise connection with the threaded seats (i.e., the upper threaded seat 41 and the lower threaded seat 42). In practical applications, with the fluctuation of the environmental temperature, the bimetal sheet 44 can keenly capture these changes and keep synchronous deformation with the needle head 24. This deformation process further drives the distance between the upper threaded seat 41 and the lower threaded seat 42 to be adjusted accordingly, realizing a dynamic and synchronous needle head 24 position adjustment mechanism. This mechanism not only ensures precise compensation of dimensions but also significantly improves the stability and adjustment accuracy of the entire system under temperature change conditions, thus greatly optimizing the use effect.

[0054] In an embodiment of the present invention, as Figure 5 shown, the bimetal sheet 44 includes an invar alloy sheet 441, an aluminum alloy sheet 442, a titanium alloy sheet 443, and a copper alloy sheet 444 arranged in sequence.

[0055] Specifically, in order to further improve the fineness of temperature regulation, we adopt a multi-metal sheet 44 structure composed of multiple groups of metal sheets. The characteristics of each group of metal sheets are precisely calculated and optimized to ensure that when the temperature changes, it can respond to the environmental temperature change and more subtly adjust the distance between the upper threaded seat 41 and the lower threaded seat 42. It can achieve more precise and sensitive dimensional compensation. This design of the multi-metal sheet 44 greatly improves the use effect of the device and meets the requirements of high-precision adjustment.

[0056] In an embodiment of the present invention, as Figure 1 shown, through grooves 11 are opened at positions on the surface of the base body 1 corresponding to the upper threaded seat 41 and the lower threaded seat 42.

[0057] Specifically, by opening the through grooves 11 in the structure, the multi-metal sheet 44 can be fully exposed to the same environment as the needle 24. When the needle 24 deforms due to environmental changes, the multi-metal sheet 44 can synchronously respond and change its shape, thereby effectively adjusting the distance between the upper threaded seat 41 and the lower threaded seat 42 to achieve precise dimensional compensation. This design significantly improves the use effect of the device and ensures its stability and accuracy under various conditions.

[0058] In an embodiment of the present invention, as Figure 2 shown, annular grooves 51 are respectively opened on the surface of one end of the upper inclined block column 231 located inside the upper tube body 211, the surface of one end of the lower inclined block column 232 located inside the lower tube body 212, and the surface of one end of the needle 24 located inside the lower tube body 212. Vibration suppression mechanisms 5 are respectively arranged in the three groups of annular grooves 51. The vibration suppression mechanism 5 is a low-friction thin-layer silica gel with a thickness of 0.5 - 1 mm.

[0059] Specifically, by setting the low-friction thin-layer silica gel on the upper inclined block column 231, the lower inclined block column 232, and the needle 24, the damping ratio of the test probe 2 can be significantly improved, effectively absorbing high-frequency vibration energy and enhancing the signal-to-noise ratio of the detection signal, with good use effect.

[0060] In an embodiment of the present invention, as Figure 2 shown, the adaptive height mechanism 3 includes a side mounting portion 31, an adjusting rod 32, a second spring 33, an arc contact head 34, and a synchronization seat 35. Among them, the side mounting portion 31 is uniformly fixedly connected to the surface of the base body 1. The adjusting rod 32 is vertically slidably connected to the inner wall of the side mounting portion 31, and a second spring 33 is fixedly connected between the adjusting rod 32 and the inner wall of the side mounting portion 31. One end of the adjusting rod 32 penetrates through the bottom of the side mounting portion 31 and is fixedly connected with the arc contact head 34. The synchronization seat 35 is vertically slidably connected to the surface of the side mounting portion 31 and is threadedly connected to the top of the upper tube body 211. One end of the synchronization seat 35 penetrates into the inside of the side mounting portion 31 and is fixedly connected with the adjusting rod 32.

[0061] It should be noted that a strip-shaped groove facilitating the vertical sliding of the synchronization seat 35 is formed on the surface of the side mounting portion 31 described in this embodiment.

[0062] It can be understood that in order to ensure the stable performance of multiple groups of multi-metal sheets 44, through grooves 11 are also formed at positions on the surface of the side mounting portion 31 corresponding to the upper threaded seat 41 and the lower threaded seat 42.

[0063] Specifically, the design of the adaptive height mechanism 3 aims to automatically adjust the installation height of the test probe 2 to ensure that it can accurately adapt to photovoltaic cells of various thicknesses, thereby improving the accuracy and effectiveness of the test. The core components of this mechanism include an adjustment rod 32, a second spring 33, an arc contact head 34, and a synchronization seat 35. Their connection relationship and working principle are as follows: When the thickness of the photovoltaic cell changes, the arc contact head 34 first contacts the cell. Since the contact head is designed in an arc shape, it can be flexibly adjusted according to the thickness of the cell. This adjustment process immediately triggers the up and down movement of the adjustment rod 32 and the synchronization seat 35. At the same time, the second spring 33 plays a key buffering and adjustment role in this process. It will stretch or compress accordingly with the movement of the adjustment rod 32. As the height of the synchronization seat 35 changes, the test probe 2 also synchronously adjusts its height, thereby ensuring that the probe can always maintain an appropriate contact pressure with the photovoltaic cell. This adaptive adjustment mechanism enables the test probe 2 to accurately measure photovoltaic cells of different thicknesses, improving the accuracy and reliability of the test. Through its ingenious structural design and connection relationship, the adaptive height mechanism 3 realizes the accurate measurement of photovoltaic cells of different thicknesses, improving the accuracy and effectiveness of the test.

[0064] In an embodiment of the present invention, as Figure 2 shown, both ends of the first spring 22 are ground flat and tightened. A column groove is formed on the conical surface at the top of the upper inclined block column 231. One end of the first spring 22 is located in the column groove and fixedly connected to the inner wall of the column groove.

[0065] It should be noted that the column groove described in this embodiment is not shown in the figure.

[0066] Specifically, both ends of the first spring 22 are ground flat and closely fitted. This design aims to increase the contact area between the first spring 22 and its supporting surface. By doing so, it can be ensured that within the working elastic force range of the first spring 22, the spring axis is as unlikely as possible to be distorted, thereby maintaining the reverse extension of the acting force direction. In addition, the provided column groove helps the stable connection between the first spring 22 and the upper inclined block column 231, further preventing the spring axis from being distorted and improving the overall use effect.

[0067] In summary, for a photovoltaic cell test probe row according to an embodiment of the present invention, the structure of the present invention is reasonable. The ingenious design of the inclined block cylinder 23 solves the problem that the spring pressure cannot be evenly transmitted to the needle tip, thus effectively avoiding the offset or damage of the probe caused by local stress concentration. The damping ratio of the test probe 2 is significantly enhanced by the vibration suppression mechanism 5, which can efficiently absorb high-frequency vibration energy, thereby greatly improving the signal-to-noise ratio of the detection signal. The thermal expansion compensation mechanism 4 can accurately compensate for the deformation of the needle tip 24 caused by temperature changes, thus ensuring the accuracy of the data and avoiding data errors. The adaptive height mechanism 3 enables the device to easily adapt to photovoltaic cells of different thicknesses, greatly improving the flexibility and efficiency of detection.

[0068] In the description of this specification, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0069] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0070] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A photovoltaic cell testing probe row, characterized in that, include: base(1); The test probe (2) comprises a tube body (21), the tube body (21) is evenly and vertically slidably connected to the positioning hole of the base body (1), and is connected to an adaptive height mechanism (3) arranged on the surface of the base body (1), and a first spring (22), a ramp cylinder (23) and a needle (24) are arranged in sequence inside the tube body (21), wherein: One end of the first spring (22) is fixedly connected to the inner top wall of the tube body (21), and the other end of the first spring (22) is fixedly connected to the conical surface at the top of the inclined block cylinder (23). One end of the needle (24) is provided with a conical portion (241) adapted to the conical surface, and is in contact with the conical surface at the bottom of the inclined block cylinder (23). The other end of the needle (24) passes through the bottom of the tube body (21); The inclined block cylinder (23) is provided with a thermal expansion compensation mechanism (4); The surface of the inclined block cylinder (23) and the connection between the surface of one end of the needle (24) located inside the tube body (21) and the inner wall of the tube body (21) are respectively provided with a vibration suppression mechanism (5).

2. The photovoltaic cell testing probe row according to claim 1, wherein The tube body (21) comprises an upper tube body (211) and a lower tube body (212), the upper tube body (211) and the lower tube body (212) are respectively vertically slidably connected to the inner wall of the positioning hole of the seat body (1), and are connected through a middle connecting rod (213), the first spring (22) is located in the upper tube body (211), the needle head (24) is located in the lower tube body (212), the inclined block cylinder (23) comprises an upper inclined block column (231) and a lower inclined block column (232), the upper inclined block column (231) and the lower inclined block column (232) are connected through a thermal expansion compensation mechanism (4), and the ends of the upper inclined block column (231) and the lower inclined block column (232) away from the thermal expansion compensation mechanism (4) are respectively slidably connected to the inner walls of the upper tube body (211) and the lower tube body (212).

3. The photovoltaic cell testing probe row according to claim 1, characterized in that, The thermal expansion compensation mechanism (4) comprises an upper threaded seat (41), a lower threaded seat (42), a positioning seat (43) and a plurality of metal sheets (44), wherein the upper threaded seat (41) and the lower threaded seat (42) are respectively threadedly connected to the bottom of the upper inclined block column (231) and the top of the lower inclined block column (232), the positioning seat (43) is evenly fixedly connected to the bottom of the upper threaded seat (41), the plurality of metal sheets (44) are evenly fixedly connected to the top of the lower threaded seat (42), and the ends of the plurality of metal sheets (44) away from the top of the lower threaded seat (42) are respectively hingedly fixed to the surfaces of the plurality of positioning seats (43).

4. The photovoltaic cell testing probe row according to claim 3, wherein, The multi-metal sheet (44) comprises an indium alloy sheet (441), an aluminum alloy sheet (442), a titanium alloy sheet (443) and a copper alloy sheet (444) which are arranged in sequence.

5. The photovoltaic cell testing probe row according to claim 3, wherein, A through groove (11) is provided on the surface of the seat body (1) at positions corresponding to the positions of the upper thread seat (41) and the lower thread seat (42).

6. The photovoltaic cell testing probe row according to claim 2, characterized in that, One end surface of the upper inclined block column (231) located inside the upper pipe body (211), one end surface of the lower inclined block column (232) located inside the lower pipe body (212), and one end surface of the needle head (24) located inside the lower pipe body (212) are respectively provided with annular grooves (51). The vibration suppression mechanism (5) is respectively arranged in the three groups of annular grooves (51). The vibration suppression mechanism (5) is a low-friction thin-layer silica gel with a thickness of 0.5-1 mm.

7. The photovoltaic cell testing probe row according to claim 2, characterized in that, The adaptive height mechanism (3) includes a side mounting portion (31), an adjusting rod (32), a second spring (33), an arc-shaped contact head (34), and a synchronization seat (35). Among them, the side mounting portion (31) is uniformly fixedly connected to the surface of the seat body (1). The adjusting rod (32) is vertically slidably connected to the inner wall of the side mounting portion (31), and a second spring (33) is fixedly connected between the adjusting rod (32) and the inner wall of the side mounting portion (31). One end of the adjusting rod (32) penetrates out of the bottom of the side mounting portion (31) and is fixedly connected with the arc-shaped contact head (34). The synchronization seat (35) is vertically slidably connected to the surface of the side mounting portion (31) and is threadedly connected to the top of the upper pipe body (211). One end of the synchronization seat (35) penetrates into the inside of the side mounting portion (31) and is fixedly connected with the adjusting rod (32).

8. The photovoltaic cell testing probe row according to claim 2, wherein, Both ends of the first spring (22) are ground flat and tightly wound. A column groove is provided on the conical surface of the top of the upper inclined block column (231). One end of the first spring (22) is located in the column groove and is fixedly connected to the inner wall of the column groove.

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