Testing device for solar cell

Abstract

The utility model provides a solar cell testing device, and relates to the technical field of solar cells. The testing device of the solar cell can comprise a base and a measuring device. The base is used for supporting the battery piece. And the measuring equipment is positioned above the base. The measuring equipment can comprise a frame and at least one testing assembly arranged at the frame, each testing assembly can comprise a conductive metal belt capable of being in contact with the to-be-tested surface of the battery piece and a connecting assembly for connecting the two ends of the conductive metal belt to the frame, and the connecting assembly has elasticity. And the position of the connecting assembly at the frame is adjustable. As the position of the connecting assembly is adjustable at the frame, the measuring equipment can be adapted to battery pieces with different grid lines, and the application range is further expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cells, in particular to a testing device for solar cell sheets. Background Art

[0002] In recent years, the production of crystalline silicon solar cells has developed rapidly, and the solar industry has risen rapidly, which is bound to increase competition in the same industry. Reducing costs and increasing efficiency have become the main development goals of the solar manufacturing industry. Increasing the number of main grids on the cell can reduce Rs (series resistance) and reduce Isc (short-circuit current) losses caused by broken grids. However, the increase in the number of main grids will inevitably increase the consumption of silver paste, so in order to reduce silver consumption and reduce costs, people will make the traditional continuous main grid lines into many thin grid lines (or no main grid). Such a multi-grid line design will lead to poor test contact. The traditional epoxy resin probe rack itself is not conductive, and the probe structure of both PCB and epoxy resin has a large shielding area. The test contact is completely dependent on the contact between the probe head and the cell, and it is impossible to contact the silicon wafer with the surface.

[0003] In the current existing technology, in order to increase the contact area during testing, conductive voltage bars are used instead of traditional probe structures. However, the spacing of these conductive voltage bar brackets is fixed and cannot adapt to cells with different grid line spacings, so the accuracy is low and the application range is also limited. Utility Model Content

[0004] An object of the first aspect of the utility model is to provide a testing device for solar cell sheets, so as to solve the problem that the testing device in the prior art cannot detect cells with different grid line spacings.

[0005] In particular, the utility model provides a testing device for solar cell, which is used to test the electrical performance of the cell, comprising:

[0006] A base, used for supporting the battery cell;

[0007] A measuring device is located above the base, the measuring device includes a frame and at least one test component arranged on the frame, each of the test components includes a conductive metal belt capable of contacting the surface to be tested of the battery cell and a connecting component connecting both ends of the conductive metal belt to the frame, the connecting component is elastic, and the position of the connecting component on the frame is adjustable.

[0008] Optionally, the frame is provided with two connecting shafts arranged opposite to each other;

[0009] Each of the connecting components comprises an adjusting block, wherein the adjusting block is provided with a through hole and a slot connected to the through hole, and the through hole cooperates with the connecting shaft so that the adjusting block can move axially along the connecting shaft.

[0010] Optionally, each of the adjusting blocks is provided with a threaded hole at the slot, so that after the adjusting block reaches a preset position, the slot is locked by a fastener to fix the adjusting block.

[0011] Optionally, each of the connecting components further comprises a hook, a tension spring and an eight-shaped buckle connected in sequence, the hook is connected to the adjustment block, and the eight-shaped buckle is connected to the conductive metal belt.

[0012] Optionally, the measuring device further comprises an auxiliary positioning fixture, the number of the test components is multiple, the multiple test components are arranged in parallel and at intervals, and the auxiliary positioning fixture is used to adjust the spacing between the multiple test components.

[0013] Optionally, the base comprises:

[0014] Two carriers arranged opposite to each other, each of the carriers being provided with at least one card slot; and

[0015] At least one supporting member, each of the supporting members is parallel to the conductive metal strip, and two ends of each of the supporting members are respectively disposed at one of the slots of the two carriers.

[0016] Optionally, the number of the support members is the same as the number of the conductive metal strips, and when the measuring device measures the battery cell, each of the support members is arranged corresponding to one of the conductive metal strips.

[0017] Optionally, the number of the card slots at each carrier is multiple and arranged at intervals, and the number of the card slots at two carriers is equal and arranged correspondingly;

[0018] The number of the support members is multiple, and the number of the support members is the same as the number of the slots at one of the carriers, and the multiple support members are arranged in parallel and at intervals; the auxiliary positioning fixture includes at least one positioning protrusion of a preset size; the distance between the multiple slots of the carrier matches the size of the positioning protrusion.

[0019] Optionally, each of the support members has a protrusion, and the upper surfaces of the protrusions of the multiple support members together form a supporting surface for supporting the battery cell; and the upper surface of each protrusion is an arc-shaped structure, so that the supporting surface is an arc-shaped surface.

[0020] Optionally, the base further comprises:

[0021] A base for accommodating the carrier and the support member; and

[0022] Two pressing plates are connected to the base to fix the carrier and the support member at the base.

[0023] Optionally, each of the support members is provided with a first inclined surface near both ends;

[0024] A second inclined surface is provided at each of the pressing plates, and the second inclined surface cooperates with the first inclined surface to prevent the support member from moving.

[0025] Optionally, the base also includes a needle clamping plate, which is located under the base and is used to support the base. Two parallel guide grooves are provided on the needle clamping plate, and the extension direction of the guide grooves is perpendicular to the plane where the support member is located. The base can slide along the guide grooves and be fastened using fasteners after reaching a preset position.

[0026] The testing device of the present solution may include a base and a measuring device, which may include a frame and at least one testing component, which may include a conductive metal strip and a connecting component, which is elastic and has an adjustable position at the frame, so that the measuring device can adapt to battery cells with different grid lines, thereby increasing the scope of application.

[0027] The connection components of this solution are elastic, so that the test device has soft contact during testing, reducing hidden cracks or fragments of the battery. The measuring equipment of this solution uses a conductive metal belt, so that the conductive metal belt can fully contact the grid line of the battery cell, improving the detection accuracy.

[0028] This solution uses a support member to support the battery cell, and when the measuring equipment measures the battery cell, the conductive metal belt presses the battery cell. At this time, the conductive metal belt and the support member are set correspondingly, which not only ensures good contact, but also avoids hidden cracks or damage to the battery cell caused by the conductive metal belt pressing the battery cell.

[0029] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0031] Figure 1is a schematic three-dimensional diagram of a testing device for a solar cell according to a specific embodiment of the utility model;

[0032] Figure 2 It is a front view of a testing device for a solar cell according to a specific embodiment of the utility model;

[0033] Figure 3 is a schematic three-dimensional diagram of a measuring device according to a specific embodiment of the utility model;

[0034] Figure 4 is a top view of a measuring device according to a specific embodiment of the utility model;

[0035] Figure 5 is a front view of a measuring device according to a specific embodiment of the utility model;

[0036] Figure 6 is a schematic three-dimensional diagram of a test assembly according to a specific embodiment of the utility model;

[0037] Figure 7 is a front view of a test assembly according to a specific embodiment of the utility model;

[0038] Figure 8 is a bottom-up perspective view of a measuring device according to a specific embodiment of the utility model;

[0039] Fig. 9 is a schematic three-dimensional diagram of a base according to a specific embodiment of the utility model;

[0040] Fig.10 is a top view of a base according to a specific embodiment of the utility model;

[0041] Fig.11 It is a front view of a base according to a specific embodiment of the utility model;

[0042] Fig.12 It is a right side view of a base according to a specific embodiment of the utility model;

[0043] Fig.13 It is a front view of a support member according to a specific embodiment of the utility model.

[0044] Description of reference numerals:

[0045] Testing device-100; base-200; carrier-210; slot-211; support member-220; protrusion-221; upper surface-222; support surface-223; first inclined surface-224; base-230; pressure plate-240; second inclined surface-241; needle plate-250; guide groove-251; measuring device-300; frame-310; connecting shaft-311; testing component-320; conductive metal belt-321; connecting component-322; adjusting block-3221; through hole-3222; slot-3223; threaded hole-3224; hook-3225; tension spring-3226; figure-eight buckle-3227; auxiliary positioning fixture-323; positioning protrusion-3231; battery cell-400. DETAILED DESCRIPTION

[0046] In the description of this embodiment, it should be understood that the terms "length", "width", "height", "up", "down", "left", "right", "vertical", "horizontal", "bottom", "inside" and "outside" etc. indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] As a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, this embodiment provides a test device 100 for a solar cell, and the test device 100 for a solar cell is used to test the electrical properties of the cell. The test device 100 for a solar cell may include a base 200 and a measuring device 300. The base 200 is used to support the cell 400. The measuring device 300 is located above the base 200, and the measuring device 300 may include a frame 310 and at least one test component 320 arranged at the frame 310, each test component 320 includes a conductive metal strip 321 that can contact the surface to be tested of the cell 400 and a connecting component 322 that connects the two ends of the conductive metal strip 321 to the frame 310, the connecting component 322 is elastic, and the position of the connecting component 322 at the frame 310 is adjustable.

[0048] Specifically, the testing device 100 of this embodiment may include a base 200 and a measuring device 300, the measuring device 300 may include a frame 310 and at least one testing component 320, the testing component 320 may include a conductive metal strip 321 and a connecting component 322, the connecting component 322 is elastic, and the position of the connecting component 322 at the frame 310 is adjustable, so that the measuring device 300 can adapt to battery cells 400 with different grid lines, thereby increasing the scope of application.

[0049] Specifically, the conductive metal belt 321 of the present embodiment can be a gold-plated copper belt. The copper belt has a low cost and has a certain flexibility. The conductive metal belt 321 in the entire measuring device 300 is flexible. In addition, the connecting component 322 of the present embodiment is elastic, so that the test device 100 of the embodiment is in soft contact during testing, reducing hidden cracks or fragments of the battery. The measuring device 300 of the present embodiment uses a conductive metal belt 321, which has a width of about 2 mm and a thickness of about 0.2 mm, so that the conductive metal belt 321 can fully contact the grid line of the battery cell 400, solve the contact problem caused by the linear structure, avoid poor stability during the test process, and improve the detection accuracy.

[0050] As a specific embodiment of the present invention, Figure 3-Figure 7 As shown, in this embodiment, two connecting shafts 311 are arranged opposite to each other at the frame 310. Each connecting assembly 322 may include an adjusting block 3221, and the adjusting block 3221 is provided with a through hole 3222 and a slot 3223 connected to the through hole 3222, and the through hole 3222 cooperates with the connecting shaft 311, so that the adjusting block 3221 can move along the axial direction of the connecting shaft 311.

[0051] Specifically, two connecting shafts 311 are arranged at the frame 310 of the present embodiment, and the two connecting shafts 311 are arranged in parallel. Each connecting assembly 322 may include an adjusting block 3221, and a through hole 3222 is arranged on the adjusting block 3221, and the connecting shaft 311 is passed through the through hole 3222. Specifically, the two connecting shafts 311 are arranged on both sides of the frame 310, and the two connecting shafts 311 are arranged in parallel. The adjusting blocks 3221 at both ends of the conductive metal belt 321 of each test assembly 320 are respectively arranged at one of the connecting shafts 311, so that the conductive metal belt 321 is tightened, and the distance between two adjacent test assemblies 320 is adjusted by sliding the adjusting block 3221 at the connecting shaft 311 along the axial direction of the connecting shaft 311, so as to be suitable for testing the battery cells 400 with different gate lines.

[0052] As a specific embodiment of the present invention, Figure 6-Figure 7 As shown, each adjusting block 3221 of this embodiment is provided with a threaded hole 3224 at the slot 3223 , and after the adjusting block 3221 reaches a preset position, the slot 3223 is locked by a fastener to fix the adjusting block 3221 .

[0053] Specifically, in this embodiment, a slot 3223 is provided at the through hole 3222 to facilitate the setting of the adjustment block 3221 at the connecting shaft 311, and a threaded hole 3224 is provided at the slot 3223. After the adjustment block 3221 is adjusted to a predetermined position, the slot 3223 can be locked by passing a fastener through the threaded hole 3224, thereby locking the adjustment block 3221 and fixing it at a position of the connecting shaft 311.

[0054] As a specific embodiment of the utility model, each connecting component 322 of this embodiment can also include a hook 3225, a tension spring 3226 and an eight-shaped buckle 3227 connected in sequence, the hook 3225 is connected to the adjustment block 3221, and the eight-shaped buckle 3227 is connected to the conductive metal belt 321.

[0055] Specifically, the connecting component 322 of this embodiment may include a hook 3225, a tension spring 3226 and an eight-shaped buckle 3227 connected in sequence, and is connected to the adjusting block 3221 through the hook 3225, and the eight-shaped buckle 3227 is connected to the conductive metal belt 321, so that the two ends of the conductive metal belt 321 have a certain elastic force when connected to the connecting shaft 311, and thus, while tensioning the conductive metal belt 321, it can avoid hidden cracks or damage to the battery cell 400 when testing the battery cell 400.

[0056] As a specific embodiment of the present invention, the number of the test components 320 in this embodiment is multiple, and the multiple test components 320 are arranged in parallel and at intervals.

[0057] As a specific embodiment of the present invention, Figure 8 As shown, the measuring device 200 of this embodiment may further include an auxiliary positioning fixture 323, which may be used to adjust the spacing between the plurality of test assemblies 320. The auxiliary positioning fixture 323 may include at least one positioning protrusion 3231 of a preset size.

[0058] Specifically, the present embodiment uses the auxiliary positioning fixture 323 to adjust the distance between different test assemblies 320. When the test assemblies 320 test different battery cells 400 and require different spacings, different auxiliary positioning fixtures 323 can be replaced to change the distance between different test assemblies 320.

[0059] Specifically, the auxiliary positioning fixture 323 of this embodiment may include at least one positioning protrusion 3231. Generally, the auxiliary positioning fixture 323 may include multiple positioning protrusions 3231. For example Figure 8The number of positioning protrusions 3231 of the auxiliary positioning fixture 323 shown in the figure is three. The sizes of the multiple positioning protrusions 3231 are kept consistent, so that the distances between the test components 320 adjusted by the auxiliary positioning fixture 323 can be the same. Preferably, the number of positioning protrusions 3231 of the auxiliary positioning fixture 323 is the same as the number of test components 320 or one less, so that when the gap between the test components 320 is adjusted by the auxiliary positioning fixture 323, it is only necessary to place the auxiliary positioning fixture 323 between the test components 320 for one adjustment.

[0060] As a specific embodiment of the present invention, Figure 9-12 As shown, the base 200 of this embodiment may include two carriers 210 and at least one support member 220 arranged opposite to each other. At least one slot 211 is arranged at each carrier 210. Each support member 220 is parallel to the conductive metal strip 321, and both ends of each support member 220 are arranged at one of the slots 211 of the two carriers 210.

[0061] Specifically, two carriers 210 are disposed at the base 200 of the present embodiment, and a slot 211 is disposed at each carrier 210 . Both ends of the support member 220 are respectively disposed in the slots 211 of the two carriers 210 , thereby ensuring support and fixation of the support member 220 .

[0062] Specifically, the support member 220 of this embodiment may be a copper busbar.

[0063] Specifically, the number of the support members 220 in this embodiment is the same as the number of the conductive metal strips 321 , and when the measuring device 300 measures the battery cell 400 , each support member 220 is disposed corresponding to one of the conductive metal strips 321 .

[0064] Specifically, this embodiment utilizes the support member 220 to support the battery cell 400, and when the measuring device 300 measures the battery cell 400, the conductive metal belt 321 presses the battery cell 400. At this time, the conductive metal belt 321 and the support member 220 are arranged correspondingly, which not only ensures good contact, but also avoids the battery cell 400 from being cracked or damaged when the conductive metal belt 321 presses the battery cell 400.

[0065] As a specific embodiment of the utility model, the number of the card slots 211 at each carrier 210 of this embodiment is multiple and arranged at intervals, and the number of the card slots 211 at the two carriers 210 is equal and arranged correspondingly. The number of the support members 220 is multiple, and the number of the support members 220 is the same as the number of the card slots 211 at one of the carriers 210. The multiple support members 220 are arranged in parallel and at intervals.

[0066] In this embodiment, the top of each support member 220 contacts the battery cell 400 to ensure good contact with the battery cell 400, so that the EL image obtained later is clearer.

[0067] As a specific embodiment of the present invention, the distance between the multiple slots 211 of the carrier 210 of this embodiment matches the size of the positioning protrusion 3231 .

[0068] In this embodiment, the distance between the slots 211 matches the position of the positioning protrusions 3231 , which can ensure that the multiple support members 220 and the multiple test components 320 can correspond one to one.

[0069] Specifically, if the electrical performance of different battery cells 400 is to be tested, when different auxiliary positioning fixtures 323 are replaced to adjust the distance between the test components 320, the carrier 210 also needs to be replaced with a carrier 210 whose distance between the slots 211 matches the spacing between the test components 320.

[0070] As other embodiments of the utility model, as not shown in the figure, in this embodiment, grooves or holes can be set at both ends of the support member 220, and the carrier 210 can also be replaced with an axis, so that the groove or hole can be connected with the axis, thereby adjusting the distance between multiple support members 220 by utilizing an auxiliary positioning fixture 323 that is the same as the distance between the test components 320.

[0071] As a specific embodiment of the present invention, Fig.13 As shown, each support member 220 of the present embodiment has a protruding portion 221 , and the upper surfaces 222 of the protruding portions 221 of the plurality of support members 220 together form a supporting surface 223 for supporting the battery cell 400 .

[0072] Specifically, the support member 220 in this embodiment forms a protrusion 221, so that when the test component 320 tests the battery cell 400, in order to ensure better contact between the conductive metal belt 321 and the battery cell 400, the height of the connecting components 322 on both sides can be slightly lower than the height of the upper surface 222 of the protrusion 221 without touching the support member 220.

[0073] As a specific embodiment of the present invention, the upper surface 222 of each protrusion 221 of this embodiment is an arc-shaped structure, so that the supporting surface 223 is an arc-shaped surface.

[0074] Specifically, the upper surface 222 of the raised portion 221 of this embodiment forms an arc structure so that the support surface 223 is an arc surface. Specifically, the arc structure is high in the middle and low at both ends, and has an arc transition. In this way, when the battery cell 400 is placed on the support surface 223, the middle of the battery cell 400 is supported slightly higher than the two sides, thereby making the conductive metal strip 321 better in contact with the battery cell 400.

[0075] As a specific embodiment of the present invention, Figure 9-12 As shown, the base 200 of this embodiment may further include a base 230 and two pressing plates 240. The base 230 is used to accommodate the carrier 210 and the support member 220. The two pressing plates 240 are connected to the base 230 to fix the carrier 210 and the support member 220 at the base 230.

[0076] Specifically, the base 200 of the present embodiment may further include a base 230 and two pressing plates 240 , and the carrier 210 and the support member 220 are fixed by the base 230 and the two pressing plates 240 , thereby ensuring the stability of the support member 220 .

[0077] As a specific embodiment of the present invention, each support member 220 of this embodiment is provided with a first inclined surface 224 near both ends. Each pressing plate 240 is provided with a second inclined surface 241, which cooperates with the first inclined surface 224 to prevent the support member 220 from moving.

[0078] Specifically, when the support member 220 in this embodiment is set at the carrier 210, it is directly clamped in the slot 211. In order to prevent the support member 220 from moving along the two ends, a second inclined surface 241 is set by the pressure plate 240, and the support member 220 is set in the form of a first inclined surface 224 to fix the support member 220 and prevent the support member 220 from moving.

[0079] As a specific embodiment of the present invention, Figure 9-12 As shown, the base 200 of this embodiment may further include a needle locking plate 250, which is located under the base 230 and is used to support the base 230. Two parallel guide grooves 251 are provided on the needle locking plate 250, and the extension direction of the guide grooves 251 is perpendicular to the plane where the support member 220 is located. The base 230 can slide along the guide grooves 251 and be fastened using fasteners after reaching a preset position.

[0080] Specifically, the needle plate 250 of this embodiment supports the base 230, the carrier 210 and the support member 220, and two parallel guide grooves 251 are set on the needle plate 250, so that the base 230 can be moved to a suitable position under the guidance of the guide grooves 251, and the base 230 can be locked after reaching the destination, and the fastener is located in the guide grooves 251.

[0081] The specific process of using the testing device 100 of this embodiment to detect the electrical performance of the battery cell 400 is as follows:

[0082] When it is necessary to perform an electrical performance test on a specific battery cell 400 , a measuring device 300 having a predetermined number of test components 320 may be selected, and the distance between the test components 320 may be adjusted to a suitable spacing using an auxiliary positioning fixture 323 .

[0083] The carrier 210 at the bottom base 200 also selects a carrier 210 with a suitable distance slot 211, and all the support members 220 are locked in the slot 211, and then the carrier 210 is set in the base 230 and pressed by the pressing plate 240. The base 230 is placed on the needle plate 250, and the position of the base 230 is adjusted so that the support member 220 corresponds to the test component 320.

[0084] When testing the battery cell 400 , the battery cell 400 is placed on the support 220 , and the measuring device 300 is moved downward until the conductive metal belt 321 is in full contact with the top of the battery cell 400 . Then, the moving measuring device 300 is stopped to test the electrical performance of the battery cell 400 .

[0085] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A solar cell testing device, used to test the electrical performance of a solar cell, characterized in that: include: A base, used for supporting the battery cell; A measuring device is located above the base, the measuring device includes a frame and at least one test component arranged on the frame, each of the test components includes a conductive metal belt capable of contacting the surface to be tested of the battery cell and a connecting component connecting both ends of the conductive metal belt to the frame, the connecting component is elastic, and the position of the connecting component on the frame is adjustable.

2. The solar cell testing device according to claim 1, characterized in that: The frame is provided with two connecting shafts arranged opposite to each other; Each of the connecting components comprises an adjusting block, wherein the adjusting block is provided with a through hole and a slot connected to the through hole, and the through hole cooperates with the connecting shaft so that the adjusting block can move axially along the connecting shaft.

3. The solar cell testing device according to claim 2, characterized in that: Each of the adjusting blocks is provided with a threaded hole at the slot, so that after the adjusting block reaches a preset position, the slot is locked by a fastener to fix the adjusting block.

4. The solar cell testing device according to claim 2, characterized in that: Each of the connecting components further comprises a hook, a tension spring and an eight-shaped buckle which are connected in sequence, the hook is connected to the adjusting block, and the eight-shaped buckle is connected to the conductive metal belt.

5. The solar cell testing device according to any one of claims 1 to 4, characterized in that: The measuring device also includes an auxiliary positioning fixture. There are multiple test components, and the multiple test components are arranged in parallel and at intervals. The auxiliary positioning fixture is used to adjust the spacing between the multiple test components.

6. The solar cell testing device according to claim 5, characterized in that: The base comprises: Two carriers arranged opposite to each other, each of the carriers being provided with at least one card slot; and At least one supporting member, each of the supporting members is parallel to the conductive metal strip, and two ends of each of the supporting members are respectively disposed at one of the slots of the two carriers.

7. The solar cell testing device according to claim 6, characterized in that: The number of the support members is the same as the number of the conductive metal strips, and when the measuring device measures the battery cell, each of the support members is arranged corresponding to one of the conductive metal strips.

8. The solar cell testing device according to claim 6, characterized in that: The number of the card slots at each carrier is multiple and arranged at intervals, and the number of the card slots at two carriers is equal and arranged correspondingly; The number of the supporting members is multiple, and the number of the supporting members is the same as the number of the card slots at one of the carriers, and the multiple supporting members are arranged in parallel and at intervals; The auxiliary positioning fixture includes at least one positioning protrusion of a preset size; the distance between the plurality of slots of the carrier matches the size of the positioning protrusion.

9. The solar cell testing device according to claim 6, characterized in that: Each of the support members has a protruding portion, and upper surfaces of the protruding portions of the plurality of support members jointly form a supporting surface for supporting the battery cell; Furthermore, the upper surface of each of the protruding portions is an arc-shaped structure, so that the supporting surface is an arc-shaped surface.

10. The solar cell testing device according to claim 6, characterized in that: The base also includes: A base for accommodating the carrier and the support member; and Two pressing plates are connected to the base to fix the carrier and the support member at the base.

11. The solar cell testing device according to claim 10, characterized in that: Each of the supporting members is provided with a first inclined surface near both ends; A second inclined surface is provided at each of the pressing plates, and the second inclined surface cooperates with the first inclined surface to prevent the support member from moving.

12. The solar cell testing device according to claim 10, characterized in that: The base also includes a needle clamping plate, which is located under the base and is used to support the base. Two parallel guide grooves are provided on the needle clamping plate. The extension direction of the guide grooves is perpendicular to the plane where the support member is located. The base can slide along the guide grooves and be fastened using fasteners after reaching a preset position.

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