Test tool

Abstract

The utility model relates to a test tool. The test tool comprises a tool seat, a test module, a connecting piece and a clamping assembly, the tool seat is provided with a mounting cavity and two communicating ports, and the two communicating ports are arranged at an interval; the test module is connected with the tool seat and is used for detecting current-voltage characteristics of the photovoltaic module; one end of the connecting piece is connected with the test module, and the other end is located between the two communication ports; the clamping assembly comprises a driving part and a clamping jaw, one end of the driving part extends into the mounting cavity, the other end of the driving part extends out of the mounting cavity, the clamping jaw comprises two clamping parts, each clamping part comprises a clamping part and an adjusting part, the adjusting parts are obliquely arranged and rotationally connected with the driving part, and the two clamping parts are used for clamping a connecting terminal of the photovoltaic assembly. According to the invention, through the arrangement of the clamping assembly, the connection terminal of the photovoltaic module can be clamped and fixed, the insertion direction is restrained, the connection terminal is not easy to loosen if the connection terminal is reversely pulled due to shaking and too tight cable binding, and the test abnormity is avoided.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a testing fixture. Background Technology

[0002] Currently, in the photovoltaic module manufacturing process, the traditional IV testing stage uses terminal plug-in connections. This method has high requirements for the service life of the plug-in connections, but poor testing stability. Therefore, in recent years, with the development of automation, in order to match the operational needs of automated testing equipment, various photovoltaic module terminals have begun to use external testing fixtures for auxiliary testing to replace the traditional terminal plug-in connections and simplify the mechanical operation.

[0003] During testing, the device probe only needs to be pressed vertically down onto the metal plate of the external test fixture to establish conductivity with the corresponding connecting wire and perform the test. However, the existing fixture connection structure uses a slot with a hole size close to the terminal to insert the terminal and form a connection. It only has an external conductivity function and does not have a constraint on the insertion direction after the terminal is inserted. If there is vibration or reverse pulling caused by overly tight cable bundling, it is very easy to loosen and cause test abnormalities. Utility Model Content

[0004] Based on this, a test fixture is provided, which is equipped with a clamping component to further fix the connection terminals of the photovoltaic module and has a constraint on the insertion direction. If there is shaking or reverse pulling caused by overly tight cable bundling, it will not easily loosen, thus avoiding test abnormalities.

[0005] To this end, this application provides a testing fixture for testing the current-voltage characteristics of a photovoltaic module, comprising: a fixture base having a mounting cavity and two communication ports communicating with the mounting cavity; a testing module connected to the fixture base and used to detect the current-voltage characteristics of the photovoltaic module; a connector having one end connected to the testing module and the other end located between the two communication ports; and a clamping assembly including a driving member and a gripper, one end of the driving member extending into the mounting cavity and the other end extending out of the mounting cavity, the gripper including two clamping parts located in the two communication ports respectively, the clamping parts including a clamping portion and an adjusting portion connected to each other, the adjusting portion being inclined, the end of the adjusting portion away from the clamping portion extending into the mounting cavity and rotatably connected to the driving member, and the two clamping portions of the gripper being used to clamp the connection terminals of the photovoltaic module.

[0006] In one embodiment, a clamping plate is provided at the end of the clamping portion away from the adjusting portion, and the clamping plate is arranged in an arc shape to adapt to the connection terminal of the photovoltaic module.

[0007] In one embodiment, the tooling base is further provided with an elastic cavity, the end of the driving member away from the mounting cavity passes through the elastic cavity, the driving member is further provided with an abutment plate, the clamping assembly further includes an elastic member, the end of the elastic member away from the clamping assembly abuts against the abutment plate, and the end of the elastic member facing the clamping assembly abuts against the inner wall of the elastic cavity.

[0008] In one embodiment, two elastic elements are provided, with the two elastic elements located on opposite sides of the drive element.

[0009] In one embodiment, the tooling base is further provided with a mounting hole, and the other end of the connector is provided with a connecting portion, which is located in the mounting hole and is flush with the end face of the second mounting portion.

[0010] In one embodiment, an auxiliary socket is provided at the end of the tooling base. The auxiliary socket has an inner cavity that is used to cover the gripper. The two clamping members of the gripper can be opened and closed in the inner cavity of the auxiliary socket.

[0011] In one embodiment, the auxiliary socket includes a first plug and a second plug connected to each other, the inner cavity of the first plug is larger than the inner cavity of the second plug, the end of the first plug away from the second plug is connected to the tooling base, the gripper is located in the inner cavity of the first plug, and the inner cavity of the second plug is adapted to the connection terminal of the photovoltaic module.

[0012] In one embodiment, the second insertion part is further provided with an exhaust observation port, which is in communication with the inner cavity of the second insertion part.

[0013] In one embodiment, the tooling base is provided with a weight-reducing groove and / or a weight-reducing hole.

[0014] In one embodiment, the tooling base is provided with a mounting groove on the side opposite to the test module. The tooling base is slidably connected to the mounting component through the mounting groove. The tooling base can slide along the length direction of the mounting component and is fixed by fasteners.

[0015] According to the embodiments of this application, a test fixture is provided for testing the current-voltage characteristics of a photovoltaic module. The test fixture includes a fixture base, a test module, a connector, and a clamping assembly. The fixture base is provided with a mounting cavity and a communication port communicating with the mounting cavity. There are two communication ports, which are spaced apart. The test module is connected to the fixture base and is used to detect the current-voltage characteristics of the photovoltaic module. One end of the connector is connected to the test module, and the other end is located between the two communication ports. The clamping assembly includes a drive member and a gripper. One end of the drive member extends into the mounting cavity and the other end extends out of the mounting cavity. The gripper includes two clamping parts located in the two communication ports respectively. The clamping parts include clamping portions and adjusting portions connected to each other. The adjusting portions are inclined. The end of the adjusting portion away from the clamping portion extends into the mounting cavity and is rotatably connected to the drive member. The two clamping portions of the gripper are used to clamp the connection terminals of the photovoltaic module. This application, by setting up a clamping component, can further clamp and fix the connection terminals of the photovoltaic module, and constrain the insertion direction of the connection terminals of the photovoltaic module. If there is shaking or reverse pulling caused by excessively tight cable bundling, it can reduce or avoid loosening and thus not affect normal testing. Attached Figure Description

[0016] Figure 1 This diagram shows the structural schematic of the connection terminals between the test fixture and the photovoltaic module of this application;

[0017] Figure 2 A partial schematic diagram of the connection terminals between the test fixture and the photovoltaic module of this application is shown;

[0018] Figure 3 A partial schematic diagram of the test fixture of this application is shown;

[0019] Figure 4 A cross-sectional view of the test fixture of this application is shown;

[0020] Figure 5 This diagram illustrates the structure of a clamping assembly according to an embodiment of this application.

[0021] Figure 6 This illustration shows a structural schematic diagram of an auxiliary socket provided in an embodiment of this application;

[0022] Figure 7 This diagram shows the assembly process of the test fixture and the connection terminals of the photovoltaic module.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Tooling base; 11. First mounting part; 111. Mounting cavity; 112. Connecting port; 113. Elastic cavity; 115. Weight reduction groove; 12. Second mounting part; 121. Mounting groove; 2. Test module; 3. Connector; 31. Connecting part; 4. Clamping assembly; 41. Driving component; 411. Abutment plate; 42. Clamping component; 421. Clamping part; 422. Adjustment part; 423. Clamping plate; 43. Elastic component; 5. Photovoltaic module connection terminal; 6. Auxiliary socket; 61. First insertion part; 62. Second insertion part; 621. Exhaust observation port; 7. Mounting component. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0027] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0028] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] During testing, the device probe only needs to be pressed vertically down onto the metal plate of the external test fixture to establish conductivity with the corresponding connecting wire and perform the test. However, the existing fixture connection structure uses a slot with a hole size close to the terminal to insert the terminal and form a connection. It only has an external conductivity function and does not have a constraint on the insertion direction after the terminal is inserted. If there is vibration or reverse pulling caused by overly tight cable bundling, it is very easy to loosen and cause test abnormalities.

[0030] To solve the above problems, refer to Figures 1-5 as well as Figure 7 , Figure 1 This diagram shows the structural schematic of the connection terminals between the test fixture and the photovoltaic module. Figure 2 A partial schematic diagram of the connection terminals between the test fixture of this application and the photovoltaic module is shown. Figure 3 A partial schematic diagram of the test fixture of this application is shown. Figure 4 A cross-sectional view of the test fixture of this application is shown. Figure 5 This diagram illustrates the structure of a clamping assembly according to an embodiment of this application. Figure 7 This diagram shows the assembly process of the test fixture and the connection terminals of the photovoltaic module.

[0031] This application provides a testing fixture for testing the current-voltage characteristics of photovoltaic modules. The testing fixture includes a fixture base 1, a testing module 2, a connector 3, and a clamping assembly 4. The fixture base 1 is provided with a mounting cavity 111 and two connecting ports 112 communicating with the mounting cavity 111. The connecting ports 112 are provided and spaced apart. The testing module 2 is connected to the fixture base 1 and is used to detect the current-voltage characteristics of the photovoltaic module. One end of the connector 3 is connected to the testing module 2, and the other end is located between the two connecting ports 112. The clamping assembly 4... Component 4 includes a drive component 41 and a gripper. One end of the drive component 41 extends into the mounting cavity 111 and the other end extends out of the mounting cavity 111. The gripper includes two clamping components 42 located in two connecting ports 112 respectively. The clamping component 42 includes a clamping part 421 and an adjusting part 422 connected to each other. The adjusting part 422 is inclined. The end of the adjusting part 422 away from the clamping part 421 extends into the mounting cavity 111 and is rotatably connected to the drive component 41. The two clamping parts 421 of the gripper are used to clamp the connection terminals 5 of the photovoltaic module.

[0032] It should be understood that the test fixture includes a fixture base 1, which may be made of plastic. The fixture base 1 includes a first mounting part 11 and a second mounting part 12 connected to each other. The first mounting part 11 is provided with a mounting cavity 111 and a connecting port 112 communicating with the mounting cavity 111. The connecting port 112 is located on the side wall of the first mounting part 11. There are two connecting ports 112, which are arranged at intervals along the length direction of the first mounting part 11.

[0033] The testing fixture includes a test module 2 and a connector 3. The test module 2 is mounted on the upper end of the second mounting part 12 and is used to test the current-voltage characteristics of the photovoltaic module. The connector 3 is made of conductive material. One end of the connector 3 is located at the first mounting part 11 and extends between the two connecting ports 112 to facilitate electrical connection with the connection terminals 5 of the photovoltaic module. The other end of the connector 3 is located at the second mounting part 12 and is electrically connected to the test module 2. During operation, the connector 3 electrically connects the connection terminals 5 of the photovoltaic module to the test module 2, enabling the test module 2 to test the photovoltaic module.

[0034] The test fixture also includes a clamping assembly 4, which includes a drive member 41 and a gripper. The drive member 41 is elongated and can be cylindrical or cuboid. This application does not impose any restrictions. One end of the drive member 41 extends into the mounting cavity 111 and the other end extends out of the mounting cavity 111. The operator can control the length of the drive member 41 extending into the mounting cavity 111.

[0035] The gripper includes two clamping members 42, each comprising a clamping portion 421 and an adjusting portion 422. The adjusting portion 422 is inclined and one end is connected to the clamping portion 421. The interior angle between the clamping portion 421 and the adjusting portion 422 is obtuse. The interior angles of the two clamping members 42 are opposite each other to form the gripper. The two clamping members 42 are located in two connecting ports 112. The end of the adjusting portion 422 away from the clamping portion 421 extends into the mounting cavity 111 and is rotatably connected to the driving member 41. The rotation axis connecting the adjusting portion 422 and the driving member 41 is located in a vertical plane. The operator can adjust the driving member 41 to control the opening angle of the two clamping portions 421 of the gripper, so that the two clamping portions 421 of the gripper can clamp the connection terminals 5 of the photovoltaic module.

[0036] During operation, the drive member 41 is pushed, causing it to move towards the gripper. The two gripping parts 421 of the drive gripper extend out of the communication port 112, and the adjusting part 422 extends into the communication port 112. At the same time, the adjusting part 422 and the drive member 41 rotate, increasing the opening angle of the two gripping parts 421 of the gripper. This facilitates the placement of the photovoltaic module's connection terminal 5 between the two gripping parts 421. After the photovoltaic module's connection terminal 5 is placed between the two gripping parts 421, the drive member 41 moves away from the gripper, causing the adjusting part 422 to extend from the communication port 112 into the mounting cavity 111. The gripping parts 421 are located in the communication port 112, reducing the opening angle of the two gripping parts 421, thereby clamping and fixing the photovoltaic module's connection terminal 5.

[0037] This application, by setting up a clamping component 4, can further clamp and fix the connection terminal 5 of the photovoltaic module, and constrain the insertion direction of the connection terminal 5 of the photovoltaic module. If there is shaking or reverse pulling caused by excessively tight cable bundling, it can reduce or avoid loosening and thus not affect normal testing.

[0038] Reference Figure 4 and Figure 5 In some optional embodiments, a clamping plate 423 is provided at the end of the clamping part 421 away from the adjusting part 422. The clamping plate 423 is arc-shaped to fit the connection terminal 5 of the photovoltaic module. The clamping part 421 and the clamping plate 423 are made of the same material and are integrally formed. The connection terminal 5 of the photovoltaic module is cylindrical, and the arc-shaped clamping plate 423 increases the contact area between the clamping plate 423 and the connection terminal 5 of the photovoltaic module, thereby increasing the contact area between the clamping member 42 and the connection terminal 5 of the photovoltaic module and improving the stability of clamping the connection terminal 5 of the photovoltaic module.

[0039] In some optional embodiments, the tooling base 1 is further provided with an elastic cavity 113, and the end of the drive member 41 away from the mounting cavity 111 passes through the elastic cavity 113. The drive member 41 is also provided with an abutment plate 411. The clamping assembly 4 also includes an elastic member 43. The end of the elastic member 43 away from the clamping assembly 4 abuts against the abutment plate 411, and the end of the elastic member 43 facing the clamping assembly 4 abuts against the inner wall of the elastic cavity 113.

[0040] The elastic cavity 113 and the mounting cavity 111 are connected by a connecting channel. To reduce or avoid skewing of the driving component 41 during movement, the connecting channel is adapted to the driving component 41. One end of the driving component 41 extends into the mounting cavity 111, and the other end extends into and out of the elastic cavity 113, thus facilitating the operator to push the driving component 41. A stop plate 411 is also provided on the periphery of the driving component 41. The material of the stop plate 411 is the same as that of the driving component 41. The stop plate 411 and the driving component 41 are integrally formed. The stop plate 411 is located in the elastic cavity 113. The clamping assembly 4 also includes an elastic component 43. The elastic component 43 can be a spring or other elastic material. The end of the elastic component 43 facing away from the clamping assembly 4 abuts against the stop plate 411, and the end of the elastic component 43 facing the clamping assembly 4 abuts against the inner wall of the elastic cavity 113.

[0041] During operation, when the driving component 41 is pushed to move towards the clamping assembly 4, the driving component 41 can be lifted by the ejector pin, and the elastic component 43 is in a compressed state. When the force applied to the driving component 41 is removed, that is, after the ejector pin is removed, the elastic component 43 returns to its original position, thereby pushing the driving component 41 away from the clamping assembly 4. At the same time, the gripper can be controlled to be in a clamping state, further improving the clamping effect of the gripper on the connection terminal 5 of the photovoltaic module.

[0042] In some alternative embodiments, the elastic element 43 is a spring, and the elastic element 43 may be provided once and fitted with the drive element 41.

[0043] In some optional embodiments, two elastic elements 43 are provided, with the two elastic elements 43 located on both sides of the driving element 41 respectively. Two abutment plates 411 are also provided and located on both sides of the two driving elements 41. The provision of two elastic elements 43 can further improve the elastic effect and improve the clamping effect of the grippers on the connection terminals 5 of the photovoltaic module.

[0044] Reference Figure 3 In some optional embodiments, the fixture base 1 is further provided with a mounting hole, and the other end of the connector 3 is provided with a connecting portion 31, which is located in the mounting hole and flush with the end face of the fixture base 1. That is, a mounting hole is provided on the side of the first mounting portion 11, which is located between the two connecting ports 112. The connecting portion 31 at the other end of the connector 3 is adapted to the mounting hole and is located in the mounting hole. When the connecting terminal 5 of the photovoltaic module is inserted between the two clamping members 42 of the gripper, the connecting terminal 5 of the photovoltaic module abuts against the connecting portion 31 of the connector 3, thereby making the connecting terminal 5 of the photovoltaic module and the connector 3 electrically connected. At the same time, the connecting portion 31 is flush with the end face of the first mounting portion 11, which improves the conductivity between the connecting terminal 5 of the photovoltaic module and the connector 3.

[0045] Reference Figure 1 and Figure 6 , Figure 6 This diagram illustrates the structure of an auxiliary socket according to an embodiment of this application. In some optional embodiments, an auxiliary socket 6 is further provided at the end of the tooling base 1. The auxiliary socket 6 has a through-cavity, which is used to cover the gripper. The two clamping members 42 of the gripper can be opened and closed within the cavity of the auxiliary socket 6. The auxiliary socket 6 is detachably connected to the first mounting part 11 of the tooling base 1. The connection method can be bolted, riveted, plugged in, etc., and this application does not impose any limitations. The cavity of the auxiliary socket 6 is aligned with the communication port 112, so that the cavity of the auxiliary socket 6 can be used to cover the gripper. However, the cavity of the auxiliary socket 6 is larger than the opening angle of the gripper, allowing the gripper to be opened and closed within the auxiliary socket 6. During installation, the photovoltaic module's connection terminal 5 first enters the inner cavity of the auxiliary socket 6, and then enters between the two clamping parts 42 of the gripper. The auxiliary socket 6 can position the photovoltaic module's connection terminal 5 during insertion, improving the smoothness of the insertion between the two clamping parts 42. At the same time, the auxiliary socket 6 can also protect the gripper, preventing external damage to the gripper and improving the service life of this application.

[0046] In some optional embodiments, the auxiliary socket 6 includes a first plug portion 61 and a second plug portion 62 connected to each other. The inner cavity of the first plug portion 61 is larger than the inner cavity of the second plug portion 62. The end of the first plug portion 61 away from the second plug portion 62 is connected to the fixture base 1. The gripper is located in the inner cavity of the first plug portion 61, and the inner cavity of the second plug portion 62 is adapted to the connection terminal 5 of the photovoltaic module. That is, the first plug portion 61 is connected to the first mounting portion 11 of the fixture base 1, and the gripper is located in the inner cavity of the first plug portion 61, i.e., the first plug portion 61 protects the gripper. The inner cavity of the second plug portion 62 is smaller than the inner cavity of the first plug portion 61 and is adapted to the connection terminal 5 of the photovoltaic module, thereby improving the accuracy between the two clamping members 42 of the gripper when the connection terminal 5 of the photovoltaic module is inserted into the connection terminal 5 of the photovoltaic module.

[0047] In some optional embodiments, the second insertion portion 62 is further provided with an exhaust observation port 621, which communicates with the inner cavity of the second insertion portion 62. The exhaust observation port 621 penetrates the side wall of the second insertion portion 62. The exhaust observation port 621 facilitates the venting of air when the connection terminal 5 of the photovoltaic module is inserted into the auxiliary socket 6, improving the smoothness of the insertion of the connection terminal 5 of the photovoltaic module into the auxiliary socket 6. The operator can also observe the insertion status of the connection terminal 5 of the photovoltaic module through the exhaust observation port 621. For further observation, the exhaust observation port 621 is located above the second insertion portion 62.

[0048] Reference Figures 1-3 In some optional embodiments, the tooling base 1 is provided with weight-reducing grooves 115 and / or weight-reducing holes. The weight-reducing grooves 115 and / or weight-reducing holes may be located at the first mounting portion 11 and / or the second mounting portion 12; this application is not limited to this. The provision of weight-reducing grooves 115 and / or weight-reducing holes can reduce the weight and material of the tooling base 1, facilitating handling and saving manufacturing costs. In one example, two weight-reducing grooves 115 are provided at the first mounting portion 11, with the openings of the weight-reducing grooves 115 facing upwards.

[0049] Reference Figure 1 and Figure 2In some optional embodiments, the fixture base 1 is provided with a mounting groove 121 on the side opposite to the test module 2. The fixture base 1 is slidably connected to the mounting part 7 through the mounting groove 121. The fixture base 1 can slide along the length direction of the mounting part 7 and is fixed by fasteners. The mounting part 7 is elongated and located in the mounting groove 121. The mounting part 7 is slidably connected to the second mounting part 12. The fixture base 1 can slide along the length direction of the mounting part 7. During installation, the operator can use bolts to connect the end of the mounting part 7 extending out of the mounting groove 121 to the external base to fix the mounting part 7. Then, the fixture base 1 is slid. When the fixture base 1 is in the appropriate position, it is fixed by fasteners, which can be bolts. This prevents the fixture base 1 from tilting when the photovoltaic module connection terminal 5 is inserted, thereby improving the smoothness and accuracy of the insertion of the photovoltaic module connection terminal 5 into the two clamping parts 42 of the gripper.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A testing fixture for testing the current-voltage characteristics of photovoltaic modules, characterized in that, include: The tooling base (1) is provided with a mounting cavity (111) and a communication port (112) communicating with the mounting cavity (111). There are two communication ports (112) and they are spaced apart. Test module (2), connected to the fixture (1) and used to detect the current-voltage characteristics of the photovoltaic module; The connector (3) has one end connected to the test module (2) and the other end located between the two communication ports (112); and The clamping assembly (4) includes a drive member (41) and a gripper. One end of the drive member (41) extends into the mounting cavity (111) and the other end extends out of the mounting cavity (111). The gripper includes two clamping parts (42) located in the two communication ports (112). The clamping part (42) includes a clamping portion (421) and an adjusting portion (422) connected to each other. The adjusting portion (422) is inclined. One end of the adjusting portion (422) away from the clamping portion (421) extends into the mounting cavity (111) and is rotatably connected to the drive member (41). The two clamping portions (421) of the gripper are used to clamp the connection terminals (5) of the photovoltaic module.

2. The test fixture according to claim 1, characterized in that, A clamping plate (423) is provided at one end of the clamping part (421) away from the adjusting part (422), and the clamping plate (423) is arranged in an arc shape to fit the connection terminal (5) of the photovoltaic module.

3. The testing fixture according to claim 1, characterized in that, The tooling base (1) is also provided with an elastic cavity (113). The end of the driving member (41) away from the mounting cavity (111) passes through the elastic cavity (113). The driving member (41) is also provided with an abutment plate (411). The clamping assembly (4) also includes an elastic member (43). The end of the elastic member (43) away from the clamping assembly (4) abuts against the abutment plate (411). The end of the elastic member (43) facing the clamping assembly (4) abuts against the inner wall of the elastic cavity (113).

4. The testing fixture according to claim 3, characterized in that, Two elastic elements (43) are provided, and the two elastic elements (43) are respectively located on both sides of the driving element (41).

5. The testing fixture according to claim 1, characterized in that, The tooling base (1) is also provided with a mounting hole, and the other end of the connector (3) is provided with a connecting part (31), which is located in the mounting hole and is flush with the end face of the tooling base (1).

6. The test fixture according to claim 1, characterized in that, The end of the tooling base (1) is also provided with an auxiliary socket (6), the auxiliary socket (6) has an inner cavity, the inner cavity of the auxiliary socket (6) is used to cover the gripper, and the two gripping members (42) of the gripper can be opened and closed in the inner cavity of the auxiliary socket (6).

7. The test fixture according to claim 6, characterized in that, The auxiliary socket (6) includes a first plug (61) and a second plug (62) connected to each other. The inner cavity of the first plug (61) is larger than the inner cavity of the second plug (62). The end of the first plug (61) away from the second plug (62) is connected to the tooling base (1). The gripper is located in the inner cavity of the first plug (61). The inner cavity of the second plug (62) is adapted to the connection terminal (5) of the photovoltaic module.

8. The test fixture according to claim 7, characterized in that, The second insertion part (62) is also provided with an exhaust observation port (621), which is in communication with the inner cavity of the second insertion part (62).

9. The test fixture according to claim 1, characterized in that, The tooling base (1) is provided with a weight reduction groove (115) and / or a weight reduction hole.

10. The test fixture according to claim 1, characterized in that, The tooling base (1) is provided with an installation groove (121) on the side away from the test module (2). The tooling base (1) is slidably connected to the mounting part (7) through the installation groove (121). The tooling base (1) can slide along the length direction of the mounting part (7) and be fixed by fasteners.

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