Connecting structure for IV test tool and IV test system

Abstract

The utility model relates to a connection structure for an IV test tool and an IV test system, the connection structure is used for connecting a photovoltaic junction box and a test tool which are plugged along a first direction, a terminal head of the photovoltaic junction box is plugged into a terminal of the test tool along the first direction, the connection structure comprises a first clamping part, a second clamping part and a third clamping part, the first clamping part is arranged on the photovoltaic wire junction box; the second clamping part is arranged on the test tool and is configured to be capable of being clamped and matched with the first clamping part when the terminal head is inserted into the terminal; and the driving assembly is connected to the IV test tool and is used for driving the first clamping part and the second clamping part to be separated from clamping connection, and the IV test tool solves the problem that the connection between the terminal head and the tool is not stable.

Description

Technical Field

[0001] This disclosure relates to the field of photovoltaic module testing technology, and more specifically, to a connection structure for IV testing fixtures and an IV testing system. Background Technology

[0002] In the photovoltaic (PV) module manufacturing process, IV (current-voltage) testing is an essential step. PV modules must undergo IV testing before their power, current, and other electrical performance parameters can be obtained. In related technologies, when IV testing is required, a fixture is first fixed to the PV module to ensure correct alignment between the fixture and the module's electrodes. This guarantees accurate connection between the terminals and the electrodes and avoids unnecessary movement or damage to the PV module during terminal connection.

[0003] During power testing, the stability of the contact resistance after the terminal head is inserted into the fixture directly affects the power of the photovoltaic module and the positioning of the module's power value. Furthermore, during transmission, external factors such as production line vibration can cause the terminal head to loosen or fall off, resulting in no power output during testing, leading to "0" power or a black EL screen. Due to unstable contact resistance, it can also affect the actual power output performance, impact the module's manufacturing process capability, delay the production cycle, and affect the authenticity of the photovoltaic module's tested power output. Utility Model Content

[0004] The purpose of this disclosure is to provide a connection structure for IV test fixtures and an IV test system, which solves the problem of unstable connection between the terminal head and the fixture.

[0005] To achieve the above objectives, this disclosure provides a connection structure for an IV test fixture, used to connect a photovoltaic junction box inserted along a first direction to a test fixture, wherein the terminal head of the photovoltaic junction box is inserted into the terminal of the test fixture along the first direction. The connection structure includes: a first latching portion disposed in the photovoltaic junction box; a second latching portion disposed in the test fixture and configured to engage with the first latching portion when the terminal head is inserted into the terminal; and a driving assembly connected to the IV test fixture for driving the first latching portion to disengage from the second latching portion.

[0006] Optionally, the first latching portion includes a first hook extending away from the photovoltaic junction box along the first direction, and the second latching portion includes a second hook extending towards the first hook along the first direction. The second hook is elastic and has a guide slope at its end that cooperates with the first hook, so that the first hook can pass over the second hook and latch with the second hook. The driving component is configured to cause the second hook to deform away from the first hook along a second direction perpendicular to the first direction and disengage from the latching with the first hook.

[0007] Optionally, the IV test fixture includes a terminal housing for accommodating the terminal and having a first opening into which the first hook extends. The second hook is connected to the inner side wall of the terminal housing and positioned to the side of the terminal. The drive assembly includes an operating member that is reciprocally movable through the side wall of the terminal housing in a second direction and engages with the second hook to drive the second hook.

[0008] Optionally, the second hook includes a connecting section and a snap-fit ​​section. The connecting section is connected to the inner wall of the housing. The snap-fit ​​section extends in the same direction as the first hook and its end forms a hook head spaced apart from the inner side wall of the terminal housing. The driving assembly includes a connecting rod, which is fixedly connected to the snap-fit ​​section and extends inward to be fixedly connected to the inner end of the operating member, so that the inwardly moving operating member can drive the hook head of the second hook to disengage from the hook head of the first hook in the second direction.

[0009] Optionally, the drive assembly further includes an elastic reset element for driving the operating element to elastically reset outward.

[0010] Optionally, the elastic reset member is constructed as a tension spring, and the operating member is a rod-shaped member extending along the second direction. The rod-shaped member has an outer end and an inner end. The tension spring is sleeved on the rod-shaped member, with one end fixedly connected to the inner side wall of the terminal housing and the other end fixedly connected to the inner end.

[0011] Optionally, a guide rod is connected to the inner end, the guide rod extending along a first direction and slidingly engaging with the bottom wall of the terminal housing.

[0012] Optionally, the inner sidewall of the terminal housing has a guide member, which has a guide groove extending in a second direction for the operating member to slide through.

[0013] Optionally, there are two first latching portions and two second latching portions, which are symmetrically arranged on both sides about the terminal, and there are correspondingly two driving components, which are symmetrically arranged.

[0014] According to a second aspect of this disclosure, an IV testing system is provided, comprising: a production line for conveying photovoltaic modules having photovoltaic junction boxes; a testing mechanism for performing IV testing on the photovoltaic modules; and a testing fixture for fixing to the photovoltaic junction boxes, further comprising: a connection structure for the IV testing fixture as described above.

[0015] The above technical solution allows for IV testing of photovoltaic (PV) modules. First, the test fixture is installed on the PV module, aligning the terminals of the PV module's junction box with the terminals on the test fixture. By providing a first locking part on the test fixture and a second locking part on the PV junction box, the first locking part engages with the second locking part during terminal insertion, ensuring stable connection between the PV junction box and the test fixture. This guarantees the stability and reliability of the connection between the terminals on the PV junction box and the terminals on the test fixture, preventing the terminals from easily loosening due to repeated insertion and removal, and avoiding the problem of terminals easily detaching from the terminal heads due to vibrations from the production line. After the PV module test is completed, the first and second locking parts are disengaged by driving the module, allowing the test fixture to be removed from the PV junction box and the terminals to disconnect. Therefore, by setting up a connection structure, the reliability of the connection between the terminals of the photovoltaic junction box and the terminal heads on the photovoltaic junction box can be guaranteed, so as to ensure the test effect of IV test. In addition, the connection structure and drive components can realize convenient disassembly and assembly between the test fixture and the photovoltaic module, thereby improving the test efficiency.

[0016] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the connection between the photovoltaic junction box and the test fixture according to an embodiment of this disclosure;

[0019] Figure 2 This is a schematic diagram of the first snap-fit ​​portion of the connection structure for the IV test fixture provided according to an embodiment of the present disclosure;

[0020] Figure 3 This is a schematic diagram of the second snap-fit ​​portion of the connection structure for the IV test fixture provided according to an embodiment of the present disclosure;

[0021] Figure 4This is a schematic diagram showing the position of the snap-fit ​​state of the connection structure for the IV test fixture provided according to an embodiment of this disclosure;

[0022] Figure 5 This is a schematic diagram showing the disengaged and engaged state of the connection structure for the IV test fixture provided in the embodiments of this disclosure.

[0023] Explanation of reference numerals in the attached figures

[0024] 10-Photovoltaic junction box, 101-Terminal head, 20-Test fixture, 201-Terminal, 202-Terminal housing, 1-First snap-fit ​​part, 11-First hook, 2-Second snap-fit ​​part, 21-Second hook, 211-Connecting section, 222-Snap-fit ​​section, 223-Guide slope, 3-Drive assembly, 31-Ring-shaped member, 311-Inner end, 312-Outer end, 32-Connecting rod, 33-Guide rod, 34-Elastic reset member, 4-Guide member, 41-Guide groove, L1-First direction, L2-Second direction. Detailed Implementation

[0025] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0026] In this disclosure, unless otherwise stated, the directional terms "inner" and "outer" refer to "inner" and "outer" relative to the contour of the corresponding component itself. Furthermore, the use of terms such as "first" and "second" is for distinguishing different components and does not indicate sequence or importance. "First direction" and "second direction" are respectively attached... Figure 1 The "L1" and "L2" directions are used in the following description. Furthermore, in the following description, when referring to the accompanying drawings, the same reference numerals in different drawings denote the same elements. It should be understood by those skilled in the art that the above definitions are for explanation and illustration only and should not be construed as limiting the present disclosure.

[0027] In one embodiment of this disclosure, to complete the IV test of a photovoltaic module, before the IV test, the terminal head 101 of the test fixture 20 needs to be assembled with the terminal 201 on the photovoltaic module to realize the wiring operation between the photovoltaic module and the test fixture 20. Then, the photovoltaic module equipped with the test fixture 20 flows into the IV test area through the production line. After positioning, the ejector mechanism of the IV test mechanism can automatically contact the test fixture 20 and realize the automatic connection with the corresponding adapter of the photovoltaic module through the connection with the test fixture 20, thereby completing the IV test of the photovoltaic module. In this process, since one test fixture 20 corresponds to different photovoltaic modules, repeated insertion and removal will cause the connection between the terminal 201 and the terminal head 101 to be unstable. In addition, the vibration of the production line can also cause the terminal 201 and the terminal head 101 to loosen easily, all of which will affect the test accuracy.

[0028] In this regard, based on the specific implementation of this disclosure, refer to... Figures 1 to 5 As shown, a connection structure for an IV test fixture is provided for connecting a photovoltaic junction box 10 inserted along a first direction and a test fixture 20. The terminal head 101 of the photovoltaic junction box 10 is inserted into the terminal 201 of the test fixture 20 along the first direction. The connection structure includes: a first snap-fit ​​part 1, which is disposed in the photovoltaic junction box; a second snap-fit ​​part 2, which is disposed in the test fixture 20 and configured to snap-fit ​​with the first snap-fit ​​part 1 when the terminal head 101 is inserted into the terminal 201; and a drive assembly 3, which is connected to the IV test fixture 20 and is used to drive the first snap-fit ​​part 1 and the second snap-fit ​​part 2 to disengage.

[0029] With the above technical solution, when performing IV testing on photovoltaic modules, the test fixture 20 needs to be installed on the photovoltaic module first, so that the terminal head 101 of the photovoltaic junction box 10 on the photovoltaic module is inserted into the terminal 201 on the test fixture 20. By providing a first snap-fit ​​part 1 on the photovoltaic junction box 10 and a second snap-fit ​​part 2 on the test fixture 20, the first snap-fit ​​part 1 can engage with the second snap-fit ​​part 2 while the terminal head 101 and the terminal 201 are inserted, thus ensuring the connection stability between the photovoltaic junction box 10 and the test fixture 20. This ensures the stability and reliability of the insertion between the terminal head 101 on the photovoltaic junction box 10 and the terminal 201 on the test fixture 20, avoiding the problem of the terminal head 101 of the photovoltaic junction box 10 easily becoming loose due to repeated insertion and removal, and the problem of the terminal 201 easily falling off the terminal head 101 due to the vibration of the photovoltaic module on the production line. After the photovoltaic module testing is completed, the first latching part 1 and the second latching part 2 are disengaged by the drive component 3, allowing the test fixture 20 to be removed from the photovoltaic junction box 10. Simultaneously, the terminals 201 and terminal heads 101 are disconnected. Therefore, by setting up the connection structure, the reliability of the connection between the terminals 201 and the terminal heads 101 on the photovoltaic junction box 10 is ensured, thereby guaranteeing the test results of the IV test. Furthermore, the connection structure and drive component 3 enable convenient assembly and disassembly between the test fixture 20 and the photovoltaic module, thereby improving testing efficiency.

[0030] According to the embodiments provided in this disclosure, refer to Figure 2 and Figure 3 As shown, the first latching part 1 may include a first latch 11 that moves away from the photovoltaic junction box 10 along a first direction, and the second latching part 2 includes a second latch 21 that extends towards the first latch 11 along the first direction. The second latch 21 has an elasticity and a guide slope 223 at its end that cooperates with the first latch 11, so that the first latch 11 can pass over the second latch 21 and latch with the second latch 21. The driving component 3 is configured to deform the second latch 21 away from the first latch 11 along a second direction that is perpendicular to the first direction and disengage from the latch with the first latch 11.

[0031] Thus, when connecting the first latching part 1 and the second latching part 2, since the second latch 21 is elastic, during the process of bringing the second latch 21 and the first latch 11 closer to each other in the first direction, the second latch 21 can elastically deform in the second direction away from the first latch 11 until the second latch 21 passes the first latch 11. At this time, the second latch 21 returns to its original shape and can move closer to the first latch 11 in the second direction to achieve latching. Since the first latch 11 and the second latch 21 are latched along the guide slope 223, the situation where the second latch 21 will disengage from the first latch 11 in the second direction due to vibration or impact can be avoided, thus improving the reliability of the latching connection. After the test is completed, the second hook 21 is elastically deformed along the second direction away from the first hook 11 by the drive component 3, so that the first hook 11 and the second hook 21 are disengaged, so that the second hook 21 can be moved along the first direction away from the first hook 11, thus disconnecting the photovoltaic junction box 10 from the test work.

[0032] The end of the first hook 11 may also be provided with a buffer slope. When the second hook 21 approaches the first hook 11 along the first direction and comes into contact with the first hook 11, it can continue to move along the first direction along the buffer slope of the first hook 11. Thus, the buffer slope can guide the movement of the second hook 21 so that the second hook 21 can deform along the buffer slope in the direction away from the first hook 11. In addition, the buffer slope can buffer the contact and engagement between the first hook 11 and the second hook 21.

[0033] According to the embodiments provided in this disclosure, refer to Figure 2As shown, the IV test fixture 20 includes a terminal housing 202, which is used to accommodate a terminal 201 and has a first opening for a first hook 11 to extend into. A second hook 21 is connected to the inner side wall of the terminal housing 202 and is positioned to the side of the terminal 201. The drive assembly 3 includes an operating member that can reciprocate along a second direction through the side wall of the terminal housing 202 and engage with the second hook 21 to drive the second hook 21. In this way, the terminal housing 202 protects the first hook 11 and the second hook 21, preventing dust and other contaminants from entering the housing. This would increase the friction between the first hook 11 and the second hook 21, making them more prone to wear during engagement and affecting their service life. In addition, the terminal housing 202 can support the drive assembly 3 and the second hook 21, ensuring the connection stability between the second hook 21 and the drive assembly 3. Furthermore, the side wall of the terminal housing 202 can restrict the movement of the second hook 21 in the second direction, preventing the first hook 11 and the second hook 21 from easily disengaging due to impacts or other conditions, thus ensuring the reliability of the connection between the first hook 11 and the second hook 21.

[0034] On the other hand, since the second hook 21 and the operating member are both located on the side of the terminal 201, and the operating member is installed through the side wall of the terminal housing 202, the test fixture 20 can be removed from the photovoltaic junction box 10 at the same time as the first hook 11 and the second hook 21 are disengaged by the operating member. This makes the operation convenient, allowing the operator to operate the operating member with one hand while holding the terminal housing 202, thus improving the efficiency of disassembly and assembly of the test fixture 20.

[0035] According to the embodiments provided in this disclosure, refer to Figure 2 As shown, the second hook 21 includes a connecting section 211 and a snap-fit ​​section 222. The connecting section 211 is connected to the inner wall of the terminal housing 202. The snap-fit ​​section 222 extends in the same direction as the first hook 11 and forms a hook head at its end that is spaced apart from the inner side of the side wall of the terminal housing 202. The drive assembly 3 includes a connecting rod 32. The connecting rod 32 is fixedly connected to the snap-fit ​​section 222 and tends to extend inward to be fixedly connected to the inner end of the operating member, so that the inwardly moving operating member can drive the hook head of the second hook 21 to disengage from the hook head of the first hook 11 in the second direction.

[0036] In this way, by setting the extension direction of the snap-fit ​​section 222 to be consistent with the extension direction of the first snap hook 11, the first snap hook 11 and the snap-fit ​​section 222 can be aligned with each other during assembly, reducing the difficulty of operation. Because the hook head of the second snap hook 21 is spaced apart from the inner wall of the terminal housing 202, it provides movement space for the elastic deformation of the second snap hook 21, so as to realize the snap-fit ​​or disengagement operation. The hook head of the second snap hook 21 is located on the snap-fit ​​section 222, and the connecting rod 32 is fixedly connected to the snap-fit ​​section 222 and extends inward to be fixedly connected to the inner end 311. The connecting rod 32 is connected to the end of the snap-fit ​​section 222 away from the hook head of the second snap hook 21. Thus, when the driving member moves inward along the second direction, the connecting rod 32 will cause the end of the locking section 222 away from the hook head to move inward, causing the locking section 222 to tilt. This causes the end of the locking section 222 near the hook head to move outward, thereby enabling the locking section 222 to move the hook head of the second hook 21 outward along the second direction, disengaging it from the hook head of the first hook 11, thus disengaging the first hook 11 from the second hook 21. Furthermore, the operating member can be driven inward by pressing, making operation simple and facilitating the quick disassembly of the testing fixture 20.

[0037] According to the embodiments provided in this disclosure, refer to Figure 2 , Figure 4 and Figure 5 As shown, the drive assembly 3 also includes an elastic reset member 34, used to drive the operating member to elastically reset outward. Thus, after the operating member, via the connecting rod 32, disengages the second hook 21 from the first hook 11, the elastic reset member 34 drives the operating member to elastically reset outward. The connecting rod 32 can then cause the second hook 21 to return to its original shape, so that when the second hook 21 re-engages with the first hook 11, pressing the operating member can again release the engagement between the first hook 11 and the second hook 21. This simplifies the engagement and disengagement process between the first engaging part 1 and the second engaging part 2, avoids manual adjustment of the operating member's position, and improves the operational efficiency of the drive assembly 3 and the connecting structure.

[0038] According to the embodiments provided in this disclosure, refer to Figure 2 , 4 and Figure 5As shown, the elastic reset member 34 is constructed as a tension spring, and the operating member is a rod-shaped member 31 extending along the second direction. This rod-shaped member 31 has an outer end 312 and an inner end 311. The tension spring is sleeved on the rod-shaped member 31, with one end fixedly connected to the inner side wall of the terminal housing 202, and the other end fixedly connected to the inner end 311. Thus, when the operating member is pressed, the elastic reset member 34 extends, releasing the engagement between the first hook 11 and the second hook 21. At this point, when the pressing force on the operating member is released, the tension spring returns to its original deformation, enabling the inner end 311 to move closer to the inner side wall of the terminal housing 202, allowing the outer end 312 to move away from the side wall of the terminal housing 202 and return to its pre-press position. Therefore, when engaging again, pressing the outer end 312 can again release the engagement between the first hook 11 and the second hook 21. Furthermore, since the tension spring is sleeved on the rod-shaped member 31, the tension spring can extend or retract along the extension direction of the rod-shaped member 31, thereby preventing the tension spring from misaligning and dislodging from the rod-shaped member 31 and affecting the movement of the rod-shaped member 31 in the second direction. In other embodiments, the elastic reset member can also be a compression spring, which can also be sleeved on the rod-shaped member and arranged between the outer end of the rod-shaped member and the outer side wall of the terminal housing, thus achieving elastic reset of the operating member as well.

[0039] The outer end 312 can be constructed as a cylinder, and the cross-sectional area of ​​the outer end 312 is larger than the cross-sectional area of ​​the rod-shaped member 31. On the one hand, this can prevent the outer end 312 from entering the terminal housing 202 and causing inconvenience in operation. On the other hand, it increases the force-bearing area of ​​the outer end 312 so that the operator can perform pressing operations and save the applied force. This disclosure does not impose specific limitations on this.

[0040] According to the embodiments provided in this disclosure, refer to Figure 2 , Figure 4 and Figure 5 As shown, a guide rod 33 is connected to the inner end 311. The guide rod 33 extends along the first direction and slides in cooperation with the bottom wall of the terminal housing 202. In this way, by setting the guide rod 33, the guide rod 33 can keep the distance between the inner end 311 and the bottom wall of the terminal housing 202 constant. This prevents the locking section 222 from moving the inner end 311 inward through the connecting rod 32, causing the rod-shaped member 31 to tilt while the locking section 222 remains in the same position. This would prevent the first hook 11 and the second hook 21 from being unable to disengage.

[0041] According to the embodiments provided in this disclosure, refer to Figure 4 and Figure 5As shown, the inner side wall of the terminal housing 202 has a guide member 4, which has a guide groove 41 extending in the second direction for the operating member to slide through. In this way, the guide groove 41 can guide the movement of the operating member in the second direction, ensuring the smooth movement of the operating member and preventing the operating member from deviating from the second direction, which would affect the testing efficiency.

[0042] According to the embodiments provided in this disclosure, refer to Figure 1 , Figure 4 and Figure 5 As shown, there are two first latching parts 1 and two second latching parts 2, symmetrically arranged on both sides of the terminal 201. Correspondingly, there are two drive components 3, also symmetrically arranged. This latching and fixing of the terminal 201 on both sides ensures that the force on both sides of the terminal 201 is evenly distributed, guaranteeing the balance of the connection and preventing excessive force on one side from affecting the connection between the terminal 201 and the terminal head 101. Simultaneously, it improves the connection strength between the photovoltaic junction box 10 and the test fixture 20, preventing loosening due to unilateral force and ensuring the connection between the terminal 201 and the terminal head 101 is secure, thus improving the reliability and stability of the connection. Furthermore, the corresponding arrangement of the drive components 3 allows the operator to simultaneously press from both sides to disengage the first latching parts 1 and the second latching parts 2. It also facilitates the operator's simultaneous pressing of both sides with one hand while simultaneously removing the test fixture 20 from the photovoltaic junction box 10, improving operational convenience and disassembly efficiency.

[0043] According to a second aspect of this disclosure, an IV testing system is provided, comprising: a production line for conveying photovoltaic modules having photovoltaic junction boxes 10; a testing mechanism for performing IV testing on the photovoltaic modules; and a testing fixture 20 for fixing to the photovoltaic junction boxes 10, further comprising: a connection structure for the IV testing fixture as described above. Thus, in one embodiment, photovoltaic modules are placed on the production line. Before IV testing, the testing fixture needs to be installed on the photovoltaic modules so that when the photovoltaic modules flow to the testing area with the conveyor belt, the pin mechanism of the IV testing mechanism can automatically contact the testing fixture 20, and automatically connect to the corresponding adapter of the photovoltaic modules through the connection with the testing fixture 20. This enables rapid IV testing of the photovoltaic modules, avoiding wiring and positioning after the photovoltaic modules have flowed to the testing area, thus reducing testing efficiency.

[0044] Below, for reference Figures 1 to 5As shown, this disclosure will describe in detail the specific usage process of the connection structure for the IV test fixture 20 in conjunction with the above-described specific embodiments. When the test fixture 20 needs to be connected to the photovoltaic junction box 10, the first snap-fit ​​part 1 is first aligned with the first opening of the terminal housing 202. At this time, the first hook 11 can extend into the first opening along the first direction and contact the second hook 21, causing the second hook 21 to elastically deform away from the first hook 11 along the second direction until the first hook 11 passes over the first hook 11. The second hook 21 then recovers its deformation, moves closer to the first hook 11 along the second direction, and snaps into the first hook 11 along the guide slope 223. Since the first snap-fit ​​part 1 and the second snap-fit ​​part 2 are respectively provided on both sides of the terminal head 101 and the terminal 201, when the first hook 11 and the second hook 21 are aligned and snapped into each other, the terminal head 101 and the terminal 201 can be aligned and snapped into each other, thereby realizing the connection between the photovoltaic junction box 10 and the test fixture 20.

[0045] When the test fixture 20 needs to be removed from the photovoltaic junction box 10 after the test is completed, simply press the outer ends 312 on both sides of the terminal housing 202 with one hand to drive the inner end 311 to move inward in the second direction. This allows the inner end 311 to drive the connecting rod 32 connected to it to move inward. Due to the inward tilt of the connecting rod 32 and the guide rod 33's ability to limit the tilt of the rod-shaped member 31, the connecting rod 32 can simultaneously drive the end of the locking section 222 away from the hook head of the second hook 21 to move inward. At the same time, the end of the locking section 222 near the hook head of the second hook 21 can move outward, thereby driving the hook head of the second hook 21 to move outward in the second direction and disengage from the hook head of the first hook 11. At this point, move the second hook 21 away from the first hook 21 in the first direction to disassemble the test fixture 20.

[0046] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0047] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0048] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A connection structure for an IV test fixture, used to connect a photovoltaic junction box inserted along a first direction to the test fixture, wherein the terminal head of the photovoltaic junction box is inserted into the terminal of the test fixture along the first direction, characterized in that, The connection structure includes: The first snap-fit ​​part is disposed in the photovoltaic junction box; A second latching portion is disposed on the test fixture and configured to engage with the first latching portion when the terminal head is inserted into the terminal; and A driving component, connected to the IV test fixture, is used to drive the first snap-fit ​​part to disengage from the second snap-fit ​​part.

2. The connection structure for IV testing fixture according to claim 1, characterized in that, The first latching portion includes a first hook extending away from the photovoltaic junction box along the first direction, and the second latching portion includes a second hook extending towards the first hook along the first direction. The second hook is elastic and has a guide slope at its end that cooperates with the first hook, so that the first hook can pass over the second hook and latch with the second hook. The driving component is configured to cause the second hook to deform away from the first hook along a second direction perpendicular to the first direction and disengage from the latching with the first hook.

3. The connection structure for IV testing fixture according to claim 2, characterized in that, The IV test fixture includes a terminal housing for accommodating the terminal and having a first opening into which the first latch extends. A second latch is connected to the inner side wall of the terminal housing and positioned to the side of the terminal. The drive assembly includes an operating element that is reciprocally movable through the side wall of the terminal housing in a second direction and engages with the second latch to drive the second latch.

4. The connection structure for IV testing fixture according to claim 3, characterized in that, The second hook includes a connecting section and a snap-fit ​​section. The connecting section is connected to the inner wall of the housing, and the snap-fit ​​section extends in the same direction as the first hook and its end forms a hook head spaced apart from the inner side wall of the terminal housing. The drive assembly includes a link fixedly connected to the latching section and extending inwardly to be fixedly connected to the inner end of the operating member, such that the inwardly moving operating member can drive the hook head of the second latch to disengage outwardly from the hook head of the first latch in the second direction.

5. The connection structure for IV testing fixture according to claim 4, characterized in that, The drive assembly also includes an elastic reset element for driving the operating element to elastically reset outward.

6. The connection structure for IV testing fixture according to claim 5, characterized in that, The elastic reset component is constructed as a tension spring, and the operating component is a rod-shaped component extending along the second direction. The rod-shaped component has an outer end and an inner end. The tension spring is sleeved on the rod-shaped component, with one end fixedly connected to the inner side wall of the terminal housing and the other end fixedly connected to the inner end.

7. The connection structure for IV testing fixture according to claim 6, characterized in that, A guide rod is connected to the inner end, the guide rod extends along a first direction and slides in cooperation with the bottom wall of the terminal housing.

8. The connection structure for IV testing fixture according to claim 6, characterized in that, The inner side wall of the terminal housing has a guide member, which has a guide groove extending in a second direction for the operating member to slide through.

9. The connection structure for IV testing fixture according to any one of claims 1-8, characterized in that, The first and second latching parts are two in number and are symmetrically arranged on both sides about the terminal. The driving components are also two in number and are symmetrically arranged.

10. An IV testing system, comprising: A production line used to transport photovoltaic modules with photovoltaic junction boxes. A tester mechanism for performing IV testing on the photovoltaic module, and The test fixture, used for fixing to the photovoltaic junction box, is characterized in that it further includes: The connection structure for IV test fixtures according to any one of claims 1-9.

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