A dust cover and photovoltaic connection structure

Abstract

The utility model discloses a dust cover and a photovoltaic connection structure. The dust cover is applied to the connector of the photovoltaic module, and may include: a nesting part and a dust cover arranged at one end of the nesting part, wherein the nesting part matches the connection terminal of the connector and is sleeved on the connection terminal; the dust cover covers the end of the connection terminal; the dust cover includes a deformable detection area; the deformable detection area forms a plug-in hole for accommodating the plug-in and pull-out of the detection probe under the pressure applied by the detection probe; after the detection probe is pulled out, the deformable detection area is closed again to cover the plug-in hole. The dust cover can prevent sand and dust from entering the connection terminal of the connector of the photovoltaic module, and when it is sleeved on the connection terminal, it can still meet the requirements of detecting the connection terminal.

Description

Technical Field

[0001] The utility model relates to a dustproof cover and a photovoltaic connection structure. Background Art

[0002] In a photovoltaic power station, the photovoltaic modules are generally connected to each other through positive and negative connectors installed on the photovoltaic modules. However, since the positive connector is generally a cylindrical structure for accommodating the pins / cells of the negative connector, dust can easily enter the cylindrical structure of the positive connector before the photovoltaic modules are transported and placed in the power station for installation. Therefore, a dust cover needs to be installed for the positive connector to prevent dust from entering the positive connector.

[0003] For the dust cover of the existing positive connector, it is necessary to remove the dust cover before testing during the performance test of the photovoltaic module. After the test is completed, it needs to be reinstalled. The process is relatively complicated, resulting in low efficiency in photovoltaic module production and testing. Utility Model Content

[0004] In view of this, the utility model provides a dust cover and a photovoltaic connection structure. After the dust cover is installed on the positive connector of the photovoltaic module, the dust cover can be removed during the performance test of the photovoltaic module, and dust can be prevented from entering the connection terminal of the positive connector. Therefore, the dust cover structure can not only protect the connector from dust, but also help improve the production and testing efficiency of photovoltaic modules.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] In a first aspect, the utility model provides a dust cover applied to a connector of a photovoltaic module, the dust cover comprising: a nesting portion and a dust cover arranged at one end of the nesting portion, wherein:

[0007] The nesting portion matches the connecting terminal of the connector and is sleeved on the connecting terminal;

[0008] The dustproof portion covers the end of the connecting terminal;

[0009] The dustproof part includes a deformable detection area;

[0010] The deformable detection area forms an insertion hole for accommodating the insertion and removal of the detection probe when the pressure is applied by the detection probe;

[0011] After the detection probe is pulled out, the deformable detection area is closed again to cover the plug-in hole.

[0012] Optionally, the dustproof portion is an elastically deformable cover plate integrally formed with the nesting portion.

[0013] Optionally, the dustproof portion includes a first groove arranged in the middle area of ​​the elastically deformable cover plate;

[0014] The deformable detection area is located in the first groove.

[0015] Optionally, the dustproof portion comprises: a stopper arranged along the edge of one end of the nesting portion, a through hole surrounded by the stopper, and an elastic gasket, wherein:

[0016] The stopper cooperates with the end of the connecting terminal to limit the elastic gasket between the stopper and the end of the connecting terminal;

[0017] The middle area of ​​the elastic gasket is the deformable detection area.

[0018] Optionally, the stop platform includes a first assembly part;

[0019] The elastic gasket includes a second assembly part matching the first assembly part, wherein:

[0020] The second assembly part is assembled to the first assembly part.

[0021] Optionally, the dustproof portion includes a second groove arranged in the middle area of ​​the elastic gasket;

[0022] The deformable detection area is located in the second groove.

[0023] Optionally, a top of the second groove faces the connecting terminal.

[0024] Optionally, the deformable detection area is located at the top of the second groove.

[0025] Optionally, a deformable crack of any of the following structures is provided on the top of the second groove:

[0026] Any one of the shapes of “I”, V, U and cross.

[0027] In a second aspect, the utility model provides a photovoltaic connection structure, characterized by a connector and a dust cover provided in the embodiment of the first aspect and sleeved on the connection terminal of the connector.

[0028] Optionally, the connector is a positive connector.

[0029] The technical solution of the first aspect of the above utility model has the following advantages or beneficial effects:

[0030] The dust cover of the connector applied to the photovoltaic module provided by the embodiment of the utility model is arranged on the connecting terminal through the nesting part matching the connecting terminal of the connector, so that the dust cover is installed on the connecting terminal. After the dust cover is installed on the connecting terminal, the dust cover of the dust cover covers the end of the connecting terminal to prevent dust from entering the connecting terminal. Further, because the deformable detection area included in the dust cover forms a plug-in hole for accommodating the plug-in and pull-out of the detection probe under the pressure applied by the detection probe, the detection probe can enter the connecting terminal from the plug-in hole to detect the performance of the connecting terminal. After the detection probe is completed, after being pulled out from the plug-in hole, the deformable detection area is reclosed to cover the plug-in hole, so that the dust cover can still achieve the effect of blocking dust. Therefore, in the process of connecting the connecting terminal of the connector of the photovoltaic module, the dust cover provided by the utility model can be omitted, and dust can be prevented from entering the connecting terminal of the connector. Therefore, the dust cover structure can help improve the production and testing efficiency of photovoltaic modules while realizing dustproofing for the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural schematic diagram of a positive electrode connector provided by the prior art;

[0032] Figure 2 This is a structural schematic diagram of the relative relationship between the dust cover and the connector provided by the embodiment of the utility model;

[0033] Figure 3 It is a schematic diagram of the main structure of the dust cover installed on the connector according to an embodiment of the utility model;

[0034] Figure 4 It is a schematic cross-sectional structure diagram of a portion of a dust cover installed on a connector according to an embodiment of the utility model;

[0035] Figure 5 This is a schematic structural diagram of the relative relationship between the dust cover and the connector according to an embodiment of the utility model;

[0036] Figure 6 It is a schematic diagram of a partial cross-sectional structure of a dust cover installed on a connector according to an embodiment of the utility model;

[0037] Figure 7 It is a schematic cross-sectional structure diagram of a portion of a dust cover installed on a connector according to an embodiment of the utility model;

[0038] Figure 8 It is a schematic cross-sectional structure diagram of a portion of a dust cover installed on a connector according to an embodiment of the utility model;

[0039] Fig. 9 It is a structural schematic diagram of the change in the relative relationship between the elastic gasket and the probe in an embodiment of the utility model.

[0040] The reference numerals are as follows:

[0041] 10-dust cover; 11-nesting part; 12-dust part; 121-first groove; 122-stop platform; 1221-first assembly part; 123-through hole; 124-elastic gasket; 1241-second assembly part; 125-second groove; 20-connector; 21-connecting terminal; 22-connecting part; 23-housing; 24-boss; 25-limiting rod; 30-detection probe. DETAILED DESCRIPTION

[0042] At present, the existing dust cover used in the connector of the photovoltaic module needs to be removed before the detection is carried out when the connector of the photovoltaic module is tested or the performance of the photovoltaic module is tested through the connector. After the detection is completed, the existing dust cover needs to be reinstalled, which is a complicated operation. In order to solve the above problems of the existing dust cover, the embodiment of the utility model provides a dust cover and a photovoltaic connection structure.

[0043] The connector targeted by the dust cover in the embodiment of the utility model and the connector included in the photovoltaic connection structure are generally connectors used in the prior art, which are divided into a positive connector and a negative connector. The connector is used to connect the connection terminal of the junction box of the photovoltaic module and the external device to achieve the conduction between the photovoltaic module and the external device. Generally speaking, the positive connection terminal of the positive connector is a cylindrical structure, and the electrical connection copper core coil of the positive connection terminal is arranged on the inner wall of the cylindrical structure. After dust enters the cylindrical structure, the electrical connection copper core coil of the positive connection terminal is easily contaminated by dust, affecting the conductivity of the positive connector. The embodiment of the utility model is mainly aimed at the improvement of the dust cover of the positive connector of the photovoltaic module.

[0044] The cross section involved in the embodiment of the utility model refers to a partial cutting surface obtained by cutting along the extension direction of the axis of the dust cover.

[0045] in, Figure 1 The structural schematic diagram of the positive electrode connector targeted by the present utility model is given as an example. Figure 1 As shown, the positive connector includes a connection terminal 21 connected to an external device (wherein the external device can be connected to the negative connector via the positive connector). Figure 1 The positive connector comprises a connecting terminal 21 connected to the positive electrode, a connecting portion 22 connected to the junction box, and a housing 23 enclosing the connecting terminal 21 and the connecting portion 22. The housing 23 is provided with a boss 24 engaged with the negative connector, a stop rod 25, etc. It is worth noting that the positive connector is an existing structure.

[0046] It can be understood that based on the structure of the existing positive connector, when those skilled in the art set the connection terminal of the negative connector to a cylindrical structure, the dust cover provided by the utility model can also be applied to the deformed negative connector.

[0047] Figure 2 and Figure 3 A schematic diagram of the three-dimensional structure of the dust cover and the photovoltaic connection structure provided by the embodiment of the utility model is shown; Figures 4 to 8 A schematic cross-sectional structure diagram showing the relative relationship between the dust cover and the connector provided by an embodiment of the utility model; Fig. 9 A schematic diagram showing the change in the relationship between the dustproof portion of the dustproof cover provided by the embodiment of the utility model during the probe detection process is shown.

[0048] like Figures 2 to 8 The dust cover 10 provided in the embodiment of the utility model shown is applied to the connector 20 of the photovoltaic module. The connector 20 is generally a positive connector. Figures 2 to 8 As shown, the dust cover 10 may include: a nesting portion 11 and a dustproof portion 12 disposed at one end of the nesting portion 11, wherein:

[0049] The nesting portion 11 matches with the connection terminal 21 of the connector 20 and is sleeved on the connection terminal 21;

[0050] The dustproof portion 12 covers the end of the connection terminal 21;

[0051] The dustproof part 12 includes a deformable detection area;

[0052] The deformable detection area forms an insertion hole for accommodating the insertion and removal of the detection probe when the pressure is applied by the detection probe;

[0053] After the detection probe is pulled out, the deformable detection area is closed again to cover the plug-in hole.

[0054] Among them, the matching of the nesting portion 11 and the connecting terminal 21 of the connector 20 generally means that the structure enclosed by the inner wall of the nesting portion 11 is the same as the outer wall structure of the connecting terminal 21, and after the nesting portion 11 is sleeved on the connecting terminal 21, the inner wall of the nesting portion 11 fits with the outer wall of the connecting terminal 21 so that the nesting portion 11 will not fall off from the connecting terminal 21 naturally.

[0055] It is understandable that the embodiment of the present invention only exemplarily shows that the connecting terminal 21 is a cylindrical structure, and the connecting terminal can also be a structure of other shapes such as a rectangular parallelepiped.

[0056] The deformable detection area included in the dustproof part means that there is an area in the dustproof part where a crack that can be opened and closed can be pre-set. When subjected to external pressure, the crack appears, and after the external pressure disappears, the crack closes again. The crack can be any one of the shapes of "I", "V", "U" and "X".

[0057] In addition, the deformable detection area can also be a complete plane or concave surface, and can allow the probe to pierce to form an insertion hole. After the probe is pulled out, the structure of the probe piercing area is gathered again to re-close the piercing hole of the probe, that is, the dustproof part is restored to its original state, thereby achieving a dustproof effect.

[0058] The dust cover of the connector applied to the photovoltaic module provided by the embodiment of the utility model is installed on the connection terminal by a nesting part matching the connection terminal of the connector. After the dust cover is installed on the connection terminal, the dust cover of the dust cover covers the end of the connection terminal to prevent dust from entering the connection terminal. Further, because the deformable detection area included in the dust cover forms a plug-in hole for accommodating the plug-in and pull-out of the detection probe under the pressure applied by the detection probe, the detection probe can enter the connection terminal from the plug-in hole to detect the performance of the connection terminal. After the detection probe is completed, after being pulled out from the plug-in hole, the deformable detection area is reclosed to cover the plug-in hole, so that the dust cover can still achieve the effect of blocking dust. Therefore, in the process of connecting the connection terminal of the connector of the photovoltaic module, the dust cover provided by the utility model can be omitted, and dust can be prevented from entering the connection terminal of the connector. Therefore, the dust cover structure can help improve the production and testing efficiency of photovoltaic modules while realizing dust protection for the connector.

[0059] In addition, for wider photovoltaic modules, the split junction box is arranged on both sides of the photovoltaic module in the width direction. Since the dust cover provided by the embodiment of the utility model does not need to be plugged in or out during the detection process, the dust cover can be installed on the positive connector at the supplier. In the subsequent photovoltaic module production process, only the dust cover needs to be installed on the negative connector, and there is no need to assign installers to install the dust cover on the positive connector separately, which effectively simplifies the photovoltaic module production process. The positive connector is subsequently tested by a probe without removing the dust cover, making the entire test more convenient.

[0060] The dustproof portion 12 in the dustproof cover 10 provided in the embodiment of the utility model can have various structures.

[0061] Specifically, Figures 2 to 4 As shown, the first structure of the dustproof portion 12 may be: an elastically deformable cover plate integrally formed with the nesting portion 11 .

[0062] The dustproof part and the nesting part are made of an elastic material such as rubber.

[0063] The cover plate may be a planar structure or may be Figure 4 As shown, the dustproof portion 12 may include a first groove 121 disposed in the middle area of ​​the elastically deformable cover plate;

[0064] The deformable detection area is located in the first groove 121 .

[0065] The first groove 121 is generally formed simultaneously during the formation of the dustproof portion 12 .

[0066] The first groove 121 is provided to facilitate the positioning of the detection probe. In addition, the area corresponding to the first groove 121 is relatively thin, which facilitates the insertion and removal of the detection probe.

[0067] The top of the first groove 121 may be provided with a crack, and the crack may be any one of an I-shape, a V-shape, a U-shape and a X-shape.

[0068] Furthermore, if Figures 5 to 8 As shown, the second structure of the dustproof part 12 can be:

[0069] The dustproof part 12 includes: a stopper 122 arranged along the edge of one end of the nesting part 11, a through hole 123 surrounded by the stopper 122, and an elastic gasket 124, wherein:

[0070] The stopper 122 cooperates with the end of the connection terminal 21 to limit the elastic gasket 124 between the stopper 122 and the end of the connection terminal 21;

[0071] The middle area of ​​the elastic gasket 124 is a deformable detection area.

[0072] The stopper 122 and the nesting portion 11 can be integrally formed. The stopper 122 and the nesting portion 11 can be made of PVC, polyethylene, etc.

[0073] The separate design of the elastic gasket 124 and the stopper 122 allows air to pass through the through hole 123 surrounded by the stopper 122, which facilitates the removal of the dust cover 10 when the connector is subsequently connected to an external device.

[0074] In order to better fix the elastic gasket 124, the following can be done: Figure 6 As shown, a glue spot is applied on the fixed elastic gasket 124, and the elastic gasket 124 is bonded to the stop platform 122 through the glue spot.

[0075] Furthermore, if Figure 7As shown, the third structure of the dustproof part 12 may be: on the basis of the second structure of the dustproof part 12, a first assembly part 1221 and a second assembly part 1241 are additionally provided.

[0076] Specifically, the stopper 122 includes a first assembly part 1221;

[0077] The elastic gasket 124 includes a second assembly part 1241 matching the first assembly part 1221, wherein:

[0078] The second assembly part 1241 is assembled on the first assembly part 1221 .

[0079] like Figure 7 As shown, the first assembly part 1221 may be a groove, and correspondingly, the second assembly part 1241 is a protrusion matching the groove.

[0080] In addition, the first assembly part 1221 may also be a protrusion, and correspondingly, the second assembly part 1241 is a groove matching the protrusion.

[0081] Furthermore, if Figure 8 As shown, the elastic gasket 124 can also be designed as a cover-shaped structure, and the elastic gasket 124 with the cover-shaped structure is buckled on the end of the connecting terminal 21 to better stabilize the elastic gasket 124 and facilitate the subsequent removal of the dust cover.

[0082] Furthermore, with respect to the second structure and the third structure of the dustproof part 12, the dustproof part 12 may further include a second groove 125 disposed in the middle area of ​​the elastic gasket 124; wherein,

[0083] The deformable detection area is located in the second groove 125 .

[0084] The top of the second groove 125 faces the connecting terminal 21 .

[0085] The deformable detection area is located at the top of the second groove 125 .

[0086] The top of the second groove 125 is provided with a deformable crack of any of the following structures: any of “I”-shaped, V-shaped, U-shaped and cross-shaped.

[0087] Taking the elastic gasket 124 designed with the second groove 125 as an example, the following describes in detail how the detection probe detects the positive electrode connector through the second groove 125.

[0088] like Fig. 9As shown, before the detection probe 30 detects, the top of the second groove 125 of the elastic gasket 124 is in a closed state to achieve the end of the closed connection terminal. After the detection probe 30 is inserted through the top of the second groove 125, the detection probe 30 can be connected to the electrical connection coil inside the connection terminal to achieve the detection of the positive connector and the photovoltaic module. After the detection is completed, the top of the second groove 125 of the elastic gasket 124 is restored to a closed state.

[0089] Among them, for the first structure of the dustproof part 12, the detection probe 30 is inserted into the dustproof part 12 in the same manner as Fig. 9 Similar, no further elaboration is required here.

[0090] Furthermore, the embodiment of the utility model provides a photovoltaic connection structure. Figures 2 to 8 As shown, the photovoltaic connection structure may include a connector 20 and a dust cover 10 provided in any of the above embodiments and sleeved on a connection terminal 21 of the connector 20 .

[0091] The connector 20 is a positive electrode connector.

[0092] The introduction provided in the above steps is only used to help understand the method, structure and core idea of ​​the utility model. For ordinary technicians in this technical field, the utility model can also be improved and modified without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A dust cover, characterized in that: A connector (20) applied to a photovoltaic module comprises: a nesting portion (11) and a dustproof portion (12) arranged at one end of the nesting portion (11), wherein: The nesting portion (11) matches the connecting terminal (21) of the connector (20) and is sleeved on the connecting terminal (21); The dustproof portion (12) covers the end of the connecting terminal (21); The dustproof portion (12) includes a deformable detection area; The deformable detection area forms an insertion hole for accommodating the insertion and removal of the detection probe when the pressure is applied by the detection probe; After the detection probe is pulled out, the deformable detection area is closed again to cover the plug-in hole.

2. The dust cover according to claim 1, characterized in that: The dustproof portion (12) is an elastically deformable cover plate integrally formed with the nesting portion (11).

3. The dust cover according to claim 2, characterized in that: The dustproof portion (12) comprises a first groove (121) arranged in the middle area of ​​the elastically deformable cover plate; The deformable detection area is located in the first groove (121).

4. The dust cover according to claim 1, characterized in that: The dustproof portion (12) comprises: a stopper (122) arranged along the edge of one end of the nesting portion (11), a through hole (123) surrounded by the stopper (122), and an elastic gasket (124), wherein: The stop platform (122) cooperates with the end of the connecting terminal (21) to limit the elastic gasket (124) between the stop platform (122) and the end of the connecting terminal (21); The middle area of ​​the elastic gasket (124) is the deformable detection area.

5. The dust cover according to claim 4, characterized in that: The stopping platform (122) comprises a first assembly part (1221); The elastic gasket (124) includes a second assembly part (1241) matching the first assembly part (1221), wherein: The second assembly part (1241) is assembled on the first assembly part (1221).

6. The dust cover according to any one of claims 4 or 5, characterized in that: The dustproof portion (12) comprises a second groove (125) arranged in the middle area of ​​the elastic gasket (124); The deformable detection area is located in the second groove (125).

7. The dust cover according to claim 6, characterized in that: The top of the second groove (125) faces the connecting terminal (21); and / or, The deformable detection area is located at the top of the second groove (125).

8. The dust cover according to claim 6, characterized in that: The top of the second groove (125) is provided with a deformable crack of any of the following structures: Any one of the shapes of "I", V, U and cross.

9. A photovoltaic connection structure, characterized in that: A connector (20) and a dust cover (10) according to any one of claims 1 to 8 and mounted on a connecting terminal (21) of the connector (20).

10. The photovoltaic connection structure according to claim 9, characterized in that: The connector (20) is a positive electrode connector.

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