Battery assembly and grounding connection device thereof, and photovoltaic system

Abstract

The utility model is suitable for the technical field of solar cells, and provides a cell module and a grounding connection device thereof, and a photovoltaic system. The grounding connection device of the battery assemblies comprises a connecting piece and a plurality of clamps, the connecting piece accommodates a conductor, and the clamps are respectively located at a plurality of end parts of the connecting piece and respectively clamp frames of the plurality of battery assemblies; each clamp is electrically conducted with the conductor, the barbs of the clamps pierce the oxide layer of the frame of the corresponding battery assembly, and the plurality of battery assemblies are electrically conducted through the clamps and the conductor. Therefore, the barbs of the clamp at the end part of the connecting piece are utilized to pierce the oxide layers of the plurality of battery components, so that the conductor accommodated in the connecting piece is electrically conducted with the plurality of battery components, the grounding conduction among the plurality of battery components can be simply and conveniently realized, and the efficiency of grounding connection among the plurality of photovoltaic components can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of solar cells, and in particular, relates to a battery assembly and a grounding connection device thereof, and a photovoltaic system. Background Art

[0002] Solar panels can convert sunlight into electrical energy. In the related art, the two ends of the conductor are usually fixed to the grounding holes on the two solar panels by bolts, so as to achieve the grounding connection between adjacent solar panels, and then achieve grounding through the guide rail and the grounding grid. However, in this way, the process of indirect connection of the components is relatively cumbersome, the installation is time-consuming, and the efficiency is low. Based on this, how to improve the efficiency of the grounding connection between photovoltaic panels has become an urgent problem to be solved. Utility Model Content

[0003] The present application provides a battery assembly and a grounding connection device thereof, and a photovoltaic system, aiming to solve the problem of how to improve the efficiency of the grounding connection between photovoltaic assemblies.

[0004] The grounding connection device of the battery assembly provided in the present application includes a connector and a plurality of clips, wherein the connector accommodates a conductor, and the plurality of clips are respectively located at the plurality of ends of the connector, respectively clamping the frames of a plurality of battery assemblies; each of the clips is electrically connected to the conductor, and the barbs of the clip pierce the oxide layer of the frame of the corresponding battery assembly, and the plurality of battery assemblies are electrically connected to the conductor through the clips.

[0005] Specifically, the clip includes a connecting portion and a clamping portion, the connecting portion is connected to the end of the connector, and the clamping portion clamps the frame of the battery assembly.

[0006] Specifically, the connecting portion is arranged at the periphery of the end portion of the connecting piece, and a notch is formed in the connecting portion.

[0007] Specifically, the clamping portion includes a first clamping wall and a second clamping wall, the first clamping wall extends from the connecting portion, the second clamping wall is bent outward from an end of the first clamping wall away from the connecting portion and extends toward the connecting portion, the first clamping wall and the second clamping wall respectively press against two sides of the frame of the battery assembly, and clamp the frame of the battery assembly between the first clamping wall and the second clamping wall.

[0008] Specifically, the barb protrudes from the first clamping wall toward the second clamping wall.

[0009] Specifically, the barb is arc-shaped, rising from the first clamping wall, and bending toward the insertion direction of the frame of the battery assembly.

[0010] Specifically, the clamping portion includes a bending portion, and the bending portion is bent from the second clamping wall toward one end of the connecting portion in a direction away from the first clamping wall.

[0011] Specifically, the turning point between the bent portion and the second clamping wall is arc-shaped.

[0012] The battery assembly provided in the present application includes a grounding connection device of any of the above-mentioned battery assemblies.

[0013] The photovoltaic system provided in the present application includes any one of the above-mentioned battery components.

[0014] The battery assembly and its ground connection device and photovoltaic system in the embodiments of the present application utilize the barbs of the clamp at the end of the connector to pierce the oxide layers of multiple battery assemblies, so that the conductor housed in the connector electrically conducts the multiple battery assemblies. This can simply and conveniently achieve grounding conduction between multiple battery assemblies, which is beneficial to improving the efficiency of grounding connections between multiple photovoltaic assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural schematic diagram of a ground connection device according to an embodiment of the present application;

[0016] Figure 2 is a schematic structural diagram of a battery assembly according to an embodiment of the present application;

[0017] Figure 3 is an enlarged schematic diagram of a partial structure of a battery assembly according to an embodiment of the present application;

[0018] Figure 4 is a schematic structural diagram of a clamp of a ground connection device according to an embodiment of the present application;

[0019] Description of main component symbols:

[0020] The ground connection device 10 , the connector 11 , the conductor 13 , the clip 12 , the barb 120 , the connection portion 121 , the clamping portion 122 , the first clamping wall 1221 , the second clamping wall 1222 , the bending portion 1223 , the notch 123 , the battery assembly 100 , and the frame 20 . DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application. In addition, it should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0022] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "left", "right", "horizontal", "top", "bottom", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the various specific processes and examples of materials provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use scenarios of other materials.

[0027] In the present application, the barbs of the clamp at the end of the connector are used to pierce the oxide layers of multiple battery assemblies, so that the conductor housed in the connector is electrically connected to the multiple battery assemblies. This can simply and conveniently achieve grounding connection between the multiple battery assemblies, which is beneficial to improving the efficiency of the grounding connection between multiple photovoltaic modules.

[0028] Embodiment 1

[0029] See also Figure 1 , Figure 2 and Figure 3 The grounding connection device 10 of the battery assembly 100 of the embodiment of the present application includes a connector 11 and a plurality of clips 12. The connector 11 accommodates a conductor 13. The plurality of clips 12 are respectively located at the plurality of ends of the connector 11, and respectively clamp the frames 20 of the plurality of battery assemblies 100. Each clip 12 is electrically connected to the conductor 13. The barbs 120 of the clip 12 pierce the oxide layer of the frame 20 of the corresponding battery assembly 100. The plurality of battery assemblies 100 are electrically connected to the conductor 13 through the clips 12.

[0030] The grounding connection device 10 of the battery assembly 100 in the embodiment of the present application utilizes the barb 120 of the clamp 12 at the end of the connector 11 to pierce the oxide layer of multiple battery assemblies 100, so that the conductor 13 accommodated in the connector 11 is electrically connected to the multiple battery assemblies 100, which can simply and conveniently achieve grounding connection between multiple battery assemblies 100, which is beneficial to improving the efficiency of grounding connection between multiple photovoltaic modules.

[0031] In this embodiment, the connecting member 11 is a connecting rod, and there are two clips 12, which are respectively located at the two ends of the connecting rod, respectively clamping the frames 20 of the two battery assemblies 100, and the two clips 12 are electrically connected to the conductor 13. The barbs 120 of the clips 12 pierce the oxide layer of the frame 20 of the corresponding battery assembly 100, and the two battery assemblies 100 are electrically connected through the clips 12 and the conductor 13.

[0032] It is understood that in other embodiments, the number of the clips 12 may be three, four, five or other numbers. The connecting member 11 may be a connecting frame with multiple ends. For example, the connecting member 11 is a cross, and the number of the clips 12 is four. These are only examples, and the specific form of the connecting member 11 and the specific number of the clips 12 are not limited here.

[0033] Specifically, the conductor 13 includes at least one of a wire and a round steel. The conductor 13 in this embodiment is a wire. The specific form of the conductor 13 is not limited here, as long as it can electrically conduct the multiple clips 12.

[0034] Specifically, each clip 12 is located at one end of the connector 11 and clamps the frame 20 of a battery assembly 100 .

[0035] Specifically, the barbs 120 of the clip 12 pierce the oxide layer of the frame 20 of the corresponding battery assembly 100, so that the clip 12 is electrically connected to the battery assembly 100, and each clip 12 is electrically connected to the conductor 13, so that multiple battery assemblies 100 are electrically connected through the clip 12 and the conductor 13. In this way, multiple battery assemblies 100 can be electrically connected.

[0036] It is understood that at least one of the multiple battery assemblies 100 that are electrically connected can be electrically connected to the grounding grid. For example, at least one of the multiple battery assemblies 100 that are electrically connected can be electrically connected to the guide rail, and the guide rail can be electrically connected to the grounding grid. In this way, the grounding of the multiple battery assemblies 100 can be achieved.

[0037] Specifically, the number of the barbs 120 can be one or more, which is not limited here.

[0038] Embodiment 2

[0039] See also Figure 1 , Figure 2 and Figure 3 In some embodiments, the clip 12 includes a connecting portion 121 and a clamping portion 122 , the connecting portion 121 is connected to an end of the connector 11 , and the clamping portion 122 clamps the frame 20 of the battery assembly 100 .

[0040] In this way, the connecting portion 121 and the clamping portion 122 of the clip 12 can be used to connect one end of the clip 12 to the connecting member 11 and the other end to the frame 20 .

[0041] Specifically, the connection portion 121 cooperates with the end of the connection member 11. For example, the connection portion 121 is located at the periphery of the end of the connection member 11, and the inner wall of the connection portion 121 matches the outer wall of the end of the connection member 11; for another example, the end of the connection member 11 is located at the periphery of the connection portion 121, and the inner wall of the end of the connection member 11 matches the outer wall of the connection portion 121.

[0042] Specifically, the connecting portion 121 and the end of the connecting member 11 may be connected by snap connection, threaded connection, riveting, bonding or other methods, which are not limited here.

[0043] Embodiment 3

[0044] See also Figure 4 In some embodiments, the connecting portion 121 is disposed at the periphery of the end portion of the connecting member 11 , and a notch 123 is formed in the connecting portion 121 .

[0045] In this way, the notch 123 can be used to form an adjustable space, which can accommodate more ends with different sizes.

[0046] Specifically, after the connecting portion 121 is sleeved on the end of the connecting member 11 , the connecting portion 121 is locked and the notch 123 is closed, thereby fixing the connecting portion 121 to the periphery of the connecting member 11 .

[0047] Specifically, the end faces on both sides of the notch 123 match each other. In this way, after the notch 123 is closed, the end faces on both sides of the notch 123 will not interfere with each other.

[0048] Specifically, the notch 123 is located on the side of the connector 11 away from the clamping portion 122. In this way, the notch 123 is prevented from being interfered by the clamping portion 122 when being closed, which is beneficial to improving assembly efficiency.

[0049] Specifically, the connecting portion 121 is cylindrical, so that it is convenient to be sleeved on the end of the connecting member 11 .

[0050] Embodiment 4

[0051] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments, the clamping portion 122 includes a first clamping wall 1221 and a second clamping wall 1222, the first clamping wall 1221 extends from the connecting portion 121, and the second clamping wall 1222 is bent outward from one end of the first clamping wall 1221 away from the connecting portion 121 and extends toward the connecting portion 121, the first clamping wall 1221 and the second clamping wall 1222 respectively press against two sides of the frame 20 of the battery assembly 100, and clamp the frame 20 of the battery assembly 100 between the first clamping wall 1221 and the second clamping wall 1222.

[0052] In this way, by extending and turning the first clamping wall 1221 and the second clamping wall 1222 from the connecting portion 121 to form an area for clamping the frame 20, mutual interference between the clamping portion 122 and the connecting portion 121 can be avoided, which is beneficial to improving assembly efficiency.

[0053] Specifically, the spacing between the first clamping wall 1221 and the second clamping wall 1222 gradually increases in the direction away from the inserted frame 20. In this way, the deep part of the first clamping wall 1221 and the second clamping wall 1222 has enough space to accommodate the frame 20, avoiding the frame 20 from stretching the two clamping walls, thereby reducing the risk of the clip 12 being loosened from the frame 20. At the same time, the shallow part of the first clamping wall 1221 and the second clamping wall 1222 is relatively narrow, making it difficult for the frame 20 to detach from the clamp 12, which is conducive to improving the stability of the clamp 12 clamping the frame 20.

[0054] Specifically, the first clamping wall 1221 may be formed with an anti-skid protrusion. The second clamping wall 1222 may be formed with an anti-skid protrusion. In this way, the risk of the frame 20 being loosened from the clip 12 is further reduced.

[0055] Embodiment 5

[0056] See also Figure 1 and Figure 4 In some embodiments, the barb 120 protrudes from the first clamping wall 1221 to the second clamping wall 1222 .

[0057] In this way, the barb 120 is formed on the first clamping wall 1221 extending from the connecting portion 121 , and is difficult to be pushed away by the frame 20 , and is more likely to pierce the oxide layer of the frame 20 .

[0058] It is understood that in other embodiments, the barbs 120 may also protrude from the second clamping wall 1222 toward the first clamping wall 1221. In other embodiments, the barbs 120 may also be provided on both the first clamping wall 1221 and the second clamping wall 1222.

[0059] Embodiment 6

[0060] See also Figure 1 and Figure 4 In some embodiments, the barb 120 is arc-shaped, rising from the first clamping wall 1221 and bending toward the insertion direction of the frame 20 of the battery assembly 100 .

[0061] In this way, the bending direction of the barb 120 faces the insertion direction of the frame 20 rather than away from the insertion direction of the frame 20, which can reduce the risk of the barb 120 hindering the insertion of the frame 20 and make the oxide layer of the frame 20 more easily punctured by the barb 120.

[0062] Specifically, the end of the barb 120 away from the first clamping wall 1221 is in a needle-like or saw-toothed shape, so that the barb 120 is sharper and easier to pierce the oxide layer of the frame 20.

[0063] Embodiment 7

[0064] See also Figure 1 and Figure 4In some embodiments, the clamping portion 122 includes a bending portion 1223 , and the bending portion 1223 is bent from one end of the second clamping wall 1222 toward the connecting portion 121 in a direction away from the first clamping wall 1221 .

[0065] In this way, when removing the card clip 12 from the frame 20 , the bending portion 1223 can be grasped to increase the distance between the two clamping walls, so that the card clip 12 can be removed from the frame 20 more conveniently.

[0066] Embodiment 8

[0067] See also Figure 1 and Figure 4 In some embodiments, the turning point between the bending portion 1223 and the second clamping wall 1222 is arc-shaped.

[0068] In this way, the turning point between the bent portion 1223 and the second clamping wall 1222 is smoother, which can prevent the frame 20 from being damaged when inserted, and can also make the frame 20 more smoothly inserted into the clip 12, which is conducive to improving assembly efficiency.

[0069] Embodiment 9

[0070] The battery assembly 100 of the embodiment of the present application includes the grounding connection device 10 of the battery assembly 100 of any one of the first to eighth embodiments.

[0071] The battery assembly 100 of the embodiment of the present application, in the grounding connection device 10, utilizes the barb 120 of the clamp 12 at the end of the connector 11 to pierce the oxide layer of multiple battery assemblies 100, so that the conductor 13 accommodated in the connector 11 is electrically connected to the multiple battery assemblies 100, which can simply and conveniently achieve grounding connection between multiple battery assemblies 100, which is beneficial to improving the efficiency of grounding connection between multiple photovoltaic modules.

[0072] In this embodiment, multiple solar cells in the battery assembly 100 can be connected in series in sequence to form a battery string, thereby realizing the series bus output of current. For example, the series connection of battery cells can be realized by setting welding strips (bus bars, interconnecting strips), conductive backplanes, etc.

[0073] It is understandable that in such an embodiment, the battery assembly 100 may also include a metal frame, a back plate, photovoltaic glass and an adhesive film. The adhesive film may be filled between the front and back of the solar cell and the photovoltaic glass, adjacent cells, etc. As a filler, it may be a transparent colloid with good light transmittance and aging resistance. For example, the adhesive film may be an EVA adhesive film or a POE adhesive film. The specific selection may be based on actual conditions and is not limited here.

[0074] Photovoltaic glass can cover the adhesive film on the front of the solar cell. The photovoltaic glass can be ultra-white glass, which has high light transmittance, high transparency, and excellent physical, mechanical and optical properties. For example, the light transmittance of ultra-white glass can reach more than 92%, which can protect the solar cell without affecting the efficiency of the solar cell as much as possible. At the same time, the adhesive film can bond the photovoltaic glass and the solar cell together. The presence of the adhesive film can seal and insulate the solar cell and make it waterproof and moisture-proof.

[0075] The backplane can be attached to the adhesive film on the back of the solar cell. The backplane can protect and support the solar cell and has reliable insulation, water resistance and aging resistance. There are multiple options for the backplane, which can usually be tempered glass, organic glass, aluminum alloy TPT composite adhesive film, etc. It can be set according to the specific situation and is not limited here. The whole composed of the backplane, solar cell, adhesive film and photovoltaic glass can be set on a metal frame. The metal frame serves as the main external support structure of the entire battery assembly 100 and can stably support and install the battery assembly 100. For example, the battery assembly 100 can be installed at the required installation position through the metal frame.

[0076] Embodiment 10

[0077] The photovoltaic system of the embodiment of the present application includes the battery assembly 100 of the ninth embodiment.

[0078] In the photovoltaic system of the embodiment of the present application, in the grounding connection device 10, the barb 120 of the clamp 12 at the end of the connector 11 is used to pierce the oxide layer of multiple battery assemblies 100, so that the conductor 13 accommodated in the connector 11 is electrically connected to the multiple battery assemblies 100, which can simply and conveniently achieve grounding connection between the multiple battery assemblies 100, which is beneficial to improving the efficiency of the grounding connection between multiple photovoltaic assemblies.

[0079] In this embodiment, the photovoltaic system can be applied to photovoltaic power stations, such as ground power stations, rooftop power stations, water power stations, etc., and can also be applied to equipment or devices that use solar energy to generate electricity, such as user solar power supplies, solar street lights, solar cars, solar buildings, etc. Of course, it can be understood that the application scenarios of the photovoltaic system are not limited to this, that is, the photovoltaic system can be applied in all fields that require solar energy to generate electricity. Taking the photovoltaic power generation system network as an example, the photovoltaic system may include a photovoltaic array, a junction box and an inverter. The photovoltaic array may be an array combination of multiple battery assemblies 100. For example, multiple battery assemblies 100 can form multiple photovoltaic arrays. The photovoltaic array is connected to the junction box. The junction box can converge the current generated by the photovoltaic array. The converged current flows through the inverter and is converted into the alternating current required by the mains power grid and then connected to the mains network to realize solar power supply.

[0080] In the description of this specification, the description with reference to the terms "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0081] In addition, the above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A grounding connection device for a battery assembly, characterized in that: It includes a connector and a plurality of clips, wherein the connector accommodates a conductor, and the plurality of clips are respectively located at a plurality of ends of the connector to respectively clamp the frames of a plurality of battery assemblies; each of the clips is electrically connected to the conductor, and the barbs of the clips pierce the oxide layer of the frame of the corresponding battery assembly, and the plurality of battery assemblies are electrically connected to the conductor via the clips.

2. The grounding connection device of the battery assembly according to claim 1, characterized in that: The clamp includes a connecting portion and a clamping portion, wherein the connecting portion is connected to the end of the connector, and the clamping portion clamps the frame of the battery assembly.

3. The ground connection device of the battery assembly according to claim 2, characterized in that: The connecting portion is arranged at the periphery of the end portion of the connecting piece, and a notch is formed in the connecting portion.

4. The ground connection device of the battery assembly according to claim 2, characterized in that: The clamping portion includes a first clamping wall and a second clamping wall, the first clamping wall extends from the connecting portion, the second clamping wall is bent outward from an end of the first clamping wall away from the connecting portion and extends toward the connecting portion, the first clamping wall and the second clamping wall respectively press against two sides of the frame of the battery assembly, and clamp the frame of the battery assembly between the first clamping wall and the second clamping wall.

5. The ground connection device of the battery assembly according to claim 4, characterized in that: The barbs protrude from the first clamping wall toward the second clamping wall.

6. The ground connection device of the battery assembly according to claim 5, characterized in that: The barb is arc-shaped, rising from the first clamping wall and bending toward the insertion direction of the frame of the battery assembly.

7. The ground connection device of the battery assembly according to claim 4, characterized in that: The clamping portion includes a bending portion, and the bending portion is bent from the second clamping wall toward one end of the connecting portion in a direction away from the first clamping wall.

8. The ground connection device of the battery assembly according to claim 7, characterized in that: The turning point between the bent portion and the second clamping wall is arc-shaped.

9. A battery assembly, characterized in that: A grounding connection device for a battery assembly comprising any one of claims 1-8.

10. A photovoltaic system, characterized in that: A battery assembly comprising the battery assembly of claim 9.

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