Fixing element, energy storage device and photovoltaic device

Abstract

This application relates to a fastener, an energy storage device, and a photovoltaic device. The fastener is used to connect a power module to a carrier with mounting holes. The fastener includes: a first abutment portion and a second abutment portion configured to abut against the power module; and a connecting portion located between the first and second abutment portions and connected to both abutment portions. The connecting portion is configured to connect to the carrier via a connector passing through the mounting holes. This allows the force applied to the connecting portion by the connector to be distributed to the first and second abutment portions, enabling the first and second abutment portions to press the power module onto the carrier. Three fixing points (two abutment points and one connecting point) are achieved using a single connection point (connector and mounting hole connection). This reduces the number of openings on the carrier, helping to improve the space utilization of the carrier.

Description

Technical Field

[0001] This application relates to the field of fixed structure technology, and more particularly to a fastener, energy storage device, and photovoltaic device. Background Technology

[0002] In related technologies, power modules are often mounted on heat sinks using a four-point mounting method. This involves connecting the power module to the heat sink via mounting holes located at each of the four corners, and then mounting it onto the PCB board. This mounting method requires pre-drilling holes on the PCB board equal to the number of mounting holes, resulting in a large number of openings on the PCB board. This reduces the area of ​​the PCB board available for mounting other components or for wiring, leading to low PCB board space utilization. Utility Model Content

[0003] This application provides a fixture, an energy storage device, and a photovoltaic device to improve the space utilization of the carrier, thereby at least partially solving the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a fastener is provided for connecting a power module to a carrier, the carrier having mounting holes, and the fastener comprising:

[0005] The first and second abutting parts are configured to abut against the power module;

[0006] The connecting part is located between the first abutting part and the second abutting part, and is connected to both the first abutting part and the second abutting part respectively. The connecting part is configured to connect to the carrier through a connector provided in the mounting hole.

[0007] In some embodiments, the connector is configured to arch relative to the carrier.

[0008] In some embodiments, the first abutting portion and the second abutting portion are symmetrically arranged with respect to the connecting portion.

[0009] In some embodiments, the fastener further includes:

[0010] A first connecting structure is connected between the connecting portion and the first abutting portion and is configured to transmit the force on the connecting portion to the first abutting portion;

[0011] The second connecting structure is connected between the connecting part and the second abutting part and is configured to transmit the force on the connecting part to the second abutting part.

[0012] In some embodiments, the first abutting portion is bent relative to the first connecting structure; and / or,

[0013] The second abutment portion is bent relative to the second connecting structure.

[0014] In some embodiments, the bending radius between the first connecting structure and the first abutting portion is 1mm to 3mm; and / or,

[0015] The bending radius between the second connecting structure and the second abutment is 1mm to 3mm.

[0016] In some embodiments, the power module has a connection surface, and mounting holes are formed on the connection surface. Along the length of the fastener, the projection of the first abutment portion onto the connection surface lies within the projection of the first connecting structure onto the connection surface; and / or,

[0017] Along the length of the fastener, the projection of the second abutment portion onto the connecting surface lies within the projection of the second connecting structure onto the connecting surface.

[0018] In some embodiments, the plane containing the connection portion is configured to be parallel to the connection surface.

[0019] In some embodiments, the plane containing the first abutment portion and / or the second abutment portion is configured to be parallel to the connecting surface.

[0020] In some embodiments, the plane containing the first connecting structure and / or the second connecting structure is configured to be at an angle to the connecting surface.

[0021] In some embodiments, the angle between the plane containing the first connecting structure and the connecting surface is the same as the angle between the plane containing the second connecting structure and the connecting surface.

[0022] In some embodiments, the angle between the plane containing the first connecting structure and / or the second connecting structure and the connecting surface is 5° to 10°.

[0023] In some embodiments, the first connection structure includes a first connection segment and a second connection segment connected to each other, the first connection segment being further connected to a first abutting portion, and the second connection segment being further connected to a connection portion;

[0024] The second connection structure includes a third connection segment and a fourth connection segment connected to each other. The third connection segment is also connected to the second abutment portion, and the fourth connection segment is also connected to the connection portion.

[0025] In some embodiments, the plane containing the first connecting segment and / or the third connecting segment is configured to be parallel to the connecting surface.

[0026] In some embodiments, the plane containing the second connecting segment and / or the fourth connecting segment is configured to be at an angle to the connecting surface.

[0027] In some embodiments, the included angle between the first connecting segment and the second connecting segment is 165° to 175°; and / or,

[0028] The angle between the third connecting segment and the fourth connecting segment is 165° to 175°.

[0029] In some embodiments, the connecting portion arches relative to the first abutment portion and the second abutment portion.

[0030] In some embodiments, along the length of the fastener, the projection of the first abutting portion onto the connecting surface lies within the projection of the first connecting segment onto the connecting surface; and / or,

[0031] The projection of the second abutment part on the connecting surface is located within the projection of the third connecting segment on the connecting surface.

[0032] In some embodiments, positioning holes are also provided on the connecting surface, and the fastener further includes:

[0033] The positioning structure is provided on the surfaces of the first abutting part and the second abutting part that abut against the power module, and is connected to the positioning hole to determine the position of the fixing member.

[0034] In some embodiments, the positioning structure is cylindrical, and the diameter of the positioning structure is 10mm to 12mm.

[0035] In some embodiments, the distance between the connecting portion and the connecting surface is less than the distance between the first connecting segment and / or the second connecting segment and the connecting surface.

[0036] In some embodiments, the distance between the connecting part and the connecting surface is greater than or equal to 0.2 mm.

[0037] According to a second aspect of this application, an energy storage device is provided, including the fixture described above.

[0038] According to a third aspect of this application, a photovoltaic device is provided, including the fixture described above.

[0039] In the fastener of this embodiment, the connecting portion of the fastener is connected to the carrier via a connector. Simultaneously, the first and second abutting portions of the fastener abut against the power module, and these portions are located on opposite sides of the connecting portion. This disperses the force applied to the connecting portion by the connector to the first and second abutting portions, causing them to apply pressure to the power module and press it onto the carrier. Thus, by opening only one mounting hole on the carrier, the power modules on both sides of the mounting hole (along the length of the fastener) can be pressed onto the carrier. Three fixing points (two abutting points and one connecting point) are achieved using a single connection point (connector and mounting hole). Compared to multi-point connection methods in related technologies, the fastener provided in this application reduces the number of openings on the carrier, increasing the usable area of ​​the carrier and allowing for more layout options, thereby improving the space utilization of the carrier.

[0040] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0043] Figure 1 This is a schematic diagram of a fastener usage scenario provided in an embodiment of this application, in which the power module and the carrier are shown;

[0044] Figure 2 yes Figure 1 A side view of the provided fastener in a usage scenario, showing the power module and the carrier;

[0045] Figure 3 yes Figure 1 A three-dimensional structural diagram of the provided fastener is shown, in which the fastening structure is illustrated;

[0046] Figure 4 yes Figure 1 Front view of the provided fastener;

[0047] Figure 5 yes Figure 1 Top view of the provided fastener;

[0048] Figure 6 This is a three-dimensional structural schematic diagram of another fastener provided in an embodiment of this application;

[0049] Figure 7 yes Figure 6 Front view of the provided fastener;

[0050] Figure 8 yes Figure 6 Top view of the provided fastener;

[0051] Figure 9 A three-dimensional structural diagram of another type of fastener provided in this application embodiment;

[0052] Figure 10 yes Figure 9 Front view of the provided fastener;

[0053] Figure 11yes Figure 9 Top view of the provided fastener.

[0054] Explanation of reference numerals in the attached figures:

[0055] 10. Fastener; 11. First abutting part; 12. Second abutting part; 13. Connecting part; 14. First connecting structure; 141. First connecting segment; 142. Second connecting segment; 15. Second connecting structure; 151. Third connecting segment; 152. Fourth connecting segment; 16. Positioning structure;

[0056] 20. Power module; 21. Connection surface;

[0057] 30. Carrier;

[0058] 40. Connecting parts. Detailed Implementation

[0059] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0060] According to a first aspect of this application, a fastener 10 is provided; see [link to relevant documentation]. Figures 1 to 5 , Figure 1 This is a schematic diagram of a fastener usage scenario provided in an embodiment of this application, in which the power module and the carrier are shown. Figure 2 yes Figure 1 The provided fastener is shown in a side view depicting a usage scenario, where the power module and carrier are illustrated. Figure 3 yes Figure 1 A three-dimensional structural diagram of the provided fastener is shown, in which the fastening structure is illustrated. Figure 4 yes Figure 1 The provided front view of the fastener. Figure 5 yes Figure 1 A top view of the provided fastener. The fastener 10 is used to connect the power module 20 to the carrier 30, which has a mounting hole (not shown in the figure). The fastener 10 includes: a first abutting part 11 and a second abutting part 12, configured to abut against the power module 20; and a connecting part 13, located between the first abutting part 11 and the second abutting part 12, and connected to both the first abutting part 11 and the second abutting part 12 respectively. The connecting part 13 is configured to connect to the carrier 30 through a connector 40 passing through the mounting hole.

[0061] In this embodiment, the connecting portion 13 of the fixing member 10 is connected to the carrier 30 via the connecting member 40. Simultaneously, the first abutting portion 11 and the second abutting portion 12 of the fixing member 10 abut against the power module 20, and the first abutting portion 11 and the second abutting portion 12 are located on both sides of the connecting portion 13. This disperses the force applied by the connecting member 40 to the connecting portion 13 to the first abutting portion 11 and the second abutting portion 12, causing the first abutting portion 11 and the second abutting portion 12 to apply pressure to the power module 20, thus pressing the power module 20 onto the carrier 30. In this way, by opening only one mounting hole on the carrier 30, the power modules 20 on both sides of the mounting hole (along the length direction of the fixing member 10) can be pressed onto the carrier 30. Three fixing points (two abutting points and one connecting point) are achieved using only one connection point (connecting member 40 and mounting hole). Compared to the multi-point connection method in related technologies, the fastener 10 provided in this application can reduce the number of openings on the carrier 30, thereby increasing the usable area of ​​the carrier 30 and improving the space utilization of the carrier 30. For example, when the carrier 30 is a PCB board, more area of ​​the PCB board can be used for wiring or placing electronic components, allowing more electronic components or lines to be placed on the same PCB board, thus improving the space utilization of the PCB board.

[0062] In some embodiments of this application, the fastener 10 is a metal part, such as stainless steel or iron alloy.

[0063] Please see Figures 3 to 8 , Figure 6 This is a three-dimensional structural diagram of another fastener provided in an embodiment of this application. Figure 7 yes Figure 6 The provided front view of the fastener. Figure 8 yes Figure 6 A top view of the provided fastener. In some embodiments of this application, the connection portion 13 is configured to arch relative to the carrier 30.

[0064] In this embodiment, the force applied by the connector 40 to the connecting portion 13 is transmitted to the first abutting portion 11 and the second abutting portion 12, causing the first abutting portion 11 and the second abutting portion 12 to apply pressure to the power module 20, ultimately pressing the power module 20 onto the carrier 30. This causes the connecting portion 13 to arch relative to the carrier 30, preventing the force applied by the connector 40 to the connecting portion 13 from being directly transmitted to the power module 20. This ensures that more force is transmitted to the first abutting portion 11 and the second abutting portion 12, which helps to improve the connection stability between the power module 20 and the carrier 30.

[0065] Please continue reading. Figures 3 to 8In some embodiments of this application, the first abutment portion 11 and the second abutment portion 12 are symmetrically arranged about the connecting portion 13. This ensures that the forces transmitted to the first abutment portion 11 and the second abutment portion 12 are substantially the same, resulting in substantially the same pressure on the power module 20 on both sides of the mounting hole (along the length direction of the fixing member 10) (i.e., substantially the same connection strength with the carrier 30). This reduces the probability of the power module 20 partially separating from the carrier 30 due to uneven force, and improves the connection stability between the power module 20 and the carrier 30.

[0066] Please continue reading. Figures 3 to 8 In some embodiments of this application, the fastener 10 further includes: a first connecting structure 14 connected between the connecting portion 13 and the first abutting portion 11, configured to transmit the force received by the connecting portion 13 to the first abutting portion 11; and a second connecting structure 15 connected between the connecting portion 13 and the second abutting portion 12, configured to transmit the force received by the connecting portion 13 to the second abutting portion 12.

[0067] In some embodiments of this application, the projections of the first connecting structure 14 and / or the second connecting structure 15 onto the connecting surface 21 are trapezoidal or rectangular. The upper base of the trapezoid is connected to the connecting portion 13, and the lower base of the trapezoid is connected to the first abutting portion 11 (second abutting portion 12). An isosceles trapezoid is preferred.

[0068] Please continue reading. Figures 3 to 8 In some embodiments of this application, the first abutment portion 11 is bent relative to the first connecting structure 14. In this way, the first connecting structure 14 and the first abutment portion 11 can be used to provide a buffer for the transmission of force (force along the axial direction of the first mounting hole).

[0069] Please continue reading. Figures 3 to 8 In some embodiments of this application, the second abutment portion 12 is bent relative to the second connecting structure 15. This achieves a similar or identical technical effect to the embodiment described above where the first connecting structure 14 is bent toward the power module 20 to obtain the first abutment portion 11.

[0070] In some embodiments of this application, a first opening is provided at the bend between the first connecting structure 14 and the first abutting portion 11, and the first opening is located on both sides of the bend point; and / or, a second opening is provided at the bend between the second connecting structure 15 and the second abutting portion 12, and the second opening is located on both sides of the bend point.

[0071] In some embodiments of this application, the bending radius between the first connecting structure 14 and the first abutting portion 11 is 1mm to 3mm.

[0072] The bending radius between the first connecting structure 14 and the first abutment portion 11 can be determined according to actual needs, for example, based on the thickness of the power module 20, to ensure that the upper surface of the connector 40 does not exceed the upper surface of the power module 20 after the fastener 10 is installed, thus avoiding interference between the connector 40 and the power module 20. In this embodiment, the bending radius between the first connecting structure 14 and the first abutment portion 11 is 1mm to 3mm. Within this range, the bending radius can be used to provide a buffer for transmission, while also ensuring that the force applied by the first abutment portion 11 to the power module 20 is sufficient to press the power module 20 onto the carrier 30, ensuring the connection stability between the power module 20 and the carrier 30.

[0073] In some embodiments of this application, the bending radius between the second connecting structure 15 and the second abutting portion 12 is 1mm to 3mm. This is similar to or the same as the embodiment described above where the bending radius between the first connecting structure 14 and the first abutting portion 11 is 1mm to 3mm, and will not be repeated here.

[0074] Please continue reading. Figures 3 to 8 In some embodiments of this application, the power module 20 has a connecting surface 21, and mounting holes are formed on the connecting surface 21. In the length direction of the fastener 10, the projection of the first abutting part 11 in the connecting surface 21 is located within the projection of the first connecting structure 14 in the connecting surface 21.

[0075] Compared to the arrangement of the first abutment 11, the first connecting structure 14, and the connecting part 13 along the length of the fastener 10, this application places the first abutment 11 between the first connecting structure 14 and the power module 20. This helps to reduce the loss of force transmitted from the connecting part 13 to the first abutment 11 during the transmission process, allowing more force to be transmitted to the first abutment 11, i.e., more force to be applied to the power module 20. Therefore, it can improve the connection stability between the power module 20 and the carrier 30.

[0076] Please continue reading. Figures 3 to 8 In some embodiments of this application, the projection of the second abutment portion 12 in the connecting surface 21 is located within the projection of the second connecting structure 15 in the connecting surface 21 along the length of the fastener 10. This is similar to or the same as the embodiment described above where the projection of the first abutment portion 11 in the connecting surface 21 is located within the projection of the first connecting structure 14 in the connecting surface 21, and will not be repeated here.

[0077] Please continue reading. Figures 3 to 8 In some embodiments of this application, the plane where the connecting portion 13 is located is configured to be parallel to the connecting surface 21.

[0078] This approach helps to evenly transmit the force on the connecting part 13 to the first abutting part 11 and the second abutting part 12, making the connection strength between the first abutting part 11 and the second abutting part 12 and the power module 20 basically the same, thereby helping to improve the connection stability between the power module 20 and the carrier 30.

[0079] Please continue reading. Figures 3 to 8 In some embodiments of this application, the planes where the first abutment portion 11 and / or the second abutment portion 12 are located are configured to be parallel to the connecting surface 21.

[0080] This design facilitates the even distribution of the forces on the first contact part 11 and the second contact part 12 to the power module 20 and the part connected to it, ensuring that the forces on the power module 20 and the fixing member 10 are basically the same at all points, thus avoiding damage to the power module 20 due to excessive force at a certain point.

[0081] Please continue reading. Figures 3 to 8 In some embodiments of this application, the plane containing the first connecting structure 14 and / or the second connecting structure 15 is configured to form an angle with the connecting surface 21. Thus, the connecting portion 13 is located in a different plane from the first abutting portion 11 and the second abutting portion 12, which helps to transmit more force to the first abutting portion 11 and the second abutting portion 12, thereby improving the connection strength between the power module 20 and the carrier 30.

[0082] Please continue reading. Figures 3 to 8 In some embodiments of this application, the angle between the plane where the first connecting structure 14 is located and the connecting surface 21 is the same as the angle between the plane where the second connecting structure 15 is located and the connecting surface 21.

[0083] By adopting this scheme, the force transmitted to the first abutment 11 and the second abutment 12 can be basically the same, avoiding uneven force distribution at various points where the power module 20 is connected to the fixing member 10. On the one hand, this can improve the connection and drive between the power module 20 and the carrier 30, and on the other hand, it can also avoid damage to the power module 20 due to excessive force applied to it.

[0084] In some embodiments of this application, the angle between the plane containing the first connecting structure 14 and / or the second connecting structure 15 and the connecting surface 21 is 5° to 10°.

[0085] The angle between the plane containing the first connecting structure 14 and / or the second connecting structure 15 and the connecting surface 21 is related to various factors, such as the distance between the connecting part 13 and the connecting surface 21, the distance between the first abutting part 11 and the second abutting part 12, etc. Therefore, the selection of the angle needs to be considered comprehensively. On the one hand, it is necessary to avoid the distance between the connecting part 13 and the connecting surface 21 being too large, which would cause the upper surface of the connector 40 to be higher than the upper surface of the power module 20, affecting the normal use of the power module 20. On the other hand, it is also necessary to avoid the fixing part 10 being too long, that is, to avoid the two ends of the fixing part 10 protruding beyond the power module 20. In the embodiment of this application, the angle between the plane containing the first connecting structure 14 and / or the second connecting structure 15 and the connecting surface 21 is 5° to 10°. When the angle is within this range, it can be ensured that the power module 20 can work normally, which helps to improve the reliability of the fixing part 10 provided in this application.

[0086] Please see Figures 3 to 5 In some embodiments of this application, the first connecting structure 14 includes a first connecting segment 141 and a second connecting segment 142 connected to each other. The first connecting segment 141 is also connected to the first abutting portion 11, and the second connecting segment 142 is also connected to the connecting portion 13. The second connecting structure 15 includes a third connecting segment 151 and a fourth connecting segment 152 connected to each other. The third connecting segment 151 is also connected to the second abutting portion 12, and the fourth connecting segment 152 is also connected to the connecting portion 13.

[0087] This design allows the first connecting structure 14 to have multiple forms. By controlling the connection between the first connecting segment 141 and the second connecting segment 142, the force applied to the first abutment 11 can be varied, and the shape of the fastener 10 can also be varied. This facilitates selecting the connection between the first connecting segment 141 and the second connecting segment 142 according to actual conditions, making the fastener 10 provided in this application applicable to more scenarios and helping to expand its scope of application. The technical effects of the second connecting structure 15 having the third connecting segment 151 and the fourth connecting segment 152 are similar to or the same as those of the first connecting structure 14 having the first connecting segment 141 and the second connecting segment 142, and will not be described in detail here.

[0088] Please continue reading. Figures 3 to 5 In some embodiments of this application, the planes containing the first connecting segment 141 and / or the third connecting segment 151 are configured to be parallel to the connecting surface 21.

[0089] The first connecting segment 141 and the third connecting segment 151 are respectively connected to the first abutting part 11 and the second abutting part 12. The planes where the first abutting part 11 and the second abutting part 12 are located are parallel to the connecting surface 21. Therefore, this application arranges the planes where the first connecting segment 141 and / or the third connecting segment 151 are located parallel to the connecting surface 21, so that when the force transmitted to the first connecting segment 141 and the third connecting segment 151 is transmitted to the first abutting part 11 and the second abutting part 12, the component of the force along the connecting surface 21 is zero. This allows as much of the force transmitted to the first connecting segment 141 and the third connecting segment 151 as possible to be transmitted to the first abutting part 11 and the second abutting part 12, thereby improving the connection stability between the power module 20 and the carrier 30.

[0090] Please continue reading. Figures 3 to 5 In some embodiments of this application, the plane containing the second connecting segment 142 and / or the fourth connecting segment 152 is configured to form an angle with the connecting surface 21. This causes the force transmitted to the second connecting segment 142 and the fourth connecting segment 152 to have a component along the axial direction of the first mounting hole, thereby enabling the first abutment portion 11 and the second abutment portion 12 to apply pressure to the power module 20, pressing the power module 20 onto the carrier 30, which helps improve the connection stability of the power module 20 and its state.

[0091] In some embodiments of this application, the included angle between the first connecting segment 141 and the second connecting segment 142 is 165° to 175°. This is similar to or the same as the embodiments described above where the included angle between the plane containing the first connecting structure 14 and / or the second connecting structure 15 and the connecting surface 21 is 5° to 10°, and will not be repeated here.

[0092] In some embodiments of this application, the included angle between the third connecting segment 151 and the fourth connecting segment 152 is 165° to 175°. This is similar to or the same as the embodiments where the included angle between the plane containing the first connecting structure 14 and / or the second connecting structure 15 and the connecting surface 21 is 5° to 10°, and will not be described again here.

[0093] Please continue reading. Figures 3 to 5 In some embodiments of this application, the connecting portion 13 is arched relative to the first abutting portion 11 and the second abutting portion 12.

[0094] Please continue reading. Figures 3 to 5 In some embodiments of this application, in the length direction of the fastener 10, the projection of the first abutting portion 11 in the connecting surface 21 is located within the projection of the first connecting segment 141 in the connecting surface 21.

[0095] After being subjected to force, the first connecting segment 141 will move closer to the connecting surface 21. Based on this, in this embodiment, the projection of the first abutting part 11 in the connecting surface 21 along the length of the fastener 10 is located within the projection of the first connecting segment 141 in the connecting surface 21. This avoids the first abutting part 11 from contacting the first connecting segment 141 when it moves closer to the connecting surface 21, thus preventing the transmission of influence. Therefore, it helps to improve the connection stability of the power module 20 and the state.

[0096] Please continue reading. Figures 3 to 5 In some embodiments of this application, the projection of the second abutment portion 12 on the connecting surface 21 is located within the projection of the third connecting segment 151 on the connecting surface 21. This is similar to or the same as the embodiment described above where the projection of the first abutment portion 11 on the connecting surface 21 is located within the projection of the first connecting segment 141 on the connecting surface 21, and will not be repeated here.

[0097] Please continue reading. Figures 3 to 5 In some embodiments of this application, a positioning hole (not shown in the figure) is also provided on the connecting surface 21. The fixing member 10 further includes a positioning structure 16, which is disposed on the surface of the first abutting part 11 and the second abutting part 12 that abut against the power module 20, and is connected to the positioning hole to determine the position of the fixing member 10.

[0098] By adopting this scheme, the position of the fixing member 10 can be determined using the positioning structure 16, thereby improving the installation accuracy of the fixing member 10 and thus improving the connection stability of the power module 20 and the state. At the same time, the positioning hole is opened on the connection surface 21, and no corresponding hole is opened on the carrier 30. Therefore, while improving the connection stability, the space utilization of the carrier 30 can also be guaranteed.

[0099] In some embodiments of this application, the positioning structure 16 is cylindrical, and the diameter of the positioning structure 16 is 10mm to 12mm.

[0100] The shape and size of the positioning structure 16 are related to the dimensions (e.g., area and depth) of the portion of the power module 20 used for connection with the fastener 10, and also to the projected areas of the first connecting segment 141 and the third connecting segment 151 within the connecting surface 21. In this embodiment, the positioning structure 16 is preferably cylindrical, and its projection within the connecting surface 21 is located within the projection of the first connecting segment 141 (and the third connecting segment 151) within the connecting surface 21, preferably 10mm to 12mm.

[0101] Please see Figures 9 to 11 , Figure 9 A three-dimensional structural diagram of another type of fastener provided in this application embodiment is shown. Figure 10 yes Figure 9 The provided front view of the fastener. Figure 11yes Figure 9 A top view of the provided fastener. In some embodiments of this application, the distance between the connecting portion 13 and the connecting surface 21 is less than the distance between the first connecting segment 141 and / or the second connecting segment 142 and the connecting surface 21. Thus, the fastener 10 has an overall inverted arch shape, allowing it to contact the connecting surface 21 after installation, more effectively transmitting the force on the connecting portion 13, and requiring lower elasticity and hardness from the fastener 10.

[0102] In some embodiments of this application, the distance between the connecting portion 13 and the connecting surface 21 is greater than or equal to 0.2 mm.

[0103] According to a second aspect of this application, an energy storage device is provided, including the fastener 10 as described above. This energy storage device possesses all the beneficial effects of the fastener 10, which will not be elaborated further herein.

[0104] According to a third aspect of this application, a photovoltaic device is provided, including the fastener 10 as described above. This photovoltaic device possesses all the beneficial effects of the fastener 10, which will not be elaborated further herein.

[0105] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0106] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0107] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0108] The above embodiments are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A fastener (10) for connecting a power module (20) to a carrier (30), the carrier (30) having mounting holes, characterized in that, The fastener (10) includes: The first contact portion (11) and the second contact portion (12) are configured to contact the power module (20); A connecting part (13) is located between the first abutting part (11) and the second abutting part (12), and is connected to the first abutting part (11) and the second abutting part (12) respectively. The connecting part (13) is configured to be connected to the carrier (30) through a connector (40) passing through the mounting hole.

2. The fastener (10) according to claim 1, characterized in that, The connecting portion (13) is configured to arch relative to the carrier (30).

3. The fastener (10) according to claim 1 or 2, characterized in that, The first abutting part (11) and the second abutting part (12) are symmetrically arranged with respect to the connecting part (13).

4. The fastener (10) according to claim 1, characterized in that, The fastener (10) also includes: A first connecting structure (14) is connected between the connecting part (13) and the first abutting part (11) and is configured to transmit the force on the connecting part (13) to the first abutting part (11); The second connecting structure (15) is connected between the connecting part (13) and the second abutting part (12) and is configured to transmit the force on the connecting part (13) to the second abutting part (12).

5. The fastener (10) according to claim 4, characterized in that, The first abutment portion (11) is bent relative to the first connecting structure (14); and / or, The second abutting part (12) is bent relative to the second connecting structure (15).

6. The fastener (10) according to claim 5, characterized in that, The bending radius between the first connecting structure (14) and the first abutting part (11) is 1mm to 3mm; and / or, The bending radius between the second connecting structure (15) and the second abutting part (12) is 1mm to 3mm.

7. The fastener (10) according to claim 5, characterized in that, The power module (20) has a connecting surface (21), and the mounting hole is formed on the connecting surface (21). In the length direction of the fastener (10), the projection of the first abutment portion (11) in the connecting surface (21) is located within the projection of the first connecting structure (14) in the connecting surface (21); and / or, In the length direction of the fastener (10), the projection of the second abutment portion (12) in the connecting surface (21) is located within the projection of the second connecting structure (15) in the connecting surface (21).

8. The fastener (10) according to claim 7, characterized in that, The plane containing the connecting part (13) is configured to be parallel to the connecting surface (21).

9. The fastener (10) according to claim 8, characterized in that, The plane containing the first abutment portion (11) and / or the second abutment portion (12) is configured to be parallel to the connecting surface (21).

10. The fastener (10) according to claim 8, characterized in that, The plane containing the first connecting structure (14) and / or the second connecting structure (15) is configured to be at an angle to the connecting surface (21).

11. The fastener (10) according to claim 10, characterized in that, The angle between the plane where the first connecting structure (14) is located and the connecting surface (21) is the same as the angle between the plane where the second connecting structure (15) is located and the connecting surface (21).

12. The fastener (10) according to claim 10 or 11, characterized in that, The angle between the plane containing the first connecting structure (14) and / or the second connecting structure (15) and the connecting surface (21) is 5° to 10°.

13. The fastener (10) according to any one of claims 7 to 9, characterized in that, The first connection structure (14) includes a first connection segment (141) and a second connection segment (142) connected to each other. The first connection segment (141) is also connected to the first abutting part (11), and the second connection segment (142) is also connected to the connection part (13). The second connection structure (15) includes a third connection segment (151) and a fourth connection segment (152) connected to each other. The third connection segment (151) is also connected to the second abutment part (12), and the fourth connection segment (152) is also connected to the connection part (13).

14. The fastener (10) according to claim 13, characterized in that, The plane containing the first connecting segment (141) and / or the third connecting segment (151) is configured to be parallel to the connecting surface (21).

15. The fastener (10) according to claim 13, characterized in that, The plane containing the second connecting segment (142) and / or the fourth connecting segment (152) is configured to be at an angle to the connecting surface (21).

16. The fastener (10) according to claim 15, characterized in that, The angle between the first connecting segment (141) and the second connecting segment (142) is 165° to 175°; and / or, The angle between the third connecting segment (151) and the fourth connecting segment (152) is 165° to 175°.

17. The fastener (10) according to any one of claims 14 to 16, characterized in that, The connecting portion (13) arches relative to the first abutting portion (11) and the second abutting portion (12).

18. The fastener (10) according to any one of claims 14 to 16, characterized in that, Along the length of the fastener (10), the projection of the first abutting portion (11) onto the connecting surface (21) lies within the projection of the first connecting segment (141) onto the connecting surface (21); and / or, The projection of the second abutting part (12) in the connecting surface (21) is located within the projection of the third connecting segment (151) in the connecting surface (21).

19. The fastener (10) according to claim 17, characterized in that, The connecting surface (21) is also provided with a positioning hole, and the fastener (10) further includes: A positioning structure (16) is provided on the surfaces of the first abutting part (11) and the second abutting part (12) that abut against the power module (20), and is connected to the positioning hole to determine the position of the fixing member (10).

20. The fastener (10) according to claim 19, characterized in that, The positioning structure (16) is cylindrical, and the diameter of the positioning structure (16) is 10mm to 12mm.

21. The fastener (10) according to claim 13, characterized in that, The distance between the connecting part (13) and the connecting surface (21) is less than the distance between the first connecting segment (141) and / or the second connecting segment (142) and the connecting surface (21).

22. The fastener (10) according to claim 21, characterized in that, The distance between the connecting part (13) and the connecting surface (21) is greater than or equal to 0.2 mm.

23. An energy storage device, characterized in that, Includes the fastener (10) as described in any one of claims 1 to 22.

24. A photovoltaic device, characterized in that, Includes the fastener (10) as described in any one of claims 1 to 22.

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