A BC battery packaging frame

Abstract

This application discloses a BC battery packaging frame, including a frame layer and a sealing layer. The top of the frame layer has a locking groove that mates with the BC battery. The sealing layer is fitted into the locking groove. A flow-guiding structure is provided at the outer edge of the sealing layer and the locking groove where they fit together. This flow-guiding structure is adapted to prevent water accumulation in the edge area at the top of the BC battery. The flow-guiding structure prevents water accumulation in the edge area at the top of the BC battery, allowing water to flow in a directional manner. This prevents water from accumulating in the edge area and thus preventing long-term accumulation and seepage. The heat dissipation channel helps connect the bottom space of the BC battery with the external environment, facilitating heat dissipation.

Description

Technical Field

[0001] This application relates to the field of photovoltaic equipment technology, and in particular to a BC cell packaging frame. Background Technology

[0002] Solar cells are the core component of photovoltaic (PV) modules, but their materials are relatively fragile and susceptible to corrosion and damage from the external environment, such as chemical corrosion, mechanical impact, and climate change. Encapsulation can effectively protect solar cells and extend their lifespan. Encapsulation of PV modules is a crucial step in ensuring their efficient and stable operation. Through appropriate encapsulation technologies and material selection, solar cells can be protected from external environmental corrosion and damage, improving the conversion efficiency and overall performance of the PV module. The frame is a key component used to fix and seal the solar cell module, enhance its strength, and facilitate transportation and installation. Frames are typically made of lightweight materials such as aluminum, and their surfaces undergo anti-oxidation treatment to improve their weather resistance.

[0003] Currently, when the frame and photovoltaic cell are combined, the sealing performance at the joint is generally poor, and water tends to accumulate at the step formed at the joint, which can lead to seepage and other phenomena. This can cause water seepage at the edges, resulting in insulation or corrosion problems. On the other hand, due to the dense metallization layer on the back of the battery, the heat dissipation efficiency of traditional packaging frames is poor, which can easily lead to power decay at high temperatures. Utility Model Content

[0004] The purpose of this application is to provide a BC battery packaging frame with better heat dissipation capability.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a BC battery packaging frame, including a frame layer and a sealing layer, wherein a snap-fit ​​groove is formed on the top of the frame layer to cooperate with the BC battery, the sealing layer is fitted in the snap-fit ​​groove, and a flow guiding structure is provided at the outer edge of the sealing layer and the snap-fit ​​groove, the flow guiding structure being adapted to prevent water from accumulating in the edge area at the top of the BC battery.

[0006] As a preferred embodiment, the fastening groove includes an upper lip and a lower lip, the length of the upper lip is shorter than that of the lower lip, and the top of the upper lip forms a slope with the height gradually increasing from the inside to the outside. The upper lip is provided with a water-guiding notch at the top of its outermost side, the water-guiding notch being adapted to drain water that is above a set height at the top of the BC battery. The slope and the water-guiding notch form the flow guiding structure.

[0007] As a preferred embodiment, a plurality of drainage grooves are provided at intervals at the top edge of the upper lip. The drainage grooves are formed by cutting from the top of the upper lip. The maximum water accumulation height inside the upper lip is the highest point of the notch formed by the drainage groove on the top slope of the upper lip.

[0008] As a preferred embodiment, the top outer side of the upper lip is cut to form an annular drainage chamfer, and the cross-section of the upper lip is formed by connecting the drainage chamfer and the inclined surface at the top of the upper lip to form an inverted "V" shaped arch.

[0009] As a preferred embodiment, a support cavity is formed at the bottom of the frame layer, and a water guide hole is formed at the bottom of the support cavity, which is inclined outward.

[0010] As a preferred embodiment, the BC battery packaging frame further includes heat dissipation channels disposed on both sides of the support cavity. The heat dissipation channels are arranged inclined downwards from the inside out, and the heat dissipation channels sequentially connect the external environment, the inner cavity of the support cavity, and the space between the bottom of the BC battery.

[0011] As a preferred embodiment, the top of the sealing layer extends beyond the top inner side of the upper lip, and the top of the extended portion forms a downward-facing arched protrusion; after installation, the inner edge of the upper lip is adapted to abut against the arched protrusion.

[0012] As a preferred embodiment, the fastening groove has two corners at the upper and lower outer edges of the BC battery. The angle of the fastening groove at the two corners is an acute angle. The sealing layer is thickened at the two corners so that the inner side of the sealing layer after installation forms a fitting groove that fits the outer edge of the BC battery.

[0013] As a preferred embodiment, the sealing layer and the fastening groove are fixed by a bonding and snap-fit ​​connection.

[0014] As a preferred embodiment, the frame layer is a separate structure, while the sealing layer is an integral structure. The separate frame layer is installed after the sealing layer and the BC battery are fitted together.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: The designed flow-guiding structure is designed to prevent water from accumulating at the edge of the top of the BC battery, allowing water to flow in a directional manner. This flow-guiding prevents water from accumulating at the edge and thus prevents water from seeping in over a long period of time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application.

[0017] Figure 2 yes Figure 1 A diagram from another perspective.

[0018] Figure 3 This is a schematic diagram showing the assembly of the frame layer, sealing layer, and BC battery.

[0019] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0020] Figure 5 This is a schematic diagram of the upper lip after the drainage channel has been installed.

[0021] Figure 6 This is a schematic diagram of the upper lip after the drainage chamfer has been installed.

[0022] Figure 7 This is a diagram showing the fit of each component when the two corners of the interlocking groove are set to acute angles.

[0023] In the diagram: 1. Frame layer; 2. BC battery; 3. Support cavity; 4. Bevel; 5. Lower lip; 6. Sealing layer; 7. Upper lip; 8. Drainage groove; 9. Drainage chamfer; 10. Water guide hole; 11. Heat dissipation channel. Detailed Implementation

[0024] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0026] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0027] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0028] The corrosion or insulation problems currently existing in BC batteries are due to two main reasons. Firstly, the sealing performance of the frame is generally poor, allowing water to seep into the gap between the frame and the battery, resulting in corrosion and subsequent damage to the battery structure and short circuits. Secondly, because the current packaging frame is smoothly set on the side in contact with the back of the battery after it is attached to the battery, while the battery has a certain angle after installation, when there is water flowing at the bottom of the battery frame, the water at the higher position may tilt and move towards the back of the battery, thus reducing the safety of the circuit on the back of the battery.

[0029] Reference Figures 1 to 7 This application proposes a BC battery encapsulation frame, mainly addressing the problem of poor insulation and sealing performance of the BC battery 2 due to its frame. It mainly includes a frame layer 1 and a sealing layer 6. The top of the frame layer 1 has a locking groove that mates with the BC battery 2. The sealing layer 6 is fitted into the locking groove. A flow-guiding structure is provided at the outer edge of the sealing layer 6 and the locking groove where they fit together. This flow-guiding structure is suitable for preventing water accumulation in the edge area at the top of the BC battery 2. The flow-guiding structure is a structure that enables directional flow of water / fluid, preventing water accumulation in the edge area and thus preventing long-term accumulation and penetration.

[0030] The encapsulation frame mainly includes a frame layer 1 and a sealing layer 6. The frame layer 1 is used to fit the outer wall of the BC battery 2. The frame provides physical protection for the internal components of the BC battery 2 through mechanical support and the design of the sealing layer 6, preventing external impacts and the erosion of wind, rain, dust and other elements.

[0031] The BC battery 2 and the frame can be fixed in the following ways:

[0032] (1) The frame layer 1 adopts an integrated design. At this time, the sealing layer 6 can be installed on the innermost side of the snap-fit ​​groove first. The sealing layer 6 is preferably a waterproof pad made of rubber. After the waterproof pad is directly inserted into the snap-fit ​​groove, it can be bonded to ensure stability. Then, the BC battery 2 is installed by snapping into the inner groove formed by the sealing layer 6. During the installation process, the sealing layer 6 deforms elastically to ensure the smooth installation of the BC battery 2 and increase the sealing performance at the joint.

[0033] (2) The frame layer 1 adopts a split design, and the sealing layer 6 is still preferably a waterproof pad. The waterproof pad is an integrated design. First, the waterproof pad is placed on the outside of the BC battery 2, and then the split frame layer 1 is installed and fixed in sequence. Before installing the frame layer 1, glue can also be applied to the outside of the waterproof pad to increase the stability after the frame layer 1 is installed.

[0034] The sealing layer 6 and the fastening groove can be fixed by one or both of the following connection methods: bonding and snap-fit. The first method described above exerts a greater force on the BC battery 2 during installation, so the second method is preferred.

[0035] To this end, this application reduces the possibility of liquid directly tilting and flowing to the lower back of the battery by increasing the contact sealing performance between the frame layer 1 and the BC battery 2, and by improving the contact form between the frame and the back of the BC battery 2.

[0036] To ensure that the frame can provide space and necessary support for the back of the BC battery 2 after installation, a support cavity 3 is formed at the bottom of the edge layer. The cross-section of the frame layer 1 is as follows: Figure 1 and Figure 3 As shown, the frame is preferably made in one piece, but it can also be designed as a separate piece by welding, screwing, or other methods.

[0037] A specific embodiment of the fastening groove is proposed. The fastening groove includes an upper lip 7 and a lower lip 5. The upper lip 7 is used to wrap the edge of the top surface of the BC battery 2, and the lower lip 5 is used to wrap the edge of the bottom surface of the BC battery 2. The mating length between the upper lip 7 and the top surface of the BC battery 2 is less than the mating length between the lower lip 5 and the bottom surface of the BC battery 2 (i.e., the length of the upper lip 7 is less than that of the lower lip 5). The relatively longer mating length of the lower lip 5 ensures its supporting effect on the BC battery 2, while the shorter upper lip 7 reduces its shading of the top surface of the BC battery 2, thereby obtaining a larger light-receiving area. The top of the upper lip 7 has a slope 4 that gradually increases in height from the inside to the outside (i.e., from the side wrapping the BC battery 2 to the outside of the BC battery 2). The upper lip 7 also has a water-guiding notch at its outermost top, which is suitable for draining water that is above a set height above the top of the BC battery 2. The slope 4 and the water-guiding notch form a flow guiding structure. When there is little water, the water moves towards the center of the top surface of the BC battery 2 through the setting of the inclined plane 4, and is removed by subsequent evaporation; when there is a lot of water, it is discharged through the water guide gap, and the remaining water is removed by evaporation.

[0038] Since BC batteries 2 are typically installed at an angle, the inclined surface 4 serves as the primary drainage structure, allowing water to be poured directly over the BC batteries 2. Without the inclined surface 4, the top of the frame layer 1 would need a protruding section to limit the BC batteries 2, resulting in an approximately right angle at the connection point. After the inclined installation, water would be more easily trapped in this gap, making it prone to seepage. With the inclined surface 4 installed, this right angle is eliminated, allowing water to flow out and reducing water accumulation.

[0039] The top of the upper lip 7 can be chamfered to form a bevel 4. The thickness of the upper lip 7 decreases from the outside to the inside (corresponding to the aforementioned increase in height from the inside to the outside). When the BC battery 2 tends to move upwards, its deformation is less likely to occur due to the larger thickness of the outer side of the upper lip 7, thus preventing the BC battery 2 from moving. The bottom of the BC battery 2 is supported by a longer lower lip 5, which has a larger support area and is therefore relatively stable.

[0040] Because the upper lip 7 needs to be sloped 4, its outer height increases accordingly. If it rains, a higher water layer may form on top of the BC battery 2. To reduce the water thickness, a water-guiding notch is provided on the outer side of the upper lip 7, effectively reducing the thickness of water that can accumulate on top of the BC battery 2. Two specific implementations of the water-guiding notch are presented below.

[0041] (1) Reference Figure 5 Multiple drainage channels 8 are spaced apart at the top edge of the upper lip 7. The drainage channels 8 are formed by cutting from directly above the upper lip 7. The maximum water accumulation height inside the upper lip 7 is the highest point of the notch formed by the drainage channel 8 on the top slope 4 of the upper lip 7. After cutting, the problem of increased top height caused by the slope 4 on the upper lip 7 is solved. The water does not need to be higher than the slope 4 to be discharged; it only needs to be higher than the height of the drainage channel 8.

[0042] (2) Reference Figure 6 The outer top of the upper lip 7 is cut to form an annular drainage chamfer 9. The cross-section of the upper lip 7 is formed by the drainage chamfer 9 and the inclined surface 4 at the top of the upper lip 7, forming an inverted "V" shaped arch. The drainage chamfer 9 is similar in principle to the drainage groove 8 mentioned above, except that the setting method has changed from the shorter drainage groove 8 to a drainage chamfer 9 set on the entire edge.

[0043] Both types of drainage notches described above can drain water to reduce the water accumulation height at the top of the BC battery 2. Since the battery is installed at a certain angle, the water accumulation at the top of the BC battery 2 is not directly determined by the height of the top of the drainage notch; the specific setup after tilting must also be considered. After tilting, water will only accumulate in the bottom area, so water generally concentrates at the bottom. The drainage notch can also be installed only at the bottom after installation.

[0044] like Figure 1 , Figure 2 As shown, a support cavity 3 is formed at the bottom of the frame layer 1, and a water guide hole 10 is formed at the bottom of the support cavity 3, which is inclined outward. Corresponding waterproof measures are also provided at the bottom of the frame layer 1 to prevent water from accumulating at the bottom of the support cavity 3 and to facilitate the timely drainage of water from the bottom of the BC battery 2.

[0045] The BC battery 2 encapsulation frame also includes heat dissipation channels 11 disposed on both sides of the support cavity 3. The heat dissipation channels 11 sequentially connect the external environment, the inner cavity of the support cavity 3, and the space between the bottom of the BC battery 2. The heat dissipation channels 11 can be used to dissipate heat from the BC battery 2. Increasing the number of connecting holes can increase air circulation to a certain extent, thereby increasing the heat dissipation effect. The heat dissipation channels 11 are inclined downwards from the inside out, which can prevent rainwater from entering the heat dissipation channels 11 from the outside.

[0046] The top of the sealing layer 6 extends beyond the inner side of the top of the upper lip 7, and the top of the extended portion forms a downward-facing arched protrusion; after installation, the inner edge of the upper lip 7 is adapted to abut against the arched protrusion. This arched protrusion, similar to the bevel 4 on the upper lip 7, has the effect of preventing deformation, but the purpose of preventing deformation here is to ensure a better fit and seal between the sealing layer 6 and the contact edge of the BC battery 2.

[0047] The fastening groove has two corners at the upper and lower outer edges of the BC battery 2. The angles at these corners are acute. The sealing layer 6 is thickened at these corners, so that the inner side of the installed sealing layer 6 forms a fitting groove that fits the outer edge of the BC battery 2. The acute corners of the fastening groove provide good fixation after the sealing layer 6 is installed. The purpose of thickening the sealing layer 6 is to create a cavity within the sealing layer 6 that fits snugly against the BC battery 2.

[0048] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A BC battery packaging frame, characterized in that, It includes a frame layer and a sealing layer. The top of the frame layer has a snap-fit ​​groove that mates with the BC battery. The sealing layer is fitted into the snap-fit ​​groove. The sealing layer and the snap-fit ​​groove have a flow guiding structure at their outer edges where they fit together. The flow guiding structure is adapted to prevent water from accumulating in the edge area at the top of the BC battery.

2. The BC battery packaging frame as described in claim 1, characterized in that, The fastening groove includes an upper lip and a lower lip. The length of the upper lip is shorter than that of the lower lip, and the top of the upper lip forms a slope with the height increasing from the inside to the outside. The upper lip has a water-guiding notch at the top of its outermost side. The water-guiding notch is suitable for draining water that is above a set height at the top of the BC battery. The slope and the water-guiding notch form the flow guiding structure.

3. The BC battery packaging frame as described in claim 2, characterized in that, Multiple drainage grooves are spaced apart at the top edge of the upper lip. The drainage grooves are formed by cutting from the top of the upper lip. The maximum water accumulation height inside the upper lip is the highest point of the notch formed by the drainage groove on the top slope of the upper lip.

4. The BC battery packaging frame as described in claim 2, characterized in that, The outer top of the upper lip is cut to form an annular drainage chamfer, and the cross-section of the upper lip is formed by connecting the drainage chamfer and the inclined surface at the top of the upper lip to form an inverted "V" shaped arch.

5. The BC battery packaging frame as described in claim 2, characterized in that, A support cavity is formed at the bottom of the frame layer, and a water guide hole is formed at the bottom of the support cavity, which is inclined outward.

6. The BC battery packaging frame as described in claim 5, characterized in that, It also includes heat dissipation channels disposed on both sides of the support cavity. The heat dissipation channels are arranged inclined downward from the inside out. The heat dissipation channels are sequentially connected to the external environment, the inner cavity of the support cavity and the space between the bottom of the BC battery.

7. The BC battery packaging frame as described in claim 2, characterized in that, The top of the sealing layer extends beyond the top inner side of the upper lip, and the top of the extended portion forms a downward-facing arched protrusion; after installation, the inner edge of the upper lip is adapted to abut against the arched protrusion.

8. The BC battery packaging frame as described in claim 1, characterized in that, The fastening groove has two corners at the upper and lower outer edges of the BC battery. The angle of the fastening groove at the two corners is acute. The sealing layer is thickened at the two corners so that the inner side of the sealing layer after installation forms a fitting groove that fits the outer edge of the BC battery.

9. The BC battery packaging frame as described in claim 8, characterized in that, The sealing layer and the fastening groove are fixed by a combination of adhesive and snap-fit ​​connection.

10. The BC battery packaging frame as described in claim 8, characterized in that, The frame layer is a separate structure, while the sealing layer is an integral structure. The separate frame layer is installed after the sealing layer and the BC battery are fitted together.

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