A cell holder assembly and a battery pack

Abstract

The utility model relates to lithium battery technical field discloses a kind of battery cell support assembly and battery pack, the utility model's battery cell support assembly, including first support;Second support, and first support between formation has the accommodation area for accommodating and fixed cell;And buckle structure, including buckle, buckle is located on second support, first support is equipped with buckling hole, buckle is pressed into buckling hole, second support is connected with first support by buckle and is buckled;The utility model of battery pack, including multiple above-mentioned battery cell support assembly, multiple battery cell support assembly stacking, multiple battery cell support assembly between being provided with connecting structure.The utility model plays the technical effect of replacing traditional screw lock, improves the technical effect of the convenience of battery cell support assembly and disassembly operation.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery technology, specifically relating to a cell support assembly and a battery pack. Background Technology

[0002] With the rapid development of new energy and energy storage technologies, the structural design of battery packs, as the core energy carriers, directly affects the safety and energy density of the system.

[0003] A battery pack typically includes modules formed by combining multiple cells in series and parallel, a battery management system, a thermal management system, and structural components. Inside the battery pack, the cells are usually arranged in an array and secured and integrated using bracket assemblies to prevent displacement due to vibration, impact, or thermal expansion, which could lead to short circuits, thermal runaway, or other safety hazards. Currently, bracket assemblies typically consist of an upper bracket and a lower bracket, which are plastic or metal frames. The cells are placed between the upper and lower brackets, which are then secured with screws to fix the cells in place.

[0004] However, the upper and lower brackets are fastened with screws, which requires manual or special equipment to tighten them one by one. The operation is cumbersome, and a large number of screws need to be removed during later maintenance, resulting in long maintenance time. Utility Model Content

[0005] To address the shortcomings of the prior art, this utility model provides a cell support assembly and a battery pack. The first and second supports are fixed by a snap-fit ​​structure, replacing the traditional screw fastening, which can save screw materials and special equipment, and at the same time improve the convenience of assembly and disassembly operations.

[0006] The technical effects to be achieved by this utility model are realized through the following technical aspects:

[0007] In a first aspect, the present invention provides a battery cell support assembly, including a first support; a second support, with a receiving area for accommodating and fixing the battery cell formed between the second support and the first support; and a fastening structure, including a buckle, the buckle being disposed on the second support, the first support having a fastening hole, the buckle being pressed into the fastening hole, and the second support being fastened to the first support via the buckle.

[0008] In some implementations, the first bracket is provided with a sleeve at the fastening hole, and the sleeve has a first deformation groove, and the buckle is inserted into the sleeve and engaged with the sleeve.

[0009] In some implementations, the buckle includes a column with a tapered connector that passes through the sleeve and engages with it.

[0010] In some implementations, the tapered joint is provided with a second deformation groove, and when the tapered joint is engaged with the ferrule, the tapered joint deforms at the second deformation groove.

[0011] In some implementations, the tapered connector includes a bottom end that engages with the ferrule, with the bottom end abutting against the corresponding side of the ferrule.

[0012] In some implementations, the width of the contact surface between the bottom end and the sleeve is the engagement amount, which is 0.6 to 1.2 mm.

[0013] In some implementations, the first bracket includes a first connecting portion extending toward the second bracket, the latch being disposed on the first connecting portion, and the first connecting portion being bent to cover the battery cell within the receiving area; the second bracket includes a second connecting portion extending toward the first bracket, the latching hole being formed on the second connecting portion, and the second connecting portion being bent to cover the battery cell within the receiving area.

[0014] Secondly, this utility model provides a battery pack, including multiple cell support assemblies as described above, the multiple cell support assemblies being stacked, and a connection structure being provided between the multiple cell support assemblies.

[0015] In some implementations, the connection structure includes a first connecting sleeve disposed on a first support; a second connecting sleeve disposed on a second support, wherein the first connecting sleeve and the second connecting sleeve are both located within the receiving area and are arranged opposite to each other; and a connector passing through the first connecting sleeve and the second connecting sleeve.

[0016] In some implementations, both the first connecting sleeve and the second connecting sleeve are located at the center of the receiving area.

[0017] In summary, this utility model has at least the following advantages:

[0018] 1. The battery cell support assembly provided by this utility model allows for easy assembly. During assembly, the battery cell is placed in the receiving area, and the buckle is pressed into the fastening hole. The buckle is then tightened, and the second support is engaged with the first support via a fastening structure, thus fixing the first and second supports. Disassembly of the first and second supports is achieved by simply pulling the buckle out of the fastening hole, making the operation convenient. Compared to the traditional method of fixing the upper and lower supports with screws, the first and second supports do not require manual or specialized equipment for tightening screws, saving on screw material costs while simplifying assembly steps, improving disassembly and assembly efficiency, and ensuring the stability of the assembled first and second supports. The fastening structure allows for repeated assembly and disassembly of the first and second supports, enabling them to be used multiple times and reducing waste.

[0019] 2. The battery pack provided by this utility model has multiple support components stacked and connected by a connecting structure, which can realize the flexible series connection of multiple battery modules to adjust the voltage. It is flexible in use. The battery pack of this utility model has a simple structure and is easy to disassemble and assemble, and is highly practical. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a battery cell support assembly according to a specific embodiment of the present utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the first support in a specific embodiment of the present utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the second bracket in a specific embodiment of the present utility model.

[0023] Figure 4 for Figure 2 A structural diagram from another angle.

[0024] Figure 5 This is a side view of a battery cell support assembly according to a specific embodiment of the present utility model.

[0025] Figure 6 for Figure 5 A schematic diagram of the AA section.

[0026] Figure 7 for Figure 6 Enlarged diagram of part B.

[0027] Marked in the image:

[0028] 1. First bracket; 11. First connecting part; 12. Assembly hole; 13. Fixing hole;

[0029] 2. Second bracket; 21. Reception area; 22. Second connecting part;

[0030] 3. Snap-fit ​​structure; 31. Snap-fit; 311. Column; 312. Conical joint; 3121. Second deformation groove; 3122. Tip; 3123. Bottom end; 32. Snap-fit ​​hole; 33. Sleeve; 331. First deformation groove;

[0031] 4. Connection structure; 41. First connecting sleeve; 42. Second connecting sleeve;

[0032] 5. Battery cells. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] Example 1:

[0036] Please see Figure 1 The battery cell support assembly of this utility model is easy to assemble and disassemble, and can be reused, which is beneficial to battery assembly and subsequent maintenance.

[0037] The battery cell support assembly of this utility model includes a first support 1 and a second support 2. A receiving area 21 for accommodating and fixing the battery cell 5 is provided between the first support 1 and the second support 2. The first support 1 and the second support 2 are provided with a fastening structure 3, and the first support 1 and the second support 2 fix the battery cell 5 through the fastening structure 3.

[0038] The fastening structure 3 includes a snap fastener 31, which is disposed on the second bracket 2. The first bracket 1 has a fastening hole 32. The snap fastener 31 is pressed into the fastening hole 32, and the second bracket 2 is fastened to the first bracket 1 via the snap fastener 31. In a preferred embodiment, multiple fastening structures 3 can be provided. The provision of multiple fastening structures 3 improves the stability of the assembly of the first bracket 1 and the second bracket 2 and reduces the impact of vibration or impact on the battery cell 5.

[0039] During the assembly of the cell support assembly and the cell 5, the cell 5 is placed in the receiving area 21, the buckle 31 is aligned with the fastening hole 32, and is pressed into the fastening hole 32 under external force. The first support 1 and the second support 2 can be fastened together by the fastening structure 3 to fix the cell 5. When the battery product has been used for a long time and needs maintenance, the buckle 31 is squeezed, and the buckle 31 deforms and can then be released from the fastening hole 32.

[0040] Compared to traditional screw fastening methods, the snap-fit ​​structure 3 is simpler, directly eliminating the need for screws and reducing production costs. It also eliminates the need for manual labor or specialized equipment to tighten or loosen screws, simplifying cumbersome assembly and disassembly operations and improving production efficiency. Traditional screw fastening often leads to stripped screws during later maintenance due to repeated disassembly and reassembly. The snap-fit ​​structure 3 effectively solves the problem of reusability of the first and second brackets, allowing for repeated assembly and disassembly, reducing waste and further lowering costs.

[0041] Example 2:

[0042] The difference between this embodiment and Embodiment 1 is that this embodiment further optimizes the structure of the fastening structure 3 of this utility model. Please refer to [link / reference]. Figures 1-7 .

[0043] Please see Figure 1 and Figure 2 In this embodiment, the first bracket 1 is provided with a retaining sleeve 33 at the fastening hole 32. Specifically, the retaining sleeve 33 can be integrally formed with the first bracket 1 by injection molding. The retaining sleeve 33 is provided with a first deformation groove 331, which is specifically a U-shaped groove. Multiple first deformation grooves 331 are provided and arranged in a ring around the axis of the retaining sleeve 33. When the buckle 31 is inserted into the retaining sleeve 33, it engages with the retaining sleeve 33. The engagement of the buckle 31 and the retaining sleeve 33 helps to improve the stability of the assembly.

[0044] Please see Figure 2 and Figure 3 In a preferred embodiment, the buckle 31 includes a column 311, on which a tapered connector 312 is provided. The tapered connector 312 passes through the sleeve 33 and engages with the sleeve 33. The tapered connector 312 includes a tip 3122. When the tapered connector 312 is pressed into the sleeve 33, the tip 3122 of the tapered connector 312 advances first, so as to guide the buckle 31 during the engagement process and facilitate the engagement of the buckle 31 and the sleeve 33.

[0045] In some specific embodiments, a second deformation groove 3121 is provided on the conical head. The second deformation groove 3121 can extend towards the column 311. When the conical joint 312 is engaged with the sleeve 33, the conical joint 312 deforms at the second deformation groove 3121. The second deformation groove 3121 reserves deformation space, which can facilitate the assembly and disassembly of the conical joint 312 and the sleeve 33.

[0046] Please see Figures 5-7In other specific embodiments, the tapered connector 312 includes a tip 3122 and a bottom end 3123. The tapered connector 312 gradually tapers from the bottom end 3123 to the tip 3122. The bottom end 3123 of the tapered connector 312 is connected to the column 311. An inclined surface is formed between the bottom end 3123 and the tip 3122. The inclination angle of the inclined surface can be 35~45°. The tapered connector 312 can be easily engaged with the sleeve 33. When the tapered connector 312 is engaged with the sleeve 33, the corresponding sides of the tapered connector 312 and the sleeve 33 abut against each other. The width of the abutting surface between the bottom end 3123 and the sleeve 33 is the engagement amount L, which is 0.6~1.2mm. The tapered connector 312 and the sleeve 33 are securely assembled.

[0047] Furthermore, the ferrule 33 can be a conical sleeve, which includes a pointed end and an open end. The ferrule 33 is connected to the first bracket 1 at the open end. During assembly, it is inserted into the ferrule 33 from the open end and then exits from the pointed end. The conical connector 312 is fastened to the ferrule 33. The ferrule 33 is conical, and the conical connector 312 and the column 311 can smoothly enter the ferrule 33 and ensure the stability after fastening.

[0048] The fastening structure 3 in this embodiment is compact. The buckle 31 and the sleeve 33 are elastically fastened. When the buckle 31 is pressed into the sleeve 33, the buckle 31 deforms at the conical joint 312. When the conical joint 312 passes through the sleeve 33, it returns to its original shape to achieve fastening. When separating the buckle 31 and the sleeve 33, the conical joint 312 is squeezed, causing it to deform again, allowing it to be pulled out through the sleeve 33. The operation is convenient. At the same time, the buckle 31 and the sleeve 33 can achieve 360° circumferential fastening, which helps to improve the stability of the fastening.

[0049] Example 3:

[0050] The difference between this embodiment and Embodiment 1 is that this embodiment further optimizes the structure of the first support 1 and the second support 2 of this utility model. Please refer to [link / reference]. Figures 1-3 .

[0051] Please see Figure 1 and Figure 2 In this embodiment, the first bracket 1 includes a first connecting portion 11 extending to the second bracket 2. A buckle 31 is provided on the first connecting portion 11. The first connecting portion 11 is bent to cover the battery cell 5 in the accommodating area 21. In some specific embodiments, the battery cell 5 is a cylindrical battery cell 5. The first connecting portion 11 is bent to form a wavy inner wall so that the inner wall of the first connecting portion 11 fits with the outer wall of the battery cell 5. This helps to reduce the displacement of the battery cell 5 due to external factors such as vibration and improves the stability of the battery cell 5.

[0052] Similarly, please see Figure 1 and Figure 3 The second bracket 2 includes a second connecting portion 22 extending toward the first bracket 1. A buckle 31 hole is formed on the second connecting portion 22. The second connecting portion 22 is bent to cover the battery cell 5 in the receiving area 21. The second connecting portion 22 is adapted to the battery cell 5 in the receiving area 21.

[0053] In a preferred embodiment, both the first bracket 1 and the second bracket 2 are provided with assembly holes 12 for placing the battery cell 5. The assembly holes 12 of the first bracket 1 and the assembly holes 12 of the second bracket 2 are correspondingly arranged. The battery cell 5 is placed in the assembly hole 12 and the battery cell 5 is arranged in a regular manner, which helps to improve the stability of the battery cell 5.

[0054] In a preferred embodiment, both the first bracket 1 and the second bracket 2 are provided with fixing holes 13 for fixing the protection plate. The fixing holes 13 are filled with a strip to fix the protection plate, and the battery cell bracket assembly has a compact structure.

[0055] In this embodiment, the first bracket 1 and the second bracket 2 are engaged with the fastening structure 3, resulting in a stable assembly.

[0056] Example 4:

[0057] This embodiment provides a battery pack based on the above embodiments.

[0058] Please see Figure 1 A battery pack includes multiple cell support assemblies as described above. The multiple cell support assemblies are stacked, and a connection structure 4 is provided between the multiple cell support assemblies. The connection structure 4 is connected in series, which is beneficial for flexibly adjusting the voltage of the battery pack.

[0059] Please see Figure 3 and Figure 4 In a preferred embodiment, the connection structure 4 includes a first connecting sleeve 41 and a second connecting sleeve 42, wherein the first connecting sleeve 41 is disposed on the first support 1; the second connecting sleeve 42 is disposed on the second support 2. The first connecting sleeve 41 and the second connecting sleeve 42 are both located in the accommodating area 21 and are arranged opposite to each other, which can play the role of separating the battery cells 5 in the accommodating area 21 and have a compact structure.

[0060] In some specific embodiments, the first connecting sleeve 41 and the second connecting sleeve 42 are both located at the center of the accommodating area 21, and the internal layout of the battery cell support assembly is reasonable.

[0061] Connectors are inserted into the first connecting sleeve 41 and the second connecting sleeve 42. In some specific embodiments, the connectors can be bolts, such as M4 bolts. The connectors pass through the first connecting sleeve 41 and the second connecting sleeve 42 of multiple cell support assemblies in sequence. Multiple cell support assemblies can be connected by a single connector, saving materials. Moreover, the battery pack of this utility model occupies less space, is flexible in use, and is suitable for the needs of automated production.

[0062] In some specific embodiments, a positioning structure can be provided between two adjacent battery cell support assemblies. Preferably, the two adjacent battery cell support assemblies are a first module and a second module. The positioning structure includes a positioning block, which is provided on the first support 1 of the first module, while a positioning groove is provided on the second support 2 of the second module. The positioning block and the positioning groove are inserted and matched to realize the positioning of the first module and the second module, so as to facilitate the assembly of subsequent connectors and make the operation convenient.

[0063] The battery pack of this invention is easy to assemble and disassemble, and the after-sales maintenance process is simple.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0066] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0067] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0068] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. An electrochemical cell holder assembly comprising: include First support (1); The second bracket (2) has a receiving area (21) between it and the first bracket (1) for accommodating and fixing the battery cell (5); as well as The fastening structure (3) includes a buckle (31), which is disposed on the second bracket (2). The first bracket (1) has a fastening hole (32). The buckle (31) is pressed into the fastening hole (32), and the second bracket (2) is fastened to the first bracket (1) via the buckle (31).

2. The cell holder assembly of claim 1, wherein, The first bracket (1) is provided with a sleeve (33) at the fastening hole (32). The sleeve (33) has a first deformation groove (331). The buckle (31) passes into the sleeve (33) and engages with the sleeve (33).

3. The cell holder assembly of claim 2, wherein, The buckle (31) includes a column (311) on which a tapered connector (312) is provided. The tapered connector (312) passes through the sleeve (33) and engages with the sleeve (33).

4. The cell holder assembly of claim 3, wherein, The tapered connector (312) is provided with a second deformation groove (3121). When the tapered connector (312) is engaged with the sleeve (33), the tapered connector (312) deforms at the second deformation groove (3121).

5. The cell holder assembly of claim 3, wherein, The tapered connector (312) includes a bottom end (3123), which engages with the sleeve (33), and the bottom end (3123) abuts against the corresponding side of the sleeve (33).

6. The cell holder assembly of claim 5, wherein, The width of the contact surface between the bottom end (3123) and the sleeve (33) is the engagement amount, which is 0.6 ~ 1.2 mm.

7. The cell support assembly according to claim 1, characterized in that, The first bracket (1) includes a first connecting portion (11) extending toward the second bracket (2), the buckle (31) is provided on the first connecting portion (11), and the first connecting portion (11) is bent to cover the battery cell (5) in the receiving area (21); The second bracket (2) includes a second connecting portion (22) extending toward the first bracket (1), the buckle (31) hole being formed on the second connecting portion (22), and the second connecting portion (22) being bent to cover the battery cell (5) in the receiving area (21).

8. A battery pack, characterized in that, It includes multiple cell support assemblies as described in any one of claims 1-7, wherein multiple cell support assemblies are stacked and a connection structure (4) is provided between multiple cell support assemblies.

9. The battery pack according to claim 8, characterized in that, The connection structure (4) includes The first connecting sleeve (41) is disposed on the first bracket (1); A second connecting sleeve (42) is disposed on the second bracket (2), and the first connecting sleeve (41) and the second connecting sleeve (42) are both located within the receiving area (21) and arranged opposite to each other; and The connector is inserted into the first connecting sleeve (41) and the second connecting sleeve (42).

10. The battery pack according to claim 9, characterized in that, The first connecting sleeve (41) and the second connecting sleeve (42) are both located at the center of the receiving area (21).

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