Aluminum buckle type fixing structure and CCS assembly

Abstract

The utility model discloses a kind of aluminium bar buckle type fixing structure and CCS assembly, aluminium bar buckle type fixing structure includes isolation plate and the fixing buckle integrally injection moulded with isolation plate;Formed with aluminium bar groove for aluminium bar installation on isolation plate, fixing buckle is distributed at the peripheral position of aluminium bar groove;Fixing buckle includes buckle base, and buckle base is formed with the elastic arm that is upright upwards, elastic arm bifurcates into two groups, and the top of each group elastic arm is provided with anti-drop boss;Aluminium bar is provided with the card slot hole for the elastic arm of fixing buckle to pass through and fixed.CCS assembly fixes aluminium bar using the above-mentioned aluminium bar buckle type fixing structure.This new type simplifies aluminium bar assembly process, realizes tool-free quick assembly, improves the stability and reliability of aluminium bar fixation, to provide high security and reliable electrical connection, optimize battery module internal space layout, very suitable for miniaturization, high integration development trend of new energy automobile power battery module.

Description

Technical Field

[0001] This utility model relates to aluminum bar fixing structures, and more particularly to an aluminum bar snap-on fixing structure and CCS assembly. Background Technology

[0002] In the cell connection system of a battery module, the aluminum busbar is a key component for realizing the electrical connection between cells. Its fixing method is directly related to the connection stability, assembly efficiency and structural compactness.

[0003] Traditional aluminum bar fixing methods have many drawbacks, as follows: 1) Bolted Connection: Assembly using bolted connections requires tightening each bolt individually, a cumbersome process that consumes significant manpower and time, and significantly reduces production efficiency. Furthermore, bolted connections require ample operating space, reducing the utilization of the battery module's internal space and failing to meet the current demands for miniaturization. Additionally, during vehicle operation, the battery module is continuously subjected to vibrations, which can cause bolts to loosen, leading to poor electrical connections, affecting the normal operation of the battery module, and potentially posing safety hazards.

[0004] 2) Hot riveting fixing method: Although hot riveting fixing can achieve a relatively firm connection, it requires the addition of hot riveting equipment, and high temperature may be generated during the hot riveting process. It also requires high precision control of the hot riveting process. In addition, the structure after hot riveting cannot be disassembled and repaired.

[0005] Therefore, there is an urgent need to provide a new type of aluminum battery fixing structure to solve the problems of traditional fixing methods and meet the current development needs of miniaturization and high reliability of battery modules. Utility Model Content

[0006] To address the shortcomings of the aforementioned technologies, this utility model provides an aluminum buckle-type fixing structure and a CCS assembly.

[0007] To solve the above technical problems, the technical solution adopted by this utility model is: an aluminum buckle-type fixing structure, which includes an isolation plate and a fixing buckle integrally injection molded with the isolation plate; The isolation plate has aluminum bar grooves for aluminum bar installation, and fixing clips are distributed around the aluminum bar grooves; The fixing buckle includes a buckle base, on which an upwardly extending elastic arm is formed. The elastic arm is forked into two groups, and each group of elastic arms has an anti-detachment protrusion at the top. The aluminum bar has slot holes through which elastic arms for securing the buckles pass and are fixed.

[0008] Preferably, the perimeter of the aluminum channel is also provided with baffles that are integrally injection molded with the partition plate.

[0009] Preferably, a thermal expansion compensation groove is formed between the two sets of elastic arms, and the anti-detachment protrusion extends in a direction away from the thermal expansion compensation groove.

[0010] Preferably, the top surface of each anti-detachment protrusion is a guide slope, which slopes downward in a direction away from the thermal expansion compensation groove.

[0011] Preferably, the buckle base of the fixing buckle is integrally connected with the isolation plate.

[0012] A CCS component comprising an aluminum snap-fit ​​fastening structure.

[0013] Preferably, the CCS assembly also includes an FPC and a nickel sheet; The FPC is mounted on the isolation plate, and the FPC is connected to the aluminum bar by welding with nickel sheets. The aluminum bar is installed in the aluminum bar groove and fixed by fixing buckles.

[0014] This utility model discloses an aluminum bar clip-on fixing structure and CCS assembly. It uses elastic fixing clips made of PC+ABS material to firmly and stably fix the aluminum bar to the isolation plate, thereby simplifying the assembly process, realizing tool-free rapid assembly, improving the stability and reliability of the aluminum bar fixing, providing a highly secure and reliable electrical connection, and optimizing the internal space layout of the battery module. It is very suitable for the miniaturization and high integration development trend of power battery modules for new energy vehicles. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the CCS component of this utility model.

[0016] Figure 2 for Figure 1 A stereoscopic view from the rear side.

[0017] Figure 3 for Figure 1 The main view.

[0018] Figure 4 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0019] Figure 5 for Figure 1 A schematic diagram of the structure of the alumina bar.

[0020] In the diagram: 1. Isolation plate; 2. Aluminum bar; 3. Fixing buckle; 4. Stop bar; 5. Nickel sheet; 6. Aluminum bar; 7. FPC; 31. Buckle base; 32. Anti-detachment protrusion; 33. Guide slope; 34. Elastic arm; 35. Thermal expansion compensation groove. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Example 1 This embodiment discloses an aluminum bar snap-on fixing structure. Based on the snap-on fixing principle, the aluminum bar 6 is stably and firmly fixed on the separator plate 1 to simplify the assembly process, optimize the internal space layout of the battery module, and adapt to the development trend of miniaturization and high integration.

[0023] like Figure 1 As shown, the main structural components of the Alba buckle-type fixing structure include: a partition plate 1 and a fixing buckle 3 integrally injection molded with the partition plate 1; Among them, the isolation plate 1 adopts the injection molding process and uses PC+ABS composite material as raw material. According to the designed mold, the isolation plate 1 has an integrally formed structure such as aluminum groove 2, fixing buckle 3 and baffle 4.

[0024] The aluminum bar channel 2 provides an installation area for the aluminum bar 6. The aluminum bar 6 is fixed on the isolation plate 1 by means of the fixing buckle 3 and the baffle 4.

[0025] First, such as Figure 5 As shown, a slot hole 61 is provided on the aluminum bar 6 for engaging and fixing with the fixing buckle 3; Secondly, the specific structural features of the fixing buckle 3 are as follows: Figure 4 As shown, the fixing buckle 3 includes a buckle base 31, which is integrally connected to the isolation plate 1; An upwardly extending elastic arm 34 is formed on the buckle base 31. The elastic arm 34 is forked into two groups. The two groups of elastic arms 34 are spaced apart based on the thermal expansion compensation groove 35 between them. The elastic arm 34 is made of PC+ABS material and has good elastic deformation capability. Each set of elastic arms 34 is provided with an anti-detachment protrusion 32 at the top. Specifically, the anti-detachment protrusion 32 extends away from the thermal expansion compensation groove 35 so that the anti-detachment protrusions 32 of the two sets of elastic arms 34 are symmetrically distributed. The anti-detachment protrusion can be inserted into the slot hole 61 of the aluminum bar after the fixing buckle 3 is engaged to prevent loosening. Meanwhile, the top surface of each anti-detachment protrusion 32 is a guide slope 33, that is, it is inclined downward in the direction away from the thermal expansion compensation groove 35 to form a guide slope 33. The guide slope 33 facilitates the locking operation during assembly.

[0026] Therefore, based on the above-mentioned slot hole 61 and the structure of the fixing buckle 3, when assembling the aluminum bar on the isolation plate 1, the aluminum bar 6 is aligned with the buckle mounting point on the isolation plate 1, and appropriate pressure is applied using the guide slope of the fixing buckle 3, so that the elastic arm 34 undergoes elastic deformation (that is, the two sets of elastic arms 34 deform and converge towards the direction of the thermal expansion compensation groove 35). After the anti-detachment protrusion 32 and the elastic arm 34 pass through and are inserted into the slot hole 61, the elastic arm 34 returns to its original deformation (that is, the two sets of elastic arms 34 return to the direction away from the thermal expansion compensation groove 35). The anti-detachment protrusion 32 prevents the fixing buckle 3 from falling off the aluminum bar, thus completing the fixation of the aluminum bar 6 on the isolation plate 1.

[0027] Furthermore, preferably, the fixing buckles 3 are distributed around the periphery of the aluminum groove 2; at the same time, a baffle 4 integrally injection molded with the partition plate 1 is also provided around the periphery of the aluminum groove 2. The baffle 4 can further enhance the fixing effect.

[0028] In addition, the thermal expansion compensation groove 35 also has the function of preventing the buckle from breaking when the battery cell expands. The thermal expansion compensation groove 35, combined with the elastic arm 34, can cope with the thermal expansion and contraction of materials under different temperature environments, and avoid the structure from becoming loose or damaged due to temperature changes.

[0029] In summary, the process for achieving the aluminum bar fastening assembly of the aluminum bar according to the aluminum bar snap-on fixing structure disclosed in this utility model is as follows: CCS partition panel manufacturing: Using injection molding process, PC+ABS composite material is used as raw material. According to the designed mold, the partition panel with aluminum bar groove, fixing buckle, baffle and other structures is integrally molded. After molding, deburring, surface cleaning and other post-processing are carried out to ensure dimensional accuracy and surface quality.

[0030] Aluminum bar preparation: Aluminum plates are cut and stamped to obtain suitable shapes and sizes. Then, surface treatments such as hydrocarbon cleaning are performed. After treatment, the surface quality and conductivity are inspected to ensure that the surface quality and conductivity of the treated aluminum bar meet the electrical connection requirements of the battery module.

[0031] CCS barrier plate and aluminum bar assembly: Align the aluminum bar with the buckle mounting point of the barrier plate, apply appropriate pressure using the guide slope of the fixed buckle elastic arm to make the buckle elastically deform and snap into the corresponding buckle slot hole; after the buckle is engaged, check whether the anti-loosening protrusion is embedded in place, lightly pull and vibrate to test the fixing stability of the aluminum bar, and confirm that the assembly is qualified, thus completing the CCS structure assembly of the buckle-fixed aluminum bar.

[0032] Example 2 This embodiment discloses a CCS component, such as Figure 1-3 As shown, the CCS assembly uses the aluminum bar snap-fit ​​fixing structure disclosed in Example 1 to fix the aluminum bar 6 on the isolation plate 1.

[0033] The aluminum bar 6 is used for electrical connection between battery cells. It is firmly fixed to the aluminum bar groove 2 of the isolation plate 1 by the fixing buckle 3 with specific elastic deformation capability, and the stop bar 4 further strengthens the limiting and fixing.

[0034] Furthermore, the CCS component also includes FPC7 and nickel sheet 5; FPC, or Flexible Printed Circuit Board, is fixedly mounted on the isolation plate 1 and connected to the aluminum bar 6 by soldering through nickel sheet 5 to achieve the synergistic effect of electrical conduction and signal management.

[0035] In summary, the aluminum buckle-type fixing structure and CCS assembly disclosed in this utility model have the following technical advantages compared with the prior art: 1) Integrated fixing buckle integration: The fixing buckle structure with elastic deformation capability is cleverly combined with the isolation plate, plus the baffle strip, eliminating the need for additional fastening parts, simplifying the overall structure, reducing the number of parts, and lowering production costs; The guide ramp on the elastic arm of the fixed buckle facilitates quick engagement during assembly, while the anti-loosening protrusion prevents loosening after engagement. Compared with traditional bolt connections, it achieves efficient assembly while maintaining higher connection stability. Meanwhile, the two elastic arms are spaced apart to form a thermal expansion compensation groove. When the battery cell expands, it will squeeze the aluminum bar towards the center. The aluminum bar deforms and squeezes the buckle. The groove in the middle of the buckle (i.e., the thermal expansion compensation groove) is not only conducive to installation, but also prevents the buckle from breaking due to the expansion of the battery cell.

[0036] 2) The partition plate is made of PC+ABS material. This material combines the high strength and heat resistance of PC with the good processability and impact resistance of ABS. It not only meets the insulation requirements but also provides a reliable elastic deformation basis for the fixing clips, ensuring the fixing effect and service life of the clips. Therefore, the choice of PC+ABS material allows the partition plate to have good insulation performance while also adapting to the elastic deformation requirements of the clip structure, thus improving the overall structural performance.

[0037] 3) Utilizing the elastic deformation capability of the fixing buckle and the guide slope design, no workpiece is required during assembly. Simply align the aluminum clamp with the mounting position and apply appropriate pressure to secure it, achieving tool-free rapid assembly. This significantly simplifies the assembly process, improves assembly efficiency, and meets the needs of large-scale production. Compared to traditional bolt connections and riveting methods, it saves assembly time, connection costs, and reduces assembly difficulty.

[0038] 4) It is known that aluminum foil bars can fix the battery cells after laser welding. Conventional square stacked battery cells (such as lithium iron phosphate and ternary lithium batteries) are mainly fixed by mechanical means, with foam or other adhesives used to fill the gaps between the cells. This new aluminum foil bar snap-on fixing structure provides a stable and reliable fixation for the aluminum foil bar, achieving a fixed spacing between the battery cells. Thus, by directly fixing the aluminum foil bar, the purpose of indirectly fixing the battery cells is achieved, which can, to a certain extent, replace the foam used for spacing fixation.

[0039] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. An aluminum buckle-type fixing structure, characterized in that: It includes a partition plate (1) and a fixing buckle (3) integrally injection molded with the partition plate (1); The isolation plate (1) has an aluminum bar groove (2) for installing the aluminum bar (6), and the fixing buckles (3) are distributed around the aluminum bar groove (2); The fixing buckle (3) includes a buckle base (31), on which an upwardly upright elastic arm (34) is formed. The elastic arm (34) is forked into two groups, and each group of the elastic arm (34) has an anti-detachment protrusion (32) at its top. The aluminum bar (6) has a slot hole (61) through which the elastic arm (34) for fixing the buckle (3) passes and is fixed.

2. The aluminum buckle-type fixing structure according to claim 1, characterized in that: The periphery of the aluminum bar groove (2) is also provided with a baffle (4) integrally injection molded with the isolation plate (1).

3. The aluminum buckle-type fixing structure according to claim 2, characterized in that: A thermal expansion compensation groove (35) is formed between the two sets of elastic arms (34), and the anti-detachment protrusion (32) extends in a direction away from the thermal expansion compensation groove (35).

4. The aluminum buckle-type fixing structure according to claim 3, characterized in that: The top surface of each of the anti-detachment protrusions (32) is a guide slope (33), which slopes downward in a direction away from the thermal expansion compensation groove (35).

5. The aluminum buckle-type fixing structure according to claim 4, characterized in that: The buckle base (31) of the fixed buckle (3) is integrally connected with the isolation plate (1).

6. A CCS component, characterized in that: It includes the aluminum buckle fastening structure as described in any one of claims 1-5.

7. The CCS component according to claim 6, characterized in that: The CCS assembly also includes an FPC (7) and a nickel sheet (5). The FPC (7) is set on the isolation plate (1), and the FPC (7) is welded to the aluminum bar (6) by nickel sheet (5). The aluminum bar (6) is installed in the aluminum bar groove (2) and fixed by the fixing buckle (3).

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