Assembly and fixing structure of CCS aluminum bar and blister support

Abstract

The utility model belongs to new energy battery module structure technical field, concretely relates to a kind of assembly and fixed structure of CCS aluminum bar and blister support.The assembly and fixed structure include blister support and aluminum bar, and aluminum bar fixed area of uniform distribution is provided on the blister support, and aluminum bar fixed area is provided with two buckles for fixing aluminum bar short side and 1~3 positioning columns, and the positioning hole matched with positioning column is provided on the aluminum bar.The utility model uses the combination fixed structure of buckle and positioning column, compared with the fixing mode of conventional single 4-edge buckle, more easily assembled, and buckle is not prone to damage;Compared with the fixing mode of conventional riveting, without forming reverse buckle structure by hot riveting, can simplify assembly process and reduce cost, with significant cost-reducing and benefit-increasing advantage in industrialization production.

Description

Technical Field

[0001] This utility model belongs to the field of new energy battery module structure technology, specifically relating to an assembly and fixing structure of a CCS aluminum bus and a vacuum forming bracket. Background Technology

[0002] A Cell Contact System (CCS) is a structural component that integrates voltage / temperature acquisition, overcurrent protection, cell electrical connection, and structural support. A common assembly method for CCS is to use a vacuum-formed bracket to fix the conductive lines connected to the aluminum bus. Traditionally, the assembly of the CCS aluminum bus and the vacuum-formed bracket primarily employs hot pressing or hot riveting processes. In hot-riveted CCS, the rivets on the vacuum-formed bracket mate with the positioning holes on the aluminum bus, and the two are riveted together using hot riveting equipment. While this process is robust, it has the following drawbacks:

[0003] 1. Specialized hot riveting equipment is required, increasing production costs;

[0004] 2. Requires additional hot riveting process and manual operation, resulting in lower efficiency;

[0005] 3. The process is highly complex, which is not conducive to large-scale production.

[0006] To address the aforementioned issues, some manufacturers employ a snap-fit ​​method to secure the aluminum busbar. This involves installing clips on all four sides of the bracket cavity, allowing for fixation by pressing the busbar. However, existing snap-fit ​​methods have the following drawbacks:

[0007] 1. There are many clips (usually 4), which require a lot of force to assemble and are easily damaged;

[0008] 2. Aluminum bars are prone to slight displacement, resulting in low positioning accuracy;

[0009] 3. Insufficient ease of assembly and reliability.

[0010] Patent CN 119890599A discloses a battery pack CCS assembly and its assembly method. Multiple connecting posts are set on a blister pack bracket, which cooperate with conductive aluminum bars to form an inverted structure for better fixation of the aluminum bars. However, the connecting posts still require a hot riveting process to form the inverted fixing structure, necessitating additional hot riveting steps and manual operation.

[0011] Therefore, there is an urgent need for a CCS aluminum bar fixing solution that can simplify the process, reduce costs, and improve assembly accuracy and reliability. Utility Model Content

[0012] In view of the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an assembly and fixing structure for CCS aluminum busbar and blister bracket.

[0013] The objective of this utility model is achieved through the following technical solution:

[0014] An assembly and fixing structure for a CCS aluminum bar and a blister bracket includes a blister bracket and an aluminum bar. The blister bracket has a uniformly distributed aluminum bar fixing area. The aluminum bar fixing area has two buckles for fixing the short side of the aluminum bar and 1 to 3 positioning posts. The aluminum bar has positioning holes that cooperate with the positioning posts.

[0015] Furthermore, the aluminum bar fixing area is also provided with a buckle for fixing any long side of the aluminum bar. By adding a buckle for fixing any long side of the aluminum bar, the stability of the aluminum bar can be improved without significantly increasing the assembly difficulty.

[0016] The short side and long side mentioned in this utility model refer to a pair of short sides that are far apart and a pair of long sides that are close together in a conventional rectangular aluminum bar; when the side lengths of the rectangular aluminum bar are the same, the short side can be any two sides that are arranged opposite each other.

[0017] Furthermore, the length of the buckle is 1 / 5 to 3 / 5 of the side length of the aluminum bar. Within this length range, the aluminum bar can be fixed well, while also being easy to assemble.

[0018] Furthermore, the thickness of the buckle is 2-6mm. Within this thickness range, it possesses good strength and snap-fit ​​stability.

[0019] Furthermore, the thickness of the aluminum bar is 1 to 6 mm.

[0020] Furthermore, the draft angle of the buckle is 20-45° (the inclination angle between the top and bottom of the buckle), and the buckle height is 0.5-2mm higher than the thickness of the aluminum bar. Under the above parameter conditions, the aluminum bar can be fixed well, and it is easy to assemble.

[0021] Furthermore, the height of the positioning post is 2-7mm.

[0022] Furthermore, the fitting clearance between the positioning pin and the positioning hole is 0.05-0.2 mm. Under the above fitting clearance conditions and with the use of the snap-fit, the aluminum bar can be positioned well and is easy to assemble.

[0023] Furthermore, the material of the blister bracket is PVC, PET, PETG, PC, PA66 or PBT; the buckle and positioning post are formed by integral injection molding.

[0024] The assembly and fixing structure assembly process using this utility model is as follows:

[0025] 1. Align the aluminum foil with the cavity of the vacuum forming bracket and press the edge to make it snap into the clip;

[0026] 2. Precise positioning is achieved through the cooperation of the positioning pin and the positioning hole.

[0027] The structural design principle of this utility model is as follows: the combination of buckles and positioning posts is used to fix the structure, which is easier to assemble and less likely to damage the buckles compared to the conventional method of fixing with four buckles alone; compared to the conventional riveting method, there is no need to form an inverted structure through hot riveting, which simplifies the assembly process and reduces costs.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] (1) Reduce costs: Eliminate hot riveting equipment and processes, and reduce labor input.

[0030] (2) Improve efficiency: No hot riveting is required during the assembly process, simplifying the process flow.

[0031] (3) Improved accuracy: The positioning is achieved by the tight fit between the positioning pin and the positioning hole, and the fastener is used to fix the aluminum bar to prevent displacement.

[0032] (4) Enhance reliability: Optimize the number of clips and draft angle to reduce assembly difficulty and the risk of clip damage. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the thermoforming bracket in Example 1.

[0034] Figure 2 This is a schematic diagram of the series aluminum bar structure in Example 1.

[0035] Figure 3 This is a schematic diagram of the output electrode aluminum bar in Example 1.

[0036] Figure 4 This is a schematic diagram of the structure after the blister bracket and aluminum bar are assembled in Example 1. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0038] Example 1

[0039] An assembly and fixing structure for a CCS series aluminum bus and a vacuum forming bracket is shown in the schematic diagram below. Figures 1-4As shown, it includes a vacuum forming bracket 1 and aluminum bars (including a middle series aluminum bar 2-1 and two output electrode aluminum bars 2-2 at both ends). The vacuum forming bracket 1 is provided with evenly distributed aluminum bar fixing areas (including a middle series aluminum bar fixing area 3-1 and two output electrode aluminum bar fixing areas 3-2 at both ends). The aluminum bar fixing area 3-1 is provided with two clips 4 for fixing the short side of the aluminum bar, one clip 5 for fixing the long side of the aluminum bar, and one positioning post 6. The aluminum bar fixing area 3-2 is provided with two clips 4 for fixing the short side of the aluminum bar, one clip 5 for fixing the long side of the aluminum bar, and three positioning posts 6. The aluminum bar is provided with positioning holes 7 that cooperate with the positioning posts.

[0040] The length of the buckle can be set to 1 / 5 to 3 / 5 of the side length of the aluminum bar. Within this length range, the aluminum bar can be fixed well, while also being easy to assemble.

[0041] The thickness of the buckle can be set to 2-6mm. Within this thickness range, it exhibits good strength and snap-fit ​​stability.

[0042] The thickness of the aluminum bar can be set to 1-6 mm.

[0043] The draft angle of the buckle can be set to 20-45° (the inclination angle between the top and bottom of the buckle), and the buckle height is 0.5-2mm higher than the thickness of the aluminum bar. Under the above parameter conditions, the aluminum bar can be fixed well, and it is easy to assemble.

[0044] The height of the positioning post can be set to 2-7mm.

[0045] The clearance between the positioning pin and the positioning hole can be set to 0.05-0.2mm. Under the above clearance conditions and with the use of the snap-fit, the aluminum bar can be positioned well and is easy to assemble.

[0046] The material of the blister bracket can be selected as PVC, PET, PETG, PC, PA66 or PBT; the buckle and positioning post are formed by integral injection molding.

[0047] Example 2

[0048] A CCS series aluminum bar and blister bracket assembly and fixing structure, compared with embodiment 1, the series aluminum bar 2-1 and the output pole aluminum bar 2-2 adopt a fixing combination of two buckles 4 for fixing the short side of the aluminum bar and one positioning post 6.

[0049] The assembly and fixing structure assembly process using this embodiment is as follows:

[0050] 1. Align the aluminum bar with the cavity of the vacuum forming bracket and press the edge to make it snap into the buckle 4;

[0051] 2. Precise positioning is achieved by the cooperation of the positioning pin 6 and the positioning hole 7 on the aluminum bar.

[0052] After assembly using the fixing structure of this embodiment, the aluminum bar shows no displacement and the clips remain undamaged.

[0053] Example 3

[0054] A CCS series aluminum bar and blister bracket assembly and fixing structure, compared with embodiment 1, the series aluminum bar 2-1 and the output pole aluminum bar 2-2 adopt a fixing combination of two buckles 4 for fixing the short side of the aluminum bar, one buckle 5 for fixing the long side of the aluminum bar and two positioning posts 6.

[0055] The assembly and fixing structure assembly process using this embodiment is as follows:

[0056] 1. Align the aluminum bar with the cavity of the vacuum forming bracket and press the edge to make it snap into clips 4 and 5;

[0057] 2. Precise positioning is achieved by the cooperation of the positioning pin 6 and the positioning hole 7 on the aluminum bar.

[0058] Compared with conventional hot riveting, the fixing structure of this embodiment improves assembly efficiency by 30% and reduces costs by 20%.

[0059] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. An assembly and fixing structure for a CCS aluminum bus and a blister pack, characterized in that, It includes a blister packer and an aluminum bar. The blister packer has evenly distributed aluminum bar fixing areas. The aluminum bar fixing areas have two buckles for fixing the short side of the aluminum bar and 1 to 3 positioning posts. The aluminum bar has positioning holes that cooperate with the positioning posts.

2. The assembly and fixing structure of CCS aluminum bus and blister pack as described in claim 1, characterized in that, The aluminum bar fixing area is also provided with a buckle for fixing any long side of the aluminum bar.

3. The assembly and fixing structure of CCS aluminum bus and blister bracket according to claim 1, characterized in that, The length of the buckle is 1 / 5 to 3 / 5 of the side length of the fixed aluminum bar.

4. The assembly and fixing structure of CCS aluminum bus and blister pack as described in claim 1, characterized in that, The thickness of the buckle is 2-6mm.

5. The assembly and fixing structure of CCS aluminum bus and blister pack as described in claim 1, characterized in that, The thickness of the aluminum bar is 1 to 6 mm.

6. The assembly and fixing structure of CCS aluminum bus and blister pack according to claim 5, characterized in that, The draft angle of the buckle is 20-45°, and the buckle height is 0.5-2mm higher than the thickness of the aluminum foil.

7. The assembly and fixing structure of CCS aluminum bus and blister bracket according to claim 1, characterized in that, The height of the positioning post is 2-7mm.

8. The assembly and fixing structure of CCS aluminum bus and blister pack according to claim 1, characterized in that, The clearance between the positioning pin and the positioning hole is 0.05-0.2mm.

9. The assembly and fixing structure of CCS aluminum bus and blister pack according to any one of claims 1 to 8, characterized in that, The vacuum forming bracket is made of PVC, PET, PETG, PC, PA66 or PBT; the buckle and positioning post are formed by integral injection molding.

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