Battery pack module assembly

Abstract

The utility model discloses a battery pack module assembly relates to electric automobile accessory manufacturing technical field, it includes the lower casing assembly for bearing the electric core, has the blister box of electric core positioning hole and covers the cover plate on the top of electric core, the lower casing assembly includes the shell, is equipped with two opposite boundary beams in the shell, the cover plate and the boundary beam are buckled together through buckle subassembly. Compared with prior art, the utility model can solve the problem that the existing battery pack module assembly part is many, and the processing difficulty is big, and the assembly time is long and the production cost is higher.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle parts manufacturing technology, and in particular to a battery pack module assembly. Background Technology

[0002] The battery pack module assembly is a core component of the electric vehicle's power battery system. Existing battery pack module assembly structures include... Figure 1 As shown, the assembly includes a lower housing assembly for supporting the battery cell 101, a blister pack 102 with battery cell positioning holes, and a cover plate 103 covering the top of the battery cell 101. The lower housing assembly includes an outer shell 104, inside which are two opposing end plates 105. The top of the end plates 105 is provided with multiple sets of first mounting holes, each set having two holes. The cover plate 103 has multiple outwardly extending mounting brackets 106 on both sides, each mounting bracket 106 having a second mounting hole corresponding to the first mounting hole, and a steel bushing inside the second mounting hole. During assembly, the blister pack 102 is placed between the two end plates 105 of the lower housing assembly, then the bottom of the battery cell 101 is placed into the battery cell positioning hole of the blister pack 102, then the cover plate 103 is placed over the top of the battery cell 101, and finally bolts 107 are used to fasten the cover plate 103 and the end plates 105 together between the second mounting hole and the first mounting hole. However, this battery pack module assembly structure has the following problems: 1. The end plate and the outer shell are welded together, but the end plate is a complex sheet metal part, with high mold opening costs, many welding processes and long working time, and high part processing difficulty; 2. A large number of bolts and steel bushings are used, resulting in a large number of parts, long assembly time, and high production costs. Utility Model Content

[0003] The purpose of this invention is to provide a battery pack module assembly that can solve the problems of existing battery pack module assemblies having many parts, high processing difficulty, long assembly time, and high production cost.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: This battery pack module assembly includes a lower housing assembly for carrying the battery cells, a blister box with battery cell positioning holes, and a cover plate covering the top of the battery cells. The lower housing assembly includes an outer shell, and the outer shell is provided with two opposing side beams. The cover plate and the side beams are fastened together by a snap-fit ​​assembly.

[0005] A more specific technical solution in the above technical solution may be: the buckle assembly includes a buckle tongue disposed on the upper surface of the side beam and a buckle seat disposed on the side of the cover plate. The buckle tongue includes a base and an elastic arm disposed above the base. The top of the elastic arm is provided with a hook, and the bottom of the buckle seat is provided with a groove corresponding to the hook.

[0006] Furthermore, the bottom of the base is attached to the upper surface of the side beam using structural adhesive.

[0007] Furthermore, an intermediate beam is provided between the two side beams.

[0008] Furthermore, the side beam is made of square tubing.

[0009] Furthermore, the intermediate beam is made of square tubing.

[0010] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0011] This utility model replaces the two end plates in the original battery pack module assembly structure with side beams, avoiding the mold opening costs of complex sheet metal parts and reducing welding time and the difficulty of parts processing; it eliminates the original structure's mounting brackets, steel bushings, and bolts, and uses a snap-fit ​​assembly to fasten the cover plate and side beams together, and the snap-fit ​​tongue is glued to the side beams with structural adhesive, which not only reduces the number of parts, but also makes installation more convenient and faster, shortens assembly time, and reduces production costs. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of an existing battery pack module assembly;

[0013] Figure 2 This is a schematic diagram of the structure of this utility model;

[0014] Figure 3 yes Figure 2 Enlarged view of point I;

[0015] Figure 4 yes Figure 2 Enlarged view of point J. Detailed Implementation

[0016] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model; however, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0017] like Figures 1 to 3 The battery pack module assembly shown includes a lower housing assembly for carrying the battery cell 1, a blister box 2 with battery cell positioning holes, and a cover plate 3 covering the top of the battery cell 1. The lower housing assembly includes an outer shell 4, and two opposing side beams 5 are provided inside the outer shell 4. The cover plate 3 and the side beams 5 are fastened together by a snap-fit ​​assembly.

[0018] The snap-fit ​​assembly includes a snap-fit ​​tongue 6 disposed on the upper surface of the side beam 5 and a snap-fit ​​seat 7 disposed on the side of the cover plate 3. The snap-fit ​​tongue 6 includes a base 6-1 and an elastic arm 6-2 disposed above the base 6-1. The top of the elastic arm 6-2 is provided with a hook 6-3, and the bottom of the snap-fit ​​seat 7 is provided with a groove 7-1 corresponding to the hook 6-3. The bottom of the base 6-1 is attached to the upper surface of the side beam 5 with structural adhesive.

[0019] Both side beams 5 have a latching tongue 6 on their upper surfaces, and the cover plate 3 has a latching seat 7 on its two sides corresponding to the positions of the side beams 5.

[0020] A middle beam 8 is provided between the two side beams 5, and both the side beams 5 and the middle beam 8 are made of square tubing.

[0021] During assembly, the blister box 2 is placed between the side beam 5 and the middle beam 8, the bottom of the battery cell 1 is placed into the battery cell positioning hole of the blister box 2, the cover plate 3 is placed on top of the battery cell 1, and the buckle tongue 6 and buckle seat 7 of the buckle assembly are fastened together.

[0022] This utility model replaces the two end plates in the original battery pack module assembly structure with side beams 5, avoiding the mold opening costs of complex sheet metal parts and reducing welding time and the difficulty of parts processing; it eliminates the original structure's mounting bracket, steel bushing, and bolts, and uses a snap-fit ​​assembly to fasten the cover plate 3 and side beams 5 together, and the snap-fit ​​tongue 6 is glued to the side beams 5 with structural adhesive, which not only reduces the number of parts, but also makes installation more convenient and faster, shortens assembly time, and reduces production costs.

[0023] An intermediate beam 8 is provided between the two side beams 5, and both the side beams 5 and the intermediate beam 8 are made of square tubing to ensure the load-bearing capacity of the lower shell assembly.

Claims

1. A battery pack module assembly, comprising a lower housing assembly for carrying battery cells, a blister pack having battery cell positioning holes, and a cover plate covering the top of the battery cells, wherein the lower housing assembly includes an outer shell, characterized in that: The housing has two opposing side beams, and the cover plate and the side beams are fastened together by a snap-fit ​​assembly.

2. The battery pack module assembly according to claim 1, characterized in that: The buckle assembly includes a buckle tongue disposed on the upper surface of the side beam and a buckle seat disposed on the side of the cover plate. The buckle tongue includes a base and an elastic arm disposed above the base. The top of the elastic arm is provided with a hook, and the bottom of the buckle seat is provided with a groove corresponding to the hook.

3. The battery pack module assembly according to claim 2, characterized in that: The bottom of the base is attached to the upper surface of the side beam with structural adhesive.

4. The battery pack module assembly according to any one of claims 1 to 3, characterized in that: An intermediate beam is provided between the two side beams.

5. The battery pack module assembly according to claim 4, characterized in that: The side beams are made of square tubing.

6. The battery pack module assembly according to claim 5, characterized in that: The intermediate beam is made of square tubing.

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