A battery pack module structure

Abstract

This application discloses a battery pack module structure, including a housing; the housing includes a first side plate, a second side plate, a first end plate, a second end plate, and a bottom plate; the first side plate and the second side plate are respectively disposed on both sides of the bottom plate, and the first end plate and the second end plate are respectively disposed at both ends of the bottom plate; the first end plate has symmetrically arranged bending surfaces on both sides; the first side plate is abutted and connected to the first end plate through one of the bending surfaces of the first end plate, and the second side plate is abutted and connected to the first end plate through the other bending surface of the first end plate; the second end plate is abutted and connected to both the first side plate and the second side plate. With this structure, the connection between the end plate and the side plate is fixed on the outside of the housing, effectively saving internal space and improving the mechanical strength of the end plate and the overall robustness and stability of the battery pack module.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and in particular relates to a battery pack module structure. Background Technology

[0002] Lithium-ion batteries are rechargeable batteries that operate on the principle of lithium-ion intercalation / deintercalation reactions. They feature high energy density, long cycle life, and lightweight design, and are widely used in consumer electronics, electric vehicles, and energy storage. Most existing battery packs use aluminum alloy end plates combined with steel strips for fixing. This assembly process requires fixtures, making it complex and prone to short circuits due to contact between the steel strip and the battery. Furthermore, the steel strip is susceptible to detachment, resulting in poor assembly stability and significant safety hazards, making it difficult to meet practical application needs. Utility Model Content

[0003] This utility model provides a battery pack module structure, which aims to effectively solve the problems of existing PACK battery packs, such as the need for jigs for assembly, insecure assembly, poor stability, easy detachment of steel strips, and the risk of short circuit between steel strips and batteries.

[0004] To solve the above technical problems, this utility model provides a battery pack module structure, including a housing; the housing includes a first side plate, a second side plate, a first end plate, a second end plate, and a bottom plate; the first side plate and the second side plate are respectively disposed on both sides of the bottom plate, and the first end plate and the second end plate are respectively disposed at both ends of the bottom plate; the first end plate has symmetrically arranged bending surfaces on both sides; the first side plate is abutted and connected to the first end plate through one of the bending surfaces of the first end plate, and the second side plate is abutted and connected to the first end plate through the other bending surface of the first end plate; the second end plate is abutted and connected to the first side plate and the second side plate respectively.

[0005] In a preferred embodiment, the bending surface of the first end plate includes a first bending strip, a second bending strip, and a third bending strip integrally formed; the first bending strip, the second bending strip, and the third bending strip are arranged in a U-shape; the second bending strip is connected to the first bending strip and the third bending strip respectively.

[0006] In a preferred embodiment, the first bending strip and the third bending strip are respectively disposed in contact with the first end plate; and the first bending strip and the third bending strip are disposed parallel to each other; the first bending strip is connected to the first side plate / the second side plate.

[0007] In a preferred embodiment, the first bending strip and the second bending strip, as well as the second bending strip and the third bending strip, are connected by a first bending strip.

[0008] In a preferred embodiment, the first end plate and the second end plate are symmetrically arranged; the first side plate and the second side plate are symmetrically arranged.

[0009] In a preferred embodiment, the second end plate is provided with symmetrically arranged second end plate bending surfaces on both sides; the first side plate is abutted and connected to the second end plate through one of the second end plate bending surfaces, and the second side plate is abutted and connected to the second end plate through the other second end plate bending surface.

[0010] In a preferred embodiment, the second end plate bending surface includes a fourth bending strip, a fifth bending strip, and a sixth bending strip integrally formed; the fourth bending strip, the fifth bending strip, and the sixth bending strip are arranged in a U-shape; the fifth bending strip is connected to the fourth bending strip and the sixth bending strip respectively.

[0011] In a preferred embodiment, the fourth bending strip and the sixth bending strip are respectively abutted against the second end plate; and the fourth bending strip and the sixth bending strip are arranged parallel to each other; the fourth bending strip is connected to the first side plate / the second side plate.

[0012] In a preferred embodiment, the fourth bending strip and the fifth bending strip, as well as the fifth bending strip and the sixth bending strip, are connected by a second bending strip.

[0013] In a preferred embodiment, the bending surfaces of the first end plate and the second end plate are symmetrically arranged; the bending surfaces of the first end plate are adapted to the first side plate and the second side plate respectively; and the bending surfaces of the second end plate are adapted to the first side plate and the second side plate respectively.

[0014] In a preferred embodiment, the battery pack module structure further includes a battery cell and a top cover; the battery cell is disposed inside the housing; the top cover is closed on the top of the housing, and the top cover is respectively abutted against the first end plate, the second end plate, the first side plate and the second side plate.

[0015] In a preferred embodiment, both the outer side of the first end plate near the top cover and the outer side of the second end plate near the top cover are provided with inverted hooks; the two inverted hooks are arranged symmetrically.

[0016] In a preferred embodiment, a heating film is provided between the first side plate and the battery cell, and between the second side plate and the battery cell.

[0017] In a preferred embodiment, the battery cell includes a plurality of battery cell units arranged in parallel; the base plate includes a plurality of base plate units arranged in parallel, the battery cell units are disposed within the base plate units, and the battery cell units and the base plate units are arranged in a one-to-one correspondence.

[0018] Compared with the prior art, the technical solution of this utility model embodiment has the following beneficial effects: The structure of this application provides bending surfaces on the outer sides of the end plate on both sides, and bends these bending surfaces into a U-shape, so that the connection between the end plate and the side plate is fixed on the outside of the housing. This effectively saves internal space in the housing. While effectively reducing the space of the connection structure between the end plate and the side plate within the battery pack, it effectively improves the mechanical strength of the end plate and the robustness and stability of the entire battery pack module. This application achieves module assembly and fixation through riveting nuts and screws, which is easy to implement, convenient to assemble and disassemble, easy to maintain, and has good stability. Furthermore, it does not require large-scale modifications to the overall battery structure, thus well meeting the needs of practical use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a battery pack module according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 An exploded view of the battery pack module structure;

[0022] Figure 3 for Figure 1 A partial exploded structural diagram of the container;

[0023] Figure 4 for Figure 3 A schematic diagram of the structure of the second end plate.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0026] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] Specifically, such as Figures 1 to 4 As shown, this utility model embodiment provides a battery pack module structure, including a housing 10; the housing 10 includes a first side plate 11, a second side plate 12, a first end plate 13, a second end plate 14, and a bottom plate 15; the first side plate 11 and the second side plate 12 are respectively disposed on both sides of the bottom plate 15, and the first end plate 13 and the second end plate 14 are respectively disposed at both ends of the bottom plate 15; the first end plate 13 has symmetrically arranged first end plate bending surfaces 131 on both sides; the first side plate 11 is abutted and connected to the first end plate 13 through one of the first end plate bending surfaces 131, and the second side plate 12 is abutted and connected to the first end plate 13 through the other first end plate bending surface 131; the second end plate 14 is abutted and connected to the first side plate 11 and the second side plate 12 respectively.

[0028] In a preferred embodiment, the first end plate bending surface 131 includes a first bending strip 1311, a second bending strip 1312, and a third bending strip 1313 integrally formed; the first bending strip 1311, the second bending strip 1312, and the third bending strip 1313 are arranged in a U-shape; the second bending strip 1312 is connected to the first bending strip 1311 and the third bending strip 1313 respectively.

[0029] In a preferred embodiment, the first bending strip 1311 and the third bending strip 1313 are respectively abutted against the first end plate 13; and the first bending strip 1311 and the third bending strip 1313 are arranged parallel to each other; the first bending strip 1311 is connected to the first side plate 11 / the second side plate 12.

[0030] In a preferred embodiment, the first bending strip 1311 and the second bending strip 1312, and the second bending strip 1312 and the third bending strip 1313 are both connected by the first bending strip A.

[0031] In a preferred embodiment, the first end plate 13 and the second end plate 14 are symmetrically arranged; the first side plate 11 and the second side plate 12 are symmetrically arranged.

[0032] In a preferred embodiment, the second end plate 14 is provided with symmetrical second end plate bending surfaces 141 on both sides; the first side plate 11 is abutted and connected to the second end plate 14 through one of the second end plate bending surfaces 141, and the second side plate 12 is abutted and connected to the second end plate 14 through the other second end plate bending surface 141.

[0033] In a preferred embodiment, the second end plate bending surface 141 includes a fourth bending strip 1411, a fifth bending strip 1412, and a sixth bending strip 1413 integrally formed; the fourth bending strip 1411, the fifth bending strip 1412, and the sixth bending strip 1413 are arranged in a U-shape; the fifth bending strip 1412 is connected to the fourth bending strip 1411 and the sixth bending strip 1413 respectively.

[0034] In a preferred embodiment, the fourth bending strip 1411 and the sixth bending strip 1413 are respectively abutted against the second end plate 14; and the fourth bending strip 1411 and the sixth bending strip 1413 are arranged parallel to each other; the fourth bending strip 1411 is connected to the first side plate 11 / the second side plate 12.

[0035] In a preferred embodiment, the fourth bending strip 1411 and the fifth bending strip 1412, and the fifth bending strip 1412 and the sixth bending strip 1413 are connected by the second bending strip B.

[0036] In a preferred embodiment, the first end plate bending surface 131 and the second end plate bending surface 141 are symmetrically arranged; the first end plate bending surface 131 is adapted to the first side plate 11 and the second side plate 12 respectively; the second end plate bending surface 141 is adapted to the first side plate 11 and the second side plate 12 respectively.

[0037] In a preferred embodiment, the battery pack module structure further includes a battery cell 20 and a top cover 30; the battery cell 20 is disposed inside the housing 10; the top cover 30 covers the top of the housing 10, and the top cover 30 abuts against the first end plate 13, the second end plate 14, the first side plate 11 and the second side plate 12 respectively.

[0038] In a preferred embodiment, the outer side of the first end plate 13 near the end of the upper cover 30 and the outer side of the second end plate 14 near the end of the upper cover 30 are both provided with inverted hooks C; the two inverted hooks C are arranged symmetrically.

[0039] In a preferred embodiment, a heating film 40 is provided between the first side plate 11 and the battery cell 20, and between the second side plate 12 and the battery cell 20.

[0040] In a preferred embodiment, the battery cell 20 includes a plurality of battery cell units 21 arranged in parallel; the base plate 15 includes a plurality of base plate units 151 arranged in parallel, the battery cell units 21 are disposed in the base plate units 151, and the battery cell units 21 and the base plate units 151 are arranged in a one-to-one correspondence.

[0041] In this embodiment, the first end plate 13 and the second end plate 14 are both alloy end plates, the upper cover is a plastic upper cover, and the bottom plate is a plastic bottom plate.

[0042] This application's structure features bent end plates on their outer sides, forming a U-shape. This allows the connection between the end plate and side plate to be fixed on the outside of the housing, effectively saving internal space. While minimizing the space required for the end plate and side plate connection within the battery pack, it also significantly improves the mechanical strength of the end plate and the overall robustness and stability of the battery pack module. The module can be assembled and fixed using rivets and screws, making it easy to implement, disassemble, and maintain, with good stability. Furthermore, it requires no major modifications to the overall battery structure, thus well meeting the needs of practical applications.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery pack module structure, characterized in that, The enclosure includes a housing; the housing includes a first side plate, a second side plate, a first end plate, a second end plate, and a bottom plate; the first side plate and the second side plate are respectively disposed on both sides of the bottom plate, and the first end plate and the second end plate are respectively disposed at both ends of the bottom plate; the first end plate has symmetrically arranged bending surfaces on both sides; the first side plate is abutted and connected to the first end plate through one of the bending surfaces of the first end plate, and the second side plate is abutted and connected to the first end plate through the other bending surface of the first end plate; the second end plate is abutted and connected to both the first side plate and the second side plate.

2. The battery pack module structure according to claim 1, characterized in that, The first end plate bending surface includes a first bending strip, a second bending strip, and a third bending strip integrally formed; the first bending strip, the second bending strip, and the third bending strip are arranged in a U-shape; the second bending strip is connected to the first bending strip and the third bending strip respectively.

3. The battery pack module structure according to claim 2, characterized in that, The first bending strip and the third bending strip are respectively abutted against the first end plate; and the first bending strip and the third bending strip are arranged parallel to each other; the first bending strip is connected to the first side plate / the second side plate.

4. The battery pack module structure according to claim 2, characterized in that, The first bending strip and the second bending strip, as well as the second bending strip and the third bending strip, are connected by the first bending strip.

5. The battery pack module structure according to claim 1, characterized in that, The first end plate and the second end plate are symmetrically arranged; the first side plate and the second side plate are symmetrically arranged.

6. The battery pack module structure according to claim 2, characterized in that, The second end plate has symmetrically arranged bending surfaces on both sides; the first side plate is connected to the second end plate through one of the bending surfaces of the second end plate, and the second side plate is connected to the second end plate through the other bending surface of the second end plate.

7. The battery pack module structure according to claim 6, characterized in that, The second end plate bending surface includes a fourth bending strip, a fifth bending strip, and a sixth bending strip integrally formed; the fourth bending strip, the fifth bending strip, and the sixth bending strip are arranged in a U-shape; the fifth bending strip is connected to the fourth bending strip and the sixth bending strip respectively.

8. The battery pack module structure according to claim 7, characterized in that, The fourth and sixth bending strips are respectively abutted against the second end plate; and the fourth and sixth bending strips are arranged parallel to each other; the fourth bending strip is connected to the first side plate / second side plate.

9. The battery pack module structure according to claim 7, characterized in that, The fourth bending strip and the fifth bending strip, as well as the fifth bending strip and the sixth bending strip, are connected by the second bending strip; The bending surfaces of the first end plate and the second end plate are symmetrically arranged; the bending surfaces of the first end plate are adapted to the first side plate and the second side plate respectively; the bending surfaces of the second end plate are adapted to the first side plate and the second side plate respectively.

10. The battery pack module structure according to claim 1, characterized in that, The battery pack module structure also includes a battery cell and a top cover; the battery cell is disposed inside the housing; the top cover is closed on the top of the housing, and the top cover is respectively abutted against the first end plate, the second end plate, the first side plate and the second side plate; The outer side of the first end plate near the top cover and the outer side of the second end plate near the top cover are both provided with inverted hooks; the two inverted hooks are arranged symmetrically. A heating film is provided between the first side plate and the battery cell, and between the second side plate and the battery cell; The battery cell includes multiple individual battery cells arranged in parallel; the base plate includes multiple base plate units arranged in parallel, the individual battery cells are disposed within the base plate units, and the individual battery cells and the base plate units are arranged in a one-to-one correspondence.

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