Battery soft package module structure

Abstract

The utility model provides a battery soft package module structure which comprises a plurality of plastic supports, one end of each plastic support is fixedly connected with a first battery cell and a second battery cell, one end of each plastic support is fixedly connected with a plurality of assembly screws, and assembly nuts are fixedly connected below the assembly screws. The two ends of the first battery cell and the two ends of the second battery cell are connected with a positive lug plate and a negative lug plate respectively, one end of the negative lug plate on one side is fixedly connected to the plastic support, one end of the positive lug plate is fixedly connected to the negative lug plate, and the other end of the positive lug plate is fixedly connected with a copper bar. A plurality of bracket connecting grooves are formed in one side of the plastic bracket; the first battery cell and the second battery cell are installed in the mode that one battery cell is clamped by the two plastic supports, the assembling screws are inserted into the holes in the four corners of the multiple plastic supports for assembling, safety is improved, the battery cells can be replaced only by disassembling the screws when needing to be replaced, and replacement is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of soft-pack battery modules, in particular to a battery soft-pack module structure. Background Art

[0002] Soft-pack batteries, also known as polymer lithium batteries or aluminum-plastic film batteries, are a type of liquid lithium-ion battery. Their basic structure is similar to that of cylindrical and square batteries, but the biggest difference is that soft-pack batteries use aluminum-plastic composite film as the shell material. They have the advantages of high energy density, high design flexibility, good safety and long cycle life. When in use, multiple soft-pack batteries are often connected and combined into a battery soft-pack module for use together. The common practice is to fix them with glue and welding, but this method is very troublesome when repairing the battery module and replacing the soft-pack battery cells later.

[0003] After searching, the Chinese patent publication number CN210092189U discloses a soft-pack battery module injection structure, including a module frame, a module fixing part, and a module insulating component. The module frame is provided with a battery cell placement groove, the module fixing part is fixed at both ends of the module frame, and the module insulating part is arranged at both ends of the module frame and is located on the inner side of the module fixing part.

[0004] In view of the problem that the method of using glue injection to reinforce the battery cell in the above-mentioned technology is very inconvenient when maintaining and replacing the battery cell, a battery soft pack module structure is proposed. Utility Model Content

[0005] In view of this, the embodiments of the present invention hope to provide a battery soft pack module structure to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0006] The technical solution of the embodiment of the utility model is achieved as follows: it includes multiple plastic brackets, one end of the plastic bracket is fixedly connected to battery cell one and battery cell two, one end of the plastic bracket is fixedly connected to multiple assembly screws, an assembly nut is fixedly connected below the assembly screw, both ends of battery cell one and battery cell two are respectively connected to a positive ear plate and a negative ear plate, one end of the negative ear plate on one side is fixedly connected to the plastic bracket, one end of the positive ear plate is fixedly connected to the negative ear plate, and the other end of the positive ear plate is fixedly connected to a copper bus.

[0007] In some embodiments, one end of the plastic bracket is fixedly connected to a plurality of bracket docking platforms, and one side of the plastic bracket is provided with a plurality of bracket connecting grooves.

[0008] In some embodiments, a battery cell fixing platform is fixedly connected inside the plastic bracket, and one end of battery cell 1 and battery cell 2 is fixedly connected to a battery cell side plate.

[0009] In some embodiments, one side of the battery cell 1 and the battery cell 2 is fixedly connected with an electrode mark, and one end of the positive electrode ear plate and the negative electrode ear plate is bent to form an electrode plate fixing groove.

[0010] In some embodiments, a nut mounting groove is formed at one end of the plastic bracket, and an embedded nut is fixedly connected inside the nut mounting groove.

[0011] In some embodiments, an electrode plate fixing hole is opened at one end of the positive ear plate and the negative ear plate, a copper bar mounting hole is opened at one end of the copper bar, and a mounting bolt is threadedly connected to one end of the embedded nut.

[0012] In some embodiments, electrode plate mounting grooves and copper busbar mounting grooves are formed at both ends of the plastic bracket.

[0013] In some embodiments, one end of the plastic bracket is fixedly connected to a copper bar limiting rod, one end of the copper bar is provided with a copper bar positioning hole, and one end of the copper bar positioning hole is fixedly connected to the copper bar limiting rod.

[0014] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0015] 1. A battery soft pack module structure, in which battery cell one and battery cell two are installed by clamping a battery cell with two plastic brackets, and assembly screws are inserted into openings at the four corners of multiple plastic brackets for assembly, thereby improving safety. When the battery cell needs to be replaced, it can be replaced by simply removing the screws, which is more convenient and quick.

[0016] 2. A battery soft package module structure, in which the copper bus, the positive ear plate and the negative ear plate are fixed by installing bolts and embedded nuts, and the battery cell 1 and the battery cell 2 are fixed in a plastic frame, and the installing bolts will not shake.

[0017] 3. A battery soft pack module structure, which can fix and limit the copper busbar during installation through a copper busbar limiting rod to prevent shaking from affecting the insertion of the installation bolts and improve assembly efficiency.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is the main structural diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the battery cell structure of the utility model;

[0022] Figure 3 This is a structural diagram of the plastic bracket of the utility model;

[0023] Figure 4 It is an exploded structural diagram of the upper side of the utility model;

[0024] Figure 5 It is the exploded structural diagram of the lower side of the utility model;

[0025] Figure 6 This is a cross-sectional structural diagram of the battery cell installation of the utility model.

[0026] Reference numerals:

[0027] 1. Plastic bracket; 2. Battery cell one; 3. Assembly screw; 4. Positive ear plate; 5. Negative ear plate; 6. Electrode plate fixing slot; 7. Electrode plate fixing hole; 8. Electrode identification; 9. Battery cell fixing platform; 10. Electrode plate mounting slot; 11. Copper busbar mounting slot; 12. Nut mounting slot; 13. Bracket connection slot; 14. Bracket docking platform; 15. Embedded nut; 16. Copper busbar limiting rod; 17. Copper busbar; 18. Mounting bolt; 19. Copper busbar positioning hole; 20. Copper busbar mounting hole; 21. Assembly nut; 22. Battery cell two; 23. Battery cell side panel. DETAILED DESCRIPTION

[0028] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0029] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0030] Embodiment 1:

[0031] like Figure 1-6As shown, a battery soft package module structure includes a plurality of plastic brackets 1, one end of the plastic bracket 1 is fixedly connected to a battery cell 1 2 and a battery cell 2 22, one end of the plastic bracket 1 is fixedly connected to a plurality of assembly screws 3, an assembly nut 21 is fixedly connected below the assembly screw 3, and both ends of the battery cell 1 2 and the battery cell 2 22 are respectively connected to a positive ear plate 4 and a negative ear plate 5, one end of the negative ear plate 5 is fixedly connected to the plastic bracket 1, one end of the positive ear plate 4 is fixedly connected to the negative ear plate 5, and the other end of the positive ear plate 4 is fixedly connected to a copper bus 17;

[0032] During installation, the battery cell 1 2 and the battery cell 2 22 are installed by clamping one battery cell between two plastic brackets 1. The battery cell 1 2 and the battery cell 2 22 are installed alternately. The positive ear plate 4 of the battery cell 1 2 and the negative ear plate 5 of the battery cell 2 22 are fitted together, and then the positive ear plate 4 and the negative ear plate 5 are fixed to the plastic bracket 1 through the copper bus 17. Subsequently, the assembly screw 3 is inserted into the openings at the four corners of the multiple plastic brackets 1 and fixed through the assembly nut 21. The assembly screw 3 and the assembly nut 21 are both customized models. At this time, the assembly screw 3 and the multiple plastic brackets 1 form a rigid structure, which can protect the internal battery cells from impact and bending damage, thereby improving safety. When the battery cells need to be replaced, they can be replaced by simply removing the screws, which is more convenient and quick.

[0033] In this embodiment, one end of the plastic bracket 1 is fixedly connected to multiple bracket docking platforms 14, and one side of the plastic bracket 1 is provided with multiple bracket connecting grooves 13. The bracket docking platform 14 can be inserted into the bracket connecting groove 13 of the lower plastic bracket 1 to fix the multiple plastic brackets 1 to each other, and the assembly screw 3 passes through the bracket docking platform 14 and the slot in the bracket connecting groove 13 for fixing.

[0034] In this embodiment, the plastic bracket 1 is fixedly connected to a battery cell fixing platform 9, and one end of the battery cell 1 2 and the battery cell 2 22 is fixedly connected to a battery cell side plate 23. The battery cell fixing platform 9 can cooperate with the battery cell edge and the battery cell side plate 23 to fix the battery cell body to prevent shaking.

[0035] In this embodiment, an electrode marker 8 is fixedly connected to one side of the battery cell 1 2 and the battery cell 2 22, and an electrode plate fixing groove 6 is bent at one end of the positive ear plate 4 and the negative ear plate 5. The electrode marker 8 can confirm the electrode direction during installation to prevent reverse installation.

[0036] In this embodiment, a nut mounting groove 12 is formed at one end of the plastic bracket 1, an embedded nut 15 is fixedly connected inside the nut mounting groove 12, an electrode plate fixing hole 7 is formed at one end of the positive ear plate 4 and the negative ear plate 5, a copper bar mounting hole 20 is formed at one end of the copper bar 17, and a mounting bolt 18 is threadedly connected at one end of the embedded nut 15;

[0037] The copper busbar 17 , the positive electrode ear plate 4 and the negative electrode ear plate 5 are fixed by installing bolts 18 and embedded nuts 15 . At the same time, because the battery cell 1 2 and the battery cell 2 22 are fixed in the plastic frame 1 , the installing bolts 18 will not shake.

[0038] In this embodiment, the two ends of the plastic bracket 1 are provided with an electrode plate mounting groove 10 and a copper bar mounting groove 11;

[0039] The electrode plate mounting groove 10 is used to fix the electrode plate fixing groove 6 at one end of the positive electrode ear plate 4 and the negative electrode ear plate 5;

[0040] The copper busbar installation groove 11 is used for installing the copper busbar 17 .

[0041] In this embodiment: during installation, the battery cell 1 2 and the battery cell 2 22 are installed by clamping one battery cell with two plastic brackets 1, and the battery cell 1 2 and the battery cell 2 22 are installed alternately, and the positive ear plate 4 of the battery cell 1 2 and the negative ear plate 5 of the battery cell 2 22 are fitted, and then the positive ear plate 4 and the negative ear plate 5 are fixed to the plastic bracket 1 through the copper bus 17, and then the assembly screw 3 is inserted into the openings at the four corners of the multiple plastic brackets 1, and fixed by the assembly nut 21, the assembly screw 3 and the assembly nut 21 are both customized models, and at this time, the assembly screw 3 and the multiple plastic brackets 1 form a rigid structure, which can protect the internal battery cells from impact and bending damage, improve safety, and when the battery cells need to be replaced, only the screw needs to be disassembled for replacement, which is more convenient and quick;

[0042] The bracket docking platform 14 can be inserted into the bracket connecting groove 13 of the lower plastic bracket 1 to fix the multiple plastic brackets 1 to each other, and the assembly screw 3 passes through the bracket docking platform 14 and the slot in the bracket connecting groove 13 for fixing;

[0043] The battery cell fixing platform 9 can cooperate with the battery cell edge and the battery cell side plate 23 to fix the battery cell body to prevent shaking;

[0044] The electrode identification 8 can confirm the electrode orientation during installation to prevent reverse installation. The copper bus 17, the positive electrode ear plate 4 and the negative electrode ear plate 5 are fixed by the mounting bolts 18 and the embedded nuts 15. At the same time, because the battery cell 1 2 and the battery cell 2 22 are fixed in the plastic frame 1, the mounting bolts 18 will not shake.

[0045] The electrode plate mounting groove 10 is used to fix the electrode plate fixing groove 6 at one end of the positive electrode ear plate 4 and the negative electrode ear plate 5;

[0046] The copper busbar installation groove 11 is used for installing the copper busbar 17 .

[0047] Embodiment 2:

[0048] A battery soft pack module structure, this embodiment makes the following improvements on the basis of embodiment 1, such as Figure 1-6 As shown,

[0049] In this embodiment, one end of the plastic bracket 1 is fixedly connected to a copper bar limiting rod 16, one end of the copper bar 17 is provided with a copper bar positioning hole 19, and one end of the copper bar positioning hole 19 is fixedly connected to the copper bar limiting rod 16;

[0050] The copper bar limiting rod 16 can fix and limit the copper bar 17 when installing the copper bar 17 to prevent shaking from affecting the insertion of the installation bolts 18, thereby improving assembly efficiency.

[0051] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A battery soft pack module structure, comprising a plurality of plastic brackets (1), characterized in that: One end of the plastic support (1) is fixedly connected to a battery cell 1 (2) and a battery cell 2 (22); one end of the plastic support (1) is fixedly connected to a plurality of assembly screws (3); an assembly nut (21) is fixedly connected below the assembly screws (3); two ends of the battery cell 1 (2) and the battery cell 2 (22) are respectively connected to a positive ear plate (4) and a negative ear plate (5); one end of the negative ear plate (5) is fixedly connected to the plastic support (1); one end of the positive ear plate (4) is fixedly connected to the negative ear plate (5); and the other end of the positive ear plate (4) is fixedly connected to a copper busbar (17).

2. A battery soft pack module structure according to claim 1, characterized in that: One end of the plastic bracket (1) is fixedly connected to a plurality of bracket docking platforms (14), and one side of the plastic bracket (1) is provided with a plurality of bracket connecting grooves (13).

3. A battery soft pack module structure according to claim 2, characterized in that: The plastic support (1) is internally fixedly connected to a battery cell fixing platform (9), and one end of the battery cell 1 (2) and the battery cell 2 (22) is fixedly connected to a battery cell side plate (23).

4. A battery soft pack module structure according to claim 3, characterized in that: One side of the battery cell 1 (2) and the battery cell 2 (22) is fixedly connected with an electrode mark (8), and one end of the positive electrode ear plate (4) and the negative electrode ear plate (5) is bent to form an electrode plate fixing groove (6).

5. A battery soft pack module structure according to claim 4, characterized in that: A nut installation groove (12) is formed at one end of the plastic bracket (1), and an embedded nut (15) is fixedly connected inside the nut installation groove (12).

6. A battery soft pack module structure according to claim 1, characterized in that: The positive electrode ear plate (4) and the negative electrode ear plate (5) are provided with an electrode plate fixing hole (7) at one end, the copper bar (17) is provided with a copper bar mounting hole (20) at one end, and a mounting bolt (18) is threadedly connected to one end of the embedded nut (15).

7. A battery soft pack module structure according to claim 6, characterized in that: The two ends of the plastic support (1) are provided with an electrode plate mounting groove (10) and a copper busbar mounting groove (11).

8. A battery soft pack module structure according to claim 7, characterized in that: One end of the plastic bracket (1) is fixedly connected to a copper bar limiting rod (16), one end of the copper bar (17) is provided with a copper bar positioning hole (19), and one end of the copper bar positioning hole (19) is fixedly connected to the copper bar limiting rod (16).

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