PACK module structure

Abstract

The utility model relates to the technical field of batteries, and discloses a PACK module structure which comprises a battery cell, a module end plate is arranged on one side of the battery cell, a PP plate is fixedly connected between the module end plate and the battery cell, an upper side plate is arranged on the side wall of the module end plate, a mounting hole is formed in the top of the upper side plate, and the PP plate is fixedly connected with the upper side plate. An epoxy plate is arranged at the tops of the battery cells, through holes are formed in the surface of the epoxy plate and correspond to the mounting holes, the through holes are connected with the mounting holes through bolts, the number of the battery cells is multiple, and the two sides of the multiple battery cells are mutually connected through PP plates to form a module assembly; and fixing mechanisms are arranged on the side walls of the plurality of battery cells. According to the utility model, the epoxy plate is fixed through the mounting hole in the top of the upper side plate and the through hole formed in the epoxy plate, and the arrangement of the epoxy plate on the top of the module can effectively prevent the battery cell from being damaged due to misoperation or falling of residues into the upper part of the module, so that accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a PACK module structure. Background Art

[0002] With the rapid development of the electric vehicle market and the energy storage market, the demand for lithium batteries continues to increase. In order to meet the endurance and performance requirements of energy storage or electric vehicles, an advanced PACK module structure is designed.

[0003] After searching, the publication number CN217544789U discloses a structure for fixing a PACK module using a stamping part, including a module bracket and a stamping part located on both sides of the battery pack, the module bracket is provided with corresponding reinforcing ribs at intervals along the length direction, and both ends of the stamping part are respectively provided with hooks for hooking the reinforcing ribs, and the two ends of the stamping part are respectively fixed to the module bracket through fasteners. This structure solves the problem that the module cannot be fastened and fixed due to insufficient space.

[0004] Although the stamping parts in the above application can fix the module, no protective measures are taken to effectively prevent operational errors or debris from falling onto the top of the module, which may cause damage to the battery cells. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a PACK module structure, aiming to improve the problem in the traditional structure that there is no effective protection measure on the top of the module, and it cannot effectively prevent operating errors or residues from falling into the top of the module and causing damage to the battery cells.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PACK module structure, including a battery cell, a module end plate is arranged on one side of the battery cell, a PP plate is fixedly connected between the module end plate and the battery cell, an upper side plate is arranged on the side wall of the module end plate, a mounting hole is provided on the top of the upper side plate, an epoxy plate is arranged on the top of the battery cell, a through hole is provided on the surface of the epoxy plate, the through hole corresponds to the mounting hole, the through hole and the mounting hole are connected by bolts, there are multiple battery cells, both sides of the multiple battery cells are interconnected by PP plates to form a module assembly, and fixing mechanisms are arranged on the side walls of the multiple battery cells.

[0007] Preferably, the fixing mechanism comprises a lower side plate, both ends of the lower side plate are provided with screws, and the bottoms of the screws are mounted on the side walls of the module end plate.

[0008] Preferably, the module assembly includes a positive terminal, a negative terminal is arranged on the opposite side of the positive terminal, and the tops of the positive terminal and the negative terminal are fixedly connected with insulating columns.

[0009] Preferably, the positive terminal is provided with a positive aluminum bar, and the negative terminal is provided with a negative aluminum bar.

[0010] Preferably, a battery cell pole is provided inside the battery cell, and a series aluminum bar is fixedly connected to the top of the battery cell pole.

[0011] Preferably, the positive terminal and the negative terminal are both arranged at the bottom of the series-connected aluminum bar, and the series-connected aluminum bar is fixedly connected to the positive aluminum bar and the negative aluminum bar respectively.

[0012] Preferably, the length of the PP plate is longer than the length of the battery cell.

[0013] Preferably, the PP board has adhesive properties.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the epoxy board is fixed by the mounting hole on the top of the upper side plate and the through hole provided in the epoxy board. The setting of the epoxy board on the top of the module can effectively prevent the damage to the battery cell caused by operating errors or residues falling on the top of the module, thereby avoiding accidents.

[0016] 2. In the utility model, the battery cells can be effectively connected in series by means of the battery poles and the series aluminum bars arranged inside the battery cells. The series aluminum bars have a convex mold part in the middle, so that when the battery expands, the problem of aluminum bar cold welding caused by battery expansion is avoided, thereby enhancing the structural strength and stability.

[0017] 3. In the utility model, the PP board has adhesive properties, and multiple battery cells are connected by the PP board, and the battery cells are fixed by a fixing mechanism, which can effectively improve the overall stability and reliability of the module, avoid the loosening or falling of the battery cells during use, and can effectively increase the adhesion between the battery cells and the PP board, thereby improving the overall vibration and impact resistance of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a PACK module structure proposed by the utility model;

[0019] Figure 2 An exploded diagram of a PACK module structure proposed by the utility model;

[0020] Figure 3 This is a top view of a PACK module structure proposed by the utility model.

[0021] Legend:

[0022] 1. Battery cell; 2. PP board; 3. Module end plate; 4. Insulation column; 5. Positive aluminum busbar; 6. Epoxy board; 7. Series aluminum busbar; 8. Upper side plate; 9. Screws; 10. Lower side plate; 11. Through hole; 12. Mounting hole; 13. Positive terminal; 14. Negative terminal; 15. Negative aluminum busbar. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings of the specification of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-Figure 3 The utility model provides an embodiment: a PACK module structure, including a battery cell 1, a module end plate 3 is arranged on one side of the battery cell 1, a PP plate 2 is fixedly connected between the module end plate 3 and the battery cell 1, an upper side plate 8 is arranged on the side wall of the module end plate 3, a mounting hole 12 is opened on the top of the upper side plate 8, an epoxy plate 6 is arranged on the top of the battery cell 1, a through hole 11 is opened on the surface of the epoxy plate 6, the through hole 11 corresponds to the mounting hole 12, the through hole 11 and the mounting hole 12 are connected by bolts, the number of battery cells 1 is multiple, the two sides of the multiple battery cells 1 are connected to each other by the PP plate 2 to form a module assembly, and the side walls of the multiple battery cells 1 are provided with a fixing mechanism.

[0025] Specifically, multiple battery cells 1 are connected through a PP plate 2 to form a module assembly, module end plates 3 are installed on both sides of the module assembly, and the side walls of the module end plates 3 are installed with upper side plates 8. The epoxy plate 6 is fixed by bolts through the mounting holes 12 on the top of the upper side plate 8 and the through holes 11 provided in the epoxy plate 6. The epoxy plate 6 is installed on the top of the module assembly. The setting of the epoxy plate 6 can effectively prevent the battery cells 1 from being damaged due to operational errors or residues falling onto the top of the module.

[0026] Reference Figure 1 and Figure 2 The fixing mechanism includes a lower side plate 10, both ends of the lower side plate 10 are provided with screws 9, the bottom of the screws 9 is installed on the side wall of the module end plate 3, and the length of the PP plate 2 is longer than the length of the battery cell 1.

[0027] Specifically, the length of the PP plate 2 is longer than the battery cell 1, which prevents the upper side plate 8 and the lower side plate 10 from directly contacting the battery cell 1 during installation, causing damage to the battery cell 1. At the same time, the lower side plate 10 is installed on the side wall of the module end plate 3 by screws 9, and the lower side plate 10 is fixed to the bottom of the module assembly. Through the cooperation of the upper side plate 8 and the lower side plate 10, the module assembly is fixed, thereby improving the stability and safety of the module assembly.

[0028] Reference Figure 2 and Figure 3 The module assembly includes a positive terminal 13, a negative terminal 14 is arranged on the opposite side of the positive terminal 13, and the tops of the positive terminal 13 and the negative terminal 14 are fixedly connected with an insulating column 4.

[0029] Specifically, the positive terminal 13 and the negative terminal 14 are used to connect the module assembly with an external power source or device to ensure that current can flow into and out of the battery cell 1 correctly. The insulating column 4 is provided to provide insulation to prevent current from flowing through an unintended path of the module assembly, thereby ensuring safe operation of the module assembly.

[0030] Reference Figure 1 and Figure 3 The positive terminal 13 is provided with a positive aluminum bar 5, and the negative terminal 14 is provided with a negative aluminum bar 15. The positive terminal 13 and the negative terminal 14 are both arranged at the bottom of the series aluminum bar 7, and the series aluminum bar 7 is fixedly connected to the positive aluminum bar 5 and the negative aluminum bar 15 respectively.

[0031] Specifically, the positive aluminum bar 5, the negative aluminum bar 15 and the series aluminum bar 7 are used to connect the battery cells 1 inside the module assembly to achieve series or parallel connection between the battery cells 1, thereby meeting different voltage and current requirements. The series aluminum bar 7 is used to connect the positive aluminum bar 5 and the negative aluminum bar 15 to ensure that the current can flow smoothly inside the module assembly. At the same time, the series aluminum bar 7 has a convex mold part in the middle, so that when the battery expands, the aluminum bar cold welding problem caused by battery expansion is avoided, and the structural strength and stability are enhanced. The positive aluminum bar 5, the negative aluminum bar 15 and the series aluminum bar 7 are all made of aluminum, which has good conductivity and corrosion resistance, and can ensure the long-term stable operation of the module assembly.

[0032] The PP plate 2 has adhesive properties.

[0033] Specifically, the PP board 2 has adhesive properties, which allows the PP board 2 to adhere to the battery cell 1 more firmly during the assembly process, effectively preventing the battery cell 1 from moving or misaligning in the module assembly, thereby improving the overall stability and safety of the module assembly. At the same time, the adhesive PP board 2 also simplifies the assembly process, thereby improving production efficiency and cost-effectiveness.

[0034] Working principle: First, after measurement with professional equipment, select the same battery cells 1, and adhere the selected battery cells 1 to each other through the PP plate 2. The PP plate 2 has a certain insulation. The module end plate 3 is fixedly connected through the PP plate 2 on the side away from the first battery cell 1 and the last battery cell 1. The lower side plate 10 is fixed to the side wall of the module end plate 3 by screws 9, and then the upper side plate 8 is installed to one side of the module end plate 3, so that the upper side plate 8 corresponds to the lower side plate 10, and the top of the upper side plate 8 is provided with a mounting hole 12. The epoxy plate 6 is installed on the top of the battery cell 1, and the through hole 11 is provided on the epoxy plate 6, so that the through hole 11 corresponds to the mounting hole 12, and then the upper side plate 8 is connected and fixed with the epoxy plate 6 by bolts to complete the battery cell 1. Assembly; when the module assembly is working, the battery cells 1 are charged and discharged, and the battery cells 1 in the module assembly are connected in series. When one of the battery cells 1 is damaged, it will not affect the normal operation of other battery cells 1 in the module assembly. At the same time, the middle of the series aluminum row 7 has a convex mold part, so that when the battery expands, the problem of aluminum row cold welding caused by battery expansion is avoided, and the structural strength and stability are enhanced. Through the cooperation of the upper side plate 8 and the lower side plate 10, the module assembly is fixed, and the stability and safety of the module assembly are improved. Through the adhesive property of the PP plate 2, the PP plate 2 is more firmly adhered to the battery cell 1, preventing the battery cell 1 from moving or misaligning in the module assembly, and further improving the overall stability and safety of the module assembly.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PACK module structure, comprising a battery cell (1), characterized in that: A module end plate (3) is provided on one side of the battery cell (1); a PP plate (2) is fixedly connected between the module end plate (3) and the battery cell (1); an upper side plate (8) is provided on the side wall of the module end plate (3); a mounting hole (12) is provided on the top of the upper side plate (8); an epoxy plate (6) is provided on the top of the battery cell (1); a through hole (11) is provided on the surface of the epoxy plate (6); the through hole (11) corresponds to the mounting hole (12); the through hole (11) and the mounting hole (12) are connected by bolts; there are a plurality of battery cells (1); the two sides of the plurality of battery cells (1) are connected to each other by the PP plate (2) to form a module assembly; and a fixing mechanism is provided on the side walls of the plurality of battery cells (1).

2. A PACK module structure according to claim 1, characterized in that: The fixing mechanism comprises a lower side plate (10), both ends of which are provided with screws (9), and the bottom of the screws (9) is mounted on the side wall of the module end plate (3).

3. A PACK module structure according to claim 1, characterized in that: The module assembly comprises a positive terminal (13), a negative terminal (14) is arranged on the opposite side of the positive terminal (13), and the tops of the positive terminal (13) and the negative terminal (14) are fixedly connected with insulating columns (4).

4. A PACK module structure according to claim 3, characterized in that: The positive terminal (13) is provided with a positive aluminum bar (5), and the negative terminal (14) is provided with a negative aluminum bar (15).

5. A PACK module structure according to claim 1, characterized in that: A battery pole is arranged inside the battery cell (1), and a series aluminum bar (7) is fixedly connected to the top of the battery pole.

6. A PACK module structure according to claim 3, characterized in that: The positive terminal (13) and the negative terminal (14) are both arranged at the bottom of the series-connected aluminum bar (7), and the series-connected aluminum bar (7) is fixedly connected to the positive aluminum bar (5) and the negative aluminum bar (15) respectively.

7. A PACK module structure according to claim 1, characterized in that: The length of the PP plate (2) is longer than the length of the battery cell (1).

8. A PACK module structure according to claim 1, characterized in that: The PP plate (2) has adhesive properties.

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