Integrated structure for sodium battery pack PACK box

Abstract

The invention relates to the technical field of sodium battery pack assembly, in particular to a sodium battery pack PACK box integrated structure which comprises a battery cell assembly bottom shell, a battery cell main body is placed at the bottom of an inner cavity of the battery cell assembly bottom shell, an assembly cover plate is placed at the top of the battery cell main body, and assembly side plates are mounted on the left side and the right side of the battery cell main body; the front side of the battery cell main body is fixedly connected with a series target sheet protection frame, the front side of the series target sheet protection frame is riveted with a target sheet body, and the left side of the surface of the series target sheet protection frame is connected with a mounting bracket through a bolt. By means of the unique structural design, the sodium battery cell 48S1P is integrated, the purposes of reducing the structural cost, saving energy and reducing emission are achieved, meanwhile, the installation stability of the internal structure of the sodium battery pack PACK box is guaranteed, the requirements for hoisting, transferring and bearing of the large-size and large-weight cell are guaranteed through the unique welding balance weight structural design, and the stability of the sodium battery pack PACK box is guaranteed. The advantages of light structure and high bearing capacity are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of nano battery assembly, in particular to an integrated structure of a sodium battery pack PACK box. Background Art

[0002] The integrated PACK box optimizes the existing assembly method through structural design, achieving free switching of different sizes and types, making work more convenient and ensuring the installation stability of the internal structure of the sodium battery pack PACK box, making the structure light, strong in bearing capacity, reducing costs, and saving energy and reducing emissions.

[0003] Sodium battery pack assembly refers to the process of assembling the various components of sodium-ion batteries into complete battery units or battery packs according to a certain process flow. During the assembly process, the current workbench tooling is not only inefficient, but also cannot meet the assembly of multiple varieties and large sizes of sodium battery pack cells. Its practicality and versatility are poor. In order to solve the above technical problems, we have designed an integrated structure for the sodium battery pack PACK box. Summary of the invention

[0004] The purpose of the present invention is to provide an integrated structure for a sodium battery pack PACK box, which has the function of freely switching between different sizes and types, realizing the transition from the original limited single-type battery cell assembly to the large-size multi-type assembly, thereby making the work more convenient, while achieving the advantages of light structure and strong load-bearing capacity, and solving the limitations of the current workbench for assembling batteries. The original workbench is limited by the size of the assembled batteries and cannot be used for large or small-sized batteries. Different sizes and types cannot be freely switched, and the practicality and versatility are poor.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an integrated structure for a sodium battery pack PACK box, comprising a cell assembly bottom shell, a cell body is placed at the bottom of the inner cavity of the cell assembly bottom shell, an assembly cover is placed on the top of the cell body, assembly side panels are installed on the left and right sides of the cell body, a series target film protection frame is fixedly connected to the front side of the cell body, a target film body is riveted to the front side of the series target film protection frame, a mounting bracket is connected to the left side of the surface of the series target film protection frame by bolts, a positive electrode connector and a negative electrode connector are respectively penetrated and fixedly connected at the top and bottom of the front side of the mounting bracket, a terminal is welded on the front side of the positive electrode connector and the negative electrode connector, a BMS mounting plate is fixedly connected to the left and right sides of the front side of the series target film protection frame, packaging side panels are installed on the left and right sides of the cell assembly bottom shell, a packaging front plate is installed on the front side of the cell assembly bottom shell, and a packaging top plate is installed on the top of the cell assembly bottom shell.

[0006] Preferably, the assembly cover plate comprises a cover plate body, a fixing rib plate is welded on the top of the cover plate body, and thread grooves are provided on both the left and right sides of the fixing rib plate.

[0007] Preferably, the packaging front panel includes a front panel body, and cooling fans are connected to the left and right sides of the rear side of the front panel body by bolts, through holes are provided at the top and bottom of the left side of the front side of the front panel body, and ventilation nets are provided on the left and right sides of the front side of the front panel body.

[0008] Preferably, mounting frames are welded to the front sides of the left and right sides of the battery cell assembly bottom shell, and a supporting bottom plate is glued to the bottom of the inner cavity of the battery cell assembly bottom shell.

[0009] Preferably, a reinforcing rib plate is fixedly connected to the outer side of the assembly side panel, the top and bottom of the inner side of the reinforcing rib plate are fixedly connected to the assembly cover plate and the bottom of the inner cavity of the battery cell assembly bottom shell by installing screws, and the top and bottom of the inner side of the packaging side panel are glued with support blocks.

[0010] Preferably, a connecting vertical plate is welded to the front side of the packaging side plate, and a vertical rib plate is fixedly connected to the rear side of the inner cavity of the battery cell assembly bottom shell.

[0011] Preferably, the bottom of the package top plate is fixedly connected to the battery cell assembly bottom shell, the assembly side plate and the package front plate by bolts, and the surface of the package side plate is provided with heat dissipation mesh holes.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] When the present invention is assembling inside the sodium battery pack PACK box, the bottom assembly of the battery cell is placed on the workbench, the battery cell to be assembled is placed on the bottom assembly of the battery cell, the assembly gap between the battery cell and the bottom assembly of the battery cell is adjusted through the epoxy phenolic layer sub-cloth board bottom plate epoxy board and the bottom plate edge strip epoxy board, a foamed polystyrene isolation board is added between the two battery cells to ensure that the gap meets the design requirements, the battery cell side plate bottom plate is connected to the fixtures at both ends of the workbench, and after the battery cells are stacked to a specified number, the battery cell assembly side plate assemblies on both sides are connected and squeezed and tightened by special tools, and after the size and shape are adjusted to meet the design requirements, the upper assembly of the battery cell is installed, and the epoxy phenolic layer sub-cloth board bottom plate epoxy board and the bottom plate edge strip epoxy board are installed. The epoxy board of the board edge strip adjusts the assembly gap between the battery cell and the upper assembly of the battery cell. The screw welding parts are respectively inserted into the bottom assembly of the battery cell and the upper assembly of the battery cell. After locking the nut, the installation size of the battery cell is fixed and the shape and position size is adjusted to ensure the assembly and positioning of the battery cell. After installing the series target plate and the series target plate protection frame, the target plate and the battery cell are welded by laser welding. After the terminal is assembled in place, it is laser welded. After welding, pay attention to protecting the terminal assembly parts during hoisting. No displacement is allowed, which ensures the installation stability of the internal structure of the sodium battery pack PACK box. Its unique welding counterweight structure design ensures the hoisting, transportation and load-bearing requirements of large-size and heavy-weight battery cells, so that the structure is light and the bearing capacity is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is an internal isometric view of the structure of the present invention;

[0015] Figure 2 A perspective view of the battery cell of the present invention with the bottom shell and the battery cell body assembled;

[0016] Figure 3 It is an assembly isometric view of the structure of the present invention;

[0017] Figure 4 It is a rear isometric view of a local structure of the present invention;

[0018] Figure 5 Left isometric view of the assembled cover plate of the present invention.

[0019] In the figure: 1. Battery cell assembly bottom shell; 2. Reinforcing rib plate; 3. Assembly side plate; 4. Installation screw; 5. Assembly cover plate; 6. Package side plate; 7. Mounting frame; 8. Negative electrode connector; 9. Terminal post; 10. Positive electrode connector; 11. Mounting bracket; 12. BMS mounting plate; 13. Target body; 14. Series target protection frame; 15. Support bottom plate; 16. Battery cell body; 17. Vertical rib plate; 18. Package top plate; 19. Connection vertical plate; 20. Package front plate; 21. Support block; 22. Front plate body; 23. Cooling fan; 24. Through hole; 25. Cover body; 26. Threaded groove; 27. Fixed rib plate. DETAILED DESCRIPTION

[0020] See also Figure 1-Figure 5 , a PACK box integrated structure for a sodium battery pack, comprising a cell assembly bottom shell 1, a cell body 16 is placed at the bottom of the inner cavity of the cell assembly bottom shell 1, an assembly cover plate 5 is placed on the top of the cell body 16, assembly side plates 3 are installed on both sides of the cell body 16, a series target sheet protection frame 14 is fixedly connected to the front side of the cell body 16, a target sheet body 13 is riveted to the front side of the series target sheet protection frame 14, a mounting bracket 11 is connected to the left side of the surface of the series target sheet protection frame 14 by bolts, a positive electrode connector 10 and a negative electrode connector 8 are respectively penetrated and fixedly connected to the top and bottom of the front side of the mounting bracket 11, a terminal 9 is welded to the front side of the positive electrode connector 10 and the negative electrode connector 8, a BMS mounting plate 12 is fixedly connected to the left and right sides of the front side of the series target sheet protection frame 14, packaging side plates 6 are installed on both sides of the cell assembly bottom shell 1, a packaging front plate 20 is installed on the front side of the cell assembly bottom shell 1, and a packaging top plate 18 is installed on the top of the cell assembly bottom shell 1;

[0021] See also Figure 5 The assembly cover plate 5 includes a cover plate body 25, a fixing rib plate 27 is welded on the top of the cover plate body 25, and a thread groove 26 is provided on both sides of the fixing rib plate 27. By providing the fixing rib plate 27, the overall strength of the cover plate body 25 can be enhanced, and the thread grooves 26 on both sides can allow the installation screws 4 to penetrate for fixed connection;

[0022] See also Figure 4 The packaging front plate 20 includes a front plate body 22. The left and right sides of the rear side of the front plate body 22 are connected with cooling fans 23 by bolts. By providing the cooling fans 23, the internal battery body 16 can be cooled by air. The top and bottom of the left side of the front side of the front plate body 22 are provided with through holes 24. By providing the through holes 24, the terminal 9 can pass through the front plate body 22 to connect the external cable. The left and right sides of the front side of the front plate body 22 are provided with ventilation nets. By providing the ventilation nets, it is possible to prevent external dust and other impurities from being sucked into the battery pack.

[0023] See also Figure 1 and Figure 2 The front sides of the left and right sides of the battery cell assembly bottom shell 1 are welded with mounting frames 7, and the rear side of the mounting frames 7 is fixedly connected to the connecting vertical plate 19 by bolts, so that the package side plate 6 can be fixedly installed, and the front side of the mounting frames 7 is fixedly connected to the package front plate 20 by bolts to fix it. The bottom of the inner cavity of the battery cell assembly bottom shell 1 is glued with a supporting bottom plate 15, which is composed of a battery cell bottom plate welded part, a bottom plate edge strip epoxy plate and a bottom plate epoxy plate. The epoxy plate plays a role in adjusting the assembly gap and can effectively protect the battery cell from scratches during the assembly process;

[0024] See also Figure 1 and Figure 4 The outer side of the assembly side panel 3 is fixedly connected with a reinforcing rib plate 2. By providing the reinforcing rib plate 2, the supporting strength of the assembly side panel 3 can be enhanced, and the structural load-bearing function is played. The top and bottom of the inner side of the reinforcing rib plate 2 are fixedly connected with the assembly cover plate 5 and the bottom of the inner cavity of the battery assembly bottom shell 1 by installing screws 4, and the top and bottom of the inner side of the packaging side panel 6 are glued with support blocks 21;

[0025] See also Figure 2 and Figure 3 A connecting vertical plate 19 is welded to the front side of the packaging side plate 6, and a vertical rib plate 17 is fixedly connected to the rear side of the inner cavity of the battery cell assembly bottom shell 1. By providing the vertical rib plate 17, the side support strength of the battery cell assembly bottom shell 1 can be enhanced;

[0026] See also Figure 3 The bottom of the packaging top plate 18 is fixedly connected to the battery cell assembly bottom shell 1, the assembly side plate 3 and the packaging front plate 20 by bolts. The surface of the packaging side plate 6 is provided with a heat dissipation mesh. By setting the heat dissipation mesh, the heat in the battery pack can be quickly discharged.

[0027] A method for using the integrated structure of a sodium battery pack PACK box, the specific operation steps are as follows:

[0028] A: First, epoxy boards are pasted on the bottom of the inner cavity of the battery assembly bottom shell 1, the inner side of the assembly side panel 3 and the assembly cover plate 5, and EVA cotton is pasted between the batteries inside the battery body 16. The battery assembly bottom shell 1, the right assembly side panel 3 and the packaging side panel 6 are placed on the workbench, and then the batteries are arranged from left to right and the positive and negative pole directions are checked. During the installation of the battery, the assembly gap between the battery and the battery assembly bottom parts is adjusted through the epoxy phenolic layer, the epoxy board and the bottom plate edge strip epoxy board. The battery side panel bottom plate is connected to the fixtures at both ends of the workbench. After the batteries are stacked to the specified number, the assembly side panels 3 on both sides are connected, and the battery side panel bottom plate is squeezed and tightened by special tools, and a leather hammer is hit against the battery to make it in close contact;

[0029] B: Cover the assembly cover plate 5, align the right side of the fixed rib plate 27 with the right assembly side plate 3 and install them into the slot, then install the left assembly side plate 3 and insert the left end of the fixed rib plate 27 into the slot, use a leather hammer to tighten, push the installation workbench to pre-tighten, and then fix the top and bottom of the assembly side plate 3 through the installation screws 4 to make them fixedly connected with the assembly cover plate 5 and the bottom of the inner cavity of the battery assembly bottom shell 1, and after locking the installation screws 4, fix the battery installation size and adjust the shape and position size to ensure that the assembly positioning of the battery is completed;

[0030] C: Install the series target protection frame 14, connect the target body 13 to the battery cell contact through laser welding, install heat shrink tubing on the positive connector 10 and the negative connector 8 and fix them to the terminal 9 through laser welding, measure the voltage with a multimeter, install the wiring harness, check the appearance of the wiring harness and the tightness of the connectors, correctly wire the wires according to the requirements of the BMS specification, tighten the screws one by one, and after the performance test, lift the battery cell group, install the assembly side panel 3 on the left, and then install the packaging front panel 20 and cover the packaging top panel 18.

[0031] In summary: the integrated structure of the PACK box for the sodium battery pack solves the limitations of the current workbench assembly of batteries through the coordinated use of the battery cell assembly bottom shell 1, the assembly side plate 3, the installation screw 4, the assembly cover plate 5, the packaging side plate 6, the terminal 9, the battery cell body 16, the packaging top plate 18 and the packaging front plate 20. The original workbench is limited by the size of the assembled battery cells and cannot be used for large or small size batteries. Different sizes and types cannot be switched freely, and the practicality and versatility are poor.

Claims

1. An integrated structure for a sodium battery pack PACK box, comprising a battery cell assembly bottom shell (1), characterized in that: A cell body (16) is placed at the bottom of the inner cavity of the cell assembly bottom shell (1), an assembly cover plate (5) is placed on the top of the cell body (16), and assembly side plates (3) are installed on both the left and right sides of the cell body (16), and a series target sheet protection frame (14) is fixedly connected to the front side of the cell body (16), and the target sheet body (13) is riveted to the front side of the series target sheet protection frame (14), and a mounting bracket (11) is connected to the left side of the surface of the series target sheet protection frame (14) by bolts, and the front side of the mounting bracket (11) is fixedly connected to the front side of the series target sheet protection frame (14). The top and bottom of the battery cell assembly bottom shell (1) are respectively penetrated and fixedly connected with a positive electrode connector (10) and a negative electrode connector (8), and the front sides of the positive electrode connector (10) and the negative electrode connector (8) are welded with a terminal post (9). The left and right sides of the front side of the series target sheet protection frame (14) are fixedly connected with a BMS installation plate (12), the left and right sides of the battery cell assembly bottom shell (1) are both installed with a packaging side plate (6), the front side of the battery cell assembly bottom shell (1) is installed with a packaging front plate (20), and the top of the battery cell assembly bottom shell (1) is installed with a packaging top plate (18).

2. The integrated structure of a sodium battery pack PACK box according to claim 1, characterized in that: The assembly cover plate (5) comprises a cover plate body (25), a fixing rib plate (27) is welded on the top of the cover plate body (25), and thread grooves (26) are provided on both left and right sides of the fixing rib plate (27).

3. The integrated structure of a sodium battery pack PACK box according to claim 1, characterized in that: The packaging front plate (20) comprises a front plate body (22), the left and right sides of the rear side of the front plate body (22) are connected to a cooling fan (23) by bolts, the top and bottom of the left side of the front side of the front plate body (22) are provided with a through hole (24), and the left and right sides of the front side of the front plate body (22) are provided with a ventilation net.

4. The integrated structure of a sodium battery pack PACK box according to claim 1, characterized in that: Mounting frames (7) are welded to the front sides of both the left and right sides of the battery cell assembly bottom shell (1), and a supporting bottom plate (15) is glued to the bottom of the inner cavity of the battery cell assembly bottom shell (1).

5. The integrated structure of a sodium battery pack PACK box according to claim 1, characterized in that: The outer side of the assembly side plate (3) is fixedly connected with a reinforcing rib plate (2), the top and bottom of the inner side of the reinforcing rib plate (2) are fixedly connected to the assembly cover plate (5) and the bottom of the inner cavity of the battery cell assembly bottom shell (1) via mounting screws (4), and the top and bottom of the inner side of the packaging side plate (6) are glued with support blocks (21).

6. The integrated structure for sodium battery pack PACK box according to claim 1, characterized in that: A connecting vertical plate (19) is welded to the front side of the packaging side plate (6), and a vertical rib plate (17) is fixedly connected to the rear side of the inner cavity of the battery cell assembly bottom shell (1).

7. The integrated structure of a sodium battery pack PACK box according to claim 1, characterized in that: The bottom of the packaging top plate (18) is fixedly connected to the battery cell assembly bottom shell (1), the assembly side plate (3) and the packaging front plate (20) by means of bolts, and the surface of the packaging side plate (6) is provided with heat dissipation mesh holes.

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