A novel soft-pack PACK structure

Abstract

This utility model relates to the field of battery cell technology and discloses a novel soft-pack PACK structure, including a housing. A cover is fixedly connected to the outer wall of the housing, and a sealing ring is fixedly connected to the inner wall of the cover. A support is installed inside the housing, and an epoxy board is fixedly connected to the outer wall of the support. Copper-aluminum composite busbars are installed on the left and right outer walls of the epoxy board, with threaded rods threaded into the interior of the copper-aluminum composite busbars. An aluminum busbar is fixedly connected inside the epoxy board, and a pressure strip is provided on the outer wall of the aluminum busbar. In this utility model, the housing and cover house the battery cells to protect them from external impact damage. An epoxy board is placed on the side of the support, and then an aluminum busbar is installed inside the epoxy board. A pressure strip is then fixed to one side of the aluminum busbar, and a data acquisition line is placed between the pressure strip and the aluminum busbar. This achieves the effects of ensuring battery cell overcurrent, welding strength, and stable data acquisition.

Description

Technical Field

[0001] This utility model relates to the field of battery cell technology, and in particular to a novel soft-pack PACK structure. Background Technology

[0002] The battery cell is the core component of a battery. It is a basic unit that can convert electrical energy and chemical energy into each other and is the key part of the battery to generate electrical energy. There are three types of battery cells: aluminum-cased cells, pouch cells, and cylindrical cells. Mobile phone batteries usually use aluminum-cased cells, while Bluetooth and other digital products mostly use pouch cells. Laptop batteries use a series and parallel combination of cylindrical cells.

[0003] When existing battery cells are connected to a charging circuit, the power supply applies voltage to the cell, and lithium ions in the positive electrode material gain energy and are released from the crystal structure of the positive electrode material. The lithium ions move towards the negative electrode in the electrolyte and are embedded in the layered structure of the negative electrode material. The voltage of the cell gradually increases until it reaches the set charging cutoff voltage, thus completing the charging process. However, existing battery cells are often directly welded to the battery casing, resulting in insufficient welding strength. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a novel soft-pack PACK structure, which aims to improve the problem of insufficient welding strength of the battery cells caused by the direct welding of the existing battery cells to the battery casing.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A novel flexible pack structure includes a box body, a box cover fixedly connected to the outer wall of the box body, a sealing ring fixedly connected to the inner wall of the box cover, a support frame disposed inside the box body, an epoxy board fixedly connected to the outer wall of the support frame, copper-aluminum composite strips disposed on the left and right outer walls of the epoxy board, threaded rods connected internally to the copper-aluminum composite strips, aluminum strips fixedly connected internally to the epoxy board, pressure strips disposed on the outer walls of the aluminum strips, threaded rods connected internally to the pressure strips, and a gripping component disposed on the upper surface of the box cover for assisting in the transfer of the flexible pack.

[0007] Preferably, the grip assembly includes a mounting block, the lower surface of which is fixedly connected to the upper surface of the lid, and a handle is rotatably connected inside the mounting block.

[0008] Preferably, the inner wall of the sealing ring is fixedly connected to the outer wall of the housing, and the outer wall of the threaded rod is threadedly connected to the inside of the epoxy board.

[0009] Preferably, the outer wall of the threaded rod three is threaded to the inner wall of the aluminum busbar, and the outer wall of the threaded rod three is threaded to the inner wall of the epoxy board.

[0010] Preferably, a baffle is fixedly connected inside the housing, a side epoxy board is fixedly connected to the outer wall of the bracket, a side plate is provided on the outer wall of the side epoxy board, the inner top wall of the side plate is provided on the upper surface of the bracket, a long screw is threadedly connected to the inner wall of the side plate, a side plate lifting lug is fixedly connected to the outer wall of the side plate, and the outer wall of the side plate lifting lug is fixedly connected to the outer wall of the baffle.

[0011] Preferably, the outer wall of the long screw is threadedly connected to the inside of the bracket, and the outer wall of the long screw is threadedly connected to the inside of the epoxy board of the side plate.

[0012] Preferably, a protective plate bracket is provided on the upper surface of the side plate, a threaded rod is internally threaded into the protective plate bracket, and a protective plate is fixedly connected to the upper surface of the protective plate bracket.

[0013] Preferably, the outer wall of the threaded rod is threaded into the interior of the bracket.

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

[0015] 1. In this utility model, the battery cell is housed in a box and a cover to protect it from external impact damage. A bracket is then installed on the outside of the battery cell, and an epoxy board is placed on the side of the bracket. An aluminum busbar is then installed inside the epoxy board, and a pressure strip is fixed to one side of the aluminum busbar. A data acquisition line is then placed between the pressure strip and the aluminum busbar. A copper-aluminum composite busbar is installed on the surface of the epoxy board. The other side of the aluminum busbar and the copper-aluminum composite busbar is then welded to the surface of the battery cell. A sealing ring is filled between the box and the cover to maintain airtightness and waterproofness. This achieves the effect of ensuring the battery cell's overcurrent and welding strength while ensuring stable data acquisition.

[0016] 2. In this utility model, the protective plate bracket is fixed above the side plate by a threaded rod. Then, a protective plate is installed on the surface of the protective plate bracket, and then a side plate epoxy board is installed on the surface of the bracket. At this time, the side plate, the side plate epoxy board and the battery cell are connected. At the same time, the side plate lifting lugs and baffles are installed to facilitate the connection of the above components to the housing to increase stability. Finally, the multiple battery cells are squeezed together to increase the warning force and the overall structural strength, and reduce the expansion of the battery cells, thereby achieving the effect of ensuring the battery cycle life. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a novel soft-pack PACK structure proposed in this utility model.

[0018] Figure 2 This is a partial structural diagram of the lid of a novel soft-pack PACK structure proposed in this utility model;

[0019] Figure 3 This is a partial structural diagram of a support frame for a novel soft-pack PACK structure proposed in this utility model;

[0020] Figure 4 This is a partial structural diagram of a protective plate bracket for a novel soft-pack PACK structure proposed in this utility model.

[0021] Legend:

[0022] 1. Enclosure; 2. Enclosure lid; 3. Sealing ring; 4. Handle; 5. Side panel lifting lugs; 6. Protective plate bracket; 7. Protective plate; 8. Bracket; 9. Baffle; 10. Side panel; 11. Long threaded rod; 12. Side panel epoxy board; 13. Threaded rod one; 14. Copper-aluminum composite busbar; 15. Pressure strip; 16. Epoxy board; 17. Threaded rod two; 18. Threaded rod three; 19. Mounting block; 20. Aluminum busbar. Detailed Implementation

[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Reference Figures 1-3 This utility model provides an embodiment of a novel soft-pack PACK structure, including a box body 1, a box cover 2 fixedly connected to the outer wall of the box body 1, a sealing ring 3 fixedly connected to the inner wall of the box cover 2, a support 8 provided inside the box body 1, an epoxy board 16 fixedly connected to the outer wall of the support 8, copper-aluminum composite strips 14 provided on the left and right outer walls of the epoxy board 16, threaded rods 17 internally threaded to the copper-aluminum composite strips 14, aluminum strips 20 fixedly connected inside the epoxy board 16, pressure strips 15 provided on the outer wall of the aluminum strips 20, threaded rods 18 internally threaded to the pressure strips 15, and a gripping component provided on the upper surface of the box cover 2 for assisting in the transfer of the soft pack;

[0025] Specifically, a sealed space is formed by the enclosure 1 and the cover 2 to protect the battery cell from external impact damage. The battery cell is then placed in this sealed space, and a bracket 8 is installed on the outside of the battery cell to compress it. An epoxy board 16 is then installed on the side of the bracket 8, and an aluminum busbar 20 is fixed in the epoxy board 16. At this time, a pressure strip 15 is fixed to one side of the aluminum busbar 20 by a threaded rod 18, and a data acquisition line is placed between the pressure strip 15 and the aluminum busbar 20. At the same time, a copper-aluminum composite busbar 14 is installed on the surface of the epoxy board 16. Then, the other side of the aluminum busbar 20 and the copper-aluminum composite busbar 14 are welded to the surface of the battery cell. A sealing ring 3 is filled between the enclosure 1 and the cover 2 to maintain airtightness and waterproofness. This achieves the effect of ensuring battery cell overcurrent and welding strength while ensuring stable data acquisition.

[0026] Reference Figure 1 and Figure 3 The grip assembly includes a mounting block 19, the lower surface of which is fixedly connected to the upper surface of the cover 2, and a handle 4 is rotatably connected inside the mounting block 19; the inner wall of the sealing ring 3 is fixedly connected to the outer wall of the housing 1; the outer wall of the threaded rod 17 is threadedly connected to the inside of the epoxy board 16; the outer wall of the threaded rod 18 is threadedly connected to the inner wall of the aluminum strip 20, and the outer wall of the threaded rod 18 is threadedly connected to the inner wall of the epoxy board 16.

[0027] Specifically, a handle 4 and a mounting block 19 are installed on the surface of the lid 2 to facilitate the user's movement of the box body 1 and the lid 2.

[0028] Reference Figures 2-4 The box 1 is internally fixedly connected to a baffle 9. The outer wall of the bracket 8 is fixedly connected to a side epoxy board 12. The outer wall of the side epoxy board 12 is provided with a side plate 10. The inner top wall of the side plate 10 is provided on the upper surface of the bracket 8. The inner wall of the side plate 10 is threadedly connected to a long screw 11. The outer wall of the side plate 10 is fixedly connected to a side plate lifting lug 5. The outer wall of the side plate lifting lug 5 is fixedly connected to the outer wall of the baffle 9. The outer wall of the long screw 11 is threadedly connected to the inside of the bracket 8. The outer wall of the long screw 11 is threadedly connected to the inside of the side epoxy board 12. The upper surface of the side plate 10 is provided with a protective plate bracket 6. The inner wall of the protective plate bracket 6 is threadedly connected to a threaded rod 13. The upper surface of the protective plate bracket 6 is fixedly connected to a protective plate 7. The outer wall of the threaded rod 13 is threadedly connected to the inside of the bracket 8.

[0029] Specifically, a protective plate bracket 6 is fixed above the side plate 10 by a threaded rod 13, and a protective plate 7 is fixed on the surface of the protective plate bracket 6. At this time, a side plate epoxy plate 12 is installed on the surface of the bracket 8, and the side plate 10, the side plate epoxy plate 12 and the battery cell are connected by a long screw 11. At the same time, the side plate lifting lug 5 and the baffle 9 are installed to facilitate the connection of the above components to the housing 1 to increase stability. Finally, the multiple battery cells are squeezed together to increase the warning force and the overall structural strength, and reduce the expansion of the battery cells, thereby ensuring the battery cycle life.

[0030] Working principle: When this structure is needed, a sealed space is first formed by the box body 1 and the box cover 2 to accommodate the soft-pack battery cells. Then, a bracket 8 is installed in this sealed space for support. At the same time, a handle 4 and a mounting block 19 are installed on the surface of the box cover 2 to facilitate the user's transfer of the soft-pack battery cells. Then, an epoxy board 16 is installed on the side of the bracket 8, and an aluminum busbar 20 is embedded inside the epoxy board 16. The pressure strip 15 is fixed to the surface of the aluminum busbar 20 by the threaded rod 18 to fix the acquisition line between the pressure strip 15 and the aluminum busbar 20. At the same time, copper-aluminum composite busbars 14 are installed on both the left and right sides of the epoxy board 16 and fixed by the threaded rod 17. The surfaces of the aluminum busbar 20 and the copper-aluminum composite busbar 14 are welded. The battery cells are connected to ensure overcurrent protection. A sealing ring 3 is filled in the gap between the housing 1 and the cover 2 to maintain airtightness and waterproofness, thereby ensuring the overcurrent protection and welding strength of the battery cells while ensuring stable data acquisition. A protective plate bracket 6 is installed above the side plate 10, and a protective plate 7 is installed above the protective plate bracket 6. Then, a side plate epoxy board 12 and a side plate 10 are installed on the surface of the bracket 8. At the same time, a side plate lifting lug 5 and a baffle 9 are installed to facilitate connection with the housing 1. A long screw 11 connects the side plate 10 to the battery cells. This makes the multiple battery cells squeezed together, increasing the warning force and overall structural strength, reducing battery cell expansion, thereby ensuring the battery cycle life.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 novel flexible pack structure, comprising a housing (1), characterized in that: The outer wall of the box body (1) is fixedly connected to the box cover (2), and the inner wall of the box cover (2) is fixedly connected to the sealing ring (3). The box body (1) is provided with a bracket (8), and the outer wall of the bracket (8) is fixedly connected to an epoxy board (16). The left and right outer walls of the epoxy board (16) are provided with copper-aluminum composite bars (14). The inner thread of the copper-aluminum composite bars (14) is connected to a threaded rod (17). The inner thread of the epoxy board (16) is fixedly connected to an aluminum bar (20). The outer wall of the aluminum bar (20) is provided with a pressure strip (15). The inner thread of the pressure strip (15) is connected to a threaded rod (18). The upper surface of the box cover (2) is provided with a gripping component, which is used to assist in the transfer of soft packages.

2. The novel flexible PACK structure according to claim 1, characterized in that: The grip assembly includes a mounting block (19), the lower surface of which is fixedly connected to the upper surface of the cover (2), and a handle (4) is rotatably connected inside the mounting block (19).

3. The novel flexible PACK structure according to claim 1, characterized in that: The inner wall of the sealing ring (3) is fixedly connected to the outer wall of the box (1), and the outer wall of the threaded rod (17) is threadedly connected to the inside of the epoxy board (16).

4. The novel flexible PACK structure according to claim 1, characterized in that: The outer wall of the threaded rod three (18) is threaded to the inner wall of the aluminum busbar (20), and the outer wall of the threaded rod three (18) is threaded to the inner wall of the epoxy board (16).

5. A novel flexible PACK structure according to claim 1, characterized in that: The box (1) is fixedly connected to a baffle (9) inside. The outer wall of the bracket (8) is fixedly connected to a side epoxy board (12). The outer wall of the side epoxy board (12) is provided with a side plate (10). The inner top wall of the side plate (10) is provided on the upper surface of the bracket (8). The inner wall of the side plate (10) is threadedly connected to a long screw (11). The outer wall of the side plate (10) is fixedly connected to a side plate lug (5). The outer wall of the side plate lug (5) is fixedly connected to the outer wall of the baffle (9).

6. A novel flexible PACK structure according to claim 5, characterized in that: The outer wall of the long screw (11) is threadedly connected to the inside of the bracket (8), and the outer wall of the long screw (11) is threadedly connected to the inside of the side plate epoxy board (12).

7. A novel flexible PACK structure according to claim 5, characterized in that: The upper surface of the side plate (10) is provided with a protective plate bracket (6), the internal thread of the protective plate bracket (6) is connected with a threaded rod (13), and the upper surface of the protective plate bracket (6) is fixedly connected with a protective plate (7).

8. A novel flexible PACK structure according to claim 7, characterized in that: The outer wall of the threaded rod (13) is threadedly connected to the inside of the bracket (8).

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