Limiting tool for battery cell grouping

Abstract

The utility model discloses a limiting tool for battery cell grouping, and relates to the field of battery assembly. The limiting tool specifically comprises a limiting frame, a first limiting plate and a second limiting plate, an opening is formed in the top of the limiting frame, a frame door capable of being opened and locked is arranged on the side face of the limiting frame, battery cells are arranged in the limiting frame, the first limiting plate and the second limiting plate are arranged at the top of the limiting frame, and the first limiting plate and the second limiting plate are arranged on the limiting frame. The first limiting plate and the second limiting plate can be locked and unlocked, limiting grooves are formed in the first limiting plate and the second limiting plate, a pole lug is arranged at the top of the battery cell, and the pole lug is clamped between the first limiting plate and the second limiting plate in the process that the first limiting plate and the second limiting plate are close to each other and separated from each other. And the tabs can be inserted into and separated from the limiting grooves. According to the utility model, the battery cell, the tab and the PCB can be limited, the consistency of battery cell stacking, tab bending and tab welding processes is ensured, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of battery assembly, in particular to a limiting tooling for battery cell grouping. Background Art

[0002] When producing a soft-pack battery cell module, the tabs need to be bent and welded according to the module layout method to achieve the series-parallel grouping form of the module. Since the grouping process of soft-pack battery cells usually adopts the method of manually stacking the battery cells and manually bending the tabs and then welding them to a PCB (printed circuit board), the consistency of the battery cell stacking, tab bending, and tab welding processes cannot be guaranteed. In the prior art, auxiliary tooling is often used for auxiliary operations, but the commonly used auxiliary tooling generally has the following several defects: the structure is relatively complex, and repetitive operation of the tooling is required; the battery cell body is not effectively limited, and the efficiency of battery cell stacking is not high; the tab welding needs to be transferred to other tooling, and the process compatibility is not high. Summary of the Utility Model

[0003] In view of this, the utility model provides a limiting tooling for battery cell grouping, which has a simple structure and is convenient to operate, can limit the battery cells and tabs, ensure the consistency of the battery cell stacking, tab bending, and tab welding processes, and improve the production efficiency.

[0004] A limiting tooling for battery cell grouping provided by the utility model includes a limiting frame, a first limiting plate, and a second limiting plate. The top of the limiting frame has an opening, and a frame door that can be opened and locked is provided on the side. The battery cells are arranged inside the limiting frame. The first limiting plate and the second limiting plate are arranged on the top of the limiting frame, and the first limiting plate and the second limiting plate can be locked and opened. Limiting grooves are provided on the first limiting plate and the second limiting plate. Tabs are provided on the top of the battery cells. When the first limiting plate and the second limiting plate approach and separate from each other, the tabs can be inserted into and detached from the limiting grooves.

[0005] Further, the limiting frame includes a bottom plate and a plurality of side plates. The plurality of side plates and the frame door are vertically arranged on the bottom plate around the periphery of the battery cells. One side of the frame door is hinged to the adjacent side plate, and the other side of the frame door is locked and opened with the adjacent side plate through a first locking device.

[0006] Further, the side plates include a first side plate, a second side plate, and a third side plate. The first side plate and the frame door are arranged parallel to the length direction of the battery cells, and the first side plate and the frame door are arranged opposite to each other. The second side plate and the third side plate are arranged parallel to the width direction of the battery cells, and the second side plate and the third side plate are arranged opposite to each other.

[0007] Further, the first side plate and the third side plate are fixed on the bottom plate. One side of the first side plate close to the third side plate is perpendicular and fixedly connected to one side of the third side plate. The other side of the third side plate is perpendicular and hinged to one side of the frame door. The other side of the frame door and the second side plate are locked and opened by a first locking device.

[0008] Further, the height of the second side plate is lower than the heights of the first side plate and the third side plate. A clamping groove is provided on the bottom plate, and the second side plate is detachably mounted on the bottom plate through the clamping groove.

[0009] Further, the first locking device includes a first lock catch and a first lock hook. The first lock catch is mounted on the frame door, and the first lock hook is mounted on the second side plate.

[0010] Further, the first limiting plate and the second limiting plate include side plates and a plurality of positioning plates. The plurality of positioning plates are arranged inside the side plates, and the plurality of positioning plates are arranged at intervals along the length directions of the first limiting plate and the second limiting plate. A limiting groove is formed between two adjacent positioning plates. The first limiting plate and the second limiting plate are locked and separated by a second locking device.

[0011] Further, the top surface height of the positioning plate is lower than the top surface height of the side plate. The PCB board is arranged on the plurality of positioning plates, and a plurality of long grooves corresponding to the limiting grooves are provided on the PCB board.

[0012] Further, the second locking device includes a second lock catch and a second lock hook. The second lock catch is mounted on the first limiting plate, and the second lock hook is mounted on the second limiting plate.

[0013] Further, the width of the positioning plate is smaller than the distance between two adjacent ear tabs, and the width of the limiting groove is larger than the thickness of the ear tab.

[0014] Compared with the existing technology, the utility model has the following beneficial technical effects:

[0015] A limiting tool for battery cell grouping provided by the present utility model is provided with a limiting frame, a first limiting plate and a second limiting plate. Among them, the limiting frame can limit the battery cells, facilitating the stacking of the battery cells. During the locking process of the frame door, a pre-tightening force can also be provided to the battery cells to ensure the dimensional requirements of the battery module. The limiting grooves in the first limiting plate and the second limiting plate can not only comb the ear tabs, facilitating the bending of the ear tabs, but also limit the ear tabs. The PCB board is arranged on the first limiting plate and the second limiting plate. During the locking process of the first limiting plate and the second limiting plate, the PCB board can be limited to ensure the welding accuracy between the ear tabs and the PCB board. In short, the limiting tool provided by the present utility model has a simple structure and is easy to operate. It can simultaneously realize battery cell stacking, ear tab bending and ear tab welding, and can ensure the consistency of battery cell stacking, ear tab bending and ear tab welding, improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a limiting tool for battery cell grouping according to the present utility model;

[0017] Figure 2 is a schematic structural diagram of the battery cell limiting in the limiting frame according to the present utility model;

[0018] Figure 3 is Figure 2 a schematic structural diagram of the frame door opened in

[0019] Figure 4 is a schematic structural diagram of the limiting frame according to the present utility model;

[0020] Figure 5 is a schematic installation structural diagram among the PCB board, the first limiting plate, the second limiting plate and the ear tabs according to the present utility model;

[0021] Figure 6 is a schematic structural diagram of the first limiting plate according to the present utility model;

[0022] Figure 7 is a schematic structural diagram of the second limiting plate according to the present utility model;

[0023] Figure 8 is a schematic structural diagram of the PCB board according to the present utility model.

[0024] Wherein: 10 - limiting frame; 11 - frame door; 12 - bottom plate; 13 - side plate; 131 - first side plate; 132 - second side plate; 133 - third side plate; 20a - first limiting plate; 20b - second limiting plate; 21 - limiting groove; 22 - edge plate; 23 - positioning plate; 30 - battery cell; 31 - tab; 40 - first locking device; 41 - first lock; 42 - first hook; 50 - second locking device; 51 - first lock; 52 - second hook; 60 - PCB board; 61 - long slot. Specific embodiments

[0025] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationship indicated in this description is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the parts or elements referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0027] Please refer to Figure 1 , a limiting tooling for battery cell grouping provided by the present invention includes a limiting frame 10, a first limiting plate 20a, and a second limiting plate 20b. The top of the limiting frame 10 has an opening, and a frame door 11 that can be opened and locked is provided on the side. The battery cells 30 are arranged inside the limiting frame 10. The first limiting plate 20a and the second limiting plate 20b are arranged on the top of the limiting frame 10, and can be locked and opened between the first limiting plate 20a and the second limiting plate 20b. Limiting grooves 21 are provided on the first limiting plate 20a and the second limiting plate 20b. Tabs 31 are provided on the top of the battery cells 30. During the process of the first limiting plate 20a and the second limiting plate 20b approaching and separating from each other, the tabs 31 can be inserted into and disengaged from the limiting grooves 21. For the limiting tooling provided by the present invention, wherein, the limiting frame 10 can limit the battery cells 30, facilitating the stacking of the battery cells 30. The frame door 11 can also provide a pre-tightening force to the battery cells 30 during the locking process, ensuring the dimensional requirements of the battery module. Since the tabs 31 need to be bent and welded to the PCB board 60 during the grouping of the battery cells 30, when the number of battery cells 30 is large, manually bending the tabs 31 will cause chaos. The limiting grooves 21 in the first limiting plate 20a and the second limiting plate 20b can not only sort out the tabs 31, facilitating the bending of the tabs 31, but also limit the tabs 31, ensuring the welding accuracy between the tabs 31 and the PCB board 50. Therefore, the present invention can improve the consistency of the stacking, tab bending, and tab welding processes of the battery cells 30, and improve the production efficiency.

[0028] Please refer to Figures 2 - 4 , the limiting frame 10 includes a bottom plate 12 and a plurality of side plates 13. The plurality of side plates 13 and the frame door 11 are vertically arranged on the bottom plate 12 around the periphery of the battery cell 30. One side of the frame door 11 is hinged to its adjacent side plate 13, and the other side of the frame door 11 is locked and opened with its adjacent side plate 13 through a first locking device 40. When the battery cells 30 are grouped, the frame door 11 is opened, and then the plurality of battery cells 30 are arranged in the limiting frame 10 according to the series-parallel combination mode of the module. After the arrangement is completed, the frame door 11 is locked to provide a pre-tightening force to the battery cells 30 to ensure the dimensional requirements of the battery module.

[0029] Specifically, the side plate 13 includes a first side plate 131, a second side plate 132, and a third side plate 133. The first side plate 131 and the frame door 11 are arranged parallel to the length direction of the battery cell 30, and the first side plate 131 and the frame door 11 are arranged opposite to each other. The second side plate 132 and the third side plate 133 are arranged parallel to the width direction of the battery cell 30, and the second side plate 132 and the third side plate 133 are arranged opposite to each other. The first side plate 131 and the third side plate 133 are fixed on the bottom plate 12. One side of the first side plate 131 close to the third side plate 133 is perpendicular and fixedly connected to one side of the third side plate 133. The other side of the third side plate 133 is perpendicular and hinged to one side of the frame door 11. That is, the frame door 11 can rotate relative to the third side plate 133 to facilitate opening the frame door 11. The other side of the frame door 11 is locked and opened with the second side plate 132 through the first locking device 40, and the second side plate 132 is detachably installed on the bottom plate 12.

[0030] Furthermore, the first side plate 131, the third side plate 133, and the frame door 11 have the same height, and the height of the second side plate 132 is lower than the height of the first side plate 131, the third side plate 133, and the frame door 11. During the process of grouping the battery cells 30, the second side plate 132 can be detached, and the frame door 11 can be opened. Only the bottom plate 12, the first side plate 131, and the third side plate 133 are required to provide support force to the battery cells 30. The detachment of the second side plate 132 and the opening of the frame door 11 can provide a large operating space for stacking the battery cells 30, facilitating rapid stacking. After the stacking of the battery cells 30 is completed, the second side plate 132 is installed on the bottom plate 12, and the frame door 11 is locked. The height setting of the second side plate 132 is convenient for observing the situation of the battery cells 30 inside the limiting frame 10 and making timely adjustments.

[0031] Further, a clamping groove (not shown in the figure) is provided on the bottom plate 12, and the second side plate 132 is detachably mounted on the bottom plate 12 by inserting the bottom thereof into the clamping groove. When disassembling, the second side plate 132 can be removed from the clamping groove. It should be noted that the second side plate 132 of the present utility model can also be installed in a hinged manner, that is, the bottom of the second side plate 132 is hinged to the bottom plate 12. That is to say, the second side plate 132 can be turned outward and inward relative to the bottom plate 12. When the battery cells 30 are grouped, the second side plate 132 can be turned outward, and the frame door 11 can be opened to perform the operation of stacking the battery cells 30. After completion, the second side plate 132 is turned inward to restore to the original position. The first locking device 40 includes a first lock catch 41 and a first lock hook 42. The first lock catch 41 is installed on the frame door 11, and the first lock hook 42 is installed on the second side plate 132. The frame door 11 is locked and opened with the second side plate 132 through the cooperation of the first lock catch 41 and the first lock hook 42.

[0032] Please refer to Figures 5 - 7 , both the first limiting plate 20a and the second limiting plate 20b include a side plate 22 and a plurality of positioning plates 23. The side plate 22 of the first limiting plate 20a is integrally in a C-shaped structure with the opening facing the second limiting plate 20b, and the side plate 22 of the second limiting plate 20b is integrally in a C-shaped structure with the opening facing the first limiting plate 20a. The plurality of positioning plates 23 are arranged at intervals along the length direction of the first limiting plate 20a and the second limiting plate 20b inside the side plate 22, and the positioning plates 23 on the first limiting plate 20a correspond to the positioning plates 23 on the second limiting plate 20b one by one. A limiting groove 21 is formed between two adjacent positioning plates 23. The first limiting plate 20a and the second limiting plate 20b are locked and separated through the second locking device 50.

[0033] Please refer to Figure 8 , the position of the positioning plate 23 is correspondingly arranged with the position between two adjacent ear tabs 31, and the width of the positioning plate 23 is smaller than the distance between two adjacent ear tabs 31, which is convenient for the positioning plate 23 to smoothly insert into the gap between two adjacent ear tabs 31 when the first limiting plate 20a and the second limiting plate 20b approach each other. After the position of the positioning plate 23 is determined, and because the width of the limiting groove 21 is greater than the thickness of the ear tab 31, therefore, the ear tab 31 can smoothly insert into the limiting groove 21, and the position of the ear tab 21 is also determined, and the side wall of the positioning plate 23 will not cause wear to the ear tab 31. The setting of the limiting groove 21 can not only comb the ear tab 31 to facilitate the bending of the ear tab 31, but also limit the ear tab 31 to ensure the welding accuracy between the ear tab 31 and the PCB board 60.

[0034] Further, the second locking device 50 includes a second latch 51 and a second locking hook 52. The second latch 51 is installed on the first limiting plate 20a, and the second locking hook 52 is installed on the second limiting plate 20b. The top surface height of the positioning plate 23 is lower than the top surface height of the side plate 22. The PCB board 60 is arranged on a plurality of positioning plates 23. When the first limiting plate 20a and the second limiting plate 20b approach each other, the tab 31 is inserted into the limiting groove 21. Since the PCB board 60 is also provided with a long groove 61 corresponding to the limiting groove 21, after the tabs 31 are sorted out, the PCB board 60 can be placed on the first limiting plate 20a and the second limiting plate 20b, and the tab 31 passes through the long groove 61 from bottom to top. At this time, the first limiting plate 20a and the second limiting plate 20b can be locked, the periphery of the PCB board 60 abuts against the side plate 22, the position of the PCB board 60 is limited by the first limiting plate 20a and the second limiting plate 20b. After the positions of the tab 31 and the PCB board 60 are determined, the tab 31 can be manually bent. After the tab 31 is bent, the second latch 51 and the second locking hook 52 are opened, the first limiting plate 20a and the second limiting plate 20b are separated and removed from the limiting frame 10, and finally transferred to the welding place to weld the tab 31 to the PCB board 60.

[0035] As can be known from the above description, a limiting tooling for battery cell grouping provided by the present utility model is provided with a limiting frame 10, a first limiting plate 20a and a second limiting plate 20b. Among them, the limiting frame 10 can limit the battery cell 30, which is convenient for stacking of the battery cells 30. The frame door 11 can also provide a pre-tightening force to the battery cell 30 during the locking process, ensuring the dimensional requirements of the battery module; the limiting groove 21 in the first limiting plate 20a and the second limiting plate 20b can not only sort out the tabs 31, which is convenient for bending the tabs 31, but also limit the tabs 31. The PCB board 60 is arranged on the first limiting plate 20a and the second limiting plate 20b. During the locking process of the first limiting plate 20a and the second limiting plate 20b, the PCB board 60 can be limited, ensuring the welding accuracy between the tab 31 and the PCB board 60; in short, the limiting tooling provided by the present utility model has a simple structure and is convenient to operate, and can simultaneously realize the stacking of the battery cells 30, the bending of the tabs 31, and the welding of the tabs 31, and can ensure the consistency of the stacking of the battery cells 30, the bending of the tabs 31, and the welding of the tabs 31, improving the production efficiency.

[0036] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A limiting tooling for battery cell grouping, comprising a limiting frame (10), a first limiting plate (20a), and a second limiting plate (20b). The top of the limiting frame (10) has an opening, and a frame door (11) that can be opened and locked is provided on the side. The battery cells (30) are arranged inside the limiting frame (10). The first limiting plate (20a) and the second limiting plate (20b) are arranged on the top of the limiting frame (10), and can be locked and opened between the first limiting plate (20a) and the second limiting plate (20b). Limiting grooves (21) are provided on the first limiting plate (20a) and the second limiting plate (20b). The top of the battery cell (30) is provided with tabs (31). During the process of the first limiting plate (20a) and the second limiting plate (20b) approaching and separating from each other, the tabs (31) can be inserted into and detached from the limiting grooves (21).

2. The limiting tooling for battery cell grouping according to claim 1, wherein: The limiting frame (10) includes a bottom plate (12) and a plurality of side plates (13). The plurality of side plates (13) and the frame door (11) are vertically arranged on the bottom plate (12) around the battery cells (30). One side of the frame door (11) is hinged to the adjacent side plate (13), and the other side of the frame door (11) is locked and opened with the adjacent side plate (13) through a first locking device (40).

3. The limiting tooling for battery cell grouping according to claim 2, wherein: The side plates (13) include a first side plate (131), a second side plate (132), and a third side plate (133). The first side plate (131) and the frame door (11) are arranged parallel to the length direction of the battery cell (30), and the first side plate (131) and the frame door (11) are arranged opposite to each other. The second side plate (132) and the third side plate (133) are arranged parallel to the width direction of the battery cell (30), and the second side plate (132) and the third side plate (133) are arranged opposite to each other.

4. The limiting tooling for battery cell grouping according to claim 3, wherein: The first side plate (131) and the third side plate (133) are fixed on the bottom plate (12). One side of the first side plate (131) close to the third side plate (133) is perpendicular and fixedly connected to one side of the third side plate (133). The other side of the third side plate (133) is perpendicular and hinged to one side of the frame door (11). The other side of the frame door (11) is locked and opened with the second side plate (132) through the first locking device (40).

5. The limiting tooling for battery cell grouping according to claim 3, characterized in that: The height of the second side plate (132) is lower than the heights of the first side plate (131) and the third side plate (133). A clamping groove is provided on the bottom plate (12), and the second side plate (132) is detachably installed on the bottom plate (12) through the clamping groove.

6. The limiting tooling for battery cell grouping according to claim 3, characterized in that: The first locking device (40) includes a first lock catch (41) and a first lock hook (42). The first lock catch (41) is installed on the frame door (11), and the first lock hook (42) is installed on the second side plate (132).

7. The limiting tooling for battery cell grouping according to claim 1, characterized in that: The first limiting plate (20a) and the second limiting plate (20b) include side plates (22) and a plurality of positioning plates (23). The plurality of positioning plates (23) are arranged inside the side plates (22), and the plurality of positioning plates (23) are arranged at intervals along the length direction of the first limiting plate (20a) and the second limiting plate (20b). A limiting groove (21) is formed between two adjacent positioning plates (23). The first limiting plate (20a) and the second limiting plate (20b) are locked and separated by a second locking device (50).

8. The limiting tooling for battery cell grouping according to claim 7, wherein: The top surface height of the positioning plate (23) is lower than the top surface height of the side plate (22). The PCB board (60) is arranged on the plurality of positioning plates (23), and a plurality of long grooves (61) corresponding to the limiting grooves (21) are provided on the PCB board (60).

9. The limiting tooling for battery cell grouping according to claim 7, characterized in that: The second locking device (50) includes a second lock catch (51) and a second lock hook (52). The second lock catch (51) is installed on the first limiting plate (20a), and the second lock hook (52) is installed on the second limiting plate (20b).

10. The limiting tooling for battery cell grouping according to claim 7, wherein: The width of the positioning plate (23) is smaller than the distance between two adjacent tab ears (31), and the width of the limiting groove (21) is larger than the thickness of the tab ear (31).

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