Welding auxiliary tool for soft package battery tabs

Abstract

The utility model discloses an auxiliary welding tool for soft package battery tabs. The auxiliary welding tool comprises a supporting base, a tab pressing mechanism and a tab centering mechanism. A battery is placed in the supporting seat; the tab pressing mechanism comprises a pressing plate; the pressing plate is driven by a movable plate to move up and down so as to press the tab; the tab centering mechanism comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are located in the middle of the upper portion of the supporting base, and the first clamping plate and the second clamping plate are arranged in parallel and push a tab so that the tab can be attached to the battery in the middle; according to the welding auxiliary tool for the soft package battery tabs, through the arranged tab pressing mechanism, the tabs can be pressed through the pressing plate after the tabs are placed on the battery; the tab centering mechanism is arranged, so that the tab can be centered and pressed on one side of the battery; deflection and movement of the tabs in the welding process are avoided, and the welding accuracy of the tabs of the soft package battery module is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ear welding auxiliary tooling, and particularly relates to an ear welding auxiliary tooling for soft-pack batteries. Background Art

[0002] The statements herein only provide background art related to the utility model and do not necessarily constitute prior art.

[0003] As is well known, a battery module is a unit composed of multiple battery cells combined in series and parallel, aiming to provide higher voltage and capacity to meet the electrical energy requirements of different applications; a battery module usually includes components such as battery cells, connectors, and housings; the main function of a battery module is to connect multiple battery cells together to increase the voltage and energy storage capacity of the battery system.

[0004] During the traditional ear welding process, when welding the ears of a soft-pack battery module, it is necessary to place the ears in contact with the battery and then place them at the welding machine for welding. However, it is difficult for manual operation to center and fit the relatively small-sized ears on the battery for welding, thus affecting the welding accuracy. In the prior art, the Chinese utility model patent CN211136043U discloses a lithium battery ear welding auxiliary tooling, which realizes the positioning of the ears and the core package through structures such as ear positioning blocks and core package positioning blocks arranged on the base to fix the welding position. However, with this structure, workers need to place the ears according to experience and then position them through the corresponding ear positioning blocks, and there may be deviations in the placement positions of the ears. Especially when some ears need to be welded in the middle position on the side of the battery, it is difficult to ensure that the ears always remain in the middle position on the side of the battery during welding. When the ears are skewed, it is impossible to accurately adjust the ears, resulting in deviations in the ear welding position and ultimately affecting the product qualification rate and causing material waste. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an ear welding auxiliary tooling for soft-pack batteries, which can avoid the deflection and movement of the ears during the welding process and improve the accuracy of welding the ears of the soft-pack battery module.

[0006] To achieve the above purpose, the utility model is realized through the following technical solutions:

[0007] In a first aspect, an embodiment of the present utility model provides a welding auxiliary tooling for the tabs of a soft-pack battery, which includes a support base, a tab pressing mechanism, and a tab centering mechanism; a battery is placed inside the support base; the tab pressing mechanism includes a pressing plate, and the pressing plate drives the movement of an active plate to move up and down to press the tabs; the tab centering mechanism includes a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are located at the middle position above the support base, the first clamping plate and the second clamping plate are arranged in parallel, and push the tabs so that the tabs can be centered and attached to the battery.

[0008] As a further technical solution, a groove is provided on the upper surface of the support base, and the width of the groove is the same as the width of the battery to be welded.

[0009] As a further technical solution, the side surface in the length direction of the support base is connected to a bracket through a plate member, the bracket is perpendicular to the plate member, and a handle is also connected to the plate member.

[0010] As a further technical solution, the pressing plate is fixedly connected to one end of the active plate, a slider is provided at the other end of the active plate, and the slider cooperates with a chute on the bracket, and the slider can move up and down in the chute.

[0011] As a further technical solution, a fixing block with a threaded hole is fixed at the upper end of the chute on the bracket, a threaded rod passes through the threaded hole on the fixing block, and the bottom end of the threaded rod is fixedly connected to the upper surface of the active plate.

[0012] As a further technical solution, one end of the first clamping plate is movably sleeved on a first rod body, and the other end is fixedly sleeved on a second rod body; one end of the second clamping plate is fixedly sleeved on the first rod body, and the other end is movably sleeved on the second rod body.

[0013] As a further technical solution, both the first rod body and the second rod body pass through circular holes on an L-shaped support plate, and the first rod body and the second rod body are movably connected to the L-shaped support plate.

[0014] As a further technical solution, a stop block is installed at one end of the second rod body close to the L-shaped support plate, and a spring is sleeved on the second rod body between the stop block and the L-shaped support plate, and both ends of the spring are fixedly connected to the stop block and the L-shaped support plate respectively.

[0015] As a further technical solution, cylindrical blocks are provided on both the first rod body and the second rod body, the first rod body and the second rod body are connected by a connecting arm, and the middle position of the connecting arm is rotatably installed on a connecting plate, and the connecting plate is fixedly connected to the L-shaped support plate.

[0016] As a further technical solution, two long strip holes are provided on the connecting arm, and the cylindrical blocks on the first rod body and the second rod body are respectively located in the two long strip holes of the connecting arm and can slide in the long strip holes.

[0017] The beneficial effects of the above embodiments of the present utility model are as follows:

[0018] The welding auxiliary tooling for the tabs of the soft-pack battery provided by the present utility model can, through the provided tab pressing mechanism, press the tabs against the battery by means of the pressing plate after placing the tabs on the battery, preventing the tabs from deflecting during the welding process; through the provided tab centering mechanism, after the second rod body moves, it can drive the first rod body to move in the opposite direction through the connecting arm, so that the first clamping plate and the second clamping plate can push the tabs to the center position of the battery, and further, after the threaded rod is tightened, it can drive the pressing plate to center and press the tabs on one side of the battery; through the above settings, the deflection and movement of the tabs during the welding process are avoided, and the accuracy of welding the tabs of the soft-pack battery module is improved.

[0019] The welding auxiliary tooling for the tabs of the soft-pack battery provided by the present utility model is applicable to both the case of welding two tabs on the battery and the case of centrally welding one tab on the battery, improving the applicability of the device. Description of the Drawings

[0020] The attached drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0021] Figure 1 is a schematic structural diagram of the welding auxiliary tooling for the tabs of the soft-pack battery of the present utility model;

[0022] Figure 2 is Figure 1 the enlarged structural diagram at A in

[0023] Figure 3 is a schematic structural diagram of the pressing mechanism in the welding auxiliary tooling for the tabs of the soft-pack battery module of the present utility model;

[0024] Figure 4 is Figure 3 the enlarged structural diagram at B in

[0025] The schematic diagrams are only for illustration;

[0026] Among them:

[0027] 1. Tab pressing mechanism; 10. Support seat; 11. Bracket; 12. Threaded rod; 13. Movable plate; 14. Convex block; 15. Pressing plate; 16. Chute; 17. Handle;

[0028] 2. Tab centering mechanism; 20. L-shaped support plate; 21. First rod body; 22. Second rod body; 23. Connecting plate; 24. Connecting arm; 25. Long strip hole; 26. Cylindrical block; 27. First clamping plate; 28. Second clamping plate; 29. Spring; 201. Stopper; 202. Pull tab. Detailed implementation mode

[0029] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanations of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0030] Embodiment 1

[0031] In a typical implementation mode of the present invention, as Figures 1-4 shown, a welding auxiliary tooling for the tabs of a soft-pack battery is provided, including a support base 10, a tab pressing mechanism 1, and a tab centering mechanism 2; the battery is placed inside the support base 10; the tab pressing mechanism 1 includes a pressing plate 15, and the pressing plate 15 is driven by a movable plate 13 to move up and down to press the tabs; the tab centering mechanism 2 includes a first clamping plate 27 and a second clamping plate 28, the first clamping plate 27 and the second clamping plate 28 are located at the middle position above the support base 10, the first clamping plate 27 and the second clamping plate 28 are arranged in parallel to push the tabs so that the tabs can be centered and attached to the battery.

[0032] As Figure 1 and Figure 3 shown, a groove is provided on the upper surface of the support base 10, and the width of the groove is the same as the width of the battery to be welded. The battery is limited by the groove on the support base 10, which can prevent the battery from shifting during the welding of the tabs. Specifically, corresponding grooves can be set according to the sizes of different batteries.

[0033] Furthermore, the side surface in the length direction of the support base 10 is connected to a bracket 11 through a plate member, so that there is a certain distance between the bracket 11 and the end of the support base 10 as the tab welding space. The bracket 11 is perpendicular to the plate member, and a handle 17 is also connected to the plate member for facilitating the holding of the entire device.

[0034] As Figure 4 shown, the pressing plate 15 is fixedly connected to one end of the movable plate 13, a slider is provided at the other end of the movable plate 13, and the slider cooperates with a chute 16 on the bracket 11. The slider can move up and down in the chute 16, thereby realizing the up and down movement of the movable plate 13 and the pressing plate 15. The chute 16 plays a guiding role in the up and down movement of the movable plate 13 and the pressing plate 15.

[0035] Further, a fixing block with a threaded hole is fixed at the upper end of the chute 16 on the bracket 11. The threaded rod 12 passes through the threaded hole in the fixing block, and the bottom end of the threaded rod 12 is fixedly connected to the upper surface of the movable plate 13. Since the fixing block is fixedly installed with the bracket, when the threaded rod 12 is rotated, the bottom end of the threaded rod 12 moves upward or downward, thereby driving the movable plate 13 and the pressing plate 15 to move upward or downward. To facilitate the rotation of the threaded rod 12, a convex block 14 is fixedly connected to the top end of the threaded rod 12.

[0036] In this embodiment, the width of the movable plate 13 is smaller than the width of the pressing plate 15. The movable plate 13 is connected to the middle position of the width surface of the pressing plate, forming a T-shaped structure, so that the two ear tabs to be welded are exposed from both sides of the movable plate for welding. The width of the movable plate is the same as the distance between the two ear tabs, realizing the positioning of the two placed ear tabs.

[0037] As Figure 1 shown, one end of the first clamping plate 27 is movably sleeved on the first rod 21, and the other end is fixedly sleeved on the second rod 22; one end of the second clamping plate 28 is fixedly sleeved on the first rod 21, and the other end is movably sleeved on the second rod 22; the first clamping plate 27 and the second clamping plate 28 are vertically arranged perpendicular to the upper surface of the support base 10 and are separated by a certain distance. The distance between the bottom surfaces of the first clamping plate 27 and the second clamping plate 18 and the upper surface of the support base 10 is equal to the thickness of the battery; the first rod 21 and the second rod 22 are arranged in parallel, and the rod and the clamping plate are vertically arranged.

[0038] Further, both the first rod 21 and the second rod 22 pass through the round holes on the L-shaped support plate 20, and the first rod 21 and the second rod 22 are movably connected to the L-shaped support plate. As Figure 2 shown, a stop block 201 is installed at one end of the second rod 22 close to the L-shaped support plate 20. A spring 29 is sleeved on the second rod between the stop block 201 and the L-shaped support plate 20, and both ends of the spring 29 are fixedly connected to the stop block 201 and the L-shaped support plate 20 respectively. To facilitate the pulling of the second rod 22, a pull ear 202 is fixedly connected to the side of the stop block 201 away from the second rod 22.

[0039] Further, cylindrical blocks 26 are arranged on both the first rod 21 and the second rod 22. The first rod 21 and the second rod 22 are connected by a connecting arm 24. The middle position of the connecting arm 24 is rotatably installed on a connecting plate 23, and the connecting plate 23 is fixedly connected to the L-shaped support plate 20.

[0040] Further, two long strip holes 25 are arranged on the connecting arm 24. The cylindrical blocks 26 on the first rod 21 and the second rod 22 are respectively located in the two long strip holes 25 of the connecting arm and can slide in the long strip holes 25.

[0041] By pulling the lug 202 at the end of the second rod body 22 outwards, after the second rod body 22 moves, it can drive the cylindrical block on the second rod body to slide in the corresponding long hole 25, so that the connecting arm 24 can drive the first rod body 21 to move in the reverse direction through the cylindrical block on the first rod body, enabling the first clamping plate 27 and the second clamping plate 28 to move away from each other. When the lug 202 is released, under the action of the spring, the second rod body 22 resets, thereby driving the corresponding first clamping plate 27, second clamping plate 28 and second rod body 22 to perform corresponding movements, enabling the first clamping plate 27 and the second clamping plate 28 to move closer to each other. In the initial state, the distance between the first clamping plate 27 and the second clamping plate 28 is equal to the distance of the pole piece to be centered and welded.

[0042] In order to facilitate the first clamping plate 27 and the second clamping plate 28 to push the pole ear without being affected by the battery, the distances between the first clamping plate 27 and the second clamping plate 28 and the support seat 10 are equal to the thickness of a single battery. The elastic force of the spring 29 can prevent the first clamping plate 27 and the second clamping plate 28 from deforming the pole ear.

[0043] When the welding auxiliary tooling for the pole ear of the soft-pack battery provided in this embodiment is in use, after the battery is placed on the support seat 10, the pole ear can be attached to one side of the battery, and by rotating the threaded rod 12, the movable plate 13 can be driven to move, so that the pressing plate 15 can press the pole ear on the battery under the action of the movable plate 13, so that a section of the battery and the pole ear extending out of the support seat 10 can be welded by a welding machine.

[0044] When it is necessary to make the pole ear centered and attached to one side of the battery, the second rod body 22 can be pulled first before the pressing plate 15 presses down, so that the pole ear can be placed on one side of the battery. When the second rod body 22 is released, it can drive the first clamping plate 27 to move towards the second clamping plate 28 under the reset action of the spring 29, and the first rod body 21 can drive the second clamping plate 28 to move towards the first clamping plate 27 under the rotation action of the connecting arm 24. Furthermore, the first clamping plate 27 and the second clamping plate 28 can push the pole ear, so that the pole ear can be centered and attached to one side of the battery. Then, by tightening the threaded rod 12, the pressing plate 15 can be driven to press the centered pole ear on the battery. During welding, first weld the positions of the centered pole ear on both sides of the movable plate 13, and then remove the pressing plate 15 to weld the remaining positions.

[0045] The above-mentioned welding auxiliary tooling for the tabs of the soft-pack battery enables the second rod body 22 to drive the first rod body 21 to move in the opposite direction through the connecting arm 24 after moving, through the settings of the tab pressing mechanism 1 and the tab centering mechanism 2. As a result, the first clamping plate 27 and the second clamping plate 28 can push the tab to the center position of the battery, and further enable the threaded rod 12 to drive the pressing plate 15 to center and press the tab on one side of the battery after being tightened. Through the above settings, the accuracy of welding the tabs of the soft-pack battery is improved.

[0046] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A welding auxiliary tool for a soft-pack battery tab, characterized in that: It includes a support seat, a tab pressing mechanism and a tab centering mechanism; a battery is placed in the support seat; the tab pressing mechanism includes a pressing plate, which is driven by a movable plate to move up and down to press the tab; the tab centering mechanism includes a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are located in the upper middle position of the support seat, the first clamping plate and the second clamping plate are arranged in parallel, and the tab is pushed so that the tab can be centered and fit on the battery.

2. The welding auxiliary tooling for the soft pack battery tab according to claim 1, characterized in that: A groove is arranged on the upper surface of the support seat, and the width of the groove is the same as the width of the battery to be welded.

3. The welding auxiliary tooling for the soft pack battery tab according to claim 2, characterized in that: The side surface of the support seat in the length direction is connected to the bracket through a plate, the bracket and the plate are arranged vertically, and a handle is also connected to the plate.

4. The welding auxiliary tooling for the soft pack battery tab according to claim 1, characterized in that: The pressing plate is fixedly connected to one end of the movable plate, and a sliding block is arranged at the other end of the movable plate. The sliding block cooperates with a sliding groove on the bracket, and the sliding block can move up and down in the sliding groove.

5. The welding auxiliary tooling for the soft pack battery tab according to claim 4, characterized in that: A fixing block with a threaded hole is fixed to the upper end of the slide groove on the bracket, a threaded rod passes through the threaded hole on the fixing block, and the bottom end of the threaded rod is fixedly connected to the upper surface of the movable plate.

6. The welding auxiliary tooling for the soft pack battery tab according to claim 1, characterized in that: One end of the first clamping plate is movably sleeved on the first rod body, and the other end is fixedly sleeved on the second rod body; one end of the second clamping plate is fixedly sleeved on the first rod body, and the other end is movably sleeved on the second rod body.

7. The welding auxiliary tooling for the soft-pack battery tab according to claim 6, characterized in that: The first rod body and the second rod body both pass through the circular holes on the L-shaped supporting plate, and the first rod body and the second rod body are movably connected to the L-shaped supporting plate.

8. The welding auxiliary tooling for the soft pack battery tab according to claim 7, characterized in that: A stopper is installed at one end of the second rod body close to the L-shaped support plate, a spring is sleeved on the second rod body between the stopper and the L-shaped support plate, and two ends of the spring are fixedly connected to the stopper and the L-shaped support plate respectively.

9. The welding auxiliary tooling for the soft pack battery tab according to claim 6, characterized in that: The first rod body and the second rod body are both provided with cylindrical blocks, and the first rod body and the second rod body are connected by a connecting arm, and the middle position of the connecting arm is rotatably mounted on a connecting plate, and the connecting plate is fixedly connected to the L-shaped supporting plate.

10. The welding auxiliary tooling for the soft pack battery tab according to claim 9, characterized in that: The connecting arm is provided with two long holes, and the cylindrical blocks on the first rod body and the second rod body are respectively located in the two long holes of the connecting arm and can slide in the long holes.

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