Cylindrical battery cell tab shaping mechanism and tab shaping production line

Abstract

The utility model relates to the technical field of battery pole ear processing, and discloses a cylindrical battery cell pole ear shaping mechanism and a pole ear shaping assembly line. The cylindrical battery cell pole ear shaping mechanism is used for simultaneously shaping the positive pole ear and the negative pole ear of the battery cell. The cylindrical battery cell pole ear shaping mechanism comprises a pole ear positioning module, a positive pole ear clamping jaw assembly and a negative pole ear clamping jaw assembly. The negative pole ear clamping jaw assembly comprises a negative pole ear clamping jaw, and the negative pole ear clamping jaw is provided with a hollow cylindrical inner clamping jaw and two-petal claws wrapping the inner clamping jaw, and the two-petal claws are arranged in a semicircular shape. The utility model arranges the semicircular two-petal claw to open or close relative to the inner clamping jaw, and can include the negative pole ear at any position of the outer ring of the battery cell, and clamps the negative pole ear between the two-petal claws and the inner clamping jaw, so that the positive pole ear and the negative pole ear can be clamped and shaped at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of battery tab processing, in particular to a cylindrical battery core tab shaping mechanism and a tab shaping assembly line. Background Art

[0002] The tab is an important part of the battery cell. It connects the positive and negative electrodes of the battery cell and plays a role in transmitting current and stabilizing the battery cell. However, during the manufacturing process, the tab may touch the side mechanism, baffle, pipeline, etc., causing deformation, which affects the performance and quality of the battery cell.

[0003] The tab of a cylindrical battery cell is usually connected to the polar coating of the battery cell at one end, and the other end is led out from the battery cell to the end of the battery cell. The lead-out position is not fixed at the end of the battery cell. The positive tab clamp and the negative tab clamp of a traditional tab shaping mechanism are both configured to have two planes that can fit together. In order to straighten the deformed tab, the traditional tab shaping mechanism adjusts the positive tab of the battery cell to a predetermined position, and then clamps the positive tab with the positive tab clamp for shaping, and then adjusts the negative tab to a predetermined position, and then clamps the negative tab with the negative tab clamp for shaping, which is less efficient. Utility Model Content

[0004] The purpose of the utility model is to overcome the problem of low efficiency caused by the need to successively shape the two pole ears of a cylindrical battery cell in the prior art, and to provide a cylindrical battery cell pole ear shaping mechanism, wherein the negative pole ear clamp of the cylindrical battery cell pole ear shaping mechanism has a hollow cylindrical inner clamp and two semicircular claws wrapping the inner clamp, and the outer pole ear of the negative pole ear can be clamped between the two claws and the inner clamp at any position of the negative end of the battery cell. Therefore, after the positive pole ear of the battery cell is fixed at a predetermined position, the positive pole ear and the negative pole ear can be shaped at the same time, thereby improving the shaping efficiency.

[0005] In order to achieve the above-mentioned object, the utility model provides a cylindrical battery cell tab shaping mechanism on one hand, which is used to simultaneously shape the positive tab and the negative tab of the battery cell, and the cylindrical battery cell tab shaping mechanism comprises:

[0006] A tab positioning module, comprising a tab positioning sensor and a fixed roller assembly connected to the tab positioning sensor, for adjusting and determining the position of the positive tab;

[0007] A positive electrode tab clamp assembly is disposed on a side close to the positive electrode of the battery cell and is capable of shaping the positive electrode tab; and

[0008] A negative ear clamp assembly is arranged on one side close to the negative electrode of the battery cell, and the negative ear clamp assembly includes a negative ear clamp, which is provided with a hollow cylindrical inner clamp and two claws wrapping the inner clamp, and the two claws are arranged in a semicircular shape.

[0009] Preferably, the negative electrode ear clamp is arranged along the length direction of the battery core, and the two claws are connected to a cylinder to control the two claws to approach or move away from the internal clamp at the same time.

[0010] Preferably, an outer edge of one end of the inner clamping jaw close to the battery core is provided with a chamfer, and one end of the two-petal jaw close to the battery core is flush with a corner of the chamfer away from the battery core.

[0011] Preferably, the negative electrode ear clamp assembly further comprises a driving module 1 arranged on a side of the negative electrode ear clamp away from the battery cell, and the driving module 1 is used to drive the negative electrode ear clamp to approach or move away from the battery cell.

[0012] Preferably, the positive tab clamping jaw assembly is provided with a positive tab clamping jaw portion and a second driving module arranged on a side of the positive tab clamping jaw portion away from the battery cell, and the second driving module is used to drive the positive tab clamping jaw portion to approach or move away from the battery cell.

[0013] Preferably, the positive electrode tab clamping jaw portion comprises an upper clamping jaw, a lower clamping jaw and a cylinder, and the cylinder is used to drive the upper clamping jaw and the lower clamping jaw to move closer to or away from each other.

[0014] Preferably, the tab positioning sensor is disposed above the positive electrode side of the battery cell to detect whether the positive tab has reached a predetermined position.

[0015] Preferably, the fixed roller group includes a left fixed rubber roller, a right fixed rubber roller and an upper fixed rubber roller respectively arranged on the left side, right side and top of the battery cell by a mechanical arm, the left fixed rubber roller, the right fixed rubber roller and the upper fixed rubber roller are arranged along the length direction of the battery cell, and the mechanical arm is configured to control the rotation of the left fixed rubber roller, the right fixed rubber roller and the upper fixed rubber roller, as well as approaching or moving away from the battery cell according to the arrival signal of the positive pole ear detected by the pole ear positioning sensor.

[0016] The second aspect of the utility model provides a tab shaping assembly line, the tab shaping assembly line having the above-mentioned cylindrical battery core tab shaping mechanism;

[0017] Wherein, the tab shaping assembly line further comprises a conveyor belt, on which a plurality of bases are arranged at intervals for carrying the battery cells;

[0018] The conveyor belt is used to convey the base carrying the battery cell to the cylindrical battery cell tab shaping mechanism to perform tab shaping on the battery cell.

[0019] Preferably, the base is configured as a U-shaped plate with a thickness and an opening facing upward, and two vertical plates of the U-shaped plate are provided with V-shaped notches opening upward for supporting the battery cell.

[0020] Through the above technical scheme, the tab positioning sensor senses the position of the positive tab of the battery cell, cooperates with the fixed roller assembly to stick to the battery cell and drive the battery cell to rotate, thereby adjusting the positive tab to a predetermined position, and the fixed roller assembly then fixes the battery cell. While the positive tab clamp assembly shapes the positive tab, the two claws and the internal clamp clamp the negative tab for shaping, thereby improving the shaping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a tab shaping production line provided by the utility model;

[0022] Figure 2 It is a structural schematic diagram of a tab positioning module of a tab shaping production line provided by the utility model;

[0023] Figure 3 It is a structural schematic diagram of a positive pole lug clamping claw assembly of a pole lug shaping production line provided by the utility model;

[0024] Figure 4 It is a structural schematic diagram of a negative pole ear clamping claw assembly of a pole ear shaping production line provided by the utility model;

[0025] Figure 5 The utility model is a schematic diagram of the structure of the internal clamping jaws of a tab shaping production line.

[0026] Description of Reference Numerals

[0027] 1. Conveyor belt; 12. Base; 2. Battery cell; 21. Positive ear; 31. Ear positioning sensor; 32. Left fixed rubber roller; 33. Right fixed rubber roller; 34. Upper fixed rubber roller; 4. Negative ear jaw; 41. Internal jaw; 411. Chamfer; 42. Two-petal jaw; 43. Drive module one; 51. Upper jaw; 52. Lower jaw; 53. Drive module two. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0029] As mentioned above, the first aspect of the utility model provides a cylindrical battery cell tab shaping mechanism, which is used to simultaneously shape the positive tab and the negative tab of the cylindrical battery cell, thereby greatly improving the tab shaping efficiency.

[0030] like Figure 1As shown, the cylindrical battery cell tab shaping mechanism includes a tab positioning module, a positive tab clamping assembly, and a negative tab clamping assembly. The tab positioning module includes a tab positioning sensor 31 and a fixed roller group connected to the tab positioning sensor 31, which is used to adjust and determine the position of the positive tab 21; the positive tab clamping assembly is arranged on the side close to the positive pole of the battery cell 2 and can shape the positive tab 21; the negative tab clamping assembly is arranged on the side close to the negative pole of the battery cell 2, and the negative tab clamping assembly includes a negative tab clamping jaw 4, and the negative tab clamping jaw 4 is provided with a hollow cylindrical inner clamping jaw 41 and two claws 42 that wrap the inner clamping jaw 41, and the two claws 42 are arranged in a semicircular shape.

[0031] In the utility model, the fixed roller group rotates to adjust the battery cell 2 until the battery cell 2 turns to the pole ear positioning sensor 31 which can detect that the positive pole ear 21 has turned to the predetermined position. At this time, the fixed roller group stops rotating and switches to clamping the battery cell 2. Then, the positive pole ear clamping jaw assembly moves toward the battery cell 2, clamps the positive pole ear 21 and then moves away from the positive battery cell 2, thereby straightening the positive pole ear 21 and achieving the shaping of the positive pole ear 21. Since there is no regularity in the positional relationship between the positive ear 21 and the negative ear, the negative ear may appear at any position of the negative end of the battery cell 2. When the negative ear clamping jaw assembly shapes the negative ear, the position of the negative ear clamping jaw assembly and the size of the negative electrode clamping jaw 4 are adjusted so that the negative ear can be attached to the outer wall of the inner clamping jaw 41 in a straight line. Then the semicircular two-petal claw 42 opens relative to the inner clamping jaw 41 to cover the negative ear at any position on the outer wall of the inner clamping jaw 41. The two-petal claw 42 is then closed relative to the inner clamping jaw 41 to clamp the negative ear between the two-petal claw 42 and the inner clamping jaw 41, thereby clamping and straightening the negative ear. The inner clamping jaw 41 is set to be hollow in order to leave space for the inner negative ear close to the axis of the battery cell 2 to prevent the negative ear clamping jaw 4 from touching and squeezing the inner negative ear. The utility model only needs to fix the position of the positive ear 21 to shape the positive ear 21 and the negative ear at the same time, which greatly speeds up the shaping efficiency.

[0032] In one embodiment of the utility model, the negative electrode ear clamp 4 is arranged along the length direction of the battery cell 2, so that the negative electrode ear can fit the outer wall of the internal clamp 41 along the direction in which it is led out of the battery cell 2 with as little deflection as possible, and the two claws 42 are connected to the cylinder to control the two claws 42 to approach or move away from the internal clamp 41 at the same time, thereby clamping or loosening the negative electrode ear.

[0033] In order to further reduce the influence of the internal clamping jaw 41 on the root of the negative electrode ear, the outer edge of the internal clamping jaw 41 close to the battery cell 2 is provided with a chamfer 411, and the end of the two-petal claw 42 close to the battery cell 2 is flush with the corner of the chamfer 41 away from the battery cell 2.

[0034] In the utility model, the negative pole ear clamp assembly also includes a driving module 43 arranged on the side of the negative pole ear clamp 4 away from the battery cell 2, and the driving module 43 is used to drive the negative pole ear clamp 4 to approach or move away from the battery cell 2. When the positive pole ear 21 is fixed, the driving module 43 drives the negative pole ear clamp 4 to approach the battery cell 2. After the negative pole ear clamp 4 clamps the negative pole ear, the driving module 43 drives the negative pole ear clamp 4 away from the battery cell 2.

[0035] The positive ear clamping jaw assembly is provided with a positive ear clamping jaw part and a driving module 2 53 arranged on the side of the positive ear clamping jaw part away from the battery cell 2. The driving module 2 53 is used to drive the positive ear clamping jaw part to approach or move away from the battery cell 2. When the positive ear 21 is fixed, the driving module 2 53 drives the positive ear clamping jaw part to approach the battery cell 2. After the positive ear clamping jaw part clamps the positive ear 21, the driving module 2 53 drives the positive ear clamping jaw part away from the battery cell 2.

[0036] In the utility model, the positive pole ear clamping jaw part includes an upper clamping jaw 51, a lower clamping jaw 52 and a cylinder, and the cylinder is used to drive the upper clamping jaw 51 and the lower clamping jaw 52 to move closer to or away from each other. When the driving module 2 53 drives the positive pole ear clamping jaw part to move closer to the battery cell 2 and stop, the cylinder drives the upper clamping jaw 51 and the lower clamping jaw 52 to move closer to each other, thereby clamping the positive pole ear 21 to straighten and shape it. When the shaping of the positive pole ear 21 is completed, the cylinder drives the upper clamping jaw 51 and the lower clamping jaw 52 to move away from each other.

[0037] The tab positioning sensor 31 can be set at a position where the positive tab 21 can be detected. In a specific embodiment of the utility model, the tab positioning sensor 31 is set above the positive side of the battery cell 2. The predetermined position of the positive tab 21 is the highest point it can reach. The fixed rubber roller group rotates to drive the battery cell 2 to rotate so as to adjust the position of the positive tab 21. When the tab positioning sensor 31 detects that the positive tab 21 reaches the predetermined position, it sends a signal, and the fixed rubber roller group stops rotating and changes to press the battery cell 2. Then the positive tab 21 and the negative tab are shaped.

[0038] The fixed roller shaft group includes a left fixed rubber roller 32, a right fixed rubber roller 33, and an upper fixed rubber roller 34, which are respectively arranged on the left side, right side, and upper side of the battery cell 2 through robotic arms. The left fixed rubber roller 32, the right fixed rubber roller 33, and the upper fixed rubber roller 34 are arranged along the length direction of the battery cell 2. The robotic arms are configured to control the left fixed rubber roller 32, the right fixed rubber roller 33, and the upper fixed rubber roller 34 to rotate, and to approach or move away from the battery cell 2 according to the in-place signal of the positive ear 21 detected by the ear positioning sensor 31. The robotic arm connected to the upper fixed rubber roller 34 is arranged above the upper fixed rubber roller 34, and this robotic arm controls the upper fixed rubber roller 34 to approach or move away from the battery cell 2 by extending or shortening. The robotic arm connected to the right fixed rubber roller 33 is vertically arranged on the right side of the battery cell 2. The bottom end of this robotic arm is rotatably connected with an auxiliary arm, and this auxiliary arm rotates around the bottom end of this robotic arm to control the right fixed rubber roller 33 to approach or move away from the battery cell 2. The robotic arm connected to the left fixed rubber roller 32 is vertically arranged on the left side of the battery cell 2. The bottom end of this robotic arm is rotatably connected with an auxiliary arm, and this auxiliary arm rotates around the bottom end of this robotic arm to control the left fixed rubber roller 32 to approach or move away from the battery cell 2.

[0039] In the second aspect of the present invention, a kind of ear shaping production line is provided. The ear shaping production line has the above-mentioned cylindrical battery cell ear shaping mechanism.

[0040] Among them, the ear shaping production line further includes a conveyor belt 1. A plurality of bases 12 are arranged at intervals on the conveyor belt 1 for carrying the battery cell 2, and each base 12 carries one battery cell 2.

[0041] The conveyor belt 1 is used to convey the base 12 carrying the battery cell 2 into the cylindrical battery cell ear shaping mechanism to shape the ears of the battery cell 2. The conveyor belt 1 conveys the base 12 into the cylindrical battery cell ear shaping mechanism and pauses the transportation. The fixed rubber roller group rotates the battery cell 2 until the positive ear 21 reaches the predetermined position. Subsequently, the positive ear jaw assembly and the negative ear jaw assembly simultaneously shape the positive ear 21 and the negative ear of the battery cell 2. After the shaping is completed, the conveyor belt 1 continues to transport, transports the shaped battery cell 2 away, and conveys the next base 12 carrying the battery cell 2 into the cylindrical battery cell ear shaping mechanism to shape the ears of the battery cell 2.

[0042] In order to facilitate the rotation of the battery cell 2 and ensure the stability of the battery cell 2, the base 12 is set as a U-shaped plate with an upward opening and a thickness. V-shaped notches with upward openings are formed on the two vertical plates of the U-shaped plate for carrying the battery cell 2. Battery cells 2 with different diameters can be placed on the two V-shaped notches. By adjusting the distances between the ear positioning module, the positive ear jaw assembly, the negative ear jaw assembly, etc., the ears of battery cells 2 with different sizes can be shaped, which enhances the versatility of the present invention.

[0043] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A cylindrical battery cell tab shaping mechanism, used for simultaneously shaping a positive tab (21) and a negative tab of a battery cell (2), characterized in that: The cylindrical battery cell tab shaping mechanism comprises: A tab positioning module, comprising a tab positioning sensor (31) and a fixed roller assembly connected to the tab positioning sensor (31), and used for adjusting and determining the position of the positive tab (21); A positive electrode tab clamping claw assembly is arranged on a side close to the positive electrode of the battery cell (2) and is capable of shaping the positive electrode tab (21); and A negative electrode ear clamping claw assembly is arranged on a side close to the negative electrode of the battery cell (2), and the negative electrode ear clamping claw assembly comprises a negative electrode ear clamping claw (4), and the negative electrode ear clamping claw (4) is provided with a hollow cylindrical inner clamping claw (41) and two claws (42) wrapping the inner clamping claw (41), and the two claws (42) are arranged in a semicircular shape.

2. The cylindrical battery cell tab shaping mechanism according to claim 1, characterized in that: The negative electrode ear clamp (4) is arranged along the length direction of the battery core (2), and the two claws (42) are connected to a cylinder to control the two claws (42) to simultaneously approach or simultaneously move away from the internal clamp (41).

3. The cylindrical battery cell tab shaping mechanism according to claim 2, characterized in that: The outer edge of one end of the inner clamping jaw (41) close to the battery core (2) is provided with a chamfer (411), and one end of the two-petal jaw (42) close to the battery core (2) is flush with the corner of the chamfer (411) away from the battery core (2).

4. The cylindrical battery cell tab shaping mechanism according to claim 2, characterized in that: The negative electrode ear clamp assembly further comprises a driving module one (43) arranged on a side of the negative electrode ear clamp (4) away from the battery cell (2), wherein the driving module one (43) is used to drive the negative electrode ear clamp (4) to approach or move away from the battery cell (2).

5. The cylindrical battery cell tab shaping mechanism according to claim 1, characterized in that: The positive electrode ear clamping jaw assembly is provided with a positive electrode ear clamping jaw portion and a second driving module (53) arranged on a side of the positive electrode ear clamping jaw portion away from the battery cell (2), and the second driving module (53) is used to drive the positive electrode ear clamping jaw portion to approach or move away from the battery cell (2).

6. The cylindrical battery cell tab shaping mechanism according to claim 5, characterized in that: The positive electrode ear clamping jaw portion comprises an upper clamping jaw (51), a lower clamping jaw (52) and a cylinder, wherein the cylinder is used to drive the upper clamping jaw (51) and the lower clamping jaw (52) to move closer to or farther from each other.

7. The cylindrical battery cell tab shaping mechanism according to claim 1, characterized in that: The tab positioning sensor (31) is arranged above the positive electrode side of the battery cell (2) and is used to detect whether the positive tab (21) has reached a predetermined position.

8. The cylindrical battery cell tab shaping mechanism according to claim 7, characterized in that: The fixed roller group comprises a left fixed rubber roller (32), a right fixed rubber roller (33) and an upper fixed rubber roller (34) which are respectively arranged on the left side, the right side and the top of the battery cell (2) by a mechanical arm, the left fixed rubber roller (32), the right fixed rubber roller (33) and the upper fixed rubber roller (34) are arranged along the length direction of the battery cell (2), and the mechanical arm is arranged to control the left fixed rubber roller (32), the right fixed rubber roller (33) and the upper fixed rubber roller (34) to rotate according to the arrival signal of the positive electrode lug (21) detected by the lug positioning sensor (31), and to move closer to or farther away from the battery cell (2).

9. A tab shaping production line, characterized in that: The tab shaping assembly line has a cylindrical battery cell tab shaping mechanism as described in any one of claims 1 to 8; The tab shaping assembly line further comprises a conveyor belt (1), on which a plurality of bases (12) are arranged at intervals for carrying the battery cells (2); The conveyor belt (1) is used to convey the base (12) carrying the battery cell (2) to the cylindrical battery cell tab shaping mechanism to perform tab shaping on the battery cell (2).

10. The tab shaping production line according to claim 9, characterized in that: The base (12) is configured as a thick U-shaped plate with an opening facing upwards, and two vertical plates of the U-shaped plate are provided with V-shaped notches with an opening facing upwards, for supporting the battery core (2).

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