Soft package battery cell pretreatment device

Abstract

The invention provides a soft package battery cell pretreatment device which comprises at least one group of cutting feeding lines, each cutting feeding line comprises a stepping conveying section, a detection station, a shaping station and a cutting station are arranged in the conveying direction of each stepping conveying section, each cutting station comprises a movably-arranged base and a soft package positioning mechanism, and each soft package positioning mechanism is arranged on the base. The base is provided with at least one group of punching platform deck and a pressing module positioned on the punching platform deck, the lower part of the pressing module is connected with a punching tool bit, and the punching tool bit is used for punching a tab of a soft package battery cell; according to the device, the two groups of cutting feeding lines are arranged to synchronously and sequentially carry out electrical property detection, shaping and tab cutting on the soft package battery cells, detection and cutting work of 1800 soft package battery cells can be completed in one hour, the efficiency is extremely high, the same assembly line can adapt to cutting of multiple groups of soft package battery cells, positioning of the soft package battery cells is accurate, the cutting accuracy is improved, and the production efficiency is improved. And an anti-short-circuit design is specially arranged, so that the short circuit of the battery cell during cutting is effectively prevented.

Description

Technical Field

[0001] The present invention relates to the field of battery assembly automation equipment, and in particular to a soft-pack battery cell pretreatment device. Background Art

[0002] Before assembling soft-pack batteries, they need to be preprocessed, including electrode detection, electrode shaping and cutting, etc. There are also some structures for electrode cutting in the prior art, but most of them are cut by a single battery pack, which is inefficient. When encountering soft-pack batteries of different sizes, the position of the battery cell needs to be adjusted and then cut, which will cause problems such as uneven cutting of the tabs, which does not meet the cutting requirements. In addition, the existing equipment is inefficient and cannot quickly complete the detection, shaping and cutting processes. In addition, during the cutting process, there will be misoperation causing the soft-pack batteries to short-circuit and damage the batteries. Summary of the invention

[0003] In order to solve the above technical problems, the present invention proposes a soft-pack battery cell preprocessing device, comprising at least one group of cutting and loading lines, the cutting and loading line comprising a stepping conveying section, a detection station, a shaping station and a cutting station are arranged in the conveying direction of the stepping conveying section, the cutting station comprises a movably arranged base and a soft-pack positioning mechanism, the base is provided with at least one group of punching platforms and a lower pressing die group located on the punching platform, the lower part of the lower pressing die group is connected with a punching head, and the punching head punches the pole ear of the soft-pack battery cell; the soft-pack positioning mechanism comprises a support plate, at least one group of double-headed cylinders and a soft-pack placement plate are arranged on the support plate, the output end of the double-headed cylinder is connected with a grid-shaped positioning block, the soft-pack placement plate is located between two grid-shaped positioning blocks, a plurality of square openings are arranged on both sides of the soft-pack placement plate, the soft-pack battery cell is placed on the soft-pack placement plate, and a pushing cylinder is arranged at the end of the support plate, and the grid-shaped positioning blocks are close to each other and extend into the square opening to adjust the position of the soft-pack placement plate.

[0004] Preferably, the end of the step conveying section also includes a conveying belt, and the end of the conveying belt is provided with an NG piece sorting device.

[0005] Preferably, one end of the soft package placement plate is fixed to the support plate, and the other end is pressed onto the punching carrier.

[0006] Preferably, the punching platform includes mutually insulated bottom plates, two groups of support blocks are arranged on the insulating bottom plates, separation grooves are arranged between the support blocks, a baffle is arranged on one side of the support block, a through hole is arranged on the insulating bottom plates, and a material guide groove is connected to the lower part of the through hole.

[0007] Preferably, the punching cutter head includes an insulating fixed block, two groups of cutter heads are provided on one side of the insulating fixed block, the outside of the cutter heads are wrapped with an insulating layer, the top of the cutter head is connected to one side of the insulating fixed block through an elastic column, and a guide column and a spring are provided between the insulating fixed block and the insulating base.

[0008] Preferably, the pressing die set comprises a pressing cylinder, an output end of the pressing cylinder is connected to a pressing plate, and a lower part of the pressing plate is connected to the punching tool head.

[0009] Preferably, the stepping conveying section comprises a conveying module, a connecting plate is provided on a slider of the conveying module, an adjusting cylinder is provided on the connecting plate, an output end of the adjusting cylinder is connected to a profile, and vacuum adsorption devices are equidistantly provided on the profile.

[0010] Preferably, the inspection station and the shaping station both include a positioning seat, the positioning seat includes a positioning plate body, the positioning plate body is provided with an elongated hole, and at least two groups of suction cups pass through the elongated hole.

[0011] Preferably, the detection station further comprises a carrier block, a first pressing cylinder is provided on the carrier block, two groups of detection probes are connected to the output end of the first pressing cylinder, and the detection probes are pressed down on the two groups of pole ears respectively.

[0012] Preferably, the shaping station further comprises two groups of shaping blocks and a second pressing cylinder, the shaping blocks are made of insulating material, and the output end of the second pressing cylinder is connected to two groups of pressing blocks, which are pressed on the shaping blocks.

[0013] The soft-pack battery cell pretreatment device proposed in the present invention has the following beneficial effects: the device is equipped with two groups of cutting and feeding lines to synchronously and sequentially perform electrical inspection, shaping, and tab cutting on the soft-pack battery cells, and can complete the inspection and cutting of 1,800 soft-pack battery cells in one hour, with extremely high efficiency. The same assembly line can adapt to the cutting of multiple groups of soft-pack battery cells, and the soft-pack battery cells are accurately positioned to improve the cutting accuracy. In addition, a special anti-short circuit design is provided to effectively prevent short circuits in the battery cells during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 is a schematic diagram of a step-by-step conveying section of the present invention;

[0017] Figure 3 It is a schematic diagram of the detection station of the present invention;

[0018] Figure 4 It is a schematic diagram of a shaping station of the present invention;

[0019] Figure 5 is a schematic diagram of a positioning seat of the present invention;

[0020] Figure 6 is a schematic diagram of a cutting station of the present invention;

[0021] Figure 7 is a schematic diagram of a soft bag positioning mechanism of the present invention;

[0022] Figure 8 is a schematic diagram of a punching platform of the present invention;

[0023] Fig. 9 It is a schematic diagram of the installation of the punching platform and the pressing die assembly of the present invention;

[0024] Fig.10 It is a schematic diagram of the NG piece sorting device of the present invention;

[0025] Among them, 1. Cutting and feeding line; 2. Inspection station; 3. Shaping station; 4. Cutting station; 5. NG parts sorting device; 6. Base; 7. Screw module; 8. Soft bag positioning mechanism; 9. Punching platform; 10. Pressing module; 11. Punching head; 12. Support plate; 13. Double-head cylinder; 14. Soft bag placement plate; 15. Grid-shaped positioning block; 16. Square mouth; 17. Push cylinder; 18. Conveyor belt; 19. Insulation bottom plate; 20. Support block; 21. Dividing groove; 22. Block; 23. Insulation fixing block; 24. Cutter body; 25. Elastic column; 26. Guide column; 27. Spring; 28. Pressing cylinder; 29. ​​Conveying module; 30. Connecting plate; 31. Adjusting cylinder; 32. Profile; 33. Vacuum adsorption device; 34. Positioning seat; 35. Positioning plate; 36. Suction cup; 37. Carrying block; 38. First pressing cylinder; 39. Detection probe; 40. Second pressing cylinder; 41. Shaping block; 42. Pressing block; 43. Moving module; 44. Pressing grabbing cylinder; 45. Rotating cylinder; 46. NG piece conveyor belt; 47. Soft-pack battery cell; 48. Tab. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] like Figure 1 As shown, the present invention proposes a soft-pack battery cell pretreatment device, including at least one group of cutting and feeding lines 1. In this embodiment, in order to improve work efficiency, two groups of cutting and feeding lines 1 are specially set.

[0028] like Figure 1 , Figure 2As shown, the cutting and loading line 1 includes a step-by-step conveying section, and an inspection station 2, a shaping station 3 and a cutting station 4 are arranged in the conveying direction of the step-by-step conveying section. The step-by-step conveying section includes a conveying module 29, and the conveying module 29 is a purchased part. A connecting plate 30 is arranged on the slider of the conveying module 29, and an adjusting cylinder 31 is arranged on the connecting plate 30. The output end of the adjusting cylinder 31 is connected to a profile 32, and vacuum adsorption devices 33 are equidistantly arranged on the profile 32. The adjusting cylinder 31 can adjust the profile 32 to move up and down, and cooperate with the conveying module 29 to move horizontally, and four groups of vacuum adsorption devices 33 are arranged on the profile 32, each group has two vacuum adsorption heads, which are used to adsorb soft-pack batteries 47 respectively, and the four groups of vacuum adsorption devices 33 correspond to the inspection station 2, the shaping station 3, the cutting station 4 and the conveying belt 18 and the NG parts sorting device 5 at the end respectively.

[0029] The conveying module 29 of the stepping conveying section drives the vacuum adsorption head at the head to grab the soft-pack battery cells 47 on the conveyor belt (not shown) in front of the detection station 2 and move it horizontally to the shaping station 3, and the vacuum adsorption head at the rear continues to grab the next group of soft-pack battery cells 47. After the battery cells on the detection station 2 are inspected, they are lifted and moved to the shaping station 3 by the conveying module 29. The soft-pack battery cells 47 adsorbed subsequently are placed on the detection station 2. Similarly, after the shaping station 3 is completed, they are grabbed to the cutting station 4 until the last conveyor belt 18, and the handling efficiency is improved by the stepping conveying section.

[0030] The following is a further description of each station:

[0031] First, if Figure 3 , Figure 5 As shown, the inspection station 2 has a similar structure to the shaping station 3, and both include a positioning seat 34. The positioning seat 34 includes a positioning plate 35, and the positioning plate 35 is provided with an elongated hole, and at least two groups of suction cups 36 pass through the elongated hole. There is a limit block on the positioning plate 35, and a circular hole is set on the limit block for the suction cup 36 to pass through. The circular hole corresponds to the position of the suction cup 36. There is a card slot on the limit block for the placement of the soft-pack battery 47. Multiple groups of suction cups 36 are set in the elongated hole at the bottom of the positioning plate 35 to be suitable for soft-pack batteries 47 of different sizes. When the battery cell is small, it may cover one, and the soft-pack battery 47 is adsorbed and positioned by the suction cup 36. The inspection station 2 also includes a carrier block 37, and a first downward pressure cylinder 38 is provided on the carrier block 37. The output end of the first downward pressure cylinder 38 is connected to two groups of detection probes 39. The detection probes 39 are pressed down on the two groups of pole ears 48 respectively to perform electrical detection.

[0032] like Figure 4As shown, the shaping station 3 also includes two groups of shaping blocks 41 and a second pressing cylinder 40. The shaping blocks 41 are made of insulating material. The output end of the second pressing cylinder 40 is connected to two groups of pressing blocks 42. The pressing blocks 42 are connected to the output end of the second pressing cylinder 40 through a plate. Two groups of pressing blocks 42 and shaping blocks 41 are respectively corresponding to two pole ears 48. The pressing blocks 42 are pressed on the shaping blocks 41. The pole ears 48 of the soft package are located between the two groups of pressing blocks 42. The pole ears 48 are flattened by pressing down by the second pressing rod on the upper part to facilitate subsequent cutting.

[0033] like Figure 6 , Figure 8 , Fig. 9 As shown, the cutting station 4 includes a movably arranged base 6 and a soft pack positioning mechanism 8. The movement of the base 6 is through a screw module 7 arranged at the bottom, which drives the base 6 to approach or move away from one side of the stepping conveying section. The base 6 is provided with at least one set of punching platforms 9 and a pressing module 10 located on the punching platform 9. The pressing module 10 includes a pressing cylinder 28. The output end of the pressing cylinder 28 is connected to a pressing plate. The lower part of the pressing plate is connected to the punching head 11. The punching head 11 presses the soft pack battery core. The pole ear 48 of 47 is punched out; the soft-pack positioning mechanism 8 includes a support plate 12, on which at least one group of double-headed cylinders 13 and a soft-pack placement plate 14 are provided, the output end of the double-headed cylinder 13 is connected to a grid-shaped positioning block 15, and the soft-pack placement plate 14 is located between two grid-shaped positioning blocks 15, one end of the soft-pack placement plate 14 is fixed on the support plate 12, and the other end is pressed on the punching platform 9, to ensure that one end of the soft-pack battery cell 47 in the length direction can be aligned with the punching platform 9 after being pushed.

[0034] like Figure 7As shown, a plurality of square openings 16 are provided on both sides of the soft-pack placement plate 14, and the soft-pack battery cell 47 is placed on the soft-pack placement plate 14. A pushing cylinder 17 is provided at the end of the support plate 12. The grid-shaped positioning blocks 15 are close to each other and extend into the square opening 16 to adjust the position of the soft-pack placement plate 14. During positioning, the double-headed cylinder 13 is contracted to bring the grid positioning blocks close to each other and pass through the square opening 16 to be pressed on the soft pack. At the same time, a pushing cylinder 17 is provided at the end of the soft-pack battery cell 47, which can push the end of the soft-pack battery cell 47 and push the pole ear 48 to the position of the punching platform 9. The above structure can be applied to soft-pack battery cells 47 of various sizes and can be accurately aligned. After alignment, the two groups of pole ears 48 are located on the punching platform 9. The punching platform 9 includes an insulating bottom plate. Two groups of support blocks 20 are provided on the insulating bottom plate 19. A separation groove 21 is provided between the support blocks 20, and a baffle 2 is provided on one side of the support block 20. 2. It is used to press on the end of the pole ear 48 to limit the protruding length of the pole ear 48 to ensure the accuracy of the cutting position. A through hole is provided on the insulating bottom plate 19, and a material guide groove is connected to the lower part of the through hole. The pole ear 48 is placed on the support block 20. A separation groove 21 is set between the support blocks 20 to ensure that the two groups of support blocks 20 are non-conductive. Similarly, the punching head above includes an insulating fixing block 23, and two groups of knife bodies 24 are provided on one side of the insulating fixing block 23. The outside of the knife body 24 is wrapped with an insulating layer to leave a blade position. Since the soft-pack battery cell 47 is already a finished product, if a traditional cutting device is used for direct punching, the pole ear 48 will be turned on, causing a short circuit in the battery cell. Therefore, the punching heads are set separately, and the material connecting the knife body 24 is an insulating material, which can be a rubber block. In this way, when the punching knife punches two pole ears 48 at the same time, conduction will not be achieved. The insulating material wrapped on the outside of the knife head can be a silicone material. The cut electrode adheres between the two knife heads to cause a short circuit.

[0035] In addition, in order to ensure the stability of punching, the top of the blade is connected to one side of the insulating fixed block 23 through an elastic column 25, and a guide column 26 and a spring 27 are provided between the insulating fixed block 23 and the insulating base 6. When pressed down, the spring 27 and the guide column 26 increase the stability of cutting.

[0036] like Figure 1 , Fig.10As shown, through the above steps, after detection, shaping and cutting, the soft-pack battery cell 47 has basically completed pre-processing and needs to be sent to the next process. By setting a conveyor belt 18 at the end of the stepping conveying section, a CCD camera can be set on one side of the conveyor belt 18, and the camera is used to detect whether the tab 48 is cut intact. An NG piece sorting device 5 is provided at the end of the conveyor belt 18, and the NG sorting device includes a moving module 43. The slider of the moving module 43 is connected to a downward pressing grabbing cylinder 44 and a rotating cylinder 45 located at the lower part of the downward pressing grabbing cylinder 44. The output end of the rotating cylinder 45 is connected to a suction cup 36. An NG piece conveyor belt 46 is set in the vertical direction of the conveyor belt 18. The NG piece is grabbed by the moving module 43 and the direction is adjusted and placed on the NG piece conveyor belt 46, while the normal piece is transported to the next process position through the conveying module 29.

Claims

1. A soft-pack battery pretreatment device, characterized in that: The invention relates to a method for preparing a soft-pack battery according to the present invention, wherein the plurality of movable parts are provided with a plurality of movable parts, and the movable parts are provided with a plurality of movable parts. The movable parts are provided with a plurality of movable parts, and the movable parts are provided with a plurality of movable parts.

2. The soft-pack battery pretreatment device according to claim 1, characterized in that: The end of the step conveying section also includes a conveying belt, and the end of the conveying belt is provided with an NG piece sorting device.

3. The soft-pack battery pretreatment device according to claim 1, characterized in that: One end of the soft package placement plate is fixed on the support plate, and the other end is pressed on the punching carrier.

4. The soft-pack battery cell pretreatment device according to claim 1, characterized in that: The punching platform comprises an insulating bottom plate, two groups of support blocks are arranged on the insulating bottom plate, a separation groove is arranged between the support blocks, a baffle is arranged on one side of the support block, a through hole is arranged on the insulating bottom plate, and a material guide groove is connected to the lower part of the through hole.

5. The soft-pack battery cell pretreatment device according to claim 4, characterized in that: The punching cutter head includes an insulating fixed block, one side of which is provided with two sets of cutter bodies, the outside of which is wrapped with an insulating layer, the top of the cutter body is connected to one side of the insulating fixed block through an elastic column, and a guide column and a spring are provided between the insulating fixed block and the insulating base.

6. The soft-pack battery cell pretreatment device according to claim 1, characterized in that: The pressing die set comprises a pressing cylinder, an output end of the pressing cylinder is connected to a pressing plate, and the lower part of the pressing plate is connected to the punching tool head.

7. The soft-pack battery cell pretreatment device according to claim 1, characterized in that: The step-by-step conveying section comprises a conveying module, a connecting plate is arranged on a slider of the conveying module, an adjusting cylinder is arranged on the connecting plate, a profile is connected to an output end of the adjusting cylinder, and vacuum adsorption devices are equidistantly arranged on the profile.

8. The soft-pack battery cell pretreatment device according to claim 1, characterized in that: The detection station and the shaping station both include a positioning seat, and the positioning seat includes a positioning plate body. The positioning plate body is provided with an elongated hole, and at least two groups of suction cups pass through the elongated hole.

9. The soft-pack battery cell pretreatment device according to claim 8, characterized in that: The detection station also includes a carrier block, on which a first pressing cylinder is disposed, and an output end of the first pressing cylinder is connected to two groups of detection probes, which are pressed downwardly on the two groups of pole ears respectively.

10. The soft-pack battery cell pretreatment device according to claim 1, characterized in that: The shaping station also includes two groups of shaping blocks and a second pressing cylinder. The shaping blocks are made of insulating material. The output end of the second pressing cylinder is connected to two groups of pressing blocks, which are pressed on the shaping blocks.

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