Detection mechanism for battery cell disassembling device and battery cell disassembling device

Abstract

The utility model relates to battery manufacturing technical field especially is used for detection mechanism and electric core disassembly device of electric core disassembly device, and electric core disassembly device includes the unwinding mechanism for unwinding the disassembled electric core and is used for the winding mechanism of winding the disassembled electric core, unwinding mechanism includes unwinding roller, and the disassembled electric core includes at least one diaphragm, and winding mechanism includes at least one first winding roller for winding diaphragm, and detection mechanism includes at least one first roller group, and first roller group includes first tensioning roller and second tensioning roller, diaphragm is transported in turn around unwinding roller, first tensioning roller, second tensioning roller and first winding roller, and the part between first tensioning roller and second tensioning roller forms first detection part and presents horizontal setting, still include the strong light flashlight for providing illumination, and the strong light flashlight is opposite first detection part setting, and its illumination area covers first detection part, the utility model can detect whether diaphragm exists the light transmission uneven, to determine the bad point leading to the short circuit of winding core.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a testing mechanism and a battery cell dismantling device for use in battery cell dismantling. Background Technology

[0002] Lithium batteries produce various defective products during production. Since the positive electrode sheet is valuable, directly scrapping it would result in significant waste. When defective cells are obtained during production, they need to be disassembled to recycle materials.

[0003] Utility model patent with authorization announcement number CN219892236U discloses a testing mechanism for a battery cell disassembly device, comprising: an unwinding mechanism, a separation mechanism, and a dustproof mechanism, wherein the unwinding mechanism is used to unwind the wound battery cell; the separation mechanism is used to separate the positive electrode layer and the negative electrode layer of the wound battery cell; and the dustproof mechanism is used to isolate and protect the separated positive electrode layer or the negative electrode layer to prevent the positive and negative electrode powders from mixing.

[0004] However, such devices still have their limitations. The aforementioned devices can be used to quickly disassemble the core for material recycling; however, there are generally two situations where core disassembly is required: one is that the core is too thick or too thin, and the other is that the core is short-circuited. For the case of a core short circuit, it is necessary to locate the short circuit point, and the aforementioned devices lack the relevant detection settings. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a detection mechanism and a battery cell dismantling device for a battery cell dismantling apparatus. The detection mechanism can detect whether there is uneven light transmission in the separator, so as to identify the defective point that causes the core to short circuit.

[0006] The technical solution to the problem of this utility model is as follows: Firstly, a detection mechanism for a battery cell dismantling device is provided. The battery cell dismantling device includes an unwinding mechanism for unwinding a battery cell to be dismantled and a winding mechanism for winding the battery cell to be dismantled. The unwinding mechanism includes an unwinding roller, and the battery cell to be dismantled includes at least one diaphragm. The winding mechanism includes at least one first winding roller for winding the diaphragm. The detection mechanism for the battery cell dismantling device includes at least one first roller group, which includes a first tension roller and a second tension roller. The diaphragm is conveyed sequentially around the unwinding roller, the first tension roller, the second tension roller, and the first winding roller. The portion of the diaphragm located between the first tension roller and the second tension roller forms a first detection section and is horizontally arranged. The device also includes a high-intensity flashlight for providing illumination. The high-intensity flashlight is arranged opposite to the first detection section, and its illumination area covers the first detection section.

[0007] Furthermore, the detection mechanism for the battery cell dismantling device provided by this utility model may also have the following features: the battery cell to be dismantled includes at least one electrode sheet, and the winding mechanism further includes at least one second winding roller for winding the electrode sheet; the detection mechanism for the battery cell dismantling device further includes at least one second roller group, the second roller group including a third tension roller and a fourth tension roller; the electrode sheet is conveyed sequentially around the unwinding roller, the third tension roller, the fourth tension roller and the second winding roller, and the portion located between the third tension roller and the fourth tension roller forms a second detection section and is horizontally arranged; it also includes a thickness measuring component, the thickness measuring component including a first laser sensor disposed above the second detection section and a second laser sensor disposed below the second detection section, the first laser sensor and the second laser sensor being disposed opposite to each other.

[0008] Furthermore, the detection mechanism for the battery cell disassembly device provided by this utility model may also have the following features: it further includes a mounting plate for mounting the first roller group, the second roller group, the high-intensity flashlight and the thickness measuring component.

[0009] Furthermore, the detection mechanism for the battery cell disassembly device provided by this utility model may also have the following feature: the positions of the first tensioning roller, the second tensioning roller, the third tensioning roller and / or the fourth tensioning roller along the length direction of the first detection section are adjustable.

[0010] Furthermore, the detection mechanism for the battery cell disassembly device provided by this utility model may also have the following features: the first tension roller, the second tension roller, the third tension roller and / or the fourth tension roller are all mounted on the mounting plate through a first adjustment assembly. The first adjustment assembly includes a mounting member with an adjustment groove and a moving member disposed in the adjustment groove. The mounting member is connected to the mounting plate, and the moving member is connected to the first tension roller, the second tension roller, the third tension roller or the fourth tension roller.

[0011] Furthermore, the detection mechanism for the battery cell disassembly device provided by this utility model may also have the following feature: the position of the high-intensity flashlight along the length direction of the first detection part is adjustable.

[0012] Furthermore, the detection mechanism for the battery cell disassembly device provided by this utility model may also have the following features: the detection mechanism further includes a second adjustment component for adjusting the position of the high-intensity flashlight, the second adjustment component includes an adjustment rod fixedly disposed on the mounting plate and a moving block sleeved on the adjustment rod, the length direction of the adjustment rod extends along the length direction of the first detection part, and the moving block is connected to the high-intensity flashlight.

[0013] Furthermore, the detection mechanism for the battery cell disassembly device provided by this utility model may also have the following features: the high-intensity flashlight is detachably connected to the moving block through a connecting assembly, the connecting assembly includes two L-shaped plates respectively disposed on both sides of the high-intensity flashlight, the L-shaped plates include a first plate and a second plate that are perpendicular to each other, the first plate is detachably connected to the high-intensity flashlight through a first bolt, and the second plate is detachably connected to the moving block through a second bolt.

[0014] Furthermore, the detection mechanism for the battery cell disassembly device provided by this utility model may also have the following features: the first plate is provided with an arc-shaped groove, the body of the high-intensity flashlight is provided with a threaded hole, and the first plate and the high-intensity flashlight are detachably connected by a first bolt that passes through the arc-shaped groove and the threaded hole in sequence.

[0015] Secondly, this utility model also provides a battery cell disassembly device, including the detection mechanism for the battery cell disassembly device as described above.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. Since cracks or damage to the diaphragm are often the direct cause of short circuits in the core, this application designs the first tensioning roller and the second tensioning roller to work together to ensure that the first detection section is tensioned and has a flat setting that is easy to observe. A strong flashlight is set to detect whether there is uneven light transmission on the first detection section, so as to identify the defective point that causes the core to short circuit. As the diaphragm is gradually wound up, the strong flashlight can gradually detect the defective points on the entire diaphragm.

[0018] 2. Another situation where the core needs to be disassembled is when the core is too thick or too thin. In this case, a detection module for detecting the thickness of the electrode sheet needs to be further set up. This application can measure the thickness of the electrode sheet by setting up a first laser sensor and a second laser sensor. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the thickness measuring component of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the first adjustment component of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the second adjustment component of this utility model.

[0024] In the picture:

[0025] 11. Detection mechanism; 12. Unwinding roller; 131. First winding roller; 132. Second winding roller; 21. Diaphragm; 211. First detection unit; 22. Electrode; 221. Second detection unit; 31. First tension roller; 32. Second tension roller; 33. Third tension roller; 34. Fourth tension roller; 4. High-intensity flashlight; 5. Thickness measuring assembly; 51. First laser sensor; 52. Second laser sensor; 6. Mounting plate; 71. Mounting component; 72. Adjusting groove; 73. Moving component; 74. Pressure roller; 81. Adjusting rod; 82. Moving block; 91. First plate; 92. Second plate; 93. First bolt; 94. Arc groove. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] This utility model provides a detection mechanism 11 for a battery cell disassembly device, the specific structure of which is as follows:

[0028] like Figure 1As shown, the battery cell dismantling device includes an unwinding mechanism for unwinding the battery cell to be dismantled and a winding mechanism for winding the battery cell to be dismantled. The unwinding mechanism includes an unwinding roller 12, and the battery cell to be dismantled includes at least one diaphragm 21. The winding mechanism includes at least one first winding roller 131 for winding the diaphragm 21. The detection mechanism 11 for the battery cell dismantling device includes at least one first roller group, which includes a first tension roller 31 and a second tension roller 32. The diaphragm 21 is conveyed sequentially around the unwinding roller 12, the first tension roller 31, the second tension roller 32, and the first winding roller 131. The portion of the diaphragm 21 located between the first tension roller 31 and the second tension roller 32 forms a first detection section 211 and is horizontally arranged. In this embodiment, the disassembled battery cell includes two separators 21, which are an outer separator and an inner separator, respectively. Correspondingly, there are two first winding rollers 131, which are used to wind up the outer separator and the inner separator, respectively. There are also two first roller groups, which are used to transport the outer separator and the inner separator, respectively. The detection mechanism 11 also includes a high-intensity flashlight 4 for providing illumination. The high-intensity flashlight 4 is disposed opposite to the first detection unit 211, and its illumination area covers the first detection unit 211. Since cracks or damage to the diaphragm 21 are often the direct cause of short circuits in the core, during use, the first tension roller 31 and the second tension roller 32 work together to ensure that the first detection section 211 is taut and in a straight position that is easy to observe. The emitted light from the high-intensity flashlight 4 forms an illumination area that covers the first detection section 211, which can detect whether there is uneven light transmission on the first detection section 211, so as to identify the defective point that causes the core to short circuit. As the diaphragm 21 is gradually wound up, the high-intensity flashlight 4 can gradually detect the defective points on the entire diaphragm 21.

[0029] In some embodiments, to ensure that the first detection unit 211 is horizontally arranged, the highest point of the first tensioning roller 31 and the lowest point of the second tensioning roller 32 are on the same horizontal plane, and the lowest point of the first tensioning roller 31 and the highest point of the second tensioning roller 32 are on the same horizontal plane.

[0030] Another situation requiring core disassembly is when the core is too thick or too thin. Since the thickness of the diaphragm 21 is not primarily due to process fluctuations, excessive core thickness or thinness is often caused by deviations in the thickness of the electrode 22. Therefore, the inspection mechanism 11 should also inspect the thickness of the electrode 22. In some embodiments, such as... Figure 1 and Figure 2As shown, the disassembled battery cell also includes at least one electrode 22, and the winding mechanism includes at least one second winding roller 132 for winding the electrode 22; the detection mechanism 11 also includes at least one second roller group, which includes a third tension roller 33 and a fourth tension roller 34; the electrode 22 is conveyed sequentially around the unwinding roller 12, the third tension roller 33, the fourth tension roller 34, and the second winding roller 132, and the portion of the electrode 22 located between the third tension roller 33 and the fourth tension roller 34 forms a second detection section 221 and is horizontally arranged. In this embodiment, the disassembled battery cell also includes two electrode 22s, namely a positive electrode and a negative electrode; correspondingly, the winding mechanism includes two second winding rollers 132, respectively used for winding the positive electrode and the negative electrode; the number of second roller groups is two, respectively used for conveying the positive electrode and the negative electrode. The detection mechanism 11 also includes a thickness measuring component 5, which includes a first laser sensor 51 disposed above the second detection section 221 and a second laser sensor 52 disposed below the second detection section 221. The first laser sensor 51 and the second laser sensor 52 are arranged opposite to each other. In use, the distance D1 between the first laser sensor 51 and the second laser sensor 52 is first determined, and then the distance D2 between the first laser sensor 51 and the electrode 22 and the distance D3 between the second laser sensor 52 and the electrode 22 are measured respectively. Finally, the thickness of the electrode 22 can be obtained by subtracting D2 and D3 from D1 respectively.

[0031] In some embodiments, to ensure that the second detection unit 221 is horizontally positioned, thereby ensuring the accuracy of thickness measurement, the highest point of the third tension roller 33 and the lowest point of the fourth tension roller 34 are located on the same horizontal plane, and the lowest point of the third tension roller 33 and the highest point of the fourth tension roller 34 are located on the same horizontal plane.

[0032] In some embodiments, the detection mechanism 11 further includes a mounting plate 6 for mounting the first roller group, the second roller group, the high-intensity flashlight 4, and the thickness measuring component 5.

[0033] In some embodiments, the positions of the first tensioning roller 31, the second tensioning roller 32, the third tensioning roller 33, and / or the fourth tensioning roller 34 along the length direction of the first detection section 211 are adjustable. In a specific embodiment, such as Figure 1 He Ru Figure 3As shown, the first tension roller 31, the second tension roller 32, the third tension roller 33, and / or the fourth tension roller 34 are all mounted on the mounting plate 6 via a first adjustment assembly. The first adjustment assembly includes a mounting member 71 with an adjustment groove 72 and a moving member 73 disposed within the adjustment groove 72. The guiding direction of the adjustment groove 72 extends along the length direction of the first detection part 211. A gap is provided between the mounting member 71 and the mounting plate 6 for accommodating the first tension roller 31, the second tension roller 32, the third tension roller 33, or the fourth tension roller 34, and both ends of the moving member 73 are connected to the mounting plate 6. The moving member 73 is a threaded rod, which is threaded through the adjustment groove 72 and has both ends located on both sides of the adjustment groove 72. One end is connected to the first tension roller 31, the second tension roller 32, the third tension roller 33, or the fourth tension roller 34, and the other end is threadedly connected to the pressure roller 74 with a threaded through hole. The pressure roller 74 abuts against the mounting member 71.

[0034] In some embodiments, the position of the high-intensity flashlight 4 along the length of the first detection unit 211 is adjustable. In a specific embodiment, such as Figure 1 and Figure 4 As shown, the detection mechanism 11 also includes a second adjustment component for adjusting the position of the high-intensity flashlight 4. The second adjustment component includes an adjustment rod 81 fixedly mounted on the mounting plate 6 and a moving block 82 sleeved on the adjustment rod 81. The length direction of the adjustment rod 81 extends along the length direction of the first detection part 211, and the moving block 82 is connected to the high-intensity flashlight 4. The adjustment rod 81 is a lead screw, and the moving block 82 is provided with a threaded hole for threaded connection with the adjustment rod 81.

[0035] In some embodiments, the high-powered flashlight 4 is detachably connected to the movable block 82 via a connecting assembly. The connecting assembly includes two L-shaped plates respectively disposed on both sides of the high-powered flashlight 4. The L-shaped plates include a first plate 91 and a second plate 92 that are perpendicular to each other. The first plate 91 is detachably connected to the high-powered flashlight 4 via a first bolt 93, and the second plate 92 is detachably connected to the movable block 82 via a second bolt.

[0036] In some embodiments, to facilitate the adjustment of the beam angle emitted by the high-powered flashlight 4, the first plate 91 is provided with an arc-shaped groove 94, and the flashlight 4 has a threaded hole on its body. The first plate 91 and the high-powered flashlight 4 are detachably connected by a first bolt 93 passing through the arc-shaped groove 94 and the threaded hole in sequence. In use, the beam angle emitted by the high-powered flashlight 4 can be adjusted by adjusting the position of the first bolt 93 within the arc-shaped groove 94.

[0037] This utility model also provides a battery cell disassembly device, including the detection mechanism 11 for battery cell disassembly devices as described above. Figure 1As shown, in this embodiment, the order of cell disassembly is outer separator, positive electrode sheet, negative electrode sheet and inner separator. Therefore, the arrangement order of the two first winding rollers 131 and the two second winding rollers 132 from top to bottom is as follows: first winding roller 131 for winding the outer separator, second winding roller 132 for winding the positive electrode sheet, second winding roller 132 for winding the negative electrode sheet, and first winding roller 131 for winding the inner separator, so as to avoid cross arrangement and facilitate multiple windings to be performed simultaneously.

[0038] The above-described contents can be implemented individually or in combination in various ways, and all such variations are within the protection scope of this utility model.

[0039] In the description of this invention, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0040] In the description of this invention, it should also be noted that the terms "center," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In the description of this invention, unless otherwise stated, "a number" means two or more.

[0041] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A detection mechanism (11) for a battery cell dismantling device, the battery cell dismantling device comprising an unwinding mechanism for unwinding a battery cell to be dismantled and a winding mechanism for winding the battery cell to be dismantled, the unwinding mechanism comprising an unwinding roller (12), the battery cell to be dismantled comprising at least one diaphragm (21), and the winding mechanism comprising at least one first winding roller (131) for winding the diaphragm (21), characterized in that, The detection mechanism (11) for the battery cell disassembly device includes at least one first roller group, which includes a first tension roller (31) and a second tension roller (32); the diaphragm (21) is conveyed sequentially around the unwinding roller (12), the first tension roller (31), the second tension roller (32) and the first winding roller (131), and the portion of the diaphragm (21) located between the first tension roller (31) and the second tension roller (32) forms a first detection section (211) and is arranged horizontally; it also includes a high-intensity flashlight (4) for providing illumination, which is arranged opposite to the first detection section (211) and its illumination area covers the first detection section (211).

2. The detection mechanism (11) for the cell dismantling device according to claim 1, characterized in that, The disassembled battery cell includes at least one electrode (22), and the winding mechanism includes at least one second winding roller (132) for winding the electrode (22); the detection mechanism (11) for the battery cell disassembly device includes at least one second roller group, the second roller group including a third tension roller (33) and a fourth tension roller (34); the electrode (22) is conveyed sequentially around the unwinding roller (12), the third tension roller (33), the fourth tension roller (34) and the second winding roller (132), and the portion located between the third tension roller (33) and the fourth tension roller (34) forms a second detection section (221) and is horizontally arranged; it also includes a thickness measuring component (5), the thickness measuring component (5) including a first laser sensor (51) disposed above the second detection section (221) and a second laser sensor (52) disposed below the second detection section (221), the first laser sensor (51) and the second laser sensor (52) being arranged opposite to each other.

3. The detection mechanism (11) for the battery cell disassembly device according to claim 2, characterized in that, It also includes a mounting plate (6) for mounting the first roller group, the second roller group, the high-intensity flashlight (4) and the thickness measuring component (5).

4. The detection mechanism (11) for the cell disassembly device according to claim 3, characterized in that, The positions of the first tension roller (31), the second tension roller (32), the third tension roller (33) and / or the fourth tension roller (34) along the length direction of the first detection section (211) are adjustable.

5. The detection mechanism (11) for the cell disassembly device according to claim 4, characterized in that, The first tension roller (31), the second tension roller (32), the third tension roller (33) and / or the fourth tension roller (34) are all mounted on the mounting plate (6) via a first adjustment assembly. The first adjustment assembly includes a mounting member (71) with an adjustment groove (72) and a moving member (73) disposed in the adjustment groove (72). The mounting member (71) is connected to the mounting plate (6), and the moving member (73) is connected to the first tension roller (31), the second tension roller (32), the third tension roller (33) or the fourth tension roller (34).

6. The detection mechanism (11) for the cell disassembly device according to claim 3, characterized in that, The position of the high-intensity flashlight (4) along the length of the first detection unit (211) is adjustable.

7. The detection mechanism (11) for the cell disassembly device according to claim 6, characterized in that, The detection mechanism (11) further includes a second adjustment component for adjusting the position of the high-intensity flashlight (4). The second adjustment component includes an adjustment rod (81) fixedly mounted on the mounting plate (6) and a moving block (82) sleeved on the adjustment rod (81). The length direction of the adjustment rod (81) extends along the length direction of the first detection part (211), and the moving block (82) is connected to the high-intensity flashlight (4).

8. The detection mechanism (11) for the cell disassembly device according to claim 7, characterized in that, The high-powered flashlight (4) is detachably connected to the movable block (82) via a connecting assembly. The connecting assembly includes two L-shaped plates respectively disposed on both sides of the high-powered flashlight (4). The L-shaped plates include a first plate (91) and a second plate (92) that are perpendicular to each other. The first plate (91) is detachably connected to the high-powered flashlight (4) via a first bolt (93), and the second plate (92) is detachably connected to the movable block (82) via a second bolt.

9. The detection mechanism (11) for the cell disassembly device according to claim 8, characterized in that, The first plate (91) is provided with an arc groove (94), and the high-powered flashlight (4) is provided with a threaded hole on its body. The first plate (91) and the high-powered flashlight (4) are detachably connected by a first bolt (93) that passes through the arc groove (94) and the threaded hole in sequence.

10. A battery cell dismantling device, characterized in that, Includes the testing mechanism (11) for the cell dismantling device as described in any one of claims 1-9.

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