A lithium battery disassembly machine abnormality processing method

Abstract

The present invention provides a method for handling abnormalities in a lithium battery disassembling machine, the method comprising: placing a lithium battery cell on a hot cutting platform; identifying the thickness of the lithium battery cell, comparing the thickness of the lithium battery cell with the theoretical thickness, and adjusting the hot cutting starting position of the first cutter based on the comparison result; clamping the hot-cut lithium battery cell by a mechanical arm; disassembling the diaphragm of the lithium battery cell; detecting the state of the positive electrode diaphragm and the negative electrode diaphragm of the lithium battery cell being disassembled in real time by an identification mechanism; when it is detected that the positive electrode diaphragm or the negative electrode diaphragm is in a broken state, controlling the abnormal handling unit to work, synchronously stopping the diaphragm disassembly operation, and removing the current lithium battery cell. Through the present application, the problem of disassembly interruption caused by abnormal situations can be avoided, the efficient and automated operation of lithium battery disassembly is guaranteed, and the disassembly efficiency of lithium batteries is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery disassembly, and in particular to a method for handling abnormalities in a lithium battery disassembly machine. Background Art

[0002] With the shortage of energy and the pressure of environmental protection in the world, lithium batteries are widely used in the electric vehicle industry, especially the emergence of lithium iron phosphate batteries, which has promoted the development and application of the lithium battery industry. Lithium-ion batteries are also widely used in portable appliances such as laptops, cameras, and mobile communications due to their unique performance advantages.

[0003] At present, in the process of lithium battery disassembly, due to the different internal physical properties of waste lithium batteries, the different thickness of battery cells may cause insufficient hot cutting and separation, or excessive hot cutting may damage the positive and negative electrodes; the negative electrode may break, causing the automated disassembly process to be interrupted; the abnormal situation of the diaphragm not being separated in the air blowing process may cause the lithium battery disassembly to be interrupted, affecting the disassembly efficiency of the lithium battery. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a lithium battery disassembly machine abnormality processing method to solve the above-mentioned deficiencies in the prior art.

[0005] To achieve the above object, the present invention provides a method for handling abnormalities in a lithium battery disassembling machine, the method comprising:

[0006] Place the lithium battery cell on the hot cutting platform;

[0007] Identifying the thickness of the lithium battery cell by a first sensor, comparing the thickness of the lithium battery cell with a theoretical thickness, and adjusting a hot cutting starting position of a first cutter based on the comparison result;

[0008] Clamp the hot-cut lithium battery cell by a mechanical arm;

[0009] When the visual inspection unit identifies the drooping battery cell diaphragm disassembly end, the diaphragm of the lithium battery cell is disassembled;

[0010] The state of the positive electrode separator and the negative electrode separator of the lithium battery cell being disassembled is detected in real time by an identification mechanism;

[0011] When it is detected that the positive electrode diaphragm or the negative electrode diaphragm is in a broken state, the abnormality processing unit is controlled to work, the diaphragm disassembly operation on the lithium battery cell is synchronously stopped, and the lithium battery cell with the positive electrode diaphragm or the negative electrode diaphragm in a broken state is removed.

[0012] The beneficial effects of the present invention are as follows: the thickness of the lithium battery cell located on the hot cutting platform can be identified by the first sensor, and the hot cutting starting position of the first cutter can be adjusted according to the thickness of the lithium battery cell, so as to perform hot cutting on the lithium battery cell; the cell diaphragm disassembly end of the hot-cut lithium battery cell clamped by the robot arm and the direction of the cell diaphragm disassembly end can be identified by the visual detection unit, so as to determine whether to perform the cell diaphragm disassembly operation; and the positive electrode diaphragm state and the negative electrode diaphragm state of the lithium battery cell can be detected by the identification mechanism to control the working state of the abnormality handling unit, so as to complete the automated disassembly work, thereby realizing the above abnormal scenarios encountered in the disassembly process of scrapped lithium batteries, so as to enable the disassembly machine to make corresponding processing in time, avoid the problem of disassembly interruption caused by the above abnormal situations, ensure the efficient and automated operation of lithium battery disassembly, and improve the disassembly efficiency of lithium battery.

[0013] Preferably, the step of comparing the thickness of the lithium battery cell with the theoretical thickness and adjusting the hot cutting starting position of the first cutter based on the comparison result specifically includes:

[0014] When the thickness of the lithium battery cell is greater than the theoretical thickness, and the thickness of the lithium battery cell differs from the theoretical thickness by δ, controlling the first cutter to move upward by a distance of δ from an initially set position;

[0015] When the thickness of the lithium battery cell is less than the theoretical thickness, and the thickness of the lithium battery cell differs from the theoretical thickness by δ, controlling the first cutter to move downward by a distance of δ from the initial set position;

[0016] When the thickness of the lithium battery cell is equal to the theoretical thickness, the first cutter is controlled to perform hot cutting on the lithium battery cell at an initially set position.

[0017] Preferably, after the hot-cut lithium battery cell is clamped by a mechanical arm, the method further comprises:

[0018] When the visual detection unit fails to identify the drooping disassembled end of the battery cell diaphragm, it is determined that the corresponding lithium battery cell is in an abnormal state, and the lithium battery cell is treated as scrap.

[0019] Preferably, after real-time detection of the status of the positive electrode separator and the negative electrode separator of the lithium battery cell being disassembled by the identification mechanism, the method further comprises:

[0020] When it is detected that the positive electrode separator and the negative electrode separator are both in a normal state, the separator disassembly operation of the battery cell is continued.

[0021] Preferably, the visual inspection unit includes a first workbench and a visual camera and a background plate arranged on the first workbench, one end of the robotic arm is located between the visual camera and the background plate, and when the robotic arm clamps the lithium battery cell, the disassembled end of the cell diaphragm of the lithium battery cell droops and forms an image on the background plate, and the image falls within the field of view of the visual camera.

[0022] Preferably, the exception handling unit includes a first active roller, a second active roller and a second cutter, the first active roller and the second active roller are respectively used to fix the positive electrode diaphragm and the negative electrode diaphragm of the lithium battery cell, the second cutter is located between the first active roller and the second active roller, and the second cutter is controlled by a second driving cylinder to cut the diaphragm of the lithium battery cell.

[0023] Preferably, the diaphragm disassembly module also includes a second workbench, the first active roller, the second active roller and the second cutter are respectively located above the second workbench, and the first active roller and the second active roller are respectively shifted by the control of the third driving cylinder to press the positive electrode diaphragm and the negative electrode diaphragm onto the second workbench.

[0024] Preferably, when it is detected that the positive electrode separator or the negative electrode separator is in a broken state, the step of controlling the abnormality processing unit to operate includes:

[0025] Respectively controlling the first active roller and the second active roller to press the positive electrode separator and the negative electrode separator of the lithium battery cell onto the second workbench;

[0026] The second cutter is controlled by the second driving cylinder lever to cut the positive electrode diaphragm of the lithium battery cell, and then the second active roller and the second cutter are lifted to complete the abnormality handling operation.

[0027] Preferably, the abnormality handling unit includes a first recycling material frame and a second recycling material frame, the first recycling material frame and the second recycling material frame are respectively located at two ends of the second workbench, and the first recycling material frame and the second recycling material frame are respectively used to recycle the positive electrode diaphragm and the negative electrode diaphragm of the lithium battery cell.

[0028] Preferably, the identification mechanism includes a second sensor and a third sensor, the second sensor is used to detect the state of the positive electrode diaphragm of the lithium battery cell, the second sensor is located in the middle of the second workbench and close to the second active roller, and the third sensor is located at one end of the second workbench and is used to detect the state of the negative electrode diaphragm of the lithium battery cell.

[0029] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A flow chart of a method for handling abnormalities in a lithium battery disassembling machine provided in the first embodiment of the present invention;

[0031] Figure 2 A schematic structural diagram of a hot cutting module provided in a second embodiment of the present invention;

[0032] Figure 3 A schematic structural diagram of an air-blowing stripping module provided in a second embodiment of the present invention;

[0033] Figure 4 A schematic structural diagram of a diaphragm disassembly module provided in a second embodiment of the present invention at a first viewing angle;

[0034] Figure 5 A schematic structural diagram of a diaphragm disassembly module provided in a second embodiment of the present invention at a first viewing angle;

[0035] Figure 6 This is a functional structure diagram of a diaphragm disassembly module provided in the second embodiment of the present invention.

[0036] Description of main component symbols:

[0037] Hot cutting module 10 The first active roller 32 First sensor 11 Second active roller 33 Eager Platform 12 Second cutter 34 The first knife 13 Second workbench 35 Mounting Base 14 First recycling frame 36 Air Blow Stripping Module 20 Second recycling frame 37 Robotic Arm 21 Second sensor 41 First workbench 22 Third sensor 42 Vision Camera 23 Cathode separator 51 Background board 24 Negative electrode separator 52 Diaphragm disassembly module 30

[0038] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0042] See also Figure 1 , is a flow chart of a lithium battery dismantling machine abnormality handling method in a first embodiment of the present invention. The lithium battery dismantling machine abnormality handling method is applicable to a lithium battery dismantling machine, so that the lithium battery dismantling machine can timely handle certain specific abnormal conditions in the hot cutting module 10, the air blowing stripping module 20 and the diaphragm dismantling module 30 when dismantling scrapped lithium batteries, thereby avoiding dismantling interruptions, thereby ensuring efficient and automated dismantling of lithium batteries and improving the dismantling efficiency of lithium batteries. The lithium battery dismantling machine abnormality handling method includes the following steps:

[0043] Step S101, placing the lithium battery cell on the hot cutting platform 12;

[0044] The lithium battery cell is placed flat on the heat cutting platform 12, and the surface of the heat cutting platform 12 is parallel to the horizontal plane. It should be noted that an adsorption device is provided on the heat cutting platform 12 to adsorb and fix the lithium battery cell.

[0045] Step S102, identifying the thickness of the lithium battery cell by the first sensor 11, comparing the thickness of the lithium battery cell with a theoretical thickness, and adjusting the hot cutting starting position of the first cutter 13 based on the comparison result;

[0046] Among them, the lithium battery packs to be disassembled in the actual factory have inconsistent thicknesses of actual lithium battery cells due to inconsistent scrapping conditions. Therefore, it is necessary to determine whether the thickness of the lithium battery cell is at an appropriate thickness for cutting. The theoretical thickness is the appropriate thickness, and the theoretical thickness is based on the thickness of the lithium battery cell of the model being used in a normal state. It can be understood that the normal state indicates that the upper surface of the lithium battery cell does not have abnormal conditions such as warping, fluffiness or depression.

[0047] Step S103, clamping the hot-cut lithium battery cell by the robot arm 21;

[0048] Step S104, when the visual inspection unit identifies the drooping battery cell diaphragm disassembly end, the diaphragm of the lithium battery cell is disassembled;

[0049] Among them, the lithium battery cells after heat cutting are peeled off in the air blowing stage, forming the cell disassembly ends with drooping positive and negative electrode diaphragms. In order to avoid the abnormality caused by the failure of successful peeling of the cell diaphragm in the air blowing stage, a visual inspection unit is set up in this stage to identify whether there is a drooping cell disassembly end and identify the direction of the cell disassembly end to judge the subsequent disassembly rotation direction.

[0050] It should be noted that when the visual unit is unable to identify the drooping disassembled end of the battery cell diaphragm, it is judged that there is no abnormality and is treated as scrap.

[0051] Step S105, detecting the status of the positive electrode separator and the negative electrode separator of the lithium battery cell being disassembled in real time by means of an identification mechanism;

[0052] Among them, in actual scenarios, the positive electrode separator and the negative electrode separator of the lithium battery cell are both fragile materials and often break, resulting in inability to separate them. Therefore, the identification mechanism is set to detect the status of the positive electrode separator and the negative electrode separator.

[0053] Step S106, when it is detected that the positive electrode diaphragm or the negative electrode diaphragm is in a broken state, the abnormality processing unit is controlled to work, the diaphragm disassembly operation on the lithium battery cell is synchronously stopped, and the lithium battery cell with the positive electrode diaphragm or the negative electrode diaphragm in a broken state is removed.

[0054] Through the above steps, in the hot cutting module, the thickness of the lithium battery cell located on the hot cutting platform can be identified by the first sensor, and the hot cutting starting position of the first cutter can be adjusted according to the thickness of the lithium battery cell, so as to perform hot cutting on the lithium battery cell; in the air blowing stripping module, the cell diaphragm disassembly end of the hot-cut lithium battery cell clamped by the robot arm and the direction of the cell diaphragm disassembly end can be identified by the visual detection unit to determine whether to perform the cell diaphragm disassembly operation; and in the diaphragm disassembly module, the positive electrode diaphragm state and the negative electrode diaphragm state of the lithium battery cell can be detected by the identification mechanism to control the working state of the abnormality handling unit, so as to complete the automated disassembly work, thereby realizing the above abnormal scenarios encountered in the disassembly process of scrapped lithium batteries, so that the disassembly machine can make corresponding processing in time, avoiding the problem of disassembly interruption caused by the above abnormal situations, ensuring the efficient and automated operation of lithium battery disassembly, and improving the disassembly efficiency of lithium batteries.

[0055] In this embodiment, the steps of comparing the thickness of the lithium battery cell with the theoretical thickness and adjusting the hot cutting starting position of the first cutter 13 based on the comparison result to hot cut the lithium battery cell specifically include:

[0056] When the thickness of the lithium battery cell is greater than the theoretical thickness, and the thickness of the lithium battery cell differs from the theoretical thickness by δ, controlling the first cutter 13 to move upward by a distance of δ from the initial setting position;

[0057] When the thickness of the lithium battery cell is less than the theoretical thickness, and the thickness of the lithium battery cell differs from the theoretical thickness by δ, controlling the first cutter 13 to move downward by a distance of δ from the initial setting position;

[0058] When the thickness of the lithium battery cell is equal to the theoretical thickness, the first cutter 13 is controlled to perform hot cutting on the lithium battery cell at an initially set position.

[0059] In this embodiment, after the hot-cut lithium battery cell is clamped by a mechanical arm, the method further includes:

[0060] When the visual detection unit fails to identify the drooping disassembled end of the battery cell diaphragm, it is determined that the corresponding lithium battery cell is in an abnormal state, and the lithium battery cell is treated as scrap.

[0061] In some embodiments, the visual inspection unit includes a first workbench 22 and a visual camera 23 and a background plate 24 arranged on the first workbench 22. One end of the robotic arm 21 is located between the visual camera 23 and the background plate 24. When the robotic arm 21 clamps the lithium battery cell, the disassembled end of the cell diaphragm of the lithium battery cell droops and forms an image on the background plate 24. The image falls within the field of view of the visual camera 23.

[0062] It can be understood that when the visual camera 23 is able to capture the image of the cell diaphragm disassembly end projected on the background plate 24, it means that the air blowing stripping module has successfully stripped the lithium battery cell and sent a start signal for the next step of diaphragm disassembly to start the diaphragm disassembly operation.

[0063] In some of the embodiments, the exception handling unit includes a first active roller 32, a second active roller 33 and a second cutter 34, the first active roller 32 and the second active roller 33 are respectively used to fix the positive electrode diaphragm end and the negative electrode diaphragm end of the lithium battery cell, the second cutter 34 is located at the center position between the first active roller 32 and the second active roller 33, and the second cutter 34 is controlled by a second driving cylinder to cut the diaphragm of the lithium battery cell.

[0064] In some embodiments, the diaphragm disassembly module 30 further includes a second workbench 35, the diaphragm of the lithium battery cell is laid flat on the second workbench 35, the positive diaphragm and the negative diaphragm of the lithium battery cell are laid flat toward the two ends of the second workbench 35, the first active roller 32, the second active roller 33 and the second cutter 34 are respectively located above the second workbench 35, the first active roller 32 and the second active roller 33 are respectively driven downward by two third driving cylinders to press the positive diaphragm and the negative diaphragm of the lithium battery cell onto the second workbench 35. It should be noted that the second sensor 31 is installed on the second workbench 35 through a mounting bracket and is located at one end of the second workbench 35, the second driving cylinder and the third driving cylinder are respectively installed on the second workbench 35, and the first active roller 32, the second active roller 33 and the second cutter 34 are respectively slidably connected to the second workbench 35.

[0065] In this embodiment, when it is detected that the positive electrode separator or the negative electrode separator is in a broken state, the step of controlling the abnormality processing unit to work includes:

[0066] Respectively controlling the first active roller 32 and the second active roller 33 to press the positive electrode diaphragm and the negative electrode diaphragm of the lithium battery cell onto the second workbench 35;

[0067] The second cutter 34 is controlled by the second driving cylinder lever to cut the positive electrode diaphragm of the lithium battery cell, and then the second active roller 33 and the second cutter 34 are lifted to complete the abnormality handling operation.

[0068] In this embodiment, after the status of the positive electrode separator and the negative electrode separator of the lithium battery cell being disassembled is detected in real time by the identification mechanism, the method further includes:

[0069] When it is detected that the positive electrode separator and the negative electrode separator are both in a normal state, the separator disassembly operation of the battery cell is continued.

[0070] The normal state is a state in which the negative electrode separator is not broken.

[0071] In some embodiments, the abnormality handling unit includes a first recycling material frame 36 and a second recycling material frame 37, the first recycling material frame 36 and the second recycling material frame 37 are respectively located at two ends of the second workbench 35, and the first recycling material frame 36 and the second recycling material frame 37 are respectively used to recycle the positive electrode diaphragm and the negative electrode diaphragm of the lithium battery cell.

[0072] In some embodiments, the first sensor 11 and the first cutter 13 are both located above the hot cutting platform 12, and the first cutter 13 is moved to the hot cutting starting position by the control of the first driving cylinder.

[0073] In some embodiments, the identification mechanism includes a second sensor 41 and a third sensor 42, the second sensor 41 is used to detect the state of the positive electrode diaphragm of the lithium battery cell, the second sensor 41 is located in the middle of the second workbench 35 and close to the second active roller 33, and the third sensor 42 is located at one end of the second workbench 35 and is used to detect the state of the negative electrode diaphragm of the lithium battery cell.

[0074] It should be noted that the steps shown in the above process or the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0075] like Figures 2 to 6 As shown, a lithium battery disassembling machine provided in the second embodiment of the present invention is applied to the lithium battery disassembling machine abnormality handling method in the above-mentioned first embodiment, wherein the lithium battery disassembling machine includes a hot cutting module 10, an air blowing stripping module 20 and a diaphragm disassembling module 30.

[0076] Among them: the hot cutting module 10 includes a first sensor 11, a hot cutting platform 12 and a first cutter 13. The hot cutting module 10 can identify the thickness of the lithium battery cell located on the hot cutting platform 12 through the first sensor 11 to adjust the hot cutting starting position of the first cutter 13; the air blowing stripping module 20 includes a mechanical arm 21 and a visual detection unit. The air blowing stripping module 20 can identify the cell diaphragm disassembly end of the lithium battery cell clamped by the mechanical arm 21 and the direction of the cell diaphragm disassembly end through the visual detection unit to strip the diaphragm of the lithium battery cell; the diaphragm disassembly module 30 includes an identification mechanism and an abnormality handling unit. The diaphragm disassembly module 30 is used to detect the positive electrode diaphragm state and the negative electrode diaphragm state of the lithium battery cell through the identification mechanism to control the working state of the abnormality handling unit.

[0077] It should be noted that the disassembly of scrapped lithium batteries usually needs to go through the battery cell loading link, battery cell hot cutting link, diaphragm air blowing separation link and positive and negative electrode diaphragm separation link in sequence, and there are usually corresponding abnormal situations in these parts. For example, in the battery cell hot cutting link, the thickness of the lithium battery cell is different, resulting in inadequate hot cutting or excessive hot cutting causing damage to the positive and negative electrodes of the battery cell. It can be understood that the use of the lithium battery disassembly machine of the present application, because it is provided with a corresponding abnormal situation handling procedure, for the above abnormal situations encountered during the disassembly of scrapped lithium batteries, the disassembly machine can make corresponding processing in time, avoiding the problem of disassembly interruption caused by the above abnormal situations, ensuring the efficient and automated operation of lithium battery disassembly, and improving the disassembly efficiency of lithium batteries.

[0078] In this embodiment, the hot cutting module 10 also includes a mounting base 14, a first sensor 11, a hot cutting platform 12 and a first cutter 13 are respectively mounted on the mounting base 14, the first sensor 11 and the first cutter 13 are both located above the hot cutting platform 12, and the first cutter 13 is moved to a hot cutting starting position by the control of a first driving cylinder. It can be understood that when it is necessary to start the disassembly of the lithium battery, the lithium battery cell is first placed flat on the hot cutting platform 12, and the hot cutting platform 12 fixes the lithium battery cell on the hot cutting platform 12 by vacuum adsorption, and then the first sensor 11 is used to identify the thickness of the lithium battery cell, and the first driving cylinder controls the first cutter 13 to move to the hot cutting starting position according to the thickness of the lithium battery cell, and after adjusting the position of the first cutter 13, the lithium battery cell is hot cut according to a preset hot cutting program.

[0079] It should be noted that the lithium battery packs to be disassembled in the actual factory have different scrapping conditions, resulting in different thicknesses of the actual lithium battery cells. The cells are placed on the hot cutting platform 12 after loading, and their lower surfaces are relatively flat due to contact with the hot cutting platform 12. However, the upper surfaces of the cells may be warped, fluffy or concave, and other abnormal conditions. The actual thickness of the lithium battery cell is identified by the first sensor 11. Specifically, after the first sensor 11 is installed relative to the hot cutting platform 12, the distance between the first sensor 11 and the bearing surface of the hot cutting platform 12 is measured by the first sensor 11. When the hot cutting When a lithium battery cell is placed on the platform 12, the first sensor 11 is used to measure the distance h0 from the upper surface of the lithium battery cell to obtain the actual thickness h1 of the lithium battery cell, and then the difference between h0 and h1 is compared, and then the difference between h0 and h1 is compared with the preset theoretical thickness d1. The program in the lithium battery disassembly machine of the present application determines the thickness δ of the lithium battery cell based on these values, and adjusts the hot cutting starting position of the first cutter 13, that is, moves the distance δ accordingly, to ensure that the diaphragm on the surface of the lithium battery cell can be accurately cut off to complete the hot cutting process.

[0080] In this embodiment, the visual inspection unit includes a first workbench 22, a visual camera 23 arranged on the workbench, and a background board 24. The first workbench 22 and the hot cutting platform 12 are respectively close to the robotic arm 21. When the hot cutting process is completed, the robotic arm 21 can clamp the hot-cut lithium battery cells from the hot cutting platform 12 and transfer the lithium battery cells to the top of the first workbench 22, thereby starting the diaphragm air blowing separation process.

[0081] It should be noted that the visual camera 23 and the background plate 24 are respectively installed on the first workbench 22, and a gap is left between the visual camera 23 and the background plate 24. One end of the robotic arm 21 can be rotated to be located between the visual camera 23 and the background plate 24, so that the lithium battery cell clamped by the robotic arm 21 can have its cell diaphragm disassembled end drooped and form an image on the background plate 24 after passing through the diaphragm air blowing separation stage, and the image will fall within the field of view of the visual camera 23, thereby avoiding the abnormal situation caused by the failure of successfully peeling off the cell diaphragm in the air blowing separation stage.

[0082] It can be understood that when the lithium battery cell clamped by the robot arm 21 passes through the diaphragm air blowing separation stage, there is no drooping battery cell diaphragm disassembly end, and the visual camera 23 cannot capture the image, which means that the air blowing separation stage has failed to successfully peel off the battery cell diaphragm, the lithium battery cell is in an abnormal state, and the lithium battery cell is treated as scrap.

[0083] In this embodiment, the abnormality handling unit includes a first active roller 32, a second active roller 33 and a second cutter 34. The first active roller 32 and the second active roller 33 are respectively used to fix the positive electrode diaphragm end and the negative electrode diaphragm end of the lithium battery cell. The second cutter 34 is located at the center position between the first active roller 32 and the second active roller 33. The second cutter 34 is controlled by a second driving cylinder to cut the diaphragm of the lithium battery cell.

[0084] The diaphragm disassembly module 30 also includes a second workbench 35. The diaphragm of the lithium battery cell is laid flat on the second workbench 35. The positive diaphragm and the negative diaphragm of the lithium battery cell are laid flat toward the two ends of the second workbench 35 respectively. The first active roller 32, the second active roller 33 and the second cutter 34 are respectively located above the second workbench 35. The first active roller 32 and the second active roller 33 are respectively driven downward by two third driving cylinders to press the positive diaphragm and the negative diaphragm of the lithium battery cell onto the second workbench 35.

[0085] In this embodiment, the identification mechanism includes a second sensor 41 and a third sensor 42, and the second sensor 41 and the third sensor 42 are respectively installed on the second workbench 35 through mounting brackets. The second sensor 41 is used to detect the state of the positive electrode diaphragm of the lithium battery cell. The second sensor 41 is located in the middle of the second workbench 35 and close to the second active roller 33. The third sensor 42 is located at one end of the second workbench 35 and is used to detect the state of the negative electrode diaphragm of the lithium battery cell.

[0086] It should be noted that the second driving cylinder and the third driving cylinder are respectively installed on the second workbench 35 , and the first active roller 32 , the second active roller 33 and the second cutter 34 are respectively slidably connected to the second workbench 35 .

[0087] It can be understood that when the second sensor 41 or the third sensor 42 identifies that the positive electrode diaphragm state or the negative electrode diaphragm state of the lithium battery cell is in the abnormal state of broken, the first active roller 32 and the second active roller 33 are controlled to press down respectively to compress the positive electrode diaphragm and the negative electrode diaphragm of the lithium battery cell, and the second driving cylinder is controlled to work to drive the second cutter 34 to cut the positive electrode diaphragm, and then the second active roller 33 and the second cutter 34 are lifted by the third driving cylinder and the second driving cylinder respectively to complete the abnormal processing, so that the lithium battery cell is treated as scrap, and the next scrapped lithium battery cell is disassembled.

[0088] In this embodiment, the diaphragm disassembly module 30 also includes a first recycling material frame 36 and a second recycling material frame 37, which are respectively located at the two ends of the second workbench 35, and the first recycling material frame 36 and the second recycling material frame 37 are respectively used to recycle the positive electrode diaphragm and the negative electrode diaphragm of the lithium battery cell.

[0089] Specifically, when the above-mentioned visual inspection unit identifies the drooping battery cell diaphragm disassembly end, the lithium battery cell that has successfully completed the diaphragm air blowing separation link is transferred to the top of the second workbench 35 through the robotic arm 21, and enters the positive and negative electrode diaphragm disassembly link to disassemble the positive electrode diaphragm and the negative electrode diaphragm of the lithium battery cell into the first recycling material frame 36 and the second recycling material frame 37 respectively. During the disassembly process, the first active roller 32 will press the positive electrode diaphragm, and cooperate with the end picker of the robotic arm 21 to rotate around a fulcrum, and synchronously drive the lithium battery cell to rotate, so that the lithium battery cell can be disassembled while rotating, and the positive electrode diaphragm falls into the first recycling material frame 36, and the negative electrode diaphragm falls into the second recycling material frame 37.

[0090] It should be noted that, since the positive electrode separator and the negative electrode separator are fragile materials, they often break, resulting in the inability to separate the positive electrode separator and the negative electrode separator, causing the separator disassembly work to be interrupted, affecting work efficiency. In order to avoid this situation, the second sensor 41 and the third sensor 42 are used to detect whether the positive electrode separator and the negative electrode separator exist respectively. When the second sensor 41 can detect the positive electrode separator and the third sensor 42 can detect the negative electrode separator, it means that the separator disassembly work is operating normally. When the second sensor 41 or the third sensor 42 cannot detect the positive electrode separator or the negative electrode separator, it means that the above abnormal situation causes the disassembly work to be interrupted, that is, the negative electrode separator of the lithium battery cell is identified as the abnormal state of breakage, and then the second driving cylinder is controlled to work to drive the second cutter 34 to cut the positive electrode separator, and then the second active roller 33 and the second cutter 34 are lifted by the third driving cylinder and the second driving cylinder respectively, to complete the abnormal processing, and the lithium battery cell is treated as scrap.

[0091] In the specific implementation, a hot cutting module 10, an air blowing stripping module 20 and a diaphragm disassembly module 30 are set, and the first sensor 11 is used in the hot cutting module 10 to identify the thickness of the lithium battery cell located on the hot cutting platform 12, and the hot cutting starting position of the first cutter 13 is adjusted according to the thickness of the lithium battery cell, so as to perform hot cutting on the lithium battery cell, and the visual detection unit is used in the air blowing stripping module 20 to identify the cell diaphragm disassembly end of the hot-cut lithium battery cell clamped by the mechanical arm 21 and the direction of the cell diaphragm disassembly end, so as to determine whether to perform the cell diaphragm disassembly operation, and the positive electrode diaphragm state and the negative electrode diaphragm state of the lithium battery cell are detected by the identification mechanism in the diaphragm disassembly module 30 to control the working state of the abnormal processing unit, so as to complete the automated disassembly work, through the above settings, for the above abnormal scenarios encountered in the disassembly process of scrapped lithium batteries, the disassembly machine can make corresponding processing in time, avoiding the problem of disassembly interruption caused by the above abnormal situations, ensuring the efficient and automated operation of lithium battery disassembly, and improving the disassembly efficiency of lithium batteries.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0093] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for handling abnormalities in a lithium battery dismantling machine, characterized in that: The method comprises: Place the lithium battery cell on the hot cutting platform; The steps of identifying the thickness of the lithium battery cell by a first sensor, comparing the thickness of the lithium battery cell with a theoretical thickness, and adjusting the hot cutting starting position of the first cutter based on the comparison result specifically include: When the thickness of the lithium battery cell is greater than the theoretical thickness, and the thickness of the lithium battery cell differs from the theoretical thickness by δ, controlling the first cutter to move upward by a distance of δ from an initially set position; When the thickness of the lithium battery cell is less than the theoretical thickness, and the thickness of the lithium battery cell differs from the theoretical thickness by δ, controlling the first cutter to move downward by a distance of δ from the initial set position; When the thickness of the lithium battery cell is equal to the theoretical thickness, controlling the first cutter to perform hot cutting on the lithium battery cell at an initially set position, and clamping the hot-cut lithium battery cell by a mechanical arm; When the visual inspection unit identifies the drooping battery cell diaphragm disassembly end, the diaphragm of the lithium battery cell is disassembled; The state of the positive electrode separator and the negative electrode separator of the lithium battery cell being disassembled is detected in real time by an identification mechanism; When it is detected that the positive electrode diaphragm or the negative electrode diaphragm is in a broken state, the abnormality processing unit is controlled to work, the diaphragm disassembly operation on the lithium battery cell is synchronously stopped, and the lithium battery cell with the positive electrode diaphragm or the negative electrode diaphragm in a broken state is removed.

2. The abnormality handling method of a lithium battery dismantling machine according to claim 1, characterized in that: After the hot-cut lithium battery cell is clamped by a mechanical arm, the method further comprises: When the visual detection unit fails to identify the drooping disassembled end of the battery cell diaphragm, it is determined that the corresponding lithium battery cell is in an abnormal state, and the lithium battery cell is treated as scrap.

3. The abnormality handling method of a lithium battery dismantling machine according to claim 1, characterized in that: After the status of the positive electrode separator and the negative electrode separator of the lithium battery cell being disassembled is detected in real time by the identification mechanism, the method further includes: When it is detected that the positive electrode separator and the negative electrode separator are both in a normal state, the separator disassembly operation of the battery cell is continued.

4. The abnormality handling method of a lithium battery dismantling machine according to claim 1, characterized in that: The visual inspection unit includes a first workbench and a visual camera and a background plate arranged on the first workbench. One end of the robotic arm is located between the visual camera and the background plate. When the robotic arm clamps the lithium battery cell, the disassembled end of the cell diaphragm of the lithium battery cell droops and forms an image on the background plate. The image falls within the field of view of the visual camera.

5. The abnormality handling method of a lithium battery dismantling machine according to claim 1, characterized in that: The abnormality handling unit includes a first active roller, a second active roller and a second cutter, the first active roller and the second active roller are respectively used to fix the positive electrode diaphragm and the negative electrode diaphragm of the lithium battery cell, the second cutter is located between the first active roller and the second active roller, and the second cutter is controlled by a second driving cylinder to cut the diaphragm of the lithium battery cell.

6. The abnormality handling method of a lithium battery dismantling machine according to claim 5, characterized in that: The diaphragm disassembly module also includes a second workbench, the first active roller, the second active roller and the second cutter are respectively located above the second workbench, and the first active roller and the second active roller are respectively shifted by the control of the third driving cylinder to press the positive electrode diaphragm and the negative electrode diaphragm onto the second workbench.

7. The abnormality handling method of a lithium battery dismantling machine according to claim 6, characterized in that: When the positive electrode separator or the negative electrode separator is detected to be in a broken state, the step of controlling the abnormality processing unit to operate includes: Respectively controlling the first active roller and the second active roller to press the positive electrode separator and the negative electrode separator of the lithium battery cell onto the second workbench; The second cutter is controlled by the second driving cylinder lever to cut the positive electrode diaphragm of the lithium battery cell, and then the second active roller and the second cutter are lifted to complete the abnormality handling operation.

8. The abnormality handling method of a lithium battery dismantling machine according to claim 6, characterized in that: The abnormality handling unit includes a first recycling material frame and a second recycling material frame, the first recycling material frame and the second recycling material frame are respectively located at two ends of the second workbench, and the first recycling material frame and the second recycling material frame are respectively used to recycle the positive electrode diaphragm and the negative electrode diaphragm of the lithium battery cell.

9. The abnormality handling method of a lithium battery dismantling machine according to claim 6, characterized in that: The identification mechanism includes a second sensor and a third sensor, the second sensor is used to detect the state of the positive electrode diaphragm of the lithium battery cell, the second sensor is located in the middle of the second workbench and close to the second active roller, and the third sensor is located at one end of the second workbench and is used to detect the state of the negative electrode diaphragm of the lithium battery cell.

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