Battery cell cutting device and battery recycling equipment

Abstract

The utility model belongs to the technical field of battery cell recycling, and discloses a battery cell cutting device and battery recycling equipment, the battery cell cutting device comprises a cutting platform, a positioning assembly, a liquid cutting assembly and a cutting driving assembly, the cutting platform is used for placing battery cell monomers, the positioning assembly is used for positioning a battery cell shell, and the liquid cutting assembly is used for cutting the battery cell shells. The liquid cutting assembly is located above the cutting platform and comprises a cutting head, a liquid supply unit and an abrasive supply unit, and the liquid outlet end of the liquid supply unit and the discharging end of the abrasive supply unit both communicate with a feeding port of the cutting head. The cutting driving assembly is used for driving the cutting head to move to a target cutting position; the battery recycling equipment comprises the battery cell cutting device. According to the battery cell cutting device, a liquid abrasive mixture is sprayed to a battery cell shell to cut the battery cell shell, it can be guaranteed that the position of a cutting seam is accurate and reliable, cuttings and smoke are effectively avoided, and healthy and safe operation of operators is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cell recycling, in particular to a battery cell cutting device and battery recycling equipment. Background Art

[0002] At present, the lithium battery industry chain is becoming increasingly complete, and it occupies a dominant position in many core supply chains in the field of power and energy storage batteries. The predicted average life of lithium batteries is 5-8 years. As the total amount of retired batteries increases, material recycling and reuse will form economies of scale. In addition, the waste rate in the production process of lithium batteries is about 5%-10%, and the defective battery cells are also increasing with the increase in lithium battery production capacity. Considering factors such as economic benefits and environmental friendliness, it is of great significance to safely and non-destructively disassemble and dispose of retired batteries and defective battery cells.

[0003] In recent years, technicians in related fields have been constantly exploring new cell disassembly process routes to carry out refined disassembly of retired cells. At present, the upper cover of the cell is generally cut open by saw blade cutting, and then the core inside the cell is pushed out by a push device such as a cylinder or a screw module to separate the outer shell of the cell from the internal core.

[0004] When using a saw blade to cut a battery cell, the high-speed friction between the saw blade and the shell of the battery cell causes the saw blade to heat up and deform, which will cause the slit to shift and the actual slit position to deviate from the target cutting position, thus causing damage to the internal winding core. In addition, the chips, dust, sparks and smoke generated during the cutting process will also affect the cutting work and health of the operator. Utility Model Content

[0005] The purpose of the utility model is to provide a battery cell cutting device and battery recycling equipment, which can improve the accuracy of the cutting position and avoid the damage of the winding core inside the battery cell due to cutting; it can also effectively avoid the generation of chips and smoke to ensure the health and safety of operators.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A cell cutting device is used for cutting a cell shell of a cell monomer, the cell cutting device comprising:

[0008] A cutting platform, the cutting platform is used to place the battery cell monomer;

[0009] A positioning component, used for positioning the battery cell housing along the X, Y and Z directions, and exposing a target cutting position on the battery cell housing;

[0010] A liquid cutting assembly is located above the cutting platform, the liquid cutting assembly comprises a cutting head, a liquid supply unit and an abrasive supply unit, the liquid outlet end of the liquid supply unit and the material outlet end of the abrasive supply unit are both connected to the material feed port of the cutting head;

[0011] The cutting drive assembly is used to drive the cutting head to move along the X direction, the Y direction and the Z direction so that the jet port of the cutting head sprays the liquid abrasive mixture toward the target cutting position. The X direction, the Y direction and the Z direction are perpendicular to each other, and the Y direction is the vertical direction.

[0012] Optionally, the positioning component includes:

[0013] An X-direction stopper, the X-direction stopper is connected to the cutting platform, and the X-direction stopper can abut against the battery cell housing along the X-direction;

[0014] A Y-direction stopper, the Y-direction stopper is connected to the cutting platform, and the Y-direction stopper can abut against the battery cell housing along the Y direction;

[0015] A Z-direction stopper can abut against the upper surface of the battery cell housing along the Z direction.

[0016] Optionally, the liquid supply unit comprises a high-pressure pump, the inlet of the high-pressure pump is used to connect to a liquid source; the abrasive supply unit comprises an abrasive container, and the cutting head comprises:

[0017] An ejector, the ejector having a high-pressure liquid inlet and an ejection port, the outlet of the high-pressure pump is connected to the high-pressure liquid inlet through a liquid inlet pipe, and the abrasive container is connected to the ejection port through an abrasive pipe;

[0018] A cutting nozzle, a high-pressure injection port is provided at the bottom of the ejector, and a top feed port of the cutting nozzle is connected to the high-pressure injection port.

[0019] Optionally, the liquid cutting assembly further comprises a nozzle cover plate fixedly sleeved on the outside of the cutting nozzle, the lower end of the cutting nozzle passes through the nozzle cover plate, and the nozzle cover plate is arranged horizontally.

[0020] Optionally, the cutting drive assembly comprises:

[0021] Two X-direction drive units, the X-direction drive units comprising an X-direction mounting portion connected to the cutting platform, an X-direction sliding portion slidingly matched with the X-direction mounting portion along the X-direction, and an X-direction driving member driving the X-direction sliding portion to move along the X-direction; the two X-direction mounting portions are mounted at both ends of the cutting platform in the Y-direction;

[0022] The Y-direction driving unit comprises a Y-direction mounting portion, a Y-direction sliding portion slidingly matched with the Y-direction mounting portion along the Y-direction, and a Y-direction driving member driving the Y-direction sliding portion to move along the Y-direction; the Y-direction mounting portion is respectively connected to the two X-direction sliding portions at both ends of the Y-direction;

[0023] The Z-direction driving unit comprises a Z-direction mounting portion connected to the Y-direction sliding portion, a Z-direction sliding portion slidingly matched with the Z-direction mounting portion along the Z-direction, and a Z-direction driving member driving the Z-direction sliding portion to move along the Z-direction; the Z-direction sliding portion is connected to the cutting head.

[0024] Optionally, a first position detection member is provided on the X-direction mounting portion, for detecting the position of the X-direction sliding portion relative to the X-direction mounting portion;

[0025] And / or, a second position detection member is provided on the Y-direction mounting portion for detecting the position of the Y-direction sliding portion relative to the Y-direction mounting portion;

[0026] And / or, a third position detection component is provided on the Z-direction mounting portion for detecting the position of the Z-direction sliding portion relative to the Z-direction mounting portion.

[0027] Optionally, the output end of the cutting drive assembly is connected to a mounting bracket, the mounting bracket is provided with a through hole arranged to penetrate along the Z direction, and the lower end of the cutting head passes through the through hole;

[0028] The cutting head is provided with a limiting convex portion, the cutting head is threadedly connected with a locking nut, and the mounting bracket is clamped between the locking nut and the limiting convex portion along the Z direction.

[0029] Optionally, the inner diameter of the through hole is larger than the outer diameter of the cutting head placed in the through hole, and the outer side wall of the mounting bracket is provided with a through hole extending through along the Z direction, and the radial side of the through hole extends to the inner peripheral wall of the through hole;

[0030] The two opposite inner walls of the through hole are respectively provided with a mounting through hole and a locking hole. The first fastener passes through the mounting through hole and is threadedly connected to the locking hole to fix the cutting head to the mounting bracket.

[0031] Optionally, the cutting platform includes a hollowed-out cutting support portion, and a circulation pool provided below the cutting support portion, wherein the circulation pool is used to receive the liquid abrasive mixture falling through the through holes on the cutting support portion;

[0032] The battery core cutting device further comprises a filter assembly for filtering abrasives in the liquid abrasive mixture in the circulation pool, and the liquid supply unit is used to deliver the liquid filtered by the filter assembly into the cutting head.

[0033] A battery recycling device comprises any one of the battery cell cutting devices described above.

[0034] Beneficial effects:

[0035] The battery cell cutting device and battery recycling equipment provided by the utility model, when cutting, place the battery cell monomer on the cutting platform, and locate the target cutting position on the battery cell shell of the battery cell monomer through the positioning component. After the positioning is completed, the liquid supply unit and the abrasive supply unit respectively supply high-pressure liquid and abrasive into the cutting head. The cutting head is driven to move by the cutting drive component, so that the injection port of the cutting head sprays the liquid abrasive mixture to the target cutting position to cut the battery cell shell, and the liquid injection and the hardness reinforcement of the abrasive particles are used to quickly and accurately liquid cut the battery cell shell. On the one hand, it can ensure that the cutting seam is accurate and will not damage the current collector, diaphragm and other parts of the internal winding core of the battery cell monomer. On the other hand, it can effectively suppress the generation of chips, dust, sparks and smoke, ensure the safety of the working environment, and the safety of the entire working environment is guaranteed to ensure the safety and health of the workers on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the battery core cutting device provided by the utility model;

[0037] Figure 2 It is a schematic diagram of the structure of an existing battery cell;

[0038] Figure 3 It is a schematic diagram of the cutting platform and the positioning component parts provided by the utility model;

[0039] Figure 4 It is a structural schematic diagram of the cutting head provided by the utility model;

[0040] Figure 5 It is a structural schematic diagram of the X-direction drive unit provided by the utility model;

[0041] Figure 6 It is a structural schematic diagram of the Y-direction drive unit provided by the utility model;

[0042] Figure 7 It is a structural schematic diagram of the Z-direction drive unit provided by the utility model;

[0043] Figure 8 is a schematic structural diagram of a Z-direction drive unit provided by an optional embodiment;

[0044] Fig. 9 It is a schematic diagram of the connection part between the cutting head and the mounting bracket provided by the utility model;

[0045] Fig.10 It is a structural schematic diagram of the circulation pool provided by the utility model.

[0046] In the figure:

[0047] 1. cutting platform; 11. cutting support part; 111. through hole; 12. cutting bracket;

[0048] 2. Positioning assembly; 21. X-axis stopper; 22. Y-axis stopper;

[0049] 3. Liquid cutting assembly; 31. Cutting head; 311. Ejector; 312. Cutting nozzle; 313. Position limiting convex portion; 32. Abrasive supply unit; 33. High-pressure pump; 341. Liquid inlet pipe; 342. Abrasive pipe; 35. Nozzle cover plate; 36. Locking nut;

[0050] 4. Cutting drive assembly; 41. X-axis drive unit; 411. X-axis slide rail; 412. X-axis sliding part; 413. First support frame; 414. Air delivery head; 42. Y-axis drive unit; 421. Y-axis slide rail; 422. Y-axis sliding part; 423. Second support frame; 43. Z-axis drive unit; 431. Z-axis slide rail; 432. Z-axis sliding part; 433. Third support frame; 434. Motor; 435. Screw rod; 441. First position detection member; 442. Second position detection member; 443. Third position detection member; 45. Mounting bracket; 451. Through hole; 452. Through hole; 453. Mounting through hole; 454. First connecting hole; 455. First pin hole; 46. Connecting arm;

[0051] 5. Circulation pool;

[0052] 6. Battery cell. DETAILED DESCRIPTION

[0053] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0054] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0057] This embodiment provides a battery cell cutting device. Figure 1 to Figure 2 As shown, the cell cutting device is used to cut the cell shell of the cell unit 6. Specifically, the upper cover plate of the cell shell is cut.

[0058] The battery cell cutting device includes a cutting platform 1, a positioning component 2, a liquid cutting component 3 and a cutting drive component 4. The cutting platform 1 is used to place a battery cell 6. The positioning component 2 is used to position the battery cell shell along the X direction, the Y direction and the Z direction, and to expose the target cutting position on the battery cell shell. The liquid cutting component 3 is located above the cutting platform 1. The liquid cutting component 3 includes a cutting head 31, a liquid supply unit and an abrasive supply unit 32. The liquid outlet end of the liquid supply unit and the material outlet end of the abrasive supply unit 32 are both connected to the feed port of the cutting head 31. The cutting drive component 4 is used to drive the cutting head 31 to move along the X direction, the Y direction and the Z direction, so that the injection port of the cutting head 31 sprays a liquid abrasive mixture to the target cutting position to cut the battery cell shell. The X direction, the Y direction and the Z direction are perpendicular to each other, and the Z direction is a vertical direction.

[0059] In this embodiment, the X direction and the Y direction are two mutually perpendicular horizontal directions, and the Z direction is a vertical direction.

[0060] When cutting, place the battery cell 6 on the cutting platform 1, and position the battery cell shell of the battery cell 6 through the positioning component 2. After positioning, the liquid supply unit and the abrasive supply unit 32 supply high-pressure liquid and abrasive into the cutting head 31 respectively. The cutting drive component 4 drives the cutting head 31 to move, so that the injection port of the cutting head 31 sprays the liquid abrasive mixture to the target cutting position to cut the battery cell shell, and the liquid injection and the hardness reinforcement of the abrasive particles are used to quickly and accurately liquid cut the battery cell shell. On the one hand, it can ensure accurate cutting without damaging the current collector, diaphragm and other parts of the internal winding core of the battery cell 6. On the other hand, it can also effectively suppress the generation of chips, dust, sparks and smoke to ensure the safety of the working environment.

[0061] Exemplarily, the high-pressure liquid is set to water, and the abrasive is set to corundum or garnet.

[0062] Further, refer to Figure 3 As shown, the positioning assembly 2 includes an X-direction stopper 21, a Y-direction stopper 22 and a Z-direction stopper (not shown). Among them, the X-direction stopper 21 is connected to the cutting platform 1, and the X-direction stopper 21 can abut against the battery cell housing along the X direction; the Y-direction stopper 22 is connected to the cutting platform 1, and the Y-direction stopper 22 can abut against the battery cell housing along the Y direction; the Z-direction stopper can abut against the upper surface of the battery cell housing along the Z direction. The cooperation of the X-direction stopper 21 and the Y-direction stopper 22 can limit the battery cell housing in the X direction and the Y direction, and prevent the battery cell housing from moving horizontally relative to the cutting platform 1. By abutting the Z-direction stopper downward against the upper surface of the battery cell housing, the battery cell housing is positioned in the Z direction.

[0063] Exemplarily, the Z-direction stopper is placed on the upper surface of the battery cell 6 , and the battery cell 6 is vertically pressed by its own gravity, and the X-direction stopper 21 and the Y-direction stopper 22 can further ensure the fixation of the battery cell 6 .

[0064] Further, refer to Figure 1 and Figure 4 As shown, the liquid supply unit includes a high-pressure pump 33, the inlet of the high-pressure pump 33 is used to connect to the liquid source, and the abrasive supply unit 32 includes an abrasive container. The cutting head 31 includes an ejector 311 and a cutting nozzle 312, wherein the ejector 311 is provided with a high-pressure liquid inlet (not shown) and an ejection port (not shown), the high-pressure liquid inlet is connected to the outlet of the high-pressure pump 33 through a liquid inlet pipe 341, and the ejection port is connected to the abrasive container through an abrasive pipe 342. A high-pressure ejection port is provided at the bottom of the ejector 311, and a top feed port of the cutting nozzle 312 is connected to the high-pressure ejection port.

[0065] Specifically, the ejector 311 has a mixing chamber (not shown) therein, and the high-pressure liquid inlet, the ejection port, and the high-pressure injection port are respectively connected to the mixing chamber.

[0066] The high-pressure pump 33 draws water and pressurizes it before it enters the mixing chamber through the liquid inlet pipe 341 and the high-pressure liquid inlet. Based on the ejection principle of the ejector 311, a negative pressure area is formed near the ejection port, so that the abrasive in the abrasive container is sucked into the mixing chamber. The liquid abrasive mixture formed by the high-pressure water and abrasive in the mixer chamber enters the cutting nozzle 312 through the high-pressure ejection port and is finally ejected through the ejection port of the cutting nozzle 312.

[0067] Exemplarily, the liquid inlet pipe 341 and the abrasive pipe 342 are respectively configured as hoses, so as to adapt to the movement of the cutting head 31 relative to the cutting platform 1 .

[0068] Furthermore, the liquid cutting assembly 3 also includes a nozzle cover plate 35 fixedly mounted outside the cutting nozzle (312), the lower end of the cutting nozzle 312 passes through the nozzle cover plate 35, and the nozzle cover plate 35 is arranged horizontally. By providing the nozzle cover plate 35, the high-speed jet ejected by the cutting nozzle 312 can be blocked by the nozzle cover plate 35 after contacting the battery cell shell and reflecting, thereby greatly reducing the degree of splashing of the jet reflected and splashed into the surrounding environment.

[0069] Specifically, an anti-splashing groove is provided on the lower surface of the nozzle cover plate 35, and a through hole for penetrating the cutting nozzle 312 is provided on the bottom wall of the anti-splashing groove. This arrangement can further reduce the degree of jet splashing.

[0070] Exemplarily, the horizontal cross section of the anti-splash groove is rectangular, one of the two opposite inner walls of the anti-splash groove is distributed along the X direction, and the other two opposite inner walls are distributed along the Y direction, and the distance between any two opposite inner walls of the anti-splash groove gradually increases from top to bottom. In other embodiments, the cross section of the anti-splash groove can also be circular, and the diameter of the anti-splash groove gradually increases from top to bottom.

[0071] Exemplarily, the nozzle cover plate 35 is a rubber part. Since the rubber part can be deformed, the nozzle cover plate 35 only needs to be sleeved on the outside of the cutting nozzle 312 in the form of an interference fit, and there is no need to add a separate fixing structure. The nozzle cover plate 35 is simple to install and easy to disassemble.

[0072] Further, refer to Figure 1 , Figures 5 to 9As shown, the cutting drive assembly 4 includes an X-direction drive unit 41, a Y-direction drive unit 42 and a Z-direction drive unit 43. Among them, two X-direction drive units 41 are provided, and the X-direction drive unit 41 includes an X-direction mounting portion connected to the cutting platform 1, an X-direction sliding portion 412 that slides with the X-direction mounting portion along the X-direction, and an X-direction driving member that drives the X-direction sliding portion 412 to move along the X-direction. The two X-direction mounting portions are installed at both ends of the cutting platform 1 in the Y direction. The Y-direction drive unit 42 includes a Y-direction mounting portion, a Y-direction sliding portion 422 that slides with the Y-direction mounting portion along the Y direction, and a Y-direction driving member that drives the Y-direction sliding portion 422 to move along the Y direction. The Y-direction mounting portion is respectively connected to the two X-direction sliding portions 412 at both ends of the Y direction. The Z-direction driving unit 43 includes a Z-direction mounting portion, a Z-direction sliding portion 432 that slides with the Z-direction mounting portion along the Z-direction, and a Z-direction driving member that drives the Z-direction sliding portion 432 to move along the Z-direction; the Z-direction mounting portion is connected to the Y-direction sliding portion 422, and the Z-direction sliding portion 432 is connected to the cutting head 31.

[0073] By providing the X-direction drive unit 41, the Y-direction drive unit 42 and the Z-direction drive unit 43, the cutting head 31 can be provided with the freedom of movement in two horizontal directions and one vertical direction, ensuring that the cutting head 31 can move flexibly relative to the cutting platform 1. By providing the X-direction drive member, the Y-direction drive member and the Z-direction drive member, the automatic sliding of the X-direction sliding part 412, the Y-direction sliding part 422 and the Z-direction sliding part 432 can be realized, effectively improving the degree of automation and realizing automatic control of the movement of the cutting head 31.

[0074] In addition, two X-direction drive units 41 are arranged at intervals along the Y direction, and the two X-direction mounting parts are installed at both ends of the Y direction of the cutting platform 1. In this way, the two X-direction sliding parts 412 jointly support the Y-direction mounting part, and the Z-direction drive unit 43 and the cutting head 31 are arranged between the two X-direction drive units 41, which can further improve the reliability and stability of the overall structure.

[0075] In this embodiment, the cutting platform 1 includes a cutting support portion 11 for supporting the battery cell 6, and a cutting bracket 12 disposed below the cutting support portion 11. The X-direction mounting portion includes an X-direction slide rail 411 and a first bracket 413. The X-direction slide rail 411 extends along the X-direction and is disposed on the first bracket 413. The two first brackets 413 are respectively fixed to the two ends of the cutting bracket 12 in the Y-direction. The cutting support portion 11 is located between the two X-direction mounting portions along the Y-direction. The X-direction sliding portion 412 is slidably connected to the X-direction slide rail 411.

[0076] The Y-direction mounting portion includes a Y-direction slide rail 421 and a second support frame 423. The Y-direction slide rail 421 extends along the Y-direction and is disposed on the second support frame 423. The second support frame 423 is slidably connected to two X-direction slide portions 412 along the X-direction at both ends of the Y-direction. The Y-direction slide portion 422 is slidably connected to the Y-direction slide rail 421.

[0077] The Z-direction mounting portion includes a Z-direction slide rail 431 and a third support frame 433 . The Z-direction slide rail 431 extends along the Z-direction and is disposed on the third support frame 433 . The third support frame 433 is fixed on the Y-direction sliding portion 422 .

[0078] Optionally, the number of Y-direction sliding parts 422, Z-direction driving units 43 and cutting heads 31 is set in a one-to-one correspondence, and multiple Y-direction sliding parts 422 can slide on one Y-direction slide rail 421 at the same time. In this way, multiple cutting heads 31 can be arranged at one time, multiple battery cells 6 can be arranged on the cutting platform 1 at intervals along the Y direction, and multiple cutting heads 31 can cut multiple battery cell shells at the same time, effectively improving the cutting efficiency.

[0079] Exemplarily, the X-axis driving member includes an X-axis rodless cylinder, an external air source 416, an air delivery pipe 417, and a reversing valve 418. The X-axis rodless cylinder has two air delivery heads 414, which are connected to two working valve ports of the reversing valve 418 through the air delivery pipe 417. The air inlet of the reversing valve 418 is connected to the external air source 416, and the air outlet of the reversing valve 418 is connected to the outside atmosphere. The external air source 416 delivers driving air, and through the control of the reversing valve 418, the X-axis rodless cylinder is inlet through one air delivery head 414 and outlet through the other air delivery head 414, so that the X-axis rodless cylinder drives the X-axis sliding part 412 to slide in the X direction.

[0080] In addition to the above arrangement, the X-axis drive member can also be set as an electric push rod, a telescopic cylinder with a rod, and other components, which are not limited here. The Y-axis drive member is similar to the X-axis drive member and will not be described in detail here.

[0081] For example, refer to Figures 8 to 9 As shown, the Z-direction driving member includes a motor 434 and a screw 435. The housing of the motor 434 is fixed on the Z-direction slide rail 431, and the output shaft of the motor 434 is connected to the screw 435. The screw 435 passes through the Z-direction sliding part 432 and is threadedly connected with the Z-direction sliding part 432. The Z-direction sliding part 432 is limited to rotate circumferentially along the screw 435 by slidingly connecting the Z-direction sliding part 432 and the Z-direction slide rail 431, so that the above-mentioned Z-direction driving member forms a nut screw structure driven by the motor 434. The output shaft of the motor 434 rotates, driving the screw 435 to rotate, and the Z-direction sliding part 432 can be driven to slide along the Z-direction slide rail 431 under the screw connection between the screw 435 and the Z-direction slide rail 432.

[0082] The Z-direction driving member in this embodiment is not limited thereto, and the Z-direction driving member can also be configured as an electric push rod, a cylinder or other components, which are not further limited herein.

[0083] Furthermore, a first position detection component 441 is provided on the X-axis mounting portion, which is used to detect the position of the X-axis sliding portion 412 relative to the X-axis mounting portion; a second position detection component 442 is provided on the Y-axis mounting portion, which is used to detect the position of the Y-axis sliding portion 422 relative to the Y-axis mounting portion; and a third position detection component 443 is provided on the Z-axis mounting portion, which is used to detect the position of the Z-axis sliding portion 432 relative to the Z-axis mounting portion.

[0084] Specifically, the first position detection component 441, the second position detection component 442 and the third position detection component 443 cooperate to detect the position of the cutting head 31 relative to the cutting platform 1, and can quickly obtain the position of the cutting head 31, so as to facilitate the precise positioning of the cutting head 31 and ensure that the position movement of the cutting head 31 is accurate and reliable.

[0085] It should be noted that the first position detection member 441 , the second position detection member 442 and the third position detection member 443 all adopt position sensors in the prior art, which are not specifically limited here.

[0086] Further, refer to Figure 7 and Fig. 9 As shown, the Z-direction sliding portion 432 is connected to a mounting bracket 45, and the cutting head 31 is detachably mounted on the mounting bracket 45. By providing the mounting bracket 45, sufficient installation space can be provided for the cutting head 31. Moreover, the cutting head 31 can be detached from the mounting bracket 45 for easy replacement.

[0087] In this embodiment, the mounting bracket 45 is provided with a through hole 451 extending through the Z direction, and the lower end of the cutting head 31 passes through the through hole 451; the cutting head 31 is provided with a limiting protrusion 313, and the cutting head 31 is threadedly connected with a locking nut, and the mounting bracket 45 is clamped between the locking nut 36 and the limiting protrusion 313. When the cutting head 31 is inserted into the through hole 451, the limiting protrusion 313 can abut against the upper opening end surface of the through hole 451, and then the locking nut 36 is screwed into the external thread of the cutting head 31 from bottom to top. Under the bidirectional pressing action of the locking nut 36 and the limiting protrusion 313, the cutting head 31 can be reliably fixed.

[0088] Furthermore, the inner diameter of the through hole 451 is larger than the outer diameter of the cutting head 31 placed in the through hole 451, and the outer wall of the mounting bracket 45 is provided with a through hole 452 that is arranged to penetrate along the Z direction, and the radial side of the through hole 452 extends to the inner peripheral wall of the through hole 451. The two opposite inner walls of the through hole 452 are respectively provided with a mounting through hole 453 and a locking hole, and the first fastener passes through the mounting through hole 453 and is threadedly connected to the locking hole to fix the cutting head 31 to the mounting bracket 45.

[0089] A first fastener such as a screw or a bolt passes through the mounting through hole 453 and is screwed into the locking hole. During this process, the two opposite inner walls of the through hole 452 are gradually brought closer together, driving the inner wall of the through hole 451 to be further pressed against the cutting head 31, thereby further achieving reliable fixation of the cutting head 31.

[0090] Further, the output end of the cutting drive assembly 4 is connected to the mounting bracket 45 through the connecting arm 46, wherein the Z-direction sliding portion 432 is the output end of the cutting drive assembly 4. The mounting bracket 45 and the connecting arm 46 are connected through two second fasteners, and the mounting bracket 45 and the connecting arm 46 are positioned through two positioning pins. It should be noted that the connecting arm 46 is positioned and connected to the Z-direction sliding portion 432 through components such as positioning pins and bolts.

[0091] Specifically, the mounting bracket 45 is provided with two first connection holes 454 and two first pin holes 455, and the connecting arm 46 is correspondingly provided with two second connection holes and two second pin holes. The positioning pin passes through the first pin hole 455 and the second pin hole to achieve the positioning of the mounting bracket 45 and the connecting arm 46. The second fastener passes through the first connection hole 454 and is threadedly connected to the second connection hole to achieve the fixed connection between the mounting bracket 45 and the connecting arm 46.

[0092] Exemplarily, the two first connection holes 454 and the two first pin holes 455 are distributed in a rectangular shape, the two first connection holes 454 are distributed at one diagonal corner of the rectangle, and the two first pin holes 455 are distributed at the other diagonal corner of the rectangle.

[0093] Exemplarily, the two second connection holes and the two second pin holes are distributed in a rectangular shape, the two second connection holes are distributed at one diagonal corner of the rectangle, and the two second pin holes are distributed at the other diagonal corner of the rectangle.

[0094] Further, refer to Figure 1 , Fig.10As shown, the cutting support part 11 is a hollow structure, and the cutting platform 1 further includes a circulation pool 5 disposed below the cutting support part 11, and the circulation pool 5 is used to receive the liquid abrasive mixture falling through the through holes 111 on the cutting support part 11. Specifically, the cutting support part 11 is provided with a plurality of through holes 111 in a matrix shape, and the liquid abrasive mixture sprayed by the cutting nozzle 312 falls and passes through the through holes 111 into the circulation pool 5, so that the sprayed liquid abrasive mixture is reliably and effectively collected.

[0095] Furthermore, the battery core cutting device further comprises a filter assembly (not shown), which is used to filter the abrasive in the liquid abrasive mixture in the circulation pool 5 , and the liquid supply unit is used to deliver the liquid filtered by the filter assembly into the cutting head 31 .

[0096] Specifically, a drain port (not shown) is provided at the bottom of the circulation pool 5, and the drain port is connected to the inlet of the high-pressure pump 33 through a circulation pipe. When the switch valve is opened, the high-pressure pump 33 sends the liquid filtered by the filter assembly to the liquid inlet pipe 341 through the drain port, and finally circulates into the mixing chamber. In this way, the recycling of the liquid can be achieved, effectively reducing costs.

[0097] It should be noted that the filter component can be set in the circulation pool 5, or the filter component can be set between the drain port and the inlet of the high-pressure pump 33; since the lubricating oil of components such as the motor 434 may flow into the circulation pool 5, it is necessary to remove the oil regularly, and an existing oil removal component can be optionally set in the circulation pool 5, which will not be introduced in detail here.

[0098] Exemplarily, the use process of the battery cell cutting device provided in this embodiment is described below:

[0099] First, place the battery cell 6 to be cut on the cutting platform 1, the X-direction stopper 21 abuts against the battery cell shell along the X-direction, the Y-direction stopper 22 abuts against the battery cell shell along the Y-direction, and the Z-direction stopper presses the battery cell 6 in the vertical direction by its own gravity to fix the battery cell 6.

[0100] Subsequently, the external liquid source is connected to the high-pressure liquid inlet through the liquid inlet pipe 341, and the high-pressure pump 33 works to pressurize the liquid of the external liquid source and transport it to the mixing chamber. The external abrasive source enters the mixing chamber through the abrasive pipe 342 and the injection port to mix with the high-pressure liquid to form a liquid abrasive mixture. The liquid abrasive mixture enters the cutting nozzle 312 through the high-pressure injection port, and is finally ejected from the cutting nozzle 312 to form a stable jet.

[0101] At the same time, the position of the cutting head 31 is adjusted along the X, Y and Z directions by the cutting drive assembly 4, so that the jet port of the cutting nozzle 312 sprays the liquid abrasive mixture toward the target cutting position to quickly and accurately cut the battery cell casing.

[0102] After the cutting operation is completed, the operator turns the cut battery cell 6 upside down, and the internal winding core can be smoothly removed, thereby achieving reliable separation of the internal winding core.

[0103] In summary, the battery cell cutting device provided in this embodiment uses a high-pressure jet as a medium to cut the upper battery cell shell of the battery cell monomer 6, thereby avoiding the situation where the cutting seam is offset due to thermal deformation of the cutting knife, and ensuring that the cutting position is accurate and does not damage the current collector, diaphragm and other parts of the internal winding core. In addition, the above process can also effectively suppress the generation of chips, dust, sparks and smoke, and the safety of the entire working environment is guaranteed, ensuring the safety and health of the workers on site. In addition, since the cutting process does not produce a heat-affected zone, the physical and chemical properties of the cutting position do not change. And since no cutting knife is used, the cost of cutting knife wear and replacement is also avoided.

[0104] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A cell cutting device for cutting a cell shell of a cell monomer (6), characterized in that: The battery core cutting device comprises: A cutting platform (1), the cutting platform (1) being used for placing the battery cell monomer (6); A positioning component (2) is used to position the battery cell casing along the X direction, the Y direction and the Z direction, and to expose the target cutting position on the battery cell casing; A liquid cutting assembly (3) is located above the cutting platform (1), the liquid cutting assembly (3) comprising a cutting head (31), a liquid supply unit and an abrasive supply unit (32), the liquid outlet end of the liquid supply unit and the material outlet end of the abrasive supply unit (32) both being connected to the material inlet of the cutting head (31); The cutting drive assembly (4) is used to drive the cutting head (31) to move along the X direction, the Y direction and the Z direction, so that the cutting head (31) sprays the liquid abrasive mixture toward the target cutting position to cut the battery cell casing, wherein the X direction, the Y direction and the Z direction are perpendicular to each other, and the Z direction is a vertical direction.

2. The battery core cutting device according to claim 1, characterized in that: The positioning component (2) comprises: An X-direction stopper (21), the X-direction stopper (21) being connected to the cutting platform (1), and the X-direction stopper (21) being capable of abutting against the battery cell housing along the X-direction; A Y-direction stopper (22), the Y-direction stopper (22) being connected to the cutting platform, and the Y-direction stopper (22) being capable of abutting against the battery cell housing along the Y direction; A Z-direction stopper can abut against the upper surface of the battery cell housing along the Z direction.

3. The battery core cutting device according to claim 1, characterized in that: The liquid supply unit comprises a high-pressure pump (33), the inlet of the high-pressure pump (33) is used to connect to a liquid source; the abrasive supply unit (32) comprises an abrasive container, and the cutting head (31) comprises: An ejector (311), the ejector (311) having a high-pressure liquid inlet and an ejection port, the outlet of the high-pressure pump (33) being connected to the high-pressure liquid inlet via a liquid inlet pipe (341), and the abrasive container being connected to the ejection port via an abrasive pipe (342); A cutting nozzle (312), a high-pressure injection port is provided at the bottom of the ejector (311), and a top feed port of the cutting nozzle (312) is connected to the high-pressure injection port.

4. The battery core cutting device according to claim 3, characterized in that: The liquid cutting assembly (3) further comprises a nozzle cover plate (35) fixedly sleeved on the outside of the cutting nozzle (312), the lower end of the cutting nozzle (312) passes through the nozzle cover plate (35), and the nozzle cover plate (35) is arranged horizontally.

5. The battery core cutting device according to claim 1, characterized in that: The cutting drive assembly (4) comprises: Two X-direction drive units (41), the X-direction drive units (41) comprising an X-direction mounting portion connected to the cutting platform (1), an X-direction sliding portion (412) slidingly matched with the X-direction mounting portion along the X-direction, and an X-direction driving member driving the X-direction sliding portion (412) to move along the X-direction; the two X-direction mounting portions are mounted at both ends of the cutting platform (1) in the Y-direction; The Y-direction driving unit (42) comprises a Y-direction mounting portion, a Y-direction sliding portion (422) slidingly matched with the Y-direction mounting portion along the Y-direction, and a Y-direction driving member driving the Y-direction sliding portion (422) to move along the Y-direction; the Y-direction mounting portion is respectively connected to the two X-direction sliding portions (412) at both ends of the Y-direction; The Z-direction driving unit (43) comprises a Z-direction mounting portion connected to the Y-direction sliding portion (422), a Z-direction sliding portion (432) slidingly matched with the Z-direction mounting portion along the Z-direction, and a Z-direction driving member driving the Z-direction sliding portion (432) to move along the Z-direction; the Z-direction sliding portion (432) is connected to the cutting head (31).

6. The battery core cutting device according to claim 5, characterized in that: The X-direction mounting portion is provided with a first position detection member (441) for detecting the position of the X-direction sliding portion (412) relative to the X-direction mounting portion; And / or, a second position detection member (442) is provided on the Y-direction mounting portion, for detecting the position of the Y-direction sliding portion (422) relative to the Y-direction mounting portion; And / or, a third position detection component (443) is provided on the Z-direction mounting portion for detecting the position of the Z-direction sliding portion (432) relative to the Z-direction mounting portion.

7. The battery core cutting device according to claim 1, characterized in that: The output end of the cutting drive assembly (4) is connected to a mounting bracket (45), the mounting bracket (45) is provided with a through hole (451) extending through the Z direction, and the lower end of the cutting head (31) passes through the through hole (451); The cutting head (31) is provided with a limiting convex portion (313), the cutting head (31) is threadedly connected with a locking nut (36), and the mounting bracket (45) is clamped between the locking nut (36) and the limiting convex portion (313) along the Z direction.

8. The battery core cutting device according to claim 7, characterized in that: The inner diameter of the penetration hole (451) is larger than the outer diameter of the cutting head (31) placed in the penetration hole (451); the outer wall of the mounting bracket (45) is provided with a through hole (452) penetrating along the Z direction; and a radial side of the through hole (452) extends to the inner peripheral wall of the penetration hole (451); The two opposite inner walls of the through hole (452) are respectively provided with a mounting through hole (453) and a locking hole. The cutting head (31) is fixed to the mounting bracket (45) by a first fastener passing through the mounting through hole (453) and then being threadedly connected to the locking hole.

9. The battery core cutting device according to any one of claims 1 to 8, characterized in that: The cutting platform (1) comprises a hollowed-out cutting support portion (11), and a circulation pool (5) arranged below the cutting support portion (11), wherein the circulation pool (5) is used to receive the liquid abrasive mixture that falls through the holes on the cutting support portion (11); The battery core cutting device further comprises a filter assembly for filtering abrasives in the liquid abrasive mixture in the circulation pool (5), and the liquid supply unit is used to deliver the liquid filtered by the filter assembly into the cutting head (31).

10. A battery recycling device, characterized in that: A battery core cutting device comprising the battery core cutting device according to any one of claims 1 to 9.

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