A cutter for quickly cutting and separating a power battery bottom plate

Abstract

The technical scheme of the present application provides a kind of cutter for quickly cutting and separating power battery bottom plate, including tool holder and cutting edge, the top of the tool holder is inclined surface, the bottom of the tool holder is arc surface, the inclined surface and the arc surface are respectively towards the metal plate and the cell of power battery when cutting, for guiding and separating the cell and the metal plate of power battery in cutting;The cutting edge is detachably arranged on one side of the tool holder, and the side position corresponds to the bottom end of the inclined surface, and the cutting edge is towards horizontal, when cutting, the tool holder and the cutting edge are horizontal movement of horizontal direction traction.The beneficial effects of the present application are that the tool holder and the cutting edge move horizontally, the adhesive between the cutting edge and the metal plate is cut, and the inclined surface at the top of the tool holder is matched, to realize the complete separation of the cell and the metal plate, and effectively avoid the cell deformation bulging problem caused in the tearing separation process.

Description

Technical Field

[0001] This invention relates to the field of retired power battery recycling technology, and in particular to a cutting tool for quickly cutting and separating the bottom plate of a power battery. Background Technology

[0002] Against the backdrop of carbon neutrality, the production and sales of new energy vehicles have grown rapidly, and the demand and production of power batteries, as the core power source of new energy vehicles, have experienced explosive growth. Based on industry standards for new energy vehicles, power batteries must be retired when their actual capacity drops to around 80%. At this point, most battery packs still meet the usage standards in low-speed vehicles, energy storage, and other industries. To improve the effective utilization rate of power battery products, increase the production capacity of the battery manufacturing industry, and reduce carbon emissions during battery manufacturing, the non-destructive dismantling and secondary utilization of retired power batteries in the form of cells is an effective solution.

[0003] Traditional power batteries are fixed using mechanical structures and can be disassembled quickly and on a large scale using automated production lines. However, to meet the energy density requirements of the automotive industry, CTP battery packs, which use structural adhesive to fix the cells, are gradually becoming the mainstream. The tight cell arrangement and large amount of structural adhesive make it difficult for existing process equipment to perform efficient and non-destructive disassembly. Taking SAIC Times' "Magic Cube" battery pack as an example, in order to effectively improve the safety of vehicle use, the battery pack has a sandwich structure of metal plates, cells, and metal plates.

[0004] Forcibly pulling apart the upper metal protective plate and the lower metal base plate during disassembly can cause the battery cells to bulge, affecting their reuse value and potentially posing uncontrollable dangers. Therefore, a separation tool is needed to effectively separate the battery cells from the metal plates, preventing bulging of the cells during the pulling process. Summary of the Invention

[0005] In view of this, it is necessary to provide a tool for quickly cutting and separating the bottom plate of a power battery, so as to solve the technical problem that the upper metal protective plate and the lower metal bottom plate will cause the battery cell to bulge when mechanically pulled apart during disassembly in the prior art.

[0006] To achieve the above technical objectives, the present invention provides a tool for rapidly cutting and separating the bottom plate of a power battery, comprising:

[0007] A cutting tool holder, wherein the top of the cutting tool holder is sloping and the bottom of the cutting tool holder is arc-shaped, the sloping surface and the arc-shaped surface facing towards the metal plate and the battery cell respectively during cutting, for guiding and separating the battery cell and the metal plate during cutting; and

[0008] The blade is detachably mounted on one side of the blade holder, and the position of this side corresponds to the bottom end of the slope. The cutting edge of the blade faces horizontally. During cutting, the blade holder and the blade move horizontally in a pulling direction.

[0009] Furthermore, the vertical height difference of the slope is 3cm, and the blade is 2mm higher than the bottom of the blade holder.

[0010] Furthermore, it also includes lugs, a pair of which are respectively connected to both sides of the blade holder to limit the position of the metal plate.

[0011] Furthermore, the ear loop is in the shape of an inverted L.

[0012] Furthermore, it also includes a tool holder, with the tool holder being detachably connected to the tool holder.

[0013] Furthermore, the tool holder includes a fixing part, an extension frame, and a connecting part. The extension frame is fixed on both sides of the fixing part, and the connecting part is disposed at the bottom of the extension frame. The fixing part is used to connect to the tool traction device, and the connecting part is used to connect to the tool holder.

[0014] Furthermore, the tool holder has a slot, and an insert plate extends from the blade. The insert plate is inserted into the slot. The tool holder has a positioning hole for installing a positioning bolt that tightens the insert plate downwards.

[0015] Furthermore, the lug is welded and fixed to the tool holder.

[0016] Furthermore, an adjustment component is provided between the two opposite sides of the lugs. The adjustment component is disposed on the tool holder and is used to adjust the distance by which the lugs slide on the tool holder.

[0017] Furthermore, the adjustment assembly includes a bidirectional screw, a telescopic member, and a connecting rod. The tail end of the tool holder is provided with a slot. The telescopic member is disposed at both ends of the bidirectional screw. The bidirectional screw is engaged in the slot through the telescopic member. One end of the connecting rod is fixedly connected to the corresponding lug. The other ends of the two connecting rods are respectively threaded to two sections of threads on the bidirectional screw.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. By using a horizontally moving blade holder and blade, the blade cuts the adhesive between the battery cell and the metal plate. Combined with the slope at the top of the blade holder, the battery cell is completely separated from the metal plate, effectively avoiding the problem of battery cell deformation and bulging caused during the tearing and separation process.

[0020] 2. The bottom of the tool holder is a smooth arc surface, and there is always a certain distance between the bottom of the tool and the battery cell. The arc-shaped bottom surface effectively avoids damage to the battery cell.

[0021] 3. The cutting head has a detachable structure, allowing for quick replacement of the cutting head and improving work efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the tool for rapidly cutting and separating the power battery base plate according to an embodiment of the present invention;

[0023] Figure 2 This is a front view of the tool holder and the cutting edge according to an embodiment of the present invention;

[0024] Figure 3 This is a three-dimensional rear angle view of the tool for rapidly cutting and separating the power battery base plate according to an embodiment of the present invention;

[0025] Figure 4 This is a three-dimensional exploded view of the tool for rapidly cutting and separating the power battery base plate according to an embodiment of the present invention.

[0026] In the diagram: 1. Tool holder; 101. Slope; 102. Arc surface; 103. Slot; 104. Positioning hole; 105. Slot; 106. Guide groove;

[0027] 2. Blade; 201. Insert plate;

[0028] 3. Ear loops;

[0029] 4. Tool holder; 41. Fixing part; 42. Extension frame; 43. Connecting part;

[0030] 5. Adjustment assembly; 51. Bidirectional screw; 52. Telescopic component; 53. Connecting rod; 521. Square cylinder; 522. Spring; 523. Limiting rod; 531. Sliding part; 532. Welding part. Detailed Implementation

[0031] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0032] like Figure 1-2As shown, this invention provides a tool for rapidly cutting and separating the bottom plate of a power battery, including a tool holder 1 and a cutting edge 2. The top of the tool holder 1 is a slope 101, which slopes downward from the tail end to the head end of the tool holder 1. The cutting edge 2 is located at the head end of the tool holder 1, i.e., the bottom end of the slope 101. Specifically, the slope 101 is used to quickly separate the battery cell and metal plate when cutting the power battery. The bottom of the tool holder 1 is an arc surface 102. During cutting, the slope 101 and the arc surface 102 face the metal plate and battery cell of the power battery, respectively, to guide the separation of the battery cell and metal plate during cutting. The arc surface 102 works in conjunction with the slope 101 during cutting. The battery cell is guided to separate from the metal plate, and a certain distance is always maintained between the bottom of the cutter and the battery cell to prevent the sharp edge of the blade 2 from contacting the battery cell, effectively avoiding damage to the battery cell. The blade 2 is detachably mounted on one side of the cutter holder 1. When the blade 2 needs to be replaced, the cutter head can be quickly replaced according to the usage situation, avoiding the blade head rolling during the cutting process, which would affect the separation efficiency and make it easy to maintain the sharpness of the blade 2, so that the cutting is performed with a relatively sharp blade 2. The side position corresponds to the bottom end of the slope 101, and the cutting edge of the blade 2 faces horizontally. During cutting, the cutter holder 1 and the blade 2 move horizontally in a horizontal traction direction. During use, the cutter moves horizontally under the horizontal traction force, avoiding the vertical pulling force on the battery cell and effectively preventing the battery cell from bulging.

[0033] Understandably, during the cutting process, blade 2 uses a sharp cutting edge to directly cut the adhesive and separate the battery cell from the metal plate, including the lower metal base plate, the upper metal protective plate, and a series of other metal plates connected to the battery cell by adhesive.

[0034] Furthermore, in order to achieve complete separation of the battery cell from the metal plate, the vertical height difference of the slope 101 is 3cm. During the cutting process, the metal plate is separated along the slope of the slope 101.

[0035] Furthermore, to prevent the blade 2 from scratching the battery cell during the cutting process, the blade 2 is 2mm higher than the bottom of the blade holder, that is, the height difference between the lowest point of the arc surface 102 and the blade 2 is 2mm, forming a smooth boat-shaped base, which prevents the blade 2 from contacting the battery cell, effectively preventing the blade 2 from scratching the battery cell and improving the safety and stability of the cutting.

[0036] In one embodiment, in order to prevent the metal plate from flying off during the cutting process, the tool also includes a lug 3. A pair of lugs 3 are respectively connected to the left and right sides of the tool holder 1 to limit the position of the metal plate. During the separation process, the lugs can lock the metal plate within a certain range, keep the position of the metal plate unchanged, and prevent it from flying off after the cutting is completed. It mainly limits the position of the metal plate on both sides and the top, and limits its position to prevent it from flying off.

[0037] Specifically, the shape of the hanging ear 3 is an inverted L-shape. The two L-shaped hanging ears 3 and the slope 101 on the cutter holder 1 form a region that frames the metal plate, so that it slides along the region that frames the metal plate during cutting without flying off.

[0038] In one embodiment, to facilitate the connection between the cutting tool and the traction device, the cutting tool also includes a tool holder 4. The tool holder 1 and the tool holder 4 are detachably connected, and the traction device for cutting is connected through the tool holder 4.

[0039] Understandably, traction equipment can be devices such as pneumatic push rods or hydraulic push rods that can drive the cutting tools to perform horizontal traction.

[0040] Specifically, the tool holder 4 includes a fixing part 41, an extension frame 42, and a connecting part 43. The extension frame 42 is fixed on both sides of the fixing part 41, and the connecting part 43 is disposed at the bottom of the extension frame 42. The extension frame 42 provides an effective gap between the fixing part 41 and the connecting part 43 to avoid interference between the parts connected to the fixing part 41 and the parts connected to the connecting part 43. The fixing part 41 is used to connect the tool traction device, and the connecting part 43 is used to connect with the tool holder 1. The fixing part 41 is a flat plate with several mounting holes, while the connecting part 43 is a plate that conforms to the contour of the tool holder 1 and has several mounting holes for connection and fastening with mounting bolts.

[0041] Understandably, the size and structure of the tool holder 4 can be changed according to the needs of different cutting conditions to adapt to different tool holders 1 and tool traction devices.

[0042] In one embodiment, in order to facilitate the disassembly and assembly of the blade 2, the blade holder 1 is provided with a slot 103, and the blade 2 extends with an insert plate 201. The insert plate 201 is inserted into the slot 103. The blade holder 1 is provided with a positioning hole 104, which is used to install a positioning bolt that tightens the insert plate 201 downwards.

[0043] Furthermore, in order to improve the installation stability of the blade 2, a hole is provided on the blade 2 corresponding to the positioning hole 104, and the positioning bolt is inserted into the hole to form a further limiting and fastening structure.

[0044] In one embodiment, the lug 3 is welded and fixed to the cutter holder 1, and adjusted according to the specifications of the metal plate to be cut to match the size of the metal plate.

[0045] Understandably, the welded lug 3 provides a more stable connection, but its adjustability is weak. When the specifications of the metal plate change, it is necessary to cut and disassemble it accordingly, or to make a new set of tools.

[0046] In another embodiment, see Figure 3-4 To facilitate the adjustment of the position of the lug 3, unlike the welding installation of the lug 3, an adjustment component 5 is provided between the two lugs 3 on opposite sides. The adjustment component 5 is provided on the tool holder 1 and is used to drive the lug 3 to slide on the tool holder 1 to adjust the spacing. Thus, when the length of the tool meets the cutting requirements, the spacing of the lug 3 can be adaptively adjusted for the metal plate specifications within the length range.

[0047] Understandably, as the width of the metal plate increases or decreases, you can adjust the spacing between the hanging ears 3 so that the hanging ears 3 are close to both sides of the metal plate.

[0048] Specifically, the adjustment assembly 5 includes a bidirectional screw 51, a telescopic member 52, and a connecting rod 53. The tail end of the tool holder 1 is provided with a slot 105, which has an open slot and two recessed locking parts. The telescopic member 52 is disposed at both ends of the bidirectional screw 51. By compressing the telescopic member 52, it is embedded into the slot along with the bidirectional screw 51. Then, by extending and retracting the telescopic member 52, it is locked into the locking part, thereby forming a snap-fit ​​installation. That is, the bidirectional screw 51 is locked into the slot 105 by the telescopic member 52. One end of the connecting rod 53 is fixedly connected to the corresponding lug 3, and the other ends of the two connecting rods 53 are respectively threaded to the two sections of threads on the bidirectional screw 51. When the bidirectional screw 51 is rotated, the two connecting rods 53 can be adjusted to move relative to each other or move away from each other, thereby controlling the two lugs 3 to adjust the spacing.

[0049] Understandably, the bidirectional screw 51 is a screw with two threads in opposite directions on its surface.

[0050] Furthermore, the connecting rod 53 includes a sliding part 531 and a welding part 532. The sliding part 531 is threadedly connected to the bidirectional screw 51, while the welding part 532 is a rod extending from the sliding part 531, which is welded to the lug 3.

[0051] Furthermore, the telescopic component 52 includes a square tube 521, a spring 522, and a limiting rod 523. The limiting rod 523 is fixed to the outside of the square tube 521. The square tube 521 is fitted onto the end of the bidirectional screw 51. The spring 522 is built into the square tube 521, with its two ends abutting against the inner wall of the square tube 521 and the end of the bidirectional screw 51, respectively. The bidirectional screw 51 is rotatably connected inside the square tube 521. This structure facilitates assembly and the formation of a rotating structure for the bidirectional screw 51.

[0052] Understandably, the shape of the mounting part is square to match the square tube 521, thereby preventing the square tube from rotating within the mounting part; it is also understandable that, in order to form a sliding guide for the welding part 532, the limiting rod 523 and the guide groove 106 opened on the tool holder 1 form a guide channel to limit and guide the welding part 532; and the limiting rod 523 can also be used as a pull rod to pull the square tube 521 to compress the spring 522.

[0053] The specific working process of this invention is as follows: The bottom of the cutter holder 1 is an arc surface 102, which is a smooth arc structure. During use, the cutter moves horizontally under the traction force in the horizontal direction. The blade 2 directly cuts the adhesive between the metal plate and the battery cell. Under the guidance of the slope 101 on the cutter holder 1, the metal plate and the battery cell are separated, avoiding the vertical tension on the battery cell and effectively preventing the battery cell from bulging. The blade 2 is about 2mm higher than the bottom of the cutter holder 1. During the cutting process, the smooth boat-shaped base prevents the blade 2 from contacting the battery cell, which can effectively prevent the blade 2 from scratching the battery cell. In addition, during the cutting process, the two hanging ears 3 lock the metal plate within a certain range, keeping the position of the metal plate unchanged and preventing it from flying out after the cutting is completed. The entire cutting process is efficient, of high quality and safe.

[0054] The entire workflow is now complete, and anything not described in detail in this specification is existing technology known to those skilled in the art.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A cutting tool for rapidly cutting and separating the bottom plate of a power battery, characterized in that, include: The cutter holder has a sloping top and an arc-shaped bottom. During cutting, the sloping top and the arc-shaped bottom face the metal plate and the battery cell, respectively, to guide and separate the battery cell and the metal plate during cutting. and The blade is detachably mounted on one side of the blade holder, and the position of this side corresponds to the bottom end of the slope. The cutting edge of the blade faces horizontally. During cutting, the blade holder and the blade move horizontally in a pulling direction. The vertical difference between the slope and the bottom is 3cm, and the blade is 2mm higher than the bottom of the blade holder, so that the bottom arc surface of the blade holder forms a smooth boat-shaped base that prevents the blade from contacting the battery cell during the cutting process.

2. The cutting tool for rapidly cutting and separating the power battery base plate according to claim 1, characterized in that, It also includes lugs, a pair of which are respectively connected to both sides of the blade holder to limit the position of the metal plate.

3. The cutting tool for rapidly cutting and separating the bottom plate of a power battery according to claim 2, characterized in that, The ear loop is in the shape of an inverted L.

4. The cutting tool for rapidly cutting and separating the power battery base plate according to claim 3, characterized in that, It also includes a tool holder, and the tool holder is detachably connected to the tool holder.

5. The cutting tool for rapidly cutting and separating the power battery base plate according to claim 4, characterized in that, The tool holder includes a fixing part, an extension frame, and a connecting part. The extension frame is fixed on both sides of the fixing part, and the connecting part is disposed at the bottom of the extension frame. The fixing part is used to connect to the tool traction device, and the connecting part is used to connect to the tool holder.

6. The cutting tool for rapidly cutting and separating the bottom plate of a power battery according to claim 5, characterized in that, The tool holder has a slot, and an insert plate extends from the blade. The insert plate is inserted into the slot. The tool holder has a positioning hole for installing a positioning bolt that tightens the insert plate downwards.

7. The cutting tool for rapidly cutting and separating the bottom plate of a power battery according to claim 6, characterized in that, The lugs are welded and fixed to the tool holder.

8. The cutting tool for rapidly cutting and separating the bottom plate of a power battery according to claim 6, characterized in that, An adjustment component is provided between the two hooks on opposite sides. The adjustment component is disposed on the tool holder and is used to adjust the distance by which the hooks slide on the tool holder.

9. The cutting tool for rapidly cutting and separating the bottom plate of a power battery according to claim 8, characterized in that, The adjustment assembly includes a bidirectional screw, a telescopic component, and connecting rods. The tail end of the tool holder has a slot. The telescopic component is located at both ends of the bidirectional screw. The bidirectional screw is engaged in the slot through the telescopic component. One end of the connecting rod is fixedly connected to the corresponding lug. The other ends of the two connecting rods are respectively threaded to two sections of threads on the bidirectional screw.

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