Battery pole piece slitting mechanism

Abstract

The utility model discloses a battery pole piece slitting mechanism, and belongs to the technical field of lithium batteries, the battery pole piece slitting mechanism comprises a knife rest, a slitting knife, a cooling core and a collecting tank; the slitting knife is mounted in the knife rest, and the cooling core is arranged on the knife rest corresponding to the slitting knife; the collecting tank is arranged between the cooling core and the slitting knife; a collecting groove is formed in the base, a containing cavity is formed in the collecting groove and corresponds to the cooling core, a gap matched with the slitting knife is formed in the bottom of the collecting groove, and the outer edge of the slitting knife is located in the gap and makes contact with the cooling core; the height of the lowest point of the bottom of the collecting tank is lower than the height of the gap; the battery pole piece slitting mechanism is simple in structure, redundant alcohol can be collected by arranging the collecting groove, it is avoided that the alcohol drips onto the pole piece to affect the performance of the pole piece, meanwhile, waste of the alcohol can be reduced, and the battery pole piece slitting mechanism is more economical and more environmentally friendly.

Description

Technical Field

[0001] The present application relates to the technical field of lithium batteries, and in particular to a battery pole sheet cutting mechanism. Background Art

[0002] With the development of the lithium battery industry, lithium battery safety issues have always been the focus of everyone's attention. The biggest cause of lithium battery safety issues is the burrs in the cutting of the pole pieces. The burrs in the cutting of the pole pieces, especially the metal burrs, are extremely harmful to lithium batteries. Large metal burrs will pierce the diaphragm during winding, causing a short circuit between the positive and negative electrodes, causing the battery to heat up and explode, thus endangering the personal safety of the user.

[0003] To solve the problem of burrs on the electrode pieces of lithium batteries, alcohol cooling is usually used. The wool felt is moistened by dripping alcohol on it online. After the moistened wool felt comes into contact with the upper slitting knife, it can cool down the upper slitting knife, thus preventing the upper slitting knife from becoming blunt due to excessive temperature and causing burrs on the electrode pieces.

[0004] At present, the online alcohol dripping is controlled by a peristaltic pump. There is a problem of too much alcohol on the wool felt. The excess alcohol drips onto the electrode, affecting the working performance of the electrode. Utility Model Content

[0005] The present application provides a battery pole piece cutting mechanism, aiming to solve the problem in the prior art that excess alcohol on the wool felt drips onto the pole piece and affects the performance of the pole piece.

[0006] The first aspect of the present application provides a battery electrode cutting mechanism, comprising:

[0007] A tool holder, a slitting knife, a cooling core and a collecting tank; the slitting knife is installed in the tool holder, and the cooling core is arranged on the tool holder corresponding to the slitting knife; the collecting tank is arranged between the cooling core and the slitting knife; a receiving cavity is formed inside the collecting tank, and the receiving cavity is arranged corresponding to the cooling core; a gap adapted to the slitting knife is opened at the bottom of the collecting tank, and the outer edge of the slitting knife is located in the gap and contacts with the cooling core; the lowest point of the bottom of the collecting tank is at a height lower than the height of the gap.

[0008] Through the above technical solution, a collecting groove is set between the cooling core and the slitting knife, and a gap is set at the bottom of the collecting groove, so that the edge of the slitting knife can contact the cooling core through the gap to achieve cooling. The height of the lowest point at the bottom of the collecting groove is lower than the height of the gap, so that the excess alcohol on the cooling core can be collected and stored in the collecting groove, preventing the alcohol from flowing out directly from the gap and dripping onto the battery electrode.

[0009] Optionally, the collecting tank includes an integrally formed bottom plate and side plates, and the height of the bottom plate gradually decreases from the center to the edge.

[0010] Through the above technical solution, the height of the bottom plate gradually decreases from the center to the edge, which can guide the alcohol. When there is excess alcohol on the cooling core and enters the collection tank, the alcohol falls on the bottom plate and flows from the area near the middle to the edge.

[0011] Optionally, the bottom plate includes two inclined portions, and the two inclined portions are inclined toward the inner center of the collecting tank at the same time.

[0012] Optionally, the cross-sectional shape of the bottom plate is set to be an arc, and the concave surface of the arc-shaped bottom plate faces the slitting knife.

[0013] Furthermore, the width of the slit is greater than the thickness of the slitting knife.

[0014] Through the above technical solution, the width of the gap is greater than the thickness of the slitting knife, ensuring that the outer edge of the slitting knife can extend into the gap and contact the cooling core, thereby ensuring the wetting and cooling effect of the slitting knife, while avoiding interference between the slitting knife and the bottom of the collection tank during operation.

[0015] Furthermore, the cooling core includes wool felt, and a mounting seat is fixed on the tool holder; the mounting seat has at least one open end, and at least one of the open ends is arranged toward the collecting tank. The wool felt is installed inside the mounting seat, and the interior of the mounting seat is communicated with the interior of the collecting tank.

[0016] Through the above technical solution, the wool felt can be placed in the mounting seat through the open end, and the interior of the mounting seat is communicated with the interior of the collecting tank so that the collecting tank receives excess alcohol on the wool felt.

[0017] Furthermore, the outer circumference of the wool felt is larger than the inner circumference of the mounting seat.

[0018] Through the above technical solution, the outer circumference of the wool felt is larger than the inner circumference of the mounting seat, so that the wool felt can be completely filled in the interior of the mounting seat by squeezing when placed, so as to prevent the wool felt from falling off the mounting seat during installation, thereby improving the stability of the installation.

[0019] Optionally, the collecting tank is detachably connected to the mounting seat.

[0020] Optionally, the collecting tank comprises a transparent material.

[0021] Through the above technical solution, the collection tank is made of transparent material, which is convenient for the staff to directly observe the collection of alcohol, so that the collection tank can be removed in time before the alcohol is full, and the alcohol can be transferred to another container for unified recovery, avoiding overflow of alcohol after the collection tank is full.

[0022] Furthermore, the battery pole piece cutting mechanism also includes a peristaltic pump, the peristaltic pump is connected to the cooling core through a pipeline, and the peristaltic pump is used to transport coolant to the cooling core, and the coolant includes alcohol.

[0023] Through the above technical solution, alcohol can be transported to the wool felt along the pipeline through the action of the peristaltic pump, so as to fully moisten the wool felt and finally achieve the cooling of the slitting knife.

[0024] Beneficial effects:

[0025] The present application provides a battery pole piece cutting mechanism, comprising a knife holder, a cutting knife, a cooling core and a collecting tank; the cutting knife is installed in the knife holder, and the cooling core is arranged on the knife holder corresponding to the cutting knife; the collecting tank is arranged between the cooling core and the cutting knife; a receiving cavity is formed inside the collecting tank, and the receiving cavity is arranged corresponding to the cooling core; a slit adapted to the cutting knife is opened at the bottom of the collecting tank, and the outer edge of the cutting knife is located in the slit and contacts the cooling core; the height of the lowest point at the bottom of the collecting tank is lower than the height of the slit; the battery pole piece cutting mechanism described in the present application is provided with a collecting tank between the cooling core and the cutting knife, and a slit is provided at the bottom of the collecting tank, so that the edge of the cutting knife can contact the cooling core through the slit to achieve cooling, and the height of the lowest point at the bottom of the collecting tank is lower than the height of the slit, so that the excess alcohol on the cooling core can be collected and stored in the collecting tank to prevent the excess alcohol from dripping directly onto the battery pole piece, thereby ensuring the working performance of the battery pole piece and reducing the waste of alcohol. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] Figure 1 It is a structural schematic diagram of a battery electrode cutting mechanism proposed in one embodiment of the present application;

[0028] Figure 2 It is a schematic diagram of the positional relationship between the mounting seat, the collecting tank and the upper cutting knife in the battery electrode cutting mechanism proposed in one embodiment of the present application;

[0029] Figure 3 It is a top view of the mounting seat and the collecting tank in the battery pole sheet cutting mechanism proposed in one embodiment of the present application.

[0030] Description of reference numerals:

[0031] 1. Knife holder; 21. Upper slitting knife; 22. Lower slitting knife; 3. Mounting seat; 31. Connecting plate; 32. Through hole; 4. Wool felt; 5. Collecting tank; 51. Side plate; 52. Bottom plate; 53. Gap; 6. Peristaltic pump. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] In the related technologies, with the development of lithium battery industry, the safety of lithium battery has always been the focus of everyone's attention. The biggest cause of lithium battery safety problem is the burr of cutting pole piece. The burr of cutting pole piece, especially the metal burr, is extremely harmful to lithium battery. The large metal burr will pierce the diaphragm during winding, causing short circuit between positive and negative poles, causing battery heating and explosion, thus endangering the personal safety of users.

[0034] To solve the problem of burrs on the electrode sheets of lithium batteries, alcohol cooling is usually used. Alcohol is added to the wool felt online to moisten it. After the wet wool felt comes into contact with the upper slitting knife, it can cool down the upper slitting knife, thereby preventing the upper slitting knife from becoming blunt due to excessive temperature and causing burrs on the electrode sheets.

[0035] At present, the online alcohol dripping is controlled by a peristaltic pump, and there is a problem of too much alcohol on the wool felt and the excess alcohol dripping onto the pole piece. Alcohol is mainly composed of ethanol, which is a weak alkaline substance. It may produce corrosive substances when reacting with the active substances of the lithium battery pole piece (such as lithium, graphite or other transition metal oxides), causing changes in the structure and chemical properties of the pole piece, affecting the performance and safety of the battery; if the alcohol on the pole piece is mixed into the electrolyte, it may also affect the ion migration performance of the electrolyte, reduce the conductivity of the electrolyte, and ultimately cause battery performance degradation or failure.

[0036] In view of this, an embodiment of the present application proposes a battery electrode cutting mechanism.

[0037] See also Figure 1A battery electrode sheet slitting mechanism comprises a tool holder 1, a slitting knife, a cooling core and a collecting tank 5; the slitting knife is installed in the tool holder 1, and the cooling core is arranged on the tool holder 1 corresponding to the slitting knife; the collecting tank 5 is arranged between the cooling core and the slitting knife; a receiving cavity is formed inside the collecting tank 5, and the receiving cavity is arranged corresponding to the cooling core, and a gap 53 adapted to the slitting knife is opened at the bottom of the collecting tank 5, and the outer edge of the slitting knife is located in the gap 53 and contacts with the cooling core; the lowest point of the bottom of the collecting tank 5 is at a height lower than the height of the gap 53.

[0038] Specifically, in this embodiment, wool felt 4 is used as the cooling core, and alcohol is used as the coolant. The slitting knife includes an upper slitting knife 21 and a lower slitting knife 22, and the upper slitting knife 21 and the lower slitting knife 22 are respectively mounted on the knife holder 1 through rollers. The wool felt 4 is fixed to the knife holder 1 through a mounting seat 3, and is located above the upper slitting knife 21. The collecting tank 5 is arranged between the wool felt 4 and the upper slitting knife 21. A accommodating cavity is formed inside the collecting tank 5. The accommodating cavity is arranged below the wool felt 4 and is opposite to the wool felt 4. It can receive excess alcohol on the wool felt 4 and temporarily store the alcohol. A slit 53 is provided at the bottom of the collecting tank 5 corresponding to the position of the upper slitting knife 21. Figure 2 As shown, the wool felt 4 is close to the gap 53 at the bottom of the collecting tank 5. After assembly, the outer edge of the upper slitting knife 21 can extend into the gap 53 and contact the wool felt 4, so that the wool felt 4 moistened with alcohol can wet and cool the upper slitting knife 21. The lowest point of the bottom of the collecting tank 5 is lower than the gap 53, so that excess alcohol can be temporarily accumulated in the collecting tank 5 to prevent the excess alcohol from flowing out of the gap 53 and dripping onto the electrode.

[0039] Furthermore, the width of the slit 53 is greater than the thickness of the slitting knife.

[0040] See also Figure 2 In order to ensure that the outer edge of the upper slitting knife 21 can extend into the gap 53 and contact the wool felt 4, the width of the gap 53 should be slightly larger than the thickness of the outer edge of the upper slitting knife 21 to avoid interference between the upper slitting knife 21 and the bottom of the collecting trough 5 during operation, while also ensuring the wetting and cooling effect of the upper slitting knife 21.

[0041] Optionally, the collecting tank 5 includes an integrally formed bottom plate 52 and side plates 51 , and the height of the bottom plate 52 gradually decreases from the center to the edge.

[0042] In an optional embodiment, the collecting tank 5 includes a bottom plate 52 and a side plate 51, and the bottom plate 52 and the side plate 51 are integrally formed, wherein the height of the bottom plate 52 gradually decreases from the center to the edge, and the gap 53 is arranged at the center position of the bottom plate 52, so that the height of the position where the gap 53 is located can be ensured to be higher than the height of other positions of the bottom plate 52. When there is excess alcohol on the wool felt 4 and enters the collecting tank 5, the alcohol will fall on the bottom plate 52 and flow from the area near the middle to the edge, thereby avoiding flowing out directly from the gap 53 and dripping onto the electrode.

[0043] Optionally, the bottom plate 52 includes two inclined portions, and the two inclined portions are inclined toward the inner center of the collecting tank 5 at the same time.

[0044] In an optional embodiment, the bottom plate 52 includes two inclined portions, see Figure 2 The inclined portion is an inclined plane plate structure, the gap 53 is arranged between the two inclined portions, the two inclined portions are symmetrically distributed about the gap 53, and are inclined toward the inside of the collecting tank 5 at the same time. The inclined portion can play a role of guiding flow, and when excess alcohol on the wool felt 4 enters the collecting tank 5, the alcohol can flow from the central area of ​​the bottom plate 52 to the edge area along the inclined portion and accumulate in the bottom area of ​​the accommodating cavity.

[0045] In an optional embodiment, the side plate 51 includes a vertical section and an inclined section, both of which are flat plate structures, wherein the vertical section is connected to the side wall of the mounting seat 3, the inclined section is connected below the vertical section and connected to the bottom plate 52, and one end of the inclined section away from the vertical section extends toward the outside of the collecting tank 5, such as Figure 2 As shown, the inclined sections of the left and right side panels 51 are outwardly expanded, and the inclined sections of the side panels 51 and the inclined portion of the bottom panel 52 form a conical structure, and a conical cavity is formed in the conical structure, so that excess alcohol can be accumulated in the conical cavity. By providing the inclined section, the accommodation space at the lower end of the collection tank 5 can be further expanded, and the alcohol collection capacity can be increased.

[0046] Optionally, the cross-sectional shape of the bottom plate 52 is set to be an arc, and the concave surface of the arc-shaped bottom plate 52 faces the slitting knife.

[0047] In an optional embodiment, the bottom plate 52 may also adopt a curved plate structure, the cross-section of the bottom plate 52 is set to be arc-shaped, and the concave surface of the arc-shaped bottom plate 52 faces the side of the upper slitting knife 21, so that the center position of the arc-shaped bottom plate 52 can be ensured to be higher and the edge position can be lower. The gap 53 is set at the center position of the arc-shaped bottom plate 52, so that when the excess alcohol on the wool felt 4 enters the collecting tank 5, the alcohol falls on the bottom plate 52 and flows from the area near the middle to the edge position, thereby preventing the alcohol from directly flowing out of the gap 53 and dripping onto the electrode.

[0048] Furthermore, a mounting seat 3 is fixed on the tool holder 1; the mounting seat 3 has at least one open end, at least one of the open ends is arranged toward the collecting tank 5, the wool felt 4 is installed inside the mounting seat 3, and the interior of the mounting seat 3 is communicated with the interior of the collecting tank 5.

[0049] Specifically, in order to conveniently fix the wool felt 4 above the upper slitting knife 21, a mounting seat 3 is provided on the knife holder 1 to place the wool felt 4. The mounting seat 3 has at least one open end, and the wool felt 4 can be placed inside the mounting seat 3 through the open end.

[0050] In an optional embodiment, the mounting seat 3 has an open end, and the mounting seat 3 includes side enclosures arranged around and a connecting plate 31 arranged on the opposite side of the open end. The wool felt 4 is placed into the mounting seat 3 through the open end. When installed, the mounting seat 3 with the wool felt 4 is invertedly arranged above the upper slitting knife 21 with the open end facing downward and the connecting plate 31 facing upward, and the connecting plate 31 is connected and fixed to the knife holder 1. The interior of the mounting seat 3 is communicated with the interior of the collecting tank 5, so that excess alcohol on the wool felt 4 can flow into the collecting tank 5.

[0051] To further ensure that the wool felt 4 is stably placed in the mounting seat 3, the outer circumference of the wool felt 4 is slightly larger than the inner circumference of the mounting seat 3, so that the wool felt 4 can be completely filled in the interior of the mounting seat 3 by squeezing when placed, so as to prevent the wool felt 4 from falling off from the mounting seat 3 when the mounting seat 3 is installed upside down, thereby improving the stability of the installation.

[0052] Optionally, the connecting plate 31 and the side enclosure of the mounting seat 3 may be integrally formed, or may be connected in a detachable manner, and the connecting plate 31 and the tool holder 1 may be fixed by means of a snap connection and bolts.

[0053] Optionally, the collecting tank 5 is detachably connected to the mounting seat 3 .

[0054] In an optional embodiment, the side plate 51 of the collection tank 5 is connected to the side periphery of the mounting seat 3 in a detachable manner. Specifically, matching grooves and convex structures can be respectively provided on the side plate 51 of the collection tank 5 and the side periphery of the mounting seat 3, and overlap is achieved through the cooperation of the concave and convex structures, and then bolts are used to pass through the side plate 51 of the collection tank 5 and the side periphery of the mounting seat 3 to lock and fix the two. In this way, the top connecting plate 31 of the mounting seat 3 and the side periphery can be integrally formed.

[0055] In another optional embodiment, the side panel 51 of the collecting trough 5 and the side panel of the mounting seat 3 can also be integrally formed. In this way, the collecting trough 5 and the side panel of the mounting seat 3 are an integral structure and the two cannot be separated. In order to ensure that the wool felt 4 can be placed in the mounting seat 3, the top connecting plate 31 of the mounting seat 3 and the side panel are connected in a detachable manner. In this way, before placing the wool felt 4, the connecting plate 31 can be removed to open the top opening of the mounting seat 3, and then the connecting plate 31 can be installed after placing the wool felt 4, and then the connecting plate 31 can be connected and fixed to the tool holder 1.

[0056] Furthermore, the battery electrode cutting mechanism also includes a peristaltic pump 6, and the peristaltic pump 6 is connected to the cooling core through a pipeline, and the peristaltic pump 6 is used to transport coolant to the cooling core.

[0057] Specifically, the battery electrode cutting mechanism also includes a peristaltic pump 6, which is a device that squeezes the hose by rotating the roller inside the hose, thereby pushing the liquid to flow through the pipeline. By setting the peristaltic pump 6, alcohol can be continuously delivered to the wool felt 4 in the mounting seat 3. Specifically, see Figure 1 and Figure 3 A through hole 32 is opened on the top connecting plate 31 of the mounting seat 3, and a pipe is connected to the output port of the peristaltic pump 6, and the other end of the pipe is connected to the through hole 32, so that alcohol is transported along the pipe to the wool felt 4 in the mounting seat 3 through the action of the peristaltic pump 6 to moisten the wool felt 4.

[0058] Optionally, the collecting tank 5 comprises a transparent material.

[0059] Specifically, the collection tank 5 can be made of transparent material, which is convenient for the staff to directly observe the collection of alcohol, so that the collection tank 5 can be removed in time before the alcohol is full, and then the alcohol in the collection tank 5 can be transferred to a container for unified recovery. On the one hand, it can effectively prevent excessive accumulation of alcohol and overflow from the collection tank 5 and drip onto the battery electrodes. On the other hand, it also reduces the waste of alcohol, which is more economical and environmentally friendly.

[0060] Preferably, the transparent material can be selected from acrylic (Polymethyl methacrylate, PMMA for short), which is a highly transparent thermoplastic plastic formed by polymerization of methyl methacrylate. The high transparency of acrylic is comparable to that of glass, but compared to glass, acrylic is lighter, easier to install, less prone to breakage, and safer. At the same time, it also has good processing properties, and can be thermoformed or machined. In addition, acrylic has good tolerance to many chemicals, and has good solvent resistance and acid and alkali resistance. The present embodiment selects the collection tank 5 of acrylic material as the collection container for alcohol, which is not only convenient for observing the situation of alcohol collection, but also has high stability and safety.

[0061] Optionally, the mounting seat 3 in this embodiment can also be made of transparent acrylic material, which makes it easy to see the installation status of the wool felt 4 in the mounting seat 3, so as to ensure that the edge of the upper cutting knife 21 can contact the wool felt 4 through the gap 53 at the bottom of the collecting tank 5, thereby ensuring the cooling effect on the blade.

[0062] The battery pole piece cutting mechanism described in the embodiment of the present application is configured with a collecting trough 5 between the wool felt 4 and the upper cutting knife 21. A gap 53 is provided at the bottom of the collecting trough 5. Therefore, the outer edge of the upper cutting knife 21 can contact the wool felt 4 through the gap 53 to achieve cooling. The height of the lowest point at the bottom of the collecting trough 5 is lower than the height of the gap 53. Therefore, the excess alcohol on the wool felt 4 can be collected and stored in the collecting trough 5 to prevent the excess alcohol from directly flowing out of the gap 53 and dripping onto the battery pole piece, thereby ensuring the working performance of the battery pole piece and reducing the waste of alcohol, which is more economical and environmentally friendly.

[0063] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0064] It should also be noted that, in this article, the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. Without more restrictions, an element defined by the phrase "comprising a ..." does not exclude the existence of other identical elements in the process, method, article or terminal device comprising the element.

[0065] The technical solution provided by the present application is described in detail above. The principle and implementation method of the present application are described in this article using specific examples. The description of the above embodiments is only used to help understand the present application, and the content of this specification should not be understood as limiting the present application. At the same time, for those of ordinary skill in the art, according to the present application, there will be different forms of changes in the specific implementation methods and application scopes. It is not necessary and impossible to list all the implementation methods here, and the obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A battery pole sheet cutting mechanism, characterized in that: include: Knife holder, slitting knife, cooling core and collecting tank; The slitting knife is installed in the knife holder, and the cooling core is arranged on the knife holder corresponding to the slitting knife; The collecting tank is arranged between the cooling core and the slitting knife; An accommodating cavity is formed inside the collecting tank, and the accommodating cavity is arranged corresponding to the cooling core. A slit adapted to the slitting knife is opened at the bottom of the collecting tank, and the outer edge of the slitting knife is located in the slit and contacts the cooling core; The lowest point of the bottom of the collecting tank is located at a height lower than the height of the gap.

2. The battery pole piece cutting mechanism according to claim 1, characterized in that: The collecting tank comprises an integrally formed bottom plate and side plates, and the height of the bottom plate gradually decreases from the center to the edge.

3. The battery pole piece cutting mechanism according to claim 2, characterized in that: The bottom plate includes two inclined portions, and the two inclined portions are inclined toward the inner center of the collecting tank at the same time.

4. The battery pole piece cutting mechanism according to claim 2, characterized in that: The cross-sectional shape of the bottom plate is set to be an arc, and the concave surface of the arc-shaped bottom plate faces the slitting knife.

5. The battery pole piece cutting mechanism according to claim 1, characterized in that: The width of the slit is greater than the thickness of the slitting knife.

6. The battery pole piece cutting mechanism according to claim 1, characterized in that: The cooling core comprises wool felt, and a mounting seat is fixed on the tool holder; The mounting seat has at least one open end, and at least one of the open ends is arranged toward the collecting tank. The wool felt is installed inside the mounting seat, and the interior of the mounting seat is communicated with the interior of the collecting tank.

7. The battery pole piece cutting mechanism according to claim 6, characterized in that: The collecting tank is detachably connected to the mounting seat.

8. The battery pole piece cutting mechanism according to claim 1, characterized in that: The collecting tank comprises a transparent material.

9. The battery pole piece cutting mechanism according to claim 1, characterized in that: The battery pole sheet cutting mechanism also includes a peristaltic pump, which is connected to the cooling core via a pipeline, and the peristaltic pump is used to transport coolant to the cooling core.

10. The battery pole piece cutting mechanism according to claim 9, characterized in that: The coolant includes alcohol.

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