Slitting mechanism and slitting system

Abstract

A slitting mechanism (10) and a slitting system (20), relating to the field of batteries. The slitting mechanism comprises a slitting blade (100), a first detection mechanism (200), an alarm (400), and a controller (300); the slitting blade is used for cutting an electrode sheet material strip (700); the first detection mechanism is used for detecting a blade edge of the slitting blade; the first detection mechanism and the alarm are both electrically connected to the controller; and the controller is used for controlling the alarm to give an alarm when the first detection mechanism detects that the blade edge of the slitting blade has a nick. When it is detected that the blade edge of the slitting blade has a nick, the slitting mechanism controls the alarm to give an alarm to alert staffs to perform processing, thereby reducing the risk of burrs on electrode sheets and improving the slitting quality, such that battery cells manufactured by using the electrode sheets have high reliability.

Description

Slitting Mechanism and Slitting System

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese patent application filed on July 8, 2024, entitled “Slitting Mechanism and Slitting System” (application number: 2024109101707), the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of batteries, and more specifically, to a slitting mechanism and slitting system. Background Technology

[0004] Batteries are widely used in the new energy field, such as in electric vehicles and new energy vehicles, which have become a new trend in the automotive industry. The development of battery technology must consider multiple design factors simultaneously, such as battery life, energy density, discharge capacity, and charge / discharge rate. Furthermore, battery reliability must also be considered. However, current batteries have relatively poor reliability.

[0005] Summary of the Invention

[0006] The purpose of this application is to provide a slitting mechanism and slitting system, which aims to improve the problem of poor battery reliability in related technologies.

[0007] In a first aspect, embodiments of this application provide a slitting mechanism, which includes a cutter, a first detection mechanism, an alarm, and a controller. The cutter is used to cut electrode strips; the first detection mechanism is used to detect the blade of the cutter; the first detection mechanism and the alarm are both electrically connected to the controller, and the controller is used to control the alarm to sound when the first detection mechanism detects a notch in the blade of the cutter.

[0008] In the above technical solution, the slitting mechanism is equipped with a first detection mechanism that can detect whether there is a notch on the blade of the cutter. The first detection mechanism and the alarm are both electrically connected to the controller. When the first detection mechanism detects a notch on the blade of the cutter, the controller can promptly control the alarm to sound and remind the staff to handle the situation. This helps to reduce the risk of burrs on the electrode sheet, improve the slitting quality, and make the battery cells manufactured using this electrode sheet have high reliability.

[0009] As an optional technical solution in this application embodiment, the first detection mechanism includes a light emitter and a light receiver. The light emitter is used to emit a light signal to the blade of the cutter; the light receiver is used to receive the reflected light signal; the controller is electrically connected to the light emitter and the light receiver, and the controller is used to control the alarm to sound when the time interval between the light emitter emitting the light signal and the light receiver receiving the light signal exceeds a first preset range.

[0010] In the above technical solution, the light emitter emits a light signal towards the cutting edge of the cutter, and the light receiver receives the reflected light signal. When the time interval between the light emitter emitting the light signal and the light receiver receiving the light signal is less than a first preset range, the light signal may be blocked, making it impossible to detect the cutting edge. In this case, the controller needs to activate the alarm to remind the staff to handle the situation and restore the detection function of the first detection mechanism. When the time interval between the light emitter emitting the light signal and the light receiver receiving the light signal is greater than the first preset range, it indicates that the cutting edge of the cutter has a nick. In this case, the controller needs to activate the alarm to remind the staff to handle the situation. This helps to reduce the risk of burrs on the electrode sheet, improves the slitting quality, and makes the battery cells manufactured using this electrode sheet have high reliability.

[0011] As an optional technical solution in this application embodiment, the light emitter and the light receiver are disposed on the same side of the thickness direction of the cutter.

[0012] In the above technical solution, by setting the light emitter and the light receiver on the same side of the thickness direction of the cutter, when a notch appears on the blade of the cutter, the light signal emitted by the light emitter passes through the notch and is reflected back by other objects. In this way, the time interval between the light emitter emitting the light signal and the light receiver receiving the light signal is significantly increased, making it easier to determine that a notch has appeared on the blade of the cutter, which helps to improve the accuracy of detection.

[0013] As an optional technical solution in this application embodiment, the slitting mechanism includes two cutters. The two cutters are spaced apart along the thickness direction of the cutters. The two cutters are used to cut the electrode strip from both sides of the thickness direction of the electrode strip. The first detection mechanism corresponds to each cutter.

[0014] In the above technical solution, by setting two cutters to cut the electrode strip from both sides along its thickness direction, the slitting quality is improved. Each cutter is equipped with a first detection mechanism to detect whether the blade edge has a notch. When any cutter blade has a notch, the controller activates an alarm to remind the staff to handle the situation. This helps reduce the risk of burrs on the electrode, improves the slitting quality, and ensures that the battery cells manufactured using this electrode have high reliability.

[0015] As an optional technical solution in this application embodiment, the first detection mechanism is used to detect the distance between the first detection mechanism and the corresponding cutter, and the controller controls the alarm to sound based on the detection results of the two first detection mechanisms.

[0016] In the above technical solution, when the gap width between the two cutters is within a second preset range, the risk of burrs forming on the electrode sheet is low, and the slitting quality is high. The distance between the two first detection mechanisms is fixed, and each first detection mechanism can also detect the distance between itself and its corresponding cutter. The controller can calculate the gap width between the two cutters based on the detection results of the two first detection mechanisms. When the gap width exceeds the second preset range, the controller activates an alarm to remind the staff to handle the situation and adjust the gap width between the two cutters to the second preset range. This helps to reduce the risk of burrs forming on the electrode sheet, improves the slitting quality, and makes the battery cells manufactured using this electrode sheet have high reliability.

[0017] As an optional technical solution in this application embodiment, the first detection mechanism includes a light emitter and a light receiver. The light emitter is used to emit a light signal to the blade of the cutter; the light receiver is used to receive the reflected light signal; the controller is electrically connected to the light emitter and the light receiver, and the controller is used to obtain the distance between the first detection mechanism and the corresponding cutter based on the time interval between the light emitter emitting the light signal and the light receiver receiving the light signal.

[0018] In the above technical solution, the controller can calculate the distance between the first detection mechanism and its corresponding cutter based on the time interval between the light transmitter emitting the light signal and the light receiver receiving the light signal. It also calculates the gap width between the two cutters based on the detection results of the two first detection mechanisms. When the gap width exceeds a second preset range, the controller activates an alarm to alert the operator and adjust the gap width between the two cutters to the second preset range, thereby reducing the risk of burrs on the electrode sheet. This first detection mechanism can both detect whether the cutter blade has a notch and, in conjunction with the controller, detect the gap width between the two cutters. One mechanism performs multiple functions, simplifying the structure of the slitting mechanism and reducing its cost.

[0019] As an optional technical solution in this application embodiment, the slitting mechanism further includes a first adjustment mechanism, and the controller is electrically connected to the first adjustment mechanism; the first detection mechanism is used to detect the distance between the first detection mechanism and the corresponding cutter, and the controller controls the first adjustment mechanism to adjust the position of at least one cutter according to the detection results of the two first detection mechanisms, so as to control the gap width between the two cutters within a second preset range.

[0020] In the above technical solution, when the gap width between the two cutters is within a second preset range, the risk of burrs forming on the electrode sheet is low, and the slitting quality is high. The distance between the two first detection mechanisms is fixed, and each first detection mechanism can also detect the distance between itself and its corresponding cutter. The controller can calculate the gap width between the two cutters based on the detection results of the two first detection mechanisms. When the gap width exceeds the second preset range, the controller controls the first adjustment mechanism to adjust the position of at least one cutter, thereby adjusting the gap width between the two cutters to the second preset range. This helps to reduce the risk of burrs forming on the electrode sheet, improves the slitting quality, and makes the battery cells manufactured using this electrode sheet have high reliability.

[0021] As an optional technical solution in this application embodiment, the slitting mechanism includes a cutter shaft, each cutter shaft corresponding to a cutter, and at least one cutter corresponding to the first adjustment mechanism; the first adjustment mechanism includes a cutter rotation mechanism and a drive member, the cutter rotation mechanism being threadedly connected to the cutter shaft, the cutter being disposed on the cutter rotation mechanism, the drive member being electrically connected to the controller, the drive member being connected to the cutter rotation mechanism, and the drive member responding to the controller to drive the cutter rotation mechanism to rotate relative to the cutter shaft, thereby adjusting the position of the cutter on the cutter shaft.

[0022] In the above technical solution, by setting a driving component to drive the blade rotation mechanism to rotate relative to the blade shaft, the position of the cutter on the blade shaft can be adjusted. This allows the gap width between the two cutters to be easily and conveniently adjusted to the second preset range, thereby reducing the risk of burrs on the electrode sheet, improving the slitting quality, and making the battery cell manufactured using this electrode sheet have high reliability.

[0023] As an optional technical solution in this application embodiment, the cutting mechanism includes a second detection mechanism. Along the thickness direction of the cutter, the second detection mechanism is used to detect the gap width between the two cutters. The second detection mechanism is electrically connected to the controller, and the controller is used to control the alarm to sound when the gap width exceeds a second preset range.

[0024] In the above technical solution, when the gap width between the two cutters is within a second preset range, the risk of burrs forming on the electrode sheet is low, and the slitting quality is high. A second detection mechanism is used to detect the gap width between the two cutters. When the gap width exceeds the second preset range, the controller activates an alarm to alert personnel to adjust the gap width between the two cutters back to the second preset range. This helps reduce the risk of burrs forming on the electrode sheet, improves the slitting quality, and ensures that the battery cells manufactured using this electrode sheet have high reliability.

[0025] As an optional technical solution in this application embodiment, the second detection mechanism includes an image acquisition unit and an image processing unit. The image acquisition unit is used to acquire image information of the two cutters. The image processing unit is communicatively connected to the image acquisition unit and is used to acquire the gap width between the two cutters based on the image information. The image acquisition unit is electrically connected to the controller.

[0026] In the above technical solution, the image acquisition unit acquires the image information of the two cutters, and the image processing unit can obtain the gap width between the two cutters based on the image information. On the one hand, it does not need to contact the cutters and does not affect the cutters from cutting the electrode strip; on the other hand, it can also have high detection accuracy.

[0027] As an optional technical solution in this application embodiment, the cutter is a rotary cutter, and the first detection mechanism is used to detect the blade of the cutter during the rotation of the cutter.

[0028] In the above technical solution, the first testing agency can realize online testing of the cutting edge of the cutter, and the cutter does not need to be stopped, which helps to reduce the production capacity loss due to downtime.

[0029] Secondly, embodiments of this application also provide a slitting system, the slitting system including an unwinding mechanism, the aforementioned slitting mechanism, and a plurality of winding mechanisms, the unwinding mechanism being used to unwind electrode strips; the slitting mechanism being used to cut the electrode strips to form a plurality of electrodes; the plurality of winding mechanisms being disposed downstream of the slitting mechanism, and the plurality of winding mechanisms being used to wind up the cut electrodes respectively.

[0030] As an optional technical solution in this application embodiment, the slitting system further includes a second adjustment mechanism, which is disposed upstream of the slitting mechanism and is used to adjust the entry angle of the electrode strip into the slitting mechanism.

[0031] In the above technical solution, by setting a second adjustment mechanism to adjust the entry angle of the electrode strip into the slitting mechanism, the entry angle is controlled within a certain range, which helps to reduce the risk of burrs on the electrode, improve the slitting quality, and make the battery cell manufactured using the electrode have high reliability.

[0032] As an optional technical solution in this application embodiment, the second adjustment mechanism includes a first movable roller and a first driving member. The first movable roller is used for winding the electrode strip. The first driving member is connected to the first movable roller and is used to drive the first movable roller to move so as to adjust the entry angle of the electrode strip into the slitting mechanism.

[0033] In the above technical solution, the cutting angle of the electrode strip entering the slitting mechanism can be easily adjusted by driving the first movable roller with the first driving component. The structure is simple and reliable.

[0034] As an optional technical solution in this application embodiment, the slitting system further includes a plurality of third adjustment mechanisms. The third adjustment mechanisms are disposed downstream of the slitting mechanism and upstream of the winding mechanism. The third adjustment mechanisms are configured in a one-to-one correspondence with the winding mechanism. The third adjustment mechanisms are used to adjust the cutting angle of the electrode sheet cut out of the slitting mechanism.

[0035] In the above technical solution, by setting a third adjustment mechanism to adjust the cutting angle of the electrode cutting and slitting mechanism, the cutting angle is controlled within a certain range, which helps to reduce the risk of burrs on the electrode, improve the slitting quality, and make the battery cell manufactured using this electrode have high reliability.

[0036] As an optional technical solution in this application embodiment, the third adjustment mechanism includes a second movable roller and a second driving member. The second movable roller is used for winding the electrode sheet. The second driving member is connected to the second movable roller and is used to drive the second movable roller to move so as to adjust the cutting angle of the electrode sheet from the cutting mechanism.

[0037] In the above technical solution, the cutting angle of the electrode cutting and slitting mechanism can be easily adjusted by driving the second movable roller with the second driving component. The structure is simple and reliable. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 is a schematic block diagram of a slitting mechanism provided in some embodiments of this application;

[0040] Figure 2 is a schematic diagram of the slitting mechanism provided in some embodiments of this application;

[0041] Figure 3 is a schematic block diagram showing the connection of an optical transmitter, an optical receiver, and a controller according to some embodiments of this application;

[0042] Figure 4 is a schematic diagram of the slitting mechanism provided in some other embodiments of this application;

[0043] Figure 5 is a schematic diagram of the slitting mechanism provided in some embodiments of this application;

[0044] Figure 6 is a schematic block diagram showing the connection of the cutting mechanism, drive unit and controller provided in some embodiments of this application;

[0045] Figure 7 is a schematic diagram of the slitting mechanism provided in some embodiments of this application;

[0046] Figure 8 is a schematic block diagram of a second testing institution provided in some embodiments of this application;

[0047] Figure 9 is a schematic diagram of the structure of a slitting system provided in some embodiments of this application;

[0048] Figure 10 is a schematic block diagram of a second adjustment mechanism provided in some embodiments of this application;

[0049] Figure 11 is a schematic block diagram of a third adjustment mechanism provided in some embodiments of this application.

[0050] Icons: 10-Slitting mechanism; 100-Cutter; 110-Knife shaft; 200-First detection mechanism; 210-Light emitter; 220-Light receiver; 300-Controller; 400-Alarm; 500-First adjustment mechanism; 510-Knife rotation mechanism; 520-Driver; 600-Second detection mechanism; 610-Image acquisition unit; 620-Image processing unit; 700-Electrode strip; 800-Electrode; 20-Slitting system; 21-Unwinding mechanism; 22-Drive roller; 23-Second adjustment mechanism; 231-First movable roller; 232-First drive; 24-Third adjustment mechanism; 241-Second movable roller; 242-Second drive; 25-Rewinding mechanism. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0053] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0056] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0057] In this application, "multiple" means two or more (including two).

[0058] In this application, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited to these. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited to these. Battery cells are generally divided into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and the embodiments of this application are not limited to these.

[0059] The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or a battery pack. A battery generally includes a housing for encapsulating one or more battery cells. The housing can, to a certain extent, prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0060] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The uncoated positive current collector protrudes from the coated positive current collector and serves as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The uncoated negative current collector protrudes from the coated negative current collector and serves as the negative electrode tab. The negative current collector can be made of copper, and the negative active material can be carbon or silicon, etc. To ensure that a large current can pass through without melting, multiple positive tabs and multiple negative tabs are stacked together. The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0061] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0062] The development of battery technology must consider multiple design factors simultaneously, such as battery life, energy density, discharge capacity, and charge / discharge rate. Additionally, battery reliability must also be considered. However, current batteries have relatively poor reliability.

[0063] A battery includes electrode assemblies, which are the components where electrochemical reactions occur within the battery. Electrode assemblies are primarily composed of positive and negative electrode sheets wound or stacked. The quality of the electrode sheets has a significant impact on the battery's performance and reliability.

[0064] Currently, to mass-produce electrodes, multiple active material layers are typically coated onto a current collector at intervals to form an electrode strip. This strip is then slit to produce multiple electrodes at once. However, if the cutting edge of the slit is notched during the slitting process, burrs will be generated at the cut edge. This results in burrs on the slit electrodes. Using burred electrodes to manufacture electrode assemblies can cause the burrs to puncture the separator, leading to contact between the positive and negative electrodes and a short circuit. This can cause the battery cell to catch fire or even explode, resulting in poor battery cell reliability.

[0065] In view of this, this application provides a slitting mechanism, which includes a cutter, a first detection mechanism, an alarm, and a controller. The cutter is used to cut electrode strips, the first detection mechanism is used to detect the blade of the cutter, and both the first detection mechanism and the alarm are electrically connected to the controller. The controller is used to control the alarm to sound when the first detection mechanism detects a notch in the blade of the cutter.

[0066] The slitting mechanism is equipped with a first detection mechanism that can detect whether there is a notch on the blade of the cutter. The first detection mechanism and the alarm are both electrically connected to the controller. When the first detection mechanism detects a notch on the blade of the cutter, the controller can promptly activate the alarm to remind the staff to handle the situation. This helps to reduce the risk of burrs on the electrode sheet, improves the slitting quality, and makes the battery cells manufactured using this electrode sheet have high reliability.

[0067] The technical solutions described in the embodiments of this application are applicable to slitting electrode strips and can improve slitting quality.

[0068] Please refer to Figures 1 and 2. Figure 1 is a schematic block diagram of a slitting mechanism 10 provided in some embodiments of this application. Figure 2 is a structural schematic diagram of a slitting mechanism 10 provided in some embodiments of this application. This application provides a slitting mechanism 10, which includes a cutter 100, a first detection mechanism 200, an alarm 400, and a controller 300. The cutter 100 is used to cut electrode strip 700. The first detection mechanism 200 is used to detect the blade of the cutter 100. Both the first detection mechanism 200 and the alarm 400 are electrically connected to the controller 300. The controller 300 is used to control the alarm 400 to sound an alarm when the first detection mechanism 200 detects a notch in the blade of the cutter 100.

[0069] The cutter 100 is a component used to contact and cut the electrode strip 700. Optionally, the cutter 100 is disc-shaped and is a rotary cutter.

[0070] The first detection mechanism 200 is a detection structure used to detect whether the cutting edge of the cutter 100 has a nick. The first detection mechanism 200 can detect whether the cutting edge of the cutter 100 has a nick when the cutter 100 is stopped, or it can detect whether the cutting edge of the cutter 100 has a nick when the cutter 100 is working. In some embodiments, the first detection mechanism 200 detects whether the cutting edge of the cutter 100 has a nick when the cutter 100 is working, thereby achieving online detection of the cutter 100 and reducing production capacity loss caused by downtime.

[0071] The controller 300 is a component with information processing capabilities. Examples include CPUs (central processing units), PLCs (Programmable Logic Controllers), and ECUs (Electronic Control Units).

[0072] An alarm 400 is a product designed to prevent or mitigate the consequences of an event by using sound, light, air pressure, or other means to alert or warn us to take certain action. Alarms 400 include, but are not limited to, buzzers and alarm lights.

[0073] The first detection mechanism 200 is electrically connected to the controller 300, and the alarm 400 is electrically connected to the controller 300. When the first detection mechanism 200 detects that the blade of the cutter 100 has no notch, the controller 300 does not activate. When the first detection mechanism 200 detects that the blade of the cutter 100 has a notch, the controller 300 activates the alarm 400.

[0074] The slitting mechanism 10 is equipped with a first detection mechanism 200, which can detect whether there is a notch on the blade of the cutter 100. The first detection mechanism 200 and the alarm 400 are both electrically connected to the controller 300. When the first detection mechanism 200 detects a notch on the blade of the cutter 100, the controller 300 can promptly control the alarm 400 to sound an alarm and remind the staff to handle the situation. This helps to reduce the risk of burrs on the electrode 800, improves the slitting quality, and makes the battery cells manufactured using the electrode 800 have high reliability.

[0075] Please refer to Figures 2 and 3. Figure 3 is a schematic block diagram showing the connection between the light emitter 210, the light receiver 220, and the controller 300 according to some embodiments of this application. In some embodiments, the first detection mechanism 200 includes a light emitter 210 and a light receiver 220. The light emitter 210 is used to emit a light signal to the blade of the cutter 100, and the light receiver 220 is used to receive the reflected light signal. The controller 300 is electrically connected to the light emitter 210 and the light receiver 220. The controller 300 is used to control the alarm 400 to sound an alarm when the time interval between the light emitter 210 emitting the light signal and the light receiver 220 receiving the light signal exceeds a first preset range.

[0076] The light emitter 210 is a component used to emit light signals to the blade of the cutter 100. For example, the light emitter 210 can be a laser emitter, an infrared light emitter, etc.

[0077] The optical receiver 220 is a component used to receive reflected light signals. It should be noted that the reflected light signal can be a light signal reflected from the blade of the cutter 100, or a light signal reflected from other structural components. The optical receiver 220 can be a laser receiver, an infrared light receiver, etc.

[0078] The controller 300 is electrically connected to the light transmitter 210, facilitating the recording of the time when the light transmitter 210 transmits light signals. The controller 300 is also electrically connected to the light receiver 220, facilitating the recording of the time when the light receiver 220 receives light signals. When the time interval between the light transmitter 210 transmitting and the light receiver 220 receiving the light signal is within a first preset range, the controller 300 does not activate. When the time interval exceeds the first preset range, the controller 300 activates the alarm 400.

[0079] The first detection mechanism 200 can detect whether there is a nick in the blade of the cutter 100 when the cutter 100 is working, and its detection accuracy will be higher as the frequency of light emission from the light emitter 210 and the light receiver 220 increases.

[0080] The light emitter 210 emits a light signal to the blade of the cutter 100, and the light receiver 220 receives the reflected light signal. When the time interval between the light emitter 210 emitting the light signal and the light receiver 220 receiving the light signal is less than a first preset range, the light signal may be blocked, preventing the blade from being detected. In this case, the controller 300 needs to activate the alarm 400 to alert the staff and restore the detection function of the first detection mechanism 200. When the time interval between the light emitter 210 emitting the light signal and the light receiver 220 receiving the light signal is greater than the first preset range, it indicates that the blade of the cutter 100 has a nick. In this case, the controller 300 needs to activate the alarm 400 to alert the staff, thereby reducing the risk of burrs on the electrode 800, improving the slitting quality, and ensuring that the battery cells manufactured using this electrode 800 have high reliability.

[0081] Referring to Figures 2 and 3, in some embodiments, the light emitter 210 and the light receiver 220 are disposed on the same side of the cutter 100 in the thickness direction.

[0082] Please refer to Figure 2. The thickness direction of the cutter 100 is the X direction shown in the figure. When the cutter 100 is a rotating cutter 100, the cutter 100 is mounted on the cutter shaft 110. At this time, the thickness direction of the cutter 100 is the same as the axial direction of the cutter shaft 110.

[0083] Along the thickness direction of the cutter 100, the light emitter 210 and the light receiver 220 are disposed on the same side of the cutter 100.

[0084] By placing the light emitter 210 and the light receiver 220 on the same side of the thickness direction of the cutter 100, when a notch appears on the blade of the cutter 100, the light signal emitted by the light emitter 210 passes through the notch and is reflected back by other objects. In this way, the time interval between the light emitter 210 emitting the light signal and the light receiver 220 receiving the light signal is significantly increased, making it easier to determine that a notch has appeared on the blade of the cutter 100, which helps to improve the accuracy of detection.

[0085] In other embodiments, along the thickness direction of the electrode strip 700, the light emitter 210 and the light receiver 220 are disposed on the same side of the cutter 100.

[0086] Please refer to Figures 2 and 3. The thickness direction of the electrode strip 700 is the Y direction shown in the figures.

[0087] Please refer to Figure 4, which is a schematic diagram of the slitting mechanism 10 provided in some embodiments of this application. In some embodiments, the slitting mechanism 10 includes two cutters 100, which are spaced apart along the thickness direction of the cutters 100. The two cutters 100 are used to cut the electrode strip 700 from both sides of the electrode strip 700 in the thickness direction. The first detection mechanism 200 corresponds one-to-one with the cutters 100.

[0088] Two cutters 100 are spaced apart along the thickness direction of the cutter 100. The two cutters 100 are used to cut the electrode strip 700 from both sides of the thickness direction of the electrode strip 700 to improve the cutting quality.

[0089] In some embodiments, the cutter 100 is a rotary cutter 100, which is disposed on the cutter shaft 110. In this case, the two cutters 100 are spaced apart along the axial direction of the cutter shaft 110. Furthermore, along the thickness direction of the electrode strip 700, the two cutter shafts 110 are respectively located on both sides of the electrode strip 700.

[0090] The slitting mechanism 10 includes two first detection mechanisms 200, each first detection mechanism 200 corresponding to a cutter 100, and each first detection mechanism 200 is used to detect whether there is a notch on the blade of the cutter 100 corresponding to it.

[0091] By using two cutters 100 to cut the electrode strip 700 from both sides along its thickness direction, the slitting quality is improved. Each cutter 100 is equipped with a first detection mechanism 200 to detect whether the blade of the cutter 100 has a notch. When any cutter 100 has a notch, the controller 300 activates the alarm 400 to alert the staff to take action. This helps reduce the risk of burrs on the electrode 800, improves the slitting quality, and ensures that the battery cells manufactured using this electrode 800 have high reliability.

[0092] Please refer to Figures 2, 3 and 4. In some embodiments, the first detection mechanism 200 is used to detect the distance between the first detection mechanism 200 and its corresponding cutter 100, and the controller 300 controls the alarm 400 to sound an alarm based on the detection results of the two first detection mechanisms 200.

[0093] The first detection mechanism 200 can be used to detect whether there is a nick in the blade of the cutter 100, and it can also detect the distance between the first detection mechanism 200 and the corresponding cutter 100.

[0094] The distance between the two first detection mechanisms 200 is fixed. Each first detection mechanism 200 can detect the distance between itself and its corresponding cutter 100. In this way, the controller 300 can calculate the gap width between the two cutters 100 based on the distance between the two first detection mechanisms 200 and the distance detected by the two first detection mechanisms 200.

[0095] Please refer to Figure 4. Along the thickness direction of the cutter 100, the gap width between the two cutters 100 is L as shown in the figure.

[0096] When the gap width between the two cutters 100 is within the second preset range, the risk of burrs on the electrode 800 is small, and the slitting quality is high.

[0097] When the controller 300 calculates that the gap width between the two cutters 100 exceeds the second preset range, the controller 300 controls the alarm 400 to sound an alarm.

[0098] When the gap width between the two cutters 100 is within a second preset range, the risk of burrs forming on the electrode 800 is low, resulting in higher slitting quality. The distance between the two first detection mechanisms 200 is fixed, and each first detection mechanism 200 can also detect the distance between itself and its corresponding cutter 100. The controller 300 can calculate the gap width between the two cutters 100 based on the detection results of the two first detection mechanisms 200. When the gap width exceeds the second preset range, the controller 300 activates the alarm 400 to alert the staff to adjust the gap width between the two cutters 100 to the second preset range. This helps reduce the risk of burrs forming on the electrode 800, improves slitting quality, and ensures that the battery cells manufactured using this electrode 800 have high reliability.

[0099] Referring to Figures 2, 3, and 4, in some embodiments, the first detection mechanism 200 includes a light emitter 210 and a light receiver 220. The light emitter 210 emits a light signal to the blade of the cutter 100, and the light receiver 220 receives the reflected light signal. A controller 300 is electrically connected to the light emitter 210 and the light receiver 220. The controller 300 is used to obtain the distance between the first detection mechanism 200 and its corresponding cutter 100 based on the time interval between the light emitter 210 emitting the light signal and the light receiver 220 receiving the light signal.

[0100] The controller 300 can calculate the distance between the first detection mechanism 200 and its corresponding cutter 100 based on the time interval between the light signal emitted by the light transmitter 210 and the light signal received by the light receiver 220. It also calculates the gap width between the two cutters 100 based on the detection results of the two first detection mechanisms 200. When the gap width exceeds a second preset range, the controller 300 activates the alarm 400 to alert personnel to adjust the gap width between the two cutters 100 to the second preset range, thereby reducing the risk of burrs on the electrode sheet 800. The first detection mechanism 200 can both detect whether the cutter 100 has a notch and, in conjunction with the controller 300, detect the gap width between the two cutters 100. This single mechanism performs multiple functions, simplifying the structure of the slitting mechanism 10 and reducing its cost.

[0101] Please refer to Figure 5, which is a structural schematic diagram of the slitting mechanism 10 provided in some embodiments of this application. In some embodiments, the slitting mechanism 10 further includes a first adjusting mechanism 500, and the controller 300 is electrically connected to the first adjusting mechanism 500. The first detection mechanism 200 is used to detect the distance between the first detection mechanism 200 and its corresponding cutter 100. The controller 300 controls the first adjusting mechanism 500 to adjust the position of at least one cutter 100 according to the detection results of the two first detection mechanisms 200, so as to control the gap width between the two cutters 100 within a second preset range.

[0102] The first adjustment mechanism 500 is a structure used to adjust the position of the cutter 100. By adjusting the position of the cutter 100, the gap width between the two cutters 100 is controlled within a second preset range.

[0103] The first adjusting mechanism 500 is electrically connected to the controller 300. When the gap width calculated by the controller 300 based on the detection structures of the two first detection mechanisms 200 is within the second preset range, the controller 300 does not operate. When the gap width calculated by the controller 300 based on the detection structures of the two first detection mechanisms 200 exceeds the second preset range, the controller 300 controls the first adjusting mechanism 500 to adjust the position of at least one cutter 100, thereby controlling the gap width within the second preset range.

[0104] When the gap width between the two cutters 100 is within a second preset range, the risk of burrs forming on the electrode 800 is low, resulting in higher slitting quality. The distance between the two first detection mechanisms 200 is fixed, and each first detection mechanism 200 can also detect the distance between itself and its corresponding cutter 100. The controller 300 can calculate the gap width between the two cutters 100 based on the detection results of the two first detection mechanisms 200. When the gap width exceeds the second preset range, the controller 300 controls the first adjustment mechanism 500 to adjust the position of at least one cutter 100, thereby adjusting the gap width between the two cutters 100 to the second preset range. This helps reduce the risk of burrs forming on the electrode 800, improves slitting quality, and makes the battery cells manufactured using this electrode 800 have higher reliability.

[0105] Please refer to Figures 5 and 6. Figure 6 is a schematic block diagram showing the connection between the blade rotating mechanism 510, the drive member 520, and the controller 300 according to some embodiments of this application. In some embodiments, the slitting mechanism 10 includes a blade shaft 110, with each blade 110 corresponding to a cutter 100. At least one cutter 100 is correspondingly provided with a first adjustment mechanism 500. The first adjustment mechanism 500 includes the blade rotating mechanism 510 and the drive member 520. The blade rotating mechanism 510 is threadedly connected to the blade shaft 110, and the cutter 100 is disposed on the blade rotating mechanism 510. The drive member 520 is electrically connected to the controller 300 and connected to the blade rotating mechanism 510. The drive member 520 responds to the controller 300 to drive the blade rotating mechanism 510 to rotate relative to the blade shaft 110, thereby adjusting the position of the cutter 100 on the blade shaft 110.

[0106] The cutter shaft 110 is a rotating shaft used to drive the cutter 100 to rotate. The slitting mechanism 10 includes two cutter shafts 110, which are arranged on both sides of the electrode strip 700 in the thickness direction, so that the two cutters 100 mounted on the two cutter shafts 110 can cooperate to cut the electrode strip 700 from both sides of the electrode strip 700 in the thickness direction.

[0107] In some embodiments, only one first adjustment mechanism 500 may be provided, which is used to adjust the position of one cutter 100 on its cutter shaft 110. In other embodiments, two first adjustment mechanisms 500 may be provided, each corresponding to one cutter 100, and the two first adjustment mechanisms 500 are used to adjust the positions of the two cutters 100 on their cutter shafts 110 respectively.

[0108] The blade spinning mechanism 510 is a hollow sleeve structure with internal threads on the inner side and external threads on the outer circumferential surface of the blade shaft 110, allowing the blade spinning mechanism 510 and the blade shaft 110 to be threadedly connected. The cutter 100 is connected to the blade spinning mechanism 510, and the cutter 100 can be fixed to the blade spinning mechanism 510 or detachably connected to the blade spinning mechanism 510.

[0109] When the blade rotating mechanism 510 is stationary relative to the blade shaft 110, the blade shaft 110 can drive the cutter 100 to rotate, and the position of the cutter 100 on the blade shaft 110 remains unchanged. When the blade rotating mechanism 510 rotates relative to the blade shaft 110, the cutter 100 can move relative to the blade shaft 110.

[0110] The drive unit 520 is a structure used to drive the cutter rotation mechanism 510 to rotate relative to the cutter shaft 110. Optionally, the drive unit 520 is a hollow motor.

[0111] The controller 300 is electrically connected to the drive unit 520. When the gap width calculated by the controller 300 based on the detection structure of the two first detection mechanisms 200 exceeds the second preset range, the controller 300 controls the drive unit 520 to drive the blade rotating mechanism 510 to rotate relative to the blade shaft 110, so as to adjust the position of the cutter 100 on the blade shaft 110.

[0112] By setting the drive component 520 to drive the blade rotation mechanism 510 to rotate relative to the blade shaft 110, the position of the cutter 100 on the blade shaft 110 can be adjusted. This allows the gap width between the two cutters 100 to be easily and conveniently adjusted to the second preset range, thereby reducing the risk of burrs on the electrode 800, improving the slitting quality, and making the battery cell manufactured using the electrode 800 have high reliability.

[0113] Please refer to Figure 7, which is a schematic diagram of the slitting mechanism 10 provided in some embodiments of this application. In some embodiments, the slitting mechanism 10 includes a second detection mechanism 600. Along the thickness direction of the cutter 100, the second detection mechanism 600 is used to detect the gap width between the two cutters 100. The second detection mechanism 600 is electrically connected to the controller 300, which is used to control the alarm 400 to sound an alarm when the gap width exceeds a second preset range.

[0114] The second detection mechanism 600 is a structure used to detect the gap width between the two cutters 100. The second detection mechanism 600 can detect the gap width between the two cutters 100 when they are stopped, and it can also detect the gap width between the two cutters 100 when they are working. In some embodiments, the second detection mechanism 600 detects the gap width between the two cutters 100 when they are working, thereby achieving online detection and reducing production capacity loss due to downtime.

[0115] When the gap width detected by the second detection mechanism 600 is within the second preset range, the controller 300 does not activate. When the gap width detected by the second detection mechanism 600 exceeds the second preset range, the controller 300 activates the alarm 400.

[0116] When the gap width between the two cutters 100 is within a second preset range, the risk of burrs forming on the electrode 800 is low, resulting in higher slitting quality. A second detection mechanism 600 detects the gap width between the two cutters 100. When the gap width exceeds the second preset range, the controller 300 activates the alarm 400 to alert personnel to adjust the gap width between the two cutters 100 back to the second preset range. This helps reduce the risk of burrs forming on the electrode 800, improves slitting quality, and ensures higher reliability of the battery cells manufactured using this electrode 800.

[0117] Please refer to Figures 7 and 8. Figure 8 is a schematic block diagram of a second detection mechanism 600 provided in some embodiments of this application. In some embodiments, the second detection mechanism 600 includes an image acquisition unit 610 and an image processing unit. The image acquisition unit 610 is used to acquire image information of two cutters 100. The image processing unit 620 is communicatively connected to the image acquisition unit 610 and is used to acquire the gap width between the two cutters 100 based on the image information. The image acquisition unit 610 is electrically connected to the controller 300.

[0118] The image acquisition unit 610 is a component capable of acquiring image information from the two cutters 100. The image acquisition unit 610 includes, but is not limited to, a camera, webcam, or camcorder.

[0119] The image processing unit 620 is a component with information processing capabilities. Examples include CPUs (central processing units), PLCs (Programmable Logic Controllers), and ECUs (Electronic Control Units).

[0120] "Communication connection between image processing unit 620 and image acquisition unit 610" includes the image processing unit 620 being connected to the image acquisition unit 610 via wired connection methods such as wires or network cables, and also includes the image processing unit 620 being connected to the image acquisition unit 610 via wireless connection methods such as Bluetooth or Wi-Fi. The image processing unit 620 can be directly connected to the image acquisition unit 610, or it can be indirectly connected to the image acquisition unit 610 through an intermediate component.

[0121] The image acquisition unit 610 acquires image information of the two cutters 100, and the image processing unit 620 can obtain the gap width between the two cutters 100 based on the image information. On the one hand, it does not need to contact the cutters 100 and does not affect the cutting of the electrode strip 700 by the cutters 100; on the other hand, it can also have high detection accuracy.

[0122] In other embodiments, the slitting mechanism 10 includes a second detection mechanism 600 along the thickness direction of the cutter 100, which is used to detect the gap width between the two cutters 100. The slitting mechanism 10 also includes a first adjustment mechanism 500, and a controller 300 is electrically connected to both the second detection mechanism 600 and the first adjustment mechanism 500. The controller 300 controls the first adjustment mechanism 500 to adjust the position of at least one cutter 100 based on the detection result of the second detection mechanism 600, so as to control the gap width between the two cutters 100 within a second preset range.

[0123] In some embodiments, the cutter 100 is a rotary cutter 100, and the first detection mechanism 200 is used to detect the blade of the cutter 100 during the rotation of the cutter 100.

[0124] The first inspection unit 200 can perform online inspection of the cutting edge of the cutter 100 without stopping the machine, which helps to reduce downtime production capacity loss.

[0125] Please refer to Figure 9, which is a schematic diagram of the structure of a slitting system 20 provided in some embodiments of this application. This application also provides a slitting system 20, which includes an unwinding mechanism 21, the aforementioned slitting mechanism 10, and multiple winding mechanisms 25. The unwinding mechanism 21 is used to unwind the electrode strip 700, the slitting mechanism 10 is used to cut the electrode strip 700 to form multiple electrodes 800, and the multiple winding mechanisms 25 are disposed downstream of the slitting mechanism 10, each used to wind up the cut electrodes 800.

[0126] Referring to Figure 9, in some embodiments, the slitting system 20 further includes a second adjustment mechanism 23, which is located upstream of the slitting mechanism 10. The second adjustment mechanism 23 is used to adjust the entry angle of the electrode strip 700 into the slitting mechanism 10.

[0127] By setting the second adjustment mechanism 23 to adjust the entry angle of the electrode strip 700 into the slitting mechanism 10, the entry angle is controlled within a certain range, which helps to reduce the risk of burrs on the electrode 800, improve the slitting quality, and make the battery cell manufactured using the electrode 800 have high reliability.

[0128] Please refer to Figures 9 and 10. Figure 10 is a schematic block diagram of the second adjustment mechanism 23 provided in some embodiments of this application. In some embodiments, the second adjustment mechanism 23 includes a first movable roller 231 and a first driving member 232. The first movable roller 231 is used for winding the electrode strip 700. The first driving member 232 is connected to the first movable roller 231 and is used to drive the first movable roller 231 to move, so as to adjust the cutting angle of the electrode strip 700 entering the slitting mechanism 10.

[0129] The first movable roller 231 is a roller structure that allows the electrode strip 700 to be wound around, thereby supporting the electrode strip 700.

[0130] The first driving component 232 can be a linear electric cylinder, a linear hydraulic cylinder, a linear pneumatic cylinder, etc. The first driving component 232 can also include a rotary driving component and a transmission unit, wherein the transmission unit connects the rotary driving component and the first movable roller 231. The rotary driving component outputs rotational motion, and the transmission unit converts the rotational motion output by the rotary driving component into linear motion of the first movable roller 231 along a preset direction. The rotary driving component can be an electric motor, an internal combustion engine, etc. The transmission unit can be a crank-slider mechanism, a lead screw-nut mechanism, etc.

[0131] By driving the first movable roller 231 to move by the first driving component 232, the cutting angle of the electrode strip 700 entering the slitting mechanism 10 can be easily adjusted, and the structure is simple and reliable.

[0132] Referring to Figure 9, in some embodiments, the slitting system 20 further includes a plurality of third adjustment mechanisms 24. The third adjustment mechanisms 24 are disposed downstream of the slitting mechanism 10 and upstream of the winding mechanism 25. The third adjustment mechanisms 24 are disposed in a one-to-one correspondence with the winding mechanism 25. The third adjustment mechanisms 24 are used to adjust the cutting angle of the electrode 800 from the slitting mechanism 10.

[0133] The slitting system 20 may include two, three, four, or more third adjustment mechanisms 24. Each winding mechanism 25 is provided with one third adjustment mechanism 24.

[0134] By setting a third adjustment mechanism 24 to adjust the cutting angle of the electrode 800 cutting and slitting mechanism 10, the cutting angle is controlled within a certain range, which helps to reduce the risk of burrs generated in the electrode 800, improve the slitting quality, and make the battery cell manufactured using the electrode 800 have high reliability.

[0135] Please refer to Figures 9 and 11. Figure 11 is a schematic block diagram of the third adjustment mechanism 24 provided in some embodiments of this application. In some embodiments, the third adjustment mechanism 24 includes a second movable roller 241 and a second driving member 242. The second movable roller 241 is used for winding the electrode sheet 800, and the second driving member 242 is connected to the second movable roller 241. The second driving member 242 is used to drive the second movable roller 241 to move, so as to adjust the cutting angle of the electrode sheet 800 cutting and slitting mechanism 10.

[0136] The second movable roller 241 is a roller structure that allows the electrode 800 to be wound around, thereby supporting the electrode 800.

[0137] The second driving component 242 can be a linear electric cylinder, a linear hydraulic cylinder, a linear pneumatic cylinder, etc. The second driving component 242 can also include a rotary driving component and a transmission unit, wherein the transmission unit connects the rotary driving component and the second movable roller 241. The rotary driving component outputs rotational motion, and the transmission unit converts the rotational motion output by the rotary driving component into linear motion of the second movable roller 241 along a preset direction. The rotary driving component can be an electric motor, an internal combustion engine, etc. The transmission unit can be a crank-slider mechanism, a lead screw-nut mechanism, etc.

[0138] The cutting angle of the electrode sheet 800 cutting and slitting mechanism 10 can be easily adjusted by driving the second movable roller 241 to move via the second driving component 242. The structure is simple and reliable.

[0139] Referring to Figure 9, in some embodiments, the slitting system 20 further includes an active roller 22 for conveying the electrode strip 700.

[0140] Please refer to Figures 1 to 5 for some embodiments of this application.

[0141] This application embodiment provides a slitting mechanism 10, which includes a cutter 100, a first detection mechanism 200, an alarm 400, and a controller 300. The cutter 100 is used to cut electrode strip 700, the first detection mechanism 200 is used to detect the blade of the cutter 100, and the first detection mechanism 200 and the alarm 400 are both electrically connected to the controller 300. The controller 300 is used to control the alarm 400 to sound an alarm when the first detection mechanism 200 detects a notch in the blade of the cutter 100. The slitting mechanism 10 is equipped with a first detection mechanism 200, which can detect whether there is a notch on the blade of the cutter 100. The first detection mechanism 200 and the alarm 400 are both electrically connected to the controller 300. When the first detection mechanism 200 detects a notch on the blade of the cutter 100, the controller 300 can promptly control the alarm 400 to sound an alarm and remind the staff to handle the situation. This helps to reduce the risk of burrs on the electrode 800, improves the slitting quality, and makes the battery cells manufactured using the electrode 800 have high reliability.

[0142] The first detection mechanism 200 includes a light transmitter 210 and a light receiver 220. The light transmitter 210 emits a light signal to the blade of the cutter 100, and the light receiver 220 receives the reflected light signal. A controller 300 is electrically connected to the light transmitter 210 and the light receiver 220. The controller 300 controls the alarm 400 to sound when the time interval between the light transmitter 210 emitting the light signal and the light receiver 220 receiving the light signal exceeds a first preset range. The light transmitter 210 can emit a light signal to the blade of the cutter 100, and the light receiver 220 can receive the reflected light signal. When the time interval between the light transmitter 210 emitting the light signal and the light receiver 220 receiving the light signal is less than the first preset range, the light signal may be blocked, and the blade cannot be detected. In this case, the controller 300 needs to control the alarm 400 to sound, so as to remind the staff to handle the situation and restore the detection function of the first detection mechanism 200. When the time interval between the light transmitter 210 emitting the light signal and the light receiver 220 receiving the light signal is greater than the first preset range, it indicates that the blade of the cutter 100 has a notch. At this time, the controller 300 needs to control the alarm 400 to sound an alarm, so as to remind the staff to handle it. This helps to reduce the risk of burrs on the electrode 800, improve the slitting quality, and make the battery cell manufactured using the electrode 800 have high reliability.

[0143] The slitting mechanism 10 includes two cutters 100, spaced apart along the thickness direction of the cutters 100. The two cutters 100 are used to cut the electrode strip 700 from both sides of its thickness direction. A first detection mechanism 200 corresponds one-to-one with each cutter 100. By using two cutters 100 to cut the electrode strip 700 from both sides of its thickness direction, the slitting quality is improved. Each cutter 100 is equipped with a corresponding first detection mechanism 200 to detect whether the cutting edge of the cutter 100 has a notch. When any cutter 100 has a notch, the controller 300 activates the alarm 400 to alert the operator, thus reducing the risk of burrs on the electrode 800, improving slitting quality, and resulting in higher reliability of the battery cells manufactured using this electrode 800.

[0144] In some embodiments, the first detection mechanism 200 is used to detect the distance between the first detection mechanism 200 and its corresponding cutter 100. The controller 300 controls the alarm 400 to sound an alarm based on the detection results of the two first detection mechanisms 200. When the gap width between the two cutters 100 is within a second preset range, the risk of burrs forming on the electrode 800 is low, and the slitting quality is high. The distance between the two first detection mechanisms 200 is fixed, and each first detection mechanism 200 can also detect the distance between itself and its corresponding cutter 100. The controller 300 can calculate the gap width between the two cutters 100 based on the detection results of the two first detection mechanisms 200. When the gap width exceeds the second preset range, the controller 300 controls the alarm 400 to sound an alarm, reminding the staff to handle the situation and adjust the gap width between the two cutters 100 to the second preset range. This helps to reduce the risk of burrs forming on the electrode 800, improves the slitting quality, and makes the battery cells manufactured using the electrode 800 have high reliability. The first detection mechanism 200 can detect whether there is a notch on the blade of the cutter 100, and can also work with the controller 300 to detect the gap width between the two cutters 100. One mechanism realizes multiple functions, which helps to simplify the structure of the slitting mechanism 10 and reduce the cost of the slitting mechanism 10.

[0145] In other embodiments, the slitting mechanism 10 further includes a first adjusting mechanism 500, with a controller 300 electrically connected to the first adjusting mechanism 500. A first detection mechanism 200 is used to detect the distance between the first detection mechanism 200 and its corresponding cutter 100. The controller 300 controls the first adjusting mechanism 500 to adjust the position of at least one cutter 100 based on the detection results of the two first detection mechanisms 200, so as to control the gap width between the two cutters 100 within a second preset range. When the gap width between the two cutters 100 is within the second preset range, the risk of burrs forming on the electrode 800 is lower, and the slitting quality is higher. The distance between the two first detection mechanisms 200 is fixed. Each first detection mechanism 200 can also detect the distance between itself and the corresponding cutter 100. The controller 300 can calculate the gap width between the two cutters 100 based on the detection results of the two first detection mechanisms 200. When the gap width exceeds the second preset range, the controller 300 controls the first adjustment mechanism 500 to adjust the position of at least one cutter 100, thereby adjusting the gap width between the two cutters 100 to the second preset range. This helps to reduce the risk of burrs on the electrode 800, improve the slitting quality, and make the battery cell manufactured using the electrode 800 have high reliability.

[0146] The slitting mechanism 10 includes a cutter shaft 110, with each cutter shaft 110 corresponding to a cutter 100. At least one cutter 100 is provided with a first adjustment mechanism 500. The first adjustment mechanism 500 includes a cutter rotation mechanism 510 and a drive member 520. The cutter rotation mechanism 510 is threadedly connected to the cutter shaft 110, and the cutter 100 is disposed on the cutter rotation mechanism 510. The drive member 520 is electrically connected to the controller 300 and connected to the cutter rotation mechanism 510. The drive member 520 responds to the controller 300 to drive the cutter rotation mechanism 510 to rotate relative to the cutter shaft 110, thereby adjusting the position of the cutter 100 on the cutter shaft 110. By setting the drive component 520 to drive the blade rotation mechanism 510 to rotate relative to the blade shaft 110, the position of the cutter 100 on the blade shaft 110 can be adjusted. This allows the gap width between the two cutters 100 to be easily and conveniently adjusted to the second preset range, thereby reducing the risk of burrs on the electrode 800, improving the slitting quality, and making the battery cell manufactured using the electrode 800 have high reliability.

[0147] The cutter 100 is a rotating cutter, and the first detection mechanism 200 is used to detect the cutting edge of the cutter 100 during its rotation. The first detection mechanism 200 can realize online detection of the cutting edge of the cutter 100 without stopping the machine, which helps to reduce downtime production capacity loss.

[0148] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A slitting mechanism, wherein, include: A cutting blade is used to cut electrode strips; The first detection mechanism is used to detect the blade of the cutter; An alarm and a controller are provided, both the first detection mechanism and the alarm being electrically connected to the controller. The controller is used to control the alarm to sound when the first detection mechanism detects a notch in the blade of the cutter.

2. The slitting mechanism according to claim 1, wherein, The first testing institution includes: A light emitter is used to emit light signals to the blade of the cutter; A light receiver for receiving the reflected light signal; The controller is electrically connected to the light transmitter and the light receiver. The controller is used to control the alarm to sound when the time interval between the light transmitter transmitting the light signal and the light receiver receiving the light signal exceeds a first preset range.

3. The slitting mechanism according to claim 2, wherein, The light emitter and the light receiver are located on the same side of the thickness direction of the cutter.

4. The slitting mechanism according to any one of claims 1-3, wherein, The slitting mechanism includes two cutters, which are spaced apart along the thickness direction of the cutters. The two cutters are used to cut the electrode strip from both sides of the thickness direction of the electrode strip. The first detection mechanism corresponds to each cutter.

5. The slitting mechanism according to claim 4, wherein, The first detection mechanism is used to detect the distance between the first detection mechanism and the corresponding cutter, and the controller controls the alarm to sound based on the detection results of the two first detection mechanisms.

6. The slitting mechanism according to claim 5, wherein, The first testing institution includes: A light emitter is used to emit light signals to the blade of the cutter; A light receiver for receiving the reflected light signal; The controller is electrically connected to the light transmitter and the light receiver, and the controller is used to obtain the distance between the first detection mechanism and the corresponding cutter based on the time interval between the light transmitter transmitting the light signal and the light receiver receiving the light signal.

7. The slitting mechanism according to any one of claims 4-6, wherein, The slitting mechanism further includes a first adjusting mechanism, and the controller is electrically connected to the first adjusting mechanism; The first detection mechanism is used to detect the distance between the first detection mechanism and the corresponding cutter. The controller controls the first adjustment mechanism to adjust the position of at least one cutter according to the detection results of the two first detection mechanisms, so as to control the gap width between the two cutters within a second preset range.

8. The slitting mechanism according to claim 7, wherein, The slitting mechanism includes a blade shaft, which corresponds one-to-one with the cutter, and at least one cutter is provided with the first adjustment mechanism. The first adjustment mechanism includes a blade rotating mechanism and a driving member. The blade rotating mechanism is threadedly connected to the blade shaft, and the cutter is disposed on the blade rotating mechanism. The driving member is electrically connected to the controller and connected to the blade rotating mechanism. The driving member responds to the controller to drive the blade rotating mechanism to rotate relative to the blade shaft, so as to adjust the position of the cutter on the blade shaft.

9. The slitting mechanism according to any one of claims 4-8, wherein, The slitting mechanism includes a second detection mechanism along the thickness direction of the cutter. The second detection mechanism is used to detect the gap width between the two cutters. The second detection mechanism is electrically connected to the controller, which is used to control the alarm to sound when the gap width exceeds a second preset range.

10. The slitting mechanism according to claim 9, wherein, The second testing institution includes: The image acquisition unit is used to acquire image information of the two cutting blades; An image processing unit is communicatively connected to the image acquisition unit. The image processing unit is used to obtain the gap width between the two cutters based on the image information. The image acquisition unit is electrically connected to the controller.

11. The slitting mechanism according to any one of claims 1-10, wherein, The cutter is a rotary cutter, and the first detection mechanism is used to detect the blade of the cutter during the rotation of the cutter.

12. A slitting system, wherein, include: Unwinding mechanism, used for unwinding electrode strip material. ； The slitting mechanism according to any one of claims 1-11 is used to cut the electrode strip to form multiple Individual plates; Multiple winding mechanisms are located downstream of the slitting mechanism, and the multiple winding mechanisms are respectively used to wind up the multiple electrode sheets after cutting.

13. The slitting system according to claim 12, wherein, The slitting system also includes: The second adjustment mechanism is located upstream of the slitting mechanism and is used to adjust the entry angle of the electrode strip into the slitting mechanism.

14. The slitting system according to claim 13, wherein, The second adjustment mechanism includes: The first movable roller is used for winding the electrode strip; A first driving member is connected to the first movable roller. The first driving member is used to drive the first movable roller to move in order to adjust the entry angle of the electrode strip into the slitting mechanism.

15. The slitting system according to any one of claims 12-14, wherein, The slitting system also includes: Multiple third adjustment mechanisms are disposed downstream of the slitting mechanism and upstream of the winding mechanism. Each third adjustment mechanism corresponds to one of the winding mechanisms and is used to adjust the cutting angle of the electrode sheet from the slitting mechanism.

16. The slitting system according to claim 15, wherein, The third adjustment mechanism includes: The second movable roller is used for winding the electrode sheet; The second driving member is connected to the second movable roller. The second driving member is used to drive the second movable roller to move so as to adjust the cutting angle of the electrode sheet cutting out of the slitting mechanism.

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