Pole piece processing device

Abstract

The utility model discloses a pole piece processing device, which relates to the technical field of battery production equipment and comprises a discharging mechanism, a laser cutter, a rolling mechanism and a heating mechanism, the discharging mechanism is configured to provide a to-be-processed pole piece; the laser cutter is arranged on the discharging side of the discharging mechanism and is configured to perform die cutting on the pole piece so as to cut out a pole lug; the rolling mechanism is arranged on the discharging side of the laser cutter and is configured to roll the pole piece; and the heating mechanism is arranged on the discharging side of the rolling mechanism and is configured to heat the rolled pole piece. According to the technical scheme provided by the utility model, the problem that the tape is easy to break in the tab extension process can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to a pole piece processing device. Background Art

[0002] The pole piece is an important component in the power battery. Both the positive and negative poles of the battery are connected to the pole piece. The pole piece is the part that is led out from the electrode. The battery is connected to other electronic components through the pole piece to achieve power supply.

[0003] In the related art, after the pole piece is stretched, rolled and laser die-cut, the edge of the pole ear is uneven, and a stretching structure is usually used to stretch the pole ear to extend the pole ear, which easily leads to the problem of broken belt. Utility Model Content

[0004] In view of the above problems, the present application provides a pole piece processing device, which aims to solve the problem of easy tape breakage during the extension process of the pole tab.

[0005] The present application provides a pole piece processing device, including a feeding mechanism, a laser cutter, a rolling mechanism and a heating mechanism; the feeding mechanism is configured to provide pole pieces to be processed; the laser cutter is arranged on the discharge side of the feeding mechanism, and is configured to die-cut the pole pieces to cut out the pole ears; the rolling mechanism is arranged on the discharge side of the laser cutter, and is configured to roll-press the pole pieces; the heating mechanism is arranged on the discharge side of the rolling mechanism, and is configured to heat the pole pieces after rolling.

[0006] In the technical solution of the embodiment of the present application, the technical solution of the utility model first provides the electrode to be processed through the feeding mechanism; the electrode to be processed first passes through the laser cutter, and the electrode is die-cut by the laser cutter to cut out the pole ear; the die-cut pole piece passes through the rolling mechanism, and the pole piece is rolled by the rolling mechanism to roll the pole piece to the target thickness; because the edge of the pole ear is wrinkled and uneven during the rolling process, the pole piece after rolling passes through the heating mechanism, and the heating mechanism heats the pole piece, which can soften the pole ear to release the stress of the pole ear, so that the wrinkles on the edge of the pole ear are unfolded, so that the pole ear is extended to be consistent with the main body of the pole piece. Therefore, this solution uses the method of heating the pole piece after rolling to release the stress of the pole ear, instead of using the method of stretching the pole ear using a stretching structure, which can effectively solve the problem of easy belt breakage during the extension process. In addition, the present solution places the laser cutter before the rolling mechanism, that is, the pole piece is first subjected to the laser cutting process and then the rolling process. Therefore, when the pole piece is laser cut, the pole piece is in a flat state, thereby improving the risk of defocusing and uncutting or even tape breakage caused by laser cutting.

[0007] In some embodiments, the heating mechanism is a magnetic induction heater. Such a design, by using a magnetic induction heater to heat the pole piece of the pole piece, has the following advantages: First, the alternating magnetic flux of the electromagnetic field is used to generate an induced current, and the electrical energy is converted into thermal energy, thereby achieving rapid heating. Compared with traditional constant temperature heating, the adjustable power, fast start and stop and faster response speed of electromagnetic induction heating can improve production efficiency and processing accuracy; Second, the energy conversion efficiency of electromagnetic induction heating is high, and its energy utilization rate can reach more than 95%. Compared with heat transfer methods such as resistance wire, hot air, and steam, its energy loss is smaller, and the energy saving effect is very significant; Third, electromagnetic induction heating does not require an external heat source, and it itself will not produce safety hazards such as flames and gas, and has very high safety and reliability; Fourth, there are no combustion products in the electromagnetic induction heating process, and no harmful substances such as waste gas, wastewater or odor will be generated, which will cause very little pollution to the environment and air, and will not produce electromagnetic wave radiation to affect human health; Fifth, electromagnetic induction heating can accurately control the heated object by adjusting process parameters, power size, time and other parameters, and can achieve advantages such as high temperature accuracy and uniform heating.

[0008] In some embodiments, the magnetic induction heater includes a first magnetic induction heating element and a second magnetic induction heating element arranged opposite to each other; the pole ear of the pole piece passes through the gap between the first magnetic induction heating element and the second magnetic induction heating element, the first magnetic induction heating element is configured to heat the front side of the pole ear, and the second magnetic induction heating element is configured to heat the back side of the pole ear. Such a design, by using the first magnetic induction heating element and the second magnetic induction heating element to heat the front side and the back side of the pole ear at the same time, can fully release the stress of the pole ear, fully expand the wrinkles on the edge of the pole ear, so that the pole ear is effectively extended to be consistent with the main body of the pole piece, and at the same time can improve the efficiency of releasing the stress of the pole ear.

[0009] In some embodiments, when the electrode piece to be processed is a multi-membrane area electrode piece, the electrode piece processing device further includes a first slitting mechanism, which is disposed between the unloading mechanism and the laser cutter and is configured to slit the middle pole ear of the multi-membrane area electrode piece to slit the multi-membrane area electrode piece into a plurality of single-membrane area electrode pieces. In this design, through the design of the first slitting mechanism, laser die-cutting, roller pressing and multi-membrane area slitting can be integrated into the electrode piece processing device, so that the electrode piece processing device can achieve the multi-functional effects of laser die-cutting, roller pressing and multi-membrane area slitting of the electrode piece, thereby eliminating the need to design an additional production line for slitting multi-membrane area electrode pieces, thereby simplifying the structural design.

[0010] In some embodiments, the pole ears on both sides of each single-film area pole piece correspond to two laser cutters respectively. Such a design allows a laser cutter to correspond to the pole ears on each side of the pole piece, so that the pole ears on both sides of each single-film area pole piece can be laser die-cut by two laser cutters at the same time to cut out pole ears of corresponding shapes, which can improve the die-cutting efficiency of the pole piece.

[0011] In some embodiments, the electrode processing device further includes a second slitting mechanism, which is disposed on the discharge side of the heating mechanism and is configured to divide the single-film region electrode into two. With this design, through the design of the second slitting mechanism, laser die-cutting, roller pressing, and single-film region stripping can be integrated into the electrode processing device, so that the electrode processing device can use the multifunctional effects of laser die-cutting, roller pressing, and single-film region stripping of the electrode, thereby eliminating the need to design an additional production line for stripping the single-film region electrode, thereby simplifying the structural design.

[0012] In some embodiments, the electrode processing device further includes a thickness detection mechanism, which is disposed on the discharge side of the heating mechanism and is configured to detect the thickness of the electrode after rolling. In such a design, the thickness of the electrode after rolling is detected by the thickness detection mechanism, and the thickness information is fed back to the host computer, which determines whether the thickness information is within a preset thickness range. When the detected thickness information is outside the preset thickness range, the host computer automatically adjusts the rolling thickness of the electrode by the rolling mechanism, thereby improving the rolling accuracy of the electrode.

[0013] In some embodiments, the electrode processing device further includes an appearance detector, which is disposed on the discharge side of the heating mechanism and is configured to detect the appearance of the electrode. In this design, the appearance detector performs appearance inspection on the electrode after laser die cutting, rolling and heating. When a defect is detected in the appearance of the electrode, the electrode is marked as a defective product, so as to automatically classify good and defective products.

[0014] In some embodiments, the electrode processing device further includes a material collecting mechanism, which is disposed on the discharge side of the heating mechanism and is configured to collect the processed electrode pieces. With such a design, the processed electrode pieces can be automatically collected by the material collecting mechanism without manual collection, thereby realizing fully automatic processing of the electrode pieces.

[0015] In some embodiments, the electrode processing device further includes a transmission roller, which is configured to sequentially transmit the electrode from the unloading mechanism to the laser cutter, the rolling mechanism, and the heating mechanism. With such a design, the electrode can be sequentially transmitted from the unloading mechanism to the laser cutter, the rolling mechanism, and the heating mechanism under the action of the transmission roller, so that laser die cutting, rolling, and heating can be achieved during the transmission of the electrode. Compared with the transmission method using a handling structure such as a manipulator, the transmission roller method used in this solution is more efficient in transmitting the electrode, thereby improving the processing efficiency of the electrode.

[0016] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, which can be implemented in accordance with the contents of the specification, and to make other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 This is a schematic structural diagram of an embodiment of a pole piece processing device of the present application;

[0019] Figure 2 This is an enlarged view of a portion of the structure of an embodiment of a pole piece processing device of the present application;

[0020] Figure 3 It is a partial structural schematic diagram of an embodiment of a pole piece processing device of the present application;

[0021] Figure 4 This is a heating principle diagram of the magnetic induction heater in one embodiment of the pole piece processing device of the present application.

[0022] Description of Figure Numbers:

[0023]

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0027] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0030] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0031] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0032] As a new type of secondary battery, lithium-ion power battery has the advantages of high energy density and power density, high operating voltage, light weight, small size, long cycle life, good safety, and green environmental protection. It has broad application prospects in portable appliances, power tools, large-scale energy storage, electric transportation power supply, etc.

[0033] The pole piece is an important component in the power battery. Both the positive and negative poles of the battery are connected to the pole piece. The pole piece is the part that is led out from the electrode. The battery is connected to other electronic components through the pole piece to achieve power supply.

[0034] In the related art, after the pole piece is stretched, rolled and laser die-cut, the edge of the pole ear is uneven, and a stretching structure is usually used to stretch the pole ear to extend the pole ear, which easily leads to the problem of broken belt.

[0035] Based on the above problems, the present invention proposes a pole piece processing device 100 , which aims to solve the problem that the pole tab 220 is easily broken during the extension process.

[0036] See also Figures 1 to 3 In one embodiment of the utility model, the electrode processing device 100 includes a discharge mechanism 10, a laser cutter 20, a rolling mechanism 30 and a heating mechanism 40; the discharge mechanism 10 is configured to provide a electrode 200 to be processed; the laser cutter 20 is arranged on the discharge side of the discharge mechanism 10, and is configured to die-cut the electrode 200 to cut out the electrode ear 220; the rolling mechanism 30 is arranged on the discharge side of the laser cutter 20, and is configured to roll the electrode 200; the heating mechanism 40 is arranged on the discharge side of the rolling mechanism 30, and is configured to heat the electrode 200 after rolling.

[0037] In one embodiment, the pole piece processing device 100 may further include a support frame, which is used to support and fix components such as the discharge mechanism 10 , the laser cutter 20 , the rolling mechanism 30 , and the heating mechanism 40 .

[0038] In one embodiment, the unwinding mechanism 10 provides the electrode piece 200 to be processed in an unwinding manner, so that the unwinding mechanism 10 can stably and continuously provide the electrode piece 200 to be processed.

[0039] Optionally, the unwinding mechanism 10 may include a winding rod and a driving structure, wherein the driving structure is used to drive the winding rod to rotate, and the winding rod is used to wind the pole piece 200 . Under the rotation of the winding rod, the pole piece 200 can be continuously output.

[0040] In practical applications, the driving structure of the discharge mechanism 10 can be a motor, a motor and a gear rack, or a motor and a gear belt, as long as it can drive the winding rod to rotate.

[0041] It should be noted that the laser cutter 20 is a common laser cutting device, and its laser head is used to face the pole piece 200. When the laser head emits laser, it can die-cut the pole piece 200 to cut out the pole ear 220. The specific structure of the laser cutter 20 will not be described here one by one.

[0042] It should be noted that the rolling mechanism 30 can also be a common rolling equipment, which may include a first pressing roller and a second pressing roller that are relatively arranged, a rolling space is formed between the first pressing roller and the second pressing roller, and the rotation direction of the first pressing roller is opposite to the rotation direction of the second pressing roller. The pole piece 200 passes through the rolling space between the first pressing roller and the second pressing roller during the transmission process, so that the pole piece 200 is rolled under the rotation of the first pressing roller and the second pressing roller, so that the pole piece 200 is rolled to the target thickness.

[0043] In actual application, the heating method of the heating mechanism 40 can be magnetic induction heating, resistance wire heating, ultraviolet heating, etc., as long as it can soften the pole ear 220 to release the stress of the pole ear 220, and expand the wrinkles on the edge of the pole ear 220, so that the pole ear 220 is extended to be consistent with the main body 210 of the pole piece 200.

[0044] In summary, in the technical solution of the embodiment of the present application, the technical solution of the utility model first provides the pole piece 200 to be processed through the discharge mechanism 10; the pole piece 200 to be processed first passes through the laser cutter 20, and the pole piece 200 is die-cut by the laser cutter 20 to cut out the pole ear 220; the pole piece 200 after die-cutting passes through the rolling mechanism 30, and the pole piece 200 is rolled by the rolling mechanism 30 to roll the pole piece 200 to the target thickness; since the edge of the pole ear 220 is wrinkled and uneven during the rolling process, the pole piece 200 after rolling passes through the heating mechanism 40, and the pole piece 200 is heated by the heating mechanism 40, which can soften the pole ear 220 to release the stress of the pole ear 220, so that the wrinkles on the edge of the pole ear 220 are unfolded, so that the pole ear 220 is extended to be consistent with the main body 210 of the pole piece 200. Therefore, this solution heats the rolled pole piece 200 to release the stress of the pole tab 220, instead of using a stretching structure to stretch the pole tab 220, which can effectively solve the problem of easy tape breakage during the extension process.

[0045] In addition, in the traditional process, the electrode piece 200 is usually first subjected to a rolling process, and then to a laser cutting process. Since the edge of the electrode piece 200 after rolling is uneven, when the electrode piece 200 is laser cut, it is easy to cause defocusing and uncutting at the uneven position, or even the risk of tape breaking. Therefore, the present solution places the laser cutter 20 before the rolling mechanism 30, that is, the electrode piece 200 is first subjected to a laser cutting process, and then to a rolling process. Therefore, when the electrode piece 200 is laser cut, the electrode piece 200 is in a flat state, thereby improving the risk of defocusing and uncutting, or even tape breaking, caused by laser cutting.

[0046] See also Figure 1 , Figure 2 In one embodiment of the present invention, the heating mechanism 40 is a magnetic induction heater.

[0047] As you can understand, magnetic induction heaters use the principle of electromagnetic induction heating, based on Faraday's law of electromagnetic induction. Figure 4 , high-frequency current generates an alternating magnetic field through an excitation coil, and the magnetic material generates eddy currents in the alternating magnetic field. The eddy currents cause metal atoms to collide and generate heat. When a conductor (such as a metal workpiece) is placed in this magnetic field, an induced current, i.e., eddy currents, is generated inside the conductor. These eddy currents cause the conductor molecules to vibrate and rub, thereby generating heat and achieving a heating effect. This heating method can heat metal parts quickly because the eddy currents are concentrated in the surface layer of the metal. This phenomenon is called the skin effect, which causes heat to be generated mainly on the metal surface. An induction heating system usually includes an induction coil, an AC power supply, and a workpiece to be heated. By controlling the frequency and intensity of the AC current, various metal materials can be effectively heated.

[0048] Such a design, by using a magnetic induction heater to heat the pole ear 220 of the pole piece 200, has the following advantages: First, the alternating magnetic flux of the electromagnetic field is used to generate an induced current, and the electrical energy is converted into thermal energy, thereby achieving rapid heating. Compared with traditional constant temperature heating, electromagnetic induction heating has adjustable power, fast start and stop, and faster response speed, which can improve production efficiency and processing accuracy; Second, the energy conversion efficiency of electromagnetic induction heating is high, and its energy utilization rate can reach more than 95%. Compared with heat transfer methods such as resistance wire, hot air, and steam, it has less energy loss and a significant energy-saving effect; third, electromagnetic induction heating does not require an external heat source, and it itself does not produce safety hazards such as flames and gas, and has very high safety and reliability; fourth, there are no combustion products during electromagnetic induction heating, and no harmful substances such as exhaust gas, wastewater, or odor are produced, which causes very little pollution to the environment and air, and at the same time, it does not produce electromagnetic wave radiation to affect human health; fifth, electromagnetic induction heating can accurately control the heated object by adjusting process parameters, power size, time and other parameters, and can achieve advantages such as high temperature accuracy and uniform heating, and the cold pressing speed and heating power are closed-loop; sixth, non-contact heating is adopted, which will not scratch or damage the pole ear 220; seventh, the area of ​​the pole ear 220 can be locally heated, and the main body 210 area of ​​the pole piece 200 has little impact.

[0049] See also Figure 1 In one embodiment of the utility model, the magnetic induction heater includes a first magnetic induction heating element 41 and a second magnetic induction heating element 42 which are arranged opposite to each other; the pole ear 220 of the pole piece 200 passes through the gap between the first magnetic induction heating element 41 and the second magnetic induction heating element 42, the first magnetic induction heating element 41 is configured to heat the front side of the pole ear 220, and the second magnetic induction heating element 42 is configured to heat the back side of the pole ear 220.

[0050] Such a design, by using the first magnetic induction heating element 41 and the second magnetic induction heating element 42 to heat the front and back sides of the pole ear 220 respectively, can fully release the stress of the pole ear 220, and fully unfold the wrinkles at the edge of the pole ear 220, so that the pole ear 220 can be effectively extended to be consistent with the main body 210 of the pole piece 200, and at the same time can improve the efficiency of releasing the stress of the pole ear 220.

[0051] In practical applications, the first magnetic induction heating element 41 and the second magnetic induction heating element 42 may have the same or different parameters such as shape, size, power, etc.

[0052] See also Figure 1 , Figure 3In one embodiment of the utility model, when the pole piece 200 to be processed is a multi-membrane area pole piece 200, the pole piece processing device 100 also includes a first cutting mechanism 50, and the first cutting mechanism 50 is arranged between the discharge mechanism 10 and the laser cutter 20, and is configured to cut the middle pole ear 220 of the multi-membrane area pole piece 200 to cut the multi-membrane area pole piece 200 into multiple single-membrane area pole pieces 200.

[0053] It can be understood that when the pole piece 200 provided by the discharge mechanism 10 is a multi-membrane area pole piece 200, the first cutting mechanism 50 is used to cut the middle pole ear 220 of the multi-membrane area pole piece 200; and when the pole piece 200 provided by the discharge mechanism 10 is a single-membrane area pole piece 200, there is no need to design the first cutting mechanism 50, or the first cutting mechanism 50 does not work at this time.

[0054] Such a design, through the design of the first slitting mechanism 50, can integrate laser die-cutting, rolling and multi-film area slitting in the pole piece processing device 100, so that the pole piece processing device 100 can achieve the multifunctional effects of laser die-cutting, rolling and multi-film area slitting of the pole piece 200, thereby eliminating the need to design an additional production line for slitting the multi-film area pole piece 200, thereby simplifying the structural design.

[0055] In actual application, the first cutting mechanism 50 can be a cutting knife or a laser cutter or other structural parts. As long as it can cut the middle pole ear 220 of the multi-membrane area pole piece 200 to cut the multi-membrane area pole piece 200 into multiple single-membrane area pole pieces 200, no specific limitation is made here.

[0056] See also Figure 1 In one embodiment of the present invention, the pole ears 220 on both sides of each single-film area pole piece 200 correspond to two laser cutters 20 respectively.

[0057] It can be understood that each single-membrane-area pole piece 200 corresponds to two laser cutters 20 . When the pole piece 200 is a two-membrane-area pole piece 200 , four laser cutters 20 are correspondingly provided, and so on.

[0058] Such a design allows a corresponding laser cutter 20 to be provided for the pole ears 220 on each side of the pole piece 200, so that the pole ears 220 on both sides of each single-film area pole piece 200 can be laser die-cut by two laser cutters 20 at the same time to cut out pole ears 220 of corresponding shapes, thereby improving the die-cutting efficiency of the pole piece 200.

[0059] See also Figure 1 , Figure 3In one embodiment of the present invention, the electrode processing device 100 further includes a second slitting mechanism 60, which is disposed on the discharge side of the heating mechanism 40 and is configured to divide the single film area electrode 200 into two.

[0060] It can be understood that the single-film area pole piece 200 refers to a pole piece 200 having pole ears 220 on both sides, and the shape of the pole piece 200 of the final product is that one side has a pole ear 220, so the single-film area pole piece 200 includes two pole pieces 200 of the final product.

[0061] Such a design, through the design of the second slitting mechanism 60, can integrate laser die-cutting, rolling and single-film area stripping into the pole piece processing device 100, so that the pole piece processing device 100 can use the multifunctional effects of laser die-cutting, rolling and single-film area stripping of the pole piece 200, thereby eliminating the need to additionally design a production line for stripping the single-film area pole piece 200, thereby simplifying the structural design.

[0062] In practical applications, the second slitting mechanism 60 may be a slitting knife or a laser slitter or other structural parts, as long as it can separate the single-film region electrode 200 into two, and no specific limitation is made here.

[0063] See also Figure 1 In one embodiment of the present invention, the electrode processing device 100 further includes a thickness detection mechanism 70 , which is disposed on the discharge side of the heating mechanism 40 and is configured to detect the thickness of the electrode 200 after rolling.

[0064] With such a design, the thickness of the electrode sheet 200 after rolling is detected by the thickness detection mechanism 70, and the thickness information is fed back to the host computer, which determines whether the thickness information is within the preset thickness range. When the detected thickness information is outside the preset thickness range, the host computer automatically adjusts the rolling thickness of the electrode sheet 200 by the rolling mechanism 30, thereby improving the rolling accuracy of the electrode sheet 200.

[0065] It should be noted that the thickness detection mechanism 70 is a common thickness detection device, and the specific structure of the thickness detection mechanism 70 will not be described in detail here.

[0066] See also Figure 1 In one embodiment of the present invention, the pole piece processing device 100 further includes an appearance detector 80 . The appearance detector 80 is disposed on the discharge side of the heating mechanism 40 and is configured to detect the appearance of the pole piece 200 .

[0067] With this design, the appearance detector 80 is used to inspect the appearance of the pole piece 200 after laser die-cutting, rolling and heating. When defects are detected in the appearance of the pole piece 200, the pole piece 200 is marked as a defective product, so as to automatically classify good and defective products.

[0068] It should be noted that the appearance detector 80 is a common appearance detection device, for example, it can be a camera, and the specific structure of the appearance detector 80 will not be described in detail here.

[0069] See also Figure 1 In one embodiment of the present invention, the electrode processing device 100 further includes a material collecting mechanism 90 , which is disposed on the discharge side of the heating mechanism 40 and is configured to collect the processed electrode 200 .

[0070] Such a design allows the processed pole pieces 200 to be automatically collected by the collecting mechanism 90 without manual collection, thereby achieving fully automatic processing of the pole pieces 200 .

[0071] In one embodiment, the material collection mechanism 90 can collect the processed pole pieces 200 in a rolling manner to facilitate storage of the pole pieces 200 .

[0072] Optionally, the material collection mechanism 90 may include a winding rod and a driving structure, wherein the driving structure is used to drive the winding rod to rotate, and the processed pole piece 200 can be wound and collected under the rotation of the winding rod.

[0073] In actual application, the driving structure of the material receiving mechanism 90 can be a motor, a structure in which a motor cooperates with a gear rack, or a structure in which a motor cooperates with a gear belt, as long as it can drive the winding rod to rotate.

[0074] See also Figure 1 In one embodiment of the present invention, the pole piece processing device 100 further includes a transmission roller 110 , which is configured to sequentially transmit the pole piece 200 from the unloading mechanism 10 to the laser cutter 20 , the rolling mechanism 30 and the heating mechanism 40 .

[0075] Such a design can, under the action of the transmission roller 110, sequentially transmit the electrode piece 200 from the discharge mechanism 10 to the laser cutter 20, the rolling mechanism 30 and the heating mechanism 40, so that laser die-cutting, rolling and heating can be achieved during the transmission of the electrode piece 200. Compared with the transmission method using a handling structure such as a robot, the present solution uses the transmission roller 110 to transmit the electrode piece 200 more efficiently, thereby improving the processing efficiency of the electrode piece 200.

[0076] According to some embodiments of the present application, the present application provides a pole piece processing device 100, see Figure 1 , Figure 2 The pole piece processing device 100 includes a transmission roller 110, and a material discharge mechanism 10, a first slitting mechanism 50, a laser cutter 20, a rolling mechanism 30, a magnetic induction heater, a thickness detection mechanism 70, a second slitting mechanism 60, an appearance detector 80 and a material receiving mechanism 90 which are sequentially arranged along the transmission direction of the transmission roller 110.

[0077] In the technical solution of the embodiment of the present application, the technical solution of the utility model is to output the electrode piece 200 to be processed from the unloading mechanism 10 under the transmission of the transmission roller 110; when the electrode piece 200 to be processed passes through the first cutting mechanism 50, the middle electrode ear 220 of the multi-film area electrode piece 200 is cut by the first cutting mechanism 50 to cut the multi-film area electrode piece 200 into a plurality of single-film area electrode pieces 200; when the electrode piece 200 passes through the laser cutter 20, the laser cutter 20 cuts the electrode piece The pole piece 200 is die-cut to cut out the pole ear 220; the pole piece 200 after die-cutting passes through the rolling mechanism 30, and the pole piece 200 is rolled by the rolling mechanism 30 to roll the pole piece 200 to a target thickness; since wrinkles and unevenness appear at the edge of the pole ear 220 during the rolling process, the pole piece 200 after rolling passes through the heating mechanism 40, and the pole piece 200 is heated by the magnetic induction heater, which can soften the pole ear 220, release the stress of the pole ear 220, and make the edge of the pole ear 220 The folds are unfolded so that the pole ear 220 is extended to be consistent with the main body 210 of the pole piece 200; the heated pole ear 220 passes through the thickness detection mechanism 70, and the thickness of the pole piece 200 after rolling is detected by the thickness detection mechanism 70, and the thickness information is fed back to the host computer, and the host computer determines whether the thickness information is within the preset thickness range. When the detected thickness information is outside the preset thickness range, the host computer automatically adjusts the rolling thickness of the pole piece 200 by the rolling mechanism 30; when the pole piece 200 passes through the second slitting mechanism 60, the single-film area pole piece 200 is divided into two by the second slitting mechanism 60; when the pole piece 200 passes through the appearance detector 80, the appearance of the pole piece 200 is detected by the appearance detector 80. When it is detected that there are defects in the appearance of the pole piece 200, the pole piece 200 is marked as a defective product to automatically realize the classification of good and defective products; finally, the processed pole piece 200 is collected by the material receiving mechanism 90 to complete the automatic processing of the pole piece 200.

[0078] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pole piece processing device, characterized in that: include: A material discharging mechanism, configured to provide the electrode pieces to be processed; A laser cutter, disposed on the discharge side of the discharge mechanism, configured to die-cut the pole piece to cut out the pole ear; A rolling mechanism, disposed on the discharge side of the laser cutter, configured to roll-press the electrode sheet; as well as A heating mechanism, disposed on the discharge side of the rolling mechanism, configured to heat the pole piece after rolling; The heating mechanism is a magnetic induction heater, and the magnetic induction heater includes a first magnetic induction heating element and a second magnetic induction heating element arranged opposite to each other; The pole lug of the pole piece is inserted into the gap between the first magnetic induction heating element and the second magnetic induction heating element. The first magnetic induction heating element is configured to heat the front side of the pole lug, and the second magnetic induction heating element is configured to heat the back side of the pole lug.

2. The pole piece processing device according to claim 1, characterized in that: When the electrode to be processed is a multi-film region electrode, the electrode processing device further comprises: The first cutting mechanism is arranged between the unloading mechanism and the laser cutter, and is configured to cut the middle pole ear of the multi-membrane area pole piece to cut the multi-membrane area pole piece into a plurality of single-membrane area pole pieces.

3. The pole piece processing device according to claim 2, characterized in that: The pole ears on both sides of each single-film region pole piece correspond to two of the laser cutters respectively.

4. The pole piece processing device according to claim 1, characterized in that: The pole piece processing device also includes: The second cutting mechanism is arranged on the discharge side of the heating mechanism and is configured to divide the single film area electrode into two.

5. The pole piece processing device according to claim 1, characterized in that: The pole piece processing device also includes: The thickness detection mechanism is arranged on the discharge side of the heating mechanism and is configured to detect the thickness of the electrode sheet after rolling.

6. The pole piece processing device according to claim 1, characterized in that: The pole piece processing device also includes: The appearance detector is arranged on the discharge side of the heating mechanism and is configured to detect the appearance of the electrode piece.

7. The pole piece processing device according to claim 1, characterized in that: The pole piece processing device also includes: The material collecting mechanism is arranged at the material discharging side of the heating mechanism and is configured to collect the processed pole pieces.

8. The pole piece processing device according to claim 1, characterized in that: The pole piece processing device also includes: The transmission roller is configured to sequentially transmit the pole piece from the unloading mechanism to the laser cutter, the rolling mechanism and the heating mechanism.

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