Thermal composite pole piece cutting control method and related equipment

Abstract

The invention provides a thermal composite pole piece cutting control method and related equipment, and the thermal composite pole piece cutting control method comprises the following steps: when a cutter cuts a pole piece material strip and the cutter does not return, the pole piece material strip is controlled to move in a first direction, and / or the cutter is controlled to move in a second direction, so that the section of the pole piece material strip is far away from the cutter, the first direction and the second direction are different from the cutting direction and the retreating direction of the cutter; and the cutter is controlled to return. The method has the beneficial effects that the conditions of powder falling and metal burr occurrence of the section of the pole piece can be improved.

Description

Technical Field

[0001] This application relates to the technical field of battery manufacturing, and particularly to a method for controlling the cutting of a thermally composite electrode sheet and related equipment. Background Art

[0002] In the preparation process of power batteries, high requirements are placed on the safety performance of the battery cells. Therefore, for each production and manufacturing link of the battery cells, a certain high standard needs to be ensured.

[0003] In some processes during the production and manufacturing of existing battery electrode sheets, a cutting knife is required to cut the electrode sheets. For example, in the thermally composite electrode sheet process, due to material limitations, laser cutting cannot be used for the positive electrode sheet. When using a cutting knife for cutting, the upper and lower cutting of the cutting knife will cause friction on the cross-section of the electrode sheet, resulting in powder falling and metal burrs on the cross-section of the electrode sheet, affecting product quality. Summary of the Invention

[0004] Embodiments of this application provide a method for controlling the cutting of a thermally composite electrode sheet and related equipment, which can improve the technical problems of powder falling and metal burrs on the cross-section of the electrode sheet.

[0005] In a first aspect, embodiments of this application provide a method for controlling the cutting of a thermally composite electrode sheet, including the following steps:

[0006] When the cutting knife cuts the electrode sheet strip and the cutting knife does not retract, control the electrode sheet strip to move in a first direction, and / or control the cutting knife to move in a second direction, so that the cross-section of the electrode sheet strip is away from the cutting knife, where the first direction and the second direction are both different from the cutting direction and the retracting direction of the cutting knife;

[0007] Control the cutting knife to retract.

[0008] In an embodiment, the included angle between the first direction and the conveying direction of the electrode sheet strip is greater than 90°, and the included angle between the second direction and the conveying direction is less than 90°.

[0009] In an embodiment, the first direction is the reverse direction of the conveying direction of the electrode sheet strip, and controlling the electrode sheet strip to move in the first direction, and / or controlling the cutting knife to move in the second direction includes:

[0010] Control the feeding motor to drive the electrode sheet strip to move a first preset distance in the first direction.

[0011] In an embodiment, the second direction is the conveying direction of the electrode sheet strip, and controlling the electrode sheet strip to move in the first direction, and / or controlling the cutting knife to move in the second direction includes:

[0012] After the pole piece part of the pole piece material to be cut is far away from the cutting tool, control the cutting tool to move in the second direction so that the cross section of the pole piece material tape is far away from the cutting tool.

[0013] In one embodiment, the method for controlling the cutting of the thermally compounded pole piece further includes:

[0014] Control the feeding motor to drive the pole piece material tape to move in the conveying direction;

[0015] When the pole piece material tape reaches the preset cutting position, control the cutting tool to cut the pole piece material tape.

[0016] In one embodiment, pole ears are provided on the pole piece material tape; the control of the feeding motor to drive the pole piece material tape to move in the conveying direction includes:

[0017] During the process of the pole piece material tape moving in the conveying direction, in response to the induction information of the pole ears, continue to control the feeding motor to drive the pole piece material tape to move a second preset distance;

[0018] Wherein, when the pole ear sensor senses the pole ears, the induction information is generated.

[0019] In one embodiment, the continuing to control the pole piece material tape to move a second preset distance includes:

[0020] Obtain the encoded data of the encoder of the feeding motor;

[0021] Judge whether the pole piece material tape moves the second preset distance according to the encoded data.

[0022] In one embodiment, after the continuing to control the pole piece material tape to move a second preset distance, it further includes:

[0023] Obtain the first dimension information of the pole piece material tape, wherein the first dimension information includes the dimension information of the part to be cut of the pole piece material tape;

[0024] When the first dimension information is within the preset dimension range, determine that the pole piece material tape reaches the preset cutting position.

[0025] In one embodiment, the method for controlling the cutting of the thermally compounded pole piece further includes:

[0026] When the first dimension information is outside the preset dimension range, control the feeding motor to drive the pole piece material tape to move so that the dimension information of the part to be cut is within the preset dimension range or matches the preset dimension information.

[0027] In one embodiment, the method for controlling the cutting of the thermally compounded pole piece further includes:

[0028] When the first dimension information is outside the preset dimension range, the encoder is calibrated according to the comparison between the first dimension information and the preset dimension information.

[0029] In one embodiment, obtaining the first dimension information of the pole piece strip includes:

[0030] Obtaining image information of the portion to be cut collected by a camera;

[0031] Performing image analysis on the image information to obtain the first dimension information.

[0032] In a second aspect, an embodiment of the present application provides an electronic device, which includes:

[0033] One or more processors;

[0034] A memory;

[0035] And one or more application programs, wherein the one or more application programs are stored in the memory and are configured to be executed by the processor to implement the above method.

[0036] In a second aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed, the above method is implemented.

[0037] In a third aspect, an embodiment of the present application provides a computer program product, including a computer program or instruction. When the computer program or instruction is executed, the above method is implemented.

[0038] Advantages of the embodiments of the present application:

[0039] In the embodiments of the present application, when the cutting knife cuts the pole piece strip and the cutting knife does not retract, by controlling the movement of the cutting knife or the pole piece strip, or controlling the movement of both the cutting knife and the pole piece strip, the cross-section of the pole piece strip is moved away from the cutting knife. Thus, when the cutting knife retracts to start the next cutting, the retraction process of the cutting knife will not rub the cross-section of the pole piece strip, thereby being able to improve the powder dropping and the appearance of metal burrs on the cross-section of the pole piece. Description of the Drawings

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0041] Figure 1 It is a schematic flowchart of a thermal composite pole piece cutting control method provided by an embodiment of the present application;

[0042] Figure 2 It is a schematic diagram of cutting a pole piece strip in the thermal composite pole piece cutting control method provided by an embodiment of the present application;

[0043] Figure 3 It is a schematic diagram of a pole piece part obtained after cutting a pole piece strip provided by an embodiment of the present application;

[0044] Figure 4 It is a schematic diagram after cutting a pole piece strip provided by an embodiment of the present application;

[0045] Figure 5 It is a schematic diagram of cutting a pole piece strip in the thermal composite pole piece cutting control method provided by an embodiment of the present application;

[0046] Figure 6 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

[0047] Explanation of reference numerals:

[0048] 10. Pole piece strip; 11. Pole piece part; 111. Tab; 112. Cutting area; 12. Feeding roller; 13. Cutter; 14. Sheet feeding jaw; 501. Processor; 502. Storage unit; 503. Power supply; 504. Input unit. Detailed implementation manners

[0049] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0050] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0051] In the description of the present application, "A and / or B" includes the following three combinations: only A, only B, and the combination of A and B.

[0052] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or demonstration". Any embodiment described as "exemplary" in this application is not necessarily to be construed as more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. In the following description, details are set forth for purposes of explanation. It should be understood that those of ordinary skill in the art can recognize that this application can be implemented without the use of these specific details. In other instances, well-known structures and processes are not elaborated in detail so as not to obscure the description of this application with unnecessary details. Therefore, this application is not intended to be limited to the embodiments shown, but rather to be in line with the broadest scope consistent with the principles and features disclosed in this application.

[0053] An embodiment of this application provides a method for controlling the cutting of a thermally composite pole piece. Please refer to Figure 1 and Figure 2 as shown, Figure 1 which is a schematic flowchart of a method for controlling the cutting of a thermally composite pole piece provided by an embodiment of this application, Figure 2 and [[ID=B]]

[0054]

[0055]

[0056]

[0057] Figure 2 Figure 2 Figure 4

[0058] The method for controlling the cutting of a thermally composite pole piece in an embodiment of this application includes the following steps:

[0055] Step 101: When the cutting tool 13 cuts the pole piece strip 10 and the cutting tool 13 has not retracted, control the pole piece strip 10 to move in a first direction, and / or control the cutting tool 13 to move in a second direction, so that the cross-section of the pole piece strip 10 is away from the cutting tool 13, where the first direction and the second direction are both different from the cutting direction and the retracting direction of the cutting tool 13.

[0056] Step 102: Control the cutting tool 13 to retract.

[0057] In an embodiment of this application, when the cutting tool 13 cuts the pole piece strip 10 and the cutting tool 13 has not retracted, it may refer to the period before the cutting tool 13 cuts off the pole piece strip 10 and the cutting tool 13 has not started to retract. Additionally, as Figure 2 shown, the cutting tool 13 can cut off the pole piece strip 10 and divide it into two separate parts, that is, Figure 2 the part of the pole piece strip 10 on the left side of the cutting tool 13 and the pole piece part 11 on the right side in Figure 4 . However, other forms are not excluded. As Figure 4 shown, in the preparation of some forms of pole pieces, the cutting tool 13 only cuts the middle of the pole piece strip 10, such as cutting the cutting area 112 in the figure. Therefore, when a cutting is completed, the cutting tool 13 does not cut off the pole piece strip 10 and divide it into two separate parts.

[0058] In addition, for the cutting of the pole piece strip 10, usually, after the first cutting, the pole piece strip 10 will continue to be fed and subsequent cutting will be carried out to obtain multiple cut pole piece parts 11. That is, if the pole piece is cut off, after the first cutting, on one side of the cutting knife 13 is the cut pole piece part 11, and on the other side is the part for subsequent cutting, that is, it is still the pole piece strip 10.

[0059] Usually, after the cutting knife 13 cuts the pole piece strip 10, it will be in close contact with the pole piece strip 10. Therefore, in the embodiment of the present application, when the cutting knife 13 cuts the pole piece strip 10 and the cutting knife 13 does not retract, by controlling the movement of the cutting knife 13 or the pole piece strip 10, or controlling the movement of both the cutting knife 13 and the pole piece strip 10, the cross-section of the pole piece strip 10 is moved away from the cutting knife 13, so that when the cutting knife 13 retracts to start the next cutting, the retraction process of the cutting knife 13 will not rub the cross-section of the pole piece strip 10, thereby being able to improve the powder dropping and the appearance of metal burrs on the cross-section of the pole piece.

[0060] In this embodiment, the cross-section of the pole piece strip 10 being moved away from the cutting knife 13 can be that the pole piece strip 10 moves to move the cross-section away from the cutting knife 13, or the cutting knife 13 moves to move the strip away from the cutting knife 13, or both the cutting knife 13 and the pole piece strip 10 move to achieve the separation of the cross-section. It can be understood that in addition to the movement of the pole piece strip 10 and the cutting knife 13 to prevent friction caused by the subsequent retraction of the cutting knife 13, the movement of the pole piece strip 10 and the cutting knife 13 generally should not interfere with other structures either. For example, when moving the cutting knife 13, it does not interfere with the already cut pole piece part 11. In some embodiments, after the pole piece part 11 is cut, the pole piece part 11 can be taken away or removed, and then the cutting knife 13 can be moved to ensure the normal operation of the equipment.

[0061] In some embodiments of the present application, the included angle between the first direction and the conveying direction of the pole piece strip 10 is greater than 90°, and the included angle between the second direction and the conveying direction is less than 90°.

[0062] It can be understood that the pole piece strip 10 can be conveyed in the conveying direction by relevant driving devices and the cutting of the pole piece strip 10 is carried out during this process. For the included angle between the two directions, it is within the range of 0° - 180°.

[0063] For the included angle between the first direction and the conveying direction of the pole piece strip 10 being greater than 90°, that is, the first direction and the conveying direction of the pole piece strip 10 form an obtuse angle or 180°. For the case where the included angle is 180°, that is, the first direction is the opposite direction of the conveying direction of the pole piece strip 10, corresponding Figure 2The x-direction shown in the figure, so that when controlling the movement of the pole piece strip 10 in the first direction, the cross-section of the pole piece strip 10 can be kept away from the cutting knife 13 and will not rub against the cutting knife 13.

[0064] For the angle between the second direction and the conveying direction of the pole piece strip 10 being less than 90°, that is, the second direction and the conveying direction of the pole piece strip 10 form an acute angle or 0°. For the case where the angle is 0°, that is, the second direction is the conveying direction of the pole piece strip 10, correspondingly Figure 2 The y-direction shown in the figure, so that when controlling the movement of the cutting knife 13 in the second direction, the cross-section of the pole piece strip 10 can be kept away from the cutting knife 13 and will not rub against the cutting knife 13. Among them, before moving the cutting knife 13, the pole piece part 11 obtained by cutting can be controlled to be taken away first to prevent the influence caused by collision.

[0065] In some embodiments of the present application, the first direction is the reverse direction of the conveying direction of the pole piece strip 10. Controlling the movement of the pole piece strip 10 in the first direction and / or controlling the movement of the cutting knife 13 in the second direction includes the steps of:

[0066] Controlling the feeding motor to drive the pole piece strip 10 to move a first preset distance in the first direction.

[0067] In this embodiment, controlling the cross-section of the pole piece strip 10 to be away from the cutting knife 13 is specifically achieved by controlling the pole piece strip 10 to move in the reverse direction of the conveying direction to be away. Specifically, the pole piece strip 10 is conveyed by the feeding motor. When controlling to be away, the feeding motor is directly controlled to reverse, so that the pole piece strip 10 retreats to achieve being away. Among them, the specific distance for the pole piece strip 10 to retreat is the first preset distance, so as to ensure that there will be no friction between the cutting knife 13 and the pole piece cross-section during the subsequent retreat of the cutting knife 13.

[0068] In a specific embodiment of the present application, the feeding motor can be a DDR (Direct Drive Rotary) motor, and the pole piece strip 10 is driven to move by driving the feeding roller 12, so as to achieve precise control of the feeding and retreat of the pole piece strip 10.

[0069] In some embodiments of the present application, the method for determining the first preset distance includes:

[0070] Obtaining the second dimension information of the pole piece strip 10;

[0071] Determining the dimensional tolerance value of the pole piece strip 10 according to the second dimension information;

[0072] Determining the first preset distance according to the dimensional tolerance value.

[0073] In this embodiment, the second dimension information is the width of the pole piece strip 10, and the dimensional tolerance value is the width tolerance value. In a specific embodiment, the width tolerance value is ±0.5 mm. The first preset distance determined thereby is a 1 mm distance, so as to ensure precise control of the pole piece strip 10, and to ensure a small movement and ensure that the cross section of the pole piece strip 10 will not rub against the retraction of the cutting knife 13.

[0074] In some embodiments of the present application, the second direction is the conveying direction of the pole piece strip 10. Controlling the pole piece strip 10 to move in the first direction and / or controlling the cutting knife 13 to move in the second direction includes:

[0075] After the pole piece portion 11 of the pole piece strip to be cut is far from the cutting knife 13, control the cutting knife 13 to move in the second direction so that the cross section of the pole piece strip 10 is far from the cutting knife 13.

[0076] In this embodiment, controlling the cross section of the pole piece strip 10 to be far from the cutting knife 13 is specifically achieved by controlling the cutting knife 13 to move away in the conveying direction. Specifically, usually, the cutting knife 13 can move in a direction perpendicular to the conveying direction so that the cutting knife 13 performs cutting and retraction operations. In this embodiment, the corresponding structure of the cutting knife 13 can be changed, such as setting a control motor to control the cutting knife 13 to be able to translate in the horizontal direction, thereby controlling the cutting knife 13 to move away from the cross section of the pole piece strip 10, and then controlling the cutting knife to retract to ensure that there is no friction with the pole piece cross section.

[0077] The pole piece portion 11 obtained by cutting the pole piece strip can be taken away by relevant feeding grippers 14, driving rollers, etc. to realize that the pole piece portion 11 after cutting is far from the cutting knife 13.

[0078] In some embodiments, for specific pole piece cutting, such as Figure 4 As shown, the cutting area 112 is cut. The pole piece portion 11 after cutting is still connected to the pole piece strip 10. This pole piece portion 11 can fall or be bent downward by gravity adaptation so that the pole piece portion 11 is far from the cutting knife 13 to prevent interference with the movement of the cutting knife 13 in this part.

[0079] In an alternative embodiment, it is also possible to control the pole piece strip 10 to move in the opposite direction of the conveying direction when the cutting knife 13 cuts the pole piece strip 10 and the cutting knife 13 has not retracted, and after the pole piece portion 11 of the pole piece strip 10 after cutting is far from the cutting knife 13, control the cutting knife 13 to move in the conveying direction to ensure that the subsequent retraction of the cutting knife 13 will not rub against the pole piece strip 10.

[0080] In some embodiments of the present application, the hot composite pole piece cutting control method further includes the steps:

[0081] Control the feeding motor to drive the pole piece strip 10 to move in the conveying direction;

[0082] When the pole piece strip 10 reaches the preset cutting position, control the cutter 13 to cut the pole piece strip 10.

[0083] In this embodiment, when the pole piece cutting device is working or cutting the pole piece strip 10 once as described above and making the cross section of the pole piece strip 10 away from the cutter 13, and after controlling the cutter 13 to retract, the feeding motor can be controlled to drive the pole piece strip 10 to move in the conveying direction to start the cutting work on the subsequent pole piece strip 10 or start a new round of cutting work on the pole piece strip 10.

[0084] Specifically, when it is recognized that the pole piece strip 10 reaches the preset cutting position, the cutter 13 is controlled to cut the pole piece strip 10 so that each time the pole piece strip 10 is cut, a pole piece portion 11 that meets the dimensional requirements can be obtained. Also, for the situation of cutting the pole piece strip 10 once and retracting the pole piece strip 10 so that its cross section is away from the cutter 13, and controlling the cutter 13 to retract and then starting a new round of cutting work on the pole piece strip 10, by recognizing that the pole piece strip 10 reaches the preset cutting position and starting to cut the pole piece strip 10, the retraction distance of the pole piece strip 10 can also be corrected to ensure the accuracy of each cut.

[0085] In some embodiments of the present application, a tab 111 is provided at the pole piece strip 10; the control of the feeding motor to drive the pole piece strip 10 to move in the conveying direction includes:

[0086] During the movement of the pole piece strip 10 in the conveying direction, in response to the induction information of the tab 111, continue to control the feeding motor to drive the pole piece strip 10 to move a second preset distance;

[0087] Wherein, when the tab sensor senses the tab 111, the induction information is generated.

[0088] In this embodiment, there is a tab 111 at the electrode strip 10. Besides being used as a structural part of the battery cell, the tab 111 also serves as an identification mark during the cutting process of the electrode sheet. Similarly, the tab 111 can be identified through a tab sensor, such as by arranging a device in the tab 111 for cooperation with the tab sensor to achieve induction, or an image sensor, etc. During the movement of the electrode strip 10 in the conveying direction, when the induction information of the tab 111 is recognized, the feeding motor is continuously controlled to drive the electrode strip 10 to move a second preset distance. The second preset distance is set according to the actual situation, so that after the electrode strip 10 is recognized according to the tab 111 and moves this distance, the size of the electrode sheet part 11 obtained by the cutter 13 cutting is the size that meets the production requirements. In this way, through the induction of the tab 111 at the electrode strip 10 and the movement control after induction, and at the same time for the situation where the electrode strip 10 needs to be moved back to prevent the cutter 13 from retreating and causing friction, the retreat distance of the electrode strip 10 can be directly corrected, thereby achieving more precise cutting.

[0089] In some embodiments of the present application, the step of continuously controlling the electrode strip 10 to move a second preset distance includes:

[0090] Obtain the encoded data of the encoder of the feeding motor;

[0091] Judge whether the electrode strip 10 moves the second preset distance according to the encoded data.

[0092] Generally, the movement control of the electrode strip 10 is realized by the feeding motor controlling the feeding roller 12. For example, the DDR motor drives the feeding roller 12 to drive the electrode strip 10 to move in a rolling form. During the driving process, the feeding motor drives the electrode strip 10 to move by receiving a control instruction corresponding to the movement of the second preset distance. For the long-term driving of the electrode strip 10, especially for the situation where the electrode strip 10 retreats each time to keep the cross-section away from the cutter 13, there may be a certain movement deviation only by controlling the movement of the feeding motor according to the instruction. Therefore, in this embodiment, for the feeding motor, by setting an encoder and obtaining its encoder encoded data in real time, it is judged whether the electrode strip 10 moves the second preset distance, so as to ensure to a certain extent whether the size of the part to be cut meets the actual requirements.

[0093] In some embodiments of the present application, after continuously controlling the electrode strip 10 to move a second preset distance, the steps further include:

[0094] Obtain the first size information of the electrode strip 10, where the first size information includes the size information of the part to be cut of the electrode strip 10;

[0095] When the first dimension information is within a preset dimension range, it is determined that the pole piece strip 10 reaches the preset cutting position.

[0096] In the embodiments of the present application, in addition to determining whether the pole piece strip 10 moves a second preset distance through the encoded data of the encoder of the feeding motor, the feeding control of the pole piece strip 10 is performed to ensure that the size of the portion to be cut in the pole piece strip 10 meets the requirements. At the same time, the identification of the dimension information of the portion to be cut of the pole piece strip 10 is also combined to accurately determine whether the size meets the requirements.

[0097] Among them, the acquisition of the first dimension information of the pole piece strip 10 can be through a distance sensor, an image sensor, etc. The first dimension information can specifically include the length information of the portion to be cut in the conveying direction.

[0098] Thus, after obtaining the first dimension information, by judging the specific value of the first dimension information, if it is within the preset dimension range, that is, it meets the dimension requirements or the error is acceptable, it is determined that the pole piece strip 10 reaches the preset cutting position, and then the cutter 13 can be controlled to perform cutting. In the embodiments of the present application, by controlling the feeding motor and judging the feeding distance through the encoder data of the feeding motor, and combining the identification of the dimension information of the portion to be cut of the pole piece strip 10, the feeding is accurately controlled to ensure that the pole piece portion 11 obtained by cutting meets the production requirements.

[0099] Among them, the first preset dimension range can be set according to actual needs. For example, the size requirement for the portion to be cut or the pole piece portion 11 to be obtained after cutting is a specific value, and the first preset dimension range is constructed according to the error value acceptable in production and this specific value.

[0100] In some embodiments of the present application, the hot composite pole piece cutting control method further includes:

[0101] When the first dimension information is outside the preset dimension range, control the feeding motor to drive the pole piece strip 10 to move so that the dimension information of the portion to be cut is within the preset dimension range or matches the preset dimension information.

[0102] In this embodiment, the first dimension information can specifically be the length value of the portion to be cut in the conveying direction, and the preset dimension range is also a preset length range. When the specific value of the first dimension information is less than the minimum boundary value of the preset dimension range or greater than the maximum boundary value of the preset dimension range, it indicates that the first dimension information is outside the preset dimension range. At this time, it also indicates that the size of the portion to be cut does not meet the production requirements. Therefore, the feeding motor is controlled to drive the pole piece strip 10 to move so that the size of the portion to be cut meets the production requirements.

[0103] In this embodiment, making the size of the part to be cut meet the production requirements can be that after driving the pole piece strip 10 to move, the size information of the part to be cut is within the above-mentioned preset size range. For example, if it exceeds the minimum boundary value of the preset size range, the pole piece strip 10 is controlled to stop conveying. At this time, it meets the production requirements and is within the acceptable error range. It can also be that after driving the pole piece strip 10 to move, the size information of the part to be cut matches the preset size information. The preset size information can be set according to the actual situation. The preset size information can be a more accurate size value, so that after the part to be cut is cut according to this size, the error value is smaller. Through this adjustment, it is possible to control the feeding distance only by the feeding motor within a relatively long period of time so that the size of the part to be cut meets the requirements, and thus avoid the need for frequent adjustment.

[0104] In some embodiments of the present application, the method for controlling the cutting of the thermocompound pole piece further includes:

[0105] When the first size information is outside the preset size range, the encoder is calibrated according to the comparison between the first size information and the preset size information.

[0106] When the first size information is outside the preset size range, it also indicates that when the feeding motor controls the feeding of the pole piece strip 10, the feeding distance may be inaccurate based on the encoded data of its encoder. This will affect the feeding of the pole piece strip 10 and will also affect the control of the backward movement of the pole piece strip 10 to a certain extent, and thus it is impossible to ensure preventing the friction caused by the backward movement of the cutting knife 13. Therefore, in this embodiment, the first size information is also compared with the preset size information to determine how much error the size information of the part to be cut of the pole piece strip 10 specifically generates. This error also reflects the feeding error when the feeding motor controls the feeding based on the encoded data of the encoder. Thus, based on this comparison and judgment, the encoder is calibrated, so that the subsequent feeding of the feeding motor is more accurate, and thus the adjustment process of the feeding motor for identifying the first size information after feeding the pole piece strip 10 and performing the feeding control again is reduced. At the same time, it can also make the backward movement control of the pole piece strip 10 more accurate to prevent the friction generated by the backward movement of the cutting knife 13 and the cross section of the pole piece strip 10.

[0107] In some embodiments of the present application, the obtaining of the first size information of the pole piece strip 10 includes:

[0108] Obtaining the image information of the part to be cut collected by the camera;

[0109] Performing image analysis on the image information to obtain the first size information.

[0110] In this embodiment, the camera can be a CCD (charge coupled device) camera or the like. By collecting image information and performing image analysis, the size of the part to be cut, that is, the first size information, can be accurately obtained, so that the control of the feeding motor and the calibration of its encoder are more accurate, and then it is convenient to produce battery electrodes that meet the requirements.

[0111] Referring to Figure 2 and Figure 6 As shown, in an alternative embodiment of the present application, the DDR motor is controlled to accelerate, and the pole piece tape 10 is conveyed by the feeding roller 12 to run in front of the cutting mechanism. The pole ear sensor senses the pole ear 111, and the DDR motor is further controlled according to the program. Then, after the pole piece tape 10 travels a second preset distance, it stops. At this time, the speed of the DDR motor is 0 to keep the position of the pole piece tape 10. At this time, the cutter 13 of the cutting mechanism moves in the cutting direction to cut off the pole piece tape 10 to obtain the pole piece part 11. After cutting off the pole piece tape 10, the cutter 13 does not retract, and the DDR motor drives in reverse to drive the feeding roller 12 to reverse, so that the pole piece tape 10 retreats 1 mm, so that the cross section of the pole piece tape 10 is far from the cutter 13. When the reverse drive of 1 mm is completed, the program will give a solenoid valve control command to the cutter 13 to make the cutter 13 retract to the original position, thereby preventing the friction between the cutter 13 and the cross section of the pole piece tape 10 during the retraction process, improving the pole piece powder dropping and metal burr conditions, and further improving the short circuit condition of the finished battery. Subsequently, the feeding gripper 14 is controlled to clamp the cut pole piece part 11 and feed the piece forward. When the cut pole piece part 11 is fed into the subsequent composite roller, the feeding gripper 14 retracts to the original position, and the cutting and feeding process of the pole piece tape 10 is completed once. Subsequently, the pole piece tape 10 can start to continue to repeat the above actions by the next induction pole ear.

[0112] Furthermore, an additional CCD camera is provided to collect the image information of the part to be cut through image acquisition, and perform image recognition and judgment to obtain the first size information. Whether it meets the requirements is judged according to the first size information, and the control of the DDR motor is carried out based on the data collected by the CCD camera. For example, the DDR motor is driven to drive the feeding roller 12 to drive the pole piece tape 10 to retreat or advance to ensure that the size of the part to be cut meets the requirements. Specifically, the length and width dimensions of the pole piece are recognized. If the dimensions are within the preset dimension range, there is no need to control the DDR motor for adjustment. If they are not within the preset dimension range, the DDR motor is controlled to adjust the pole piece tape 10 and will be calibrated with the encoder stroke at the same time to ensure subsequent accurate control.

[0113] In addition to the above-described method for controlling the cutting of heat-compounded pole pieces, the embodiment of the present application further provides an electronic device, which includes:

[0114] One or more processors;

[0115] Memory;

[0116] And one or more application programs, where the one or more application programs are stored in the memory and are configured to execute the operations of any of the methods described in any of the method embodiments by the processor.

[0117] Referring to Figure 6 As shown, it shows a schematic structural diagram of an electronic device involved in an embodiment of the present application. Specifically:

[0118] The electronic device may include a processor 501 with one or more processing cores, a storage unit 502 of one or more computer-readable storage media, a power supply 503, an input unit 504, and other components. Those skilled in the art can understand that Figure 6 The structure of the electronic device shown in does not constitute a limitation on the electronic device, and it may include more or fewer components than shown, or combine certain components, or have different component arrangements. Among them:

[0119] The processor 501 is the control center of the electronic device, connecting various parts of the entire electronic device through various interfaces and lines. By running or executing software programs and / or modules stored in the storage unit 502, and by calling the data stored in the storage unit 502, it executes various functions of the electronic device and processes data, thereby monitoring the electronic device as a whole. Optionally, the processor 501 may include one or more processing cores; preferably, the processor 501 may integrate an application processor and a modem processor. Among them, the application processor mainly processes the operating system, user interface, application programs, etc., and the modem processor mainly processes wireless communication. It can be understood that the above modem processor may not be integrated into the processor 501 either.

[0120] The storage unit 502 can be used to store software programs and modules. The processor 501 executes various functional applications and data processing by running the software programs and modules stored in the storage unit 502. The storage unit 502 may mainly include a program storage area and a data storage area. Among them, the program storage area can store the operating system, application programs required for at least one function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the electronic device. In addition, the storage unit 502 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices. Correspondingly, the storage unit 502 may also include a memory controller to provide the processor 501 with access to the storage unit 502.

[0121] The electronic device further includes a power supply 503 for supplying power to each component. Preferably, the power supply 503 can be logically connected to the processor 501 through a power management system, so as to manage functions such as charging, discharging, and power consumption management through the power management system. The power supply 503 can also include any components such as one or more DC or AC power supplies, a recharge system, a power failure detection circuit, a power converter or inverter, and a power status indicator.

[0122] The electronic device may further include an input unit 504, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function controls.

[0123] Although not shown, the electronic device may further include a display unit, etc., which will not be elaborated here. Specifically, in the embodiment of the present application, the processor 501 in the electronic device will load the executable files corresponding to the processes of one or more application programs into the storage unit 502 according to the following instructions, and the processor 501 will run the application programs stored in the storage unit 502 to implement various functions as follows:

[0124] When the cutting knife 13 cuts the pole piece strip 10 and the cutting knife 13 does not retract, control the pole piece strip 10 to move in the first direction, and / or control the cutting knife 13 to move in the second direction, so that the cross section of the pole piece strip 10 is away from the cutting knife 13, where the first direction and the second direction are both different from the cutting direction and the retracting direction of the cutting knife 13;

[0125] Control the cutting knife 13 to retract.

[0126] Those of ordinary skill in the art can understand that all or part of the steps in the above-mentioned various methods can be completed by a program or instruction, or by a program or instruction controlling relevant hardware. The program or instruction can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0127] The embodiment of the present application provides a computer-readable storage medium, which may include: a read-only memory (ROM, Read Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disc, etc. A computer program or instruction is stored in the computer-readable storage medium. When the computer program or instruction is executed, the above-mentioned method is implemented.

[0128] For example, when the computer program or instruction is loaded by the processor, the following steps can be executed:

[0129] When the cutting blade 13 cuts the electrode strip 10 and the cutting blade 13 does not retract, control the electrode strip 10 to move in a first direction, and / or control the cutting blade 13 to move in a second direction, so that the cross section of the electrode strip 10 is away from the cutting blade 13, where the first direction and the second direction are both different from the cutting direction and the retracting direction of the cutting blade 13;

[0130] Control the cutting blade 13 to retract.

[0131] According to an aspect of the present application, there is also provided a computer program product, including a computer program or instruction, which, when executed, enables the method described above to be implemented.

[0132] The computer program or instruction can be stored in a computer-readable storage medium. The processor of the electronic device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the electronic device executes the method provided in various optional implementation manners in the above embodiments.

[0133] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the detailed descriptions of other embodiments above, and details will not be repeated here.

[0134] In specific implementation, the above-mentioned units or structures can be implemented as independent entities, or can be arbitrarily combined and implemented as the same or several entities. For the specific implementation of the above-mentioned units or structures, reference may be made to the method embodiments above, and details will not be repeated here.

[0135] For the specific implementation of the above operations, reference may be made to the above embodiments, and details will not be repeated here.

[0136] The above embodiments of the present application have been introduced in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A method for controlling the cutting of a thermal composite pole piece, characterized in that, Including the following steps: When the cutting tool cuts the pole piece strip and the cutting tool does not retract, controlling the pole piece strip to move in a first direction, and / or controlling the cutting tool to move in a second direction, so that the cross section of the pole piece strip is away from the cutting tool, wherein the first direction and the second direction are both different from the cutting direction and the retracting direction of the cutting tool; Controlling the cutting tool to retract.

2. The thermal composite pole piece cutting control method according to claim 1, wherein The included angle between the first direction and the conveying direction of the pole piece strip is greater than 90°, and the included angle between the second direction and the conveying direction is less than 90°.

3. The thermal composite pole piece cutting control method according to claim 1, wherein The first direction is the reverse direction of the conveying direction of the pole piece strip, and the controlling the pole piece strip to move in the first direction, and / or controlling the cutting tool to move in the second direction includes: Controlling the feeding motor to drive the pole piece strip to move a first preset distance in the first direction.

4. The thermal composite pole piece cutting control method according to any one of claims 1-3, characterized in that, The second direction is the conveying direction of the pole piece strip, and the controlling the pole piece strip to move in the first direction, and / or controlling the cutting tool to move in the second direction includes: After the pole piece part of the pole piece strip to be cut is away from the cutting tool, controlling the cutting tool to move in the second direction, so that the cross section of the pole piece strip is away from the cutting tool.

5. The hot composite pole piece cutting control method according to any one of claims 1-3, characterized in that, Further including: Controlling the feeding motor to drive the pole piece strip to move in the conveying direction; When the pole piece strip reaches the preset cutting position, controlling the cutting tool to cut the pole piece strip.

6. The thermal composite pole piece cutting control method according to claim 5, wherein Pole tabs are provided at the pole piece strip; The controlling the feeding motor to drive the pole piece strip to move in the conveying direction includes: During the process of the pole piece strip moving in the conveying direction, in response to the sensing information of the pole tab, continuously controlling the feeding motor to drive the pole piece strip to move a second preset distance; Wherein, when the pole tab sensor senses the pole tab, the sensing information is generated.

7. The thermal composite pole piece cutting control method according to claim 6, characterized in that, The continuously controlling the pole piece strip to move a second preset distance includes: Obtaining the encoded data of the encoder of the feeding motor; Judging whether the pole piece strip moves the second preset distance according to the encoded data.

8. The thermal composite pole piece cutting control method according to claim 7, wherein After the continuously controlling the pole piece strip to move a second preset distance, further including: Obtaining the first size information of the pole piece strip, wherein the first size information includes the size information of the part of the pole piece strip to be cut; When the first size information is within the preset size range, determining that the pole piece strip reaches the preset cutting position.

9. The hot composite pole piece cutting control method according to claim 8, wherein, Further including: When the first size information is outside the preset size range, controlling the feeding motor to drive the pole piece strip to move, so that the size information of the part to be cut is within the preset size range or matches the preset size information.

10. The thermal composite pole piece cutting control method according to claim 8 or 9, characterized in that Further including: When the first size information is outside the preset size range, correcting the encoder according to the comparison between the first size information and the preset size information.

11. The thermal composite pole piece cutting control method according to claim 8 or 9, characterized in that The obtaining the first size information of the pole piece strip includes: Obtaining the image information of the part to be cut collected by the camera; Performing image analysis according to the image information to obtain the first size information.

12. An electronic device, characterized in that, The electronic device includes: One or more processors; A memory; and one or more applications, wherein the one or more applications are stored in the memory and are configured to be executed by the processor to implement the method according to any one of claims 1 to 11.

13. A computer-readable storage medium, characterized in that, A computer program or instructions are stored in the computer-readable storage medium, and when the computer program or instructions are executed, the method according to any one of claims 1-11 is implemented.

14. A computer program product, characterized in that, Includes a computer program or instructions, and when the computer program or instructions are executed, the method according to any one of claims 1 to 11 is implemented.

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