Coating oven and battery manufacturing equipment

Abstract

The embodiment of the utility model provides a coating oven and battery manufacturing equipment. The coating oven is used for drying the pole piece, the coating oven comprises an oven and a detection mechanism, and the oven is provided with a drying area for the pole piece to pass through; the detection mechanism is arranged in the drying oven and is used for detecting whether the pole piece in the drying area deviates or not; the detection mechanism comprises a laser detection part, an execution part and a controller, the laser detection part and the execution part are electrically connected with the controller, the laser detection part comprises a laser emitting end and a laser receiving end, and the laser emitting end and the laser receiving end are located on the two sides of the pole piece in the thickness direction respectively and are oppositely arranged; the laser receiving end is used for receiving a laser signal transmitted by the laser transmitting end, and when the laser detection part detects that the pole piece deviates, the controller controls the execution part to execute an instruction. The coating drying oven can effectively monitor the deviation of the pole piece and ensure the drying effect of the pole piece.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a coating oven and battery manufacturing equipment. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] During battery production, the electrode sheets need to undergo a drying process. After coating, the electrode sheets need to be placed in a coating oven for drying to achieve the desired dryness. However, there is a risk of electrode sheet misalignment during the transport process within the coating oven. Misalignment can easily lead to wrinkling and cracking of the electrode sheets, affecting their quality. Utility Model Content

[0004] This application provides a coating oven and battery manufacturing equipment that can effectively monitor electrode misalignment and ensure the drying effect of the electrode.

[0005] In a first aspect, embodiments of this application provide a coating oven for drying electrode sheets. The coating oven includes an oven and a detection mechanism. The oven has a drying zone through which the electrode sheets pass. The detection mechanism is disposed inside the oven and is used to detect whether the electrode sheets in the drying zone are misaligned. The detection mechanism includes a laser detection component, an execution component, and a controller. Both the laser detection component and the execution component are electrically connected to the controller. The laser detection component includes a laser emitting end and a laser receiving end. The laser emitting end and the laser receiving end are located on both sides of the electrode sheet in the thickness direction and are arranged opposite to each other. The laser receiving end is used to receive the laser signal emitted by the laser emitting end. When the laser detection component detects that the electrode sheet is misaligned, the controller controls the execution component to execute the command.

[0006] In this solution, a laser detection component is installed inside the drying oven. This component includes a laser emitter and a laser receiver, located on opposite sides of the electrode's thickness direction. The laser receiver receives the laser beam emitted by the emitter. When the electrode shifts laterally within the oven, it blocks the laser beam emitted by the emitter, preventing the receiver from receiving it. This signal is then sent to the controller, indicating a lateral shift. The controller then instructs the execution component to perform a command. This command can alert the operator to the electrode shift, allowing them to take appropriate action. Alternatively, the execution component can be a built-in correction mechanism within the coating oven, with the controller and correction mechanism working in tandem to automatically correct the electrode's deviation. The laser detection component uses lasers to emit and receive laser beams. Compared to the existing technology that uses manual marking to determine electrode misalignment, which requires visual observation, the laser detection component can automatically detect whether the electrode has shifted in the coating oven in real time. This reduces the workload of the staff, eliminates the need for manual judgment of electrode misalignment, and has a higher degree of automation, ensuring the drying effect of the electrode.

[0007] According to some embodiments of this application, in the detection mechanism, there are two laser detection components, which are located on both sides of the width direction of the electrode.

[0008] In the above scheme, by setting the number of laser detection components to two, the two laser detection components can simultaneously detect both sides of the electrode width direction. Regardless of whether the electrode width direction is offset on either side, the detection mechanism can realize the offset detection of the electrode.

[0009] According to some embodiments of this application, the laser emitting end has multiple laser emitters distributed along the width direction of the electrode; the laser receiving end includes multiple laser receivers, and the number and position of the laser receivers correspond one-to-one with the position and number of the multiple laser emitters.

[0010] In the above scheme, the laser emitting end has multiple laser emitters, which are distributed at intervals along the width direction of the electrode. The number and position of the laser receivers correspond one-to-one with the position and number of the multiple laser emitters, which can detect the offset of the electrode in its width direction. The offset detection of the electrode is more accurate, and the offset of the electrode can be quantified. This makes it easier for the controller to optimize the control logic and enable the execution component to execute more appropriate instructions.

[0011] According to some embodiments of this application, the testing mechanism further includes two slide rails, which are disposed on the inner wall of the oven and located on both sides of the electrode sheet in the thickness direction, and the slide rails extend along the width direction of the electrode sheet; two laser emitting ends of the two laser detection components are slidably engaged with one of the two slide rails, and two laser receiving ends of the two laser detection components are slidably engaged with the other of the two slide rails.

[0012] In the above scheme, the slide rail allows the laser emitting end and the laser receiving end in the two laser detection components to slide and cooperate on the slide rail, thereby adjusting the position of the two laser detection components in the width direction on the electrode. This can adapt to the offset detection of electrode types with different widths, and the detection mechanism has a wider range of applications.

[0013] According to some embodiments of this application, the detection mechanism further includes a driving component disposed in the oven, which is used to drive the laser detection component to slide along the width direction of the electrode on the slide rail.

[0014] In the above solution, by setting the drive component, the laser detection component can be driven to slide automatically on the slide rail, thereby realizing the position adjustment of the laser detection component without manual adjustment. The adjustment of the laser detection component is more convenient and faster, reducing the workload of the staff.

[0015] According to some embodiments of this application, the drive assembly includes a mounting bracket, a first lead screw, a nut seat, and a first drive member. The mounting bracket is installed on the inner wall of the oven. The first lead screw is rotatably mounted on the mounting bracket and extends along the width direction of the electrode sheet. The nut seat is threadedly engaged with the first lead screw and slidably engaged with the slide rail. The laser detection component is mounted on the first lead screw through the nut seat. The first drive member is mounted on the mounting bracket and is used to drive the first lead screw to rotate about its axis.

[0016] In the above scheme, by adopting a lead screw and nut pair mechanism as the driving component, the first lead screw is rotatably mounted on the mounting bracket, and the laser detection component is mounted on the first lead screw through a nut seat. The nut seat is threadedly engaged with the lead screw and slidably engaged with the slide rail. Under the driving action of the first driving component, the first lead screw is driven to rotate, thereby causing the laser detection component to move along the extension direction of the first lead screw following the nut seat. The movement of the laser detection component is stable and reliable during the position adjustment process, and the position adjustment accuracy of the laser detection component is high.

[0017] According to some embodiments of this application, there are two first lead screws, which are located on opposite sides of the electrode sheet in the thickness direction. Each first lead screw is provided with two nut seats, and the threads of the two nut seats on the same first lead screw are opposite. The two laser emitting ends of the two laser detection components are respectively mounted on one of the two first lead screws through the two nut seats, and the two laser receiving ends of the two laser detection components are respectively mounted on the other of the two first lead screws through the two nut seats.

[0018] In the above scheme, by setting the number of first lead screws to two, the rotation of the first lead screws can simultaneously drive two laser emitters or two laser receivers to move synchronously, which simplifies the structure of the drive mechanism. Only by controlling the synchronous rotation of the two first lead screws can the two laser detection components move towards or away from each other.

[0019] According to some embodiments of this application, the drive assembly further includes a transmission member disposed between the first drive member and the two first lead screws. The first drive member is used to drive the two first lead screws to rotate synchronously through the transmission member, so that the two laser detection components slide towards or away from each other on the slide rail along the width direction of the electrode.

[0020] In the above scheme, by setting the transmission component, only one first driving component is needed. The two first lead screws can be connected into one unit through the first transmission component. The first driving component can drive the two first lead screws to rotate synchronously, realizing the function of one first driving component driving the two first lead screws to rotate synchronously. This simplifies the structure of the driving component and reduces the cost of the driving component.

[0021] According to some embodiments of this application, the detection mechanism further includes two pressure sensors, which are located on both sides of the electrode in the width direction and on the same side in the electrode thickness direction. The pressure sensors are used to detect the air pressure on both sides of the electrode in the width direction inside the oven.

[0022] In the above scheme, the hot air blown out by the drying components inside the coating oven has a certain pressure. By setting up pressure sensors, the pressure sensors can monitor the pressure of the flowing air in the areas on both sides of the electrode width direction, thus achieving monitoring of the air pressure inside the coating oven. Furthermore, the two pressure sensors are located on opposite sides of the electrode width direction and on the same side of the electrode thickness direction. When there is a pressure difference monitored by the two pressure sensors, it can be known that the air pressure difference is one of the causes of electrode misalignment, making it easier for operators to quickly eliminate the cause and better achieve electrode correction.

[0023] According to some embodiments of this application, both the laser emitter and the laser receiver are slidably mounted on a slide rail via corresponding brackets, and the pressure sensor is mounted on the bracket.

[0024] In the above scheme, by setting the pressure sensor on the corresponding bracket of the laser detection component, the pressure sensor can move together with the laser detection component to complete the monitoring of wind pressure on both sides of the electrode width direction.

[0025] According to some embodiments of this application, the number of testing institutions is set to multiple groups, and the multiple groups of testing institutions are distributed at intervals along the conveying direction of the electrode sheet.

[0026] In the above scheme, by setting the number of testing institutions to multiple groups, multiple groups of testing institutions can perform multi-point measurements on the electrode conveying direction in the coating oven, resulting in more testing points and more accurate monitoring of electrode offset.

[0027] According to some embodiments of this application, the coating oven includes a roller unit, which includes a plurality of rollers spaced apart along the conveying direction of the electrode sheet, the plurality of rollers being used to drive and guide the electrode sheet through the drying zone along its conveying direction.

[0028] In the above scheme, multiple idlers in the idler unit provide conveying and guiding functions for the electrode sheets, allowing the electrode sheets to pass smoothly through the drying zone.

[0029] Secondly, embodiments of this application provide a battery manufacturing apparatus, which includes the coating oven of any of the foregoing embodiments.

[0030] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A front view of a coating oven provided for some embodiments of this application;

[0033] Figure 2 for Figure 1 Enlarged diagram of A in the middle;

[0034] Figure 3 This is a schematic diagram of the control logic of the detection mechanism in a coating oven provided in some embodiments of this application;

[0035] Figure 4 A partial top view of a coating oven provided for some embodiments of this application;

[0036] Figure 5A partial side view of a coating oven provided for some embodiments of this application;

[0037] Figure 6 This is a schematic diagram of the structure of the laser emitting end in a coating oven provided in some embodiments of this application.

[0038] Icons: 100-Coating oven; 10-Oven; 20-Detection mechanism; 21-Laser detection component; 211-Laser emitter; 212-Laser receiver; 22-Actuating component; 23-Controller; 24-Slide rail; 25-Drive assembly; 251-Mounting bracket; 252-First lead screw; 253-Nut seat; 254-First drive component; 255-Transmission component; 2551-Pulley; 2552-Synchronous belt; 26-Pressure sensor; 27-Bracket; 30-Idler roller; 200-Electrode sheet. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0041] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0044] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0045] In this application, the battery may include lithium-ion batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited thereto. The battery may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited thereto.

[0046] During battery production, the electrode sheets need to undergo a drying process. After coating, the electrode sheets need to be placed in a coating oven for drying to achieve the desired dryness. However, there is a risk of electrode sheets shifting during transport within the coating oven, which can easily lead to wrinkling and cracking of the electrode sheets.

[0047] Currently, electrode misalignment is typically detected manually. For electrodes of varying widths, their position on the rollers within the coating oven differs. Manual calculations are performed based on the electrode width and the total length of the rollers to determine the projection of the electrode edge onto the rollers when the electrode is centered. Corresponding lines are then drawn to mark these positions. However, this method suffers from inaccuracies in the marking distance and wastes significant manpower. During coating, manual visual inspection compares the electrode edge to these marked lines to determine if the electrode has shifted, and the amount of shift is calculated based on this comparison. This method suffers from low efficiency in detecting electrode misalignment. Furthermore, electrode adjustment and correction rely on manual control of the correction mechanism by technicians, resulting in lengthy setup times and a tendency for electrode wrinkling and cracking.

[0048] In view of this, in order to solve the problem of low detection efficiency of electrode misalignment in coating oven, some embodiments of this application provide a coating oven, which includes an oven and a detection mechanism. The oven has a drying zone through which the electrode passes. The detection mechanism is disposed in the oven and is used to detect whether the electrode in the drying zone is misaligned. The detection mechanism includes a laser detection component, an execution component, and a controller. The laser detection component and the execution component are both electrically connected to the controller. The laser detection component includes a laser emitting end and a laser receiving end. The laser emitting end and the laser receiving end are respectively located on both sides of the electrode in the thickness direction and are arranged opposite to each other. The laser receiving end is used to receive the laser signal emitted by the laser emitting end. When the electrode is misaligned, the controller controls the execution component to execute the command.

[0049] In this coating oven apparatus, the laser receiver receives the laser beam emitted by the laser emitter. When the electrode shifts laterally within the oven, it blocks the laser beam emitted by the laser emitter, preventing the laser receiver from receiving it. This information is then sent to the controller, indicating a lateral shift in the electrode. The controller then instructs the actuator to execute commands. Compared to existing technologies that rely on manual marking to determine electrode shift by visually observing deviations, the laser detection unit can automatically detect electrode shifts in real time within the coating oven. This reduces the workload for operators, eliminates the need for manual judgment, and achieves a higher degree of automation, ensuring optimal electrode drying results.

[0050] This application provides a coating oven for drying electrode sheets. Please refer to [link / reference needed]. Figure 1 , Figure 2 and Figure 3 The coating oven 100 includes an oven 10 and a detection mechanism 20. The oven 10 has a drying zone through which the electrode 200 passes. The detection mechanism 20 is disposed inside the oven 10 and is used to detect whether the electrode 200 in the drying zone is misaligned. The detection mechanism 20 includes a laser detection component 21, an execution component 22, and a controller 23. Both the laser detection component 21 and the execution component 22 are electrically connected to the controller 23. The laser detection component 21 includes a laser emitting end 211 and a laser receiving end 212. The laser emitting end 211 and the laser receiving end 212 are located on both sides of the thickness direction Z of the electrode 200 and are arranged opposite to each other. The laser receiving end 212 is used to receive the laser signal emitted by the laser emitting end 211. When the laser detection component 21 detects that the electrode 200 is misaligned, the controller 23 controls the execution component 22 to execute the command.

[0051] Oven 10 refers to a vacuum drying device that provides drying or desiccation functions for the coated anode and cathode sheets 200. Oven 10 is a box structure that provides drying functions for the electrode sheet strip. A drying assembly is installed inside oven 10, forming a drying zone through which the electrode sheets 200 pass. The drying assembly can dry the electrode sheets 200 within the drying zone. Along the conveying direction Y of the electrode sheets 200, the two sides of oven 10 are the inlet and outlet, respectively. The electrode sheets 200 enter the drying zone from the inlet and exit from the outlet after passing through the drying zone. When the electrode sheets 200 pass through the drying zone, they should be positioned in the center to ensure effective drying.

[0052] The electrode 200 has a first surface and a second surface on both sides of the thickness direction Z. The first surface and the second surface have active material coating layers. Before winding, the surface of the electrode 200 needs to be dried in the coating oven 100 to ensure the drying quality of the electrode 200.

[0053] The detection mechanism 20 is used to detect whether the electrode 200 in the drying zone is misaligned in its width direction X. The execution component 22 can be a prompter. When the electrode 200 is misaligned in its width direction X, the controller 23 can control the prompter to emit beeping sounds such as "beep beep beep," "tap tap tap," or "dudu dudu," prompting the staff to promptly investigate the cause and take corrective measures. Alternatively, the execution component 22 can be a correction mechanism integrated into the coating oven 100. The controller 23 can be electrically connected to the correction mechanism integrated into the coating oven 100. When the laser detection component 21 detects a misalignment of the electrode 200 in its width direction X, the controller 23 can automatically control the correction mechanism to perform correction. The correction mechanism is an adjustment mechanism integrated into the coating oven 100. The innovation of this solution lies mainly in the real-time detection of the electrode 200 misalignment; therefore, the correction mechanism of the coating oven 100 will not be described in detail here.

[0054] The controller 23 is a master control device that controls the starting, speed regulation, braking, and reversing of the motor by changing the wiring of the main circuit or control circuit and changing the resistance value in the circuit according to a predetermined sequence. It consists of a program counter, instruction register, instruction decoder, timing generator, and operation controller 23. It is the "decision-making body" that issues commands, that is, it coordinates and directs the operation of the entire computer system.

[0055] The width direction X of electrode 200 refers to the direction perpendicular to the length direction of electrode 200, which is also perpendicular to the conveying direction Y of electrode 200 in coating oven 100. The length direction of electrode 200 is in the same direction as the conveying direction Y of electrode 200 in coating oven 100.

[0056] Laser transmitter 211 refers to a laser transmitter that can emit laser light. The laser transmitter can emit one or more laser beams. Correspondingly, laser receiver 212 refers to a laser receiver that can receive laser light. The laser receiver can receive one or more laser beams emitted by the laser transmitter, and each laser beam is relatively independent.

[0057] In this solution, a laser detection component 21 is installed inside the oven 10. The laser detection component 21 includes a laser emitter 211 and a laser receiver 212, which are located on opposite sides of the thickness direction Z of the electrode 200. The laser receiver 212 can receive the laser beam emitted by the laser emitter 211. When the electrode 200 shifts laterally inside the oven 10, it blocks the laser beam emitted by the laser emitter 211, causing the laser receiver 212 to be unable to receive the laser beam. This information is then fed back to the controller 23, indicating that the electrode 200 has shifted laterally. The controller 23 can then control the execution component 22 to execute instructions. The execution instructions can be to prompt the operator that the electrode 200 has shifted, allowing the operator to take appropriate measures. Alternatively, the execution component 22 can be a self-correcting mechanism integrated into the coating oven 100. The controller 23 is linked with the correction mechanism to automatically control the correction mechanism to correct the electrode 200. The laser detection component 21 emits and receives laser beams using a laser. Compared to the existing technology that uses manual drawing of lines to mark the electrode 200 and determines whether the electrode 200 has shifted beyond the marked lines, requiring manual visual observation and comparison, the laser detection component 21 can automatically detect whether the electrode 200 has shifted in the coating oven 100 in real time. This reduces the workload of the staff, eliminates the need for manual judgment of whether the electrode 200 has shifted, and has a higher degree of automation, ensuring the drying effect of the electrode 200.

[0058] According to some embodiments of this application, please refer to Figure 1 In the detection mechanism 20, there are two laser detection components 21, which are located on both sides of the width direction X of the electrode 200.

[0059] By setting the number of laser detection components 21 to two, the two laser detection components 21 can simultaneously detect both sides of the electrode 200 in the width direction X. Regardless of whether the electrode 200 shifts to either side in the width direction X, the detection mechanism 20 can detect the shift of the electrode 200.

[0060] Based on some embodiments of this application, please refer to... Figure 1 and Figure 6The laser emitting end 211 has multiple laser emitters, which are distributed along the width direction X of the electrode 200; the laser receiving end 212 includes multiple laser receivers, and the number and position of the laser receivers correspond one-to-one with the position and number of the multiple laser emitters.

[0061] Understandably, such as Figure 6 As shown, multiple laser emitters can simultaneously emit multiple laser beams, and correspondingly, the number and location of laser receivers correspond one-to-one with the location and number of the multiple laser emitters. For example... Figure 1 and Figure 2 As shown in the attached diagram, the dashed lines represent the laser beam emitted by the laser emitter. When the electrode 200 shifts, it blocks a portion of the laser beam emitted by multiple laser emitters, meaning that some of the laser receivers cannot receive the laser beam emitted by the laser emitters. The more laser beams blocked by the electrode 200, the greater the lateral shift of the electrode 200; the fewer laser beams blocked, the smaller the lateral shift of the electrode 200. Since the spacing between two adjacent laser emitters is a fixed or known value, the controller can calculate the shift of the electrode 200 based on the number of laser beams blocked by the electrode 200.

[0062] The laser emitter 211 has multiple laser emitters, which are spaced apart along the width direction X of the electrode 200. The number and position of the laser receivers correspond one-to-one with the position and number of the multiple laser emitters, which can detect the offset of the electrode 200 in its width direction X, making the offset detection of the electrode 200 more accurate and realizing the quantification function of the offset of the electrode 200. This makes it easier for the controller 23 to optimize the control logic and enable the execution unit 22 to execute more appropriate instructions.

[0063] It should be noted that when multiple laser emitters and multiple laser receivers are set up, the offset of the electrode 200 can be quantified. Then the controller 23 can control the execution unit 22 to issue different prompt messages according to the offset of the electrode 200. The execution unit 22 can be in multiple execution modes.

[0064] Optionally, the execution unit 22 includes a prompter. When the laser detection unit 21 detects that the offset of the electrode 200 in its width direction X exceeds a first threshold but does not exceed a second threshold, the controller 23 controls the prompter to issue a first prompting command. When the laser detection unit 21 detects that the offset of the electrode 200 in its width direction X exceeds the second threshold, the controller 23 controls the prompter to issue a second prompting command. The value of the first threshold is smaller than the second threshold.

[0065] The difference between the first and second prompt instructions may lie in the frequency of the prompt tone or the information conveyed by the tone. When the laser detection unit 21 detects that the offset of the electrode 200 in its width direction X exceeds a first threshold but does not exceed a second threshold, the execution unit 22 may emit a "beep beep beep" sound, with an interval of 1 second. Similarly, when the laser detection unit 21 detects that the offset of the electrode 200 in its width direction X exceeds the second threshold, the execution unit 22 may also emit a "beep beep beep" sound, but with an interval shorter than 1 second, such as 0.1 seconds, 0.2 seconds, or 0.3 seconds.

[0066] Alternatively, when the laser detection component 21 detects that the offset of the electrode 200 in the coating oven 100 in its width direction X exceeds a first threshold but does not exceed a second threshold, the execution component 22 may emit a beeping sound. When the laser detection component 21 detects that the offset of the electrode 200 in its width direction X exceeds the second threshold, the execution component 22 may emit a more rapid clicking sound. Of course, the difference between the first and second prompting commands can be set according to the actual situation.

[0067] Optionally, the execution component 22 includes a prompter and a correction mechanism. When the laser detection component 21 detects that the offset of the electrode 200 in its width direction X exceeds a first threshold but does not exceed a second threshold, the controller 23 controls the prompter to issue a first prompt command. When the laser detection component 21 detects that the offset of the electrode 200 in its width direction X exceeds the second threshold, the controller 23 controls the correction mechanism to operate to correct the electrode 200.

[0068] When the offset of electrode 200 in the width direction X exceeds the first threshold but does not exceed the second threshold, the controller 23 can control the indicator to emit a beeping sound, a tapping sound, or a beeping sound, prompting the staff to take timely measures. At this time, the offset of electrode 200 is small, which can serve as an early warning function, making it easier for staff to investigate the cause of electrode 200 deviation and better solve the problem of electrode 200 deviation from the source. When the laser detection component 21 detects that the offset of electrode 200 in its width direction X exceeds the second threshold, the controller 23 is electrically connected to the correction mechanism built into the coating oven 100. The controller 23 can automatically control the correction mechanism to perform automatic correction. At this time, the investigation of the cause of electrode 200 deviation is abandoned. Based on the drying effect of electrode 200, the controller 23 automatically controls the correction mechanism to perform correction to ensure the drying quality of electrode 200.

[0069] According to some embodiments of this application, the detection mechanism 20 further includes two slide rails 24, which are disposed on the inner wall of the oven 10 and located on both sides of the thickness direction Z of the electrode 200, and the slide rails 24 extend along the width direction X of the electrode 200; the two laser emitting ends 211 of the two laser detection components 21 are slidably engaged with one of the two slide rails 24, and the two laser receiving ends 212 of the two laser detection components 21 are slidably engaged with the other of the two slide rails 24.

[0070] The slide rail 24 can be a dovetail-shaped guide rail or a T-shaped guide rail, etc. Two slide rails 24 are respectively located on both sides of the electrode 200 in the thickness direction Z. The slide rails 24 are fixedly connected to the inner wall of the coating oven 100. The slide rail 24 located above the electrode 200 allows the two laser emitting ends 211 of the two laser detection components 21 to slide in cooperation. The slide rail 24 located below the electrode 200 allows the two laser receiving ends 212 of the two laser detection components 21 to slide in cooperation. The sliding of the laser detection components 21 on the slide rails 24 can be manually driven or electrically driven, depending on the actual situation.

[0071] By setting the slide rail 24, the laser emitting end 211 and the laser receiving end 212 in the two laser detection components 21 can slide and cooperate on the slide rail 24, thereby adjusting the position of the two laser detection components 21 in the width direction X on the electrode 200. This can adapt to the offset detection of electrode 200 of different width types, and the detection mechanism 20 has a wider range of applications.

[0072] According to some embodiments of this application, the detection mechanism 20 further includes a driving component 25, which is disposed in the oven 10 and is used to drive the laser detection component 21 to slide along the width direction X of the electrode 200 on the slide rail 24.

[0073] The drive assembly 25 can be a variety of drive mechanisms, such as a cylinder, hydraulic cylinder, electric actuator, or lead screw and nut assembly, etc., which are linear drive mechanisms. The specific structure of the drive assembly 25 can be determined according to the actual situation.

[0074] By setting the drive component 25, the laser detection component 21 can be driven to slide automatically on the slide rail 24, thereby realizing the position adjustment of the laser detection component 21 without manual adjustment. The adjustment of the laser detection component 21 is more convenient and faster, reducing the workload of the staff.

[0075] According to some embodiments of this application, please refer to Figure 1 and Figure 2The drive assembly 25 includes a mounting bracket 251, a first lead screw 252, a nut seat 253, and a first drive member 254. The mounting bracket 251 is mounted on the inner wall of the oven 10. The first lead screw 252 is rotatably mounted on the mounting bracket 251 and extends along the width direction X of the electrode 200. The nut seat 253 is threadedly engaged with the first lead screw 252 and slidably engaged with the slide rail 24. The laser detection component 21 is mounted on the first lead screw 252 through the nut seat 253. The first drive member 254 is mounted on the mounting bracket 251 and is used to drive the first lead screw 252 to rotate around its axis.

[0076] Mounting bracket 251 refers to the frame on which the first lead screw 252 is rotatably mounted. Of course, the guide rail can be mounted on the mounting bracket 251. The first driving component 254 can be a servo motor. The first driving component 254 can drive the first lead screw 252 to rotate forward and backward, thereby realizing the reciprocating position adjustment of the laser detection component 21 on the guide rail.

[0077] By adopting a lead screw and nut pair mechanism for the drive assembly 25, the first lead screw 252 is rotatably mounted on the mounting bracket 251, and the laser detection component 21 is mounted on the first lead screw 252 through the nut seat 253. The nut seat 253 is threadedly engaged with the lead screw and slidably engaged with the slide rail 24. Under the driving action of the first drive member 254, the first lead screw 252 is driven to rotate, thereby driving the laser detection component 21 to move along the extension direction of the first lead screw 252 following the nut seat 253. The movement of the laser detection component 21 is stable and reliable during the position adjustment process, and the position adjustment accuracy of the laser detection component 21 is high.

[0078] According to some embodiments of this application, please refer to Figure 1 There are two first lead screws 252, which are located on both sides of the thickness direction Z of the electrode 200. Each first lead screw 252 is provided with two nut seats 253, and the threads of the two nut seats 253 on the same first lead screw 252 are opposite. The two laser emitting ends 211 of the two laser detection components 21 are respectively installed on one of the two first lead screws 252 through the two nut seats 253, and the two laser receiving ends 212 of the two laser detection components 21 are respectively installed on the other of the two first lead screws 252 through the two nut seats 253.

[0079] The opposite thread direction of the two nut seats 253 means that the internal threads on the two nut seats 253 are in opposite directions. Therefore, during the rotation of the first lead screw 252, the movement directions of the two nut seats 253 will also be opposite, thereby realizing the synchronous movement of the two nut seats 253 towards or away from each other.

[0080] By setting the number of first lead screws 252 to two, the rotation of the first lead screw 252 can simultaneously drive two laser emitters or two laser receivers to move synchronously, which simplifies the structure of the drive mechanism. Only by controlling the synchronous rotation of the two first lead screws 252 can the two laser detection components 21 move towards or away from each other.

[0081] According to some embodiments of this application, the drive assembly 25 further includes a transmission member 255, which is disposed between the first drive member 254 and the two first lead screws 252. The first drive member 254 is used to drive the two first lead screws 252 to rotate synchronously through the transmission member 255, so that the two laser detection components 21 slide towards or away from each other on the slide rail 24 along the width direction X of the electrode 200.

[0082] The transmission component 255 can be a belt drive, chain drive, or gear drive. Gear drive involves the output shaft of the first drive component 254 driving two first lead screws 252 via gears. Belt drive transmits power between the two first lead screws 252 via a belt. For an example of belt drive, please refer to [reference needed]. Figure 1 and Figure 2 The transmission component 255 includes two pulleys 2551 and a synchronous belt 2552. The two pulleys 2551 are respectively mounted on the two first lead screws 252. The synchronous belt 2552 is sleeved on the two pulleys 2551. The driving end of the first driving component 254 is connected to one of the two first lead screws 252. The synchronous belt 2552 plays a transmission role, so that the two first lead screws 252 rotate synchronously.

[0083] With the transmission component 255, only one first drive component 254 is needed. The two first lead screws 252 can be connected as one unit through the first transmission component 255. The first drive component 254 can drive the two first lead screws 252 to rotate synchronously, realizing the function of one first drive component 254 driving the two first lead screws 252 to rotate synchronously. This simplifies the structure of the drive assembly 25 and reduces the cost of the drive assembly 25.

[0084] Based on some embodiments of this application, please refer to... Figure 2 and Figure 5 The detection mechanism 20 also includes two pressure sensors 26. The two pressure sensors 26 are located on both sides of the width direction X of the electrode 200 and on the same side of the thickness direction Z of the electrode 200. The pressure sensors 26 are used to detect the air pressure on both sides of the width direction X of the electrode 200 inside the oven 10.

[0085] Pressure sensor 26 refers to a device or apparatus that can sense pressure signals and convert them into usable output electrical signals according to a certain rule. Pressure sensor 26 can detect the air pressure at that location inside the coating oven 100.

[0086] The hot air blown out by the drying components inside the coating oven 100 has a certain air pressure. Through the setting of pressure sensor 26, the pressure sensor 26 can monitor the pressure of the flowing air in the areas on both sides of the electrode 200 in the width direction X, thus realizing the monitoring of the air pressure inside the coating oven 100. Furthermore, the two pressure sensors 26 are located on both sides of the electrode 200 in the width direction X and on the same side in the thickness direction Z of the electrode 200. When there is a pressure difference monitored by the two pressure sensors 26, it can be known that the air pressure difference is one of the causes of electrode 200 misalignment, making it easier for operators to quickly eliminate the causes of electrode misalignment and better achieve electrode 200 correction.

[0087] According to some embodiments of this application, please refer to Figure 5 Both the laser emitter 211 and the laser receiver 212 are slidably mounted on the slide rail 24 via corresponding brackets 27, and the pressure sensor 26 is mounted on the bracket 27.

[0088] The bracket 27 is the frame on which the laser receiver 212 or the laser transmitter 211 is mounted on the slide rail 24, and the bracket 27 is mounted on the nut seat 253. The bracket 27 can be a frame structure, for example, the bracket 27 can be a rectangular frame structure or a triangular frame structure.

[0089] By setting the pressure sensor 26 on the corresponding bracket 27 of the laser detection component 21, the pressure sensor 26 can move together with the laser detection component 21 to complete the monitoring of the wind pressure on both sides of the electrode 200 in the width direction X.

[0090] According to some embodiments of this application, the number of detection mechanisms 20 is set to multiple groups, and the multiple groups of detection mechanisms 20 are distributed at intervals along the conveying direction Y of the electrode 200.

[0091] The number of testing institutions 20 can be set according to the actual situation. The number of testing institutions 20 can be two, three, or four, etc.

[0092] When the number of testing mechanisms 20 is set to two, the two sets of testing mechanisms 20 can be set in the inlet and outlet areas of the coating oven 100. When the number of testing mechanisms 20 is set to three, the three sets of testing mechanisms 20 can be set in the inlet, outlet and middle positions of the coating oven 100 respectively.

[0093] By setting the number of detection mechanisms 20 to multiple groups, multiple groups of detection mechanisms 20 can perform multi-point measurements on the electrode sheet 200 conveying direction Y inside the coating oven 100, resulting in more detection points and more accurate monitoring of the offset of the electrode sheet 200.

[0094] According to some embodiments of this application, please refer to Figure 4 and Figure 5The coating oven 100 includes a roller unit, which includes a plurality of rollers 30 spaced apart along the conveying direction Y of the electrode 200. The plurality of rollers 30 are used to drive and guide the electrode 200 through the drying zone along its conveying direction Y.

[0095] Idler rollers 30 are important components of belt conveyors. They come in many varieties and are produced in large quantities to support the conveyor belt and the weight of the materials. The function of idler rollers 30 is to carry and transport the electrode sheets 200.

[0096] Multiple idlers 30 in the idler unit provide conveying and guiding functions for the electrode 200, allowing the electrode 200 to pass smoothly through the drying zone.

[0097] This application provides a battery manufacturing apparatus, which includes the coating oven 100 of any of the foregoing embodiments.

[0098] In some embodiments, the coating oven 100 includes an oven 10 and a detection mechanism 20. The oven 10 has a drying zone through which the electrode 200 passes. The detection mechanism 20 is disposed inside the oven 10 and is used to detect whether the electrode 200 in the drying zone is misaligned. The detection mechanism 20 includes a laser detection component 21, an execution component 22, and a controller 23. Both the laser detection component 21 and the execution component 22 are electrically connected to the controller 23. The laser detection component 21 includes a laser emitting end 211 and a laser receiving end 212, which are located on opposite sides of the electrode 200 in the thickness direction Z. The laser receiving end 212 is used to receive the laser signal emitted by the laser emitting end 211. When the electrode 200 is misaligned, the controller 23 controls the execution component 22 to execute a command. In the detection mechanism 20, there are two laser detection components 21, which are located on opposite sides of the electrode 200 in the width direction X. The laser emitting end 211 has multiple laser emitters, which are distributed along the width direction X of the electrode 200; the laser receiving end 212 includes multiple laser receivers, and the number and position of the laser receivers correspond one-to-one with the position and number of the multiple laser emitters.

[0099] The laser receiver 212 can receive the laser beam emitted by the laser emitter 211. When the electrode 200 shifts laterally within the oven 10, it blocks the laser beam emitted by the laser emitter 211, causing the laser receiver 212 to be unable to receive it. This information is then fed back to the controller 23, indicating that the electrode 200 has shifted laterally. The controller 23 can then control the actuator 22 to execute commands. These commands can be notifications to the operator indicating the electrode 200 has shifted, allowing for appropriate action. Alternatively, the actuator 22 can be a web-correcting mechanism integrated into the coating oven 100. The controller 23 can then work in conjunction with the web-correcting mechanism to automatically correct the electrode 200. The laser detection component 21, by emitting and receiving laser beams, offers a significant advantage over existing technologies that rely on manual marking. This differs from methods that rely on visual inspection to determine electrode misalignment when it deviates beyond the marked lines. The laser detection component 21 automatically detects electrode misalignment in real-time within the coating oven 100, reducing workload and eliminating the need for manual inspection. This higher level of automation ensures effective drying of the electrode. Both laser detection components 21 can simultaneously detect both sides of the electrode in the width direction X. Regardless of which side of the electrode deviates in the width direction X, the detection mechanism 20 can detect the misalignment. Multiple laser emitters are distributed at intervals along the width direction X of the electrode 200. The number and position of the laser receivers correspond one-to-one with the position and number of the multiple laser emitters. This allows for the detection of the offset of the electrode 200 in its width direction X, making the offset detection of the electrode 200 more accurate and realizing the quantification function of the offset of the electrode 200. This facilitates the controller 23 to optimize the control logic and better enable the execution unit 22 to execute more appropriate instructions.

[0100] In some embodiments, the detection mechanism 20 further includes two slide rails 24, which are disposed on the inner wall of the oven 10 and located on both sides of the electrode 200 in the thickness direction Z. The slide rails 24 extend along the width direction X of the electrode 200. Two laser emitting ends 211 of the two laser detection components 21 are slidably engaged with one of the two slide rails 24, and two laser receiving ends 212 of the two laser detection components 21 are slidably engaged with the other of the two slide rails 24. The detection mechanism 20 also includes a driving assembly 25, which is disposed in the oven 10 and is used to drive the laser detection components 21 to slide along the slide rails 24 in the width direction X of the electrode 200. The drive assembly 25 includes a mounting bracket 251, a first lead screw 252, a nut seat 253, and a first drive member 254. The mounting bracket 251 is mounted on the inner wall of the oven 10. The first lead screw 252 is rotatably mounted on the mounting bracket 251 and extends along the width direction X of the electrode 200. The nut seat 253 is threadedly engaged with the first lead screw 252 and slidably engaged with the slide rail 24. The laser detection component 21 is mounted on the first lead screw 252 through the nut seat 253. The first drive member 254 is mounted on the mounting bracket 251 and is used to drive the first lead screw 252 to rotate around its axis. There are two first lead screws 252, located on opposite sides of the thickness direction Z of the electrode 200. Each first lead screw 252 has two nut seats 253, with the threads of the two nut seats 253 on the same first lead screw 252 having opposite directions. The two laser emitting ends 211 of the two laser detection components 21 are respectively mounted on one of the two first lead screws 252 via the two nut seats 253, and the two laser receiving ends 212 of the two laser detection components 21 are respectively mounted on the other of the two first lead screws 252 via the two nut seats 253. The drive assembly 25 also includes a transmission component 255, which is disposed between the first drive component 254 and the two first lead screws 252. The first drive component 254 is used to drive the two first lead screws 252 to rotate synchronously through the transmission component 255, so that the two laser detection components 21 slide towards or away from each other on the slide rail 24 along the width direction X of the electrode 200.

[0101] The slide rail 24 allows the laser emitting end 211 and laser receiving end 212 of the two laser detection components 21 to slide and engage on the slide rail 24, thereby adjusting the position of the two laser detection components 21 in the width direction X on the electrode 200. This adapts to the offset detection of electrode 200 of different width types, broadening the applicability of the detection mechanism 20. The drive component 25 can drive the laser detection component 21 to slide automatically on the slide rail 24, thereby realizing the position adjustment of the laser detection component 21 without manual adjustment. This makes the adjustment of the laser detection component 21 more convenient and faster, reducing the workload of the operator. By adopting a lead screw and nut pair mechanism for the drive assembly 25, the first lead screw 252 is rotatably mounted on the mounting bracket 251, and the laser detection component 21 is mounted on the first lead screw 252 via a nut seat 253. The nut seat 253 is threadedly engaged with the lead screw and slidably engaged with the slide rail 24. Under the driving action of the first drive member 254, the first lead screw 252 is driven to rotate, thereby causing the laser detection component 21 to move along the extension direction of the first lead screw 252 following the nut seat 253. The movement of the laser detection component 21 is stable and reliable during the position adjustment process, and the position adjustment accuracy of the laser detection component 21 is high. By setting the number of first lead screws 252 to two, the rotation of the first lead screw 252 can simultaneously drive two laser emitters or two laser receivers to move synchronously, simplifying the structure of the drive mechanism. Only by controlling the synchronous rotation of the two first lead screws 252 is it possible to achieve the opposite or opposite movement of the two laser detection components 21.

[0102] In some embodiments, the detection mechanism 20 further includes two pressure sensors 26, which are located on both sides of the electrode 200 in the width direction X and on the same side in the thickness direction Z of the electrode 200. The pressure sensors 26 are used to detect the air pressure on both sides of the electrode 200 in the width direction X inside the oven 10. The laser emitting end 211 and the laser receiving end 212 are both slidably mounted on the slide rail 24 via corresponding brackets 27, and the pressure sensors 26 are disposed on the brackets 27.

[0103] The hot air blown out by the drying components inside the coating oven 100 has a certain pressure. Through the setting of pressure sensor 26, the pressure sensor 26 can monitor the pressure of the flowing air in the areas on both sides of the electrode 200 in the width direction X, thus realizing the monitoring of the air pressure inside the coating oven 100. Furthermore, the two pressure sensors 26 are located on both sides of the electrode 200 in the width direction X and on the same side in the thickness direction Z of the electrode 200. When there is a pressure difference monitored by the two pressure sensors 26, it can be known that the air pressure difference is one of the causes of electrode 200 deviation, making it easier for operators to quickly eliminate the cause and better correct the electrode 200 deviation. The pressure sensor 26 is set on the corresponding bracket 27 of the laser detection component 21, and the pressure sensor 26 can move together with the laser detection component 21 to complete the monitoring of the air pressure on both sides of the electrode 200 in the width direction X.

[0104] In some embodiments, the number of detection mechanisms 20 is set to multiple groups, and the multiple groups of detection mechanisms 20 are distributed at intervals along the conveying direction Y of the electrode 200. The coating oven 100 includes a roller 30 unit, which includes multiple rollers 30 distributed at intervals along the conveying direction Y of the electrode 200. The multiple rollers 30 are used to drive and guide the electrode 200 through the drying zone along its conveying direction Y.

[0105] Multiple testing units 20 can perform multi-point measurements on the electrode sheet 200 conveying direction Y inside the coating oven 100, with more testing points, making the monitoring of the electrode sheet 200 offset more accurate.

[0106] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0107] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A coating oven for drying counter electrode sheets, characterized in that, include: An oven having a drying zone through which the electrode sheets pass; A detection mechanism, located inside the oven, is used to detect whether the electrode sheets in the drying zone are misaligned. The detection mechanism includes a laser detection component, an execution component, and a controller. The laser detection component and the execution component are both electrically connected to the controller. The laser detection component includes a laser emitting end and a laser receiving end, which are located on opposite sides of the electrode sheet in the thickness direction. The laser receiving end is used to receive the laser signal emitted by the laser emitting end. When the laser detection component detects that the electrode sheet is misaligned, the controller controls the execution component to execute a command.

2. The coating oven as described in claim 1, characterized in that, In the detection mechanism, there are two laser detection components, which are located on both sides of the width direction of the electrode.

3. The coating oven as described in claim 1, characterized in that, The laser emitting end includes multiple laser emitters, which are distributed along the width direction of the electrode; the laser receiving end includes multiple laser receivers, and the number and position of the laser receivers correspond one-to-one with the position and number of the multiple laser emitters.

4. The coating oven as described in claim 2, characterized in that, The testing institution also includes: Two slide rails are provided on the inner wall of the oven and are located on both sides of the electrode sheet in the thickness direction, and the slide rails extend along the width direction of the electrode sheet; Two of the laser emitting ends of the two laser detection components are slidably engaged with one of the two slide rails, and two of the laser receiving ends of the two laser detection components are slidably engaged with the other of the two slide rails.

5. The coating oven as described in claim 4, characterized in that, The testing institution also includes: A driving assembly is disposed in the oven, the driving assembly being used to drive the laser detection component to slide along the width direction of the electrode on the slide rail.

6. The coating oven as described in claim 5, characterized in that, The driving component includes: Mounting rack, installed on the inner wall of the oven; A first lead screw is rotatably mounted on the mounting bracket, and the first lead screw extends along the width direction of the electrode sheet; The nut seat is threaded to the first lead screw and slidably engaged with the slide rail. The laser detection component is mounted on the first lead screw via the nut seat. A first driving member is mounted on the mounting bracket, and the first driving member is used to drive the first lead screw to rotate about its axis.

7. The coating oven as described in claim 6, characterized in that, There are two first lead screws, and the two first lead screws are located on both sides of the thickness direction of the electrode sheet; Each of the first lead screws is provided with two nut seats, and the threads of the two nut seats on the same first lead screw are opposite; the two laser emitting ends of the two laser detection components are respectively mounted on one of the two first lead screws through the two nut seats, and the two laser receiving ends of the two laser detection components are respectively mounted on the other of the two first lead screws through the two nut seats.

8. The coating oven as described in claim 7, characterized in that, The driving component also includes: A transmission component is disposed between the first driving component and the two first lead screws. The first driving component is used to drive the two first lead screws to rotate synchronously through the transmission component, so that the two laser detection components slide towards or away from each other on the slide rail along the width direction of the electrode.

9. The coating oven as described in claim 4, characterized in that, The testing institution also includes: Two pressure sensors are located on opposite sides of the electrode in the width direction and on the same side in the thickness direction of the electrode. The pressure sensors are used to detect the air pressure on both sides of the electrode in the width direction inside the oven.

10. The coating oven as described in claim 9, characterized in that, Both the laser emitter and the laser receiver are slidably mounted on the slide rail via corresponding brackets, and the pressure sensor is mounted on the bracket.

11. The coating oven as described in claim 1, characterized in that, The number of the testing mechanisms is set to multiple groups, and the multiple groups of testing mechanisms are distributed at intervals along the conveying direction of the electrode sheet.

12. The coating oven as described in claim 1, characterized in that, The coating oven includes: The idler unit includes multiple idlers spaced apart along the conveying direction of the electrode sheet, the multiple idlers being used to drive and guide the electrode sheet through the drying zone along its conveying direction.

13. A battery manufacturing apparatus, characterized in that, Includes a coating oven according to any one of claims 1-12.

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