Pole piece rejection device and battery production system

Abstract

The application provides a tab scrap device and a battery production system. The tab scrap device comprises a guide and a driving mechanism. The driving mechanism is connected with the guide and is used for driving the guide to switch between a first position and a second position. In the first position, the guide is located on a tab transmission path. In the second position, the guide is located outside the tab transmission path. When the tab has a defect, the driving mechanism drives the guide to move to the first position. The guide is located on the tab transmission path. With the transmission of the tab, the tab contacts the guide and moves along the guide, so as to be separated from the transmission path. When the tab is normal, the driving mechanism drives the guide to move to the second position, so that the guide is not on the transmission path of the guide and does not affect the transmission of the tab. The guide removes the defective tab, so as to ensure the quality of the formed laminated battery cell.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to an electrode rejection device and a battery production system. Background Technology

[0002] A laminated battery cell mainly consists of positive electrode, negative electrode, separator, tabs and casing, etc., and each part works together to realize the energy storage and release function of the battery.

[0003] In the manufacturing process of laminated battery cells, materials such as positive electrode sheets, separators, and negative electrode sheets need to be stacked in a specific structure, and operations such as tab connection and encapsulation need to be completed. In the early stages of production, the electrode sheets may have defects such as yellow labels, wavy edges, poor tab spacing, and broken tabs. Defective electrode sheets can lead to safety hazards in battery performance. Utility Model Content

[0004] The embodiments of this utility model provide an electrode rejection device and a battery production system, which can improve the technical problem that the battery has safety hazards due to defective electrodes in the stacked cells.

[0005] In a first aspect, embodiments of the present invention provide an electrode rejection device, comprising: a guide member; A drive mechanism is connected to the guide member, and the drive mechanism is used to drive the guide member to switch between a first position and a second position; In the first position, the guide is located on the electrode transport path; in the second position, the guide is located outside the electrode transport path. When the electrode has defects, the drive mechanism drives the guide to move to the first position, where the guide is on the electrode transport path. As the electrode is transported, it contacts the guide and moves along it, thus detaching from the transport path. When the electrode is normal, the drive mechanism drives the guide to move to the second position, so that it is no longer on the guide's transport path and does not affect the electrode transport. The guide removes defective electrodes, ensuring the quality of the stacked battery cells.

[0006] In some embodiments, a waste bin is also included, which is disposed below the electrode conveying path and opposite to the guide member at the first position. The waste bin is used to collect electrodes rejected by the guide member. By placing the waste bin below the guide member and the conveying path at the first position, an efficient defective electrode collection channel is constructed. After rejection, the electrodes can fall into the waste bin by gravity and the guidance of the conductive component, avoiding the tedious operation of manual collection and greatly improving the automation level and smooth operation of the production system. At the same time, the unified collection of waste bins avoids the production environment cluttered by defective electrodes, reduces the risk of equipment failure caused by waste accumulation, and effectively ensures the stable operation of the production equipment.

[0007] In some embodiments, the waste bin has an opening at the top, and a first detection unit is provided inside the waste bin, positioned close to the opening. The first detection unit is used to detect whether the electrode sheet has completely fallen into the waste bin. The first detection unit can capture the falling trajectory and final position of the electrode sheet in real time, accurately determining whether the electrode sheet has completely fallen into the bin, effectively avoiding problems such as equipment jamming and transmission line blockage caused by defective electrode sheets remaining in the bin.

[0008] In some embodiments, an alarm and a controller are further included. The first detection unit and the alarm are respectively connected to the controller, which is configured to: control the alarm to sound when the first detection unit detects that the electrode sheet has not completely fallen into the waste bin. When the first detection device detects that the electrode sheet has not completely fallen into the waste bin, the controller controls the alarm to issue an alarm message, and the staff can respond according to the alarm message, resulting in a high degree of automation. Preventive monitoring reduces the risk of production interruption, avoids material loss and increased equipment maintenance costs caused by incomplete electrode sheet removal, ensures the continuity and stability of the production line, and helps achieve lean production goals.

[0009] In some embodiments, an air blowing mechanism is further included, which is connected to the guide member. The air blowing port of the air blowing mechanism is configured to blow air onto the electrode to change the transmission path of the electrode. When the electrode contacts the guide member, the air blowing mechanism blows air onto the electrode to generate an aerodynamic torque. The synergistic effect of the aerodynamic torque and the surface of the guide member guides the electrode to be removed along a preset trajectory.

[0010] In some embodiments, the driving mechanism includes a driving component and a connecting shaft. The output end of the driving component is connected to the connecting shaft, and the guide component is mounted on the connecting shaft. The driving component drives the connecting shaft to extend and retract the guide component. The driving component is linked to the guide component via the connecting shaft. This linear connection structure between the driving component and the connecting shaft reduces the transmission chain, minimizes power loss, effectively improves power transmission efficiency, and ensures that the guide component's extension and retraction actions are responsive, stable, and reliable.

[0011] In some embodiments, the air blowing mechanism includes a sleeve fitted onto the connecting shaft, forming a sealed space with the connecting shaft. The sleeve has an air inlet and an air blowing outlet, which communicate with the sealed space. A guide member is mounted on the sleeve. The sleeve fitted onto the connecting shaft to form a sealed space achieves a high degree of integration of driving and air blowing functions, reducing the space occupied by the device.

[0012] In some embodiments, the sleeve has a circular cross-sectional shape, the guide is a flat plate, the guide is tangentially connected to the sleeve, and the air inlet is located on the side of the guide closer to the sleeve. The tangential arrangement of the guide and sleeve facilitates the placement of the air inlet and optimizes the blowing effect.

[0013] In some embodiments, the system further includes a second detection unit and a controller. The second detection unit and the drive mechanism are respectively connected to the controller. The second detection unit is used to detect defect information of the electrode sheet. The controller is configured to control the drive mechanism to switch the guide member between the first position and the second position based on the defect information detected by the second detection unit. The second detection unit automatically detects defect information of the electrode sheet, which improves screening efficiency and reduces the missed detection rate of defective electrode sheets compared to manual intervention. The second detection unit, drive mechanism, and controller form an intelligent control system with a high degree of automation, improving defect handling efficiency.

[0014] Secondly, embodiments of this utility model provide a battery production system, including the electrode rejection device described in any one of the above-mentioned claims.

[0015] In some embodiments, the device includes an electrode conveying mechanism and a guide roller, with the electrode rejection device located between the electrode conveying mechanism and the guide roller. Positioning the electrode rejection device near the thermal bonding process allows for the timely removal of defective electrodes with surface wrinkles, uneven coatings, and other defects before they enter the thermal bonding process. This prevents waste material from adhering and contaminating equipment due to defective electrodes entering the high-temperature, high-pressure environment, reducing the frequency of thermal bonding mold cleaning and maintenance costs. Furthermore, the proximity to the thermal bonding process shortens the transmission distance between the electrode rejection device and subsequent processes, optimizing the production line layout.

[0016] In some embodiments, the device further includes an electrode cutting mechanism disposed on the side of the electrode conveying mechanism opposite to the guide roller. The electrode rejection device also includes a second detection unit for detecting defect information of the electrode. Along the electrode conveying path, the first detection unit is disposed on the side of the electrode cutting mechanism away from the electrode conveying mechanism. By placing the second detection unit in front of the electrode cutting mechanism, the specific cutting position can be determined according to the specific location of the defect. When the defect spans multiple electrodes, multiple electrodes can be cut at once, reducing the number of cutting operations and improving production efficiency.

[0017] In some embodiments, the distance between the electrode transfer mechanism and the guide roller is less than the length of one electrode. After defective electrodes are removed, subsequent electrodes can smoothly enter the guide roller, ensuring the continuity of the production line.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention providing an electrode waste rejection device; Figure 2 This is a top view of the electrode rejection device provided in an embodiment of this utility model; Figure 3 This is a schematic diagram of a battery production system; Figure 4 This is a system block diagram of the electrode rejection device provided in an embodiment of the present invention.

[0021] The labels in the attached diagram are: 100. Electrode rejection device; 110. Guide component; 120. Drive mechanism; 121. Drive component; 122. Connecting shaft; 140. Air blowing mechanism; 141. Sleeve; 142. Air inlet; 143. Air blowing port; 150. First detection unit; 160. Second detection unit; 170. Controller; 180. Waste bin; 181. Opening; 190. Alarm; 200. Electrode transmission mechanism; 300. Guide roller; 400. Electrode cutting mechanism. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0023] In related technologies, laminated battery cells include positive electrode sheets, negative electrode sheets, and a separator, with the positive and negative electrode sheets respectively disposed on both sides of the separator. Along the thickness direction of the laminated battery cell, the positive and negative electrode sheets are alternately arranged. The production line for laminated battery cells is centered on the hot-pressing bonding of the electrode sheets and the separator. This production line includes a material unwinding mechanism, an electrode sheet conveying mechanism 200, a cutting mechanism, a guide roller 300, and a hot-pressing bonding mechanism. The material unwinding mechanism includes a positive electrode unwinding mechanism, a negative electrode unwinding mechanism, and a separator unwinding mechanism. The positive electrode cutting mechanism is used to cut the continuous positive electrode strip drawn from the positive electrode unwinding mechanism into individual positive electrode sheets. The negative electrode cutting mechanism is used to cut the continuous negative electrode strip drawn from the negative electrode strip into individual negative electrode sheets. The cut positive and negative electrode sheets, along with the separator drawn from the separator unwinding mechanism, flow through the guide roller 300 to the hot-pressing bonding mechanism, where the separator is hot-pressed onto the positive electrode sheet, or vice versa.

[0024] See Figure 1 and Figure 2 This utility model provides an electrode rejection device 100, which can be used to reject negative or positive electrode sheets. The electrode rejection device 100 includes a guide member 110 and a driving mechanism 120. The driving mechanism 120 is connected to the guide member 110 and is used to drive the guide member 110 to switch between a first position and a second position. In the first position, the guide member 110 is located on the electrode conveying path; in the second position, the guide member 110 is located outside the electrode conveying path.

[0025] In this application, an electrode rejection device 100 is installed on the production line. When an electrode has a defect, the drive mechanism 120 drives the guide 110 to move to a first position. The guide 110 is located on the electrode transport path. As the electrode is transported, it contacts the guide 110 and moves along it, thus detaching from the transport path and removing the defective electrode. When the electrode is normal, the drive mechanism 120 drives the guide 110 to move to a second position, so that it is no longer on the transport path of the guide 110 and will not affect the electrode transport. By removing defective electrodes through the guide 110, the quality of the stacked battery cells is ensured.

[0026] In some embodiments, see Figure 1 and Figure 2 It also includes a waste bin 180, which can be a hollow cubic box with one end open 181. The waste bin 180 is located below the electrode conveying path and is positioned opposite to the guide member 110 at the first position. The waste bin 180 is used to collect the electrodes rejected by the guide member 110.

[0027] In this embodiment, by placing the waste bin 180 below the guide member 110 and the transmission path in the first position, a highly efficient defective electrode collection channel is constructed. After the electrode is rejected, it can fall into the waste bin 180 by gravity and the guidance of the conductive member, avoiding the tedious operation of manual collection and greatly improving the automation level and smooth operation of the production system. At the same time, the unified collection of the waste bin 180 avoids the production environment from being cluttered due to the scattering of defective electrodes, reduces the risk of equipment failure caused by waste accumulation, and effectively ensures the stable operation of the production equipment.

[0028] In addition, the waste collected in the waste bin 180 is convenient for subsequent unified analysis and processing. Production personnel can quickly locate problems in the production process through centralized detection of waste, optimize production processes, reduce resource waste, and further improve the yield and production efficiency of electrode production, thereby reducing costs and increasing efficiency.

[0029] In some embodiments, see Figure 1 and Figure 2The waste bin 180 has an opening 181 at its top. A first detection unit 150 is located inside the waste bin 180, positioned near the opening 181. The first detection unit 150 is used to detect whether the electrode has completely fallen into the waste bin 180. The first detection unit 150 is a through-beam sensor. The through-beam sensor includes a transmitter and a receiver, with the transmitter and receiver positioned opposite each other. The transmitter emits a beam of light, which can be visible light, infrared light, or a laser beam. The beam travels in a straight line to the receiver opposite it. In the absence of any obstruction, the receiver can receive the complete light signal. When the electrode has completely fallen into the waste bin 180, the receiver can receive the complete light signal; when the electrode has not completely fallen into the waste bin 180, the beam hits the electrode, and the receiver cannot receive the complete light signal.

[0030] In this embodiment, the first detection unit 150 is configured to capture the falling trajectory and final position of the electrode sheet in real time, accurately determine whether the electrode sheet has completely fallen into the box, and effectively avoid problems such as equipment jamming and transmission line blockage caused by defective electrode sheets being retained.

[0031] In some embodiments, see Figure 4 The system includes an alarm 190 and a controller 170. The first detection unit 150 and the alarm 190 are respectively connected to the controller 170. The controller 170 is configured to trigger the alarm 190 when the first detection unit 150 detects that the electrode sheet has not completely fallen into the waste bin 180. The alarm 190 can be an audible and visual alarm, which is located outside the waste bin 180. When the first detection unit 150 detects that the electrode sheet has not completely fallen into the waste bin 180, the controller 170 activates the audible and visual alarm 190 based on this information, issuing an alarm signal. Based on this alarm signal, the operator manually cleans the defective electrode sheet and further cleans the waste bin 180 when it is found to be full.

[0032] In the embodiments of this application, when the first detection device detects that the electrode sheet has not completely entered the waste bin 180, the controller 170 activates the alarm 190 to issue an alarm. Workers can respond quickly based on the alarm information, improving the level of automation. Through preventative monitoring, the risk of production interruptions is effectively reduced, avoiding material losses and increased equipment maintenance costs caused by incomplete electrode sheet removal. This system ensures the continuity and stability of the production line, contributing to the achievement of lean production goals.

[0033] In some embodiments, the waste bin 180 is equipped with casters at its bottom, enabling easy movement. The caster design ensures smooth sliding of the waste bin 180 under various ground conditions, reducing friction and resistance during handling. This design not only improves the moving efficiency of the waste bin 180 but also reduces the physical exertion of the operator. Furthermore, the wear resistance and durability of the casters make them suitable for long-term use, ensuring the stability and safety of the waste bin 180 during frequent movements.

[0034] In some embodiments, the waste bin 180 is equipped with handles on both sides, allowing users to easily move waste. These handles are ergonomically designed to ensure a comfortable grip during handling. Whether moving the waste bin 180 from one location to another or adjusting it while emptying waste, these handles provide convenience and flexibility. Furthermore, the bin material is optimized to ensure durability and corrosion resistance, making the waste bin 180 suitable for various environments. This design allows users to handle waste more efficiently and effortlessly.

[0035] In some embodiments, see Figure 1 and Figure 2 It also includes an air blowing mechanism 140, which is connected to the guide member 110. The air blowing mechanism 140 is provided with an air blowing port 143. Specifically, the air blowing port 143 can be a long strip-shaped air blowing port 143, or multiple air blowing holes arranged at certain intervals. The air blowing port 143 extends along the width direction of the electrode, ensuring that the gas covers a larger area on the electrode, thereby improving the blowing effect. By adjusting the shape and arrangement of the air blowing port 143, more flexible airflow control can be achieved according to different needs.

[0036] In this embodiment, the air inlet 143 is specifically designed to blow air onto the electrode, thereby altering its transport path. When the electrode contacts the guide 110, the air blowing mechanism 140 blows air onto the electrode, generating an aerodynamic torque. This aerodynamic torque, in conjunction with the surface of the guide 110, guides the electrode along a preset trajectory for rejection.

[0037] In this embodiment, the air blowing mechanism 140 is designed to improve the accuracy and efficiency of the electrode transfer process, ensuring that the electrode can be transferred and processed along a predetermined path. This design not only reduces wear on mechanical parts but also improves the overall efficiency of the production line. Furthermore, the air blowing mechanism 140 can be adjusted according to different electrode materials and thicknesses to adapt to various production needs, enhancing the system's flexibility and adaptability. In this way, this application provides a more reliable and efficient electrode transfer solution.

[0038] In some embodiments, see Figure 1 and Figure 2 The drive mechanism 120 includes a drive element 121 and a connecting shaft 122, wherein the output end of the drive element 121 is connected to the connecting shaft 122. The drive element 121 is a cylinder. A guide element 110 is mounted on the connecting shaft 122, and the drive element 121 drives the guide element 110 to perform telescopic movement via the connecting shaft 122. The drive element 121 and the connecting shaft 122 adopt a linear connection structure. This design significantly reduces the complexity of the transmission chain, thereby reducing the potential for power loss. Power transmission efficiency is effectively improved, ensuring that the guide element 110 can respond quickly, stably, and reliably during telescopic movement. In addition, the design of the drive element 121 and the connecting shaft 122 also considers shock absorption and wear resistance characteristics to further improve the overall durability and long-term performance of the system.

[0039] In some embodiments, see Figure 1 and 2 The air blowing mechanism 140 includes a sleeve 141, which is cleverly fitted onto the connecting shaft 122, thereby forming a sealed space between the sleeve 141 and the connecting shaft 122. The sleeve 141 is designed to balance functionality and space efficiency, featuring an air inlet 142 and an air outlet 143 for gas input and output, respectively. The air inlet 142 connects to an external compressor. The air inlet 142 and air outlet 143 are positioned opposite each other to optimize airflow path and efficiency, allowing gas to flow smoothly through the sealed space. A guide 110 is mounted on the sleeve 141 to ensure the stability and directionality of gas flow. Furthermore, the fitting method of the sleeve 141 not only facilitates the formation of the sealed space but also achieves a high degree of integration between the driving and blowing functions. This design significantly reduces the space occupied by the equipment, providing an efficient and compact solution suitable for complex mechanical systems used in confined spaces.

[0040] In some embodiments, see Figure 1 and Figure 2 The sleeve 141 has a circular cross-sectional shape, and the guide 110 is a flat plate. The guide 110 is tangentially connected to the sleeve 141, and the air outlet 143 is located on the side of the guide 110 closer to the sleeve 141. Along the axial direction of the sleeve 141, the length of the sleeve 141 is the same as the width of the flat plate of the guide 110, and the width of the guide 110 is slightly wider than the width of the electrode. The tangential arrangement of the guide 110 and the sleeve 141 facilitates the placement of the air outlet 143 and optimizes the air blowing effect.

[0041] The sleeve 141 has a circular cross-sectional shape, which facilitates smooth fluid flow. The guide 110 adopts a flat plate structure and is cleverly connected tangentially to the sleeve 141. This connection method not only simplifies the structural design but also improves overall stability. The air outlet 143 is cleverly positioned on the side of the guide 110 near the sleeve 141, allowing for effective airflow discharge. Along the axial direction of the sleeve 141, its length is precisely designed to match the width of the flat plate of the guide 110, ensuring structural harmony and maximizing functionality. The width of the guide 110 is optimized, slightly wider than the electrode width, providing additional support and stability. The tangential arrangement of the guide 110 and sleeve 141 is very convenient, facilitating the rational layout of the air outlet 143, thereby optimizing the air blowing effect and ensuring efficient airflow discharge and distribution. This design not only improves the equipment's working efficiency but also enhances its applicability and reliability, exhibiting excellent performance during application. Through this innovative structural design, the equipment can maintain stable performance and efficient operation in a variety of complex working environments.

[0042] In some embodiments, see Figure 3 and Figure 4 The electrode rejection device also includes a second detection unit 160 and a controller 170. The second detection unit 160 and the drive mechanism 120 are respectively connected to the controller 170. In particular, the second detection unit 160 is responsible for detecting defect information on the electrode. The second detection unit 160 uses a CCD camera. The controller 170 is configured to control the drive mechanism 120 to drive the guide member 110 to switch between a first position and a second position based on the defect information detected by the second detection unit 160.

[0043] In this embodiment, by automatically detecting defects on the electrode sheets, the reliance on manual intervention is reduced, thereby significantly improving screening efficiency and effectively reducing the missed detection rate of defective electrode sheets. The second detection unit 160, together with the drive mechanism 120 and the controller 170, constitutes a highly automated intelligent control system. This system not only improves defect handling efficiency but also optimizes the production process, further enhancing the reliability and stability of the entire system.

[0044] Furthermore, the second detection unit 160 employs advanced sensing technology, enabling precise identification of minute defects on the electrode surface, including but not limited to cracks, spots, and surface unevenness. This high-precision detection capability ensures that the electrode quality meets stringent production standards. The controller 170 analyzes the detected defect information through complex algorithms and adjusts the operation of the drive mechanism 120 in a timely manner to ensure that the guide 110 effectively handles defects at the appropriate location. The system's automation level not only improves production line efficiency but also reduces human error and lowers production costs.

[0045] Secondly, embodiments of this utility model provide a battery production system, including the electrode rejection device 100 described above. It has the same technical effects as the electrode rejection device 100 described above, and will not be repeated here.

[0046] In some embodiments, see Figure 3 The battery production system also includes an electrode transfer mechanism 200 and a guide roller 300, with an electrode rejection device 100 located between the electrode transfer mechanism 200 and the guide roller 300. Positioning the electrode rejection device 100 near the hot-compositing process allows for the timely removal of defective electrodes with surface wrinkles, uneven coatings, and other defects before they enter the hot-compositing process. This prevents defective electrodes from entering the high-temperature, high-pressure environment, which could lead to waste adhesion and equipment contamination, and reduces the frequency of hot-compositing mold cleaning and maintenance costs. Furthermore, its proximity to the hot-compositing process shortens the transfer distance between the electrode rejection device 100 and subsequent processes, optimizing the production line layout.

[0047] In some embodiments, see Figure 3 The battery production system also includes an electrode cutting mechanism 400, which is located on the side of the electrode conveying mechanism 200 away from the guide roller 300. The electrode rejection device 100 also includes a second detection unit 160, which is used to detect defect information of the electrode. Along the electrode conveying path, a first detection unit 150 is located on the side of the electrode cutting mechanism 400 away from the electrode conveying mechanism 200. By placing the second detection unit 160 in front of the electrode cutting mechanism, the specific cutting position can be determined according to the specific location of the defect. When the defect spans multiple electrodes, multiple electrodes can be cut at once, reducing the number of cutting operations and improving production efficiency.

[0048] In some embodiments, see Figure 3 The distance between the electrode conveying mechanism 200 and the guide roller 300 is less than the length of one electrode. Specifically, the distance between the electrode conveying mechanism 200 and the guide roller 300 refers to the distance between the section of the electrode conveying mechanism 200 closest to the guide roller 300 and the center of the guide roller 300. This design effectively ensures that after defective electrodes are rejected, subsequent normal electrodes can smoothly enter the guide roller 300. This guarantees a smooth and unobstructed conveying process, thereby maintaining continuous operation of the production line and reducing downtime or production interruptions caused by defective electrodes.

[0049] In some implementations, the guide 110 forms a certain angle with the plane containing the electrode. The end of the guide 110 closer to the drive mechanism 120 is farther from the guide roller 300 than the other end. This arrangement can effectively control the movement path of the electrode, ensuring its stability during production. Simultaneously, it can reduce friction and wear, extend the service life of the equipment, and improve production efficiency.

[0050] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0051] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0052] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A electrode rejection device (100), characterized in that, include: Guide component (110); A drive mechanism (120) is connected to the guide member (110) and the drive mechanism (120) is used to drive the guide member (110) to switch between a first position and a second position; In the first position, the guide (110) is located on the electrode transmission path; in the second position, the guide (110) is located outside the electrode transmission path.

2. The electrode rejection device (100) according to claim 1, characterized in that, It also includes a waste bin (180), which is disposed below the electrode transport path and opposite to the guide (110) at the first position. The waste bin (180) is used to collect the electrodes rejected by the guide (110).

3. The electrode rejection device (100) according to claim 2, characterized in that, The waste bin (180) has an opening (181) at the top and a first detection unit (150) inside the waste bin (180). The first detection unit (150) is located near the opening (181) and is used to detect whether the electrode sheet has completely fallen into the waste bin (180).

4. The electrode rejection device (100) according to claim 3, characterized in that, It also includes an alarm (190) and a controller (170), wherein the first detection unit (150) and the alarm (190) are respectively connected to the controller (170), and the controller (170) is configured to: If the first detection unit (150) detects that the electrode sheet has not completely fallen into the waste bin (180), the alarm (190) is activated.

5. The electrode rejection device (100) according to claim 1, characterized in that, It also includes an air blowing mechanism (140) connected to the guide (110), and the air blowing port (143) of the air blowing mechanism (140) is configured to blow air onto the electrode to change the transmission path of the electrode.

6. The electrode rejection device (100) according to claim 5, characterized in that, The drive mechanism (120) includes a drive member (121) and a connecting shaft (122). The output end of the drive member (121) is connected to the connecting shaft (122). The guide member (110) is mounted on the connecting shaft (122). The drive member (121) is used to drive the connecting shaft (122) to extend and retract the guide member (110).

7. The electrode rejection device (100) according to claim 6, characterized in that, The air blowing mechanism (140) includes a sleeve (141) which is sleeved on the connecting shaft (122). The sleeve (141) and the connecting shaft (122) form a sealed space. The sleeve (141) is provided with an air inlet (142) and an air blowing port (143). The air inlet (142) and the air blowing port (143) are connected to the sealed space. The guide (110) is installed on the sleeve (141).

8. The electrode rejection device (100) according to claim 7, characterized in that, The sleeve (141) has a circular cross-sectional shape, the guide (110) is a flat plate, the guide (110) is tangentially connected to the sleeve (141), and the air inlet (143) is located on the side of the guide (110) close to the sleeve (141).

9. The electrode rejection device (100) according to claim 8, characterized in that, It also includes a second detection unit (160) and a controller (170), wherein the second detection unit (160) and the drive mechanism (120) are respectively connected to the controller (170), wherein, The second detection unit (160) is used to detect the defect information of the electrode sheet; The controller (170) is configured to control the drive mechanism (120) to drive the guide (110) to switch between the first position and the second position based on the defect information of the electrode detected by the second detection unit (160).

10. A battery production system, characterized in that, Includes the electrode rejection device (100) as described in any one of claims 1 to 9.

11. The battery production system according to claim 10, characterized in that, It includes an electrode transfer mechanism (200) and a guide roller (300), and the electrode rejection device (100) is located between the electrode transfer mechanism (200) and the guide roller (300).

12. The battery production system according to claim 11, characterized in that, It also includes an electrode cutting mechanism (400), which is disposed on the side of the electrode conveying mechanism (200) away from the guide roller (300). The electrode rejection device (100) also includes a second detection unit (160), which is used to detect the defect information of the electrode. Along the conveying path of the electrode, the first detection unit (150) is disposed on the side of the electrode cutting mechanism (400) away from the electrode conveying mechanism (200).

13. The battery production system according to claim 11, characterized in that, The distance between the electrode transfer mechanism (200) and the guide roller (300) is less than the length of one electrode.

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