Dust removal system and battery production line

Abstract

The application discloses a dust removal system and a battery production line, wherein the dust removal system comprises a material incoming dust removal unit, a feeding transportation carrier dust removal unit, a feeding dust removal unit, a welding middle dust removal unit, a post-welding discharging dust removal unit and a discharging carrier dust removal unit. Through the material incoming dust removal unit, dust removal is performed on the jelly-roll winding process and the rubbed flat process of the wound battery cell; through the feeding transportation carrier dust removal unit, dust removal is performed on the transportation carrier; through the feeding dust removal unit, dust removal is performed on the transportation logistics line and the battery cell and the current collector plate; through the welding middle dust removal unit, dust removal is performed on the current collector plate and the battery cell in the welding process; through the post-welding discharging dust removal unit, dust removal is performed on the welded battery cell; and through the discharging carrier dust removal unit, dust removal is performed on the transportation carrier on the reflow logistics line, so that comprehensive dust removal can be realized on the current collector plate and the battery cell in the welding process, the dust removal efficiency is effectively improved, and the product quality after welding is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a dust removal system and a battery production line. Background Art

[0002] The battery cell is the most important component of the battery. It undergoes a series of processes, including mechanical / ultrasonic flattening, encapsulation, casing, collector plate welding, and sealing welding, before it can be assembled into a finished battery. During the welding process, the battery cell requires dust removal equipment to ensure battery quality.

[0003] The dust removal equipment in the related art has poor dust removal effect when in use. Summary of the Invention

[0004] In view of the above problems, the present application provides a dust removal system and a battery production line, which can solve the problem of poor dust removal effect of existing dust removal equipment when in use.

[0005] To solve the above technical problems, in the first aspect, the present application proposes a dust removal system, comprising:

[0006] An incoming material dust removal unit, configured to remove dust during the electrode winding process and to remove dust during the flattening process of the wound battery cells;

[0007] A loading and transporting carrier dust removal unit, the loading and transporting carrier dust removal unit is located downstream of the incoming material dust removal unit along the battery cell conveying direction, and the loading and transporting carrier dust removal unit is configured to remove dust from the transport carrier;

[0008] A loading dust removal unit, located downstream of the loading transport carrier dust removal unit along the battery cell conveying direction, and configured to remove dust from the transport logistics line, as well as from the battery cells and the collecting tray;

[0009] a welding dust removal unit, the welding dust removal unit being located downstream of the feeding dust removal unit along the battery cell conveying direction, the welding dust removal unit being configured to remove dust from the collecting plate and the battery cells during the welding process;

[0010] a post-weld material removal dust removal unit, the post-weld material removal dust removal unit being located downstream of the welding dust removal unit along the battery cell conveying direction, the post-weld material removal dust removal unit being configured to remove dust from the battery cells after welding;

[0011] The unloading carrier dust removal unit is configured to remove dust from the transport carrier on the return flow line.

[0012] In the technical solution of the embodiment of the present application, the incoming material dust removal unit is used to remove dust from the electrode winding process and the battery cells after winding are dusted during the flattening process; the loading and transport carrier dust removal unit is used to remove dust from the transport carrier; the loading and transport carrier dust removal unit is used to remove dust from the transport logistics line and the battery cells and current collecting plates; the welding dust removal unit is used to remove dust from the current collecting plates and battery cells during the welding process; the post-welding dust removal unit is used to remove dust from the battery cells after welding; the unloading carrier dust removal unit is used to remove dust from the transport carrier on the return logistics line, thereby achieving comprehensive dust removal of the current collecting plates and battery cells during the welding process, effectively improving the dust removal efficiency, and thereby improving the quality of the product after welding.

[0013] In some embodiments, the loading dust removal unit includes a fourth dust collecting member disposed on the bottom surface of the transport logistics line and configured to remove debris from gaps in the transport logistics line, thereby facilitating dust removal on the transport logistics line.

[0014] In some embodiments, the loading dust removal unit further includes a fifth dust collecting member disposed on the bottom surface of the transport logistics line and configured to electrostatically absorb debris on the transport logistics line. In this way, the electrostatic absorption function absorbs fine particles remaining on the surface of the transport logistics line.

[0015] In some embodiments, the transport logistics line includes a rotating roller coated with an adsorption layer. Thus, the adsorption layer can conveniently absorb dust from the bottom surface of the transport carrier on the transport logistics line, preventing the dust from the bottom surface of the transport carrier from falling onto the battery cells and current collecting trays on the transport carrier.

[0016] In some embodiments, the transport logistics line further comprises a cleaning roller, wherein the cleaning roller contacts the rotating roller and is configured to clean the rotating roller, thereby facilitating cleaning of the corresponding rotating roller.

[0017] In some embodiments, the cleaning roller comprises a roller body and an adhesive layer, wherein the adhesive layer is wrapped around the surface of the roller body. In this way, the dust on the rotating roller can be adhered by the adhesive layer, thereby achieving cleaning of the rotating roller.

[0018] In some embodiments, the cleaning roller comprises a roller body and multiple adhesive layers, wherein two adjacent adhesive layers are bonded together, and one adhesive layer is wrapped around the surface of the roller body. In this way, when the outermost adhesive layer is heavily clinging to dust, the outermost adhesive layer can be torn off and the next adhesive layer can be used to continue cleaning.

[0019] In some embodiments, the feeding dedusting unit further comprises a sixth suction device, which is arranged on the transportation logistics line and configured to dedust the battery cell and the current collector plate. In this way, the sixth suction device can further dedust the battery cell and the current collector plate on the transportation logistics line.

[0020] In some embodiments, the incoming material dedusting unit comprises a plurality of first suction devices, which are distributed along the winding direction of the pole piece. In this way, the plurality of first suction devices can respectively dedust the pole piece at the die-cutting station, the feeding station and the winding needle station during the winding process, effectively improving the dedusting effect.

[0021] In some embodiments, the incoming material dedusting unit further comprises a rotating member and a second suction device, wherein the rotating member is connected with the second suction device, and the second suction device is located at the end face of the battery cell during the flattening. In this way, the second suction device is rotated by the rotating member, and the second suction device rotates and dedusts the flattened end face, so that the particles on the flattened end face can be dedusted.

[0022] In some embodiments, the feeding transportation carrier dedusting unit comprises a first mechanical arm and a third suction device, wherein the first mechanical arm is configured to invert the transportation carrier, and the third suction device is configured to dedust the transportation carrier. In this way, the transportation carrier can be inverted and dedusted to clean the transportation carrier.

[0023] In some embodiments, the feeding transportation carrier dedusting unit further comprises a detection member arranged on the first mechanical arm and configured to detect the cleanliness of the transportation carrier. In this way, the cleanliness of the transportation carrier can be detected to determine whether the transportation carrier is clean.

[0024] In some embodiments, the welding dedusting unit comprises a seventh suction device configured to dedust the current collector plate and the battery cell during the welding process. In this way, the seventh suction device can dedust the welding dross, welding fume and the like generated during the welding process.

[0025] In some embodiments, the post-welding discharging dedusting unit comprises a second mechanical arm, a vibrator and a first cleaning brush, wherein the vibrator is arranged on the first cleaning brush, and the first cleaning brush is arranged on the second mechanical arm.

[0026] In this way, the first cleaning brush can be moved by the second mechanical arm to clean the particles generated after welding. Meanwhile, the first cleaning brush is vibrated synchronously by the vibrator during the cleaning process of the first cleaning brush, so as to improve the cleaning effect.

[0027] In some embodiments, the post-welding discharging dedusting unit further comprises an eighth suction device configured to dedust the battery cell after welding.

[0028] In some embodiments, the unloading carrier dust removal unit includes a third robotic arm, a second cleaning brush, and a ninth dust collection member, wherein the second cleaning brush is disposed on the third robotic arm, and the ninth dust collection member is disposed on the return flow line. This facilitates dust removal of the transport carrier on the return flow line.

[0029] In a second aspect, the present application proposes a battery production line, comprising a dust removal system as described in any one of the embodiments of the present application.

[0030] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0032] Figure 1 Schematic diagram of a dust removal system provided for some embodiments of the present application;

[0033] Figure 2 A schematic diagram of a battery cell provided in some embodiments of the present application;

[0034] Figure 3 Schematic diagram of the welding process of battery cells and current collecting plates provided in some embodiments of the present application.

[0035] The accompanying drawings in the specific implementation manner are as follows:

[0036] 11. Battery cell; 12. Housing; 13. Collector plate; 14. Support block; 15. Top cover; 16. Sealing pin. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0040] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0042] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0043] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0044] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0045] The battery cell is the most important component of the battery. It undergoes a series of processes, including mechanical / ultrasonic flattening, encapsulation, casing, collector plate welding, and sealing welding, before it can be assembled into a finished battery. During the welding process, the battery cell requires dust removal equipment to ensure battery quality.

[0046] Since the battery cells and collecting trays will be contaminated by dust particles during the loading, transportation, welding and unloading processes, the dust removal equipment in the related art can only remove dust from the battery cells and collecting trays during the welding process, or can only remove dust from the battery cells alone, which will inevitably affect the dust removal effect and thus affect the product quality.

[0047] Based on the above considerations, in order to solve the problem of poor dust removal effect of existing dust removal equipment during use, a dust removal system is designed. The dust removal system includes an incoming material dust removal unit, a loading and transporting carrier dust removal unit, a loading and transporting carrier dust removal unit, a welding dust removal unit, a post-welding material unloading dust removal unit, and a post-welding material unloading dust removal unit. The incoming material dust removal unit is configured to remove dust during the electrode winding process and to remove dust during the flattening process of the wound battery cell. The loading and transporting carrier dust removal unit is located downstream of the incoming material dust removal unit along the battery cell conveying direction. The loading and transporting carrier dust removal unit is configured to remove dust from the transport carrier. The loading dust removal unit is located downstream of the loading transport carrier dust removal unit along the battery cell conveying direction, and the loading dust removal unit is configured to remove dust from the transport logistics line, as well as the battery cells and the collecting plate. The welding dust removal unit is located downstream of the loading dust removal unit along the battery cell conveying direction, and the welding dust removal unit is configured to remove dust from the collecting plate and the battery cells during the welding process. The post-welding unloading dust removal unit is located downstream of the welding dust removal unit along the battery cell conveying direction, and the post-welding unloading dust removal unit is configured to remove dust from the battery cells after welding, and the unloading carrier dust removal unit is configured to remove dust from the transport carrier on the reflux logistics line.

[0048] In the technical solution of the embodiment of the present application, the incoming material dust removal unit is used to remove dust from the electrode winding process and the battery cells after winding are dusted during the flattening process; the loading and transport carrier dust removal unit is used to remove dust from the transport carrier; the loading and transport carrier dust removal unit is used to remove dust from the transport logistics line and the battery cells and current collecting plates; the welding dust removal unit is used to remove dust from the current collecting plates and battery cells during the welding process; the post-welding dust removal unit is used to remove dust from the battery cells after welding; the unloading carrier dust removal unit is used to remove dust from the transport carrier on the return logistics line, thereby achieving comprehensive dust removal of the current collecting plates and battery cells during the welding process, effectively improving the dust removal efficiency, and thereby improving the quality of the product after welding.

[0049] According to some embodiments of the present application, Figure 1 This is a schematic diagram of the dust removal system in this application. Figure 1 As shown, the present application provides a dust removal system, which includes an incoming material dust removal unit, a loading and transporting carrier dust removal unit, a loading and transporting carrier dust removal unit, a welding dust removal unit, a post-welding unloading dust removal unit and an unloading carrier dust removal unit, wherein the incoming material dust removal unit is configured to remove dust during the electrode winding process and to remove dust during the flattening process of the wound battery cell, the loading and transporting carrier dust removal unit is located downstream of the incoming material dust removal unit along the battery cell conveying direction, the loading and transporting carrier dust removal unit is configured to remove dust from the transport carrier, and the loading dust removal unit is located at the loading and transporting carrier. The carrier dust removal unit is downstream of the battery cell conveying direction, the loading dust removal unit is configured to remove dust from the transport logistics line, and to remove dust from the battery cells and the collecting tray. The welding dust removal unit is located downstream of the loading dust removal unit along the battery cell conveying direction, and the welding dust removal unit is configured to remove dust from the collecting tray and the battery cells during the welding process. The post-welding unloading dust removal unit is located downstream of the welding dust removal unit along the battery cell conveying direction, and the post-welding unloading dust removal unit is configured to remove dust from the battery cells after welding. The unloading carrier dust removal unit is configured to remove dust from the transport carrier on the reflux logistics line.

[0050] The dust removal system in this embodiment can be applied to Figure 2 The battery cell includes a battery cell 11, a shell 12, a current collecting tray 13, a support block 14, a top cover 15 and a sealing nail 16, wherein the battery cell 11 is located inside the shell 12, and the current collecting tray 13 is welded to the tabs on the battery cell 11. After the battery cell 11 and the current collecting tray 13 are installed in the shell 12, the support block 14 is placed between the current collecting tray 13 and the top cover 15, and the top cover 15 and the shell 12 are welded together. The support block 14 can be made of conductive material (such as nickel-plated steel), so as to assist in the current distribution between the current collecting tray 13 and the top cover 15, reduce contact resistance, and reduce Joule heat generation; finally, laser welding is used to weld the sealing nail 16 to the corresponding liquid injection port.

[0051] It should be noted that the above-mentioned structure of the battery cell is only an example, and in other alternative solutions, other structures may also be adopted, for example, the battery cell is a square battery.

[0052] The incoming material dust removal unit in this embodiment is mainly used to remove dust during the electrode winding and flattening process. Among them, the electrode winding is the process of winding the positive electrode, negative electrode and diaphragm coated with active materials into a cylindrical or square battery cell structure in a specific order; flattening is the process of mechanically pressing the battery cell after winding or stacking to make the electrode and diaphragm fit tightly and the surface smooth.

[0053] During the winding process, the incoming material dust removal unit vacuums the positive and negative electrode sheets and separators at multiple locations, including the die-cutting, feeding, and winding needle positions, effectively preventing graphite particles from falling onto the large surface of the battery cell. During the flattening process, the incoming material dust removal unit vacuums the flattened end surfaces to remove any metal particles.

[0054] The loading and transporting carrier dust removal unit in this embodiment is mainly used to remove dust from the transport carrier that transports the collecting tray and battery cells. The transport carrier can be a material cup, a support cup, etc. When the collecting tray and battery cells are transferred to the transport carrier, the loading and transporting carrier dust removal unit removes dust from them to prevent dust from being carried on the transport carrier.

[0055] The loading and dust removal unit in this embodiment primarily removes dust from the transport logistics line, while also removing dust from the battery cells and collector tray. After the collector tray and battery cells are transferred to their respective transport carriers, the transport logistics line is first dusted, and then the carrier, along with the collector tray and battery cells on it, is transferred to the transport logistics line. This prevents dust from the transport logistics line from falling onto the collector tray and battery cells. Furthermore, during transportation, the collector tray and the end faces of the battery cells are dusted simultaneously, further preventing dust from falling onto the collector tray and battery cells.

[0056] The welding dust removal unit in this embodiment is mainly used to remove welding dust, welding smoke, etc. generated by the current collecting plate and the battery cell during the welding process.

[0057] The post-weld dust removal unit in this embodiment mainly removes the particles generated after welding through a brush. At the same time, it removes dust from the large surface of the battery cell after welding to remove the graphite particles, metal particles, etc. remaining on the large surface to ensure that there are no piercing metal particles on the large surface.

[0058] The unloading carrier dust removal unit in this embodiment mainly removes dust from the transport carrier corresponding to the collecting plate and the transport carrier corresponding to the battery cell formed after winding and flattening.

[0059] When the dust removal system of this embodiment is in use, dust is removed during the winding process of the electrode and during the flattening process of the wound battery cells through the incoming material dust removal unit; dust is removed from the transport carrier through the loading transport carrier dust removal unit; dust is removed from the transport logistics line and the battery cells and current collecting plates through the loading dust removal unit; dust is removed from the current collecting plates and battery cells during the welding process through the in-welding dust removal unit; dust is removed from the battery cells after welding through the post-welding dust removal unit; and dust is removed from the transport carrier on the return logistics line through the unloading carrier dust removal unit, thereby achieving comprehensive dust removal of the current collecting plates and battery cells during the welding process, effectively improving the dust removal efficiency, and thereby improving the quality of the product after welding.

[0060] According to some embodiments of the present application, the loading and dust removal unit includes a fourth dust suction piece, which is arranged on the bottom surface of the transport logistics line and is configured to remove debris from the gaps in the transport logistics line.

[0061] The fourth dust collecting component in this embodiment can be a hair dryer, a centrifugal dust collector, an electrostatic dust collector, etc.

[0062] The fourth dust collection member in this embodiment can be bolted to the frame of the transport line, with the air outlet of the fourth dust collection member facing the bottom surface of the transport line. During use, the fourth dust collection member removes debris from the gaps in the transport line, thereby improving the cleanliness of the transport line and preventing debris from falling onto the battery cells or collector tray.

[0063] According to some embodiments of the present application, the loading and dust removal unit further includes a fifth dust collecting member, which is disposed on the bottom surface of the transport logistics line and is configured to absorb debris on the transport logistics line through electrostatic adsorption.

[0064] The fifth dust collecting element in this embodiment may be an electrostatic adsorption roller. The electrostatic adsorption roller may be composed of a roller core, a conductive layer, an insulating layer, and electrodes. The conductive layer is wrapped around the surface of the roller core, the insulating layer is located on the surface of the conductive layer, and the electrodes are mounted at both ends of the roller core or other specific locations to connect to a power source and provide charge to the electrostatic adsorption roller. It should be noted that the structure of the electrostatic adsorption roller described above is merely an example and may be determined based on actual circumstances. This specification and embodiments do not limit this.

[0065] The two ends of the roller core of the electrostatic adsorption roller in this embodiment are rotatably connected to the frame on the transport logistics line. When in use, the electrostatic adsorption roller can conveniently adsorb the fine dust particles remaining on the surface of the transport logistics line through the electrostatic adsorption function carried by the electrostatic adsorption roller itself.

[0066] According to some embodiments of the present application, the transport logistics line includes a rotating roller wrapped with an adsorption layer.

[0067] The adsorption layer in this embodiment can be formed of silica gel, aerogel, etc., which is not limited here.

[0068] In use, when the transport carrier is transferred on the transport logistics line, the bottom surface of the transport carrier is in contact with the corresponding rotating roller, at this time, the dust on the bottom surface of the transport carrier can be conveniently adsorbed by the adsorption layer, so as to avoid the dust on the bottom surface of the transport carrier from falling on the battery cell and the current collecting plate on the transport carrier.

[0069] According to some embodiments of the present application, the transport logistics line further comprises a cleaning roller in contact with the rotating roller and configured to clean the rotating roller.

[0070] The cleaning roller in the embodiment can be a dust-sticking roller, a sponge rubber roller, etc. The two ends of the roller core of the cleaning roller are correspondingly rotationally connected to the rack on the transport logistics line, and the circumferential side of the cleaning roller is in contact with the circumferential side of the corresponding rotating roller.

[0071] In use, the dust adsorbed on the rotating roller will stick to the cleaning roller, so that the rotating roller can be conveniently cleaned.

[0072] According to some embodiments of the present application, the cleaning roller comprises a roller body and a sticky layer wrapped on the surface of the roller body.

[0073] In the embodiment, the two ends of the roller body are correspondingly rotationally connected to the rack on the transport logistics line, and the roller body can rotate relative to the rack. The sticky layer wrapped on the surface of the roller body has a sticky side located on the outer side.

[0074] In this way, by contacting the sticky layer with the rotating roller, the dust adsorbed on the rotating roller will stick to the sticky layer, so that the rotating roller can be cleaned.

[0075] According to some embodiments of the present application, the cleaning roller comprises a roller body and a plurality of sticky layers, and adjacent two sticky layers are bonded. One of the sticky layers is wrapped on the surface of the roller body.

[0076] In the embodiment, the two ends of the roller body are correspondingly rotationally connected to the rack on the transport logistics line, and the roller body can rotate relative to the rack.

[0077] In use, when the outermost sticky layer has more sundries stuck thereon, the outermost sticky layer can be torn off, and the next layer of sticky layer can continue to work.

[0078] According to some embodiments of the present application, the feeding and dust removing unit further comprises a sixth dust removing member arranged on the transport logistics line and configured to remove dust from the battery cell and the current collecting plate.

[0079] The sixth dust removing member in the embodiment can be a hair dryer, a centrifugal dust collector, an electrostatic dust collector, etc.

[0080] The sixth dust collecting member in this embodiment can be fixed to the frame of the transport logistics line by bolts. In this case, the air outlet of the sixth dust collecting member is directed toward the battery cells and current collecting tray on the transport carrier on the transport logistics line. When in use, the sixth dust collecting member can further remove dust from the battery cells and current collecting tray on the transport logistics line.

[0081] According to some embodiments of the present application, the incoming dust removal unit includes a plurality of first dust suction members, and the plurality of first dust suction members are distributed at intervals along the winding direction of the pole piece.

[0082] The first dust collecting component in this embodiment can be a vacuum cleaner, an ion blower, etc. The specific one can be determined according to actual conditions, and this specification does not limit this.

[0083] Since the pole piece is processed at multiple stations during the winding process, for example: at the die-cutting position, the position of the specific shape notch formed by the mold or laser cutting after the pole piece is coated and slit is required to align the pole piece and the diaphragm during winding to avoid misalignment; at the feeding position, the pole piece and the diaphragm enter the initial contact point of the winder, at which time the material is pulled by the winding needle to the starting position of winding; during winding and forming, the winding needle vacuum adsorbs and fixes the pole piece and the starting end of the diaphragm. In order to ensure that the pole piece is clean at each station during the winding process, this embodiment is respectively provided with a first dust collecting member at each station. In this way, the pole piece is dusted at the die-cutting station, feeding station, and winding needle station during the winding process by multiple first dust collecting members, thereby effectively improving the dust removal effect.

[0084] According to some embodiments of the present application, the incoming dust removal unit further includes a rotating member and a second dust suction member, the rotating member is connected to the second dust suction member, and the second dust suction member is located on the end surface of the battery cell when it is flattened.

[0085] The rotating part in this embodiment may be a motor, and the second dust collecting part may be a vacuum cleaner, an ion blower, etc., which are not limited here.

[0086] When in use, the rotating part can be fixed on the flattened frame, and the second dust collecting part is connected to the rotating shaft on the rotating part. The rotating part drives the second dust collecting part to rotate, so that the second dust collecting part can generate a rotating airflow when working, and the rotating airflow is used to remove dust from the flattened end face of the battery cell to remove particles on the flattened end face.

[0087] According to some embodiments of the present application, the loading and transporting carrier dust removal unit includes a first robotic arm and a third dust collecting piece. The first robotic arm is configured to drive the transporting carrier to invert, and the third dust collecting piece is configured to remove dust from the transporting carrier.

[0088] The third dust collecting component in this embodiment can be a centrifugal dust collector, an electrostatic dust collector, etc., which is not limited here.

[0089] When in use, the transport carrier is grasped by the first robotic arm so as to be inverted, and then the inverted transport carrier is dusted by the third dust collecting member, thereby avoiding dust accumulation in the transport carrier and improving the cleaning effect.

[0090] According to some embodiments of the present application, the loading and transporting carrier dust removal unit further includes a detection component, which is disposed on the first robotic arm and is configured to detect the cleanliness of the transporting carrier.

[0091] The detection component in this embodiment can be a laser particle counter, a cleanliness measuring instrument, etc.

[0092] During use, after the third dust collecting element has finished removing dust from the transport carrier, the first robotic arm drives the detection element to move around the transport carrier to detect whether the surface of the transport carrier is clean. If dust is still detected on the surface of the transport carrier, the third dust collecting element is used to repeat the dust removal of the transport carrier.

[0093] According to some embodiments of the present application, the dust removal unit during welding includes a seventh dust suction piece, which is configured to remove dust from the collecting plate and the battery cell during the welding process.

[0094] The seventh dust collecting component in this embodiment may be a hair dryer, a centrifugal dust collector, an electrostatic dust collector, etc.

[0095] The seventh dust collecting member can be fixed to the welding station of the current collecting tray and the battery core by a fixing seat. When the current collecting tray and the battery core are being welded, the seventh dust collecting member is started to remove the welding ash, welding smoke and the like generated during the welding process.

[0096] According to some embodiments of the present application, the post-weld material unloading and dust removal unit includes a second robotic arm, a vibrator and a first cleaning brush, the vibrator is arranged on the first cleaning brush, and the first cleaning brush is arranged on the second robotic arm.

[0097] The vibrator in this embodiment can be fixed to the first cleaning brush via bolts, and the first cleaning brush can also be fixed to the second robotic arm via bolts. During use, the second robotic arm can drive the first cleaning brush to move to clean particles generated after welding. At the same time, during the cleaning process of the first cleaning brush, the vibrator drives the first cleaning brush to vibrate synchronously to improve the cleaning effect.

[0098] According to some embodiments of the present application, the post-welding dust removal unit further includes an eighth dust suction piece, which is configured to remove dust from the battery cells after welding.

[0099] The eighth dust collecting component in this embodiment may be a hair dryer, a centrifugal dust collector, an electrostatic dust collector, etc.

[0100] The eighth dust collecting member is fixed to the blanking station of the collecting tray and the battery core by a supporting base. After the collecting tray and the battery core are welded, the eighth dust collecting member is started, and the battery core after welding can be dusted.

[0101] According to some embodiments of the present application, the unloading carrier dust removal unit includes a third robotic arm, a second cleaning brush and a ninth dust collection piece, the second cleaning brush is arranged on the third robotic arm, and the ninth dust collection piece is arranged on the reflux logistics line.

[0102] The ninth dust collecting component in this embodiment may be a hair dryer, a centrifugal dust collector, an electrostatic dust collector, or the like.

[0103] The second cleaning brush can be bolted to the third robotic arm, and the ninth dust collecting element can be bolted to the return flow line. When the transport carrier passes through the return flow line, the third robotic arm drives the second cleaning brush to clean the surface of the transport carrier. After cleaning, the ninth dust collecting element blows air over the transport carrier to further improve dust removal.

[0104] In summary, when the dust removal system in the embodiment of the present application is used, refer to Figure 3 As shown, it can be divided into six steps:

[0105] Step 1: Before welding the collector plate to the battery cell, the battery cell is first formed by winding and flattening the electrode sheet. The incoming dust removal unit is used to remove dust from the electrode sheet winding process, the wound battery cell during the flattening process, and the collector plate.

[0106] Step 2: The material tray and the material cup are dusted by the dust removal unit of the loading and transporting carrier. After the dust removal, the collecting tray is loaded into the material tray to complete the collecting tray loading, and the battery cell is loaded into the supporting cup to complete the battery cell loading;

[0107] Step 3: Use the feeding dust removal unit to remove dust from the material cup logistics line and the support cup logistics line, then transfer the material cup together with the collecting tray on the material cup to the material cup logistics line, and transfer the support cup together with the battery cell on the support cup to the support cup logistics line; at this time, use the feeding dust removal unit to remove dust from the collecting tray and the battery cell respectively, completing the dust removal of the collecting tray before welding and the dust removal of the battery cell before welding;

[0108] When the collecting tray on the material cup logistics line is transported to the welding station, the material cup logistics line stops running, and the collecting tray positioning is completed at this time; when the battery cell on the support cup logistics line is transported to the welding station, the support cup logistics line stops running, and the battery cell positioning is completed at this time;

[0109] Step 4: When the collector plate and the battery cell are laser welded, use the dust removal unit to remove dust from the collector plate and the battery cell during the welding process;

[0110] Step 5: After welding is completed, the collector plate and battery cells are cleaned by the post-weld dust removal unit. After the post-weld dust removal is completed, the corresponding welding quality is detected by CCD. When the quality is qualified, the welded battery cells are transferred to the unloading logistics line;

[0111] Step 6: After welding is completed, the corresponding material cups are transferred to the first reflow logistics line, and the support cups are transferred to the second reflow logistics line. At this time, the material cups and the support cups are cleaned respectively through the unloading carrier dust removal unit. After cleaning, the collecting plate is loaded with the material cups again, and the battery cells are loaded with the support cups.

[0112] This application uses an incoming material dust removal unit, a loading and transport carrier dust removal unit, a loading dust removal unit, a welding dust removal unit, a post-welding unloading dust removal unit, and a unloading carrier dust removal unit to achieve comprehensive dust removal of the collecting plate and battery cells before, during, and after welding, effectively improving the dust removal efficiency and thereby improving the quality of the product after welding.

[0113] The present application also provides a battery production line, comprising a dust removal system as described in any one of the embodiments of the present application.

[0114] The specific structure of the dust removal system in this embodiment refers to the above embodiment. Since all the technical solutions of all the above embodiments are adopted in this battery production line, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A dust removal system, characterized in that: include: An incoming material dust removal unit, configured to remove dust during the electrode winding process and to remove dust during the flattening process of the wound battery cells; A loading and transporting carrier dust removal unit, the loading and transporting carrier dust removal unit is located downstream of the incoming material dust removal unit along the battery cell conveying direction, and the loading and transporting carrier dust removal unit is configured to remove dust from the transporting carrier; A loading dust removal unit, located downstream of the loading transport carrier dust removal unit along the battery cell conveying direction, and configured to remove dust from the transport logistics line, as well as from the battery cells and the collecting tray; a welding dust removal unit, the welding dust removal unit being located downstream of the feeding dust removal unit along the battery cell conveying direction, the welding dust removal unit being configured to remove dust from the collecting plate and the battery cells during the welding process; a post-weld material removal dust removal unit, the post-weld material removal dust removal unit being located downstream of the welding dust removal unit along the battery cell conveying direction, the post-weld material removal dust removal unit being configured to remove dust from the battery cells after welding; The unloading carrier dust removal unit is configured to remove dust from the transport carrier on the return flow line.

2. The dust removal system according to claim 1, characterized in that: The loading and dust removal unit includes a fourth dust collecting member, which is arranged on the bottom surface of the transport logistics line and is configured to remove debris from the gaps in the transport logistics line.

3. The dust removal system according to claim 2, characterized in that: The loading and dust removal unit further includes a fifth dust collecting member, which is disposed on the bottom surface of the transport logistics line and is configured to absorb debris on the transport logistics line through static electricity.

4. The dust removal system according to claim 3, characterized in that: The transport logistics line includes a rotating roller, and the rotating roller is wrapped with an adsorption layer.

5. The dust removal system according to claim 4, characterized in that: The transport logistics line further includes a cleaning roller in contact with the rotating roller and configured to clean the rotating roller.

6. The dust removal system according to claim 5, characterized in that: The cleaning roller comprises a roller body and an adhesive layer, wherein the adhesive layer is wrapped around the surface of the roller body.

7. The dust removal system according to claim 5, characterized in that: The cleaning roller comprises a roller body and multiple adhesive layers, two adjacent adhesive layers are adhered to each other, and one adhesive layer is wrapped around the surface of the roller body.

8. The dust removal system according to any one of claims 2 to 7, characterized in that: The loading and dust removal unit further includes a sixth dust collection member, which is disposed on the transport logistics line and is configured to remove dust from the battery cells and the collecting plate.

9. The dust removal system according to claim 1, characterized in that: The incoming material dust removal unit includes a plurality of first dust collecting members, and the plurality of first dust collecting members are spaced apart and distributed along the winding direction of the pole piece.

10. The dust removal system according to claim 9, characterized in that: The incoming material dust removal unit further includes a rotating member and a second dust collecting member, wherein the rotating member is connected to the second dust collecting member, and the second dust collecting member is located on the end surface of the battery core when it is flattened.

11. The dust removal system according to claim 1, characterized in that: The loading and transporting carrier dust removal unit includes a first robotic arm and a third dust collecting member. The first robotic arm is configured to drive the transporting carrier to invert, and the third dust collecting member is configured to remove dust from the transporting carrier.

12. The dust removal system according to claim 11, characterized in that: The loading and transporting carrier dust removal unit further includes a detection component, which is disposed on the first robotic arm and is configured to detect the cleanliness of the transporting carrier.

13. The dust removal system according to claim 1, characterized in that: The welding dust removal unit includes a seventh dust suction piece, and the seventh dust suction piece is configured to remove dust from the collecting plate and the battery core during the welding process.

14. The dust removal system according to claim 1, characterized in that: The post-weld material unloading and dust removal unit includes a second robotic arm, a vibrator and a first cleaning brush. The vibrator is arranged on the first cleaning brush, and the first cleaning brush is arranged on the second robotic arm.

15. The dust removal system according to claim 14, characterized in that: The post-weld material removal unit further includes an eighth dust collecting member, which is configured to remove dust from the battery cells after welding.

16. The dust removal system according to claim 1, characterized in that: The unloading carrier dust removal unit includes a third robotic arm, a second cleaning brush and a ninth dust collecting piece. The second cleaning brush is arranged on the third robotic arm, and the ninth dust collecting piece is arranged on the reflux logistics line.

17. A battery production line, characterized in that: Comprising the dust removal system according to any one of claims 1 to 16.

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