1004results about "Primary cell manufacture" patented technology

Disclosed in the present disclosure are a battery assembling system and a control method therefor, and a battery production line, which relates to the technical field of batteries. The battery assembling system can reduce the risk of congestion during tray return and facilitate the miniaturization of the battery assembling system. The battery assembling system comprises a stacking platform, an assembling device, an assembling transfer line, and a return device, wherein the stacking platform is used for storing trays and battery modules located in the trays; one end of the assembling device is connected to one end of the stacking platform by means of the assembling transfer line, the assembling device is used for assembling the battery modules to be assembled, and the assembling transfer line is used for transporting the trays carrying the battery modules to be assembled to the assembling device; and the other end of the assembling device is connected to the other end of the stacking platform by means of the return device, and the return device is used for transporting the trays carrying the assembled battery modules to the stacking platform.

The invention provides a battery cell rubberizing device and battery production equipment, the battery cell rubberizing device comprises a loading mechanism, a first positioning mechanism, a transfer mechanism and a rubberizing mechanism, the loading mechanism is used for storing a rubberizing piece; the first positioning mechanism is used for placing an adhesive part; the transfer mechanism comprises a first transfer mechanism and a second transfer mechanism which are both used for moving the adhesive parts; the adhesive tearing mechanism comprises a first adhesive tearing mechanism and a second adhesive tearing mechanism which are both used for tearing release paper of the adhesive part; wherein the first transfer mechanism sucks an adhesive piece of the loading mechanism and places the adhesive piece on the first positioning mechanism, the first adhesive tearing mechanism tears release paper at the bottom of the adhesive piece, the second transfer mechanism sucks the adhesive piece of the first positioning mechanism and adheres the adhesive piece to a battery cell of the conveying line, and the second adhesive tearing mechanism tears release paper at the top of the adhesive piece. Through the loading mechanism, the first positioning mechanism, the transferring mechanism and the adhesive tearing mechanism, release paper of the adhesive part is automatically torn off, and the adhesive part is adhered to the battery cell, so that the production efficiency and the product quality are improved.

The invention relates to an automatic pole piece waste collecting method for an automatic lithium battery winding machine in the technical field of information, which comprises the following steps of: arranging a vacuum suction nozzle array below a cutting device, connecting the vacuum suction nozzle array to a central vacuum pump, setting proper vacuum degree and suction time according to material characteristics and sizes of cut waste, and collecting the cut waste by a vacuum pump; the cut waste is automatically sucked and conveyed by controlling starting and stopping of the vacuum pump and the suction force. A flow sensor is installed in a vacuum suction pipeline, the speed and pressure of sucked airflow are monitored in real time, whether the suction process is normal or not is judged according to a preset flow curve, and if the abnormal condition of insufficient suction or airflow turbulence occurs, parameters of a vacuum pump are adjusted in time; the method comprises the steps of collecting and analyzing images of sucked waste materials, recognizing and classifying material types and shape features of the waste materials by adopting a convolutional neural network algorithm, and estimating the quantity and weight of the waste materials in combination with suction time and vacuum degree data so as to provide a basis for subsequent waste material recovery and treatment.

A battery cell includes a can and an electrode assembly accommodated in the can. The can includes a bottom member, a sidewall member connected to the bottom member and extending upwardly therefrom in an axial direction, and a cap covering an open end of the can at an axial end opposite to the bottom member. A current collector plate is electrically connected to an electrode of the electrode assembly proximate the open end. An edge of the cap is welded by forming a plurality of first welding portions spaced apart from one another along a circumferential direction, in each of which the sidewall member, the edge of the cap, and the current connector plate are all welded together. A second welding portion is also formed continuously along the circumferential direction, in which the sidewall member and the edge of the cap are both welded together.

The invention relates to a battery module, a battery monomer, a top cover assembly and a processing method thereof. The battery module comprises a top cover plate, the pole column is arranged on the top cover plate; the upper plastic cement is arranged outside the pole in a sleeving manner, and the upper plastic cement is connected with the top cover plate; and a first compact coating and a second compact coating, the first compact coating hermetically covers the joint of the pole and the upper plastic, and the second compact coating hermetically covers the joint of the upper plastic and the top cover plate. The nano material has the advantages of surface effect, volume effect and the like, so that the first compact coating and the second compact coating can obtain a compact coating structure which is uniform in texture, stable in performance and high in adhesiveness, and reliable sealing of a gap at the two connecting positions can be achieved. Therefore, compared with the prior art, a traditional sealing ring can be omitted, the leakage problem caused by inclined installation, aging and the like of the sealing ring is solved, and it is guaranteed that the top cover assembly is safe and reliable to use.

The invention discloses pole lug trimming equipment and method for a soft package battery, and relates to the technical field of battery core pole lug trimming, the pole lug trimming equipment comprises a feeding device and a pole lug trimming device, the pole lug trimming device comprises a conveying mechanism arranged on a machine tool and used for conveying a battery core; an electrode detection mechanism, an adjusting mechanism, an overturning mechanism, a primary flattening mechanism and a laser cutting mechanism are sequentially arranged in the conveying direction of a battery cell, wherein the electrode detection mechanism is used for detecting the electrode of a battery cell tab; the adjusting mechanism is used for adjusting the electrode direction of the battery cell tab; the overturning mechanism is used for overturning the battery cell; the secondary flattening mechanism is used for flattening the tabs; the size detection mechanism is used for detecting the tabs; according to the invention, automatic continuous operation of tab direction adjustment, different-size cutting and other procedures is realized, battery cells with different requirements are processed at the same time, the production cost is reduced, and the production efficiency is improved.

The invention discloses an isostatic pressing device of an all-solid-state battery and a preparation method of the all-solid-state battery, the isostatic pressing device of the all-solid-state battery comprises a shell with an opening at the upper end and an upper cover, an isostatic pressing cavity is formed in the shell, the upper cover covers the upper end of the shell, a cylinder is arranged in the isostatic pressing cavity, and the upper cover covers the upper end of the shell. An all-solid-state battery and a conductive connecting piece used for being electrically connected with a tab of the all-solid-state battery are placed in the cylinder body, the cylinder body comprises a left half part, an insulating parting strip and a right half part, the left half part, the insulating parting strip and the right half part are sequentially connected, the left half part is electrically connected with the upper cover, and the insulating parting strip is electrically connected with the conductive connecting piece. The left half part is electrically connected with the shell, the right half part is electrically connected with the shell, an insulating sealing ring is arranged between the shell and the upper cover, and a tab of the all-solid-state battery is electrically connected with the left half part or the right half part through the conductive connecting piece; the device has the advantages that the isostatic pressing function and the in-situ formation function are achieved, the preparation process is shortened, and the production efficiency is improved.

The invention discloses an ion thermoelectric gel battery as well as a preparation method and application thereof. The ion thermoelectric gel battery comprises a metal electrode, ion gel and a carbon electrode which are arranged in sequence, the ionic gel comprises the following components: a gel matrix and an oxidation / reduction couple. According to the ion thermoelectric gel battery, the organic matrix is used as the gel matrix, the oxidation / reduction couple is added, and the concentration and proportion of the oxidation / reduction couple are adjusted, so that the thermoelectric chemical effect can be improved, and high ion thermoelectric potential and high output power density can be obtained. The metal carbon asymmetric electrodes are used, the in-situ micro primary battery effect and the coupling enhanced thermoelectric chemical effect are introduced, the output voltage, the current density and the output power density of the ionic thermal battery are improved, the output power density can reach 1.6 W m <-2 > under the temperature difference of 4K, and the ionic thermal battery has good thermoelectric conversion performance.

To provide a manufacturing method of an electric storage device, capable of correcting an accuracy necessary surface of a sealing body within a reference value by changing a correction deformation magnitude in accordance with a wrapping displacement magnitude of the sealing body.SOLUTION: The present invention provides a manufacturing method of an electric storage device 10 having a correction step S4 of correcting a sealing body 12. The manufacturing method contains: a data base formation step S1 of having an accuracy necessary surface 12S in the sealing body, and accumulating correlation graph data SKD of a wrapping displacement magnitude Q of a front and back direction (a z-direction) of an accuracy necessary surface against a support point 12K of the sealing body and a correction deformation magnitude P in which the accuracy necessary surface is corrected and deformed to front and back opposite directions to a position where an accuracy requirement surface can be recovered to a normal position SK by own elastic force; a surface modulation measurement step S2 of measuring the wrapping displacement magnitude; and a displacement magnitude determination step S3 of determining whether the wrapping displacement magnitude satisfies a reference value KJ. In the correction step, a load is applied until the correction deformation magnitude occurs when the wrapping displacement magnitude to be measured in the surface modulation measurement step to the accuracy necessary surface in a determination rejection is matched to the wrapping displacement magnitude in the correlation graph data to be released.SELECTED DRAWING: Figure 5

An electrode stacking apparatus includes a stator with a horizontally installed main surface and multiple coils arranged under the main surface. A movable unit for stacking work includes a first mover that is movable above the main surface by magnetic levitation, an electrode holding unit, and a driving mechanism. The electrode holding unit is configured to press, from above, the base on top of the first mover and the sheet-type electrodes fed on the base's top surface. The driving mechanism drives the electrode holding unit by an external force acting thereon. The movable unit for operation work includes a second mover which can move above the main surface and an operation unit which operates the driving mechanism. A control unit is configured to control movements of the movable unit for stacking work and the movable unit for operation work by adjusting an amount of current flowed through the coils.

The invention provides a battery cell rubberizing device which comprises a battery cell rubberizing and pressing jig turntable which is fixedly mounted on the ground. A battery cell feeding mechanical arm, a battery cell transfer table, a laser code engraving and rubberizing device and four common rubberizing devices are sequentially arranged on the periphery and the upper portion of the battery cell rubberizing and pressing jig rotating disc in the clockwise direction in a winding mode. The rotating disc type battery cell rubberizing and pressing jig rotating disc has the beneficial effects that the rotating disc type battery cell rubberizing and pressing jig rotating disc originally created in the industry is adopted; according to the battery cell rubberizing device, all the components of the battery cell rubberizing device are arranged around the rotating disc of the battery cell rubberizing and pressing jig, laser code engraving and rubberizing are completed for the battery cell in a rotating mode, and the rotating disc type structure and a linear structure are smaller in occupied space and higher in production efficiency under the condition that the operation efficiency is the same.

The invention discloses a lithium battery processing roundness shaping device and method, and relates to the technical field of lithium battery processing, the lithium battery processing roundness shaping device comprises a positioning frame, and the inner side of the positioning frame is provided with a position adjusting rounding piece connected with a transverse push rod. By arranging the position adjusting and rounding piece and starting the first servo motor, the shortest distance between the edge of the correction roller and the circle center of the supporting plate is adjusted to be equal to the target radius of the battery cell, the telescopic air cylinder is started, the correction roller moves by a certain distance in the direction away from the circle center of the supporting plate, and one-time rounding treatment can be conducted on the battery cell by rotating the correction roller in the same direction; then the telescopic air cylinder drives the movable sleeve plate to move to enable the positioning plate to be attached to the movable sleeve plate again, so that the shortest distance between the correction roller and the circle center of the supporting plate is equal to the target radius of the battery cell, rounding treatment is conducted on the battery cell again through rotation of the correction roller, and therefore part of internal stress of the pole piece and the diaphragm can be released; and material fracture or drape aggravation caused by forced shaping is avoided.

The invention discloses a cell infiltration effect prediction method and device, and belongs to the field of cell manufacturing. The method comprises the following steps: acquiring pole piece infiltration characterization parameters; based on the pole piece infiltration characterization parameters, simulating the pole piece infiltration effect by using a finite element calculation method to obtain optimal parameters of complete infiltration; and setting cell infiltration process parameters according to the optimal parameters of complete infiltration. On the basis of a finite element calculation method, the infiltration behavior of the electrolyte on the surface of the battery cell pole piece can be accurately simulated, damage to the battery cell by a traditional detection method is avoided, the infiltration yield of the battery cell is increased, and the detection cost is reduced.

The invention is applicable to the technical field of battery production equipment, and provides winding equipment and battery manufacturing equipment, and the winding equipment comprises a compounding mechanism used for unwinding a first pole piece, a first diaphragm and a second pole piece, and pressing the first pole piece, the first diaphragm and the second pole piece to form a composite piece body; the diaphragm unwinding mechanism is used for unwinding a second diaphragm; and the winding mechanism is arranged on the discharging side of the compounding mechanism, and the winding mechanism is used for winding the composite sheet body and the second diaphragm to form an electrode assembly. The winding equipment is reasonable in layout, and the problem that the space above the winding mechanism is crowded is solved.

An adhesive tape attaching mechanism includes: an assembly base; a central adhesive tape suction assembly capable of adsorbing and attaching an adhesive tape to a first surface of a workpiece to be adhered; end adhesive tape suction assemblies arranged on two opposite sides of the central adhesive tape suction assembly, where each of the end adhesive tape suction assemblies includes an end driving member and an end adhesive tape suction member in transmission connection with the end driving member; and an end sliding assembly, disposed on the assembly base, where each of the end adhesive tape suction members is configured to be driven by the end driving member connected thereto, guided by the end sliding assembly to slide toward the central adhesive tape suction assembly for closing, and is capable of adsorbing, bending, and attaching the adhesive tape to a second surface and a third surface of the workpiece, respectively.

The invention provides an automatic cylindrical battery assembly line and a production process thereof, and the automatic cylindrical battery assembly line is provided with a first production station, a second production station, a third production station, a fourth production station, a fifth production station and a sixth production station. The battery cell main conveying line sequentially passes through a first production device, a second production device, a third production device, a fourth production device, a fifth production device and a sixth production device in the cylindrical battery automatic assembly line; a plurality of production devices are used for welding a negative collector plate of a battery cell, putting the battery cell into a shell, feeding an outer insulating sheet, locking a nut on the battery cell, welding the nut and a battery cell pole, welding a positive collector plate, welding a sealing nail, sleeving a film on the battery cell and detecting the battery cell, so that automatic, efficient and precise production of the cylindrical battery is realized.

The invention discloses a rubbing component, a battery cell rubbing device and a battery cell rubbing method, the rubbing component comprises a rubbing base, a rubbing wheel connected with the rubbing base and a central needle, the rubbing wheel and the rubbing base are rotatably connected with each other about a first shaft, the rubbing wheel comprises a rubbing head, the rubbing head is a rotary body relative to the first shaft, and the central needle is connected with the rubbing base. The rubbing and flattening head is used for rubbing and flattening the end surface of a tab of the battery cell; the central needle is rotatably connected with the rubbing base relative to a second shaft, the second shaft is perpendicular to the tangent plane of the side, away from the rubbing base, of the rubbing head, and the central needle is used for being inserted into a central hole of the battery cell. Compared with the prior art, the structure provided by the invention has the advantages that in the rubbing process, the central needle and the battery cell are relatively static, and the dynamic scraping effect between the central needle and the battery cell is fundamentally eliminated due to no rotary friction effect between the central needle and the battery cell; and the bad problems of short circuit caused by diaphragm friction scratch due to friction between the central needle and the battery cell in relative rotational motion and stripping and falling of the active material due to friction between the central needle and the positive and negative pole pieces in the rubbing process are effectively solved.

The invention relates to the field of battery cell feeding and discharging, and discloses a battery cell feeding and discharging workstation which comprises a frame, a first tray, a second tray and a battery cell gripper, the first tray is used for storing tested battery cells, the second tray is used for storing qualified battery cells and unqualified battery cells, the battery cell gripper is movably arranged on the frame, and the battery cell gripper is arranged on the frame. The battery cell gripper comprises a first driving part, a rotating mechanism and a clamping mechanism, the first driving part is arranged on the frame, a driving end of the first driving part is connected with the rotating mechanism, and a driving end of the rotating mechanism is connected with the clamping mechanism; the driving mechanism is used for driving the rotating mechanism and the clamping mechanism to move in the first direction, the rotating end of the rotating mechanism is connected with the clamping mechanism to drive the clamping mechanism to rotate, and the clamping mechanism is suitable for clamping the battery cell. The technical problem that a battery cell feeding and discharging work station cannot turn over the polarity of a battery cell is solved.

The invention discloses a battery carrying system, a control method and a battery preparation system.The battery carrying system comprises a picking module, a conveying module and a temporary storage module, the picking module comprises a plurality of picking assemblies arranged at intervals, and the picking assemblies are used for picking first battery components; the conveying module is used for conveying the picking module, and the picking module is arranged to release the unqualified first battery component to the recycling area and keep the qualified first battery component; the temporary storage module is arranged in the temporary storage area and comprises a transferring assembly and a plurality of temporary storage assemblies, the temporary storage assemblies are used for temporarily storing second battery components, each picking assembly is arranged corresponding to one temporary storage assembly, and the transferring assembly is used for transferring the second battery components among the multiple temporary storage assemblies; in response to the first state, the transfer assembly is arranged to enable the temporary storage assembly corresponding to the pickup assembly in the vacant state to be in the storage state, and the pickup assembly in the vacant state is arranged to pick up the second battery component from the corresponding temporary storage assembly, so that the size is saved, and the production efficiency is improved.

A locating apparatus, a battery cell manufacturing device and an insulating member location method. The locating apparatus comprises a locating platform and a locating mechanism, wherein the locating platform is used for supporting an insulating member, and the locating mechanism is configured to abut against at least one edge of the insulating member, so as to locate the insulating member. A locating mechanism abuts against at least one edge of an insulating member, so as to locate the insulating member, such that the locating accuracy can be improved, and when the insulating member is transferred to the next station to cooperate with other components, the insulating member and the other components thus have better relative positional relationships, thereby facilitating an improvement in the quality of a connection between the other components and the insulating member.

The embodiment of the invention provides a film coating system and method.The film coating system comprises control equipment and an upper computer, and the control equipment is used for setting a trigger signal to be in a first state when it is detected that a to-be-coated battery cell reaches a film coating station; the upper computer is used for generating a target virtual code of the battery cell to be coated according to a virtual code generation rule when reading that the trigger signal is in the first state; and the upper computer is used for writing the target virtual code into a preset database in the control equipment and completing station entering of the to-be-enveloped battery cell at the enveloping station based on the target virtual code, and the target virtual code has uniqueness in the preset database. The unique target virtual code can be generated, the precise tracing of the local data log is effectively realized, and the management efficiency of the enveloping system is improved.

The invention discloses a roll core pole piece deviation rectifying method and system, a computer readable storage medium and electronic equipment, and belongs to the technical field of lithium battery manufacturing, and the roll core pole piece deviation rectifying method comprises the following steps: arranging a detection device at a winding station; detecting the phase difference a between the tab side edge of the positive plate and the tab side edge of the negative plate; detecting the phase difference b between the non-tab side edge of the positive plate and the non-tab side edge of the negative plate; the phase difference value of the phase difference a and the phase difference b is calculated and recorded as c, and the absolute value of the phase difference value c is fed back to the deviation correcting mechanism; and performing deviation correction, and controlling the phase difference value c within a preset required range. According to the method, the phase difference of the tab side and the phase difference of the non-tab side are considered, so that the probability that the positive plate is wrapped by the negative plate is greatly improved, and balanced deviation correction is realized, so that the process yield is improved, and the effect of reducing the cost is achieved.

The invention discloses a miniaturized production line of a fully compatible battery cell assembly, and relates to the field of battery cell processing equipment. Magnetic drive conveying is adopted, automatic testing, rubberizing, NG replacing and battery cell offline of the battery cell are completed, and OCVamp is integrated through a miniaturized processing production line; the method comprises a series of complete processing flows of code scanning, rubberizing and NG automatic station replacement. The miniaturized production line comprises a main machine, and an on-line manipulator, an OCV detection mechanism, a magnetic drive conveying mechanism, a large-surface adhesive tearing mechanism, an automatic adhesive pasting mechanism, an NG replacement mechanism and an off-line manipulator are arranged in the main machine. The magnetic drive conveying mechanism comprises an annular track fixedly installed in the main machine and magnetic suspension sliding blocks installed on the annular track in a sliding mode, and each magnetic suspension sliding block is provided with a battery cell tool used for clamping a battery cell. According to the invention, a cell assembly equipment miniaturization method is realized, the biggest advantage is that the occupied area of the assembly equipment is effectively reduced, and the cell compatibility range is considered while the efficiency is ensured.

The invention relates to the technical field of battery cell rubberizing, in particular to a side-flying rubberizing machine and a rubberizing method thereof. Comprising a feeding module, a transfer module, a shaping mechanism, a stripping mechanism, a visual flying bat, a flying spider hand and a battery cell assembling position, the transferring module comprises a material taking gripper and a multi-separation-position transferring rotating disc, the material taking gripper, the shaping mechanism and the stripping mechanism are sequentially arranged on corresponding separation positions of the multi-separation-position transferring rotating disc, and materials of the feeding module are grabbed to the multi-separation-position transferring rotating disc through the material taking gripper; the multi-division transfer turntable rotates and drives the materials to sequentially enter the shaping mechanism and the stripping mechanism to finish shaping and stripping; and a structure for transferring a belt to an area where a visual flying photograph is located and taking a material by a flying spider hand from the transferring belt and moving the material to a battery cell assembling position to complete battery cell rubberizing is arranged behind the stripping mechanism, so that the effects of improving the battery cell rubberizing efficiency and precision, realizing full-process high-speed automatic operation and optimizing the space utilization rate and the system reliability are achieved.

The full-automatic spot welding machine for machining the battery pack comprises a rack and further comprises a welding bearing assembly, a feeding assembly, an assembling limiting assembly, a nickel sheet feeding assembly, a battery conveying assembly, a battery assembling assembly, a connecting assembling assembly and a battery spot welding assembly. Therefore, the problem of nickel sheet welding errors caused by manual spot welding is solved, meanwhile, the investment of human resources is reduced, the welding quality of a battery pack is guaranteed, through cooperative work of the battery conveying assemblies and through a single power source, the storage box can be driven to move in a reciprocating mode while the batteries are discharged, and the welding efficiency of the battery pack is improved. According to the device, the storage box is arranged, so that a battery pack in the storage box is prevented from being blocked, the material pushing plate synchronously drives the material blocking plate to descend before a battery is pushed out of the limiting seat through cooperative work of the battery assembling components, and material pushing and limiting releasing are synchronously carried out through arrangement of a single power source.

The invention discloses an edge printing method for a rectangular lithium battery, which comprises a printing module and a clamp, the printing module is used for spraying insulation UV ink, and the clamp is used for placing and transporting the rectangular lithium battery; the printing step comprises the steps that S1, the spraying face of the printing module and the lithium battery of the clamp are arranged in a relative included angle mode; s11, when the spraying face of the printing module is horizontally arranged, the clamp drives the lithium battery and the spraying face to form a relative inclination angle, and the edge and the spraying face form a relative inclination angle; s12, when the lithium battery is conveyed through the first conveying device and is vertically arranged, the spraying face of the printing module is obliquely arranged, and the spraying face and the edge of the lithium battery form a relative inclination angle; and S2, the printing module takes the edge as a printing surface, the preset printing area is calculated, the number of spraying holes of the printing module is calculated, the number and the arrangement mode of the spraying holes are compared with the enlarged printing area, and the two sides of the enlarged large printing area extend to the non-curved-surface positions of the A surface and the B surface.

The embodiment of the invention provides an electrode assembly and a manufacturing method and equipment thereof, a battery and a power utilization device, the electrode assembly is used for a battery monomer (100) and comprises a first pole piece (1) and a second pole piece (2) which are opposite in polarity, and each of the first pole piece (1) and the second pole piece (2) comprises a main body part (11) and a tab (12) protruding out of the main body part (11), the first pole piece (1) and the second pole piece (2) are wound around a winding axis (K), so that respective main body parts (11) form a winding main body (S); the end part of the winding main body (S) comprises at least one conductive region (121) and at least one liquid guide region (111), the tab (12) is led out from the conductive region (121), is wound for at least one circle and is used for being electrically connected with a terminal (1022) of a battery monomer (100), and the liquid guide region (111) and the conductive region (121) are arranged adjacently along the radial direction of the winding main body (S) and are used for guiding electrolyte to flow into the winding main body (S).

A wrapping film end-closing device (100), comprising a base (10), a clamping mechanism (20), a first end-closing mechanism (30) and a second end-closing mechanism (40), wherein the clamping mechanism (20) is arranged on the base (10), the clamping mechanism (20) being configured to clamp a workpiece (300) wrapped with a wrapping film (200) having unclosed ends, the wrapping film (200) being provided with a first end-closing section (2001) and a second end-closing section (2002); and the first end-closing mechanism (30) and the second end-closing mechanism (40) are arranged on the base (10), the first end-closing mechanism (30) and the second end-closing mechanism (40) being configured to attach the first end-closing section (2001) and the second end-closing section (2002) to the same surface of the workpiece, respectively. The clamping mechanism (20) can clamp the workpiece (300) wrapped with the wrapping film (200) having unclosed ends, so as to fix the position of the workpiece (300), such that the workpiece (300) is more stable during a wrapping film end-closing process. The first end-closing mechanism (30) and the second end-closing mechanism (40) can attach the first end-closing section (2001) and the second end-closing section (2002) to the same surface of the workpiece, respectively, thereby achieving end-closing of the workpiece (300), and both end-closing operations can be performed while the workpiece (300) is being clamped by the clamping mechanism (20). A battery production line, comprising the wrapping film end-closing device (100). In this way, both end-closing operations can be performed while the workpiece is being clamped by the clamping mechanism; thus, the end-closing process is simple and convenient, and the end-closing efficiency is high.

The present invention discloses a cylindrical battery film covering machine, including a frame and a conveying device, a correction device, an insulating sheet pasting device, a film covering device and a film heat shrinking device installed on the frame. The conveying device is used to convey the cylindrical battery to each processing station. The correction device is used to correct the pole ears of the cylindrical battery conveyed by the conveying device. The insulating sheet pasting device is used to paste the insulating sheet on the cylindrical battery after the pole ears are corrected. The film covering device is used to cover the cylindrical battery with the insulating sheet pasted on it with a heat shrink film. The film heat shrinking device is used to heat the cylindrical battery with the heat shrink film, so that the heat shrink film is formed and wrapped around the cylindrical battery. The present invention can realize the automation of the whole process of the processes of correcting the pole ears of the cylindrical battery, pasting the insulating sheet, covering the heat shrink film, and heating and forming the heat shrink film covered on the cylindrical battery through the above structure, which not only improves the work efficiency, but also reduces the labor cost.