CN113714328B

CN113714328B - Lug bending roller leveling station and lug bending roller leveling method

Info

Publication number: CN113714328B
Application number: CN202111013274.0A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Guangdong Lyric Robot Automation Co Ltd
Current assignee: Guangdong Lyric Robot Automation Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2023-05-12
Anticipated expiration: 2041-08-31
Also published as: CN113714328A

Abstract

The application relates to a tab bending roller leveling station and a tab bending roller leveling method, which belong to the technical field of battery production, wherein the tab bending roller leveling station comprises: the jacking mechanism is used for jacking a tray on the conveying line, and the tray is used for bearing a plurality of electric cores stacked side by side along the conveying direction of the conveying line; the clamping mechanism is arranged above the jacking mechanism and used for clamping the plurality of battery cells in the tray along the direction perpendicular to the conveying line; and the tab bending and rolling mechanism is used for bending and rolling the tabs of the plurality of battery cores. The utility model provides an erect the flat station of pole ear roller of bending on electric core conveying line, be convenient for with the processing station intercommunication of upper reaches and low reaches, automatic integrality is strong, has effectively saved the commodity circulation time that the material was carried between the station, sets up two pole ear roller flat mechanisms of bending and roller flat treatment to the pole ear at a plurality of electric core both ends simultaneously, has improved whole pole ear efficiency of bending and pole ear precision of bending.

Description

Lug bending roller leveling station and lug bending roller leveling method

Technical Field

The application relates to the technical field of battery production, in particular to a tab bending roller leveling station and a tab bending roller leveling method.

Background

The battery module of the lithium battery is formed by connecting a plurality of single battery cells in series and parallel through conductive connecting pieces. The single cell is provided with a tab for conducting electricity.

In the production flow of the existing battery module, the stacked battery cells are required to be transmitted to a tab bending station to be bent, the tab is bent and then is transmitted to a subsequent station to be welded and other processing is performed, the traditional tab is bent manually, and the efficiency is low and the labor cost is high.

Based on the method, tab bending equipment is gradually adopted to replace manual tab bending, so that labor cost is effectively reduced; but the bending efficiency is low, the bending yield is low, the rejection rate is high, and the waste of the material cost is large.

Disclosure of Invention

The purpose of the present application is: the tab bending roller leveling station and the tab bending roller leveling method effectively improve tab bending production yield and production efficiency.

In a first aspect, the present application provides a tab bending roll leveling station comprising: the jacking mechanism is used for jacking a tray on the conveying line, and the tray is used for bearing a plurality of battery cells stacked side by side along the conveying direction of the conveying line; the clamping mechanism is arranged above the jacking mechanism and used for clamping the plurality of battery cores in the tray along the direction perpendicular to the conveying line; the tab bending roll leveling mechanism is used for bending and leveling tabs of a plurality of battery cores.

According to the technical scheme, the lug bending roller leveling station is erected on the battery cell conveying line, the jacking mechanism is arranged to jack up the flowing tray on the conveying line rapidly, and the upper clamping mechanism is matched with the jacking mechanism to position the battery cell in the tray on the conveying line rapidly in real time; compared with single-station bending equipment, the material conveying device does not need to carry and transfer, effectively saves the logistics time of material conveying between stations, does not need to arrange a special feeding mechanism, and saves equipment cost; meanwhile, the device is convenient to communicate with upstream and downstream processing stations, has strong automation integration, and avoids the influence of multiple transfer of the battery core on the quality of the battery core and the bending of the tab; in addition, the lug bending roller leveling mechanism is arranged to bend and roll-level the lugs of the plurality of battery cores, so that on one hand, the lug bending operation time is further reduced, and the integral lug bending efficiency is improved; and on the other hand, the lug bending and rolling mechanism is adopted to bend and roll the lug, so that the lug bending precision is effectively improved.

In some embodiments, the clamping mechanism comprises: the lifting driving piece is arranged above the jacking mechanism; the clamping plate is connected with the output end of the lifting driving piece so as to be capable of ascending or descending under the driving of the lifting driving piece; the two clamping pieces are oppositely arranged on two opposite sides of the clamping plate in a sliding manner; the opening and closing driving piece is arranged on the clamping plate and is arranged to enable the two clamping pieces to move in opposite directions for clamping or move in opposite directions for opening.

According to the technical scheme, the battery cells are stacked in the tray side by side along the direction of the conveying line, the clamping mechanism adopts the two openable clamping pieces to clamp the battery cells from the upper side of the battery cells to position the battery cells along the direction perpendicular to the conveying line, and when the lug bending roller flat mechanisms on the two sides of the conveying line apply force to the battery cells, the battery cells are prevented from being stressed to displace in the tray along the direction perpendicular to the conveying line so as to influence bending precision; the clamping mechanism is arranged above the lifting mechanism in a lifting manner through the lifting driving piece, so that interference between the clamping mechanism and the lifting mechanism and interference between the lug bending roller flat mechanisms are avoided, and on the other hand, when the clamping mechanism is used for clamping and positioning, the clamping piece descends, and then is clamped and stacked, the working surface of the lug bending operation on the cell is reserved, and the situation that action interference is formed between the lug bending roller flat mechanisms on two sides of the conveying line when the cell is positioned is avoided.

In some embodiments, the tab bending roll-out mechanism comprises: a three-dimensional driving member; and the lug bending roller flat assembly is arranged at the output end of the three-dimensional driving piece. The three-dimensional driving piece can drive the lug bending roller flat assembly to flexibly move in the space within the travel range, the operation range is wide, the applicability is strong, and the lug bending roller flat assembly can flexibly adjust the operation position.

In some embodiments, the tab bending roll-out assembly includes: the first mounting plate is fixed at the output end of the three-dimensional driving piece; the first cylinder is fixed on the first mounting plate; the second mounting plate is connected to the output end of the first cylinder so as to extend or retract under the driving of the first cylinder; the bending plate is fixed on the second mounting plate and used for bending the lugs of the battery cell; the second cylinder is fixed on the second mounting plate; the flattening block is slidably sleeved on the bending plate and connected to the output end of the second cylinder so as to extend or retract under the drive of the second cylinder, and is used for flattening the bent tab; a third cylinder fixed to the first mounting plate; the roller is connected to the output end of the third cylinder so as to extend or retract under the drive of the third cylinder and is used for flattening the flattened tab; the driving directions of the first cylinder, the second cylinder and the third cylinder are perpendicular to the end face of the battery cell, on which the electrode lugs are arranged.

According to the technical scheme, the lug bending roller flat assembly is provided with the bending plate to bend the lug on the battery cell, the bending plate is sleeved with the flattening block, after the lug is bent by the bending plate, the flattening block stretches out to flatten the lug bent on the battery cell for the second time under the driving of the second cylinder, the lug bending effect is enhanced, the roller is arranged to flatten the flattened lug, the fitting degree of the lug after bending is further enhanced, and the lug bending effect is improved; on one hand, three working procedures of bending, flattening and rolling are adopted to bend and strengthen the tab, so that the bending precision is effectively improved, and the bending production yield of the whole battery cell is improved; on the other hand, the bending, flattening and rolling mechanism is compactly arranged on the first mounting plate, the flattening block is sleeved on the bending plate, the structure is simplified to the greatest extent, the integration of the whole module is improved, the occupied space of the whole module is reduced, a plurality of processing procedures can be respectively carried out on a plurality of lugs in a small operation space of the side face of the stacked battery core without forming operation interference, and the structure is exquisite and strong in practicability; on the other hand, the bending, flattening and roller flattening structures are integrated in the same module, the same three-dimensional driving mechanism is used, the whole structure is compact, compared with a mode of arranging a plurality of independent stations, the cost of peripheral equipment is remarkably saved, the whole operation space requirement of the equipment is reduced, the logistics rolling among the stations is avoided, and the processing efficiency and the processing yield are ensured.

In some embodiments, the tab bending roll-out mechanism comprises: the visual detection module is arranged on the three-dimensional driving piece and used for collecting position information of lugs at two ends of the plurality of electric cores, and the three-dimensional driving piece transfers the lug bending roller flat assembly to positions corresponding to the lugs of the plurality of electric cores according to the position information. The visual detection module is arranged to further accurately detect the actual position of the battery cell, and the operation position of the lug bending roller leveling mechanism is adjusted in real time according to the actual position of the battery cell, so that the bending precision is further improved, the requirement on the positioning precision of the battery cell is reduced, and the production abnormality caused by positioning deviation is reduced.

In some embodiments, the tab bending roller leveling mechanism comprises two tab bending roller leveling assemblies, the two tab bending roller leveling assemblies are arranged side by side along the conveying direction of the conveying line, the three-dimensional driving piece comprises a first linear driving piece arranged along the X-axis direction, a second linear driving piece arranged along the Y-axis direction and a third linear driving piece arranged along the z-axis direction, the first linear driving piece is parallel to the conveying direction line of the conveying line, and the third linear driving piece is arranged at the executing end of the first linear driving piece; the second linear driving piece is arranged at the executing end of the third linear driving piece, and the executing end of the second linear driving piece is connected with the lug bending roller flat assembly.

The two lug bending roller flat assemblies are arranged side by side, so that two lugs can be synchronously machined, and the lug bending roller flat efficiency is further improved.

In some embodiments, the first linear drive is a single axis robot or a lead screw, and the second linear drive and the third linear drive are single axis robots. The three-dimensional driving is realized by adopting the single-shaft manipulator or the combination of the single-shaft manipulator and the screw rod, and the device has low cost, high precision and convenient control.

In a second aspect, the present application provides a tab bending roll leveling method, including:

the jacking mechanism jacks up a tray on the conveying line, and the tray is used for bearing a plurality of battery cores stacked side by side along the conveying direction of the conveying line;

the clamping mechanism clamps a plurality of battery cells in the tray from the upper part of the tray along the direction perpendicular to the conveying line so as to position the battery cells;

the lug bending roll leveling mechanism is used for bending and leveling the lugs of the plurality of electric cores and comprises a three-dimensional driving piece and a lug bending roll leveling assembly driven by the three-dimensional driving piece, and the three-dimensional driving piece is used for driving the lug bending roll leveling assembly to bend and leveling the lugs of the plurality of electric cores;

the clamping mechanism releases the clamping of the plurality of battery cores;

the jacking mechanism descends to enable the tray to descend to the conveying line, and the conveying line drives the tray to move to the next station.

According to the technical scheme, the jacking mechanism is matched with the clamping mechanism, so that the battery cells in the tray on the conveying line can be directly positioned, the lug bending roller flat assembly performs bending roller flat operation on the lug, and the effect of the lug after bending is ensured.

In some embodiments, be equipped with visual detection module on the three-dimensional driving piece, before the utmost point ear roller flat-bed machine that bends and roll flat-bed processing is carried out to the utmost point ear of a plurality of electric cores, utilize visual detection module to carry out utmost point ear roller flat-bed machine position correction that bends earlier, specifically include:

the visual detection module is used for collecting position information of the lugs of the plurality of battery cells clamped and positioned by the clamping mechanism;

the three-dimensional driving piece drives the lug bending roller flat assembly to move, and the three-dimensional driving piece transfers the lug bending roller flat assembly to positions corresponding to the lugs of the plurality of electric cores according to the position information;

the three-dimensional driving piece drives the lug bending roller leveling assembly to bend and roll leveling the lugs of the plurality of battery cores.

The visual detection module is adopted to correct the operation position of the lug bending roller leveling mechanism, so that the bending precision is further improved.

In some embodiments, the tab bending roll-out assembly includes:

the first mounting plate is fixed at the output end of the three-dimensional driving piece; the first cylinder is fixed on the first mounting plate; the second mounting plate is connected to the output end of the first cylinder so as to extend or retract under the driving of the first cylinder; the bending plate is fixed on the second mounting plate and used for bending the lugs of the battery cell; the second cylinder is fixed on the second mounting plate; the flattening block is slidably sleeved on the bending plate and connected to the output end of the second cylinder so as to extend or retract under the drive of the second cylinder, and is used for flattening the bent tab; a third cylinder fixed to the first mounting plate; the roller is connected to the output end of the third cylinder so as to extend or retract under the drive of the third cylinder and is used for flattening the flattened tab; the driving directions of the first cylinder, the second cylinder and the third cylinder are perpendicular to the end face of the battery cell, provided with the tab;

The three-dimensional driving piece drives the lug bending roller flat component to bend and roll flat the lugs of the plurality of battery cells, and the three-dimensional driving piece mainly comprises:

the three-dimensional driving piece drives the lug bending roller flat assembly to drive the bending plate to translate along the direction parallel to the conveying line, and the first cylinder drives the bending plate to repeatedly extend and retract to sequentially bend the lugs;

the three-dimensional driving piece drives the lug bending roller flat assembly to drive the flat pressing block to translate along the direction parallel to the conveying line, and the first air cylinder and the second air cylinder respectively drive the bending plate and the flat pressing block to repeatedly extend and retract so as to sequentially flatten a plurality of lugs;

the three-dimensional driving piece drives the lug bending roller leveling assembly to drive the roller to translate along the direction parallel to the conveying line, the third cylinder drives the roller to extend or retract, and when the roller extends, the three-dimensional driving piece drives the lug bending roller leveling assembly to drive the roller to lift and move, and the roller is leveled on a plurality of lugs in sequence.

The three-dimensional driving piece is matched with the lug bending roller flat assembly, a plurality of lugs of the stacked battery cell are sequentially bent, flattened and rolled flat, the lug bending effect is enhanced, and the degree of adherence of the lugs after bending is improved.

In some embodiments, the three-dimensional driving piece drives the lug bending roller flat assembly to drive the flattening block to translate along the direction parallel to the conveying line, and the first air cylinder and the second air cylinder respectively drive the bending plate and the flattening block to repeatedly extend and retract, so that a plurality of lugs are flattened in sequence, and the three-dimensional driving piece comprises the following steps:

The three-dimensional driving piece drives the lug bending roller flat assembly to drive the flattening block to translate along the direction parallel to the conveying line, so that the front end face of the flattening block is aligned with one bent lug;

the first cylinder drives the bending plate to extend until the front end surface of the bending plate abuts against the bent tab and is maintained;

the second cylinder drives the flattening block to extend out until the front end face of the flattening block and the bending plate are propped against the same bent tab to flatten the tab;

the second cylinder drives the flattening block to retract, and the flattening block retracts to an initial position of the second cylinder relative to the bending plate;

the first cylinder drives the bending plate and the flattening block on the bending plate to retract to the initial position of the first cylinder;

the three-dimensional driving piece drives the lug bending roller flat assembly to drive the flattening block to translate along the direction parallel to the conveying line, so that the front end face of the flattening block is aligned with the next bent lug, and the cycle is performed until all lugs are flattened.

The pole lug is flattened under the combined action of the flattening block and the bending plate, so that on one hand, the structure is compact, the operation space is saved, on the other hand, the bending plate is fully utilized, and the function integration is strong.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view 1 of a tab bending roller flat station provided in some embodiments of the present application;

fig. 2 is a schematic perspective view 2 of a tab bending roller flat station provided in some embodiments of the present application;

FIG. 3 is a schematic view of a clamping mechanism according to some embodiments of the present disclosure;

fig. 4 is a schematic structural view of a tray provided in some embodiments of the present application;

fig. 5 is a schematic structural diagram of a lifting mechanism according to some embodiments of the present disclosure;

fig. 6 is a schematic structural diagram of a tab bending roll leveling mechanism according to some embodiments of the present disclosure;

fig. 7 is a schematic structural diagram 1 of a tab bending roll flat assembly according to some embodiments of the present disclosure;

fig. 8 is a schematic structural view 2 of a tab bending roll flat assembly according to some embodiments of the present disclosure;

fig. 9 is a flowchart of a tab bending roll leveling method according to some embodiments of the present application.

Icon:

100-lifting mechanism;

11-lifting plates and 12-lifting cylinders;

200-trays;

21-bottom plate, 22-supporting plate, 23-baffle, 24-movable plate and 25-screw nut assembly;

300-clamping mechanism;

31-electric cylinders, 32-clamping plates, 33-clamping pieces, 34-sliding rail sliding seat assemblies, 35-clamping cylinders and 36-guide rods;

400-tab bending roll leveling mechanism;

41-a first linear driving piece, 42-a second linear driving piece, 43-a third linear driving piece, 44-a lug bending roller flat assembly and 45-a visual detection module;

441-first mounting plate, 442-first cylinder, 443-second mounting plate, 444-second cylinder, 445-flattening block, 446-bending plate, 4461-notch, 447-slide, 448-third cylinder, 449-mounting seat, 4410-roller, 4411-bracket, 4412-pressure sensor;

500-frames;

51-a cross frame;

600-conveying line.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is commonly put when the product of the application is used, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

With the development of new energy, the battery is widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and other fields. As the market demand for batteries increases, battery production processes are also continually improving.

In the existing battery cell tab bending process, after the tab is bent by adopting bending equipment, the bent tab can be subjected to a certain degree of reset change, namely the bent tab cannot be bent by 90 degrees along a bending line ideally and is kept, so that the tab bending precision is low, and when the subsequent operation is performed after bending, the tab cannot be bent in place or the bending failure causes processing failure or the production precision cannot meet the requirement, so that a large amount of cost is wasted.

In addition, the existing bending production line adopts single-station multi-station operation, so that the working procedure is complicated, the logistics time is wasted, the overall efficiency is influenced, the equipment cost is high, the occupied area of the field is large, in addition, the bending tab is easy to reset and abnormal in the process of transporting to the next station, and the bending yield is not obviously improved.

Based on the above consideration, in order to solve the problems that bending precision is low and overall bending efficiency is low due to the fact that a certain degree of resetting is easy to occur after the tab is bent, the inventor designs an integrated tab bending roller leveling station, immediately rolls the tab after bending, enhances the bending effect and improves the bending precision; and the bending roll leveling of the tab is completed at the same station, so that the equipment cost is saved, and the bending precision and the bending efficiency are improved.

As shown in fig. 1, the tab bending roll leveling station provided in the embodiment of the present application includes: the jacking mechanism 100 is used for jacking up the tray 200 on the conveying line 600, and the tray 200 is used for bearing a plurality of battery cells stacked side by side along the conveying direction of the conveying line 600; the clamping mechanism 300 is arranged above the jacking mechanism 100 and is used for clamping a plurality of battery cells in the tray 200 along the direction perpendicular to the conveying line; the tab bending roll leveling mechanism 400 is arranged beside the conveying line and is used for bending and leveling the tabs of the plurality of battery cells.

In the above technical scheme, the conveying line 600 is arranged along the direction marked by the X axis, the lug bending roller flat stations are arranged on the conveying line of the battery cell, the lifting mechanism 100 is arranged to quickly lift the flowing tray 200 on the conveying line, the upper clamping mechanism 300 is matched with the lifting mechanism 100, the processing positioning and the processed transportation of the battery cell in the tray 200 are quickly realized, the battery cell is convenient to communicate with the processing stations at the upstream and the downstream, the automation integration is strong, compared with the single-station bending equipment, the logistics time of material conveying between the stations is effectively saved, a special feeding mechanism is not required, and the equipment cost is saved; in addition, the tab bending roller leveling mechanism 400 is arranged to bend and roll-level the tabs of the plurality of battery cores, so that on one hand, the tab bending operation time is further reduced, and the overall tab bending efficiency is improved; on the other hand, the tab bending and rolling mechanism 400 is adopted to bend and roll the tab, so that the tab bending precision is improved.

As shown in fig. 2, in some embodiments, two tab bending and rolling mechanisms 400 are provided, and the two tab bending and rolling mechanisms 400 are disposed on two sides of the conveying line and are respectively used for bending and rolling tabs at two ends of the plurality of battery cells. Lug bending roll leveling station still includes: the rack 500 is arranged between the two lug bending roll leveling mechanisms 400; wherein the conveyor line passes through the frame 500, and the clamping mechanism 300 is mounted on the frame 500. The clamping mechanism 300 is mounted above the jacking mechanism 100 by a frame 500.

As shown in fig. 3, in some embodiments, the clamping mechanism 300 includes: a lifting driving member fixed to the frame 500; a clamping plate 32 connected to an output end of the elevation driving member so as to be capable of being elevated or lowered by the elevation driving member; two clamping pieces 33 which are arranged on two opposite sides of the clamping plate 32 in a sliding manner in opposite directions; the opening and closing driving piece is arranged on the clamping plate and is arranged to enable the two clamping pieces 33 to clamp in opposite movement or open in opposite movement.

As shown in fig. 2 and 3, a transverse frame 51 is installed at the top of a frame 500, an electric cylinder 31 is used as a lifting driving member, an execution end of the electric cylinder 31 is downward connected with a clamping plate 32, a guide rod 36 is arranged between the clamping plate 32 and the transverse frame 51, two opposite ends of the clamping plate 32 corresponding to two sides of a conveying line are slidably connected with a clamping member 33 through a sliding rail sliding seat assembly 34, and the opening and closing driving member comprises two clamping cylinders 35 which are oppositely installed on the clamping plate 32, and the two clamping members 33 are driven by one clamping cylinder 35.

Alternatively, as shown in fig. 4, the tray 200 on the conveying line includes a bottom plate 21 sliding on the conveying line and a support plate 22 parallel to the bottom plate 21, two opposite side edges of the support plate 22 perpendicular to the conveying line are respectively provided with a baffle plate 23 and a movable plate 24, the baffle plate 23 and the movable plate 24 are perpendicular to the support plate 22, the baffle plate 23 is fixedly connected with the bottom plate 21, the movable plate 24 is fixedly connected with the support plate 22, the support plate 22 is slidably arranged on the bottom plate 21, the bottom of the support plate 22 is provided with a screw nut assembly 25 for driving the support plate 22 to approach or separate from the baffle plate 23, a screw of the screw nut assembly 25 is arranged on the bottom plate 21 and connected with a rotating motor, and a nut of the screw nut assembly 25 is connected with the bottom of the support plate 22.

A cell limiting cavity is formed among the supporting plate 22, the baffle plate 23 and the movable plate 24, and a plurality of cells stacked side by side along the direction of the conveying line are clamped between the baffle plate 23 and the movable plate 24.

The jacking mechanism 100 may be a pallet 200 commonly used in conveyor lines, and the jacking mechanism 100 is only required.

As shown in fig. 4 and 5, as a preferred embodiment of the present embodiment, the jacking mechanism 100 includes a jacking plate 11 positioned below the bottom plate 21 and parallel to the bottom plate 21; the jacking plate 11 is connected with a jacking air cylinder 12 for driving the jacking plate 11 to lift and descend, the cylinder body of the jacking air cylinder 12 can be fixedly arranged on a plane or a platform, and the execution end of the jacking air cylinder 12 is vertically upwards connected with the bottom of the jacking plate 11.

It will be appreciated that the conveyor line is provided with an inductor (not shown) which may be mounted beside the jacking plate 11 on the conveyor line or on the jacking plate 11, and when the pallet 200 is transported to directly above the jacking plate 11 on the conveyor line, the inductor senses the pallet 200 and sends a signal to the controller, and the controller controls the jacking cylinder 12 to jack up, directly jack up the pallet 200 above the jacking plate 11.

The battery cells are stacked side by side in the tray 200 along the direction of the conveying line and clamped between the baffle plate 23 and the movable plate 24, the lugs of a plurality of battery cells face to two sides of the conveying line, the tray 200 is jacked up by the jacking mechanism 100 when moving above the jacking mechanism 100, then the clamping mechanism 300 clamps the upper parts of the battery cells and positions the battery cells from the upper parts of the two ends of the battery cells, where the lugs are arranged, so that the tray 200 and the clamping piece 33 form omnibearing positioning on the battery cells, and the battery cells are prevented from shifting when the lug bending roller leveling mechanism 400 applies force to the battery cells; the clamping mechanism 300 is arranged above the jacking mechanism 100 in a lifting manner through the lifting driving piece, so that interference between the clamping mechanism 300 and the jacking mechanism 100 and interference between the clamping mechanism and the lug bending roller leveling mechanism 400 are avoided, and on the other hand, when the clamping positioning is performed, the clamping piece 33 descends, and then is clamped and stacked, the working surface of the lug bending on the cell is reserved, and the situation that action interference is not formed between the lug bending roller leveling mechanism 400 on two sides of the conveying line when the cell is positioned is ensured.

As shown in fig. 6, in some embodiments, tab bending roll-leveling mechanism 400 includes: a three-dimensional driving member; the lug bending roller flat assembly 44 is mounted at the output end of the three-dimensional driving piece. The three-dimensional driving piece can drive the lug bending roller flat assembly 44 to flexibly move in the space within the travel range, the operation range is wide, the applicability is strong, and the lug bending roller flat assembly 44 can flexibly adjust the operation position.

As shown in fig. 7 and 8, in some embodiments, tab bending roll flat assembly 44 includes: the first mounting plate 441 is fixed to the output end of the three-dimensional driving member; a first cylinder 442 fixed to the first mounting plate 441; a second mounting plate 443 connected to an output end of the first cylinder 442 to be capable of being extended or retracted by the driving of the first cylinder 442; a bending plate 446 fixed to the second mounting plate 443 for bending the tab of the battery cell; a second cylinder 444 fixed to the second mounting plate 443; the flattening block 445 is slidably sleeved on the bending plate 446 and connected to the output end of the second cylinder 444 so as to extend or retract under the drive of the second cylinder 444, and the flattening block 445 is used for flattening the bent tab; a third cylinder 448 secured to the first mounting plate; the roller 4410 is connected to the output end of the third cylinder 448 to be capable of extending or retracting under the driving of the third cylinder 448, and the roller 4410 is used for flattening the flattened tab; the driving directions of the first cylinder 442, the second cylinder 444 and the third cylinder 448 are all perpendicular to the end face of the battery cell, on which the tabs are arranged.

Wherein, the bending plate 446 is a plate with a rectangular cross section, the cross section of the flattening block 445 is a frame, and the flattening block 445 is sleeved on the periphery of the bending plate 446. The flattening block 445 is profiled on the end face of the battery cell, and when the frame-shaped flattening block 445 acts on the bent tab face, balanced pressure is generated on the periphery of the tab, so that the tab face is uniformly stressed. The upper and/or lower ends of the front end face of the bending plate 446 are provided with notches 4461. Enough space is reserved for positioning the battery cell while the tab is bent, so that the bending plate 446 is prevented from interfering with the upper end clamping piece 33 or the lower end tray 200 of the battery cell in the translational bending process.

When the flattening block 445 extends out, the front end face of the flattening block 445 is flush with the front end face of the bending plate 446, and the front end face of the flattening block 445 and the front end face of the bending plate 446 act on the same lug face after bending together, so that the stress area of flattening the lug is further enlarged, and the flattening effect of the lug is effectively improved.

Wherein, the first mounting plate 441 is provided with a sliding seat 447 and a mounting seat 449, and the sliding seat 447 is slidably mounted on the first mounting plate 441 and connected to the output end of the third cylinder 448; the mount 449 is connected to the slide 447, the mount 449 is provided with a bracket 4411, the roller 4410 is arranged on the bracket 4411, and a pressure sensor 4412 is arranged between the mount 449 and the bracket 4411. The sliding seat 447 plays a role in supporting and guiding the roller 4410 during the expansion and contraction of the roller 4410 and the roller leveling operation, and further improves the expansion and contraction precision of the roller 4410 on the first mounting plate and the stability of the roller 4410 after being stressed during the roller leveling operation.

The first air cylinder 442 and the third air cylinder 448 are respectively disposed on two opposite sides of the first mounting plate 441, and after the first mounting plate 441 is connected to the three-dimensional driving element, the overall structure is stressed more uniformly and stably.

The lug bending roller flat assembly 44 is provided with a bending plate 446 for bending the lug on the battery cell, a flat pressing block 445 is sleeved on the bending plate 446, after the lug is bent by the bending plate 446, the flat pressing block 445 stretches out to perform secondary flat pressing on the lug bent on the battery cell under the drive of a second cylinder 444, the lug bending effect is enhanced, a roller 4410 is arranged for roller flat pressing of the flattened lug, the fitting degree of the lug after bending is further enhanced, and the lug bending effect is improved; on one hand, three working procedures of bending, flattening and rolling are adopted to bend and strengthen the tab, so that the bending precision is effectively improved, and the bending production yield of the whole battery cell is improved. On the other hand, the bending, flattening and rolling mechanism is compactly arranged on the first mounting plate 441, the flattening block 445 is sleeved on the bending plate 446, the structure is simplified to the greatest extent, the integration of the whole module is improved, the occupied space of the whole module is reduced, a plurality of processing procedures can be respectively carried out on a plurality of lugs in a small working space such as the side face of the stacked battery core, the working interference is not formed, and the structure is exquisite and the practicability is strong; on the other hand, the bending, flattening and roller flattening structures are integrated in the same module, the same three-dimensional driving mechanism is used, the whole structure is compact, compared with a mode of arranging a plurality of independent stations, the cost of peripheral equipment is remarkably saved, the whole operation space requirement of the equipment is reduced, the logistics rolling among the stations is avoided, and the processing efficiency is ensured.

As shown in fig. 6, in some embodiments, the tab bending roller flat mechanism 400 includes two tab bending roller flat assemblies 44, the two tab bending roller flat assemblies 44 are disposed side by side along the conveying direction of the conveying line, the three-dimensional driving member includes a first linear driving member 41 disposed along the X-axis direction, a second linear driving member 42 disposed along the Y-axis direction, and a third linear driving member 43 disposed along the z-axis direction, the first linear driving member 41 is parallel to the conveying direction line of the conveying line, and the third linear driving member 43 is disposed at the execution end of the first linear driving member 41; the second linear driving member 42 is disposed at an execution end of the third linear driving member 43, and the execution end of the second linear driving member 42 is connected to the tab bending roller flat assembly 44.

In some embodiments, the first linear drive 41 is a single axis robot or screw, and the second linear drive 42 and the third linear drive are single axis robots. The three-dimensional driving is realized by adopting the single-shaft manipulator or the combination of the single-shaft manipulator and the screw rod, and the device has low cost, high precision and convenient control.

As shown in fig. 6, the first linear driving member 41 is a single-axis manipulator disposed along the direction of the conveying line, two third linear driving members 43 are mounted side by side along the direction of the conveying line at the execution end of the first linear driving member 41, the two third linear driving members 43 are all single-axis manipulators disposed vertically, the execution ends of the two third linear driving members 43 are respectively connected with a second linear driving member 42 disposed horizontally and perpendicular to the conveying line, the second linear driving members 42 are all single-axis cylinders, and the two first mounting plates 441 are connected to the execution ends of the two second linear driving members 42 in one-to-one correspondence. The two lug bending roller flat assemblies 44 are arranged side by side, so that two lugs can be synchronously processed, and the lug bending roller flat efficiency is further improved.

In some embodiments, tab bending roll-out mechanism 400 includes: the visual detection module 45 is mounted on the three-dimensional driving member, and is used for collecting the position information of the lugs at the two ends of the multiple electric cores, and the three-dimensional driving member transfers the lug bending roller flat assembly 44 to the positions corresponding to the lugs of the multiple electric cores according to the position information. The visual detection module 45 is arranged to further accurately control the actual position of the battery cell, and the operation position of the lug bending roller leveling mechanism 400 is adjusted in real time according to the actual position of the battery cell, so that the bending precision is further improved, the requirement on the positioning precision of the battery cell is reduced, and the production abnormality caused by positioning deviation is reduced.

As shown in fig. 6, the visual inspection module 45 is mounted on the execution end of the first linear actuator 41, and the inspection direction of the visual inspection module 45 is parallel to the driving direction of the second linear actuator 42 and faces the lifting mechanism 100 inside the conveyor belt.

The embodiment of the application provides a tab bending roll leveling method, which comprises the following steps:

the clamping mechanism clamps the plurality of battery cells in the tray from the upper part of the tray along the direction perpendicular to the conveying line so as to position the plurality of battery cells;

the clamping mechanism releases the clamping of the plurality of battery cores;

Preferably, in order to further improve the roller flat precision of bending, be equipped with visual detection module on the three-dimensional driving piece, before the roller flat mechanism is bent to the utmost point ear of a plurality of electric cores and roller flat processing is bent to utmost point ear, utilize visual detection module to carry out the roller flat mechanism position correction of bending of utmost point ear earlier, specifically include:

Referring to fig. 9, fig. 9 is a flowchart of a tab bending roll leveling method according to some embodiments of the present application, including the following steps:

s1: the jacking mechanism 100 jacks up a tray 200 on a conveying line, and the tray 200 is used for bearing a plurality of electric cores stacked side by side along the conveying direction of the conveying line;

s2: the clamping mechanism 300 clamps the plurality of battery cells in the tray 200 from above the tray 200 along the direction perpendicular to the conveying line so as to position the battery cells; optionally, according to the limitation degree of the practical operation space, the clamping mechanism 300 can clamp the plurality of battery cells and then lift the plurality of battery cells in the tray 200 to a fixed height, so that the three-dimensional driving piece drives the tab bending roller flat assembly 44 to perform tab bending roller to interfere with the bottom of the tray 200 at ordinary times;

s3: the visual detection module 45 collects position information of two end lugs of the multiple battery cores;

s4: the three-dimensional driving piece transfers the lug bending roller flat assembly 44 to positions corresponding to the lugs of the plurality of battery cores according to the position information;

s5: the three-dimensional driving piece drives the lug bending roller leveling assembly 44 to bend and roll-level the lugs of the plurality of battery cores;

s6: the clamping mechanism 300 releases the clamping of the plurality of cells within the tray 200;

s7: the jacking mechanism 100 descends to enable the tray 200 to descend to the conveying line, the tray 200 bears the battery core and conveys the battery core to a downstream station on the conveying line, and bending roll leveling of the tab is completed.

According to the technical scheme, the jacking mechanism is matched with the clamping mechanism, so that the battery cells in the tray on the conveying line can be positioned directly, the operation position of the lug bending roller leveling mechanism is corrected by adopting the visual detection module, and the bending precision is improved; the lug bending roller leveling assembly performs bending roller leveling operation on the lug, and the effect of the lug after bending is ensured.

Exemplary, tab bending roll flat assembly includes:

the first mounting plate 441 is fixed to the output end of the three-dimensional driving member; a first cylinder 442 fixed to the first mounting plate 441; a second mounting plate 443 connected to an output end of the first cylinder 442 to be capable of being extended or retracted by the driving of the first cylinder 442; a bending plate 446 fixed to the second mounting plate 443 for bending the tab of the battery cell; a second cylinder 444 fixed to the second mounting plate 443; the flattening block 445 is slidably sleeved on the bending plate 446 and connected to the output end of the second cylinder 444 so as to extend or retract under the drive of the second cylinder 444, and the flattening block 445 is used for flattening the bent tab; a third cylinder 448 fixed to the first mounting plate 441; the roller 4410 is connected to the output end of the third cylinder 448 to be capable of extending or retracting under the driving of the third cylinder 448, and the roller 4410 is used for flattening the flattened tab; the driving directions of the first cylinder 442, the second cylinder 444 and the third cylinder 448 are all perpendicular to the end face of the battery cell, on which the electrode lugs are arranged;

Wherein, three-dimensional driver drive utmost point ear roll-up subassembly 44 is bent and roll-up processing is carried out the utmost point ear of a plurality of electric cores, includes:

s51: the three-dimensional driving piece drives the lug bending roller flat assembly 44 to drive the bending plate 446 to translate along the direction parallel to the conveying line 600, and the first cylinder 442 drives the bending plate 446 to repeatedly extend and retract so as to sequentially bend a plurality of lugs;

s52: the three-dimensional driving piece drives the lug bending roller flat assembly 44 to drive the flattening block 445 to translate along the direction parallel to the conveying line 600, and the first cylinder 442 and the second cylinder 444 respectively drive the bending plate 446 and the flattening block 445 to repeatedly extend and retract so as to sequentially flatten a plurality of lugs;

s53: the three-dimensional driving piece drives the lug bending roller leveling assembly 44 to drive the roller 4410 to translate along the direction parallel to the conveying line 600, the third air cylinder 448 drives the roller 4410 to extend or retract, and when the roller 4410 extends, the three-dimensional driving piece drives the lug bending roller leveling assembly 44 to drive the roller 4410 to lift and move, and the plurality of lugs are sequentially leveled.

Wherein, three-dimensional driving piece drive utmost point ear roller flat subassembly 44 of bending and drive flattening block 445 translation along the direction that is parallel to transfer chain 600, first cylinder 442 and second cylinder 444 drive respectively and bend board 446 and flattening block 445 repeatedly stretch out and retract, flatten a plurality of utmost point ears in proper order, include the following steps:

The three-dimensional driving piece drives the lug bending roller flat assembly 44 to drive the flattening block 445 to translate along the direction parallel to the conveying line 600, so that the front end surface of the flattening block 445 is aligned with one bent lug;

the first cylinder 442 drives the bending plate 446 to extend until the front end surface of the bending plate 446 abuts against the bent tab and is maintained;

the second cylinder 444 drives the flattening block 445 to extend until the front end surface of the flattening block 445 and the bending plate 446 are propped against the same bent tab to flatten the tab;

the second cylinder 444 drives the flattening block 445 to retract, and the flattening block 445 is retracted to the initial position of the second cylinder 444 with respect to the bending plate 446;

the first cylinder 442 drives the bending plate 446 to retract to an initial position of the first cylinder 442 together with the flattening block 445 on the bending plate 446;

the three-dimensional driving member drives the tab bending roller leveling assembly 44 to drive the leveling block 445 to translate along the direction parallel to the conveying line 600, so that the front end surface of the leveling block 445 is aligned with the tab to be bent next, and the cycle is performed until all tabs are leveled.

Referring to fig. 1, 6, 7 and 8, two tab bending roller flat assemblies 44 are arranged side by side on the three-dimensional driving piece, and tab bending roller flat is carried out:

the three-dimensional driving piece drives the two lug bending roller flat assemblies 44 to be close to the battery cell lugs, the two bending plates 446 respectively correspond to the lugs of the two battery cells, the two first air cylinders 442 drive the two bending plates 446 to extend, the two bending plates 446 are positioned on the outer sides of the lugs corresponding to the two bending plates 446, the three-dimensional driving piece drives the two lug bending roller flat assemblies 44 to integrally translate a first fixed distance along the direction of the conveying line 600, and the two bending plates 446 respectively bend the two lugs on the battery cells; the two first cylinders 442 drive the two bending plates 446 to retract, the three-dimensional driving piece drives the two lug bending roller flat assemblies 44 to integrally translate a second fixed distance along the direction of the conveying line 600, the two bending plates 446 respectively correspond to the lugs of the other two battery cores, and all lugs are bent according to the circulation.

After the tabs are bent, the three-dimensional driving piece drives the tab bending roller flat assembly 44 to move, so that the two flattening blocks 445 respectively correspond to the tabs bent on the two electric cores, the first air cylinder 442 and the second air cylinder 444 sequentially drive the bending plate 446 and the flattening blocks 445 to stretch out, the front end face of the bending plate 446 and the front end face of the flattening blocks 445 sequentially press the bent tabs on the same bent tab face to flatten the bent tabs, then the second air cylinder 444 and the first air cylinder 442 sequentially drive the flattening blocks 445 and the bending plate 446 to retract, the three-dimensional driving piece drives the two tab bending roller flat assembly 44 to integrally translate along the direction of the conveying line 600, the two flattening blocks 445 respectively correspond to the tabs of the other two electric cores, and accordingly circulation is achieved to finish flattening of all the bent tabs.

After the tabs are bent, the three-dimensional driving piece drives the two tab bending roller flat assemblies 44 to drive the two rollers 4410 to move, the two rollers 4410 respectively correspond to the tabs flattened on the two battery cells, the two third air cylinders 448 drive the two rollers 4410 to extend to prop against the flattened tabs, the three-dimensional driving piece drives the two tab bending roller flat assemblies 44 to move from top to bottom along the vertical direction, the two rollers 4410 roll on the flattened tab surfaces from top to bottom, then the two third air cylinders 448 drive the two rollers 4410 to retract, the three-dimensional driving piece drives the two tab bending roller flat assemblies 44 to integrally translate along the direction of the conveying line 600, the two rollers 4410 respectively correspond to the tabs of the other two battery cells, and accordingly, all flattened tabs are flattened. The three-dimensional driving piece is matched with the lug bending roller flat assembly 44, and sequentially bends, flattens and rollers the lugs of the stacked battery cells, so that the lug bending effect is enhanced, and the degree of adherence of the lugs after bending is improved.

It should be noted that, without conflict, features in the embodiments of the present application may be combined with each other.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a utmost point ear roller flat station of bending which characterized in that includes:

the jacking mechanism is used for jacking a tray on the conveying line, and the tray is used for bearing a plurality of electric cores stacked side by side along the conveying direction of the conveying line;

the clamping mechanism is arranged above the jacking mechanism and used for clamping the plurality of battery cells in the tray along the direction perpendicular to the conveying line;

the tab bending roll leveling mechanism is used for bending and leveling the tabs of the plurality of battery cores;

the tab bending roll leveling mechanism comprises:

a three-dimensional driving member;

the lug bending roller flat assembly is arranged at the output end of the three-dimensional driving piece;

the tab bending roll flat assembly comprises:

the first mounting plate is fixed at the output end of the three-dimensional driving piece;

A first cylinder fixed to the first mounting plate;

the second mounting plate is connected to the output end of the first cylinder so as to extend or retract under the driving of the first cylinder;

the bending plate is fixed on the second mounting plate and is used for bending the lugs of the battery cell;

a second cylinder fixed to the second mounting plate;

the flattening block is slidably sleeved on the bending plate and connected to the output end of the second cylinder so as to extend or retract under the drive of the second cylinder, and is used for flattening the bent tab;

a third cylinder fixed to the first mounting plate;

the roller is connected to the output end of the third cylinder so as to extend or retract under the drive of the third cylinder, and is used for flattening the flattened tab;

the driving directions of the first cylinder, the second cylinder and the third cylinder are perpendicular to the end face of the battery cell, on which the electrode lugs are arranged.

2. A tab bending roll leveling station in accordance with claim 1 wherein said clamping mechanism comprises:

the lifting driving piece is arranged above the jacking mechanism;

the clamping plate is connected with the output end of the lifting driving piece so as to be capable of ascending or descending under the driving of the lifting driving piece;

The two clamping pieces are oppositely arranged on two opposite sides of the clamping plate in a sliding manner;

the opening and closing driving piece is arranged on the clamping plate and is configured to enable the two clamping pieces to move in opposite directions to clamp or move in opposite directions to open.

3. The tab bending roll leveling station of claim 1, wherein the tab bending roll leveling mechanism comprises:

the visual detection module is arranged on the three-dimensional driving piece and used for collecting position information of the lugs of the plurality of electric cores, and the three-dimensional driving piece transfers the lug bending roller flat assembly to positions corresponding to the lugs of the plurality of electric cores according to the position information.

4. The tab bending roll leveling station according to claim 1, wherein the tab bending roll leveling mechanism comprises two tab bending roll leveling assemblies, the two tab bending roll leveling assemblies are arranged side by side along the conveying direction of a conveying line, the three-dimensional driving piece comprises a first linear driving piece arranged along the X-axis direction, a second linear driving piece arranged along the Y-axis direction and a third linear driving piece arranged along the Z-axis direction, the driving direction of the first linear driving piece is parallel to the conveying direction of the conveying line, and the third linear driving piece is arranged at the executing end of the first linear driving piece; the second linear driving piece is arranged at the execution end of the third linear driving piece, and the execution end of the second linear driving piece is connected with the lug bending roller flat assembly.

5. The tab bending roll leveling station of claim 4, wherein the first linear drive is a single axis manipulator or a lead screw, and the second linear drive and the third linear drive are single axis manipulators.

6. The tab bending roll leveling method is characterized by comprising the following steps of:

the jacking mechanism jacks up a tray on a conveying line, and the tray is used for bearing a plurality of electric cores stacked side by side along the conveying direction of the conveying line;

the clamping mechanism clamps a plurality of battery cells in the tray from the upper side of the tray along the direction perpendicular to the conveying line so as to position the battery cells;

the clamping mechanism releases the clamping of the plurality of electric cores;

the jacking mechanism descends to enable the tray to descend to the conveying line, and the conveying line drives the tray to move to the next station;

The tab bending roll flat assembly comprises:

a first cylinder fixed to the first mounting plate;

a second cylinder fixed to the second mounting plate;

a third cylinder fixed to the first mounting plate;

the driving directions of the first cylinder, the second cylinder and the third cylinder are perpendicular to the end face of the battery cell, provided with the tab;

the three-dimensional driving piece drives the lug bending roller leveling component to bend and roll leveling the lugs of the plurality of battery cells, and the three-dimensional driving piece comprises:

The three-dimensional driving piece drives the lug bending roller flat assembly to drive the bending plate to translate along the direction parallel to the conveying line, and the first cylinder drives the bending plate to repeatedly extend and retract to sequentially bend the lugs of the multiple battery cores;

the three-dimensional driving piece drives the lug bending roller assembly to drive the flattening block to translate along the direction parallel to the conveying line, and the first air cylinder and the second air cylinder respectively drive the bending plate and the flattening block to repeatedly extend and retract so as to sequentially flatten the lugs of the multiple electric cores;

the three-dimensional driving piece drives the lug bending roller leveling assembly to drive the roller to translate along the direction parallel to the conveying line, the third air cylinder drives the roller to extend or retract, and when the roller extends, the three-dimensional driving piece drives the lug bending roller leveling assembly to drive the roller to lift and move, and the lugs of the plurality of battery cells are sequentially leveled.

7. The tab bending roll leveling method according to claim 6, wherein the three-dimensional driving member is provided with a visual detection module, and before the tab bending roll leveling mechanism bends and levels the tabs of the plurality of battery cells, the tab bending roll leveling mechanism position correction is performed by using the visual detection module, and specifically comprises:

and the three-dimensional driving piece drives the lug bending roller leveling assembly to bend and roll leveling the lugs of the plurality of battery cores.

8. The tab bending roller leveling method according to claim 6, wherein the three-dimensional driving member drives the tab bending roller leveling assembly to drive the leveling block to translate along a direction parallel to the conveying line, the first cylinder and the second cylinder respectively drive the bending plate and the leveling block to repeatedly extend and retract, and sequentially leveling tabs of the plurality of electric cores, the method comprises the following steps:

the three-dimensional driving piece drives the lug bending roller flat assembly to drive the flattening block to translate along the direction parallel to the conveying line, so that the front end face of the flattening block is aligned with a bent lug;

the first air cylinder drives the bending plate to extend until the front end surface of the bending plate abuts against the bent tab and is maintained;

The second cylinder drives the flattening block to extend out until the front end face of the flattening block and the bending plate are propped against the same bent lug to flatten the lug;

the first cylinder drives the bending plate and the flattening block on the bending plate to retract to the initial position of the first cylinder together;