Battery cell flattening device

Abstract

A battery cell rubbing device comprises a rotating tower which is arranged between a top plate and a bottom plate and can rotate around the axis of the rotating tower, and the rotating tower is provided with a plurality of rubbing modules which are arranged along the circumference; the kneading module comprises a battery cell clamping assembly and a kneading wheel assembly; the battery cell clamping assembly comprises a first mounting frame, a clamping jaw, a cam follower mounting frame and a first cam follower connecting rod, the first cam follower connecting rod is connected with a driving pressing rod and drives the driving pressing rod to move up and down, and the driving pressing rod is connected with a clamping jaw opening and closing transmission swing arm; the top of the clamping jaw opening and closing transmission swing arm is connected with the driving pressing rod, the bottom of the clamping jaw opening and closing transmission swing arm is connected with a horizontally-arranged piston rod, the other end of the piston rod is connected with a pair of swing arm push rods, and the front ends of the swing arm push rods are connected with clamping jaws respectively. The top of the first cam follower is provided with a clamping jaw cam follower, and the clamping jaw cam follower makes contact with the bottom face of the clamping jaw opening and closing cam and moves along the bottom face of the clamping jaw opening and closing cam when the rotating tower rotates to control opening and closing of the clamping jaw.

Description

Technical Field

[0001] The invention belongs to the technical field of lithium battery manufacturing equipment, and in particular relates to a battery cell flattening device. Background Art

[0002] With the rapid development of the lithium battery industry, the application of lithium batteries is becoming more and more extensive, and users have higher and higher requirements for battery quality. The lithium battery manufacturing process must also be continuously improved to meet people's needs. At present, a tab flattening process has been added to the preparation process of some lithium batteries. The tabs extending from the ends of the battery cells are flattened by the flattening wheel. After the battery cell clamp clamps the battery cell and moves it to the flattening station, it is flattened by the flattening wheel. If pneumatic grippers are used to clamp the battery cells, the opening and closing of the grippers must be controlled by cylinders, and cylinder control requires response time, which cannot meet the needs of improving equipment efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a high-efficiency and high-precision battery core flattening device.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A battery cell flattening device comprises: a top plate and a bottom plate spaced apart from each other, a clamping jaw opening and closing cam being arranged on the bottom surface of the top plate; a turret rotatably arranged between the top plate and the bottom plate around its own axis, a plurality of circumferentially arranged flattening modules being arranged on the turret; the flattening modules comprising a module mounting frame and a battery cell clamping assembly and a flattening wheel assembly arranged on the module mounting frame; the battery cell clamping assembly comprises a first mounting frame, a clamping jaw movably arranged on the first mounting frame, a cam follower mounting frame arranged on the module mounting frame, a first cam follower connecting rod movably arranged on the cam follower mounting frame up and down, the first cam follower connecting rod is connected to a driving pressure rod and drives the driving pressure rod to move up and down, the driving pressure rod is connected to an L-shaped clamping jaw opening and closing transmission swing arm, the clamping jaw opening The closing transmission swing arm can rotate around a horizontal rotating shaft, and the top of the clamping jaw opening and closing transmission swing arm is connected to the driving pressure rod, and the bottom is connected to a horizontally arranged piston rod, and the other end of the piston rod is connected to a pair of L-shaped swing arm push rods arranged on the first mounting frame through a vertical rotating shaft. The front end of each swing arm push rod is respectively connected to a clamping jaw, and drives the clamping jaw connected thereto to move horizontally, so that the clamping jaws approach or move away from each other; a clamping jaw cam follower is provided on the top of the first cam follower, and the clamping jaw cam follower contacts with the bottom surface of the clamping jaw opening and closing cam, and moves along the bottom surface of the clamping jaw opening and closing cam when the turret rotates, so as to control the opening and closing of the clamping jaw; the flattening wheel assembly includes a rotating frame and a plurality of groups of flattening wheels arranged on the rotating frame, and the flattening wheels are located below the clamping jaws.

[0006] In some embodiments, the smoothing wheel assembly also includes a lifting slide movably mounted on the module mounting frame, a second follower mounting frame movably mounted up and down, a smoothing cam follower mounted on the second follower mounting frame, and a second cam follower connecting rod connecting the second follower mounting frame and the lifting slide, the second follower mounting frame is located below the lifting slide, and the rotating frame is arranged on the lifting slide through a vertical rotating shaft; a smoothing cam is arranged on the bottom plate, the smoothing cam follower is in contact with the top surface of the smoothing cam, and moves along the top surface of the smoothing cam when the turret rotates, thereby controlling the lifting slide to move up and down.

[0007] In some embodiments, the turret is provided with a flattening wheel transmission gear and a plurality of flattening wheel transmission sub-gears meshing with the flattening wheel transmission gear and corresponding to each of the flattening modules, and the flattening wheel transmission sub-gears are located at the periphery of the flattening wheel transmission gear; the lifting slide is provided with a flattening wheel transmission shaft, and the flattening wheel transmission shaft is driven by a belt to rotate the rotating shaft connected to the rotating frame, and the flattening wheel transmission shaft is connected to the transmission shaft connected to the flattening wheel transmission sub-gear, and when the flattening wheel transmission sub-gear rotates, the rotating frame is driven to rotate.

[0008] In some embodiments, the flattening cam has an ascending section, a descending section and a straight section. A guide bar located above the flattening cam is provided at the starting position of the descending section. When the flattening cam follower moves to the descending section, it moves between the guide bar and the flattening cam.

[0009] In some embodiments, the first mounting frame can be movably arranged on the module mounting frame up and down, the bottom surface of the top plate is provided with a positioning cam, the top plate is provided with a fixed height lifting drive unit, and a lifting cam is provided below the fixed height lifting drive unit, the fixed height lifting drive unit can control the lifting cam to move up and down, and the lifting cam is provided with a gradually rising track slope; the module mounting frame is also provided with a positioning assembly, and the positioning assembly includes a lifting cam follower, a positioning cam follower, a third mounting frame, a third cam follower connecting rod, a fixed height shaft, a guide bearing frame, a positioning swing arm, a translation slider, a swing arm handle, a first positioning clamp arm, a second positioning clamp arm, a first single-tooth rotating block and a second single-tooth rotating block, the first single-tooth rotating block and the second single-tooth rotating block are respectively arranged at the ends of the first positioning clamp arm and the second positioning clamp arm, and the teeth of the first single-tooth rotating block and the second single-tooth rotating block are meshed, and the first positioning clamp arm and the second positioning clamp arm are The arms are respectively arranged on both sides of the fixed height shaft; the lifting cam follower is arranged on the follower bracket connected to the fixed height shaft, the fixed height shaft is connected to the guide bearing frame, the guide bearing frame is connected to the third cam follower connecting rod, and the third cam follower connecting rod is connected to the first mounting frame; the lifting cam follower cooperates with the lifting cam; the positioning cam follower is arranged on the top of the L-shaped positioning swing arm arranged on the third mounting frame through a rotating shaft, the bottom of the positioning swing arm is connected to the translation slider, a pair of spaced limit blocks are arranged on the translation slider, the interval between the limit blocks forms a track groove, and one end of the positioning swing arm is provided with a cam follower located in the track groove; the positioning cam follower contacts with the bottom surface of the positioning cam, and controls the first positioning clamping arm and the second positioning clamping arm to clamp the fixed height shaft or release the fixed height shaft during the process of moving along the bottom surface of the positioning cam when the turret rotates.

[0010] In some embodiments, a bearing seat is provided on the base plate, and a turret transmission shaft that drives the turret to rotate passes through the bearing seat and is connected to the turret; a turret transmission gear is provided below the base plate, and the turret transmission gear is provided at the bottom of the turret transmission shaft. When the turret transmission gear rotates, it drives the turret transmission shaft to rotate.

[0011] In some embodiments, a bearing seat is provided on the base plate, and a turret transmission shaft that drives the turret to rotate passes through the bearing seat and is connected to the turret; a turret transmission gear and a flattening wheel driving unit are provided below the base plate, and the turret transmission gear is provided at the bottom of the turret transmission shaft, and when the turret transmission gear rotates, it drives the turret transmission shaft to rotate; a flattening wheel driving transmission shaft is provided in the turret transmission shaft, and the flattening wheel driving transmission shaft passes through the turret transmission shaft, and the flattening wheel transmission gear and a second gear controlled to rotate by the flattening wheel driving unit are respectively provided at both ends.

[0012] In some embodiments, the top plate and the bottom plate are connected via connecting columns arranged at intervals along the circumference to form a fixed frame.

[0013] In some embodiments, a horizontally extending clamping jaw slide rail is disposed on the first mounting frame, and the clamping jaw is disposed on the clamping jaw slide rail and can move along the clamping jaw slide rail driven by the swing arm push rod.

[0014] In some embodiments, the kneading wheel assembly further comprises a second mounting frame disposed on the module mounting frame, and the second mounting frame is provided with a guide bearing for guiding the up and down movement of the second follower mounting frame.

[0015] It can be seen from the above technical scheme that the present invention is provided with a rotatable turret, and a plurality of kneading modules are arranged on the turret. The kneading modules are used to clamp the jaws of the battery cells through the mechanical drive of the cam structure. The connecting rod mechanism drives the piston rod to move backward in combination with the cam track transmission, and the piston rod moves backward to control the closing of the jaws. When the battery cells are kneaded, the jaws are controlled to maintain the clamping state through the cam control. After the battery cells are completely kneaded and flattened, the battery cells are handed over to the next station. At this time, the connecting rod mechanism drives the piston rod to move forward in combination with the cam track transmission, and the piston rod moves forward to control the opening of the jaws until the handover to the next station is completed. This mechanically driven jaw mechanism avoids the limitations of the cylinder control including the response time, improves the equipment efficiency, and ensures the accuracy of the equipment and products.

[0016] In some embodiments, a positioning assembly is also provided, and the positioning assembly also adopts a mechanical drive mode. The connecting rod mechanism combines with the cam trajectory to lift the clamping jaws, and then locks the height setting shaft to complete the height setting and positioning actions to improve the kneading accuracy and quality. Moreover, the positioning is a cam-driven mechanical structure, and does not adopt pneumatic components for control, which can avoid affecting the equipment efficiency due to the increase of reaction time due to the pneumatic structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the structure of a battery cell flattening device according to an embodiment of the present invention;

[0019] Figure 2 For along Figure 1 Sectional view along line AA;

[0020] Figure 3 This is a schematic structural diagram of the battery cell flattening device from another angle according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a turret according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic structural diagram of a flattening module according to an embodiment of the present invention;

[0023] Figure 6 This is a structural schematic diagram of the flattening module from another angle according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic structural diagram of a battery cell clamping assembly according to an embodiment of the present invention;

[0025] Figure 8 It is a structural schematic diagram of a battery cell clamping assembly from another angle according to an embodiment of the present invention;

[0026] Fig. 9 For along Figure 7 Sectional view along the midline BB;

[0027] Fig.10 This is a schematic structural diagram of a flattening wheel assembly according to an embodiment of the present invention;

[0028] Fig.11 It is a structural schematic diagram of the flattening wheel assembly from another angle according to an embodiment of the present invention;

[0029] Fig.12It is a structural schematic diagram of a positioning component according to an embodiment of the present invention;

[0030] Fig.13 This is a schematic structural diagram of a positioning assembly from another angle according to an embodiment of the present invention;

[0031] Fig.14 It is a schematic diagram of a positioning clamp arm clamping a height-fixing shaft according to an embodiment of the present invention.

[0032] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The present invention is described in detail below in conjunction with the accompanying drawings. When describing the embodiments of the present invention in detail, for the convenience of explanation, the drawings representing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. It should be noted that the drawings are simplified in form and use non-precise proportions, which are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention. At the same time, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated; the terms "positive", "negative", "bottom", "upper", "lower", "front", "back", "left", "right", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two elements, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4The battery cell flattening device of this embodiment includes a top plate 1, a bottom plate 2, a turret 3, a flattening wheel drive unit 5, a fixed height lifting drive unit 6, a flattening cam 7, a clamping jaw opening and closing cam 8, a positioning cam 9, a lifting cam 10 and a flattening module 11. The flattening cam 7, the clamping jaw opening and closing cam 8, and the positioning cam 9 of this embodiment are all in the shape of a ring. The surfaces where each cam and the cam follower contact are processed to different heights according to requirements, so that the cam follower can move up and down when moving along the cam surface, and convert this up and down movement into the action of the corresponding parts. The fixed height lifting drive unit 6 is arranged on the top plate 1, and the fixed height lifting drive unit 6 is connected to the lifting cam 10 through a connecting piece, and the lifting cam 10 can be controlled to rise or fall.

[0036] The top plate 1 and the bottom plate 2 are arranged at intervals in the upper and lower parts. The top plate 1 of this embodiment is connected to the equipment rack (not shown) through the bracket 12. The top plate 1 and the bottom plate 2 are connected through the connecting column 13, so that the top plate 1 and the bottom plate 2 form a fixed frame. The connecting columns 13 are evenly spaced along the circumference, and the top of the connecting column 13 is connected to the top plate 1, and the bottom is connected to the bottom plate 2.

[0037] The turret 3 can be rotatably arranged around its own axis between the top plate 1 and the bottom plate 2. Several groups of kneading modules 11 are arranged along the circumference of the turret 3. When the turret 3 rotates, the kneading modules 11 arranged thereon are driven to rotate together. The turret 3 of this embodiment is a three-layer rotating frame, and the components of the kneading modules 11 are correspondingly connected to the layers of the rotating frame, thereby being fixed to the rotating frame. In some embodiments, support rods 3-1 can be arranged between adjacent layers of the turret 3, and the stability of the rotating frame structure is maintained by the support rods 3-1.

[0038] In this embodiment, a bearing seat 14 is provided on the bottom plate 2, and a turret transmission shaft 15 passes through the bearing seat 14 and is connected to the turret 3. When the turret transmission shaft 15 rotates, the turret 3 is driven to rotate together. In this embodiment, a turret transmission gear 4 is provided below the bottom plate 2, and the turret transmission gear 4 is installed at the bottom of the turret transmission shaft 15. The turret transmission gear 4 can rotate under the drive of the turret rotation drive unit (not shown), thereby driving the turret 3 to rotate through the turret transmission shaft 15.

[0039] like Figure 5 and Figure 6As shown, the flattening module 11 of this embodiment includes a module mounting frame 11-1 and a battery cell clamping assembly 11-2, a flattening wheel assembly 11-3 and a positioning assembly 11-4 arranged on the module mounting frame 11-1. The battery cell clamping assembly 11-2 is located above the flattening wheel assembly 11-3 (flattening wheel), and its function is to clamp the battery cell so that the battery cell remains in a fixed position, thereby facilitating the flattening operation of the flattening wheel on the end of the battery cell. The function of the positioning assembly 11-4 is to lift the clamping claws in the battery cell clamping assembly 11-2 to a uniform height before flattening begins, and to maintain the height position of the battery cell clamping assembly 11-2. After the clamping claws that clamp the battery cell are lifted, the clamping claws will be kept at this height for flattening.

[0040] Combination Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 The battery cell clamping assembly 11-2 of this embodiment includes a clamping jaw 11-2a, a first mounting frame 11-2b, a clamping jaw opening and closing transmission swing arm 11-2c, a driving pressure rod 11-2d, a first cam follower mounting frame 11-2e, a first cam follower connecting rod 11-2f, a piston rod 11-2g, a swing arm push rod 11-2h and a clamping jaw slide rail 11-2i.

[0041] A pair of clamping jaws 11-2a are movably arranged on the first mounting frame 11-2b. When the clamping jaws 11-2a are translated, they can be moved closer to each other to clamp the battery cell, or moved away from each other to release the battery cell. The first mounting frame 11-2b is movably arranged on the module mounting frame 11-1. In this embodiment, a first longitudinal guide rail 11-1a extending in the vertical direction is arranged on the side plate of the module mounting frame 11-1. The first mounting frame 11-2b is arranged on the first longitudinal guide rail 11-1a and can move up and down along the first longitudinal guide rail 11-1a.

[0042] The cam follower mounting frame 11-2e is arranged on the top plate of the module mounting frame 11-1, and the first cam follower connecting rod 11-2f is arranged on the cam follower mounting frame 11-2e so as to be movable up and down. A clamping cam follower (not shown) is arranged on the top of the first cam follower connecting rod 11-2f, and the first cam follower connecting rod 11-2f is connected to the driving pressure rod 11-2d through a connecting member. The clamping cam follower is a driving component for the clamping jaw opening and closing control, and it contacts the bottom surface of the clamping jaw opening and closing cam 8 fixed on the top plate 1. When the turret 3 rotates, it will drive the flattening module 11 to rotate together. The clamping jaw cam follower contacts the bottom surface of the clamping jaw opening and closing cam 8 during the rotation process, and in the process of moving along the bottom surface of the clamping jaw opening and closing cam 8, it moves up and down along the undulating shape of the bottom surface of the clamping jaw opening and closing cam 8, thereby driving the first cam follower connecting rod 11-2f to move up and down. When the first cam follower connecting rod 11-2f moves up and down, it also drives the driving pressure rod 11-2d connected thereto to move up and down.

[0043] The bottom end of the driving pressure rod 11-2d is connected to the L-shaped clamping jaw opening and closing transmission swing arm 11-2c, and the bottom of the clamping jaw opening and closing rotation swing arm 11-2c is connected to a horizontally arranged piston rod 11-2g. The clamping jaw opening and closing transmission swing arm 11-2c can rotate around a horizontally arranged rotation axis a. When the top of the clamping jaw opening and closing transmission swing arm 11-2c moves up and down, the clamping jaw opening and closing transmission swing arm 11-2c rotates around the rotation axis a. When rotating, the bottom of the clamping jaw opening and closing transmission swing arm 11-2c moves in the horizontal direction, thereby converting the up and down movement of the driving pressure rod 11-2d into the forward and backward movement of the piston rod 11-2g in the horizontal direction.

[0044] The axial direction of the piston rod 11-2g is in the horizontal direction. Fig. 9 As shown, the other end of the piston rod 11-2g (the end not connected to the rotating swing arm 11-2c) is connected to a pair of L-shaped swing arm push rods 11-2h. The swing arm push rod 11-2h is set on the first mounting frame 11-2b through the rotating shaft a. When the piston rod 11-2g moves horizontally back and forth, it drives the two swing arm push rods 11-2h to open or close. The front end of each swing arm push rod 11-2h is respectively connected to a clamping claw 11-2a. When the swing arm push rod 11-2h is opened or closed, it drives the clamping claw 11-2a connected thereto to move horizontally, so that the two clamping claws 11-2a are close to each other or away from each other. When they are close to each other, the clamping claw 11-2a can clamp the battery cell. In a specific application, a horizontally extending clamping jaw slide rail 11-2i is provided on the first mounting frame 11-2b, and the clamping jaw 11-2a is provided on the clamping jaw slide rail 11-2i and moves along the clamping jaw slide rail 11-2i driven by the swing arm push rod 11-2h.

[0045] like Fig.10 and Fig.11As shown, the kneading wheel assembly 11-3 of this embodiment includes a kneading cam follower 11-3a, a lifting slide 11-3b, a kneading wheel 11-3c, a second mounting frame 11-3d and a kneading wheel transmission shaft 11-3e. The kneading wheel transmission shaft 11-3e of this embodiment adopts a spline shaft.

[0046] A plurality of groups of flattening wheels 11-3c are arranged on a rotating frame 11-3f, and the flattening wheels 11-3c are arranged at intervals along the circumference. The rotating frame 11-3f is arranged on the lifting slide 11-3b through a rotating shaft a. When the rotating frame 11-3f rotates, it drives the plurality of groups of flattening wheels 11-3c arranged thereon to rotate together. During the rotation process, the flattening wheels 11-3c flatten the ends of the battery cells. The rotating shaft a of this embodiment is connected to the flattening wheel transmission shaft 11-3e through a belt b. When the flattening wheel transmission shaft 11-3e rotates, the belt b drives the rotating shaft a to rotate, and the rotating shaft a then drives the rotating frame 11-3f to rotate.

[0047] The lifting slide 11-3b can be slidably arranged on the module mounting frame 11-1. In this embodiment, a second longitudinal guide rail 11-1b extending in the vertical direction is arranged on the side plate of the module mounting frame 11-1, and the lifting slide 11-3b is arranged on the second longitudinal guide rail 11-1b and can move up and down along the second longitudinal guide rail 11-1b.

[0048] In this embodiment, a second mounting frame 11-3d is arranged on the module mounting frame 11-1, and the second mounting frame 11-3d is fixed to the module mounting frame 11-1. A guide bearing 11-3g is arranged on the second mounting frame 11-3d, and the kneading cam follower 11-3a is arranged on the second follower mounting frame 11-3h. The second follower mounting frame 11-3h is connected to the lifting slide 11-3b through the second cam follower connecting rod 11-3i, and the guide bearing 11-3g guides the up and down movement of the second follower mounting frame 11-3h. The kneading cam follower 11-3a contacts the top surface of the kneading cam 7 fixed on the bottom plate 2. When the turret 3 rotates, it drives the flattening module 11 to rotate together, and the flattening cam follower 11-3a contacts the top surface of the flattening cam 7 during the rotation process, and in the process of moving along the top surface of the flattening cam 7, it drives the second cam follower connecting rod 11-3i to move up and down along the undulating shape of the top surface of the flattening cam 7. When the second cam follower connecting rod 11-3i moves up and down, it drives the lifting slide 11-3b to move up and down, so that the flattening wheel 11-3c can flatten the battery cell up and down.

[0049] In order to control the lifting slide 11-3b to move up and down, the flattening cam 7 is processed into different heights, with an ascending section, a descending section and a straight section, and the height of the straight section remains unchanged. When the flattening cam follower 11-3a moves along the ascending section, it pushes the lifting slide 11-3b upward, and when it moves along the descending section, it pulls the lifting slide 11-3b downward. When it moves along the straight section, the height of the lifting slide 11-3b remains unchanged. When the kneading cam follower 11-3a moves to the descending section of the top surface of the kneading cam 7, in order to ensure that the kneading cam follower 11-3a has a smooth and smooth movement process, preferably, a guide bar 7-1 is provided at the starting position of the descending section of the top surface of the kneading cam 7. The guide bar 7-1 is located above the kneading cam 7 and is correspondingly arranged near the starting position of the descending section. When the kneading cam follower 11-3a moves near the descending section, it will move between the guide bar 7-1 and the top surface of the kneading cam 7. At this time, the guide bar 7-1 can guide the kneading cam follower 11-3a to move along the descending section to prevent the kneading cam follower 11-3a from failing to descend effectively.

[0050] In order to simplify the transmission structure, the rotating frames 11-3f of each flattening module 11 in this embodiment are driven to rotate by the same flattening wheel driving unit 5. Figure 1 , Figure 2 and Figure 4 As shown, the kneading wheel driving unit 5 of the present embodiment is arranged below the bottom plate 2, and the kneading wheel driving unit 5 adopts a motor, and the output shaft of the motor is provided with a first gear c, and the first gear c and the second gear b are meshed, and the second gear b is arranged at the bottom end of the kneading wheel driving transmission shaft 16, and the motor drives the first gear c to rotate, and the first gear c drives the second gear b meshed therewith to rotate, and the second gear b drives the kneading wheel driving transmission shaft 16 to rotate.

[0051] The kneading wheel driving transmission shaft 16 of this embodiment is arranged in the turret transmission shaft 15 through a bearing, and the kneading wheel driving transmission shaft 16 passes through the turret transmission shaft 15. A kneading wheel transmission gear 17 is arranged at the end of the kneading wheel driving transmission shaft 16 extending out of the turret transmission shaft 15. When the kneading wheel transmission shaft 16 rotates, the kneading wheel transmission gear 17 is driven to rotate.

[0052] The flattening wheel transmission gear 17 is meshed with a plurality of flattening wheel transmission sub-gears 18, and the flattening wheel transmission sub-gears 18 are located at the periphery of the flattening wheel transmission gear 17. One flattening wheel transmission sub-gear 18 corresponds to a flattening wheel assembly 11-3 of a flattening module 11, and is used to drive the rotation of the rotating frame 11-3f in the flattening wheel assembly 11-3 of the flattening module 11. The flattening wheel transmission sub-gear 18 is arranged on the layer plate of the turret 3, and the flattening wheel transmission sub-gear 18 is connected to a spline shaft (transmission shaft), and the spline shaft and the flattening wheel transmission shaft 11-3e are connected through a coupling. When the flattening wheel transmission sub-gear 18 rotates, the rotating frame 11-3f can be driven to rotate through the spline shaft. This embodiment can drive the flattening wheels in multiple groups of flattening modules to rotate and flatten through a set of driving units, thereby reducing the number of driving units, simplifying the structure, and the mechanical transmission structure can ensure the synchronous rotation of the flattening wheels of each group of flattening modules.

[0053] like Fig.12 and Fig.13 As shown, the positioning assembly 11-4 of this embodiment includes a lifting cam follower 11-4a, a positioning cam follower 11-4b, a third mounting frame 11-4c, a third cam follower connecting rod 11-4d, a height-fixing shaft 11-4e, a guide bearing frame 11-4f, a positioning swing arm 11-4g, a translation slider 11-4h, a swing arm handle 11-4i, a first positioning clamping arm 11-4k, a second positioning clamping arm 11-4l, a first single-tooth rotating block 11-4m and a second single-tooth rotating block 11-4n, and the two single-tooth rotating blocks are respectively arranged at the ends of the two positioning clamping arms 11-4k, and the teeth of the two single-tooth rotating blocks are meshed with each other.

[0054] The lifting cam follower 11-4a is arranged on the follower bracket 11-4q, the follower bracket 11-4b is connected to the height-fixing shaft 11-4e, the height-fixing shaft 11-4e is connected to the guide bearing frame 11-4f, the guide bearing frame 11-4f is connected to the third cam follower connecting rod 11-4d, and the third cam follower connecting rod 11-4d is connected to the first mounting frame 11-2b of the battery cell clamping assembly 11-2.

[0055] The lifting cam follower 11-4a cooperates with the lifting cam 10 located below the top plate 1 to realize the uniform lifting of the battery cell clamping assembly 11-2 of each flattening module 11 to a preset height. The lifting cam 10 is processed with a gradually rising track slope. When the lifting cam follower 11-4a rotates with the turret 3 to the position of the lifting cam 10, it will move upward along the track slope. At the same time, under the control of the fixed height lifting drive unit 6, the lifting cam 10 also moves upward for a distance, thereby realizing the upward lifting of the battery cell clamping assembly 11-2.

[0056] The positioning cam follower 11-4b is arranged at the top of the L-shaped positioning swing arm 11-4g, and the positioning swing arm 11-4g is arranged on the third mounting frame 11-4c through the rotating shaft a, and the bottom is connected to the translation slider 11-4h. The positioning cam follower contacts the bottom surface of the positioning cam 9 fixed on the top plate 1. When the turret 3 rotates, it will drive the flattening module 11 to rotate together. The positioning cam follower 11-4b contacts the bottom surface of the positioning cam 9 during the rotation process, and in the process of moving along the bottom surface of the positioning cam 9, the top of the positioning swing arm 11-4g is driven to move up and down along the undulating shape of the bottom surface of the positioning cam 9. Since the positioning swing arm 11-4g is L-shaped, when its top moves up and down, it drives the positioning swing arm 11-4g to rotate around the rotating shaft a, converting the up and down movement of the top into the horizontal movement of the bottom, and then drives the translation slider 11-4h to move horizontally on the third mounting frame 11-4c.

[0057] A pair of spaced limit blocks 11-4j are provided on the translation slider 11-4h, and the space between the limit blocks 11-4j forms a track groove. A cam follower e is provided at one end of the positioning swing arm 11-4c, and the cam follower e is located in the track groove between the limit blocks 11-4j. When the translation slider 11-4h moves horizontally with the positioning swing arm 11-4g, the positioning swing arm 11-4c also swings. In this embodiment, a horizontally extending transverse guide rail g is provided on the third mounting frame 11-4c, and the translation slider 11-4h is provided on the transverse guide rail g and can move along the transverse guide rail g.

[0058] like Fig.14 As shown, the first positioning clamp arm 11-4k and the second positioning clamp arm 11-4l are respectively arranged on both sides of the height-fixing shaft 11-4e. The other end of the positioning swing arm 11-4c (the end without the cam follower) is connected to the first single-tooth rotating block 11-4m. When the positioning swing arm 11-4c swings horizontally driven by the translation slider 11-4h, it will drive the first single-tooth rotating block 11-4m to rotate. When rotating, the tooth portion of the first single-tooth rotating block 11-4m will hit the tooth portion on the second single-tooth rotating block 11-4n, driving the second single-tooth rotating block 11-4n to rotate. When the two single-tooth rotating blocks rotate, the two positioning clamp arms are driven to open or close. When closed, the positioning clamp arms clamp the height-fixing shaft 11-4e, so that the height-fixing shaft 11-4e cannot move up and down, so that the raised battery cell clamping assembly 11-2 is maintained at the raised height, so that the flattening wheel can flatten the battery cell.

[0059] The operation process of the battery cell flattening device of this embodiment will be described below in conjunction with the accompanying drawings.

[0060] When the turret 3 rotates, it will drive the flattening modules 11 arranged thereon to pass through the battery cell loading station and the lifting station in sequence, and during the rotation process, the flattening wheel assembly 11-3 flattens the battery cell, and at the unloading station, the battery cell clamping assembly 11-3 releases the battery cell.

[0061] Specifically, when the turret transmission gear 4 is driven by the turret rotation drive unit to rotate, it drives the turret transmission shaft 15 to rotate, and the turret transmission shaft 15 drives the turret 3 to rotate together.

[0062] When the turret 3 rotates, the flattening module 11 also rotates. During this process, the jaw cam follower contacts the bottom surface of the jaw opening and closing cam 8, and drives the first cam follower connecting rod 11-2f to move up and down along the shape of the bottom surface of the jaw opening and closing cam 8. The up and down movement of the first cam follower connecting rod 11-2f is transmitted to the piston rod 11-2g through the driving pressure rod 11-2d and the jaw opening and closing transmission swing arm 11-2c, and converted into the horizontal forward and backward movement of the piston rod 11-2g. The piston rod 11-2g drives the jaws 11-2a to move closer to each other through a pair of swing arm push rods 11-2h, thereby clamping the battery cell sent from the previous station. This embodiment controls the opening and closing of the jaws by a mechanical method of cam transmission, which solves the problem that the efficiency of the pneumatic jaws is affected by the reaction time. Moreover, the shape of the bottom surface of the jaw opening and closing cam 8 can be used to control the jaws to maintain a clamping state until the battery cell is flattened. The jaw cam follower then changes its movement trajectory as the shape of the bottom surface of the jaw opening and closing cam 8 changes, causing the jaws to release the battery cell.

[0063] As the turret 3 rotates, when the flattening module 11 clamping the battery cell comes to the lifting station, the lifting cam follower 11-4a and the lifting cam 10 cooperate, and the lifting cam follower 11-4a moves along the track slope on the lifting cam 10. At the same time, the fixed height lifting drive unit 6 will also control the lifting cam 10 to rise to a preset height, thereby realizing the fixed height lifting of the battery cell clamping assembly 11-3 (grip) to ensure the accuracy of battery cell flattening.

[0064] When the clamping claws that clamp the battery cell complete the lifting action, the two positioning clamping arms in the positioning assembly 11-4 clamp the finalization shaft 11-4e as the positioning cam follower 11-4b moves along the bottom surface of the positioning cam 9, so that the first mounting frame 11-2b connected to the height-fixing shaft 11-4e through the third cam follower connecting rod 11-4d cannot move up and down, but maintains a constant height, so that the flattening wheel can flatten the battery cell, ensure stability during the flattening process, and ensure the flattening accuracy.

[0065] The clamping jaws of this embodiment are mechanically driven, and the connecting rod mechanism is combined with the cam track transmission to drive the piston rod to move backward, and the piston rod is used to move backward to control the closing of the clamping jaws. When the battery cell is flattened, the clamping jaws are controlled by the cam to maintain the clamping state. After the battery cell is completely flattened, the battery cell is handed over to the next station. At this time, the connecting rod mechanism is combined with the cam track transmission to drive the piston rod to move forward, and the piston rod is used to move forward to control the opening of the clamping jaws until the handover to the next station is completed. This mechanically driven clamping jaw mechanism avoids the limitations of cylinder control including response time, improves equipment efficiency, and ensures equipment and product accuracy. In some embodiments, a positioning component is provided, and the positioning component is also mechanically driven. The connecting rod mechanism is combined with the cam track to lift the clamping jaws, and then locks the height setting shaft to complete the height setting and positioning actions to improve the flattening accuracy and quality. Moreover, the positioning is a cam-driven mechanical structure, and pneumatic components are not used for control, which can avoid affecting the equipment efficiency due to the increase in reaction time of the pneumatic structure.

[0066] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery cell flattening device, characterized in that: include: A top plate and a bottom plate are arranged at intervals up and down, and a clamping jaw opening and closing cam is arranged on the bottom surface of the top plate; A turret is rotatably arranged around its own axis between the top plate and the bottom plate, and the turret is provided with a plurality of groups of kneading dies arranged along the circumference; The flattening module comprises a module mounting frame, and a cell clamping assembly and a flattening wheel assembly arranged on the module mounting frame; The battery cell clamping assembly comprises a first mounting frame, a clamping jaw which can be horizontally movably arranged on the first mounting frame, a cam follower mounting frame arranged on the module mounting frame, and a first cam follower connecting rod which can be movably arranged on the cam follower mounting frame up and down, the first cam follower connecting rod is connected to a driving pressure rod and drives the driving pressure rod to move up and down, the driving pressure rod is connected to an L-shaped clamping jaw opening and closing transmission swing arm, the clamping jaw opening and closing transmission swing arm can rotate around a horizontal rotating shaft, the top of the clamping jaw opening and closing transmission swing arm is connected to the driving pressure rod, and the bottom is connected to a horizontally arranged piston rod, the other end of the piston rod is connected to a pair of L-shaped swing arm push rods which are arranged on the first mounting frame through a vertical rotating shaft, the front end of each swing arm push rod is respectively connected to one of the clamping jaws, and respectively drives the clamping jaws connected thereto to move horizontally, so that the clamping jaws are close to or away from each other; A jaw cam follower is provided on the top of the first cam follower, the jaw cam follower contacts the bottom surface of the jaw opening and closing cam, and moves along the bottom surface of the jaw opening and closing cam when the turret rotates to control the opening and closing of the jaw; The kneading wheel assembly comprises a rotating frame and a plurality of kneading wheels arranged on the rotating frame, and the kneading wheels are located below the clamping claws.

2. The battery core flattening device according to claim 1, characterized in that: The kneading wheel assembly also includes a lifting slide movably arranged on the module mounting frame, a second follower mounting frame movably arranged on the module mounting frame, a kneading cam follower arranged on the second follower mounting frame, and a second cam follower connecting rod connecting the second follower mounting frame and the lifting slide, wherein the second follower mounting frame is located below the lifting slide, and the rotating frame is arranged on the lifting slide through a vertical rotating shaft; A flattening cam is arranged on the bottom plate, and the flattening cam follower contacts the top surface of the flattening cam and moves along the top surface of the flattening cam when the turret rotates, thereby controlling the lifting slide to move up and down.

3. The battery core flattening device according to claim 2, characterized in that: The turret is provided with a flattening wheel transmission gear and a plurality of flattening wheel transmission sub-gears meshing with the flattening wheel transmission gear and corresponding to each of the flattening modules, wherein the flattening wheel transmission sub-gears are located at the periphery of the flattening wheel transmission gear; The lifting slide is provided with a flattening wheel transmission shaft, and the flattening wheel transmission shaft drives the rotating shaft connected to the rotating frame to rotate through a belt. The flattening wheel transmission shaft is connected to a transmission shaft connected to the flattening wheel transmission sub-gear. When the flattening wheel transmission sub-gear rotates, the rotating frame is driven to rotate.

4. The battery core flattening device according to claim 1, characterized in that: The flattening cam has an ascending section, a descending section and a straight section. A guide bar located above the flattening cam is provided at the starting position of the descending section. When the flattening cam follower moves to the descending section, it moves between the guide bar and the flattening cam.

5. The battery core flattening device according to claim 1, characterized in that: The first mounting frame is movably arranged on the module mounting frame, the bottom surface of the top plate is provided with a positioning cam, a fixed height lifting driving unit is provided on the top plate, a lifting cam is provided below the fixed height lifting driving unit, the fixed height lifting driving unit can control the lifting cam to move up and down, and a gradually rising track slope is provided on the lifting cam; The module mounting frame is also provided with a positioning assembly, and the positioning assembly includes a lifting cam follower, a positioning cam follower, a third mounting frame, a third cam follower connecting rod, a height-fixing shaft, a guide bearing frame, a positioning swing arm, a translation slider, a swing arm handle, a first positioning clamp arm, a second positioning clamp arm, a first single-tooth rotating block and a second single-tooth rotating block, the first single-tooth rotating block and the second single-tooth rotating block are respectively arranged at the ends of the first positioning clamp arm and the second positioning clamp arm, and the teeth of the first single-tooth rotating block and the second single-tooth rotating block are meshed, and the first positioning clamp arm and the second positioning clamp arm are respectively arranged on both sides of the height-fixing shaft; The lifting cam follower is arranged on a follower bracket connected to the height setting shaft, the height setting shaft is connected to the guide bearing frame, the guide bearing frame is connected to the third cam follower connecting rod, the third cam follower connecting rod is connected to the first mounting frame; the lifting cam follower cooperates with the lifting cam; The positioning cam follower is arranged on the top of an L-shaped positioning swing arm which is arranged on the third mounting frame through a rotating shaft, the bottom of the positioning swing arm is connected to the translation slider, a pair of spaced limit blocks are arranged on the translation slider, the space between the limit blocks forms a track groove, and one end of the positioning swing arm is provided with a cam follower located in the track groove; The positioning cam follower contacts the bottom surface of the positioning cam, and controls the first positioning clamping arm and the second positioning clamping arm to clamp the height-fixing shaft or release the height-fixing shaft during the process of moving along the bottom surface of the positioning cam when the turret rotates.

6. The battery core flattening device according to claim 1, characterized in that: A bearing seat is arranged on the bottom plate, and a turret transmission shaft driving the turret to rotate passes through the bearing seat and is connected to the turret; A turret transmission gear is arranged below the bottom plate, and the turret transmission gear is arranged at the bottom of the turret transmission shaft. When the turret transmission gear rotates, the turret transmission shaft is driven to rotate.

7. The battery core flattening device according to claim 3, characterized in that: A bearing seat is arranged on the bottom plate, and a turret transmission shaft driving the turret to rotate passes through the bearing seat and is connected to the turret; A turret transmission gear and a flattening wheel driving unit are provided below the bottom plate, wherein the turret transmission gear is provided at the bottom of the turret transmission shaft, and when the turret transmission gear rotates, the turret transmission shaft is driven to rotate; A flattening wheel driving transmission shaft is arranged in the turret transmission shaft, and the flattening wheel driving transmission shaft passes through the turret transmission shaft, and the flattening wheel transmission gear and the second gear controlled to rotate by the flattening wheel driving unit are respectively arranged at both ends.

8. The battery core flattening device according to claim 1, characterized in that: The top plate and the bottom plate are connected via connecting columns arranged at intervals along the circumference to form a fixed frame.

9. The battery core flattening device according to claim 1, characterized in that: The first mounting frame is provided with a horizontally extending clamping claw slide rail, the clamping claw is arranged on the clamping claw slide rail, and can move along the clamping claw slide rail driven by the swing arm push rod.

10. The battery core flattening device according to claim 2, characterized in that: The kneading wheel assembly further comprises a second mounting frame arranged on the module mounting frame, and the second mounting frame is provided with a guide bearing for guiding the up and down movement of the second follower mounting frame.

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