A multi-layer battery cell unstacking device preventing foam adhesion of a carrier plate

Abstract

This invention relates to the field of battery cell manufacturing technology and provides a multi-layer battery cell destacking device to prevent foam carrier plate adhesion. The device includes a base, a side feeding unit, a top moving unit, a stacking frame, a stacking mechanism, a lifting unit, a gripping frame, a gripping mechanism, and a pressure relief unit. The pressure relief unit includes a bottom pressure relief mechanism and a side pressure relief mechanism. The stacking mechanism vertically staggers the foam carrier plates to form a bottom pressure relief space. The side pressure relief mechanism is lower than the gripping mechanism and preferentially weaves into the side gap between the battery cell and the receiving groove to release lateral negative pressure and press the foam carrier plate firmly. The two bottom pressure relief mechanisms utilize the staggered bottom pressure relief space to complete the action logic of first rotating and aligning, then piercing and lifting upwards, and opening the bottom fitting gap of the battery cell to release bottom negative pressure. The combined side and bottom pressure relief structure eliminates the negative pressure adsorption throughout the foam carrier plate groove, solving the problems of battery cell collapse, adhesion, and misalignment damage, thus improving the destacking yield and operational stability.

Description

Technical Field

[0001] This invention belongs to the field of battery cell production technology, and in particular relates to a multi-layer battery cell destacking device to prevent foam carrier board adhesion. Background Technology

[0002] In the production process of pouch cells, the cells are placed inside the receiving slots of foam carriers for transfer and buffering. Multiple foam carriers containing cells are stacked vertically, and a destacking mechanism is needed to remove the cells one by one from the foam carriers. The receiving slots of the foam carriers fit tightly against the outer walls of the cells. After multiple layers are stacked and compacted, a sealed space is formed between the cells and the side walls and bottom of the receiving slots. During the gripping operation, negative pressure adsorption and adhesion can easily occur. Forced gripping can cause the cells to collapse, damage the aluminum-plastic film, or misalign the electrode sheets. It can also cause the foam carriers to be pulled up by adhesion.

[0003] Existing multi-layer battery cell destacking devices for preventing foam carrier board adhesion include a frame, a moving gripping mechanism, and a lateral gap pressure relief assembly. The moving mechanism drives the gripping mechanism and the lateral pressure relief plate to move. The pressure relief plate inserts into the lateral gap between the battery cell and the foam carrier board, breaking the lateral sealed space and releasing the lateral negative pressure. Then, the grippers hold the battery cell to complete the material removal. A conveying mechanism stacks the foam carrier boards flat, with the pallets aligned vertically. The pressure relief assembly can only release pressure through the gaps around the battery cell. However, existing devices still have certain technical shortcomings in practical applications:

[0004] Firstly, the pallets are arranged in a flat, stacked manner. There is no clearance space at the bottom of the stacking frame for the bottom piercing mechanism to operate. Only lateral gap pressure relief can be achieved. The negative pressure of the surface-to-surface contact between the bottom of the battery cell and the bottom of the foam carrier plate cannot be relieved, and residual negative pressure still exists. The adhesion fault cannot be completely eliminated.

[0005] Secondly, the lack of pressure limiting for the foam carrier plate during the depressurization operation means that if a lifting depressurization structure is added at the bottom, the lifting reaction force can easily cause the foam carrier plate to float and shift, resulting in poor stability of the work position.

[0006] Therefore, in view of the above situation, there is an urgent need to develop a multi-layer battery cell destacking device that prevents foam carrier board adhesion, so as to overcome the shortcomings in current practical applications. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the purpose of this invention is to provide a multi-layer battery cell destacking device that prevents foam carrier board adhesion, thereby solving the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A multi-layer battery cell destacking device for preventing foam carrier board adhesion includes a device base, a side feeding unit, and a top moving unit. The device base has symmetrically fixed stacking frames, and stacking mechanisms are vertically mounted on the inner sides of both stacking frames. Each foam carrier board has a receiving groove in the middle for placing and positioning the battery cells. In the vertically stacked state, adjacent foam carrier boards are arranged in a staggered front-to-back arrangement, forming a staggered bottom pressure relief space after stacking. A lifting unit is fixed on the device base, positioned between the two stacking frames and working in conjunction with the side feeding unit. The top moving unit is mounted above the stacking frames, and a gripping frame is fixedly connected to its output end. A gripping mechanism is mounted on the bottom of the gripping frame. The device also includes:

[0010] The pressure relief unit consists of two bottom pressure relief mechanisms and several side pressure relief mechanisms. The two bottom pressure relief mechanisms are symmetrically fixed on the front and rear outer walls of the stacking rack. The bottom pressure relief mechanisms face the foam carrier plates stacked to form a bottom pressure relief space and a destacking station at the top of the stacking rack. Each of the two bottom pressure relief mechanisms consists of a side bracket, a control component, a drive control component, and a piercing component. The side brackets are symmetrically fixed on the front and rear outer walls of the stacking rack and face the destacking station at the top of the stacking rack. Each side bracket has two control components and one drive control component on its inner side. The two control components are symmetrically assembled on the inner wall of a single side bracket. A piercing component is fixed on the output end of each of the two control components. The piercing component is arranged perpendicular to the bottom end face of the foam carrier plate. The power input ends of the two control components on the same side bracket are connected to a drive control component to form a transmission cooperation. The drive control component is fixedly installed in the middle of the inner wall of the side bracket.

[0011] Several lateral pressure relief mechanisms are evenly distributed and assembled on the bottom of the gripping frame according to the outer dimensions of the battery cell. The pressure relief end of the lateral pressure relief mechanism is matched with the lateral fitting gap between the side wall of the battery cell and the wall of the foam carrier plate receiving groove. Furthermore, the vertical lowest point of the pressure relief end of the lateral pressure relief mechanism is lower than the vertical lowest point of the gripping end of the gripping mechanism.

[0012] As a further technical solution of the present invention, the control component includes a fixed frame, a screw, a control sleeve, a threaded sleeve, and a rotating bracket. The fixed frame is fixed on the inner wall of the side bracket. The screw is vertically rotatably mounted on the fixed frame and is connected to the drive control component. The control sleeve is coaxially disposed on the outer side of the screw and fixed on the fixed frame. A limit groove is formed on the side wall of the control sleeve. The threaded sleeve is threaded onto the outer wall of the screw. A rotating bracket is horizontally fixed on the outer wall of the threaded sleeve. A sliding limit fit relationship is formed between the outer wall of one end of the rotating bracket and the limit groove. The other end of the rotating bracket extends to the outer side of the control sleeve and is fixedly connected to the puncture member.

[0013] As a further technical solution of the present invention, the limiting groove is composed of a radial groove and an axial groove. The radial groove is opened on the outer wall of the bottom of the control sleeve, and the axial groove is opened along the axial direction of the control sleeve and is arranged towards the foam carrier plate. The lower end of the axial groove is connected to the radial groove. The radial groove and the axial groove are combined to form a limiting groove structure for constraining the movement trajectory of the rotating support.

[0014] As a further technical solution of the present invention, the drive control assembly includes a drive control motor and a transmission component. The drive control motor is fixed on the inner wall of the middle part of the side bracket, and the output end of the drive control motor is connected to two screws on the same side bracket through the transmission component.

[0015] As a further technical solution of the present invention, the puncture member is an integrated puncture structure composed of a bottom disc and a top truncated cone.

[0016] As a further technical solution of the present invention, a puncture blade is fixedly provided on the outer wall of the top conical frustum of the puncture member along the axial direction, and the tip of the puncture blade is set vertically toward the bottom end face of the foam carrier plate.

[0017] As a further technical solution of the present invention, the lateral pressure relief mechanism includes a mounting base, an adjusting bolt, a locking nut, a pressure relief clamp, and a pressure relief wedge. The mounting base is distributed at the bottom of the gripping frame, and the adjusting bolt is vertically fixed at the bottom of the mounting base. The pressure relief clamp is assembled on the adjusting bolt by the locking nut. The pressure relief wedge is fixed at the bottom of the pressure relief clamp, and the vertical height of the pressure relief end at the bottom of the pressure relief wedge is lower than the bottom height of the gripping end of the gripping mechanism.

[0018] As a further technical solution of the present invention, the pressure relief wedge adopts a plate-shaped structure with a right-angled trapezoidal cross section. The inclined end face of the pressure relief wedge is set facing the inner wall of the receiving groove of the foam carrier plate, and the flat end face of the pressure relief wedge is set facing the outer wall of the battery cell.

[0019] As a further technical solution of the present invention, the pressure relief wedge is made of wear-resistant flexible engineering material, and the bottom of the pressure relief wedge is provided with an arc-shaped flow guide wedge tip. The wedge angle of the arc-shaped flow guide wedge tip is set to 12-25°, and the surface of the arc-shaped flow guide wedge tip is sprayed with a low-friction wear-resistant coating.

[0020] As a further technical solution of the present invention, the stacking mechanism includes a limiting post, a mounting shaft, a stacking plate and a torsion spring. The limiting post and the mounting shaft are parallel to each other and vertically equidistantly fixed on the front and rear end side walls of the stacking frame. The stacking plate is rotatably mounted on the mounting shaft. The axial end face of the stacking plate is elastically connected to the outer wall of the mounting shaft through the torsion spring. The radial side wall of one end of the stacking plate elastically abuts against the outer wall of the limiting post. The radial side wall of the other end of the stacking plate is provided with a stacking groove.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The coordinated operation of the stacking mechanism, lifting unit, and side feeding unit not only enables the vertical and stable stacking and storage of foam carrier boards and the layer-by-layer lifting and feeding, but also continuously forms a regular staggered bottom pressure relief space in front of and behind the stacking frame. This provides dedicated clearance space for the rotation and piercing operation of the bottom piercing parts, solving the problem of no working space and inability to relieve bottom pressure in traditional flat stacking structures, and providing core structural support for bidirectional composite pressure relief structures.

[0023] The lateral pressure relief mechanism can preferentially insert into the lateral sealing gap between the battery cell and the tank, quickly breaking the lateral sealing state of the tank and releasing the lateral negative pressure; at the same time, the pressure relief end presses down to limit the foam carrier plate, counteracting the pushing force generated by the subsequent bottom piercing and lifting, so that the carrier plate is always stably fixed at the destacking position, preventing the carrier plate from floating or shifting, and ensuring the stability of the bidirectional pressure relief operation; and the height of the pressure relief end is lower than the height of the gripping end, which structurally forces the operation sequence of pressure relief first and then gripping, completely avoiding the problem of adhesion damage caused by gripping before pressure relief is completed;

[0024] The bottom pressure relief mechanism relies on the bottom pressure relief space formed by the overlapping layers. Through a combination of rotating alignment of the piercing parts and vertical piercing and lifting, it partially lifts the tank area from the bottom of the foam carrier board, opens up the gap between the battery cell and the bottom of the tank, and specifically breaks the bottom sealing negative pressure. This compensates for the shortcoming of lateral pressure relief, which cannot relieve the bottom surface sealing negative pressure. The bidirectional pressure relief works together to achieve complete release of negative pressure throughout the tank, eliminating defects such as battery cell collapse, adhesion and lifting, electrode misalignment, and damage to the aluminum-plastic film.

[0025] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the multi-layer battery cell destacking device for preventing foam carrier board adhesion provided in an embodiment of the present invention.

[0027] Figure 2 This is a top view of the structure of the multilayer battery cell destacking device for preventing foam carrier board adhesion provided in an embodiment of the present invention.

[0028] Figure 3 This is a side view of the internal structure of the multilayer battery cell destacking device provided in an embodiment of the present invention.

[0029] Figure 4 for Figure 1 A schematic diagram of the middle-layer stacking frame and the stacking mechanism.

[0030] Figure 5 for Figure 4A schematic diagram of a partial cross-section of the intermediate stacking frame and the stacking mechanism.

[0031] Figure 6 for Figure 5 Enlarged view of the structure at point A in the middle.

[0032] Figure 7 for Figure 2 Top view of the structure of the two bottom pressure relief mechanisms under different working conditions.

[0033] Figure 8 for Figure 7 A schematic diagram of the structure of the bottom pressure relief mechanism in its deployed state.

[0034] Figure 9 for Figure 7 A schematic diagram of the structure of the bottom pressure relief mechanism in its stowed state.

[0035] Figure 10 for Figure 9 Exploded view of a local structure of the central control component.

[0036] Figure 11 for Figure 1 A bottom view of the structure of the gripping frame and gripping mechanism.

[0037] Figure 12 for Figure 11 Enlarged view of the middle lateral pressure relief mechanism.

[0038] Reference numerals: 100-device base, 200-stacking frame, 210-bottom pressure relief space, 300-stacking mechanism, 310-limiting post, 320-mounting shaft, 330-stacking plate, 340-torsion spring, 350-stacking groove, 400-bottom pressure relief mechanism, 410-side bracket, 420-control assembly, 421-fixed bracket, 422-screw, 423-control sleeve, 424-screw sleeve, 425-rotating bracket, 426- Radial groove, 427-Axial groove, 430-Drive control assembly, 431-Drive control motor, 432-Transmission component, 440-Piercing component, 441-Piercing blade, 500-Gripping frame, 600-Gripping mechanism, 700-Side pressure relief mechanism, 710-Mounting base, 720-Adjusting bolt, 730-Locking nut, 740-Pressure relief clamp, 750-Pressure relief wedge, 800-Lifting unit, 900-Foam carrier plate, 910-Battery cell. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0040] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0041] like Figures 1 to 12 As shown, a multi-layer battery cell destacking device for preventing foam carrier board adhesion is provided as an embodiment of the present invention. It includes a device base 100, a lateral feeding unit, and a top moving unit. A stacking frame 200 is symmetrically fixed on the device base 100. A stacking mechanism 300 is vertically mounted on the inner side of each of the two stacking frames 200. The stacking mechanism 300 can vertically stack and arrange foam carrier boards 900 carrying battery cells 910 between the two stacking frames 200. A receiving groove for placing and positioning the battery cells 910 is provided in the middle of each foam carrier board 900. In the vertically stacked state, adjacent foam carrier boards 900 are arranged in a staggered front-to-back configuration, so that the stacked foam carrier boards 900 have an overall front-to-back shape. A staggered bottom pressure relief space 210 is provided; a lifting unit 800 for vertically lifting the foam carrier board 900 is fixed on the device base 100. The lifting unit 800 is arranged between two stacking frames 200 and works in conjunction with the lateral feeding unit to realize the automated intermittent feeding and conveying of the foam carrier board 900; a top moving unit is mounted above the stacking frame 200, and a gripping frame 500 is fixedly connected to the output end of the top moving unit. The top moving unit can drive the gripping frame 500 to complete horizontal and vertical lifting movements; the bottom of the gripping frame 500 is equipped with a gripping mechanism 600 for gripping the battery cell 910, and also includes:

[0042] The pressure relief unit comprises two bottom pressure relief mechanisms 400 and several lateral pressure relief mechanisms 700. The two bottom pressure relief mechanisms 400 are symmetrically fixed to the front and rear outer walls of the stacking rack 200. The bottom pressure relief mechanisms 400 are stacked opposite the foam carrier plates 900 to form a bottom pressure relief space 210 and a destacking station at the top of the stacking rack 200. Each of the two bottom pressure relief mechanisms 400 comprises a side support 410, a control component 420, a drive control component 430, and a piercing component 440. The side support 410 is symmetrically fixed to the front and rear outer walls of the stacking rack 200 and is directly opposite the destacking station at the top of the stacking rack 200. Each side bracket 410 has two control components 420 and one drive control component 430 on its inner side. The two control components 420 are symmetrically mounted on the inner wall of a single side bracket 410. A puncture element 440 is fixed on the output end of each of the two control components 420. The puncture element 440 is arranged perpendicular to the bottom end face of the foam carrier plate 900. The power input ends of the two control components 420 on the same side bracket 410 are connected to a drive control component 430 to form a transmission cooperation. The drive control component 430 is fixedly installed in the middle of the inner wall of the side bracket 410 and provides power input to the two control components 420 synchronously.

[0043] Several lateral pressure relief mechanisms 700 are evenly distributed and assembled on the bottom of the gripping frame 500 according to the outer dimensions of the battery cell 910. The pressure relief end of the lateral pressure relief mechanism 700 is precisely matched with the lateral fitting gap between the side wall of the battery cell 910 and the wall of the receiving groove of the foam carrier plate 900. Moreover, the vertical lowest point of the pressure relief end of the lateral pressure relief mechanism 700 is lower than the vertical lowest point of the gripping end of the gripping mechanism 600, ensuring that the pressure relief action takes precedence over the gripping action.

[0044] Specifically, the lateral feeding unit intermittently conveys a single set of foam carrier boards 900 loaded with battery cells 910 to the bearing position of the lifting unit 800. The lifting unit 800 and the stacking mechanism 300 cooperate to gradually push and stack multiple sets of foam carrier boards 900 loaded with battery cells 910 vertically, so that each set of foam carrier boards 900 rises in sequence and is arranged between two stacking racks 200, and finally the single set of foam carrier boards 900 is accurately stopped at the destabilization position at the top of the stacking rack 200. At the same time, relying on the staggered arrangement of adjacent foam carrier boards 900, a staggered bottom pressure relief space 210 is stably formed at the front and back of the stacking rack 200, providing working avoidance space for the bottom pressure relief mechanism 400.

[0045] Before destacking the battery cell 910 and foam carrier 900, the top moving unit drives the gripping frame 500 to move horizontally, so that several lateral pressure relief mechanisms 700 at the bottom of the gripping frame 500 are precisely aligned above the battery cell 910 at the destacking station. Then, the top moving unit drives the gripping frame 500 to move vertically downward, so that the pressure relief ends of all the lateral pressure relief mechanisms 700 are simultaneously inserted into the lateral bonding gaps between the battery cell 910 and the receiving groove of the foam carrier 900. This quickly connects the originally sealed groove space formed by the full bonding between the battery cell 910 and the receiving groove with the outside atmosphere, completely releasing the negative pressure adsorption force generated by the lateral bonding area. At the same time, the lateral pressure relief mechanisms 700 that have moved down to their positions form a vertical pressing limit on the top end face of the foam carrier 900, so that the foam carrier 900 to be destacking is stably fixed on the destacking station, which facilitates the effective execution of subsequent bottom pressure relief and gripping processes.

[0046] After the lateral depressurization operation is completed, a bottom depressurization mechanism 400 in the bottom depressurization space 210 of the corresponding destacking station is activated. The drive and control component 430 in this mechanism drives two control components 420 to work. The two control components 420 first drive their respective piercing parts 440 to rotate at a certain angle, so that the piercing parts 440 rotate into the bottom depressurization space 210 of the destacking station, completing the avoidance and alignment of the piercing operation position. After rotating into position, the control components 420 continue to drive the piercing parts 440 to move vertically upward as a whole, so that the top of the piercing parts 440 pierces the bottom end face of the foam carrier plate 900 in the destacking station, and the foam is lifted by piercing. The bottom of the foam carrier plate 900 is supported to open and separate the bottom of the battery cell 910 from the bottom of the groove of the foam carrier plate 900, so that the sealed bonding area at the bottom of the battery cell 910 is connected to the outside atmosphere, releasing the negative pressure adsorption force generated by the bottom bonding, eliminating faults such as battery cell 910 collapsing, foam carrier plate 900 sticking and pulling, and battery cell 910 misalignment and damage; after the lateral and bottom bidirectional negative pressure between the battery cell 910 and the foam carrier plate 900 is completely released, the gripping mechanism 600 starts to work, clamping and positioning the four outer walls of the battery cell 910 through its own contraction action, thereby completing the gripping and destacking operation of the battery cell 910 without adhesion and damage.

[0047] It should be noted that an empty board recycling and stacking unit can also be provided on one side of the device base 100. This empty board recycling and stacking unit is located on the discharge side of the stacking rack 200, and is arranged on opposite sides of the stacking rack 200, respectively, along with the side feeding unit. It mainly includes a recycling conveyor belt, a tilting arm, a stacking rack, a flush pusher plate, and an online cleaning assembly. The infeed end of the recycling conveyor belt is aligned with the destabilization station at the top of the stacking rack 200, and the discharge end extends above the stacking rack. The tilting arm is rotatably installed on the side of the infeed end of the recycling conveyor belt, and its tilting stroke covers the edge area of ​​the foam carrier board 900 at the destabilization station. The online cleaning component is mounted above the middle section of the recycling conveyor belt. After the battery cell 910 in the top foam carrier plate 900 is completely removed by the gripping mechanism 600, the top moving unit drives the gripping frame 500 and the lateral pressure relief mechanism 700 to move away and avoid each other. The flipping arm is activated, pushing the edge of the empty foam carrier plate 900 from the side, so that the empty carrier plate slides out of the destacking station along the stacking groove 350 of the stacking plate 330 and falls smoothly onto the recycling conveyor belt. The recycling conveyor belt adopts an intermittent operation mode, synchronized with the destacking rhythm, and gradually transports the empty foam carrier plate 900 towards the stacking rack to realize the stacking and recycling of the empty foam carrier plate 900.

[0048] like Figures 1 to 10As shown, in a preferred embodiment of the present invention, the control component 420 includes a fixed frame 421, a screw 422, a control sleeve 423, a threaded sleeve 424, and a rotating bracket 425. The fixed frame 421 is fixed on the inner wall of the side bracket 410. The screw 422 is vertically rotatably mounted on the fixed frame 421 and is connected to the drive control component 430. The control sleeve 423 is coaxially disposed on the outer side of the screw 422 and fixed on the fixed frame 421. A limit groove is formed on the side wall of the control sleeve 423. The threaded sleeve 424 is threaded onto the outer wall of the screw 422. The rotating bracket 425 is horizontally fixed on the outer wall of the threaded sleeve 424. A sliding limit fit relationship is formed between the outer wall of one end of the rotating bracket 425 and the limit groove. The other end of the rotating bracket 425 extends to the outer side of the control sleeve 423 and is fixedly connected to the piercing member 440.

[0049] It should be noted that the limiting groove is composed of a radial groove 426 and an axial groove 427. The radial groove 426 is formed on the outer wall of the bottom of the control sleeve 423, and the axial groove 427 is formed along the axial direction of the control sleeve 423 and is arranged towards the foam carrier plate 900. The lower end of the axial groove 427 is connected to the radial groove 426. The radial groove 426 and the axial groove 427 are combined to form a limiting groove structure for constraining the movement trajectory of the rotating bracket 425. The groove boundaries of the radial groove 426 and the axial groove 427 can hard limit the rotating bracket 425, so that the rotation angle of the piercing member 440 and the axial stroke of the piercing lifting are physically constrained, avoiding the piercing member 440 from rotating out of position or lifting out of stroke, and preventing excessive piercing from damaging the foam carrier plate 900 and the battery cell 910 body.

[0050] Specifically, the power output from the drive control component 430 drives the screw 422 to rotate in the forward or reverse direction, and the screw sleeve 424 is driven by the threaded pair to generate a tendency to move. Since the rotating bracket 425 is engaged inside the limiting groove, the rotating bracket 425 follows the screw sleeve 424 to perform a compound motion along the groove-limited trajectory. When the screw 422 rotates in the forward direction, the screw sleeve 424 first drives the rotating bracket 425 to perform a radial oscillating rotational motion along the radial slide groove 426, causing the rotating bracket 425 and the piercing member 440 to rotate back to the bottom pressure relief hole. Within the working position of 210; after the rotating bracket 425 slides to the position where the radial slide groove 426 and the axial slide groove 427 are connected, the screw 422 continues to rotate, and the rotating bracket 425 rotates into the interior of the axial slide groove 427. At this time, the circumferential rotation of the rotating bracket 425 is constrained and locked by the groove wall of the axial slide groove 427, and the screw sleeve 424 is converted into driving the rotating bracket 425 and the piercing part 440 to make a vertical upward linear feed motion along the axial slide groove 427, completing the action of the piercing part 440 piercing into the bottom of the foam carrier plate 900 and lifting it. When the screw 422 rotates in the reverse direction, the rotating bracket 425 first resets vertically downward along the axial slide groove 427, and then rotates back out of the bottom pressure relief space 210 along the radial slide groove 426, completing the avoidance and return of the piercing part 440; the entire sequence of actions of the piercing part 440—rotational alignment, axial piercing and lifting, axial retraction, and rotational avoidance—can be realized through the control component 420. No multiple independent drive sources are required; two different forms of motion output can be completed solely by the forward and reverse rotation of the single screw 422 and the design of the limit groove. The requirement for rotating into the bottom pressure relief space 210 and then piercing and lifting upwards simplifies the overall structure of the bottom pressure relief mechanism 400 and reduces the equipment failure rate. It also eliminates the need for sensors and controllers to switch the action process, thus eliminating problems such as piercing alignment failure or collision with the foam carrier plate 900 caused by electrical control signal delays and timing errors, making it suitable for continuous high-speed operation of destacking equipment. The spiral direction of the screw 422 can be adjusted according to the actual design to ensure that the movement trajectories of the two rotating supports 425 on the same side support 410 are consistent.

[0051] like Figures 1 to 10 As shown, in a preferred embodiment of the present invention, the drive control assembly 430 includes a drive control motor 431 and a transmission component 432. The drive control motor 431 is fixed on the inner wall of the middle part of the side bracket 410. The output end of the drive control motor 431 is connected to two screws 422 on the same side bracket 410 through the transmission component 432. The transmission component 432 preferably adopts a belt drive structure composed of a synchronous belt and a synchronous pulley.

[0052] Specifically, on a single side bracket 410, the bottom ends of the two screws 422 of the two control components 420 are fixedly equipped with synchronous pulleys, and the output shaft of the drive motor 431 is fixedly equipped with a driving synchronous pulley. The synchronous belt is looped around the driving synchronous pulley and the synchronous pulleys at the bottom of the two screws 422, forming a synchronous belt drive structure. When the drive motor 431 starts running in the forward direction, through the synchronous transmission action of the synchronous belt and the synchronous pulleys, it synchronously drives the two screws 422 on the same side to rotate at the same speed, so that the two control components 420 rotate at the same speed. The first step provides threaded transmission power; when the drive motor 431 rotates in reverse, it can synchronously drive the two screws 422 to rotate in reverse, realizing the synchronous reset action of the two sets of piercing mechanisms; relying on the zero-slip constant speed transmission characteristics of the synchronous belt pulley, it ensures that the speed, direction and angle of the two screws 422 are completely synchronized, so that the rotation angle and piercing lifting stroke of the two piercing parts 440 are completely consistent, achieving symmetrical and uniform support and pressure relief at the bottom of the foam carrier plate 900, avoiding the problem of carrier plate tilting and local negative pressure residue caused by uneven pressure relief on one side.

[0053] like Figures 6 to 10 As shown, in a preferred embodiment of the present invention, the puncture member 440 is an integral puncture structure composed of a bottom disc and a top truncated cone; a puncture blade 441 is fixedly provided on the outer wall of the top truncated cone along the axial direction, and the tip of the puncture blade 441 is vertically facing the bottom end face of the foam carrier plate 900.

[0054] Specifically, when the control component 420 drives the piercing member 440 to feed upward axially, the top conical truncated cone of the piercing member 440 first contacts the bottom end face of the foam carrier plate 900, and the axial blade tip first contacts and lightly penetrates the bottom material of the foam carrier plate 900; as the piercing member 440 continues to move upward, the axially arranged piercing blades 441 vertically cut and open the bottom contact area of ​​the foam carrier plate 900, so that the gap between the bottom of the foam carrier plate 900 and the bottom surface of the battery cell 910 is forcibly opened; at the same time, the bottom conical cone... The disc physically limits the upward travel of the piercing component 440, preventing it from excessively penetrating the foam carrier plate 900. While ensuring the effective opening of the pressure relief gap, it eliminates the problem of the piercing structure puncturing the carrier plate or damaging the internal battery cell 910. It quickly breaks the vacuum negative pressure formed by the bottom surface of the battery cell 910, making up for the defect that lateral pressure relief cannot relieve the negative pressure on the bottom surface, achieving complete release of negative pressure throughout the entire area, eliminating the superimposed negative pressure caused by stacking and compaction, and significantly improving the yield of battery cell 910 after unpacking.

[0055] It should be noted that the truncated cone structure of the piercing component 440 has a gradually tapered characteristic with a smaller top and a larger bottom, which can achieve progressive hole expansion and opening; together with the axially arranged piercing blade 441, it can accurately make linear cuts and expand the seam in the bottom bonding area of ​​the foam carrier plate 900, which can quickly open the ventilation channel between the bottom of the battery cell 910 and the outside world, and avoid large-area compression or tearing of the foam carrier plate 900, ensuring that the pressure relief gap is regular and uniform, without large-area damage.

[0056] like Figures 2 to 12 As shown, in a preferred embodiment of the present invention, the lateral pressure relief mechanism 700 includes a mounting base 710, an adjusting bolt 720, a locking nut 730, a pressure relief clamp 740, and a pressure relief wedge 750. The mounting base 710 is distributed at the bottom of the gripping frame 500. The adjusting bolt 720 is vertically fixed at the bottom of the mounting base 710. The pressure relief clamp 740 is assembled onto the adjusting bolt 720 by the locking nut 730. The pressure relief wedge 750 is fixed at the bottom of the pressure relief clamp 740. The vertical height of the pressure relief end of the pressure relief wedge 750 is always lower than the bottom height of the gripping end of the gripping mechanism 600, ensuring that the pressure relief action takes precedence over the gripping action.

[0057] It should be noted that: the pressure relief wedge 750 preferably adopts a plate-shaped structure with a right-angled trapezoidal cross-section. The inclined end face of the pressure relief wedge 750 is set facing the inner wall of the receiving groove of the foam carrier plate 900, and the flat end face of the pressure relief wedge 750 is set facing the outer wall of the battery cell 910. While opening the lateral fitting gap and realizing lateral pressure relief, the pressure relief wedge 750 avoids rigid compression or impact on the outer wall of the battery cell 910, thus avoiding damage to the appearance and internal structure of the battery cell 910. The pressure relief wedge 750 is made of wear-resistant flexible engineering material, and the bottom of the pressure relief wedge 750 is provided with an arc-shaped flow guide wedge tip. The wedge angle of the arc-shaped flow guide wedge tip is preferably set to 12-25°, and the surface of the arc-shaped flow guide wedge tip is sprayed with a low-friction wear-resistant coating to reduce wedge insertion resistance and scratch risk.

[0058] Specifically, during the destabilization and pressure relief process, the top moving unit drives the gripping frame 500 to move downwards as a whole. Because the bottom height of the pressure relief wedge 750 is lower than the gripping end height of the gripping mechanism 600, the pressure relief wedge 750 will preferentially contact the lateral bonding gap between the battery cell 910 and the foam carrier plate 900 receiving groove. During the downward movement, its bottom arc-shaped guide wedge tip, with its small wedge angle and low-friction coating characteristics, can smoothly and without scraping into the lateral sealed bonding gap. As the gripping frame 500 continues to descend, the right-angled trapezoidal pressure relief wedge 750 gradually opens the bonding gap of the groove side wall using its own inclined surface, so that the sealed bonding area between the battery cell 910 and the groove wall quickly opens up. The enclosed cavity is completely connected to the outside atmosphere, thoroughly releasing the negative pressure adsorption force generated by lateral adhesion; at the same time, multiple sets of evenly distributed pressure relief wedges 750 press down synchronously, forming a uniform vertical clamping constraint force on the foam carrier plate 900, limiting the foam carrier plate 900 from floating, shifting or shaking during bottom puncture pressure relief and separation of the battery cell 910, ensuring the stability of the destabilization position; the installation height of the pressure relief clamp plate 740 and pressure relief wedge plate 750 can be vertically adjusted by adjusting bolts 720 and locking nuts 730 to adapt to battery cells 910 and foam carrier plates 900 of different thicknesses, ensuring that the pressure relief wedge plate 750 always prioritizes wedging in and the gripping mechanism 600 clamps it in the subsequent sequence logic.

[0059] like Figures 1 to 6 As shown, in a preferred embodiment of the present invention, the stacking mechanism 300 includes a limiting post 310, a mounting shaft 320, a stacking plate 330, and a torsion spring 340. The limiting post 310 and the mounting shaft 320 are parallel to each other and vertically equidistantly fixed on the front and rear end side walls of the stacking frame 200. A triangular stacking plate 330 is rotatably mounted on the mounting shaft 320. The axial end face of the stacking plate 330 is elastically connected to the outer wall of the mounting shaft 320 through the torsion spring 340. The radial side wall of one end of the stacking plate 330 elastically abuts against the outer wall of the limiting post 310. The radial side wall of the other end of the stacking plate 330 is provided with a stacking groove 350 for supporting and placing the foam carrier plate 900.

[0060] Specifically, when the lifting unit 800 lifts and transports the foam carrier plate 900 vertically upwards, the bottom edge of the foam carrier plate 900 presses against the wall of the stacking groove 350 of the laminated plate 330. The upward thrust forces the triangular laminated plate 330 to rotate and swing around the mounting shaft 320. At this time, the torsion spring 340 stores torsional force, and the laminated plate 330 disengages from the limiting post 310 and moves away, allowing the foam carrier plate 900 to smoothly pass from the lower layer to the upper layer. When a single foam carrier plate 900 completely passes the current laminated plate 330, the thrust disappears, the torsion spring 340 releases its elastic torque, and drives the laminated plate 330 to rotate back and reset, so that the end of the laminated plate 330 re-fits the limiting post 310 to complete the limiting. Locking; at this time, the stacked plate 330 maintains a horizontal and stable posture, and supports and limits the foam carrier plate 900 above through the stacking groove 350, so that a single foam carrier plate 900 can independently stop and bear load layer by layer; repeating this process, multiple sets of foam carrier plates 900 can be vertically stacked from bottom to top, and in conjunction with the lifting stroke, a stacked structure of adjacent foam carrier plates 900 staggered front and back is formed, providing necessary avoidance conditions for the bottom pressure relief mechanism 400 to puncture; it ensures that the lower foam carrier plate 900 can smoothly open the stacked plate 330 to complete the layer change when it is lifted upward, and it can also prevent the upper foam carrier plate 900 from sliding, falling and misaligning due to its own weight, accurately adapting to the loading conditions of stacking and stopping layer by layer under its own weight.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-layer battery cell destacking device for preventing foam carrier board adhesion, comprising a device base, a side feeding unit, and a top moving unit. The device base is symmetrically fixed with stacking frames, and stacking mechanisms are vertically mounted on the inner sides of both stacking frames. Each foam carrier board has a receiving groove in the middle for placing and positioning battery cells. In the vertically stacked state, adjacent foam carrier boards are arranged in a staggered front-to-back arrangement, forming a staggered bottom pressure relief space after stacking. A lifting unit is fixed on the device base, positioned between the two stacking frames and working in conjunction with the side feeding unit. The top moving unit is mounted above the stacking frames, and a gripping frame is fixedly connected to its output end. A gripping mechanism is mounted on the bottom of the gripping frame. The device is characterized in that… Also includes: The pressure relief unit consists of two bottom pressure relief mechanisms and several side pressure relief mechanisms. The two bottom pressure relief mechanisms are symmetrically fixed on the front and rear outer walls of the stacking rack. The bottom pressure relief mechanisms face the foam carrier plates stacked to form a bottom pressure relief space and a destacking station at the top of the stacking rack. Each of the two bottom pressure relief mechanisms consists of a side bracket, a control component, a drive control component, and a piercing component. The side brackets are symmetrically fixed on the front and rear outer walls of the stacking rack and face the destacking station at the top of the stacking rack. Each side bracket has two control components and one drive control component on its inner side. The two control components are symmetrically assembled on the inner wall of a single side bracket. A piercing component is fixed on the output end of each of the two control components. The piercing component is arranged perpendicular to the bottom end face of the foam carrier plate. The power input ends of the two control components on the same side bracket are connected to a drive control component to form a transmission cooperation. The drive control component is fixedly installed in the middle of the inner wall of the side bracket. Several lateral pressure relief mechanisms are evenly distributed and assembled on the bottom of the gripping frame according to the outer dimensions of the battery cell. The pressure relief end of the lateral pressure relief mechanism is matched with the lateral fitting gap between the side wall of the battery cell and the wall of the foam carrier plate receiving groove. Furthermore, the vertical lowest point of the pressure relief end of the lateral pressure relief mechanism is lower than the vertical lowest point of the gripping end of the gripping mechanism.

2. The multi-layer battery cell destacking device for preventing foam carrier board adhesion according to claim 1, characterized in that, The control assembly includes a fixed frame, a screw, a control sleeve, a threaded sleeve, and a rotating bracket. The fixed frame is fixed to the inner wall of the side bracket. The screw is vertically rotatably mounted on the fixed frame and is connected to the drive control assembly. The control sleeve is coaxially disposed on the outer side of the screw and fixed to the fixed frame. A limit groove is formed on the side wall of the control sleeve. The threaded sleeve is threaded onto the outer wall of the screw. A rotating bracket is horizontally fixed to the outer wall of the threaded sleeve. A sliding limit fit is formed between the outer wall of one end of the rotating bracket and the limit groove. The other end of the rotating bracket extends to the outer side of the control sleeve and is fixedly connected to the puncture device.

3. The multi-layer battery cell destacking device for preventing foam carrier board adhesion according to claim 2, characterized in that, The limiting groove is composed of a radial groove and an axial groove. The radial groove is opened on the outer wall of the bottom of the control sleeve, and the axial groove is opened along the axial direction of the control sleeve and is arranged towards the foam carrier plate. The lower end of the axial groove is connected to the radial groove. The radial groove and the axial groove are combined to form a limiting groove structure for constraining the movement trajectory of the rotating support.

4. The multi-layer battery cell destacking device for preventing foam carrier board adhesion according to claim 2, characterized in that, The drive control assembly includes a drive control motor and a transmission component. The drive control motor is fixed on the inner wall of the middle part of the side bracket, and the output end of the drive control motor is connected to two screws on the same side bracket through the transmission component.

5. The multi-layer battery cell destacking device for preventing foam carrier board adhesion according to claim 2, characterized in that, The puncture device is an integrated puncture structure consisting of a bottom disc and a top truncated cone.

6. The multi-layer battery cell destacking device for preventing foam carrier board adhesion according to claim 5, characterized in that, The outer wall of the top conical truncated cone of the puncture device is fixedly provided with a puncture blade along the axial direction, and the tip of the puncture blade is set vertically toward the bottom end face of the foam carrier plate.

7. The multi-layer battery cell destacking device for preventing foam carrier board adhesion according to claim 1, characterized in that, The lateral pressure relief mechanism includes a mounting base, an adjusting bolt, a locking nut, a pressure relief clamp, and a pressure relief wedge. The mounting base is located at the bottom of the gripping frame. The adjusting bolt is vertically fixed at the bottom of the mounting base. The pressure relief clamp is assembled onto the adjusting bolt by the locking nut. The pressure relief wedge is fixed at the bottom of the pressure relief clamp. The vertical height of the pressure relief end of the pressure relief wedge is lower than the bottom height of the gripping end of the gripping mechanism.

8. The multi-layer battery cell destacking device for preventing foam carrier board adhesion according to claim 7, characterized in that, The pressure relief wedge adopts a plate-shaped structure with a right-angled trapezoidal cross-section. The inclined end face of the pressure relief wedge is set facing the inner wall of the receiving groove of the foam carrier plate, and the flat end face of the pressure relief wedge is set facing the outer wall of the battery cell.

9. The multi-layer battery cell destacking device for preventing foam carrier board adhesion according to claim 8, characterized in that, The pressure relief wedge is made of wear-resistant flexible engineering material, and the bottom of the pressure relief wedge is provided with an arc-shaped flow guide wedge tip. The wedge angle of the arc-shaped flow guide wedge tip is set to 12-25°, and the surface of the arc-shaped flow guide wedge tip is sprayed with a low-friction wear-resistant coating.

10. The multi-layer battery cell destacking device for preventing foam carrier board adhesion according to claim 1, characterized in that, The stacking mechanism includes a limiting post, a mounting shaft, a stacking plate, and a torsion spring. The limiting post and the mounting shaft are parallel to each other and vertically equidistantly fixed on the front and rear side walls of the stacking frame. The stacking plate is rotatably mounted on the mounting shaft. The axial end face of the stacking plate is elastically connected to the outer wall of the mounting shaft through the torsion spring. The radial side wall of one end of the stacking plate elastically abuts against the outer wall of the limiting post. The radial side wall of the other end of the stacking plate is provided with a stacking groove.

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