An integrated automatic stacking and hot-pressing shaping equipment for sodium-ion battery cells.

Abstract

An integrated automatic stacking and hot-pressing shaping device for sodium-ion battery cells includes an electrode conveying mechanism, a stacking mechanism, a transfer mechanism, and a hot-pressing shaping mechanism mounted on a frame. The electrode conveying mechanism transports die-cut electrodes to the stacking station. The stacking mechanism, located at one end of the electrode conveying mechanism, stacks the electrodes transported from the conveying mechanism. The transfer mechanism, which can operate horizontally between the discharge end of the electrode conveying mechanism and the stacking mechanism, transfers the aligned electrodes from the electrode conveying mechanism to the stacking mechanism. The transfer mechanism is located above the electrode conveying mechanism and the stacking mechanism. The hot-pressing shaping mechanism, located below the electrode conveying mechanism, shapes and hot-presses the stacked cell modules. The device uses suction cups for electrode transfer, relying more on adsorption for fixation compared to flexible clamps. This surface adsorption reduces the risk of cracks on the electrode sides due to external pressure.

Description

Technical Field

[0001] This invention belongs to the field of battery production equipment technology, specifically relating to an integrated automatic stacking and hot pressing shaping equipment for sodium-ion battery cells. Background Technology

[0002] Sodium batteries, also known as sodium-ion batteries, are a type of reversible, rechargeable, "rocking chair" rechargeable battery system. Their working principle relies on the insertion and extraction of sodium ions (Na⁺) between the positive and negative electrodes to store and release electrical energy. The core structure of sodium batteries is highly similar to that of lithium-ion batteries, except that sodium is used instead of lithium.

[0003] During the production of battery electrodes, the electrode strip needs to be punched. The existing punching method is to cut the strip into the shape required by the electrode by a die-cutting machine. After die-cutting, the electrode and the edge material are output together. After the edge material is removed, the electrode remains on the traction belt. The workers collect the electrode. During the removal of the edge material, the electrode is easily moved, causing the electrode to be placed messily on the conveyor belt, which is not conducive to the collection of the electrode.

[0004] Defects and shortcomings of existing technology:

[0005] Currently, sodium-ion battery cell stacking still generally follows the approach of "gripping with a robotic arm on both sides and then placing it flat on a U-shaped end plate". However, traditional rigid finger sleeves have obvious shortcomings: the friction coefficient of metal serrations or hard anode tooth surfaces is high, and micro-scratches are easily scratched during clamping. The stress concentration at the tooth tip can even become a source of hidden cracks. Purely rigid structures have no buffer for thickness jumps of ±30 μm, and the local compressive stress rises sharply. If a fully flexible clamp is used instead, the clamping force is insufficient and the cells are prone to slipping during transportation, creating a dilemma of "hardness damages the cells, softness causes them to fall off". Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide an integrated automatic stacking and hot pressing shaping device for sodium-ion battery cells.

[0007] An integrated automatic stacking and hot pressing shaping device for sodium-ion battery cells includes an electrode conveying mechanism, a stacking mechanism, a transfer mechanism, and a hot pressing shaping mechanism mounted on a frame.

[0008] The electrode conveying mechanism is used to convey the die-cut electrode sheets to the stacking station;

[0009] The stacking mechanism is located at one end of the electrode conveying mechanism and is used to stack the electrodes conveyed by the electrode conveying mechanism.

[0010] The transfer mechanism can operate horizontally between the discharge end of the electrode conveying mechanism and the stacking mechanism, and is used to transfer the electrodes on the electrode conveying mechanism to the stacking mechanism after correction; the transfer mechanism is located above the electrode conveying mechanism and the stacking mechanism.

[0011] The hot pressing and shaping mechanism is used to shape and hot press the stacked battery cell modules, and the hot pressing and shaping mechanism is located below the electrode conveying mechanism.

[0012] The electrode conveying mechanism includes an electrode transport platform and a conveyor belt. The electrode transport platform is horizontally located in the middle of the frame, and the conveyor belt is located inside the electrode transport platform.

[0013] The transfer mechanism includes a suction cup, an infrared detector, a motor, and a translation and lifting drive device;

[0014] The suction cup is mounted on the end of the motor's output shaft. The inner cavity of the suction cup is connected to the air pump via a hose. The air pump is fixed to the motor's housing.

[0015] The translation and lifting drive device is used to drive the suction cup and motor to move forward, backward, left, right and up, and the motor is installed at the output end of the translation and lifting drive device;

[0016] The infrared detector is used to detect the position and orientation of the electrode on the electrode conveying mechanism. The infrared detector is mounted on the translation and lifting drive device.

[0017] The motor is used to drive the suction cup to rotate in order to correct the angle of the electrode.

[0018] The translation and lifting drive device includes a moving track, a hydraulic cylinder, and a telescopic rod;

[0019] The movable track bar can move horizontally between the discharge end of the electrode conveying mechanism and the stacking mechanism;

[0020] There are two hydraulic cylinders, which are arranged side by side along the longitudinal direction of the machine under the moving track. The top of the telescopic rod of the two hydraulic cylinders is fixed with a fixing block.

[0021] There are two telescopic rods, which are symmetrically arranged on the opposite surfaces of two fixed blocks, and the motor is fixed between the two telescopic rods;

[0022] There are two infrared detectors, which are located at the lower ends of two fixed blocks.

[0023] The stacking mechanism includes a liftable top plate, a U-shaped end plate, and a bending drive device;

[0024] The top plate is mounted on the top of the hydraulic cylinder. The top surface of the electrode conveying platform of the electrode conveying mechanism and the bottom surface of the hot pressing chamber of the hot pressing shaping mechanism are both provided with slots to accommodate the top plate. When the hydraulic cylinder extends to its position, the top plate is flush with the top surface of the electrode conveying platform. When the hydraulic cylinder retracts to its position, the top plate is flush with the bottom surface of the hot pressing chamber.

[0025] The U-shaped end plate is located at the slot of the electrode transport table of the electrode conveying mechanism, and the upper end of the U-shaped end plate is an aluminum alloy soft strip.

[0026] There are two sets of bending drive devices, which are located on both sides of the electrode transport platform at the slot. The bending drive devices are used to push the upper part of the U-shaped end plate to bend and deform to cover the stacked cell module.

[0027] The bending drive device includes a pusher assembly, and the electrode transport table has notches on both sides to accommodate the pusher assembly.

[0028] The push plate assembly includes a positioning extrusion plate and an L-shaped extrusion plate;

[0029] The positioning extrusion plate includes an extrusion positioning plate one and an extrusion positioning plate two. The extrusion positioning plate two is mounted on the top of the extrusion positioning plate one via a bendable and deformable silicone spring block. The extrusion positioning plate one is mounted on the output end of the hydraulic cylinder three and is flush with the vertical surface of the U-shaped end plate one.

[0030] The L-shaped extrusion plate is installed at the output end of the hydraulic cylinder four. When the hydraulic cylinder four extends, the horizontal plate of the L-shaped extrusion plate will press and bend the positioning plate two, and drive the aluminum alloy soft strip at the top of the U-shaped end plate to deform and bend.

[0031] Hydraulic cylinders three and four on the same side are mounted side by side on a support frame.

[0032] The hot pressing shaping mechanism includes a hot pressing chamber located in the frame below the electrode conveying mechanism;

[0033] A hot press is installed on the upper inner wall of the hot press chamber;

[0034] The hot-pressing chamber is a cuboid with openings at both ends. One opening of the hot-pressing chamber is equipped with a closed door, and the other opening has a closed push plate that can move horizontally with the drive mechanism. The hot-pressing chamber is connected to the vacuum pump via a pipeline.

[0035] The drive mechanism includes a push plate and two hydraulic cylinders. The two hydraulic cylinders are arranged side by side and their output ends are fixed on a horizontal plate. The two ends of the push plate are fixed to the horizontal plate and the closing push plate, respectively.

[0036] 1. The conveyor belt transports sodium ion electrodes individually. The moving track moves horizontally under the drive of the linear module. Simultaneously, an infrared detector on the outer surface of the fixed block performs infrared detection on the moving sodium ion electrodes on the top surface of the conveyor belt, detecting their position and angle. A hydraulic cylinder moves the fixed block downwards, causing the suction cup at the motor output end to adhere to the outer surface of the sodium ion electrode. If the sodium ion electrode is tilted, the motor is controlled to rotate the electrode, adjusting its angle. This achieves the effect of using an infrared detector to detect the position and angle of the sodium ion electrodes and subsequently adjusting their position, facilitating effective stacking and placement. When the infrared detector detects sodium ion electrodes, if the position is too biased to one side, the system will then... Two sets of telescopic rods on the outer surface of the fixed block move the position of the motor back and forth, thereby adjusting the position of the motor and allowing the suction cup at the motor output end to move effectively to the vertical position above the sodium ion electrode. As the hydraulic cylinder continuously presses down on the motor, the gas inside the suction cup is compressed out, and the sodium ion electrode is firmly adsorbed onto the bottom surface of the suction cup. After the sodium ion electrode is stacked on the U-shaped end plate of the stacking mechanism, the air pump injects gas into the inside of the suction cup, refilling the semi-vacuum environment inside the suction cup. This refills the suction cup, allowing the sodium ion electrode to detach from the surface of the suction cup. This achieves the effect of using the telescopic rods to move the position of the motor left and right, adjusting the position of the sodium ion electrode at different locations, and allowing the sodium ion electrode to quickly detach from the surface of the suction cup.

[0037] 2. Hydraulic cylinder three pushes the extrusion positioning plate one, which limits the position of the extrusion positioning plate one on the U-shaped end plate. At this time, the sodium ion electrode sheets will be stacked in layers on the surface of the U-shaped end plate under the movement of the moving track. After multiple sodium ion electrode sheets are completely stacked inside the U-shaped end plate, a sodium ion battery cell module is obtained. Hydraulic cylinder four pushes the L-shaped extrusion plate, which pushes the back of the extrusion positioning plate two. The bent extrusion positioning plate two will extrude the aluminum alloy soft strip on the top surface of the U-shaped end plate. At this time, the soft material properties of the aluminum alloy soft strip are utilized to extrude and limit multiple sodium ion electrode sheets. The horizontal angle extrusion and bonding can effectively reduce the scratches and extrusion dents on the top surface of the sodium ion electrode sheets caused by excessive bending of the aluminum alloy soft strip.

[0038] 3. After the sodium-ion battery module is positioned, hydraulic cylinder 1 lowers the sodium-ion battery module and moves it to the entrance of the hot pressing chamber. Then, hydraulic cylinder 2 pushes the push plate and moves the sodium-ion battery module and U-shaped end plate into the hot press. At this time, the hot press performs hot pressing on the sodium-ion battery module. After completion, the closing door is opened and the U-shaped end plate and battery module are moved out.

[0039] This invention utilizes an infrared detector to detect the position and angle of sodium ion electrodes, and then adjusts the position of the sodium ion electrodes during subsequent movement, thereby improving the effectiveness of stacking and placing sodium ion electrodes.

[0040] This invention uses a suction cup to transfer the electrode sheet. Compared with flexible clamps, which rely more on adsorption for fixation, this method uses surface adsorption, which reduces the risk of cracks on the electrode sheet caused by external pressure. The vacuum suction cup applies a gentle and dispersed force to the electrode sheet through uniformly distributed negative pressure adsorption, which almost does not produce local stress concentration and can effectively protect the integrity of the electrode sheet surface and edges. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of the present invention;

[0042] Figure 2 This is a schematic cross-sectional view of the support frame structure of the present invention;

[0043] Figure 3 This is a schematic diagram of the unfolding structure of the stacking mechanism of the present invention;

[0044] Figure 4 This is a schematic diagram of the stacking mechanism of the present invention;

[0045] Figure 5 This is a partial cross-sectional view of the present invention. Figure 1 ;

[0046] Figure 6 This is a partial cross-sectional view of the present invention. Figure 2 ;

[0047] Figure 7 This is a schematic diagram of the hot pressing and shaping mechanism of the present invention. Detailed Implementation

[0048] like Figure 1 , Figure 5 , Figure 6As shown, the frame 11 of the present invention is provided with an electrode conveying mechanism in the middle. One end of the electrode conveying mechanism extends out of the frame and connects with the die-cut electrode conveyor belt. The other end of the frame of the electrode conveying mechanism is provided with a stacking mechanism for stacking the electrode 14 conveyed by the electrode conveying mechanism. A transfer mechanism is provided above the electrode conveying mechanism and the stacking mechanism. The transfer mechanism can operate horizontally between the discharge end of the electrode conveying mechanism and the stacking mechanism. It is used to transfer the electrode 14 on the electrode conveying mechanism to the stacking mechanism after correction. A hot pressing and shaping mechanism is provided below the electrode conveying mechanism and the stacking mechanism. The hot pressing and shaping mechanism is used to shape and hot press the stacked battery cell module.

[0049] like Figure 1 , Figure 2 , Figure 6 As shown, the electrode conveying mechanism includes an electrode transport platform 12, which is a U-shaped platform with an open top. A conveyor belt 121 is provided on one inner end of the electrode transport platform 12, and the conveyor belt 121 is used to transport sodium ion electrodes 14. The support frame 13 of the transfer mechanism is fixed on the frame 11. A linear module is fixed at the lower end of the support frame 13. The linear module moving platform is connected to the moving track 131. The moving track 131 can move horizontally with the linear module. Hydraulic cylinders 132 are fixedly installed on the bottom surface of the moving track 131 at both ends. Fixed blocks 133 are fixedly connected to the hydraulic cylinders 132. Infrared detectors 134 are provided on the bottom surface of the fixed blocks 133. Two sets of telescopic rods 135 are symmetrically fixedly installed on the opposite sides of the two fixed blocks 133. Motors 136 are fixedly installed at the output ends of the two sets of telescopic rods 135. Suction cups 137 are fixedly connected to the output ends of the motors 136. Air pumps 138 are fixedly installed on the outer surface of the motors 136. Telescopic air guide hoses 139 are fixedly connected to the output ends of the air pumps 138. The other end of the telescopic air guide hoses 139 is fixed to the suction cup, and its end is connected to the top inner wall of the suction cup 137.

[0050] Using the surface of the conveyor belt 121 as a known reference plane, an infrared detector is used to detect the difference in reflectivity (or occlusion difference) between the edge of the electrode and the surface of the conveyor belt 121, thereby determining the position and orientation of the electrode relative to the conveyor belt 121.

[0051] When covered by an electrode: infrared light is reflected / absorbed by the electrode, and the signal at the receiving end is weak (or strong, depending on the contrast between the electrode color and the conveyor belt 121). When uncovered (exposed to the conveyor belt 121): infrared light is reflected by the conveyor belt 121, and the signal at the receiving end is strong (or weak). The signal transition point = the position of the electrode edge.

[0052] Two infrared detectors are arranged perpendicular to the conveying direction (i.e., the width direction of conveyor belt 121), with a spacing slightly smaller than the standard width of the electrode. This arrangement is mainly used to detect the offset of the electrode in the left-right direction.

[0053] In another embodiment, two infrared detectors are arranged longitudinally, one in front of the other, along the conveying direction (i.e., the running direction of the conveyor belt 121), with a fixed spacing. This arrangement is mainly used to detect the position of the electrode in the front-back direction and to calculate the electrode length in conjunction with the encoder. With this arrangement, the two infrared detectors can be mounted on the top surface of the conveyor belt via a support frame, allowing for effective observation of goods on the conveyor belt surface.

[0054] In another embodiment, a diagonal arrangement is used, with one infrared detector positioned to the left front of the intended location of the electrode and the other to the right rear (or left rear and right front). This arrangement allows for the simultaneous detection of offset and rotation.

[0055] The sodium ion electrode 14 is transported individually using the conveyor belt 121. At this time, the moving track 131 is moved by the linear module. The infrared detector 134 on the outer surface of the fixed block 133 performs infrared detection on the moving sodium ion electrode 14 on the top surface of the conveyor belt 121 to detect the position and angle of the sodium ion electrode 14. At this time, the fixed block 133 is moved downward by the hydraulic cylinder 132, and the suction cup 137 at the output end of the motor 136 adheres to the outer surface of the sodium ion electrode 14. If the position of the sodium ion electrode 14 is tilted by the infrared detector 134, the sodium ion electrode 14 is rotated by the motor 136 to adjust the angle of the sodium ion electrode 14. This achieves the effect of using the infrared detector 134 to detect the position and angle of the sodium ion electrode 14, and then moving and adjusting the position of the sodium ion electrode 14 in subsequent movements, so as to facilitate the effective stacking and placement of the sodium ion electrode 14.

[0056] If the infrared detector 134 scans and positions the sodium ion electrode 14 to check whether the sodium ion electrode 14 is located at the marked position on the surface of the conveyor belt 121 and whether it is at the center of the conveyor belt 121, if the electrode is found to be significantly deviated from the center position of the conveyor belt 121 and offset from the marked position, it is considered to be off-center position. The system immediately drives the two sets of telescopic rods 135 on the outside of the fixing block 133 to drive the motor 136 to make precise fine adjustments in the horizontal direction until the suction cup 137 accurately stops directly above the electrode. Subsequently, hydraulic cylinder 132 descends, and suction cup 137 contacts the upper surface of the electrode. The air inside is instantly expelled, forming a semi-vacuum, and the electrode is firmly adsorbed. After being transferred to the stacking mechanism station, air pump 138 supplies air in reverse, the vacuum inside the suction cup is quickly broken, and the electrode falls off smoothly. This closed-loop control realizes full automation of the process of "offset detection - rapid correction - reliable gripping - non-destructive release", significantly improving the gripping cycle and position accuracy. At the same time, after suction cup 137 contacts the upper surface of the electrode, the air inside is quickly expelled by the continuous downward pressure of hydraulic cylinder 132, forming a "semi-vacuum" negative pressure zone about 30-50 kPa lower than atmospheric pressure. This negative pressure value can provide sufficient adsorption force (≥ 0.4 N cm⁻²), and avoid the electrode shell from deforming or breaking due to excessive suction. The trace amount of gas remaining at the lip of the suction cup can act as a buffer pad to prevent the metal suction cup from hard contacting the electrode and causing surface scratches.

[0057] like Figure 1 , Figure 3-6As shown, the stacking mechanism includes a liftable top plate 113, a U-shaped end plate 1210, and a bending drive device that pushes the upper end of the U-shaped end plate 1210 to bend and deform to cover the stacked battery cell module. The top plate 113 is mounted on the top of the hydraulic cylinder 112. A slot 122 is provided on the top surface of the electrode transport table 12, located at one edge of the conveyor belt 121, and corresponding to the bottom surface of the hot pressing chamber 111 of the hot pressing shaping mechanism. When the hydraulic cylinder 112 extends to its position, the top plate 113 is flush with the top surface of the electrode transport table 12. When the hydraulic cylinder 112 retracts to its position, the top plate 113 is flush with the bottom surface of the hot pressing chamber 111. There are two bending drive devices, which are located on the electrode transport table 12 on both sides of the slot 122. The bending drive device includes a side support frame 123. A hydraulic cylinder 124 is fixedly installed on the inner wall of the side support frame 123. The output of the hydraulic cylinder 124 is... An extrusion positioning plate 125 is fixedly connected to the end of the device. A silicone spring block 126 is provided on the top surface of the extrusion positioning plate 125. An extrusion positioning plate 127 is fixedly connected to the outer surface of the silicone spring block 126. A hydraulic cylinder 128 is fixedly installed on the top outer surface of the side support frame 123. An L-shaped extrusion plate 129 is fixedly connected to the output end of the hydraulic cylinder 128. The inner wall of the L-shaped extrusion plate 129 is movably overlapped on the outer surfaces of the extrusion positioning plate 127 and the extrusion positioning plate 125. A U-shaped end plate 1210 is movably sleeved on the inner wall of the electrode transport table 12. An aluminum alloy soft strip 1211 is provided on the top surface of the U-shaped end plate 1210. When the hydraulic cylinder 128 extends, the horizontal plate of the L-shaped extrusion plate 129 extrudes and bends the extrusion positioning plate 127, and causes the aluminum alloy soft strip 1211 at the top of the U-shaped end plate 1210 to deform and bend.

[0058] In the specific implementation, initially, the front end face of the extrusion positioning plate 125 is tightly fitted with the vertical surface of the U-shaped end plate 1210, with their upper edges strictly flush, forming a continuous, stepless reference line. When the hydraulic cylinder 128 pushes forward, the horizontal arm of the L-shaped extrusion plate 129 extends synchronously, its end contacting the back of the extrusion positioning plate 127 face-to-face. At this time, the silicone spring block hidden at the pivot of the positioning plate 127 first undergoes elastic compression, then produces a smooth swing trajectory—the positioning plate 127 rotates in a controlled manner around the fixed hinge point at 0–8°, rather than rigidly translating. During the swing, the leading edge of the extrusion positioning plate 127 gradually slides across the back of the aluminum alloy flexible strip 1211 like a "flexible finger." The aluminum alloy flexible strip 1211 is made of 0.8 mm thick 6063-T5 aluminum profile with anodized surface and a 0.1 mm PI film coating, producing a regular arc bend under a uniformly distributed load of 30–50 N, with a radius of curvature ≥ 25. The pressure is approximately 1 mm, which perfectly covers the shoulder edges of multiple sodium-ion electrode sheets 14. Since the entire extrusion vector remains in the horizontal plane and the soft strip and the cell module have a "line-to-surface" rolling contact, the maximum contact stress is controlled below 3 MPa. This avoids local indentations caused by traditional hard limiting and eliminates the risk of scratching the top sealing film due to excessive bending. At the same time, the continuous deformation characteristics of the silicone spring block give the system an overtravel buffer margin of 2–3 mm, which can adaptively compensate within the cell module thickness tolerance of ±0.2 mm, achieving a high-precision positioning effect of "flexible bonding - uniform limiting - zero scratches". The relatively soft aluminum material allows for better deformation processing and positioning and shaping.

[0059] like Figure 6 , Figure 7 As shown, a hot pressing chamber 111 is provided on the inner wall of the frame 11. The hot pressing chamber 111 has an opening on its side wall and is connected to a vacuum pump through an air pipe connector and an air pipe. A hydraulic cylinder 112 is fixedly installed on the bottom inner wall of the frame 11. The output end of the hydraulic cylinder 112 is fixedly connected to a top plate 113. The bottom surface of the U-shaped end plate 1210 is movably overlapped with the top surface of the top plate 113. The outer surface of the top plate 113 is movably sleeved on the inner wall of the slot 122. Two sets of hydraulic cylinders 114 are fixedly installed on the inner walls of both sides of the frame 11. The output ends of the two sets of hydraulic cylinders 114 are fixedly connected to a horizontal plate. The middle of the horizontal plate is fixed to one end of the push plate 115. The other end of the push plate 115 is fixedly connected to a closing push plate 116. A hot press 117 is installed on the inner upper wall of the hot pressing chamber 111. A closing door 118 is provided at the outlet of the hot pressing chamber 111.

[0060] After the sodium-ion electrode 14 is positioned, the sodium-ion electrode 14 is lowered by hydraulic cylinder 112 and moved to the entrance of the hot-pressing chamber 111. Then, hydraulic cylinder 2 114 pushes the push plate 115 and moves the sodium-ion electrode 14 and the U-shaped end plate 1210 into the hot-pressing chamber 111. After the sodium-ion battery enters the hot-pressing chamber, the "small air bubbles" between each layer of electrode and separator in the cell module are removed by a vacuum pump.

[0061] At this point, dry nitrogen is refilled into the chamber to restore normal pressure. The lid is then opened, and the robotic arm removes the pressed battery cell module.

Claims

1. An integrated automatic stacking and hot-pressing shaping device for sodium-ion battery cells, characterized in that: Includes an electrode conveying mechanism, a stacking mechanism, a transfer mechanism, and a hot pressing and shaping mechanism mounted on the frame (11); The electrode conveying mechanism is used to convey the die-cut electrode (14) to the stacking station; The stacking mechanism is located at one end of the electrode conveying mechanism and is used to stack the electrode sheets (14) conveyed by the electrode conveying mechanism. The transfer mechanism can operate horizontally between the discharge end of the electrode conveying mechanism and the stacking mechanism, and is used to transfer the electrode (14) on the electrode conveying mechanism to the stacking mechanism after correction; the transfer mechanism is located above the electrode conveying mechanism and the stacking mechanism. The hot pressing and shaping mechanism is used to shape and hot press the stacked battery cell modules, and the hot pressing and shaping mechanism is located below the electrode conveying mechanism.

2. The integrated automatic stacking and hot-pressing shaping equipment for sodium-ion battery cells according to claim 1, characterized in that: The electrode conveying mechanism includes an electrode transport platform (12) and a conveyor belt (121). The electrode transport platform (12) is horizontally located in the middle of the frame (11), and the conveyor belt (121) is located inside the electrode transport platform (12).

3. The integrated automatic stacking and hot-pressing shaping equipment for sodium-ion battery cells according to claim 1, characterized in that: The transfer mechanism includes a suction cup (137), an infrared detector (134), a motor (136), and a translation and lifting drive device; The suction cup (137) is mounted on the output shaft end of the motor (136). The inner cavity of the suction cup (137) is connected to the air pump (138) via the hose (139). The air pump (138) is fixed on the outer casing of the motor (136). The translation and lifting drive device is used to drive the suction cup (137) and the motor to move forward, backward, left, right and up. The motor (136) is installed at the output end of the translation and lifting drive device. The infrared detector (134) is used to detect the position and orientation of the electrode (14) on the electrode conveying mechanism. The infrared detector (134) is mounted on the translation and lifting drive device. The motor (136) is used to drive the suction cup (137) to rotate in order to correct the angle of the electrode (14).

4. The integrated automatic stacking and hot-pressing shaping equipment for sodium-ion battery cells according to claim 3, characterized in that: The translation and lifting drive device includes a moving track (131), a hydraulic cylinder (132), and a telescopic rod (135); The movable track (131) can move horizontally between the discharge end of the electrode conveying mechanism and the stacking mechanism; Two hydraulic cylinders (132) are arranged side by side along the longitudinal direction of the frame (11) under the moving track (131), and the top of the telescopic rods of the two hydraulic cylinders (132) are fixed with fixing blocks (133); There are two telescopic rods (135), which are symmetrically arranged on the opposite surfaces of two fixed blocks (133), and the motor (136) is fixed between the two telescopic rods (135); The infrared detectors (134) are two in number and are located at the lower ends of two fixed blocks (133).

5. The integrated automatic stacking and hot-pressing shaping equipment for sodium-ion battery cells according to claim 1, characterized in that: The stacking mechanism includes a liftable top plate (113), a U-shaped end plate (1210), and a bending drive device; The top plate (113) is mounted on the top of the hydraulic cylinder (112). The top surface of the electrode conveying platform (12) of the electrode conveying mechanism and the bottom surface of the hot pressing chamber (111) of the hot pressing shaping mechanism are both provided with slots (122) to accommodate the top plate (113). When the hydraulic cylinder (112) extends into position, the top plate (113) is flush with the top surface of the electrode conveying platform (12). When the hydraulic cylinder (112) retracts into position, the top plate (113) is flush with the bottom surface of the hot pressing chamber (111). The U-shaped end plate (1210) is located at the slot (122) of the electrode transport table (12) of the electrode conveying mechanism, and the upper end of the U-shaped end plate (1210) is an aluminum alloy soft strip (1211). The bending drive device consists of two sets, which are located on both sides of the electrode transport platform (12) at the slot (122). The bending drive device is used to push the upper end of the U-shaped end plate (1210) to bend and deform to cover the stacked cell module.

6. The integrated automatic stacking and hot-pressing shaping equipment for sodium-ion battery cells according to claim 5, characterized in that: The bending drive device includes a push plate assembly, and the electrode transport table (12) has notches on both sides to accommodate the push plate assembly; The push plate assembly includes a positioning extrusion plate and an L-shaped extrusion plate (129); The positioning extrusion plate includes an extrusion positioning plate one (125) and an extrusion positioning plate two (127). The extrusion positioning plate two (127) is mounted on the top of the extrusion positioning plate one (125) via a bendable and deformable silicone spring block (126). The extrusion positioning plate one (125) is mounted on the output end of the hydraulic cylinder three (124) and is flush with the vertical surface of the U-shaped end plate (1210). The L-shaped extrusion plate (129) is installed at the output end of the hydraulic cylinder four (128). When the hydraulic cylinder four (128) extends, the horizontal plate of the L-shaped extrusion plate (129) will extrude and bend the positioning plate two (127), and drive the aluminum alloy soft strip (1211) at the top of the U-shaped end plate (1210) to deform and bend.

7. The integrated automatic stacking and hot-pressing shaping equipment for sodium-ion battery cells according to claim 6, characterized in that: Hydraulic cylinders three (124) and four (128) on the same side are mounted side by side on a support frame (123).

8. The integrated automatic stacking and hot-pressing shaping equipment for sodium-ion battery cells according to claim 1, characterized in that: The hot pressing shaping mechanism includes a hot pressing chamber (111) located in the lower frame (11) of the electrode conveying mechanism; A hot press (117) is installed on the upper inner wall of the hot press chamber (111); The hot pressing chamber (111) is a cuboid with openings at both ends. One opening end of the hot pressing chamber (111) is provided with a closing door (118), and the other opening end is provided with a closing push plate (116) that can move horizontally with the drive mechanism. The hot pressing chamber (111) is connected to the vacuum pump through a pipeline.

9. The integrated automatic stacking and hot-pressing shaping equipment for sodium-ion battery cells according to claim 1, characterized in that: The drive mechanism includes a push plate (115) and two hydraulic cylinders (114). The two hydraulic cylinders (114) are arranged side by side and their output ends are fixed on a horizontal plate. The two ends of the push plate (115) are fixed to the horizontal plate and the closing push plate (116) respectively.

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