Battery cell folding and ironing device and soft package battery production line

Abstract

The invention discloses a battery cell folding and ironing device and a soft package battery production line, the battery cell folding and ironing device comprises a bearing mechanism and a positioning mechanism, the bearing mechanism is provided with a plane for placing a battery cell, the positioning mechanism comprises a first positioning assembly and a second positioning assembly, the first positioning assembly is arranged on the plane, and the second positioning assembly is arranged on the plane. The battery cell is fixed on the plane through the first positioning assembly, the second positioning assembly is arranged above the battery cell, and the second positioning assembly has a working state in which the battery cell is pressed on the plane and a non-working state in which the second positioning assembly is separated from the battery cell. According to the folding and ironing device, the positions of the battery cells can be guaranteed through the designed positioning mechanism, and then the technical problem that the appearance size precision is low due to the fact that the battery cells are prone to dislocation in an existing folding and ironing device is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery core folding and ironing devices, and particularly relates to a battery core folding and ironing device and a flexible packaging battery production line. Background Art

[0002] To ensure the encapsulation effect of the battery core, relatively wide areas are generally left on both sides of the main body of the battery core during the production of flexible packaging batteries for sealing. After the battery core is formed, a folding and ironing device is used to fold and iron the two sides of the battery core to meet the width requirements. However, the traditional folding and ironing device does not have a positioning function, and the battery core cannot be well fixed after being transferred to the bearing platform, resulting in easy dislocation during the folding and ironing process, affecting the dimensional accuracy of the appearance of the battery core after folding and ironing, and further affecting the quality of subsequent processes. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, and propose a battery core folding and ironing device and a flexible packaging battery production line. The designed positioning mechanism can ensure the position of the battery core, thereby solving the technical problem that the existing folding and ironing device is prone to battery core dislocation and resulting in low appearance dimensional accuracy.

[0004] To achieve the above technical purpose, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a battery core folding and ironing device, including: A bearing mechanism, the bearing mechanism having a plane for placing the battery core; A positioning mechanism, including a first positioning component and a second positioning component. The first positioning component is arranged on the plane, the battery core is fixed on the plane through the first positioning component, the second positioning component is arranged above the battery core, and the second positioning component has a working state of pressing the battery core against the plane and a non-working state of separating from the battery core.

[0005] In some embodiments, the first positioning component includes a positioning plate and suction cups. The positioning plate is arranged on the plane, the positioning plate is formed with a plurality of through holes along its thickness direction, the suction cups are arranged in the cavities corresponding to the through holes one by one, and the adsorption surfaces of the suction cups face the battery core.

[0006] In some embodiments, one side of the positioning plate is formed with an avoidance groove extending from one side edge of the positioning plate towards its opposite side.

[0007] In some embodiments, the second positioning component includes a mounting frame, a pressurizing driving member, and a pressurizing head. The mounting frame is arranged above the battery core, the pressurizing driving member is fixed on the mounting frame, and the pressurizing head is connected to the telescopic end of the pressurizing driving member.

[0008] In some embodiments, the pressing head includes a connecting plate, a first pressing plate, and a second pressing plate. The connecting plate is fixed to the telescopic end of the pressing driving member, the first pressing plate is fixed to the lower surface of the connecting plate, and the second pressing plate is fixed to the end of the connecting plate.

[0009] In some embodiments, the second positioning assembly further includes guide rods. Four of the guide rods are distributed at the four corners with the pressing driving member as the center. One end of each guide rod passes through the mounting frame and is fixedly connected to the connecting plate.

[0010] In some embodiments, there are two first positioning assemblies, and the two first positioning assemblies are symmetrically arranged on the plane. The second positioning assembly is arranged above one of the first positioning assemblies.

[0011] In some embodiments, the carrying mechanism includes a fixed frame, a rotation driving member, and a carrying platform. The rotation driving member is fixed on the fixed frame. The center of the bottom of the carrying platform is connected to the rotating end of the rotation driving member. The top of the carrying platform forms the plane. The carrying platform rotates 180° through the rotation driving member to alternately rotate the two first positioning assemblies to the lower side of the second positioning assembly.

[0012] In some embodiments, the battery cell folding and ironing device further includes a shaping mechanism, a hemming mechanism, and an edge ironing mechanism. The shaping mechanism is arranged on both sides of one of the first positioning assemblies, and the hemming mechanism and the edge ironing mechanism are respectively arranged on both sides of the other first positioning assembly.

[0013] In a second aspect, the present invention further provides a soft-pack battery production line, including the battery cell folding and ironing device provided in the first aspect of the present invention, a formation device, a sorting device, and a conveyor belt. The conveyor belt connects the formation device and the sorting device. The battery cell folding and ironing device is arranged between the formation device and the sorting device and on one side of the conveyor belt.

[0014] Compared with the prior art, the beneficial effects of the present invention mainly include: The battery cell folding and ironing device provided by the present invention can fix the battery cell on the plane of the carrying mechanism through the designed first positioning assembly. At the same time, the battery cell can be pressed tightly through the designed second positioning assembly. In this way, the battery cell will not be misaligned during hemming and edge ironing, ensuring the dimensional accuracy of hemming and edge ironing, which is beneficial to the subsequent processes of the battery, thereby improving the overall accuracy of the battery. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the battery cell folding and ironing device of the present invention; Figure 2 is the structural schematic diagram showing the positioning mechanism; Figure 3 is a schematic structural diagram of the positioning plate; Figure 4 is a schematic structural diagram showing the shaping structure; Figure 5 is a schematic structural diagram showing the carrying mechanism; Figure 6 is a schematic structural diagram of the hemming mechanism and the edge ironing mechanism of the present invention; Figure 7 is a schematic structural diagram of the grasping mechanism of the present invention.

[0016] Explanation of reference numerals: 100, positioning mechanism, 110, first positioning component, 111, positioning plate, 1111, through hole, 1112, avoidance groove, 112, suction cup, 120, second positioning component, 121, mounting bracket, 122, pressure driving member, 123, pressure head, 1231, connecting plate, 1232, first pressing plate, 1233, second pressing plate, 124, guide rod; 200, carrying mechanism, 210, fixing frame, 220, rotation driving member, 230, carrying platform; 300, shaping mechanism, 310, base, 320, first sliding table cylinder, 330, first double rod cylinder, 340, first shaping block, 350, two-way cylinder, 360, second shaping block, 370, third shaping block; 400, hemming mechanism, 410, bracket, 420, second sliding table cylinder, 430, adjusting plate, 440, slide rail fixing plate, 450, linear slide rail, 460, roller bracket, 470, roller, 480, adjusting bolt, 490, buffer; 500, edge ironing mechanism, 510, frame body, 520, third sliding table cylinder, 530, second double rod cylinder, 540, ironing head base, 550, ironing head, 560, heat insulation plate; 600, grasping mechanism, 610, gantry frame, 620, rotary cylinder, 630, fourth sliding table cylinder, 640, manipulator; 700, bottom plate; 800, battery cell. Detailed implementation manners

[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present 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 only used to explain the present invention and are not used to limit the present invention.

[0018] Aiming at the technical problem that the existing battery cell folding and ironing device does not have a positioning function, which easily causes misalignment during edge folding and ironing and affects the manufacturing accuracy of the battery cell, the present invention provides a battery cell folding and ironing device. Its design is to install a positioning device on the platform for placing the battery cell so that the battery cell is not prone to shaking, thereby improving the manufacturing accuracy of the battery cell. The specific solution is as follows: As Figure 1 shown, the present invention provides a battery cell folding and ironing device, including a positioning mechanism 100 and a bearing mechanism 200. The bearing mechanism 200 has a plane for placing the battery cell 800. The positioning mechanism 100 includes a first positioning component 110 and a second positioning component 120. The first positioning component 110 is arranged on the plane. The battery cell 800 is fixed on the plane through the first positioning component 110. The second positioning component 120 is arranged above the battery cell 800. The second positioning component 120 has a working state of pressing the battery cell 800 against the plane and a non-working state of separating from the battery cell 800.

[0019] In this way, when the battery cell 800 is transferred to the plane of the bearing mechanism 200, it can be fixed on this plane through the first positioning component 110. At the same time, the second positioning component 120 moves downward to apply pressure to the battery cell 800. The two work together to firmly fix the battery cell 800 on the plane, making it not prone to misalignment, ensuring the process accuracy of edge folding and ironing, and thus ensuring the manufacturing accuracy of the entire battery. After edge folding and ironing are completed, the second positioning component moves upward to cancel the pressure on the battery cell 800, facilitating the removal of the battery cell 800.

[0020] In one embodiment, as shown in Figure 2 and Figure 3 shown, the first positioning component 110 includes a positioning plate 111 and suction cups 112. The positioning plate 111 is arranged on the plane. Specifically, the bottom of the positioning plate 111 is laid flat on the upper surface of the plane. The positioning plate 111 is formed with a plurality of through holes 1111 along its thickness direction. The suction cups 112 correspond to the through holes 1111 one by one and are arranged in the through holes 1111. The adsorption surface of each suction cup 112 faces the battery cell 800 to form an adsorption effect on the battery cell 800.

[0021] In this embodiment, the bottom of the battery cell 800 is laid flat on the upper surface of the positioning plate 111, and then the suction cups 112 are arranged in the through holes 1111, which can form an adsorption effect on the battery cell 800, sucking the battery cell 800 tightly to prevent the battery cell 800 from misaligning; the suction cups 112 can be vacuum suction cups or electromagnetic suction cups.

[0022] In one embodiment, an avoidance groove 1112 extending from one side edge of the positioning plate 111 towards its opposite side is formed on one side of the positioning plate 111. The avoidance groove 1112 is used for the shaping mechanism 300 to avoid interfering when shaping the side edge of the battery cell 800 where the tab is installed.

[0023] In one embodiment, the second positioning assembly 120 includes a mounting frame 121, a pressurizing driving member 122, and a pressing head 123. The mounting frame 121 is disposed above the battery cell 800. The pressurizing driving member 122 is fixed on the mounting frame 121, and the pressing head 123 is connected to the telescopic end of the pressurizing driving member 122.

[0024] In this embodiment, the mounting frame 121 can be fixed on the bracket 410 of the hemming mechanism 400. The pressurizing driving member 122 is a cylinder. The telescopic rod of the cylinder passes through the mounting frame 121, and the pressing head 123 is installed at the end of the telescopic rod and can move up and down driven by the telescopic rod of the cylinder.

[0025] In one embodiment, the pressing head 123 includes a connecting plate 1231, a first pressing plate 1232, and a second pressing plate 1233. The connecting plate 1231 is fixed on the telescopic rod of the cylinder. The first pressing plate 1232 is fixed on the lower surface of the connecting plate 1231, and the second pressing plate 1233 is fixed at the end of the connecting plate 1231.

[0026] In this embodiment, both the first pressing plate 1232 and the second pressing plate 1233 are made of insulating plastic material. The first pressing plate 1232 is used to apply pressure to the top of the battery cell 800, while the second pressing plate 1233 is used to apply pressure to the tab of the battery cell 800 to fix the battery cell 800.

[0027] In one embodiment, the second positioning assembly 120 further includes guide rods 124. Four of the guide rods 124 are distributed at the four corners with the pressurizing driving member 122 as the center. One end of the guide rod 124 passes through the mounting frame 121 and is fixedly connected to the connecting plate 123. The arrangement of the guide rods 124 can ensure that the pressurizing driving member 122 moves up and down without deviation.

[0028] In one embodiment, there are two first positioning assemblies 110. The two first positioning assemblies 110 are symmetrically arranged on the plane, and the second positioning assembly 120 is disposed above one of the first positioning assemblies 110.

[0029] Based on the above embodiments, as Figure 5As shown, the carrying mechanism 200 includes a fixing frame 210, a rotation driving member 220, and a carrying platform 230. The rotation driving member 220 is fixed on the fixing frame 210. The center of the bottom of the carrying platform 230 is connected to the rotation end of the rotation driving member 220. The top of the carrying platform 230 forms the plane. The carrying platform 230 rotates 180° through the rotation driving member 220, and rotates the two first positioning components 110 to the lower side of the second positioning component 120 in turn.

[0030] In this embodiment, the rotation driving member 220 is a rotary cylinder. The rotary cylinder is arranged in the middle of the bottom of the carrying platform 230. The carrying platform 230 rotates driven by the rotary cylinder 220. Thus, the two first positioning components 110 on the plane also rotate accordingly. When the battery cell 800 on one side of a first positioning component 110 is being shaped, the battery cell 800 on the other side of the first positioning component 110 is being flanging and hemming. By rotating repeatedly like this, continuous operation can be carried out to improve the operation efficiency.

[0031] In one of the embodiments, the battery cell folding and ironing device of the present invention further includes a shaping mechanism 300, as Figure 4 shown. The shaping mechanism 300 includes a base 310, a first sliding table cylinder 320, a first double-rod cylinder 330, a first shaping block 340, a two-way cylinder 350, a second shaping block 360, and a third shaping block 370. The first sliding table cylinder 320 is fixed on the base 310. The first double-rod cylinder 330 is fixed on the first sliding table cylinder 320, and the push rod of the first double-rod cylinder 330 faces the battery cell 800. The first shaping block 340 is fixed on the push rod of the first double-rod cylinder 330. Then, the first shaping block 340 drives the battery cell 800 to shape its side surface under the drive of the double-rod cylinder 330, and the first sliding table cylinder 320 can drive the first double-rod cylinder 330 and the first shaping block 340 to move up and down to select a suitable height for shaping. The two-way cylinder 350 is installed on the plane of the carrying platform 230 and is located between the two first positioning components 110. The two second shaping blocks 360 are respectively fixed on the two push rods of the two-way cylinder 350. Then, the two second shaping blocks 360 can shape the side surfaces of the battery cells 800 on both sides respectively under the drive of the push rods of the two-way cylinder 350. The third shaping block 370 is arranged on the side of the battery cell 800 away from the second shaping block 360 to hold the battery cell 800.

[0032] In this embodiment, the side surface of the first shaping block 340 in contact with the battery cell 800 is V-shaped, that is, this side surface gradually forms a concave portion from both side edges to the middle. This concave portion is used to place the side edge of the battery cell 800 to be flanged. The upper and lower ends of the concave portion can push the main body of the battery cell 800 to be shaped. Thus, the side edge of the battery cell 800 that needs to be flanged can be not damaged during shaping.

[0033] In this embodiment, a chamfer is provided on one side of the third shaping block 370 that contacts the battery cell 800, so that the battery cell 800 can fall entirely into the shaping area of the shaping structure 300 when being transferred.

[0034] In this embodiment, there are two shaping mechanisms 300, which are respectively arranged on both sides of the first positioning component 110 without the second positioning component 120 above, so as to shape both sides of the battery cell 800 simultaneously.

[0035] In one embodiment, as Figure 6 shown, the battery cell folding and ironing device further includes a hemming mechanism 400. The hemming mechanism 400 includes a bracket 410, a second slide cylinder 420, an adjustment plate 430, a slide rail fixing plate 440, a linear slide rail 450, a roller bracket 460, a roller 470, an adjustment bolt 480 and a buffer 490. The brackets 410 are respectively arranged on both sides of the first positioning component 110 where the second positioning component 120 is provided above. Both sides of the mounting frame 121 of the second positioning component 120 are respectively connected to the two brackets 410. The slide cylinder 420 is fixed on each bracket 410, the adjustment plate 430 is fixed on the slide cylinder 420, the slide rail fixing plate 440 is fixed on the top of the adjustment plate 430, the linear slide rails 450 are symmetrically fixed on the slide rail fixing plate 440, the roller bracket 460 is fixed on the linear slide rail 450, the roller 470 is installed on the roller bracket 460, the adjustment bolts 480 and the buffers 490 are symmetrically fixed on both sides of the adjustment plate 430 and are respectively aligned with the linear slide rail 450. In this way, the adjustment plate 430 can move up and down driven by the second slide cylinder 420, and then drive the slide rail fixing plate 440 to move, so as to finally realize the up and down movement of the roller 470. At the same time, the linear slide rail 450 can move horizontally to adjust the distance between the roller 470 and the battery cell 800. In addition, the position of the roller bracket 460 on the adjustment plate 430 is adjusted by the adjustment bolt 480 and buffered by the buffer 490.

[0036] In one embodiment, the cell folding and ironing device further includes an edge ironing mechanism 500, which includes a frame 510, a third slide cylinder 520, a second double-rod cylinder 530, an ironing head base 540 and an ironing head 550. The third slide cylinder 520 is fixed on the frame 510, the second double-rod cylinder 530 is fixed on the third slide cylinder 520, the ironing head base 540 is fixed on the second double-rod cylinder 530, and the ironing head 550 is fixed on the ironing head base 540. During use, the third slide cylinder 520 can drive the second double-rod cylinder 530 to move up and down, thereby driving the ironing head 550 to move up and down. At the same time, the second double-rod cylinder 530 can drive the ironing head 550 to move horizontally. In this way, the third slide cylinder 520 and the second double-rod cylinder 530 can drive the ironing head 550 to adjust its position in the X direction and the Y direction respectively to align with the folding and ironing edge of the cell 800.

[0037] In one embodiment, a heat insulation plate 560 is further arranged outside the ironing head 550.

[0038] In one embodiment, the cell folding and ironing device further includes a grasping mechanism 600 for transferring the cell 800 from the conveyor belt to the loading mechanism 200. As Figure 7 shown, the grasping mechanism 600 includes a gantry frame 610, a rotary cylinder 620, a fourth slide cylinder 630 and a manipulator 640. The gantry frame 610 spans directly above the conveyor belt connected to the sorting device. The rotary cylinder 620 is fixed on the gantry frame 610. The bottom of the fourth slide cylinder 630 is connected to the rotary cylinder 620, and the manipulator 640 is fixed on the fourth slide cylinder 630. In this way, the manipulator 640 can rotate 180° driven by the rotary cylinder 620. A suction cup is installed at the end of the manipulator 640 for adsorbing the cell 800 to grasp and transfer the cell 800 from the conveyor belt to the loading platform 230.

[0039] In addition, the cell folding and ironing device provided by the present invention further includes a bottom plate 700 for installing each mechanism.

[0040] The working principle of the cell folding and ironing device provided by the above technical solution is as follows: First, the gripping mechanism 600 grabs the battery cell 800 from the conveyor belt, rotates it 180°, and then places the battery cell 800 on the carrying mechanism 200. After that, the shaping mechanism 300 rises to shape the battery cell 800. After the shaping is completed, the battery cell 800 is fixed on the first positioning component 110, the shaping mechanism 300 descends, and the carrying mechanism 200 rotates 180° to transfer the shaped battery cell 800 to the hemming and edge-ironing area. The second positioning component 120 descends to press the battery cell 800 tightly. At the same time, the gripping mechanism 600 grabs another battery cell 800 from the conveyor belt and places it on another working position of the carrying mechanism 200. Then, the hemming mechanism 400 descends to complete the hemming and then rises. At the same time, the edge-ironing mechanism 500 rises and controls the ironing head 550 to move towards the battery cell 800 for edge-ironing, and the shaping work of the other working position is carried out synchronously. After the edge-ironing is completed, the ironing head 550 moves back, the second positioning component 120 rises, and the carrying mechanism 200 rotates 180° to transfer another shaped battery cell 800 to the folding and ironing area. The gripping mechanism 600 grabs the battery cell 800 and exchanges the positions of the battery cell 800 with the completed hemming and edge-ironing and the battery cell 800 without hemming and edge-ironing on the conveyor belt. By repeating this cycle, the work is completed.

[0041] In addition, during the manufacturing process of traditional soft-pack batteries, generally, the formed battery cell 800 is first subjected to hemming and ironing and then to grading. When the edge of the battery cell 800 is hemmed at 90° or 270°, the edge of the battery cell will be in a vertical state, resulting in scratching between the vertical edge and the inner lining of the frame when the battery cell 800 is graded in the feeding frame, which affects the appearance of the battery cell 800.

[0042] To solve the above technical problems, in the second aspect of the present invention, a soft-pack battery production line is provided. The production line includes a grading device, a sorting device, a conveyor belt, and the battery cell folding and ironing device provided in the first aspect of the present invention. The battery cell folding and ironing device is arranged between the grading device and the sorting device and on one side of the conveyor belt. That is, the soft-pack battery production line provided by the present invention first grades the shaped battery cell 800, and then subjects the graded battery cell 800 to folding and ironing through the folding and ironing device of the present invention. In this way, the situation of scratching between the vertical edge and the inner lining of the frame is avoided, and the folding and ironing device of the present invention is designed with a positioning mechanism 100, which can prevent misalignment. Considering the above factors, the soft-pack battery production line provided by the present invention can improve the appearance quality of the battery.

[0043] The specific embodiments of the present invention described above do not constitute a limitation to the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery folding and ironing device, characterized in that: include: A carrying mechanism, wherein the carrying mechanism has a plane for placing the battery cell; The positioning mechanism includes a first positioning component and a second positioning component, wherein the first positioning component is arranged on the plane, and the battery cell is fixed on the plane through the first positioning component, and the second positioning component is arranged above the battery cell, and the second positioning component has a working state of pressing the battery cell to the plane and a non-working state of being separated from the battery cell.

2. The battery folding and ironing device according to claim 1, characterized in that: The first positioning component includes a positioning plate and a suction cup. The positioning plate is arranged on the plane. The positioning plate has a plurality of through holes formed along its thickness direction. The suction cup is arranged in the through holes in a one-to-one correspondence with the through holes, and the adsorption surface of the suction cup faces the battery core.

3. The battery folding and ironing device according to claim 2, characterized in that: A avoidance groove extending from one side of the positioning plate to the opposite side is formed on one side of the positioning plate.

4. The battery folding and ironing device according to claim 3, characterized in that: The second positioning assembly includes a mounting frame, a pressurizing driving member and a pressurizing head. The mounting frame is arranged above the battery core, the pressurizing driving member is fixed on the mounting frame, and the pressurizing head is connected to the telescopic end of the pressurizing driving member.

5. The battery folding and ironing device according to claim 4, characterized in that: The pressure head includes a connecting plate, a first pressure plate and a second pressure plate, wherein the connecting plate is fixed to the telescopic end of the pressure driving member, the first pressure plate is fixed to the lower surface of the connecting plate, and the second pressure plate is fixed to the end of the connecting plate.

6. The battery folding and ironing device according to claim 5, characterized in that: The second positioning assembly also includes a guide rod, and four guide rods are distributed at four corners with the pressurized driving member as the center, and one end of the guide rod passes through the mounting frame and is fixedly connected to the connecting plate.

7. The battery folding and ironing device according to any one of claims 2 to 6, characterized in that: The first positioning components include two, the two first positioning components are symmetrically arranged on the plane, and the second positioning component is arranged above one of the first positioning components.

8. The battery folding and ironing device according to claim 7, characterized in that: The carrying mechanism includes a fixed frame, a rotating drive member and a carrying platform, the rotating drive member is fixed on the fixed frame, the bottom center of the carrying platform is connected to the rotating end of the rotating drive member, the top of the carrying platform forms the plane, and the carrying platform is rotated 180° by the rotating drive member to rotate the two first positioning components to the bottom of the second positioning component in turn.

9. The battery folding and ironing device according to claim 8, characterized in that: It also includes a shaping mechanism, a folding mechanism and a hot-edge mechanism. The shaping mechanism is arranged on both sides of one of the first positioning components, and the folding mechanism and the hot-edge mechanism are respectively arranged on both sides of another first positioning component.

10. A soft pack battery production line, characterized in that: include: The battery folding and ironing device according to any one of claims 1 to 9, and A capacity dividing device, a sorting device and a conveyor belt, wherein the conveyor belt connects the capacity dividing device and the sorting device, and the battery cell folding and ironing device is arranged between the capacity dividing device and the sorting device and is located on one side of the conveyor belt.

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