Lithium ion core rolling and combining device

Abstract

The utility model provides a lithium ion roll core closing device which comprises core closing rotating mechanisms, tab shape adjusting mechanisms and a top cover positioning mechanism, the core closing rotating mechanisms are arranged on two sides of the top cover positioning mechanism, and the tab shape adjusting mechanisms are arranged on the other two sides of the top cover positioning mechanism. According to the utility model, the parallel roll cores are positioned through the core combining rotating mechanism, then the shapes of the tabs are adjusted through the tab shape adjusting mechanism, then the parallel roll cores are subjected to core combining rotation through the core combining rotating mechanism, and meanwhile, core combining is completed by utilizing the top cover positioning mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a lithium-ion core combining device. Background Art

[0002] A lithium-ion battery core is usually a core wound by multiple independent positive and negative electrode plates and diaphragms of a certain length. Then, the core tabs are paired and connected in parallel by ultrasonic welding through positive and negative connection plates, and the positive and negative connection plates are laser welded to the top cover. In this way, multiple cores are combined through a core combining device, pasted with tape and fixed, and then pushed into the battery case for assembly. However, usually, each positive and negative electrode of the core has 30-50 tabs, with a height of about 20-30 mm. When combining cores, so many tabs will cause bifurcation and folding in the middle part. Then, under the action of the thrust, the core is pushed into the battery case, and the bifurcated and folded tabs contact the opposite-polarity electrode plates in the core, resulting in contact short circuit. Some battery cores can be detected in time during the short circuit detection in the assembly process. There are also some battery cores that, after being installed in vehicles at the market end, with different road conditions, the core fluctuates in the battery case. When the bifurcated and folded tabs contact the opposite-polarity electrode plates in the core, it causes under-voltage problems in the battery pack. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is how to avoid the bifurcation and folding of the tabs when combining multiple cores.

[0004] The utility model realizes the solution of the above technical problem through the following technical means:

[0005] The utility model provides a lithium-ion core combining device, which includes a core combining rotation mechanism, a tab morphology adjustment mechanism and a top cover positioning mechanism. The core combining rotation mechanism is fixed on both sides of the top cover positioning mechanism, and the tab morphology adjustment mechanism is fixed on the other two sides of the top cover positioning mechanism.

[0006] Beneficial Effects: The utility model positions the parallel cores through the core combining rotation mechanism, then adjusts the tab morphology through the tab morphology adjustment mechanism, and then rotates and combines the parallel cores through the core combining rotation mechanism, and at the same time completes the core combination by using the top cover positioning mechanism.

[0007] Preferably, the core combining rotation mechanism includes two groups of core positioning components and a rotation component, and the core positioning components are movably connected to the rotation component.

[0008] Preferably, the two groups of core positioning components and the rotation component of the core combining rotation mechanism are respectively arranged on the upper and lower sides of the top cover positioning mechanism.

[0009] Beneficial effects: Each set of core positioning components and rotating components is used to position and rotate one of the parallel cores. By arranging two sets of core positioning components and rotating components on the upper and lower sides of the top cover positioning mechanism, two cores in the parallel cores can be fixed and rotated, and the two cores are landed above the top cover positioning mechanism in the middle of the core combining and rotating mechanism through the rotating tab. Then, the core combining is completed through the top cover positioning mechanism.

[0010] Preferably, the core positioning component includes a first clamping block, a first propulsion cylinder, a second clamping block, a second propulsion cylinder, a pushing block, a third propulsion cylinder, and a core placement seat. The first clamping block and the second clamping block are arranged on opposite sides of the core placement seat. The pushing block is arranged on the other side of the core placement seat. The first propulsion cylinder, the second propulsion cylinder, and the third propulsion cylinder are respectively connected to the first clamping block, the second clamping block, and the pushing block, and are fixed to the bottom of the core placement seat.

[0011] Preferably, the rotating component includes a support rod, a motor connecting shaft, and a rotating shaft. Circular holes are provided at both ends of the core placement seat, and corresponding circular holes are provided at the top of the support rod. The support rod is arranged on both sides of the core placement seat, and the core placement seat is arranged at the top of the two support rods and connected through the motor connecting shaft and the rotating shaft.

[0012] Preferably, the tab morphology adjustment mechanism includes two sets of single-side adjustment components. The single-side adjustment component includes a slider, a support seat, a first cylinder, a second cylinder, a first clamping needle, and a second clamping needle. The bottom of the support seat is connected to the slider. The first cylinder and the second cylinder are respectively fixed on both sides of the top of the support seat. The telescopic ends of the first cylinder and the second cylinder are respectively connected to the first clamping needle and the second clamping needle.

[0013] Preferably, the lithium-ion core combining device further includes a fixed table, and the fixed table is provided with a guide rail block, and the slider is fixed on the guide rail block.

[0014] Preferably, the two sets of single-side adjustment components of the tab morphology adjustment mechanism are respectively arranged on the left and right sides of the top cover positioning mechanism.

[0015] Beneficial effects: The two sets of single-side adjustment components are arranged on the left and right sides of the top cover positioning mechanism. The root of the tab is fixed by the clamping needles of the single-side adjustment components to prevent the tab from forking and folding inward during core combining.

[0016] When the parallel cores are placed on the core placement seat, two clamping needles of each of the two sets of single-side adjustment components move towards each other through the slider to the tab position, and then the two clamping needles move away from each other through the contraction of the cylinder to contact the root of the tab, preventing the tab from forking and folding inward during core combining; when the core combining is completed, the two clamping needles of each set respectively move towards each other through the extension of the cylinder, and the slider moves in the reverse direction to withdraw from the tab position.

[0017] Preferably, the top cover positioning mechanism includes a positioning plate, a connecting rod, a transfer plate, a cylinder, a fixing plate and a limit screw. The positioning plate is connected to the transfer plate through the connecting rod. The cylinder is fixed on the fixing plate, and the telescopic end of the cylinder is connected to the transfer plate. The upper part of the fixing plate is provided with a limit screw, and the lower part is provided with a threaded hole.

[0018] Beneficial effects: The top cover positioning mechanism positions the top cover through the positioning plate to prevent the top cover from being placed offset, which affects core combination. The limit screw limits the maximum distance of the downward movement of the positioning plate driven by the cylinder. The positioning plate moves downward under the action of the cylinder to release space for ear bending.

[0019] Preferably, the positioning plate is provided with a profiling groove, and the length of the limit screw is 4 - 5 mm.

[0020] Beneficial effects: The positioning plate is provided with a profiling groove for top cover positioning. When combining cores, the positioning plate fixed on the transfer plate through the connecting rod is pulled downward under the action of the cylinder fixed on the fixing plate. When the length of the limit screw is 4 - 5 mm, the positioning plate moves down the most suitable distance. The limit distance should not be too large, otherwise the top cover positioning function will be lost and the top cover is likely to be skewed after core combination. If it is too small, the ears are likely to be folded inward under force.

[0021] The advantages of the present utility model are as follows:

[0022] The present utility model effectively prevents multiple ears from bifurcating and folding during core combination of the winding core, and also avoids the short - circuit situation caused by the contact between the bifurcated and folded ears and the opposite - pole electrode sheet in the winding core. Its structure is simple, efficient, and has high interchangeability. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of a lithium - ion winding core core - combining device provided by the embodiment;

[0024] Figure 2 is a schematic structural diagram of the core - combining rotation mechanism provided by the embodiment;

[0025] Figure 3 is a schematic structural diagram of the unilateral adjustment component provided by the embodiment;

[0026] Figure 4 is a schematic structural diagram of the ear morphology adjustment mechanism provided by the embodiment;

[0027] Figure 5 is a schematic structural diagram of the top cover positioning mechanism provided by the embodiment. Detailed Embodiments

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model; in addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. It should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Embodiment 1

[0031] As Figures 1-5 shown, the lithium-ion core combining device provided in this embodiment includes a core combining rotation mechanism 100, an ear morphology adjustment mechanism 200, a top cover positioning mechanism 300, and a fixed table 400.

[0032] As Figures 1-2 shown, the core combining rotation mechanism 100 includes two sets of core positioning components 110 and a rotation component 120, and the core positioning components 110 are movably connected to the rotation component 120. The two sets of core positioning components 110 and the rotation component 120 of the core combining rotation mechanism 100 are arranged on the upper and lower sides of the top cover positioning mechanism 300 along the y-axis.

[0033] Each set of core positioning components 110 and rotating components 120 is used to position and rotate one of the parallel cores. Two sets of core positioning components 110 and rotating components 120 are arranged on the upper and lower sides of the top cover positioning mechanism 300 along the y-axis, exactly fixing and rotating two cores in the parallel cores, and the two cores are placed above the top cover positioning mechanism 300 in the middle of the core combining and rotating mechanism 100 through the rotating tab. Then, the core combining is completed through the top cover positioning mechanism 300.

[0034] The core positioning component 110 includes a first clamping block 111, a first propulsion cylinder 112, a second clamping block 113, a second propulsion cylinder 114, a pushing block 115, a third propulsion cylinder 116, and a core placement seat 117.

[0035] The core placement seat 117 includes a rectangular plate (not shown in the figure) and a connecting rod (not shown in the figure). The connecting rod is fixed at the positions of the two side corners of the rectangular plate. The rectangular plate and the connecting rod are integrally formed. The two ends of the core placement seat 117 refer to the tops of the connecting rods. Round holes (not shown in the figure) are provided on the side surfaces of the tops of the connecting rods.

[0036] The first clamping block 111 and the second clamping block 113 are arranged on the opposite sides of the rectangular plate of the core placement seat 117, referring to the two sides in the x-axis direction. The pushing block 115 is arranged on the other side of the rectangular plate. The pushing block 115 is arranged on the outermost side of the rectangular plate, referring to the outermost side in the y-axis direction. The first clamping block 111, the second clamping block 113, and the pushing block 115 are arranged at the middle positions of the side edges of the rectangular plate. The shapes of the first clamping block 111, the pushing block 115, and the second clamping block 113 are "7" shaped, used for clamping the core to position the core. The surfaces of the first clamping block 111, the pushing block 115, and the second clamping block 113 are attached with U-force glue to prevent the core from being scratched.

[0037] The first propulsion cylinder 112, the second propulsion cylinder 114, and the third propulsion cylinder 116 are respectively connected to the first clamping block 111, the second clamping block 113, and the pushing block 115, and are fixed to the bottom of the core placement seat 117. A plurality of threaded holes (not shown in the figure) are provided at the bottom of the core placement seat 117. The first propulsion cylinder 112, the second propulsion cylinder 114, and the third propulsion cylinder 116 are fixed to the bottom of the core placement seat 117 by screws passing through the threaded holes. The first clamping block 111, the pushing block 115, and the second clamping block 113 are fixed to the telescopic ends of the first propulsion cylinder 112, the second propulsion cylinder 114, and the third propulsion cylinder 116 by screws passing through the threaded holes (not shown in the figure) provided in the first propulsion cylinder 112, the second propulsion cylinder 114, and the third propulsion cylinder 116. The first propulsion cylinder 112, the second propulsion cylinder 114, and the third propulsion cylinder 116 control the forward and backward movement of the first clamping block 111, the pushing block 115, and the second clamping block 113 through the telescopic movement of the cylinders, so as to perform jaw positioning on the parallel cores.

[0038] When the parallel cores are placed on the core placement seat 117, the first propulsion cylinder 112, the second propulsion cylinder 114, and the third propulsion cylinder 116 respectively push the first clamping block 111, the second clamping block 113, and the pushing block 115, and the parallel cores are fixed to the core placement seat 117 under the action of the first clamping block 111, the second clamping block 113, and the pushing block 115.

[0039] The rotating assembly 120 includes a support rod 121, a motor connecting shaft 122, and a rotating shaft 123. The bottom of the support rod 121 is a rectangular seat provided with threaded holes (not marked in the figure), and the top is provided with a round hole. The round hole is the same as the round hole on the connecting rod of the core placement seat 117. The round holes on the connecting rods on both sides of the core placement seat 117 in the x-axis direction are respectively connected to the round holes of the two support rods 121 through the motor connecting shaft 122 and the rotating shaft 123. The motor connecting shaft 122 is fixedly connected to the round hole of the core placement seat 117 and is movably connected to the round hole of the support rod 121. The rotating shaft 123 is fixedly connected to the round hole of the core placement seat 117 and is movably connected to the round hole of the support rod 121. One end of the motor connecting shaft 122 is connected to a motor, and the motor drives the core placement seat 117 to rotate around the motor connecting shaft 122 and the rotating shaft 123 towards the top cover positioning mechanism 300.

[0040] The core combining rotating mechanism 100 drives the core placement seat 117 to rotate around the axis through the motor connecting the motor connecting shaft 122 of the rotating assembly for core combining, and the rotation angle is 90°.

[0041] As Figures 1-4As shown, the tab morphology adjustment mechanism 200 includes two sets of single-side adjustment components 210. The two sets of single-side adjustment components 210 of the tab morphology adjustment mechanism 200 are arranged on the left and right sides of the top cover positioning mechanism 300 along the x-axis. The two sets of single-side adjustment components 210 are arranged on the left and right sides of the top cover positioning mechanism 300 along the x-axis. By fixing the tabs with the two sets of single-side adjustment components 210, it is possible to prevent the tabs from bifurcating and folding inward during tab core combination.

[0042] The single-side adjustment component 210 includes a slider 211, a support seat 212, a first cylinder 213, a second cylinder 214, a first clamping pin 215 and a second clamping pin 216. Rectangular seats (not shown in the figure) are provided at both ends of the support seat 212. The top rectangular seat is fixed along the y-axis, and the bottom rectangular seat is fixed along the x-axis. Therefore, the rectangular seats at both ends are perpendicular to each other. The bottom of the bottom rectangular seat of the support seat 212 is connected to the slider 211, and the bottom rectangular seat of the support seat 212 is fixed to the slider 211 by screws. The first cylinder 213 and the second cylinder 214 are respectively fixed on both sides of the top of the top rectangular seat of the support seat 212. The first cylinder 213 and the second cylinder 214 are fixed to the top of the top rectangular seat of the support seat 212 by screws. The telescopic ends of the first cylinder 213 and the second cylinder 214 are placed opposite to each other. One end of the first clamping pin 215 and the second clamping pin 216 are respectively fixed to one side of the telescopic ends of the first cylinder 213 and the second cylinder 214 by screws. The relative movement of the first clamping pin 215 and the second clamping pin 216 along the y-axis is controlled by the telescopic movement of the two cylinders. The surfaces of the first clamping pin 215 and the second clamping pin 216 are smooth, and the tabs are not damaged during movement. The first cylinder 213 and the second cylinder 214 are respectively provided with limit screws (not shown in the figure), and the opening strokes of the first clamping pin 215 and the second clamping pin 216 are controlled by the limit screws to avoid damaging the tabs due to excessive stroke. The opening strokes of the first clamping pin 215 and the second clamping pin 216 are generally close to the width dimension of the top cover.

[0043] When the parallel wound core is placed on the core placement seat 117, the left and right two clamping pins of the tab morphology adjustment mechanism 200 open or contract through the telescopic movement of the two cylinders in the opposite direction along the y-axis. When the two clamping pins open, they contact the root of the tab and press the tab to prevent the tab from bifurcating and folding inward during tab core combination.

[0044] As Figure 5As shown, the top cover positioning mechanism 300 includes a positioning plate 310, a connecting rod 320, an adapter plate 330, a cylinder 340, a fixing plate 350 and a limiting screw 360 from top to bottom. Two profiling grooves 311 are provided on the top of the positioning plate 310. The profiling grooves 311 have a top cover positioning function. Threaded holes (not shown) are provided at the bottom of the profiling grooves 311. The profiling grooves 311 are provided on both sides of the positioning plate 310. Two connecting rods 320 are fixed to the bottom of the positioning plate 310 through the threaded holes of the positioning plate 310. Threaded holes (not shown) are provided at two corners of one side of the adapter plate 330. The connecting rod 320 is fixed to the top of the adapter plate 330 through the threaded holes of the adapter plate 330. The positioning plate 310 and the adapter plate 330 are connected. The adapter plate 330 is fixedly connected by two connecting rods 320, the length of the connecting rods 320 is fixed and cannot be extended, the cylinder 340 is fixed to the side of the fixing plate 350 by screws, and is fixed to the upper part of the fixing plate 350, the other side of the adapter plate 330 is provided with two round holes (not shown in the figure), the two telescopic rods of the cylinder 340 pass through the round holes of the adapter plate 330 and are fixed with nuts, the cylinder 340 can move up and down by telescoping, and the top of the fixing plate 350 is provided with a limit screw 360 for limiting the distance of the positioning plate 310 moving up and down. The length of the limit screw 360 is adjustable, and the length of the limit screw 360 is 4-5mm.

[0045] The top cover positioning mechanism 300 positions the top cover through the positioning plate 310 to prevent the top cover from being placed in an offset position and affecting the core closing. The limiting screw 360 limits the maximum distance that the positioning plate 310 moves downward under the drive of the cylinder 340. The positioning plate 310 moves downward under the action of the cylinder 340 to release space for the tab to bend.

[0046] The limit screw 360 is used to limit the maximum distance that the positioning plate 310 can move downward when driven by the cylinder 340. The positive and negative pole ears of the parallel winding core will bend when the core is closed. The bending process will exert a thrust on the top cover. If the top cover is fixed on the positioning plate 310, the thrust will be reversely applied to the positive and negative pole ears of the parallel winding core itself, which will make it easier for the ears to fold inward. Therefore, when the core is closed, the bending force of the ears is applied to the positioning plate 310, and the positioning plate 310 moves downward under the action of the cylinder to release space for the ears to bend. The limiting distance should not be too large. If it is too large, the positioning function of the top cover will be lost, and the top cover will be easily skewed after the core is closed; if it is too small, it will easily cause the ears to fold inward under force. Therefore, the length of the limit screw 360 is 4-5mm.

[0047] like Figure 4As shown in the figure, the fixing table 400 is provided with two guide rail blocks 410 and a plurality of threaded holes 420. The guide rail blocks 410 are fixed on both sides of the tabletop of the fixing table 400 by screws. Two sets of single-side adjustment components 210 of the tab morphology adjustment mechanism 200 are oppositely arranged on both sides of the fixing table 400, which are formed by the adaptation of the sliders 211 of the single-side adjustment components 210 and the guide rail blocks 410. The sliders 211 are fixed on the guide rail blocks 410, and the sliders 211 can slide relatively on the guide rail blocks 410. Therefore, the clamping needles of the two sets of single-side adjustment components 210 can move relatively along the X-axis on the positioning plate 310 of the top cover positioning mechanism 300. After the core combination is completed, two clamping needles on the left and right respectively move away from each other along the X-axis in the opposite direction along the guide rail blocks 410 through the sliders 211 and withdraw from the position of the positioning plate 310.

[0048] When the parallel wound cores are placed on the core placement seat 117, two clamping needles of each of the two sets of single-side adjustment components 210 move towards each other along the x-axis through a pair of sliders 211 to the position above the tabs, and then move in the opposite direction along the y-axis through the connected cylinders to open and contact and press the roots of the tabs to prevent the tabs from bifurcating and folding inwards during the core combination; after the core combination is completed, the two clamping needles of each move in the relative direction along the y-axis through the connected cylinders to contract back to the original position (the original position is generally set to the middle position in the width direction of the top cover), and then move in the reverse direction along the x-axis through a pair of sliders 211 to withdraw from the tab position.

[0049] The core combination rotating mechanism 100 altogether includes four support rods 121. The support rods 121 are fixed in the threaded holes 420 of the fixing table 400 by screws, thereby fixing the core combination rotating mechanism 100 on the fixing table 400. The bottom of the fixing plate 350 of the top cover positioning mechanism 300 is provided with threaded holes (not shown in the figure). The top cover positioning mechanism 300 is fixed on the fixing table 400 by screws passing through the threaded holes 420 of the fixing table 400 and screwing into the threaded holes provided at the bottom of the fixing plate 350.

[0050] As Figure 1 shown in the figure, the positioning plate 310 of the top cover positioning mechanism 300 is in the middle of the core combination rotating mechanism 100 and the tab morphology adjustment mechanism 200. The positioning plate 310 is at the same height as the core placement seat 117 of the core combination rotating mechanism 100. The first clamping needle 215 and the second clamping needle 216 in the tab morphology adjustment mechanism 200 are slightly higher than the positioning plate 310, which is convenient for the first clamping needle 215 and the second clamping needle 216 to fix the tabs.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lithium-ion winding core assembling device, characterized in that, It includes a core combining rotation mechanism (100), an ear morphology adjustment mechanism (200) and a top cover positioning mechanism (300). The core combining rotation mechanism (100) is fixed on both sides of the top cover positioning mechanism (300), and the ear morphology adjustment mechanism (200) is fixed on the other two sides of the top cover positioning mechanism (300).

2. The lithium-ion wound core assembling device according to claim 1, wherein, The core combining rotation mechanism (100) includes two sets of core positioning components (110) and a rotation component (120). The core positioning components (110) are movably connected to the rotation component (120).

3. The lithium-ion core assembling device according to claim 2, wherein The two sets of core positioning components (110) and the rotation component (120) of the core combining rotation mechanism (100) are respectively arranged on both sides of the top cover positioning mechanism (300).

4. The lithium-ion core assembling device according to claim 2, wherein The core positioning component (110) includes a first clamping block (111), a first propulsion cylinder (112), a second clamping block (113), a second propulsion cylinder (114), a pushing block (115), a third propulsion cylinder (116) and a core placing seat (117). The first clamping block (111) and the second clamping block (113) are arranged at opposite sides of the core placing seat (117). The pushing block (115) is arranged on the other side of the core placing seat (117). The first propulsion cylinder (112), the second propulsion cylinder (114) and the third propulsion cylinder (116) are respectively connected to the first clamping block (111), the second clamping block (113) and the pushing block (115), and are fixed at the bottom of the core placing seat (117).

5. The lithium-ion core assembly device according to claim 4, characterized in that, The rotation component (120) includes a support rod (121), a motor connecting shaft (122) and a rotating shaft (123). Circular holes are provided at both ends of the core placing seat (117), and corresponding circular holes are provided at the top of the support rod (121). The support rod (121) is arranged on both sides of the core placing seat (117). The core placing seat (117) is arranged at the top of the two support rods (121) and is connected by the motor connecting shaft (122) and the rotating shaft (123).

6. The lithium-ion core combining device according to claim 1, wherein, The ear morphology adjustment mechanism (200) includes two sets of single-side adjustment components (210). The single-side adjustment component (210) includes a slider (211), a support seat (212), a first cylinder (213), a second cylinder (214), a first clamping needle (215) and a second clamping needle (216). The bottom of the support seat (212) is connected to the slider (211). The first cylinder (213) and the second cylinder (214) are respectively fixed on both sides of the top seat of the support seat (212). The telescopic ends of the first cylinder (213) and the second cylinder (214) are respectively connected to the first clamping needle (215) and the second clamping needle (216).

7. The lithium-ion core combining device according to claim 6, characterized in that, The lithium-ion core combining device further includes a fixed table (400). The fixed table (400) is provided with a guide rail block (410), and the slider (211) is fixed on the guide rail block (410).

8. The lithium-ion core assembly device according to claim 6, characterized in that, The two sets of single-side adjustment components (210) of the ear morphology adjustment mechanism (200) are respectively arranged on both sides of the top cover positioning mechanism (300).

9. The lithium-ion core assembling device according to claim 1, wherein The top cover positioning mechanism (300) comprises a positioning plate (310), a connecting rod (320), an adapter plate (330), a cylinder (340), a fixing plate (350) and a limiting screw (360); the positioning plate (310) is connected to the adapter plate (330) via a connecting rod (320); the cylinder (340) is fixed on the fixing plate (350); the telescopic end of the cylinder (340) is connected to the adapter plate (330); the fixing plate (350) is provided with a limiting screw (360) at the top and a threaded hole at the bottom.

10. The lithium-ion winding core assembling device according to claim 9, wherein, The positioning plate (310) is provided with a contoured groove (311), and the length of the limiting screw (360) is 4-5 mm.

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