Lithium battery pole post assembly fool-proof system

Abstract

The utility model discloses a kind of lithium battery pole assembling foolproof system, including turntable and the assembling mechanism located in the side of turntable, clamp for positioning battery top cover is equipped on turntable, assembling mechanism includes base, transmission assembly is equipped on base, the output end of transmission assembly is equipped with mounting block, mounting block is equipped with positive electrode sucking disc and negative electrode sucking disc, assembling mechanism still includes two for inductive positive pole and negative pole color color sensor;Mounting block is equipped with positive electrode material taking part and negative electrode material taking part, positioning block is equipped below mounting block, positive electrode positioning seat and negative electrode positioning seat are equipped on positioning block, positioning groove is respectively equipped on positive electrode positioning seat and negative electrode positioning seat, two positioning grooves are respectively corresponding to can be combined to accommodate positive pole and negative pole.The utility model prevents misplacing in positive pole and negative pole assembling transfer process by the different color and size of positive pole and negative pole positioning determination, also plays the role of foolproof.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and in particular to a lithium battery terminal assembly error prevention system. Background Technology

[0002] The top cover of a lithium battery requires the assembly of two terminals, a positive terminal and a negative terminal. Because the positive and negative terminals have different functions, they differ in materials and dimensions. Currently, the assembly of terminals is completed by automated equipment. Therefore, if the positive and negative terminals are assembled incorrectly during the terminal assembly and welding process and this is not detected, the final product will be scrapped, resulting in serious cost losses. Therefore, it is crucial to detect whether the positive and negative terminals have been selected incorrectly during the assembly process. Utility Model Content

[0003] The purpose of this invention is to design a lithium battery terminal assembly error prevention system to overcome the shortcomings of the above-mentioned technologies.

[0004] This utility model designs a foolproof assembly system for lithium battery terminals, including a turntable and an assembly mechanism located on the side of the turntable. The turntable is equipped with a clamp for positioning the battery top cover. The assembly mechanism includes a base, on which a transmission assembly is provided. The output end of the transmission assembly is equipped with a mounting block, which moves linearly relative to the turntable via the transmission assembly. The mounting block has two parallel positive and negative suction cups located away from the turntable for picking up the positive and negative terminals. The assembly mechanism also includes two color sensors for sensing the colors of the positive and negative terminals to determine whether the color of the terminal picked up by the positive and negative suction cups is correct. The mounting block has two parallel positive electrode picking parts and a negative electrode picking part near the turntable for secondary picking of positive and negative electrode posts. Below the mounting block is a positioning block with two parallel positive electrode positioning seats and a negative electrode positioning seat for positioning the positive and negative electrodes. The positive electrode positioning seat and the negative electrode positioning seat are respectively arranged corresponding to the positive electrode picking part and the negative electrode picking part. The positive electrode positioning seat and the negative electrode positioning seat are respectively provided with positioning grooves, and the two positioning grooves are respectively able to fit and accommodate the positive electrode post and the negative electrode post.

[0005] Preferably, the transmission assembly includes a column mounted on a base, a first fixing block connected to the column in a lifting manner, a linear motor extending horizontally on the first fixing block, a servo motor on the linear motor, the servo motor driving the linear motor to work, a second fixing block slidably connected to the linear motor, and a cylinder component on the second fixing block. The output end of the cylinder component is connected to a mounting block to cause the mounting block to perform lifting and lowering movements.

[0006] Further optimization involves providing two parallel positive and negative guide plates on the positioning block for arranging the positive and negative electrodes. The tails of the positive and negative guide plates are located on the mounting block to facilitate the positive and negative suction cups to pick up the corresponding electrodes. Two color sensors are respectively located at the tails of the positive and negative guide plates.

[0007] Further optimization includes a base plate fixed to a positioning block for both the positive and negative electrode guide plates. Baffles are provided on both sides of the base plate, and the base plate and the baffles on both sides form a channel for placing the electrode post. The front end of the channel serves as a feed inlet, and the rear end of the channel is provided with a limiting baffle. Two color sensors are respectively set on the limiting baffle.

[0008] Preferably, both the positive electrode feeding section and the negative electrode feeding section include a cylindrical body. An air passage is provided inside the cylindrical body, and a groove is formed at the bottom of the cylindrical body. One end of the air passage extends to the top of the cylindrical body and connects to an external air supply device, while the other end extends to and communicates with the groove as an installation end. An air nozzle is provided at the installation end. Both the positive electrode positioning seat and the negative electrode positioning seat include an installation hole formed on a positioning block. A positioning barrel is provided inside the installation hole. The top and bottom of the positioning barrel are open, and the positioning barrel is located directly below the corresponding cylindrical body. The bottom end of the positioning barrel is fixed to the mounting block by a limiting plate. The top surface of the limiting plate and the inner wall of the positioning barrel form a positioning groove for placing and positioning the electrode post. The bottom inner diameter of the positioning groove of the positive electrode positioning seat and the negative electrode positioning seat matches the dimensions of the corresponding positive electrode post and the negative electrode post, respectively, so that the positive electrode post and the negative electrode post can be accurately positioned in the corresponding positioning groove. A vent is provided in the portion of the limiting plate located inside the positioning barrel.

[0009] Further optimization involves increasing the inner diameter of the positioning groove from the bottom to the top.

[0010] Preferably, the clamp includes a base detachably connected to the surface of the turntable, the base having a horizontal surface for placing the battery top cover, the horizontal surface having at least four mounting seats along the circumference of the battery top cover, each mounting seat having a rotatable guide pin facing the edge of the battery top cover, such that the guide pin guides and positions the battery top cover.

[0011] Further optimization involves using rubber as the material for the guide pin side, or having a rubber layer on the surface of the guide pin.

[0012] The technical advantages of this utility model are as follows: This utility model includes a turntable and an assembly mechanism located on the side of the turntable. The assembly mechanism includes a mounting block that can move up, down, forward, and backward relative to the turntable. One side of the mounting block has a positive electrode suction cup and a negative electrode suction cup arranged in parallel, and the other side of the mounting block has a positive electrode suction part and a negative electrode suction part arranged in parallel. Below the positive electrode suction cup and the negative electrode suction cup, there are guide plates. The two guide plates are used to convey and arrange the positive and negative electrode posts side-by-side. Below the positive and negative electrode suction parts, there are positive electrode positioning seats and negative electrode positioning seats. The positive and negative electrode positioning seats have cylindrical positioning grooves, which are used to position the positive and negative electrode posts, respectively. That is, the positive and negative electrode suction cups pick up the positive and negative electrode posts on the guide plates and transfer them to the corresponding positioning grooves. When the positive and negative electrode suction cups pick up the corresponding electrode posts, the color sensor on the guide plate senses the color of the positive and negative electrode posts to determine whether the correct posts have been picked up. This system uses the different colors of the positive and negative terminals to perform initial positioning of the terminals. The positioning slots of the positive and negative positioning seats are perfectly matched to the positive and negative terminals. Simultaneously, the cylinders of the positive and negative electrode suction parts can be inserted into the positioning slots, and the bottom groove of the cylinder can accommodate the terminal in the positioning slot. In other words, if the terminal is correct, the cylinder can be inserted into the positioning slot to form a position. If the terminal in the positioning slot does not correspond, due to the different outer diameters of the positive and negative terminals, the cylinder cannot be inserted into the positioning slot to form a position. At this time, the system will issue an alarm, thus achieving secondary positioning of the terminal. Finally, the air nozzle inside the cylinder sucks up the terminal and transfers it to the battery top cover on the turntable. Therefore, this invention prevents incorrect placement during the assembly and transfer of positive and negative terminals by judging their different colors and sizes, and also serves as a foolproof method. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the utility model.

[0014] Figure 2 This is a structural diagram of the transmission component in this utility model.

[0015] Figure 3 This is a structural cross-sectional view of the transmission component in this utility model.

[0016] In the diagram: 1. Turntable; 2. Clamp; 21. Base; 22. Horizontal plane; 23. Mounting base; 24. Guide pin; 3. Battery top cover; 4. Base; 5. Transmission assembly; 51. Column; 52. First fixing block; 53. Linear motor; 54. Servo motor; 55. Second fixing block; 56. Cylinder component; 6. Mounting block; 7. Positive electrode suction cup; 8. Negative electrode suction cup; 9. Color sensor; 10. Positive electrode picking section; 11. Negative electrode feeding section; 111, cylinder; 112, air passage; 113, air nozzle; 114, groove; 12, positioning block; 13, positive electrode positioning seat; 14, negative electrode positioning seat; 141, positioning groove; 142, positioning barrel; 143, limiting plate; 144, vent hole; 15, mounting hole; 16, positive electrode guide plate; 17, negative electrode guide plate; 171, bottom plate; 172, baffle; 173, channel; 174, limiting baffle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0018] This utility model includes a turntable 1 and an assembly mechanism located on the side of the turntable 1. The turntable 1 is provided with a clamp 2 for positioning the battery top cover 3. A motor structure is provided at the center of the bottom of the turntable 1 to drive the turntable 1 to rotate. The battery top cover 3 is horizontally positioned on the clamp 2. Each battery top cover 3 is provided with two hole structures for installing the positive terminal and the negative terminal. The positive terminal and the negative terminal are respectively moved into the corresponding hole structures by the assembly mechanism to complete the assembly.

[0019] The assembly mechanism includes a base 4, on which a transmission assembly 5 is mounted. The output end of the transmission assembly 5 has a mounting block 6. The mounting block 6 moves linearly relative to the turntable 1 via the transmission assembly 5. In this embodiment, the transmission assembly 5 includes a column 51 mounted on the base 4. A first fixing block 52 is vertically connected to the column 51. The first fixing block 52 has a through hole through which the column 51 passes, allowing the first fixing block 52 to slide on the column 51. Fasteners are provided on the first fixing block 52, allowing it to be positioned at any height on the column 51. A horizontally extending linear motor 53 is mounted on the first fixing block 52, and a servo motor 54 is mounted on the linear motor 53, driving the linear motor 53. Linear motor 53 operates, and a second fixed block 55 is slidably connected to linear motor 53. The second fixed block 55 reciprocates horizontally along linear motor 53, and its height position can be adjusted via first fixed block 52. A cylinder 56 is provided on the second fixed block 55, and the cylinder 56 moves with the second fixed block 55. The output end of the cylinder 56 is connected to mounting block 6, so that mounting block 6 can perform lifting and lowering actions, ultimately realizing that mounting block 6 can be adjusted in height and distance relative to turntable 1. This part can be regarded as coarse adjustment of the position of mounting block 6. Under the drive of cylinder 56, mounting block 6 can be adjusted in height relative to second fixed block 55. This part can be regarded as fine adjustment of the position of mounting block 6.

[0020] The mounting block 6 has two parallel positive suction cups 7 and negative suction cups 8 located away from the turntable 1. The positive and negative suction cups 7 and 8 are fixed to the mounting block 6. The tops of the positive and negative suction cups 7 and 8 are connected to the gas supply equipment, and their bottoms are each equipped with a negative pressure suction cup. When the mounting block 6 moves downwards, the two negative pressure suction cups simultaneously press down on the positive and negative poles from top to bottom and suck up the positive and negative poles. A positioning block 12 is located below the mounting block 6, and the positioning block 12 has two parallel suction cups for... Positive and negative electrode guide plates 16 and 17 are arranged to hold the positive and negative electrodes. Both the positive and negative electrode guide plates 16 and 17 include a base plate 171 fixed to the positioning block 12. Baffles 172 are provided on both sides of the base plate 171, forming a channel 173 for placing the electrode. The channel 173 of the positive and negative electrode guide plates 16 and 17 respectively accommodates the positive and negative electrodes. Only a single electrode is allowed to pass through the channel 173 at a time. Simultaneously, the positive electrode suction cup 7 and the negative electrode suction cup 8 pick up the parallel positive and negative electrode posts. The front ends of the positive electrode guide plate 16 and the negative electrode guide plate 17, that is, the front end of the channel 173, serve as the feed inlet. The rear ends of the positive electrode guide plate 16 and the negative electrode guide plate 17 are respectively located on the mounting block 6 and directly below the positive electrode suction cup 7 and the negative electrode suction cup 8. A limiting baffle 174 is provided at the rear end of the channel 173. In this embodiment, the limiting baffle 174 has a U-shaped plate structure. The electrode post moves to... The electrode is positioned directly below the negative pressure suction cup by the limit baffle 174. Both limit baffles 174 are equipped with color sensors 9, which detect the color of the electrode located at the limit baffle 174. Since the positive and negative electrodes are different colors, the color sensor determines whether the positive and negative electrodes are confused. If electrodes of different colors appear in the same channel 173, the color sensor 9 triggers an alarm, causing the equipment to stop for correction.

[0021] The mounting block 6 has two parallel positive electrode picking parts 10 and 11 near the turntable 1 for secondary picking of positive and negative electrode posts. Since the positive electrode picking parts 10, 11, 7 and 8 are all mounted on the mounting block 6, they move together with the mounting block 6. The positioning block 12 has two parallel positive electrode positioning seats 13 and 14 for positioning the positive and negative electrodes. The positive electrode positioning seats 13 and 14 are respectively positioned corresponding to the positive electrode picking parts 10 and 11. The positive electrode positioning seats 13 and 14 are located below the positive electrode picking parts 10 and 11, respectively. Both the positive electrode feeding section 10 and the negative electrode feeding section 11 include a cylindrical body 111. The top end of the cylindrical body 111 is connected to the mounting block 6. An axially extending air passage 112 is provided inside the cylindrical body 111. The cylindrical body 111 has a cylindrical structure, and a circular groove 114 is formed at the bottom of the cylindrical body 111. One end of the air passage 112 extends to the top end of the cylindrical body 111 and connects to an external air supply device. The other end extends to the groove 114 and communicates with the groove 114 to serve as a mounting end. An air nozzle 113 is provided at the mounting end. The air nozzle 113 connects to the air passage 112 so that the air nozzle 113 can adsorb the electrode post.

[0022] Both the positive electrode positioning seat 13 and the negative electrode positioning seat 14 include mounting holes 15 formed on the positioning block 12. A positioning barrel 142 is provided inside the mounting hole 15. Both the mounting hole 15 and the positioning barrel 142 are cylindrical. The top and bottom of the positioning barrel 142 are open. The positioning barrel 142 is located directly below the corresponding cylinder 111. The bottom end of the positioning barrel 142 is fixed to the mounting block 6 by a limiting plate 143. The top surface of the limiting plate 143 and the inner wall of the positioning barrel 142 form a positioning groove 141 for placing and positioning the electrode post. The positioning groove 141 is cylindrical. The bottom inner diameter of the positioning groove 141 of the positive electrode positioning seat 13 and the negative electrode positioning seat 14 matches the dimensions of the corresponding positive and negative electrode posts, respectively, so that the positive and negative electrode posts can be accurately placed in the corresponding positioning groove 141 to form a positioning. When the positive electrode suction cup 7 and the negative electrode suction cup 8 move the positive electrode post and the negative electrode post into the positioning groove 141, since the outer diameter of the positive electrode post and the negative electrode post are different, if the negative electrode post is placed in the positioning groove 141 of the positive electrode positioning seat 13, it cannot accurately match the positioning groove 141. Therefore, the positioning groove 141 plays a positioning and error-proof role for the corresponding electrode post, so that the electrode post cannot be placed flat in the positioning groove 141, that is, the bottom of the electrode post cannot be properly attached to the bottom surface of the positioning groove 141, so that the cylinder 111 cannot accurately fall into the corresponding positioning groove 141 for suction. At this time, the system will trigger an alarm, thereby determining that the polarity of the electrode post is incorrect, and playing a secondary positioning role.

[0023] It should be noted that the bottom of the cylinder 111 falls into the positioning groove 141, and the bottom end of the cylinder 111 is inserted into the positioning groove 141. When the cylinder 111 picks up the terminal post, the terminal post is first embedded in the groove 114. The groove 114 plays a positioning role for the terminal post. Then the air nozzle 113 picks up the terminal post, so that when the cylinder 111 picks up the terminal post, the terminal post is in a flat state, which makes it easy to transfer the terminal post to the battery top cover 3, thus playing a foolproof role.

[0024] Furthermore, the limiting plate 143 has a vent hole 144 in the part located inside the positioning barrel 142 to prevent the positive and negative electrode posts from being adsorbed in the positioning groove 141 and not easily picked up by the positive electrode picking part 10 and the negative electrode picking part 11.

[0025] Furthermore, the inner diameter of the positioning groove 141 gradually increases from the bottom to the top, which guides the positive electrode picking part 10 and the negative electrode picking part 11 to place the electrode post into the positioning groove 141 after they are picked up. That is, the larger inner diameter at the top can guide the electrode post and prevent it from getting stuck at the top of the positioning groove 141, while the smaller inner diameter at the bottom can just accommodate the electrode post, so that the electrode post can be placed in the corresponding positioning groove 141. If the inner diameter of the bottom end of the positioning groove 141 does not correspond to the electrode post, the electrode post cannot be placed in the positioning groove 141 properly, and the cylinder 111 of the positive electrode picking part 10 and the negative electrode picking part 11 cannot fall accurately into the corresponding positioning groove 141.

[0026] Furthermore, the clamp 2 includes a seat 21 detachably connected to the surface of the turntable 1. The seat 21 has a horizontal surface 22 for placing the battery top cover 3. The horizontal surface 22 is provided with at least four mounting seats 23 along the circumference of the battery top cover 3. Each mounting seat 23 is provided with a rotatable guide pin 24 facing the edge of the battery top cover 3, so that the guide pin 24 guides and positions the battery top cover 3.

[0027] Furthermore, the guide pin 24 is made of rubber, or the surface of the guide pin 24 is provided with a rubber layer, so that the battery top cover 3 will not be worn when the guide pin 24 contacts the battery top cover 3.

[0028] The workflow is as follows: First, the positive and negative terminals are placed on the positive guide plate 16 and the negative guide plate 17, respectively. In this application, the positive and negative terminals are different in color and outer diameter, resulting in confusion between the positive and negative terminals on the positive guide plate 16 and the negative guide plate 17. The positive and negative guide plates 16 and 17 are elongated, allowing the positive and negative terminals to be arranged sequentially on them. This enables the positive suction cup 7 and the negative suction cup 8 to move linearly along the guide plates and pick up the terminals. The positive suction cup 7 and the negative suction cup 8 pick up the terminals on the positive guide plate 16 and the negative guide plate 17 and transfer them to the positive positioning seat 13 and the negative positioning seat 14. After the positive suction cup 7 and the negative suction cup 8 pick up the terminals, the color sensor 9 on the guide plate detects whether the color of the terminals on the positive suction cup 7 and the negative suction cup 8 is correct. If it is correct, the transfer continues. If the polarity is incorrect, the color sensor 9 triggers an alarm to remind the operator to replace it. Then, the positive electrode suction cup 7 and the negative electrode suction cup 8 transfer the correct positive and negative electrode posts to the positive electrode positioning seat 13 and the negative electrode positioning seat 14. Since the positive electrode positioning seat 13 and the negative electrode positioning seat 14 have positioning grooves 141, the positive and negative electrode posts can be placed flat and neatly in the corresponding positioning grooves 141. If the electrode post cannot be placed in the positioning groove 141, the system will trigger an alarm to remind the operator that the polarity of the electrode post is incorrect. If the unknown sensor does not trigger an alarm, it means that the electrode post is in place in the positioning groove 141. Then, the cylinder 111 of the positive electrode picking part 10 and the negative electrode picking part 11 moves and falls into the corresponding positioning groove 141, picking up the positive and negative electrode posts together and transferring them to the battery top cover 3 on the turntable 1. The positive electrode suction cup 7, the negative electrode suction cup 8, the positive electrode picking part, and the negative electrode picking part all work synchronously.

[0029] In addition, the inner walls of the positioning grooves 141 of the positive electrode positioning seat 13 and the negative electrode positioning seat 14 are precision ground, and the internal dimensions are designed according to the electrode column tolerance, which has the function of preventing the positive and negative electrodes from being installed incorrectly; the inner walls of the cylinders 111 of the positive electrode feeding part 10 and the negative electrode feeding part 11 are also precision ground and formed in conjunction with the positioning grooves 141, and the inner diameter of the grooves 114 of the cylinder 111 is designed according to the electrode column step size.

[0030] The color sensor 9, linear motor 53, servo motor 54, and cylinder 56 in this application are conventional technologies available on the market, and will not be described in detail here.

[0031] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A lithium battery terminal assembly error-proofing system, characterized in that, The device includes a turntable (1) and an assembly mechanism located on the side of the turntable (1). The turntable (1) is provided with a clamp (2) for positioning the battery top cover (3). The assembly mechanism includes a base (4) and a transmission assembly (5) is provided on the base (4). The output end of the transmission assembly (5) is provided with a mounting block (6). The mounting block (6) moves linearly relative to the turntable (1) through the transmission assembly (5). The mounting block (6) has two parallel positive electrode suction cups (7) and negative electrode suction cups (8) for picking up positive and negative electrode posts at a position away from the turntable (1). The assembly mechanism also includes two color sensors (9) for sensing the color of the positive and negative electrode posts to determine whether the color of the electrode posts picked up by the positive electrode suction cup (7) and the negative electrode suction cup (8) is correct. The mounting block (6) has two parallel positive electrode picking parts (10) and negative electrode picking parts (11) near the turntable (1) for secondary picking of positive and negative electrode posts. The mounting block (6) has a positioning block (12) below it. The positioning block (12) has two parallel positive electrode positioning seats (13) and negative electrode positioning seats (14) for positioning the positive and negative electrodes. The positive electrode positioning seats (13) and negative electrode positioning seats (14) are respectively arranged corresponding to the positive electrode picking parts (10) and negative electrode picking parts (11). The positive electrode positioning seats (13) and negative electrode positioning seats (14) are respectively provided with positioning grooves (141). The two positioning grooves (141) are respectively able to fit the positive electrode post and the negative electrode post.

2. The lithium battery terminal assembly error prevention system according to claim 1, characterized in that, The transmission assembly (5) includes a column (51) mounted on a base (4). A first fixing block (52) is vertically connected to the column (51). A linear motor (53) extending horizontally is mounted on the first fixing block (52). A servo motor (54) is mounted on the linear motor (53). The servo motor (54) drives the linear motor (53) to work. A second fixing block (55) is slidably connected to the linear motor (53). A cylinder component (56) is mounted on the second fixing block (55). The output end of the cylinder component (56) is connected to a mounting block (6) so that the mounting block (6) can perform a lifting action.

3. The lithium battery terminal assembly error prevention system according to claim 2, characterized in that, The positioning block (12) is provided with two parallel positive electrode guide plates (16) and negative electrode guide plates (17) for arranging positive and negative electrode posts. The tails of the positive electrode guide plates (16) and negative electrode guide plates (17) are respectively located on the mounting block (6) so that the positive electrode suction cup (7) and negative electrode suction cup (8) can pick up the corresponding electrode posts. Two color sensors (9) are respectively set at the tails of the positive electrode guide plates (16) and negative electrode guide plates (17).

4. The lithium battery terminal assembly error prevention system according to claim 3, characterized in that, Both the positive electrode guide plate (16) and the negative electrode guide plate (17) include a base plate (171) fixed on the positioning block (12). The base plate (171) has baffles (172) on both sides. The base plate (171) and the baffles (172) on both sides form a channel (173) for placing the electrode post. The front end of the channel (173) serves as the feed inlet, and the rear end of the channel (173) is provided with a limiting baffle (174). Two color sensors (9) are respectively set on the limiting baffle (174).

5. The lithium battery terminal assembly error prevention system according to claim 1, characterized in that, Both the positive electrode feeding section (10) and the negative electrode feeding section (11) include a cylindrical body (111). An air passage (112) is provided inside the cylindrical body (111). A groove (114) is formed at the bottom of the cylindrical body (111). One end of the air passage (112) extends to the top of the cylindrical body (111) and connects to an external air supply device. The other end extends to the groove (114) and communicates with it as an installation end. An air nozzle (113) is provided at the installation end. Both the positive electrode positioning seat (13) and the negative electrode positioning seat (14) include mounting holes (15) opened on the positioning block (12). A positioning barrel (142) is provided inside the mounting hole (15). The top of the positioning barrel (142) and... The bottom ends are all open. The positioning barrel (142) is located directly below the corresponding cylinder (111). The bottom end of the positioning barrel (142) is fixed to the mounting block (6) by the limiting plate (143). The top surface of the limiting plate (143) and the inner wall of the positioning barrel (142) form a positioning groove (141) for placing and positioning the pole. The bottom inner diameter of the positioning groove (141) of the positive pole positioning seat (13) and the negative pole positioning seat (14) matches the size of the corresponding positive pole and negative pole, so that the positive pole and the negative pole can be accurately positioned in the corresponding positioning groove (141). The limiting plate (143) has a vent hole (144) in the part located inside the positioning barrel (142).

6. The lithium battery terminal assembly error prevention system according to claim 5, characterized in that, The inner diameter of the positioning groove (141) gradually increases from the bottom to the top.

7. The lithium battery terminal assembly error prevention system according to claim 1, characterized in that, The clamp (2) includes a seat (21) detachably connected to the surface of the turntable (1). The seat (21) has a horizontal surface (22) for placing the battery top cover (3). The horizontal surface (22) has at least four mounting seats (23) along the circumference of the battery top cover (3). Each mounting seat (23) is provided with a rotatable guide pin (24) facing the edge of the battery top cover (3), so that the guide pin (24) guides and positions the battery top cover (3).

8. The lithium battery terminal assembly error prevention system according to claim 7, characterized in that, The guide pin (24) is made of rubber, or the surface of the guide pin (24) is provided with a rubber layer.

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