Cylindrical lithium battery positioning jig

Abstract

The utility model provides a cylindrical lithium battery positioning jig. The cylindrical lithium battery positioning jig comprises a base, a positioning groove and two clamping plates, wherein the positioning groove is formed in the base and used for containing a battery, and the two clamping plates are arranged in the positioning groove in a sliding mode. Rotating plates are arranged on the two opposite faces of the two clamping plates correspondingly, and motors used for driving the rotating plates to rotate are arranged on the clamping plates. And when the two clamping plates are driven to get close to each other, the rotating plates on the two clamping plates can clamp the battery and the tab in the positioning groove. According to the cylindrical lithium battery positioning jig, the clamping plates and the rotating plate are arranged in a matched mode, the two clamping plates can clamp a battery and a pole lug in the welding process of the battery and the pole lug, and the motor can drive the battery and the pole lug to rotate through the rotating plate; the welding machine can complete welding work of the annular welding face between the battery and the electrode lug at a time, the battery does not need to be manually rotated, and therefore the labor intensity of workers is reduced, and the welding work efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production assembly technical field, especially in kind of cylindrical lithium battery positioning fixture. BACKGROUND

[0002] In the production process of cylindrical lithium battery, the battery and the tab at one end of the battery need to be welded, and there is an annular welding surface between the tab and the end of the battery. When the battery and the tab are welded, the battery and the tab are usually arranged in the positioning groove, and the welding machine is used to weld the welding surface between the tab and the battery. However, since part of the welding surface is inside the positioning groove, after welding part of the welding surface, the operator needs to manually rotate the battery so that the welding machine can weld the remaining part of the welding surface. This welding method requires manual operation of the operator, and the welding machine cannot complete the welding of the entire annular welding surface at one time, which has the problems of high labor intensity of personnel and low work efficiency. SUMMARY

[0003] Therefore, the utility model aims at providing a cylindrical lithium battery positioning fixture which can drive the battery to rotate to complete the welding of the battery and the tab, thereby reducing the labor intensity of personnel and improving the work efficiency.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A cylindrical lithium battery positioning fixture comprises a base, a positioning groove for placing a battery arranged on the base, and two clamping plates slidingly arranged in the positioning groove.

[0006] Two opposite surfaces of the two clamping plates are respectively provided with rotating plates, and each clamping plate is provided with a motor for driving the rotating plate to rotate.

[0007] When the two clamping plates are driven to approach each other, the rotating plates on the two clamping plates can clamp the battery and the tab in the positioning groove.

[0008] Further, the bottom of the positioning groove is provided with two sliding grooves, and the bottom of each clamping plate is formed with a sliding block slidingly arranged in the sliding groove; a driving mechanism is arranged in the base below the positioning groove, and the driving mechanism can drive each sliding block to slide in the sliding groove.

[0009] Further, the driving mechanism comprises a gas cylinder formed in the base, two pistons slidingly arranged in the gas cylinder, a piston rod connected to the pistons, and a gas pump communicating with the gas cylinder; the two piston rods are respectively connected to the sliding blocks at both ends of the gas cylinder; the gas pump can inject or extract gas between the two pistons, so that the two pistons move away from or approach each other to drive the sliding blocks to move.

[0010] Further, elastic members are connected between each of the pistons and the end of the cylinder; when the air pump extracts the gas in the cylinder and makes the two pistons close to each other, the elastic members are stretched and stored energy.

[0011] Further, each of the rotating plates is provided with electromagnets for adsorbing the battery and the tab.

[0012] Further, the base is provided with baffles, and the baffles are configured as two on both sides of the width direction of the positioning groove; each of the baffles is arranged to be inclined away from the positioning groove.

[0013] Further, the base is provided with a receiving groove, and the receiving groove is provided with an electric sliding rail; the movable end of the electric sliding rail is connected with the baffle, and the electric sliding rail can drive the baffle to enter or extend out of the receiving groove.

[0014] Further, each of the baffles is provided with a protective pad on the side facing the positioning groove, and the protective pad and the baffle are connected by pressure-sensitive adhesive tape.

[0015] Further, the baffle is provided with a plurality of grooves, the grooves are formed along the length direction of the positioning groove and are distributed along the moving direction of the baffle; and the pressure-sensitive adhesive tape is attached in each of the grooves.

[0016] Further, the base is provided with a plurality of positioning grooves distributed at intervals, and each of the positioning grooves is provided with the baffle on both sides.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The cylindrical lithium battery positioning jig has the following advantages.

[0019] Moreover, the bottom of the positioning groove is provided with two sliding grooves, the sliding blocks are driven to move by a driving mechanism, the sliding blocks can drive the clamping plates to move to clamp the battery and the tab, and the stability of the movement of the clamping plates is improved. The driving mechanism is provided with a gas cylinder, when the gas pump injects gas between the two pistons, the two pistons drive the clamping plates to move away from each other through the piston rods and the sliding blocks, when the gas pump extracts the gas to form negative pressure between the two pistons, the two pistons move close to each other through the piston rods and the sliding blocks, so that the two sliding blocks are effectively driven to move. Elastic elements are connected between the pistons and the end of the gas cylinder, so that the pistons and the clamping plates can be reset in place.

[0020] In addition, the rotating plate is provided with an electromagnet, which can adsorb the battery and the tab, and the fixing effect of the battery and the tab is improved. The base is provided with a baffle, which can block sparks during welding. The base is provided with a receiving groove, and the receiving groove is provided with an electric sliding rail, which can drive the baffle to enter the receiving groove when the battery needs to be placed or taken, so as to provide operation space for the operator, and the baffle can be extended out of the receiving groove to block sparks during welding.

[0021] Furthermore, each baffle is provided with a protective pad on the side facing the positioning groove, so that the replaceable protective pads can contact sparks, preventing the baffles from being ablated and damaged by contact with sparks, and improving the service life of the baffles. The baffle is provided with a plurality of grooves, and a pressure-sensitive adhesive tape is attached in each groove, so that the attachment position and usage amount of the pressure-sensitive adhesive tape can be limited by the grooves, so as to ensure the adhesion effect of the protective pad. The base is provided with a plurality of positioning grooves distributed at intervals, so that a plurality of batteries and tabs can be welded at the same time, improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which form a part of this patent, are included to provide a further understanding of the application and are incorporated herein in their entirety. The embodiments of the application, together with its advantages, can be understood by a study of the following detailed written description taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 The overall structure schematic diagram of the cylindrical lithium battery positioning jig is described in the embodiments of the present application;

[0024] Figure 2 The overall structure schematic diagram of the cylindrical lithium battery positioning jig is described in the embodiments of the present application; Figure 1 The cross-sectional view of the position A-A in the present application is described in the embodiments of the present application;

[0025] Figure 3 The cross-sectional view of the position B-B in the present application is described in the embodiments of the present application; Figure 1 The cross-sectional view of the position B-B in the present application is described in the embodiments of the present application;

[0026] Figure 4 The enlarged view of the position A in the present application is described in the embodiments of the present application; Figure 3

[0027] Explanation of reference signs: ​

[0028] 1, base; 101, positioning groove; 1011, sliding groove; 102, receiving groove; 1021, electric sliding rail; 103, terminal post; 104, controller;

[0029] 2, clamping plate; 201, sliding block;

[0030] 3, rotating plate; 301, motor; 302, electromagnet;

[0031] 4, air cylinder; 401, piston; 402, piston rod; 403, elastic member;

[0032] 5, air pump;

[0033] 6, baffle; 601, pressure-sensitive adhesive strip;

[0034] 7, protective pad. DETAILED DESCRIPTION

[0035] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0036] In the following description, specific details are set forth in order to provide a thorough understanding of the embodiments of the present application. However, persons skilled in the art will understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary details.

[0037] In the description of the present application, it should be noted that if the terms indicating the orientation or position relationship such as "upper", "lower", "inner", "outer" appear, they are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application. The device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second", etc. appear, they are also used for description purposes only and cannot be understood as indicating or implying relative importance.

[0038] In addition, in the description of the present application, unless otherwise explicitly limited, the terms "mounting", "connection", "connection", "connector" should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in conjunction with the specific circumstances.

[0039] The utility model will be explained in detail below with reference to the drawings and in combination with the embodiments.

[0040] This embodiment relates to a cylindrical lithium battery positioning jig for fixing the cylindrical lithium battery and tab during welding the cylindrical lithium battery and tab. Figure 1 Figure 2 As shown in the drawings, the embodiment includes a base 1, a positioning groove 101 for placing the battery provided on the base 1, and two clamping plates 2 slidingly provided in the positioning groove 101. The two clamping plates 2 are respectively provided with rotating plates 3 on the opposite surfaces, and each clamping plate 2 is provided with a motor 301 for driving the rotating plate 3 to rotate. When the two clamping plates 2 are driven to approach each other, the rotating plates 3 on the two clamping plates 2 can clamp the battery and tab in the positioning groove 101. When the rotating plate 3 rotates, the battery and tab can be rotated to expose the annular welding surface outside the positioning groove 101 to be welded by the welding machine.

[0041] As described above, through the cooperation of the clamping plates 2 and the rotating plates 3, the two clamping plates 2 can clamp the battery and tab during the welding process, and the motor 301 can drive the battery and tab to rotate through the rotating plate 3, so that the welding machine can complete the welding work of the annular welding surface between the battery and tab at one time. Compared with the prior art, the battery does not need to be manually rotated, thereby reducing the labor intensity of personnel and improving the work efficiency of welding.

[0042] Based on the above overall introduction, specifically, the bottom of the positioning groove 101 of the embodiment is a positioning surface for receiving the battery, which is a circular arc surface to fit the outer surface of the battery. In order to realize the movement of the two clamping plates 2, the bottom of the positioning groove 101 of the embodiment is provided with two sliding grooves 1011, and the bottom of each clamping plate 2 is formed with a sliding block 201 slidingly provided in the sliding groove 1011. A driving mechanism is provided in the base 1 below the positioning groove 101, which can drive each sliding block 201 to slide in the sliding groove 1011. The driving mechanism drives the sliding block 201 to move, so that the sliding block 201 can drive the clamping plate 2 to move to clamp the battery and tab. At the same time, the clamping plate 2 moves in the sliding groove 1011 through the sliding block 201, which improves the stability of the movement of the clamping plate 2.

[0043] ​Specifically, the driving mechanism of the embodiment includes a cylinder 4 formed in the base 1, two pistons 401 slidingly arranged in the cylinder 4, piston rods 402 connecting the pistons 401, and a gas pump 5 communicating with the cylinder 4. The two piston rods 402 are respectively connected with the sliding blocks 201 located at the two ends of the cylinder 4. The gas pump 5 can inject or extract gas between the two pistons 401, so as to drive the sliding blocks 201 to move away from or close to each other. By the arrangement of the cylinder 4, when the gas pump 5 injects gas between the two pistons 401, the two pistons 401 drive the clamping plates 2 to move away from each other through the piston rods 402 and the sliding blocks 201, and when the gas pump 5 extracts gas to form negative pressure between the two pistons 401, the two pistons 401 move close to each other through the piston rods 402 and the sliding blocks 201, thereby effectively driving the two sliding blocks 201 to move. In a specific implementation, the cylinder 4 of the embodiment is communicated with the two gas pumps 5 through pipelines, so as to improve the clamping force of the clamping plates 2.

[0044] In addition, in the embodiment, elastic members 403 are connected between the pistons 401 and the ends of the cylinder 4. When the gas pump 5 extracts gas in the cylinder 4 to drive the two pistons 401 to move close to each other, the elastic members 403 are stretched to store energy. When the gas pump 5 injects gas into the cylinder 4, the pressure difference on both sides of the pistons 401 disappears, and the elastic members 403 can release energy to contract. The gas in the cylinder 4 and the elastic members 403 jointly drive the two pistons 401 to reset, so as to ensure that the pistons 401 and the clamping plates 2 can be reset in place. Meanwhile, when the battery and the tab are not placed in the positioning groove 101, the elastic members 403 can pull the pistons 401, so that the two clamping plates 2 always maintain an open state. In a specific implementation, the elastic members 403 of the embodiment are tension springs.

[0045] In order to improve the fixing effect between the rotating plate 3 and the battery and the tab, each rotating plate 3 of the embodiment is provided with an electromagnet 302 for adsorbing the battery and the tab. The electromagnet 302 can adsorb the battery and the tab, prevent slipping or relative rotation between the battery, the tab and the rotating plate 3 when the rotating plate 3 rotates, thereby improving the fixing effect of the battery and the tab and ensuring the normal welding.

[0046] As a specific implementation form, since sparks are easy to fly outward at the welding surface during welding, the base 1 of the embodiment is provided with baffles 6, and the baffles 6 are arranged as two baffles arranged on both sides of the width direction of the positioning groove 101, so as to block the sparks from flying out of the base 1 and improve safety. Meanwhile, each baffle 6 is arranged to be inclined away from the positioning groove 101, so that the distance between the two baffles 6 gradually increases from bottom to top, and the space between the upper ends of the two baffles 6 is large enough to facilitate the arrangement of a welding machine for welding work.

[0047] In order to facilitate the operator to take or place the battery in the positioning groove 101, the base 1 of the embodiment is provided with a lifting mechanism 7, which is arranged to be capable of lifting the battery in the positioning groove 101 to a height higher than the height of the operator, so as to facilitate the operator to take or place the battery in the positioning groove 101. Figure 1 ,Figure 3 As shown, the base 1 of this embodiment is provided with a receiving groove 102, and an electric slide rail 1021 is provided inside the receiving groove 102. The movable end of the electric slide rail 1021 is connected to a baffle 6, and the electric slide rail 1021 can drive the baffle 6 into or out of the receiving groove 102. Through the arrangement of the receiving groove 102 and the motor 301, when picking up or placing the battery, the electric slide rail 1021 drives the baffle 6 into the receiving groove 102 to provide sufficient operating space for the operator. During the welding process, the electric slide rail 1021 drives the baffle 6 out of the receiving groove 102 to shield the baffle 6 from flying sparks.

[0048] like Figure 4 As shown, in order to improve the service life of the baffles 6, each baffle 6 in this embodiment is provided with a protective pad 7 on the side facing the positioning groove 101, and the protective pad 7 is bonded to the baffle 6 by a pressure-sensitive adhesive strip 601. With the protective pad 7 in place, the protective pad 7 can absorb splashing sparks, and when the protective pad 7 is eroded to a certain extent by sparks, it can be peeled off from the baffle 6 and replaced to prevent the baffles 6 from being eroded by sparks, thereby improving the service life of the baffles 6.

[0049] Specifically, to ensure the adhesion of the protective pad 7, the baffle 6 in this embodiment is provided with multiple grooves. The grooves extend along the length of the positioning groove 101 and are spaced apart along the moving direction of the baffle 6. The pressure-sensitive adhesive strip 601 is attached to each groove. By placing the pressure-sensitive adhesive strip 601 in the groove, the position and amount of the pressure-sensitive adhesive strip 601 can be restricted by the groove, ensuring the adhesion of the protective pad 7, while controlling the amount of pressure-sensitive adhesive strip 601 used each time it is applied, thus avoiding waste.

[0050] Finally, the base 1 of this embodiment is provided with multiple spaced positioning slots 101, and each positioning slot 101 has a baffle 6 on both sides. By setting multiple positioning slots 101 and baffles 6, the cylindrical lithium battery positioning fixture of this embodiment can simultaneously place multiple batteries and tabs, so as to perform welding work on multiple batteries and tabs at the same time, thereby improving work efficiency. In a specific implementation, the base 1 of this embodiment is provided with a terminal block 103 for connecting to an external power source, and a controller 104. The motor 301, air pump 5, electric slide rail 1021, and electromagnet 302 mentioned above are all electrically connected to the controller 104. The controller 104 can control the operation of the motor 301, air pump 5, electric slide rail 1021, and electromagnet 302.

[0051] To sum up, the cylindrical lithium battery positioning jig of the embodiment can clamp the battery and the tab through the two clamping plates 2 during the welding process of the battery and the tab, and the motor 301 can drive the battery and the tab to rotate through the rotating plate 3, so that the welding machine can complete the welding work of the annular welding surface between the battery and the tab at one time, without manually rotating the battery, thereby reducing the labor intensity of personnel and improving the welding work efficiency.

[0052] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1.A positioning jig for cylindrical lithium batteries, comprising: a base; a positioning slot for placing a battery on the base; and two clamping plates slidingly arranged in the positioning slot. Two opposite surfaces of each clamping plate are provided with a rotating plate, and each clamping plate is provided with a motor for driving the rotating plate to rotate. When the two clamping plates are driven to approach each other, the rotating plates on the two clamping plates can clamp the battery and the tab in the positioning slot. 2.The positioning jig for cylindrical lithium batteries according to claim 1, wherein: the bottom of the positioning slot is provided with two sliding grooves, and the bottom of each clamping plate is formed with a sliding block slidingly arranged in the sliding groove. The base below the positioning slot is provided with a driving mechanism, and the driving mechanism can drive each sliding block to slide in the sliding groove. 3.The positioning jig for cylindrical lithium batteries according to claim 2, wherein: the driving mechanism comprises a cylinder formed in the base, two pistons slidingly arranged in the cylinder, a piston rod connected to the pistons, and a gas pump connected to the cylinder. Each piston rod is connected to a sliding block at the two ends of the cylinder. The gas pump can inject or extract gas between the two pistons, so that the two pistons move away from or approach each other to drive the sliding blocks to move. 4.The positioning jig for cylindrical lithium batteries according to claim 3, wherein: each piston is connected to the end of the cylinder through a resilient member. When the gas pump extracts the gas in the cylinder to make the two pistons approach each other, the resilient member is stretched to store energy. 5.The positioning jig for cylindrical lithium batteries according to claim 1, wherein: each rotating plate is provided with an electromagnet for adsorbing the battery and the tab. 6.The positioning jig for cylindrical lithium batteries according to any one of claims 1 to 5, wherein: the base is provided with a baffle, and the baffle is arranged on both sides of the width direction of the positioning slot. Each baffle is inclinedly arranged away from the positioning slot. 7.The positioning jig for cylindrical lithium batteries according to claim 6, wherein: the base is provided with a receiving slot, and the receiving slot is provided with an electric sliding rail. The movable end of the electric sliding rail is connected to the baffle, and the electric sliding rail can drive the baffle to enter or extend out of the receiving slot. 8.The positioning jig for cylindrical lithium batteries according to claim 6, wherein: each baffle is provided with a protective pad on the side facing the positioning slot, and the protective pad and the baffle are connected by a pressure-sensitive adhesive tape. 9.The positioning jig for cylindrical lithium batteries according to claim 8, wherein: the baffle is provided with a plurality of grooves, the grooves are formed along the length direction of the positioning slot and are spaced apart along the moving direction of the baffle. The pressure-sensitive adhesive tape is attached in each groove. 10.The positioning jig for cylindrical lithium batteries according to claim 6, wherein: the base is provided with a plurality of positioning slots spaced apart, and each positioning slot is provided with baffles on both sides. ​ ​ ​ ​ ​ ​ ​ ​ ​

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