Welding device for top cover of a cylinder battery

Abstract

Welding device for top cover of a cylinder battery, characterized in that it comprises the following: a gripping unit (100) and an adsorption unit (200) that can move towards each other, wherein the gripping unit (100) is provided with two gripping jaws that can move towards or away from each other; wherein a workpiece (1) to be welded comprises a main body (11) to be welded and an element (12) to be welded, which is provided at an upper end of the main body (11) to be welded; wherein the adsorption unit (200) is provided with an adsorption head; an upper needle (300) which can be passed through the main body (11) to be welded and rests against the element (12) to be welded; a welding unit equipped with a welding module for welding; a drive unit (400) which is connected to the gripping unit (100), the adsorption unit (200) and the upper needle (300) in terms of drive.

Description

Technical field

[0001] The present utility model relates to the processing technical field of battery processing, in particular a welding device for the top cover of a cylindrical battery. Technical background

[0002] In a cylindrical battery, the assembly typically consists of the electrical core, the current collector disk, and the top cover, with the current collector disk requiring welding to the top cover. In current technology, the position of the current collector disk corresponding to the center of the electrical core is not supported, resulting in poor contact between this position and the top cover. This frequently leads to problems such as incorrect weld placement and weak welds during subsequent welding, negatively impacting the cell performance of the electrical core. Furthermore, current welding fixtures use separate drive components for each part, leading to poor coordination and reduced efficiency.

[0003] Therefore, there is an urgent need for a welding device for the top cover of a cylinder battery to solve the above problems. Content of the invention

[0004] Based on the foregoing, the present utility model comprises a welding device for the top cover of a cylinder battery. This welding device enables welding between the workpiece to be welded and the welding element, thereby achieving a better welding effect. Simultaneously, the coordinated operation of the individual units during the welding process increases both operational efficiency and reliability.

[0005] To achieve the above purpose, the present utility model uses the following technical solution: A welding device for the top cover of a cylinder battery, comprising the following: a gripping unit and an adsorption unit that can approach each other, wherein the gripping unit is provided with two gripping jaws that can move towards or away from each other; wherein a workpiece to be welded comprises a main body to be welded and an element to be welded, which is provided at an upper end of the main body to be welded; wherein the adsorption unit is provided with an adsorption head; an upper needle that can be passed through the main body to be welded and rests against the element to be welded; a welding unit equipped with a welding module for welding; a drive unit that is connected to the gripping unit, the adsorption unit and the upper needle.

[0006] The present utility model has the following advantageous effects:

[0007] The present utility model comprises a gripping unit configured to grasp the workpiece to be welded when two gripping jaws move towards each other; an adsorption unit equipped with an adsorption head for adsorption onto the welding element is provided; the gripping unit and the adsorption unit can move towards each other, thereby pressing the welding element onto the workpiece to be welded, thus facilitating subsequent welding. It should be noted that the workpiece to be welded comprises a main body to be welded and an element to be welded, meaning that the welding module of the welding unit can perform the welding between the welding element and the element to be welded. Furthermore, the welding device for cylindrical battery top covers is equipped with a top needle.This upper needle can be guided through the main body to be welded and rest against the workpiece, thus supporting it and ensuring more reliable contact between the workpiece and the welding element. This improves the subsequent welding effect and effectively prevents problems such as defective welds. Simultaneously, the gripping unit, the adsorption unit, and the upper needle are driven by the drive unit. This ensures better coordinated operation between the units, resulting in higher operational efficiency and reliability. Images

[0008] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings, which are to be used in the embodiments of this utility model, are briefly described below. Of course, the accompanying drawings described below are some of the embodiments of this utility model, and other accompanying drawings can be derived by a person with normal technical knowledge without creative effort from the accompanying drawings and the content of the embodiments of this utility model. Fig. Figure 1 shows a schematic representation of a welding device for top covers of a specific embodiment of the present utility model; Fig. Figure 2 shows a schematic representation of a welding sub-device of the welding device for top covers of a specific embodiment of the present utility model. Reference symbol list:

[0009] 1. Workpiece to be welded; 11. Main body to be welded; 12. Element to be welded; 100th gripping unit; 200th adsorption unit; 300. Top needle; 400. Drive unit; 410. Drive element; 411. Drive rail; 420. Rotary element; 430. Adapting element; 500. Carrier unit; 510. Carrier table; 520. Floating assembly; 530. Tray. Description of embodiments

[0010] The embodiments of the present utility model are described in detail below, and examples of these embodiments are illustrated in the accompanying drawings, where the same or similar designations everywhere denote the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model and are not to be understood as limiting the present utility model.

[0011] In the description of this utility model, it should be understood that the terms, e.g., "center," "top," "bottom," "left," "right," "vertical," "horizontal," "inside," "outside," which indicate the orientation or positional relationship, are based on the orientation or positional relationship shown in the attached drawings, serve only for the sake of simplicity and to simplify the description of this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation or be designed and operated with a specific orientation, and are therefore not to be understood as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying a relative meaning.The terms "first position" and "second position" refer to two different positions.

[0012] In the description of this application, it should be noted that the terms, e.g., "mounted," "connected," "fastened," unless expressly stated otherwise and limited, are to be understood broadly, e.g., as either a permanent connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium or a connection within two elements. The specific meaning of the above terms in this utility model is clear to a person competent in the field.

[0013] In the present utility model, "above" or "below" the first feature of the second feature can indicate direct contact between the first and second features. It can also mean that the first and second features are not in direct contact, but are connected by another feature between them, unless expressly provided and limited otherwise. Furthermore, the first feature being "above," "above," or "above" the second feature can mean that the first feature is located directly or obliquely above the second feature, or simply that the first feature is horizontally higher than the second feature. The first feature being "below" or "below" the second feature can mean that the first feature is located directly or obliquely below the second feature, or simply that the first feature is horizontally lower than the second feature.

[0014] The technical solution of the present utility model is explained in more detail below with reference to the attached drawings and specific embodiments.

[0015] As in Fig. 1 and Fig.Figure 2 shows an embodiment providing a welding device for the top cover of a cylindrical battery. The welding device for the top cover of a cylindrical battery comprises a gripping unit 100, an adsorption unit 200, an upper needle 300, a welding unit, and a drive unit 400; wherein the gripping unit 100 and the adsorption unit 200 can move towards each other, the gripping unit 100 being provided with two gripping jaws that can move towards or away from each other; wherein a workpiece 1 to be welded has a main body 11 to be welded and an element 12 to be welded, which is provided at an upper end of the main body 11 to be welded; wherein the adsorption unit 200 is provided with an adsorption head; wherein the upper needle 300 can be passed through the main body 11 to be welded and bears against the element 12 to be welded;wherein the welding unit is equipped with a welding module for welding; wherein the drive unit 400 is connected to the gripping unit 100, the adsorption unit 200 and the upper needle 300 in a drive-like manner.;

[0016] A gripping unit 100 is provided, configured to grip the workpiece 1 to be welded when two gripping jaws move towards each other; an adsorption unit 200, equipped with an adsorption head for adsorption onto the welding element, is provided; the gripping unit 100 and the adsorption unit 200 can move towards each other, thereby pressing the welding element onto the workpiece 1 to be welded, thus facilitating subsequent welding. It should be noted that the workpiece 1 to be welded comprises a main body 11 to be welded and an element 12 to be welded, meaning that the welding module of the welding unit can perform the welding between the main body 11 and the element 12 to be welded. Furthermore, the welding device for cylindrical battery top covers is provided with an upper needle 300.This upper needle 300 can be passed through the main body 11 to be welded and rest against the element 12 to be welded, thereby supporting the element 12 and ensuring more reliable contact between it and the welding element. This improves the subsequent welding effect and effectively prevents problems such as defective welds. Simultaneously, the gripping unit 100, the adsorption unit 200, and the upper needle 300 are driven by the drive unit 400. This ensures better coordinated operation between the units, resulting in higher operational efficiency and reliability.

[0017] Optionally, the drive unit 400 can move the gripping unit 100 and / or the adsorption unit 200 to press the welding element against the workpiece 1 to be welded with a preset pressure. It is understood that both the gripping unit 100 and the adsorption unit 200 can be driven by the drive unit 400, allowing for more efficient approach and separation. Alternatively, either the gripping unit 100 or the adsorption unit 200 can be driven by the drive unit 400, resulting in a simpler structure. Consequently, the person skilled in the art can configure the system according to practical requirements, and no specific restriction is imposed here.

[0018] In this embodiment, the welding device for the top cover of a cylinder battery further comprises a carrier unit 500, wherein the carrier unit 500 includes a support table 510 for supporting the workpiece 1 to be welded. The support table 510 enables the workpiece 1 to be positioned on the support table 510 for welding. While supporting the workpiece 1, it also absorbs the pressure exerted by the welding element on the element 12 to be welded, thereby effectively preventing clamping problems caused by excessive vertical forces on the gripping unit 100 and ensuring a reliable welding process. It should be noted that the support table 510 is provided with a clearance hole to allow the upper needle 300 to pass through. The upper needle 300 passes through the clearance hole and the workpiece 1 to be welded and rests against the underside of the element 12 to be welded.In other embodiments, the carrier unit 500 can be omitted, with the gripping unit 100 directly gripping the workpiece 1 to be welded with the welding element for welding.

[0019] In particular, the drive unit 400 can drive the two gripping jaws of the gripping unit 100 so that they move towards each other, thereby gripping the workpiece 1 to be welded and moving it towards or away from the carrier table 510 to position it on the carrier table 510. Simultaneously, the drive unit 400 can drive the adsorption unit 200 to move towards and away from the carrier table 510. That is, both the approach and the crimping between the welding element and the workpiece 1 to be welded are achieved by the vertical movement of the adsorption unit 200, resulting in a simpler structure.At this stage, the carrier unit 500 can be configured to remain fixed in a vertical direction, thereby simplifying the overall structure of the welding device for the top cover of a cylinder battery and reducing the number of components that need to be driven by the drive unit 400. In other embodiments, the carrier unit 500 can be configured to move in a vertical direction, with the drive being provided by adding a drive element 410. This arrangement improves the efficiency of approaching and moving away from the workpiece 1 to be welded and the welding element.

[0020] Furthermore, a tray 530 is provided on the support table 510, and the workpiece 1 to be welded can be placed in the tray 530. The tray 530 is configured to allow further circumferential positioning of the workpiece 1 to be welded, thereby improving the accuracy of the relative position between the workpiece 1 and the welding element. This ensures precision in subsequent welding operations. It is understood that the height of the tray 530 does not interfere with the welding process between the workpiece 1 and the welding element.

[0021] Preferably, the support unit 500 further comprises a floating assembly 520, wherein the floating assembly 520 can float along a vertical direction when the pressure on the support table 510 exceeds a preset value, thereby reducing damage to the workpiece 1 to be welded caused by excessive pressure. Optionally, the floating assembly 520 includes an elastic element that contracts when floating, thereby moving the support table 510 and the workpiece 1 to be welded away from the adsorption unit 200. When the pressure is reduced to the preset value, the elastic element returns to its original shape and returns the support table 510 to its initial position.

[0022] In this embodiment, the welding device for the top cover of a cylindrical battery further comprises a detection unit. The detection unit serves to detect the relative position between the welding element held by the adsorption head and the adsorption head of the adsorption unit 200 in order to ensure precise positioning of the welding element's adsorption. And / or the detection unit serves to detect the relative position between the welding element held by the adsorption head and the workpiece 1 to be welded in order to ensure precise welding positioning. For example, the detection unit is configured as a CCD camera that detects the position of the welding element by capturing images.

[0023] In particular, the welding module of the welding unit comprises a spot welding module and an edge welding module. The spot welding module is provided according to the upper needle 300 and is configured to perform welding between the welding element and the central region of the element 12 to be welded. The edge welding module is provided according to the welding element in the circumferential direction and is configured to perform welding between the welding element and the circumferential edge of the element 12 to be welded.

[0024] Furthermore, the drive unit 400 comprises a drive element 410 and a rotary element 420. A drive rail 411 is provided on the drive element 410. The gripping unit 100, the adsorption unit 200, and the upper needle 300 are all provided on the rotary element 420. It is understood that the drive element 410 is designed as a circular ring, with the drive rail 411 extending circumferentially along the outer wall of the ring, forming a closed path. The drive rail 411 is further designed with vertical height changes according to the drive requirements. Three drive rails 411 are also provided to drive the gripping unit 100, the adsorption unit 200, and the upper needle 300. Optionally, each of the gripping unit 100, the adsorption unit 200 and the upper needle 300 can also be provided with an adapting element 430, which is adapted to the drive rail 411.The adjusting element 430 can be positioned within the drive rail 411 and interact with the drive rail 411 in a rolling manner, thus enabling a smoother conversion of the direction of movement. When the rotary element 420 rotates relative to the drive element 410, the adjusting elements 430 are positioned accordingly within the drive rail 411. This allows the gripping unit 100, the adsorption unit 200, and the upper needle 300 to convert the rotary motion of the rotary element 420 into their respective required movements in accordance with the vertical height change along the drive rail 411. Consequently, they sequentially perform the movement of the welding element, the gripping and vertical movement of the workpiece 1 to be welded, and the welding process.

[0025] Furthermore, a welding sub-device is formed by a group consisting of a gripping unit 100, a carrier unit 500, an adsorption unit 200, and an upper needle 300, all corresponding to each other. A variety of welding sub-devices are arranged axially on the rotating element 420. This configuration increases the welding efficiency for cylindrical batteries while simultaneously improving the compactness of the welding device structure for the top cover of a cylindrical battery.

[0026] The welding device for the top cover of a cylinder battery functions as follows: The two gripping jaws of the gripping unit 100 grip the workpiece 1 to be welded and position it on the support table 510 of the support unit 500; the adsorption unit 200 adsorbs the welding element and presses it against the workpiece 1 to be welded with a preset pressure; the upper needle 300 is raised to come into contact with the element 12 of the workpiece 1 to be welded, and the welding unit carries out the welding process.

[0027] In particular, the welding device for the top cover of a cylindrical battery further comprises a first feeding unit for feeding the workpiece 1 to be welded to the gripping unit 100; for example, the first feeding unit is designed as a disk structure, the disk structure is rotatable and provided in the circumferential direction with a plurality of the workpieces 1 to be welded. After the feeding of one workpiece 1 to be welded has been completed, the disk structure rotates to bring the next workpiece 1 to be welded into a position facing the gripping unit 100, thereby improving the feeding efficiency. And / or the welding device for the top cover of a cylindrical battery further comprises a second feeding unit for feeding the welding element to the adsorption unit 200. In particular, the structure of the second feeding unit can be configured with reference to the first feeding unit and is not described in detail here.

[0028] It should be noted that the first feeding unit of the welding device for the top cover of a cylinder battery corresponds to the feeding of the workpiece 1 to be welded. In other embodiments, the first feeding unit feeds the workpiece 1 to be welded, which is placed in the tray 530. At this point, the carrier unit 500 picks up the tray 530 and the workpiece 1 to be welded. Subsequently, the gripping unit 100 grasps the workpiece 1 to be welded and drives it upwards relative to the tray 530 until it rests against the welding element of the adsorption unit 200. The upper needle 300 is then raised to rest against the element 12 to be welded, thus completing the welding process.Alternatively, if the first feeding unit places the workpiece 1 to be welded into the tray 530, the gripping unit 100 can be omitted, so that the workpiece 1 to be welded, positioned in the tray 530, can be welded directly with the welding element.

[0029] It is understood that the first feeding unit, the second feeding unit, and the welding unit are installed relative to the preset position of the drive element 410 to ensure that the corresponding unit of the welding sub-device, rotated into the preset position, can perform the preset action and thereby achieve the preset function. For example, the workpiece 1 to be welded can be an electrical core module, the main body 11 to be welded can be a cylindrical electrical core, the workpiece 1 to be welded can be a current collector disk, and the welding element can be a top cover. Additionally, the welding device for the top cover of a cylindrical battery includes a control unit. The drive elements 410 and the detection elements of each functional unit are communicatively connected to the control unit.The control unit can perform automated welding operations of the welding element by controlling the actions of the drive elements 410 and detection elements across all functional units according to a preset control program.

[0030] The foregoing description merely presents preferred embodiments of the present utility model. Experts in this field may, based on the principles of the present utility model, make modifications to the specific embodiments and the scope of application. The content of this description is not to be understood as limiting the scope of the present utility model.

[0031] The present utility model relates to the processing technical field of battery processing and discloses a welding device for the top cover of a cylindrical battery.The welding device for the top cover of a cylindrical battery comprises a gripping unit, an adsorption unit, an upper needle, a welding unit, and a drive unit; wherein the gripping unit and the adsorption unit can move towards each other, the gripping unit being provided with two gripping jaws that can move towards or away from each other; wherein a workpiece to be welded has a main body to be welded and an element to be welded, which is provided at an upper end of the main body to be welded; wherein the adsorption unit is provided with an adsorption head; wherein the upper needle can be passed through the main body to be welded and rests against the element to be welded; wherein the welding unit is provided with a welding module for welding; and wherein the drive unit is connected to the gripping unit, the adsorption unit, and the upper needle by means of a drive mechanism.The present utility model enables welding between the workpiece to be welded and the welding element, thereby achieving a better welding effect. At the same time, the coordinated operation of the individual units during the welding process increases both operational efficiency and reliability.

Claims

[1] Welding device for top cover of a cylinder battery, characterized by that it includes the following: a gripping unit (100) and an adsorption unit (200) that can move towards each other, wherein the gripping unit (100) is provided with two gripping jaws that can move towards or away from each other; wherein a workpiece (1) to be welded comprises a main body (11) to be welded and an element (12) to be welded, which is provided at an upper end of the main body (11) to be welded; wherein the adsorption unit (200) is provided with an adsorption head; an upper needle (300) which can be passed through the main body (11) to be welded and rests against the element (12) to be welded; a welding unit equipped with a welding module for welding; a drive unit (400) which is connected to the gripping unit (100), the adsorption unit (200) and the upper needle (300) in terms of drive. [2] Welding device for top cover of a cylinder battery according to claim 1, characterized by , that the welding device for top cover of a cylinder battery further comprises a carrier unit (500), wherein the carrier unit (500) comprises a carrier table (510), and wherein the carrier table (510) is provided with a deflection hole, wherein the upper needle (300) can be passed through the deflection hole. [3] Welding device for top cover of a cylinder battery according to claim 2, characterized by, that the drive unit (400) can drive the two gripping jaws so that they move towards each other and along a direction facing towards or away from the carrier table (510); and that the drive unit (400) can drive the adsorption unit (200) so that it moves along a direction facing and away from the carrier table (510). [4] Welding device for top cover of a cylinder battery according to claim 2, characterized by , that the carrier unit (500) further comprises a floating assembly (520), wherein the floating assembly (520) can float along a vertical direction when the pressure on the carrier table (510) exceeds a preset value. [5] Welding device for top cover of a cylinder battery according to claim 2, characterized by , that a tray (530) is provided on the support table (510), wherein the workpiece (1) to be welded can be placed in the tray (530). [6] Welding device for top cover of a cylinder battery according to claim 1, characterized by , that the drive unit (400) can drive the gripping unit (100) and / or the adsorption unit (200) so that they move towards each other, thereby pressing a welding element held by the adsorption head against the workpiece (1) to be welded with a preset pressure. [7] Welding device for top cover of a cylinder battery according to claim 1, characterized by , that the welding device for top cover of a cylinder battery further comprises a detection unit, wherein the detection unit serves to detect the relative position between the welding element held by the adsorption head and the adsorption head; and / or wherein the detection unit serves to detect the relative position between the welding element held by the adsorption head and the workpiece (1) to be welded. [8] Welding device for top cover of a cylinder battery according to claim 1, characterized by , that the welding module comprises a spot welding module and an edge welding module, wherein the spot welding module is provided in a circumferential direction according to the upper needle (300) and the edge welding module is provided in a circumferential direction according to the welding element. [9] Welding device for top cover of a cylinder battery according to any one of claims 1 to 8, characterized by, that the drive unit (400) comprises a drive element (410) and a rotary element (420), wherein the drive element (410) is provided with at least one drive rail (411); wherein the gripping unit (100), the adsorption unit (200) and the upper needle (300) are all provided on the rotary element (420), wherein the rotary element (420) is rotatable relative to the drive element (410), so that the drive rail (411) can be driven in concert with the gripping unit (100) and the adsorption unit (200) with the upper needle (300). [10] Welding device for top cover of a cylinder battery according to any one of claims 1 to 8, characterized by, that the welding device for the top cover of a cylinder battery further comprises a first feeding unit which feeds the workpiece (1) to be welded to the gripping unit (100); and / or that the welding device for the top cover of a cylinder battery further comprises a second feeding unit which feeds the welding element to the adsorption unit (200).

Images