Sealing device for cylinder batteries

Abstract

Sealing device for cylinder batteries, characterized in that it comprises the following: a carrier unit (100) which is equipped with a carrier platform; a fastening unit (200) which serves to grip a sealing element and presses the sealing element onto a main body (1) to be sealed with a predetermined pressure; a lifting and rotating unit (300) which is vertically movable to rest against the main body (1) to be sealed and rotates both the main body (1) to be sealed and the sealing element; a welding unit (400) comprising a spot welding module and a continuous welding module; a drive unit (500) which is connected to the mounting unit (200) in a drive-related manner.

Description

Technical field

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

[0002] In the current state of the art, the cover plate and the housing must be welded together after the electrical core has been inserted into the housing. However, current welding equipment typically exhibits the following problems: Inaccurate positioning or insufficient clamping of the cover plate and housing often results in faulty or weak welds, leading to waste products that impair battery performance and cause battery quality issues. Welding the cover plate and housing together in a single step is prone to weld deviations; alternatively, welding at multiple stations with multiple welding machines results in low efficiency and high welding costs.

[0003] Therefore, there is an urgent need for a sealing device for cylinder batteries to solve the above problems. Content of the invention

[0004] Based on the foregoing, the present utility model aims to provide a sealing device for cylinder batteries that achieves excellent welding performance and high yield, while enabling higher welding efficiency and lower costs.

[0005] To achieve the above purpose, the present utility model uses the following technical solution:

[0006] A sealing device for cylinder batteries, comprising the following: a carrier unit equipped with a carrier platform; a fastening unit that serves to grip a sealing element and presses the sealing element onto a main body to be sealed with a predetermined pressure; a lifting and rotating unit that is vertically movable to rest against the main body to be sealed, and rotates both the main body to be sealed and the sealing element; a welding unit comprising a spot welding module and a continuous welding module; a drive unit that is connected to the mounting unit in terms of drive mechanism.

[0007] The present utility model has the following advantageous effects:

[0008] The present utility model is equipped with a carrier unit and a support platform for carrying and positioning the main body to be sealed. A clamping unit is provided to position and grip the sealing element while simultaneously moving in a direction towards the carrier unit to press the sealing element onto the main body to be sealed with a predetermined pressure. This increases the accuracy and reliability of the subsequent welding process and effectively prevents problems such as skewed welds, defective welds, and weak welds. Furthermore, the clamping unit is driven by a drive unit, ensuring more reliable operation. The welding unit is also equipped with a spot welding module for performing spot welds between the sealing element and the main body to be sealed.Spot welding enables the positioning and preliminary connection between the sealing element and the main body to be sealed, thereby improving the accuracy of the subsequent continuous welding. The sealing device for cylindrical batteries includes a lifting and rotating unit designed to work in conjunction with the main body to be sealed along a vertical direction, rotating both the main body and the sealing element. As the main body rotates, the welding unit is further equipped with a continuous welding module to perform a continuous weld between the battery module and the sealing element. This allows the same welding unit to perform both spot welding and continuous welding around the circumference of the sealing element and the main body to be sealed, thus improving welding efficiency and reducing costs. Images

[0009] 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 sealing device for cylinder batteries of a specific embodiment of the present utility model; Fig. Figure 2 shows a partially enlarged schematic representation of A in Fig. 1; Reference symbol list:

[0010] 1. Main body to be sealed; 100. Carrier unit; 110. Carrier table; 120. Holding cup; 200. Fastening unit; 300. Lifting and rotating unit; 310. Lifting drive module; 320. Rotating drive module; 400th welding unit; 500. Drive unit; 510. Drive element; 511. Drive rail; 520. Rotary element; 530. Adapting element; 600. First gripping unit. Description of embodiments

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] The technical solution of the present utility model is explained in more detail below with reference to the attached drawings and specific embodiments.

[0016] As in Fig. 1 and Fig.As shown in Figure 2, the embodiment provides a sealing device for cylindrical batteries, the sealing device for cylindrical batteries comprising a support unit 100, a mounting unit 200, a lifting and rotating unit 300, a welding unit 400 and a drive unit 500, wherein the support unit 100 is provided with a support platform; wherein the mounting unit 200 serves to grip a sealing element and presses the sealing element with a predetermined pressure onto a main body 1 to be sealed; wherein the lifting and rotating unit 300 is vertically movable to bear against the main body 1 to be sealed and rotates both the main body 1 to be sealed and the sealing element; wherein the welding unit 400 comprises a spot welding module and a continuous welding module; wherein the drive unit 500 is drive-connected to the mounting unit 200.

[0017] A support unit 100 with a support platform is provided to support and position the main body 1 to be sealed. A clamping unit 200 is provided to position and grip the sealing element while simultaneously moving in a direction towards the support unit 100 to press the sealing element onto the main body 1 to be sealed with a predetermined pressure. This increases the accuracy and reliability of the subsequent welding process and effectively prevents problems such as skewed welds, defective welds, and weak welds. Furthermore, the clamping unit 200 is driven by a drive unit 500, ensuring more reliable operation. Simultaneously, the welding unit 400 is equipped with a spot welding module to perform spot welds between the sealing element and the main body 1 to be sealed.Spot welding enables the positioning and preliminary connection between the sealing element and the main body 1 to be sealed, thereby improving the accuracy of the subsequent continuous welding. The sealing device for cylindrical batteries comprises a lifting and rotating unit 300, which is designed to work in conjunction with the main body 1 to be sealed along a vertical direction to rotate both the main body 1 and the sealing element. While the main body 1 to be sealed rotates, the welding unit 400 is further equipped with a continuous welding module to perform a continuous weld between the battery module and the sealing element.This allows the same welding unit 400 to perform both spot welding and continuous welding on the circumference of the sealing element and the main body 1 to be sealed, thereby improving welding efficiency and reducing costs.

[0018] In particular, the carrier unit 100 comprises a carrier table 110 and a holding cup 120, which is provided on a support platform of the carrier table 110. The main body 1 to be sealed is provided within the holding cup 120. By using the carrier table 110 and the holding cup 120 to support the main body 1 to be sealed, the reliability of the support of the main body 1 to be sealed is increased, thereby ensuring reliable pressure between the main body to be sealed and the sealing element when the sealing element is pressed onto the main body 1 to be sealed with a predetermined pressure. It is understood that both the carrier table 110 and the holding cup 120 are provided with clearance holes through which the lifting and rotating unit 300 passes, so that the lifting and rotating unit 300 can pass through to rotate the main body 1 to be sealed.

[0019] Furthermore, the sealing device for cylinder batteries comprises a first gripping unit 600, which grips the main body 1 to be sealed and moves in a direction opposite to the carrier unit 100. When the first gripping unit 600 grips the unwelded main body 1 to be sealed and moves in the direction opposite to the carrier unit 100, this facilitates the feeding of the main body 1 to be sealed. When the first gripping unit 600 grips the welded main body 1 to be sealed and moves it in the direction opposite to the carrier unit 100, it separates the main body 1 to be sealed from the holding cup 120, thus facilitating the transfer of the welded main body 1 to be sealed to subsequent processing devices for further processing.The drive unit 500 is connected to the first gripping unit 600 to enable both the gripping of the main body 1 to be sealed by the first gripping unit 600 and the vertical movement of the first gripping unit 600. Using a single drive unit 500 simplifies the structure, improves operational coordination, and enhances compatibility with the fastening unit 200, thus ensuring smoother sealing operations.

[0020] Preferably, the carrier unit 100 is configured to move in the direction towards and away from the first gripping unit 600, thereby improving the separation efficiency between the main body 1 to be sealed and the holding cup 120. At the same time, this arrangement reduces the vertical movement distance of a given unit, thus reducing the vertical dimension of the device. It should be noted that both the carrier unit 100 and the first gripping unit 600 are driven by the drive unit 500. This facilitates coordinated operation between the carrier unit 100, the first gripping unit 600, and the fastening unit 200, thereby improving the welding process on the main body 1 to be sealed and the accuracy of the separation process between the main body 1 to be sealed and the holding cup 120.

[0021] In this embodiment, the retaining cup 120 is provided with a first rolling element on its inner wall. The axis of the first rolling element runs parallel to the axis of the retaining cup 120 and can interact with the outer wall of the main body 1 to be sealed when the lifting and rotating unit 300 rotates the main body 1. This reduces wear on the outer wall of the main body 1 caused by the retaining cup 120 during positioning of the main body 1 and simultaneously enables more uniform rotation of the main body 1.

[0022] For example, the lifting and rotating unit 300 comprises a lifting drive module 310 and a rotating drive module 320, which is provided at the drive end of the lifting drive module 310. When rotation of the main body 1 to be sealed is required, the lifting drive module 310 drives the rotating drive module 320 to move vertically upwards and contact the underside of the main body 1 to be sealed. Subsequently, the drive end of the rotating drive module 320 can drive the main body 1 to be sealed to rotate according to the welding position requirements of the welding unit 400.

[0023] Optionally, the fastening unit 200 is equipped with a fastening block and a gripping module rotatably mounted on the fastening block. The drive unit 500 can move the fastening block vertically, while the gripping module can be driven by a separately provided drive element 510. The rotatable arrangement of the gripping module on the fastening block prevents any mutual interference during the rotation of the rotary drive module 320. It is understood that the gripping position of the gripping module on the sealing element does not impair the welding process of the welding device.

[0024] In other embodiments, the carrier unit 100 is not provided with a carrier table 110 and a holding cup 120. Instead, the carrier unit 100 is provided with a second gripping unit to directly grip the main body 1 to be sealed. In particular, the second gripping unit comprises two gripping jaws that can move towards or away from each other and that grip the main body 1 to be sealed. When the second gripping unit grips the main body 1 to be sealed, it must therefore overcome not only the force of gravity on the main body 1 to be sealed, but also the predetermined pressure with which the sealing element is pressed onto the main body 1 to be sealed during the welding process. To enable the rotation of the main body 1 to be sealed, a second roller element is also provided on the side where the two gripping jaws move towards each other.The axis of the second rolling element runs parallel to the axis of the main body 1 to be sealed. When the lifting and rotating unit 300 rotates the main body 1 to be sealed, the second rolling element works in rolling contact with the outer wall of the main body 1 to be sealed, without having to cancel the gripping action of the main body 1 to be sealed and without hindering the rotation and welding of the main body 1 to be sealed.

[0025] Optionally, the drive unit 500 can be connected to the second gripping unit, so that the drive unit 500 is only required to drive the second gripping unit to grip the main body 1 to be sealed, without the second gripping unit needing to move vertically. At this point, the rotary drive module 320 can also be driven by the drive unit 500 to maximize its utilization. This not only eliminates the lifting drive module 310, simplifying the structure, but also further improves the coordination of movements between the various functional units.

[0026] In this embodiment, the drive unit 500 comprises a drive element 510 and a rotary element 520. A drive rail 511 is provided on the drive element 510, while the mounting unit 200 is provided on the rotary element 520. It is understood that the drive element 510 is designed as a circular ring, with the drive rail 511 extending circumferentially along the outer wall of the ring and forming a closed path. The drive rail 511 is further designed with vertical height changes according to the drive requirements. Furthermore, both the support unit 100 and the first gripping unit 600 are driven by the drive unit 500; consequently, both the support unit 100 and the first gripping unit 600 are also provided on the rotary element 520.This means that three drive rails 511 are provided to drive the carrier unit 100, the first gripping unit 600, and the fastening unit 200. Optionally, each of the carrier unit 100, the first gripping unit 600, and the fastening unit 200 can also be equipped with an adapter element 530 that is adapted to the drive rail 511. The adapter element 530 can be positioned within the drive rail 511 and interact with the drive rail 511 in a rolling manner, thus enabling a smoother change in the direction of movement.When the rotary element 520 rotates relative to the drive element 510, the adjusting elements 530 are positioned accordingly within the drive rail 511. This allows the support unit 100, the first gripping unit 600, and the fastening unit 200 to convert the rotary movement of the rotary element 520 into their respective required movements in accordance with the vertical height change along the drive rail 511. Consequently, the gripping of the sealing element, the pressing, the gripping of the main body 1 to be sealed, the vertical movement, the welding, and the separation of the main body 1 to be sealed are sequentially performed and completed by the support unit 100.

[0027] Furthermore, a sealing sub-device is formed by a group consisting of a carrier unit 100, a first gripping unit 600, a fastening unit 200, and a lifting and rotating unit 300, all corresponding to one another. A multitude of sealing sub-devices are provided axially on the rotating element 520. This configuration increases the sealing efficiency for cylinder batteries while simultaneously improving the compactness of the structure of the sealing device for the top cover of a cylinder battery.

[0028] The sealing device for cylinder batteries operates as follows: The first gripping unit 600 grips the first main body 1 to be sealed and places it on the support table 110. The fastening unit 200 grips the sealing element and presses it onto the main body 1 to be sealed with a predetermined pressure. The lifting and rotating unit 300 is raised to contact the main body 1 to be sealed and rotates it, while the welding unit 400 performs spot welding at several points around the circumference and continuous welding around the circumference in succession. Subsequently, the lifting and rotating unit 300 lowers. The first gripping unit 600 grips the main body 1 to be sealed again. The fastening unit 200 and the first gripping unit 600 raise. The support unit 100 lowers, separating the main body 1 to be sealed from the support table 110.

[0029] In particular, the sealing device for cylinder batteries further comprises a first feeding unit for feeding the main body 1 to be sealed to the carrier unit 100; for example, the first feeding unit is designed as a disk structure, the disk structure being rotatable and provided in the circumferential direction with a plurality of the main bodies 1 to be sealed. After the feeding of one main body 1 to be sealed has been completed, the disk structure rotates to bring the next main body 1 to be sealed into a position facing the carrier unit 100, thereby improving the feeding efficiency. And / or the sealing device for cylinder batteries further comprises a second feeding unit for feeding the sealing element to the mounting 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.

[0030] It is understood that the first feeding unit, the second feeding unit, and the welding unit 400 are installed relative to the preset position of the drive element 510 to ensure that the corresponding unit of the sealing sub-device, rotated into the preset position, can perform the preset action and thereby achieve the preset function. For example, the main body 1 to be sealed can be an electrical core module for a cylinder battery, and the sealing element can be a cover plate for a cylinder battery. Additionally, the sealing device for cylinder batteries includes a control unit. The drive components, detection components, etc., of each functional unit are communicatively connected to the control unit.The control unit can perform automated insertion operations into the housing by controlling the actions of the drive components and detection components across all functional units according to a preset control program.

[0031] 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.

[0032] The present utility model relates to the technical field of battery processing and discloses a sealing device for cylindrical batteries. The sealing device for cylindrical batteries comprises a support unit, a mounting unit, a lifting and rotating unit, a welding unit, and a drive unit, wherein the support unit is provided with a support platform; wherein the mounting unit serves to grip a sealing element and presses the sealing element against a main body to be sealed with a predetermined pressure; wherein the lifting and rotating unit is vertically movable to bear against the main body to be sealed and rotates both the main body to be sealed and the sealing element; wherein the welding unit comprises a spot welding module and a continuous welding module; wherein the drive unit is connected to the mounting unit by means of a drive mechanism.The present utility model achieves excellent welding performance and high yield, while simultaneously enabling higher welding efficiency and lower costs.

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