Cylindrical battery top cover welding device

Abstract

The utility model relates to the technical field of battery processing, and discloses a cylindrical battery top cover welding device. The cylindrical battery top cover welding device comprises a clamping unit, an adsorption unit, an ejector pin, a welding unit and a driving unit, the clamping unit and the adsorption unit can be close to each other, the clamping unit is provided with two clamping jaws which are close to or away from each other, and workpieces to be welded comprise a body to be welded and a part to be welded arranged at the top end of the body to be welded; the adsorption unit is provided with an adsorption head; the ejector pin can penetrate through a body to be welded and abut against a part to be welded. The welding unit is provided with a welding module for welding; and the driving unit is in driving connection with the clamping unit, the adsorption unit and the ejector pin. According to the utility model, the welding between the to-be-welded parts and the welding parts can be realized, the welding effect is better, the action of each unit in the welding process is more coordinated, and the working efficiency and the reliability are higher.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, and in particular to a welding device for the top cover of a cylindrical battery. Background Technology

[0002] Cylindrical batteries typically consist of cells, current collectors, and a top cover, which are connected by welding. In existing technologies, the current collector, corresponding to the middle of the cell, lacks support, leading to poor contact between this location and the top cover. This can cause problems such as incomplete or weak welds during subsequent welding, affecting cell performance. Furthermore, existing welding devices use different drive components to operate the various parts, resulting in poor coordination and lower efficiency.

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

[0004] Based on the above, the purpose of this utility model is to provide a cylindrical battery top cover welding device that can realize welding between the parts to be welded and the parts to be welded, with better welding effect. At the same time, the actions of each unit in the welding process are more coordinated, and the work efficiency and reliability are higher.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cylindrical battery top cover welding device, comprising:

[0007] The clamping unit and the adsorption unit are able to approach each other. The clamping unit is provided with two grippers that are close to or far apart from each other. The workpiece to be welded includes a body to be welded and a part to be welded disposed at the top of the body to be welded. The adsorption unit is provided with an adsorption head.

[0008] A push pin can be inserted into the body to be welded and abut against the part to be welded;

[0009] The welding unit is equipped with welding modules for welding.

[0010] The driving unit is driven to be connected to the clamping unit, the adsorption unit and the ejector pin.

[0011] The beneficial effects of this utility model are as follows:

[0012] This invention features a clamping unit for holding the workpiece to be welded when two grippers are close together, and an adsorption unit with an adsorption head for adsorbing the workpiece. The clamping and adsorption units can be brought close together, allowing the workpiece to be pressed onto the workpiece, facilitating subsequent welding. It is worth noting that the workpiece to be welded includes a body and a component; the welding module of the welding unit enables welding between the component and the workpiece. Furthermore, the cylindrical battery top cover welding device also includes a pin that passes through the body and abuts against the workpiece, supporting it and ensuring more reliable contact between them, thus improving the subsequent welding effect and effectively preventing incomplete welds. Simultaneously, the clamping unit, adsorption unit, and pin are all driven by a drive unit, resulting in more coordinated movements and higher efficiency and reliability. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the cylindrical battery top cover welding device provided in a specific embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of a welding sub-device of the cylindrical battery top cover welding device provided in a specific embodiment of this utility model.

[0016] In the picture:

[0017] 1. Workpiece to be welded; 11. Body to be welded; 12. Part to be welded;

[0018] 100. Clamping unit;

[0019] 200. Adsorption unit;

[0020] 300. Threshold pin;

[0021] 400. Drive unit; 410. Drive component; 411. Drive track; 420. Rotating component; 430. Mating component;

[0022] 500, Load-bearing unit; 510, Load-bearing platform; 520, Floating component; 530, Pallet. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0025] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1 and Figure 2As shown, this embodiment provides a cylindrical battery top cover welding device, which includes a clamping unit 100, an adsorption unit 200, a ejector pin 300, a welding unit, and a driving unit 400. The clamping unit 100 and the adsorption unit 200 can approach each other. The clamping unit 100 is provided with two grippers that are close to or far apart from each other. The workpiece 1 to be welded includes a body 11 to be welded and a part 12 to be welded disposed at the top of the body 11 to be welded. The adsorption unit 200 is provided with an adsorption head. The ejector pin 300 can pass through the body 11 to be welded and abut against the part 12 to be welded. The welding unit is provided with a welding module for welding. The driving unit 400 is drivenly connected to the clamping unit 100, the adsorption unit 200, and the ejector pin 300.

[0029] By setting up a clamping unit 100, the workpiece 1 to be welded is clamped when the two grippers approach each other; by setting up an adsorption unit 200 with an adsorption head, the workpiece to be welded is adsorbed; and the clamping unit 100 and the adsorption unit 200 can approach each other, so that the workpiece to be welded can be pressed onto the workpiece 1 to be welded, which facilitates subsequent welding. It is worth noting that the workpiece 1 to be welded includes a body 11 to be welded and a part 12 to be welded, that is, the welding module of the welding unit can realize the welding between the part to be welded and the part 12 to be welded. Furthermore, the cylindrical battery top cover welding device is also provided with a pin 300, which can pass through the body 11 to be welded and abut against the part 12 to be welded, so as to support the part 12 to be welded, making the contact between the part 12 to be welded and the workpiece more reliable, thereby improving the subsequent welding effect and effectively avoiding situations such as incomplete welding. At the same time, the clamping unit 100, the adsorption unit 200 and the pin 300 are all driven by the driving unit 400, so that the actions of each unit are more coordinated, and the working efficiency and reliability are higher.

[0030] Optionally, to press the welded part onto the workpiece 1 to be welded under a preset pressure, the driving unit 400 can drive the clamping unit 100 and / or the adsorption unit 200 to move. It is understood that configuring both the clamping unit 100 and the adsorption unit 200 to be driven by the driving unit 400 results in higher efficiency in their approaching and moving away from each other; configuring only one of the clamping unit 100 and the adsorption unit 200 to be driven by the driving unit 400 simplifies the structure. Therefore, those skilled in the art can configure it according to actual needs, and no specific limitations are made here.

[0031] In this embodiment, the cylindrical battery top cover welding device is further provided with a support unit 500. The support unit 500 includes a support platform 510 for supporting the workpiece 1 to be welded. By providing the support platform 510, the workpiece 1 to be welded can be placed on the support platform 510 for welding. While supporting the workpiece 1 to be welded, it can also bear the pressure of the welded part abutting against the welded part 12, effectively avoiding the clamping problem caused by excessive force on the clamping unit 100 in the vertical direction, and ensuring the reliability of the welding process. It is worth noting that in order to avoid the ejector pin 300, the support platform 510 is provided with an avoidance hole. The ejector pin 300 passes through the avoidance hole and the workpiece 1 to be welded and then abuts against the bottom of the welded part 12. In other embodiments, the support unit 500 may not be provided, and the workpiece 1 to be welded may be directly clamped and welded to the welded part by the clamping unit 100.

[0032] Specifically, the driving unit 400 can drive the two grippers of the clamping unit 100 to move closer to each other, clamping the workpiece 1 to be welded and moving it closer to or away from the support table 510, so as to place the workpiece 1 to be welded within the support table 510; at the same time, the driving unit 400 can drive the adsorption unit 200 to move closer to or away from the support table 510, that is, the approach and pressing between the weldment and the workpiece 1 to be welded are both achieved by the vertical movement of the adsorption unit 200, making the structure simpler. In this case, the support unit 500 can be fixed in the vertical direction to simplify the overall structure of the cylindrical battery top cover welding device and reduce the number of components that the driving unit 400 needs to drive. In other embodiments, the support unit 500 can also be set to move in the vertical direction and driven by an additional driving member 410, thereby improving the efficiency of the approach and movement between the workpiece 1 to be welded and the weldment.

[0033] Furthermore, a tray 530 is provided on the support platform 510, allowing the workpiece 1 to be welded to be placed within the tray 530. The tray 530 further enables the circumferential positioning of the workpiece 1, thereby improving the accuracy of the relative position between the workpiece 1 and the weldment, ensuring subsequent welding precision. It is understood that the height of the tray 530 will not interfere with the welding process between the workpiece 1 and the weldment.

[0034] Preferably, the support unit 500 is further provided with a floating component 520, which can float vertically when the pressure on the support platform 510 is greater than a preset value, so as to reduce the damage to the workpiece 1 to be welded due to excessive pressure. Optionally, the floating component 520 includes an elastic element, which is compressed when floating to move the support platform 510 and the workpiece 1 to be welded away from the adsorption unit 200; when the pressure decreases to the preset value, the elastic element can also restore its deformation, so that the support platform 510 returns to its initial position.

[0035] In this embodiment, the cylindrical battery top cover welding device is further provided with a detection unit. The detection unit is used to detect the relative position of the weldment adsorbed by the adsorption head and the adsorption head of the adsorption unit 200, so as to ensure the accuracy of the weldment adsorption position. And / or, the detection unit is used to detect the relative position of the weldment adsorbed by the adsorption head and the workpiece 1 to be welded, so as to ensure the accuracy of the welding position. Exemplarily, the detection unit is set as a CCD camera, which realizes the detection of the weldment position by taking pictures.

[0036] Specifically, the welding module of the welding unit includes a spot welding module and an edge welding module. The spot welding module is set to the ejector pin 300 and is used to weld the welded part to the middle of the part to be welded 12. The edge welding module is set to the circumferential direction of the welded part and is used to weld the welded part to the circumferential edge of the part to be welded 12.

[0037] Furthermore, the driving unit 400 includes a driving component 410 and a rotating component 420. The driving component 410 is provided with a driving track 411. The clamping unit 100, the adsorption unit 200, and the ejector pin 300 are all disposed on the rotating component 420. It can be understood that the driving component 410 is annular, and the driving track 411 extends circumferentially along the outer wall of the annulus and closes off. The driving track 411 also has a height variation along the vertical direction according to driving requirements. Further, to achieve driving of the clamping unit 100, the adsorption unit 200, and the ejector pin 300, three driving tracks 411 are provided. Optionally, the clamping unit 100, the adsorption unit 200, and the ejector pin 300 are also provided with mating components 430 that can cooperate with the driving track 411. The mating components 430 can be placed within the driving track 411 and roll in cooperation with it, making the change of movement direction smoother. When the rotating component 420 rotates relative to the driving component 410, the mating components 430 are placed in the driving track 411 in a corresponding manner, so that the clamping unit 100, the adsorption unit 200 and the ejector pin 300 can convert the rotational motion of the rotating component 420 into their own required motion according to the vertical height change of the driving track 411, thereby sequentially completing the movement of the welding component, the clamping and vertical movement of the workpiece 1 to be welded, and the welding operation.

[0038] Furthermore, a set of clamping units 100, bearing units 500, adsorption units 200 and ejector pins 300 that correspond one-to-one constitute a welding sub-device. Multiple welding sub-devices are arranged axially on the rotating part 420, which can improve the welding efficiency of cylindrical batteries in one direction, and at the same time help to improve the compactness of the cylindrical battery top cover welding device structure.

[0039] The working process of the cylindrical battery top cover welding device is as follows: the two jaws of the clamping unit 100 clamp the workpiece 1 to be welded and place it on the support platform 510 of the support unit 500; the adsorption unit 200 adsorbs the welding part and presses the welding part onto the workpiece 1 to be welded with a preset pressure; the ejector pin 300 rises and abuts against the welding part 12 of the workpiece 1 to be welded, and the welding unit performs welding.

[0040] Specifically, the cylindrical battery top cover welding device is further provided with a first supply unit for supplying the workpiece 1 to be welded to the clamping unit 100. Exemplarily, the first supply unit is configured as a disc structure, which is rotatably arranged, and has multiple workpieces 1 to be welded arranged circumferentially. After supplying one workpiece 1, the disc structure can rotate to move the next workpiece 1 to a position facing the clamping unit 100, thereby improving supply efficiency. And / or, the cylindrical battery top cover welding device is further provided with a second supply unit for supplying the weldment to the adsorption unit 200. Specifically, the structure of the second supply unit can be referenced to that of the first supply unit, and will not be described again here.

[0041] It is worth noting that the first supply unit of the aforementioned cylindrical battery top cover welding device supplies the workpiece 1 to be welded. In other embodiments, the first supply unit supplies the workpiece 1 to be welded, which is placed in the tray 530. At this time, the supporting unit 500 receives the tray 530 and the workpiece 1 to be welded. Next, the clamping unit 100 clamps the workpiece 1 to be welded and drives it to rise relative to the tray 530, and abut against the welding part of the adsorption unit 200. Then, the ejector pin 300 rises again to abut against the welding part 12, and finally the welding operation is performed. Alternatively, when the first supply unit supplies the workpiece 1 to be welded, which is placed in the tray 530, the clamping unit 100 may not be provided, and the workpiece 1 to be welded and the welding part placed in the tray 530 may be welded directly.

[0042] It is understood that the first supply unit, the second supply unit, and the welding unit are installed relative to the preset positions of the drive component 410 to ensure that the corresponding units of the welding sub-device, when rotated to the preset positions, can perform preset actions and thus achieve preset functions. For example, the workpiece 1 to be welded can be a battery cell module, the body 11 to be welded can be a cylindrical battery cell, the workpiece 1 to be welded can be a current collector, and the welded part is a top cover. In addition, the cylindrical battery top cover welding device is also equipped with a control unit. The drive components 410 and detection components of each functional unit are all communicatively connected to the control unit. The control unit can control the actions of the drive components 410 and detection components of each functional unit according to a preset control program, thereby realizing automated welding operations.

[0043] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A cylindrical battery top cap welding apparatus, characterized by, include: The clamping unit (100) and the adsorption unit (200) are able to approach each other. The clamping unit (100) is provided with two grippers that are close to or far apart from each other. The workpiece (1) to be welded includes a body to be welded (11) and a part to be welded (12) disposed at the top of the body to be welded (11). The adsorption unit (200) is provided with an adsorption head. A push pin (300) can be inserted into the body (11) to be welded and abut against the part (12) to be welded; The welding unit is equipped with welding modules for welding. The driving unit (400) is driven to be connected to the clamping unit (100), the adsorption unit (200) and the ejector pin (300).

2. The cylindrical battery top cover welding device according to claim 1, characterized in that, The cylindrical battery top cover welding device is also provided with a support unit (500), the support unit (500) includes a support platform (510), and the support platform (510) is provided with a clearance hole, and the ejector pin (300) can pass through the clearance hole.

3. The cylindrical battery top cover welding apparatus according to claim 2, wherein The drive unit (400) can drive the two grippers to move closer to each other and along the support platform (510); and the drive unit (400) can drive the adsorption unit (200) to move along the support platform (510).

4. The cylindrical battery top cover welding device according to claim 2, characterized in that, The bearing unit (500) is also provided with a floating component (520), which can float vertically when the pressure on the bearing platform (510) is greater than a preset value.

5. The cylindrical battery top cover welding apparatus of claim 2, wherein A tray (530) is provided on the support platform (510), and the workpiece (1) to be welded can be placed in the tray (530).

6. The cylindrical battery top cover welding apparatus of claim 1, wherein The driving unit (400) can drive the clamping unit (100) and / or the adsorption unit (200) to move closer to each other, so that the weldment adsorbed by the adsorption head is pressed against the workpiece to be welded (1) with a preset pressure.

7. The cylindrical battery top cover welding apparatus of claim 1, wherein The cylindrical battery top cover welding device is further provided with a detection unit, which is used to detect the relative position of the welded part adsorbed by the adsorption head and the adsorption head, and / or, the detection unit is used to detect the relative position of the welded part adsorbed by the adsorption head and the workpiece (1) to be welded.

8. The cylindrical battery top cover welding apparatus of claim 1, wherein, The welding module includes a spot welding module and an edge welding module. The spot welding module is set to correspond to the ejector pin (300), and the edge welding module is set to correspond to the circumferential direction of the welded part.

9. The cylindrical battery top cover welding apparatus according to any one of claims 1 to 8, characterized by, The driving unit (400) includes a driving component (410) and a rotating component (420). The driving component (410) is provided with at least one driving track (411). The clamping unit (100), the adsorption unit (200), and the ejector pin (300) unit are all disposed on the rotating component (420). The rotating component (420) can rotate relative to the driving component (410) so that the driving track (411) corresponds to and drives the clamping unit (100), the adsorption unit (200), and the ejector pin (300) one by one.

10. The cylindrical battery top cover welding apparatus according to any one of claims 1 to 8, characterized by, The cylinder battery top cover welding device is further provided with a first supply unit for supplying the workpiece (1) to be welded to the clamping unit (100); and / or the cylinder battery top cover welding device is further provided with a second supply unit for supplying the welding piece to the adsorption unit (200).

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