Lithium battery cell protection plate welding device

Abstract

The invention relates to the technical field of welding, in particular to a lithium battery cell protection plate welding device which comprises a flow line and a jig flowing along with the flow line. The visual inspection station is used for carrying out visual inspection on the welded protection plate; the bending station is used for bending the tab on the detected protection plate; and the blanking station is used for placing the protective plate after the tab is bent outside the flow line. In the invention, the first guide plate moves towards the center of the seat body to push the second guide plate to move towards the center of the seat body, and at the moment, the second guide plate and the baffle jointly act to fix the protective cover; when the first guide plate moves towards the center of the seat body, the first guide plate pushes the protective cover to enable the protective cover to make contact with the side edge of the protruding block 210, and the protective cover is fixed. And a spring is arranged, so that the lug can be fixed through the convex block 210.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and particularly relates to a welding device for a lithium battery cell protection board. Background Art

[0002] A Chinese patent with the application number 202311384624.3 discloses a welding device for a lithium battery cell protection board, which includes a welding table. An installation seat is connected to the welding table. Welding machines are installed on both sides of the installation seat. The welding ends of the welding machines can move horizontally. A placing and bending mechanism for placing the cell protection board and the battery pack is provided on the installation seat, and the placing and bending mechanism can bend the tabs of the cell protection board; the placing and bending mechanism includes a sliding seat connected to the top of the installation seat, and a moving plate is slidably connected to the sliding seat. After the lithium battery and the cell protection board are placed in the present invention, the flap can be flipped by the movement of the moving plate to bend the tabs of the cell protection board, so that the tabs are close to the side wall of the battery pack. In this way, it is not necessary to manually control the tab bending, and the work of automatically bending the tabs is realized, and the operation is more convenient.

[0003] However, the Chinese patent with the application number 202311384624.3 has a low degree of automation and cannot realize automated production.

[0004] Therefore, it is necessary to provide a new technical solution to overcome the above defects. Summary of the Invention

[0005] The purpose of the present invention is to provide a welding device for a lithium battery cell protection board that can effectively solve the above technical problems.

[0006] To achieve the purpose of the present invention, the following technical solutions are adopted:

[0007] A welding device for a lithium battery cell protection board includes: a flow line, a jig that flows along the flow line. The flow line sequentially passes through: a tab welding station: a laser welding machine welds the tabs on the protection board; a vision inspection station: visually inspects the welded protection board; a bending station: bends the tabs on the inspected protection board; and a blanking station: places the protection board with bent tabs outside the flow line.

[0008] The jig includes: a seat body. A first slideway and a second slideway perpendicular to each other are provided on the seat body. A first slider is slidably installed in the first slideway, and a second slider is slidably installed in the second slideway. A first guide plate is fixedly connected to the first slider, and a second guide plate is fixedly connected to the second slider; the first guide plate and the second guide plate are connected by an inclined guide surface, and the movement of the first guide plate towards the center of the seat body pushes the second guide plate towards the center of the seat body.

[0009] Further: The tab welding station is provided with a tab positioning tooling for positioning the tabs, a tab handling component for transporting the tabs from the tab positioning tooling to the fixture, and a laser welding head for welding the tabs.

[0010] Further: The vision inspection station is provided with a pressing and fixing component for positioning the protection board and a camera for performing vision inspection.

[0011] Further: The bending station is provided with a bending positioning component for clamping and positioning the protection cover, a protection cover handling component for transporting the protection cover to the bending positioning component, and a bending component.

[0012] Further: The blanking station includes a blanking handling component and a blanking positioning tooling.

[0013] Further: The fixture further includes:

[0014] Guide rods fixedly installed on both sides of the base, lateral clamping blocks slidably installed on the guide rods, and springs sleeved on the guide rods; the lateral clamping blocks have a base for clamping and fixing the protection board and a convex block fixedly installed on the base for fixing the tabs.

[0015] Further: The pressing and fixing component includes: a pressing cylinder, a moving plate installed on the piston rod of the pressing cylinder, an elastic member installed on the moving plate, and a pressing plate fixedly installed on the elastic member.

[0016] Further: The bending positioning component includes a fixing plate, a fixing block, and a fixing cylinder fixedly installed on the opposite side of the fixing block, and a pushing block installed on the piston rod of the fixing cylinder; a pushing block for pushing the protection cover out of the fixing plate is slidably provided on the fixing plate.

[0017] Further: The bending component includes a clamping unit for clamping the protection cover extending out of the fixing plate from the upper and lower sides, and a rotating pressing plate for bending the tabs, and a rotating motor connected to the rotating pressing plate to drive its rotation.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The lithium battery cell protection board welding device of the present invention has a high degree of automation.

[0020] 2. For the welding device of the lithium battery cell protection board of the present invention, when the first guiding plate moves towards the center of the seat body to push the second guiding plate to move towards the center of the seat body, at this time, the second guiding plate and the baffle jointly act to fix the protection cover; when the first guiding plate moves towards the center of the seat body, the first guiding plate pushes the protection cover to make it contact with the side of the convex block, thereby fixing the protection cover. A spring is provided to fix the pole ear through the convex block. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, but do not constitute a limitation to the present invention.

[0022] Figure 1 It is a schematic diagram of the welding device for the lithium battery cell protection board of the present invention.

[0023] Figure 2 It is a schematic diagram of the use of the jig of the welding device for the lithium battery cell protection board of the present invention.

[0024] Figure 3 It is a schematic diagram of the principle of the jig of the welding device for the lithium battery cell protection board of the present invention.

[0025] Figure 4 It is a schematic diagram of the pressing and fixing assembly of the welding device for the lithium battery cell protection board of the present invention.

[0026] Figure 5 It is a schematic diagram of the bending positioning assembly and the bending assembly of the welding device for the lithium battery cell protection board of the present invention.

[0027] In the figure: 1, flow line; 2, jig; 21, seat body; 22, first slideway; 23, second slideway; 24, first slider; 25, second slider; 26, first guiding plate; 27, second guiding plate; 28, lateral clamping block; 29, spring; 210, convex block; 3, pole ear welding station; 31, pole ear positioning tooling; 32, pole ear handling component; 33, laser welding head; 4, visual inspection station; 41, pressing and fixing assembly; 42, camera; 411, pressing cylinder; 412, moving plate; 413, elastic member; 414, pressing plate; 5, bending station; 51, bending positioning assembly; 52, protection cover handling component; 53, bending assembly; 511, fixing plate; 512, fixing block; 513, fixing cylinder; 514, pushing block; 515, pushing block; 531, clamping unit; 532, rotating pressing plate; 533, rotating motor; 6, blanking station; 61, blanking handling component; 62, blanking positioning tooling. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "transverse", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0030] As Figures 1 to 5 shown, the welding device for the lithium battery cell protection board of the present invention includes: a flow line 1, and a jig 2 flowing with the flow line 1. The flow line 1 sequentially passes through: an ear welding station 3: a laser welding machine welds the ear on the protection board; a vision inspection station 4: visually inspects the welded protection board; a bending station 5: bends the ear on the inspected protection board; and a blanking station 6: places the protection board with the bent ear outside the flow line 1.

[0031] In the present application, the flow line 1 is a prior art. In a preferred embodiment, the flow line 1 includes: two side plates, between which a rotating roller is rotatably installed, one being a driving roller and the other being a driven roller. A motor is connected to the driving roller, and a belt is sleeved between the driving roller and the driven roller. The jig 2 is placed on the belt, and during the movement of the belt, the jig 2 is driven to move.

[0032] The fixture 2 includes: a base body 21, on which a first slideway 22 and a second slideway 23 perpendicular to each other are provided. A first slider 24 is slidably installed in the first slideway 22, and a second slider 25 is slidably installed in the second slideway 23. A first guide plate 26 is fixedly connected to the first slider 24, and a second guide plate 27 is fixedly connected to the second slider 25; guide rods fixedly installed on both sides of the base body 21, lateral clamping blocks 28 slidably installed on the guide rods, and springs 29 sleeved on the guide rods; the lateral clamping blocks 28 have a base body for clamping and fixing the protection plate, and springs 29 fixedly installed on the base body for fixing the pole ears. The first guide plate 26 and the second guide plate 27 are connected through an inclined guide surface, and when the first guide plate 26 moves towards the center of the base body 21, it pushes the second guide plate 27 to move towards the center of the base body 21.

[0033] Here, it should be supplemented that the first slider 24 is provided with a power source for pushing its movement, such as a pushing cylinder.

[0034] The lower surface of the base body 21 is in contact with the belt, so that the base body 21 can be driven to move by the belt. The first slideway 22 is arranged in the middle of the width direction, the second slideway 23 is arranged in the middle of the length direction, and a baffle is arranged on the opposite side of the second slideway 23; when the first guide plate 26 moves towards the center of the base body 21, it pushes the second guide plate 27 to move towards the center of the base body 21. At this time, the second guide plate 27 and the baffle jointly act to fix the protection cover; when the first guide plate 26 moves towards the center of the base body 21, the first guide plate 26 pushes the protection cover to make it contact with the side of the convex block 210, thereby fixing the protection cover. The spring 29 is provided to fix the pole ears through the convex block 210.

[0035] The pole ear welding station 3 is provided with a pole ear positioning tooling 31 for positioning the pole ears, a pole ear handling assembly 32 for handling the pole ears from the pole ear positioning tooling 31 to the fixture 2, and a laser welding head 33 for welding the pole ears; in actual use, the pole ears are placed on the pole ear positioning tooling 31 manually or by a manipulator. Since the pole ear handling assembly 32 is a common three-axis moving assembly on the market and its material taking is point-to-point, it is necessary to use the pole ear positioning tooling 31 to position the pole ears to facilitate the pole ear handling assembly 32 to handle the pole ears. The pole ear positioning tooling 31 is a common profiling positioning tooling.

[0036] The vision inspection station 4 is provided with a pressing and fixing assembly 41 for positioning the protection plate and a camera 42 for performing vision inspection. The pressing and fixing assembly 41 includes: a pressing cylinder 411, a moving plate 412 installed on the piston rod of the pressing cylinder 411, an elastic member 413 installed on the moving plate 412, and a pressing plate 414 fixedly installed on the elastic member 413.

[0037] The pressing cylinder 411 drives the moving plate 412 to move downward, so that the pressing plate 414 contacts the protective cover. The elastic member 413 plays a role in buffering and pressure reduction. The elastic member 413 can be rubber. The pressing and fixing assembly 41 is mainly used to fix the protective cover to prevent it from shaking, so that the camera 42 is convenient for focusing.

[0038] The bending station 5 is provided with a bending and positioning assembly 51 for clamping and positioning the protective cover, a protective cover handling assembly 52 for transporting the protective cover to the bending and positioning assembly 51, and a bending assembly 53; the bending and positioning assembly 51 includes a fixing plate 511, a fixing block 512, and a fixing cylinder 513 fixedly installed on the opposite side of the fixing block 512. A push block 514 is installed on the piston rod of the fixing cylinder 513; a pushing block 515 for pushing the protective cover out of the fixing plate 511 is slidably arranged on the fixing plate 511; the bending assembly 53 includes a clamping unit 531 for clamping the protective cover protruding from the fixing plate 511 from the upper and lower sides, and a rotating pressing plate 532 for bending the tab. A rotating motor 533 for driving its rotation is connected to the rotating pressing plate 532.

[0039] The protective cover handling assembly 52 transports the protective cover on the jig 2 to the bending and positioning assembly 51, so that the bending and positioning assembly 51 fixes the protective cover, and then the bending assembly 53 bends the tab of the fixed protective cover.

[0040] The bending and positioning assembly 51 is aligned by the push block 514 and the fixing block 512, and then the pushing block 515 pushes the protective cover towards the rotating pressing plate 532. A power cylinder for driving its movement is connected to the pushing block 515. That is to say, a part of the protective cover protrudes from the fixing plate 511, which is convenient for the clamping unit 531 to fix. The clamping unit 531 acts jointly from above and below to position the protective cover.

[0041] In the present invention, the clamping unit 531 is two common cylinders respectively driving two clamping blocks. The two cylinders respectively drive the two clamping blocks to move towards the protective cover, so as to move the protective cover.

[0042] In the present invention, the rotating motor 533 is connected to the rotating pressing plate 532 through a connecting mechanism. In this application, a synchronous belt and synchronous pulleys are used.

[0043] The blanking station 6 includes a blanking handling assembly 61 and a blanking positioning tooling 62. The blanking handling assembly 61 transports the jig 2 to the blanking positioning tooling 62 for convenient use in the next process. In this application, the blanking positioning tooling 62 is only used to determine a fixed position.

[0044] In this application, for the subsequent use of components, the blanking positioning tooling 62 has two stations, one is the blanking station 6, and the other is the transfer station. That is to say, the blanking positioning tooling 62 includes a bracket, and a cylinder is arranged on the bracket. The blanking handling component 61 transports the fixture 2 to the blanking station 6, and then the cylinder pushes the fixture 2 to the transfer station.

[0045] Finally, it should be added that the tab handling component 32, the protective cover handling component 52, and the blanking handling component 61 are made of common moving modules, which are common technologies in the market. For those skilled in the art, they can be designed according to the functions to be achieved by the present invention.

[0046] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. The circuit connections adopt conventional connection methods in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0047] It should be understood that for those of ordinary skill in the art, improvements or changes can be made according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present invention.

Claims

1. A welding device for a lithium battery cell protection board, characterized in that: Including: A flow line (1), and a jig (2) flowing along the flow line (1). The flow line (1) sequentially passes through: An ear welding station (3): A laser welding machine welds the ear to the protection board. A vision inspection station (4): Visually inspects the welded protection board. A bending station (5): Bends the ear on the inspected protection board. And a blanking station (6): Places the protection board with the bent ear outside the flow line (1). The jig (2) includes: A seat body (21), on which a first slideway (22) and a second slideway (23) perpendicular to each other are provided. A first slider (24) is slidably installed in the first slideway (22), and a second slider (25) is slidably installed in the second slideway (23). A first guide plate (26) is fixedly connected to the first slider (24), and a second guide plate (27) is fixedly connected to the second slider (25). The first guide plate (26) and the second guide plate (27) are connected by an inclined guide surface. When the first guide plate (26) moves towards the center of the seat body (21), it pushes the second guide plate (27) to move towards the center of the seat body (21).

2. The lithium battery cell protection board welding device according to claim 1, characterized in that: The ear welding station (3) is provided with an ear positioning tooling (31) for positioning the ear, an ear handling assembly (32) for transporting the ear from the ear positioning tooling (31) to the jig (2), and a laser welding head (33) for welding the ear.

3. The lithium battery cell protection board welding device according to claim 2, characterized in that: The vision inspection station (4) is provided with a pressing and fixing assembly (41) for positioning the protection board, and a camera (42) for performing vision inspection.

4. The lithium battery cell protection board welding device according to claim 3, characterized in that: The bending station (5) is provided with a bending positioning assembly (51) for clamping and positioning the protection cover, a protection cover handling assembly (52) for transporting the protection cover to the bending positioning assembly (51), and a bending assembly (53).

5. The lithium battery cell protection board welding device according to claim 4, characterized in that: The blanking station (6) includes a blanking handling assembly (61) and a blanking positioning tooling (62).

6. The lithium battery cell protection board welding device according to claim 1, characterized in that: The jig (2) further includes: Guide rods fixedly installed on both sides of the seat body (21), lateral clamping blocks (28) slidably installed on the guide rods, and springs (29) sleeved on the guide rods; The lateral clamping blocks (28) have a base for clamping and fixing the protection board, and a convex block (210) for fixing the ear fixedly installed on the base.

7. The welding device for the lithium battery cell protection board according to claim 3, wherein: The pressing and fixing assembly (41) includes: A pressing cylinder (411), a moving plate (412) installed on the piston rod of the pressing cylinder (411), an elastic member (413) installed on the moving plate (412), and a pressing plate (414) fixedly installed on the elastic member (413).

8. The lithium battery cell protection board welding device according to claim 4, characterized in that: The bending positioning assembly (51) includes a fixing plate (511), a fixing block (512), and a fixing cylinder (513) fixedly installed on the opposite side of the fixing block (512). A push block (514) is installed on the piston rod of the fixing cylinder (513); A pushing block (515) for pushing the protection cover out of the fixing plate (511) is slidably provided on the fixing plate (511).

9. The lithium battery cell protection board welding device according to claim 8, characterized in that: The bending assembly (53) includes a clamping unit (531) that clamps the protective cover protruding from the fixing plate (511) from the upper and lower sides, and a rotating pressing plate (532) for bending the tab. A rotating motor (533) for driving the rotation thereof is connected to the rotating pressing plate (532).

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