Detection device for square lithium battery before ultrasonic welding

Abstract

According to the technical scheme, the detection device is characterized in that the detection device comprises a bottom plate and a support arranged on the bottom plate, the top of the support is provided with a guide rail, a sliding rail air cylinder is installed in the guide rail, a sliding table of the sliding rail air cylinder is connected into the guide rail in a sliding mode, and the sliding table is connected with a bearing table of an L-shaped structure; the bearing table is connected with a detection camera through a fixing assembly; compared with the prior art, the welding position adjusting device has the technical effects that the sliding rail air cylinder retracts after photographing is completed, picture information is analyzed through camera software, an analysis result is transmitted to the PLC, and then the welding position of the welding machine is controlled and adjusted through the PLC.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a detection device for square lithium batteries before ultrasonic welding. Background Art

[0002] Lithium batteries are a type of battery with lithium metal or lithium alloy as the positive / negative electrode material and using a non-aqueous electrolyte solution. The lithium metal battery was first proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, M. S. Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high requirements for the environment. With the development of science and technology, lithium batteries have become the mainstream.

[0003] At present, during the production of square lithium batteries, the protection sheet, tab, and connecting sheet need to be ultrasonically welded by an ultrasonic welding device. Usually, the protection sheet is placed in the protection cover groove to achieve the positioning of the protection sheet. However, in the actual production process, the protection sheet will move along with the movement of the reflow fixture in the protection cover groove. The existing technology can only identify whether the protection sheet is missing and cannot monitor the movement of the protection sheet, which may lead to the appearance of an abnormal situation where the protection sheet is skewed after welding, resulting in the scrapping of the battery cell, thus affecting the welding quality and product qualification rate. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a detection device for square lithium batteries before ultrasonic welding, and its advantages are as follows: after taking pictures, the slide rail cylinder retracts, the picture information is analyzed by the camera software, and the analysis result is transmitted to the PLC, and then the welding position of the welding machine is controlled and adjusted through the PLC.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a detection device for square lithium batteries before ultrasonic welding, including a bottom plate and a bracket arranged on the bottom plate. A guide rail is arranged at the top of the bracket, a slide rail cylinder is installed in the guide rail, and the slide of the slide rail cylinder is slidably connected in the guide rail. An "L"-shaped bearing platform is connected to the slide, and a detection camera is connected to the bearing platform through a fixing component.

[0006] Through the above technical solutions, before ultrasonic welding, the detection device is placed in front of the ultrasonic welding device, the detection camera is fixed through the fixing component, the slide rail cylinder is driven, the slide rail cylinder drives the bearing platform to move, and then the bearing platform drives the detection camera to move. The detection camera takes pictures of the protection sheet in the protection cover groove. After taking pictures, the slide rail cylinder retracts, the picture information is analyzed by the camera software, and the analysis result is transmitted to the PLC, and then the welding position of the welding machine is controlled and adjusted through the PLC.

[0007] The present utility model is further configured such that a support diagonal beam is connected between the support and the guide rail.

[0008] The present utility model is further configured such that a plurality of reinforcing ribs are provided inside the support diagonal beam.

[0009] The present utility model is further configured such that the fixing assembly includes a servo motor fixedly connected to the vertical section of the bearing platform, a bidirectional lead screw is coaxially connected to the output end of the servo motor, lead screw sliders are symmetrically and threadedly connected to the bidirectional lead screw, and clamping plates are connected to both of the lead screw sliders.

[0010] The present utility model is further configured such that rubber soft pads are provided on the opposite sides of the two clamping plates, and anti-slip lines are densely distributed on the surfaces of the two rubber soft pads.

[0011] The present utility model is further configured such that a guiding groove is formed in the bearing platform in the height direction, and a guiding block that slides in the guiding groove is connected to the side of the lead screw slider that abuts against the bearing platform.

[0012] In summary, before ultrasonic welding, the detection device is placed in front of the ultrasonic welding equipment, the detection camera is fixed by the fixing assembly, the slide rail cylinder is driven, the slide rail cylinder drives the bearing platform to move, and then the bearing platform drives the detection camera to move. The detection camera takes pictures of the protection sheet in the groove of the protection cover. After the picture taking is completed, the slide rail cylinder retracts, the picture information is analyzed by the camera software, and the analysis result is transmitted to the PLC. Then, the welding position of the welder is controlled and adjusted through the PLC. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall structural schematic diagram of this embodiment;

[0014] Figure 2 is the overall structural schematic diagram of the fixing assembly used in this embodiment.

[0015] Reference numerals: 1, bottom plate; 2, support; 3, support diagonal beam; 4, guide rail; 5, slide rail cylinder; 6, detection camera; 7, bearing platform; 8, servo motor; 9, bidirectional lead screw; 10, lead screw slider; 11, clamping plate; 12, guiding block; 13, guiding groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] Embodiment: Refer to as Figure 1-2As shown, a detection device for square lithium battery before ultrasonic welding comprises a bottom plate 1 and a bracket 2 arranged on the bottom plate 1, a guide rail 4 is arranged on the top of the bracket 2, a slide rail cylinder 5 is installed in the guide rail 4, and a slide table of the slide rail cylinder 5 is slidably connected in the guide rail 4, a bearing table 7 with an "L"-shaped structure is connected to the slide table, a detection camera 6 is connected to the bearing table 7 through a fixing component, a supporting inclined beam 3 is connected between the bracket 2 and the guide rail 4, and a plurality of reinforcing ribs are arranged in the supporting inclined beam 3;

[0018] Specifically, before ultrasonic welding, the detection device is placed in front of the ultrasonic welding equipment, the detection camera 6 is fixed by a fixing component, and the slide rail cylinder 5 is driven. The slide rail cylinder 5 drives the supporting platform 7 to move, and then the supporting platform 7 drives the detection camera 6 to move. The detection camera 6 takes a picture of the protective sheet in the groove of the protective cover. After the picture is taken, the slide rail cylinder 5 retracts, and the image information is analyzed by the camera software, and the analysis result is passed to the PLC, and then the welding position of the welding machine is adjusted through the PLC control, and the supporting inclined beam 3 and the reinforcing rib cooperate with each other to improve the support of the guide rail 4.

[0019] Furthermore, the fixing component includes a servo motor 8 fixedly connected to the vertical section of the supporting platform 7, a bidirectional screw 9 is coaxially connected to the output end of the servo motor 8, a screw slide 10 is symmetrically threaded on the bidirectional screw 9, two screw slides 10 are connected with a clamping plate 11, and rubber pads are provided on the opposite sides of the two clamping plates 11. The surfaces of the two rubber pads are densely covered with anti-slip patterns. When the detection camera 6 needs to be fixed, the detection camera 6 is placed between the two clamping plates 11, and the servo motor 8 is driven to drive the bidirectional screw 9 to rotate, the bidirectional screw 9 drives the two screw slides 10 to move, the screw slide 10 drives the clamping plates 11 to move, and the two clamping plates 11 clamp the detection camera 6, so as to fix the detection camera 6 conveniently and quickly.

[0020] Furthermore, a guide groove 13 is opened in the height direction of the support platform 7, and a guide block 12 sliding in the guide groove 13 is connected to the side of the screw slide 10 that contacts the support platform 7. The guide block 12 drives the screw slide 10 to slide in a directional manner along the guide groove 13, so that the screw slide 10 can drive the splint 11 to move more smoothly.

[0021] Operation steps: Before ultrasonic welding, place the detection device in front of the ultrasonic welding equipment, fix the detection camera 6 through the fixing component, drive the slide rail cylinder 5, the slide rail cylinder 5 drives the carrier table 7 to move, and then the carrier table 7 drives the detection camera 6 to move. The detection camera 6 takes pictures of the protection sheet in the protection cover groove. After taking pictures, the slide rail cylinder 5 retracts. Analyze the picture information through the camera software, transmit the analysis result to the PLC, and then control and adjust the welding position of the welder through the PLC. The support inclined beam 3 and the reinforcing rib cooperate with each other to improve the support of the guide rail 4. When it is necessary to fix the detection camera 6, place the detection camera 6 between two clamping plates 11, drive the servo motor 8 to drive the bidirectional lead screw 9 to rotate, the bidirectional lead screw 9 drives two lead screw sliders 10 to move, the lead screw sliders 10 drive the clamping plates 11 to move, and the two clamping plates 11 clamp the detection camera 6 to fix the detection camera 6 conveniently and quickly. The guide block 12 drives the lead screw slider 10 to slide directionally along the guide groove 13, so that the lead screw slider 10 drives the clamping plate 11 to move more smoothly.

[0022] This specific embodiment is only an interpretation of the present invention, and it is not a limitation to the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions according to needs, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A detection device for square lithium battery before ultrasonic welding, characterized in that: The invention comprises a base plate (1) and a bracket (2) arranged on the base plate (1); a guide rail (4) is arranged on the top of the bracket (2); a slide rail cylinder (5) is installed in the guide rail (4); a slide table of the slide rail cylinder (5) is slidably connected in the guide rail (4); a bearing table (7) in an "L"-shaped structure is connected to the slide table; and a detection camera (6) is connected to the bearing table (7) via a fixing component.

2. A detection device for square lithium battery before ultrasonic welding according to claim 1, characterized in that: A supporting inclined beam (3) is connected between the bracket (2) and the guide rail (4).

3. A detection device for square lithium battery before ultrasonic welding according to claim 2, characterized in that: The supporting inclined beam (3) is provided with a plurality of reinforcing ribs.

4. The detection device for square lithium battery before ultrasonic welding according to claim 1, characterized in that: The fixing assembly comprises a servo motor (8) fixedly connected to a vertical section of the support platform (7); a bidirectional screw rod (9) is coaxially connected to the output end of the servo motor (8); a screw rod slide (10) is symmetrically threadedly connected to the bidirectional screw rod (9); and a clamping plate (11) is connected to both of the screw rod slides (10).

5. The detection device for square lithium battery before ultrasonic welding according to claim 4, characterized in that: The two clamping plates (11) are provided with rubber pads on opposite sides, and the surfaces of the two rubber pads are densely covered with anti-skid patterns.

6. The detection device for square lithium battery before ultrasonic welding according to claim 4, characterized in that: The bearing platform (7) is provided with a guide groove (13) along the height direction, and the side of the screw slide (10) that contacts the bearing platform (7) is connected with a guide block (12) that slides in the guide groove (13).

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