A carbon-coated foil coating thickness detection device

Abstract

The utility model provides a kind of carbon foil coating thickness detection device, including base, bracket is provided on base, multiple slide columns are slidably arranged on bracket, the bottom end between slide column is equipped with ray thickness gauge by drive mechanism, and drive mechanism is used to drive the horizontal movement of ray thickness gauge;Two slide columns of being located in the same side are fixedly provided with movable seat one between bottom end, the inside of movable seat one is slidably provided with multiple slide platform one, the bottom end between movable seat one is fixedly provided with the movable seat two of symmetrical distribution, the inside of movable seat two is slidably provided with multiple slide platform two.The carbon foil coating thickness detection device of the utility model, by making the horizontal movement of ray thickness gauge around lithium battery, the coating thickness of carbon foil of lithium battery is monitored, and the coating thickness of carbon foil of each position of lithium battery is quickly and efficiently detected.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery processing technology, and specifically relates to a device for detecting the thickness of carbon foil coating. Background Technology

[0002] In the lithium battery production process, the coating thickness detection of carbon foil is a key step to ensure battery performance and quality. The correct coating thickness can directly affect important indicators such as battery energy density, cycle life and safety.

[0003] Existing carbon foil coating thickness detection devices involve placing the lithium battery cell to be tested at a suitable position on a conveyor belt, which then transports the cell. During transport, a X-ray thickness gauge is used to detect the thickness of the carbon foil coating within the cell. This utilizes the principle that X-rays (or beta rays) attenuate as they penetrate a material; the intensity of the rays decreases proportionally to the areal density (mass per unit area) of the material. Since the coating and the substrate have different absorption characteristics for rays, the areal density of the coating can be accurately calculated by measuring the intensity of the penetrating rays. Knowing the coating density allows for the calculation of the thickness (thickness = areal density / density) for detecting the carbon foil coating thickness of the lithium battery cell. However, in practical use, manual adjustment of the battery cell's placement is required for comprehensive testing, a process that is cumbersome, time-consuming, and labor-intensive, placing a significant workload on production personnel. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a carbon foil coating thickness detection device. By moving a X-ray thickness gauge horizontally around the perimeter of a lithium battery cell, the thickness of the carbon foil coating on the lithium battery cell is monitored, enabling rapid and efficient detection of the carbon foil coating thickness at various locations within the lithium battery cell.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a carbon foil coating thickness detection device, including a base, a support on the base, a plurality of sliding columns slidably arranged on the support, a X-ray thickness gauge for measurement fixedly or detachably installed between the bottom ends of the sliding columns, and a driving mechanism connected to the X-ray thickness gauge to drive it to move in a horizontal direction parallel to the surface of the base; a movable seat 1 is fixedly arranged between the bottom ends of two sliding columns on the same side, a plurality of sliding platforms 1 are slidably arranged inside the movable seat 1, a symmetrically distributed movable seat 2 is fixedly arranged between the bottom ends of the movable seat 1, a plurality of sliding platforms 2 are slidably arranged inside the movable seat 2, and the X-ray thickness gauge is fixedly or detachably installed at the bottom ends of the sliding platforms 1 and 2; a plurality of support feet are provided on the lower surface of the base, and a plurality of door panels are rotatably arranged on the front side of the base.

[0006] As a further improvement of this utility model, each movable seat 1 is rotatably equipped with an adjusting screw 1, and each movable seat 2 is rotatably equipped with an adjusting screw 2. Each slide 1 is threadedly connected to the adjacent adjusting screw 1, and each slide 2 is threadedly connected to the adjacent adjusting screw 2. A drive seat is fixedly installed between the two movable seats 1 and between the two movable seats 2. Each drive seat has two rotating rods rotatably installed inside, symmetrically distributed with respect to the vertical center of the drive seat. A bevel gear 1 is fixedly sleeved at the end of each rotating rod. A bevel gear 2 is fixedly sleeved at the end of each adjusting screw 1 and adjusting screw 2 near the bevel gear 1. The bevel gear 2 meshes with the adjacent bevel gear 1 respectively. Each drive seat has a dual-axis motor inside, and the output shaft of each dual-axis motor is fixedly connected to the adjacent adjusting screw 1 through a coupling.

[0007] As a further improvement of this utility model, an electric push rod is provided on the upper surface of the bracket, and a fixing plate is provided at the lower end of the telescopic end of the electric push rod. The fixing plate is connected and fixed between the two movable seats.

[0008] As a further improvement of this utility model, a conveyor seat is provided on the upper surface of the base, and multiple rotating rollers are rotatably arranged inside the conveyor seat. A conveyor belt is provided between the rotating rollers for transmission. A servo motor is provided on the outer side of the conveyor seat, and the output shaft of the servo motor is fixed to the rotating rollers by a coupling.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: Firstly, the threaded relationship between slide one and adjusting screw one causes slide one to slide against movable seat one, and the threaded relationship between slide two and adjusting screw two causes slide two to slide against movable seat two. This causes slide one and slide two to move the X-ray thickness gauge connected to them, so that the X-ray thickness gauge moves horizontally around the lithium battery cell to monitor the thickness of the carbon foil coating on the lithium battery cell.

[0010] Secondly, the operation of the dual-axis motor is controlled so that the output shaft of the dual-axis motor drives the rotating rod connected to it to rotate, which in turn drives the second bevel gear to drive the first or second adjusting screw connected to it to rotate, causing the first and second adjusting screws to rotate synchronously.

[0011] Third, the extension end of the electric push rod drives the fixed plate to move, which in turn causes the fixed plate to move the movable seat two up and down, so that the movable seat two can drive the X-ray thickness gauge to rise or fall, thereby adjusting the height of the X-ray thickness gauge.

[0012] Fourth, the X-ray thickness gauge moves horizontally around the lithium battery to monitor the thickness of the carbon foil coating. The hyperspectral imaging of the X-ray thickness gauge (such as the SPECIM FX system) acquires hyperspectral data of each line on the coating surface through push-broom scanning. By utilizing the differences in reflection / absorption characteristics of coatings of different thicknesses at specific wavelengths (such as peak counting method), and combining the refractive index parameter, the thickness distribution is calculated, thereby enabling rapid and efficient detection of the carbon foil coating thickness at various locations of the lithium battery cell. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal cross-sectional structure of this utility model; Figure 3 This is an enlarged structural diagram of point A in this utility model; Figure 4 This is a schematic diagram of the planar structure of the present invention; Figure 5 This is a schematic diagram of the structure at point B of this utility model.

[0015] In the diagram: 101, base; 102, support leg; 103, bracket; 104, sliding column; 105, conveyor seat; 106, conveyor belt; 107, servo motor; 108, electric push rod; 109, door panel; 201, movable seat one; 202, movable seat two; 203, slide table one; 204, slide table two; 205, X-ray thickness gauge; 206, adjusting screw one; 207, adjusting screw two; 208, drive seat; 209, rotating rod; 210, bevel gear one; 211, bevel gear two; 212, dual-axis motor. Detailed Implementation

[0016] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0017] like Figure 1 , 4As shown, the device includes a base 101, a bracket 103 is provided on the base 101, a plurality of sliding columns 104 are slidably provided on the bracket 103, and a radiographic thickness gauge 205 for measurement is fixedly or detachably installed between the bottom ends of the sliding columns 104, and the driving mechanism is connected to the radiographic thickness gauge 205 to drive it to move in a horizontal direction parallel to the surface of the base 101.

[0018] like Figure 2 , 3 As shown, the driving mechanism includes a movable seat 201 fixedly disposed between the bottom ends of two sliding columns 104 located on the same side. Multiple sliding tables 203 are slidably disposed inside each movable seat 201. Two movable seats 202, symmetrically distributed with respect to the vertical center of the movable seat 201, are fixedly disposed between the bottom ends of the movable seat 201. Multiple sliding tables 204 are slidably disposed inside each movable seat 202. The X-ray thickness gauge 205 is fixedly or detachably mounted on the bottom ends of the sliding tables 203 and 204. Adjusting screws 206 are rotatably disposed inside each movable seat 201, and adjusting screws 207 are rotatably disposed inside each movable seat 202. Each sliding table 203 is threadedly connected to an adjacent adjusting screw 206, and each sliding table 204 is threadedly connected to an adjacent adjusting screw 207. Rod 207 is threaded; a drive seat 208 is fixedly installed between the two movable seats 1 201 and between the two movable seats 202. Each drive seat 208 has two rotating rods 209 rotatably installed inside, symmetrically distributed with respect to the vertical center of the drive seat 208. The ends of the rotating rods 209 are fixedly fitted with bevel gears 1 210. The ends of the adjusting screw 1 206 and the adjusting screw 2 207 near the bevel gears 1 210 are fixedly fitted with bevel gears 211. The bevel gears 211 mesh with the adjacent bevel gears 1 210 respectively. Each drive seat 208 has a dual-axis motor 212 inside. The output shaft of each dual-axis motor 212 is fixedly connected to the adjacent adjusting screw 1 206 through a coupling.

[0019] like Figure 1 , 2 As shown, each of the upper surfaces of the bracket 103 is provided with an electric push rod 108, and the lower end of the telescopic end of the electric push rod 108 is provided with a fixing plate, which is connected and fixed between the two movable seats 202.

[0020] like Figure 1 , 2 As shown, a conveyor seat 105 is provided on the upper surface of the base 101. Multiple rotating rollers are rotatably arranged inside the conveyor seat 105. A conveyor belt 106 is provided between the rotating rollers for transmission. A servo motor 107 is provided on the outer side of the conveyor seat 105. The output shaft of the servo motor 107 is fixed to the rotating rollers by a coupling.

[0021] According to another embodiment of the present invention, such as Figure 1 , 4 As shown, the lower surface of the base 101 is provided with multiple support legs 102, and the front side of the base 101 is rotatably provided with multiple door panels 109.

[0022] In use, the output shaft of the servo motor 107 drives the rotating roller to rotate, which in turn drives the conveyor belt 106 to rotate. The lithium battery to be tested for carbon foil coating thickness is placed on the conveyor belt 106 and transported by the conveyor belt 106. The lithium battery stops when it is transported to the middle of the bracket 103. The telescopic end of the electric push rod 108 drives the fixed plate to move, which in turn causes the fixed plate to move the movable seat 202 up and down, so that the movable seat 202 drives the X-ray thickness gauge 205 to rise or fall, thereby adjusting the height of the X-ray thickness gauge 205. Then, the dual-axis motor 212 is controlled to operate, causing its output shaft to drive the connected rotating rod 209 to rotate. The rotating rod 209 then drives the first bevel gear 210 to rotate. Through the meshing relationship between the first bevel gear 210 and the second bevel gear 211, the second bevel gear 211 rotates, which in turn drives the connected adjusting screw 206 or adjusting screw 207 to rotate. This is achieved through the threaded relationship between the slide table 203 and the adjusting screw 206, and the threaded relationship between the slide table 204 and the adjusting screw 207. The threaded relationship between slides 203 and 201 causes sliding between slide 204 and 202, which in turn causes slides 203 and 204 to move the X-ray thickness gauge 205 connected to them. This causes the X-ray thickness gauge 205 to move horizontally around the lithium battery, monitoring the thickness of the carbon foil coating. The X-ray thickness gauge 205 (usually an IMS7000 / 8000 series) utilizes the principle that X-rays (or beta rays) attenuate when penetrating a material. The attenuation of ray intensity is proportional to the areal density (mass per unit area) of the penetrated material. Since the coating and the substrate have different absorption characteristics for X-rays, the areal density of the coating can be accurately calculated by measuring the intensity of the penetrating rays. Knowing the coating density allows for the calculation of the thickness (thickness = areal density / density), enabling rapid and efficient detection of the carbon foil coating thickness at various locations.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A device for detecting the thickness of carbon foil coating, comprising a base (101), characterized in that: A bracket (103) is provided on the base (101), and a plurality of sliding columns (104) are slidably arranged on the bracket (103). A radiographic thickness gauge (205) for measurement is fixedly or detachably installed between the bottom ends of the sliding columns (104). A drive mechanism is connected to the radiographic thickness gauge (205) to drive it to move in the horizontal direction.

2. The carbon foil coating thickness detection device as described in claim 1, characterized in that: The driving mechanism includes a movable seat 1 (201) fixedly disposed between the bottom ends of two sliding columns (104) located on the same side. Multiple sliding tables 1 (203) are slidably disposed inside the movable seat 1 (201). Two movable seats 2 (202) are fixedly disposed between the bottom ends of the movable seat 1 (201) and are symmetrically distributed with respect to the vertical center of the movable seat 1 (201). Multiple sliding tables 2 (204) are slidably disposed inside the movable seats 2 (202).

3. The carbon foil coating thickness detection device as described in claim 2, characterized in that: Both slide one and slide two are connected to a X-ray thickness gauge at their bottom ends.

4. The carbon foil coating thickness detection device as described in claim 2, characterized in that: The movable seat one (201) is rotatably equipped with an adjusting screw one (206), the movable seat two (202) is rotatably equipped with an adjusting screw two (207), the slide one (203) is threadedly connected to the adjacent adjusting screw one (206), and the slide two (204) is threadedly connected to the adjacent adjusting screw two (207).

5. The carbon foil coating thickness detection device as described in claim 4, characterized in that: A drive seat (208) is fixedly arranged between the two movable seats 1 (201) and a drive seat (208) is also fixedly arranged between the two movable seats 2 (202). Each drive seat (208) has two rotating rods (209) symmetrically distributed with respect to the vertical center of the drive seat (208) inside. A bevel gear 1 (210) is fixedly sleeved at the end of each rotating rod (209). A bevel gear 2 (211) is fixedly sleeved at the end of each adjusting screw 1 (206) and adjusting screw 2 (207) near the bevel gear 1 (210). The bevel gear 2 (211) meshes with the adjacent bevel gear 1 (210).

6. The carbon foil coating thickness detection device as described in claim 5, characterized in that: Each of the aforementioned drive seats (208) is equipped with a dual-axis motor (212), and the output shaft of each of the aforementioned dual-axis motors (212) is connected and fixed to the adjacent adjusting screw (206) via a coupling.

7. The carbon foil coating thickness detection device as described in claim 6, characterized in that: The upper surface of the bracket (103) is provided with an electric push rod (108), and the lower end of the telescopic end of the electric push rod (108) is provided with a fixing plate, which is connected and fixed between the two movable seats (202).

8. The carbon foil coating thickness detection device as described in claim 1, characterized in that: The upper surface of the base (101) is provided with a conveyor seat (105), and multiple rotating rollers are rotatably arranged inside the conveyor seat (105), and a conveyor belt (106) is provided between the rotating rollers for transmission.

9. The carbon foil coating thickness detection device as described in claim 8, characterized in that: A servo motor (107) is provided on the outside of the conveyor seat (105), and the output shaft of the servo motor (107) is fixed to the rotating roller by a coupling.

10. The carbon foil coating thickness detection device as described in claim 1, characterized in that: The lower surface of the base (101) is provided with a plurality of support legs (102), and the front side of the base (101) is rotatably provided with a plurality of door panels (109).

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