A kind of semi-solid lithium ion battery preparation with edge scraping device

Abstract

The utility model relates to lithium ion battery manufacturing equipment technical field, concretely is a kind of edge scraping device for semi-solid lithium ion battery preparation, including shell, the inside installation of shell is equipped with electric guide rail, the output end of electric guide rail is fixedly connected with slider, the side installation of slider is equipped with wire laser sensor, the side fixed connection of slider is equipped with sleeve, the inside wall of sleeve is equipped with piezoelectric ceramic, the side fixed connection of piezoelectric ceramic is equipped with stem, and one end of stem is fixedly connected with first edge scraping part;The utility model edge thickness tolerance is controlled at ±2μm, roughness reduces 73%, meets the strict requirement of high energy density battery to pole piece consistency, first edge scraping part is combined with second edge scraping part, and through the dual action of "rigid finishing+flexible smoothing".

Description

Technical Field

[0001] This utility model relates to the technical field of lithium-ion battery manufacturing equipment, specifically to a scraping device for preparing semi-solid lithium-ion batteries. Background Technology

[0002] Semi-solid-state lithium-ion batteries have become a research hotspot for next-generation battery technology due to their combination of high safety and energy density. In their fabrication process, edge trimming after electrode coating is a crucial step, but current technologies face the following bottlenecks:

[0003] 1. Insufficient edge scraping precision: Traditional rigid scrapers cannot adapt to the thixotropic properties of semi-solid slurries (viscosity 10^4-10^5 mPa·s), and the coating edge is prone to thickness fluctuations (±5μm) and serrated burrs, which increases the risk of battery short circuit.

[0004] 2. Adjustment lag: Manual adjustment of the scraper angle and pressure cannot respond in real time to changes in slurry viscosity (such as viscosity fluctuations of ±10% caused by temperature fluctuations), resulting in a scrap rate as high as 8%-12%.

[0005] 3. Compatibility limitations: The single scraper structure is difficult to adapt to the scraping requirements of electrode sheets with different thicknesses (50-200μm) and material systems (such as silicon-based / sulfur-based semi-solid slurries), and the equipment changeover time is long (>30min).

[0006] Existing scraping devices lack the ability to dynamically sense and adaptively adjust the characteristics of the slurry. Therefore, a scraping device for the preparation of semi-solid lithium-ion batteries is proposed. Utility Model Content

[0007] In view of this, the present invention provides a scraping device for the preparation of semi-solid lithium-ion batteries to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0008] The technical solution of this utility model is implemented as follows: a scraping device for preparing semi-solid lithium-ion batteries includes a housing, an electric guide rail installed inside the housing, a slider fixedly connected to the output end of the electric guide rail, a wire laser sensor installed on one side of the slider, a sleeve fixedly connected to one side of the slider, a piezoelectric ceramic installed on the inner side wall of the sleeve, a rod fixedly connected to one side of the piezoelectric ceramic, and a first scraping part fixedly connected to one end of the rod.

[0009] More preferably, an electric push rod is fixedly connected to one side of the slider, and a second scraping part is fixedly connected to the telescopic end of the electric push rod.

[0010] More preferably, a controller is mounted on the outer wall of the housing.

[0011] The present invention has the following advantages due to the adoption of the above technical solution:

[0012] I. The edge thickness tolerance of this utility model is controlled within ±2μm, and the roughness is reduced by 73%, which meets the stringent requirements of high energy density batteries for electrode consistency. The first scraping part and the second scraping part are combined, and the dual function of "rigid trimming + flexible smoothing" is achieved.

[0013] Second, visual inspection and dynamic adjustment closed-loop control enable adaptive control of slurry characteristics, reducing manual intervention by more than 90%.

[0014] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the sleeve of this utility model.

[0018] Reference numerals: 1. Housing; 2. Electric guide rail; 3. Slider; 4. Line laser sensor; 5. Sleeve; 6. Piezoelectric ceramic; 7. Rod; 8. First scraping section; 9. Electric push rod; 10. Second scraping section; 11. Controller. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0020] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figure 1-2As shown, this utility model embodiment provides a scraping device for preparing semi-solid lithium-ion batteries, including a housing 1, an electric guide rail 2 installed inside the housing 1, a slider 3 fixedly connected to the output end of the electric guide rail 2, a wire laser sensor 4 installed on one side of the slider 3, a sleeve 5 fixedly connected to one side of the slider 3, a piezoelectric ceramic 6 installed on the inner side wall of the sleeve 5, a rod 7 fixedly connected to one side of the piezoelectric ceramic 6, and a first scraping part 8 fixedly connected to one end of the rod 7.

[0022] In one embodiment, an electric push rod 9 is fixedly connected to one side of the slider 3, and a second scraping part 10 is fixedly connected to the telescopic end of the electric push rod 9. With the setting of the second scraping part 10, the electric push rod 9 drives the second scraping part 10 to be adjusted to a suitable position according to the basic scraping requirements, and the second scraping part 10 performs a smoothing operation on the area scraped by the first scraping part 8.

[0023] In one embodiment, a controller 11 is installed on the outer wall of the housing 1; the controller 11 controls the electric guide rail 2, the piezoelectric ceramic 6 and the electric push rod 9 based on the edge data fed back in real time by the line laser sensor 4.

[0024] In operation, the electric guide rail 2 drives the line laser sensor 4 to scan the edge of the electrode at a frequency of 1000Hz, constructing a three-dimensional contour model and measuring parameters such as edge thickness and flatness in real time. Based on the edge data fed back by the line laser sensor 4 in real time, the piezoelectric ceramic 6 drives the first scraping part 8 to perform dynamic adjustment. When the semi-solid slurry moves with the coating platform to below the first scraping part 8, the first scraping part 8 contacts the edge of the slurry at a set angle, using the shearing force generated by elastic deformation to trim excess slurry and form a preliminary edge contour. The second scraping part 10 moves synchronously behind the first scraping part 8, eliminating the serrated burrs generated by the first scraping part 8 through squeezing and smoothing, and at the same time, the edge slurry is compacted a second time to reduce surface roughness.

[0025] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A scraping device for preparing semi-solid lithium-ion batteries, characterized in that: Includes a housing (1), an electric guide rail (2) is installed inside the housing (1), a slider (3) is fixedly connected to the output end of the electric guide rail (2), a wire laser sensor (4) is installed on one side of the slider (3), a sleeve (5) is fixedly connected to one side of the slider (3), a piezoelectric ceramic (6) is installed on the inner wall of the sleeve (5), a rod (7) is fixedly connected to one side of the piezoelectric ceramic (6), and a first scraping part (8) is fixedly connected to one end of the rod (7).

2. The edge-scraping device for preparing a semi-solid lithium-ion battery according to claim 1, characterized in that: An electric push rod (9) is fixedly connected to one side of the slider (3), and a second scraping part (10) is fixedly connected to the telescopic end of the electric push rod (9).

3. The edge-scraping device for preparing a semi-solid lithium-ion battery according to claim 1, characterized in that: The controller (11) is mounted on the outer wall of the housing (1).

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