Preparation device for silicon-based film negative plate of lithium battery

A silicon-based thin film and preparation device technology, which is applied in electrode manufacturing, battery electrodes, electrostatic spraying devices, etc., can solve problems such as unevenness of the silicon-based thin film on the surface of copper foil, and avoid lithium powder accumulation, capacity reduction, and aggregation Effect

Active Publication Date: 2021-11-26
苏州睿锂物联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome that when the copper foil is coated with silicon-based slurry, the excess silicon-based slurry on the upper surface cannot fall naturally by gravity, resulting in the accumulation of part of the silicon-based slurry on the upper surface of the copper foil. After drying, the silicon-based film on the surface of the copper foil is not flat, affecting the use of the shortcomings, the invention provides a silicon-based thin film negative electrode preparation device for lithium batteries

Method used

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  • Preparation device for silicon-based film negative plate of lithium battery
  • Preparation device for silicon-based film negative plate of lithium battery
  • Preparation device for silicon-based film negative plate of lithium battery

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A lithium battery silicon-based thin film negative plate preparation device, such as Figure 1-3 As shown, it includes feet 1, a first mounting plate 2, a transmission unit, a flattening unit and a drying unit; the top of the six feet 1 is connected to the first mounting plate 2; the upper side of the first mounting plate 2 is connected to a transmission unit; the upper left part of the first mounting plate 2 is connected with a flattening unit; the upper middle part of the first mounting plate 2 is connected with a drying unit.

[0037] The transmission unit includes a first mounting frame 301, a second mounting frame 302, a third mounting frame 303, a fourth mounting frame 304, a first motorized guide roller 305, a second motorized guide roller 306, a third motorized guide roller 307, a Four motorized guide rollers 308, the fifth motorized guide roller 309 and the ninth motorized guide roller 3010; the upper left part of the first mounting plate 2 is fixedly connected...

Embodiment 2

[0046] On the basis of Example 1, such as figure 1 with Figure 10-17 As shown, it also includes a lithium supplementary powder unit; the upper right part of the first mounting plate 2 is connected with a lithium supplementary powder unit, and the lithium supplementary powder unit is connected with the transmission unit; the lithium supplementary powder unit includes a seventh mounting frame 601, a Two springs 602, the fifth mounting plate 603, the first vibration motor 604, the eighth mounting frame 605, the second electric slide rail 606, the second electric slider 607, the baffle plate 608, the lithium powder box 609, the second electric push rod 6010, the first insulating block 6011, the first screen fastening rod 6012, the insulating slide rail 6013, the second insulating block 6014, the straight plate electrode 6015, the third insulating block 6016, the second screen fastening rod 6017, the third L shape block 6018, screen electrode 6019, second vibrating motor 6020 and...

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Abstract

The invention relates to the field of lithium batteries, in particular to a preparation device for a silicon-based film negative plate of a lithium battery, and aims at solving the problems that when copper foil is coated with silicon-based slurry, redundant silicon-based slurry on the upper surface cannot naturally fall under the action of gravity, thus, part of silicon-based slurry is accumulated on the upper surface of the copper foil, a silicon-based film on the surface of the copper foil after drying is uneven, and use is affected. According to the technical scheme, the preparation device for the silicon-based film negative plate of the lithium battery comprises a first mounting plate, a conveying unit and the like, and the upper side of the first mounting plate is connected with the conveying unit which is used for cooperatively conveying copper foil to stably transfer the copper foil. By means of the preparation device, preparation of the silicon-based film negative plate of the lithium battery is realized; and the surface of the copper foil is uniformly coated with silicon-based slurry, so that the phenomenon that the silicon-based film on the surface of the copper foil is uneven due to the accumulation of silicon-based slurry on the surface of the copper foil is avoided.

Description

technical field [0001] The invention relates to the field of lithium batteries, in particular to a preparation device for silicon-based thin film negative electrodes of lithium batteries. Background technique [0002] At present, silicon-based thin-film negative electrodes are prepared by making silicon-based materials into slurry, and then coating them on copper foil and drying them. In the prior art, after the copper foil is coated with silicon-based slurry, a winder Copper foil is transported, but the excess silicon-based slurry on the upper surface of the copper foil cannot fall naturally through gravity during transmission, resulting in the accumulation of some silicon-based slurry on the upper surface of the copper foil. After drying, the silicon-based film on the surface of the copper foil is uneven, affecting use; [0003] In addition, for the negative electrode sheet, during the first charging process of the lithium battery, part of the lithium will be consumed due...

Claims

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Application Information

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IPC IPC(8): B05C9/14B05C13/02B05B5/08B05C11/02B05C3/132B05B5/16B05B5/053H01M4/04H01M4/139
CPCB05C9/14B05C13/02B05B5/081B05C11/028B05C3/125B05B5/1683B05B5/0533H01M4/0404H01M4/139Y02E60/10
Inventor 洪木南李可心刘波
Owner 苏州睿锂物联科技有限公司
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