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Battery pole piece coating adjusting device and adjusting method thereof

A technology for regulating devices and battery pole pieces, which is applied to devices and coatings that apply liquid to the surface, and can solve the problems of uncontrollable adjustment parameters, low precision, and inability to improve products in time.

Pending Publication Date: 2020-10-23
耿晋
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Problems solved by technology

[0019] The above-mentioned mechanical adjustment method to improve the coating quality is actually mainly to adjust the dC2 / C2 item. Due to the corresponding time problem of the mechanical deformation of the die lip, the immediacy of the adjustment is extremely low. At present, some manufacturers propose to change the viscosity of the slurry by controlling the temperature Adjust dη / η, or mechanically adjust the dB / B item by intercepting the slurry. However, these adjustment methods also have slow response time, low precision, and uncontrollable adjustment parameters. Passive adjustment can only be performed after defects appear. Failure to improve products in time

Method used

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  • Battery pole piece coating adjusting device and adjusting method thereof
  • Battery pole piece coating adjusting device and adjusting method thereof
  • Battery pole piece coating adjusting device and adjusting method thereof

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Embodiment Construction

[0044] The specific implementation manners of the present invention will be described in more detail below with reference to the drawings and examples, so as to better understand the solutions of the present invention and the advantages of various aspects. However, the specific embodiments and examples described below are for the purpose of illustration only, rather than limiting the present invention.

[0045] The inventor found through research that due to the atmospheric pressure P D Constant, the requirements for lip precision, coating spacing and consistency of slurry properties can all be expressed as P 2 The consistency requirement of the pressure at (Fig. 4), such as formula 5:

[0046] Formula 5

[0047]

[0048] Therefore, the present invention proposes an adjustment method and corresponding coating adjustment equipment. The pressure measuring element is arranged inside the coating head, and the lateral distribution P of the slurry pressure in the coating head c...

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Abstract

The invention relates to a battery pole piece coating adjusting device and an adjusting method thereof. The adjusting device is arranged in a battery pole piece coating device and is used for adjusting the surface coating quality of a coated substrate in real time. The adjusting device is a pressure adjusting device and detects the pressure of slurry in the battery pole piece coating device in real time and compensates for the pressure of the slurry as needed in real time, so that the pressure at an outlet of the battery pole piece coating device meets the demand, and a purpose of adjusting the surface coating quality of the substrate is achieved. The battery pole piece coating adjusting device can adjust the coating online in real time to improve higher outlet fluid distribution uniformity, improve the product quality and achieve automatic coating adjusting control, so as to improve the production efficiency.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery pole piece coating adjustment device and an adjustment method thereof. Background technique [0002] The main energy storage element of the battery is the battery pole piece, that is, the current collector metal foil coated with a thin layer of electrode material, and its main production method is the slot extrusion coating technology. With the market's increasing requirements for battery consistency and cost control, the production of pole pieces requires coating devices to achieve higher coating uniformity and automation. [0003] At present, most of the devices used in the industry for pole piece coating are non-adjustable extrusion dies, and the coating quality depends on processing accuracy and early design. However, lithium battery slurry is a non-Newtonian fluid with a wide range of properties, and there are coefficient changes in the production process. It is...

Claims

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Application Information

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IPC IPC(8): B05C11/10
CPCB05C11/1013B05C11/1005
Inventor 耿晋
Owner 耿晋
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