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Battery interface improvement method and battery interface improvement system

A battery and interface technology, which is applied in the direction of secondary battery charging/discharging, secondary batteries, battery pack components, etc., can solve the problems of insufficient electrolyte infiltration, long preparation process time, black spots, etc., and improve the battery interface The effect of analyzing lithium and black spots, improving the infiltration efficiency and prolonging the service life of the battery

Active Publication Date: 2021-05-07
SVOLT ENERGY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for improving the battery interface, which solves the problems of the existing battery preparation process of long time and insufficient electrolyte infiltration, and effectively improves the phenomenon of lithium analysis and black spots on the battery interface

Method used

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  • Battery interface improvement method and battery interface improvement system
  • Battery interface improvement method and battery interface improvement system
  • Battery interface improvement method and battery interface improvement system

Examples

Experimental program
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Embodiment 1

[0036] figure 1 It is a flowchart of a method for improving the battery interface provided by Embodiment 1 of the present invention. This embodiment is applicable to improving the application scene of the negative electrode sheet lithium or black spots of the lithium battery in the battery manufacturing process. The method can be configured by There are specific algorithms for battery preparation software and hardware to execute, specifically including the following steps:

[0037] Such as figure 1 As shown, the method for improving the battery interface includes the following steps:

[0038] Step S1: Inject a first predetermined proportion of electrolyte solution into the battery body to obtain a primary liquid-injected battery.

[0039] Step S2: Perform static treatment on the primary liquid-filled battery, and control the rotation of the liquid-filled battery at a preset angle every preset interval during the static process.

[0040] Wherein, the preset interval time ref...

Embodiment 2

[0126] Based on the above-mentioned embodiments, Embodiment 2 of the present invention provides a system for improving the battery interface. This embodiment is applicable to the application scenario of improving the negative electrode sheet lithium or black spots of the lithium battery in the battery manufacturing process. Figure 6 It is a schematic structural diagram of a battery interface improvement system provided in Embodiment 2 of the present invention.

[0127] Such as Figure 6 As shown, the battery interface improvement system 200 includes: a battery body 210, a liquid injection device 220, a pre-charging device 230, and a battery static device 100; the liquid injection device 220 is used to inject a first preset ratio of electrolytic liquid to obtain a primary liquid-injected battery; the battery static device 100 is used for static treatment of the primary liquid-injected battery, and during the static process, the battery static device 100 controls the rotation o...

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Abstract

The invention discloses a battery interface improvement method and a battery interface improvement system. The method comprises the steps: injecting a first preset proportion of electrolyte into a battery body, and obtaining a primary liquid injection battery; carrying out standing treatment on the primary liquid injection battery, and in a standing process, enabling the primary liquid injection battery to rotate by a preset angle every preset time interval; and after the standing time reaches the preset total standing time, carrying out negative pressure pre-charging treatment on the primary liquid injection battery to obtain a semi-finished battery. By changing the standing posture of the battery in the standing process, the electrolyte in the battery fully flows, the phenomenon of electrolyte bottom deposition caused by a gravity effect is relieved, the infiltration effect of the electrolyte is improved, the infiltration efficiency is improved, the standing time is shortened, the production efficiency is improved, and the phenomena of lithium precipitation and black spots on a battery interface are effectively improved.

Description

technical field [0001] The invention relates to the technical field of battery preparation, in particular to a battery interface improvement method and a battery interface improvement system. Background technique [0002] Lithium battery is the fastest growing item in the new energy industry. Lithium battery is more and more used in daily life, and has been widely used in the fields of automobiles and energy storage. [0003] With the development of demand for lithium batteries in various industries, the safety performance requirements of lithium batteries are getting higher and higher, and the compaction density and external dimensions of battery pole pieces are also increasing. In the battery preparation process, the following problems will occur: ( 1) As the compaction density of the pole piece increases, the active material in the pole piece becomes denser, and the effect of the electrolyte infiltrating the pole piece becomes worse and worse; (2) As the size of the batte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M10/44H01M50/609
CPCH01M10/058H01M10/446Y02E60/10Y02P70/50
Inventor 马毅丁亚男
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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