Packaging method for positive electrode active material
A double-walled, moisture-proof packaging method for positive electrode active material in lithium-ion batteries using dry air or inert gas, vibration, and sealing addresses moisture ingress and container damage, ensuring material integrity.
JP2026093625APending Publication Date: 2026-06-09TAIHEIYO CEMENT CORP
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- TAIHEIYO CEMENT CORP
- Filing Date
- 2024-11-28
- Publication Date
- 2026-06-09
AI Technical Summary
Technical Problem
There is a risk of moisture ingress during packaging, storage, and transportation of positive electrode active material in lithium-ion secondary batteries, which can compromise the integrity and performance of the battery.
Method used
A packaging method using a double-walled, moisture-proof packaging container filled with dry air or inert gas, followed by vibration to increase bulk density and degassing, and subsequent sealing to minimize moisture entry and container damage.
Benefits of technology
The method effectively suppresses moisture ingress and reduces the risk of container damage, maintaining the quality of the positive electrode active material during packaging, storage, and transportation.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026093625000001
Abstract
The present invention provides a packaging method for positive electrode active material that can suppress the ingress of moisture into the powder that constitutes the positive electrode active material during packaging, storage, and transportation. [Solution] The method for packaging positive electrode active material includes: a second step of filling the internal space of the inner container of a packaging container, which consists of an outer container and an inner container, both of which are moisture-proof, with one of the following gases: dry air, nitrogen gas, or an inert gas; a second step of putting powder that will become the positive electrode active material of a lithium-ion secondary battery into the internal space of the inner container filled with the gas; a third step of vibrating the inner container into which the powder has been put to make the bulk density of the powder 0.6 g / mL or more; a fourth step of sealing the inner container and sealing the internal space of the inner container; and a fifth step of sealing the outer container that houses the sealed inner container and sealing the internal space of the outer container.
Need to check novelty before this filing date? Find Prior Art