18586547. LITHIUM SECONDARY BATTERY simplified abstract (Honda Motor Co., Ltd.)
Contents
LITHIUM SECONDARY BATTERY
Organization Name
Inventor(s)
Wataru Shimizu of Saitama (JP)
LITHIUM SECONDARY BATTERY - A simplified explanation of the abstract
This abstract first appeared for US patent application 18586547 titled 'LITHIUM SECONDARY BATTERY
The abstract describes a lithium secondary battery with a positive electrode, negative electrode, and a thermally deformable separator to prevent short circuits.
- Positive electrode with current collector and material mixture layer
- Negative electrode with current collector and lithium metal foil
- Thermally deformable separator near positive electrode, with melting point of 80°C or higher
- Extension portion from lithium metal foil to contact separator in case of deformation
- Short circuit prevention between positive and negative electrodes
Potential Applications: - Energy storage for portable electronics - Electric vehicles - Renewable energy storage systems
Problems Solved: - Short circuit prevention in lithium secondary batteries - Enhanced safety features
Benefits: - Improved battery performance - Increased safety in battery operation
Commercial Applications: - Battery manufacturing industry - Electric vehicle manufacturers - Renewable energy companies
Questions about Lithium Secondary Battery Technology: 1. How does the thermally deformable separator prevent short circuits in the battery? 2. What are the key advantages of using a lithium secondary battery in electric vehicles?
Frequently Updated Research: - Ongoing studies on improving the efficiency and safety of lithium secondary batteries.
Original Abstract Submitted
A lithium secondary battery of the present invention comprises: a positive electrode comprising a positive electrode current collector and a positive electrode material mixture layer, a negative electrode comprising a negative electrode current collector and a lithium metal foil, and a separator, and further comprises a thermally deformable separator disposed in the vicinity of the positive electrode material mixture layer on the surface of the positive electrode current collector, and an extension portion that extends from the lithium metal foil so as to be in contact with the thermally deformable separator; the thermally deformable separator having a melting point of 80° C. or higher, which is equal to or lower than the melting point of lithium metal; and when a thermally deformable separator thermally deforms, the extension portion comes into contact with the positive electrode current collector, resulting in a short circuit of the positive electrode and the negative electrode.
