Honda motor co., ltd. (20240304961). LITHIUM SECONDARY BATTERY simplified abstract
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 20240304961 titled 'LITHIUM SECONDARY BATTERY
The abstract describes a lithium secondary battery with a unique design to prevent short circuits.
- Positive electrode with current collector and material mixture layer
- Negative electrode with lithium metal foil
- Thermally deformable separator near positive electrode, with extension portion in contact with lithium metal foil
- Separator has melting point of 80°C or higher, lower than lithium metal melting point
- Extension portion contacts positive electrode current collector when separator deforms, causing short circuit
Potential Applications: - Lithium secondary batteries for various electronic devices - Energy storage systems for renewable energy sources
Problems Solved: - Preventing short circuits in lithium secondary batteries - Enhancing safety and reliability of battery systems
Benefits: - Improved battery performance and longevity - Reduced risk of thermal runaway and short circuits
Commercial Applications: Title: "Innovative Lithium Secondary Battery Design for Enhanced Safety" This technology can be used in electric vehicles, portable electronics, and grid energy storage systems, offering a safer and more reliable energy storage solution.
Questions about Lithium Secondary Battery with Thermally Deformable Separator: 1. How does the thermally deformable separator prevent short circuits in the battery?
- The thermally deformable separator, with a melting point higher than lithium metal but lower than the separator's melting point, allows the extension portion to contact the positive electrode current collector when deformed, preventing short circuits.
2. What are the potential commercial applications of this innovative battery design?
- This technology can be utilized in electric vehicles, portable electronics, and energy storage systems, offering enhanced safety and reliability.
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.
