18612029. SECONDARY BATTERY AND ELECTRONIC APPARATUS simplified abstract (Ningde Amperex Technology Limited)
Contents
SECONDARY BATTERY AND ELECTRONIC APPARATUS
Organization Name
Ningde Amperex Technology Limited
Inventor(s)
SECONDARY BATTERY AND ELECTRONIC APPARATUS - A simplified explanation of the abstract
This abstract first appeared for US patent application 18612029 titled 'SECONDARY BATTERY AND ELECTRONIC APPARATUS
Simplified Explanation: This patent application describes a secondary battery with a unique combination of positive and negative electrode materials and electrolyte to improve cycling performance at high voltages.
- The positive electrode contains lithium cobalt oxide-based material.
- The negative electrode includes a mix of natural graphite and artificial graphite.
- The electrolyte consists of propylene carbonate in specific percentages.
- The battery design matches the decay rates of the electrodes during high-voltage cycling for enhanced performance.
Key Features and Innovation:
- Positive electrode with lithium cobalt oxide-based material
- Negative electrode with natural and artificial graphite mix
- Electrolyte containing propylene carbonate
- Improved cycling performance at high voltages
Potential Applications: This technology can be used in various high-voltage applications such as electric vehicles, portable electronics, and grid energy storage systems.
Problems Solved: The technology addresses the issue of decay rate mismatch between positive and negative electrodes in high-voltage cycling, leading to improved battery performance and longevity.
Benefits:
- Enhanced cycling performance at high voltages
- Improved overall battery efficiency
- Extended battery lifespan
Commercial Applications: This technology has significant implications for the electric vehicle industry, portable electronics market, and renewable energy storage sector due to its improved cycling performance and longevity.
Questions about the Technology: 1. How does the unique combination of electrode materials and electrolyte improve battery performance at high voltages? 2. What specific advantages does the use of natural and artificial graphite in the negative electrode offer in this secondary battery design?
Original Abstract Submitted
A secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive electrode active material. The positive electrode active material is a lithium cobalt oxide-based material. The negative electrode includes a negative electrode active material. The negative electrode active material is natural graphite and artificial graphite, where a mass percentage of the natural graphite is 5% to 30% based on mass of the negative electrode active material. The electrolyte includes propylene carbonate, where a mass percentage of the propylene carbonate is 1% to 11% based on mass of the electrolyte. The secondary battery, through a reasonable combination of positive and negative electrode active materials and the electrolyte system, matches the decay rate of the negative electrode with that of the positive electrode during high-voltage cycling, greatly enhancing the cycling performance of the secondary battery at high voltages.
