Start-stop battery

• Main Authors: CHEN XIAOPING, XING WEIWEI, LI XIAOBING, WEN YIBO, HU ZELIN
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2018
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a start-stop battery, comprising a battery plate and a separator. The battery plate comprises a battery positive electrode and a battery negative electrode, wherein the material of the negative electrode is formed by lithium titanate crystal covering the surface of basic graphite, the lithium titanate is doped by magnesium or aluminum, the diffusion coefficient of lithium ions in the lithium titanate crystal has a larger magnitude than that in graphite, thereby increasing the ion diffusion in the lithium titanate and on the solid surface of the electrolyte, speeding upthe charging and discharging reaction speed, and improving the power performance and low-temperature charging and discharging performance of the battery. The invention solves the diffusion bottleneckof the start-stop lithium ion battery in the negative electrode under a low temperature, greatly improves the reaction speed of the ion battery during the charging and discharging process, and furtherobviously improves the pow