Preparation method of high-rate low-temperature-rise lithium ion battery

• Main Authors: QI HONGYUN, FENG YUAN, DONG YONGFENG, JIA QIURONG
• Format: Patent
• Language: Chinese; English
• Published: 13.09.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a preparation method of a high-rate low-temperature-rise lithium ion battery, which is characterized in that the ohmic internal resistance of the lithium ion battery is reduced by optimizing the design of a battery cell, increasing the content of a conductive agent in a positive electrode formula and a negative electrode formula, so that the temperature rise of the lithium ion battery under high-rate charging and discharging is reduced, and the service life of the lithium ion battery is prolonged. And the safety and the reliability of the lithium ion battery are improved. 本发明公开了一种高倍率低温升锂离子电池的制备方法，本发明通过优化电芯设计，增加了正、负极配方中导电剂的含量，降低了锂离子电池的欧姆内阻，从而降低了锂离子电池在高倍率充放电下的温升，提高了锂离子电池的安全性和可靠性。