Production battery safety issues analysis

What challenges does battery production face?

The rise in battery production faces challenges from manufacturing complexity and sensitivity, causing safety and reliability issues. This Perspective discusses the challenges and opportunities for high-quality battery production at scale.

Are cylindrical lithium-ion batteries safe?

Though cylindrical batteries often incorporate safety devices, the safety of the battery also depends on its design and manufacturing processes. This study conducts a design and process failure mode and effect analysis (DFMEA and PFMEA) for the design and manufacturing of cylindrical lithium-ion batteries, with a focus on battery safety. 1.

What factors affect battery safety?

The external environment (which controls the temperature, voltage, and electrochemical reactions) is the leading cause of internal disturbances in batteries . Thus, the environment in which the battery operates also plays a significant role in battery safety.

How can battery safety be improved in practical applications?

Central to this approach are comprehensive monitoring, early diagnosis, and risk prediction at the cell, pack, and system levels, which address the challenges and enhance the safety of batteries in practical applications.

What are some high-profile safety events involving lithium-ion batteries?

Indeed, since the commercialization of lithium-ion battery technology in 1991 7, 8, several high-profile safety events (Fig. 1a) have occurred in sectors such as consumer electronics, electric micromobility, EVs, aviation, and medical devices 9, 10. One infamous EV safety case required a USD $1.9B fleetwide recall 11, 12.

What is the experimental method for studying defective batteries?

The experimental method for studying defective batteries typically involves the following steps: preparing defective batteries, conducting battery aging and charge-discharge tests, and performing disassembly for observation and analysis.