The phenomenon of overcharging of energy storage lithium-ion batteries

Does overcharging affect lithium-ion batteries?

Overcharging is a common type of electrical abuse that significantly threatens the safety properties of lithium-ion batteries particularly in the service conditions of electric vehicles and grid energy storage. This study focuses on investigating the effects of varying degrees of overcharging and cycle numbers on batteries.

How is a single lithium ion battery overcharged?

In the standards or regulations, the overcharge performance of single lithium-ion battery is evaluated through several overcharge tests, during which a controlled current is applied to the tested battery (e.g. 1/3 C) up to a set of charge limits (e.g. 2.0 SOC, 1.5 times the upper cut-off voltage).

Does a pouch lithium-ion battery overcharge?

In this paper, the overcharge performance of a commercial pouch lithium-ion battery with Li y (NiCoMn) 1/3 O 2 -Li y Mn 2 O 4 composite cathode and graphite anode is evaluated under various test conditions, considering the effects of charging current, restraining plate and heat dissipation.

How effective are overcharge additives for lithium-ion batteries?

Compared to external protection devices (such as BMS, OSD, CID), the internal protection of overcharge additives are more effective. A complex polymer with aromatic functional groups, epoxy or propionate, will become a hot spot in the research of overcharge additives for lithium-ion batteries.

Can a polymer improve the overcharge protection capability of lithium-ion batteries?

A complex polymer with aromatic functional groups, epoxy, or propionate will become a hot spot in the research of overcharge additives for lithium-ion batteries. In a word, improving the overcharge protection capability is the key technology of high-capacity and high-power lithium-ion batteries.

Is epoxy a good overcharge additive for lithium-ion batteries?

A complex polymer with aromatic functional groups, epoxy or propionate, will become a hot spot in the research of overcharge additives for lithium-ion batteries. This review is expected to offer effective overcharge safety strategies and promote the development of lithium-ion battery with high-energy density.