Thermal conductivity of lithium ion battery

Why is thermal conductivity of lithium-ion battery electrode materials important?

Understanding the thermal conductivity (Λ) of lithium-ion (Li-ion) battery electrode materials is important because of the critical role temperature and temperature gradients play in the performance, cycle life and safety of Li-ion batteries , , , .

What is the thermal diffusivity of a lithium-ion battery?

A standard-sized lithium-ion battery has been calculated as having an average thermal diffusivity of 1.5 x 10 -15 m 2 /S at the positive electrode and thermal conductivity of 5 W/ (m/K) at the positive electrode, 0.334 W/ (m/K) at the separator and 1.04 W/ (m/K) at the negative electrode.

Do lithium-ion batteries need thermal models?

Author to whom correspondence should be addressed. To enhance our understanding of the thermal characteristics of lithium-ion batteries and gain valuable insights into the thermal impacts of battery thermal management systems (BTMSs), it is crucial to develop precise thermal models for lithium-ion batteries that enable numerical simulations.

Do lithium-ion batteries have a non-uniform temperature distribution?

One critical concern in the thermal modeling of lithium-ion batteries is the non-uniform temperature distributions within battery cells. To address this issue, various methods can be employed to achieve and demonstrate 3D thermal analysis, considering the spatial variations of temperature within the battery cell.

Do thermal conductivity changes affect Li-ion battery performance?

While our findings could be applied to a wide range of Li-ion batteries using solid electrode materials, it is also interesting to consider how thermal conductivity changes may impact the performance of secondary batteries containing liquid or semi-liquid electrode materials, e.g., liquid metal anode and redox flow batteries, respectively.

What is a thermal model for lithium ion batteries?

8. Algorithm Design of the Thermal Models of Lithium-Ion Batteries Developing thermal models for lithium-ion batteries involves creating mathematical or computational representations of the battery’s thermal performance in different operating conditions.