This paper investigates the heat generation and heat dissipation performance of a battery pack based on the normal heat generation and thermal runaway mechanism of lithium-ion batteries using COMSOL Multiphysics simulation platform software.
Combined with the related research on the thermal management technology of the lithium-ion battery, five liquid-cooled temperature control models are designed for thermal management, and their temperature control simulation and effect analysis are carried out.
Moreover, high temperature also has an impact on the thermal stability of lithium-ion batteries. Tanguchi found that the state of charge (SOC) has the greatest impact on the battery safety during the high-temperature aging. (26) The higher the SOC is, the worse the thermal stability is.
The lower the temperature, the smaller the synergistic angle of the fluid field and the more consistent the synergistic effect at different flow rates and coolant temperatures. With an increase in cooling flow rate and a decrease in temperature, the heat exchange between the lithium-ion battery pack and the coolant gradually tends to balance.
The self-production of heat during operation can elevate the temperature of LIBs from inside. The transfer of heat from interior to exterior of batteries is difficult due to the multilayered structures and low coefficients of thermal conductivity of battery components , , .
The heat generation mechanism of lithium-ion batteries is mainly due to the working principle and characteristics of the lithium-ion battery; the working process is always accompanied by the occurrence of various reaction processes inside it, which leads to a large amount of heat generation and accumulation inside it.
By analyzing the cooling characteristics, including convective heat transfer and mechanisms for enhancing heat dissipation, this paper seeks to enhance the efficiency of …
3 · Here, ρ is the density of the battery; C p is the specific heat capacity of the battery; k x, k y, k z are the equivalent thermal conductivity in the x, y, z directions of the battery, …
In order to reduce the maximum temperature and improve the temperature uniformity of the battery module, a battery module composed of sixteen 38120-type lithium-ion …
However, while there are many factors that affect lithium-ion batteries, the most important factor is their sensitivity to thermal effects. Lithium-ion batteries perform best when …
A new thermal analysis of the single battery cell is conducted to identify the most critical zone of the cell in terms of heat generation. This analysis allowed us to maximize heat …
This paper investigates the heat generation and heat dissipation performance of a battery pack based on the normal heat generation and thermal runaway mechanism of …
An efficient battery pack-level thermal management system was crucial to ensuring the safe driving of electric vehicles. To address the challenges posed by insufficient …
This paper investigates the heat generation and heat dissipation performance of a battery pack based on the normal heat generation and thermal runaway mechanism of lithium-ion batteries using COMSOL Multiphysics …
Three SOC zones were identified during charge / discharge processes for which the entropic heat coefficient was endothermic or exothermic. The cycle initial state of charge …
A new thermal analysis of the single battery cell is conducted to identify the most critical zone of the cell in terms of heat generation. This analysis allowed us to maximize heat …
Table 4 includes information on battery type, ambient temperature, C-rate, cooling methods compared, and key performance metrics such as maximum temperature, …
By analyzing the cooling characteristics, including convective heat transfer and mechanisms for enhancing heat dissipation, this paper seeks to enhance the efficiency of …
This study proposes three distinct channel liquid cooling systems for square battery modules, and compares and analyzes their heat dissipation performance to ensure …
The experimental results showed that the maximum temperature can be controlled below 45 °C when the heat generation power of the battery is <30 W. Xu et al. [32, …
High temperature not only degrades battery performance but also reduces battery safety. High temperature will accelerate battery capacity degradation. Zhang found that the degradation rate of battery capacity …
High temperature not only degrades battery performance but also reduces battery safety. High temperature will accelerate battery capacity degradation. Zhang found that …
Gas inlet flow velocity has an important influence on battery heat dissipation. Setting the inlet flow velocity from 0.2 to 1.0 m/s, other conditions were consistent with the …
Studies have shown that the operating temperature of lithium-ion batteries needs to be maintained between 20 °C and 40 °C, and the temperature difference cannot exceed 5 …
Lithium-ion batteries (LIBs) are commonly used in electric vehicles (EVs) due to their good performance, long lifecycle, and environmentally friendly merits. Heating LIBs at low …
The authors compared the estimation results of the heat generation in lithium-ion battery for various constant or pulse current charge/discharge patterns through the newly proposed detailed estimation …
Lithium plating is a specific effect that occurs on the surface of graphite and other carbon-based anodes, which leads to the loss of capacity at low temperatures. High …
The power battery is an important component of new energy vehicles, and thermal safety is the key issue in its development. During charging and discharging, how to …
Accurate measurement of temperature inside lithium-ion batteries and understanding the temperature effects are important for the proper battery management. In …
Chen et al. developed a 3D thermal model of a lithium-ion battery pack to examine the thermal behavior during discharge scenarios. The model consisted of layered cell …