How many lithium-ion batteries are in a battery pack?
The rather compact battery pack is made up of 14 cylindrical lithium-ion batteries in two rows connected in the way of 1S14P (1 battery in series and 14 batteries in parallel) on the x-z plane (Vertical airflow direction) to realize different heat amount generated by batteries at different discharging rates.
What is a simplified lithium-ion battery pack?
The basic simplified model of the lithium-ion battery pack, which is equipped with a series of novel cooling systems and includes a single lithium-ion battery and different types of cooling structures, is shown in Fig. 1. The simplified single lithium-ion battery model has a length w of 120 mm, a width u of 66 mm, and a thickness v of 18 mm.
Can thermal runaway propagation occur in lithium-ion battery packs?
When the horizontal spacing is more than 4 mm or the vertical spacing of the battery is more than 8 mm in a closed environment, thermal runaway propagation cannot occur in the batteries. The research results provide some reference for the arrangement of lithium-ion battery packs in transportation and storage.
Do cell arrangement structures affect the thermal behavior of battery pack?
Wang et al. established the three-dimensional numerical model to explore the effects of different cell arrangement structures on the thermal behaviors of battery pack and the numerical results suggested that the optimal air cooling strategies should take into account the cooling effectiveness, cost and the space utilization of battery pack.
What is the maximum temperature of a lithium-ion battery pack?
The parameter Qm (kg s −1) is the mass flow rate of air coolant through battery pack with the staggered arrangement. The blue dash line is the maximum temperature limit (303.15 K) of the lithium-ion battery pack.
How many rows of cylindrical batteries are suitable for stagger-arranged battery pack?
Therefore, it is recommended that the compact arrangement of 10 rows of cylindrical batteries along the airflow direction is an appropriate configuration for the stagger-arranged battery pack, which is capable to satisfy the requirements of higher power density and cooling effectiveness of battery pack comprehensively.
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What to do if the battery pack is arranged vertically
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