Transient modeling and validation of lithium ion battery pack with air cooled thermal management system for electric vehicles

Cho, G. Y.; Choi, Jeong-Seon; Park, J. H.; W., S.

doi:10.1007/s12239-014-0083-x

Cited by 47 publications

(18 citation statements)

References 19 publications

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“…However, the above research on the heat dissipation performance of the battery pack only considers several factors that may affect it. Then the structural optimization and control optimization of the battery pack air‐cooled system are performed, but the theoretical basis behind it is not considered . At the same time, basically, few people have analyzed the essential reason of battery pack heat dissipation from the perspective of the internal flow field and the external flow field of the battery pack .…”

Section: Introductionmentioning

confidence: 99%

Research on heat dissipation performance and flow characteristics of air-cooled battery pack

Sun

et al. 2018

Int J Energy Res

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Summary With the depletion of fossil fuels and the aggravation of environmental pollution, the research and development speed of electric vehicles has been accelerating, and the thermal management of battery pack has become increasingly important. This paper selects the electric vehicle battery pack with natural air cooling as the study subject, conducts simulation analysis of the heat dissipation performance of battery packs with and without vents. Then this paper researches on the influence of internal flow field and external flow field. Field synergy principle is used to analyze the effect of velocity field and temperature field amplitude. The results show the following: it is found that the maximum temperature rise and the internal maximum temperature difference of the battery pack with vents are reduced by about 23.1% and 19.9%, raising speed value can improve the heat dissipation performance, and raising temperature value can decrease the heat dissipation performance. Reasonable design of the vents can make the inner and outer flow field work synergistically to achieve the best cooling effect. Then the reference basis for the air cooling heat dissipation performance analysis of electric vehicle, battery pack structure arrangement, and air‐inlet and air‐outlet pattern choosing are offered.

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Section: Introductionmentioning

confidence: 99%

Research on heat dissipation performance and flow characteristics of air-cooled battery pack

Sun

et al. 2018

Int J Energy Res

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“…Various inlet airflow rates and various discharge rates were considered and compared. In the study of Cho et al [14], the results showed that as the inlet air temperature increased, the maximum temperature of the battery pack was increased and the maximum temperature difference was reduced due to less heat generation of the battery pack. Fan et al [15] found that the maximum temperature and the maximum temperature difference of the battery pack were both reduced as the inlet flow rate was increased.…”

Section: Introductionmentioning

confidence: 99%

Design of Parallel Air-Cooled Battery Thermal Management System through Numerical Study

Chen

et al. 2017

Energies

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Abstract:In electric vehicles, the battery pack is one of the most important components that strongly influence the system performance. The battery thermal management system (BTMS) is critical to remove the heat generated by the battery pack, which guarantees the appropriate working temperature for the battery pack. Air cooling is one of the most commonly-used solutions among various battery thermal management technologies. In this paper, the cooling performance of the parallel air-cooled BTMS is improved through choosing appropriate system parameters. The flow field and the temperature field of the system are calculated using the computational fluid dynamics method. Typical numerical cases are introduced to study the influences of the operation parameters and the structure parameters on the performance of the BTMS. The operation parameters include the discharge rate of the battery pack, the inlet air temperature and the inlet airflow rate. The structure parameters include the cell spacing and the angles of the divergence plenum and the convergence plenum. The results show that the temperature rise and the temperature difference of the batter pack are not affected by the inlet air flow temperature and are increased as the discharge rate increases. Increasing the inlet airflow rate can reduce the maximum temperature, but meanwhile significantly increase the power consumption for driving the airflow. Adopting smaller cell spacing can reduce the temperature and the temperature difference of the battery pack, but it consumes much more power. Designing the angles of the divergence plenum and the convergence plenum is an effective way to improve the performance of the BTMS without occupying more system volume. An optimization strategy is used to obtain the optimal values of the plenum angles. For the numerical cases with fixed power consumption, the maximum temperature and the maximum temperature difference at the end of the five-current discharge process for the optimized BTMS are respectively reduced by 2.1 K and 4.3 K, compared to the original system.

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“…Battery thermal management technologies can be divided into active cooling and passive cooling. For the active cooling, the cooling mediums are air and liquid, which are pumped into the battery pack to take away the heat generated when the battery is working. Passive thermal management includes heat pipes and phase change material .…”

Section: Introductionmentioning

confidence: 99%

Heat dissipation analysis of different flow path for parallel liquid cooling battery thermal management system

Yang

et al. 2020

Int J Energy Res

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As the main form of energy storage for new energy automobile, the performance of lithium-ion battery directly restricts the power, economy, and safety of new energy automobile. The heat-related problem of the battery is a key factor in determining its performance, safety, longevity, and cost. In this paper, parallel liquid cooling battery thermal management system with different flow path is designed through changing the position of the coolant inlet and outlet, and the influence of flow path on heat dissipation performance of battery thermal management system is studied. The results and analysis show that when the inlet and the outlet are located in the middle of the first collecting main and the second collecting main, respectively; system can achieve best heat dissipation performance, the highest temperature decrease by 0.49 C, while the maximum temperature difference of system decreases by 0.52 C compared with typical Z-type BTMS under the discharge rate of 1 C. Then an optimization strategy is put forward to improve cooling efficiency compared with single-inlet and single-outlet symmetrical liquid cooling BTMS; the highest temperature of three-inlet and three-outlet is 27.98 C while the maximum temperature difference of three-inlet and three-outlet is 2.69 C, decrease by 0.7 and 0.67 C, respectively. K E Y W O R D Sflow path, heat dissipation performance, optimization strategy, parallel liquid cooling plate, thermal management system

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Transient modeling and validation of lithium ion battery pack with air cooled thermal management system for electric vehicles

Cited by 47 publications

References 19 publications

Research on heat dissipation performance and flow characteristics of air-cooled battery pack

Research on heat dissipation performance and flow characteristics of air-cooled battery pack

Design of Parallel Air-Cooled Battery Thermal Management System through Numerical Study

Heat dissipation analysis of different flow path for parallel liquid cooling battery thermal management system

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