Thermal characteristics of power battery pack with liquid-based thermal management

Jinwei, Liu; Li, Hao; Li, Wangyong; Shi, Junye; Wang, Huihui; Chen, Jiangping

doi:10.1016/j.applthermaleng.2019.114421

Cited by 86 publications

(26 citation statements)

References 23 publications

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“…1 However, the performance of LIB can be negatively affected by the overheating problem due to the internal chemical reactions and resistances, and there is even possibility for ignition and explosion under harsh conditions. 2 An effective way to avoid the above risks is to maintain a favorable thermal condition for LIB. Literatures note that the temperature of LIB should be controlled within the range of 20 C to 40 C, while the maximum temperature difference should be kept below 5 C. 3,4 Applying battery thermal management system (BTMS) on battery packs is the current solution for the maintenance of the thermal state of LIB.…”

Section: Discussionmentioning

confidence: 99%

“…With regard to power supply for the NEV, lithium‐ion battery (LIB) is extensively chosen by automobile manufactures because of high energy density, long cycle life and favorable weight . However, the performance of LIB can be negatively affected by the overheating problem due to the internal chemical reactions and resistances, and there is even possibility for ignition and explosion under harsh conditions . An effective way to avoid the above risks is to maintain a favorable thermal condition for LIB.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study on thermal performance of a pumped two‐phase battery thermal management system

2020

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Summary Battery thermal management system (BTMS) is of great significance to keep battery of new energy vehicle (NEV) within favorable thermal state, which attracts extensively attention from researchers and automobile manufacturers. As one BTMS scheme, pumped two‐phase system displays excellent cooling capacity owing to large amount of latent heat usage, while there is limited research efforts focusing on the feasibility of the BTMS scheme. This paper experimentally investigates thermal performance of a pumped two‐phase BTMS heated by a dummy battery with relative high heat fluxes. The effects of heat fluxes, flow rates and cold source temperatures on thermal performance have been studied and conclusions have been drawn accordingly. The results show that the thermal performance of the system is generally enhanced with the increase of the refrigerant flow rates. When the heat flux and cold source temperature are 0.11 W/cm2 and 10°C, respectively, tavg and △tmax are decreased by 3.4°C and 0.5°C, respectively, when the refrigerant flow rate is increased from 0.20 to 1.67 L/min. Meanwhile, heat transfer coefficient is also improved with an increase of the flow rates, while the enhancements become less obvious under high heat flux. In addition, the tavg and △tmax of cold plate surface are increased when the heat flux is elevated, while the tavg at the low flow rate is increased slightly. However, the increase of △tmax is more obvious at the low flow rate, compared to that at high flow rate. When the heat flux is increased from 0.11 to 0.60 W/cm2, tavg is increased by 3.8°C under the flow rate of 0.2 L/min, while that at the flow rate of 1.67 L/min is almost doubled. Meanwhile, the heat transfer coefficient is increased monotonously at the low flow rate, while that at the high flow rate is first decreased and then increased. Besides, lower surface temperatures can be obtained with low cold source temperatures. However, cold source temperatures affect temperature uniformity less.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental study on thermal performance of a pumped two‐phase battery thermal management system

2020

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“…Typical liquid cooling systems include pumps, cooling plates, radiators and other accessories, and water/glycol is the most popular cooling medium. Liquid coolant can be circulated through pipes within the system, and the convective heat transfer between the liquid and the system components is the main cooling mechanism 43 . Yang et al 44 studied the impact of flow path on a parallel liquid cooling TMS, analyzed the heat dissipation performance under different discharge currents, and proposed an optimization strategy to improve the cooling efficiency for the TMS.…”

Section: Battery Thermal Management Systemmentioning

confidence: 99%

A comprehensive review on inconsistency and equalization technology of lithium‐ion battery for electric vehicles

et al. 2020

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The rapid growth of transportation demand has been enlarged strongly which has promoted electric vehicles powered by lithium-ion batteries. However, the inconsistencies within the battery pack will deteriorate over the lifecycle and affect the performance of electric vehicles. Therefore, various thermal management systems and equalization systems have been applied in battery management system to deal with the inconsistencies, extend battery service life, and improve safety performance. This review summarizes the origination of inconsistency within lithium-ion batteries from production to usage process, and then introduces the classification methods and application scenarios of the balance management system in detail. Based on the circuit topology, equalization systems can be classified into passive and active topologies. Active topologies

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“…Also, it is important to provide small temperature differences between batteries in a battery pack and the difference between each battery temperature in a battery pack should be under 5°C 4 . In the literature, five different battery cooling methods/strategies which are air cooling, 5‐14 liquid cooling, 15‐24 phase change material cooling/heat pipe cooling 25‐32 and thermoelectric cooling 33,34 are generally presented in order to keep battery temperature in the optimum range 35‐37 . Among these methods, air cooling method is commonly used in electric vehicles for thermal management of batteries because of its simple structure, light weight, easy maintenance, and low cost but it has disadvantages such as low specific capacity of air, low heat transfer rate, nonuniform temperature distribution, low efficiency 38,39 .…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on the usage of finned surface in lithium nickel manganese cobalt oxides batteries by using air cooling method

Çelen

Kalkan

2020

Energy Storage

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In this study, a numerical thermal analysis of a lithium nickel manganese cobalt oxide prismatic battery having nominal voltage of 3.7 V and capacity of 26 Ah was performed during air cooling conditions. The effects of discharge rate (in the range of 3C-5C) and air velocity (in the range of 1-3 m s −1) on average battery temperature, maximum battery temperature, and total heat transfer rate are investigated for both flat and finned cooling surfaces. The results showed that air cooling by means of flat cooling surface is only sufficient for low discharge rate and it is necessary to use finned surfaces in order to keep battery temperature in desired operation temperature range for high discharge rate conditions. Analysis results showed that average battery temperature is reduced up to 29%, 32%, and 30% by increasing air velocity for discharge rates of 3C, 4C, and 5C with the usage of flat surface, respectively. In addition, it was seen that the average and maximum battery temperatures are reduced up to 7.9 and 8.6 K with the usage of finned cooling surface instead of flat one. The heat removed from the battery is increased 8.7 W by using finned surface at the maximum air velocity of 3 m s −1 .

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Thermal characteristics of power battery pack with liquid-based thermal management

Cited by 86 publications

References 23 publications

Experimental study on thermal performance of a pumped two‐phase battery thermal management system

Experimental study on thermal performance of a pumped two‐phase battery thermal management system

A comprehensive review on inconsistency and equalization technology of lithium‐ion battery for electric vehicles

Numerical investigation on the usage of finned surface in lithium nickel manganese cobalt oxides batteries by using air cooling method

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