Welcome to Journal of Automotive Safety and Energy,

Journal of Automotive Safety and Energy ›› 2026, Vol. 17 ›› Issue (4): 485-493.DOI: 10.3969/j.issn.1674-8484.2026.04.007

• Automotive Energy Efficiency and Environment Protection • Previous Articles     Next Articles

Experimental study on a wide-temperature-range lithium-ion battery thermal management system based on thermoelectric devices-coupled forced air-cooled

LIN Mingtong(), WANG Qi, LIU Qiang, LIN Shanshan, ZHAO Yujie, YU Yang*()   

  1. School of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
  • Received:2026-04-13 Revised:2026-06-19 Online:2026-08-30 Published:2026-09-01

Abstract:

Conventional air cooling has limited heat dissipation capacity in hot summer environments and struggles to meet the heating needs of batteries in cold winter conditions. To address this issue, a battery thermal management system (BTMS) coupled with circulating air flow and thermoelectric devices (TEDs) was proposed. The circulating air flow inside the battery pack facilitated heat exchange between the batteries and the TEDs, and reversing the current direction of the TEDs enables flexible switching between heating and cooling modes. An experimental test bench was established to investigate the effects of ambient temperature, TED operating voltage, and battery discharge conditions on the thermal management performance. The results show that at an ambient temperature of -20 ℃, when heating the battery pack to 15 ℃ with a TED voltage of 6 V, the average temperature rise rate is 1.41 ℃ / min and the maximum temperature difference is 4.5 ℃. During 3 C-rate discharge at 40 ℃, the maximum temperature and maximum temperature difference of the battery pack are 45 ℃ and 4.3 ℃, respectively, representing reductions of 25% and 39.44% compared with the case without TED cooling (60 ℃ and 7.1 ℃, respectively). This study provides a feasible technical solution and experimental basis for battery thermal management over a wide temperature range.

Key words: thermoelectric devices (TEDs), battery thermal management system (BTMS), lithium-ion battery, circulating airflow, wide-temperature-range thermal control

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