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Related Experiment Video

Updated: Jul 9, 2025

Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption
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Cavity structure-based active controllable thermal switch for battery thermal management.

Xingzao Wang1,2, Zhechen Guo1,2, Jun Xu1,2

  • 1State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.

Iscience
|December 6, 2023
PubMed
Summary

This study introduces an active controllable thermal switch to improve battery performance in extreme temperatures. The device enhances battery usability by managing heat preservation and cooling, reducing energy consumption.

Keywords:
Applied sciencesEnergy managementEnergy storage;

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Area of Science:

  • Materials Science
  • Thermal Engineering
  • Battery Technology

Background:

  • Batteries degrade rapidly at extreme temperatures, challenging thermal management.
  • Meeting simultaneous low-temperature heat preservation and high-temperature cooling is difficult.

Purpose of the Study:

  • To develop an active controllable thermal switch for enhanced battery performance in extreme environments.
  • To investigate a cavity structure-based thermal switch for active thermal resistance control.

Main Methods:

  • Design and implementation of a cavity structure-based active controllable thermal switch.
  • Experimental evaluation of the thermal switch's performance, including switch ratio (SR) and thermal resistance control.
  • Testing battery thermal management under various temperature conditions using the switch's ON and OFF states.

Main Results:

  • The proposed thermal switch demonstrated a potential switch ratio (SR) of approximately 300 and an experimental SR of 15.4.
  • Active control over thermal resistance was achieved, with the "OFF State" optimizing energy discharge at low temperatures.
  • Pre-heating in the "OFF State" consumed only 60% of the energy required in the "ON State".

Conclusions:

  • The active controllable thermal switch significantly enhances battery usability in extreme temperature environments.
  • The "ON State" maintained battery temperature below 35°C at 20°C ambient temperature.
  • The "ON + State" ensured maximum battery temperature remained below 42°C under extreme conditions.