Optimization Study on Thermal Management Performance of a Vehicle Power Battery Pack
Year: 2026
Type: conference-paper
Abstract: The thermal management system of the power battery pack is a core factor limiting the vehicle's power performance, cycle life, and safety performance. This paper focuses on a vehicle-specific power battery pack and establishes a complete three-dimensional thermal-fluid coupling simulation model based on computational fluid dynamics (CFD). The thermophysical parameters of the core materials in the battery pack were calibrated through experimental validation. Four typical vehicle operating conditions were set: high-speed climbing, high-speed overspeed, high-temperature fast charging, and driving durability. The thermal response characteristics of the battery pack under different operating conditions were systematically investigated. Optimizations were applied as follows: The cross-sectional area of the liquid cooling channels was increased by 15%; The coolant flow rate was adjusted from 8 L/min to 10 L/min; The heating temperature was increased from 38°C to 40°C; The thickness of the thermal conductive adhesive was adjusted from 0.4 mm to 0.6 mm; The thickness of the aerogel insulation layer was increased from 1.5 mm to 2.5 mm. The optimized simulation results demonstrate that under all operating conditions, the maximum cell temperature remains below 50°C, and the maximum temperature difference does not exceed 8°C, fully meeting the temperature control requirements for power batteries. This study provides essential theoretical foundation and data support for the subsequent mass-production design of the battery pack.
Institution: Guangzhou Songtian Polytechnic College
Language: English
Subfield: Automotive Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7204810052