Abstract
Battery pack is the power source of electric vehicles, and its performance determines the safety and lifespan of
the electric vehicles. Effective thermal management systems play a vital role in the safe operation of battery packs. Based on
the theory of numerical heat transfer, this work develops a thermal-flow-electrical coupling model of a battery pack liquid
cooling system. It comprehensively analyzes the flow and temperature field distributions of the battery pack liquid cooling
plate under 0.5 C and 1.0 C operating conditions. Results show obvious flow resistance at the inlet and outlet, causing the
pressure difference between the inlet and outlet of the liquid cooling plate to be as high as 11.82 kPa, which significantly
increases pump power. The temperature distribution of the liquid cooling plate shows obvious non-uniformity, and the nonuniformity increases from 3.16 °C to 5.57 °C under steady-state operating conditions with the discharge rate increasing from
0.5 C to 1.0 C. In addition, this work also considers the temperature variation of the battery pack under transient conditions.
This study can provide a reference for the optimization design of battery pack thermal management systems.
| Translated title of the contribution | Thermal Management Analysis of Lithium Battery Pack |
|---|---|
| Original language | Chinese (Simplified) |
| Pages (from-to) | 499-505 |
| Journal | 新能源进展 |
| Volume | 11 |
| Issue number | 6 |
| Publication status | Published - Dec 2023 |
Research Keywords
- 电池包
- 液冷散热器
- 数值模拟
- 热管理
- battery pack
- liquid cooling radiator
- numerical simulation
- thermal management