汇流排产热影响下的电池模组冷却系统改进设计

doi:10.19562/j.chinasae.qcgc.2022.06.007

Abstract

Abstract:

In this paper， a reliable cell heat generation model is established by using Bernardi heat generation rate equation through simulation and experimental verification， and the simulation and experimental error is less than 2%. Based on this， the heat generation model of the module under the influence of the bus-bar heat generation is established. For improved design of the original cooling system for insufficient cooling effect on the top area of the module and the bus bar， for the cooling plate arrangement， it is proposed to install the cooling plate on the side of the module， and then to select the appropriate cooling plate thickness， cooling fluid volume concentration and the coolant inlet velocity through simulation analysis. In the final design， the average temperature rise of the bus-bar of the cooling system module， cell and top surface of the module is reduced by 15.56%， 11.48% and 20.34% respectively， and the temperature distribution on the cell of the module is more uniform.

Key words: square lithium-ion battery, Busbar, COMSOL Multiphysic, liquid cooling system

Yuming Peng,Mingxiao Yuan,Zhuoxin Jing,Yonglin Zhang,Gang Huang. Improved Design of Battery Module Cooling System Under the Influence of Busbar Heat Generation[J].Automotive Engineering, 2022, 44(6): 859-867.

Figures/Tables 27

名称

等效密度/（kg·m^-3）

等效比热容/

（J·kg^-1·K^-1）

导热系数/（W·m^-1·K^-1）

电阻率/（Ω·m）

正极（Al）

2 702.5

871.5

236.0

2.83 ×10^-8

负极（Cu）

8 935.0

381

398.0

1.75 ×10^-8

电芯内核

2 074.8

1 440

λ x

λ y

=2.738；

λ z

=0.925

尺寸/mm

材料

密度/（kg·m^-3）

比热容/（J·kg^-1·K^-1）

导热系数/（W·m^-1·K^-1）

电阻率/（Ω·m）

$287 × 48 × 3$

$134 × 48 × 3$

铝

2 702.5

871.5

236.0

2.83×10^-8

References 15

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Improved Design of Battery Module Cooling System Under the Influence of Busbar Heat Generation

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