For poor high-temperature performance of power battery utilized in electric vehicles, a battery thermal management system (BTMS) functioned as reducing battery’s temperature is indispensable. This work designs a serpentine-channel cold plate as cooling unit of fluid BTMS, and a parameterized U-tube representing a part of serpentine-channel in cold plate is created. A thermal resistance model, as well as an objection function f₁ based on it, is developed to characterize thermal performance of cold plate. This study using theories of friction loss and excess loss defines a pressure loss model of cold plate based on the parameterized U-tube. After a series of simulations performed on different U-tube with varying structural parameters, combining with pressure loss model, objective function of pressure loss f₂ is obtained. By calculating f₁ and f₂, the laws of thermal performance with pressure loss and the optimum structure of the serpentine-channel cold plate can be obtained. This work provides a simple way to design the structure of the fluid cold-plate BTMS with optimum thermal performance and minimum pressure loss.

对于电动汽车中使用的动力电池高温性能较差的情况，必不可少的电池热管理系统（BTMS）可以降低电池温度。这项工作设计了一个蛇形通道的冷板作为流体BTMS的冷却单元，并创建了一个参数化的U型管，它代表了冷板中蛇形通道的一部分。热阻模型以及反对函数f ₁基于此，可以表征冷板的热性能。这项研究使用摩擦损失和过度损失理论，基于参数化的U型管定义了冷板的压力损失模型。通过对具有不同结构参数的不同U型管进行一系列模拟，并结合压力损失模型，获得了压力损失f _2的目标函数。通过计算f ₁和f ₂，可以获得具有压力损失的热性能定律和蛇形通道冷板的最佳结构。这项工作为设计流体冷板BTMS的结构提供了一种简单的方法，该结构具有最佳的热性能和最小的压力损失。