锂离子电池滴落接触式主动冷却装置的流量控制系统设计  

Design of Flow Control System for Active Cooling Device with Dripping Contact Type of Lithium Ion Battery

作　　者：廖新锋 查云飞 李周达 LIAO Xinfeng;ZHA Yunfei;LI Zhouda(School of Mechanical and Automotive Engineering,Fujian University of Technology,Fuzhou 350118,China;Fujian Provincial Key Laboratory of Automotive Electronics and Electric Drive Technology,Fuzhou 350118,China)

机构地区：[1]福建理工大学机械与汽车工程学院,福州350118 [2]福建省汽车电子与电驱动技术重点实验室,福州350118

出　　处：《机电技术》2025年第1期63-68,共6页Mechanical & Electrical Technology

摘　　要：液体滴落接触式冷却方法在对电池模组散热和温度一致性上表现优异,能够有效地将电池温度与温差保持在合理范围内。为了让滴落接触式冷却系统有更好的热管理表现,增加对冷却系统的流量控制是一个有效的方法。文章以18650型锂离子电池为研究对象,设计了一款带有流量控制系统的滴落接触式主动冷却装置,从控制准确性的角度出发,选择了合适的驱动泵体及控制模块,并建立稳定的温度信号反馈回路。设计了分级流量控制策略,并通过试验平台验证了整套系统装置的有效性。试验结果表明:流量控制系统能够准确地按照电池模组温度进行对应的流量控制,实现温度高流量高,温度低流量低的效果;电池模组在具有流量控制的冷却系统下,以1.5 C的放电倍率持续放电仍然能够将最高温度保持在40℃安全温度以下。The liquid droplet contact cooling method demonstrates excellent performance in heat dissipation and temperature consistency for battery modules,effectively maintaining the battery temperature and temperature difference within a reasonable range.To enhance the thermal management performance of the droplet contact cooling system,adding flow control to the cooling system is an effective approach.The article focuses on 18650-type lithium-ion batteries and designs a droplet contact cooling sys-tem with a flow control mechanism.From the perspective of control accuracy,appropriate drive pumps and control modules were selected,and a stable temperature signal feedback loop was established.A tiered flow control strategy was designed and the entire system's effectiveness was verified through an experimental platform.The experimental results show that the flow control system can accurately adjust the flow rate according to the temperature of the battery module,achieving higher flow rates at higher temper-atures and lower flow rates at lower temperatures.Under the cooling system with flow control,the battery module can maintain its maximum temperature below 40℃,which is a safe temperature,even when discharging continuously at a 1.5 C discharge rate.

关 键 词：18650电池 滴落接触式 液冷 流量控制 系统试验 

分 类 号：TM91[电气工程—电力电子与电力传动] U469.72[机械工程—车辆工程]