CAJ | 학술논문

针对以电池表面温度作为控制目标的常规热管理系统，存在散热滞后、电池内部温升过快以及在较高温升时输出功率受到限制的问题，设计了基于电池内部温度预测的主动散热式热管理系统。系统以测试的电池表面温度、电池材料参数和电池发热量作为输入量，预测电池内部的最高温度及其传热过程，对风机进行预控制，实现电池包温度的平稳控制。实验表明了系统能保证电池工作时温度变化平缓，处在最优温度范围内，避免了电池内部的累积生热量导致的电池温度急剧上升的问题，为混合动力汽车的电池热管理系统设计提供了参考。
침대이전지표면온도작위공제목표적상규열관리계통，존재산열체후、전지내부온승과쾌이급재교고온승시수출공솔수도한제적문제，설계료기우전지내부온도예측적주동산열식열관리계통。계통이측시적전지표면온도、전지재료삼수화전지발열량작위수입량，예측전지내부적최고온도급기전열과정，대풍궤진행예공제，실현전지포온도적평은공제。실험표명료계통능보증전지공작시온도변화평완，처재최우온도범위내，피면료전지내부적루적생열량도치적전지온도급극상승적문제，위혼합동력기차적전지열관리계통설계제공료삼고。
In view of the problems, such as delayed cooling, fast increasing inner temperature and the output power limit at high temperature, caused by ordinary battery thermal management system with surface temperature as control target, an active thermal management system based on predicting inner temperature of battery was designed. In this system, surface temperature, parameters of battery material and heat generation were used as the inputs to predict the highest inner temperature and the process of heat transfer. Based on the prediction, the fan could be pre-control ed, and the balanced control of battery temperature was realized. The experiments show that the system can make the battery's working temperature change stably and be maintained in the best temperature range, avoiding the problem of sharp temperature raise resulted from accumulated heat. The research provides the theoretical basis for the design of hybrid electric vehicle thermal management system.