| 摘要: |
| 动力电池的寿命及可靠性对整车的安全性至关重要，基于液冷冷却方式，本文设计并研制了一套动力电池简易热管理机组，通过软件仿真、实验室测试及装车测试证实了方案的可行性。研究表明：通过抽取大巴的空调风及环境风分别在夏季及春秋两季对低温换热器中的防冻液进行冷却，能够较好的匹配动力电池在不同环境下对制冷能力的要求；在实验室及装车两种情况下，机组在设计工况下的制冷量均大于2.5 kW；机组采用PTC制热时，实际功率与设定功率之间的误差在2%以内；机组装车后，引风管长度小于2 m，风管90°弯的数量小于2个时，机组换热量仍然满足设计要求；在实验数据与模拟数据误差为15%的条件下，采用Dymola软件对机组进风口的导流板进行优化，得到导流板的角度为73°时能够使进风口的风均匀分布于低温换热器表面。 |
| 关键词: 热管理 动力电池 液冷冷却 实验研究 |
| DOI： |
| 投稿时间：2018-07-20 修订日期：2018-09-20
|
| 基金项目: |
|
| Research on Simple Heat Management System of Power Battery |
| He Xian,Wang Yangping,Qian Cheng,Su Jian,Hu Jing |
| (Dun An Automotive Thermal Management Technology Co., Ltd.;Zhengjiang Dunan Electro-Mechanical Technology Co., Ltd.) |
| Abstract: |
| The working life and reliability of power battery is very important to the electric vehicle. Based on the way of liquid cooling, a set of simple of heat management unit for power battery is designed and developed, and the feasibility of the scheme is confirmed by software simulation, laboratory test and vehicle loading test. The study shows that the air-conditioning wind and environmental wind of the bus can be cooled to the cryogenic heat exchanger in summer and the two quarter of spring and autumn, which can match the requirements of the power battery to the refrigeration capacity in different environments. Under the two conditions of laboratory and vehicle loading, the refrigerating capacity of the unit under the design condition is more than 2.5 kW, and the error between the actual power and the set power is less than 2% when the unit is heated by PTC. When the unit is loaded, the length of the intake tube is less than 2 m and the number of the 90°bend of the wind pipe is less than 2, the heat exchange still satisfies the design requirements. The guide plate of the inlet air is also optimized, the air inlet can be evenly distributed on the surface of the low temperature heat exchanger when the angle of the guide plate is 73°. |
| Key words: thermal management power battery liquid cooling experimental research |
