风冷气泵热管复合冷却技术在储能电站中的应用  

Application of air cooled gas pump heat pipe compound cooling technology in energy storage power station

作　　者：刘晴晴 王飞 王宁波 邵双全 LIU Qingqing;WANG Fei;WANG Ningbo;SHAO Shuangquan(School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;GS(Ningbo)ESS Technology Co.Ltd.,Ningbo 315609,Zhejiang,China)

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074 [2]钧能(宁波)电源科技有限公司,浙江宁波315609

出　　处：《西安工程大学学报》2024年第5期102-108,共7页Journal of Xi’an Polytechnic University

基　　金：国家自然科学基金(52076085)。

摘　　要：现有储能电站采用传统蒸汽压缩制冷,自然冷源利用率亟待提升,引入气泵热管技术可改善这一问题。依据风冷储能电池柜温控指标,设计20 kW风冷气泵热管复合空调样机进行实验。测试方法采取焓差法,控制室外干球温度-5~35℃,记录100%负荷下样机制冷量、消耗功率等数据,结果表明:①锂电池在15~35℃工作最佳,在充/放电过程中,电芯温差过大会造成串联容量失配、并联电路电池间/簇充电充不满、放电放不尽的现象;②传统电池柜未进行冷/热通道隔离,存在一定的气流掺混,需要控制储能电池柜风冷空调回风温度(25±1)℃;③在相同冷凝器、蒸发器配置下,室外35℃工况时传统风冷空调与气泵热管复合空调系统能效比(energy efficiency ratio,EER)均为2.21,当室外10℃工况时,传统风冷空调EER为3.81,气泵热管复合空调EER为5.63,具备较好的节能潜力;④气泵热管复合空调技术简单、可靠,具有很好的节能优势。在室外全工况下,传统风冷空调全年能效比(annual energy efficiency ratio,AEER)为3.31,而气泵热管复合空调AEER为4.04。Existing energy storage plants currently employ traditional steam compression refrigeration,and the utilization ratio of natural cold sources requires enhancement.The introduction of air pump heat pipe technology can remedy this problem.According to the temperature control indicators of the air-cooled energy storage battery cabinet,the 20 kW air-cooled gas pump heat pipe composite air condition prototype was designed and the experimental study on the prototype performance was conducted.The testing methodology utilizes the enthalpy difference method,with the outdoor dry-bulb temperature controlled between-5℃and 35℃.Data pertaining to the cooling capacity and power consumption of the prototype at 100%load are meticulously recorded for analysis.The results show:①lithium batteries work best in the range of 15~35℃,and during the charging/discharging process,excessive temperature difference between battery cells can cause series capacity mismatch,insufficient charging between parallel circuit batteries/clusters,and incomplete discharge;②it is necessary to control the return air temperature of the air-cooled air condition in the energy storage battery cabinet to(25±1)℃;③under the same condenser and evaporator configuration,the energy efficiency ratio(EER)of traditional air-cooled air condition and gas pump heat pipe composite air condition is both 2.21 under outdoor operating conditions of 35℃,with the EER reaching 3.81 under outdoor operating conditions of 10℃,5.63 under air pump heat pipe composite air condition,indicating good energy-saving potential;and④the tested technology is simple,reliable,and has good energy-saving advantages.Under all outdoor operating conditions,the annual energy efficiency ratio(AEER)of traditional air-cooled air condition is 3.31,while the AEER of air pump heat pipe composite air condition is 4.04.

关 键 词：气泵 电池储能 温控 全年能效比 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]