车用动力锂电池的一致性评价及控制策略开发开题报告

全文总字数：13156字

1. 研究目的与意义（文献综述）

1.1 backgroundand significance of the research

according to statistics: in2016, the total emissions of four pollutants from motor vehicles throughout thecountry were about 35.889 million tons, which seriously affected people'sproduction and living conditions. the state has formulated a series of policiesin this regard. among them is the issue of automobile exhaust emission control ^[1].with the increasingly serious environmental pollution, more and more peoplechoose electric vehicles. the state also provided corresponding policy support.for electric vehicles, batteries have always been a hot research object, amongwhich lithium-ion batteries have attracted widespread attention due to theirmany advantages. due to different reaction principles and materials, comparedwith other batteries, lithium-ion batteries have the advantages of largecapacity, high specific energy, high specific power, long life, no pollution,and high safety and reliability. unlike low-power electronic products, electricvehicles often require dozens or hundreds of single cells to be powered byseries, parallel, and series-parallel combination. the performance of theoverall battery pack is slightly lower than that of the single battery, whichaffects the life of the battery pack, the size of the charge and dischargecapacity, and safety and reliability. this requires screening tests on thesingle cells to ensure that the parameter consistency of each single cell iswithin a reasonable range, and then connecting the batteries in series andparallel in a predetermined manner to monitor the system in real time to ensurethat the parameters are within the normal range. therefore, research on theconsistency of vehicle battery packs can understand the performance and workingstatus of battery packs, and it is also instructive for solving problems thatmay occur in actual operation ^[2-4]. against this background and thearrangement of the school, the research on this subject was carried out-theconsistency of the power lithium battery for vehicles and the development ofcontrol measurement.

1.2 development status at home and abroad

2. 研究的基本内容与方案

based on theworking principle and charging and discharging characteristics of power lithiumbatteries for vehicles, this paper analyzes and evaluates the regularity of theimpact of lithium battery consistency on its operating characteristics, andanalyzes the factors that cause lithium battery inconsistencies in detail.control strategy for monitoring the consistency, and optimization measures forbattery consistency.

the main content of this article is intended to bedivided into the following five parts:

(1) explain thebackground and significance of the research in this article, and explain thedevelopment status of domestic and foreign automotive power lithium batteries,and introduce the research topics.

3. 研究计划与安排

1-2 (18-19 weeks of 7 semesters): determine graduationproject topics, improve graduation project assignments (relevant parameters),and collect data inside and outside the school;

3-4 (semester 1-2 of 8 semesters): scheme idea,literature search, and completion report;

5 (the third week of 8 semesters): data collection,foreign language translation;

4. 参考文献（12篇以上）

[1]孙帅. 车用锂离子电池组的一致性与容量估计研究[d].青岛科技大学,2019.

[2]郑岳久. 车用锂离子动力电池组的一致性研究[d].清华大学,2014.

[3]李杰. 纯电动汽车电池均衡管理系统设计与研究[d].太原理工大学,2018.