汽车48V电源系统分析与设计(含CAD图,CATIA三维图)(任务书,开题报告,论文说明书30000字,CAD图纸5张,CATIA三维图)
摘要
随着世界汽车保有量的急剧增加，汽车对环境破坏的压力越来越大，很多国家提出了更严苛的排放法规，同时汽车新技术的快速发展和新电子设备的广泛运用使车载功率需求进一步提高，面对这些实际情况，电源系统电压的再一次升级势在必行。在20世纪90年代末，业内提出了一个将电源电压提升至42V的方案，即将三组12V铅酸蓄电池串联成为36V电池组，但进展受阻。在2011年，五家德国汽车制造商发布并采取了48V电源系统规范，此后许多整车厂和零部件厂商相继对汽车48V电源系统进行了研究和分析。48V汽车电源系统成为了世界的焦点。
本文主要研究内容分为以下几个方面：
1.研究汽车电源系统的发展历程。随着汽车技术的不断发展，汽车电源系统也在不断进步，电源系统电压从最开始的6V一步步升级为将来的48V，其中面临着许多挑战，国内外众多汽车整车厂商和零部件厂商都对48V电源系统进行了研究。
2.48V电源系统的构建。本文以某款混合动力汽车为对象，先确定了相关整车参数和48V电源系统蓄电池，电机，AC/DC转换器，DC/DC转换器，电压调节器等各部件的参数。然后构建了48V电源系统。
3.对搭载48V电源系统的轻型混合动力汽车的运行模式，制动能量管理策略，锂电池能量管理系统以及模糊能量管理策略进行了研究分析。
4.用Simulink建立了12V传统燃油汽车和48V电源系统的稳态系统模型，对不同转速和负载的工况进行仿真，从而对48V电源系统的进行了特性分析。
关键词：电源系统;48V;Sinmulink；轻型混合动力汽车；特性分析
Abstract
The numberof car ownership is increasing rapidly in the world, and the pressure on environmental damage is increasing.Many countries havesetupmorestrictemission regulations. At the same time, the rapid development of new technologies and the extensive use of new electronic equipment makes the vehicle power demand further improve, in the face of these actual situation, the upgradeofpower system voltage is imperative. In the late 1990s, the industry proposed a group of 12V lead-acid batteries in series into 36V battery pack to increase the power bus voltage to 42V program, but progress blocked. In 2011, five German car manufacturers released and adopted the 48V power system specifications, known as the LV148, since then many OEMs and parts manufacturers have been on the car 48V power system were studied and analyzed. 48V car power system has become the focus of the world.
The main contents of this paper are divided into the following aspects:
1. Study the development of automotive power system. With the continuous development of automotive technology, automotive power systems are also progressing, the power system voltage from the beginning of the 6V step by step upgrade to the future 48V, which faces many challenges, many domestic and foreign vehicle manufacturers and parts manufacturers are The 48V power supply system was studied.
2.48V power system construction. In this paper, a hybrid vehicle as the object, first determine the relevant vehicle parameters and 48V power supply system batteries, motors, AC / DC converters, DC / DC converters, voltage regulators and other components of the parameters. And then built a 48V power supply system.
3.The operation mode, the braking energy management strategy, the lithium battery energy management system and the fuzzy energy management strategy of the light hybrid electric vehicle equipped with the 48V power supply system are studied and analyzed.
4. Simulink was used to establish the steady-state system model of 12V traditional fuel vehicle and 48V power supply system. The performance of 48V power supply system was analyzed by simulating the different speed and load conditions.
Key words: power supply system; 48V; Sinmulink; light hybrid vehicle; characteristic analysis
目录
第1章绪论 1
1.1 课题研究背景和意义 1
1.1.1 汽车电源系统的的组成及作用 1
1.1.2 汽车电源系统的发展概述 1
1.1.3 选择48V电源系统的意义 2
1.2 汽车48V电源系统的国内外发展现状 4
1.2.1 汽车48V电源系统的国外发展现状 4
1.2.2 汽车电源系统的国内发展现状 6
1.3 论文主要研究内容 7
第2章 48V电源系统电路设计 8
2.1 汽车48V电源系统电气方案的选择 8
2.2 汽车48V电源系统主要部件的选型设计以及参数选取 10
2.2.1 汽车48V蓄电池的选型及参数的选取 10
2.2.2 锂电池包的设计 13
2.2.3 汽车48V电源系统电机相关参数的选取及工作特性分析 14
2.2.4 汽车48V电源系统其他组成部分的选型 16
2.3 本章小结 17
第3章 搭载48V电源系统汽车能量管理分析 18
3.1 48V电源系统汽车运行模式分析 18
3.2 汽车48V电源系统的制动能量回收系统分析 18
3.3 汽车48V电源系统电池管理系统分析 20
3.3.1 锂电池测量模型的建立 21
3.3.2 锂电池的SOC预估 22
3.4 轻型混合动力汽车模糊逻辑能量管理策略 22
3.5 本章小结 25
第4章 汽车48V电源系统建模、仿真及特性分析 27
4.1 MATLAB/Simulink软件及相关概念介绍 27
4.2 汽车12V电源系统稳态模型的建立 28
4.3 汽车12V电源系统稳态模型的特性分析 34
4.4 汽车48V电源系统稳态模型的建立 36
4.5 汽车48V电源系统稳态模型的特性分析 40
4.6 本章小结 41
第5章全文总结与工作展望 42
5.1 全文总结 42
5.2 工作展望 42
参考文献 44
附录 46
致 谢 47
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