【作者】 王向炜；

【导师】 潘双夏； 管成；

【作者基本信息】 浙江大学 ， 机械设计及理论， 2010， 硕士

【摘要】 混合动力液压挖掘机的特殊工况对能量存储装置及其管理系统提出了特殊的要求,本文针对混合动力液压挖掘机上的能量存储装置及其管理系统进行了研究,主要进展如下:1.通过挖掘机工况的分析以及各种能量存储单元的比较,选择了动力NIMH电池组作为5t并联式混合动力液压挖掘机的能量存储单元,并根据电压、功率、能量和寿命要求对NIMH电池组进行参数匹配研究。2.通过和项目组成员共同搭建的混合动力实验平台对NIMH电池组的基本特性进行测试和分析,着重分析了NIMH电池的迟滞电压现象,并在此基础上建立了电池的改进型RC等效电路模型。3.针对电流波动较大的工况,本文提出了一种以改进型RC模型和基于能量守恒SOC估算模型相结合的SOC估算模型,并利用sigma点卡尔曼率波算法进行实时计算,该方法能综合两者的优点,较好的适应挖掘机的多工作模式以及负载特性。同时,初步研究了电池SOH估算方法,并建立了其估算方法和步骤。4.以TMSLF2812 DSP芯片为基础设计了电池管理系统的硬件电路和软件系统,主要包括电池组集散式均衡电路、充电电流控制电路、控制板电路以及基于DSP/BIOS的软件系统。更多还原

【Abstract】 For the special working condition of hybrid hydraulic excavator, some special requirements were proposed for its energy storage device and management system, In this paper, the energy storage device and its management system centralized on the hybrid hydraulic excavator was researched, the major progress is as follows:1. According to analysis of excavator working condition and comparison of various energy storage unit, I selected the impetus NIMH battery as a energy storage unit for 5t parallel hybrid hydraulic excavator, then chose the parameter of NIMH battery through the requirements of voltage, power, energy, and life.2. Through a comprehensively experimental platform which built by our team, I carried out some tests and analysis of NIMH battery packs on the basic character of battery, then on this basis, established of an improved RC equivalent circuit model of battery..3. For fluctuating current conditions of battery in HHE , this paper presents a new SOC estimation model through the combination of improved RC model and the energy conservation SOC estimation model, which observed through sigma-point kalman filtering precisely, the model can be combination of the two priority points, and adapt well to the excavator’s multi-working-model and load characteristics. Besides, Researched the battery’s SOH estimation methods preliminarily, and established its estimation methods and steps.4. Designed the hardware circuitry and embedded software system of the battery management system based on the DSP chip TMSLF2812, mainly including equalizing control circuit for battery packs, charging current control circuit, electrical control board and software system on DSP / BIOS.更多还原