【摘要】：環(huán)境的持續(xù)惡化和能源短缺等問題越來越迫使人們關(guān)注電動(dòng)汽車的發(fā)展。電動(dòng)汽車以其綠色環(huán)保的優(yōu)點(diǎn)逐步成為汽車行業(yè)的未來發(fā)展方向。電池管理系統(tǒng)是電動(dòng)汽車成為商業(yè)化產(chǎn)品中非常重要的一個(gè)環(huán)節(jié)。而磷酸鐵鋰電池憑借其其高能量密度，高功率密度等優(yōu)點(diǎn)被廣泛作為電動(dòng)汽車的動(dòng)力電池。由于電壓和功率的限制，通常要將電池進(jìn)行串并聯(lián)以滿足電動(dòng)汽車的需求。但是電池個(gè)體的特性差異會(huì)嚴(yán)重影響到整組電池的性能。 磷酸鐵鋰電池的特性與其所處的環(huán)境溫度有著密切的聯(lián)系。電池的容量，內(nèi)阻，開路電壓，極化電容等均是反映電池內(nèi)部狀態(tài)的重要參數(shù)。本文著重進(jìn)行了不同環(huán)境溫度下電池組的特性實(shí)驗(yàn)，研究不同環(huán)境溫度對(duì)電池相關(guān)參數(shù)的影響。 針對(duì)里程延長(zhǎng)式電動(dòng)轎車的結(jié)構(gòu)，設(shè)計(jì)了一套集成式電池管理系統(tǒng)。采用主從式結(jié)構(gòu)，詳細(xì)介紹了從控模塊的硬件原理電路設(shè)計(jì)，包括單體電壓采集、溫度采集、CAN總線通訊電路等。其次介紹了針對(duì)主控模塊的μC/OS-II操作系統(tǒng)移植，和基于操作系統(tǒng)的各功能模塊的軟件設(shè)計(jì)，包括SAE J1939協(xié)議棧的設(shè)計(jì)與實(shí)現(xiàn)，數(shù)據(jù)存儲(chǔ)程序等。最后介紹基于LABVIEW的上位機(jī)軟件的設(shè)計(jì)。 在電池管理系統(tǒng)軟硬件設(shè)計(jì)的基礎(chǔ)上，，對(duì)設(shè)計(jì)的電池管理系統(tǒng)進(jìn)行平臺(tái)實(shí)驗(yàn)測(cè)試。在實(shí)車運(yùn)行中進(jìn)行穩(wěn)定性測(cè)試并對(duì)動(dòng)力電池組電壓，溫度等參數(shù)的測(cè)量精度進(jìn)行測(cè)試，實(shí)驗(yàn)表明本文設(shè)計(jì)的電池管理系統(tǒng)具有較好的穩(wěn)定性和測(cè)量精度。
[Abstract]:The continuous deterioration of the environment and energy shortage force people to pay more and more attention to the development of electric vehicles. Electric vehicle has gradually become the future development direction of automobile industry because of its advantages of green environmental protection. Battery management system is a very important link for electric vehicles to become commercial products. Lithium iron phosphate battery is widely used as the power battery of electric vehicle because of its high energy density, high power density and so on. Due to the limitation of voltage and power, the battery is usually series-parallel to meet the needs of electric vehicles. However, the individual characteristics of the battery will seriously affect the performance of the whole group of batteries. The characteristics of lithium iron phosphate battery are closely related to the ambient temperature. The capacity, internal resistance, open circuit voltage and polarization capacitance of the battery are all important parameters to reflect the internal state of the battery. In this paper, the characteristics of battery packs at different ambient temperatures were studied, and the effects of different ambient temperatures on the related parameters of batteries were studied. According to the structure of mileage extended electric car, an integrated battery management system is designed. Using master-slave structure, the hardware principle circuit design of slave control module is introduced in detail, including single voltage acquisition, temperature acquisition, CAN bus communication circuit and so on. Secondly, the 渭 C/OS-II operating system transplantation for the main control module and the software design of each functional module based on the operating system are introduced, including the design and implementation of SAE J1939 protocol stack, data storage program and so on. Finally, the design of upper computer software based on LABVIEW is introduced. On the basis of the software and hardware design of the battery management system, the platform experiment test of the designed battery management system is carried out. The stability test is carried out in the real vehicle operation and the measurement accuracy of the voltage and temperature of the power battery pack is tested. the experimental results show that the battery management system designed in this paper has good stability and measurement accuracy.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM912

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