本文選題：鋰離子電池　切入點：PTC加熱　出處：《中北大學》2017年碩士論文

【摘要】：隨著全球能源危機以及大氣污染等問題的日益加劇,純電動汽車逐漸受到人們的青睞。鋰離子電池作為純電動汽車的動力來源,鋰離子的特性受到外界溫度的影響很大,進而導致在低溫環(huán)境下給純電動汽車充電會使電池的容量急劇衰減,內阻持續(xù)增大,嚴重時析出的鋰金屬會穿破電池正負極之間的隔膜,導致電池內部出現(xiàn)短路,甚至引起電池的燃燒、爆炸等問題。因此,設計一種基于低溫下鋰電池充電管理系統(tǒng),成為發(fā)展純電動汽車急需解決的問題。本課題在參照了國內外各種低溫下鋰離子電池加熱技術的基礎上,采用了PTC加熱法,同時本課題設計的系統(tǒng)可以分為主機控制器和從機控制器兩部分。其中,主機控制器承擔采集CC信號、充電環(huán)路互鎖信號和接收各從機控制器采集到的電池包內每個單體的電壓和溫度信息,并經(jīng)過運算處理向車載充電機發(fā)送加熱或充電請求,車載充電機響應請求,控制PTC板加熱電池包或對電池包進行充電,直至充電完成。各從機控制器實時檢測電池包內每個單體的電壓和溫度信息,并通過CAN總線與主機控制器實現(xiàn)實時數(shù)據(jù)交互和控制。本系統(tǒng)中主機控制器采用摩托羅拉(MC9S12XEP100)微處理器作為控制芯片,從機控制器采用摩托羅拉(MC9S08DZ60)單片機作為控制核心,通過實驗驗證表明該系統(tǒng)能夠通過CAN總線有效地將從機控制器采集到的電壓、溫度數(shù)據(jù)傳輸?shù)街鳈C控制器,主機控制器將這些數(shù)據(jù)處理后向車載充電機發(fā)出控制指令,車載充電機準確地做出應答進入低溫加熱模式或充電模式,本課題達到了設計的預期目的,其設計是合理可行的。
[Abstract]:With the increasing global energy crisis and air pollution, pure electric vehicles (EV) are becoming more and more popular. As the power source of pure electric vehicles, the characteristics of lithium ions are greatly affected by the external temperature. In turn, charging the pure electric vehicle at low temperature will cause the capacity of the battery to decline sharply, and the internal resistance will continue to increase. In severe cases, the lithium metal released will break through the diaphragm between the positive and negative electrodes of the battery, resulting in a short circuit inside the battery. Even cause battery burning, explosion and so on. Therefore, design a lithium battery charge management system based on low temperature, It has become an urgent problem to develop pure electric vehicle. Based on the reference of various low temperature lithium ion battery heating technology at home and abroad, the PTC heating method is adopted. At the same time, the system can be divided into two parts: host controller and slave controller. The charging loop interlocking signal and receiving the voltage and temperature information of each cell in the battery packet collected by the slave controller, and sending the heating or charging request to the on-board charger through operation, the on-board charger responds to the request. Control the PTC board to heat the battery pack or charge the battery pack until the charge is completed. The slave controller can detect the voltage and temperature information of each cell in the battery pack in real time. In this system, Motorola MC9S12XEP100) microprocessor is used as the control chip, and the slave controller adopts Motorola MC9S08DZ60) as the control core. The experimental results show that the system can effectively transmit the voltage and temperature data collected from the controller to the host controller through the CAN bus, and the host controller sends out the control instructions to the on-board charger after processing these data. The on-board charger can respond accurately and enter the low temperature heating mode or charging mode. This project achieves the expected purpose of the design and its design is reasonable and feasible.
【學位授予單位】：中北大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM912;U469.72

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