【摘要】：目前,蓄電池是作為人們使用清潔能源的重要工具,已經(jīng)得到了廣泛應用,隨之蓄電池的種類也越來越復雜,作為蓄電池重要充電工具的傳統(tǒng)充電機也面臨著很大挑戰(zhàn),而擁有適應不同蓄電池組、完善的故障保護功能、無人值守充電、遠程修改充電參數(shù)等功能的智能充電機需求迫切。本文旨在設計實現(xiàn)一種結合數(shù)字控制技術與高頻開關技術的智能充電機電路系統(tǒng),克服傳統(tǒng)充電機故障保護功能不完善、能效比低、人工值守充電等弱點。首先,根據(jù)論文研究背景提出智能充電機的設計參數(shù)和功能指標;其次,確定了整機系統(tǒng)電磁兼容及硬件電路設計方案,分析副邊串聯(lián)型雙管正激式隔離DC/DC拓撲的工作原理,選用TI公司的TMS320F2812型DSP來實現(xiàn)數(shù)字控制系統(tǒng);再次,對整機的電磁兼容需求和干擾源作詳細分析,提出并設計電磁兼容(Electromagnetic Compatibility,EMC)的解決方法;然后,對整機所有硬件電路進行了設計,以及對重要功率器件的參數(shù)選型作了詳細闡述;最后,在完成的樣機平臺上進行波形分析、功能測試、效率測試、電磁兼容測試等,最終驗證整機方案的可行性,并滿足預期設計功能和參數(shù)指標。本文完成智能充電機硬件電路設計和實現(xiàn),根據(jù)最終制智能充電機樣機的測試結果,系統(tǒng)最大效率為89%;輸出電壓和電流精度分別為0.5%和1%;通過CAN或RS-485通信,實現(xiàn)遠程充電參數(shù)修改、充電曲線繪制、故障記錄等功能;完善的保護功能可以實現(xiàn)完全無人值守充電;通過了電磁兼容殘酷實驗測試,驗證整機的可靠性及穩(wěn)定性。
[Abstract]:At present, battery is an important tool for people to use clean energy, and has been widely used. With the variety of batteries is becoming more and more complex, the traditional charger, which is an important charging tool for batteries, is also facing great challenges. The intelligent charger with the functions of different battery sets, perfect fault protection, unattended charging and remote modification of charging parameters is in urgent need. The purpose of this paper is to design and implement an intelligent charging electromechanical circuit system which combines digital control technology with high frequency switch technology. It overcomes the shortcomings of traditional charging machine such as imperfect fault protection function, low energy efficiency ratio and manual charge on duty. Firstly, according to the research background of the paper, the design parameters and function index of intelligent charger are put forward. Secondly, the design scheme of electromagnetic compatibility and hardware circuit of the whole machine system is determined, and the working principle of the secondary side series double transistor forward isolation DC/DC topology is analyzed, and the TMS320F2812 DSP of TI Company is selected to realize the digital control system. Thirdly, the electromagnetic compatibility requirement and interference source of the whole machine are analyzed in detail, and the solution of electromagnetic compatibility (Electromagnetic Compatibility,EMC) is proposed and designed. Then, all the hardware circuits of the whole machine are designed, and the parameter selection of important power devices is described in detail. Finally, waveform analysis, function test, efficiency test, electromagnetic compatibility test and so on are carried out on the completed prototype platform. Finally, the feasibility of the whole machine scheme is verified, and the expected design function and parameters are satisfied. The hardware circuit of intelligent charger is designed and realized in this paper. According to the test results of the prototype of intelligent charger, the maximum efficiency of the system is 89, the precision of output voltage and current are 0.5% and 1%, respectively. Through CAN or RS-485 communication, remote charging parameters modification, charging curve drawing, fault recording and other functions can be realized, and the perfect protection function can realize completely unattended charging. The reliability and stability of the whole machine are verified by the cruel test of EMC.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM910.6

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本文編號：2350272