本文針對串聯電池組提出一種具有零電流切換之充放電平衡電路架構。此架構不僅具有平衡放電機制,也可搭配脈衝式、ReflexTM、Motorola充電法實現平衡充電的功能。整體電路由四顆切換開關與一組諧振槽所構成,藉由開關的切換,將具有較高電壓電池的能量儲存至諧振槽,再由諧振槽將能量傳輸給低電壓電池充電,同時利用諧振的特性來達到零電流切換的效果,以提升電路之效率。 為了達到簡化控制電路,以及提供彈性的調整,本文採用德州儀器出產之數位訊號處理器DSP28035作為控制電路的核心,控制切換開關的動作,以實現串聯電池組不論於充電狀態或是放電狀態中各電池的電壓平衡。 本文以兩顆台茂生產之NP2V4AH鉛酸電池為實驗用之串聯電池組,藉以驗證具零電流切換之電壓平衡電路的動作原理與工作模式。經由實驗結果,驗證本論文所實現之零電流切換充電平衡電路的可行性與功能。
The subject of this thesis is mainly related to charging equalization circuit with ZCS for series-connected batteries. This circuit can perform discharging and charging balance with Pulse, ReflexTM and Motorola method in series-connected batteries. The circuit is composed of four active switches and a resonant tank. to transfer energy from the higher voltage battery to resonant tank, and then transfer energy from the resonant tank to the lower voltage one while zero-current-switching is achieved to improve the circuit efficiency. In order to simplify the control circuit and provide a flexible modulation control, a digital signal processor 28035 (DSP28035) from Texas Instruments (TI) is used as the PWM controller to realize discharging and charging balance control in series-connected batteries. Two lead acid batteries NP2V4AH from Tai Mao battery company in series-connection are used to verify the operation of the equalization circuit with zero-current-switching for series-connected batteries. The experiment results are connected the feasibility of the proposed equalization circuit.