DC-DC CONVERTER AND VEHICLE

• Main Author: HOSOI HIROYUKI
• Format: Patent
• Language: English; Japanese
• Published: 26.08.2022
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To inhibit heat generation in an element by reducing loss in the element.SOLUTION: A DC-DC converter according to the present disclosure includes a DC-AC conversion circuit, a transformer, a plurality of rectifier circuits, a plurality of smoothing circuits, and an output circuit. The DC-AC conversion circuit converts a DC input voltage to a primary side AC voltage. The transformer includes a primary side coil to which the primary side AC voltage is applied, and a plurality of secondary side coils that are magnetically coupled with the primary side coil. The plurality of rectifier circuits are provided in the plurality of secondary side coils in one-to-one correspondence, and each of the plurality of rectifier circuits outputs a rectified voltage obtained by full-wave rectification of a secondary side AC voltage outputted from the corresponding one of the plurality of secondary side coil. The plurality of smoothing circuits are provided in the plurality of rectifier circuits in one-to-one correspondence, and each of the plurality of smoothing circuits smooths a rectified voltage outputted from the corresponding one of the plurality of rectifier circuits. The output circuit is connected to each of output terminals of the plurality of smoothing circuits, and outputs a DC output voltage.SELECTED DRAWING: Figure 1 【課題】素子の損失を低減し、素子が発熱することを抑制する。【解決手段】本開示に係るＤＣ－ＤＣコンバータは、ＤＣ－ＡＣ変換回路と、トランスと、複数の整流回路と、複数の平滑回路と、出力回路と、を備える。ＤＣ－ＡＣ変換回路は、直流の入力電圧を一次側交流電圧に変換する。トランスは、一次側交流電圧が印加される一次側コイルと、一次側コイルに磁気的に結合される複数の二次側コイルとを含む。複数の整流回路は、複数の二次側コイルに一対一に対応して設けられ、それぞれが、複数の二次側コイルのうちの対応する二次側コイルから出力される二次側交流電圧を全波整流した整流電圧を出力する。複数の平滑回路は、複数の整流回路に一対一に対応して設けられ、それぞれが、複数の整流回路のうちの対応する整流回路から出力される整流電圧を平滑化する。出力回路は、複数の平滑回路のそれぞれの出力端子と接続され、直流の出力電圧を出力する。【選択図】図１