The invention provides a conversion circuit. The conversion circuit comprises an output filtering unit, a rectifying unit, a main transformer, a high-frequency inverter circuit and a switching circuit unit. The output filtering unit comprises a capacitor and a filtering inductor; the rectifying unit is connected with the output filtering unit and comprises at least two commutator units, each commutator unit comprises a diode rectifying unit, and the dotted terminal of each winding group of the filtering inductor is connected with the output negative end of each rectifying unit; the main transformer comprises an output side and an input side, the output side at least comprises two secondary windings, each secondary winding is connected with each commutator unit, the input side at least comprises a primary winding, and the position of the primary winding corresponds to the position of the secondary winding; and the high-frequency inverter circuit is connected with the primary winding. By simultaneously switching the series connection state and the parallel connection state of the rectification unit and the filter inductor, the wide power range is realized, the power loss and the thermal stress of the filter inductor are reduced, and the conversion efficiency is improved.
本申请提供了一种变换电路,包括输出滤波单元、整流单元、主变压器、高频逆变电路及切换电路单元。输出滤波单元包括电容及滤波电感;整流单元与输出滤波单元相连,且包括至少两个整流子单元,每一整流子单元包括一二极管整流单元,滤波电感各绕线组的同名端均连接于各整流单元的输出负端;主变压器包括输出侧和输入侧,输出侧至少包括两个副边绕组,且每一副边绕组与每一整流子单元相连,输入侧至少包括一个原边绕组,原边绕组的位置与副边绕组的位置相对应;高频逆变电路与原边绕组相连。通过同时切换整流单元和滤波电感的串联状态和并联状态,在实现宽功率范围的同时,降低滤波电感的功率损耗和热应力,提高变换效率。
Conversion circuit, charging module and electronic equipment
一种变换电路、充电模块及电子设备
2024-12-31
Patent
Electronic Resource
Chinese
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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