The invention discloses a bidirectional DCDC converter and a DC charging pile, and the converter comprises a first end, a second end, at least two bidirectional DCDC units, a first switching circuit, a second switching circuit, and a controller. Each bidirectional DCDC unit comprises a transformer, a primary DCDC circuit and a primary resonance network which are sequentially connected between the first end and the primary side of the transformer, and a secondary DCDC circuit and a secondary resonance network which are sequentially connected between the second end and the secondary side of the transformer; the first switch circuit is connected between the first end and the primary DCDC circuit; the second switching circuit is connected between the second end and the secondary DCDC circuit; and the controller is configured to control the at least two primary DCDC circuits to form series connection or parallel connection, and/or control the at least two secondary DCDC circuits to form series connection or parallel connection. The bidirectional DCDC converter provided by the invention can accept larger voltage and current without using components with larger bearing capacity, so that the device cost is effectively reduced.
本申请公开了一种双向DCDC变换器和直流充电桩,双向DCDC变换器包括第一端、第二端、至少两个双向DCDC单元、第一开关电路、第二开关电路和控制器,每个双向DCDC单元包括变压器、依次连接在第一端和变压器原边之间的原边DCDC电路和原边谐振网络以及依次连接在第二端和变压器副边之间的副边DCDC电路和副边谐振网络;连接在第一端和原边DCDC电路之间的第一开关电路;连接在第二端和副边DCDC电路之间的第二开关电路;控制器被配置为控制至少两个原边DCDC电路之间形成串联或并联,和/或,控制至少两个副边DCDC电路之间形成串联或并联。本申请提供的双向DCDC变换器,可以接受更大的电压和电流的同时,无需使用承载能力更大的元器件,有效地降低了器件成本。
Bidirectional DCDC converter, DC charging gun and energy storage system
双向DCDC变换器、直流充电枪和储能系统
2024-11-26
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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