Huawei Technologies Co., Limited

Haoren Shan

Kui Zhou

Wentao He

Yiping Huang

A charging and discharging apparatus includes, in some implementations, an alternating current charging and discharging unit, a bidirectional alternating current/direct current conversion unit, a bidirectional direct current/direct current isolated conversion unit, and a first energy storage unit that are sequentially connected in series, and further including at least one switch unit, a direct current/direct current isolated conversion unit, and a second energy storage unit. A first end of each switch unit is connected to the bidirectional direct current/direct current isolated conversion unit, a second end of each switch unit is connected to a first end of the direct current/direct current isolated conversion unit, and a second end of the direct current/direct current isolated conversion unit is connected to the second energy storage unit.

Multiple bidirectional converters for charging and discharging of energy storage units

Disclosed is a bidirectional conversion circuit, including a first bidirectional conductive network, a second bidirectional conductive network, a first switching transistor, a second switching transistor, a first diode, and a second diode, where the first bidirectional conductive network is connected in series to the first switching transistor to form a first branch, and a first end of the first branch is connected to a cathode of the first diode to form a first endpoint; and the second bidirectional conductive network is connected in series to the second switching transistor to form a second branch, and a second end of the second branch is connected to an anode of the second diode to form a third endpoint.

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Shenzhen, China

Haoren Shan