Huawei Digital Power Technologies Co., Ltd.

Zhenghua Zou

Yang Liu

Yuxiang Li

Zhipeng Wu

Shijiang Yu

Jianpeng Li

Li Yang

Huibin Hao

A battery management system is provided in this application, which includes a monitoring module and a sampling module. The sampling module performs sampling on an operating parameter of a direct current converter to obtain target sampling information, and sends the target sampling information to the monitoring module. The monitoring module receives the target sampling information sent by the sampling module, and sends the target sampling information to a central monitoring unit, so that the central monitoring unit determines target charge power for charging an energy storage battery by a power conversion system PCS; and receives a first control instruction sent by the central monitoring unit, and controls the direct current converter to adjust charge power for charging the energy storage battery by the power conversion system PCS to the target charge power.

Battery management system

An energy storage system includes at least one energy storage container, and the energy storage container includes a battery management system and m battery clusters. According to a rapid spanning tree protocol (RSTP) and a known physical position of a second controller, a first controller determines physical positions of remaining second controllers. A plurality of third controllers corresponding to n battery packs in each battery cluster determine a first third controller and set a physical position of the first third controller as a first physical position. An ithird controller in the plurality of third controllers determines a physical position of the ithird controller based on a position signal sent by an (i−1)third controller, where i=2, 3, . . . , or n.

Energy storage system, physical position identification method, and photovoltaic power generation system

An electrical isolation apparatus. A signal is transmitted between a first transmission circuit, a first reference circuit, a second transmission circuit, and a second reference circuit according to a principle of electric field coupling between conductors. Therefore, the electrical isolation apparatus can be applied to isolation and transmission for a signal with a relatively high frequency between a first signal device and a second signal device. In addition, a material used by the electrical isolation apparatus may be a common metal conductor, which greatly reduces a size and costs of the electrical isolation apparatus and facilitates manufacturing and implementation of the electrical isolation apparatus.

Electrical isolation apparatus

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Dongguan, China

Zhenghua Zou