Huawei Digital Power Technologies Co., Ltd.

Huawei Technologies Co., Limited

Fuwen Chen

Kui Zhou

Wenke Yang

Xinran Yang

Zhanjing Zhang

An energy storage apparatus includes a battery, a DC/DC conversion circuit, a controller, a first branch, and a second branch. The battery is connected to a first end of the DC/DC conversion circuit, the first branch and the second branch are connected in parallel between a first end of a power converter and a second end of the DC/DC conversion circuit, and impedance of the first branch is less than that of the second branch. A first end of a power conversion circuit is connected in parallel to a first capacitor, the controller controls, based on a difference between a voltage of the energy storage apparatus and a voltage of the power converter, the first branch and the second branch to be connected or disconnected, to implement soft-start of the energy storage apparatus or the power converter.

Energy storage apparatus and energy storage apparatus control method

An electrical energy storage system is provided in this disclosure, which includes: M battery packs; M first DC/DC converters, where first terminals of the M first DC/DC converters are respectively connected to the M battery packs, the M first DC/DC converters are classified into N first DC/DC converter sets; and N second DC/DC converters, where the N second DC/DC converters one-to-one correspond to the N first DC/DC converter sets, a first terminal of each second DC/DC converter is connected to second terminals of all first DC/DC converters in a first DC/DC converter set corresponding to the second DC/DC converter, a second terminal of each second DC/DC converter is connected to a first interface of the electrical energy storage system, the first interface is to receive a direct current from a power generation system or output a direct current to the power generation system.

Electrical energy storage system and energy storage system

An electrical energy storage system is provided in this dislosure, which includes: M battery packs; M first DC/DC converters, where first terminals of the M first DC/DC converters are respectively connected to the M battery packs, the M first DC/DC converters are classified into N first DC/DC converter sets; and N second DC/DC converters, where the N second DC/DC converters one-to-one correspond to the N first DC/DC converter sets, a first terminal of each second DC/DC converter is connected to second terminals of all first DC/DC converters in a first DC/DC converter set corresponding to the second DC/DC converter, a second terminal of each second DC/DC converter is connected to a first interface of the electrical energy storage system, the first interface is to receive a direct current from a power generation system or output a direct current to the power generation system.

Growing community of inventors

Xi'an, China

Fuwen Chen