Energy storage device, energy storage system and charging network

Abstract

The present application relates to the field of energy storage technology, and provides an energy storage device, an energy storage system and a charging network. The energy storage device includes a battery device and a heat exchange unit. The battery device includes a fluid inlet and a fluid outlet. The heat exchange unit includes a main liquid supply pipeline, a liquid supply branch, a main liquid return pipeline, a liquid return branch and a reversing valve. The fluid inlet is connected to the liquid supply branch, and the fluid outlet is connected to the liquid return branch. The reversing valve includes a seat body and a valve core movably connected to the seat body. The valve core forms a first flow channel and a second flow channel. The valve core has a first state and a second state. When the valve core is in the first state, the first flow channel conducts the main liquid supply pipeline and the liquid supply branch, and the second flow channel conducts the main liquid return pipeline and the liquid return branch. When the valve core is in the second state, the valve core cuts off the main liquid supply pipeline and the liquid supply branch, and the valve core cuts off the main liquid return pipeline and the liquid return branch. By manipulating a valve core to control the on-off of the liquid supply branch and the on-off of the liquid return branch, not only the number of valve parts can be reduced, but also the manipulation steps can be simplified.

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