Battery device and energy storage system

Abstract

The utility model discloses a battery device and an energy storage system, and belongs to the technical field of batteries. The battery device comprises a shell, a first battery module, a first short-circuit protection device, a first output port, a second output port, a third output port and a fourth output port, and the first battery module and the first short-circuit protection device are fixed in the shell; the first output port, the second output port, the third output port and the fourth output port are fixed on the wall surface of the shell, the first battery module is provided with a first electrode and a second electrode, the first electrode is respectively connected with one end of the first short-circuit protection device and the first output port, the second electrode is respectively connected with the second output port and the third output port, and the fourth output port is connected with the second short-circuit protection device. The other end of the first short-circuit protection device is connected with the fourth output port; the first output port and the second output port are used for being connected with other battery devices in parallel. The installation process of multiple battery devices in parallel connection can be simplified, and the installation efficiency is improved.

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