Battery pack and energy storage system

Abstract

The invention belongs to the technical field of energy storage, and discloses a battery pack and an energy storage system.The battery pack comprises a plurality of battery units arranged in the first direction, each battery unit comprises a shell, a plurality of battery cell packages and a plurality of liquid cooling plates, the shell is provided with an open containing cavity, and the battery cell packages are arranged in the containing cavity in the second direction; and each liquid cooling plate is clamped between two adjacent battery cell packages. Circuit plugs are arranged at the two ends of the shell in the first direction, the circuit plugs are connected with the battery cell packages, and the battery cell packages of every two adjacent battery units are electrically connected through the circuit plugs; water path plugs are arranged at the two ends of each liquid cooling plate in the first direction; and the liquid cooling plates of two adjacent battery units are communicated through a water path plug. The battery pack is small in size and convenient to transport and maintain, the cooling effect of the battery pack on the battery core pack is good, the temperature uniformity of the battery core pack in the working process is good, the battery pack can release electricity completely, and the service life of the battery pack is prolonged.

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