Battery pack, new energy device, fire-extinguishing method and system for battery pack, and readable storage medium

Abstract

A battery pack, a new energy device, a fire-extinguishing method and system for a battery pack, and a readable storage medium, which relate to the technical field of new energy batteries and are used to improve the reliability of battery packs during use. The battery pack comprises a case assembly (1), a cell assembly (2), a first-stage fire-extinguishing assembly (3) and a second-stage fire-extinguishing assembly (4). The case assembly (1) comprises an accommodating cavity (11) and a fire-extinguishing agent injection port (12) in communication with the accommodating cavity (11). The cell assembly (2) is mounted in the accommodating cavity (11). The first-stage fire-extinguishing assembly (3) is mounted in the accommodating cavity (11), and the first-stage fire-extinguishing assembly (3) is configured to extinguish a fire on the cell assembly (2). The second-stage fire-extinguishing assembly (4) is mounted outside the case assembly (1) and is in communication with the fire-extinguishing agent injection port (12), and the second-stage fire-extinguishing assembly (4) is configured to spray a fire-extinguishing agent onto the cell assembly (2) in the accommodating cavity (11). In the technical solution, a two-stage fire-extinguishing assembly is used, thus improving the fire-extinguishing effect. In addition, the battery pack can adapt to battery systems of different sizes, with a high level of universality, thereby greatly reducing research and development and design costs.

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