CN CN224342461U
The utility model discloses a power battery fire retardant device, a power battery assembly and driving equipment, and relates to the technical field of traffic transportation. The power battery fire-retardant device comprises a blocking structure and a fire-retardant structure, the blocking structure is arranged to face the battery cell assembly, and the blocking structure is provided with a bent flow channel; the fire-retardant structure is fixed relative to the shell of the power battery box, the fire-retardant structure is provided with a plurality of fire-retardant channels, and the accommodating cavity, the flow channel, the fire-retardant channels and the external environment of the power battery box are communicated in sequence, so that under the condition of thermal runaway, when a high-temperature gas-solid mixture formed by the corresponding power battery assembly passes through the bent flow channel, the fire-retardant channels are blocked by the fire-retardant channels. Due to the fact that solid particles of a gas-solid mixture are high in speed and move along a straight line, the blocking structure can block the solid particles, the risk that the high-temperature solid particles spread to the outside during combustion is reduced, in addition, a fire-retardant channel of the fire-retardant structure is beneficial to extinguishing gas flames, and the fire-retardant effect is good. Therefore, the fire risk can be reduced.
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