Battery pack and vehicle with same

Abstract

The invention discloses a battery pack and a vehicle with same. The battery pack comprises a battery pack body and a waterproof ventilation valve, wherein a vent hole is formed in the battery pack body; the waterproof ventilation valve comprises a base and a waterproof ventilation membrane; a breath hole communicated with the vent hole is formed in the base; the waterproof ventilation membrane isfixed on the outer surface of the battery pack body and is used for covering the base; the waterproof ventilation membrane is structured in manner that a damage notch communicated with the breath holeis formed in the waterproof ventilation membrane when the pressure inside the battery pack body is greater than that outside the battery pack body. According to the battery pack disclosed by the embodiment of the invention, the pressure difference inside and outside the battery pack can be balanced under normal situations, when air inside the battery pack body is expanded, or a great deal of airis released from the battery pack body, the air inside the battery pack can flow outside the battery pack body rapidly, then the purpose of rapid pressure release can be achieved, and the function ofsecurity protection on the battery pack can be achieved.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a battery pack and a vehicle with the same. Background technique [0002] There is no waterproof and breathable valve structure on the package of the battery pack in the related art. In extreme cases such as overcharging, over-discharging, or short circuit of the battery pack, a large amount of gas will be released in the battery pack, resulting in a very high pressure inside the pack, and there is a risk of explosion. At the same time, when the battery pack is placed in a high-temperature environment, the air in the battery pack expands, causing the battery pack to bulge. Even if some battery packs in the related art are equipped with explosion-proof valves to prevent the battery packs from exploding, the explosion-proof valves still cannot achieve the purpose of pressure relief and occupy a large space. Contents of the invention [0003] The present invention aims to solve one of the...

AI Technical Summary

Problems solved by technology

[0002] There is no waterproof and breathable valve structure on the package body of the battery pack in the related art. In extreme cases, such as when the battery pack is overcharged, over-discharged, or short-circuited, a large amount of gas is released in the battery pack, resulting in a very high pressure inside the pack, and there is a risk of explosion.

At the same time, when the battery pack is placed in a high-temperature environment, the air in the battery pack will expand, causing the battery pack to bulge.

Even if some battery packs in the related art are equipped with explosion-proof valves to avoid battery pack explosion, the explosion-proof valve still cannot achieve the purpose of pressure relief and takes up a lot of space

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