Ventilation and heat dissipation device for new energy automobile battery pack

Abstract

The invention provides a ventilation and heat dissipation device for a new energy automobile battery pack, and relates to the technical field of new energy automobiles. The ventilation and heat dissipation device comprises a box body for accommodating a battery pack and a box cover matched with the box body, wherein the box body and the box cover form a battery pack accommodating cavity; the box body comprises a bottom plate and a side plate, the bottom end of the box body is fixed to the upper surface of the bottom plate, a high-temperature air inlet with a downward opening is formed in the bottom plate, and a low-temperature air inlet is formed in the side plate; an air guide assembly is mounted on the low-temperature air inlet; and an air outlet with an upward opening is formed in the box cover. The high-temperature air inlet and the low-temperature air inlet are formed at the same time, normal-temperature air flow and cooled low-temperature air flow are fed into the battery pack containing cavity, multi-point air supply can effectively improve the air supply efficiency, the heat dissipation effect is remarkably improved, meanwhile, the high-temperature air inlet and the low-temperature air inlet are each provided with an air guide assembly. The air inlet amount can be adjusted according to different vehicle using environments, and the adaptability is good.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a ventilation and cooling device for a battery pack of a new energy vehicle. Background technique [0002] As one of the core components of new energy vehicles, the battery pack of new energy vehicles is responsible for providing power for new energy vehicles. The quality of the battery pack directly affects the safety and service life of the car. Due to the intense chemical reaction inside the battery pack during charging and discharging, a large amount of heat will be generated, resulting in a sharp increase in the temperature of the battery pack and the surrounding environment of the battery pack. High temperature will not only affect the service life and charging and discharging effect of the battery pack, but even affect the safety performance of the entire vehicle. At present, the mileage and safety of batteries have become the key issues of new energy vehicles...

AI Technical Summary

Problems solved by technology

The battery box is the carrier and protection device of the battery pack. If the heat cannot be discharged in a timely and even manner, it will seriously affect the service life of the battery and even cause safety hazards

[0003] The heat dissipation effect of the battery packs of existing new energy vehicles is not ideal during use. During use, the battery packs are prone to failure due to the high temperature of the battery packs. In severe cases, it may cause fires, and the existing Most of the battery packs of new energy vehicles use air cooling to dissipate heat during use, but after a long period of use, the temperature of the internal fan blades will gradually rise due to the long-term work, which will affect Cooling effect of the battery pack

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