Battery pack air port protection device

Abstract

The invention provides a battery pack air port protection device applied to the technical field of new energy automobile battery packs. Air ports (2) are formed in a battery pack shell (1) of a battery pack, the protection device is arranged at the part, at the lower ends of the air ports (2), in the battery pack shell (1), and air port plugs (4) of the air port protection device are installed on telescopic rods (5) of telescopic self-locking solenoid valves (3) and located in the air ports (2). The battery pack air port protection device is simple in structure and reliable in performance control, the inlet air port and the outlet air port of the battery pack can be effectively and conveniently controlled to be sealed or opened through simple improvement, and the inlet air port and the outlet air port can be sealed when heat dissipation is not needed by the battery pack and can be opened when heat dissipation is needed so that it can be avoided that the temperature is too high when the battery pack works, it can also be avoided that external water or dust enters the battery pack and damages the battery pack in special situations, and the overall performance of the battery pack can be comprehensively improved.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicle battery packs, and more specifically relates to a protection device for battery pack tuyere. Background technique [0002] With the deterioration of the global environment and the reduction of resources, automobile factories have shifted their attention to new energy vehicles. Various electric vehicles such as hybrid electric vehicles, pure electric vehicles, and extended-range electric vehicles emerge in an endless stream. In electric vehicles, the power battery pack is a key component. The safe use of power battery packs is particularly important. The ambient temperature of the power battery pack is generally defined as -20°C to 45°C. To ensure the normal use of the power battery pack in the entire temperature range, thermal management of the power battery pack is required. At present, the thermal management and heat dissipation design of the power battery pack mainly adopts three ...

AI Technical Summary

Problems solved by technology

With such a structure, in the event of flooded roads, urban waterlogging, vehicles accidentally falling into the water, etc., water will enter the battery pack through the air inlet or outlet, damaging the battery cells and other components inside the battery pack. Electronic components, and the electronic components cannot be repaired, or even short circuit and other safety hazards, resulting in failure or even scrapping of the battery pack

At the same time, the air inlet and outlet of the battery pack are open throughout the entire life cycle of the vehicle without protective parts. During normal use, dusty and humid air will also appear in the battery pack through the air inlet or The air outlet enters the inside of the battery pack, and dust accumulates in the pack for a long time, causing insulation failure of the battery pack and affecting the overall performance of the battery pack

Images