New energy vehicle battery pack air cooling structure

Abstract

The invention discloses an air cooling structure of a new energy power vehicle battery pack. The air cooling structure comprises a battery body, wherein the battery body is of a square structure; theupper side of the battery body is fixedly connected with a square liquid box; the liquid box is tightly fit with the upper wall of the battery body; a clapboard is in sealing sliding connection in theliquid box; the area, which is positioned below the clapboard, of the liquid box is filled with evaporated liquor; and the area above the clapboard in the liquid box is full of distilled water. The air cooling structure has the advantages that a floating block and a rotation plate are arranged in the air cooling structure, so that an air feeding pipe is under an opening state so as to be convenient for the outside to carry out a water adding operation into the liquid box when an amount of water in the liquid box is small. Otherwise, when the amount of water in the liquid box is large and no water needs to be added, the floating block floats to enable the rotation plate to seal the liquid feeding pipe under the function of own gravity so as to show to the outside that no water needs to beadded.

Description

technical field [0001] The invention relates to the technical field of automobile batteries, in particular to an air cooling structure for a battery pack of a new energy vehicle. Background technique [0002] Environmental pollution, energy crisis, global reduction of carbon dioxide, people need to reduce dependence on fossil energy and find new energy instead. In the automotive industry, electric vehicles have been vigorously developed. The technical performance of power batteries is limited by many external conditions, especially the temperature conditions. A good operating temperature is a prerequisite for safe and efficient work of power batteries. Battery temperature is a key factor restricting the performance improvement of electric vehicles, and high temperature has a double impact on power batteries. On the one hand, as the temperature rises, the activity of the electrolyte increases, the ion diffusion speed increases, the internal resistance of the battery decrease...

AI Technical Summary

Problems solved by technology

On the contrary, in a low temperature environment, due to the low activity of the electrolyte, the ion diffusion rate is slow, the internal resistance of the battery will increase greatly, the discharge capacity will be significantly reduced, and the internal pressure will rise rapidly during charging, which will affect the safety of the battery.

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