New energy automobile battery pack cooling device

Abstract

The invention discloses a new energy automobile battery pack cooling device. The new energy automobile battery pack cooling device comprises an upper mounting rack, a lower mounting rack, a water cooling plate and elastic heat absorption pieces used for absorbing heat produced by a battery cell, a battery cell mounting space is formed between the upper mounting rack and the lower mounting rack, aplurality of battery cells are distributed in the battery cell mounting space in a matrix arrangement mode, a plurality of elastic heat absorption pieces are arranged in the battery cell mounting space, a gap formed between the adjacent battery cells is filled with the elastic heat absorption pieces, the water cooling plate is arranged at the bottom part of the lower mounting rack, a heat conduction piece is arranged between the water cooling plate and the bottom part of the lower mounting rack, and the lower end of the battery cell penetrates through a via hole in the lower mounting rack to be in contact with the heat conduction piece. The temperature of the battery pack is consistent under the condition of charge and discharge at high rate, the cooling effect is good, the temperature uniformity is good, the overall structure is simple, the new energy automobile battery pack cooling device is convenient to assemble, no space is additionally occupied, the utility rate of space is high,and the new energy automobile battery pack cooling device is convenient and reliable to use.

Description

technical field [0001] The invention relates to the field of vehicle battery pack heat dissipation, in particular to a new energy vehicle battery pack heat dissipation device. Background technique [0002] With the rapid development of new energy vehicles, the requirements for the performance and safety of new energy vehicles are also getting higher and higher. As one of the important components of new energy vehicles, the battery pack is required to be able to charge and discharge at a high rate in order to increase the power of the car and shorten the charging time. The battery cells will generate a lot of heat during the high-rate charge and discharge process. In addition, the battery pack is compact in structure and heat is easy to accumulate, resulting in local overheating or uneven temperature of the battery pack, which in turn leads to performance degradation of the battery pack, capacity decay, and even thermal runaway. Endanger the owner's personal and property saf...

AI Technical Summary

Problems solved by technology

However, in the prior art, only simple phase-change materials are used for cooling and heat dissipation, and the use of simple phase-change materials for cooling only absorbs heat and does not dissipate heat outside the battery pack. It can absorb the maximum heat, and the temperature of the battery core will rise rapidly. At this time, the phase change material basically no longer has the cooling effect, which has a greater risk; at the same time, if the ambient temperature is high, close to the phase change temperature of the phase change material, the heat absorbed by it will be Smaller, less effective cooling

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