Power battery device with phase-change material cooling system

Abstract

The invention discloses a power battery device with a phase-change material cooling system, which comprises a bolt, a plurality of battery monomers, a box cover venting hole, an electrode connecting shaft, a box body top cover, a side venting hole and a frame body, wherein the battery monomers use batteries as base bodies, a shell is arranged outside the battery monomers, phase-change material is filled between the batteries and the shell and is sealed by insulating rubber; a battery box body is provided with the venting holes for radiating; the power battery device can realize that the temperature of batteries of a power device can be effectively reduced under more rugged thermal environment and can meet the requirement of the balance of temperature distribution among the battery monomers, thereby achieving the best operation condition of the power device, and prolonging the battery service life and improving the power performance of the power device. The adopted phase-change material has larger latent heat of phase-change, perfect phase-change temperature, economic and safe material, and high recycle utilization efficiency.

Description

Technical field [0001] The invention relates to a power battery device with a phase change material cooling system. Background technique [0002] Because the internal chemical reaction of the power battery is not stable, when used at high temperature, it may cause a violent chemical reaction inside the battery, which generates a lot of heat. If the heat is too late to dissipate and quickly accumulate inside the battery, the battery may leak liquid , Outgassing, smoking, etc. In severe cases, the battery will burn violently and explode. Because the performance and quality of power equipment depend to a large extent on the performance of the configured battery stack, especially the reliability, cycle performance and cost of the battery. The temperature imbalance caused during the actual operation of the battery stack during the charging and discharging process is one of the important reasons for the failure of the battery pack. Therefore, a reasonable and effective battery manageme...

AI Technical Summary

Problems solved by technology

However, when the battery is working in a harsh thermal environment, it is difficult to cool the battery to the optimum operating temperature only by simple air cooling, and at the same time, it cannot guarantee the temperature consistency between the batteries, so that the battery performance is difficult to be good. Therefore, in this kind of working environment, in order to obtain a better cooling effect for the power battery, it is necessary to consider the use of efficient cooling methods to ensure the optimization of battery performance, so the development of high-efficiency, There is a need for a compact, relatively low-cost power battery device with a phase change material cooling system

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