Power battery system

Abstract

The invention discloses a power battery system .The power battery system comprises a battery module .The battery module comprises a mono-battery, a fixing mechanism and a heat conduction layer .The fixing mechanism comprises two symmetrical frameworks, each framework is provided with a groove with one face open and five faces for enclosing, the two frameworks clamp the mono-battery from the two sides through the grooves, and the top face, the bottom face and the two opposite side faces of the mono-battery are in sealing fit with four side walls of the grooves respectively .The heat conduction layer is made of phase-change materials and is arranged between the bottom walls of the grooves and one of the other two opposite side faces of the mono-battery .According to the power battery system, a sealed interlayer for containing the heat conduction layer is formed between the mono-battery and the grooves, the heat conduction layer is wrapped and supported and can make direct contact with the mono-battery, the heat conduction layer is protected against damage when the battery module runs, the service life is prolonged, and the heat conduction layer plays a good and stable heat dissipation role.

Description

Technical field [0001] The present invention relates to the technical field of batteries, in particular to a power battery system. Background technique [0002] With the energy crisis and environmental pollution becoming more and more serious, the use of cleaner electricity to replace conventional fossil fuels as vehicle energy has become an important development direction and has received more and more attention. As one of the key technologies of electric vehicles, battery technology, battery life and stability during operation will directly affect the stability and safety of electric vehicles. [0003] The power battery system of an electric vehicle is generally composed of a battery module, a management system, a support and protection system, and a charging and discharging conversion connection device that are installed on the battery module. The battery module generally includes multiple single cells. During use, the heat generated by each single battery will accumulate insid...

AI Technical Summary

Problems solved by technology

However, there are still some problems in the current phase change material cooling method. Either the phase change material is filled into the interlayer, so that the interlayer is in contact with the battery module, but there is a large contact thermal resistance between the interlayer and the battery module. The efficiency is low, and it is not convenient for production and manufacturing. Either the phase change material is directly in contact with the battery module, which reduces the contact thermal resistance and improves the heat transfer efficiency, but does not form an effective and reliable protection support for the phase change material, resulting in its own strength. Low phase change materials are easily damaged during the operation of the battery module and have a low lifespan, which is not conducive to continuous and stable heat dissipation of the battery module

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