Dual-channel air-cooled phase change integrated radiator based on thermal management of cylindrical battery

Abstract

The invention discloses a dual-channel air-cooled phase change integrated radiator based on thermal management of a cylindrical battery. The dual-channel air-cooled phase change integrated radiator comprises two groups of exhaust fans and a group of heat exchangers. Each heat exchanger comprises an outer cylinder, an inner cylinder and a ventilation duct. The outer cylinder and the inner cylinderare concentric hollow cylinders with openings at the upper and lower ends. The ventilation duct with openings at both ends penetrates through the cylinder wall of the outer cylinder. The ventilation duct is partially arranged in the interlayer between the outer cylinder and the inner cylinder and is connected with the outer wall of the inner cylinder, the other part penetrates through the outer cylinder wall to be arranged at the outer part, and the port of the inner part of the ventilation duct is aligned with the exhaust fans. The area inside the interlayer and surrounding the outside of theventilation duct is the filling area of the composite phase change material which is made of nano-silver powder, silicon dioxide and paraffin wax. The heat of the battery is absorbed by the phase change latent heat of the composite phase change material and taken away the absorbed heat through air cooling so as to prevent serious heating of the battery during high-intensity operation and rapid charging and discharging, the temperature control effect is obvious, the safety and the service life of the battery can be effectively enhanced.

Description

technical field [0001] The invention belongs to the technical field of power battery thermal management devices, and in particular relates to a dual-channel air-cooled phase-change integrated radiator based on cylindrical battery thermal management. Background technique [0002] Cylindrical batteries with high energy density will generate a lot of heat during fast charging and discharging or continuous high-intensity work, and the heat generation will cause the temperature of the battery body to rise sharply. [0003] However, the battery has a "comfortable" temperature range when it is working. If the temperature is too high, the aging of the battery will be accelerated, and the service life will be greatly reduced. In severe cases, thermal runaway may occur, causing the battery to burn or explode. Therefore, it is necessary to adopt a thermal management method for the battery. [0004] Common battery thermal management technologies include air cooling, liquid cooling, and...

AI Technical Summary

Problems solved by technology

Air cooling has low heat dissipation efficiency and simple structure; liquid cooling has strong heat dissipation capacity, but its structure is complex and easy to leak; phase change materials are light in weight and have good heat dissipation effects, but the heat absorbed by them is difficult to dissipate, and once the phase change materials melt, they will lose temperature control ability

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