A battery thermal management system and method

Abstract

The invention provides a battery heat management system and method. The system comprises a first heat exchange module, a second heat exchange module and a flow guide air duct, wherein the flow guide air duct comprises a top layer flow guide air duct, a bottom layer flow guide air duct, a first connecting air duct, a second connecting air duct, a third connecting air duct and a fourth connecting air duct; the first heat exchange module is connected with the top layer flow guide air duct and the bottom layer flow guide air duct respectively through the first connecting air duct and the second connecting air duct, and the second heat exchange module is connected with the top layer flow guide air duct and the bottom layer flow guide air duct respectively through the third connecting air duct and the fourth connecting air duct, so that a sealed whole body is formed by the first heat exchange module, the second heat exchange module and the flow guide air duct. According to the system, the protection level of the battery system can be guaranteed, efficient air-cooling heat dissipation is carried out on the battery system, and then the service life of a battery is effectively prolonged, and the work efficiency of the battery is improved.

Description

technical field [0001] The invention relates to the technical field of battery thermal management, in particular to a battery thermal management system and method. Background technique [0002] Heat accumulation is the most important cause of power battery system failures and safety accidents. As an indispensable part of the battery management system, the battery thermal management system is a key part of modern electric vehicles, and it is also an important means to maximize battery performance and improve vehicle efficiency. [0003] Based on the heat conduction medium, the existing battery thermal management system can be simply divided into a water-cooled heat dissipation system and an air-cooled heat dissipation system. As for the plastic case lithium iron phosphate power battery, due to the low thermal conductivity of the plastic case (PP+GF30), it is difficult for the battery to achieve the ideal heat dissipation effect by simple water cooling or air cooling. Most o...

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Problems solved by technology

[0004] Aiming at the defects of the prior art, the present invention provides a battery thermal management system and method, which can solve the problem that the existing battery thermal management air-cooling system in the prior art will reduce the protection level of the system while dissipating heat, and plastic case batteries are generally limited by The low thermal conductivity of the pp material of the battery case cannot achieve a high heat dissipation effect, etc.

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