An all-weather effective thermal management system for lithium-ion battery packs

Abstract

The invention discloses an all-weather effective thermal management system for a lithium ion battery pack. The system comprises a battery box, a lithium ion battery pack, a thermal insulation materialand heat-conducting sleeves, wherein the lithium ion battery pack is arranged in the battery box and composed of lithium ion batteries; the thermal insulation material is filled in the inner wall ofthe battery box; the heat-conducting sleeves are arranged among the lithium ion batteries; phase change materials or heat pipes are filled in the heat-conducting sleeves; the heat-conducting sleeves filled with the phase change materials and the heat-conducting sleeves filled with the heat pipes are alternatively and uniformly arranged; and fins are arranged on the tops of the heat pipes. The all-weather effective thermal management system disclosed by the invention is simple in structure, easy to manufacture, convenient to use and excellent in adaptability, the charge and discharge performance of the lithium ion battery pack in a low-temperature environment and thermal safety of the lithium ion battery pack in a high-temperature environment can be effectively improved, and the temperaturecoherence of battery cells can be well ensured.

Description

Technical field: [0001] The invention relates to the field of thermal management of lithium-ion battery packs, in particular to an all-weather effective thermal management system for lithium-ion battery packs. Background technique: [0002] As a new generation of green energy, lithium-ion batteries have the advantages of high energy density, no memory effect, and environmental friendliness. They have been widely used in the field of portable electronic products. With the development of society, lithium-ion batteries are widely used in power batteries and energy storage The field of batteries shows great application potential. [0003] The optimum operating temperature of lithium-ion batteries is 20-30°C. With the continuous expansion of application fields, lithium-ion batteries often encounter extreme environments such as low temperature and high temperature during use. The charge and discharge performance of lithium-ion batteries is greatly reduced in low temperature envir...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide an all-weather effective thermal management system for a lithium-ion battery pack, which has a simple structure, is easy to manufacture, is convenient to use, and has good adaptability. thermal safety and can better ensure the consistency of the temperature of the single battery, so that it can work normally in low temperature and high temperature environments, and solve the problem that the lithium ion battery pack in the prior art is affected by the ambient temperature Charging and discharging performance declines at low temperatures, thermal safety accidents are prone to occur at high temperatures, and the temperature of single cells is inconsistent during work, resulting in short service life of lithium-ion battery packs

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