A thermal management system and thermal management method for a small vehicle-mounted rechargeable energy storage system

Abstract

The embodiment of the invention discloses a thermal management system and a thermal management method of a small vehicle-mounted rechargeable energy storage system (RESS). A small vehicle-mounted rechargeable energy storage system includes a housing and a plurality of lithium battery cells positioned in the housing. The thermal management system includes a thermally conductive aluminum plate including a first thermally conductive portion and a second thermally conductive portion; a plurality of thermally conductive silica gel pads in contact with the first thermally conductive portion; whereineach thermally conductive silica gel pad is adapted to accommodate one of a plurality of lithium battery cells; A semiconductor cooling sheet in contact with the second heat conducting portion and the inner wall of the housing, respectively, wherein the semiconductor cooling sheet includes pins adapted to be connected to a DC-to-DC converter. The embodiment of the invention realizes a thermal management mechanism of a small vehicle-mounted rechargeable energy storage system independent of liquid cooling and natural air cooling, significantly reduces complexity and pipe size, and can also takeinto account heat preservation and heat exchange performance.

Description

Technical field [0001] The present invention relates to the technical field of automobiles, and more specifically, to a thermal management system and a thermal management method of a small onboard rechargeable energy storage system (RESS). Background technique [0002] The latest national standard "Terms and Definitions of Automobiles and Trailer Types" (GB / T 3730.1-2001) has the following definitions for automobiles: powered by power, non-track bearing vehicles with 4 or more wheels, mainly used for : Carrying people and (or) goods; towing and carrying people and (or) goods; special purpose. Energy shortages, oil crises and environmental pollution intensified, which have a huge impact on people's lives, and are directly related to the sustainable development of the country's economy and society. Countries around the world are actively developing new energy technologies. [0003] Energy shortages, oil crises and environmental pollution intensified, which have a huge impact on peo...

AI Technical Summary

Problems solved by technology

However, the liquid cooling method requires an additional cold source, heat source and circulating fluid pipeline, which is too complicated and heavy for a small RESS system (such as a small lithium battery system used as a low-voltage starting power supply for a car); the natural air cooling method can only perform heat dissipation , unable to meet the requirements for use in high-temperature environments, and unable to take into account the thermal insulation and heat exchange performance of small RESS systems at the same time

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