적외선 열화상 기법을 이용한 물류이송 자동화 로봇용 리튬이온 배터리팩 방열 설계 및 성능평가에 관한 연구

Abstract

The second logistics revolution in distribution centers, factories, hospitals, airports, restaurants, etc. Logistics robot use has rapidly increased 24 hours of continuous operation, even a battery that is used as the rapid development of technologies that can dramatically increase the uptime of the production equipment Various and high-level technology development is urgently required. In the past, batteries were simply used in a full discharge or full charge method, but as autonomous driving becomes possible, rapid charging using a short time and wireless charging technology that can be charged while moving are required. Logistics robots have a wide variety of shapes depending on the usage, and can flexibly cope with the battery design for each type, and the size of the battery must be small but the energy density must be increased.

In this study, we propose a heat dissipation design and performance evaluation to improve heat generation that may occur when using high energy density, continuous rapid charging (4C-rate) and continuous high power (2C-rate) of an automated robot battery pack for logistics transportation. It is intended to be utilized in the development of battery technology for automated logistics robots in line with the expansion of the logistics robot market by improving the speed and efficiency of logistics equipment operation by improving the fire risk and battery performance degradation problems caused by heat generation.

The cell holder used in the existing logistics transfer robot battery was designed to be inserted at 1mm intervals between cells, but the cell holder was designed to be 1.5mm in order to increase the natural air conditioning effect and reduce the heat increase rate at high output. A heat dissipation sheet of the battery pack size, weight, and price as a way to get the radiation without the use of water-cooling or air-cooling method in order to increase competitiveness in terms of effect Graphite Sheet (high temperature diffusion for the graphite sheet) and the silicon material of was additionally applied. CASE design to increase heat dissipation performance increased the heat transfer power by changing the thickness of the internal structure and removing unnecessary structures and attaching a heat sink, and improved heat circulation by changing the cell stack structure and increasing the height of the product.

Through this study, the heat dissipation performance of the lithium-ion battery pack for the logistics and transport automation robot to which the heat dissipation optimal design was applied was compared and verified, and the excellent heat dissipation performance was confirmed. It is intended to be utilized in the development of battery technology for automated logistics robots in line with the expansion of the logistics robot market by increasing the speed and efficiency of logistics equipment operation by improving the risk of fire due to heat generation and the resulting degradation of battery performance.