๊ด€๋ฆฌ ๋ฉ”๋‰ด

๋ชฉ๋ก๐Ÿ”‹ ์ด์ฐจ ์ „์ง€ (10)

Done is Better Than Perfect

โ˜„๏ธ ๋ฐฐํ„ฐ๋ฆฌ์˜ Stoichiometry parameter

๐Ÿšฉ ๋ฐฐํ„ฐ๋ฆฌ์—์„œ Stoichiometry(ํ™”ํ•™์–‘๋ก )๋ž€?๋ฐฐํ„ฐ๋ฆฌ์˜ ์ˆ˜๋ช…๊ณผ ์„ฑ๋Šฅ์€ ์‹œ๊ฐ„์ด ์ง€๋‚จ์— ๋”ฐ๋ผ ์ ์ง„์ ์œผ๋กœ ์ €ํ•˜๋ฉ๋‹ˆ๋‹ค.์ด๋ฅผ ๋ฐฐํ„ฐ๋ฆฌ ์—ดํ™”(degradation)๋ผ๊ณ  ํ•˜๋ฉฐ, ์—ดํ™”๊ฐ€ ์ง„ํ–‰๋˜๋ฉด์„œ ๋ฐฐํ„ฐ๋ฆฌ ๋‚ด๋ถ€์˜ ๋‹ค์–‘ํ•œ ์ „๊ธฐํ™”ํ•™์  ํŠน์„ฑ์ด ๋ณ€ํ™”ํ•˜๊ฒŒ ๋ฉ๋‹ˆ๋‹ค.ํŠนํžˆ, ๋ฐฐํ„ฐ๋ฆฌ์˜ ์ฃผ์š” ๊ตฌ์„ฑ ์š”์†Œ์ธ ์–‘๊ทน๊ณผ ์Œ๊ทน ๋‚ด ๋ฆฌํŠฌ ์ด์˜จ ๋†๋„์˜ ๋ณ€ํ™”(์ฆ‰, Stoichiometry)๋Š” ์—ดํ™” ๊ณผ์ •์—์„œ ์ค‘์š”ํ•œ ์—ญํ• ์„ ํ•ฉ๋‹ˆ๋‹ค. Stoichiometry(ํ™”ํ•™์–‘๋ก )๋Š” ์ผ๋ฐ˜์ ์œผ๋กœ ํ™”ํ•™ ๋ฐ˜์‘์—์„œ ๋ฐ˜์‘๋ฌผ๊ณผ ์ƒ์„ฑ๋ฌผ ์‚ฌ์ด์˜ ์ •๋Ÿ‰์  ๊ด€๊ณ„๋ฅผ ๋‹ค๋ฃจ๋Š” ๊ฐœ๋…์ด์ง€๋งŒ, ๋ฐฐํ„ฐ๋ฆฌ์—์„œ๋Š” ์ „๊ทน(์–‘๊ทน·์Œ๊ทน) ๋‚ด ๋ฆฌํŠฌ ์ด์˜จ ๋†๋„์˜ ์ •๋Ÿ‰์  ๋น„์œจ์„ ์˜๋ฏธํ•ฉ๋‹ˆ๋‹ค.์ถฉ·๋ฐฉ์ „ ๊ณผ์ •์—์„œ ์ „๊ทน ๋‚ด ๋ฆฌํŠฌ ๋†๋„๊ฐ€ ๋ณ€ํ•˜๋ฉฐ, ์ด๋Ÿฌํ•œ Stoichiometry ๋ณ€ํ™”๋Š” ๋ฐฐํ„ฐ๋ฆฌ์˜ ์ „์•• ํŠน์„ฑ, ํ™•์‚ฐ ์†๋„, ๊ทธ๋ฆฌ๊ณ ..

PyBAMM์˜ ํŒŒ๋ผ๋ฏธํ„ฐ ์ €์žฅ & ์—ดํ™” ํŒŒ๋ผ๋ฏธํ„ฐ ๋ถ„์„

๋ฐฐํ„ฐ๋ฆฌ์˜ ์—ดํ™”์— ๋ฏธ์น˜๋Š” ํŒŒ๋ผ๋ฏธํ„ฐ๋“ค์˜ ์˜ํ–ฅ์„ ์•Œ์•„๋ณด๊ธฐ ์œ„ํ•ด, ๋ฐฐํ„ฐ๋ฆฌ ์‹œ๋ฎฌ๋ ˆ์ด์…˜ ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ์ธ PyBaMM์— ๊ธฐ๋ณธ ๋‚ด์žฅ๋˜์–ด ์žˆ๋Š” parameter set์„ ๋ถˆ๋Ÿฌ์™€ ์—ดํ™”์˜ ์š”์†Œ(์˜ˆ: Li-plating, LAM, SEI ๋“ฑ)์— ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ํŒŒ๋ผ๋ฏธํ„ฐ๋“ค์„ ๋ถ„๋ฅ˜ํ•ด๋ณด์•˜์Šต๋‹ˆ๋‹ค.  ๐Ÿšฉ PyBaMM ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ์˜ ํŒŒ๋ผ๋ฏธํ„ฐ ์ €์žฅ OKane2022 parameter set์„ ๋ถˆ๋Ÿฌ์™€ ๊ฐ’์„ ํ™•์ธํ•˜๊ธฐ ์œ„ํ•˜์—ฌ Excel ํŒŒ์ผ๋กœ ์ €์žฅํ•˜์˜€์Šต๋‹ˆ๋‹ค.OKane202 parameter๋Š” LG M50 cell(NMC)์„ ๋Œ€์ƒ์œผ๋กœ ํ•œ ํŒŒ๋ผ๋ฏธํ„ฐ๋กœ, ๋…ผ๋ฌธ O'Kane et al [1]์—์„œ Chen et al [2]๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ์ž‘์„ฑ๋˜์—ˆ์Šต๋‹ˆ๋‹ค. (์ถœ์ฒ˜: PyBAMM) ํ•„์ž๋Š” NMC ์˜ ํŒŒ๋ผ๋ฏธํ„ฐ ์…‹์— ๋Œ€ํ•œ ์ •๋ณด๋ฅผ ํŒŒ์•…ํ•˜๊ณ ์ž OKane2022 paramet..

[๋…ผ๋ฌธ ๋ฆฌ๋ทฐ] ๐Ÿค–๐Ÿ”Œ ๊ฐ•ํ™”ํ•™์Šต์„ ์‚ฌ์šฉํ•œ ์—ดํ™” ์ตœ์†Œํ™” ๊ธ‰์† ์ถฉ์ „ ํ”„๋กœํŒŒ์ผ

๐Ÿ”—  MSCC-DRL: Multi-Stage constant current based on deep reinforcement learning for fast charging of lithium ion batteryJournal of Energy Storage, 2024 ์ „๊ธฐ์ฐจ(EV) ์‹œ์žฅ์˜ ๊ธ‰์„ฑ์žฅ๊ณผ ํ•จ๊ป˜ ๊ทนํ•œ ๊ธ‰์† ์ถฉ์ „(Extreme Fast Charging, XFC)์— ๋Œ€ํ•œ ํ•„์š”์„ฑ์ด ์ ์  ๋” ์ปค์ง€๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. ํŠนํžˆ, ๋ฐฐํ„ฐ๋ฆฌ๋ฅผ 10~15๋ถ„ ๋‚ด์— 80% SOC(State of Charge)๊นŒ์ง€ ์ถฉ์ „ํ•˜๋Š” ๊ฒƒ์ด ์—…๊ณ„์˜ ์ฃผ์š” ๋ชฉํ‘œ๋กœ ์„ค์ •๋˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. ํ•˜์ง€๋งŒ ๊ธ‰์† ์ถฉ์ „์„ ์ง„ํ–‰ํ•  ๊ฒฝ์šฐ, ๋ฐฐํ„ฐ๋ฆฌ ๋‚ด๋ถ€ ์ƒํƒœ๊ฐ€ ๊ธ‰๊ฒฉํ•˜๊ฒŒ ๋ณ€๋™ํ•˜๋ฉด์„œ ๋ฐฐํ„ฐ๋ฆฌ์˜ ์—ดํ™”๋„ ๋น ๋ฅด๊ฒŒ ์ง„ํ–‰๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ๋”ฐ๋ผ์„œ, ๋ฐฐํ„ฐ๋ฆฌ์˜ ์—ดํ™”๋ฅผ ์ตœ์†Œํ™”ํ•˜๋ฉด์„œ๋„ ๋น ..

[๋…ผ๋ฌธ ๋ฆฌ๋ทฐ] ๋ฐฐํ„ฐ๋ฆฌ ์—ดํ™”์˜ ํ•ต์‹ฌ ๋ฌธ์ œ (key issue of the lithium ion battery degradation)

๐Ÿ“‘ A review on the key issues of the lithium ion battery degradation among the whole life cycle eTransportation 1 (2019)citations : 1009  [ ๊ฐ„๋‹จ ์š”์•ฝ ]์ด ๋…ผ๋ฌธ์€ ๋ฆฌํŠฌ ์ด์˜จ ๋ฐฐํ„ฐ๋ฆฌ์˜ ์ „์ฒด ์ˆ˜๋ช…์ฃผ๊ธฐ์— ๊ฑธ์นœ ์—ดํ™”(degradation) ์ด์Šˆ๋ฅผ ์ข…ํ•ฉ์ ์œผ๋กœ ์ •๋ฆฌํ•œ ๋ฆฌ๋ทฐ ๋…ผ๋ฌธ๋ฐฐํ„ฐ๋ฆฌ ๋‚ด๋ถ€ ์—ดํ™” ๋ฉ”์ปค๋‹ˆ์ฆ˜์— ๋Œ€ํ•œ ์„ค๋ช… - ์–‘๊ทน/์Œ๊ทน ์žฌ๋ฃŒ๋ณ„ ์—ดํ™” ์›์ธ ๋ถ„์„๋ฐฐํ„ฐ๋ฆฌ ์—ดํ™”์— ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ์š”์ธ๋“ค์„ค๊ณ„(design) ๋‹จ๊ณ„์—์„œ์˜ ์˜ํ–ฅ: ์žฌ๋ฃŒ, ์ „๊ทน, ์…€, ์‹œ์Šคํ…œ ๋ ˆ๋ฒจ ์„ค๊ณ„์ œ์กฐ(manufacture) ๋‹จ๊ณ„์—์„œ์˜ ์˜ํ–ฅ: ์ „๊ทน ์ œ์ž‘, ์…€ ์กฐ๋ฆฝ, ์ „ํ•ด์งˆ ์ฃผ์ž…, ํ˜•์„ฑ ๊ณต์ • ๋“ฑ์‚ฌ์šฉ(application) ๋‹จ๊ณ„์—์„œ์˜ ์˜ํ–ฅ: ์˜จ๋„, S..

[ ์ด์ฐจ์ „์ง€ ๋™ํ–ฅ ํŒŒ์•… ] ์ „๊ธฐ ์ž๋™์ฐจ ๋ฐฐํ„ฐ๋ฆฌ ์ œ์กฐ์‚ฌ ๊ณต๊ฐœ

โœ… ๋™ํ–ฅ ํŒŒ์•… : ์ „๊ธฐ์ฐจ ์‚ฌ๊ณ  ์ฆ๊ฐ€๋กœ ์ด์ฐจ์ „์ง€ ์ œ์กฐ์‚ฌ์— ๋Œ€ํ•œ ๊ด€์‹ฌ ์ฆ๊ฐ€์ตœ๊ทผ ์ „๊ธฐ์ฐจ ํ™”์žฌ ์‚ฌ๊ณ ์™€ ๊ด€๋ จํ•œ ๋‰ด์Šค๊ฐ€ ์‹ฌ์‹ฌ์น˜ ์•Š๊ฒŒ ๋“ค๋ ค์˜จ๋‹ค.ํ™”์žฌ์˜ ์›์ธ์œผ๋กœ ๋ฐฐํ„ฐ๋ฆฌ๊ฐ€ ์ฃผ๋ชฉ๋ฐ›๊ณ  ์žˆ๋‹ค.ํ™”์žฌ ์ฐจ๋Ÿ‰์˜ ๋Œ€๋ถ€๋ถ„์ด ์ค‘๊ตญ์‚ฐ ๋ฐฐํ„ฐ๋ฆฌ๋ฅผ ์‚ฌ์šฉํ•œ ๊ฒƒ์œผ๋กœ ์•Œ๋ ค์ ธ, ์ „๊ธฐ ์ž๋™์ฐจ์˜ ๋ฐฐํ„ฐ๋ฆฌ ์ œ์กฐ์—…์ฒด์— ๋Œ€ํ•œ ๊ดŒ์‹ฌ๋„๊ฐ€ ๋†’์•„์กŒ๋‹ค.์ •๋ถ€๋Š” ์ „๊ธฐ์ฐจ ์ œ์กฐ์‚ฌ์— ๋ฐฐํ„ฐ๋ฆฌ ์ •๋ณด ๊ณต๊ฐœ๋ฅผ ๊ถŒ๊ณ ํ–ˆ๋‹ค.  โœ… ํ•œ๊ตญ๊ตํ†ต์•ˆ์ „๊ณต๋‹จ : ์ž๋™์ฐจ ์ œ์ž‘์‚ฌ ๋ฐฐํ„ฐ๋ฆฌ ์ œ์กฐ์‚ฌ ์•ˆ๋‚ดhttps://www.kotsa.or.kr/portal/bbs/notice_view.do?bbscSeqn=18186&menuCode=05010100 ์‚ฌ๋žŒ ์ค‘์‹ฌ ๊ตํ†ต์•ˆ์ „์„ ์„ ๋„ํ•˜๋Š” ์„ธ๊ณ„ ์ตœ๊ณ ์˜ ์ „๋ฌธ๊ธฐ๊ด€ - TSํ•œ๊ตญ๊ตํ†ต์•ˆ์ „๊ณต๋‹จ์‚ฌ๋žŒ ์ค‘์‹ฌ ๊ตํ†ต์•ˆ์ „์„ ์„ ๋„ํ•˜๋Š” ์„ธ๊ณ„ ์ตœ๊ณ ์˜ ์ „๋ฌธ๊ธฐ๊ด€, ์ž๋™์ฐจ๊ฒ€์‚ฌ, ์ž๋™์ฐจ์•ˆ์ „์—ฐ๊ตฌ, ์‚ฌ์—…์šฉ ์ž๋™..