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    ์ตœ๊ทผ ๋Œ“๊ธ€

    ์ตœ๊ทผ ๊ธ€

    ํ‹ฐ์Šคํ† ๋ฆฌ

    hELLO ยท Designed By ์ •์ƒ์šฐ.
    Dev.Op

    Yollow ๐Ÿ“š

    ์ „๊ธฐ์ฐจ ์ดํ•ด๋ฅผ ์œ„ํ•œ ๋ฐฐํ„ฐ๋ฆฌ ์ƒ์‹  1
    ๐Ÿง์ „๊ธฐ์ฐจ

    ์ „๊ธฐ์ฐจ ์ดํ•ด๋ฅผ ์œ„ํ•œ ๋ฐฐํ„ฐ๋ฆฌ ์ƒ์‹ 1

    2021. 11. 11. 20:37
    ๋ฐ˜์‘ํ˜•
    ์•ˆ๋…•ํ•˜์„ธ์š” 

    ๊ณต๋ถ€ํ•˜๋Š” ์›…์ด์ž…๋‹ˆ๋‹ค.

     

    ํ•™๊ต์—์„œ 2๋…„๊ฐ„ ์ž์ž‘์ฐจ๋™์•„๋ฆฌ๋ฅผ ํ•˜๋ฉด์„œ, ์ „๊ธฐ์™€ ์ฐจ๋Ÿ‰ ์ด 2๊ฐ€์ง€์— ํ‘น ๋น ์ ธ์‚ด์•˜์—ˆ์Šต๋‹ˆ๋‹ค. ํ•œ๋•Œ HV ์ „๊ธฐ์ฐจ ํŒ€์žฅ๋„ ํ–ˆ์ง€๋งŒ, ์ด์ œ๋Š” ๋‹ค๋ฅธ ๊ณต๋ถ€๋ฅผ ํ•˜๋А๋ผ ๋งŽ์ด ์žŠ๊ณ  ์ง€๋ƒˆ๋Š”๋ฐ์š”. ์ด๋ฒˆ์—๋Š” ์ „๊ธฐ์ฐจ์— ๋Œ€ํ•ด์„œ, ํŠนํžˆ ๋ฐฐํ„ฐ๋ฆฌ์— ๋Œ€ํ•ด ๋‹ค๋ค„๋ณด๊ณ ์ž ํ•ฉ๋‹ˆ๋‹ค.

     

    ์ „๊ธฐ์ฐจ๋Š” ์šฐ๋ฆฌ ์ƒํ™œ์˜ ์ผ๋ถ€๊ฐ€ ๋˜์–ด๊ฐ€๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. ์š”์ฆ˜๋”ฐ๋ผ ๋ถ€์ฉ ๊ธธ๊ฐ€์— ์•„์ด์˜ค๋‹‰5, ํ…Œ์Šฌ๋กœ ๋ชจ๋ธ3, ๊ธฐ์•„ ev6 ๋“ฑ ๋งŽ์€ ์ „๋™์ฐจ๋“ค์ด ๋„๋กœ์— ๋Š˜์–ด๋‚˜๊ธฐ ์‹œ์ž‘ํ–ˆ์Šต๋‹ˆ๋‹ค.  ํ•ฉ๋ฆฌ์ ์ด๊ณ , ๊ฒฝ์ œ์„ฑ์„ ๊ฐ–์ถ”๊ณ  ์žˆ๊ณ , ์ด์งˆ์ ์ด์ง€ ์•Š์€ ์ฃผํ–‰๊ฐ ๋“ฑ ์ „๊ธฐ์ฐจ๋Š” ๊ณ ์œ ์˜ ํŠน์ง• ๋•๋ถ„์— ๋งŽ์€ ์ด๋“ค์—๊ฒŒ ๊ด€์‹ฌ์„ ๋„๋Š”๋ฐ๋Š” ์„ฑ๊ณตํ•œ ๊ฒƒ ๊ฐ™์Šต๋‹ˆ๋‹ค.

    ๊ธฐ์•„ EV6 [์ถœ์ฒ˜ : ์—ฐํ•ฉ๋‰ด์Šค]

    ์ด๋Ÿฐ ์ „๊ธฐ์ฐจ๋Š” ๋‚ด์—ฐ๊ธฐ๊ด€ ์ž๋™์ฐจ์™€ ๋งŽ์€ ๋ถ€๋ถ„์ด ๋‹ค๋ฆ…๋‹ˆ๋‹ค. ๊ตฌ๋™ ์›๋ฆฌ๋Š” ๋ฌผ๋ก , ์šด์ „ํ•˜๊ณ  ๊ด€๋ฆฌํ•˜๋Š” ๋ฐฉ๋ฒ•๊นŒ์ง€ ๋‹ค์–‘ํ•œ ์˜์—ญ์—์„œ ์ฐจ์ด๋ฅผ ๊ฐ–๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. ์ „๊ธฐ์ฐจ์— ์ด์ œ ๋ง‰ ๊ด€์‹ฌ์„ ๊ฐ–๊ฒŒ ๋˜์—ˆ๋‹ค๋ฉด ๊ทธ ‘๋‹ค๋ฆ„’์„ ์ดํ•ดํ•  ํ•„์š”๊ฐ€ ์žˆ์Šต๋‹ˆ๋‹ค. ์ „๊ธฐ์ฐจ๋ผ๊ณ  ๋ณต์žกํ•œ ๊ฑด ์—†์Šต๋‹ˆ๋‹ค. ํŠน์„ฑ์„ ์•Œ๋ฉด ์˜คํžˆ๋ ค ์ดํ•ด๊ฐ€ ์‰ฝ์Šต๋‹ˆ๋‹ค. ํŠนํžˆ ์ „๊ธฐ์ฐจ ๋‚ด๋ถ€์— ๊ตฌ๋™์˜ ํ•ต์‹ฌ์ด ๋˜๋Š” ๋ฐฐํ„ฐ๋ฆฌ์— ๋Œ€ํ•ด ์•Œ์•„๋ณด๊ณ  ์žํ•ฉ๋‹ˆ๋‹ค. ๊ทธ๋ฆฌ๊ณ  ๋ฌด์—‡๋ณด๋‹ค๋„, ๋ฐฐํ„ฐ๋ฆฌ๋Š” ํ•ด์™ธ์—์„œ๋„ ๋งŽ์ด ์‚ฌ์šฉ๋˜๊ธฐ ๋•Œ๋ฌธ์— ์˜์–ด๋กœ ๋˜์–ด ์žˆ์Šต๋‹ˆ๋‹ค. ์˜ˆ๋ฅผ๋“ค์–ด, C-rate๋งŒ ํ•ด๋„, ํ•œ๊ตญ๋ง๋กœ๋Š” ์ „ํ˜€ ๊ฐ์ด ์˜ค์ง€ ์•Š์ง€๋งŒ, ๋ฐฉ์ „์œจ๋กœ์„œ ์–ผ๋งˆ๋‚˜ ๋งŽ์€ ์–‘์˜ ์ „๊ธฐ๋ฅผ ๋ฐฉ์ถœํ•  ์ˆ˜ ์žˆ๋Š”์ง€๋ฅผ ์•Œ๊ฒŒ ํ•ด์ฃผ๋Š” ์ค‘์š”ํ•œ ํ‰๊ฐ€์ง€ํ‘œ ์ค‘ ํ•˜๋‚˜์ž…๋‹ˆ๋‹ค. 

     

    ๊ทธ๋Ÿผ ํฌ์ŠคํŒ… ์‹œ์ž‘ํ•ด๋ณด๋„๋ก ํ•˜๊ฒ ์Šต๋‹ˆ๋‹ค.

     

     


    Battery Basics

    ๋ฐฐํ„ฐ๋ฆฌ ๊ธฐ์ดˆ ์ƒ์‹


    Cell, modules, and packs 

    – Hybrid and electric vehicles have a high voltage battery
    pack that consists of individual modules and cells organized in series and parallel. A cell is
    the smallest, packaged form a battery can take and is generally on the order of one to six
    volts. A module consists of several cells generally connected in either series or parallel. A
    battery pack is then assembled by connecting modules together, again either in series or
    parallel.

    ๊ฐœ๋ณ„ ๋ชจ๋“ˆ๊ณผ ์…€๋กœ ๊ตฌ์„ฑ๋œ ํŒฉ์„ ์ง๋ ฌ ๋ฐ ๋ณ‘๋ ฌ๋กœ ๊ตฌ์„ฑํ•ฉ๋‹ˆ๋‹ค. ์…€์€ ๋ฐฐํ„ฐ๋ฆฌ์˜ ๊ฐ€์žฅ ์ž‘์€ ๋‹จ์œ„์ž…๋‹ˆ๋‹ค
    ๊ฐ€์žฅ ์ž‘๊ณ , ํฌ์žฅ๋œ ํ˜•ํƒœ์˜ ๋ฐฐํ„ฐ๋ฆฌ๋Š” ์ผ๋ฐ˜์ ์œผ๋กœ ์…€๋กœ์„œ 1~ 6๊ฐœ ๋˜๋Š” ๊ทธ ์ด์ƒ์œผ๋กœ ๋ฌถ์—ฌ์„œ ๋ชจ๋“ˆ์„ ๊ตฌ์„ฑํ•˜๊ฒŒ ๋ฉ๋‹ˆ๋‹ค,
    ๋ชจ๋“ˆ์€ ์ผ๋ฐ˜์ ์œผ๋กœ ์ง๋ ฌ ๋˜๋Š” ๋ณ‘๋ ฌ๋กœ ์—ฐ๊ฒฐ๋œ ์—ฌ๋Ÿฌ ๊ฐœ์˜ ์…€๋กœ ๊ตฌ์„ฑ๋ฉ๋‹ˆ๋‹ค. 
    ๊ทธ๋Ÿฐ ๋‹ค์Œ ๋ชจ๋“ˆ์„ ์ง๋ ฌ ๋˜๋Š” ๋ณ‘๋ ฌ๋กœ ์—ฐ๊ฒฐํ•˜์—ฌ ๋ฐฐํ„ฐ๋ฆฌ ํŒฉ์„ ์กฐ๋ฆฝํ•ฉ๋‹ˆ๋‹ค.

    [์ถœ์ฒ˜ : ์‚ผ์„ฑ SDI]


    Battery Classifications 

    – Not all batteries are created equal, even batteries of the same
    chemistry. The main trade-off in battery development is between power and energy:
    batteries can be either high-power or high-energy, but not both. Often manufacturers will
    classify batteries using these categories. Other common classifications are High Durability,
    meaning that the chemistry has been modified to provide higher battery life at the expense
    of power and energy.

    ๋ชจ๋“  ๋ฐฐํ„ฐ๋ฆฌ๊ฐ€ ๋™์ผํ•œ ํ™”ํ•™์„ฑ๋ถ„์˜ ๋ฐฐํ„ฐ๋ฆฌ๋กœ ๋งŒ๋“ค์–ด์ง€๋Š” ๊ฒƒ์€ ์•„๋‹™๋‹ˆ๋‹ค. ๋ฐฐํ„ฐ๋ฆฌ ๊ฐœ๋ฐœ์˜ ์ฃผ์š” ๋‹จ์ ์€ ์ „๋ ฅ๊ณผ ์—๋„ˆ์ง€์ž…๋‹ˆ๋‹ค. ๋ฐฐํ„ฐ๋ฆฌ๋Š” ๊ณ ์ถœ๋ ฅ ๋˜๋Š” ๊ณ ์—๋„ˆ์ง€์ผ ์ˆ˜ ์žˆ์ง€๋งŒ ๋‘˜ ๋‹ค ์•„๋‹ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์ข…์ข… ์ œ์กฐ์—…์ฒด๋Š” ์ด๋Ÿฌํ•œ ๋ฒ”์ฃผ๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ๋ฐฐํ„ฐ๋ฆฌ๋ฅผ ๋ถ„๋ฅ˜ํ•ฉ๋‹ˆ๋‹ค. ๋‹ค๋ฅธ ์ผ๋ฐ˜์ ์ธ ๋ถ„๋ฅ˜๋Š” ๋†’์€ ๋‚ด๊ตฌ์„ฑ์ž…๋‹ˆ๋‹ค. ์ฆ‰, ์ „๋ ฅ๊ณผ ์—๋„ˆ์ง€๋ฅผ ์†Œ๋น„ํ•˜๋ฉด์„œ ๋” ๋†’์€ ๋ฐฐํ„ฐ๋ฆฌ ์ˆ˜๋ช…์„ ์ œ๊ณตํ•˜๋„๋ก ํ™”ํ•™ ๋ฌผ์งˆ์ด ์ˆ˜์ •๋˜์—ˆ๋‹ค๋Š” ์˜๋ฏธ์ž…๋‹ˆ๋‹ค.

    ์›ํ†ตํ˜• ๋ฆฌํŠฌ ์ด์˜จ ๋ฐฐํ„ฐ๋ฆฌ
    ํด๋ฆฌ๋จธ ๋ฆฌํŠฌ ์ด์˜จ ๋ฐฐํ„ฐ๋ฆฌ


    C- and E- rates

    – In describing batteries, discharge current is often expressed as a C-rate
    in order to normalize against battery capacity, which is often very different between
    batteries. A C-rate is a measure of the rate at which a battery is discharged relative to its
    maximum capacity. A 1C rate means that the discharge current will discharge the entire
    battery in 1 hour. For a battery with a capacity of 100 Amp-hrs, this equates to a discharge
    current of 100 Amps. A 5C rate for this battery would be 500 Amps, and a C/2 rate would
    be 50 Amps. Similarly, an E-rate describes the discharge power. A 1E rate is the discharge
    power to discharge the entire battery in 1 hour.

    – ๋ฐฐํ„ฐ๋ฆฌ๋ฅผ ์„ค๋ช…ํ•  ๋•Œ ๋ฐฉ์ „ ์ „๋ฅ˜๋Š” ๋ฐฐํ„ฐ๋ฆฌ ์šฉ๋Ÿ‰์— ๋Œ€ํ•ด ์ •์ƒํ™”ํ•˜๊ธฐ ์œ„ํ•ด C-๋ ˆ์ดํŠธ๋กœ ํ‘œํ˜„๋˜๋Š” ๊ฒฝ์šฐ๊ฐ€ ๋งŽ์œผ๋ฉฐ, ์ด๋Š” ๋ฐฐํ„ฐ๋ฆฌ๋งˆ๋‹ค ๋งค์šฐ ๋‹ค๋ฆ…๋‹ˆ๋‹ค. C-๋ ˆ์ดํŠธ๋Š” ์ตœ๋Œ€ ์šฉ๋Ÿ‰์— ๋น„๋ก€ํ•˜์—ฌ ๋ฐฐํ„ฐ๋ฆฌ๊ฐ€ ๋ฐฉ์ „๋˜๋Š” ์†๋„๋ฅผ ์ธก์ •ํ•œ ๊ฒƒ์ž…๋‹ˆ๋‹ค. 1C ์†๋„๋Š” ๋ฐฉ์ „ ์ „๋ฅ˜๊ฐ€ 1์‹œ๊ฐ„ ๋‚ด์— ๋ฐฐํ„ฐ๋ฆฌ ์ „์ฒด๋ฅผ ๋ฐฉ์ „์‹œํ‚จ๋‹ค๋Š” ๊ฒƒ์„ ์˜๋ฏธํ•ฉ๋‹ˆ๋‹ค. ์šฉ๋Ÿ‰์ด 100Amp-hr์ธ ๋ฐฐํ„ฐ๋ฆฌ์˜ ๊ฒฝ์šฐ ๋ฐฉ์ „ ์ „๋ฅ˜๋Š” 100Amp์ž…๋‹ˆ๋‹ค. ์ด ๋ฐฐํ„ฐ๋ฆฌ์˜ 5C ์†๋„๋Š” 500A์ด๊ณ  C/2 ์†๋„๋Š” 50A์ž…๋‹ˆ๋‹ค. ๋งˆ์ฐฌ๊ฐ€์ง€๋กœ, E-๋ ˆ์ดํŠธ๋Š” ๋ฐฉ์ „ ์ „๋ ฅ์„ ๋‚˜ํƒ€๋ƒ…๋‹ˆ๋‹ค. 1E ์†๋„๋Š” ์ „์ฒด ๋ฐฐํ„ฐ๋ฆฌ๋ฅผ 1์‹œ๊ฐ„ ์•ˆ์— ๋ฐฉ์ „์‹œํ‚ค๋Š” ๋ฐฉ์ „ ์ „๋ ฅ์ž…๋‹ˆ๋‹ค.

     

    ์ถœ์ฒ˜ : https://m.blog.naver.com/droneinfo/220948459856


    Secondary and Primary Cells

     – Although it may not sound like it, batteries for hybrid,plug-n, and electric vehicles are all secondary batteries. A primary battery is one that cannot be recharged. A secondary battery is one that is rechargeable.

    ๊ทธ๋ ‡๊ฒŒ ๋“ค๋ฆฌ์ง€๋Š” ์•Š์ง€๋งŒ ํ•˜์ด๋ธŒ๋ฆฌ๋“œ, ํ”Œ๋Ÿฌ๊ทธ ์•ค ๋ฐ ์ „๊ธฐ ์ž๋™์ฐจ์šฉ ๋ฐฐํ„ฐ๋ฆฌ๋Š” ๋ชจ๋‘ ๋ณด์กฐ ๋ฐฐํ„ฐ๋ฆฌ์ž…๋‹ˆ๋‹ค. ๊ธฐ๋ณธ ๋ฐฐํ„ฐ๋ฆฌ๋Š” ์žฌ์ถฉ์ „ํ•  ์ˆ˜ ์—†๋Š” ๋ฐฐํ„ฐ๋ฆฌ์ž…๋‹ˆ๋‹ค. ๋ณด์กฐ ๋ฐฐํ„ฐ๋ฆฌ๋Š” ์ถฉ์ „ ๊ฐ€๋Šฅํ•œ ๋ฐฐํ„ฐ๋ฆฌ์ž…๋‹ˆ๋‹ค.

     

     

    Battery Condition

    This section describes some of the variables used to describe the present condition of a battery.

    ์ด ์„น์…˜์—์„œ๋Š” ๋ฐฐํ„ฐ๋ฆฌ์˜ ํ˜„์žฌ ์ƒํƒœ๋ฅผ ์„ค๋ช…ํ•˜๋Š” ๋ฐ ์‚ฌ์šฉ๋˜๋Š” ๋ช‡ ๊ฐ€์ง€ ๋ณ€์ˆ˜์— ๋Œ€ํ•ด ์„ค๋ช…ํ•ฉ๋‹ˆ๋‹ค.


    State of Charge (SOC)(%)

    An expression of the present battery capacity as a percentage of maximum capacity. SOC is generally calculated using current integration to determine the change in battery capacity over time.

    ํ˜„์žฌ ๋ฐฐํ„ฐ๋ฆฌ ์šฉ๋Ÿ‰์„ ์ตœ๋Œ€ ์šฉ๋Ÿ‰์˜ ๋ฐฑ๋ถ„์œจ๋กœ ๋‚˜ํƒ€๋‚ธ ํ‘œํ˜„์ž…๋‹ˆ๋‹ค. SOC๋Š” ์ผ๋ฐ˜์ ์œผ๋กœ ์‹œ๊ฐ„์— ๋”ฐ๋ฅธ ๋ฐฐํ„ฐ๋ฆฌ ์šฉ๋Ÿ‰์˜ ๋ณ€ํ™”๋ฅผ ๊ฒฐ์ •ํ•˜๊ธฐ ์œ„ํ•ด ํ˜„์žฌ ํ†ตํ•ฉ์„ ์‚ฌ์šฉํ•˜์—ฌ ๊ณ„์‚ฐ๋ฉ๋‹ˆ๋‹ค.

     

     

    Depth of Discharge (DOD) (%) 

    The percentage of battery capacity that has been discharged expressed as a percentage of maximum capacity. A discharge to at least 80 %DOD is referred to as a deep discharge.

    ๋ฐฉ์ „๋œ ๋ฐฐํ„ฐ๋ฆฌ ์šฉ๋Ÿ‰์˜ ๋ฐฑ๋ถ„์œจ์€ ์ตœ๋Œ€ ์šฉ๋Ÿ‰์˜ ๋ฐฑ๋ถ„์œจ๋กœ ํ‘œ์‹œ๋ฉ๋‹ˆ๋‹ค. ์ตœ์†Œ 80%DOD๊นŒ์ง€์˜ ๋ฐฉ์ „์„ ์‹ฌ์ธต ๋ฐฉ์ „์œผ๋กœ ๋ถ€๋ฆ…๋‹ˆ๋‹ค.

     


    Terminal Voltage (V) 

    The voltage between the battery terminals with load applied.
    Terminal voltage varies with SOC and discharge/charge current.

    ๋ถ€ํ•˜๊ฐ€ ๊ฑธ๋ฆฐ ๋ฐฐํ„ฐ๋ฆฌ ๋‹จ์ž ์‚ฌ์ด์˜ ์ „์••์ž…๋‹ˆ๋‹ค.
    ๋‹จ์ž ์ „์••์€ SOC ๋ฐ ๋ฐฉ์ „/์ถฉ์ „ ์ „๋ฅ˜์— ๋”ฐ๋ผ ๋‹ค๋ฆ…๋‹ˆ๋‹ค.

     

     


    Open-circuit voltage (V)

    The voltage between the battery terminals with no load applied. The open-circuit voltage depends on the battery state of charge, increasing with state of charge.

    ๋ถ€ํ•˜๊ฐ€ ๊ฑธ๋ฆฌ์ง€ ์•Š๋Š” ๋ฐฐํ„ฐ๋ฆฌ ๋‹จ์ž ์‚ฌ์ด์˜ ์ „์••์ž…๋‹ˆ๋‹ค. ๊ฐœ๋ฐฉ ํšŒ๋กœ ์ „์••์€ ๋ฐฐํ„ฐ๋ฆฌ ์ถฉ์ „ ์ƒํƒœ์— ๋”ฐ๋ผ ๋‹ฌ๋ผ์ง€๋ฉฐ ์ถฉ์ „ ์ƒํƒœ์— ๋”ฐ๋ผ ์ฆ๊ฐ€ํ•ฉ๋‹ˆ๋‹ค.

     

     


    Internal Resistance

    The resistance within the battery, generally different for charging and discharging, also dependent on the battery state of charge. As internal resistance increases, the battery efficiency decreases and thermal stability is reduced as more of the charging energy is converted into heat.

     

    ๋ฐฐํ„ฐ๋ฆฌ ๋‚ด ์ €ํ•ญ์€ ์ผ๋ฐ˜์ ์œผ๋กœ ์ถฉ์ „ ๋ฐ ๋ฐฉ์ „ ์‹œ ๋‹ค๋ฅด๋ฉฐ ๋ฐฐํ„ฐ๋ฆฌ ์ถฉ์ „ ์ƒํƒœ์— ๋”ฐ๋ผ ๋‹ค๋ฆ…๋‹ˆ๋‹ค. ๋‚ด๋ถ€ ์ €ํ•ญ์ด ์ฆ๊ฐ€ํ•˜๋ฉด ์ถฉ์ „ ์—๋„ˆ์ง€๊ฐ€ ์—ด๋กœ ๋ณ€ํ™˜๋ ์ˆ˜๋ก ๋ฐฐํ„ฐ๋ฆฌ ํšจ์œจ์ด ๋–จ์–ด์ง€๊ณ  ์—ด ์•ˆ์ •์„ฑ์ด ์ €ํ•˜๋ฉ๋‹ˆ๋‹ค.

     

    https://www.scienceall.com/%EB%82%B4%EB%B6%80-%EC%A0%80%ED%95%ADinternal-resistance/

     

    ์ด์ƒ์ž…๋‹ˆ๋‹ค. ๊ธด ๊ธ€ ์ฝ์–ด์ฃผ์…”์„œ ๊ฐ์‚ฌํ•ฉ๋‹ˆ๋‹ค.

    ์ข‹์•„์š”์™€ ๊ตฌ๋…์€ ํฐ ํž˜์ด ๋ฉ๋‹ˆ๋‹ค!

    ๋ฐ˜์‘ํ˜•
    ์ €์ž‘์žํ‘œ์‹œ (์ƒˆ์ฐฝ์—ด๋ฆผ)

    '๐Ÿง์ „๊ธฐ์ฐจ' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€

    ์—๋””์Šจ ev ํ˜ธ์žฌ  (1) 2021.11.16
    ์š”์†Œ์ˆ˜ ๋Œ€๋ž€  (0) 2021.11.15
    ๋‚ด์—ฐ๊ธฐ๊ด€ OUT(feat. ํ•˜์ด๋ธŒ๋ฆฌ๋“œ์นด๋„?)  (0) 2021.11.04
    ์ „๊ธฐ์ฐจ ์—…์ฒด์˜ ๊ผผ์ˆ˜์™€ ์ดํ•ด๊ด€๊ณ„( feat.ํ…Œ์Šฌ๋ผ, ์‹ ์„ธ๊ณ„ ๋ฐฑํ™”์ ,ํ˜„๋Œ€์ฐจ)  (0) 2021.10.28
    [New Zealand Electric Car Real Fact] ์ „๊ธฐ์ฐจ ํ˜„์‹ค  (0) 2021.10.28
      '๐Ÿง์ „๊ธฐ์ฐจ' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€
      • ์—๋””์Šจ ev ํ˜ธ์žฌ
      • ์š”์†Œ์ˆ˜ ๋Œ€๋ž€
      • ๋‚ด์—ฐ๊ธฐ๊ด€ OUT(feat. ํ•˜์ด๋ธŒ๋ฆฌ๋“œ์นด๋„?)
      • ์ „๊ธฐ์ฐจ ์—…์ฒด์˜ ๊ผผ์ˆ˜์™€ ์ดํ•ด๊ด€๊ณ„( feat.ํ…Œ์Šฌ๋ผ, ์‹ ์„ธ๊ณ„ ๋ฐฑํ™”์ ,ํ˜„๋Œ€์ฐจ)
      Dev.Op
      Dev.Op
      Interest: CS, Drive

      ํ‹ฐ์Šคํ† ๋ฆฌํˆด๋ฐ”