Hpa majaw cooling system?
California mungdaw, James Wong kaw na ga san.
Ngai gaw GM-}Toyota NUMMI plant dingsa kaw bungli galaw nna, lani mi hta wan jak mawdaw langai galaw na hpe sha na lu ai. Masha ni gaw battery katsi ai lam hpe matut tsun nga ma ai. Tengman ai mabyin gaw hpa rai ta?
Chemical Engineering hte grup yin hte seng ai hpaji ninghkring kaba Richard Flagan gaw, Caltech hpe htai ai.
(Ngai gaw aerosol bungli law malawng bungli galaw ai, raitim, hpang jahtum aten hta JPL hte mawdaw company ni lawm ai battery project lahkawng de ngai hpe gang bang kau sai.)
Lithium-ion pack langai mi gaw, nang n-gun dat ai shaloi mau hpa katsi ai hpe shabyin ya ai. 3C charge hte 60 kWh pack gaw 15-20 kW hpe kabai kau lu ai. Dai gaw mawdaw a npu kaw hprawng hkawm ai shara kaji langai mi re. Dai hpe sha tawn da nna, lapran na cell ni gaw 60℃du hkra hkrat wa ai shaloi, 80 % charge hpe naw shakut nga ai. Asak gaw 45℃jan lawan ai hku hkrat wa ai majaw, katsi ai hpe shaw kau ra ai.
Ya gaw pack law malawng gaw 4-6 mm daram galu ai aluminum katsi ai plate ni hpe lang nna, kata kaw stamped channel langai mi nga ai. Nang gaw module lahkawng a lapran (sh) pouch ni a row shagu lapran na plate langai hpe slide galaw dat ai. Dai plate hpe cell npu de thermal paste ngu ai n-gun n rawng ai layer hte hpring nga ai. GM a Ultium plate ni gaw dai zawn rai nga ai. Tesla gaw 1865- hte 2170 ning laman na round tube hpe zigzag- kaw na spaghetti zawn re ai hka htung langai mi hta nbung laru langai mi hpe nbung laru hte nbung hpe nbung laru shapraw ai, raitim, kaja ai hku bungli galaw ai, raitim, dai gaw hpawng de na matu hkra machyi ai lam re. Texas kaw na 4680 pack nnan gaw, round tube a malai, grau dam lada ai ribbon de sa wa ai. Weld galaw loi ai.
Coolant gaw galoi mung 50/50 hka 50/50 daram rai nga ai. Prototype race mawdaw nkau mi gaw pure glycol (sh) silicone sau pyi lang ai, raitim dai hpe customers ni hpang de kadai mung n sa ya ai. Flow gaw, pack kaba langai a matu minit mi hta 10–20 litres law malawng nga ai. Dai pump gaw 12 V ntsa e galaw ai 400 W brushless arai kaji langai mi rai nna, hood npu (sh) frunk npu kaw nga ai.
Radiator gaw A/C condenser a man kaw dung nga ai. Freeway speed hta nbung law law lu la ai, raitim Barstow kaw 110℃F shani hta Supercharger kaw dung nna wan n-gun grai ja ai. Dai majaw Tesla gaw lai wa sai shaning loi mi hta octopus valve kaji hpe jat bang da ai{3}} Laika man gaw cabin A/C loop kaw na katsi ai refrigerant hpe teng sha katsi ai aten hta bang da ai.
Temperature chyam bra ai gaw sat ai wa re. 25℃hte katsi dik ai cell gaw 40℃rai yang nang gaw pack a cycle prat hta 15–20 % sum mat na re. Dai majaw inlet manifold gaw flow hpe maren mara garan ra ai. Company nkau mi gaw, nsam kaji ni hpe branch langai hte langai hta galaw ma ai. Kaga ni gaw channel ni hpe galu nna hkum hkrang n-gun rawng ai majaw pressure drop gaw maren mara lwi ai lam hpe shabyin ya ai. BYD a blade cell pack gaw, cell a galu kaba ai jut hku nna, lawu na- gaw grau kaja ai hkrang bung sumla ni hpe hkap la ai.
Katsi ai nbung laru gaw 1999 ning hta kadai mung n tsun shaga ai daw re. Dai majaw, ya aten hta katsi ai loop langai sha, katsi ra sai. 3–5 kW PTC heater gaw hka htung kata (sh) pump ngut ai hpang hkra maga de dung nga ai. BMS gaw preheat aten hta hawk zawn cell voltage ni hpe yu nga ai.
Pressure gaw 1–1.5 bar gauge rai nga ai. 115–120℃daram hta hka ja ai shara hpe n-gun jaw ai majaw, cell langai mi gaw mai tsai wa na matu dawdan ai rai yang, steam pockets ni hpe galoi mung n lu la ai.
Anhte gaw lai wa sai shaning hta JPL kaw 30{9}}cell module hpe gat ai. Katsi mat ai hte rau 25℃kaw nna 65℃de 200 A pru wa ai. 12 L/min hte pump hpe hpaw dat yang 38℃hta n-gun rawng wa na re. Dai majaw, minit 8 hte n mai byin ai-dai majaw, grai sawng ai pack shagu hta, hka lum ai lam nga ai.
Dai gaw madung sumla re. Details ni gaw model shaning shagu galai shai ai, raitim physics gaw n galai shai ai.
