Battery System Testing Hpa Rai Ta?
Field service guy gaw forklift gaw n-gun n rawng na re ngu shaga ai. BMS hpe lock galaw kau ai. Customer gaw battery hpe mara ai. Dai majaw, n-gun n rawng ai hka htung langai mi hta dung nga ai, nbung katsi ai lam npu de hkrat sum mat ai, dai system gaw, n-gun n rawng ai ni hpe pat kau na matu ningdang kau ai. Design galaw ai hte maren bungli galaw ai. Dai gaw battery system hpe chyam dinglik ai lam shi a bungli hpe chyam dinglik ai lam re.
Battery system chyam dinglik ai lam gaw, hpang jahtum lang ai wa a matu law malawng n mu lu ai lam masum hpe shinggrup da ai: shi hkum nan a hkum hkrang hpe n-gun jaw ai lam n galaw shi yang, tinang hkum hpe yu reng ai lam, n-gun n rawng ai lam hpe yu reng ai lam, n-gun n rawng ai lam n nga ai hpe madi madun ai interlock ev shana ai lam ni hpe galaw ai. Langai hte langai gaw, dai ginra hta lama ma n kaja ai majaw nga ai, law law lang gaw, madang masat da ai lam langai byin wa ai majaw, law law nga ai. GB 18384-2020 hta Miwa mung kaw ISO 6469-3 mungkan ting hta nga ai. Ndai ni gaw hpaji jaw ai lam n re.
Tinang hkum hpe gara hku mung n galaw shi yang, tinang hkum tinang{0}} Else
Electric forklift ntsa na key switch hpe hpaw dat ai shaloi, BMS gaw contactors ni hpe pat kau nna kaja dik htum hpe myit mada ai sha n-ga. Shawng nnan galaw ai sequence langai mi nga ai, law malawng gaw second manga npu hta ngut kre ai, kalang lang grau lawan ai. Dai system gaw cell hpung shagu hpe voltage hte temperature a matu san jep ai, mayam board ni gaw matut mahkai nga ai hpe jep yu nna, hpa hpe mung pat na matu shakut ai shaloi, contactor adhesion hpe sawk sagawn ai lam galaw ai.
Critical Operating Thresholds
Voltage Window
2.0V - 4.5V
Masha langai a shadawn sharam. Ndai range shinggan de gaw shamu shamawt ai lam hpe pat shingdang ya ai.
Temp Range
-40℃- 80 degree
Thermal byin ai lam ni hpe makawp maga na matu module shimlam shadawn sharam.
Voltage hkuwawt gaw ngang kang ai. Cell voltage gaw 2.0V hte 4.5V lapran dung ra ai (sh) pack gaw live n galaw ra ai. Module katsi ai shara gaw -40℃kaw nna 80℃du hkra rai nga ai. Ndai ni gaw spec sheet kaw na shaw la ai arbitrary nambat ni n re. Lawu na 2V ngu ai gaw cell langai hpe grai sung ai hku shapraw kau ai (sh) hkra machyi ai hpe tsun mayu ai, dai hku nna current hpe atik anang n ra sharawng ai. 4.5V a ntsa e grai kaba ai (sh) shadawn shadang n kaja ai hpe tsun mayu ai, gara hku mi rai rai, lama ma n kaja ai. Anhte gaw packs ni gaw 4.6V hta cell langai hte bai wa ai hpe mu yu sai, kaga ni gaw normal ni rai nga ai. Cell kata na n kaja ai lam ni hpe galaw ai shaloi, BMS gaw thermal mabyin n byin shi yang rim la ai.
Contactor adhesion hpe sawk sagawn ai lam hpe ahkyak ai aten du hkra n yu n hkan galaw ai. Ndai chyam dinglik ai lam gaw, contactor hpe hpaw da ai shaloi, contactor terminal ni hpe shadawn nna, voltage hpe shadawn ai hku nna bungli galaw ai. Voltage present ngu ai gaw current lwi nga ai hpe tsun mayu ai, lachyum gaw, shawng na high-ya ai lamang hta, matut mahkai ai wa gaw, n-gun n rawng ai sha, weld galaw ai. Welded contactor hpe n lu hkang ai. Pack hpe shim lum ai hku n mai garan ai. N hpaw na matu ningdang ai forklift gaw myit n pyaw hpa rai nga ai. N pat shingdang ai forklift gaw hkrit tsang hpa rai nga ai.
Ndai zawn re ai aten gaw bungli galaw ai: BMU gaw 0.1 seconds la nna, self-check state de shang wa ai, masa yawng hpe lai di ai. Yawng mayawng gaw second 5 laman hta lai mat wa yang, main contator ni hpe pat kau ai. N rai yang, shawng nnan na mara n nga yang, pack gaw matut mahkai lam n nga ai. Nkau customers ni gaw startup delay a majaw marawn ma ai. Anhte tsun dan ai gaw, battery wan hkru ai hta second manga gaw manu n hkrat ai.
Insulation hpe yu reng ai lam gaw, N-gun n-gun n-nga ai.
Mawdaw chassis hte shingdaw yang, voltage grai law ai battery system ni gaw lwi nga ai. DC Bus hte ground lapran hta myit mada ai matut mahkai lam n nga ai. Insulation gaw n-gun yawm wa ai shaloi- n-ga, n-gun rawng ai, n-gup n-gu n-gun yawm ai, awu asin byin ai-current gaw chassis de lwi hpang wa ai. Shut ai aten hta shut ai hpe hkra yu nna dai circuit hta nang lawm mat ai. Ndai lam a majaw GB 18384-2020 hta system volt langai hta n law htum 100Ω ra ai. 500V pack hpe n law htum 50kΩ ra ai, hpun hte chassis ginsup shara langai ngai.
Ndai masat masa gaw IEC/TR 60479-1 kaw na pru wa ai rai nna, dai gaw 2mA hpe shinggyim masha ni wan n-gun hpe hkam la ai lam hpe npawt nhpang hku nna masat da ai. Dai lawu de matut nna leakage galaw nna, contact gaw kalang ta n hkrit tsang ai. Dai hta jan nna, lam ni grau sawng wa ai. Dai madang gaw bungli galaw na matu engineering margin hpe jaw ya ai.
Mawdaw jai lang ai lam hta insulation hpe ninghkap lu ai atsam hpe shadawn na matu ladat mali nga ai. Auxiliary voltage ladat gaw shinggan na 110V DC source ra ai, system hpe grau sawng shangun ai, gara pole hta mara nga ai hpe n chye ginhka lu ai. Ya aten na sensor ladat gaw, n-gun n-gun lwi ai shaloi sha bungli galaw ai, pre{3}}}}}}start check ni hta akyu n nga ai. Bridge hpe ninghkap ai ladat gaw ya aten hta mawdaw law malawng lang ai. DC bus hte chassis lapran na calibrates ni hpe matut mahkai nna, configurations lapran na galai shai ai lam, byin pru wa ai voltage garan gachyan ai lam ni kaw na insulation hpe sawn la u. Operation galaw ai aten hta matut manoi bungli galaw ai raitim, kaja ai hte n kaja ai pole ninghkap ai lam ni maren sha byin ai shaloi, myi nmu ai shara nga ai.
Dai voltage injection ladat gaw, dai myi kyaw ai shara hpe, npu na- n-gun n law ai hpe galai shai kau ai hku nna, dai myi nmu ai shara hpe gram lajang ya ai AC masat kumla{1}}}onual hku nna, 10 kaw nna 100Hz{4}}}}}}}}} Laika nhpang tsaw ai voltage circuit hte, chassis reference hta mahtai hpe shadawn ai. Insulation hten za ai lam hta symmetry hpe n sawn ai sha bungli galaw ai. Battery hpe load kaw na daw kau ai shaloi pyi bungli galaw ai. Grau nna galaw sa wa na matu grau sawng ai, grau hkrak ai mahtai ni.
Gara ladat hpe lang tim, BMS gaw shiga hte lama ma galaw ra ai. 500Ω/V jan ai insulation, n-gun rawng ai bungli galaw ai. 100Ω/V hte 500Ω/V lapran, dashboard hpe sadi jaw ai, bungli nkau mi hpe pat shingdang mai ai. Lawu na 100Ω/V, mara masa. Dai system gaw power hpe kalang ta dawm kau ai kun, shing nrai, mawdaw gau ai wa hpe nta de limmp galaw na ahkang jaw ai gaw mawdaw a lawan ai hte bungli galaw ai ladat hta madung nga ai. Nbung hta pallet hte forklift si wa nga ai mid{9}}lift hpe nang n ra sharawng ai.
High Voltage Interlock Loop Catchs Hpaji masa lam ni
Insulation hpe yu reng ai gaw loi loi hte hkrat sum mat ai. HVIL gaw akajawng sha matut mahkai lam hpe hparan ya ai. Gasat gala ai shaloi connector langai mi gaw n-gun yawm mat ai. Lockout ladat hpe n hkan sa ai sha, gram lajang ai laika hpe shaw kau ai. Shi a latch kaw na pru wa ai cable langai mi.
Dai hpe galaw ai gaw, system kata na high{0}}}}}}voltage matut mahkai ai lam shagu hta, low voltage pilot signal hpe galaw ai. Ndai pin ni gaw power contact ni hta na mechanically kadun ai. Connector langai hpe hpaw dat ai shaloi, interlock circuit hpe shawng hpaw dat ai, power gaw second garan nna matut mahkai ai. BMS gaw hpaw da ai circuit hpe mu ai, contactors yawng hpe hpaw da ai, voltage tsaw ai n-gun n-gun n-gun n-htum shi yang, n-gun kaba ai voltage hkrat mat ai. Connector myi man kaw ac n nga ai. Hpaji ninghkring wa hpe hkrit tsang hpa n nga ai.
Aten masat ai lam
Ndai gaw aten hpe myit yu ai aten du hkra asan sha na lu ai. Mahtai jaw ai hkuwawt hpe millisecond hku nna shadawn ai. System gaw break hpe chye na ra ai, hpa galaw na hpe dawdan ra ai, connector hpe hkum hkrang hku gang je kau lu ai hta grau lawan ai hku command contactor ni hpaw ra ai. 400V hta jan ai matut mahkai lam ni a matu, n-gun jaw ai lam hpe myit mada let, n-gun jaw ai lam hpe n-gun jaw ai lahkawng ngu na mechanical interlock langai mi nga ai, dai gaw, n-gun hpe shayawm kau ra ai, la nga u, dai hpang, hkang ai system aten hpe gang je kau ra ai.
Topology lahkawng nga ai. Series loop gaw interlock shara shagu hpe matut manoi circuit langai mi de matut da ai. Simple wiring, gara shara kaw mung hkring sa ai gaw loop ting hpe hpaw ya ai, raitim hkum hkrang n jep yu ai sha gara connector hkrat sum ai hpe n chye lu ai. CAN ntsa e parallel hpe yu reng ai lam gaw, connector langai hpra hpe tinang a masa hpe tinang hkrai tsun dan ai. Grau nna wiring, grau sawng ai, raitim manghkang gara kaw nga ai hpe nang atsawm sha chye ai. Mining hte nbungli pa hpe madi shadaw ai application ni gaw parallel ladat de sa wa ai, hpa majaw nga yang, dai jak ni gaw kaba ai majaw, mara galaw ai lam gaw aten hpe hkye la ai majaw re.
Anhte mu lu ai, n-gun n rawng ai ladat ni: hka lim ai lam kaw na pin n-gun n rawng ai, n-gun n rawng ai matut mahkai nta ni kaw na n-gun n rawng ai, n kaja ai routing kaw na cable fatigue byin ai majaw, bai kahtap nna n-gun jaw lu ai. Ndai ni gaw installation hte gram lajang ai lam ni rai nga ai, design hte seng ai lam ni n re, raitim shanhte gaw kadai a mara raitim HVIL mara ni hku nna dan dawng wa ai.
Hpa Matters for Fleet Operations
N hpaw hpang na matu ningdang ai pack langai gaw n mai byin ai. N mai byin ai aten kaw nna hpang ai pack gaw hkrit tsang hpa rai nga ai. Battery system hpe chyam dinglik ai lam gaw, lahkawng ngu na mahtai hpe shawng nnan ahkang jaw ai hku nna pat shingdang na matu nga ai.
Dai ana jep chyoi ai lam gaw BMS hpe manu jahpu jat ya ai. Interlock matut mahkai ai lam ni gaw, madang dep ai matut mahkai lam ni hta grau manu dan ai. Insulation hpe yu reng ai circuit hkum nan gaw, system insulation hpe loi mi hkra machyi shangun ai, parallel resilation lam hpe shabyin ya ai. Ndai ni gaw ndai makawp maga lam ni n lawm ai sha kaga-}}} gaw kadai mung n-gun n rawng ai lit la ai lam hpe shabyin ya ai majaw nga ai engineering tradeoffs ni rai nga ai.
Battery garan jaw ai ni hpe jep joi ai lam galaw ai customers ni a matu, san ra ai ga san ni gaw cell chemistry (sh) cycle prat hpe tsun ai lam n re. Dai ni gaw ahkyak ai, raitim shanhte gaw table stakes ni re. Supplier ni a atsam hpe hpaw shadan dan ai ga san ni gaw, edge case ni hte seng ai.-30℃hta hpa byin ai kun ? Cell hpung langai mi gaw, shinggyin tawn da ai aten hta n bung ai lam n nga mat yang hpa byin na kun? Marai langai ngai gaw, gram lajang ai shaloi, sense wire ni hpe n myit mada ai sha shayawm kau yang hpa byin na kun? Mahtai- hte seng ai, chyam dinglik ai data ni hte seng ai mahtai ni hpe lu ai supplier langai mi gaw, ndai manghkang ni hpe hkai sun hta mu lu na matu, law law pack ni hpe gawgap da ai rai na re.
Battery system chyam dinglik ai lam gaw ndau shabra na matu n re. Dai gaw, lama ma byin wa ai shaloi, mabyin masa n byin shi yang, hpa mung n shut ai sha, manghkang n byin ai sha, hkrak hkra galaw ai gaw, npawt nhpang gawgap lam ni rai nga ai. Kaja dik ai mahtai gaw, bungli galaw ai hpe nang galoi mung n sadi hkrup ai.
