Lithium battery himna test hi eng nge ni?

Lithium battery himna test hi eng nge ni?

Battery himna atana a hman dan Testing .

over-Discharge test .

1)Test Tum: Single cell battery-a electrical abuse performance finfiah tur chuan battery a over lai a nih chuan a himna tur hlauhawm awm thei te chu simulate la-discharged a ni a, chu chuan sample chu design mamawh a tlin leh tlin loh endik a ni.

2)Test hmanrua: Cell pakhat chauh nei .Battery charge-Discharge hmanrua ., Temperature test chamber awm reng, multimeter, etc. te.

3)Test dan leh tih dan tur:

1 Pre-Single cell battery chu room temperature-ah enkawl la, chutah chuan fully charge rawh.

2 Constant current-a 1/3i(energy type) emaw (power type) emaw-ah discharge cut-off voltage-ah discharge la, chutah chuan I current-ah 90 min chhung force-in discharge rawh.

4)Data processing leh evaluation criteria: Sample hian test chhung leh test zawh hnua darkar 1 chhunga observation period chhunga kangmei emaw puak emaw a lantir em tih enfiah tur a ni.

Overcharge test a ni a .

1)Test Tum: Single cell battery-a electrical abuse performance finfiah tur chuan battery overcharge a nih chuan himna atana hlauhawm thei tur awm thei te chu simulate la, chu chuan sample chu design mamawh a tlin leh tlin loh endik a ni ang.

2)Test hmanrua: Cell pakhat battery charge-Discharge hmanrua, temperature test chamber awm reng, multimeter, etc.

3)Test dan leh tih dan tur:

1 Pre-Single cell battery chu room temperature-ah enkawl la, chutah chuan fully charge rawh.

2 Constant current charging chhunzawm zel tur chuan single cell battery voltage chu a working voltage sang ber aiin a let 1.1 in a sang a, a nih loh leh single cell battery charged capacity chu 115% SOC a nih thlengin chhunzawm zel tur a ni.

4)Data processing leh evaluation criteria: Sample hian test chhung leh test zawh hnua darkar 1 chhunga observation period chhunga kangmei emaw puak emaw a lantir em tih enfiah tur a ni.

Short circuit test a ni a, a khelh dan tur a hriat theih.

1)Test Tum: Single cell battery-a electrical abuse performance finfiah nan, pawn lam short circuit battery-a a thlen huna himna hlauhawm awm thei turte chu simulate la, chutiang chuan sample chuan design mamawh a tlin leh tlin loh endik rawh.

2)Test hmanrua: Cell pakhat battery charge-Discharge hmanrua, temperature test chamber awm reng, multimeter, etc.

3)Test dan leh tih dan tur:

1 Pre-Single cell battery chu room temperature-ah enkawl la, chutah chuan fully charge rawh.

2 Short-Single cell battery positive leh negative terminal te chu pawn lam atanga 10 min chhung circuit la, pawn lam circuit resistance chu 5 mΩ aia tlem a ni ang.

4)Data processing leh evaluation criteria: Sample hian test chhung leh test zawh hnua darkar 1 chhunga observation period chhunga kangmei emaw puak emaw a lantir em tih enfiah tur a ni.

Crush test a ni a .

1)Test Tum: Single cell battery-a mechanical abuse performance finfiah nan battery tihchhiat a nih chuan himna atana hlauhawm awm thei te chu simulate la, chu chuan sample chu design mamawh a tlin leh tlin loh endik a ni ang.

2)Test hmanrua: Single cell battery charge-Discharge hmanrua, temperature test chamber awm reng, power battery crush test bench, multimeter, etc.

3)Test dan leh tih dan tur:

1 Pre-Single cell battery chu room temperature-ah enkawl la, chutah chuan fully charge rawh.

2 Crushing Direction: Single cell battery plate direction-ah emaw, lirthei layout-a tihchhiat theihna tur hmunah emaw pressure perpendicular-in hnawih tur a ni.

ani. Crush plate form: Semi-Cylinder radius 75 mm nei, leh semi-Cylinder sei zawng (L) chu crushed single cell battery size aiin a lian zawk.

b. Crushing speed: 2 mm/s aia tam lo.

c. Crushing degree: Voltage 0 V a thlen emaw, deformation 15% a thlen emaw, crushing force chu test object rit zawng aiin a let 1000 emaw a thlen chuan crushing kha titawp rawh.

3 Min 10 chhung vawn tur a ni.

4)Data processing leh evaluation criteria: Sample hian test chhung leh test zawh hnua darkar 1 chhunga observation period chhunga kangmei emaw puak emaw a lantir em tih enfiah tur a ni.

Thermal Runaway Test 2019 a ni.

1)Test Tum: Battery management system-in a enfiah theih tur battery unit tenau ber thermal runaway performance finfiah turin, electric vehicle-a chuangte leh lirthei system-te tana hlauhawmna thlentu core hazard source-ah safety evaluation neih a, chu chuan sample-in design mamawh a tlin leh tlin loh endik a ni.

2)Test hmanrua: Single cell battery charge-Discharge|discharge hmanrua, temperature test chamber awm reng, heating device, temperature acquisition system, multimeter, etc.

3)Test dan leh tih dan tur:

1 Flat emaw rod emaw hmang rawh-Shaped heating device, a chunglam chu ceramic, metal emaw insulating layer emaw hmanga khuh tur a ni. Heating device atana power thlan dan tur chu Table 6-10-ah hian tarlan a ni. Test object leh heating device assembly chu tifel rawh. Heating device chu single cell battery nen direct-a inzawm tur a ni a, heating device lian tham tak chu test object-a heated surface aiin a lian lo tur a ni. Temperature monitor te, temperature sensor te chu monitoring point-a dahin, heating device sir lehlamah heat conduction atanga hla zawkah dah rawh. Temperature data-a sampling interval chu 1 s aia tlem a ni tur a ni a, accuracy requirement chu 2℃a ni tur a ni a, temperature sensor tip awmna tur chu 1 mm aia tlem a ni tur a ni.

Table 6-10 Heating Device thlan dan tur Heating .

2 Pre-Single cell battery chu room temperature-ah enkawl la, chutah chuan 100% SOC-ah charge rawh. Tichuan test object chu 1/1 current hmangin 12 min chhung charge chhunzawm leh rawh. Heating device chu start nghal la, test object chu a maximum power-ah dah chhunzawm zel rawh. Thermal runaway a awm emaw, monitoring point-a temperature 300℃a thlen chuan heating device chu off la, off rawh.

3 thermal runaway a awm leh awm loh hriat theihna tur conditions .

ani. Test object hian voltage drop a tawk a, drop hian initial voltage 25% a pel bawk.

b. Monitoring point-a temperature chu battery siamtuin a tarlan operating temperature sang ber a thleng a ni.

c. Monitoring point DT/DT-a temperature rise rate chu℃/s 1 aia tam emaw, a tlukpui emaw a ni a, s 3 aia tam a awm bawk. Thermal runaway hi A leh C emaw B leh C a lo awm chuan a lo awm tawh tih hriat a ni.

4) Data processing leh evaluation criteria: Sample hian heating process chhung leh heating zawh hnu 1 h chhunga kangmei emaw puak emaw a lantir em tih enfiah tur a ni.

System-Level Power Battery himna atana a hman dan test .

Simulated crash .

1)Test Tum: Lirthei inhnawh tawn laiin battery pack/system-a nghawng a neih dan simulate turin, chu chuan sample-a structural strength-in design mamawh a tlin leh tlin loh ennawn.

2)Test hmanrua: Battery system charge-Discharge hmanrua, temperature test chamber awm reng, simulated crash test bench, insulation resistance tester, etc.

3)Test Method leh Procedures: Vehicle chhunga test object installation position leh GB/T 2423.43{5}}2008-a thil mamawh te sawiin, test object chu sled-ah fixture neiin horizontal-in a dah tur a ni. Test object hmanna boruak leh lirthei acceleration/deceleration pulse nena inzawm chuan he pulse hian Table 6{{6}11 leh Figure 6-1-a tarlan boundary conditions te chu a tlin tur a ni (lirthei kalna tur chu x-axis a ni a, horizontal direction perpendicular to the traveling direction chu Y-axis a ni a, M-axis a ni). Test object hian installation direction tam tak (x/y/z) a neih chuan test atan acceleration lian zawk nei installation direction thlan tur a ni. Test zawhah test ambient temperature-ah darkar 2 chhung enfiah tur a ni.

Table 6-11 Simulated Crash Test atana Pulse Parameters 1.1.

4)Data siam dan leh endik dan tur:

1 Test leh observation hun chhunga battery pack/system-in leakage, rupture, fire, emaw explosion emaw a lantir em tih ziak la;

2 Test hma leh test zawhah insulation resistance value te record rawh.

Tikehsawm

1)Test Tum: Battery pack/system tihchhiat a nih chuan himna atana hlauhawm awm thei te simulate turin, chu chuan sample structural strength chu design mamawh a tlin leh tlin loh ennawn a ni.

2)Test hmanrua: Battery system charge-Discharge hmanrua, temperature test chamber awm reng, battery system crush test bench, insulation resistance tester, etc.

3)Test method leh procedures: Crushing directions chu x-direction leh y-direction (vehicle kal dan tur chu x-axis a ni a, horizontal direction dang chu traveling direction-a perpendicular a ni. Crushing speed chu 2 mm/s aia tam a ni tur a ni lo. Crushing kha titawp la, crushing force chu 100 kN a thlen emaw, deformation chu crushing direction-a a dimension zawng zawng 30% a thlen chuan min 10 chhung vawn tlat rawh. Test zawhah test ambient temperature-ah 1 h chhung enfiah tur a ni. Crush plate form schematic diagram chu Figure 6-2-ah hian kan hmu a. A hnuaia chi hnih zinga pakhat hi thlan theih a ni:

1 A semi-Cylinder radius 75 mm nei, leh semi-cylinder sei zawng (L) chu test object san zawng aiin a lian zawk a, mahse 1 m aia tam a ni lo, Figure 6-2a-ah hian a lang.

‐A pumpui dimensions 600 mm × 600 mm emaw a aia tlem emaw, semi{2}}cylinder pathum ve ve radius 75 mm nei leh 30 mm inkar a inhlat, Figure 6-2b-a kan hmuh ang hian.

Immersion himna tur .

1)Test Tum: Battery pack/system-a himna atana hlauhawm awm thei te chu water ingress conditions hnuaiah test a, design mamawh a tlin leh tlin loh endik tur a ni.

2)Test hmanrua: Battery System Charge-Discharge hmanrua, temperature test chamber awm reng, tuifinriat tui immersion test chamber, insulation resistance tester, etc.

3)Test Method leh Procedures: Test object chu lirthei connection method angin wiring harness, connector leh component dangte nen a inzawm tur a ni. Test dan tur pahnih zinga pakhat thlang rawh:

1 Test object chu 3.5% (mass fraction) sodium chloride solution-ah 2 h chhung dah la, lirthei assembly orientation tak takah dah la, test object-a tui thuk taka thun thei tur tui thuk tawk

2 GB/T 4208-2017-a 14.2.7-a tarlan dan leh kalphung angin test hi kalpui rawh. Test object chu a siamtuin a tarlan installation state-ah tuiah a thun kim vek tur a ni. Test object 850 mm aia sang nei tan chuan a hniam ber chu tui chung atanga 1000 mm a hniam tur a ni a; Test object san zawng 850 mm aia tam nei tan chuan a sang ber chu tui chung atanga 150 mm aia hniam a ni tur a ni. Test hun chhung hi 30 min a ni. Tui leh test object inkar temperature danglamna chu 5℃aia tam a ni tur a ni lo . Battery pack chu tui atanga lakchhuah hnuah, a nghet reng tur a ni a, test ambient temperature-ah 2 h chhung enfiah tur a ni.

4)Data processing leh evaluation criteria: Method 1-a tarlan test-te tan chuan, test neih chhung leh a hnu lama enfiah hun chhung hian battery pack/system-in kangmei, puak emaw, thil dang emaw a lantir em tih ziak tur a ni. Method 2-a tarlan test-na atan chuan, test zawhah battery pack/system-a insulation resistance value chu record la, IPX7 mamawh a tlin leh tlin loh te, leakage a awm leh awm loh te, shell rupture, fire emaw explosion emaw a awm leh awm loh te record rawh.

Pawn lam kangmei chhuahna .

1)Test Tum: Pawn lam kangmei chhuah a nih chuan battery pack/system-a himna hlauhawm awm thei te test a, design mamawh a tlin leh tlin loh endik.

2)Test hmanrua: Battery system charge-Discharge hmanrua, temperature test chamber awm reng, pawn lam kangmei chhuahna test bench, insulation resistance tester, anemometer, etc.

3)Test method leh procedures: Ambient temperature chu 0℃aia sang a ni tur a ni a, thli tleh chak zawng chu 2.5 km/h aia tam a ni tur a ni lo. Test chhung hian gasoline tray lian tham tak chu test object-a horizontal projection dimension chu 20 cm-in a tam tur a ni a, mahse cm 50 aia tam a ni lo vang a, tray san zawng chu gasoline chunglam atanga 8 cm aia sang a ni tur a ni lo. Test object chu central-ah dah tur a ni. Gasoline liquid level leh test object hnuai lam inkar hlat zawng chu 50 cm-ah dah tur a ni a, lirthei unload a nih chuan test object hnuai lam ground clearance emaw a ni tur a ni. Tui chu tray hnuai lam layer-ah inject tur a ni. Pawn lam kangmei chhuahna schematic diagram chu Figure 6-3-ah hian kan hmu a.

External fire exposure test hi a hnuaia stage 4 ah hian then a ni a:

1 Preheating: Test object atanga m 3 tal a hlaah gasoline chu hal rawh. Preheating 60 s hnuah test object hnuaiah gasoline tray dah la. Gasoline tray a lian lutuk a, a kal theih loh chuan test object leh a support te chu a kal zawk thei a ni.

2 Direct Flame exposure: Test object chu direct-in meialh nen 70 s chhung a awm a.

3 Indirect flame exposure: Gasoline tray chu mei hmangin khuh rawh-resistant shield. Test object hi he state-ah hian 60 s chhung test a ni. A nih loh leh, an pahnih inremna a nih chuan, meialh chu 60 s dang atan direct-a inhriat chhunzawm zel tur a ni. Fire-resistant shield chu standard refractory brick atanga siam a ni a, a dimension leh technical data te chu Figure 6-4 ah hian tarlan a ni.

4 Kangmei chhuahna atanga lak chhuah: Gasoline tray emaw test object emaw chu sawn la, test ambient temperature-ah emaw, test object pawn lam atanga temperature 45℃aia hniam a tlak thlengin 2 h chhung enfiah rawh.

4) Data siam dan leh endik dan tur:

.

2 Meialh a awm chuan kangmei chhuahna hmun lakchhuah a nih hnu min 2 chhungin a tihmit leh tihmit a nih leh nih loh record rawh.

Thermal Runaway a darh dan .

1)Test Tum: Battery cell pakhat chauhin thermal runaway a paltlang hunah battery pack/system-a himna hlauhawmna test a, design mamawh a tlin leh tlin loh endik.

2)Test hmanrua: Battery system charge-Discharge hmanrua, temperature test chamber awm reng, battery system penetration test bench, heating device, temperature acquisition system, insulation resistance tester, anemometer, etc.

3)Test conditions: Test hi 0℃aia sang ambient temperature , relative humidity 10 %–90 %, leh atmospheric pressure 86–106 kPa awmna hmunah te neih tur a ni. Test a tan hmain test object a SoC kha adjust hmasa phawt ang che. Pawn lam charging atana siam battery pack/system te tan chuan SOC chu enterprise-in a tarlan SOC operating range pangngai 95 % aia tlem loah siamrem tur a ni. Battery pack/systems te tan chuan lirtheia energy device chauh hmanga charge theih tura siam a nih chuan, SOC chu enterprise-in a tarlan SOC operating range pangngai 90 % aia tlem loah siamrem a ni ang. Test tan hmain test device zawng zawng chu a pangngaiin a thawk vek tur a ni. Test sample chu a tlem thei ang bera siam danglam a ni ang a, enterprise chuan siamthatna eng emaw zat list a thehlut ang. Test hi in chhungah emaw, thli tleh chakna 2.5 km/h aia tam lo awmna hmunah emaw neih tur a ni.

4)Test method leh procedures: Thermal runaway trigger object hi test object chhunga battery cell pakhat a ni. Battery pack/system lai takah awm emaw, cell pakhat dangin an hual vel emaw cell pakhat thlang rawh.

1 Nail penetration method thermal runaway trigger dan: penetration needle chu steel atanga siam tur a ni a, a diameter chu 3–8 mm a ni tur a ni; Needle tip chu conical a ni tur a ni a, angle 20℃–60℃a ni tur a ni ; Penetration speed chu 0.1–10 mm/s a ni tur a ni; Penetration position leh direction chu single battery cell-a thermal runaway trigger turin thlan tur a ni (entirnan, electrode plate direction-a perpendicular).

2 Heating method to trigger thermal runaway: flat emaw rod emaw hmang la-Shaped heating device chu a chunglam ceramic, metal emaw insulating layer emaw hmanga khuh a ni. Block-Single cell battery ang bawka dimension nei, shaped heating device tan chuan he heating device hian single cell pakhat a thlak thei a, trigger object chunglam nen direct-a inhnaih a ni thei bawk Thin-film heating device tan chuan trigger object chunglamah engtik lai pawhin a inzawm reng tur a ni; Heating device-a heated area chu single cell battery surface area aia lian a ni tur a ni lo; Heating device-a heating surface chu single cell battery chunglam nen direct-a inzawm tur a ni a, heating device awmna hmun chu temperature sensor tarlan awmna hmun nen a inmil tur a ni Installation zawh hnuah heating device chu 24 h chhungin a thawk tur a ni a, trigger object chu a maximum power-ah a lum tur a ni; Heating device-a power thlan dan chu Table 6-12-ah hian tarlan a ni a; Thermal runaway a thlen emaw a inmil temperature sensor chu 300℃a thlen emaw chuan triggering kha titawp rawh .

Table 6-12 Heating Device Power thlan dan tur .

3 Monitoring Point Arrangement scheme rawt: Voltage emaw temperature emaw chu original circuit emaw test circuit dang emaw hmangin enfiah tur a ni. Temperature data-a sampling interval chu 1 s aia tlem a ni tur a ni a, accuracy requirement chu ±2℃a ni tur a ni. Nail penetration triggering lai hian temperature sensor chu short-circuit point hnaih thei ang bera dah tur a ni a; Nail temperature pawh hman theih a ni (nail penetration triggering laiin temperature sensor arrangement positions schematic diagram chu Figure 6-5-ah hian tarlan a ni). Heating triggering lai hian temperature sensor chu heating device atanga hla takah, chu chu heating device sir lehlamah a sir lamah dah tur a ni (Figure 6-6 en la).

5)Thermal runaway awmna tur hriat theihna tur criteria recommended:

1 Test object hian voltage tlahniam a tawk a, a tir lama voltage 25 % aia tam a nei.

2 Monitoring point-a temperature chu battery siamtuin a tarlan operating temperature sang ber a thleng.

. Thermal runaway chu 2 leh 3 emaw 3 emaw leh 3 emaw a awm chuan a thleng tih hriat a ni.

Data processing leh evaluation criteria 1.1.

1)Rescommended method chu thermal runaway triggering method atan hman a nih a, thermal runaway a awm loh chuan, thermal propagation hian lirtheia chuangte a tichhe lo ang tih chian a nih chuan, a hnuaia recommended method pahnih hmang hian thermal runaway a thleng dawn lo tih finfiah a ngai a ni.

2)Thermal runaway a awm chuan thermal runaway alarm signal pek chhuah a nih atanga test object pawn lama kang emaw puak emaw a thlen thlengin record rawh (a hmasa ber tur a ni) He hun hi 5 min aia tlem lo a ni ang.