Emergency battery pack

Description

Number Project Technical Requirements Remarks
1.1 Material System Lithium Battery Cylinder
1.2 Nominal voltage 25.2V 7s
1.3 Nominal capacity ≥ 42Ah 1C at room temperature
1.4 2C capacity ≥ 95% rated capacity 2C room temperature1.5 3C capacity ≥ 90% rated capacity 3C room temperature1.6 4C capacity ≥ 90% rated capacity 4C room temperature1.7-20’C Capacity ≥ 85% Rated Capacity 1C
1.8-40’C capacity ≥ 75% rated capacity 1C1.9 55 ‘C capacity ≥ 95% rated capacity 1C
1.10 Maximum charging current 80A Heating at low temperature1.11 Maximum discharge current 160A at room temperature
1.12 Rated energy > 1024Wh
1.13 Charge holding capacity ≥ 90% rated capacity for 30 days1.14 Insulation resistance > 20M Q 500V DC
1.15 Working temperature -40 ‘C -55 °C
1.16 cycle life=1200 cycles,80% DOD
1.17 Switch function switch can control discharge without affecting charging and control
output
2 BMS parameters
Number Project Technical Requirements Ground Status Takeoff Status
2.1 Number of strings 7 stringsl
2.2 Charging Unit Protection 4.25V
2.3 Charging unit protection delay of 1 secondl
2.4 Charging Unit Protection Recovery 4.1V
2 5 Charging temperature protection: Level 1 alarm for high temperature of 50 °Cl2.6 Level 2 alarm at 60 ‘C cuts off chargingl
2.8 Charging Temperature Protection Low Temperature 0 ‘c Level 1 Alarm Heating Charging!2.9 Charging temperature protection delay of 3s\
2.10 Charging temperature protection recovery ≤ 50 °Cl
2.11 Charging Total Voltage Protection 4.25 v*7 Cut off Charging!2.12 Charging total voltage protection delay of 100msl
2.13 Charging Total Voltage Protection Recovery 4.1 V* 7\
2.14 Charging Overcurrent Protection 100A Cut off Charging\2
.15 Charging overcurrent protection delay of 1 second\
2.16 Charging overcurrent protection, recovery discharge/disconnection of chargerl
2.17Discharge cell protection 2.75V cut-off discharge only alarm
2.18 3V Level 2 Alarm Level 2 Alarm
2.19 3.5V Level 1 Alarm Level 1 Alarm
2.20 Discharge cell protection delay of 3s\
2.22 Discharge Cell Protection Recovery 3.5V2.23 Discharge temperature protection 55 ‘C Level 1 alarm
2.24 60 ‘C cut-off discharge alarm
2.25 Discharge temperature protection delay of 3 secondsl2.26 Discharge temperature protection recovery ≤ 50 °Cl
2.27 Discharge Total Voltage Protection 2.75 V*7 Cut off Discharge Alarm
2.28 Discharge total voltage protection delay of 100ms
2.29 Discharge Total Voltage Protection Recovery 4.1 V* 7\2.30 discharge overcurrent protection 200A cut-off discharge alarm2.31 Discharge overcurrent protection delay of 1 second)2.32 Discharge overcurrent protection, restoration of charging/disconnection of load\2.33 Short circuit protection with cut-off discharge alarm
2.34 Short circuit protection current 500Al
2.35 Short circuit protection delay 500msi
2 36 Short circuit protection restoration disconnects/charges/disconnects load2.37 Equilibrium Passive Equilibriumi
2.38 Balanced turn-on voltage 4.1V chargingl
2.39 Balanced current 60mAl
2.40 SOC error≤ 5%\
2.41 S0C 20% Level 1 Alarm Level 1 Alarm
2.42 $0C 10% Level 2 Alarm Level 2 Alarm2.43 S0C 0% cut-off discharge level 3 alarm2.44 communication CAN baud rate 500KB\
2.45 Status Recognition Ground/Takeoff CAN Information!
3 Physical Performance RequirementsNumber Project Parameter Remarks
3.1 Size ≤ 240*170*100mm, excluding joint protrusion size
3.2 Weight ≤ 6 5kg including shell
3.3 surace treatment anodlzin03.4 Color Black
3.5Output connector 1Y50DX2204ZJ10
Discharge ports 1 and 2:positive electrode3.4: Negative pole
3.6Output connector 2:Lingke LP-28-J02SX-23-401 with dust capCharging port 1: Positive pole
2. Negative pole
3.7 The switch/communication connector manufacturer shall provide a self-locking device for
their own connectors
4 Environmental parameters
Number Project Parameter Remarks
4.1 Temperature range -40’C -55 ‘C Low temperature heating
4.2 Altitude > 6500m
4.3 Protection level lP65