HV Battery Assembly 1 HV Battery Assembly Power

HV Battery Assembly 1

HV Battery Assembly Power Supply – The HV battery supplies power to MG 1 / MG 2 – The auxiliary battery supplies power to HV ECU and Engine ECU (all ECU) – When both are functioning properly, the vehicle will start 2 HV Battery (DC 201. 6 V) Auxiliary Battery (DC 12 V)

HV Battery Assembly Components Module Current Sensor SMR 3 SMR 2 Resister 3 Battery ECU SMR 1 Service Plug Connector

HV Battery Assembly Battery Module – Nickel metal hydride (Ni-MH) battery (1. 2 V x 6 cells) x 28 modules = 168 cells = DC 201. 6 V 28 Module (1. 2 V x 6 cells) 4

HV Battery Assembly Battery ECU – Maintains control of HV battery SOC (State of charge) – Ensures battery capability Battery ECU Battery Cooling Fan Relay SOC Control HV Battery Condition Detection Electrical Leakage Detection for High-voltage System Battery Cooling Fan Controller Voltage x 14 + Battery Cooling Fan Motor 5 Service Plug - Current Sensor CAN Cooling Fan Control Diagnosis Function for HV Battery • HV ECU • Engine ECU • A/C ECU Temp. x 4 Temp. Sensors (Thermistor) HV Battery

HV Battery Assembly Battery ECU – Controls SOC to match THS characteristics – The SOC is maintained at approx, 60%. A margin is given for further recharging via regenerative braking – Sends requests to HV ECU to obtain desired SOC 6

HV Battery Assembly SOC Control – When the SOC is dropped, battery ECU sends the “Charge Request” signal to HV ECU Battery ECU SOC Charge Request HV ECU Power Request Engine ECU Control Voltage (SOC) Charging HV Battery 7 Charge MG 1 Drive Engine

HV Battery Assembly SMR (System Main Relay) – Turns ON / OFF the high-voltage circuit SMR 3 SMR 1 SMR 2 8

HV Battery Assembly SMR – When the power is ON (READY ON) STEP 1: SMR 1 / SMR 3 ON STEP 2: SMR 2 ON STEP 3: SMR 1 OFF 9

HV Battery Assembly SMR – When the power is ON (READY ON) STEP 1: SMR 1 / SMR 3 ON STEP 2: SMR 2 ON STEP 3: SMR 1 OFF 10

HV Battery Assembly SMR – When the power is ON (READY ON) STEP 1: SMR 1 / SMR 3 ON STEP 2: SMR 2 ON STEP 3: SMR 1 OFF 11

HV Battery Assembly SMR – When the power is ON (READY ON) STEP 1: SMR 1 / SMR 3 ON STEP 2: SMR 2 ON STEP 3: SMR 1 OFF 12

HV Battery Assembly SMR – When the power is OFF STEP 1: SMR 2 OFF STEP 2: SMR 3 OFF 13

HV Battery Assembly SMR – When the power is OFF STEP 1: SMR 2 OFF STEP 2: SMR 3 OFF 14

HV Battery Assembly SMR – When the power is OFF STEP 1: SMR 2 OFF STEP 2: SMR 3 OFF 15

HV Battery Assembly SMR – System diagram Inverter HV Battery Service Plug Interlock Switch (Service Plug) Power Switch 16 SMR 2 Resister Voltage Sensor Current Sensor SMR 1 Battery ECU SMR 3 HV ECU Power Source Control ECU Airbag Sensor Assembly Interlock Switch (Inverter Cover) Circuit Breaker Sensor

HV Battery Assembly SMR – Shutdown control READY OFF 17 At Collision Interlock Switch OFF (Service plug grip disconnection, Inverter cover open)

HV Battery Assembly Service Plug – Shut off the high voltage circuit manually Service Plug 18

HV Battery Assembly Service Plug – Power is shut off at HV battery midpoint to avoid high voltage electricity flowing into the circuit 19

HV Battery Assembly Service Plug – It contains a interlock switch and fuse Service Plug Grip Fuse Cover Interlock Switch 20

HV Battery Assembly Service Plug [Removal] [Installation] 21 Caution: Wear insulated gloves

HV Battery Assembly Cooling System – Battery ECU executes a command to switch cooling fan ON when battery temp. rises Cooling Fan Controller Battery Module 22 : Temp. Sensor Air Inlet

HV Battery Assembly Cooling System – Cooling fan motor is stepless controlled Cooling Fan Controller Temp. Sensors (HV Battery) Cooling Fan Motor Duty Signal Battery ECU A/C ECU 23 Cooling Fan Controller M Output Voltage (V) 13 4 30 95 (%) Input Duty Ratio (from Battery ECU)

HV Battery Assembly Auxiliary Battery – Auxiliary battery supplies power to headlights, audio, and all ECUs Auxiliary Battery 24

HV Battery Assembly Auxiliary Battery – Sealed-type battery is used Notice: Refrain from quick charging Because the battery fluid cannot be replenished Never use an ordinary battery 25

HV Battery Assembly Auxiliary Battery – Jump Start Terminal • ”+” terminal of auxiliary battery for jump start is used Jump Start Terminal 26