HYBRID BATTERY SYSTEM


  1. CONSTRUCTION


    1. The No. 2 HV battery junction block assembly consists of the System Main Relays (SMRB) and battery current sensor.

    2. The No. 1 HV battery junction block assembly consists of the System Main Relays (SMRG and SMRP) and pre-charge resistor.

    3. The SMRs are relays that connect and disconnect the HV battery and power cable (frame wire) in accordance with the signal from the hybrid vehicle control ECU. 3 relays are provided; SMRB for the battery positive (+) side, SMRG for the battery negative (-) side, and SMRP for pre-charging.

      A003IY5C01
      *1 No. 2 HV Battery Junction Block Assembly *2 No. 1 HV Battery Junction Block Assembly
      *a SMRB *b SMRP
      *c SMRG *d Battery Current Sensor
      *e Precharge Resistor - -

    4. A battery current sensor, which is built into the HV battery junction block assembly, is used to detect the HV battery charging and discharging amperage.

    5. The hybrid vehicle control ECU optimally controls the hybrid system so that the SOC of the HV battery can always be within a specified range according to the amperage information that is received via the battery ECU assembly.

    6. The HV battery junction block assembly detects the temperature of SMRB and SMRG using the built-in temperature sensor and sends the data to the battery ECU assembly.