2014 INFINITI Q50 HYBRID cooling

2. Basic High Voltage Information
2-1 Battery Information
The Q50 HYBRID utilizes two batteries in order to supply both high and low voltage.
2-1.1 12V Battery• The Q50 HYBRID contains a conventional lead-acid12V battery.
• The 12V battery is located in the trunk, on the left side, concealed by a trim cover.
• The 12V battery is charged by the Li-ion battery through the DC/DC converter.
2-1.2 Li-ion Battery • The Q50 HYBRID contains a Li-ion high voltage battery.
• The high voltage battery is mounted in the trunk areabehind the rear seat, enclosed in a metal case and
concealed by trim cover.
• The high voltage battery stores energy at approximately 346 - 400 volts DC.
• A vent hose is provided to exhaust gasses outside the vehicle if necessary.
• An air vent (A) is located on the rear left hand lower C-pillar trim for battery cooling.
The high voltage battery supplies power to the following: • High voltage harnesses
• DC/DC converter
• Traction motor inverter
• Traction motor
• Electric air conditioner compressor
A
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4. Jump Starting
To start the hybrid system with a booster battery, the instructions and precautions below must be followed.
If done incorrectly, jump starting can lead to a 12V battery explosion, resulting in severe
personal injury or death. It could also damage your vehicle.
Jump starting provides power to the 12V system to allow the electrical systems to operate. The electrical
systems must be operating to allow the Li-ion battery to be charged. Jump starting does not charge the
Li-ion battery.
Discharged 12V battery may cause the following issues: • The instrument cluster cannot be displayed while the ignition switch is turned ON. (The hybridsystem cannot start.)
• Headlamps, horn, etc. are weak.
•To avoid electrical shock, the high voltage Li-ion battery CANNOT be jump started.
• Explosive hydrogen gas is always present in the vicinity of the 12V battery. Keep all sparks and flames away from the 12V battery. Make sure the vent tube is mounted.
• Do not allow battery fluid to come into contact with eyes, skin, clothing or painted surfaces. Battery fluid is a corrosive sulfuric acid solution that can cause severe burns.
If the fluid comes into contact with anything, immediately flush the contacted area
with water.
• The booster battery must be rated at 12 volts. Use of an improperly rated battery can damage the vehicle.
• Whenever working on or near a 12V battery, always wear suitable eye protectors (for example, goggles or industrial safety spectacles) and remove rings, metal bands, or
any other jewelry. Do not lean over the 12V battery when jump starting.
• Do not attempt to jump start a frozen battery. It could explode and cause serious injury.
• Q50 HYBRID is equipped with an automatic cooling fan. It could come on at any time. Keep hands and other objects away from it.
• Always follow the jump starting instructions below. Failure to do so could result in damage to the charging system and cause personal injury.
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Li-ion Battery Cooling System Exploded View
, ,: Indicates that the part is connected at points with same symbol in actual vehicle
1. Battery outlet duct C 2. Battery outlet duct B 3. Battery cooling fan
4. Battery outlet duct A 5. Battery inlet duct B 6. Battery inlet duct A
7. Battery front duct 8. DC/DC inlet duct 9. DC/DC outlet duct
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1
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6-2.2 Removal Procedure1. Discharge high voltage battery. Refer to
3-2.4 Discharge Procedures (DG–18)
2. Remove the service plug. Refer toAlternate Procedure 2 (Remove Service Plug) (DG–27).
3. Lift up seat cushion while pulling the seat cushion hook levers, and then disengage seat cushion hook.
4. Remove seat cushion from vehicle.
5. Remove seat belt from seat belt hook.
6. Remove seatback fixing nuts (A) .
7. Lift up seatback, disengage seatback frame (B) from engaging portion (C) , and then remove seatback.
8. Remove battery inlet duct A and battery front duct. Refer to the Li-ion Battery Cooling System Exploded View in
6-2.1 Exploded Views (DG–42).
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A
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B
C
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