2017 INFINITI Q70 HYBRID cooling

2. Basic High Voltage Information
2-1 Battery Information
The Q70 HYBRID utilizes two batteries in order to supply both high and low voltage.
2-1.1 12-volt Battery• The Q70 HYBRID contains a conventional lead-acid12-volt battery.
• The 12-volt battery is located in the trunk, left of high voltage battery, concealed by trim cover.
• The 12-volt battery is charged by the high voltage battery through the DC/DC converter.
2-1.2 High Voltage Battery • The Q70 HYBRID contains a 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 approximately 346 volts DC (400V max.) .
• A vent hose is provided to exhaust gasses outside the vehicle if necessary.
• An air vent is located on the rear parcel shelf 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
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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 12-volt battery explosion, resulting in severe
personal injury or death. It could also damage your vehicle.
Jump starting provides power to the 12-volt system to allow the electrical systems to operate. The electrical
systems must be operating to allow the high voltage battery to be charged. Jump starting does not charge
the high voltage battery.
Discharged 12-volt 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 battery CANNOT be jump started.
• Explosive hydrogen gas is always present in the vicinity of the 12-volt battery. Keep all sparks and flames away from the 12-volt 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 withwater.
• 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 12-volt 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 12-volt battery when jump starting.
• Do not attempt to jump start a frozen battery. It could explode and cause serious injury.
• Q70 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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6-2 High Voltage Battery Pack Removal
6-2.1 Exploded View1. Battery inlet duct A 2. High Voltage battery assembly 3. DC/DC converter outlet duct
4. Battery outlet duct B 5. Battery outlet duct A 6. Battery inlet duct B
7. Battery cooling fan 8. DC/DC converter inlet duct
6-2.2 Removal Procedure 1. Discharge high voltage battery. Refer to
3-3 Discharge Procedures (DG–18).
2. Remove the service plug. Refer to
Alternate Procedure 2 (Remove Service Plug) (DG–26).
3. Insert an appropriate tool into the gap between the trunk lamp case and front trunk trim panel to remove the trunk lamp case.
4. Disconnect the trunk lamp harness connector.
5. Remove the trunk lid weather strip.
6. Remove the front trunk trim retainer clips.
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21. Disconnect the atmospheric pressure sensor harnessconnector (A) .
22. Disconnect the high voltage battery cooling fan motor harness connector.
23. Release the two rear seat cushion retainers.
24. Lift up and pull out the rear seat cushion (1) and then remove the rear seat back nuts (3) . Lift up the rear seat
back (2) and remove it.
A
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34. Remove the battery cooling fan mounting bolts (A) andremove the battery cooling fan (1) .
DANGER
Touching high-voltage components without wearing
appropriate Personal Protective Equipment (PPE) will
cause electrocution.
35. Confirm that the insulated tape is still securely in place on the high voltage battery pack as shown in the figure.
: Insulated tape
36. Dismantling the remainder of the Q70 HYBRID may be performed like conventional Infiniti vehicles once the high voltage system is properly shut down and discharged.
6-3 High Voltage Battery Recycling
The high voltage battery is recyclable. For information regarding recycling of the high voltage battery, it is
recommended you contact the nearest INFINITI retailer or Infiniti Consumer Affairs at: United States:
1-800-662-6200 or in Canada: 1-800-361-4792.
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