BIN@Sheffield 2014 Nissan group: system optimisation for improved vehicle range

1. The New Nissan LEAF
System Optimisation for
Improved Vehicle Range
Iain Urquhart
Research Engineer
Nissan Technical Centre Europe
Nissan Motor Co., Ltd.
NISSAN GROUP STRICTLY CONFIDENTIAL

2. www.nissan-global.com
Overview
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The World’s Best
Selling EV
140,000 units sold
worldwide & growing
46 % Global
Market Share
 The MY10 LEAF
 Introducing the MY 14 LEAF
 ePowertrain Evolution
 New Charger Location
 B-mode
 New Heater technology
 Overall improvement of MY14 Vs MY10
Leading, Environmentally friendly, Affordable, Family car (LEAF)

3. THE MY10 NISSAN LEAF – Key EV Components
A real car with no compromise to performance
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4 : Power Inverter
and transformer
5 : Electric Motor
and Reducer
2 : Battery Charger
1 : Connector Box
3 : Lithium-Ion
Battery

4. MY14 LEAF: RANGE IMPROVEMENT POINTS
REDUCED DRIVELINE
FRICTION
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IMPROVED
AERODYNAMICS
IMPROVED
BRAKE
REGENERATION
MORE EFFICIENT
MOTOR
VEHICLE WEIGHT
REDUCTION 32 KG

5. ELECTRIC POWERTRAIN EVOLUTION
ORIGINAL NISSAN LEAF NEW NISSAN LEAF
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Inverter
PDM
（Charger,
DC/DC, JB）
Motor
Reducer
Inverter
Motor
Reducer

6. NEW CHARGER LOCATION
• Key benefits of moving the charger to the front of the car:
• Reduced harness size (cost and complexity reduction)
• Increase of usable boot space for customer
+40 LITRES
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Original Nissan Leaf with
the Charger in the Boot
New Nissan Leaf with Charger
under the Bonnet

7. B-MODE : MORE FUN, MORE EFFICIENT
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New Additional Drive Mode
 Increased Brake Regeneration
 More Stability and Control

8. HEATER REDESIGNED FOR BETTER EFFICENCY
Today’s LEAF
Hot
0.6kw
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Original LEAF
温水熱交換
Refrigerant
冷媒
温風
Input
1.3kw
Heat
Exchanger
冷水
Output
1.0kw
冷風
Current Leaf
Electrical heater system
Input
0.4kｗ
Refrigerant
冷媒
Cool
温風
Heat pump system
Output
1.0kw
Air heat
空気熱
熱交換熱交換
冷風
Refrigerant
Heat Pump reduces energy consumption by 70%

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Winter Urban Stop and Go, Traffic Jam
AUTONOMY
62 miles
Original LEAF
77 miles
New LEAF
REAL-WORLD DRIVING RANGE
15 mph

10. LEAF NOW GOES EVEN FURTHER
OFFICIAL RANGE IMPROVEMENT (NEDC)
124 miles
(199 km)
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200
180
160
140
120
100
AUTONOMY (km)
109 miles
(175 km)
ORIGINAL NISSAN LEAF NEW NISSAN LEAF

11. CHARGING IN HALF THE TIME
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Domestic Plug
(10 amp)
Home Wallbox or
Street Charger
(16 amp)
Home Wallbox or
Street Charger
(32 amp)
CHAdeMO
Quick Charger
12 hours
0-100% charge
8 hours
0-100% charge
8 hours
0-100% charge
30 minutes
0-80% charge
12 hours
0-100% charge
8 hours
0-100% charge
4 hours
0-100% charge
30 minutes
0-80% charge
Optional 6.6 KW Onboard Charge now makes
charging from a 32 A Charger possible

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Questions?
BUILT IN SUNDERLAND, UK SINCE MARCH 2013.

13. APPENDIX
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14. CHASSIS TUNING BY NTCE IN EUROPE
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15. • Analysis of early adopters has allowed key concerns areas to be
highlighted and further system optimisation applied
• Tackling key current consumption devices such as the heater
and flux weakening current at high speed has allowed for
significant range improvement
• Evolution of brake regeneration control allows customer to set
level of engine braking according to taste
• Lessons continue to be learned and the knowledge gained will
www.nissan-global.com
Summary
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be directly applied to future EVs

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SPECIFICATIONS
Max speed 90mph
Battery Type laminated lithium-ion battery
Battery capacity/power 24kWh/over 90 kW
Max Engine Power 80kW
Max Engine Torque 254 Nm
Brakes Regenerative braking

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GRADES
VISIA
Auto A/C
Intelligent Key (I-Key)
Hill Start Assist NEW
16” Steel Wheels
Black interior Trim NEW
3.6kw Charger
Front Fog Light
MAIN OPTIONS:
Nissan Connect 2
+ Colour Reversing Camera
NEW
6.6kw Charger NEW
CHAdeMO Quick Charge
ACENTA
CHAdeMO Quick Charge
CarWings
Colour Reversing Camera
16” Alloys
Black or Grey trim
Privacy Glass
Auto Lights/Wipers
Electric Folding Mirrors
Cruise Control
Heat Pump NEW
B-Mode NEW
6 Speakers
MAIN OPTIONS:
6.6kw Charger NEW
Solar Panel spoiler
TEKNA
360º Around View
Monitor NEW
17” Alloys NEW
Black Leather NEW
Bose Sound System NEW
LED Headlamp
Heated Seats & Steering
Wheel
MAIN OPTIONS:
6.6kw Charger NEW
Solar Panel Spoiler

18. THE WORLD IS CHANGING
Nissan is working with
Governments & Businesses
across the world to develop
Quick Charge corridors.
• Here in the UK Nissan working
with OLEV to support the
government funded
Plugged In Places Scheme
• Providing 86 DC changers at
Motorway service stations
across the UK
• To kick start the first national
EV rapid charge network > 88%
of the UK population are
less than 50 miles away
from a rapid charger
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EV CHARGING TOTALS IN UK

19. STORAGE BATTERIES ON WHEELS
Nissan LEAF supplies electricity to home
Power supply
while black out
×
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Renewable energy
[kW]
Demand
in house
Solar
generation
6 12 18 24
Peak saving
Electricity demand peak
Off-peak
6 12 18 24
[kW]

20. LEAF TO HOME
PCS* enables bi-directional electricity management
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Lighting
300W
A/C Audio
1500W
*PCS: Power Control System
Lighting
300W
Microwave
1300W
TV 150W
Refreg.
300W

21. eLCV’s & TAXIS ARE ON THEIR WAY ….
Nissan’s e-NV200 is scheduled to launch in 2014
Positive feedback has been received from fleet customers;
it is quiet and comfortable with generous carrying capacity
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