Nissan LEAF Battery Pack - Initial Analysis

100 %
0 %
Information about Nissan LEAF Battery Pack - Initial Analysis
Automotive

Published on February 26, 2014

Author: georgebetak

Source: slideshare.net

LEAF’s Battery Pack

Key Figures: • • • • • • 48 modules (in series) 660 lbs total weight 360 V nominal voltage 24 kWh rated capacity (66 Ah) 21 kWh available capacity 192 laminated prismatic cells

AESC Module - Key Figures: • • • • • 8.3 lbs per module 4 cells per module (2 in series, 2 in parallel) 7.5 V nominal voltage 0.5 kWh rated capacity (66 Ah) $662 retail price

AESC Cell - Key Facts: • • • • • • • • 1.8 lbs per cell 3.8 V nominal voltage 125 Wh rated capacity (33 Ah) 2 x better cooling than traditional cylindrical cells LiMn2O4 with LiNiO2 cathode (Nippon Denko) Graphite anode (Hitachi Chemicals) LiPF6 EC type electrolyte (Tomiyama) Celgard PP dry separator

Battery Model # 1: • • • • • • 3 modules per battery gauge bar (1.5 kWh) 16 bars total 12 bars visible 2 bars reserve 2 bars silent (1x top, 1x bottom) kWh remaining: (visible bars + 2) x 1.5 kWh

Battery Model # 2: • • • • 75 Wh per SOC tick 320 total SOC ticks 281 available SOC ticks kWh remaining: SOC ticks x 75 Wh / 1000

Range Estimate: • • • Range: kWh remaining x miles/kWh (Energy Economy) Environmental factors (temps, tire pressure, driver, wind) Reset energy economy gauge before the trip or trip segment

Accuracy & Predictability: • • • • Flat discharge characteristic Linear SOC tick characteristic 95% model accuracy

Fun Stats: • • • 4.10V cell voltage when full 4.04V cell voltage at 80% 17% (4 kWh) reserve capacity • • • 3.92V est. cell voltage at 50% 0.40V est. voltage drop from 12 to 1 bars 30mV est. voltage drop per visible bar • • 85% charging efficiency at 240V (3 kWh / 60 mins) 75% charging efficiency at 120V (1 kWh / 60 mins)

Sources: • • • • AESC (Nissan and NEC) MNL forum Volt forum Data samples from LEAF owners

Links: 1. http://www.eco-aesc-lb.com/en/product.html 2. http://gm-volt.com/forum/showthread.php?5243-Volt-thermalmanagement-system-temperature-band&p=43562#post43562 3. http://www.mynissanleaf.com/viewtopic.php?f=31&t=4295 4. http://www.mynissanleaf.com/viewtopic.php?f=44&t=4760 5. http://green.autoblog.com/2011/08/03/need-to-replace-anissan-leaf-battery-hows-19-392-31-753-u/ 6. http://www.youtube.com/watch?v=FiyRxxbkHH0 7. http://www.mynissanleaf.com/viewtopic.php?f=9&t=2265 8. http://www.no-url.com/LEAF/LevelIIICharging_01-30-11.html

Add a comment

Related presentations

Related pages

3rd-Party Nissan LEAF Battery Pack Upgrades -- Doubling To ...

3rd-Party Nissan LEAF Battery Pack Upgrades ... My “analysis” is surely ... http://cleantechnica.com/2013/10/24/nissan-tests-48-kwh-battery-leaf/
Read more

Nissan Leaf New Battery Cost: $5,500 For Replacement With ...

Fitting the replacement pack to 2011 and 2012 Nissan Leaf models requires a special $225 installation kit, which makes the new battery "backward compatible ...
Read more

Nissan Leaf - Wikipedia, the free encyclopedia

The Nissan Leaf's battery pack is ... Nissan stated that only 48% of Leaf reservations from the initial 2010 ... Nissan unveiled the Nissan Leaf Aero ...
Read more

Replacing EV Batteries: Your Costs Will Vary | PluginCars.com

Replacing EV Batteries: Your Costs Will Vary. ... Nissan just opined that its LEAF battery pack will have 80 percent ... just the initial purchase and ...
Read more

99.99% Of Nissan LEAF Batteries Still In Operation ...

99.99% Of Nissan LEAF Batteries Still In Operation. ... LEAF battery failure, Nissan, Nissan Leaf, ... So storing a battery pack at 70 degrees ...
Read more

Overview of Battery R&D Activities - US Department of Energy

Nissan Leaf . All Electric ... Data based on the results of the initial PHEV battery development contracts awarded ... battery pack assembly
Read more

Tsunami Reveals Durability of Nissan’s Leaf - The New York ...

A lithium-ion battery component placed on a Leaf at a Nissan ... analysis and opinion delivered ... Tesla says it encloses each battery pack’s ...
Read more