BATTERY CELL TECHNOLOGY. 20.11.2019 DR. PETER LAMP … · 2020-03-03 · bmw group strategy:...

BATTERY CELL TECHNOLOGY.20.11.2019

DR. PETER LAMPHEAD OF RESEARCH & DEVELOPMENT BATTERY CELL TECHNOLOGY, FUEL CELL

DEVELOPMENT

& PRODUCTION

INHOUSE

BMW GROUP SUSTAINABLE MOBILITY. INHOUSE DEVELOPMENT & PRODUCTION OF BATTERY SINCE 2008.

FULL

SPECIFICATION

AND DESIGN

COMPETENCE

Subcomponents/Electrodes

1

Jelly Roll

2

Battery Cell

3

Subsystem/Module

4

Battery Pack

5

xEV Vehicle

6

Battery Cell Technology @ BMW Group

Battery Pack

Battery Cell

Jelly Roll /

Electrodes

Active

Materials

STRONG INTERACTION FROM MATERIAL TO VEHICLE –OEMS NEED TO BE INVOLVED IN CELL & MATERIAL DEVELOPMENT.

PEAK

POWER

TEMPERATURE

PERFORMANCE

LIFETIME

SAFETY

ENERGY

DENSITY

SPECIFIC

ENERGY

COST

CHARGE

CURRENT

20% OF COST

ADDRESSED

80% OF BATTERY

COST IS CELL COST

80% OF

CELL COST IS

MATERIAL COST


HUGE PROGRESS ON CELL ENERGY DENSITY AND COST. FURTHER COST REDUCTION NECESSARY.

DEVELOPMENT OF ENERGY DENSITY

AND COST OF BATTERY CELLS

GEN3

GEN4

GEN5

Wh/L

2013 2014 2015 2016 2017 2018 2019 2023+2020 2021 2022

€ /kWh

Increasing

Challenge



ENERGY DENSITY INCREASE MAINLY DRIVEN BY MATERIAL IMPROVEMENTS.

HIGH

PERFORMANCE

MATERIALS

IMPROVED

ELECTRODE

DESIGN

OPTIMISED CELL

TECHNOLOGY

Anode Material

Cathode Material

Electrode design

Cell design Increased volume utilization

(stacking vs. winding)

Reduced foil thickness

Increased cell size (reduction of

non active material)

Graphite 360 mAh/g

Graphite + SiOx 500-600 mAh/g

Si – C Composite 1200 mAh/g

NMC

111 150 mAh/g

532, 622 180 mAh/g

811 210 mAh/g

> 90% Ni 230 mAh/g

Increased loading

Optimization coating area

ROADMAP FOLLOWS CATHODE AND ANODE MATERIAL DEVELOPMENT. IMPROVEMENTS IN OTHER COMPONENTS IMPORTANT.


FULL CHEMISTRY SYSTEM HAS TO BE DEVELOPED IN COMMON TO ACHIEVE COMPETITIVE SYSTEM.

CATHODE:

811 close to market

> 90% Ni in final development

Beyond?

ANODE:

SiOx possible but cost?

Si-C in final development; industrialization, cost?

Li-metal? Only with solid electrolyte.

ADDITIONAL COMPONENT DEVELOPMENT NEEDED TO MEET TARGETS:

Separator with enhanced thermal stability

Electrolytes and additives to reduce and/or slow down energy release under

abuse conditions

Binder and conductive agents to be optimized for new materials/material

surfaces for good electrical/mechanical properties

MATERIAL AND PROCESS DEVELOPMENT HAVE TO BE DONE IN PARALLEL.


COATED PRESSED SLIT

Particle structures can be damaged.

Cathode material powder densities

and binder / conducting agents have

to be optimized.

Substrates foils have to be carefully

selected.

Calendaring processes have to be

improved.

BMW GROUP STRATEGY: KEEPING KEY KNOW-HOW IN OUR OWN HANDS.FULL CELL DEVELOPMENT FROM MATERIALS TO TARGET CELL.

START OF CONSTRUCTION

11/20174 YEARS OVERALL COST

200 MIO. €BCCC TECHNICAL CENTER

8000 M2

BCCC OFFICE SPACE

4000 M2

EMPLOYEES IN THE DEPARTMENTS

UP TO 200DRY ROOM AREA

1000 M2

START OF PRODUCTION

12/2019



BCCC PROVIDES ALL NECESSARY DEVELOPMENT TOOLS AND STEPS.INTERNATIONAL NETWORK IS THE ESSENTIAL INPUT.

COOPERATIONS

OEMS

INSTITUTES

STARTUPS

INDUSTRY

ACADEMIA

Material characterization

Chemistry development

Recipe development

Performance and safety test

Post mortem analysis

0 50 100 150 2002.0

2.5

3.0

3.5

4.0

4.5

EC-1 HYU 40L 1st #1

EC-1 HYU 40L 1st #2

EC-1 HYU 40L 2nd

#1

EC-1 HYU 40L 2nd

#2

EC-1 HYU 40L 3rd

#1

EC-1 HYU 40L 3rd

#2

2.7-4.3V, 0.1C

Vo

lta

ge

/ V

Discharge capacity / mAhg-1

0 10 20 30 40 50 60 70 80 90 100120

140

160

180

200

220

EC-1 HYU 40L 1st #1

EC-1 HYU 40L 1st #2

EC-1 HYU 40L 2nd

#1

EC-1 HYU 40L 2nd

#2

EC-1 HYU 40L 3rd

#1

EC-1 HYU 40L 3rd

#2

2.7-4.3V 30℃

Dis

ch

arg

e c

ap

ac

ity / m

Ah

g-1

Number of cycle

20mm

3.2mm


BMW GROUP SUSTAINABLE MOBILITY. FULL CONTROL OF BATTERY VALUE CHAIN – CLOSING THE LOOP.

Raw material

(mining, refining)

Battery grade

material production

Battery cell

development

Battery cell

manufacturing

Battery module and

system development

& manufacturing

Product

implementation

(use phase)

Recycling,

Recovery of

all valuable

materials

THANK YOUFOR YOUR ATTENTION!


BATTERY CELL TECHNOLOGY. 20.11.2019 DR. PETER LAMP … · 2020-03-03 · bmw group strategy:...

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