solutions for an electrified world · 2020. 11. 17. · g-class and hummer, evex porsche 910e...

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kreiselelectric.com

SOLUTIONS FOR ANELECTRIFIED WORLDJune 2020


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Research & development centerfor best talents

2020 2.0 Nr.: 2


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TimelineLeading battery technology provider

Kreisel HQ opened in Rainbach, Upper AustriaKreisel sets a milestone by creating the infrastructure for future growth

High-performance drivetrain for serial production, the SAY29E Runabout CarbonThe fastest e-Boat in the world

Increased the capacity of the eGolf by 130% to 55.7 kWhKreisel eGolf offers more than twice the range of a standard eGolf

2014 2015 2016 2017 2018

Johann Kreisel

Markus Kreisel

Philipp Kreisel

20

14

Formation of Kreisel Electric GmbH

First electric car conversion by the Kreisel brothers

20

12

Fully electric Mercedes G-Class and Hummer, Evex

Porsche 910E Limited Kreisel Edition

20

15

Opening of new test center in

Rainbach

2019

Electric Porsche Panamera, Mercedes Sprinter and Skoda Yeti

Won contract for technology partnership (licensing) with a leading tier 1 supplier

Kreisel set the…

…electric kart world record: 0–100 kph in 3.1 seconds

17.11.2020 3

Kreisel develops high performance drivetrain kit awarded as exclusive powertrain provider for the FIA World RX

SOP of 2nd module generation based on 21700 cells

2020


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Competences & technologies


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Engineering & simulation Software development Production & construction Testing & quality

2020 2.0 Nr.: 5

Focus on in-house research & development, validation and assembly


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Platform strategy as key business driver for growth due to short development cycles for customers

2020 Nr.: 62.0

Platform development

Development of fully validated

platform-architecture (according

to automotive and other

relevant standards) battery

modules and strings

Prototyping

Fast time to market - customers can

immediately start testing prototypes

with the validated modules

In-house manufacturing

Low development cost at pack level due

to validated modules according to

standards

LicensingKnow–how transfer of fully validated

platform design and manufacturing

technology (serial products according to

standards)

Platform


CONFIDENTIAL2020 2.0 Nr.: 7

Projects & solutions


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Automotive Urban transportation Stationary Marine

Wide variety of e-mobility projectsMultiple battery applications – mobile and stationary

2020 Nr.: 82.0

Motorsport


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Battery technology

2020 2.0 Nr.: 10


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Patent protected architecture based on cylindrical cell

2020

2.0

Nr.: 11

4

3

2

1 Cylindrical cells (21700)

Electrical contacting spring with fuse

Hollow block for direct liquid cooling

Mechanical base plate

1

2

3

4

Favourable cost at cell level

State of the art processes lead to 2nd source ability of all parts

Compact assembly

Economic industrialization

Serial and parallel flow on module & stack level

Design to cost

Cell Module PackStack


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Superior battery pack technology at competitive cost

2020 2.0 Nr.: 12

Design to cost

Superior performance through best-in-class thermal management

Improved safety due to unique propagation prevention features

Modularity as a result of “Lego” principle

Competitive prices due to clear focus on “design to cost”

Design to cost

Performance Safety

Modularity


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Benchmarks show KEs superior cooling efficiency and charging

Cooling technology comparisonRequired thermal energy for cooling (per kWh nominal capacity)

The heat produced by the battery cells of a Kreisel battery is directly transferred

to the cooling fluid.

The temperature difference between the fluid and the battery is up to 28% lower

in Kreisel batteries compared to conventional liquid cooled batteries

Vehicles equipped with Kreisel batteries have to use less energy and smaller

radiators to release the heat to the environment.

Side wall cooling

→ Increased jelly roll temperature

Base plate cooling

→ Significantly increased temperature differences

KREISEL immersion cooling

→ Best cooling performance

2020 2.0 Nr.: 13


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𝑪 − 𝑹𝒂𝒕𝒆:

𝑪𝒖𝒓𝒓𝒆𝒏𝒕

𝑪𝒂𝒑𝒂𝒄𝒊𝒕𝒚=

𝟏𝟎𝟖𝑨

𝟑𝑨𝒉 𝟏 𝑪𝒆𝒍𝒍

= 𝟑𝟔𝑪

2020 2.0

• Test shows best-in-class cooling performance and lifetime compared to closest competitor

• Cell-stress by extreme racing cycle up to 36C

Nr.: 14

Kreisel cooling would lead to energy savings compared to other cooling concepts (same temp. level)

Side wall cooling derates after 400s if environ-mental temperature is ≥30°C (measurement)

Racing profile & cooling effect on lifetimeCompetitive cooling benchmark with 21700 cell @ discharge 36C and charge 15C

Test environment & cell performance

Yokohama-S

TiergartenAntoniusbuche

Döttinger Höhe

MeuspathNurburg

Nordschleife

Bilstein-Kurve

Advan-BogenVeedol-Schikane

Mercedes-Arena

HatzenbachHocheichen

Quiddelbacher Höhe

Flugplatz

Schwedenkreuz

Aremberg

Fuchsröhre

Adenauer-Forst

Kallenhard

Metzgesfeld

AdenauWehrseifen Ex-Muhle BergwerkKesselchen

Klostertal

Caracciola-KrussellHohe Acht

Wippermann

Eschbach

Brunnchen

PflanzgartenStefan-Bellof-S

Schwalbenschwanz

B257

B258

B257

B412

Nordschleife

race-track

21km

8.3min

89% SOH @ 4,114 cycles with Kreisel cooling vs. 86% SOH with side wall cooling

4,114 cycles = 86,394 racing km @Nürburgring Nordschleife

Hybrid test demonstrates the increased cell performance based on KE thermal mgt


CONFIDENTIAL2020 2.0 Nr.: 15

• Long cycle life depends on

− Correct cell

− Optimized cooling strategy

− Optimal BMS parametrization

• Influence of temperature spread on cycle life

− Higher module temperature caused by high currents will have minimum impact on cycle life if the exposure time is short

− Avoid cells/modules having continuously different temperature than the average

Delta T on cell level

Delta T on pack

level

• KE cooling ensures homogeneous temperature within cells (ΔT 7°C @1C)

• Significant influence of Delta T within cell on lifetime

• Due to thermal conductivity significant higher efficiency of KE cooling

Influences on battery life time

Delta T @pack 1,4°C @1C charge @24 LPM flow rate

Measured


CONFIDENTIAL2020 Nr.: 162.0

Step charge method by using a 21700 5Ah cell

Testing parameters

Testing results

Step charge method

Max. 3C - rate charging power during step chargepattern

1.3C- rate continuous discharge

120 minutes cycle time (full charge & discharge)

SOC 0% to 80% charge in


CONFIDENTIAL2020 2.0

KEs technology has the safest system ratio in terms of energy density (volume and weight)

Nr.: 17

Heating wire test

State of charge Cells Passed

100% 21700 high energy cell with 250Wh/kg +

Thermal runaway Propagation

Temperature evaluation

Module features

Cell propagation protection Yes

Single cell protection Yes

Degassing channel Yes

Non-combustible materials Yes

Integrated module heat shield Yes

Arisen toxins (without cell) No

Highest safety standards confirmed by thermal runaway tests


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3Ah 5Ah

Hig

h P

erf

orm

an

ce

Hig

h E

ne

rgy

20 module configurations

Research & Development

Validation up to string level for platform Fast time to market Low engineering/investment cost

Nr.: 19

Variety of 21700

cell formats

36

9 9 9 9

18 18

6 6 6 6 6 6

12 12 12

Modular battery technology ideal for multitude of e-mobility applications


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Module/stack validation shows proof-of-porduct in all relevant focus topics

Costs

High heat capacity

High thermal conductivity

Global warming potential 10 years via Design Validation Plan

Air- and creepagedistances, protection againstdirect contact of parts undervoltage, Single Cell Fuse (SCF),voltage measurement, HV stability

Propagation tests (pass criteria: thermal runaway trigger cell only / no propagation)

Liquid

Battery Thermal Management System (BTMS)

Cooling performance incl. lifetime

Peak value in P3-Charging Index (0.72-0.8)

Continuous load @ steady state conditions (25°C fluid / max. 35°C inside cell) per 36p-module a 0.52kWh @3l/min leads to cooling performance:

• PHEV cell (4Ah, 15mΩ): 4.6C

• BEV cell (4.8Ah, 22mΩ): 3.15C

No cracks

No flying parts

No loosening of screws

Shock/vibration/crush according to:

• ISO19453-6 (new standard 2020)

• ISO 62660-2 (worst case)

✓

✓

✓

✓

✓

✓✓

Propagation Test

• According to:

• RSV12-2016 - Norwegian Maritime Authority (Marine)

• GTR20, ISO6469-1 AMD1, IEC TR 62660-4 (Automotive)

• IEC 62619, UL9540 (Stationary)

• Test conditions: Heating wire, 50°C, 100% SOC, no BMS, no circulation of fluid, mid cell, 24h observation

• Risk in total*: 0.005ppm

Criteria system tightness:


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SOLUTIONS FOR ANELECTRIFIED WORLD

solutions for an electrified world · 2020. 11. 17. · g-class and hummer, evex porsche 910e...

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