solutions for an electrified world · 2020. 11. 17. · g-class and hummer, evex porsche 910e...
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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
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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
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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
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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
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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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CONFIDENTIAL2020 2.0
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