BOSCH STANDARD BATTERY FOR 48V BRS - cii …cii-resource.com/cet/AABE-03-17/Presentations/BATO/Grundmann_Sve… · bosch standard battery for 48v brs dr. sven grundmann director 48v

BOSCH STANDARD BATTERY FOR 48V BRS

DR. SVEN GRUNDMANNDIRECTOR 48V BATTERYBOSCH BATTERY SYSTEMS GMBH

AABC - Bosch 48V Standard Battery

Confidential | BBSD/PJ-48V | 1/9/2017© Robert Bosch Battery Systems GmbH 2017. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of application for industrial property rights.

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Agenda

Market Drivers and Requirements for 48V Systems

Key Design Decisions and Overview of 48V Standard Battery

Summary & Outlook

Q&A



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Worldwide CO2 Targets for Automotive Industry

WW-CO2 legislation is the main driver for Low Voltage Hybrid Standard Segment

202598g CO2/km

56,2 mpg

USA2021

95g CO2/km(4,1 l/100km*)

Europe

20205l/100km

(116g CO2/km*)

China2020

20,3 km/l(114g CO2/km*)

Japan

mpg: miles per gallon *2,32 kg CO2/l



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Market Drivers by Region and derived Product SegmentsRegion Market DriversEurope Legislation

• CO2 targets 95g/km in 2021• Emission reductionComfort• Comfort start, perceived boostBoard net, autonomous driving

China Legislation• Fuel consumption CAFC target 5l/100km in 2020• Single vehicle regulation• 48V included in draft for Energy Saving Vehicle policy

USA Legislation CO2 target Comfortable Start

Japan Legislation• Mainly for J-OEM in APA, NA, EURKei-car segment• first electrification step

India Legislation• CO2 target CAFE Phase 2 from 2022• Emission regulation BS6• Incentive programme for hybrid vehicles

Derived Product SegmentsStandard Segment: Entry into 48V for majority of OEM w/ SOP ≥ 2018, P0

BRS topology Drivers: CO2, Basic comfort features (Boost) in CC

Segment

Performance Segment: Vehicle SOP ≥ M2020, Px BRS Topology Driver Co2, comfort and boardnet Roll-out depending on end-consumer’s willingness to pay Wide range of OEMs’ performance specs

Entering the 48V Battery market, Bosch first targets the standard segmentMain focus is on CO2 reduction

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48V Battery Market Share by RegionMarket Share by Region 2020 [%] Market Share by Region 2025 [%]

0,10,0

CNEUINJPUS

50%

35%

10% 0,20,1

CNEUINJPUS

China and Europe are main regions for 48V BRS applications. Forecasted market volumes extend fast.

48%38%

13%

~80% are 48V standard batteries 48V market growths 3fold from 2020-202548V standard battery with ~40% market share



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Agenda



Summary & Outlook



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Key Market Requirements and BRS Design Inputs Key Market Requirements Design Input

Highly cost competitive market with major volume in China

Design to cost with high local content in CN. GB/T compliance.

High P/E ratio for short current pulses (Imax 300A) and different drive cycles

Proven cell chemistry and methods for quick performance and life time analysis depending on drive cycles and temperature loads.

Fit into existing vehicle structures Optimized packaging.

Most applications inside passenger compartment NVH optimized.Temperature load and heat transfer to be reflected in performance and life time models.

OEMs source platforms for different models (gasoline, diesel)

Platform battery approach for BRS. Powertrain know-how and engineering support available in different markets for various powertrain architectures.



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World Wide Footprint of Batteries @ Bosch

Stuttgart (Region)

HeadquarterResearch & Development

EM: E-MotorPE: Power ElectronicsBAT: Battery Pack

DevelopmentDetroit (Region)Orion, MI

Tokyo (Region)YokohamaSales, Project Mgmt

Shanghai UAESlocal development and production EM, PE, system integration BAT

BAT Plant& Dev.Wuxi

BAT PlantEisenach, BambergBAT Plant

Springboro, OH

Bosch has local customer support in 48V key regions available.1st Bosch 48V battery series production in China

BangaloreSales, Project Mgmt



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Cell Chemistry Set-up is Key Factor for System DesignDefine cell capacity and number of required cells for targeted usable energy

NMC:LTO and LMO:LTO are not preferred due to number of cells costs, packaging Detailed comparison between LFP:C and NMC:C done. NMC:C showed advantages in Bosch’s system spec, costs



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Concept Study on 48V Batteries optimized for CO2Cell Nr. 1 2 3 4 5

Configuration 13s1p 13s8p 12s1p 12s1p 12s1pCell capacity 5.9 Ah 16 Ah (per 8p) 5 Ah 5 Ah 8 AhHousing Prismatic 18650 Prismatic Prismatic PrismaticChemistry NMC/

GraphiteNCM/

GraphiteNCM/

HardCarbonNCM/

GraphiteNMC/

Graphite

Picture

CO2 reduction 9 g/km 8-9 g/km 9-10 g/km 9-10 g/km 11.5-12g/km

Concept with set-up 5 was selected due to best CO2 reduction



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Bosch Battery Specification and Benefits

Bosch 48 V Battery passive cooling approach enables a simplified vehicle integration and comfortable driving.

Criterion Value

Cell configuration 12s1p, 8 Ah, NMC/Graphite

Opt. Dimensions Height 90 mm

Cooling Passive cooling

Operation Temperature (Cell) -40°C up to 75 °C **)

Charge Power ****) (10 s) 13 kW

Discharge Power ****) (10 s) 11 kW

Weight < 7kg

Interfaces 48V, 12V, CAN

Battery Management U, I, T monitoringSOC, power prediction, SOH

Functional Safety ASIL C

Battery Disconnect Contactor, fuse

Life Time 10 yrs, 10MWh energy throughput, Phoenix temp. histogram

1st SOP 2018 in China

1. Simplified vehicle integration

Compact battery design enables flexible mounting, e.g. underneath seat or spare wheel compartment

Passive cooling omits additional cooling supply and enables noiselessness driving

2. Good cell performance

Reliable cell from established cell manufacturerGood power and lifetime performance at even elevated

temperatures and very good low temperature performance

3. High reliability

ASIL C functional safety in E/E architectureRobustness through mechanical strength

**) Aging impact based on share of use time at high operating temperatures ***) Depending on temperature, number and length of pulses ****) BOL, 25 °C, 50% SOC



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Agenda



Summary & Outlook



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48V BRS market exists and offers considerable volumes

OEMs check 48V for increasing number of use cases and different vehicle segments

2nd generation of 48V will target additional powertrain and board net functions

Cell power values will increase with even higher increase of energy requirements

48V is not a short interim bridge technology

Summary & Outlook

Documents

BOSCH STANDARD BATTERY FOR 48V BRS - cii …cii-resource.com/cet/AABE-03-17/Presentations/BATO/Grundmann_Sve… · bosch standard battery for 48v brs dr. sven grundmann director 48v