DENSO showed at the EVER 2017 our contribution to OPTEMUS project (EU H2020 funded project): preconditioning strategy and HMI, link to eco-routing functionality, communication technologies, efficient water-to-water heat pump system.
Why Does My Porsche Cayenne's Exhaust Sound So Loud
Efficient cabin and powertrain preconditioning for EVs with a water-to-water heat pump system
1. Efficient cabin and powertrain preconditioning for EVs
with a water-to-water heat pump system
EVER 2017
Ecologic Vehicles - Renewable Energies, 11-13 April 2017
Dr. Andrés Caldevilla
DENSO INTERNATIONAL EUROPE
Technology Planning Department
2. April 2017 2
Agenda
Preconditioning strategy
User-triggered
Predictive
Preconditioning HMI
Use Case 1: User-triggered
Use Case 2: Parking house
Link to the eco-routing functionality
Communication technologies
Link to the Compact Refrigeration Unit (CRU)
3. April 2017 3
Agenda
Preconditioning strategy
User-triggered
Predictive
Preconditioning HMI
Use Case 1: User-triggered
Use Case 2: Parking house
Link to the eco-routing functionality
Communication technologies
Link to the Compact Refrigeration Unit (CRU)
5. April 2017 5
Preconditioning strategy: 1) User-triggered
User indicates desired “boarding”-time and temperature
Triggered by the user over app
6. April 2017 6
Preconditioning strategy: 2) Predictive
Vehicle foresees driver’s approach and starts the preconditioning process
correspondingly
Profile predefined by user (temperature, 2)
Event-triggered (events defined in user’s profile)
Close house door, switch off lights, switch off computer, user’s approach to the vehicle, 2
9. April 2017 9
Agenda
Preconditioning strategy
User-triggered
Predictive
Preconditioning HMI
Use Case 1: User-triggered
Use Case 2: Parking house
Link to the eco-routing functionality
Communication technologies
Link to the Compact Refrigeration Unit (CRU)
12. April 2017 12
Agenda
Preconditioning strategy
User-triggered
Predictive
Preconditioning HMI
Use Case 1: User-triggered
Use Case 2: Parking house
Link to the eco-routing functionality
Communication technologies
Link to the Compact Refrigeration Unit (CRU)
14. April 2017 14
Agenda
Preconditioning strategy
User-triggered
Predictive
Preconditioning HMI
Use Case 1: User-triggered
Use Case 2: Parking house
Link to the eco-routing functionality
Communication technologies
Link to the Compact Refrigeration Unit (CRU)
16. April 2017 16
In-Car Communication: a) USB-to-CAN
USB2CAN
(Gwentech GT1026)
Pros
Easy to setup
Secure → cable connection between
car’s CAN interface and tablet
Cons
− Not a mature product → issues with
too many messages on the CAN bus
− No support from the vendor
17. April 2017 17
In-Car Communication: b) Bluetooth-to-CAN
Bluetooth2CAN
(Case GmbH C2BT-Series)
Pros
Easy to setup
Built-in bluetooth support in any
Android / iOS tablets
Cons
− Good for demo purposes
18. April 2017 18
In-Car Communication: c) WiFi-to-CAN
WiFi2CAN
(Kvaser BlackBird v2)
Pros
Professional product
WiFi in AdHoc / Infrastructure Modes
WiFi security
Easy REST API for basic CAN access
Cons
− Expensive → hardware + custom driver
(~€9,000)
− Needs detailed configuration before use
− Advance feature only available through
custom driver
19. April 2017 19
Out-Car Communication: Car-to-Mobile
Car2Mobile
(Google Cloud Platform)
Pros
Google Cloud Messaging Infrastructure
Highly reliable & secure → can handle billions of messages
Easy to integrate → support for Android and iOS
Cons
− Tied up to Google Technologies
and infrastructure
20. April 2017 20
Agenda
Preconditioning strategy
User-triggered
Predictive
Preconditioning HMI
Use Case 1: User-triggered
Use Case 2: Parking house
Link to the eco-routing functionality
Communication technologies
Link to the Compact Refrigeration Unit (CRU)
21. April 2017 21
Compact Refrigeration Unit (CRU)
Water-to-Water heat-pump system
two-plate type heat exchangers
water-glycol mixture as fluid
natural gas as refrigerant
ECM
Inverter
HVAC
Battery
CRU
Engine
TMECU
22. April 2017 22
Heat pump system
∗
= 20°C ∗
= 20°C
, , , ,
= −10° = 30°
, , , ,
14 % (20 km) higher driving range at
„normal“ ambient conditions (solely
reduction of traction energy through
Eco-Driving, Eco-Routing – without
Energy Harvesting)
38 % (44 km) higher driving range for
Use Case 1 (hot ambient conditions)
70 % (63 km) higher driving range for
Use Case 2 (cold ambient conditions)
23. Thank you for your attention!
The OPTEMUS consortium
26. April 2017 26
USB-to-CAN: Hardware specifications
Hardware – Gwentech GT1026
USB
Isolated to 1kV
Charges the tablet or phone during use
Standard D-Sub 9 pin connector (in accordance with CiA® 102)
CAN Compliant to specification 2.0A and 2.0B
Extended operating temperature range of -40 to 85 °C
Timestamps with 125 µs resolution
For use on Android® devices (3.1 and higher)
API available for developing custom apps
Pros
Easy to setup and no configuration needed → The
CAN adapter is plugged in the USB and is identified
as an Android Accessory
Supplies power to the tablet → No need for extra
power supply for the tablet
Cons
There is no security in place, as the physical access
to the adapter allows any intruder access to the CAN
Bus
Platform limitations (only works as an Android
Accessory), therefore an Android device is needed for
the communication
Physical access to the adapter needed to reset it in
case that the connection hangs (by removing the USB
cable and connecting it again to the tablet)
The micro-USB connector is not ideal for systems
with a lot of vibrations (it can get damaged with time
and will not work properly)
27. April 2017 27
Bluetooth-to-CAN: Hardware specifications
Hardware – Case C2BT2
Wireless transmission of CAN-Bus data via Bluetooth® Class 2
Usage of the common Serial Port Profiles (SPP)
Implements CAN V2.0B
Programmable standard CAN-Bus data rates up to 1 Mb/s
Supports Standard- and Extended frames (11-bit and 29-bit Identifier).
Receive buffers, masks and filters:
Two receive buffers with prioritized message storage
Two 29-bit filters
Two 29-bit masks
Transmission of timestamp (16bit Timer)
Selectable Echo Function
9-pin D-Sub Connector for CAN Connectivity
Integrated Bluetooth Antennae
Extended operating temperature range of -40 to 85°C
Pros
Improved security due to the PIN paring compared
to the USB-to-CAN solution
No need to physically access the connector, which
can be installed anywhere (range up to 15m)
Supports any client that has Bluetooth capabilities
(iOS, Windows Mobile, Android)
Cons
Additional security needs to be implemented for the
communication, as PIN paring is not enough
Extra development needed for the Bluetooth
communication & security
Not suited for time critical communication (60ms
delays for CAN message)
Extra power supply for the tablet needed
28. April 2017 28
WiFi-to-CAN: Hardware specifications
Hardware - Kvaser BlackBird v2
WLAN version 802.11b/g/n
IP65-rated for protection against water and dust
HTTP-based REST API
Up to 75% increased range
Ad-hoc and Infrastructure mode
Lightweight but highly rugged aluminum housing. Polyurethane cabling suitable for extreme environments
Galvanic isolation of the CAN bus driver stage to protect the hardware
Interfaces the CAN bus with a standard D-SUB connector
Configured via USB connection
Can be used as a wired interface
Operating voltage CAN bus (7 - 40 VDC)
Messages are time-stamped and synchronized with a precision of 25 µs
Supports High Speed CAN (ISO 11898-2)
Supports 11-bit and 29-bit identifiers.
Extended operating temperature range of -40 to 70°C
Pros
Improved security with WAP2
Can work in Ad-hoc or Infrastructure modes
Provides an HTTP based interface to send/receive
CAN messages
No need to physically access the connector, which
can be installed anywhere (range up to 100m)
Supports any client that has Wi-Fi capabilities (iOS,
Windows Mobile, Android)
Cons
Wi-Fi settings need to be hardcoded to the tablet
hotspot
The tablet needs to create the HOTSPOT so that the
commands received from the cloud on 3G/LTE can
reach it
Security risk for the Wi-Fi to be accessed by
unwanted parties
Communication in the same WLAN is not encrypted
(HTTP)
Not suited for time critical communication
Extra power supply for the tablet needed
