29 November – 2 December 2021
HERE you meet the experts from Europe, America and Asia!
“As a global supplier of innovative and fuel-efficient powertrain solutions, we believe that CTI Berlin is an excellent platform to showcase our latest solutions and exchange ideas with market leaders. A constant dialogue is vital to grasp the ever-changing trends in the dynamic automotive market. CTI Berlin represents an ideal place for us to follow […]
“As a global supplier of innovative and fuel-efficient powertrain solutions, we believe that CTI Berlin is an excellent platform to showcase our latest solutions and exchange ideas with market leaders. A constant dialogue is vital to grasp the ever-changing trends in the dynamic automotive market. CTI Berlin represents an ideal place for us to follow the latest trends in the field of transmission and be an actor of change. Closely monitoring and adapting to the market, our agile teams develop differentiating technologies to anticipate our customer needs. Once more, we are excited to participate in this great event. “
Sebastien Mazoyer
Chief Sales & Marketing Officer
“Highly efficient and affordable electric drive axles are essential for the mass adoption of electric vehicles, whether it is a battery electric vehicle, plug-in hybrid vehicle or fuel cell vehicle.”
Said Karel Vergote, Global Technology & Innovation Leader, Punch Powertrain, who presented during CTI SYMPOSIUM USA 2020 in October.
“The e-drive axle provides the transfer from electrical power into mechanical power and typically consists of an electric motor, inverter and a single speed transmission. The efficiency of the complete unit is a key aspect of optimization, as it affects electrical driving range, while reducing material and manufacturing costs and make electric vehicles more affordable for the broad public.
To address this market need, a new 150kW e-drive axle for passenger cars was developed. We used a holistic approach to optimize the system for cost and efficiency. Co-design methodology was applied to make system level assessments within the development taking into account hardware as well as control parameters. The integration of motor, inverter and transmission leads to benefits to the system in terms of efficiency, cost and power density. Its compactness renders the new e-drive axle to be applicable both as a front and rear axle drive. The design methodology was applied to a specific case, but the principles are also valid for other types of e-drive developments.”
The system holds further interesting aspects which will be presented during CTI SYMPOSIUM EUROPE 2020 in December. We are looking very much forward to the presentation of Joris Bronckaers, Systems Engineer.
The energy providers, communities and automotive industry are working on the energy and mobility transformation. The production, distribution, usage of hydrogen as well as the development and application of efficient technologies vital for a successful turnaround. During the CTI SYMPOSIUM EUROPE leading experts form the energy and automobile sector are discussing the future of hydrogen […]
The energy providers, communities and automotive industry are working on the energy and mobility transformation. The production, distribution, usage of hydrogen as well as the development and application of efficient technologies vital for a successful turnaround.
During the CTI SYMPOSIUM EUROPE leading experts form the energy and automobile sector are discussing the future of hydrogen as an energy carrier and its application in vehicles
Discuss with the following experts, among others:
Dr Wolfgang Warnecke
Chief Scientist Mobility at Shell in his plenary speech
The question whether H2 or BEV is a future proof technology will be addressed in a panel with
Konstantin Neiß, director R&D Transmission and eDrives at Daimler
Dr Stephan Herbst, Technical General Manager Hydrogen at Toyota
Felix Horch, Head of the Electromobility Department at Fraunhofer IFAM
In a specific session dedicated on hydrogen from production to vehicle application scientists and engineers of Shell, Toyota, FIAT Powertrain Industrial and Hyundai will go into details about
Join the CTI SYMPOSIUM GERMANY Digital Edition on December 8 and 9.
Benefit of this unique meeting of international experts to gather information most relevant for your future business strategy and generate valuable new business contacts.
”The CTI Symposium is for us PUNCH Powerglide, one of the few independent gearbox manufacturers, a must-attend event for meeting and networking with important decision makers across the transmission and drivetrain world in the automotive industry. Participating at the European edition of the Symposia is of key importance for us, since we want to strengthen […]
”The CTI Symposium is for us PUNCH Powerglide, one of the few independent gearbox manufacturers, a must-attend event for meeting and networking with important decision makers across the transmission and drivetrain world in the automotive industry. Participating at the European edition of the Symposia is of key importance for us, since we want to strengthen the development of future products in the European Market.”
Dr. Oliver Nass
Director Sales & Marketing
PUNCH Group
”Electrification is a great challenge for all players in the automotive industry. There is no single solution being able to meet all customer’s requirements and needs. PUNCH Powerglide has adapted this reasoning to its own product development and stands as a partner for different eDrive concepts: from modular solutions where we supply for example the gears, the shafts and the housings up to integrated solutions that include the electric motor, the inverter and the gearbox. ”
Wolfgang de Loth
Director Research & Development and New Business Development
Punch Powerglide
Due to the change from internal combustion engines to electric drives in automotive applications, both the demand as well as the requirements for laminated stacks that form the iron core of an electric traction motor are increasing. ELECTRIC DRIVE UNIT COMPONENTS In order to optimize energy consumption and reduce the installation space, the iron losses […]
Due to the change from internal combustion engines to electric drives in automotive applications, both the demand as well as the requirements for laminated stacks that form the iron core of an electric traction motor are increasing.
In order to optimize energy consumption and reduce the installation space, the iron losses of laminated stacks for traction motors must be reduced. On the other hand, they must be able to withstand ever higher speeds.
One way to meet this requirement is to stack thin layers of steel with a thickness ≤ 0.2 mm which are bonded together to create a stack. The thinner steel layers reduce eddy-current losses, with the adhesive layer acting as an insulator between the layers. Bonding, in comparison to known processes such as clinching/ interlocking, produces a significantly higher bond strength between the individual layers. This bonding strength is required to prevent the rotor stack from opening up at high speeds.
The main problem when using thin steel strips is a reduced number of strokes in the stamping process due to the reduced feed rate of the steel strip being processed. The increased number of layers and the reduced feed rate lead to an increase in the processing time for the same stack height compared to commercially available steel strip thicknesses. The step from 0.3 mm to 0.2 mm layer thickness results in a reduction in output of more than 80%.
To solve this problem, ElringKlinger developed an improved production process.
As a manufacturer of coated, metal flat gaskets, ElringKlinger has decades of experience in the coating, stamping and bonding of metal sheets with thicknesses ranging from 0.10 mm to 0.30 mm.
Special stamping processes have been developed specifically for the product group of multi-layer metal flat gaskets, which allows for several layers to be stamped simultaneously in one stamping process. This technology has been transferred to the production of bonded stacks.
In the first step, thin steel strips with a thickness of 0.2 mm are fully coated with a thermally activated adhesive. In the next process step, these coated steel strips are bonded to form a three-layer composite. From this composite material, individual three-layer bonded stacksare then stamped, which are collected, aligned and have a final bonding to form a complete rotor/stator stack.
Due to the higher stiffness of the composite material compared to individual sheet steel strips, the feed rate can be increased so that the same number of strokes is achieved as when processing 0.3 mm thick sheet steel strips. In addition, the output quantity is increased compared to single-stroke production – 0.6 mm stacking height can be produced per stroke.
Advantages of ElringKlinger laminated stacks
The adhesive developed by ElringKlinger offers not only reduced curing times but also excellent media resistance to oils, hot air and coolants. ElringKlinger has a vast experience using very similar adhesives in the production of gaskets for automatic transmissions, which the company has been producing for many years.
Due to the very good media resistance and mechanical strength of the adhesive bond, the sheet steel stacks are permanently internally sealed during lifetime. The lifetime performance of the sealing has already been confirmed in initial validations trials by media storage and internal pressure tests.
Due to this characteristic, direct liquid cooling can be realized directly inside of the stator or the rotor by means of stamped channels. The reduced eddy-current losses of the thin steel sheets and the improved cooling enables a longer peak power, especially in high load ranges.
Due to the isolating effect of the adhesive layers and without the mechanical connection points, which occurs in the clinching/ interlock process, there is no “short circuit” between the layers and the magnetic flux is not interrupted.
By eliminating gaps between the layers due to the adaption of the steel sheets, a higher stacking factor can be achieved with the bonding process.
ElringKlinger laminated stacks significantly increase the efficiency for electric motors in the high-performance applications as well as for drive concepts that are focusing on weight reduction.
ElringKlinger Contacts
Alexander Heinzelmann
Alexander.Heinzelmann@elringklinger.com
Fon: +49 (7123) 724 88401
Eberhard Griesinger
eberhard.griesinger@elringklinger.com
Fon: +49 (7123) 724 88070
