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Estructura biaxial de propulsión eléctrica e híbrida para vehículos de pasajeros

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TODE20160322002
Publicado:
08/04/2016
Caducidad:
08/04/2017
Resumen:
Una universidad alemana de ciencias aplicadas y dos pymes de Alemania y Holanda han desarrollado conjuntamente una nueva estructura de propulsión híbrida para vehículos de pasajeros. Como aspecto innovador cabe destacar la conexión de la propulsión eléctrica, el motor de combustión y motor eléctrico de rotación, optimizada para un punto de operación determinado en términos de eficiencia energética. La universidad busca socios de la industria de automoción o electrónica de potencia con el fin de establecer acuerdos de cooperación técnica para mejorar la tecnología.


Details

Tittle:
Biaxial electric drivetrain hybrid structure for passenger cars
Summary:
A German university of applied sciences and two SMEs from Germany and the Netherlands have co-developed a new hybrid drive train structure for passenger cars. Innovations include the connection of electric powertrain, double rotating electric motor and combustion engine, optimized for a certain operating point in terms of energy efficiency. Partners from the automotive industry or the power electronics sector are sought for technological cooperation agreements to further improve the technology.
Description:
Hybrid drives are crucial when it comes to ensuring societal mobility and environmentally friendly technological solutions at the same time. However, conventional solutions entail disadvantages with regard to their efficiency. The level of efficiency and the traction torque are determined by the operating point of the combustion engine. However, this operating point is not always optimal in conventional solutions.
The German university of applied sciences and its two project partners from Germany and the Netherlands have developed a highly energy-efficient and at the same time economic hybrid-electric all-wheel drivetrain topology for passenger cars. The purpose is to enable entirely electric inner-city operation (plug-in) and non-urban long-distance operation by the use of an efficient range extender.
The combustion engine, which was designed as a point motor, is coupled to the first rotor of the double rotated machine (short DrEM). The second rotor of the DrEM is coupled via the front axis differential to the front wheels, so that the range extender is decoupled from the speed of the vehicle and works at the most efficient engine speed. This ensures an optimal operating point while shifting into the range of least specific fuel consumption, thus maximizing the overall system efficiency.
The torque adjustment is realized by two electrical machines which are located close to the rear wheels. Through the torque adjustment at the rear wheel motors, the combustion engine works at the optimum engine speed point and at the optimum torque point.
A further mode is the full electrical (and local emission-free) driving operation. For this mode the first rotor of the DrEM (which is coupled with the crank axle of the range extender) is locked. Thus, the DrEM works as a conventional electrical machine and increases the traction torque.
By the free choice of the operating point of the range extender, a significant fuel reduction is possible in comparison to conventional hybrid power trains. By downsizing the combustion engine, the replacement of the manual gearbox and the cardan shaft it is possible to reduce costs and weight. This compensates the additional costs and weight of the new rear axis drive and the DrEM.
Unlike a full electrical system, it is possible to reload the traction battery during driving. Thus the capacity of the traction battery can be designed much smaller in comparison to a full electrical drive train. This saves cost and weight, too.
SMEs, industrial partners or research institutions from the the following sectors are sought for technological cooperation agreements to further improve the technology with regard to the efficiency: automotive, power electronics, electrical drives or battery systems.
Advantages and Innovations:
- Decoupling of combustion engine and front axle differential allows for higher efficiency and lower fuel consumption
- Operating point and traction torque are optimized (Point optimized range extender) - The combustion in the optimal operating point is 228 g/kWh.
- Energy management for split hybrid structure and battery management system with integrated decentral, active cell balancing system lead to higher energy-efficiency
- 40% weight reduction of the combustion engine compared to a typical four-cylinder engine.
- The simulated efficiency is 25% higher than in a conventional vehicle. The road test results are still pending.
- In full electrical mode the range is between 25 and 30 km with the installed 5.9 kWh traction battery.


Stage of Development:
Available for demonstration
IPs:
Secret Know-how

Partner sought

Type and Role of Partner Sought:
- Type of partner sought: Industry, SME or research institutions
- Specific area of activity of the partner:
Automotive industry, power electronics, electrical drives, battery systems
- Task to be performed by the partner sought:
Further improvement of the technology with regard to the efficiency

Client

Type and Size of Client:
University
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English
German

Keywords

Technology Keywords:
02009014 Electricidad y electrónica para automoción
04002005 Generadores, motores eléctricos y conversores de potencia
02009002 Hybrid and Electric Vehicles
02009024 Powertrain and chassis
02009004 Vehículos para transporte por carretera