A description of the JOSPEL project


The aim of the JOSPEL project is the development of a novel energy efficient climate system for the optimization of interior temperature control management in electrical vehicles.

The JOSPEL project consists of 14 project partners from 9 EU countries.

The project runs from May 2015 – October 2018.

The project has received funding from the European Union‘s Horizon 2020 research and
innovation programme under Grant Agreement n° 653851.

Background - the industry challenge

Research shows that many people will not consider buying an electric vehicle (EV) unless the operating range increases dramatically compared to the majority of the available car models on the market.

The main ways to increase the operating range of an electric car are: to increase the engine efficiency, to improve the battery efficiency, to reduce the mass of the car and/or, to improve the energy use in the car.

The partners in the JOSPEL project will engage the energy consumption challenge by focusing on improving  the  energy  consumption  of  the  vehicle  and  battery  efficiency;  to  get  more  available energy for mobility and consume less energy from the grid.

Purpose - the JOSPEL solution

EV motors and batteries do not create heat in the same way as internal combustion engines and do therefore require specific thermal management solutions. Current HVAC (heating, ventilation, and air conditioning) technologies reduce the EVs potential operating range with up to 25%.

The aim of JOSPEL project is the development of a novel energy efficient climate system for the optimization of interior temperature control management in electrical vehicles through an integrated approach that combines the application of the thermoelectric Joule and Peltier effect, the development of an efficient insulation of the vehicle interior, the energy recovery from heat zones, battery life increase duration enhancement as a side effect of thermal management, battery consumption reduction by Peltier cooling integration, innovative automated and eco-driving strategies and the electronic control of power flows. Main objective is the reduction of at least 50% of energy used for passenger comfort (<1,250 W) and at least 30% for component cooling in extreme conditions with reference to electric vehicles currently on the market.

Main activities

The activities in and the more concrete objectives of the JOSPEL project are many. The Joules and Peltier effects (which comprises the JOS-PEL name) are two of the pillars of the technologies that will be developed in the project.

Joules and Peltier effects

Joule heating is the process by which the passage of an electric current through a conductor releases heat. The Joule effect, due to its radiating heating nature ca. 3°C lower temperature is required compared to conventional interior heating applications to achieve the same feeling of warmth. 1°C represents about 6% energy saving. This allows the realization of directly heated form heaters and the elimination of heating ovens, where a substantial amount of energy is wasted caused by hot air being exhausted to the surrounding ambient.


In  the  Peltier  cells  technology when  an  electric  current  flows  through  a  circuit  made  from  two different metals, heat is given off at the upper junction and absorbed at the lower. Cooling  systems  using  Peltier  cells  could  provide  significant  advantages  compared  with  current  systems  for improved fuel economy, reduced toxic and greenhouse gas emissions, due to these units can be devised to only cool the person, not the whole cabin. They are also lighter, cheaper and efficient that heat pump inverter systems.

A variety of innovative solutions

The advantages of the Peltier and Joule effect will be complemented by a significant number of other innovative solutions  to  reduce  the  energy  consumption  in  other  elements  of  the  car:

  • Development of a novel and innovative heating system based on the use of Joule effect
  • Development of a novel and innovative cooling system based on the use of Peltier cells
  • To improve insulation properties of PMMA sheet
  • To reduce energy needed for defrosting
  • To reduce EV consumption by optimizing cabin insulation
  • Design and integration of innovative battery pack with low energy consumption and thermal management elements
  • Development of model based control strategies for the operation of the battery pack including the cooling system
  • Reduction of EV electric consumption by full vehicle integration of communication devices and networks
  • Implementation of automated systems to improve energy saving
  • Cost reduction in the proposed heating/cooling systems compared to current systems
  • Weight reduction of the cars equipped with the technology involved
  • Optimizing functionalities and devices interconnection in a distributed cloud-based environment
  • Analyzing and applying the above mentioned concept to complex entities
  • Building a full monitorized “demo lab” with real users for the validation of the user cooler/heating feeling