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Innovative approach to electric vehicle diagnostics

Małek Arkadiusz, Taccani Rodolfo

Archiwum Motoryzacji

2021

Vol. 92, nr 2

49--67

Electromobility is associated with the ever faster development and introduction of new electric vehicles to the market. They use an electric motor to drive the wheels of the vehicle and the necessary electricity is stored in traction batteries. Electric vehicles have a different construction than traditional vehicles i.e. those powered by internal combustion engines. For this reason, the manner of use, maintenance and service are different. Familiarization with selected operational issues of electric vehicles positively affects the reliability of their use as well as safety and comfort of driving. An important component of electric vehicles is the traction battery. Its proper operation influences the long-term preservation of the initial energy capacity and, thus, the range of the vehicle. The article presents tests of the state of traction batteries of a small electrically powered city vehicle. The vehicle, the batteries and the diagnostic devices used to assess the condition of the battery are described in detail. Based on the literature analysis and the observation of market trends, a fast and effective method of assessment of the technical condition of batteries in electric vehicles is proposed. The method has been tested on the selected vehicle. The technical condition of the battery in the vehicle was assessed after 4.5 years of operation and 30,000 km mileage.

Long-term test of an electric vehicle charged from a photovoltaic carport

Małek Arkadiusz, Taccani Rodolfo

Archiwum Motoryzacji

2019

Vol. 86, nr 4

55--63

The article includes experimental investigations of electricity consumption over a distance of 30,000 km by a small city electric vehicle. During that time period, the vehicle was charged in most cases from a photovoltaic carport with a peak power of 3 kWp. The analyses include vehicle mileage and the number of times the battery has been charged during 5 years of operation. In addition, the amount of energy generated by the photovoltaic carport was also measured. During the entire research period, the small electric vehicle was charged with State of Charge (SoC) 50% almost 900 times. Then, an analysis was performed to determine the adequacy of the carport peak power selection for the energy needs of the electric vehicle. Based on an analysis of the amount of electricity produced by the carport during the season of use of the electric vehicle, it may be concluded that the average production of electricity in the selected period is about 2 times higher than that required to fully charge the electric vehicle (100% of SoC). Therefore, when designing the carport, the power required to charge the electric vehicle was correctly forecast.