Range Extension via Electrothermal Recuperation
One of the decisive reasons for the slow market penetration of electric vehicles is their short driving range, especially in cold temperatures. The goal of this paper was to increase the driving range in cold temperatures. Electric vehicles recover kinetic energy by recuperation and storage in the b...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-05-01
|
| Series: | World Electric Vehicle Journal |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2032-6653/11/2/41 |
| _version_ | 1827716253441064960 |
|---|---|
| author | Matthias Steinstraeter Marcel Lewke Johannes Buberger Tobias Hentrich Markus Lienkamp |
| author_facet | Matthias Steinstraeter Marcel Lewke Johannes Buberger Tobias Hentrich Markus Lienkamp |
| author_sort | Matthias Steinstraeter |
| collection | DOAJ |
| description | One of the decisive reasons for the slow market penetration of electric vehicles is their short driving range, especially in cold temperatures. The goal of this paper was to increase the driving range in cold temperatures. Electric vehicles recover kinetic energy by recuperation and storage in the battery. However, if the battery is fully charged or cold, the option of recuperation is severely limited. Braking energy is dissipated into the environment via the mechanical brake, and the range thus decreases. Electrothermal recuperation (ETR) enables the braking power to be used in heater systems and thus saves energy in the overall system. In this paper, ETR was investigated with a highly responsive serial layer heater. An overall model consisting of the electric powertrain, the heating circuit, and the vehicle interior was developed and validated. The limitations of recuperation capability were determined from driving tests. The factors state of charge and battery temperature were varied in the conducted simulations in order to quantify the range increase through ETR. The results showed that the range could be increased via electrothermal recuperation by up to 8% at −10 °C in a real driving cycle, using a serial heater. A control strategy of the heating circuit enabled the coolant circuit to function as buffer storage. The interior temperature—and consequently user comfort—remained unchanged. |
| first_indexed | 2024-03-10T19:36:52Z |
| format | Article |
| id | doaj.art-ab29f0fc2aff45e8a010ef7a6a6c2e43 |
| institution | Directory Open Access Journal |
| issn | 2032-6653 |
| language | English |
| last_indexed | 2024-03-10T19:36:52Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | World Electric Vehicle Journal |
| spelling | doaj.art-ab29f0fc2aff45e8a010ef7a6a6c2e432023-11-20T01:37:26ZengMDPI AGWorld Electric Vehicle Journal2032-66532020-05-011124110.3390/wevj11020041Range Extension via Electrothermal RecuperationMatthias Steinstraeter0Marcel Lewke1Johannes Buberger2Tobias Hentrich3Markus Lienkamp4Institute of Automotive Technology, Technical University of Munich, Boltzmannstr. 15, 85748 Garching, GermanyInstitute of Automotive Technology, Technical University of Munich, Boltzmannstr. 15, 85748 Garching, GermanyInstitute of Automotive Technology, Technical University of Munich, Boltzmannstr. 15, 85748 Garching, GermanyWebasto Thermo & Comfort SE, Friedrichshafener Strasse 9, 82205 Gilching, GermanyInstitute of Automotive Technology, Technical University of Munich, Boltzmannstr. 15, 85748 Garching, GermanyOne of the decisive reasons for the slow market penetration of electric vehicles is their short driving range, especially in cold temperatures. The goal of this paper was to increase the driving range in cold temperatures. Electric vehicles recover kinetic energy by recuperation and storage in the battery. However, if the battery is fully charged or cold, the option of recuperation is severely limited. Braking energy is dissipated into the environment via the mechanical brake, and the range thus decreases. Electrothermal recuperation (ETR) enables the braking power to be used in heater systems and thus saves energy in the overall system. In this paper, ETR was investigated with a highly responsive serial layer heater. An overall model consisting of the electric powertrain, the heating circuit, and the vehicle interior was developed and validated. The limitations of recuperation capability were determined from driving tests. The factors state of charge and battery temperature were varied in the conducted simulations in order to quantify the range increase through ETR. The results showed that the range could be increased via electrothermal recuperation by up to 8% at −10 °C in a real driving cycle, using a serial heater. A control strategy of the heating circuit enabled the coolant circuit to function as buffer storage. The interior temperature—and consequently user comfort—remained unchanged.https://www.mdpi.com/2032-6653/11/2/41electrothermal recuperationbattery charging performanceelectric vehicle heaterreal driving cyclesrange increasepassenger comfort |
| spellingShingle | Matthias Steinstraeter Marcel Lewke Johannes Buberger Tobias Hentrich Markus Lienkamp Range Extension via Electrothermal Recuperation World Electric Vehicle Journal electrothermal recuperation battery charging performance electric vehicle heater real driving cycles range increase passenger comfort |
| title | Range Extension via Electrothermal Recuperation |
| title_full | Range Extension via Electrothermal Recuperation |
| title_fullStr | Range Extension via Electrothermal Recuperation |
| title_full_unstemmed | Range Extension via Electrothermal Recuperation |
| title_short | Range Extension via Electrothermal Recuperation |
| title_sort | range extension via electrothermal recuperation |
| topic | electrothermal recuperation battery charging performance electric vehicle heater real driving cycles range increase passenger comfort |
| url | https://www.mdpi.com/2032-6653/11/2/41 |
| work_keys_str_mv | AT matthiassteinstraeter rangeextensionviaelectrothermalrecuperation AT marcellewke rangeextensionviaelectrothermalrecuperation AT johannesbuberger rangeextensionviaelectrothermalrecuperation AT tobiashentrich rangeextensionviaelectrothermalrecuperation AT markuslienkamp rangeextensionviaelectrothermalrecuperation |