Next Article in Journal / Special Issue
Newly Developed Motor Cooling Method Using Refrigerant
Previous Article in Journal / Special Issue
Ride Blending Control for Electric Vehicles
Open AccessArticle

Stand-Alone Battery Thermal Management for Fast Charging of Electric Two Wheelers—Integrated Busbar Cooling

German Aerospace Center, Institute of Vehicle Concepts, 70569 Stuttgart, Germany
*
Author to whom correspondence should be addressed.
This paper is an extended version of a paper presented at the 31st International Electric Vehicle Symposium & Exhibition and International Electric Vehicle Technology Conference 2018 (EVS 31 & EVTeC 2018), Kobe, Japan, 1–3 October 2018.
World Electr. Veh. J. 2019, 10(2), 37; https://doi.org/10.3390/wevj10020037
Received: 18 April 2019 / Revised: 29 May 2019 / Accepted: 30 May 2019 / Published: 4 June 2019
This paper presents a thermal interface for cylindrical cells using busbar-integrated cooling channels. This interface is available due to the use of a stand-alone refrigerant circuit for the thermal management of the battery. A stand-alone refrigerant circuit offers performance and efficiency increases compared to state-of-the-art battery thermal management systems. This can be achieved by increasing the evaporation temperature to the requirements of the Li-ion cells and the use of alternative refrigerants. The solution proposed in this paper is defined for electric two-wheelers, as the thermal management of these vehicles is currently insufficient for fast charging where high heat losses occur. Three channel patterns for the integrated busbar cooling were examined regarding their thermal performance to cool the li-ion cells of a 16p14s battery pack during fast charging. A method of coupling correlation-based heat transfer and pressure drop with thermal finite element method (FEM) simulations was developed. The symmetric channel pattern offers a good compromise between battery temperatures and homogeneity, as well as the best volumetric and gravimetric energy densities on system level. Average cell temperatures of 22 °C with a maximum temperature spread of 8 K were achieved. View Full-Text
Keywords: two-wheeler; thermal management; battery; busbar; thermal interface; Li-ion; fast charging two-wheeler; thermal management; battery; busbar; thermal interface; Li-ion; fast charging
Show Figures

Figure 1

MDPI and ACS Style

Mayer, B.; Schier, M.; Friedrich, H.E. Stand-Alone Battery Thermal Management for Fast Charging of Electric Two Wheelers—Integrated Busbar Cooling. World Electr. Veh. J. 2019, 10, 37.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop