Solutions for the Thermal Management of Electrically Driven Vehicles

Suck, Gerrit; Spengler, Carsten

doi:10.1007/s38311-014-0198-8

Cited by 3 publications

(3 citation statements)

References 1 publication

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“…An alternative to recycling could be extracting heat by chilling the cabin exhaust heat, then using that energy in the heat pump. This has been shown by BMW, who have demonstrated a 35% recovery in the heat from air exhausted from the cabin [39].…”

Section: Potential Solutionsmentioning

confidence: 53%

Complex Heat Pump Operational Mode Identification and Comparison for Use in Electric Vehicles

et al. 2018

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Abstract:Previous research has focused on the use of heat pumps in electric vehicles, with the focus on recuperating heat from, normally, ambient and one thermal source on the vehicle. Here 5 potential thermal sources on a vehicle have been identified and thorough testing on the benefit of each source has been performed. The results presented suggest the motor, a thermal storage device, and cabin exhaust extraction should be used >80% of the time according to the scenarios tested, while battery heating and transmission heat extraction should be used subject to conditions on the ambient temperature and drive cycle.

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Section: Potential Solutionsmentioning

confidence: 53%

Complex Heat Pump Operational Mode Identification and Comparison for Use in Electric Vehicles

et al. 2018

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“…The smaller air volume is used to harvest cabin exhaust waste heat, Here, 30% of the potential heat contained in the wasted air can be extracted and used in the heat pump. This amount reflects the claims made by BMW in Reference [41].…”

Section: Cabinmentioning

confidence: 53%

Optimisation of Direct Battery Thermal Management for EVs Operating in Low-Temperature Climates

et al. 2020

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Electric vehicles (EVs) experience a range reduction at low temperatures caused by the impact of cabin heating and a reduction in lithium ion performance. Heat pump equipped vehicles have been shown to reduce heating ventilation and air conditioning (HVAC) consumption and improve low ambient temperature range. Heating the electric battery, to improve its low temperature performance, leads to a reduction in heat availability for the cabin. In this paper, dynamic programming is used to find the optimal battery heating trajectory which can optimise the vehicle’s control for either cabin comfort or battery performance and, therefore, range. Using the strategy proposed in this research, a 6.2% increase in range compared to no battery heating and 5.5% increase in thermal comfort compared to full battery heating was achieved at an ambient temperature at −7 °C.

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“…The smaller air volume is used to harvest cabin exhaust waste heat, here up to 30% of the heat can be extracted and used in the heat pump. This amount reflects the claims made by BMW in (Suck and Spengler, 2014).…”

Section: Cabinmentioning

confidence: 61%

System level heat pump model for investigations into thermal management of electric vehicles at low temperatures.

Jeffs

McGordon

Picarelli

et al. 2019

Linköping Electronic Conference Proceedings

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One of the challenges concerning electric vehicles is their performance in cold climates. As the temperature drops below 10 • C battery capacity begins to reduce and heating demand starts to claim a larger proportion of total vehicle energy expenditure. Although efficient, electric vehicles waste heat through a few components, resulting in opportunity to harvest waste heat through a heat pump. With multiple options for harvesting heat and the option to heat the battery, a model and architecture has been developed to give flexibility in a wide range of thermal management scenarios. This paper explores the details of the model and presents two example cases of interest to demonstrate the model's applicability.

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Solutions for the Thermal Management of Electrically Driven Vehicles

Cited by 3 publications

References 1 publication

Complex Heat Pump Operational Mode Identification and Comparison for Use in Electric Vehicles

Complex Heat Pump Operational Mode Identification and Comparison for Use in Electric Vehicles

Optimisation of Direct Battery Thermal Management for EVs Operating in Low-Temperature Climates

System level heat pump model for investigations into thermal management of electric vehicles at low temperatures.

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