Power Up with 800-V Systems: The benefits of upgrading voltage power for battery-electric passenger vehicles
Abstract
In a battery-electric vehicle, the powertrain and different auxiliary components are powered by a high-voltage (HV) battery. Most of today's battery-electric vehicles use battery configurations, resulting in the 150-450-Vdc link voltage range, and this highvoltage configuration is often called the 400-V system. In contrast, in electrified truck and construction vehicles, the maximum dc link voltage can reach 870 V, and this configuration is often called the 800-V system. Currently, there are several high-end electric passenger vehicles under development utilizing the 800-V system. This article discusses the benefits and challenges of using the 800-V system in passenger vehicles. For example, the availability of the automotive qualified components for the 800-V system is limited. Therefore, automotive original-equipment manufacturers must assume additional development effort, time, and cost impact when applying the 800-V system to passenger vehicles.
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Higher voltage cables usually show more flexibility for routing due to reduction of the wiring harness cross-section by more than three times.
“Moreover, due to reduction of the wiring harness cross-section by more than three times, higher voltage cables usually show more flexibility for routing which facilitates packaging and manufacturing [29], [30].”
From A Review of Multilevel Inverter Topologies in Electric Vehicles: Current Status and Future Trends (2021) · cites this paper as [29]
Utilizing higher voltage batteries doesn't affect the total number of cells in a battery pack, but the configuration of series and parallel cells changes.
“Utilizing higher voltage batteries doesn't affect the total number of cells in a battery pack. However, the configuration of series and parallel cells changes [29].”
From A Review of Multilevel Inverter Topologies in Electric Vehicles: Current Status and Future Trends (2021) · cites this paper as [29]
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“However, the configuration of series and parallel cells changes [29].”
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- Authors
- Jung, C.
- Corresponding author
- Jung, Christian
- ORCID
- Jung, Christian
- Venue
- IEEE Electrification Magazine
- Published
- 2017-03
- Volume
- 5
- Issue
- 1
- Pages
- 53-58
- ISSN
- 2325-5889 (ISSN-L)
- 2325-5897
- OpenAlex
- W2594685300
- Cited by
- 312
- References
- 0
- Citations by year
- 2026: 30 · 2025: 39 · 2024: 50 · 2023: 65 · 2022: 45 · 2021: 37 · 2020: 22 · 2019: 15 · 2018: 7 · 2017: 2
- FWCI
- 7.99
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- IEEE Electrification Magazine (publishedVersion)
- Topics
- Physical Sciences › Engineering › Automotive Engineering › Electric and Hybrid Vehicle Technologies
- Physical Sciences › Engineering › Automotive Engineering › Advanced Battery Technologies Research
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Electric Vehicles and Infrastructure
- Keywords
- high-voltage batteries, DC bus voltage, drivetrain, auxiliary components
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