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48-V Systems: What You Need to Know as
Automakers Say Goodbye to 12 V, 21 July 2023, Today, 48-V power systems are already helping improve the efficiency and performance of ICE and mild hybrid vehicles, but they will become an essential technology for tomorrow's EVs, Lee Goldberg, Related To:
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A European automotive trade association, CLEPA, estimated in 2018 that as many as 1 of every 10 new vehicles in 2025 would use at least one 48 volt device in the vehicle, covering 15 million vehicles per year.
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In
December 2023, in order to accelerate the adoption by other automakers of 48 V system voltage for automotive components, Tesla offered a "48-volt electrical system whitepaper" to all industry leaders. CEO
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12-volt systems can provide only 3.5 kilowatts, while a 48 V power could achieve 15 to 20 kW or even 50 kW. 48 volts is below the level that is considered safe without special protective measures.
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failed to catch on and was abandoned by 2009. During the 2010s, renewed interest arose for a 48-volt low-voltage standard for powering automotive electronics, especially in
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to generate power for a 48V AC compressor, without the need for a belt. This allows the engine to rev more freely and give the vehicle good AC, no matter the RPM.
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vehicle would utilize a 48-volt mid-voltage subsystem as a replacement of 12V system, migrating the low-voltage components with highest power demand to 48V.
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Traditionally, vehicle low voltage applications were powered by a 12-volt system. In the 1990s, an attempt by a cross-industry standards group to specify a
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https://www.electronicdesign.com/markets/automotive/article/21269271/electronic-design-48v-systems-what-you-need-to-know-as-automakers-say-goodbye-to-12-v
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that is increasingly used in vehicles. It began in the 2010s as a way to increase the propulsion and battery recharge during braking for fuel savings in
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used a 48V subsystem in 2018 vehicles such as A6, A7, A8 with 3.0 TDI 48V mild-hybrid, CLS, E-Class, S-Class with M256 3.0 Turbo Otto 48V Mild-Hybrid.
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confirmed that Ford had received a copy and agreed to 'help the supply base move into the 48-volt future". Tesla also adopted 48 volts for its
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followed in model year 2019 with 1.6 and 2.0 turbodiesel engines supported by 48V mild-hybrid technology.
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systems that require a lot of power to run, and might be more responsive and capable with a 48 V system.
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https://www.designnews.com/electronics/texas-instruments-bullish-on-48-volt-automotive-systems
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ISO 21780:2020(en) Road vehicles — Supply voltage of 48 V — Electrical requirements and tests
413:"5 Tesla Cybertruck Features That Didn't Make It Into Production and Five No One Saw Coming"
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Dusan
Graovac, Christoph Schulz-Linkholt, Thomas Blasius, 23 April 2020, EE Times/Asia.
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383:"What we learned from the Tesla Cybertruck delivery event about price, range and more"
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241:"Everything You Need To Know About The Upcoming 48-Volt Electrical Revolution In Cars"
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agreed on a 48V system supplementing the legacy 12V low-voltage automotive standard.
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Texas
Instruments Bullish on 48-Volt Automotive Systems, Dan Carney, March 31, 2021
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464:"The Gordon Murray Automotive T.50 Is the 654-HP, 2174-Pound Successor to the F1"
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Why Cars Are Moving to 48-Volt
Electrical Systems, Bill Howard April 26, 2017
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https://www.extremetech.com/cars/247889-cars-moving-48-volt-electrical-systems
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As of 2018, a 48V electrical subsystem operated production vehicles such as
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48V Vehicle
Electrical System – More Than Just a Bridging Technology?
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https://clepa.eu/wp-content/uploads/2018/01/CLEPA-48v-technology.pdf
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321:"German carmakers agree on 48V on-board supply, charging plug"
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48 VOLT: A proven technology to reduce CO2 and NOx emission,
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One example of where these benefits can be used is in the
340:"To Power the Future, Carmakers Flip on 48-Volt Systems"
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220:List of electric vehicle battery manufacturers
161:A 48V system can provide more power, improve
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319:Hammerschmidt, Christoph (June 16, 2011).
489:"What Is a 48-Volt Mild-Hybrid System?"
262:"Whatever Happened to the 42-Volt Car?"
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338:Mayersohn, Norman (February 8, 2018).
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381:Schulz, Bailey (November 30, 2023).
81:dCi Hybrid Assist was the first 48V
23:voltage is a relatively low-voltage
183:Another example is with the use of
54:In 2011, German car manufacturers
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300:Vollmer, Alfred (June 14, 2011).
239:Tracy, David (January 13, 2017).
16:DC electrical system used in cars
302:"Deutsche OEMs setzen Standards"
260:Allen, Mike (1 October 2009).
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174:Gordan Murray Automotive T.50
178:Integrated Starter Generator
21:48-volt DC electrical system
533:Electric power distribution
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493:Capital One Auto Navigator
29:internal combustion engine
45:42-volt electrical system
77:In model year 2017, the
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185:electric turbochargers
31:vehicles, especially
538:Automotive electrics
193:rear wheel steering
176:, where it uses an
163:energy recuperation
438:Electronic Design
419:. 10 December 2023
345:The New York Times
205:Automotive battery
133:revealed that the
325:eeNews Automotive
267:Popular Mechanics
210:Extra-low voltage
189:active suspension
25:electrical system
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423:18 December
394:December 7,
273:15 December
83:mild-hybrid
33:mild hybrid
527:Categories
498:2024-08-09
474:2024-08-09
226:References
147:Jim Farley
131:Tesla Inc.
72:Volkswagen
35:vehicles.
215:Load dump
246:Jalopnik
199:See also
157:Benefits
116:Kia Ceed
368:, 2018
94:Bentley
90:Porsche
68:Porsche
39:History
191:, and
96:SUVs.
70:, and
366:CLEPA
425:2023
396:2023
275:2023
137:and
118:and
100:and
98:Audi
92:and
56:Audi
60:BMW
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