9 Oct
2019
Combustion free electric vehicles (EVs) have been developing with advanced transmission technologies. The benefits of this new technological addition to the world of electric vehicles are attracting the drivers. Most of the EVs have a single-speed transmission, unlike those combustion engine cars with the multi-speed transmission. This is because electric motors have a much larger range of revolution per minute (RPM) as compared to combustion engines with full torque at zero rpm. Moreover, the engineers may use a multi-speed transmission for benefitting the performance in EVs, as it can offer several advantages such as:
Additionally, with varied alterations in EVs, the EV transmission market is developing. According to a report published by Allied Market Research, the electric vehicle (EV) transmission market is estimated to reach $15.38 billion at a CAGR of 25.8% by 2026. Likewise, various companies have stepped up to provide EVs a better status with the multispeed transmission. Ricardo is developing an electric drive unit (EDU) to control transmissions, inverter, and motor for improving the performance of EV. On the other hand, Tata introduces another technology Ziptron to enhance power trains for EVs. The following is the in-detailed presentation:
Ricardo develops a scalable EDU to control transmission, motor, and inverter:
To provide the better power and torque density along with system efficiency, better vibration, harshness, and noise performance, Ricardo, a British automotive company took efforts to develop an EDU. According to the company, the multispeed transmission is more beneficial than single-speed transmission in terms of system cost, energy efficiency, compressed electric motor with reduced weight and small battery size. Furthermore, the single EDU will be used to control the transmission, motor, and inverter.
The electric motor has active oil jets on the end windings which doesn’t require a back-iron cooling. On the other hand, the inverter is oil-cooled with direct jet cooling. Moreover, the transmission is innovated with dual-clutch to enable fewer frictional losses and lesser bearings.
Tata introduces Ziptron technology to improve powertrain:
Another technology that has been developed by Tata Motors, an Indian multinational locomotive company is offers a consistent power train including engine, transmission, axles, and the driveshaft for EVs. The company claims to offer eight years of battery and motor warranty. This can be a transforming feature as batteries in fuel or lead acid-based vehicles don’t have more than four years of warranty.
Furthermore, all the electronic vehicles by the company will be powered by Ziptron. The president of the company claims Ziptron powertrain to be tested across 1 million kilometers. The full-charged battery lasts up to 200kms and it is certified to be water and dustproof.
After various transmissions, the engineers are modifying EVs with multispeed transmissions. Moreover, the multispeed transmission has proved to be beneficial in several terms such as speed, acceleration, and performance efficiency. However, with major companies stepping ahead towards the latest EV transmission technologies, there will soon be an increase in the adoption of EVs as well. On the other hand, the technological advancements in transmission and efficient EVs will provide lucrative growth to the EV transmission market.
Reference :
Rosy Behera
Author's Bio- Rosy Behera holds a bachelors degree in Electrical and Electronics Engineering and now she is a content writer by profession. She loves to portray her thoughts and ideas with a nice command of words. Grabbing an audience with her creative write-ups is one of her biggest assets so far. Apart from writing, she is a certified Odisi dancer and has done Gardharva in Drawing, Painting, and Arts. She always explores new things through travel and is a big foodie.
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