German automotive technology giant Continental has developed a new sensor technology that is said to significantly enhance the efficiency and sustainability of electric vehicle (EV) motors.

For the first time, their new e-Motor Rotor Temperature Sensor (eRTS) directly measures the temperature inside permanently excited synchronous motors on the rotor itself.

This innovative approach delivers substantially more precise measurement results than current software-based temperature simulations, drastically reducing the tolerance range from 15deg Celsius to a mere 3deg Celsius. The enhanced accuracy offers a dual benefit for vehicle manufacturers: it enables them to reduce the reliance on costly rare earth elements used to boost magnet heat resistance and simultaneously improve potential motor performance. This, in turn, paves the way for greater sustainability in EV production.

The eRTS is a key development from Continental's E-Mobility Sensors (EMS) product centre, which is dedicated to creating advanced sensor technologies for electric vehicles.

Bin Huo, Head of Passive Safety and Sensorics (PSS) segment, Continental, said, "With less resource consumption and lower costs, eRTS sensor technology is advantageous over current solutions. This innovation shows that investing resources and focusing expertise in our product centre was absolutely the right decision. We will continue to successively expand our EV sensor portfolio."

Higher Measuring Accuracy

The eRTS system comprises two distinct components: a wireless mote temperature sensor unit positioned close to the magnet within the EV motor and a wired transducer element situated outside the motor, connected to the inverter control.

Rotors operate under extreme conditions, with temperatures potentially reaching up to 150deg Celsius. Consequently, precise monitoring and control of heat development in EV motors are paramount. Presently, heat development is not measured directly but is instead calculated based on data from the stator temperature sensor, phase current measurements and environmental variables. This indirect method results in a tolerance range of up to 15deg Celsius. To safeguard magnets from demagnetisation due to excessive heat, expensive rare earth elements are typically used to cover this entire tolerance range and ensure sufficient heat resistance.

The significantly greater measuring accuracy of the eRTS, which reduces the tolerance range to just 3deg Celsius, presents car manufacturers with new design possibilities and freedom in permanent magnet synchronous EV motors.

A considerable proportion of costly rare earth materials, which would otherwise be required to account for the wider tolerance range for safety reasons, can now be saved. Furthermore, the improved accuracy offers the intriguing prospect of enhancing motor performance by pushing the operational limits closer to the actual temperature threshold.

Christoph Busch, Lead – Product Centre, Continental, said, "Our E-Mobility Sensors product centre aims to increase efficiency and sustainability in electric vehicles. The eRTS technology is a prime example of this: reducing the use of rare earths contributes to a more sustainable supply chain, especially given that the number of EVs is expected to greatly increase in the coming years and decades. In combination with other sensor technologies, such as the e-Motor Rotor Position Sensor, it can even act as a system solution to create synergies that can save car manufacturers money and effort."

Ultrasound Technology

The eRTS's two components, the mote element and the transducer element, work in tandem. The mote temperature sensor unit measures the temperature directly at the target area, as close as possible to the magnet. Crucially, the wireless mote draws its energy solely from the wired transducer, which is connected to the Electronic Control Unit (ECU) and simultaneously provides the transducer with its measuring data. The transducer is located outside the EV motor on the chassis and transmits temperature information to the inverter control via a communication interface. Both the mote and transducer communicate using Piezo ultrasound, which also facilitates the energy supply to the mote.

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Bengaluru-based deep-tech battery start-up Flowatt Battery Science has raised INR 22 million in its pre-seed funding round led by accelerator PedalStart.

The capital will be directed towards technology optimisation, completing the proof-of-concept (POC) for its electric battery and building alliances with insurers, EV financiers, OEMs and other stakeholders.

Flowatt focuses on powering commercial mobility fleets for e-commerce and quick-commerce segments. It uses a Battery-as-a-Service (BaaS) pay-per-use model for electric two-wheelers and three-wheelers, which aims to lower battery purchase costs for fleet operators. The service uses IoT-enabled tracking and data analytics to optimise battery performance and cost-efficiency.

The company has scaled its BaaS model to nearly 1,500 batteries across multiple Indian cities. Following the funding, Flowatt plans to deploy over 20,000 batteries under its BaaS offering, achieve over INR 25 million monthly recurring revenue (MRR), and expand to more than 15 cities across tier 1 and tier 2 India by the end-FY2027.

Siddhartha Srivastava, Bikesh Jha and Vikash Singh, Co-Founders of Flowatt Battery Science, said: “We are thrilled to announce our pre-seed round led by PedalStart, a significant milestone set to propel Flowatt’s journey ahead. In the near term, the funds raised shall be instrumental in enabling us to optimise and scale our new battery-as-a-service solution that offers a three-fold edge- minimal cost, longest battery life and assured buyback guarantee. As the electric mobility scene in India soars, managing EV batteries efficiently throughout their lifecycle has emerged as an imperative. At Flowatt, we’re doing this by combining cutting-edge battery science with data science and aiming to bridge the gaps between advanced energy storage technologies and long-term value creation for the ecosystem. Our unique BaaS model and tech ensure that India’s EV owners and fleet operators can make efficient data-driven decisions, while minimising costs and negative environmental impact. In the long run, we aspire to make EV adoption more affordable, accessible, profitable and sustainable.”

Manas Pal and Aditya Darolia, Co-Founders, PedalStart, said,: “As India accelerates towards large-scale electrification, Flowatt is solving one of the most pressing challenges in the nation’s EV ecosystem today- the economics of battery adoption. By shifting batteries from being a capital-heavy purchase to a flexible service offering, they are removing the biggest pain points with commercial EV adoption. Plus, their focus on battery assurance, lifecycle management and second-life applications makes them one of the most exciting deep-tech players today. We were impressed by the founding team’s domain experience and expertise, dedication to execution and vision, and are extremely happy to be a part of their growth story as Flowatt’s early believer, investor and backer.”

Flowatt offers real-time health monitoring and lifecycle underwriting through its in-house technology, which is designed to promote a circular energy economy by extending battery life and enabling second-life applications.

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Pune-headquartered software-defined vehicle development company KPIT Technologies has acquired a majority stake in N-Dream AG, the Swiss company behind the AirConsole platform. KPIT, which previously held a 26 percent share, will increase its ownership to nearly 90 percent.

N-Dream's AirConsole platform provides in-car gaming and is used by manufacturers including BMW, MINI, Volkswagen, Audi and Porsche. The acquisition strengthens KPIT’s position in the software-defined vehicle market and accelerates N-Dream’s mission to develop in-car digital experiences.

Andrin von Rechenberg, Founder, N-Dream, said, “What began as a bold idea in Switzerland has grown into a platform used by leading carmakers around the world. With KPIT’s partnership, our innovation culture and creative roots remain at the core of everything we do, while giving us the reach and resources to shape the future of in-car experiences.”

Anthony Cliquot, CEO, N-Dream AG, said, “By joining forces with KPIT, we can accelerate our mission to bring fantastic experiences to cars and their users. With KPIT’s scale and reach, we’re ready to take what we’ve built to a truly global audience.”

The AirConsole platform allows passengers to use their smartphones as controllers to play games on the car’s infotainment screen. N-Dream plans to expand its vision beyond gaming to develop a new generation of in-cabin software focused on interactivity, personalisation, and connected services.

Kishor Patil, CEO, KPIT Technologies, said, “N-Dream’s creativity and technology perfectly complement KPIT’s roadmap for next-generation mobility. Together, we will help define the next era of software-defined vehicles, where immersive, connected and personalised experiences are an integral part of driving.”

Following up to the move, N-Dream will remain an independent entity within the KPIT Group. Anthony Cliquot and Andrin von Rechenberg will continue to lead the company as CEO and Chief of Innovation, respectively.

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Polestar has launched Polestar Fleet Telematics, an advanced connected service designed to revolutionize the management of electric vehicle fleets. This powerful system delivers a continuous stream of real-time data and actionable insights, enabling operators to significantly boost efficiency and lower costs through smarter, predictive planning.

Seamlessly integrating with established fleet management platforms, it requires no additional hardware, simplifying adoption. Created in collaboration with partners Echoes, Geotab and High Mobility, the service also fosters an enhanced customer experience via a fully connected ecosystem. With its scalable architecture for global markets, the solution is available across the entire Polestar range, providing a uniform and sophisticated tool for international fleet operators.

Ramon Lingen, Head of Global Fleet and Pre-owned, said, “Given our extensive fleet customer base, this marks a major milestone for Polestar and a big step forward for our customers. Polestar Fleet Telematics combines sustainability with intelligence – empowering operators to make smarter, data-driven decisions that benefit both their business and the planet.”

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Adient, a global leader in car seating and Autoliv, a global supplier of car safety systems, have co-developed safety solutions to enhance occupant protection in deeply reclined or ‘zero-gravity’ seating positions. The solution, which is ready for mass production, combines Adient’s new seating concept ‘Z-Guard’ with Autoliv’s safety technology.

The partners stated that zero-gravity seating is seeing an increasing demand in mid-end to high-end vehicles. However, the reclined posture can reduce the effectiveness of safety systems designed for standard upright seating.

Adient’s Z-Guard is based on the principle of Multi-Dimensional Collaborative Protection and integrates constraint and energy-absorbing technologies into a dynamic safety system. Key innovations include:

• Active Cushion Collapse Mechanism: This feature rapidly collapses the seat frame in a crash to absorb energy and adjust posture, reducing spinal impact.
• Adjustable Seat Belt Outlet: This feature adapts to passenger posture and body type, enhancing restraint and minimising risks like shoulder slippage.

Autoliv’s technology complements this with an Integrated Seatbelt System, Dynamic Lumbar Retractor, Pelvic Cushion Airbag and Head Side Airbag. These systems work to protect the head, neck, chest and pelvis.

The Z-Guard concept also allows integration with vehicle driver assistance systems. Using predictive signals, it employs motor-driven seat repositioning to adjust the occupant’s posture before a collision to reduce injury risk. If a crash cannot be detected in time, Z-Guard provides protection through dual pretensioners, cushion buffering and a collapse mechanism to prevent forward movement.

Adient is leading the commercialisation of the Z-Guard, which is scheduled for production in a high-volume model from a major global OEM.

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