Renault had 62 patents in batteries during Q1 2024. Renault SA filed patents in Q1 2024 for methods and devices related to discharging electrical circuits in vehicles, controlling cell balancing in battery systems, designing electrical power supplies for hybrid vehicles, extinguishing fires in electric storage devices, and creating electrochemical pouch cells for energy storage in vehicles. These innovations focus on improving safety, efficiency, and performance in electric and hybrid vehicles. GlobalData’s report on Renault gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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Renault grant share with batteries as a theme is 45% in Q1 2024. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Method for discharging a fuel-cell stack for supplying power to a traction electric machine of a motor vehicle (Patent ID: US20240092177A1)
The patent filed by Renault SA describes a method for discharging the electrical circuit of a vehicle equipped with a high-voltage battery and a hydrogen-fuel-cell stack. The method involves stopping the vehicle, disconnecting the battery, interrupting hydrogen supply to the stack, and discharging energy into the stator winding of the electric traction machine by controlling the voltage converter. The process includes discharging residual hydrogen from the fuel cell and energy from capacitors in the consumption network, ensuring safe discharge of the electrical circuit.
Furthermore, the method includes specific steps for controlled discharging in both voluntary and emergency stopping scenarios. In the case of voluntary stopping, the process involves consuming residual hydrogen, disconnecting the range extender system, and discharging energy from capacitors into the stator. In an emergency stop, simultaneous disconnection of the range extender system and battery occurs, followed by discharging energy from capacitors and residual hydrogen. The method ensures efficient and safe discharge of the electrical circuit, with controlled processes for reaching low voltage levels in the hydrogen fuel cell through self-discharging cycles of filtering capacitors.
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