Great Wall Motor has patented an energy recovery control method for vehicles. The system adjusts energy recovery torque based on battery power levels, optimizing efficiency. By reducing torque strength when needed, the method ensures effective energy recovery and battery charging during operation. GlobalData’s report on Great Wall Motor gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Great Wall Motor, was a key innovation area identified from patents. Great Wall Motor's grant share as of February 2024 was 74%. Grant share is based on the ratio of number of grants to total number of patents.

Energy recovery control method for vehicles

Source: United States Patent and Trademark Office (USPTO). Credit: Great Wall Motor Co Ltd

A recently granted patent (Publication Number: US11923719B2) discloses an energy recovery controlling method for vehicles equipped with a driving electric motor and a battery. The method involves determining a target recovery power upper-limit value based on an energy-recovery torque curve pre-configured in the vehicle. If the available charging power is lower than the target value, an inflection-point vehicle speed is identified, and a reduction proportion of the energy-recovery torque curve is determined based on various factors such as energy-recovery signal, current vehicle speed, and available charging power. Subsequently, the energy-recovery torque curve is adjusted to form a second curve, and the driving electric motor is controlled to recover energy and charge the battery when the energy-recovery signal is detected.

Furthermore, the patent includes claims related to a reducing-regulation condition, proportional factor determination, and correction factor application for adjusting the energy-recovery torque curve. The method also covers scenarios where the available charging power exceeds the target value, allowing the driving electric motor to recover energy and charge the battery according to the original energy-recovery torque curve. Additionally, the patent extends to a computer-readable medium storing the code for executing the energy controlling method, an energy recovery controlling system with processors and storage apparatus, and a vehicle and calculating device implementing the energy recovery method. The system and device operations involve similar steps as the method, including inflection-point speed determination, reduction proportion calculation, and adjustment of the energy-recovery torque curve to optimize energy recovery and battery charging in vehicles.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.