General Motors has patented a vehicle electrical system with a rechargeable energy storage system (RESS) and power inverter connected to an electric motor. The system efficiently steps down voltage for accessory loads, enhancing overall performance and energy management in vehicles. GlobalData’s report on General Motors 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 General Motors, Reformer integrated fuel cells was a key innovation area identified from patents. General Motors's grant share as of April 2024 was 72%. Grant share is based on the ratio of number of grants to total number of patents.
Vehicle electrical system with power inverter for step-down voltage
A recently granted patent (Publication Number: US11970072B2) discloses a vehicle electrical system that includes a rechargeable energy storage system (RESS), a power inverter, an electric motor with machine windings, and an accessory load requiring a specific voltage. The system features semiconductor switches within the power inverter that convert DC power from the RESS to AC power for the electric motor. The power inverter can cycle between different operational states to connect the RESS to the machine windings, step down voltage for the accessory load, or directly charge the accessory load. The system also includes accessory load switches and a controller for efficient operation.
Furthermore, the patent details the configuration of the power inverter, the types of semiconductor switches used, and the various operational states the system can cycle through. The accessory load can include propulsion support, climate control, or driver comfort systems. The system's design ensures optimal power distribution and efficient operation, with the power inverter playing a crucial role in managing the flow of current between the RESS, electric motor, and accessory load. The inclusion of a controller adds a layer of control and automation to the system, allowing for precise operation based on specific commands, such as a buck operation, to meet the power requirements of the accessory load and ensure smooth functioning of the vehicle electrical system.
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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.
