Nel has been granted a patent for a method of controlling hydraulic fluid injection into a high-pressure diaphragm gas compressor. The method involves measuring pressure in the high-pressure part of the hydraulic system and maintaining desired pressure by adding fluid under controller control. GlobalData’s report on Nel 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 Nel, Personalized medicine biomarkers was a key innovation area identified from patents. Nel's grant share as of January 2024 was 48%. Grant share is based on the ratio of number of grants to total number of patents.
Method of controlling hydraulic fluid injection in high-pressure compressor
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A recently granted patent (Publication Number: US11815081B2) discloses a method for controlling the injection of hydraulic fluid into a high-pressure diaphragm gas compressor. The method involves measuring the pressure in the high-pressure part of the hydraulic system of the compressor and maintaining the desired pressure by adding hydraulic fluid from an injection assembly of the low-pressure part. This injection process is controlled by a controller based on the measured pressure, ensuring that hydraulic fluid is added when the pressure potential in the injection assembly exceeds the pressure in the high-pressure part. The patent also details how the amount of added hydraulic fluid corresponds to leaked fluid, is added in discontinuous periods, and is controlled based on feedback signals from a pressure sensor.
Furthermore, the patent describes a hydrogen fueling station incorporating the high-pressure diaphragm gas compressor, highlighting the innovative pressure sensor design and the method of controlling the compressor. The patent also outlines various aspects of the compressor, including the establishment of pressure potential, control mechanisms based on feedback signals, and the configuration for pressurizing gas to specific pressure ranges. Additionally, the patent discusses the use of the pressure sensor for overpressure protection by receiving additional hydraulic fluid in certain conditions. Overall, the patent provides a comprehensive overview of a method and system for efficient control of hydraulic fluid injection in high-pressure diaphragm gas compressors, with potential applications in hydrogen refueling stations and fuel cell 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.
