Furukawa Electric had 45 patents in batteries during Q4 2023. The patents filed by Furukawa Electric Co Ltd in Q4 2023 focus on improving maintenance charging control and preventing overcharge or insufficient charge in power storage systems. They also describe innovations in bipolar storage batteries to reduce the impact of electrolytic solution on battery performance, including preventing corrosion by sulfuric acid and improving sealing structures to prevent leakage. The use of light transmissive and light absorbing resin materials in frame units is highlighted as a way to enhance the reliability of bipolar batteries. GlobalData’s report on Furukawa Electric gives a 360-degreee view of the company including its patenting strategy. Buy the report here.
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Furukawa Electric grant share with batteries as a theme is 26% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Method for controlling maintenance charging, and power storage system (Patent ID: US20230378559A1)
The patent filed by Furukawa Electric Co Ltd describes a method for controlling maintenance charging in a power storage system to prevent overcharge and insufficient charge during recovery charging. The method involves performing constant voltage charging after constant current charging, with the decision to continue or terminate the constant voltage charging being based on the battery temperature and a threshold value. The temperature of the battery is determined using a charging rate calculated from the total charge and discharge amounts of the battery, which are in turn calculated from the current value of the battery.
Furthermore, the patent claims detail the steps involved in the method for controlling maintenance charging, including measuring the temperature and current of the battery, correcting the current value based on temperature, calculating total charge and discharge amounts, and making decisions during constant voltage charging based on charging rates and threshold values. The system also includes components such as a temperature sensor, host system for energy management, assembled battery sensor, and battery monitoring device to ensure effective state determination and control of charging and discharging processes, including maintenance charging. Overall, the method and system aim to optimize battery maintenance charging by considering temperature variations and charging rates to prevent overcharging and undercharging in the power storage 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.
