BYD had three patents in big data during Q1 2024. The method described in the patent involves collecting sample data from a power battery using sensors, categorizing the data into different aging models with corresponding feature identifiers, determining battery state parameters, selecting an aging model based on the parameters, and using the selected model to calculate the capacity of the power battery. GlobalData’s report on BYD gives a 360-degree view of the company including its patenting strategy. Buy the report here.
BYD grant share with big data as a theme is 33% in Q1 2024. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Method, apparatus, and device for predicting capacity of power battery (Patent ID: US20240019496A1)
The patent filed by BYD Co Ltd. describes a method for determining the capacity of a power battery using sample data collected by sensors. The method involves categorizing the sample data into different groups based on aging models and feature identifiers, selecting an appropriate aging model based on battery state parameters, and inputting these parameters into the selected model to calculate the battery capacity. The process includes utilizing clustering algorithms to categorize the data, selecting the best aging model based on proximity to the battery state parameters, and using fitting relationships like polynomial, neural network, or regression tree fitting to determine the capacity accurately. The battery state parameters considered include current, voltage, temperature, state of charge, storage time, depth of discharge, and coulombic efficiency.
Furthermore, the patent also covers a device and a non-transitory computer-readable storage medium for implementing the method described. The device includes a processor and memory to execute the instructions for collecting sample data, categorizing it into aging models, selecting the appropriate model based on battery state parameters, and calculating the battery capacity. The storage medium stores a computer program that performs similar operations when executed by a processor. The method, device, and storage medium aim to provide an efficient and accurate way to determine the capacity of power batteries, especially in electric vehicles, by considering various factors affecting battery performance and aging.
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