GS Yuasa has been granted a patent for a monitoring device that can detect the state of an energy storage device. The device includes an acquisition unit to gather information about the mode of a learning model, and a change unit to adjust the operation of a balancer circuit based on the mode of the learning model. The balancer circuit is responsible for maintaining a balanced voltage in the energy storage device. GlobalData’s report on GS Yuasa gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on GS Yuasa, hydrogen storage alloys was a key innovation area identified from patents. GS Yuasa's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.
Monitoring device for energy storage device with learning and detection modes
A recently granted patent (Publication Number: US11677253B2) describes a monitoring device and method for monitoring an energy storage device. The monitoring device includes an acquisition unit that acquires information about the mode of a learning model, which is designed to detect the state of the energy storage device. The device also includes a change unit that can modify the operation of a balancer circuit based on the mode of the learning model.
In the first mode, known as the learning mode, the change unit alters the operation of the balancer circuit from a predetermined state. This can involve changing the threshold voltage to a higher value, causing the balancer circuit to balance the voltage of the energy storage device. Additionally, the change unit can stop the operation of the balancer circuit or discharge one of the energy storage cells to increase the voltage difference between the cells.
In the second mode, known as the detection mode, the change unit allows the balancer circuit to operate in the predetermined state or changes its operation from the predetermined state. The acquisition unit can obtain information about the mode of the learning model from a server.
The balancer circuit in the monitoring device includes a series circuit of a resistor and a switch connected in parallel for each energy storage cell. The voltages of the energy storage device are balanced using these switches and resistors based on the determined maximum and minimum voltages among the cells.
The patent also describes a computer program stored in a non-transitory computer-readable medium that can cause a computer to execute the learning model. The program acquires information about the mode of the learning model, changes the operation of the balancer circuit, and provides input data (such as voltage, current, temperature, and state of charge) to the learning model.
Another computer program described in the patent can detect the state of the energy storage device by inputting data to the learning model that has learned based on the previous program.
Overall, this patent presents a monitoring device and method that can effectively monitor and balance the voltage of an energy storage device using a learning model and a balancer circuit.
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