Estimation device, energy storage module, estimation method, and computer program
AssigneeGS Yuasa International Ltd.
InventorsShinnosuke Ichikawa, Shinya Miyazono, Akihito Tanoi, Heisuke Nishikawa, Nobuhiro Nakajima, Takashi Shimizu
Life of this patent
Estimating the term…
Abstract
An estimation device is a device that estimates a charge state of an energy storage device including a negative electrode having a negative active material that contains Si. The estimation device includes a control unit that determines based on a charge-discharge history of the energy storage device whether or not to perform a first estimation method of estimating a charge state of the energy storage device by using a relationship between the charge state and a voltage of the energy storage device.
Claims16
An estimation device for estimating a charge state of an energy storage device that includes a negative electrode having a negative active material that contains Si, the estimation device comprising:
- a control unit that is configured to determine based on a charge-discharge history of the energy storage device whether or not to perform a first estimation method of estimating the charge state of the energy storage device by using a relationship between the charge state and a voltage of the energy storage device,
- wherein the control unit is configured to determine whether or not to perform the first estimation method in accordance with a result of estimation relating to a transient potential change of the negative electrode.
A method for estimating a charge state of an energy storage device that includes a negative electrode having a negative active material that contains Si, the method comprising:
- determining based on a charge-discharge history of the energy storage device whether or not to perform a first estimation method of estimating the charge state of the energy storage device by using a relationship between the charge state and a voltage of the energy storage device;
- and
- determining whether or not to perform the first estimation method in accordance with a result of estimation relating to a transient potential change of the negative electrode.
A non-transitory computer-readable medium that stores a computer program for causing a computer that estimates a charge state of an energy storage device that includes a negative electrode having a negative active material that contains Si to perform processing when executed on a processor of:
- determining based on a charge-discharge history of the energy storage device whether or not to perform a first estimation method of estimating the charge state of the energy storage device by using a relationship between the charge state and a voltage of the energy storage device;
- and
- determining whether or not to perform the first estimation method in accordance with a result of estimation relating to a transient potential change of the negative electrode.
Dependencies are inferred from the claim text.