Diagnostic device, diagnostic system, diagnostic method, and diagnostic program
AssigneeHonda Motor Co., Ltd.
InventorShuichi KAZUNO
Life of this patent
Estimating the term…
Abstract
To prevent incorrect information from being given to a driver regarding the estimation of a degradation state of a secondary battery. A diagnostic device (100) for diagnosing a battery (40) provided in an electric vehicle (10), includes an estimation unit (301) that estimates a degradation state of the battery (40); a derivation unit (302) that derives an index value indicating validity of data used for the estimation of the degradation state; and a notification unit (303) that notifies, when accuracy of an estimated value is determined to be low based on the index value, a cause of a decrease in the accuracy of the estimated value.
Claims5
A diagnostic device for diagnosing a secondary battery provided in an electric vehicle, the diagnostic device comprising:
- an estimation unit configured to estimate a degradation state of the secondary battery;
- a derivation unit configured to derive an index value indicating validity of data used for the estimation of the degradation state;
- and
- a notification unit configured to notify, when accuracy of an estimated value estimated by the estimation unit is determined to be low based on the index value, a cause of a decrease in the accuracy of the estimated value.
A diagnostic system for diagnosing a secondary battery provided in an electric vehicle by a server, the server comprising:
- an estimation unit configured to estimate a degradation state of the secondary battery by acquiring data through wireless data communication with the electric vehicle;
- a derivation unit configured to derive an index value indicating validity of the data used for the estimation of the degradation state;
- and
- a notification unit configured to notify, when accuracy of an estimated value estimated by the estimation unit is determined to be low, the electric vehicle of a cause of a decrease in the accuracy of the estimated value.
A diagnostic method for diagnosing a secondary battery provided in an electric vehicle, the diagnostic method comprising:
- estimating a degradation state of the secondary battery;
- deriving an index value indicating validity of data used for the estimation of the degradation state;
- and
- notifying, when accuracy of the estimation of the degradation state is determined to be low based on the index value, a cause of a decrease in the accuracy of the estimation.
A diagnostic program for diagnosing a secondary battery provided in an electric vehicle by executing a predetermined processing procedure by execution of an arithmetic processing circuit, the processing procedure comprising:
- an estimation step of estimating a degradation state of the secondary battery;
- a derivation step of deriving an index value indicating validity of data used for the estimation of the degradation state;
- and
- a notification step of notifying, when accuracy of an estimated value estimated by the estimation step is determined to be low based on the index value, a cause of a decrease in the accuracy of the estimated value.
Dependencies are inferred from the claim text.