To provide a battery degradation state estimating device capable of estimating the degradation state of a battery at discretionary timing and improving the accuracy of estimation.SOLUTION: Provided is a battery degradation state estimating device that estimates a degradation state of a battery for traveling that is mounted in a vehicle. The degradation state estimating device comprises: a detection unit for detecting a plurality of state quantities including first, second and third state quantities that represent a use state of the battery; a storage unit for storing a plurality of map data indicating degradation degrees of the battery that corresponds to the plurality of state quantities; and an estimation unit for estimating a degradation change quantity of the battery. The plurality of map data includes first map data in which degradation degrees corresponding to the first and second state quantities of the battery are indicated and second map data in which degradation degrees corresponding to the second and third state quantities of the battery are indicated. The estimation unit estimates the degradation change quantity of the battery on the basis of the plurality of map data and a plurality of weighting coefficients.SELECTED DRAWING: Figure 3A
【課題】任意のタイミングにおいて電池の劣化状態を推定することができ、かつ、推定精度の向上を図ることのできる電池の劣化状態推定装置を提供する。【解決手段】車両に搭載された走行用の電池の劣化状態を推定する電池の劣化状態推定装置である。劣化状態推定装置は、電池の使用状態を表わす第1状態量、第2状態量及び第3状態量を含む複数の状態量を検出する検出部と、複数の状態量に応じた電池の劣化度合が示された複数のマップデータを記憶した記憶部と、電池の劣化変化量を推定する推定部とを備える。そして、複数のマップデータは、前記電池の前記第1状態量と前記第2状態量とに応じた劣化度合が示された第1マップデータと、前記電池の前記第2状態量と前記第3状態量とに応じた劣化度合が示された第2マップデータとを含み、推定部は、複数のマップデータと、複数の重み付け係数とに基づいて電池の劣化変化量を推定する。【選択図】図3A
BATTERY DEGRADATION STATE ESTIMATING DEVICE
電池の劣化状態推定装置
2022-12-06
Patent
Elektronische Ressource
Japanisch
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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