The invention provides a power storage system which can estimate the current internal resistance value of a storage battery with high precision even if the internal resistance value of the storage battery cannot be calculated based on the voltage value and the current value of the storage battery. A control device (20) for a vehicle power storage system (50) including a battery (BAT) and a control device (20) acquires a reference value for an internal resistance value (R) corresponding to a current state of charge and temperature of the battery (BAT) from a pre-prepared map when the internal resistance value (R) of the battery (BAT) cannot be calculated from a voltage value (V) and a current value (I) of the battery (BAT). A correction value obtained by correcting the reference value on the basis of a prescribed correction coefficient calculated in the past is calculated, and the internal resistance value of the current storage battery (BAT) is estimated on the basis of the correction value and the voltage value (V) of the current storage battery (BAT).
本发明提供一种蓄电系统,即使在无法基于蓄电池的电压值以及电流值来算出蓄电池的内部电阻值的情况下,也能够高精度地推定当前蓄电池的内部电阻值。包含蓄电池(BAT)和控制装置(20)的车辆用蓄电系统(50)的控制装置(20),在无法根据蓄电池(BAT)的电压值(V)及电流值(I)算出蓄电池(BAT)的内部电阻值(R)的情况下,从预先准备的映射中取得与当前蓄电池(BAT)的充电状态及温度对应的内部电阻值(R)的基准值,算出根据过去算出的规定的校正系数对该基准值进行校正后的校正值,根据该校正值和当前蓄电池(BAT)的电压值(V),推定当前蓄电池(BAT)的内部电阻值。
Electricity storage system
蓄电系统
25.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC: | H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Europäisches Patentamt | 2018
|ELECTRICITY STORAGE SYSTEM AND METHOD FOR CONTROLLING ELECTRICITY STORAGE SYSTEM
Europäisches Patentamt | 2017
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