Abstract: Disclosed is an apparatus for estimating a voltage of a secondary battery which includes a cathode comprising a first cathode material and a second cathode material with different operating voltage ranges, an anode comprising an anode material and a separator for separating the cathode from the anode. The apparatus comprises a control unit configured to estimate a voltage of a secondary battery based on a circuit model including a first cathode material circuit, a second cathode material circuit and an anode material circuit, each circuit modeled to change its voltage according to State Of Charge (SOC) of the electrode material corresponding the circuit and a current flowing through the circuit.

Abstract: Disclosed is an apparatus and method for estimating a SOC of a secondary battery containing a blended cathode material. The SOC estimating apparatus estimates a SOC of a secondary battery including a cathode having a blended cathode material containing a first cathode material and a second cathode material with different operating voltage ranges, an anode having an anode material, and a separator for separating the cathode from the anode, and the apparatus includes a sensor configured to measure a discharge inception voltage and a final discharge voltage when the secondary battery is discharged for a predetermined time, and a control unit configured to estimate SOC of the secondary battery corresponding to the measured discharge inception voltage and the measured final discharge voltage by using a predetermined relationship between the discharge inception voltage and the final discharge voltage and the SOC of the secondary battery.

Abstract: Disclosed is an apparatus for estimating a state of charge (SOC) of a secondary battery which includes (i) a cathode comprising a blended cathode material having a first cathode material and a second cathode material, wherein the first and second cathode materials have different operating voltage ranges; (ii) an anode comprising an anode material; and (iii) a separator for separating the cathode from the anode. The apparatus includes a sensor configured to measure a dynamic voltage of the secondary battery during charging of the secondary battery, and a control unit configured to identify a dynamic voltage profile of the secondary battery as a transition region voltage pattern, calculate a parameter of the transition region voltage pattern, and estimate a SOC of the secondary battery from the calculated parameter by using a predetermined relationship between the parameter and the SOC.

Abstract: Disclosed is a battery system for a secondary battery including a blended cathode material, and an apparatus and method for managing a secondary battery having a blended cathode material. The blended cathode material includes at least a first cathode material and a second cathode material. The first and second cathode materials have different operating voltage ranges. When the secondary battery comes to an idle state or a no-load state, the battery system detects a voltage relaxation occurring by the transfer of operating ions between the first and second cathode materials.

Abstract: Disclosed is an apparatus and method for estimating a parameter of a secondary battery. The apparatus according to the present disclosure includes a sensor means configured to measure a plurality of current-voltage data while a charging current decreases when a secondary battery is charged in such a pattern that the charging current increases to a peak value and then decreases, and a control means configured to receive an input of the plurality of current-voltage data from the sensor means, calculate a linear approximation equation representing a correlation between a current and a voltage from the plurality of current-voltage data, estimate an open-circuit voltage (OCV) of the secondary battery by reflecting a polarization voltage of the secondary battery quantified through a resistor-capacitor (RC) circuit on a Y intercept of the linear approximation equation, and estimate a state of charge (SOC) of the secondary battery from the estimated OCV.

Abstract: Disclosed is an apparatus and method for estimating a parameter of a secondary battery. The apparatus includes a sensor configured to measure an open circuit voltage (OCVm) of the secondary battery at a first depth of discharge (DOD?), the open circuit voltage (OCVm) corresponding to a difference between a predetermined original cathode voltage (Vc,o) at the first depth of discharge (DOD?) and an anode voltage (Va), and a control unit configured to calculate an anode voltage (Va) from the original cathode voltage (Vc,o) and the open circuit voltage (OCVm), determining that the original anode voltage (Va,o) is identical to the anode voltage (Va), determining a second depth of discharge (DOD?) corresponding to the original anode voltage (Va,o), and determining capacity degradation (?capa) of the secondary battery according to a difference between the first depth of discharge (DOD?) and the second depth of discharge (DOD?).

Abstract: Disclosed is an apparatus and method for estimating a power of a secondary battery comprising a blended cathode material.

Abstract: Disclosed is an apparatus and method for estimating a parameter of a secondary battery. The apparatus according to the present disclosure includes a sensor means configured to measure a plurality of current-voltage data while a charging current decreases when a secondary battery is charged in such a pattern that the charging current increases to a peak value and then decreases, and a control means configured to receive an input of the plurality of current-voltage data from the sensor means, calculate a linear approximation equation representing a correlation between a current and a voltage from the plurality of current-voltage data, and estimate a Y intercept of the linear approximation equation as an open-circuit voltage of the secondary battery.

Abstract: Disclosed are an apparatus and method for estimating the power of a secondary battery including a blended cathode material. The apparatus according to the present disclosure includes a sensor configured to measure a discharge current of a secondary battery comprising a cathode including a blended cathode material, and a control unit configured to estimate a state of charge of the secondary battery, determine a discharge voltage of the secondary battery using a first resistance predefined corresponding to the state of charge under a first condition in which a magnitude of the discharge current is smaller than a magnitude of a critical current and a second resistance predefined corresponding to the state of charge under a second condition in which the magnitude of the discharge current is larger than the magnitude of the critical current, and determine the power of the secondary battery from the determined discharge voltage and the measured discharge current.

Abstract: Disclosed is a battery system for a secondary battery including a blended cathode material, and an apparatus and method for managing a secondary battery having a blended cathode material. The blended cathode material includes at least a first cathode material and a second cathode material. The first and second cathode materials have different operating voltage ranges. When the secondary battery comes to an idle state or a no-load state, the battery system detects a voltage relaxation occurring by the transfer of operating ions between the first and second cathode materials.

Abstract: Disclosed is a battery system for a secondary battery including a blended cathode material, and an apparatus and method for managing a secondary battery having a blended cathode material. The blended cathode material includes at least a first cathode material and a second cathode material. The first and second cathode materials have different operating voltage ranges. When the secondary battery comes to an idle state or a no-load state, the battery system detects a voltage relaxation occurring by the transfer of operating ions between the first and second cathode materials.

Abstract: Disclosed is a battery system for a secondary battery including a blended cathode material, and an apparatus and method for managing a secondary battery having a blended cathode material. The blended cathode material includes at least a first cathode material and a second cathode material. The first and second cathode materials have different operating voltage ranges. When the secondary battery comes to an idle state or a no-load state, the battery system detects a voltage relaxation occurring by the transfer of operating ions between the first and second cathode materials.

Abstract: Disclosed is an apparatus for estimating a voltage of a secondary battery which includes a cathode comprising a first cathode material and a second cathode material with different operating voltage ranges, an anode comprising an anode material and a separator for separating the cathode from the anode. The apparatus comprises a control unit configured to estimate a voltage of a secondary battery based on a circuit model including a first cathode material circuit, a second cathode material circuit and an anode material circuit, each circuit modeled to change its voltage according to State Of Charge (SOC) of the electrode material corresponding the circuit and a current flowing through the circuit.

Abstract: Disclosed is an apparatus for estimating a voltage of a secondary battery which includes a cathode comprising a first cathode material and a second cathode material with different operating voltage ranges, an anode comprising an anode material and a separator for separating the cathode from the anode. The apparatus comprises a control unit configured to estimate a voltage of a secondary battery based on a circuit model including a first cathode material circuit, a second cathode material circuit and an anode material circuit, each circuit modeled to change its voltage according to State Of Charge (SOC) of the electrode material corresponding the circuit and a current flowing through the circuit.

Abstract: Disclosed is an apparatus for estimating a voltage of a secondary battery which includes a cathode comprising a first cathode material and a second cathode material with different operating voltage ranges, an anode comprising an anode material and a separator for separating the cathode from the anode. The apparatus comprises a control unit configured to estimate a voltage of a secondary battery based on a circuit model including a first cathode material circuit, a second cathode material circuit and an anode material circuit, each circuit modeled to change its voltage according to State Of Charge (SOC) of the electrode material corresponding the circuit and a current flowing through the circuit.

Abstract: Disclosed is an apparatus for estimating a voltage of a secondary battery which includes a cathode comprising a first cathode material and a second cathode material with different operating voltage ranges, an anode comprising an anode material and a separator for separating the cathode from the anode. The apparatus comprises a control unit configured to estimate a voltage of a secondary battery based on a circuit model including a first cathode material circuit, a second cathode material circuit and an anode material circuit, each circuit modeled to change its voltage according to State Of Charge (SOC) of the electrode material corresponding the circuit and a current flowing through the circuit.

Abstract: Disclosed is a battery system for a secondary battery including a blended cathode material, and an apparatus and method for managing a secondary battery having a blended cathode material. The blended cathode material includes at least a first cathode material and a second cathode material. The first and second cathode materials have different operating voltage ranges. When the secondary battery comes to an idle state or a no-load state, the battery system detects a voltage relaxation occurring by the transfer of operating ions between the first and second cathode materials.

Abstract: Disclosed is a battery system for a secondary battery including a blended cathode material, and an apparatus and method for managing a secondary battery having a blended cathode material. The blended cathode material includes at least a first cathode material and a second cathode material. The first and second cathode materials have different operating voltage ranges. When the secondary battery comes to an idle state or a no-load state, the battery system detects a voltage relaxation occurring by the transfer of operating ions between the first and second cathode materials.

Abstract: Disclosed is an apparatus for estimating a voltage of a secondary battery which includes a cathode comprising a first cathode material and a second cathode material with different operating voltage ranges, an anode comprising an anode material and a separator for separating the cathode from the anode. The apparatus comprises a control unit configured to estimate a voltage of a secondary battery based on a circuit model including a first cathode material circuit, a second cathode material circuit and an anode material circuit, each circuit modeled to change its voltage according to State Of Charge (SOC) of the electrode material corresponding the circuit and a current flowing through the circuit.

Abstract: Disclosed is an apparatus for estimating a voltage of a secondary battery which includes a cathode comprising a first cathode material and a second cathode material with different operating voltage ranges, an anode comprising an anode material and a separator for separating the cathode from the anode. The apparatus comprises a control unit configured to estimate a voltage of a secondary battery based on a circuit model including a first cathode material circuit, a second cathode material circuit and an anode material circuit, each circuit modeled to change its voltage according to State Of Charge (SOC) of the electrode material corresponding the circuit and a current flowing through the circuit.