Post-deterioration performance estimating apparatus and post-deterioration performance estimating method for energy storage device, and energy storage system
First Claim
1. A post-deterioration performance estimating apparatus wherein a post-deterioration performance value indicates performance of an energy storage device, the apparatus comprising:
- a post-deterioration performance estimator apparatus configured to electronically apply a first relational expression to electronically estimate the post-deterioration performance value at a deterioration point, the first relational expression includes a first capacity decreased amount and a second capacity decreased amount,wherein equilibrial capacity indicates discharge capacity of the energy storage device that is discharged at a second current of a current value smaller than a first current,wherein the post-deterioration performance estimator apparatus is configured to electronically obtain the first capacity decreased amount by electronically subtracting the equilibrial capacity at the deterioration point from an initial capacity of the energy storage device,wherein energy storage capacity indicates discharge capacity of the energy storage device that is discharged at the first current,wherein the post-deterioration performance estimator apparatus is configured to electronically obtain the second capacity decreased amount byelectricity subtracting the energy storage capacity at the deterioration point from the equilibrial capacity,and wherein replacement of the energy storage device is carried out at a timing based on the post-deterioration performance value.
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Abstract
A post-deterioration performance estimating apparatus estimates a post-deterioration performance value indicating performance of an energy storage device at a predetermined deterioration point, wherein discharge capacity of the energy storage device discharging at a predetermined first current is referred to as energy storage capacity, discharge capacity of the energy storage device discharging at a second current of a current value smaller than that of the first current is referred to as small current discharge capacity, a relational expression on relation among initial capacity of the energy storage device, a first capacity decreased amount obtained by subtracting the small current discharge capacity from the initial capacity, a second capacity decreased amount obtained by subtracting the energy storage capacity from the small current discharge capacity, and a cumulative operating period as a cumulative value of operating periods of the energy storage device is referred to as a first relational expression, and the post-deterioration performance estimating apparatus includes a post-deterioration performance estimator configured to estimate the post-deterioration performance value at the deterioration point in accordance with the first relational expression and the cumulative operating period at the deterioration point.
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Citations
18 Claims
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1. A post-deterioration performance estimating apparatus wherein a post-deterioration performance value indicates performance of an energy storage device, the apparatus comprising:
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a post-deterioration performance estimator apparatus configured to electronically apply a first relational expression to electronically estimate the post-deterioration performance value at a deterioration point, the first relational expression includes a first capacity decreased amount and a second capacity decreased amount, wherein equilibrial capacity indicates discharge capacity of the energy storage device that is discharged at a second current of a current value smaller than a first current, wherein the post-deterioration performance estimator apparatus is configured to electronically obtain the first capacity decreased amount by electronically subtracting the equilibrial capacity at the deterioration point from an initial capacity of the energy storage device, wherein energy storage capacity indicates discharge capacity of the energy storage device that is discharged at the first current, wherein the post-deterioration performance estimator apparatus is configured to electronically obtain the second capacity decreased amount by electricity subtracting the energy storage capacity at the deterioration point from the equilibrial capacity, and wherein replacement of the energy storage device is carried out at a timing based on the post-deterioration performance value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A post-deterioration performance method wherein:
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a post-deterioration performance value indicates performance of an energy storage device, equilibrial capacity of the energy storage device indicates discharge capacity of the energy storage device that is discharged at a second current of a current value smaller than a first current, and energy storage capacity indicates discharge capacity of the energy storage device that is discharged at the first current, the method comprising; electronically subtracting, by a post-deterioration performance estimator apparatus, the equilibrial capacity at a deterioration point from an initial capacity of the energy storage device to obtain a first capacity decreased amount; electronically subtracting, by the post-deterioration performance estimator apparatus, the energy storage capacity at the deterioration point from the equilibrial capacity to obtain a second capacity decreased amount; and electronically applying, by the post-deterioration performance estimator apparatus, a first relational expression to electronically estimate the post-deterioration performance value at the deterioration point, wherein the first relational expression includes the first capacity decreased amount and the second capacity decreased amount, and wherein replacement of the energy storage device is carried out at a timing based on the post-deterioration performance value.
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18. An integrated circuit wherein a post-deterioration performance value indicates performance of an energy storage device, the integrated circuit comprising:
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a post-deterioration performance estimator apparatus configured to electronically apply a first relational expression to electronically estimate the post-deterioration performance value at a deterioration point, the first relational expression includes a first capacity decreased amount and a second capacity decreased amount, wherein equilibrial capacity indicates discharge capacity of the energy storage device that is discharged at a current of a second current value smaller than a first current, wherein the post-deterioration performance estimator apparatus is configured to electronically obtain the first capacity decreased amount by electronically subtracting the equilibrial capacity at the deterioration point from an initial capacity of the energy storage device, wherein energy storage capacity indicates discharge capacity of the energy storage device that is discharged at the first current, wherein the post-deterioration performance estimator apparatus is configured to electronically obtain the second capacity decreased amount by electronically subtracting the energy storage capacity at the deterioration point from the equilibrial capacity, and wherein replacement of the energy storage device is carried out at a timing based on the post-deterioration performance value.
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Specification