BATTERY MANAGEMENT DEVICE, BATTERY APPARATUS, DISK ARRAY APPARATUS AND BATTERY MANAGEMENT METHOD
First Claim
1. A battery management device, comprising:
- a charging circuit to charge a secondary battery;
a discharging circuit to discharge the secondary battery;
a path switching circuit including a function to switchably connect no smaller than the three secondary batteries to be managed with one of the charging circuit and the discharging circuit separately, and a function to connect a plurality of the secondary batteries selected as a power source among the secondary batteries to be managed such that the secondary batteries selected as a power source are in a specific connection state;
an information collection unit to collect at least one of information indicating a charging situation about the secondary battery connected to the charging circuit via the path switching circuit, and information indicating a discharging situation about the secondary battery connected to the discharging circuit via the path switching circuit as battery status information; and
a controller to calculate a degradation state of each of the secondary batteries as a management objects based on the battery status information, and manage each of the secondary batteries as management objects based on the calculated degradation state,wherein the controller includes;
a function to select a plurality of the secondary batteries as the power source by using the degradation state,a reorganization function to make one of the secondary batteries not selected as the power source be a new power source as substitute for one of the secondary battery selected based on the degradation state among the secondary batteries having been selected as the power source,a refreshing function to activate the secondary battery having been disconnected from the power source by the reorganization function using the discharging circuit and the charging circuit, anda function to control the path switching circuit according to a prescribed control procedure.
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Accused Products
Abstract
Disclosed is a battery management device 1 and the like that maintains each secondary battery (SB) 2 in an appropriate state.
The battery management device 1 calculates a degradation state of no smaller than the three SB 2 to be managed separately, selects, as the new power source, one of the SB 2 that have not been selected as a power source among a plurality of the SB 2 as management objects based on the degradation state, selects one of the plurality of the SB 2 that have been selected as the power source based on the degradation state and removing it from the power source, changes a combination of a plurality of the secondary batteries as the power source based on the degradation state, and activates the SB 2 disconnected from the power source by discharging and charging the SB 2.
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Citations
10 Claims
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1. A battery management device, comprising:
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a charging circuit to charge a secondary battery; a discharging circuit to discharge the secondary battery; a path switching circuit including a function to switchably connect no smaller than the three secondary batteries to be managed with one of the charging circuit and the discharging circuit separately, and a function to connect a plurality of the secondary batteries selected as a power source among the secondary batteries to be managed such that the secondary batteries selected as a power source are in a specific connection state; an information collection unit to collect at least one of information indicating a charging situation about the secondary battery connected to the charging circuit via the path switching circuit, and information indicating a discharging situation about the secondary battery connected to the discharging circuit via the path switching circuit as battery status information; and a controller to calculate a degradation state of each of the secondary batteries as a management objects based on the battery status information, and manage each of the secondary batteries as management objects based on the calculated degradation state, wherein the controller includes; a function to select a plurality of the secondary batteries as the power source by using the degradation state, a reorganization function to make one of the secondary batteries not selected as the power source be a new power source as substitute for one of the secondary battery selected based on the degradation state among the secondary batteries having been selected as the power source, a refreshing function to activate the secondary battery having been disconnected from the power source by the reorganization function using the discharging circuit and the charging circuit, and a function to control the path switching circuit according to a prescribed control procedure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A battery management method comprising:
by a computer, collecting at least one of information indicating a charging situation about a secondary battery to be managed and information indicating a discharging situation about the secondary battery being discharged as battery status information; calculating a degradation state of the secondary battery to be managed based on the battery status information; selecting one of the secondary batteries having not been selected as a power source among no smaller than the three secondary batteries to be managed as a new power source based on the degradation state; selecting one of a plurality of the secondary batteries having been selected as the power source based on the degradation state and disconnecting the selected secondary batteries from the power source; changing a combination of the plurality of the secondary batteries as the power source; and activating the secondary battery having been disconnected from the power source by discharging and charging the secondary battery.
Specification