BATTERY SYSTEM USING SECONDARY BATTERY
First Claim
1. A battery system in which module batteries, each of which includes cell batteries connected in series, are connected to one another, the battery system comprising:
- a battery management unit that manages states of the module batteries,wherein each of the module batteries comprises;
a cell voltage detection/inter-cell balancing circuit that detects a cell voltage of each of the cell batteries, sends the detected cell voltage as a cell voltage signal to the battery management unit, and balances energies among the cell batteries based on an inter-cell balance control signal sent from the battery management unit in response to the cell voltage signal; and
an inter-module balancing circuit that balances energies among the module batteries based on an inter-module balance control signal sent from the battery management unit, andthe battery management unit comprises;
an inter-cell balance control circuit that, based on the cell voltage signals sent from the cell voltage detection/inter-cell balancing circuits of the module batteries, creates the inter-cell balance control signal for balancing the energies among the cell batteries in each of the module batteries, and sends the inter-cell balance control signal to the cell voltage detection/inter-cell balancing circuit in each of the module batteries; and
an inter-module balance control circuit that, based on the cell voltage signals sent from the cell voltage detection/inter-cell balancing circuits of the module batteries, creates the inter-module balance control signal for balancing the energies among the module batteries, and sends the inter-module balance control signal to the inter-module balancing circuits in the module batteries.
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Accused Products
Abstract
A battery system in which module batteries, each of which includes cell batteries connected in series, are connected to one another. Each of the module batteries includes: a cell voltage detection/inter-cell balancing circuit that detects a cell voltage of each of the cell batteries to then create a cell voltage signal, and balances energies among the cell batteries based on the created cell voltage signal; and an inter-module balancing circuit that balances energies among the module batteries based on a module voltage obtained by summing up the cell voltages of the cell batteries.
50 Citations
12 Claims
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1. A battery system in which module batteries, each of which includes cell batteries connected in series, are connected to one another, the battery system comprising:
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a battery management unit that manages states of the module batteries, wherein each of the module batteries comprises; a cell voltage detection/inter-cell balancing circuit that detects a cell voltage of each of the cell batteries, sends the detected cell voltage as a cell voltage signal to the battery management unit, and balances energies among the cell batteries based on an inter-cell balance control signal sent from the battery management unit in response to the cell voltage signal; and an inter-module balancing circuit that balances energies among the module batteries based on an inter-module balance control signal sent from the battery management unit, and the battery management unit comprises; an inter-cell balance control circuit that, based on the cell voltage signals sent from the cell voltage detection/inter-cell balancing circuits of the module batteries, creates the inter-cell balance control signal for balancing the energies among the cell batteries in each of the module batteries, and sends the inter-cell balance control signal to the cell voltage detection/inter-cell balancing circuit in each of the module batteries; and an inter-module balance control circuit that, based on the cell voltage signals sent from the cell voltage detection/inter-cell balancing circuits of the module batteries, creates the inter-module balance control signal for balancing the energies among the module batteries, and sends the inter-module balance control signal to the inter-module balancing circuits in the module batteries. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A battery system in which module batteries, each of which includes cell batteries connected in series, are connected to one another,
wherein each of the module batteries comprises: -
a cell voltage detection/inter-cell balancing circuit that detects a cell voltage of each of the cell batteries to then create a cell voltage signal, and balances energies among the cell batteries based on the created cell voltage signal; and an inter-module balancing circuit that balances energies among the module batteries based on a module voltage obtained by summing up the cell voltages of the cell batteries.
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Specification